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Electrosurgical instrument and method of use

  • US 7,311,709 B2
  • Filed: 05/30/2003
  • Issued: 12/25/2007
  • Est. Priority Date: 10/22/2001
  • Status: Expired due to Term
First Claim
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1. A bi-polar electrosurgical jaw structure comprising:

  • first and second openable-closeable jaws with first and second tissue-engaging surfaces, respectively;

    first and second opposing polarity bi-polar electrodes in the first and second tissue-engaging surfaces, respectively, the bi-polar electrodes configured to be coupled to a radiofrequency source; and

    at least one jaw surface including a positive temperature coefficient of resistance body in contact with a bi-polar electrode for interacting with ohmically heated tissue and for modulating Rf current flow in engaged tissue.

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