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Thermoelectrically controlled heat medical catheter

  • US 4,860,744 A
  • Filed: 11/02/1987
  • Issued: 08/29/1989
  • Est. Priority Date: 11/02/1987
  • Status: Expired due to Term
First Claim
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1. An apparatus for applying highly controlled, localized heating or cooling to precise points in a patient to treat the patient comprising:

  • a P-doped thermocouple leg including first and second end portions and an N-doped thermocouple leg including first and second end portions, said legs being connected at said first end portions to form a probe tip junction and not being connected at said second end portions, said legs being oriented to be opposite each other;

    a metal sleeve surrounding said unconnected second end portions of said thermocouple legs;

    a layer of thermally conductive, electrically insulative material separating said thermocouple legs from said metal sleeve;

    means for delivering said pair of thermocouple legs into a patient'"'"'s body; and

    means for passing a current through said pair of legs to heat or cool said probe tip junction.

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