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Surgical cauterization snare with polyp capturing web net

  • US 5,336,227 A
  • Filed: 02/01/1993
  • Issued: 08/09/1994
  • Est. Priority Date: 11/05/1991
  • Status: Expired due to Term
First Claim
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1. A method for removing a selected portion of internal body tissues of a patient, comprising the steps of:

  • providing a conductive cauterization loop to which a flexible web member is connected to define an expandable pocket, said web member being attached to said loop in a manner so as to expose said loop to enable effective cauterization of organic tissues by said loop;

    inserting an endoscope assembly into a patient;

    using said endoscope assembly to visually monitor internal body tissues of the patient upon insertion of said endoscope assembly into the patient;

    upon detecting selected internal body tissues to be removed from the patient, ejecting said loop with said web member from a distal end of a biopsy channel of said endoscope assembly;

    upon ejection of said loop and said web member from said biopsy channel, at least partially expanding said loop and said web member from a collapsed configuration;

    manipulating said loop from outside of the patient to pass the expanded loop over the selected internal body tissues to be removed, so that said web member substantially surrounds said selected internal body tissues;

    closing said loop to engage said selected internal body tissues around a base region thereof;

    conducting an electrical current through said loop to burn through said selected internal body tissues at said base region, thereby severing said selected internal body tissues at said base region; and

    upon a completed burning of said loop through said base region, at least partially closing said loop, thereby capturing the severed internal body tissues.

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