Soft-tissue treatment with negative pressure

Patent metadata

Field	Value
Publication number	US-12178777-B2
Application number	US-201916526792-A
Country	US
Kind code	B2
Filing date	Jul 30, 2019
Priority date	Aug 1, 2018
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

An apparatus for promoting circulation through a subcutaneous lymph vascular network may comprise a first manifold layer, a second manifold layer coupled to the first manifold layer, and a cover layer coupled to the second manifold layer. The first manifold may have a first stiffness, and the second manifold may have a second stiffness greater than the first stiffness. In some embodiments, the apparatus may additionally have a fluid interface configured to fluidly couple at least one of the first manifold layer and the second manifold layer to a fluid conductor through the cover layer. The fluid conductor may be coupled to or configured to be coupled to a source of negative pressure.

First claim

What is claimed is:

1. An apparatus for promoting circulation through a subcutaneous lymph vascular network, the apparatus comprising:
a manifold layer having a first stiffness, the first stiffness is from about 800 gram-force to about 1000 gram-force;
a support layer adjacent to the manifold layer, the support layer comprising one or more apertures, and the support layer having a second stiffness greater than the first stiffness;
a cover adjacent to the support layer; and
a fluid interface configured to fluidly couple at least one of the manifold layer and the support layer to a fluid conductor;
wherein when negative pressure is applied to one or more of the manifold layer and the support layer at least a portion of the apertures are visible through the cover.

2. The apparatus of claim 1 , wherein when negative pressure is applied to one or more of the manifold layer and the support layer at least a portion of the cover is configured to be drawn into the one or more apertures to form one or more indentations.

3. The apparatus of claim 2 , wherein the indentations are visible.

4. The apparatus of claim 1 , wherein the second stiffness is at least 1.3 times greater than the first stiffness.

5. The apparatus of claim 1 , wherein:
the manifold layer has a first thickness; and
the support layer has a second thickness less than the first thickness.

6. The apparatus of claim 1 , wherein the manifold layer comprises open-cell foam.

7. The apparatus of claim 1 , wherein the first stiffness is about 910 gram-force.

8. The apparatus of claim 1 , wherein the second stiffness is from about 800 gram-force to about 3000 gram-force.

9. The apparatus of claim 1 , wherein the second stiffness is from about 800 gram-force to about 2000 gram-force.

10. The apparatus of claim 1 , wherein the second stiffness is from about 1000 gram-force to about 2000 gram-force.

11. The apparatus of claim 1 , wherein the second stiffness is from about 1200 gram-force to about 1500 gram-force.

12. The apparatus of claim 1 , wherein the support layer comprises a closed-cell foam.

13. The apparatus of claim 1 , wherein the support layer comprises neoprene foam.

14. The apparatus of claim 1 , wherein the support layer comprises a knit fabric.

15. The apparatus of claim 1 , wherein the support layer comprises a woven fabric.

16. The apparatus of claim 1 , wherein the support layer comprises a polyvinyl chloride film.

17. The apparatus of claim 1 , wherein the support layer comprises a composite film.

18. The apparatus of claim 1 , wherein the support layer comprises a non-woven fabric.

19. The apparatus of claim 1 , wherein the support layer comprises rubber.

20. An apparatus for promoting circulation through a subcutaneous lymph vascular network, the apparatus comprising:
a manifold layer having a first stiffness, wherein the first stiffness is from about 800 gram-force to about 1000 gram-force;
a support layer adjacent to the manifold layer, the support layer having a second stiffness greater than the first stiffness; and
a fluid interface configured to fluidly couple at least one of the manifold layer and the support layer to a fluid conductor.

21. The apparatus of claim 20 , further comprising a cover adjacent to the support layer, and wherein the support layer comprises one or more apertures.

22. The apparatus of claim 21 , wherein when negative pressure is applied to one or more of the manifold layer and the support layer at least a portion of the apertures are visible through the cover.

23. The apparatus of claim 21 , wherein when negative pressure is applied to one or more of the manifold layer and the support layer at least a portion of the cover is configured to be drawn into the one or more apertures to form one or more indentations.

24. The apparatus of claim 20 , wherein the first stiffness is about 910 gram-force.

25. The apparatus of claim 20 , wherein the second stiffness is from about 800 gram-force to about 3000 gram-force.

26. The apparatus of claim 20 , wherein the second stiffness is from about 800 gram-force to about 2000 gram-force.

27. The apparatus of claim 20 , wherein the second stiffness is from about 1000 gram-force to about 2000 gram-force.

28. The apparatus of claim 20 , wherein the second stiffness is from about 1200 gram-force to about 1500 gram-force.

29. The apparatus of claim 20 , wherein:
the manifold layer has a first thickness; and
the support layer has a second thickness less than the first thickness.

30. The apparatus of claim 20 , wherein the support layer comprises a closed-cell foam.

31. The apparatus of claim 20 , wherein the support layer comprises neoprene foam.

32. The apparatus of claim 20 , wherein the support layer comprises a knit fabric.

33. The apparatus of claim 20 , wherein the support layer comprises a woven fabric.

34. The apparatus of claim 20 , wherein the support layer comprises a polyvinyl chloride film.

35. The apparatus of claim 20 , wherein the support layer comprises a composite film.

36. The apparatus of claim 20 , wherein the support layer comprises rubber.

37. An apparatus for promoting circulation through a subcutaneous lymph vascular network, the apparatus comprising:
a manifold layer having a first stiffness;
a support layer adjacent to the manifold layer, the support layer having a second stiffness greater than the first stiffness, wherein the second stiffness is from about 800 gram-force to about 3000 gram-force; and
a fluid interface configured to fluidly couple at least one of the manifold layer and the support layer to a fluid conductor.

38. The apparatus of claim 37 , further comprising a cover adjacent to the support layer, and wherein the support layer comprises one or more apertures.

39. The apparatus of claim 38 , wherein when negative pressure is applied to one or more of the manifold layer and the support layer at least a portion of the apertures are visible through the cover.

40. The apparatus of claim 38 , wherein when negative pressure is applied to one or more of the manifold layer and the support layer at least a portion of the cover is configured to be drawn into the one or more apertures to form one or more indentations.

41. The apparatus of claim 37 , wherein the second stiffness is from about 800 gram-force to about 2000 gram-force.

42. The apparatus of claim 37 , wherein the second stiffness is from about 1000 gram-force to about 2000 gram-force.

43. The apparatus of claim 37 , wherein the second stiffness is from about 1200 gram-force to about 1500 gram-force.

44. The apparatus of claim 37 , wherein:
the manifold layer has a first thickness; and
the support layer has a second thickness less than the first thickness.

45. The apparatus of claim 37 , wherein the support layer comprises a closed-cell foam.

46. The apparatus of claim 37 , wherein the support layer comprises neoprene foam.

47. The apparatus of claim 37 , wherein the support layer comprises a knit fabric.

48. The appa

Assignees

• Solventum Intellectual Properties Company

Inventors

• Hall Colin John
• Pratt Benjamin Andrew
• Kazala Jr Richard Marvin
• Jahanian Shervin
• Randolph Larry Tab
• Rehbein Jonathan G
• Simmons Tyler H

Classifications

• A61F13/01038

  Flexibility, stretchability or elasticity · CPC title

• A61F13/01029

  made of multiple layers · CPC title

• A61F13/01017

  synthetic, e.g. polymer based · CPC title

• A61F13/05

  specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT] · CPC title

• A61H2209/00

  Devices for avoiding blood stagnation, e.g. Deep Vein Thrombosis [DVT] devices · CPC title