AU621548B2 – Soft tip catheter
– Google Patents
AU621548B2 – Soft tip catheter
– Google Patents
Soft tip catheter
Download PDF
Info
Publication number
AU621548B2
AU621548B2
AU20674/88A
AU2067488A
AU621548B2
AU 621548 B2
AU621548 B2
AU 621548B2
AU 20674/88 A
AU20674/88 A
AU 20674/88A
AU 2067488 A
AU2067488 A
AU 2067488A
AU 621548 B2
AU621548 B2
AU 621548B2
Authority
AU
Australia
Prior art keywords
tip
catheter
distal end
jacket
core
Prior art date
1987-08-14
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU20674/88A
Other versions
AU2067488A
(en
Inventor
Richard M. Demello
Robert J. Ham
Michael F. Lang
Gerry D. Ouellette
Andrea T. Slater
Frederick W. Trombley Iii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CR Bard Inc
Original Assignee
CR Bard Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1987-08-14
Filing date
1988-08-11
Publication date
1992-03-19
1988-08-11
Application filed by CR Bard Inc
filed
Critical
CR Bard Inc
1989-02-16
Publication of AU2067488A
publication
Critical
patent/AU2067488A/en
1992-03-19
Application granted
granted
Critical
1992-03-19
Publication of AU621548B2
publication
Critical
patent/AU621548B2/en
2008-08-11
Anticipated expiration
legal-status
Critical
Status
Ceased
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
A61M25/00—Catheters; Hollow probes
A61M25/0009—Making of catheters or other medical or surgical tubes
A61M25/001—Forming the tip of a catheter, e.g. bevelling process, join or taper
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
A61L29/04—Macromolecular materials
A61L29/041—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
A61L29/08—Materials for coatings
A61L29/085—Macromolecular materials
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
A61M25/00—Catheters; Hollow probes
A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
A61M25/0069—Tip not integral with tube
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
A61M25/00—Catheters; Hollow probes
A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
A61M25/008—Strength or flexibility characteristics of the catheter tip
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
B29C41/20—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C66/00—General aspects of processes or apparatus for joining preformed parts
B29C66/01—General aspects dealing with the joint area or with the area to be joined
B29C66/05—Particular design of joint configurations
B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
B29C66/114—Single butt joints
B29C66/1142—Single butt to butt joints
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C66/00—General aspects of processes or apparatus for joining preformed parts
B29C66/01—General aspects dealing with the joint area or with the area to be joined
B29C66/05—Particular design of joint configurations
B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C66/00—General aspects of processes or apparatus for joining preformed parts
B29C66/01—General aspects dealing with the joint area or with the area to be joined
B29C66/05—Particular design of joint configurations
B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C66/00—General aspects of processes or apparatus for joining preformed parts
B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
B29C66/53—Joining single elements to tubular articles, hollow articles or bars
B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C66/00—General aspects of processes or apparatus for joining preformed parts
B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
B29C70/76—Moulding on edges or extremities of the preformed part
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
A61M25/00—Catheters; Hollow probes
A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
A61M25/008—Strength or flexibility characteristics of the catheter tip
A61M2025/0081—Soft tip
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
A61M25/00—Catheters; Hollow probes
A61M25/0009—Making of catheters or other medical or surgical tubes
A61M25/0012—Making of catheters or other medical or surgical tubes with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
A61M25/00—Catheters; Hollow probes
A61M25/0043—Catheters; Hollow probes characterised by structural features
A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
A61M25/00—Catheters; Hollow probes
A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
A61M25/0108—Steering means as part of the catheter or advancing means; Markers for positioning using radio-opaque or ultrasound markers
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C2793/00—Shaping techniques involving a cutting or machining operation
B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
B29C41/14—Dipping a core
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C66/00—General aspects of processes or apparatus for joining preformed parts
B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
B29L2031/00—Other particular articles
B29L2031/753—Medical equipment; Accessories therefor
B29L2031/7542—Catheters
Description
T
‘I
A U s627I1A5 48 COMMONWEALTH OF PATENT ACT 1952 COMPLETE SPECI FICATION
(ORIGINAL)
FOR OFFICE USE Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority: Related Art-: CLASS INT. CLASS 0 0 0 0 0o 000 C0 0 NAME OF APPLICANT: ADDRESS OF APPLICANT: C.R. BARD, INC.
731 Central Avenue Murray Hill New Jersey UNITED STATES OF AMERICA 07974 NAME(S) OF INVENTOR(S) RICHARD M. DeMELLO ROBERT J. HAM MICHAEL F. LANG GERRY D. OUELLETTE ANDREA T. SLATER FREDERICK W. TROMBLEY III ADDRESS FOR SERVICE: DAVIES COLLISON, Patent Attorneys I Little Collins Street, Melbourne, 3000.
‘I
1’ p COMPLETE SPECIFICATION FOR THE INVENTION ENTITLED: SOFT TIP CATHETER The following statemnent is a full description of this invention, including the best method of performing it known to us -1- B0410/7042 GLG/mc 8/14/87 9541B -la- SOFT TIP CATHETER
INTRODUCTION
a, This invention relates to catheters and more SVt particularly relates to guide catheters and their c 5 method of manufacture.
e Typical functions of a guide catheter are to e provide an access pathway for the delivery of a dilatation catheter to the coronary vasculature and on to act as a support for the dilatation catheter 10 during coronary angioplasty. To perform those o functions, the catheter must be capable of safely a o reaching the coronary ostium. Catheterization of 0 0 C the coronary arteries is a very delicate procedure which sometimes causes vascular trauma and/or creates embolisms with devastating consequences for the patient.
i The principal object of the present invention is «H to provide a qgdtA catheter with a soft tip so as to reduce the frequency of vascular complications.
S,0410/7042 GLG/mc 8/14/87 9541B PRIOR ART In U.S. patents Nos, 4,551,292 and 4,531,943 assigned to Angiomedics Corporation, a soft tip angiographic catheter and a method of manufacturing it are described. The angiographic catheter which is the subject matter of those patents has a soft Sdistal tip with a circumferential preferential fold line, which causes the tip to collapse in a predetermined fashion whenever the tip engages an obstruction. The circumferential preferential fold line is formed by a cylindrical wire having a protuberance of a predetermined shape, which is inserted into the distal end of the catheter body so as to expand the catheter material. The catheter material is heated with the cylindrical wire in S place to form the preferential fold line. This procedure provides the catheter with a bulbous tip at its distal end having a diameter which exceeds the diameter of the main tubular portion of the 0 C catheter. This construction has at least two disadvantages, namely, the enlarged tip makes it more difficult to insert the catheter into the blood vessel through the percutaneous introducer and it impedes blood flow around the catheter to the coronary arteries.
i i 4 1 SB0410/7042 GLG/mc 8/14/87 9541B ^i 3 Patent No. 4,636,346 dated January 13, 1987 and assigned to Cordis Corporation discloses a soft tipped guide catheter that includes a tubular body having an interior lubricious sheath, an intermediate, relatively stiff sheath and a flexible outer sheath, and a tip having an interior ,lubricious sheath and a flexible outer sheath made of the same material as the outer sheath of the tubular body. In one embodiment, the tip may 10 initially be formed as a separate member and then ‘affixed end to end to the tubular body by such cc techniques as heat, adhesive, etc. with the assistance of a shrink film. In another embodiment, i t the distal end of the body is ground down to remove j t 15 the intermediate and outer sheaths of the body, and the tip is slipped over the ground portion affixed Jl to it with the aid of heat, shrink film, adhesive, etc, In this form, the tip and tubular body share the same inner sheath, In a third embodiment, the tip is integrally extended with the inner and outer
C
V sheaths of the tubular body while the intermediate 0 c sheath is interrupted at the tip region, The tip softness in all these embodiments is essentially the same as the outer sheath of the body, and therefore the protection provided is limited. Furthermore, the tip material is not provided at its distal end with a substantial overlapping of the relatively B0410/7042 GLG/mc 8/14/87 9541B Sstiff core of the tubular body, and consequently the bonding of the tip to the body is not always effective.
In Cordis patent No. 4,596,563, a catheter with a flexible tip is described having a tubular body made up of a rigid inner sheath and a relatively flexible outer sheath. The flexible tip is formed by extending the outer sheath distally beyond the inner sheath. Like the ‘346 Cordis patent, supra, 10 the tip has the same hardness as the sheath or outer 9 t 1 I jacket of the tubular body.
o U.S. Patent No. 4,385,635 issued to Ruiz discloses an angiographic catheter having a main tubular body, an intermediate zone and a tip zone.
