CA2110716A1 - Optical cerebral oximeter - Google Patents

Optical cerebral oximeter

Info

Publication number
CA2110716A1
CA2110716A1 CA002110716A CA2110716A CA2110716A1 CA 2110716 A1 CA2110716 A1 CA 2110716A1 CA 002110716 A CA002110716 A CA 002110716A CA 2110716 A CA2110716 A CA 2110716A CA 2110716 A1 CA2110716 A1 CA 2110716A1
Authority
CA
Canada
Prior art keywords
brain
patient
computer
volume
supply
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
CA002110716A
Other languages
French (fr)
Other versions
CA2110716C (en
Inventor
Gary D. Lewis
Wayne P. Messing
Melville C. Stewart
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.)
Somanetics LLC
Original Assignee
Gary D. Lewis
Wayne P. Messing
Melville C. Stewart
Somanetics 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 D. Lewis, Wayne P. Messing, Melville C. Stewart, Somanetics Corporation filed Critical Gary D. Lewis
Publication of CA2110716A1 publication Critical patent/CA2110716A1/en
Application granted granted Critical
Publication of CA2110716C publication Critical patent/CA2110716C/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
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
    • A61B5/14552—Details of sensors specially adapted therefor
    • 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
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A61B5/02427—Details of sensor
    • A61B5/02433—Details of sensor for infrared radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
    • A61B5/14553—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases specially adapted for cerebral tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/40—Detecting, measuring or recording for evaluating the nervous system
    • A61B5/4058—Detecting, measuring or recording for evaluating the nervous system for evaluating the central nervous system
    • A61B5/4064—Evaluating the brain

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Cardiology (AREA)
  • Physiology (AREA)
  • Neurology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

A cerebral oximeter for use with a sensor unit (12) applied to the fore-head of a patient, or other such selected cranial area, whihe emits selected wave-lengths of electromagnetic radiation (e.g. light in the near infrared range) that passes through a selected volume of brain tissue in-side the patient's skull. The emitted wavelengths are se-lectively absorbed by the blood within the irradiated brain tissues, present in ar-terial, venous, capillary, and/or other supply, and the resulting radiation is detected and analyzed by a computer (20) to determine the hemoglobin oxygen sat-uration of the composite blood supply within the se-lected volume of brain tis-sue, with readout provided as a quantified particular value (e.g., a number representing the instantaneous value measured), and/
or also in graphical or other time-representative display, as far example on the CRT monitor (22) of the computer, with attendant storage of digital values for record purposes or other subsequent use.
CA002110716A 1991-06-06 1992-06-04 Optical cerebral oximeter Expired - Lifetime CA2110716C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US71114791A 1991-06-06 1991-06-06
US711,147 1991-06-06
PCT/US1992/004654 WO1992021283A1 (en) 1991-06-06 1992-06-04 Optical cerebral oximeter

Publications (2)

Publication Number Publication Date
CA2110716A1 true CA2110716A1 (en) 1992-12-10
CA2110716C CA2110716C (en) 2003-10-28

Family

ID=24856954

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002110716A Expired - Lifetime CA2110716C (en) 1991-06-06 1992-06-04 Optical cerebral oximeter

Country Status (4)

Country Link
EP (1) EP0597875A4 (en)
JP (1) JPH07500259A (en)
CA (1) CA2110716C (en)
WO (1) WO1992021283A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3577335B2 (en) * 1993-06-02 2004-10-13 浜松ホトニクス株式会社 Scattering absorber measurement method and device
JP3433498B2 (en) * 1993-06-02 2003-08-04 浜松ホトニクス株式会社 Method and apparatus for measuring internal information of scattering medium
US5421329A (en) * 1994-04-01 1995-06-06 Nellcor, Inc. Pulse oximeter sensor optimized for low saturation
US6662033B2 (en) 1994-04-01 2003-12-09 Nellcor Incorporated Pulse oximeter and sensor optimized for low saturation
JP3562847B2 (en) * 1994-11-15 2004-09-08 謙 石原 Hemoglobin concentration measuring device
US5524617A (en) * 1995-03-14 1996-06-11 Nellcor, Incorporated Isolated layer pulse oximetry
IT1277391B1 (en) * 1995-07-28 1997-11-10 Romano Deghenghi CYCLIC PEPTIDES ANALOGUE OF SOMATOSTATIN TO ACTIVITY INHIBITING THE GROWTH HORMONE
AU719852B2 (en) * 1996-01-04 2000-05-18 Larkace Pty Ltd Bioenergetic data collection apparatus
AUPN740796A0 (en) * 1996-01-04 1996-01-25 Circuitry Systems Limited Biomedical data collection apparatus
EP1094745B1 (en) 1998-07-04 2010-05-19 Whitland Research Limited Non-invasive measurement of blood analytes
US6842635B1 (en) * 1998-08-13 2005-01-11 Edwards Lifesciences Llc Optical device
USRE45608E1 (en) 1998-10-13 2015-07-14 Covidien Lp Multi-channel non-invasive tissue oximeter
US7319894B2 (en) 2005-09-13 2008-01-15 Edwards Lifesciences Corporation Continuous spectroscopic measurement of total hemoglobin
JP5443075B2 (en) * 2009-06-30 2014-03-19 株式会社日立製作所 Game system, biological light measurement device
JP5822444B2 (en) * 2010-07-29 2015-11-24 株式会社島津製作所 Light measuring device
JP2013544588A (en) 2010-11-03 2013-12-19 ユニバーシティ オブ ワシントン スルー イッツ センター フォー コマーシャライゼーション Determination of tissue oxygenation in vivo
JP5238087B1 (en) 2012-02-20 2013-07-17 浜松ホトニクス株式会社 Concentration measuring device and concentration measuring method
JP6006668B2 (en) * 2013-03-29 2016-10-12 浜松ホトニクス株式会社 Concentration measuring device and concentration measuring method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281645A (en) * 1977-06-28 1981-08-04 Duke University, Inc. Method and apparatus for monitoring metabolism in body organs
US4907876A (en) * 1987-05-08 1990-03-13 Hamamatsu Photonics Kabushiki Kaisha Examination apparatus for measuring oxygenation in body organs
US4807631A (en) * 1987-10-09 1989-02-28 Critikon, Inc. Pulse oximetry system

Also Published As

Publication number Publication date
EP0597875A1 (en) 1994-05-25
WO1992021283A1 (en) 1992-12-10
EP0597875A4 (en) 1995-02-08
JPH07500259A (en) 1995-01-12
CA2110716C (en) 2003-10-28

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