GB1290130A – – Google Patents
GB1290130A – – Google Patents
Info
Publication number
GB1290130A
GB1290130A
GB1290130DA
GB1290130A
GB 1290130 A
GB1290130 A
GB 1290130A
GB 1290130D A
GB1290130D A
GB 1290130DA
GB 1290130 A
GB1290130 A
GB 1290130A
Authority
GB
United Kingdom
Prior art keywords
hydrogen
detected
permeable
electrodes
valve
Prior art date
1970-10-01
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.)
Expired
Application number
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.)
1970-10-01
Filing date
1971-08-31
Publication date
1972-09-20
1971-08-31
Application filed
filed
Critical
1972-09-20
Publication of GB1290130A
publication
Critical
patent/GB1290130A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G01—MEASURING; TESTING
G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
G01M3/00—Investigating fluid-tightness of structures
G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
A61B5/00—Measuring for diagnostic purposes; Identification of persons
A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
A61B5/026—Measuring blood flow
A61B5/0275—Measuring blood flow using tracers, e.g. dye dilution
G—PHYSICS
G01—MEASURING; TESTING
G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
G—PHYSICS
G01—MEASURING; TESTING
G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
G01M3/00—Investigating fluid-tightness of structures
G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
Abstract
1290130 Electro-chemical analysis F HOFFMANN-LA ROCHE & CO A G 31 Aug 1971 [1 Oct 1970] 40636/71 Heading G1N A method of detecting presence or measuring flow, uses a marking substance introduced into the sample through a wall or membrane permeable to the substance and detected by an electrode external to another permeable wall section. Applications mentioned are measuring flow of blood and testing for leaks. As shown Fig. 2 water flowing in a tube 16 is «marked» by hydrogen admitted through a valve 23 to a hydrogenpermeable membrane 18 e.g. of P.T.F.E., and the arrival of the hydrogen downstream is detected by electrodes 13, 20 abutting a permeable partition 21. The resulting signal from the electrodes is amplified at 24 and applied to a paper-feed type recorder 25 which is started simultaneously with the opening of the hydrogen valve. For determining blood circulation the patient inhales one breath of 10% hydrogen in nitrogen gas. The hydrogen is absorbed in the lungs and detected when it reaches an electrode applied to a suitable body part e.g. the corner of the eye Fig.3 (not shown).
GB1290130D
1970-10-01
1971-08-31
Expired
GB1290130A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
CH1454370A
CH530004A
(en)
1970-10-01
1970-10-01
Detection and measurement methods using marking substances
Publications (1)
Publication Number
Publication Date
GB1290130A
true
GB1290130A
(en)
1972-09-20
Family
ID=4401690
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1290130D
Expired
GB1290130A
(en)
1970-10-01
1971-08-31
Country Status (6)
Country
Link
CH
(1)
CH530004A
(en)
DD
(1)
DD94917A5
(en)
DE
(1)
DE2145401A1
(en)
FR
(1)
FR2110905A5
(en)
GB
(1)
GB1290130A
(en)
NL
(1)
NL7112619A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2415804A1
(en)
*
1978-01-25
1979-08-24
Howmedica
METHOD AND DEVICE FOR DETECTION OF STRICTIONS IN DUCTS
GB2136963A
(en)
*
1983-02-09
1984-09-26
Avl Ag
A measuring set-up with at least one sensor for analysing a substance
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN1973761A
(en)
*
2005-11-28
2007-06-06
人宇生物科技股份有限公司
Blood circulation flow rate detecting system and method
1970
1970-10-01
CH
CH1454370A
patent/CH530004A/en
not_active
IP Right Cessation
1971
1971-08-31
GB
GB1290130D
patent/GB1290130A/en
not_active
Expired
1971-09-10
DE
DE19712145401
patent/DE2145401A1/en
active
Pending
1971-09-14
NL
NL7112619A
patent/NL7112619A/xx
unknown
1971-09-30
DD
DD15804871A
patent/DD94917A5/xx
unknown
1971-10-01
FR
FR7135508A
patent/FR2110905A5/fr
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2415804A1
(en)
*
1978-01-25
1979-08-24
Howmedica
METHOD AND DEVICE FOR DETECTION OF STRICTIONS IN DUCTS
GB2136963A
(en)
*
1983-02-09
1984-09-26
Avl Ag
A measuring set-up with at least one sensor for analysing a substance
Also Published As
Publication number
Publication date
NL7112619A
(en)
1972-04-05
DE2145401A1
(en)
1972-04-06
DD94917A5
(en)
1973-01-05
CH530004A
(en)
1972-10-31
FR2110905A5
(en)
1972-06-02
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Legal Events
Date
Code
Title
Description
1973-01-31
PS
Patent sealed
1973-06-06
CSNS
Application of which complete specification have been accepted and published, but patent is not sealed