The main tubular body is reinforced with an inner ply of polyamide material which diminishes in I thickness through the intermediate zone to zero at the tip. As with the Cordis ‘563 patent, supra, the tip has the same softness as the jacket of the main tubular body portion.
i 2In the U.S. patent No. 4,563,181 assigned to Mallinckrodt, Inc., another soft tip intravascular catheter is shown wherein the tip made of a nylon blend is fused or welded at a butt-joint to the tubular body made of a different, stiffer nylon.
That type of connection, as mentioned above, is sometimes ineffective.
i Other U.S. patents showing catheters with soft tips are 4,464,176, 4,321,226, 4,282,876 and 3,890,976.
SUMMARY OF THE INVENTION The various embodiments of the invention have been designed to address some or all of the above disadvantages.
According to a first aspect of the invention there is provided a guide catheter comprising a main tubular body having a relatively hard wirebraided Teflon core and a polyurethane outer jacket, said body having proximal and distal ends, said distal end of the body having an end portion of reduced outer diameter, and a polyurethane tip having a proximal end overlapping the reduced diameter end portion of the body and extending distally beyond the distal end of the core, the material of the tip being softer than the material of the outer jacket.
According to a second aspect of the invention there is provided an intravascular catheter comprising a main tubular body having a relatively stiff core and a smooth outer jacket, said core extending distally beyond the end of the jacket, and a tip made of a material which is softer than the material of the jacket secured to and overlapping the distal end of the core and secured to the distal end of the jacket, said tip extending distally beyond the distal end of the core.
In a third aspect the invention provides an intravascular catheter comprising a main tubular body having distal and proximal ends, a step provided at the distal end of the body forming a section of reduced outer diameter extending to the distal end of the body, and a tip made of a material which is softer than the material of the body, secured to and overlapping the t911012wpftdisk45,20674.spe,5 r -6section of reduced diameter and secured to the step in the body, said tip extending distally beyond the end of the body and having an outer diameter equal to the diameter of the body immediately proximal to the step and having an inner diameter equal to the inner diameter of the body immediately distal to the step.
In accordance with the present invention, the soft tip catheter has no preferential fold line, and in a preferred embodiment its outer diameter at the tip does not exceed the outer diameter of the main body of the guide catheter. Rather, the catheter of this embodiment of the present invention has essentially a uniform outer diameter throughout its axial extent. Consequently, the tip of the catheter will pass through the introducer with the same facility as the main body of the catheter, and the catheter tip will not obstruct the blood flow around the catheter to the coronary arteries. Furthermore, if the inner diameter of the tip is not less than the inner diameter of the tubular body it will not interfere with insertion of the dilatation catheter through it.
In accordance with the preferred embodiment of the present invention, the main body of the guide catheter has a reduced outer diameter at its distal end, and a soft polyurethane tip is mounted on the end portion of reduced diameter. The soft tip overlaps the distal end for approximately two millimeters and extends distally approximately two millimeters beyond the main body. In the preferred embodiment, the tip is separately fabricated as a soft polyurethane tube and attached to the main body, and the tip is then shaped in a place as part of the assembly. The tip may be developed by repeated dipping of the distal end of the main body into a semi-viscous slurry of the soft polyurethane. The reduced diameter distal end of the main body may be placed in a female mold whose cavity has been machined to the desired tip configuration. Soft polyurethane is pLI injected into the cavity so as to mold the tip onto the 9110 fd 45,274.spe,6 0c~i 911oZwpfdisk452O674.spe,6
I
-7body of the catheter.
The preferred embodiment of the present invention is made up of a main body composed of a polyurethane outer jacket laminated onto a wire-braided teflon core.
Approximately two millimeters of the outer jacket at the distal end are stripped from the core, which forms a shoulder proximally of the end of the core, and a marker bank is placed about the core against the shoulder. A soft polyurethane tube is forced over the core and may abut against the shoulder at the distal end of the jacket and overlie the marker band. A stepped mandrel is then inserted into the distal end of the assembled soft polyurethane tube and relatively stiff core with the step in the mandrel abutting the distal end of the soft polyurethane tube. A tubular shrink film is next placed over the soft polyurethane tube and the distal end of the jacket and overlies the region where the two are to be bonded. The assembly is then heated for a time and temperature sufficient to cause the soft polyurethane tube to fill the gaps about the marker band and any other gaps which may exist at the bonding area and about the mandrel so that the inner diameter of the tube conforms to the mandrel surface. The mandrel and the shrink tube are thereafter removed, the outer diameter of the assembled guide catheter may be ground smooth and the assembly may be provided with an antithrombogenic coating. Finally, the tip may be ground again so as to remove any coating which covers approximately the last two millimeters of the tip so as to preserve its soft character. The substantial overlap of the tip material on the core assures the formation of a sound bond between the body and tip.
The invention further provides a method of making an intravascular catheter comprising the steps of providing a main tubular body having a wire-braided Score and softer outer jacket, 911012wpftdisk4,20674.spe,7 r- -7aremoving the jacket from the distal end of the body, providing a tubular tip of a material softer than the jacket and forcing its proximal end over the distal end of the body where the jacket has been removed and with the distal end of the tip extending distally beyond the distal end of the body, and securing the tubular tip in position.
Furthermore, the invention provides a method of making an intravascular catheter comprising the steps of providing a main tubular body with a step at its distal end to establish a distal section of reduced outer diameter, providing a tubular tip of a material softer than the body and having an outer diameter equal to inner diameter of the body immediately distal to the step and overlapping its proximal end onto the section of reduced diameter, a portion of the tubular tip extending beyond the distal end of the section of reduced diameter and securing the tip to the body in the overlapped position to thereby provide a catheter having a uniform inner and outer diameter throughout a distal end portion.
These and other objects and features of the present invention will be better understood and appreciated from the following detailed description i9 0 i: 91101L,upftdisk45,20674.spe,8 -0i 0 B0410/7042 GLG/mc 8/14/87 9541B 8 i of several embodiments thereof, selected for purposes of illustration and shown in the accompanying drawings, SBRIEF FIGURE DESCRIPTION cc c :C 5 FIG. 1 is a fragmentary view, partly in section showing the preferred embodiment of a guide catheter with a soft tip, constructed in accordance with this C C invention; and FIGS. 2A-2I are fragmentary cross-sectional views diagrammatically illustrating the sequence of steps for manufacturing the soft tip guide catheter of FIG. 1, in accordance with the present invention.
C C DETAILED DESCRIPTION C C The catheter shown in FIG, 1 includes an elongated tubular body 10 and a soft tip 12 bonded «c to In the region where the body 10 and tip 12 c^ are bonded together, a precious metal marker band 14 is provided which serves as a radiopaque identifier.
The tubular body 10 typically may be made up of a wire-braided Teflon core 16 and a polyurethane outer jacket 18 bonded together at their interface by an epoxy 20. (Teflon is a trademark of and is S11.41 p /\Ii I B0410/7042 GLG/mc 8/14/87 9541B -9available from E.I. duPont de Nemours Co., Inc.) This catheter body construction is well-known in the ineto. Tewr-rie lncrindustry and is not per se the subject of this jacket laminate is currently used in guide catheters sold by C.R. Bard, Inc., the assignee of this application. While that particular body construction is particularly suitable for use C C C C C with guide catheters because of its ability to transmit torque, its stiffness, and other CC characteristics, it should be understood that the catheter tubular body may be made of other materials and be uniform throughout its cross-section. The t CCT Durometer of the polyurethane jacket 18 in the 15 example given is approximately 55D while the much
C
softer polyurethane tip 12, on the other -hand, Q CC C Cpreferably has a Durometer of approximiately Radii are formed in the tip at the inner and outer diameters as suggested at 22 and 24 to further reduce the likelihood of vascular trauma as the catheter passes through the blood vessels.
J r Preferably, the catheter assembly is provided with an antithrombogenic coating as suggested at However, to preserve the softness of the tip, any coating which may have been applied to the last two millimeters of the tip at its distal end should be removed. In the tubular body described above, B0410/7042 GLG/mc 8/14/87 9541B 10 typically the various thicknesses of the layers may be approximately as follows: Teflon layer 17, .002″; epoxy 20, .0005″; urethane jacket 18, .012″ and coating 25, .0015″. Its length is approximately 40″. In one size guide catheter, the inner and outer diameters of the tubular body are t approximately .072 and .104 inch.
