Orthopedic cushion

• US 5,865,166 A
• Filed: 02/02/1998
• Issued: 02/02/1999
• Est. Priority Date: 02/02/1998
• Status: Expired due to Fees

• Current Assignee: DePuy Orthopaedics Incorporated (Johnson & Johnson)
• Original Assignee: Johnson and Johnson Professional Inc (Johnson & Johnson)
• Inventors: Fitzpatrick, Brian, Lancaster, Ronald, Pekar, Robert W.
• Primary Examiner(s): DVORAK, LINDA C
• Application Number:
  US09/017,351
• Time in Patent Office: 365 Days
• Field of Search: 602/5, 602/13, 602/16, 602/26, 128/112.1, 128/113.1, 128/117.1, 128/118.1, 607/108, 607/114, 5/621-624, 5/636, 5/644, 5/645, 5/646, 5/648
• US Class Current: 128/117.1
• CPC Class Codes: A61F 2005/0174 laterally placed
• CPC Class Codes: A61F 5/0123 for the knees A61F5/0106 takes precedence
• CPC Class Codes: A61F 5/34 Pressure pads filled with air or liquid valves specially adapted for medical use A61M39/00; connection of valves to inflatable elastic bodies B60C29/00; valves per se F16K

Abstract

A cushion or pad for orthopedic applications is disclosed. The cushion or pad comprises a bladder filled with a combination of spherical objects in a lubricant and an inflatable air bladder. The inflation of the air bladder is used to properly position an orthesis on a patient.

Claims

1. ) A protective pad comprising an air filled first bladder having an air impervious sealed outer periphery, a second bladder having a sealed outer periphery, said second bladder containing a composite mixture of spherical objects and a lubricant, said first bladder being attached to said second bladder along an attachment line spaced inwardly toward the center of the pad from the outer periphery of the first and second bladder, to maintain a transverse space between the outer periphery of the first bladder and the outer periphery of the second bladder when the first bladder is inflated with air.

2. ) The protective pad of claim 1 in which the spherical objects have a diameter of between 10 and 200 microns.

3. ) The protective pad of claim 1 in which the first bladder comprises two superimposed sheets of a thermoplastic material of substantially the same dimensions sealed together at their outer periphery.

4. ) The protective pad of claim 1 in which the second bladder comprises two superimposed sheets of thermoplastic material of substantially the same dimensions sealed together at their outer periphery.

5. ) The protective pad of claim 1 in which the sheets of thermoplastic material of each bladder are sealed together along a second seal line spaced inwardly toward the center of the pad from the circumferential line of attachment of the bladders to each other.

6. ) The protective pad of claim 1 further comprising an air pump and an air release valve connected to said first bladder to allow the air pressure in said first bladder to be adjusted.