Treatment accessory for endoscope
First Claim
1. An accessory for an endoscope, comprising a tube, said tube being provided with a distal end portion, said distal end portion having a plurality of openings, said tube having a flexible portion at least at said distal end portion thereof, a plurality of slits extending along the axis of said tube and formed on said flexible portion to define bendable band sections, a mechanism applying a force in a direction where said flexible portion is compressed along the axis of said tube, said mechanism including a wire, a distal end of said wire being connected to the distal end portion of said tube, said plurality of openings being formed as said bendable band sections expand radially due to the force applied by said mechanism, and a clearance between the wire and the inner surface of the tube allowing fluid to flow through said clearance and said plurality of openings.
1 Assignment
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Accused Products
Abstract
An accessory of an endoscope includes a tube. At least the distal end portion of the tube is formed to have a predetermined resilience, and a plurality of slits extending in the axial direction of the tube are formed at the distal end portion of the tube. A mechanism is provided to bias the distal end of the tube towards the proximal end thereof so that the band portions between the plurality of slits radially expand to define a plurality of openings. The mechanism can forcibly strain the band portions and forcibly and radially expand the band portions.
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Citations
29 Claims
- 1. An accessory for an endoscope, comprising a tube, said tube being provided with a distal end portion, said distal end portion having a plurality of openings, said tube having a flexible portion at least at said distal end portion thereof, a plurality of slits extending along the axis of said tube and formed on said flexible portion to define bendable band sections, a mechanism applying a force in a direction where said flexible portion is compressed along the axis of said tube, said mechanism including a wire, a distal end of said wire being connected to the distal end portion of said tube, said plurality of openings being formed as said bendable band sections expand radially due to the force applied by said mechanism, and a clearance between the wire and the inner surface of the tube allowing fluid to flow through said clearance and said plurality of openings.
Specification