Support for the human spine

• US 5,527,311 A
• Filed: 07/29/1994
• Issued: 06/18/1996
• Est. Priority Date: 11/13/1991
• Status: Expired due to Term

• Current Assignee: Stryker Trauma GmbH Corporation of Republic of Germany
• Original Assignee: Howmedica GmbH
• Inventors: Procter, Philip, Harder, Hans E., Bird, Nicola
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): TUCKER, GUY V
• Application Number:
  US08/282,700
• Time in Patent Office: 690 Days
• Field of Search: 606/61, 606/69, 606/70, 606/71, 606/72, 606/73, 623/17
• US Class Current: 606/280
• CPC Class Codes: A61B 17/7059 Cortical plates A61B17/7007, A61B17/7058 take precedence
• CPC Class Codes: A61B 17/8014 the extension or compression force being caused by interaction of the plate hole and the screws
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence

Abstract

The invention is an elongated plate made of deformable, body-compatible material, which is to be anteriorly attached to at least a pair of adjacent vertebrae. The plate has specially placed holes to receive bone screws to be screwed into the vertebrae.

Claims

1. A spinal support plate for attachment to at least a pair of adjacent vertebrae of the spine, said plate having a longitudinal axis adapted to be parallel to the longitudinal axis of the spine when the plate is attached to adjacent vertebrae, said plate comprising:

at least three rows of three holes each for receiving bone screws of a predetermined diameter, each of said rows aligned along an axis perpendicular to said longitudinal axis of said spinal support plate; and

at least two additional rows of at least two smaller diameter holes each, said holes in said additional rows having a diameter smaller than said predetermined diameter and smaller than the diameter of said holes for receiving said bone screws, said rows aligned along an axis perpendicular to said longitudinal axis of said spinal support plate, said at least two rows of smaller diameter holes located between adjacent rows of said holes for receiving said bone screws.

2. A support plate according to claim 1 wherein one of said screw holes in each row is located substantially along said longitudinal axis, said one of said screw holes in each row being spaced apart at a distance which corresponds substantially to the distance between adjacent vertebrae.

4. A support plate as set forth in claim 1 wherein one of said bone screw receiving holes in each row is located on said longitudinal axis.

3. A support plate as set forth in clam 1 wherein ear-like projections extend from the edges of said plate, said projections including holes, said holes aligned with said axis of said rows of smaller diameter holes.