POLYMER BASED JOINT IMPLANTS AND METHOD OF MANUFACTURE

摘要

A method and implant based on injection molding techniques. The method produces polymeric components suitable for implantation with a structure and mechanical properties close to those of natural bone tissue. In a variant, method for making an implant or component thereof includes forming a standard shape foamed blank, and over-molding a thin layer of non-foamed PEEK material onto the standard shaped foamed blank to obtain a final implant component geometry, whereby the blank is completely encapsulated by the over-molded layer.

主权项

1. A method of processing an implant order, the method comprising the steps of:
a. producing a variety of prosthesis pre-forms having a dense outer shell resembling cortical bone and a low density core or hollow centre resembling cancellous bone, the pre-form sized so as to allow for optional secondary machining to a final desired shape without breaking through the dense outer shell into the low density core, the pre-forms thereby having a structure close to that of natural bone and a geometry suited to the needs of a class of patients; b. selecting the pre-form which best matches the needs of a particular patient or class of patients; c. as necessary, machining and finishing the pre-form to better conform to the particular patient or class of patients; d. sterilizing the pre-form; and e. packaging the sterilized pre-form for delivery of the preform to suit the needs of doctor and the particular patient or class of patients.