Implantable temperature probe

  • US 4,182,313 A
  • Filed: 05/31/1977
  • Issued: 01/08/1980
  • Est. Priority Date: 05/31/1977
  • Status: Expired due to Term
First Claim
Patent Images

1. An implantable bi-metallic temperature sensing unit comprising a rigid needle having a substantially conical portion designed to penetrate animal tissue, formed of opposing halves and a flexible substrate;

  • a high resistance thermocouple including two metallic films on said flexible substrate overlapping at the tip of said needle and being sandwiched between said halves;

    a meter means and flexible lead means extending from the distal end of said needle for connecting signals from said thermocouple to said meter means, said lead means including resistive material having characteristics similar to that of the metals in said bi-metallic thermocouple, and said needle including materials having resistance to limit the energy coupled from incident radio frequency fields.

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