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US 5,746,747 AGranted
Polypectomy instrument
OwnerJohn A. McKeatinginventor
Life of this patent
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Abstract
An instrument to perform endoscopic polypectomy having a first portion which grasps a polyp and a second portion which cuts away the polyps. The second portion is in contact with the first portion while the first portion grasps the polyp when the polyp is cut by the second portion. The first sheath member preferably contains a small grasping forcep mechanism. The second sheath member preferably contains a wire snare mechanism.
Claims6
A cut and retrieval instrument comprising:
- a first portion which is adapted to grasp a polyp, said first portion includes a first sheath member having a grasping forcep slidably disposed within said first sheath member;
- and
- a second portion which is adapted to cut away the polyp, said second portion connected to the first portion, said second portion includes a second sheath member disposed adjacent to the first sheath member having a wire snare with a snare loop slidably disposed within said second sheath member such that the grasping forcep can slide relative to the first sheath member through the snare loop of the wire snare when the snare loop extends from the second sheath member, said loop trained into a bent configuration which upon its advancement out of the second sheath bends towards the forcep so the forcep slides through the loop.
A method for removing a polyp from a wall of a colon comprising the steps of:
- grasping the polyp with a forcep housed in a first sheath member;
- pulling the polyp so it moves away from the colon wall;
- moving a wire snare over the forcep grasping the polyp until the wire snare is essentially below the polyp and above the colon wall;
- closing the wire snare until the polyp is cut from the colon wall;
- and
- removing the forcep grasping the polyp from the colon.
3 more elements
Dependencies are inferred from the claim text.