Protective endoscope sheath and method of installing same

Details Protective endoscope sheath and method of installing same Protective endoscope sheath and method of installing same

A - Human Necessities

61

B

240/82

A61B 1/00 (2006.01) A61B 1/015 (2006.01) A61B 1/018 (2006.01) A61B 1/12 (2006.01)

Patent

CA 1262246

PROTECTIVE ENDOSCOPE SHEATH AND METHOD OF INSTALLING SAME Abstract of the Disclosure An endoscope sheath having a flexible tube surround- ing the elongated core of an endoscope. The flexible tube has a transparent window near its distal end positioned in front of the viewing window of the endoscope. Channels for taking biop- sies, injecting air or injecting water to wash the window of the sheath may extend along the endoscope, either inside or outside the sheath. Where the channels are positioned inside the sheath, they may be inserted in a longitudinal groove formed in the endoscope core. The protective sheath may be used with either end-viewing endoscopes or side-viewing endo- scopes. In the latter case, the channel for taking biopsies extends through an elongated elastomeric membrance so that a catheter through the biopsy channel may be moved longitudinally by manipulation of an elevator. The protective sheath may be installed by rolling the elastomeric tube into an annular configuration and then unrolling the tube over the core of the endoscope. Alternatively, the tube may be inflated in its unrolled configuration to expand the tube and allow it to be easily slipped onto the endoscope core. A variety of special- ized endoscopes may be created by using protective sheaths having a variety of special purpose medical instruments mounted at the end of a biopsy channel and operated through the channel.

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