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Method and apparatus for severing and capturing polyps

  • US 6,010,512 A
  • Filed: 09/03/1998
  • Issued: 01/04/2000
  • Est. Priority Date: 04/13/1995
  • Status: Expired due to Term
First Claim
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1. Apparatus for severing and retrieving a polyp for withdrawal from a patient comprising:

  • a catheter extending between a distal end tip and a proximal end, for positioning proximate a polyp;

    a self-expansible severing and capturing device for retrieving a polyp, said severing and capturing device being extensible from said distal end of said catheter in an expanded form and retractable into said distal end in a compacted form; and

    a control device at the proximal end of said catheter for selectively extending and retracting said severing and capturing device relative to said distal end of said catheter, wherein said severing and capturing device includes, in said expanded form, a wire forming a complete loop portion lying in a first plane to receive a polyp therethrough and a substantially planar collar portion fixed to and disposed distally from said complete loop portion and lying in a second plane such that retraction of said wire urges the closing of said complete loop portion to sever a polyp extending therethrough and urges the severed polyp into said collar portion.

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