Flexible endoscope with variable stiffness shaft

Details Flexible endoscope with variable stiffness shaft Flexible endoscope with variable stiffness shaft

A - Human Necessities

61

B

A61B 1/00 (2006.01)

Patent

CA 2646747

A shaft for a medical device includes an outer sheath and a flexible spiral wrap therein. The flexibility of the spiral wrap is modified by changing the width of the wraps of a spiral, the thickness of the wraps of a spiral, or the gap spacing of the spiral. The spacing between wraps is maintained by attaching the spiral wrap to the cover sheath that surrounds the spiral wrap at two or more locations.

La présente invention concerne une tige pour un dispositif médical qui comprend une gaine externe et un enroulement spiralé flexible dans celle-ci. La souplesse de l'enroulement spiralé est modifiée en changeant la largeur des enroulements d'une spirale, l'épaisseur des enroulements d'une spirale ou de l'espacement de la spirale. L'espacement entre les enroulements est conservé en fixant l'enroulement spiralé à la gaine de revêtement qui entoure l'enroulement spiralé en deux ou plusieurs endroits.

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