Plug-type device for retrieving spinal column under treatment

Details Plug-type device for retrieving spinal column under treatment Plug-type device for retrieving spinal column under treatment

2006-11-14

2006-11-14

Stewart, Alvin J. (Department: 3738)

Surgery

Instruments

Orthopedic instrumentation

C606S057000

Reexamination Certificate

active

07135021

ABSTRACT:
A plug-type spinal retrieving device includes a retrieval rod; a fastening screw assembly including a fastening screw and a C-shaped ring having a convex outer surface; a plug; and a fixation seat having a receiving hole in which the retrieval rod is slidably received, a fastening hole having a concave wall in which the C-shaped ring is rotatably received, and an interconnecting hole through which the receiving hole communicates with the fastening hole. The C-shaped ring is mounted on the fastening screw, so that the fastening screw is grasped by the C-shaped ring, when the C-shaped ring is received in the fastening hole of the fixation seat. The C-shaped ring and the retrieval rod are immobilized in the fastening hole and the receiving hole of the fixation seat by inserting the plug into the interconnecting hole.

REFERENCES:
patent: 6749613 (2004-06-01), Conchy et al.
patent: 2002/0173791 (2002-11-01), Howland
patent: 2006/0036252 (2006-02-01), Baynham et al.
patent: 2006/0058787 (2006-03-01), David

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