ATE101506T1 - Tragbares unabhaengiges elektronisches ionometer. - Google Patents

Tragbares unabhaengiges elektronisches ionometer.

Info

Publication number
ATE101506T1
ATE101506T1 AT86307393T AT86307393T ATE101506T1 AT E101506 T1 ATE101506 T1 AT E101506T1 AT 86307393 T AT86307393 T AT 86307393T AT 86307393 T AT86307393 T AT 86307393T AT E101506 T1 ATE101506 T1 AT E101506T1
Authority
AT
Austria
Prior art keywords
equalizing
microprocessor
inputs
transducer
baseline
Prior art date
Application number
AT86307393T
Other languages
English (en)
Inventor
Steven Feldon
Gary Mezack
David Wallace
Robert Monsour
Original Assignee
Mentor O & O 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 Mentor O & O Inc filed Critical Mentor O & O Inc
Application granted granted Critical
Publication of ATE101506T1 publication Critical patent/ATE101506T1/de

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/16—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring intraocular pressure, e.g. tonometers

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
AT86307393T 1985-09-27 1986-09-25 Tragbares unabhaengiges elektronisches ionometer. ATE101506T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/781,240 US4747296A (en) 1985-09-27 1985-09-27 Electronic tonometer with baseline nulling system
EP86307393A EP0217642B1 (de) 1985-09-27 1986-09-25 Tragbares unabhängiges elektronisches Ionometer

Publications (1)

Publication Number Publication Date
ATE101506T1 true ATE101506T1 (de) 1994-03-15

Family

ID=25122117

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86307393T ATE101506T1 (de) 1985-09-27 1986-09-25 Tragbares unabhaengiges elektronisches ionometer.

Country Status (5)

Country Link
US (1) US4747296A (de)
EP (1) EP0217642B1 (de)
JP (1) JPH08107B2 (de)
AT (1) ATE101506T1 (de)
DE (1) DE3689643T2 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU1755427C (ru) * 1986-02-25 1995-01-20 Козин Михаил Петрович Глазной тонометр
JPH0199528A (ja) * 1987-10-13 1989-04-18 Topcon Corp エアパフ型眼圧計
US4926674A (en) * 1988-11-03 1990-05-22 Innovex Inc. Self-zeroing pressure signal generator
US5116051A (en) * 1989-01-12 1992-05-26 Atari Games Corporation Strain gauge pressure-sensitive video game control
US4987898A (en) * 1989-01-17 1991-01-29 Noninvasive Medical Incorporated Method and device for the non-invasive measurement of pressure
EP0473896A3 (en) * 1990-09-01 1993-10-06 S+G Schmitt Messgeraetebau Gmbh Device for measuring exhaust gases from heating installations
US5142921A (en) * 1990-10-29 1992-09-01 Litton Systems, Inc. Force balance instrument with electrostatic charge control
US5810005A (en) 1993-08-04 1998-09-22 Dublin, Jr.; Wilbur L. Apparatus and method for monitoring intraocular and blood pressure by non-contact contour measurement
DE4444459C1 (de) * 1994-12-14 1996-02-29 Jenoptik Technologie Gmbh Anordnung zur automatischen Bestimmung der Andruckkraft bei Augendruckuntersuchungen
US6113542A (en) * 1998-12-15 2000-09-05 Hyman; George F. Diagnostic apparatus and method to provide effective intraocular pressure based on measured thickness of the cornea
US6361495B1 (en) 2000-02-07 2002-03-26 Leica Microsystems Inc. Hand-held non-contact tonometer
US6524243B1 (en) * 2000-10-04 2003-02-25 Jordan Technology Inc. Tonometer incorporating an electrical measurement device
US6776756B2 (en) * 2001-05-16 2004-08-17 Marco Ophthalmic, Inc. Applanation tonometer
US6565585B2 (en) 2001-06-22 2003-05-20 Nidek Co., Ltd. Corneal surgical apparatus
RU2212033C2 (ru) * 2001-06-25 2003-09-10 Всероссийский центр медицины катастроф "Защита" Устройство для определения компрессионных свойств изделий из упругоэластичных материалов
JP4615772B2 (ja) * 2001-07-12 2011-01-19 株式会社ニデック 角膜手術装置
US6673014B2 (en) 2001-10-05 2004-01-06 Itonix, Inc. Noninvasive methods and apparatuses for measuring the intraocular pressure of a mammal eye
US6623429B2 (en) 2001-11-06 2003-09-23 Reichert, Inc. Hand-held non-contact tonometer
US6923765B2 (en) 2001-11-21 2005-08-02 A. Mateen Ahmed Tonometer and method of use
EP1374758B1 (de) * 2002-06-27 2004-03-10 SIS AG Surgical Instrument Systems Vorrichtung zur Erfassung von Messwerten an einem Auge
US20040193033A1 (en) * 2002-10-04 2004-09-30 Badehi Avner Pierre Noninvasive methods and apparatuses for measuring the intraocular pressure of a mammal eye
US20060217611A1 (en) * 2003-06-03 2006-09-28 Autotonometer Corporation Ophthalmologic Applanation Prism Replacement System for Eye Examining Instrument
DE102004019955A1 (de) * 2004-01-12 2005-11-17 Emil Hohl Verfahren und Vorrichtung zum Messen des Innendruckes eines elastischen Prüfkörpers, insbesondere zum Messen des Augeninnendruckes
US20050182312A1 (en) * 2004-02-12 2005-08-18 Medtronic Xomed, Inc. Contact tonometer using MEMS technology
US20070123768A1 (en) * 2005-11-30 2007-05-31 Duke University Ophthalmic instruments, systems and methods especially adapted for conducting simultaneous tonometry and pachymetry measurements
WO2009100439A2 (en) * 2008-02-07 2009-08-13 Ehrecke Timothy J Pressure monitor
US9005125B1 (en) * 2010-02-04 2015-04-14 A. Mateen Ahmed Tonometer
US12295656B2 (en) * 2016-02-25 2025-05-13 Ocuflow, Inc. Composite ocular blood flow analyzer

