Implanted sensor processing system and method

A - Human Necessities – 61 – B

Patent

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A61B 5/00 (2006.01)

Patent

CA 2413758

A quantitative measurement system includes an external unit (101a) and an internal unit (102a) are provided for obtaining quantitative analyte measurements, such as within the body. In one example of an application of the system, the internal unit (102a) would be implanted either subcutaneously or otherwise within the body of a subject. The internal unit (102a) contains optoelectronics circuitry (102b), a component of which may be comprised of a fluorescence sensing device. The optoelectronics circuitry (102b) obtains quantitative measurement information and modifies a load (102c) as a function of the obtained information. The load (102c) in turn varies the amount of current through coil (102d), which is coupled to a coil (101f) of the external unit (101a). A demodulator (101b) detects the current variations induced in the external coil (101f) by the internal coil (102d) coupled thereto, and applies the detected signal to processing circuitry, such as a pulse counter (101c) and computer interface (101d), for processing the signal into computer- readable format for inputting to a computer (101e).

Un système de mesure quantitative comprend une unité externe (101a) et une unité interne (102a) permettant d'obtenir des mesures quantitatives de mélange à analyser, à l'intérieur du corps, par exemple. Dans un exemple de l'application du système, l'unité interne (102a) peut être implantée soit sous la peau, soit ailleurs dans le corps d'un sujet. L'unité interne (102a) contient des circuits opto-électroniques (102b), un composant desquels pouvant être constitué d'un dispositif de détection fluorescent. Les circuits opto-électroniques (102b) obtiennent des informations de mesure quantitative et modifient une charge (102c) en fonction des informations obtenues. La charge (102c) fait, à sont tour, varier la quantité de courant à travers la bobine (102d), laquelle est couplée à une bobine (101f) de l'unité externe (101a). Un démodulateur (101b) détecte les variations de courant induites dans la bobine externe (101f) par la bobine interne (102d) couplée à celle-ci, et applique le signal détecté aux circuits de traitement, tels qu'un compteur d'impulsions (101c) et une interface informatique (101d), en vue de traiter le signal dans un format lisible par un ordinateur afin de l'entrer dans un ordinateur (101e).

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