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AssigneeNational University of Ireland, Galway
InventorsGerry CLARKE, Brendan BOLAND, Mark BRUZZI, Amy L. LADD, Arnold-Peter C. WEISS, Filip STOCKMANS
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An implant (30) for a mammalian bone joint (3) for spacing a first bone (2) of the joint from a second bone (1) of the joint while allowing translational movement of the second bone in relation to the first bone is described. The implant comprises (a) a distal part (31) configured for intramedullary engagement with an end of the second bone, (b) a proximal part (34) having a platform (15) configured for non-engaging abutment of an end of the first bone and translational movement thereon, and (c) an articulating coupling (10, 16) provided between the distal and proximal ends allowing controlled articulation of the first and second bones. The bone-abutting platform is shaped to conform to and translate upon the end of the first bone. A kit for assembly to form the implant of the invention, and the use of the implant to treat osteoarthritis in a bone joint, are also described.
An implant (30, 5) for a mammalian first carpometacarpal joint (3) for spacing a trapezium bone (2) of the joint from a first metacarpal bone (1) of the joint while allowing translational movement of the first metacarpal bone in relation to the trapezium bone, the implant comprising (a) a distal part (31, 6) configured for intramedullary engagement with an end of the first metacarpal bone, (b) a proximal part (34) having a curved saddle-shaped platform (15) configured for non-engaging abutment of an end of the trapezium bone and translational movement thereon, and (c) an articulating coupling (10, 16) provided between the distal and proximal parts allowing controlled articulation of the trapezium and first metacarpal bones.
An implant (30, 5) for a mammalian bone joint (3) for spacing a first bone (2) of the joint from a second bone (1) of the joint while allowing translational movement of the second bone in relation to the first bone, the implant comprising (a) a first part (31, 6) configured for intramedullary engagement with an end of the second bone, (b) a second part (34) having a platform (15) configured for non-engaging abutment of an end of the first bone and translational movement thereon, and (c) an articulating coupling (10, 16) provided between the first and second parts allowing controlled articulation of the first and second bones, and in which the bone-abutting platform (15) is shaped to conform to a natural shape of the end of the first bone.
Dependencies are inferred from the claim text.