Patent ID: 8388665

Claim:
A medical implant for use in the human body, comprising: a fixing element to be fastened to a bone, said fixing element having at least one bore; at least one bone screw which can be passed through said at least one bore of said fixing element, and which can be screwed into said bone, said bone screw having a shaft and a head; at least one bushing configured to be arranged in said at least one bore, through which said bone screw can be passed for screwing said bone screw into said bone, said bushing being able to swivel in several spacial directions when seated in said bore, said bushing further defining an opening therethrough, the opening having a first end and forming a seat extending through most of the bushing from the first end toward a second end of the opening for at least partially receiving at least a partial surface of said head of said bone screw, the seat comprising a distinct seat bottom at the second end of the opening; wherein an inner surface of said bore and an outer surface of said bushing are formed to be about spherically curved, such that a region of largest diameter of said inner surface and said outer surface is situated between an upper edge and a lower edge of said bore, wherein said bushing is loss-proof pressed in said bore; wherein an outer peripheral surface of the bone screw and an inner peripheral surface of the bushing form a threadless connection and substantially interlock with each other only at or only adjacent the seat bottom of the bushing to stop the head from passing completely through the bushing wherein the size of the opening adjacent the first end is larger than the size of the opening at the seat bottom.