CA2044159A1 - Integral intracranial pressure monitor and drainage catheter assembly - Google Patents

Integral intracranial pressure monitor and drainage catheter assembly

Info

Publication number
CA2044159A1
CA2044159A1 CA002044159A CA2044159A CA2044159A1 CA 2044159 A1 CA2044159 A1 CA 2044159A1 CA 002044159 A CA002044159 A CA 002044159A CA 2044159 A CA2044159 A CA 2044159A CA 2044159 A1 CA2044159 A1 CA 2044159A1
Authority
CA
Canada
Prior art keywords
catheter assembly
pressure
monitor
photodetector
lumen
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
CA002044159A
Other languages
French (fr)
Other versions
CA2044159C (en
Inventor
John P. Hall
Ronald B. Beckman
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
John P. Hall
Ronald B. Beckman
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 John P. Hall, Ronald B. Beckman, Baxter International Inc., Edwards Lifesciences Corporation filed Critical John P. Hall
Publication of CA2044159A1 publication Critical patent/CA2044159A1/en
Application granted granted Critical
Publication of CA2044159C publication Critical patent/CA2044159C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61B5/41—Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/412—Detecting or monitoring sepsis
    • 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
    • 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
    • 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
    • G01L9/0079—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light with Fabry-Perot arrangements
    • 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
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
    • A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
    • A61M27/006—Cerebrospinal drainage; Accessories therefor, e.g. valves

Abstract

A monitor-driven intracranial catheter assembly including a dual lumen catheter for monitoring intracranial pressure via a pressure sensor located in one lumen while simultaneously draining cerebrospinal fluid through the other lumen. The pressure sensor is preferably a spectral modulation sensor that communicates with a photodetector apparatus by means of a single optical fiber, thus minimizing the diameter of the catheter. The photodetector is self-correcting for signal errors caused by temperature change, changes in intensity of the input light, and transmission losses within the optical apparatus.
Moreover, the photodetector operates off the output voltage of the standard hospital monitor by "scaling" the signal from the monitor to provides a pressure measurement signal that emulates the output of a piezoresistive strain gauge sensor or Wheatstone bridge. Therefore, the entire catheter assembly is designed to be used with any of the common types of hospital monitors. The pressure monitoring catheter assembly can be used in any situation requiring very sensitive pressure measurements and can be zeroed and calibrated in situ.
CA002044159A 1989-10-11 1990-10-10 Integral intracranial pressure monitor and drainage catheter assembly Expired - Lifetime CA2044159C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US41993889A 1989-10-11 1989-10-11
US419,938 1989-10-11
PCT/US1990/005804 WO1991005575A1 (en) 1989-10-11 1990-10-10 Integral intracranial pressure monitor and drainage catheter assembly

Publications (2)

Publication Number Publication Date
CA2044159A1 true CA2044159A1 (en) 1991-04-12
CA2044159C CA2044159C (en) 2003-04-15

Family

ID=23664375

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002044159A Expired - Lifetime CA2044159C (en) 1989-10-11 1990-10-10 Integral intracranial pressure monitor and drainage catheter assembly

Country Status (6)

Country Link
US (2) US8066681B1 (en)
EP (1) EP0447545B1 (en)
JP (1) JP3134121B2 (en)
CA (1) CA2044159C (en)
DE (1) DE69007465T2 (en)
WO (1) WO1991005575A1 (en)

