Solutions for bridging and pressure concentration reduction at wound sites

Patent metadata

Field	Value
Publication number	US-9681993-B2
Application number	US-201213490844-A
Country	US
Kind code	B2
Filing date	Jun 7, 2012
Priority date	Jun 7, 2011
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

Disclosed herein are devices, systems and methods for delivering reduced pressure to a load-bearing wound site. The device can include a distal port configured to connect to a wound dressing positioned over the wound site; a proximal port located a distance from the distal port and configured to connect to a reduced pressure source, and a conduit body having an inner channel extending between the distal port and the proximal port. When the distal port is applied to the wound dressing positioned over the wound site the proximal port is positioned at a non-load bearing location remote from the wound dressing. The inner channel has a non-circular profile having a width larger than a height of the conduit body.

First claim

What is claimed as new and desired to be protected is:

1. An elongate conduit structure for providing reduced pressure therapy to a tissue site, the elongate conduit structure comprising:
an upper surface and a lower surface each extending along a longitudinal length of the elongate conduit structure;
a longitudinal passageway extending along the longitudinal length of the elongate conduit structure and between the upper surface and the lower surface;
an inlet opening located in the lower surface;
an outlet opening located in the upper surface;
a support structure defining parallel channels through the longitudinal passageway, wherein each of the parallel channels extends from the inlet opening to the outlet opening, and wherein the support structure comprises one or more elongate ribs coupled to at least one of the upper surface or the lower surface;
a port coupled to the upper surface and in fluid communication with the outlet opening; and
a first tissue protection structure configured to be positioned below the lower surface of the elongate conduit structure.

2. The elongate conduit structure of claim 1 , further comprising:
an adhesive structure coupled to at least one of the lower surface of the elongate conduit structure and the first tissue protection structure; and
a release liner adhered to the adhesive structure, wherein the release liner comprises a release surface in contact with the adhesive structure, and wherein a second tissue protection structure is on an opposite surface from the release surface.

3. The elongate conduit structure of claim 2 , wherein the release liner extends beyond an edge of the adhesive structure.

4. The elongate conduit structure of claim 2 , wherein the first tissue protection structure comprises a different material than the second tissue protection structure.

5. The elongate conduit structure of claim 2 , wherein the first tissue protection structure comprises a foam.

6. The elongate conduit structure of claim 2 , wherein the second tissue protection structure comprises a woven material.

7. The elongate conduit structure of claim 1 , wherein the support structure comprises a foam.

8. The elongate conduit structure of claim 2 , wherein the adhesive structure is attached to the first tissue protection structure.

9. The elongate conduit structure of claim 1 , wherein the inlet opening is located at a distal region of the elongate conduit structure.

10. The elongate conduit structure of claim 9 , wherein the outlet opening is located at a proximal region of the elongate conduit structure.

11. The elongate conduit structure of claim 9 , wherein the outlet opening is located between a proximal region of the elongate conduit structure and the distal region of the elongate conduit structure.

12. The elongate conduit structure of claim 2 , wherein the upper surface and the lower surface are integrally formed.

13. The elongate conduit structure of claim 2 , wherein the upper surface and the lower surface form a seam along an outer perimeter of the elongate conduit structure.

14. The elongate conduit structure of claim 13 , wherein the upper surface comprises a non-planar, vacuum formed polymeric structure, and wherein the lower surface comprises a planar polymeric structure.

15. The elongate conduit structure of claim 2 , wherein the dressing is attached to the elongate conduit structure at the inlet opening.

16. The elongate conduit structure of claim 1 , wherein an edge of the dressing is aligned with an edge of the first tissue protection structure.

17. The elongate conduit structure of claim 1 , wherein the dressing does not overlap with the first tissue protection structure.

18. The elongate conduit structure of claim 1 , wherein the first tissue protection structure comprises a lateral perimeter portion that extends beyond a lateral perimeter of the elongate conduit structure.

19. A method to treat tissue, the method comprising:
attaching at least one wound cover having an elongated conduit to a treatment site, wherein the elongated conduit is pre-coupled between the at least one wound cover and a tube that extends to a vacuum source, the elongated conduit comprising:
an upper surface and a lower surface each extending along a longitudinal length of the elongated conduit,
a longitudinal passageway that extends along the longitudinal length of the elongated conduit and between the upper surface and the lower surface,
an inlet opening located in the lower surface,
an outlet opening located in the upper surface,
a support structure defining parallel channels through the longitudinal passageway, wherein each of the parallel channels extends from the inlet opening to the outlet opening, and wherein the support structure comprises one or more elongate ribs coupled to at least one of the upper surface or the lower surface,
a port coupled to the upper surface and in fluid communication with the outlet opening, and
a first tissue protection structure configured to be positioned below the lower surface of the elongated conduit;

externally compressing the elongated conduit;
attaching the vacuum source to the elongated conduit; and
activating the vacuum source after externally compressing the elongated conduit.

20. The method of claim 19 , further comprising maintaining at least some external compression of the elongated conduit while activating the vacuum source.

21. The elongate conduit structure of claim 1 , further comprising a support configured to maintain fluid communication between the inlet opening and the parallel channels under an external force.

22. The elongate conduit structure of claim 1 , wherein the first tissue protection structure is porous.

23. The elongate conduit structure of claim 2 , wherein the second tissue protection structure is porous.

24. The elongate conduit structure of claim 1 , wherein the support structure maintains the parallel channels in a parallel configuration through the longitudinal passageway.

25. The method of claim 19 , wherein the upper surface and the lower surface are impermeable.

Assignees

• Wu Kenneth
• Ng Darren
• Lee Jennifer
• Hu Dean
• Kci Licensing Inc

Inventors

• Wu Kenneth
• Ng Darren
• Lee Jennifer
• Hu Dean

Classifications

• A61F2013/00536

  for draining or irrigating wounds · CPC title

• A61F2013/00174

  possibility of applying pressure · CPC title

• A61F2013/00412

  for use with needles, tubes or catheters · CPC title

• A61M1/918

  for multiple suction locations · CPC title

• A61M1/913

  having a bridging element for transferring the reduced pressure from the connector to the dressing · CPC title