A61F2310/00209

Orthopedic implant and method of producing the implant
10543095 · 2020-01-28 ·

An orthopedic implant in the form of a hip joint endoprosthesis includes a ceramic head set onto an anchoring shaft, which is configured and adapted to be inserted and anchored into a bone. The head has an inner blind recess. The anchoring shaft has a tenon. A metallic sleeve having an approximately central through-bore is soldered into the recess of the head. The tenon of the anchoring shaft is inserted and secured in the bore of the sleeve. The head is made of a ceramic based on zirconium dioxide, aluminum oxide or a mixed ceramic, while the sleeve is made of a high strength titanium material. A connection between the head and the sleeve is produced by a silicate ceramic solder that solidifies or hardens in a ceramic firing, and by a subsequently applied glass solder, of which the excess can exit from the recess via the through-bore into a hollow space existing between the sleeve and the tenon.

Orthopedic Implant
20190015214 · 2019-01-17 ·

An orthopedic implant in the form of a hip joint endoprosthesis consists of a head, which is set onto an anchoring shaft, which itself is insertable into a bone and anchorable therein. The head comprises an inner blind-hole-type recess, and the anchoring shaft is provided with a tenon for inserting into this recess. A sleeve provided with an approximately central through-bore is soldered into the recess of the head, via which sleeve the head is setable or mountable on the tenon. The head consists of a ceramic based on zirconium dioxide, aluminum oxide or a mixed ceramic, while the sleeve consists of a high strength titanium material. The connection between the head and the sleeve is produced by a silicate ceramic solder that solidifies or hardens in a ceramic firing, as well as by a subsequently applied glass solder, of which the excess can exit via the through-bore into a hollow space existing between the sleeve and the tenon. Both the recess of the head as well as the metallic sleeve are embodied approximately cylinder-shaped.