Surgical instrument
AssigneeIntravascular Medical, Inc.
InventorMan Fai Shiu
Life of this patent
Estimating the term…
Abstract
A medical device is described for use in removing material from a body. The removal of material is accomplished by slidably contacting a cutting edge of a cutter member with the inner wall of a sleeve, where the cutting edge cooperates with the inner wall of the sleeve to capture and cut the material. The cutter member may be hollow and may be in fluid communication with a chamber for collection and removal of cut material from the cutter member. The distal tip of the cutter member may extend beyond, or be enclosed within, the sleeve, while the proximal end of the cutter member is mounted on a rotatable shaft.
Claims9
A medical device for removing material from a body comprising:
- a sleeve having distal and proximal ends;
- a distal face of the sleeve being substantially open so as to allow material to enter the sleeve through the distal end;
- an elongate flexible rotatable shaft;
- and,
- a cutter member disposed in the sleeve and attached to the flexible shaft, which member comprises at least one cutting edge that cooperates in sliding contact with the internal surface of the sleeve to cut material in the body, the cutter member further comprising a dull tip that extends beyond the distal face of the sleeve.
A rotational medical device comprising:
- an elongate flexible tubular body, having a proximal end, a distal end and a lumen extending therebetween;
- a cutter housing attached to the distal end of the body and having a bearing ring groove;
- a rotatable drive element extending through the lumen;
- a rotatable cutter tip positioned at least partially within the cutter housing and comprising helical threads;
- the rotatable cutter tip having a flange which is positioned within the bearing ring groove so as to allow rotational movement of the cutter tip relative to the cutter housing;
- and the cutter tip further comprising a blunt distal end.
Dependencies are inferred from the claim text.