CA2055850A1 - Tonometry system for determining blood pressure - Google Patents

Tonometry system for determining blood pressure

Info

Publication number
CA2055850A1
CA2055850A1 CA002055850A CA2055850A CA2055850A1 CA 2055850 A1 CA2055850 A1 CA 2055850A1 CA 002055850 A CA002055850 A CA 002055850A CA 2055850 A CA2055850 A CA 2055850A CA 2055850 A1 CA2055850 A1 CA 2055850A1
Authority
CA
Canada
Prior art keywords
diaphragm
blood pressure
patient
electromagnetic radiation
continuous
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.)
Granted
Application number
CA002055850A
Other languages
French (fr)
Other versions
CA2055850C (en
Inventor
Robert D. Butterfield
Kenneth J. Pytel
Charles R. Holdaway
Stephen A. Martin
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.)
CareFusion 303 Inc
Original Assignee
Robert D. Butterfield
Kenneth J. Pytel
Charles R. Holdaway
Stephen A. Martin
Ivac Corporation
Ivac Medical Systems, Inc.
Alaris Medical Systems, Inc.
Ivac Holdings, 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.)
Filing date
Publication date
Application filed by Robert D. Butterfield, Kenneth J. Pytel, Charles R. Holdaway, Stephen A. Martin, Ivac Corporation, Ivac Medical Systems, Inc., Alaris Medical Systems, Inc., Ivac Holdings, Inc. filed Critical Robert D. Butterfield
Publication of CA2055850A1 publication Critical patent/CA2055850A1/en
Application granted granted Critical
Publication of CA2055850C publication Critical patent/CA2055850C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A61B5/02422—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation within occluders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0242—Operational features adapted to measure environmental factors, e.g. temperature, pollution
    • A61B2560/0247—Operational features adapted to measure environmental factors, e.g. temperature, pollution for compensation or correction of the measured physiological value
    • A61B2560/0252—Operational features adapted to measure environmental factors, e.g. temperature, pollution for compensation or correction of the measured physiological value using ambient temperature
    • 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
    • A61B2562/0247—Pressure sensors
    • 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
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/043—Arrangements of multiple sensors of the same type in a linear array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal

Abstract

A tissue contact stress sensing system incorporates a semiconductor assembly and a continuous diaphragm to noninvasively determine the intra-arterial blood pressure of a patient. The system comprises a continuous diaphragm placed against a patient's tissue which covers an underlying artery.
The semiconductor assembly is placed in close proximity to and spaced apart from the diaphragm for directly irradiating the diaphragm with electromagnetic radiation and receiving a portion of the electromagnetic radiation which is reflected from the continuous diaphragm. The disclosed system also utilizes a technique for minimizing the system errors associated with temperature drift and aging of the sensor.
CA002055850A 1990-11-30 1991-11-19 Tonometry system for determining blood pressure Expired - Fee Related CA2055850C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/621,165 US5158091A (en) 1990-11-30 1990-11-30 Tonometry system for determining blood pressure
US621,165 1990-11-30

Publications (2)

Publication Number Publication Date
CA2055850A1 true CA2055850A1 (en) 1992-05-31
CA2055850C CA2055850C (en) 2001-08-14

Family

ID=24489012

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002055850A Expired - Fee Related CA2055850C (en) 1990-11-30 1991-11-19 Tonometry system for determining blood pressure

Country Status (7)

Country Link
US (2) US5158091A (en)
JP (2) JPH06292659A (en)
CA (1) CA2055850C (en)
DE (1) DE4139171A1 (en)
ES (1) ES2081733B1 (en)
FR (1) FR2669819B1 (en)
GB (1) GB2250816B (en)

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LT4368B (en) 1994-12-22 1998-08-25 Biochem Pharma Inc. Low molecular weight bicyclic thrombin inhibitors
US6057314A (en) * 1995-12-21 2000-05-02 Biochem Pharma Inc. Low molecular weight bicyclic thrombin inhibitors

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Also Published As

Publication number Publication date
GB2250816A (en) 1992-06-17
ES2081733A2 (en) 1996-03-01
FR2669819B1 (en) 1998-05-07
GB2250816B (en) 1994-09-14
US5284150A (en) 1994-02-08
JP2002330931A (en) 2002-11-19
GB9125385D0 (en) 1992-01-29
CA2055850C (en) 2001-08-14
US5158091A (en) 1992-10-27
DE4139171A1 (en) 1992-06-04
ES2081733B1 (en) 1996-11-16
ES2081733R (en) 1996-04-16
JPH06292659A (en) 1994-10-21
FR2669819A1 (en) 1992-06-05

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