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Apparatus for developing an anatomic space for laparoscopic procedures with laparoscopic visualization

  • US 6,004,337 A
  • Filed: 12/15/1997
  • Issued: 12/21/1999
  • Est. Priority Date: 06/02/1992
  • Status: Expired due to Term
First Claim
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1. A laparoscopic apparatus for creating a space between tissue layers, the apparatus comprising:

  • a guide comprising a ring-shaped proximal portion and a U-shaped member extending distally from said ring shaped proximal portion, said guide having a sufficient length to preserve access to the space when said guide is advanced between the tissue layers into the space;

    a substantially rigid tunneling member having an internal bore adapted to receive a scope and an open, blunt distal end, said tunneling member being insertable through said guide and functioning as an obturator for tunneling between the tissue layers;

    a deflated, inflatable balloon mounted on said tunneling member; and

    means for inflating said balloon to cause said balloon to progressively expand to dissect the tissue layers and create the space.

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