Midas Rex, L.p.

Glenn T Carlson

Gary B Gage

Ray E Umber

Townesend R Scantlebury

A pneumatic surgical tool for cutting bone during surgical procedures includes a pneumatic motor having a rotary shaft, a resecting tool having a cutting element rotated by the motor, a chuck sleeve to surround and support the resecting tool, and anti-friction bearings for further rotatably supporting the resecting tool. The rotor and chuck sleeve are formed of an electrically nonconductive material. The resecting tool is formed of titanium. The bearings are formed of a ceramic, composite or plastic material.

Resecting tool for magnetic field environment

A disposable irrigation device for a motorized surgical tool comprises a cannula with a cylindrical clip bonded near one end. The clip has a C-shaped cross-section with a slot. Both the cannula and the clip are formed from malleable material which may be manually formed into a resilient desired shape. The surgical tool has a rotatable tool implement extending from a cylindrical guide member. The device is attached to the tool by inserting the guide member into the clip so that one end of the cannula is located near the implement. The malleable clip clamps around and frictionally engages the guide member. The malleable cannula may be bent to precisely direct the flow of irrigation fluid relative to the implement. For implements of greater length, the device may be inverted and attached in the opposite direction.

Irrigation clip

A surgical tool for resecting bone has a pneumatic motor within a tool body which rotates a coaxial tool implement. The tool implement is provided with irrigation fluid from a fluid reservoir. The reservoir and the motor are charged with pressurized air from a pressurized air source. A fluid control valve is located between the reservoir and the tool, and an air control valve is located between the air pressure source and the motor. The air control valve is controlled by a variable foot pedal or hand valve so that the speed of the motor is variably actuated by the foot valve.

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Keller, TX, United States of America

Glenn T Carlson