Slipper with an inflatable foot pump

• US 5,354,260 A
• Filed: 05/13/1993
• Issued: 10/11/1994
• Est. Priority Date: 05/13/1993
• Status: Expired due to Term

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Novamedix Limited (Orthofix Medical Inc.)
• Inventors: Cook, Gordon J.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Mollo, Jeanne M.
• Application Number:
  US08/062,437
• Time in Patent Office: 516 Days
• Field of Search: 128/24 R, 128/64, 128/DIG. 20, 128/53, 128/60, 128/61, 602/13, 602/27, 602/65, 36/29, 36/148, 36/153
• US Class Current: 602/13
• CPC Class Codes: A61F 5/0111 for the feet or ankles
• CPC Class Codes: A61H 9/0078 with intermittent or alternately inflated bladders or cuffs mattresses for preventing bed-sores with alternated pressurized chambers A61G7/05776
• CPC Class Codes: Y10S 128/20 Inflatable splint

Abstract

A one-piece slipper construction, into which an inflatable foot-pump bag or bladder is permanently integrated and wherein a thin reinforcement panel is fully contained and located within a flat-foldable wrap, for selective completion of the circumferential tie that is needed for assurance of stimulated foot-pump action. In the preferred embodiment, the wrap is so further devised as to provide a flexibly reinforced, non-stretch backing reference for a laterally extending portion of the inflatable bag, for active stimulation of the adjacent dorsi-medial region, where further blood accumulates as part of the pool from which venous return flow can be driven.

Claims

1. A medical appliance, comprising an elongate generally rectangular and flexible wrap having between upper and lower surfaces a length dimension (A) which is approximately twice its width dimension (B), wherein said width dimension is adapted to approximate but extend short of the length dimension of a human foot that is to be subjected to foot-pump therapy for enhancement of venous and arterial flow;

a relatively stiff reinforcement panel that is adapted to be sufficiently elongate to lap the span between the ball and heel of the foot, securing means retaining said relatively stiff reinforcement panel in assembly with said wrap at the lower surface of said wrap and at a location that is generally central with respect to said length dimension (A), with the elongate direction of said reinforcement panel transverse to said length dimension (A);

an inflatable bladder comprising two peripherally sealed panels of impervious flexible plastic material, said bladder being secured to the upper surface of said wrap at least in substantial register with said reinforcement panel and said bladder being adaptively shaped for active force application to the plantar region substantially only between the ball and heel of the foot;

said securing means including a flexible reinforcing panel of tightly woven essentially non-stretch fabric adhered to said relatively stiff panel and having a perimeter which overlaps said relatively stiff panel and which has at least lapping conformance to the periphery of said bladder, said flexible reinforcement panel having peripherally stitched retention to said wrap in substantial conformance with the periphery of said bladder;

said wrap having laterally extending remainder portions with means for removably securing the same in lapped circumferentially tied relation to each other over the dorsi-medial region of a foot that has been placed in register with said bladder and said reinforcement panel; and

an elongate heel strap connected to said wrap, said strap extending from one to the exclusion of the other of said remainder portions and from one to the exclusion of the other of the elongate sides of said wrap and generally parallel to but laterally offset from alignment with said reinforcement panel;

whereby when said wrap has been circumferentially tied around the foot, said strap may be secured around the back of the heel to the other of the lateral remainder portions of said wrap.

2. The medical appliance of claim 1, which said strap is an integral formation of said wrap.

3. The medical appliance of claim 1, in which said wrap comprises first and second laminated plies of woven fabric respectively defining said upper and lower surfaces.

4. The medical appliance of claim 3, in which said wrap further comprises a ply of compliant foamed material between said first and second plies.

5. The medical appliance of claim 4, in which said plies are peripherally continuously stitched together.

6. The medical appliance of claim 3, in which the seal of said flexible plastic panels defines a peripherally continuous bladder-sealing rim of substantially constant width, said bladder being secured to said wrap by a peripheral succession of stitching which is limited to stitched piercing of plastic bladder material solely within said rim.

7. The medical appliance of claim 1, in which the sealed panels of said bladder are not only configured to lap the longitudinal plantar region between the ball and heel of the foot but are further configured to define an integrally formed dorsi-medial area which extends transversely from the lapped plantar region of the bladder, the dorsi-medial area of the said bladder being within and fully lapped by one of the lateral remainder portions of said wrap.

8. The medical appliance of claim 6, in which said flexible reinforcement panel additionally has peripherally stitched retention to said bladder-sealing rim.

9. The medical appliance of claim 8, in which said bladder has an externally accessible and sealed flexible-tube connection through one of the plastic bladder panels near an edge portion of the dorsi-medial area of the bladder, and in which external access of said tube is via a tube-locating aperture in said wrap.

10. The medical appliance of claim 4, in which the sealed panels of said bladder are not only configured to lap the plantar region between the ball and heel of the foot but are further configured to define an integrally formed dorsi-medial area which extends transversely from the lapped plantar region of the bladder, the dorsi-medial area of the bladder being within and fully lapped by one of the lateral remainder portions of said wrap, the seal of said bladder panels defining a peripherally continuous sealing rim of substantially constant width enclosing both the plantar and dorsi-medial areas of the bladder, said bladder being secured to said wrap by a peripheral succession of stitching which is limited to stitched piercing of plastic-bladder material solely within said rim.

11. The medical appliance of claim 10, wherein said flexible reinforcement panel provides a peripherally continuous rim of panel reinforcement outwardly of the periphery of said bladder and said peripheral stitching is limited to said rim of panel reinforcement.

12. The medical appliance of claim 11, in which the rim of said bladder comprises spaced inner and outer bead formations, said stitching lapping the outer to the exclusion of the inner one of said bead formations.

13. The medical appliance of claim 1, in which touch-and-close fastening means are carried at outer longitudinal limits of said wrap and of said strap, for selective retention of an installed application of said appliance to a foot.