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US 7,431,230 B2Granted
Apparatus and method for bone morselization for surgical grafting
AssigneeMedtronic PS Medical, Inc.
InventorsCameron N. McPherson, Larry D. Estes, Scott A. Singer
Life of this patent
Estimating the term…
Abstract
A bone morselization apparatus and method according to which a cutter bit is mounted to a casing containing a motor; and the casing is manually grasped and positioned over a plurality of bone segments. When the motor is activated, the cutter bit reciprocates and the bone segments are impacted by the cutter bit to morselize the segments.
Claims20
An apparatus for morselizing bone segments, the apparatus comprising:
- a casing;
- a motor disposed in the casing and having a reciprocal output;
- and
- a cutter bit having a longitudinally extending shaft coupled to the motor so as to reciprocate when driven by the motor to impact and morselize the segments, the cutter bit also having a circular base member fixed relative to the shaft, the circular base member having a lower surface defining a plane substantially normal to the longitudinally extending shaft with a plurality of cutting elements protruding therefrom,
- the reciprocal output from the motor reciprocating both the shaft and the circular base member.
2 more elements
An apparatus for morselizing bone segments, the apparatus comprising:
- a pedestal;
- an arm extending from the pedestal;
- a motor disposed in the pedestal or the arm and having a reciprocal output;
- and
- a cutter bit having a longitudinally extending shaft coupled to the motor so as to reciprocate when driven by the motor to impact and morselize the segments, the cutter bit also having a circular base member fixed relative to the shaft, the circular base member having a lower surface defining a plane substantially normal to the longitudinally extending shaft with a plurality of cutting elements protruding therefrom,
- the reciprocal output from the motor reciprocating both the shaft and the circular base member.
3 more elements
A method for morselizing bone segments:
- mounting a cutter bit to a casing, the cutter bit having a longitudinally extending shaft and having a circular base member fixed relative to the shaft, the circular base member having a lower surface defining a plane substantially normal to the longitudinally extending shaft with a plurality of cutting elements protruding therefrom;
- manually grasping the casing and positioning it over a plurality of the segments;
- activating a motor to cause reciprocation of both the shaft and the circular base member of the cutter bit;
- and
- impacting the segments with the cutter bit to morselize the segments.
2 more elements
A method for morselizing bone segments comprising:
- mounting an arm to a pedestal;
- mounting a cutter bit to an arm, the cutter bit having a longitudinally extending shaft and having a circular base member fixed relative to the shaft, the circular base member having a lower surface defining a plane substantially normal to the longitudinally extending shaft with a plurality of cutting elements protruding therefrom;
- positioning a vessel containing bone segments under the cutter bit;
- activating a motor to cause reciprocation of both the shaft and the circular base member of the cutter bit;
- and
- impacting the segments with the cutter bit to morselize the segments.
3 more elements
Dependencies are inferred from the claim text.