Assembly and method for measuring the concentration of an analyte in a biological matrix. The assembly includes an implantable optical-sensing element that comprises a body, and a membrane mounted on the body in a manner such that the membrane and the body define a cavity. The membrane is permeable to...http://www.google.ca/patents/US7499738?utm_source=gb-gplus-sharePatent US7499738 - Subcutaneous analyte sensor
