GB1344758A - Pressure transducers - Google Patents
Pressure transducersInfo
- Publication number
- GB1344758A GB1344758A GB2852772A GB2852772A GB1344758A GB 1344758 A GB1344758 A GB 1344758A GB 2852772 A GB2852772 A GB 2852772A GB 2852772 A GB2852772 A GB 2852772A GB 1344758 A GB1344758 A GB 1344758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pad
- blood pressure
- diaphragm
- conduit
- measured
- Prior art date
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
- G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
- G01L9/0052—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of piezoresistive elements
-
- 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
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0261—Strain gauges
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Physiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Physics & Mathematics (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
1344758 Probes MILLAR INSTRUMENTS Inc 19 June 1972 [1 July 1971] 28527/72 Heading A5R [Also in Division G1] In a fluid pressure transducer, e.g. for measuring blood pressure, a piezo-resistive strain gauge member 10 comprised of two individual elements in the form of a pair of pads 20a or 20b interconnected by a reduced neck portion 22a or 22b and having their pads bonded together via insulating material, has the pad of one element fixed to a diaphragm 14 subjected to the fluid pressure and the other pad to a fixed member 12 whereby flexure of the diaphragm causes compression in one neck portion and tension in the other, conductive material being provided on the surface of each pad to form electrodes. As shown, the diaphragm comprises a rigid centre portion 16 and a flexible outer portion 18 secured in an opening in the member 12. The member 12 may form the flattened tip of a catheter such that the transducer 10 is arranged inside the catheter tip, Figs. 4-7 (not shown). The catheter tip can be used to measure blood pressure inside the body or to measure blood pressure supplied to a chamber outside the body, Fig. 11 (not shown). The difference between two pressures can be measured by dividing a compartment by a member 12 in the form of a disc, Figs. 9 and 10 (not shown). The pressure of fluid flowing in a conduit can be measured by arranging the member 12 in a cut-out portion of the conduit, Figs. 12 and 13 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15888471A | 1971-07-01 | 1971-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1344758A true GB1344758A (en) | 1974-01-23 |
Family
ID=22570137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2852772A Expired GB1344758A (en) | 1971-07-01 | 1972-06-19 | Pressure transducers |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS522636B1 (en) |
DE (1) | DE2231491C3 (en) |
FR (1) | FR2144399A5 (en) |
GB (1) | GB1344758A (en) |
IT (1) | IT972231B (en) |
NL (1) | NL155364B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2125561A (en) * | 1982-07-30 | 1984-03-07 | Cise Spa | Improved transducer for measuring the pressure of a fluid, in particular an aggressive fluid and at high temperature |
GB2154323A (en) * | 1984-02-14 | 1985-09-04 | Plessey Co Plc | Pressure sensor |
WO2005054777A1 (en) * | 2003-12-05 | 2005-06-16 | The Commonwealth Of Australia | Strain gauge |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5918051B2 (en) * | 1976-02-29 | 1984-04-25 | 三菱油化株式会社 | catheter |
DD260863A1 (en) * | 1987-06-29 | 1988-10-12 | Messgeraetewerk Zwonitz Veb K | PRESSURE TRANSDUCER |
EP1174079B1 (en) | 2000-07-22 | 2005-09-28 | BIOTRONIK Mess- und Therapiegeräte GmbH & Co Ingenieurbüro Berlin | Implantable measuring device especially a pressure measuring device for determination of the intracardiac or intraluminal blood pressure |
JP6213527B2 (en) * | 2015-06-30 | 2017-10-18 | 株式会社デンソー | Pressure sensor |
-
1972
- 1972-06-19 GB GB2852772A patent/GB1344758A/en not_active Expired
- 1972-06-27 DE DE19722231491 patent/DE2231491C3/en not_active Expired
- 1972-06-28 NL NL7208976A patent/NL155364B/en not_active IP Right Cessation
- 1972-06-30 FR FR7223699A patent/FR2144399A5/fr not_active Expired
- 1972-06-30 IT IT2648572A patent/IT972231B/en active
- 1972-07-01 JP JP47066200A patent/JPS522636B1/ja active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2125561A (en) * | 1982-07-30 | 1984-03-07 | Cise Spa | Improved transducer for measuring the pressure of a fluid, in particular an aggressive fluid and at high temperature |
GB2154323A (en) * | 1984-02-14 | 1985-09-04 | Plessey Co Plc | Pressure sensor |
WO2005054777A1 (en) * | 2003-12-05 | 2005-06-16 | The Commonwealth Of Australia | Strain gauge |
US7536919B2 (en) | 2003-12-05 | 2009-05-26 | The Commonwealth Of Australia - Department Of Defence | Strain gauge |
Also Published As
Publication number | Publication date |
---|---|
JPS522636B1 (en) | 1977-01-22 |
DE2231491B2 (en) | 1979-07-19 |
DE2231491A1 (en) | 1973-01-11 |
DE2231491C3 (en) | 1980-03-20 |
FR2144399A5 (en) | 1973-02-09 |
NL7208976A (en) | 1973-01-03 |
IT972231B (en) | 1974-05-20 |
NL155364B (en) | 1977-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |