Snare assembly for endoscope
AssigneeOlympus Optical Co., Ltd.
InventorTsutomu Okada
Life of this patent
Estimating the term…
Abstract
A snare assembly is disclosed which is inserted into a region of interest of a human body through a channel of an endoscope. The snare assembly comprises at least one flexible tube, a folded snare which is so inserted into the flexible tube as to be movable back and forth and having a folded end portion and a relatively short snare section, a slide means attached to a base end portion of the short snare section, and a stopper movable back and forth and, upon the forward movement of the slide means, abutting against the slide means to restrict an extension length of the short snare section. A fixing means is provided on the base end portion of the tube and stopper, whereby after a relative position between the tube and the stopper is adjusted the stopper and tube can be fixed at that relative position.
Claims18
A snare assembly for an endoscope comprising a flexible outer tube having a forward end and a base end;
- a folded snare inserted into said tube to be movable back and forth and having a folded end portion and a relatively short snare section extending from a base end portion of the snare to the folded end portion;
- slide means attached to the base end portion of the short snare section and having the snare section extending therein;
- stopper means slidably positioned within said flexible tube to be movable back and forth within said flexible tube to change the longitudinal position of said stopper means relative to said flexible tube, said stopper means abutting against said slide means upon the forward movement of said snare beyond a predetermined position;
- and
- first releasable fixing means on said stopper means and second releasable fixing means on said flexible tube, said first fixing means being movable with said stopper means and being releasably attachable to said second fixing means for releasably fixing the stopper means to said tube at a selected relative position for changing the distance said relatively short snare section extends from the forward end of said flexible tube.
A snare assembly for an endoscope comprising:
- a flexible tube having a forward end and a base end;
- a folded snare inserted into the tube to be movable back and forth and having a folded end portion and a snare section which is short relative to said folded end portion;
- slide means attached to a base end portion of the short snare section;
- stopper means movable back and forth and adapted to abut against said slide means upon the forward movement of said snare, said stopper means comprising a stopper disposed adjacent to said slide means and having a projection extending out from an elongated hole defined in said stopper means;
- and
- fixing means for fixing the stopper means and tube at a relative position between the stopper means and tube, after that relative position has been adjusted, said fixing means being adapted to guide said slide means and said stopper means, said fixing means further including a stopper holder connected to the base end of said tube, receiving said slide means to permit it to slide and having said elongated hole in a longitudinal direction and latching means for latching said projection to said stopper holder.
Dependencies are inferred from the claim text.