Families Citing this family (94)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2044159C (en) * 1989-10-11 2003-04-15 John P. Hall Integral intracranial pressure monitor and drainage catheter assembly
US5191898A (en) * 1990-10-22 1993-03-09 Millar Instruments, Inc. Method and assembly for measuring intracranial fluid characateristics
DE69124516T2 (en) * 1991-11-04 1998-04-23 Medtronic Inc catheter
EP0617913B1 (en) * 1993-03-26 2001-11-21 Edwards Lifesciences Corporation Intracranial pressure monitor and drainage catheter assembly
US5437284A (en) * 1993-12-30 1995-08-01 Camino Laboratories, Inc. System and method for in vivo calibration of a sensor
NL9401184A (en) * 1994-07-19 1996-03-01 Cordis Europ Suction catheter.
US5803909A (en) 1994-10-06 1998-09-08 Hitachi, Ltd. Optical system for measuring metabolism in a body and imaging method
NL1001528C2 (en) * 1995-10-30 1997-05-02 Cerato B V Dialysis device.
DE69820043T2 (en) * 1997-03-25 2004-08-26 Radi Medical Systems Ab DEVICE FOR MEASURING PRESSURE
US6248083B1 (en) 1997-03-25 2001-06-19 Radi Medical Systems Ab Device for pressure measurements
US5957912A (en) * 1998-04-16 1999-09-28 Camino Neurocare, Inc. Catheter having distal stylet opening and connector
US6251079B1 (en) * 1998-09-30 2001-06-26 C. R. Bard, Inc. Transthoracic drug delivery device
US6923799B1 (en) * 1999-06-04 2005-08-02 Wilson T. Asfora Subdural evacuating port system
US7553290B1 (en) 1999-06-04 2009-06-30 Medtronic Ps Medical, Inc. Subdural evacuating port aspiration system
SE514745C2 (en) * 1999-06-18 2001-04-09 Samba Sensors Ab Method and apparatus for bending compensation in intensity-based optical measurement systems
US20090027659A1 (en) * 1999-06-18 2009-01-29 Sambra Sensors Ab Measuring system for measuring a physical parameter influencing a sensor element
US6453185B1 (en) * 2000-03-17 2002-09-17 Integra Lifesciences, Inc. Ventricular catheter with reduced size connector and method of use
DE10040350A1 (en) * 2000-08-17 2002-03-07 Rehau Ag & Co catheter
DE10040164C2 (en) * 2000-08-17 2003-06-12 Rehau Ag & Co Drainage and irrigation catheter with pressure measuring device
US7547283B2 (en) * 2000-11-28 2009-06-16 Physiosonics, Inc. Methods for determining intracranial pressure non-invasively
US6609015B2 (en) * 2001-01-18 2003-08-19 Koninklijke Philips Electronics N.V. Analysis of a composition
CA2445404A1 (en) * 2001-04-25 2002-10-31 Mayo Foundation For Medical Education And Research Microsensor for physiological pressure measurement
US6606521B2 (en) 2001-07-09 2003-08-12 Neuropace, Inc. Implantable medical lead
AU2002313778A1 (en) * 2001-08-21 2003-03-03 Eunoe, Inc. Combined drug and csf removal therapies and systems
US6913589B2 (en) 2002-01-14 2005-07-05 Codman & Shurtleff, Inc. Multi-catheter insertion device and method
US6761695B2 (en) 2002-03-07 2004-07-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method and apparatus for non-invasive measurement of changes in intracranial pressure
US6746410B2 (en) 2002-04-04 2004-06-08 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method and apparatus for determining changes in intracranial pressure utilizing measurement of the circumferential expansion or contraction of a patient's skull
US6740048B2 (en) 2002-04-08 2004-05-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Non-invasive method of determining diastolic intracranial pressure
US6773407B2 (en) 2002-04-08 2004-08-10 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Non-invasive method of determining absolute intracranial pressure
US7621879B2 (en) * 2002-05-14 2009-11-24 Pacesetter, Inc. System for calibrating implanted sensors
US7862513B2 (en) * 2002-05-14 2011-01-04 Pacesetter, Inc. Apparatus for minimally invasive calibration of implanted pressure transducers
US6957098B1 (en) * 2002-06-27 2005-10-18 Advanced Cardiovascular Systems, Inc. Markers for interventional devices in magnetic resonant image (MRI) systems
US8303511B2 (en) * 2002-09-26 2012-11-06 Pacesetter, Inc. Implantable pressure transducer system optimized for reduced thrombosis effect
EP1549394B1 (en) * 2002-09-26 2011-12-07 Pacesetter, Inc. Cardiovascular anchoring device
US20040102761A1 (en) * 2002-11-27 2004-05-27 Ahmed A. Mateen Portable pressure relief system & methods
EP1589866A2 (en) * 2003-01-09 2005-11-02 The Regents of the University of California Implantable devices and methods for measuring intraocular, subconjunctival or subdermal pressure and/or analyte concentration
US7322971B2 (en) * 2003-02-07 2008-01-29 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California Surgical drain with sensors for monitoring internal tissue condition by transmittance
US7963956B2 (en) * 2003-04-22 2011-06-21 Antisense Pharma Gmbh Portable equipment for administration of fluids into tissues and tumors by convection enhanced delivery technique
US7241283B2 (en) 2003-04-25 2007-07-10 Ad-Tech Medical Instrument Corp. Method for intracranial catheter treatment of brain tissue
JP2005037314A (en) * 2003-07-18 2005-02-10 Myotoku Ltd Optical interference pressure sensor
US20050043669A1 (en) * 2003-08-18 2005-02-24 Codman & Shurtleff, Inc. Trimmable sensing catheter
US7520862B2 (en) * 2004-02-03 2009-04-21 Neuro Diagnostic Devices, Inc. Cerebral spinal fluid shunt evaluation system
US20080214951A1 (en) * 2004-02-03 2008-09-04 Neuro Diagnostic Devices, Inc. Cerebrospinal Fluid Evaluation Systems
US8057401B2 (en) * 2005-02-24 2011-11-15 Erich Wolf System for transcutaneous monitoring of intracranial pressure
US7585280B2 (en) 2004-12-29 2009-09-08 Codman & Shurtleff, Inc. System and method for measuring the pressure of a fluid system within a patient
JP2008531186A (en) * 2005-02-28 2008-08-14 リクヴォール アーベー Method and apparatus for determining fluidity of cerebrospinal system
US8182433B2 (en) * 2005-03-04 2012-05-22 Endosense Sa Medical apparatus system having optical fiber load sensing capability
US8075498B2 (en) 2005-03-04 2011-12-13 Endosense Sa Medical apparatus system having optical fiber load sensing capability
ES2432560T3 (en) * 2005-03-10 2013-12-04 Anatoly Babchenko Optical sensor
US10362947B2 (en) 2005-03-15 2019-07-30 Integra LifeSciences Switzerland Sarl Pressure sensing devices
AU2006200951B2 (en) * 2005-03-13 2012-01-19 Integra LifeSciences Switzerland Sarl Pressure sensing devices
US7510533B2 (en) 2005-03-15 2009-03-31 Codman & Shurtleff, Inc. Pressure sensing valve
AU2012200359B2 (en) * 2005-03-13 2013-09-19 Integra LifeSciences Switzerland Sarl Pressure sensing devices
EP3028645B1 (en) 2005-08-01 2019-09-18 St. Jude Medical International Holding S.à r.l. Medical apparatus system having optical fiber load sensing capability
US7753902B1 (en) * 2005-11-17 2010-07-13 Hebah Noshy Mansour Methods and devices for tissue monitoring
US8048063B2 (en) 2006-06-09 2011-11-01 Endosense Sa Catheter having tri-axial force sensor
US8567265B2 (en) 2006-06-09 2013-10-29 Endosense, SA Triaxial fiber optic force sensing catheter
US20070296125A1 (en) * 2006-06-22 2007-12-27 Joel Colburn Thin cuff for use with medical tubing and method and apparatus for making the same
US8157789B2 (en) * 2007-05-24 2012-04-17 Endosense Sa Touch sensing catheter
US8622935B1 (en) 2007-05-25 2014-01-07 Endosense Sa Elongated surgical manipulator with body position and distal force sensing
US8147480B2 (en) * 2007-09-28 2012-04-03 Codman & Shurtleff, Inc. Catheter for reduced reflux in targeted tissue delivery of a therapeutic agent
US7766875B2 (en) * 2007-09-28 2010-08-03 Codman & Shurtleff, Inc. Catheter for reduced reflux in targeted tissue delivery of a therapeutic agent
