High speed surgical cutting instrument

摘要

A surgical cutting instrument including an outer tube having a bearing sleeve disposed within a lumen thereof, along with an inner wire assembly extending through the outer tube and the bearing sleeve. A cutting tip is connected to the inner wire assembly distal the outer tube. Conversely, a coupling chuck is connected to a proximal section of the inner wire assembly, with a housing maintaining the outer tube and the coupling chuck. When mounted to a motor, the inner wire assembly is rotated to effectuate a surgical cutting procedure at the cutting tip, with the bearing sleeve supporting the inner wire assembly relative to the outer tube during rotation.

主权项

1. A surgical cutting instrument for use with a motor having a drive mechanism, the instrument comprising:
an outer tube defining a proximal end, a distal end, a proximal region extending to the proximal end, a distal region extending to the distal end, and a lumen extending from the proximal end to the distal end; a bearing sleeve being substantially tubular in shape and defining a proximal terminus, a distal terminus, and an inner passage extending from the proximal terminus to the distal terminus, at least a portion of the bearing sleeve secured within the lumen of the outer tube with a plurality of exteriorly projecting ribs facing an inner surface of the outer tube; an inner wire assembly defining a proximal section and a distal section, the inner wire assembly extending through the lumen of the outer tube and through the inner passage of the bearing sleeve; a cutting tip connected to the distal section of the inner wire assembly; a coupling chuck adapted for connection to a drive mechanism of a motor, the coupling chuck being connected to the proximal section of the inner wire assembly; and a housing maintaining the proximal region of the outer tube and the coupling chuck, the housing being adapted for connection to a motor.