05353783 is referenced by 135 patents and cites 8 patents.

An endoscopic method utilizes a substantially thin-walled elongate tubular sheath including an annular inflatable balloon, the sheath having a use configuration with an inner diameter larger than an outer diameter of an insertion member of an endoscope, whereby the sheath may be removably disposed about such insertion member and retained on the insertion member by inflating the annular balloon to substantially surround same prior to insertion of the insertion member into a patient. The device further comprises a transparent cap member and an element or elements for attaching the cap member in a fluid tight seal to a distal end of the sheath so that the cap member covers a distal end of the insertion member of the endoscope. Biopsy channels, some of which are expandable from collapsed configurations to receive endoscopic surgical instruments during an operation, are provided on or in the sheath.

Endoscopic method using sheath
Application Number
Publication Number
Application Date
June 7, 1993
Publication Date
October 11, 1994
Peter J Wilk
185 W. End Ave., New York, 10023
Naomi L Nakao
303 E. 57th St., New York, 10022
Henry D Coleman
R Neil Sudol
A61B 1/00
View Original Source