CA2066088A1 - Sensor for intrauterine use - Google Patents

Sensor for intrauterine use

Info

Publication number
CA2066088A1
CA2066088A1 CA002066088A CA2066088A CA2066088A1 CA 2066088 A1 CA2066088 A1 CA 2066088A1 CA 002066088 A CA002066088 A CA 002066088A CA 2066088 A CA2066088 A CA 2066088A CA 2066088 A1 CA2066088 A1 CA 2066088A1
Authority
CA
Canada
Prior art keywords
sensor
fetus
beyond
active face
skin
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
CA002066088A
Other languages
French (fr)
Other versions
CA2066088C (en
Inventor
Christopher Chung
Eric Johansson
Carl Ritson
Paul D. Mannheimer
Helen M. Mcnamara
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.)
Nellcor Inc
Original Assignee
Christopher Chung
Eric Johansson
Carl Ritson
Paul D. Mannheimer
Helen M. Mcnamara
Nellcor Incorporated
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
Priority claimed from US07/685,414 external-priority patent/US5218962A/en
Application filed by Christopher Chung, Eric Johansson, Carl Ritson, Paul D. Mannheimer, Helen M. Mcnamara, Nellcor Incorporated filed Critical Christopher Chung
Publication of CA2066088A1 publication Critical patent/CA2066088A1/en
Application granted granted Critical
Publication of CA2066088C publication Critical patent/CA2066088C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61B5/1464—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 specially adapted for foetal tissue
    • 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
    • A61B5/14542—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 for measuring blood gases
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852—Catheters
    • A61B5/6853—Catheters with a balloon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6885—Monitoring or controlling sensor contact pressure

Abstract

A sensor placement and retention mechanism for use with fetal sensor sites beyond the uses reach are disclosed. The preferred embodiment of this invention is a fetal pulse oximetry sensor having an active face through which a light source and a light detector operate. The sensor includes a handle that facilitates placement of the active face at a sensor site in a preferred region beyond the transcervical region and beyond the reach of the user. A pair of electrodes--one disposed against the fetus' skin and one exposed to the amniotic fluid--are used to confirm that the sensor is firmly in place on the fetus. In an optional sensor retention feature, a self-inflating bladder presses the active face of the sensor against the fetus' skin to optically couple the sensor with the tissue at the sensor site.
CA002066088A 1991-04-15 1992-04-15 Sensor for intrauterine use Expired - Fee Related CA2066088C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US07/685,414 US5218962A (en) 1991-04-15 1991-04-15 Multiple region pulse oximetry probe and oximeter
US07/685,414 1991-04-16
US69910491A 1991-05-13 1991-05-13
US07/699,104 1991-05-13
US07/775,315 US5247932A (en) 1991-04-15 1991-10-11 Sensor for intrauterine use
US07/775,315 1991-10-11

Publications (2)

Publication Number Publication Date
CA2066088A1 true CA2066088A1 (en) 1992-10-16
CA2066088C CA2066088C (en) 2003-06-17

Family

ID=27418457

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002066088A Expired - Fee Related CA2066088C (en) 1991-04-15 1992-04-15 Sensor for intrauterine use

Country Status (7)

Country Link
US (1) US5247932A (en)
EP (1) EP0509310B1 (en)
JP (2) JP3390186B2 (en)
AU (1) AU652437B2 (en)
CA (1) CA2066088C (en)
DE (1) DE69226301T2 (en)
FI (1) FI921594A (en)

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AU652437B2 (en) 1994-08-25
JP2001161666A (en) 2001-06-19
EP0509310B1 (en) 1998-07-22
FI921594A0 (en) 1992-04-10
US5247932A (en) 1993-09-28
JPH05115469A (en) 1993-05-14
DE69226301D1 (en) 1998-08-27
AU1485492A (en) 1992-10-22
EP0509310A2 (en) 1992-10-21
DE69226301T2 (en) 1999-04-22
EP0509310A3 (en) 1993-12-15
JP3492995B2 (en) 2004-02-03
JP3390186B2 (en) 2003-03-24
FI921594A (en) 1992-10-16
CA2066088C (en) 2003-06-17

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