초록 ▼

A small diameter flexible electrode designed for subcutaneous in vivo amperometric monitoring of glucoses is described. The electrode is designed to allow "one-point" in vivo calibration, i.e., to have zero output current at zero glucose concentration, even in the presence of other electroreactive s

A small diameter flexible electrode designed for subcutaneous in vivo amperometric monitoring of glucoses is described. The electrode is designed to allow "one-point" in vivo calibration, i.e., to have zero output current at zero glucose concentration, even in the presence of other electroreactive species of serum or blood. The electrode is preferably three or four-layered, with the layers serially deposited within a recess upon the tip of a polyamide insulated gold wire. A first glucose concentration-to-current transducing layer is overcoated with an electrically insulating and glucose flux limiting layer (second layer) on which, optionally, an immobilized interference-eliminating horseradish peroxidase based film is deposited (third layer). An outer (fourth) layer is biocompatible.

대표청구항 ▼

[ What is claimed is:] [1.]1. A flexible analyte sensor comprising:a portion of the sensor that is adapted for positioning external to the animal and for connection to a device for measurement of the electrical signal generated by the sensor;a portion of the sensor that is adapted for subcutaneous i

[ What is claimed is:] [1.]1. A flexible analyte sensor comprising:a portion of the sensor that is adapted for positioning external to the animal and for connection to a device for measurement of the electrical signal generated by the sensor;a portion of the sensor that is adapted for subcutaneous implantation in an animal, comprising:at least one non-corroding, analyte-responsive working electrode; anda sensing layer coupled to the working electrode;wherein the sensor is flexible and is adapted to provide an electrical signal that is substantially insensitive to relative motion between the implanted portion of the sensor and tissue surrounding the implanted portion of the sensor.