Subcutaneous analyte sensor

  • US 6,952,603 B2
  • Filed: 03/16/2001
  • Issued: 10/04/2005
  • Est. Priority Date: 03/16/2001
  • Status: Expired due to Fees
  • ×
    • Pin
First Claim
Patent Images

1. An assembly for measuring the concentration of an analyte in a biological matrix, comprising:

  • an implantable optical-sensing element comprising a body;

    a first semi-permeable membrane mounted on said body, said first semi-permeable membrane being permeable to said analyte, and impermeable to background species in said biological matrix, said first membrane and said body aligned to define a first cavity;

    a first refractive element disposed in said first cavity;

    a second membrane mounted on said body remote from said first membrane, said second membrane and said body aligned to define a second cavity; and

    a second refractive element disposed in said second cavity;

    a source for providing light into each of said first and second cavities toward said respective first and second refractive elements;

    a detector for receiving light from each of said first and second cavities; and

    a signal-processing and computing element optically coupled to said detector for relating said received light to a concentration of said analyte.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×