Gary P Fischetti

US Patent:

59447567, Aug 31, 1999

Filed:

Feb 22, 1994

Appl. No.:

8/200118

Inventors:

Gary Fischetti - Franklin MA
David Sheehan - Carver MA

Assignee:

Johnson & Johnson Professional, Inc. - Raynham MA

International Classification:

A61F 228
A61F 230
A61F 238

US Classification:

623 18

Abstract:

A modular prosthesis attachment mechanism which uses a special bolt that provides an attachment position that is not directly over the hole or recess used to capture the head of the bolt. Thus, the attachment mechanism can be used with one location hole on a prosthesis and provide multiple augmentation locations just by offering multiple bolts with varying offsets. The use of a washer-like support may also be required to help redistribute the forces associated with the new attachment location. Thus, the invention is beneficial in knee replacement surgery requiring augmentation pieces. By providing the surgeon with a number of options to best place each piece, such as a stem, this mechanism can be helpful in meeting the needs of individual patients.