US8454524B2 (en) 2007-10-31 2013-06-04 DePuy Synthes Products, LLC Wireless flow sensor
US8480612B2 (en) 2007-10-31 2013-07-09 DePuy Synthes Products, LLC Wireless shunts with storage
US9204812B2 (en) 2007-10-31 2015-12-08 DePuy Synthes Products, LLC Wireless pressure sensing shunts
US8298227B2 (en) * 2008-05-14 2012-10-30 Endosense Sa Temperature compensated strain sensing catheter
US9079028B2 (en) 2008-10-09 2015-07-14 Virender K. Sharma Method and apparatus for stimulating the vascular system
US10603489B2 (en) 2008-10-09 2020-03-31 Virender K. Sharma Methods and apparatuses for stimulating blood vessels in order to control, treat, and/or prevent a hemorrhage
WO2011053766A1 (en) * 2009-10-30 2011-05-05 Advanced Bionics, Llc Steerable stylet
US8478384B2 (en) * 2010-01-19 2013-07-02 Lightlab Imaging, Inc. Intravascular optical coherence tomography system with pressure monitoring interface and accessories
CN103002940B (en) 2010-03-19 2018-09-14 华盛顿大学 drainage system for excess body fluid
WO2012099984A1 (en) * 2011-01-18 2012-07-26 Innerspace, Inc. Stylet that senses csf
CN103607961B (en) 2011-04-14 2016-12-14 圣犹达医疗用品卢森堡控股有限公司 Compact force sensor for conduit
CN102205162B (en) * 2011-06-17 2013-04-10 南京航空航天大学 Drain tube for intracranial pressure monitoring
CA2882734C (en) 2012-07-20 2019-02-05 Endophys Holdings, Llc Transducer interface system and method
US9072864B2 (en) 2012-11-28 2015-07-07 Ad-Tech Medical Instrument Corporation Catheter with depth electrode for dual-purpose use
DE102013210349A1 (en) * 2013-06-04 2014-12-04 Conti Temic Microelectronic Gmbh Optical pressure measuring device and optical pressure measuring method
WO2015010064A1 (en) * 2013-07-18 2015-01-22 Board Of Regents Of The University Of Texas System Blood pressure analysis system and method
WO2015105916A1 (en) * 2014-01-07 2015-07-16 Consano, Inc. Systems, devices and methods for draining and analyzing bodily fluids
AU2015206267B2 (en) 2014-01-16 2018-02-01 Aqueduct Neurosciences, Inc. Pressure reference assemblies for body fluid drainage systems and associated methods
CA2943599C (en) 2014-03-24 2022-01-25 Chad Eric SEAVER An implantable dual sensor bio-pressure transponder and method of calibration
US20170014554A1 (en) * 2015-07-15 2017-01-19 H. George Brennan System and method for aspirating bodily fluid
US9498300B1 (en) * 2015-07-30 2016-11-22 Novartis Ag Communication system for surgical devices
US11445937B2 (en) 2016-01-07 2022-09-20 St. Jude Medical International Holding S.À R.L. Medical device with multi-core fiber for optical sensing
TWI653031B (en) * 2016-03-28 2019-03-11 鉅旺生技股份有限公司 Wireless pressure sensor
WO2018038930A1 (en) * 2016-08-24 2018-03-01 Cedars-Sinai Medical Center Device for brain electrical monitoring with or without combined brain fluid drainage
EP3541278A4 (en) * 2016-11-18 2020-06-03 Auckland Uniservices Limited Pressure sensor
WO2019173313A1 (en) 2018-03-06 2019-09-12 Medtronic Vascular, Inc. Rapid exchange balloon catheter
AU2019310039A1 (en) 2018-07-23 2021-02-18 Enclear Therapies, Inc. Methods of treating neurological disorders
CA3107352A1 (en) 2018-07-23 2020-01-30 Enclear Therapies, Inc. Methods of treating neurological disorders
KR20220011123A (en) 2019-04-11 2022-01-27 엔클리어 테라피스, 인크. Cerebrospinal fluid improvement method and device and system therefor
DE102019123527A1 (en) * 2019-08-22 2021-02-25 Fresenius Medical Care AG & Co. KGaA Determination of a hose pressure by means of laser interferometry and a device therefor
WO2022020314A1 (en) * 2020-07-20 2022-01-27 Cerebral Therapeutics, Inc. Fluid catheter device for recording brain state
CN117330234B (en) * 2023-11-28 2024-03-15 微智医疗器械有限公司 Pressure sensor assembly manufacturing method and pressure sensor assembly

