Implant for an osteosynthesis device, particular for the spine

Details Implant for an osteosynthesis device, particular for the spine Implant for an osteosynthesis device, particular for the spine

1993-09-23

1995-01-31

Shay, Randy C.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

606 61, 606 73, A61F 244

Patent

active

053855833

ABSTRACT:
The implant comprises a part (2) for anchorage in the bone and a body (3) for fixing on a rod (4), the body comprising two lateral branches (5) defining a passageway (6) which is open on each side of the body for receiving the rod, and a screw-threaded plug (8) adapted to be screwed between the branches; a strip (14), interposed between the plug and the rod, is fixed to a ring (15) with which it constitutes a pellet (16). The strip (14) is curved and defines a concave surface (14a) adapted to be applied against the surface of the rod. The curvature of the strip (14) permits clamping the rod (4) in position with a relatively small clamping pressure in that the forces are distributed, which improves resistance to alternating bending of the rod in the body (3) and resistance to fatigue.

REFERENCES:
patent: 5019078 (1991-05-01), Perren et al.
patent: 5076955 (1991-11-01), Cotrel

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