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US 5,507,825 AGranted
Kit for an artificial joint socket, in particular a hipjoint socket
AssigneeSulzer Medizinaltechnik AG
InventorHeribert Frei
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AssigneeSulzer Medizinaltechnik AG
InventorHeribert Frei
Estimating the term…
A kit for implanting a socket joint implant has an outer cup (1), an inner cup (2) and fasteners (3, 3a) which are fitted to radially project from the outer cup (1). Each fastener includes a bearer plate (17) arranged on a shaft-like supporting part (18) which is able to bear in an anchoring bore (6) in the bone tissue (5), and a head part (20) which is connected detachably to the supporting part (18) and can be screwed tight from the inside of the outer cup (1) into a guide bore (11) of the cup. The supporting part (18) has a diameter (A) which is less than the diameter (d1) of the guide bore (11). The kit is pre-assembled outside the region of implantation and positioned in the region of implantation while the fasteners (3, 3a) are pulled in towards the center of the outer cup (1). The fasteners (3, 3a) are then pushed into the anchoring bores ( 6) and screwed tight to the outer cup (1) with head parts (20). The kit is adaptable to different anatomical conditions and may be employed as a replacement for a part of the pelvis missing in the region of the hip socket.
A kit for building an artificial joint socket comprising a metallic outer cup having threaded guide bores extending at different angles through the cup, an inner cup for insertion into the outer cup, at least one fastener fastened to the outer cup for introduction into an anchoring bore formed in a bone tissue and terminating in a pressure bearing end face, the fastener including a head part in one of the guide bores and being extendable into the guide bore from inside the outer cup, the fastener, including a bearer plate adapted to be placed into the anchoring bore and bear against the end face of the anchoring bore for the transmission of forces between the bearer plate and the end face of the anchoring bore, the bearer plate having a diameter greater than a diameter of the corresponding guide bore, the fastener further including a shaft-like supporting part attached to the bearer plate and having a diameter less than a diameter of the guide bore, and means detachably connecting the supporting part to the heart part.
A method of fastening an artificial joint socket with a fastener having a bearer plate at one end of the fastener and a head portion, the method comprising the steps of
Dependencies are inferred from the claim text.