GB1322904A - Measurement of blood pressure - Google Patents

Measurement of blood pressure

Info

Publication number
GB1322904A
GB1322904A GB1322904DA GB1322904A GB 1322904 A GB1322904 A GB 1322904A GB 1322904D A GB1322904D A GB 1322904DA GB 1322904 A GB1322904 A GB 1322904A
Authority
GB
United Kingdom
Prior art keywords
pressure
laminar
stream
gas
jet
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.)
BIOLOG INSTR Ltd
Original Assignee
BIOLOG INSTR Ltd
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 BIOLOG INSTR Ltd filed Critical BIOLOG INSTR Ltd
Publication of GB1322904A publication Critical patent/GB1322904A/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
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • A61B5/0235—Valves specially adapted therefor

Abstract

1322904 Measuring blood pressure BIOLOGICAL INSTRUMENTS Ltd 3 May 1971 [9 Feb 1970] 6101/70 Heading ASK Apparatus for detecting the resumption of blood flow in a superficial artery in the measurement of blood pressure comprises means for producing a laminar stream of gas, a detector responsive to a pulse in said artery to produce a jet of gas which impinges on the laminar stream to render it turbulent, and indicating means responsive to the gas pressure reduction caused by the stream becoming turbulent. A laminar air flow is established between inlet and outlet pipes 8, 9, respectively, in a housing 7, the air flow being established by means of a suitable pump (not shown), and a pressure gauge 10 is provided in the outlet pipe 9. A housing 3 communicates with an inflatable cuff 1 forming a closed system which includes a pressure gauge 4. A compressible bellows 5 disposed within the housing 3 has an outlet pipe 6 having an aperture at its end directed towards the laminar air stream. A pulse in the artery causes an increase in pressure in the cuff 1 which compresses the bellows 5 to impinge a jet of air on the laminar air stream. Loss of laminar flow in the air stream is detected as a loss of pressure on pressure gauge 10. Alternatively, a bellows could be actuated electrically to produce the jet of gas in response to a pressure sensitive device on the patient.
GB1322904D 1970-02-09 1970-02-09 Measurement of blood pressure Expired GB1322904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB610170 1970-02-09

Publications (1)

Publication Number Publication Date
GB1322904A true GB1322904A (en) 1973-07-11

Family

ID=9808398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1322904D Expired GB1322904A (en) 1970-02-09 1970-02-09 Measurement of blood pressure

Country Status (1)

Country Link
GB (1) GB1322904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048060A1 (en) * 1980-09-12 1982-03-24 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO A device for the indirect, non-invasive and continuous measurement of blood pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048060A1 (en) * 1980-09-12 1982-03-24 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO A device for the indirect, non-invasive and continuous measurement of blood pressure

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Legal Events

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