*The outer diameter of the guide catheter shown in FIG. 1 is uniform throughout its length. That c 10 is, the outer diameter of the tip 12 is essentially re C the same as the other diameter of the tubular body of the guide catheter. Consequently, it is no harder to introduce the tip 12 through an introducer c» (not shown) to insert the guide catheter into a patient’s blood vessel than it is to project the tubular body 10 through it, and when the guide ece catheter is in place in the vessel, the tip does not increase the impedence to blood flow about the catheter body.
C 0cc 20 In FIGS. 2A-2I, the method of making the C.,tt catheter shown in FIG. 1 is suggested. In FIG. 2A, the laminate composed of the polyurethane outer jacket 18 and the wire-braided Teflon core 16 is shown. The jacket has a Durometer reading of approximately 55D. The tubular body 10 of the guide catheter normally is approximately 40 inches in length and the wire braid about the Teflon layer 17 NLL4 i P J J
E
r 1 1 __1 B0410/7042 GLG/mc 8/14/87 9541B 11 terminates several inches from the distal end. As stated, the material is widely used in catheters for angioplasty, arteriography, etc. sold by C.R. Bard, Inc. It is ordinarily provided with a antithrombogenic coating 25 on the surface 26, and e the distal end 28 is capable of being formed into a variety of curved shapes by heating and then cooling Q 0 the material. The absence of the wire braid at the end facilitates the shaping of the curved end. The 10 body 10 is capable of monitoring intravascular pressures and may be used to deliver constrast agents for vessel opacification as well as for the delivery of balloon dilatation catheters used in angioplasty, 15 In FIG. 2B, at approximately two millimeters from the distal end 28, the catheter tubular body *a is shown skived at 10, which enables the section 32 of the polyurethane jacket 18 and the epoxy beyond the wire braid to be stripped from the core 16.
20 FIG. 2C illustrates the body 10 with the section 32 o.o removed. The removal of section 32 reduces the diameter of the body 10 at the distal end and forms a shoulder 34 at the distal end of the jacket 18 extending radially from the surface 36 of the core 16.
FIG. 2D shows the marker band 14 disposed on the surface 36 of the core 16 and abutting the shoulder B01/74 GLG/mc 8/14/87 9541B 12 34, The band 14 serves as a radiopaque identifier to assist the physician in placing the distal end of the catheter at the desired location within the patient’s blood vessel. Typically, the band may be made of a precious metal such as gold, platinum, etc. and have a wall thickness of approximately .002 and be approximately one millimeter in length.
*00After the marker band 14 is applied, a soft polyurethane tube 40 approximately four millimeters 10 long and from which the soft tip 12 is formed, is forced over the reduced diameter distal end of the main body 10 so that its proximal end 42 abuts against the shoulder 34. While this position is ~.illustrated in FIG. 2E, it is to be understood that 4:4: 4 15 the polyurethane tube 40 may be forced onto the distal end of the main body 10 with a slight gap @0 between the shoulder 34 and the proximal end of the tube to allow the polyurethane material of the tube to flow when the assembly is heated in a later step in the manufacture of the catheter. The tube extends approximately two millimeters beyond the distal end 44 of the core 16, and the proximal end 42 of the tube 40 overlaps the marker 14. In FIG.
2E, a gap 46 is suggested between inner surface of the tube 40 and the outer surface 36 of the core immediately adjacent the marker 14, As is evident from an inspection of FIG. 1, that gap is also B0410/7042 GLG/mc 8/14/87 9541B 13 filled during the heating step in the manufacture of the catheter.
FIG. 2F illustrates the next step in the manufacturing process wherein a mandrel 50 having a section 52 with an outer diameter which essentially matches the inner the diameter of the core 16 is inserted through the tube 40 and into the core 16 so as to extend proximally at least to and preferably beyond the shoulder 34, The mandrel also has an r 10 enlarged portion 56 and a shoulder 58. A radius is shown joining the surface 54 and the shoulder 58 of the mandrel section 52. The mandrel is inserted into the distal end of the main body 10 and tube until the shoulder 58 engages the distal end 62 of .15 the tube. The mandrel extends proximally beyond the bonding area between the tube 40 and the body H r’ After the mandrel is inserted as shown in FIG.
2F, a sleeve of shrink film 64 is placed over the polyurethane tube 40 and the distal end of the jacket 18 and overlaps the shoulder 34. With the sleeve of shrink film 64 in placed as shown in FIG.
ji 2G, the distal end of the assembly is heated to a temperature and for a time sufficient to cause the soft polyurethane tube 40 to fluw and fill the gap 46 along with any other gaps which may exist between it and the shoulder 34, outer surface 36 of the core 16, and the outer surface 54 of the mandrel 50. The Ii B0410/7042 GLG/mc 8/14/87 9541B 14 time and temperature is a function of the particular polyurethane used. With one material tested, the temperature was approximately 320° for a duration of approximately five minutes, The tube 40 as a result assumes the shape shown in FIG. 2H and includes the t’F radius 22 at the inner diameter of the tube 40 at Io the distal end 62. The film 64 as it shrinks under C t, the application of heat will somewhat compress the polyurethane and cause it to conform closely to the contours of the mandrel 50. After the assembly cools, the mandrel 50 may be removed and the shrink film 64 should be stripped from the assembly. The assembled body 10, tube 40 and marker 14 are then generally configured as illustrated in FIG, 2H.
Next, the distal end of the tube 40 at the outer diameter should be ground to form the radius 24 as shown in FIG. 21. The entire outer diameter of the assembly may then be ground to smooth the outer :ctI surface of the catheter throughout its length.
20 Thereafter, a coating of antithrombogenic material may be applied to the outer surface. The coating should be removed from the distal end of the tiD 12 for an axial distance of approximately two millimeters particularly if the coating increases the stiffness of the tip 12.
As suggested above, while the soft polyurethane tip in the preferred embodiment is applied as
I
B0410/7042 GLG/mc 8/14/87 9541B 15 a~, ;ooc o@ o Jo a f o 0 4 o a ooot iooo° ooo( 0 a ao o S6 0 S0o or 4o 0 0 0 S e oosc 00C o e 0 0 o 0 0 described by forcing a tube of the material over the stepped distal end of the main body of the catheter, the tip may be formed by other techniques. For example, the tip may be formed by applying 5 successive coatings of soft polyurethane over the stepped distal end of the tubular body 10 with the body prepared as illustrated in FIGS. 2A-2C. This may be accomplished by forming a slurry of polyurethane composed of approximately 12% by weight 10 of the polyurethane and 82% of a polyurethane solvent such as tetrahydrofurane (THF). With the solution at room temperature, the distal end of the body may be inserted to the depth of the shoulder 34 for a period of approximately one second and thereafter, be removed for a period of six to ten minutes to permit the slurry to partially dry. The rate at which the tip is removed from the slurry will determine the thickness of the application of the coating. The faster the tip is removed, the 20 thicker the layer of coating which will be applied to the main body. This dipping procedure may be repeated several times (seven times in a test conducted by applicants) so as to achieve sufficient thickness for the tip. Because the material applied in this fashion shrinks significantly during the first 24 hours, it may be desirable to build up a coating or tip thickness which exceeds the diameter L’ 7 B0410/7042 GLG/mc 8/14/87 9541B 16 of the main body. The finishing of the manufacture in accordance with this method includes forming radii at the inner and outer diameters of the tiD at the distal end.
In accordance with yet another method of manufacturing the soft tip guide catheter, the a. stepped distal end of the body prepared as shown in ,0 FIGS. 2A-2C may be inserted into a mold cavity and liquid soft polyurethane forced into the cavity.
The cavity of the mold should be machined to the desired tip configuration. After the distal end of the body is placed in position in the cavity, the soft polyurethane is injected into the cavity under heat and pressure, and the material fuses to the stepped end. This manufacturing technique results in a unified shaft-soft tip product. The radii at the inner and outer diameters of the tip may be formed during the molding step so as to eliminate an additional manufacturing operation.
20 In the foregoing description, the invention has been described in terms of a guide catheter having a laminated main body composed of a polyurethane outer jacket and a wire-braided Teflon core. It will be appreciated that the tubular body may be uniform throughout its cross-section, and may be made of a variety of different materials. It should also be j appreciated that the invention may be embodied in i i B0410/7042 GLG/mc 8/14/87 9541B 17 catheters of a variety of different sizes, and the invention will be beneficial in all those applications where vascular trauma or the creation of embolisms is of concern. In accordance with this invention, the last few Smillimeters of tip (two millimeters in the S, embodiment described)are very soft to form a bumper c C t< to protect the patient. The very soft region is C'Cj "confined to the tip so as not to interfere with placement of the catheter in the blood vessels or interfere with its ability to support the dilatation catheter. If the soft material extended back from St the tip over the curved end, the catheter would buckle or otherwise distort when being inserted into the system and would not support a dilatation Scatheter.
It will also be appreciated that the scope of the invention is not confined to the specific c embodiments illustrated and described herein.
20 Rather, it is the intention of applicants that the scope of this invention be determined by the appended claims and their equivalents.
I
A
N
Claims (23)
1. A guide catheter comprising a main tubular body having a relatively hard wire- braided Teflon core and a polyurethane outer jacket, said body having proximal and distal ends, said distal end of the body having an end portion of reduced outer diameter, and a polyurethane tip having a proximal end overlapping the reduced diameter end portion of the body and extending distally beyond the distal end of the core, the material of the tip being softer than the material of the outer jacket.
2. A guide catheter as defined in claim 1 wherein the outer diameter of the end portion is reduced by the absence of the polyurethane outer jacket from the core.
3. A guide catheter as defined in claim 1 wherein the relatively soft polyurethane tip includes a plurality of layers deposited one on top of another.
4. A guide catheter as defined in claim 2 wherein the relatively soft polyurethane tip includes a plurality of layers deposited one on top of another. A guide catheter as defined in claim 1 wherein the relatively soft polyurethane tip is injection molded over the end portion of the body.
6. A guide catheter as defined in claim 2 wherein the relatively soft polyurethane tip is injection molded over the end portion of the body. 41 nl wiz9110lZwpftdsk45.20674.spe,18 S19-
7. A guide catheter as defined in any one of claim 1-6 wherein the tip overlaps the distal end of the body by approximately two millimeters.
8. A guide catheter as defined in any one of claims 1-7 wherein the tip extends distally approximately two millimeters beyond the distal end of the core.
9. An intravascular catheter comprising a main tubular body having a relatively stiff core and a smooth outer jacket, said core extending distally beyond the end of the jacket, and a tip made of a material which is softer than the material of the jacket secured to and overlapping the distal end of the core and secured to the distal end of the jacket, said tip extending distally beyond the distal end of the core.
10. A catheter as defined in claim 9 wherein a marker band is sandwiched between the tip and the core.
11. A catheter as defined in claim 9 or 10 wherein the core is made of a wire-braided material and the jacket and tip are made of polyurethane.
12. A catheter as defined in any one of claims 9-11 wherein the tip has a Durometer of approximately
13. A catheter as defined in claim 12 wherein the jacket has a Durometer of approximately
14. An intravascular catheter comprising a main tubular body having distal and proximal ends, a step provided at the distal end of the body forming a section of reduced outer diameter extending to the distal 911012wpftdisk45,20674.spe,19 end of the body, and a tip made of a material which is softer than the material of the body, secured to and overlapping the section of reduced diameter and secured to the step in the body, said tip extending distally beyond the end of the body and having an outer diameter equal to the diameter of the body immediately proximal to the step and having an inner diameter equal to the inner diameter of the body immediately distal the step. A catheter as defined in claim 14 wherein the tip has a Durometer in the order of
16. A catheter as defined in claim 14 or 15 wherein the tip overlaps the section of reduced outer diameter by approximately two millimeters.
17. A catheter as defined in any one of claims 14-16 wherein the tip extends distally approximately two millimeters beyond the end of the body.
18. A catheter as defined in any one of claims 14-17 wherein the outer diameter of the tip is substantially the same as that of the body.
19. A method of making an intravascular catheter comprising the steps of providing a main tubular body having a wire-braided core and softer outer jacket, removing the jacket from the distal end of the body, providing a tubular tip of a material softer than the jacket and forcing its proximal end over the distal end of the body where the jacket has been removed and with the distal end of the tip extending distally beyond i the distal end of the body, and securing the tubular tip in position. 0ol 91101Zwpftdisk45,20674.speO 7 7'E ,i 21 A method as defined in claim 19, and further providing a marker band and mounting the band on the core adjacent the distal end of the jacket and under the tubular tip.
21. A method as defined in claim 19 or 20 and further forming radii at the inner and outer diameters of the distal end of the tip after it is secured to the body.
22. A method as defined in any one of claims 19-21 and further applying an antithrombogenic coating to the catheter body and the tip proximally of approximately the last two millimeters of the tip.
23. A method as defined in claim 19 and further placing a heat shrink film over the proximal portion of the tubular tip and distal end of the jacket of the core, and heating the distal end of the assembly of body, tip, and shrink film to bond the tip to the core.
24. A method as defined in claim 23 and further providing a marker band and mounting the band on the core adjacent the distal end of the jacket and under the tubular tip. A method of making an intravascular catheter comprising the steps of providing a main tubular body with a step at its distal end to establish a distal section of reduced outer diameter, providing a tubular tip of a material softer than the body and having an outer diameter equal to the diameter of the body immediately proximal to the step and having an inner diameter equal to the inner diameter of the body immediately distal to the step and overlapping its proximal end onto the section of reduced diameter, a portion of the tubular tip extending beyond the distal 911012,wpftdisk4,20674.spe,2i -22- end of the section of reduced diameter and securing the tip to the body in the overlapped position to thereby provide a catheter having a uniform i inner and outer diameter throughout a distal end portion.
26. A catheter as defined in claim 20 wherein the tip has a Durometer in the order of 85A and overlaps the body by approximately two millimeters. j 10 27. An intravascular catheter substantially as Shereinbefore described with reference to the accompanying drawings.
28. A method of making an intravascular catheter substantially as hereinbefore described with reference to the accompanying drawings. Dated this 9th day of January, 1992 C.R. BARD, INC. By its Patent Attorneys DAVIES COLLISON CAVE }j4 920109,wpftdisk45,20674.spe,22
AU20674/88A
1987-08-14
1988-08-11
Soft tip catheter
Ceased
AU621548B2
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
US085392
1987-08-14
US07/085,392
US4863442A
(en)
1987-08-14
1987-08-14
Soft tip catheter
Publications (2)
Publication Number
Publication Date
AU2067488A
AU2067488A
(en)
1989-02-16
AU621548B2
true
AU621548B2
(en)
1992-03-19
Family
ID=22191316
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
AU20674/88A
Ceased
AU621548B2
(en)
1987-08-14
1988-08-11
Soft tip catheter
Country Status (4)
Country
Link
US
(1)
US4863442A
(en)
EP
(1)
EP0303487A3
(en)
JP
(1)
JPH072184B2
(en)
AU
(1)
AU621548B2
(en)
Families Citing this family (215)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPH01227766A
(en)
*
1988-03-04
1989-09-11
Yuichi Furukawa
Catheter for angiography
US5078702A
(en)
*
1988-03-25
1992-01-07
Baxter International Inc.
Soft tip catheters
US5312356A
(en)
*
1989-05-22
1994-05-17
Target Therapeutics
Catheter with low-friction distal segment
US4955862A
(en)
*
1989-05-22
1990-09-11
Target Therapeutics, Inc.
Catheter and catheter/guide wire device
US5045072A
(en)
*
1989-06-13
1991-09-03
Cordis Corporation
Catheter having highly radiopaque, flexible tip
US5217440A
(en)
*
1989-10-06
1993-06-08
C. R. Bard, Inc.
Multilaminate coiled film catheter construction
NL9000054A
(en)
*
1990-01-09
1991-08-01
Cordis Europ
METHOD FOR MANUFACTURING A CATHETER
US5670111A
(en)
*
1990-01-10
1997-09-23
Rochester Medical Corporation
Method of shaping structures with an overcoat layer including female urinary catheter
US6626888B1
(en)
1990-01-10
2003-09-30
Rochester Medical Corporation
Method of shaping structures with an overcoat layer including female urinary catheter
US5360402A
(en)
1990-01-10
1994-11-01
Rochester Medical Corporation
Hand-actuated retention catheter
US5971954A
(en)
1990-01-10
1999-10-26
Rochester Medical Corporation
Method of making catheter
US5261896A
(en)
1990-01-10
1993-11-16
Rochester Medical Corporation
Sustained release bactericidal cannula
US5120323A
(en)
*
1990-01-12
1992-06-09
Schneider (Usa) Inc.
Telescoping guide catheter system
DE69013879T2
(en)
*
1990-01-12
1995-03-09
Schneider Usa Inc
Telescopic guiding catheter system.
US4990143A
(en)
*
1990-04-09
1991-02-05
Sheridan Catheter Corporation
Reinforced medico-surgical tubes
NL9000833A
(en)
*
1990-04-09
1991-11-01
Cordis Europ
ANGIOGRAPHY CATHETER.
US5122125A
(en)
*
1990-04-25
1992-06-16
Ashridge A.G.
Catheter for angioplasty with soft centering tip
US5180376A
(en)
*
1990-05-01
1993-01-19
Cathco, Inc.
Non-buckling thin-walled sheath for the percutaneous insertion of intraluminal catheters
US5125913A
(en)
*
1990-05-11
1992-06-30
Fbk International Corporation
Soft-tipped catheters
US5348545A
(en)
*
1990-08-21
1994-09-20
Advanced Cardiovascular Systems, Inc.
Guiding catheter for the right coronary artery
US5254107A
(en)
*
1991-03-06
1993-10-19
Cordis Corporation
Catheter having extended braid reinforced transitional tip
CA2107691A1
(en)
*
1991-04-24
1992-10-25
Gene E. Myers
Aortic branch internal thoracic artery catheter
US5195969A
(en)
1991-04-26
1993-03-23
Boston Scientific Corporation
Co-extruded medical balloons and catheter using such balloons
US5256158A
(en)
*
1991-05-17
1993-10-26
Act Medical, Inc.
Device having a radiopaque marker for endoscopic accessories and method of making same
US5234416A
(en)
*
1991-06-06
1993-08-10
Advanced Cardiovascular Systems, Inc.
Intravascular catheter with a nontraumatic distal tip
US5769830A
(en)
*
1991-06-28
1998-06-23
Cook Incorporated
Soft tip guiding catheter
US5221270A
(en)
*
1991-06-28
1993-06-22
Cook Incorporated
Soft tip guiding catheter
US5308342A
(en)
*
1991-08-07
1994-05-03
Target Therapeutics, Inc.
Variable stiffness catheter
CA2117088A1
(en)
*
1991-09-05
1993-03-18
David R. Holmes
Flexible tubular device for use in medical applications
CA2082315C
(en)
1991-11-13
1997-03-18
Harold I. Pearsall
Catheter
EP0549100A1
(en)
*
1991-12-20
1993-06-30
Interventional Technologies Inc
Catheter balloon formed from a polymeric composite
US5318032A
(en)
*
1992-02-05
1994-06-07
Devices For Vascular Intervention
Guiding catheter having soft tip
CA2131902C
(en)
*
1992-03-13
2004-08-03
Paul Martakos
Controlled porosity expanded polytetrafluoroethylene products and fabrication
US5263952A
(en)
*
1992-03-25
1993-11-23
Spectranetics
Two-piece tip for fiber optic catheter
US5649909A
(en)
*
1992-04-06
1997-07-22
Scimed Life Systems, Inc.
Variable stiffness multi-lumen catheter
US5531721A
(en)
*
1992-07-02
1996-07-02
Scimed Life Systems, Inc.
Multiple member intravascular guide catheter
WO1994001160A1
(en)
*
1992-07-14
1994-01-20
Arrow International Investment Corporation
Unibody construction dual durometer epidural catheter
JPH06190052A
(en)
*
1992-09-18
1994-07-12
Cordis Corp
Catheter insertion equipment of which fiber is reinforced
US5356388A
(en)
*
1992-09-22
1994-10-18
Target Therapeutics, Inc.
Perfusion catheter system
US5358493A
(en)
*
1993-02-18
1994-10-25
Scimed Life Systems, Inc.
Vascular access catheter and methods for manufacture thereof
US5257980A
(en)
*
1993-04-05
1993-11-02
Minimed Technologies, Ltd.
Subcutaneous injection set with crimp-free soft cannula
US5545149A
(en)
*
1993-06-25
1996-08-13
Medtronic, Inc.
Method of catheter segment attachment
US6001085A
(en)
*
1993-08-13
1999-12-14
Daig Corporation
Coronary sinus catheter
US5984909A
(en)
*
1993-08-13
1999-11-16
Daig Corporation
Coronary sinus catheter
US5954651A
(en)
1993-08-18
1999-09-21
Scimed Life Systems, Inc.
Catheter having a high tensile strength braid wire constraint
US5951495A
(en)
*
1993-12-22
1999-09-14
Scimed Life Systems, Inc.
Catheter having an adhesive braid wire constraint and method of manufacture
US6896842B1
(en)
1993-10-01
2005-05-24
Boston Scientific Corporation
Medical device balloons containing thermoplastic elastomers
CA2176389A1
(en)
*
1993-11-12
1995-05-18
Richard S. Jaraczewski
Small diameter, high torque catheter
CA2135143C
(en)
*
1993-12-22
2006-01-03
Todd A. Berg
Catheter joint with restraining device
JPH07178176A
(en)
*
1993-12-24
1995-07-18
Terumo Corp
Catheter
CA2137116A1
(en)
*
1994-01-07
1995-07-08
Todd A. Berg
Catheter joint with counterbore
US5403284A
(en)
*
1994-01-27
1995-04-04
The Kendall Company
Automatic lumen shut-off
US6858024B1
(en)
1994-02-14
2005-02-22
Scimed Life Systems, Inc.
Guide catheter having selected flexural modulus segments
US5911715A
(en)
*
1994-02-14
1999-06-15
Scimed Life Systems, Inc.
Guide catheter having selected flexural modulus segments
US5569218A
(en)
*
1994-02-14
1996-10-29
Scimed Life Systems, Inc.
Elastic guide catheter transition element
US5948489A
(en)
*
1994-03-03
1999-09-07
Cordis Corporation
Catheter having extruded, flexible, pliable and compliant marker band
US5533985A
(en)
*
1994-04-20
1996-07-09
Wang; James C.
Tubing
US5509910A
(en)
*
1994-05-02
1996-04-23
Medtronic, Inc.
Method of soft tip attachment for thin walled catheters
US5569221A
(en)
*
1994-07-07
1996-10-29
Ep Technologies, Inc.
Catheter component bond and method
US5496294A
(en)
*
1994-07-08
1996-03-05
Target Therapeutics, Inc.
Catheter with kink-resistant distal tip
US5524337A
(en)
*
1994-09-21
1996-06-11
Ep Technologies, Inc.
Method of securing ring electrodes onto catheter
US5667499A
(en)
*
1994-10-04
1997-09-16
Scimed Life Systems, Inc.
Guide catheter unibody
US5545151A
(en)
*
1994-11-22
1996-08-13
Schneider (Usa) Inc
Catheter having hydrophobic properties
SE9404486D0
(en)
*
1994-12-22
1994-12-22
Astra Ab
catheter
JPH10511871A
(en)
*
1995-01-04
1998-11-17
メドトロニック・インコーポレーテッド
Soft chip forming method
US5680873A
(en)
*
1995-03-02
1997-10-28
Scimed Life Systems, Inc.
Braidless guide catheter
US5601538A
(en)
*
1995-03-07
1997-02-11
Medtronic, Inc.
Flow directed catheter with hydrophilic distal end
US6824553B1
(en)
1995-04-28
2004-11-30
Target Therapeutics, Inc.
High performance braided catheter
JPH0976960A
(en)
*
1995-09-19
1997-03-25
Tsutomu Matsumoto
Lock for bicycle
US5700252A
(en)
*
1995-11-01
1997-12-23
Klingenstein; Ralph James
Lumen-seeking nasogastric tube and method
US6676623B2
(en)
2001-05-04
2004-01-13
Scimed Life Systems, Inc.
Drainage devices and methods
US6849069B1
(en)
1995-11-07
2005-02-01
Boston Scientitfic Corporation
Medical device with tail(s) for assisting flow of urine
US6991614B2
(en)
1995-11-07
2006-01-31
Boston Scientific Scimed, Inc.
Ureteral stent for improved patient comfort
DE69523185T2
(en)
*
1995-11-22
2002-06-20
Intra Vasc Nl B V
METHOD AND DEVICE FOR PRODUCING A CATHETER AND MANUFACTURED CATHETER
US5772641A
(en)
1995-12-12
1998-06-30
Medi-Dyne Inc.
Overlapping welds for catheter constructions
US5951929A
(en)
*
1995-12-12
1999-09-14
Medi-Dyne Inc.
Method for forming a catheter having overlapping welds
US6103037A
(en)
*
1995-12-12
2000-08-15
Medi-Dyne Inc.
Method for making a catheter having overlapping welds
SE9600276D0
(en)
*
1996-01-25
1996-01-25
Astra Ab
A wetting device for wetting a hydrophilic catheter and a urine collection bag incorporating said device
US5762996A
(en)
*
1996-04-15
1998-06-09
Lucas; Daniel R.