Family Cites Families (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603210A (en) * 1952-07-15 Collapsible liquid column
US2118637A (en) * 1936-03-05 1938-05-24 Gen Electric Evaporator for refrigerating machines
US2458305A (en) * 1947-04-26 1949-01-04 Richard D Sanders Tubular article comprising rubberlike material
US3225762A (en) 1963-10-25 1965-12-28 Yolan R Guttman Intravenous stylet catheter
US3353410A (en) 1965-07-27 1967-11-21 Hewlett Packard Co Overload stop for pressure transducer
US3421510A (en) * 1966-01-10 1969-01-14 Edward L Kettenbach Drain having shielded suction tube
US3503116A (en) 1967-10-09 1970-03-31 Bendix Corp Method of fabricating a pressure transducer
US3714829A (en) 1970-06-29 1973-02-06 Beckman Instruments Inc Pressure measuring system
DE2703274C3 (en) * 1977-01-27 1982-01-21 Richard Wolf Gmbh, 7134 Knittlingen Endoscope, in particular resectoscope
US4168703A (en) * 1977-07-18 1979-09-25 Kenneth Kenigsberg Gastroesophageal reflux diagnostic tool
US4588395A (en) 1978-03-10 1986-05-13 Lemelson Jerome H Catheter and method
US4329058A (en) 1979-01-22 1982-05-11 Rockwell International Corporation Method and apparatus for a Fabry-Perot multiple beam fringe sensor
US4803992A (en) 1980-10-28 1989-02-14 Lemelson Jerome H Electro-optical instruments and methods for producing same
US4578061A (en) 1980-10-28 1986-03-25 Lemelson Jerome H Injection catheter and method
US4351342A (en) * 1981-06-10 1982-09-28 Wiita Bruce E Balloon catheter
DE3127882A1 (en) * 1981-07-15 1983-02-03 Jean Richard Dr. 3000 Hannover Moringlane Measurement and recording device for studying and treating hydrocephalus and for monitoring during external drainage of cerebrospinal fluid
US4423725A (en) * 1982-03-31 1984-01-03 Baran Ostap E Multiple surgical cuff
US4446715A (en) 1982-06-07 1984-05-08 Camino Laboratories, Inc. Transducer calibration system
ATE58790T1 (en) 1983-05-25 1990-12-15 Camino Lab Inc FIBEROPTIC TRANSDUCER.
US4611600A (en) 1983-11-21 1986-09-16 Cordis Corporation Optical fiber pressure transducer
US4703174A (en) 1984-03-02 1987-10-27 Fiberdynamics, Inc. Fiberoptic temperature/pressure sensor system
AU4064085A (en) 1984-03-08 1985-09-24 Optical Technologies, Inc. Fluid flow sensing apparatus for in vivo and industrial applications employing novel differential optical fiber pressure sensors
US4678904A (en) * 1984-07-06 1987-07-07 Technology Dynamics, Inc. Optical measuring device using a spectral modulation sensor having an optically resonant structure
US4578057A (en) * 1984-08-31 1986-03-25 Cordis Corporation Ventricular right angle connector and system
US4703757A (en) 1984-11-16 1987-11-03 Cordis Corporation Optical fiber pressure transducer
DE3443337A1 (en) * 1984-11-28 1986-05-28 Richard Wolf Gmbh, 7134 Knittlingen INSTRUMENT FOR THE EXAMINATION AND TREATMENT OF BODY CHANNELS
US4632668A (en) * 1984-12-31 1986-12-30 University Of Virginia Alumni Patents Foundation Ventricular catheter
SE441725B (en) 1985-01-10 1985-11-04 Bertil Hok SYSTEMS FOR PHYSIOLOGICAL PRESSURE RECORDS
FR2579092B1 (en) 1985-03-22 1989-06-16 Univ Toulouse IMPLANTABLE INTRACRANIAL PRESSURE SENSOR
JPS61235731A (en) 1985-04-11 1986-10-21 Sharp Corp Pressure sensing element
US4672974A (en) 1985-06-14 1987-06-16 Lee Arnold St J Method and apparatus for "zeroing" and calibrating a catheter-tip gauge-pressure transducer
NL8502543A (en) 1985-09-17 1987-04-16 Sentron V O F ELECTRONIC PRESSURE SENSITIVE ELEMENT MADE OF SEMICONDUCTOR MATERIAL.
