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Method and apparatus for performing biopsy

  • US 5,749,889 A
  • Filed: 02/13/1996
  • Issued: 05/12/1998
  • Est. Priority Date: 02/13/1996
  • Status: Expired due to Term
First Claim
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1. A surgical access device for obtaining tissue during endoscopic surgery, said surgical device having a proximal end, a distal end and an elongate body extending therebetween, said surgical access device also having an outer surface defining at any particular location along its longitudinal axis, a cross-sectional profile, said surgical access device comprising:

  • a first channel providing a first lumen for the insertion of an instrument, endoscope or other visualization device;

    an open-loop member at a distal end of said first channel, said open-loop member having a transverse aperture formed therethrough, said aperture facing laterally outwardly from the longitudinal axis of said surgical access device; and

    at least one secondary channel providing a secondary lumen for the insertion of an instrument, endoscope or other visualization device, said secondary channel being mounted on said surgical access device so as to be positioned along said outer surface thereof, said secondary channel being constructed from a thin pleated membrane which, prior to dilation of said secondary channel, is self-retained along the outer surface of said first channel.

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