The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1988
Filed:
Jan. 12, 1987
William J Eastman, St. Louis Park, MN (US);
Alfred A Iversen, Waqzata, MN (US);
PMT Corporation, Chanhassen, MN (US);
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.