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Sensors for continuous monitoring of biochemicals and related method

  • US 6,256,522 B1
  • Filed: 08/17/1995
  • Issued: 07/03/2001
  • Est. Priority Date: 11/23/1992
  • Status: Expired due to Fees
First Claim
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1. A sensor unit for sensing properties of a sample analyte and to be used with remote detection means, said sensor unit comprisinga capsule defining a processing chamber, at least a portion of said capsule being a semi-permeable membrane, which is permeable to said analyte, receptor material disposed within said chamber and capable of chemically interacting with said analyte, said sensor unit further comprises a pH indicator within said sensor unit, and said pH indicator being of such size that diffusion of said pH indicator out of said chamber is resisted by said semi-permeable membrane.

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