CA2077089A1 - Intracranial pressure monitoring system - Google Patents

Intracranial pressure monitoring system

Info

Publication number
CA2077089A1
CA2077089A1 CA002077089A CA2077089A CA2077089A1 CA 2077089 A1 CA2077089 A1 CA 2077089A1 CA 002077089 A CA002077089 A CA 002077089A CA 2077089 A CA2077089 A CA 2077089A CA 2077089 A1 CA2077089 A1 CA 2077089A1
Authority
CA
Canada
Prior art keywords
measurement signal
fluid pressure
light
diode
cavity
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
CA002077089A
Other languages
French (fr)
Other versions
CA2077089C (en
Inventor
Ronald B. Beckman
Jesse Newton Bequette
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
Ronald B. Beckman
Jesse Newton Bequette
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 Ronald B. Beckman, Jesse Newton Bequette, Baxter International Inc., Edwards Lifesciences Corporation filed Critical Ronald B. Beckman
Publication of CA2077089A1 publication Critical patent/CA2077089A1/en
Application granted granted Critical
Publication of CA2077089C publication Critical patent/CA2077089C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G01L9/0077—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light
    • 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
    • A61B5/02154—Measuring pressure in heart or blood vessels by means inserted into the body by optical transmission
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/03—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs
    • A61B5/031—Intracranial pressure

Abstract

A catheter assembly (20) for measuring a fluid pressure in a body cavity includes an optical converter (39) responsive to an electrical power source for energizing a light-emitting diode (45) which has drift characteristics which vary in response to temperature. An optical sensor (22) is adapted to receive the light from the light-emitting diode (45) and to provide a measurement signal indicative of the fluid pressure in the cavity. This measurement signal has undesirable characteristics related to the thermal drift characteristics of the diode. A detection circuit (55) detects the measurement signal and provides an output signal indicative of fluid pressure in the cavity. A special filter (63) is included in this detection circuit (55) which has optical characteristics that substantially offset the undesirable characteristics of the measurement signal, so that the output signal is substantially independent of the temperature of the diode. A
power conversion circuit (36) enables the assembly to be energized by an excitation voltage which is provided in several different forms by various monitors.
CA002077089A 1990-02-26 1991-02-12 Intracranial pressure monitoring system Expired - Lifetime CA2077089C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US485,349 1990-02-26
US07/485,349 US5325865A (en) 1990-02-26 1990-02-26 Intracranial pressure monitoring system
PCT/US1991/000985 WO1991012767A1 (en) 1990-02-26 1991-02-12 Intracranial pressure monitoring system

Publications (2)

Publication Number Publication Date
CA2077089A1 true CA2077089A1 (en) 1991-08-27
CA2077089C CA2077089C (en) 2001-08-14

Family

ID=23927810

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002077089A Expired - Lifetime CA2077089C (en) 1990-02-26 1991-02-12 Intracranial pressure monitoring system

Country Status (6)

Country Link
US (1) US5325865A (en)
EP (1) EP0524188B1 (en)
JP (1) JP3062661B2 (en)
CA (1) CA2077089C (en)
DE (1) DE69118177T2 (en)
WO (1) WO1991012767A1 (en)

