Minnesota Mining and Manufacturing Company

Other

Linvatec Corporation

Charles E Alexson

James F Pitzen

Jeffrey D Smith

Heinz H Guenther

Matthew T Scholz

Lawrence J Fenske

Ralph A Wilkens

Lawrence Fenske

A cordless drive assembly for driving various orthopedic surgical instruments is described. The drive assembly is battery powered and includes tracks in the handle portion of its housing for receiving the battery. A latch locks the battery to the housing.A combination of a rechargeable, detachable battery system and a power tool. The battery slides onto the power tool through a complementary groove and flange structure.

Combination rechargeable, detachable battery system and power tool

A cordless drive assembly for driving various orthopedic surgical instruments is described. The drive assembly is battery powered and includes tracks in the handle portion of its housing for receiving the battery. A latch locks the battery to the housing. A combination of a rechargeable, detachable battery system and a power tool. The battery slides onto the power tool through a complementary groove and flange structure.

A cordless drive assembly for driving various orthopedic surgical instruments is described. The drive assembly is battery powered and includes tracks in the handle portion of its housing for receiving the battery. A latch locks the battery to the housing.

Rechargeable battery adapted to be attached to orthopedic device

Battery housing for an orthopedic surgical device

Orthopedic surgical device

Orthopedic surgical instrument

The present invention relates to novel orthopedic casting materials having superior layer to layer lamination, and methods for preparing the same. The orthopedic casting materials comprise a resin-coated scrim having a plurality of projections along at least one surface thereof. Preferably, each projection comprises a bundle of at least about 8 filaments, and the scrim has from about 75 to about 1500 projections per gram of scrim. The projections serve to mechanically interact with adjacent layers of the material, thereby significantly enhancing the lamination properties of the resultant material and resisting delamination once the material has cured.

Orthopedic casting materials having superior lamination characteristics

A rasp adapted for rasping generally hard tissue, such as bone, cartilage and associated tissue, and a method of forming such a rasp are disclosed. The rasp comprises a plate-like body having opposite generally parallel major surface portions, and may be detachably attached to a powered device for driving the rasp. A plurality of rasp portions are arranged along the rasp for substantially evenly rasping hard tissue. Each rasp portion has a center, and a plurality of slots through the body extending generally radially outwardly from the center of the portion to define a plurality of cantilever cutting members extending generally radially inwardly of the rasp portion generally toward the center of the rasp portion and separated from one another by the slots. The cutting members are bent to project outwardly from the major surface portions of the body with alternating members of each rasp portion being bent to project outwardly from alternating major surface portions of the body.

Bone rasp

An air motor driven device adapted for driving tools used during orthopedic surgery by rotating a driven shaft on the tool. The device has first and second spaced parallel output shafts driven at different speeds, at least one of which shafts can releasably engage the driven shaft of the tool. The second shaft has a through central opening accessible from its end opposite its output end so that the device can power pin or wire drivers or reamers guided on a guide wire. An attachment mechanism for releasably attaching a tool to the device is provided which receives an oval portion of the tool in a mating socket, and in addition to trigger operated valves for operating the air motor, provides a valve for shutting off or throttling the gas inlet line.

Growing community of inventors

Saint Paul, MN, United States of America

Charles E Alexson