07056284 is referenced by 361 patents and cites 19 patents.

Apparatus and methods for endoscope assemblies having working channels with reduced bending and stretching resistance are disclosed. In one embodiment, an endoscope assembly includes a sheath having a body portion adapted to at least partially encapsulate an endoscopic insertion tube, and a working channel attached to the body portion and extending along at least a portion of the body portion. The working channel includes a component for reducing the resistance of the assembly to bending and stretching. In alternate aspects, the working channel may include a cut, a gap, a sliding portion, or an expansion section. Endoscope assemblies having a working channel in accordance with the invention advantageously reduce the articulation and stretching resistance of the assembly during articulation of the endoscope assembly. Also, because the axial forces (tension and compression) within the working channel are reduced, the working channel can be fabricated out of a relatively hard, inelastic material, thereby reducing the friction within the working channel and improving the physician's ability to perform a medical procedure.

Title
Endoscope assemblies having working channels with reduced bending and stretching resistance
Application Number
10/821036
Publication Number
7056284 (B2)
Application Date
April 7, 2004
Publication Date
June 6, 2006
Inventor
Katsumi Oneda
Alpine
NJ, US
Stephen Martone
Westford
MA, US
Agent
Dorsey & Whitney
Assignee
Vision Sciences
MA, US
IPC
A61B 1/00
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