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US6537232B1 (en) 1997-05-15 2003-03-25 Regents Of The University Of Minnesota Intracranial pressure monitoring device and method for use in MR-guided drug delivery
US6120457A (en) * 1997-07-02 2000-09-19 Johnson & Johnson Professional, Inc. In vivo zeroing of catheter pressure sensor
US5928182A (en) * 1997-07-02 1999-07-27 Johnson & Johnson Professional, Inc. Pediatric programmable hydrocephalus valve
US6731976B2 (en) 1997-09-03 2004-05-04 Medtronic, Inc. Device and method to measure and communicate body parameters
US6248080B1 (en) 1997-09-03 2001-06-19 Medtronic, Inc. Intracranial monitoring and therapy delivery control device, system and method
US5935084A (en) * 1997-09-30 1999-08-10 Johnson & Johnson Professional, Inc. Inflatable pressure indicator
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US7209788B2 (en) * 2001-10-29 2007-04-24 Duke University Closed loop brain machine interface
US20030105409A1 (en) * 2001-11-14 2003-06-05 Donoghue John Philip Neurological signal decoding
US7317409B2 (en) 2002-01-30 2008-01-08 Tensys Medical, Inc. Apparatus and method for interfacing time-variant signals
US6993392B2 (en) * 2002-03-14 2006-01-31 Duke University Miniaturized high-density multichannel electrode array for long-term neuronal recordings
AU2003239957A1 (en) * 2002-06-04 2003-12-19 Cyberkinetics, Inc. Optically-connected implants and related systems and methods of use
US7212851B2 (en) 2002-10-24 2007-05-01 Brown University Research Foundation Microstructured arrays for cortex interaction and related methods of manufacture and use
US20040249302A1 (en) * 2003-06-09 2004-12-09 Cyberkinetics, Inc. Methods and systems for processing of brain signals
US20050143589A1 (en) * 2003-11-09 2005-06-30 Donoghue John P. Calibration systems and methods for neural interface devices
US20050113744A1 (en) * 2003-11-21 2005-05-26 Cyberkinetics, Inc. Agent delivery systems and related methods under control of biological electrical signals
US7751877B2 (en) * 2003-11-25 2010-07-06 Braingate Co., Llc Neural interface system with embedded id
US7647097B2 (en) * 2003-12-29 2010-01-12 Braingate Co., Llc Transcutaneous implant
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US20080214951A1 (en) * 2004-02-03 2008-09-04 Neuro Diagnostic Devices, Inc. Cerebrospinal Fluid Evaluation Systems
US20050203366A1 (en) * 2004-03-12 2005-09-15 Donoghue John P. Neurological event monitoring and therapy systems and related methods
US20060049957A1 (en) * 2004-08-13 2006-03-09 Surgenor Timothy R Biological interface systems with controlled device selector and related methods
WO2006041738A2 (en) * 2004-10-04 2006-04-20 Cyberkinetics Neurotechnology Systems, Inc. Biological interface system
US7946994B2 (en) 2004-10-07 2011-05-24 Tensys Medical, Inc. Compact apparatus and methods for non-invasively measuring hemodynamic parameters
US7901368B2 (en) * 2005-01-06 2011-03-08 Braingate Co., Llc Neurally controlled patient ambulation system
US8095209B2 (en) * 2005-01-06 2012-01-10 Braingate Co., Llc Biological interface system with gated control signal
WO2006073915A2 (en) * 2005-01-06 2006-07-13 Cyberkinetics Neurotechnology Systems, Inc. Patient training routine for biological interface system
US20060189901A1 (en) * 2005-01-10 2006-08-24 Flaherty J C Biological interface system with surrogate controlled device
US20060167564A1 (en) * 2005-01-10 2006-07-27 Flaherty J C Limb and digit movement system
WO2006078432A2 (en) * 2005-01-18 2006-07-27 Cyberkinetics Neurotechnology Systems, Inc. Biological interface system with automated configuration
US20070106143A1 (en) * 2005-11-08 2007-05-10 Flaherty J C Electrode arrays and related methods
WO2007078463A1 (en) 2005-12-22 2007-07-12 The Trustees Of Columbia University In The City Of New York Systems and methods for intravascular cooling
US20070156126A1 (en) * 2005-12-29 2007-07-05 Flaherty J C Medical device insertion system and related methods
US20100023021A1 (en) * 2005-12-27 2010-01-28 Flaherty J Christopher Biological Interface and Insertion
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US9770180B2 (en) * 2006-08-17 2017-09-26 Milan Radojicic System and method for monitoring and delivering therapeutics to the spinal cord
US20080045883A1 (en) * 2006-08-17 2008-02-21 Milan Radojicic Devices and methods for monitoring and delivering therapeutics to the spinal cord
CA2687330A1 (en) 2007-05-18 2008-11-27 The Johns Hopkins University A treatment simulator for brain diseases and method of use thereof
CN101896117B (en) 2007-10-12 2015-03-04 坦西斯医药股份有限公司 Apparatus and methods for non-invasively measuring a patient's arterial blood pressure
US20090112215A1 (en) * 2007-10-29 2009-04-30 Sherman Jason T Opto-electric indicators for orthopaedic instruments
US9463276B2 (en) 2008-08-16 2016-10-11 Milan Radojicic Systems and methods for a computational medical device in dynamic body systems
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US8313442B2 (en) 2009-10-21 2012-11-20 Codman & Shurtleff, Inc. Cerebral compliance monitoring
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US9510786B2 (en) 2011-06-22 2016-12-06 Biosense Webster (Israel) Ltd. Optical pressure measurement
AU2013292313B2 (en) * 2012-07-20 2017-04-20 Endophys Holdings, Llc Transducer interface system and method
EP3021740B1 (en) * 2013-07-18 2020-12-30 Endophys Holdings, LLC Blood pressure analysis system and method
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Also Published As

Publication number Publication date
JP3062661B2 (en) 2000-07-12
CA2077089C (en) 2001-08-14
EP0524188A1 (en) 1993-01-27
WO1991012767A1 (en) 1991-09-05
EP0524188B1 (en) 1996-03-20
DE69118177D1 (en) 1996-04-25
DE69118177T2 (en) 1996-11-28
US5325865A (en) 1994-07-05
JPH05506377A (en) 1993-09-22

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