Coupled rod, anterior vertebral body screw, and staple assembly

Details Coupled rod, anterior vertebral body screw, and staple assembly Coupled rod, anterior vertebral body screw, and staple assembly

1998-10-19

1999-07-20

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 61, 606 69, 606 72, 606 73, A61B 1758

Patent

active

059250470

ABSTRACT:
A rod, screw, and staple assembly for use in conjunction with anterior or lateral spinal rod implant apparatus includes a screw having a vertebral body screw which has a shaft which is insertable into a vertebral bone and a head portion which includes a rod receiving channel and a radially extending flange. The vertebral body staple includes a flat portion which has a hole through it. The hole has a rim which is upwardly extending and a concave recess formed in the underside of the flat portion around the hole. The staple also includes several barbs which independently hold the staple to the bone surface to which it is to be affixed. The screw is first inserted into the vertebral bone, and then the staple is mounted over the head portion of the screw, such that the head extends above the annular rim. The rod is then inserted into the rod receiving channel and seats against the uppermost surface of the annular rim. The application of a top locking nut onto the head of the screw causes the rod to compress against the staple, the barbs of which are driven into the vertebral bone, and the staple is further compression locked to the screw.

REFERENCES:
patent: 5415659 (1995-05-01), Lee et al.
patent: 5620443 (1997-04-01), Gertzbein et al.
patent: 5662652 (1997-09-01), Schafer et al.
patent: 5690629 (1997-11-01), Asher et al.
patent: 5713898 (1998-02-01), Stucker et al.
patent: 5810816 (1998-09-01), Roussouly et al.

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