Implantable biomedical sensor device, suitable in particular for

Details Implantable biomedical sensor device, suitable in particular for Implantable biomedical sensor device, suitable in particular for

1993-02-03

1994-12-13

Cohen, Lee S.

Surgery

Truss

Pad

128642, 128903, A61B 507, A61B 500

Patent

active

053721330

ABSTRACT:
Implantable biomedical sensor device for measuring in vivo the presence and/or concentration of physiological substances, such as the concentration of glucose, in a human or animal body. A miniaturized electronic responder (1) arranged in a closed housing (2) of biocompatible material in an electromagnetic interrogation field is capable of contactlessly exchanging binary coded information with a transmitter/receiver, and includes electrical connections (4, 5, 6) passed through the wall of the housing, at least a work electrode (10), a counter-electrode (8) and preferably also a reference electrode (9) outside the housing. The work electrode includes a membrane (13) with hollow fibers extending transversely to the surface of the membrane and having internal walls coated with a conductive polymer (15) and in which a redox enzyme (16) is disposed. One end of the hollow fibers is in electrical contact with a processing device (20) which converts the signals supplied by the work electrode in operation to binary signals.

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patent: 5070535 (1991-12-01), Hochmair et al.
Hepato-Gastroenterology, vol. 31, No. 6, Dec. 1984, pp. 285-288.

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