Orthopedic support pad and method for providing semi-permanent relief zones

• US 5,378,223 A
• Filed: 10/23/1992
• Issued: 01/03/1995
• Est. Priority Date: 10/23/1992
• Status: Expired due to Term

• Current Assignee: Ossur hf
• Original Assignee: Royce Medical Company (Ossur hf)
• Inventors: Grim, Tracy E., Iglesias, Joseph M.
• Primary Examiner(s): PREBILIC, PAUL B
• Application Number:
  US07/965,750
• Time in Patent Office: 802 Days
• Field of Search: 128/362, 128/376, 128/DIG. 20, 602/6, 602/13, 602/23, 602/27, 602/53, 602/60, 602/61, 602/66, 5/453, 5/454, 607/1, 36/91, 36/93
• US Class Current: 602/6
• CPC Class Codes: A43B 5/0407 inflatable
• CPC Class Codes: A43B 7/14 with foot-supporting parts
• CPC Class Codes: A43B 7/1415 characterised by the location under the foot
• CPC Class Codes: A43B 7/20 Ankle-joint supports or holders
• CPC Class Codes: A43B 7/28 Adapting the inner sole or the side of the upper of the shoe to the sole of the foot
• CPC Class Codes: Y10S 128/20 Inflatable splint

Abstract

In an orthopedic support pad with semi-permanent relief zones, an airtight bladder is filled with a material which retains its shape when air is evacuated from the bladder during the formation process. The afflicted areas of an appendage are temporarily covered with padding and the support pad is then conformed to the wearer'"'"'s particular anatomy. When the padding is subsequently removed, areas of pressure relief for the afflicted areas are maintained in the support pad.

Claims

1. A conformable foot pad comprising:

an airtight compliant bladder having a configuration to underlie the sole of the foot of a user;

said airtight bladder containing means for retaining a predetermined configuration following partial evacuation;

one-way valve means coupled to said bladder to facilitate withdrawing air from said bladder so that the bladder will retain its shape, including the upper surface configuration thereof for facing the sole of the foot of the user; and

means for selectively permitting the inflow of air into said bladder to facilitate reconfiguration thereof;

wherein;

said bladder contains resilient particulate material; and

said bladder includes an apertured separating layer of sheet plastic with fine particulate material on one side of said sheet and coarser particulate material on the other side thereof.

2. A method for conforming an orthopedic support pad to provide semi-permanent areas of pressure relief to afflicted areas of an appendage, the method comprising the steps of:

preparing a support pad including a fluid and an airtight bladder containing semi-flexible particles which are freely formable under atmospheric pressure conditions but which retain a conformed configuration when the bladder is evacuated;

applying a temporary padding of material to the afflicted areas of said appendage;

evacuating the fluidic contents of said support pad to alter the shape of the pad to a conformed shape, wherein said shape conforms to that of said appendage as modified by said temporary padding;

maintaining said conformed shape with semi-flexible particles inside said pad;

sealing said support pad to prevent further modification of the fluidic contents of the support pad;

removing said temporary padding from said appendage; and

securing said conformed support pad to said appendage.

3. The method for conforming an orthopedic support pad to provide semi-permanent areas of pressure relief defined in claim 2 wherein said appendage is a human foot.

4. The method for conforming an orthopedic support pad to provide semi-permanent areas of pressure relief as defined in claim 3 wherein the step of evacuating the fluidic contents of the pad is initiated by the intended wearer applying pressure to said pad with said foot.

5. The method for conforming an orthopedic support pad to provide semi-permanent areas of pressure relief defined in claim 2 further comprising the step of using a pumping mechanism to evacuate said fluidic contents.

6. The method for conforming an orthopedic support pad to provide semi-permanent areas of pressure relief defined in claim 2 further including the step of introducing new amounts of said fluid into said support pad to eradicate said conformed shape and return said support pad substantially to its original shape.