Dow Corning Wright Corp.

Spinal Innovations, LLC

Wright Medical Technology, Inc.

Kenneth William Russell

Marc Evan Richelsoph

Leo A Whiteside

Roy Drake Bloebaum

Richard E Jones

Samuel J Chiarizzio

A final fixation assembly includes a rod receiving ring for receiving a portion of a rod therein and including a compressible insert for receiving a portion of the rod therein in a noncompressed condition and conforming allowing the portion of the rod to fixedly lock the portion of the rod therein in a compressed condition. The rod receiving ring maintains the insert in the compressed condition when the insert is seated therein.

Locking mechanism

A long bone prosthesis (10) includes a neck portion (12), a stem portion (16) and an intermediate portion (20) disposed between the neck portion (12) and stem portion (16). The intermediate portion (20) includes seals for containing cement thereabout under pressure adjacent thereto and preventing leaking of cement therefrom during implantation of the prosthesis (10).

Dual fixation prosthesis

According to the invention there is provided surgical instrumentation for implanting an orthopedic prosthesis comprising a handle having opposed longitudinal ends and a head assembly situated at one end of the handle. The head assembly includes an external impact surface for transmitting force to an orthopedic instrument or prosthesis. A spring and sliding shaft arrangement are disposed within the head assembly for dampening the force from the impact surface. The head assembly is adjustable for varying the force absorbed by the spring and sliding shaft arrangement.

Controlled force mallet

The present invention relates to a distal femoral surface shaping guide for mounting on an intramedullary alignment guide which references the central long axis of the femur in shaping the distal femoral surface and a method for shaping the distal femur using that shaping guide. The alignment guide of the present invention is adjustable relative to the surface of the anterior femoral cortex to insure that the anterior aspect of the distal femoral condyles is resected relative to that surface and, preferably, at the same level as that surface. The alignment guide of the present invention provides a main body which remains attached to the intramedullary alignment guide throughout the entire shaping of the distal femur. It thus requires fewer cutting guides and alignment steps than other shaping guides while allowing greater accuracy in shaping the distal femur relative to the central long axis of the femur.

Femoral surface shaping guide for knee implants

This invention relates to a femoral trial prosthesis/rasp assembly for use in hip implant surgery. The novel handle assembly grips the combination trial prosthesis/rasp in a secure manner by clamping over and locking onto a post on the trial prosthesis/rasp which later serves as a mounting piece for a femoral prosthesis head used in trial reductions. The handle assembly preferably comprises a straight member which has a recess for reception of one half of the post and a pivotable lever which contains an opposing recess which fits over the remainder of the post when a screw is tightened to bring the two recesses together over the post. The trial prosthesis/rasp is cooperatively engaged by a projection located at the end of the handle assembly to hold the trial prosthesis/rasp in a preselected orientation with respect to the handle assembly during use. The trial prosthesis/rasp is easily released from the handle by turning the screw to permit the lower portion of the straight member and lever to separate.

Growing community of inventors

Cordova, TN, United States of America

Kenneth William Russell