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Implantable biosensing transponder

  • US 5,833,603 A
  • Filed: 03/13/1996
  • Issued: 11/10/1998
  • Est. Priority Date: 03/13/1996
  • Status: Expired due to Term
First Claim
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1. A passive biosensing device for implantation in an organism, said device including a dye having an optical property that can change in response to its environment, a photosensor for sensing the optical property of said dye, and a transponder for transmitting data corresponding to the sensed optical property to a remote reader, said dye being positioned for exposure to said organism when the device is implanted therein.

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