Methods and materials for stabilizing analyte sensors

US9492111B2 · kind B2 · utility

Assignee

• MEDTRONIC MINIMED, INC. · US

Inventors

• Rajiv Shah · Rancho Palos Verdes, US
• Udo Hoss · Ulm, DE
• Gopikrishnan Soundararajan · San Fernando, US
• Nannette M. Van Antwerp · Valencia, US
• Barry P. Pham · Los Angeles, US

Key dates

• Filing date: Jul 26, 2006
• Grant date: Nov 15, 2016
• Expiry date: Oct 1, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/6849
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The disclosure provides a sensor including a sensor having an external surface and a cannula. The cannula comprises a substantially cylindrical wall encircling a lumen, at least one aperture and a distal end. The sensor is positioned within the lumen and the distal end of the cannula extends beyond the sensor. This configuration functions for example to stabilize chemical reactions associated with the sensor by creating a buffer zone between the sensor and the surrounding tissues at the site of implantation. In certain embodiments, the sensor can further comprise an accessory material in proximity to the external surface, wherein the accessory material modifies the biological response of a tissue that is in contact with the sensor. The sensor can also comprise anchors that keeps the sensor in contact with subcutaneous tissue of a subject upon insertion of the sensor into the body of the subject.