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Multichannel endoscope

  • US 4,146,019 A
  • Filed: 09/30/1976
  • Issued: 03/27/1979
  • Est. Priority Date: 09/30/1976
  • Status: Expired due to Term
First Claim
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1. In an instrument for simultaneously viewing an internal surface of a body cavity such as a stomach and performing a medical procedure on the internal surface from an external position, the combination of:

  • a flexible endoscope comprising a tube in the order of one half inch diameter and several feet in length, and having a distal end and a proximal end and having a first illumination channel, a second viewing channel, and a third channel, each channel being within said tube and providing a passage between said ends; and

    a suction line having first and second ends and positioned within said third channel, with said first end projecting from said proximal end for connection to a vacuum source, with said suction line slidable in said third channel and of sufficient length for projecting said second end of said line beyond the distal end of said tube with the first end still projecting from the proximal end, for positioning said second end at said internal surface with said tube distal end spaced from said internal surface and for removing and replacing said line in said third channel without disturbing said endoscope.

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