Silicone balloon catheter
US6090099A
(en)
*
1996-05-24
2000-07-18
Target Therapeutics, Inc.
Multi-layer distal catheter section
US5762637A
(en)
*
1996-08-27
1998-06-09
Scimed Life Systems, Inc.
Insert molded catheter tip
US5817057A
(en)
*
1996-09-13
1998-10-06
Micro Interventional Systems, Inc.
Fluid propulsion steerable catheter and method
US5743891A
(en)
*
1996-10-25
1998-04-28
Act Medical, Inc.
Subcutaneous safety catheter assembly
US5755704A
(en)
*
1996-10-29
1998-05-26
Medtronic, Inc.
Thinwall guide catheter
US6702789B1
(en)
*
1997-03-11
2004-03-09
Alcove Medical, Inc.
Catheter having insertion control mechanism and anti-bunching mechanism
US6165166A
(en)
*
1997-04-25
2000-12-26
Schneider (Usa) Inc.
Trilayer, extruded medical tubing and medical devices incorporating such tubing
DE19721703A1
(en)
1997-05-23
1998-11-26
Angiomed Ag
Catheter system with high kink resistance
US5938653A
(en)
*
1997-06-09
1999-08-17
Scimed Life Systems, Inc.
Catheter having controlled flexibility and method of manufacture
US5947940A
(en)
1997-06-23
1999-09-07
Beisel; Robert F.
Catheter reinforced to prevent luminal collapse and tensile failure thereof
US6077258A
(en)
*
1997-10-03
2000-06-20
Scimed Life Systems, Inc.
Braided angiography catheter having full length radiopacity and controlled flexibility
US5908413A
(en)
*
1997-10-03
1999-06-01
Scimed Life Systems, Inc.
Radiopaque catheter and method of manufacture thereof
US5891110A
(en)
*
1997-10-15
1999-04-06
Scimed Life Systems, Inc.
Over-the-wire catheter with improved trackability
US6048338A
(en)
*
1997-10-15
2000-04-11
Scimed Life Systems, Inc.
Catheter with spiral cut transition member
US6511468B1
(en)
1997-10-17
2003-01-28
Micro Therapeutics, Inc.
Device and method for controlling injection of liquid embolic composition
US6036682A
(en)
*
1997-12-02
2000-03-14
Scimed Life Systems, Inc.
Catheter having a plurality of integral radiopaque bands
US6325818B1
(en)
*
1999-10-07
2001-12-04
Innercool Therapies, Inc.
Inflatable cooling apparatus for selective organ hypothermia
US6096068A
(en)
1998-01-23
2000-08-01
Innercool Therapies, Inc.
Selective organ cooling catheter and method of using the same
US6464716B1
(en)
1998-01-23
2002-10-15
Innercool Therapies, Inc.
Selective organ cooling apparatus and method
US6471717B1
(en)
1998-03-24
2002-10-29
Innercool Therapies, Inc.
Selective organ cooling apparatus and method
US6231595B1
(en)
1998-03-31
2001-05-15
Innercool Therapies, Inc.
Circulating fluid hypothermia method and apparatus
CA2320377C
(en)
1998-02-24
2008-07-08
Boston Scientific Limited
High flow rate dialysis catheters and related methods
US6113579A
(en)
*
1998-03-04
2000-09-05
Scimed Life Systems, Inc.
Catheter tip designs and methods for improved stent crossing
US6517515B1
(en)
1998-03-04
2003-02-11
Scimed Life Systems, Inc.
Catheter having variable size guide wire lumen
US6126650A
(en)
*
1998-06-30
2000-10-03
Cordis Corporation
Flow directed catheter having radiopaque strain relief segment
US6464684B1
(en)
1998-09-09
2002-10-15
Scimed Life Systems, Inc.
Catheter having regions of differing braid densities and methods of manufacture therefor
US7314477B1
(en)
1998-09-25
2008-01-01
C.R. Bard Inc.
Removable embolus blood clot filter and filter delivery unit
US6245053B1
(en)
1998-11-09
2001-06-12
Medtronic, Inc.
Soft tip guiding catheter and method of fabrication
US6591472B1
(en)
*
1998-12-08
2003-07-15
Medtronic, Inc.
Multiple segment catheter and method of fabrication
US6197015B1
(en)
1998-12-09
2001-03-06
Medi-Dyne Inc.
Angiography catheter with sections having different mechanical properties
US6264630B1
(en)
1998-12-23
2001-07-24
Scimed Life Systems, Inc.
Balloon catheter having an oscillating tip configuration
US6171295B1
(en)
1999-01-20
2001-01-09
Scimed Life Systems, Inc.
Intravascular catheter with composite reinforcement
US6942654B1
(en)
2000-01-19
2005-09-13
Scimed Life Systems, Inc.
Intravascular catheter with axial member
US6709429B1
(en)
2000-01-19
2004-03-23
Scimed Life Systems, Inc.
Intravascular catheter with multiple axial fibers
US6332892B1
(en)
1999-03-02
2001-12-25
Scimed Life Systems, Inc.
Medical device with one or more helical coils
US6508804B2
(en)
1999-07-28
2003-01-21
Scimed Life Systems, Inc.
Catheter having continuous lattice and coil reinforcement
US6500285B2
(en)
*
1999-08-23
2002-12-31
Scimed Life Systems, Inc.
Method of making a catheter having interlocking ribbed bond regions
US6702802B1
(en)
1999-11-10
2004-03-09
Endovascular Technologies, Inc.
Catheters with improved transition
US6575959B1
(en)
1999-12-27
2003-06-10
Scimed Life Systems, Inc.
Catheter incorporating an insert molded hub and method of manufacturing
US6322586B1
(en)
2000-01-10
2001-11-27
Scimed Life Systems, Inc.
Catheter tip designs and method of manufacture
US6648874B2
(en)
2000-02-28
2003-11-18
Scimed Life Systems, Inc.
Guide catheter with lubricious inner liner
FR2805750B1
(en)
*
2000-03-02
2002-09-20
Braun Celsa Sa
SHEATH FOR A MEDICAL INTRODUCER AND ITS MANUFACTURING METHOD
US6408214B1
(en)
2000-07-11
2002-06-18
Medtronic, Inc.
Deflectable tip catheter for CS pacing
US6623504B2
(en)
2000-12-08
2003-09-23
Scimed Life Systems, Inc.
Balloon catheter with radiopaque distal tip
US20020095205A1
(en)
*
2001-01-12
2002-07-18
Edwin Tarun J.
Encapsulated radiopaque markers
US6979343B2
(en)
*
2001-02-14
2005-12-27
Ev3 Inc.
Rolled tip recovery catheter
US6576000B2
(en)
2001-03-06
2003-06-10
Scimed Life Systems, Inc.
Devices and methods for tissue repair
US6719804B2
(en)
2001-04-02
2004-04-13
Scimed Life Systems, Inc.
Medical stent and related methods
US6652507B2
(en)
2001-07-03
2003-11-25
Scimed Life Systems, Inc.
Intravascular catheter having multi-layered tip
US6620202B2
(en)
2001-10-16
2003-09-16
Scimed Life Systems, Inc.
Medical stent with variable coil and related methods
US7201763B2
(en)
2001-10-24
2007-04-10
Boston Scientific Scimed, Inc.
Distal balloon waist material relief and method of manufacture
US7018346B2
(en)
2001-12-18
2006-03-28
Scimed Life Systems, Inc.
Guide wire with adjustable flexibility
US6945970B2
(en)
2001-12-27
2005-09-20
Scimed Life Systems, Inc.
Catheter incorporating a curable polymer layer to control flexibility and method of manufacture
US9204956B2
(en)
2002-02-20
2015-12-08
C. R. Bard, Inc.
IVC filter with translating hooks
US7288109B2
(en)
*
2002-04-04
2007-10-30
Innercool Therapies. Inc.
Method of manufacturing a heat transfer element for in vivo cooling without undercuts
US9017308B2
(en)
2002-05-21
2015-04-28
Boston Scientific Scimed, Inc.
Insert molded hub and strain relief
US8465469B2
(en)
*
2002-09-12
2013-06-18
Medtronic Vascular, Inc.
Reinforced catheter and methods of making
US7322988B2
(en)
*
2003-01-17
2008-01-29
Boston Scientific Scimed, Inc.
Methods of forming catheters with soft distal tips
US8377035B2
(en)
2003-01-17
2013-02-19
Boston Scientific Scimed, Inc.
