WO2005067387A3 - Apparatus and method for calculating velocity of blood pressure change - Google Patents

Apparatus and method for calculating velocity of blood pressure change Download PDF

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Publication number
WO2005067387A3
WO2005067387A3 PCT/IL2005/000054 IL2005000054W WO2005067387A3 WO 2005067387 A3 WO2005067387 A3 WO 2005067387A3 IL 2005000054 W IL2005000054 W IL 2005000054W WO 2005067387 A3 WO2005067387 A3 WO 2005067387A3
Authority
WO
WIPO (PCT)
Prior art keywords
artery
sensors
blood
pressure
limb
Prior art date
Application number
PCT/IL2005/000054
Other languages
French (fr)
Other versions
WO2005067387A2 (en
Inventor
Miguel Gorenberg
Hector Rotstein
Alon Marmor
Michael Naroditzky
Original Assignee
Cardiowatch Ltd
Miguel Gorenberg
Hector Rotstein
Alon Marmor
Michael Naroditzky
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 Cardiowatch Ltd, Miguel Gorenberg, Hector Rotstein, Alon Marmor, Michael Naroditzky filed Critical Cardiowatch Ltd
Publication of WO2005067387A2 publication Critical patent/WO2005067387A2/en
Publication of WO2005067387A3 publication Critical patent/WO2005067387A3/en

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
    • 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
    • A61B5/7235—Details of waveform analysis
    • A61B5/7239—Details of waveform analysis using differentiation including higher order derivatives
    • 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
    • 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
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0261—Strain gauges
    • 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

Abstract

A non-invasive apparatus for measuring the variations of the blood pressure of a patient with respect to time, the apparatus comprising a pressure applying element mountable on a limb of the patient for applying pressure high enough to make a segment of an artery within the limb achieve a collapsed state and empty it from blood at least momentarily; a multi-sensors coupled to the pressure applying element, sensing mechanical changes corresponding to volumetric changes in the artery as the artery progressively recuperates from its collapsed state; processing unit communicating with the sensors for receiving output corresponding to the mechanical changes from the sensors and computing factors correlated with blood flow and calculate parameters indicating heart performance. A say multi­sensor with sensing material made from piezo-resistive material.
PCT/IL2005/000054 2004-01-16 2005-01-16 Apparatus and method for calculating velocity of blood pressure change WO2005067387A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US53681404P 2004-01-16 2004-01-16
US53681504P 2004-01-16 2004-01-16
US60/536,814 2004-01-16
US60/536,815 2004-01-16

Publications (2)

Publication Number Publication Date
WO2005067387A2 WO2005067387A2 (en) 2005-07-28
WO2005067387A3 true WO2005067387A3 (en) 2007-05-18

Family

ID=34798869

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2005/000054 WO2005067387A2 (en) 2004-01-16 2005-01-16 Apparatus and method for calculating velocity of blood pressure change

Country Status (1)

Country Link
WO (1) WO2005067387A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008024737B3 (en) 2008-05-20 2010-01-07 SectorCon Ingenieurgesellschaft für System- und Softwaretechnik mbH Piezoelectric sensor for pressure fluctuation measurement
US9814401B2 (en) * 2012-07-06 2017-11-14 Covidien Lp Angiosome-based perfusion monitoring system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368039A (en) * 1993-07-26 1994-11-29 Moses; John A. Method and apparatus for determining blood pressure
US5913826A (en) * 1996-06-12 1999-06-22 K-One Technologies Wideband external pulse cardiac monitor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368039A (en) * 1993-07-26 1994-11-29 Moses; John A. Method and apparatus for determining blood pressure
US5913826A (en) * 1996-06-12 1999-06-22 K-One Technologies Wideband external pulse cardiac monitor

Also Published As

Publication number Publication date
WO2005067387A2 (en) 2005-07-28

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