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GB976959A (en) * 1963-07-19 1964-12-02 Standard Telephones Cables Ltd Electrical switching arrangement
US3266288A (en) * 1964-04-30 1966-08-16 Intercontinental Dynamics Corp Automatic pressure generating and regulating system
US3475600A (en) * 1966-02-28 1969-10-28 Infotronics Corp Base line control circuit means
FR1549197A (de) * 1967-03-13 1968-12-13
US3564907A (en) * 1967-11-17 1971-02-23 Univ Johns Hopkins Applanation tonometer
US3580243A (en) * 1968-10-21 1971-05-25 Marquette Electronics Inc Means and method for subtracting dc noise from electrocardiographic signals
FR2044451A5 (de) * 1969-05-21 1971-02-19 Sercel Rech Const Elect
US3641444A (en) * 1970-09-01 1972-02-08 Atomic Energy Commission Baseline compensating integrator
US3724263A (en) 1970-09-29 1973-04-03 Bio Optronics Inc Electrical digital display tonometer
FR2138234A1 (de) * 1971-05-19 1972-09-22 Commissariat Energie Atomique
US3781869A (en) * 1972-03-20 1973-12-25 Inservco Inc Transducer amplifier with automatic balance
US3884079A (en) * 1973-01-15 1975-05-20 Gen Signal Corp Force balance differential pressure transmitter
US4088009A (en) * 1973-06-09 1978-05-09 Akira Fukuda Air micrometer
US3889518A (en) * 1973-12-26 1975-06-17 American Optical Corp Device for consistent response to a fluid pulse and method and apparatus for verifying instruments utilizing fluid pulses
US3924612A (en) * 1974-01-28 1975-12-09 Philip T Dempster Spirometer apparatus and method
US3926056A (en) * 1974-09-26 1975-12-16 Us Navy Conductivity, temperature and pressure measuring system
JPS5236077A (en) * 1975-09-17 1977-03-19 Kosei Seisakusho:Kk Zero point correction device for sensors of pressure measuring apparat us of injection molding machines
US4003370A (en) * 1975-10-14 1977-01-18 American Hospital Supply Corporation Blood pressure monitor system and method
US4086804A (en) * 1976-10-26 1978-05-02 Sperry Rand Corporation Precision pneumatic pressure supply system
US4263918A (en) * 1977-03-21 1981-04-28 Biomega Corporation Methods of and apparatus for the measurement of blood pressure
US4192317A (en) * 1978-06-30 1980-03-11 Ical, Incorporated Indentation tonometer
JPS6046661B2 (ja) * 1978-09-26 1985-10-17 株式会社東芝 圧力変換器
JPS55135724A (en) * 1979-04-10 1980-10-22 Hitachi Ltd Pressure sensor
US4213348A (en) * 1979-08-01 1980-07-22 Medasonics, Inc. Self-calibrating automatic zeroing strain gauge circuit
US4322977A (en) * 1980-05-27 1982-04-06 The Bendix Corporation Pressure measuring system
JPS57113515U (de) * 1980-12-29 1982-07-14
US4532809A (en) * 1981-10-05 1985-08-06 Allied Corporation Pressure measuring systems with increased accuracy for a constant resolution
FR2550083B1 (fr) * 1983-08-03 1985-11-29 Berger Henri Appareil et procede pour mesurer la tension arterielle suivant une methode indirecte
US4817432A (en) 1985-09-27 1989-04-04 Design Team Partners Digital ultrasonic instrument for ophthalmic use

Also Published As

Publication number Publication date
EP0217642A2 (de) 1987-04-08
DE3689643D1 (de) 1994-03-24
JPH08107B2 (ja) 1996-01-10
EP0217642A3 (en) 1988-06-01
EP0217642B1 (de) 1994-02-16
DE3689643T2 (de) 1994-05-19
US4747296A (en) 1988-05-31
JPS62122632A (ja) 1987-06-03

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties