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US 4,187,559 AGranted
Body joint endoprosthesis
AssigneeSybron Corporation
InventorsHelmut Grell, Achim Engelhardt
Life of this patent
Estimating the term…
Abstract
A body joint endoprosthesis includes an anchoring member having a shaft anchored in a first bone and a pivot member connected to the anchoring member by a pivot joint. The pivot member includes a first body joint member and a support element that bears against a seating surface of the first bone. The first body joint member and a second body joint member, connected to the second bone, form the body implant joint.
Claims32
A body joint endoprosthesis comprising:
- an anchoring part comprising a shaft adapted to be anchored in a first bone;
- a pivot member comprising a first joint member and a support element adapted to bear against a seating surface of the first bone, said pivot member being connected to said anchoring part by a joint that permits said support element to pivot in a direction substantially normal to said seating surface;
- and
- a second joint member adapted to be connected to a second bone, with said first joint member and said second joint member forming a body implant joint.
1 more element
An elbow joint endoprosthesis comprising:
- an anchoring part comprising a shaft adapted to be anchored in an upper arm bone;
- a pivot member connected to said anchoring part by a pivot joint, said pivot member comprising a hinge pin and two spaced condylar shells connected to the ends of said hinge pin and adapted to bear against a seating surface of said upper arm bone, said hinge pin and said condylar shells being made in one piece;
- and
- a second joint member adapted to be connected to a second bone, with said hinge pin and said second joint member forming an elbow implant joint.
1 more element
An elbow joint endoprosthesis comprising:
- an anchoring part comprising a shaft adapted to be anchored in an upper arm bone;
- a pivot member connected to said anchoring part by a pivot joint, said pivot member comprising a hinge pin and two spaced condylar shells adapted to bear against a seating surface of said upper arm bone, said hinge pin being connected to each of said condylar shells by a short connecting piece, with the part of each shell free from the connecting piece containing a perforation for a bone screw;
- and
- a second joint member adapted to be connected to a second bone, with said hinge pin and said second joint member forming an elbow implant joint.
1 more element
An elbow joint endoprosthesis comprising:
- an anchoring part comprising a stop and a shaft adapted to be anchored in an upper arm bone;
- a pivot member connected to said anchoring part by a pivot joint, said pivot member comprising a hinge pin and two spaced condylar shells adapted to bear against a seating surface of the upper arm bone;
- and
- a cylindrical half shell adapted to be connected to an ulna and having projections for anchorage to the ulna, said shell having an end face comprising an abutment surface for making contact with said stop in the extended position of the upper arm bone and ulna, with said hinge pin and said shell forming an elbow implant joint and said stop limiting pivotal movement of said shell.
1 more element
An elbow joint endoprosthesis comprising:
- an anchoring part comprising a shaft adapted to be anchored in an upper arm bone;
- a pivot member connected to said anchoring part by a pivot joint, said pivot member comprising a hinge pin and two spaced condylar shells adapted to bear against a seating surface of the upper arm bone;
- and
- a bearing shell adapted to be connected to an ulna, with said hinge pin and said bearing shell forming an elbow implant joint, said shell having anchorage projections located in the central transverse plane of said bearing shell for anchorage to the ulna, said anchorage projections comprising a stud having a peripheral channel and a tongue directed away from the stud and spaced from the stud.
1 more element
Dependencies are inferred from the claim text.