Anti-embolism stocking device

• US 6,123,681 A
• Filed: 03/31/1999
• Issued: 09/26/2000
• Est. Priority Date: 03/31/1998
• Status: Expired due to Fees

• Current Assignee: GMP/Vascular, Inc.
• Original Assignee: Global Vascular Concepts, Inc.
• Inventors: Brown, Charles L. III
• Primary Examiner(s): Lee, Kim M.
• Application Number:
  US09/282,647
• Time in Patent Office: 545 Days
• Field of Search: 623/3, 600/16, 600/490, 600/499, 607/3, 607/48, 607/49, 607/149, 607/152, 606/201, 606/202, 606/203, 128/DIG. 20, 601/149, 601/150, 601/151, 601/15, 601/18, 601/20, 601/21, 601/84, 601/152, 2/239, 2/240, 2/409, 2/242, 223/112
• US Class Current: 602/75
• CPC Class Codes: A61F 13/085 Openable readjustable
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 23/02 with electric or magnetic drive
• CPC Class Codes: A61H 23/0245 with ultrasonic transducers, e.g. piezoelectric
• CPC Class Codes: A61L 15/24 Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61L 15/26 Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61L 15/42 Use of materials characterised by their function or physical properties liquid bandages A61L26/00

Abstract

An anti-embolism stocking used to inhibit the development of thrombophlebitis. The present invention is directed to a system and method for applying compressive forces to parts of the body to stimulate fluid flow through the parts of the body. In particular the present invention relates to a stocking that is capable of being placed on a portion of the body and then having a stimulus applied thereto to stimulate blood flow within the region of the body upon which the stocking is placed. The stocking includes polymer materials which, when a selected stimulus is applied thereto, causes constriction of the polymer, thereby causing the compressive forces. The stocking may be designed such that the compressive forces may be generated sequentially along the length of the stocking to gradually stimulate fluid flow, such as blood, to and from the preselected body portion.

Claims

1. An anti-embolism stocking device comprising:

a stocking capable of being wrapped around a portion of a body;

a plurality of segmented polymer strips arranged in a preselected orientation along the stocking; and

means for receiving an electrical stimulus such that when the stimulus is applied to each of the polymer strips in a sequential order, the polymer strips constrict, thereby causing separate, segmental compression to be exerted upon the portion of the body.

2. The stocking device of claim 1, further comprising fastening means for securing the stocking around the portion of the body.

3. The stocking device of claim 2, wherein the fastening means are selected from straps, belts, buttons, snaps, or hook-and-loop fasteners.

4. The stocking device of claim 1, wherein the stocking comprises a tubular stocking which is capable of being placed on a limb of a body.

5. The stocking of claim 1, wherein the means for receiving comprises a plurality of wires connected to each of the polymer strips respectively and also connected to an electrical power source to provide an electrical stimulus individually to the polymer strips to cause the polymer strips to constrict.

6. The stocking device of claim 1, wherein the polymer strips are arranged circumferentially along the length of the stocking.

7. The stocking device of claim 1, wherein the polymer strips are arranged longitudinally along the length of the stocking.

8. The stocking of claim 1, wherein the stimulus may be applied to the polymer strip segments in a sequential order to stimulated fluid flow through the portion of the body.

9. The stocking device of claim 1, wherein the polymer strips are selected from the group consisting of:

crosslinked polyacrylamide gels;

polyvinyl alcohol/polyacrylic acid (PVA/PAA) gels;

polyacrylamide gels;

poly(sodium acrylate) gels;

poly(2-acrylamide-2-methylpropane)sulfonic gels;

polymethacrylate acid and Ca²⁺ gels;

poly(3-alkyl-thiophene gels;

silicone gels with poly-methacrylic acid cobalt (II) salt particles;

silicone gels with lightly doped poly-p-phenylene particles; and

crosslinked PVA hydrogels with Fe₃ O₄ particles.

10. A system for applying compressive forces to a portion of a body comprising:

a stocking capable of being wrapped around the portion of a body;

a plurality of segmented polymer strips arranged in a preselected orientation along the stocking; and

means for applying an electrical stimulus to each of the polymer strips in a segmental order to cause the strips to constrict thereby causing separate, segmental compression to be exerted upon the portion of the body.

11. The system of claim 10, further comprising fastening means for securing the stocking around the portion of the body.

12. The system of claim 10, wherein the stocking comprises a tubular stocking which is capable of being placed on a limb of a body.

13. The system of claim 10, wherein the means for applying a stimulus comprise a plurality of wires connected to each of the polymer strips respectively and also connected to an electrical power source to provide an electrical stimulus individually to the polymer strips to cause the polymer strips to constrict.

14. The system of claim 10, wherein the polymer strips are arranged circumferentially along the length of the stocking.

15. The system of claim 10, wherein the polymer strips are arranged longitudinally along the length of the stocking.

16. The system of claim 10, wherein the stimulus may be applied to the polymer strip segments in a sequential order to stimulate fluid flow through the portion of the body.

17. The stocking device of claim 10, wherein the polymer strips are selected from the group consisting of:

crosslinked polyacrylamide gels;

polyvinyl alcohol/polyacrylic acid (PVA/PAA) gels;

polyacrylamide gels;

poly(sodium acrylate) gels;

poly(2-acrylamide-2-methylpropane)sulfonic gels;

poly methacrylate acid and Ca²⁺ gels;

poly(3-alkyl-thiophene gels;

silicone gels with poly-methacrylic acid cobalt (II) salt particles;

silicone gels with lightly doped poly-p-phenylene particles; and

crosslinked PVA hydrogels with Fe₃ O₄ particles.

18. A method for applying compressive forces to a portion of a body, comprising the steps of:

surrounding the portion of the body with an anti-embolism stocking; and

applying an electrical stimulus to the stocking to cause the stocking to apply the compressive force to the portion of the body;

wherein the anti-embolism stocking comprises;

a stocking capable of being wrapped around the portion of a body;

a plurality of segmented polymer strips arranged in a preselected orientation along the stocking; and

means for applying a stimulus to each of the polymer strips in a sequential order to cause the strips to constrict thereby causing separate, segmental compressing to be extended upon the portion of the body.

19. The method of claim 18, further comprising fastening means for securing the stocking around the portion of the body.

20. The method of claim 19, wherein the stocking comprises a tubular stocking which is capable of being placed on a limb of a body.

21. The method of claim 19, wherein the electrical stimulus is applied to each of the polymer strips individually using a plurality of wires connected to each the polymer strips individually using a plurality of wires connected to each of the polymer strips respectively and also connected to an electrical power source to provide electrical stimulus individually to the polymer strips to cause the polymer strips to constrict.

22. The method of claim 19, wherein the polymer strips are arranged circumferentially along the length of the stocking.

23. The method of claim 19, wherein the polymer strips are arranged longitudinally along the length of the stocking.

24. The method of claim 19, wherein the polymer strips stimulate fluid flow through the portion of the body.

25. The method of claim 19, wherein the polymer strips are selected from the group consisting of:

crosslinked polyacrylamide gels;

polyvinyl alcohol/polyacrylic acid (PVA/PAA) gels;

polyacrylamide gels;

poly(sodium acrylate) gels;

poly(2-acrylamide-2-methylpropane)sulfonic gels;

poly methacrylate acid and Ca²⁺ gels;

poly(3-alkyl-thiophene gels;

silicone gels with poly-methacrylic acid cobalt (II) salt particles;

silicone gels with lightly doped poly-p-phenylene particles; and

crosslinked PVA hydrogels with Fe₃ O₄ particles.