CA2193826A1 - Electrical power amplifier for continuous cardiac output monitoring - Google Patents

Electrical power amplifier for continuous cardiac output monitoring

Info

Publication number
CA2193826A1
CA2193826A1 CA002193826A CA2193826A CA2193826A1 CA 2193826 A1 CA2193826 A1 CA 2193826A1 CA 002193826 A CA002193826 A CA 002193826A CA 2193826 A CA2193826 A CA 2193826A CA 2193826 A1 CA2193826 A1 CA 2193826A1
Authority
CA
Canada
Prior art keywords
cardiac output
power amplifier
continuous cardiac
patient
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.)
Granted
Application number
CA002193826A
Other languages
French (fr)
Other versions
CA2193826C (en
Inventor
Gary Carlson
Jeffrey A. Norris
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.)
Edwards Lifesciences Corp
Original Assignee
Gary Carlson
Jeffrey A. Norris
Baxter International Inc.
Edwards Lifesciences Corporation
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 Gary Carlson, Jeffrey A. Norris, Baxter International Inc., Edwards Lifesciences Corporation filed Critical Gary Carlson
Publication of CA2193826A1 publication Critical patent/CA2193826A1/en
Application granted granted Critical
Publication of CA2193826C publication Critical patent/CA2193826C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • 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
    • A61B5/026—Measuring blood flow
    • A61B5/0275—Measuring blood flow using tracers, e.g. dye dilution
    • 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
    • A61B5/026—Measuring blood flow
    • A61B5/0275—Measuring blood flow using tracers, e.g. dye dilution
    • A61B5/028—Measuring blood flow using tracers, e.g. dye dilution by thermo-dilution
    • 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
    • A61B5/026—Measuring blood flow
    • A61B5/029—Measuring or recording blood output from the heart, e.g. minute volume

Abstract

A continuous cardiac output monitor includes a general-purpose monitoring console (32) with local display (34) and communications facilities, and a module (40) removably interfacing with the console (32) to configure the latter for performing continuous cardiac output monitoring. The module (40) includes a switch-mode high efficiency power amplifier (60) for providing electrical heating power at a selected voltage, frequency, and wave form to a heating element (50) of a continuous cardiac output monitoring catheter (16), which catheter (16) at a distal end portion thereof is immersed in the blood flow of a patient (10). The catheter (16) effects a temperature transient in the patient's blood flow by the controlled application of electrical resistance heating utilizing electrical power from the power amplifier (60), and this temperature transient is sensed and used to derive a value for the patient's cardiac output.
CA002193826A 1994-06-29 1995-06-28 Electrical power amplifier for continuous cardiac output monitoring Expired - Lifetime CA2193826C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/268,217 US5636638A (en) 1994-06-29 1994-06-29 Electrical power amplifier for continuous cardiac output monitoring
US08/268,217 1994-06-29
PCT/US1995/007853 WO1996000519A1 (en) 1994-06-29 1995-06-28 Electrical power amplifier for continuous cardiac output monitoring

Publications (2)

Publication Number Publication Date
CA2193826A1 true CA2193826A1 (en) 1996-01-11
CA2193826C CA2193826C (en) 2003-08-26

Family

ID=23021984

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002193826A Expired - Lifetime CA2193826C (en) 1994-06-29 1995-06-28 Electrical power amplifier for continuous cardiac output monitoring

Country Status (6)

Country Link
US (5) US5636638A (en)
EP (1) EP0767622B1 (en)
JP (2) JP3303016B2 (en)
CA (1) CA2193826C (en)
DE (1) DE69532583T2 (en)
WO (1) WO1996000519A1 (en)

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US7593775B2 (en) * 2002-01-15 2009-09-22 Therapeutic Innovations Sports equipment with resonant muscle stimulator for developing muscle strength
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US20040065541A1 (en) * 2002-08-27 2004-04-08 Litton Systems, Inc. Stepped voltage controller for ceramic oxygen generating systems
US20040049241A1 (en) * 2002-09-10 2004-03-11 Therapeutic Innovations, Inc. Distributed muscle stimulator
US20040236385A1 (en) * 2003-01-31 2004-11-25 Therapeutic Innovations, Inc. Rectal resonant muscle stimulator
US20070066978A1 (en) * 2005-09-06 2007-03-22 Schafer Mark E Ultrasound medical devices and related methods
US20070167862A1 (en) * 2005-11-29 2007-07-19 Lopez George A Cardiac output measurement devices and methods
EP1830468A1 (en) * 2006-03-03 2007-09-05 STMicroelectronics S.r.l. Regulator of a digital-to-analog converter and relative converter
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US8109883B2 (en) 2006-09-28 2012-02-07 Tyco Healthcare Group Lp Cable monitoring apparatus
US8668651B2 (en) 2006-12-05 2014-03-11 Covidien Lp ECG lead set and ECG adapter system
EP2062528B1 (en) * 2007-11-23 2012-03-14 Pulsion Medical Systems AG Central venous sensor assembly for measuring physiological data for cardiac output determination and method of determining cardiac output
US20130053730A1 (en) * 2009-10-30 2013-02-28 National University Of Singapore Miniature Sensor Tip for Medical Devices and Method of Forming the Same
US20150297093A1 (en) * 2014-04-18 2015-10-22 Vivonics, Inc. Flow rate sensor system and method for non-invasively measuring the flow rate of a bodily fluid
US10583030B2 (en) 2015-05-28 2020-03-10 Larry J. Mattson Sleep device
USD919327S1 (en) 2018-09-19 2021-05-18 Damian Hagglund Massage mat

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Also Published As

Publication number Publication date
CA2193826C (en) 2003-08-26
EP0767622A1 (en) 1997-04-16
EP0767622B1 (en) 2004-02-18
JP2001189629A (en) 2001-07-10
JPH10505511A (en) 1998-06-02
JP3303016B2 (en) 2002-07-15
US5634470A (en) 1997-06-03
DE69532583D1 (en) 2004-03-25
US5594375A (en) 1997-01-14
WO1996000519A1 (en) 1996-01-11
US5701908A (en) 1997-12-30
DE69532583T2 (en) 2004-12-16
US5797964A (en) 1998-08-25
US5636638A (en) 1997-06-10

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20150629