Anterior posterior headblock

Details Anterior posterior headblock Anterior posterior headblock

1987-01-12

1988-08-23

Burr, Edgar S.

Surgery

Truss

Perineal

128 87B, A61H 102

Patent

active

047653175

ABSTRACT:
Widely adjustable anterior posterior headblock in a halo vest fixation system of graphite and other material for fixation of a head about an orthopedic jacket with respect to the cervical region, such as for spinal trauma. A slotted adjustment carrier member with ball, sockets and clamping screws at each end of the carrier fits over and between pairs of upright rods. Clamping screws and a slot in the carrier member provide for anterior and posterior movement of a saddle and an attached vertically aligned halo ring traction plate to position an attached halo ring. The halo ring traction plate moves vertically in a slot via an independent-acting, internally-captured adjustment screw to provide for vertical traction or distraction as applied to the halo ring. The halo ring rotates pivotally about a pitch axis to provide for flexion or extension adjustment of the halo ring.

REFERENCES:
patent: 678417 (1901-07-01), Muller
patent: 2166229 (1939-07-01), Anderson
patent: 2672146 (1954-03-01), Touson
patent: 2820455 (1958-01-01), Hall
patent: 3957040 (1976-05-01), Calabrese
patent: 4383523 (1983-05-01), Schurman
patent: 4541421 (1985-09-01), Iversen et al.

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