Unbalanced reinforcement members for medical device
JP4898992B2
(en)
2003-04-14
2012-03-21
クック メディカル テクノロジーズ エルエルシー
Large diameter delivery catheter / sheath
EP1631343B1
(en)
2003-04-28
2007-11-14
Cook Incorporated
Flexible introducer sheath with varying durometer
JP4653104B2
(en)
*
2003-06-10
2011-03-16
ルーメンド インコーポレイテッド
Catheter apparatus and method for opening a vascular occlusion
US7597830B2
(en)
*
2003-07-09
2009-10-06
Boston Scientific Scimed, Inc.
Method of forming catheter distal tip
JP2005058304A
(en)
*
2003-08-08
2005-03-10
Terumo Corp
Introducer sheath
US7824392B2
(en)
2003-08-20
2010-11-02
Boston Scientific Scimed, Inc.
Catheter with thin-walled braid
US7615043B2
(en)
2003-08-20
2009-11-10
Boston Scientific Scimed, Inc.
Medical device incorporating a polymer blend
US7955313B2
(en)
*
2003-12-17
2011-06-07
Boston Scientific Scimed, Inc.
Composite catheter braid
US20050149176A1
(en)
*
2003-12-29
2005-07-07
Scimed Life Systems, Inc.
Selectively light curable support members for medical devices
US7641647B2
(en)
*
2003-12-29
2010-01-05
Boston Scientific Scimed, Inc.
Medical device with modified marker band
US7468070B2
(en)
2004-01-23
2008-12-23
Boston Scientific Scimed, Inc.
Stent delivery catheter
US8535293B2
(en)
*
2004-04-13
2013-09-17
Gyrus Acmi, Inc.
Atraumatic ureteral access sheath
US20050273076A1
(en)
*
2004-06-07
2005-12-08
C.R. Bard, Inc.
Subcutaneous infusion devices
US7662144B2
(en)
2004-06-22
2010-02-16
Boston Scientific Scimed, Inc.
Catheter shaft with improved manifold bond
US7704267B2
(en)
2004-08-04
2010-04-27
C. R. Bard, Inc.
Non-entangling vena cava filter
US7794473B2
(en)
2004-11-12
2010-09-14
C.R. Bard, Inc.
Filter delivery system
US7828790B2
(en)
2004-12-03
2010-11-09
Boston Scientific Scimed, Inc.
Selectively flexible catheter and method of use
US7815599B2
(en)
2004-12-10
2010-10-19
Boston Scientific Scimed, Inc.
Catheter having an ultra soft tip and methods for making the same
US7744574B2
(en)
2004-12-16
2010-06-29
Boston Scientific Scimed, Inc.
Catheter tip to reduce wire lock
US20060142733A1
(en)
*
2004-12-23
2006-06-29
Andrew Forsberg
Catheter tip and method of attaching a catheter tip to a catheter shaft
US7976518B2
(en)
2005-01-13
2011-07-12
Corpak Medsystems, Inc.
Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
US8267954B2
(en)
2005-02-04
2012-09-18
C. R. Bard, Inc.
Vascular filter with sensing capability
US8864730B2
(en)
2005-04-12
2014-10-21
Rochester Medical Corporation
Silicone rubber male external catheter with absorbent and adhesive
EP1879520B1
(en)
2005-05-09
2013-03-13
Angiomed GmbH & Co. Medizintechnik KG
Implant delivery device
US9056180B2
(en)
*
2005-05-12
2015-06-16
Boston Scientific Scimed, Inc.
Tip with encapsulated marker band
JP5102201B2
(en)
2005-05-12
2012-12-19
シー・アール・バード・インコーポレーテッド
Removable embolic clot filter
EP1912696A1
(en)
2005-08-09
2008-04-23
C.R.Bard, Inc.
Embolus blood clot filter and delivery system
US7550053B2
(en)
*
2006-01-26
2009-06-23
Ilh, Llc
Catheters with lubricious linings and methods for making and using them
US7553387B2
(en)
2005-10-04
2009-06-30
Ilh, Llc
Catheters with lubricious linings and methods for making and using them
US20070088296A1
(en)
*
2005-10-04
2007-04-19
Leeflang Stephen A
Catheters with lubricious linings and methods for making and using them
US8070898B2
(en)
*
2005-10-04
2011-12-06
Clph, Llc
Catheters with lubricious linings and methods for making and using them
US9974887B2
(en)
2005-10-04
2018-05-22
Clph, Llc
Catheters with lubricious linings and methods for making and using them
US7556710B2
(en)
*
2005-10-04
2009-07-07
Ilh, Llc
Catheters with lubricious linings and methods for making and using them
EP1948074A2
(en)
2005-11-18
2008-07-30
C.R.Bard, Inc.
Vena cava filter with filament
WO2007064731A2
(en)
*
2005-12-02
2007-06-07
C.R. Bard, Inc.
Helical vena cava filter
US10188496B2
(en)
2006-05-02
2019-01-29
C. R. Bard, Inc.
Vena cava filter formed from a sheet
WO2007143602A2
(en)
2006-06-05
2007-12-13
C.R. Bard Inc.
Embolus blood clot filter utilizable with a single delivery system or a single retrieval system in one of a femoral or jugular access
US20080125752A1
(en)
*
2006-08-09
2008-05-29
Boston Scientific Scimed, Inc.
Catheter assembly having a modified reinforcement layer
US8419658B2
(en)
*
2006-09-06
2013-04-16
Boston Scientific Scimed, Inc.
Medical device including structure for crossing an occlusion in a vessel
US20080108974A1
(en)
*
2006-10-20
2008-05-08
Vital Signs, Inc.
Reinforced catheter with radiopaque distal tip and process of manufacture
US8945058B2
(en)
*
2006-11-22
2015-02-03
Applied Medical Resources Corporation
Trocar cannula with atraumatic tip
US8556914B2
(en)
2006-12-15
2013-10-15
Boston Scientific Scimed, Inc.
Medical device including structure for crossing an occlusion in a vessel
US7765015B2
(en)
*
2007-01-12
2010-07-27
Cardiac Pacemakers, Inc.
Lead with inflatable fixation mechanism
US20080183103A1
(en)
*
2007-01-25
2008-07-31
Cardiac Pacemakers, Inc.
Bulbous distal ended catheter
US8673100B2
(en)
*
2007-10-19
2014-03-18
Stephen A. Leeflang
Strip lined catheters and methods for constructing and processing strip lined catheters
US7841994B2
(en)
2007-11-02
2010-11-30
Boston Scientific Scimed, Inc.
Medical device for crossing an occlusion in a vessel
US8684999B2
(en)
*
2007-12-31
2014-04-01
St. Jude Medical, Atrial Fibrillation Division, Inc.
Catheter shaft and method of manufacture
FR2927541B1
(en)
*
2008-02-15
2023-03-03
Vygon
SIMPLIFICATION AND IMPROVEMENT OF MULTILUMERA CENTRAL VENOUS CATHETERS.
US9750625B2
(en)
2008-06-11
2017-09-05
C.R. Bard, Inc.
Catheter delivery device
CN103263718B
(en)
2008-08-19
2016-02-24
泰科保健集团有限合伙公司
The microguide of separable end
US8403896B2
(en)
*
2008-08-29
2013-03-26
AUST Development, LLC
Apparatus and methods for making coated liners and tubular devices including such liners
US8454578B2
(en)
*
2009-02-18
2013-06-04
AUST Development, LLC
Apparatus and methods for making coated liners and tubular devices including such liners
ES2717424T3
(en)
2009-07-29
2019-06-21
Bard Inc C R
Tubular filter
US9211389B2
(en)
2009-12-07
2015-12-15
Cook Medical Technologies Llc
Offset soft tip with proposed tooling
US9033996B1
(en)
2010-03-01
2015-05-19
Michael B. West
System, method and apparatus for placing therapeutic devices in a heart
US10111768B1
(en)
2010-03-01
2018-10-30
Mwest, Llc
System, method and apparatus for placing therapeutic devices in a heart
US9192752B2
(en)
2010-07-05
2015-11-24
AUST Development, LLC
Serial valves and hubs for tubular devices and methods for making and using them
US9707375B2
(en)
2011-03-14
2017-07-18
Rochester Medical Corporation, a subsidiary of C. R. Bard, Inc.
Catheter grip and method
JP2013031478A
(en)
*
2011-07-29
2013-02-14
Forte Grow Medical Kk
Angiographic catheter
US9028441B2
(en)
2011-09-08
2015-05-12
Corpak Medsystems, Inc.
Apparatus and method used with guidance system for feeding and suctioning
CN103998091B
(en)
2011-10-21
2017-03-22
波士顿科学西美德公司
locking catheter hub
US8945025B2
(en)
2011-12-30
2015-02-03
St. Jude Medical, Atrial Fibrillation Division, Inc.
Catheter with atraumatic tip
US10124087B2
(en)
2012-06-19
2018-11-13
Covidien Lp
Detachable coupling for catheter
US9872969B2
(en)
2012-11-20
2018-01-23
Rochester Medical Corporation, a subsidiary of C.R. Bard, Inc.
Catheter in bag without additional packaging
US10092728B2
(en)
2012-11-20
2018-10-09
Rochester Medical Corporation, a subsidiary of C.R. Bard, Inc.
Sheath for securing urinary catheter
EP2934656B1
(en)
*
2012-12-20
2019-03-13
Volcano Corporation
Distal catheter tip formation
US9629978B2
(en)
2013-05-20
2017-04-25
Clph, Llc
Catheters with intermediate layers and methods for making them
US9833596B2
(en)
2013-08-30
2017-12-05
Novasentis, Inc.
Catheter having a steerable tip
MX2017002457A
(en)
2014-08-26
2017-05-19
Bard Inc C R
Urinary catheter.
US9808598B2
(en)
2015-02-04
2017-11-07
Teleflex Medical Incorporated
Flexible tip dilator
EP3056238B1
(en)
2015-02-13
2019-08-28
Asahi Intecc Co., Ltd.
Catheter
EP3508243B1
(en)
*
2016-09-05
2021-04-14
Terumo Kabushiki Kaisha
Catheter
WO2019060309A1
(en)
2017-09-19
2019-03-28
C.R. Bard, Inc.
Urinary catheter bridging device, systems and methods thereof
US20190290105A1
(en)
*
2018-03-26
2019-09-26
SPIRATION, INC., d/b/a OLYMPUS RESPIRATORY AMERICA
Compliant, atraumatic sheath tips
JP2021526041A
(en)
*
2018-06-05
2021-09-30
メドトロニック・ヴァスキュラー・インコーポレーテッド
Medical catheter
JP7353303B2
(en)
2018-06-05
2023-09-29
メドトロニック・ヴァスキュラー・インコーポレーテッド
medical catheter
US11559663B2
(en)
2018-06-05
2023-01-24
Medtronic Vascular, Inc.
Catheter including slidable push grip
Citations (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3485234A
(en)
*
1966-04-13
1969-12-23
Cordis Corp
Tubular products and method of making same
US4531943A
(en)
*
1983-08-08
1985-07-30
Angiomedics Corporation
Catheter with soft deformable tip
US4636346A
(en)
*
1984-03-08
1987-01-13
Cordis Corporation
Preparing guiding catheter
Family Cites Families (17)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1699590A
(en)
*
1927-08-26
1929-01-22
Moorman Mfg Co
Sheep-dosing device
US3618614A
(en)
*
1969-05-06
1971-11-09
Scient Tube Products Inc
Nontoxic radiopaque multiwall medical-surgical tubings
US3890976A
(en)
*
1972-10-26
1975-06-24
Medical Products Corp
Catheter tip assembly
US3924632A
(en)
*
1972-12-07
1975-12-09
William A Cook
Fiber glass reinforced catheter
US3924637A
(en)
*
1974-12-23
1975-12-09
Arthur H Swanson
Tracheotomy tube
US4052989A
(en)
*
1975-10-30
1977-10-11
Medical Evaluation Devices And Instruments Corporation
Needle catheter
US4044765A
(en)
*
1975-12-17
1977-08-30
Medical Evaluation Devices And Instruments Corporation
Flexible tube for intra-venous feeding
DK71779A
(en)
*
1979-02-19
1980-08-20
Surgimed As
PROCEDURE AND APPARATUS FOR MANUFACTURING PIPE PRODUCTS ISA Catheters
DE2910749C2
(en)
*
1979-03-19
1982-11-25
Dr. Eduard Fresenius, Chemisch-pharmazeutische Industrie KG, 6380 Bad Homburg
Catheter with contrast stripes
US4430083A
(en)
*
1981-03-06
1984-02-07
American Hospital Supply Corporation
Infusion catheter
US4425919A
(en)
*
1981-07-27
1984-01-17
Raychem Corporation
Torque transmitting catheter apparatus
US4690175A
(en)
*
1981-11-17
1987-09-01
Kabushiki Kaisha Medos Kenkyusho
Flexible tube for endoscope
US4516972A
(en)
*
1982-01-28
1985-05-14
Advanced Cardiovascular Systems, Inc.
Guiding catheter and method of manufacture
US4563181A
(en)
*
1983-02-18
1986-01-07
Mallinckrodt, Inc.
Fused flexible tip catheter
US4596563A
(en)
*
1983-06-09
1986-06-24
Cordis Corporation
Thin-walled multi-layered catheter having a fuseless tip
US4547193A
(en)
*
1984-04-05
1985-10-15
Angiomedics Incorporated
Catheter having embedded multi-apertured film
US4739768B2
(en)
*
1986-06-02
1995-10-24
Target Therapeutics Inc
Catheter for guide-wire tracking
1987
1987-08-14
US
US07/085,392
patent/US4863442A/en
not_active
Expired - Lifetime
1988
1988-08-11
EP
EP88307443A
patent/EP0303487A3/en
not_active
Ceased
1988-08-11
AU
AU20674/88A
patent/AU621548B2/en
not_active
Ceased
1988-08-15
JP
JP63203055A
patent/JPH072184B2/en
not_active
Expired - Lifetime
Patent Citations (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3485234A
(en)
*
1966-04-13
1969-12-23
Cordis Corp
Tubular products and method of making same
US4531943A
(en)
*
1983-08-08
1985-07-30
Angiomedics Corporation
Catheter with soft deformable tip
US4636346A
(en)
*
1984-03-08
1987-01-13
Cordis Corporation
Preparing guiding catheter
Also Published As
Publication number
Publication date
EP0303487A2
(en)
1989-02-15
JPS6468276A
(en)
1989-03-14
AU2067488A
(en)
1989-02-16
US4863442A
(en)
1989-09-05
EP0303487A3
(en)
1990-05-02
JPH072184B2
(en)
1995-01-18
Similar Documents
Publication
Publication Date
Title
AU621548B2
(en)
1992-03-19
Soft tip catheter
US5395332A
(en)
1995-03-07
Intravascualr catheter with distal tip guide wire lumen
US5571087A
(en)
1996-11-05
Intravascular catheter with distal tip guide wire lumen
JP4139026B2
(en)
2008-08-27
Flexible tip guide catheter and method of manufacturing the same
US6575959B1
(en)
2003-06-10
Catheter incorporating an insert molded hub and method of manufacturing
US5300025A
(en)
1994-04-05
Dilatation catheter having a coil supported inflation lumen
EP0656794B1
(en)
1997-07-16
Dilatation catheter with stiffening wire
US6254549B1
(en)
2001-07-03
Guidewire replacement device with flexible intermediate section
US6669886B1
(en)
2003-12-30
Reinforced catheter and method of manufacture
US5217440A
(en)
1993-06-08
Multilaminate coiled film catheter construction
EP0608853B1
(en)
2003-04-02
Vascular dilatation instrument and catheter
US4753765A
(en)
1988-06-28
Method of making a catheter having a fuseless tip
US5980484A
(en)
1999-11-09
Dilation balloon for a single operator exchange catheter or similar device
US4551292A
(en)
1985-11-05
Method for making a catheter with a soft, deformable tip
US5769819A
(en)
1998-06-23
Catheter distal tip component
US5507766A
(en)
1996-04-16
Vascular dilatation instrument and catheter
EP0421650A1
(en)
1991-04-10
Multilaminate coiled film catheter construction
US20020139785A1
(en)
2002-10-03
Catheter providing intraluminal access
WO1994004216A9
(en)
1994-06-23
Dilatation catheter with stiffening wire
JP3432060B2
(en)
2003-07-28
Vasodilator
JP2003527226A
(en)
2003-09-16
Introduction sheath
WO1994019039A1
(en)
1994-09-01
Vascular access catheter and methods for manufacture
JPH06507105A
(en)
1994-08-11
Intravascular catheter with guidewire distal lumen and intermediate member
JPH0994296A
(en)
1997-04-08
Catheter
US5108525A
(en)
1992-04-28
Method of twisting and heat shrinking a tubular catheter member section onto an inner member
Download PDF in English
