Prosthetic implant with spacers having tapered trailing edges
February 28, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3793650 Endoprosthesis for a knee joint Method of securing a prosthesis using cement spacers Centering system for hip replacement Prosthetic cement spacer and method for using same Retention device for centering an endoprosthesis shank in a bone Articulated prosthesis Artificial joint fixation to bone Prosthetic acetabular cup Prosthetic device with spacers InventorsAssigneeApplicationNo. 662089 filed on 02/28/1991US Classes:623/23.25Having integral spacerExaminersPrimary: Frinks, Ronald L.Attorney, Agent or FirmForeign Patent References
International ClassesA61F 002/36A61F 002/30 AbstractA prosthetic implant for insertion into a cement filled intramedullary canal including a plurality of spacers formed from PMMA. The spacers include a body having a frontal portion and a trailing portion. The body of the spacers narrowing with distance from said frontal portion toward said trailing portion. The narrowing body of the spacers interrupting the flow of cement along the implant body as the body is inserted into a cement filled intramedullary canal. The narrowing trailing portion of the spacers cause the cement flow to smoothly re-attach to the implant body without creating substantial disturbances or vortexes in the cement. | |
