CA2044150A1 - Dispositif implantable d'evaluation du taux de glucose - Google Patents

Dispositif implantable d'evaluation du taux de glucose

Info

Publication number
CA2044150A1
CA2044150A1 CA2044150A CA2044150A CA2044150A1 CA 2044150 A1 CA2044150 A1 CA 2044150A1 CA 2044150 A CA2044150 A CA 2044150A CA 2044150 A CA2044150 A CA 2044150A CA 2044150 A1 CA2044150 A1 CA 2044150A1
Authority
CA
Canada
Prior art keywords
glucose
implantable device
measurement
glucose levels
chambers
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
CA2044150A
Other languages
English (en)
Other versions
CA2044150C (fr
Inventor
Frederic Neftel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2044150A1 publication Critical patent/CA2044150A1/fr
Application granted granted Critical
Publication of CA2044150C publication Critical patent/CA2044150C/fr
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
    • A61B5/14532—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 glucose, e.g. by tissue impedance measurement
    • 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
    • A61B2562/028—Microscale sensors, e.g. electromechanical sensors [MEMS]

Abstract

2044150 9104704 L'invention concerne un dispositif implantable permettant une évaluation précise du taux de glucose sanguin. Le principe, selon l'invention, consiste à mesurer de façon précise et durable la valeur de la pression osmotique due au glucose dans un territoire interstitiel à l'aide d'un dispositif implanté de très faible encombrement comprenant deux chambres de mesures constituées chacune d'une chambre de mesure interne (41), isolée du milieu environnant par une membrane hémiperméable au glucose (20) pour la première chambre de mesure et une membrane perméable au glucose (20) et imperméable aux molécules plus grosses que le glucose pour la deuxième chambre de mesures, en rapport avec un capteur de pression (10, 11, 12, 53) pour chacune des deux chambres de mesures, relié à un système électronique permettant d'informer le milieu extérieur à l'organisme de la valeur de la pression mesurée dans chacune des deux chambres de mesures et, par conséquent, du taux de glucose. Le capteur de pression peut, notamment, être en silicium usiné par procédé photolithographique et, couplé à une self (L), réaliser un circuit passif résonant de type LC à condensateur variable en fonction de la pression. Il suffit, dès lors, d'interroger le capteur depuis l'extérieur par un oscillateur variable couplé magnétiquement pour connaître, avec précision, la valeur de la pression osmotique régnant dans chacune des deux chambres de mesures et, par différence, le taux de glucose.
CA002044150A 1989-10-06 1990-10-05 Dispositif implantable d'evaluation du taux de glucose Expired - Fee Related CA2044150C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913069 1989-10-06
FR8913069A FR2652736A1 (fr) 1989-10-06 1989-10-06 Dispositif implantable d'evaluation du taux de glucose.

Publications (2)

Publication Number Publication Date
CA2044150A1 true CA2044150A1 (fr) 1991-04-07
CA2044150C CA2044150C (fr) 1999-03-30

Family

ID=9386146

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002044150A Expired - Fee Related CA2044150C (fr) 1989-10-06 1990-10-05 Dispositif implantable d'evaluation du taux de glucose

Country Status (11)

Country Link
US (1) US5337747A (fr)
EP (1) EP0451233B1 (fr)
JP (1) JP2784259B2 (fr)
AT (1) ATE119006T1 (fr)
AU (1) AU638067B2 (fr)
CA (1) CA2044150C (fr)
DE (1) DE69017428T2 (fr)
DK (1) DK0451233T3 (fr)
ES (1) ES2071115T3 (fr)
FR (1) FR2652736A1 (fr)
WO (1) WO1991004704A1 (fr)

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WO1991004704A1 (fr) 1991-04-18
EP0451233B1 (fr) 1995-03-01
DK0451233T3 (da) 1995-08-28
ATE119006T1 (de) 1995-03-15
JPH04506919A (ja) 1992-12-03
JP2784259B2 (ja) 1998-08-06
DE69017428D1 (de) 1995-04-06
CA2044150C (fr) 1999-03-30
AU638067B2 (en) 1993-06-17
FR2652736A1 (fr) 1991-04-12
DE69017428T2 (de) 1995-09-21
EP0451233A1 (fr) 1991-10-16
AU6510090A (en) 1991-04-28
ES2071115T3 (es) 1995-06-16
US5337747A (en) 1994-08-16

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