GB1333378A - Pressure measuremnet - Google Patents

Pressure measuremnet

Info

Publication number
GB1333378A
GB1333378A GB1333378DA GB1333378A GB 1333378 A GB1333378 A GB 1333378A GB 1333378D A GB1333378D A GB 1333378DA GB 1333378 A GB1333378 A GB 1333378A
Authority
GB
United Kingdom
Prior art keywords
pressure
tube
fluid
output signal
catheter
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
Application number
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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.)
Filing date
Publication date
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Publication of GB1333378A publication Critical patent/GB1333378A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61B5/02152—Measuring pressure in heart or blood vessels by means inserted into the body specially adapted for venous pressure

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1333378 Measuring pressure electrically NATIONAL RESEARCH DEVELOPMENT CORP 6 Jan 1971 [7 Oct 1969] 49191/69 Heading GIN A test fluid pressure P1 Fig. 2 and a reference fluid pressure P2 are applied alternately to a pressure transducer 5, the resulting output signal being processed to give an AC voltage whose amplitude is proportional to the pressure difference. The alternation is obtained by cam-operated chopper bars 12, 15 and the output signal is synchronously gated Fig. 3 to avoid the transients. To measure venous pressure a tube 21 Fig. 5 of a catheter is inserted into a blood vessel, the catheter comprising a closed tube 20 from which tube 21 protrudes, and a tube 22. Tubes 20, 22 contain flushing fluid and are open to the atmosphere to provide the reference pressure P2. An additional tube 23 removes overflow fluid. The fluid flushing operation is also synchronously gated to occur only when the output signal is cut off. (For Figures see next page)
GB1333378D 1969-10-07 1969-10-07 Pressure measuremnet Expired GB1333378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4919169 1969-10-07

Publications (1)

Publication Number Publication Date
GB1333378A true GB1333378A (en) 1973-10-10

Family

ID=10451500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1333378D Expired GB1333378A (en) 1969-10-07 1969-10-07 Pressure measuremnet

Country Status (1)

Country Link
GB (1) GB1333378A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500822A1 (en) * 1985-01-10 1986-07-10 Spiegelberg, Andreas, Dipl.-Ing., 1000 Berlin PRESSURE MEASUREMENT DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500822A1 (en) * 1985-01-10 1986-07-10 Spiegelberg, Andreas, Dipl.-Ing., 1000 Berlin PRESSURE MEASUREMENT DEVICE

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees