Orthopedic appliance

• US 4,289,123 A
• Filed: 03/31/1980
• Issued: 09/15/1981
• Est. Priority Date: 03/31/1980
• Status: Expired due to Term

• Current Assignee: Harold K. Dunn
• Original Assignee: Harold K. Dunn
• Inventors: Dunn, Harold K.
• Primary Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US06/135,328
• Time in Patent Office: 533 Days
• Field of Search: 128/84, 128/69, 128/75, 128/92 R, 128/92 A, 128/92 B, 128/92 BC, 128/92 BB, 128/92 D, 128/92 BA, 128/78
• US Class Current: 606/250
• CPC Class Codes: A61B 17/7008 with parts of, or attached to, the longitudinal elements, bearing against an outside of the screw or hook heads, e.g. nuts on threaded rods A61B17/7007 takes precedence
• CPC Class Codes: A61B 17/7041 with single longitudinal rod offset laterally from single row of screws or hooks A61B17/7044 takes precedence
• CPC Class Codes: A61B 17/7044 also having plates, staples or washers bearing on the vertebrae
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61B 90/00 Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges protective face masks A41D13/11; surgeon's or patient's gowns or dresses A41D13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M1/00
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2002/30411 having two threaded end parts connected by a threaded central part with opposite threads at its opposite ends, i.e. for adjusting the distance between both end parts by rotating the central part
• CPC Class Codes: A61F 2002/3055 for adjusting length
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements

Abstract

The present invention in an improved orthopedic appliance is for attachment in supporting engagement to a patient'"'"'s spine, during an anterior surgical procedure thereof. The installed appliance provides for decompression of the contents of the spinal canal and/or is to obtain sufficient fusion mass to provide long-term spinal stability. The appliance incorporates a pair of contoured rocker arm brackets that are each attached to a separated vertebral portions of healthy vertebra, with a damaged or diseased vertebra therebetween. Spacing adjustment and columnar support between the brackets is provided by a single spacing adjustment rod whose ends are threaded oppositely and are turned into appropriately threaded portions of the brackets. A second slide rod is preferably provided that also extends between the brackets and is arranged to slide freely therein but preferably is arranged to accommodate nuts, or the like, turned thereon against the brackets to provide columnar support thereacross.

Claims

1. An improved orthopedic appliance consisting of,

a pair of brackets each contoured on one surface to closely fit to a vertebral body portion of a human vertebra, which brackets include oppositely threaded holes formed therethrough that are aligned when the brackets are properly installed to the vertebral body portions;

means for securing each said bracket to a separate vertebral body portion consisting of, a U-shaped staple that includes means for securing it to a saddle portion of each said bracket such that legs of said staple extend outwardly from said bracket contoured surface, and, means, additional to said staple, for connecting each said bracket to said vertebral body portion; and

a spacing adjustment rod having oppositely threaded ends arranged to turn into said oppositely threaded holes in said brackets.

2. An improved orthopedic appliance as recited in claim 1, wherein the means for securing the staple to the bracket saddle include,

a screw fitted through a staple yoke portion and into said bracket saddle.

3. An improved orthopedic appliance as recited in claim 1, wherein the means for securing the staple to the bracket include,

oppositely facing incline planes secured, respectively, to inner faces of legs of said staple and to opposite surfaces of the bracket saddle such that vertical faces of said incline planes will align and slide over one another when said staple is moved over said saddle to lock said staple to said bracket.

4. An improved orthopedic appliance as recited in claim 1, wherein the means, additional to each staple, for securing said bracket to said vertebral body portion consists of,

a screw fitted through an opening through said bracket into said vertebral body portion.

5. An improved orthopedic appliance as recited in claim 1, further including,

slide holes formed through said brackets that align when said brackets are installed to the vertebral body portions;

and

a slide rod for installation into said slide holes.

6. An improved orthopedic appliance as recited in claim 5, wherein the slide rod is threaded to accommodate lock nuts turned thereon.

7. An improved orthopedic appliance as recited in claim 1, further including,

lock nuts turned on the space adjustment rod.