Bone screw system

Details Bone screw system Bone screw system

1999-06-02

2000-04-11

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 92, A61B 1758

Patent

active

060483431

ABSTRACT:
A bone screw system (100) is provided that includes a cannulated bone screw (110) and an adapter (140) designed to be releasably coupled to the screw (110). The screw (110) has a head (112) with an opening (126) formed therein. A shank portion (114) of screw (110) extends from the head (112) and has a closed end bore (124) formed therein in open communication with the opening (126). The screw (110) has a threaded portion (116) in which a plurality of apertures (122) are formed in a root portion (120) of the thread. The adapter (140) has a distal end (150) adapted for releasable coupling with the head (112) and has a passage (162) extending longitudinally therethrough for open communication with the bore (124) of the screw (110). The adapter (140) further includes a grip portion (154) formed by a plurality of spaced annular ridges (156). The proximal end of adapter (140) has a fitting (142) formed thereon for coupling to a device for dispensing a purchase enhancing composition, through the adapter (140) and bore (124) to the apertures (122).

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patent: 4860513 (1989-08-01), Whitman
patent: 5129901 (1992-07-01), Decoste
patent: 5143498 (1992-09-01), Whitman
patent: 5145301 (1992-09-01), Yamamoto
patent: 5249899 (1993-10-01), Wilson
patent: 5253965 (1993-10-01), Angel
patent: 5483781 (1996-01-01), Ernst et al.
patent: 5725581 (1998-03-01), Branemark
patent: 5788702 (1998-08-01), Draenert

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