Spherical kinematic joint

Details Spherical kinematic joint Spherical kinematic joint

A - Human Necessities

61

F

3/104

A61F 2/32 (2006.01) F16C 11/06 (2006.01) A61F 2/00 (2006.01) A61F 2/30 (2006.01) A61F 2/34 (2006.01)

Patent

CA 1185752

ABSTRACT OF THE DISCLOSURE An improved spherical kinematic joint which allows ease and convenience of assembly and disassembly, particularly assembly, by providing a plurality of substantially physically distinct bearing inserts in a sub-assembly such that the bearing inserts are effectively a unitary structure for the purpose of assembly and disassembly but which bearing segments expand easily with low manual force during assembly and disassembly of the various bearing insert embodiments from the head and/or cavity or spherical seat in another joint element or member, such as for example in the prosthetic joint embodiments, an acetabular cup. Further, such ease of assembly and disassembly can be accomplished while retaining great dislocation and separation resistance and can be accomplished in a manner which does not introduce significant axial play.

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