US4705047A (en) 1985-09-30 1987-11-10 Camino Laboratories, Inc. Output circuit for physiological measuring instruments
US4658829A (en) 1985-10-10 1987-04-21 Utah Medical Products, Inc. Method and apparatus for pressure transducer calibration and simulation
US4705499A (en) 1985-12-23 1987-11-10 Cordis Corporation Implantable servo valve having integral pressure sensor
US4739771A (en) 1986-02-20 1988-04-26 Kim Manwaring Thermal method and apparatus for measuring organ blood perfusion
US4799474A (en) * 1986-03-13 1989-01-24 Olympus Optical Co., Ltd. Medical tube to be inserted in body cavity
US4723556A (en) 1986-04-14 1988-02-09 Cordis Corporation Intracranial ventricular catheter assembly
ATE110552T1 (en) 1986-06-09 1994-09-15 Univ California GALLSTONES REMOVAL DEVICE.
US4730622A (en) 1986-07-01 1988-03-15 Cordis Corporation Pressure and oxygen saturation catheter
US4735212A (en) 1986-07-01 1988-04-05 Cordis Corporation Multiple site fiber optic pressure transducer
US4713049A (en) * 1986-08-05 1987-12-15 Medical Engineering Corporation Ureteral stent kit
US4800749A (en) 1986-08-15 1989-01-31 Hewlett-Packard Company Transducer calibration circuit
US4711246A (en) 1986-09-02 1987-12-08 Fiberoptic Sensor Technologies, Inc. Fiber optic coupled pressure transducer using single fiber and method of fabrication
US5046497A (en) * 1986-11-14 1991-09-10 Millar Instruments, Inc. Structure for coupling a guidewire and a catheter
US4873986A (en) * 1987-04-01 1989-10-17 Utah Medical Products Disposable apparatus for monitoring intrauterine pressure and fetal heart rate
US4815472A (en) 1987-06-01 1989-03-28 The Regents Of The University Of Michigan Multipoint pressure-sensing catheter system
GB2205244B (en) * 1987-06-01 1991-04-03 Blagoveshchensk G Med Inst Device for cleansing the colon
US4787396A (en) 1987-06-18 1988-11-29 Fiberoptic Sensor Technologies, Inc. Fiberoptic pressure transducer
US4796641A (en) 1987-07-06 1989-01-10 Data Sciences, Inc. Device and method for chronic in-vivo measurement of internal body pressure
US4950232A (en) * 1987-08-11 1990-08-21 Surelab Superior Research Laboratories Cerebrospinal fluid shunt system
US4815471A (en) 1988-08-01 1989-03-28 Precision Interconnect Corporation Catheter assembly
US5078688A (en) * 1989-09-22 1992-01-07 Baxter International Inc. Paracentesis catheter system
CA2044159C (en) * 1989-10-11 2003-04-15 John P. Hall Integral intracranial pressure monitor and drainage catheter assembly
US5242389A (en) * 1990-07-19 1993-09-07 Sherwood Medical Company Enteral feeding tube enteral feeding tube with separate stylet lumen
US5197457A (en) * 1990-09-12 1993-03-30 Adair Edwin Lloyd Deformable and removable sheath for optical catheter
US5191898A (en) * 1990-10-22 1993-03-09 Millar Instruments, Inc. Method and assembly for measuring intracranial fluid characateristics
US5117836A (en) * 1990-10-22 1992-06-02 Millar Instruments, Inc. Method for measuring intracranial fluid characteristics
DE69124516T2 (en) * 1991-11-04 1998-04-23 Medtronic Inc catheter

Also Published As

Publication number Publication date
US6210346B1 (en) 2001-04-03
DE69007465T2 (en) 1994-10-20
CA2044159C (en) 2003-04-15
DE69007465D1 (en) 1994-04-21
JPH04502118A (en) 1992-04-16
WO1991005575A1 (en) 1991-05-02
EP0447545B1 (en) 1994-03-16
JP3134121B2 (en) 2001-02-13
EP0447545A1 (en) 1991-09-25
US8066681B1 (en) 2011-11-29

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