Dynamic elbow support

• US 5,100,403 A
• Filed: 06/08/1990
• Issued: 03/31/1992
• Est. Priority Date: 06/08/1990
• Status: Expired due to Term

• Current Assignee: Smith & Nephew Richards Incorporated (Smith & Nephew PLC)
• Original Assignee: Smith & Nephew Richards Incorporated (Smith & Nephew PLC)
• Inventors: Hotchkiss, Robert N., Woodward, Arthur, Hotchkiss, Kenneth W.
• Primary Examiner(s): Bahr, Robert
• Assistant Examiner(s): BAHR, JENNIFER DOYLE
• Application Number:
  US07/535,170
• Time in Patent Office: 662 Days
• Field of Search: 128/25 R, 128/26, 128/77, 128/83, 128/85, 128/49, 128/52, 128/56, 128/67, 606/56, 606/57, 606/58, 606/66, 606/90, 606/105
• US Class Current: 606/56
• CPC Class Codes: A61B 17/62 Ring frames, i.e. devices extending around the bones to be positioned A61B17/6433 , A61B17/66 take precedence
• CPC Class Codes: A61B 17/6425 specially adapted to be fitted across a bone joint

Abstract

A dynamic joint support having proximal and distal support sections and means for rigidly connecting each support section to bone and a pair of hinges connecting each support section to each other and pivoting at the joint to cause movement of the support section and its corresponding attached bone through the movements of flexion and extension. The hinge may be driven in its movement by a gear mechanism which may be disengaged by means of a clutch. The dynamic joint support may also include a distraction mechanism for movement of the bones out of contact in the joint, while allowing for an active range of motion at the joint.

Claims

1. A dynamic support, comprising:

proximal and distal external support sections, one for each skeletal element on opposite sides of a joint;

connecting means for rigidly connecting each support section to a bone on its respective side of the joint, wherein said connecting means attaches to the bone at a distance from the joint and not at the axis of rotation of the joint;

hinge means having an axis for connecting the support sections to each other in the vicinity of the joint so the hinge means will pivot the joint when the skeletal elements move through flexion and extension; and

x-ray transparent means at the pivot point of the hinge means having radio-opaque indicia means for enabling alignment of the axis of the hinge means with the axis of the joint.

2. The dynamic joint support of claim 1, comprising:

adjustment means for adjusting the position and orientation of the hinge relative to the respective support sections and relative to the axis of the joint.

3. The dynamic joint support of claim 1, wherein the hinge means includes a gear means for moving the support sections and consequently their respective skeletal elements through flexion and extensions in response to the application of external force to the gear means.

4. The dynamic joint support of claim 1, further comprising:

distraction means for stably fixing bones of the joint out of contact with each other.

5. A dynamic joint support comprising:

proximal and distal external support sections, one for each skeletal element on opposite sides of a joint;

connecting means for rigidly connecting each support section to a bone on its respective side of the joint, wherein said connecting means attaches to the bone at a distance from the joint and not at the axis of rotation of the joint;

hinge means for connecting the support sections to each other in the vicinity of the joint so the hinge means will pivot the joint when the skeletal elements move through flexion and extension, wherein the hinge means includes a gear means having two gear sections for moving the support sections and consequently their respective skeletal elements through flexion and extension in response to the application of external force to the gear means; and

clutch means connected to said gear means for selectively engaging said gear sections such that the force is transferred between said gear sections to restrict free motion of the skeletal elements and permit controlled extension and flexion of the joint and for selectively disengaging the gear sections to allow the skeletal elements to move freely.