Solutions for bridging and pressure concentration reduction at wound sites

Patent metadata

Field	Value
Publication number	US-10660799-B2
Application number	US-201715597712-A
Country	US
Kind code	B2
Filing date	May 17, 2017
Priority date	Jun 7, 2011
Publication date	May 26, 2020
Grant date	May 26, 2020

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. A low-profile device for delivering reduced pressure to a load-bearing wound site, comprising:
a distal port configured to connect to a wound dressing positioned over the load-bearing wound site;
a proximal port located a distance from the distal port and configured to connect to a reduced pressure source, wherein when the distal port is applied to the wound dressing positioned over the load-bearing wound site, the proximal port is configured to be positioned at a non-load bearing location remote from the wound dressing;
a conduit body comprising an inner channel extending between the distal port and the proximal port, wherein the inner channel has a non-circular profile having a width larger than a height of the conduit body;
a padding material located on an exterior surface of the conduit body;
a low-tack adhesive located on at least a portion of the padding material and configured to be positioned between the conduit body and a patient's skin; and
a release liner releasably adhered to the low-tack adhesive, wherein the release liner comprises a porous or padded material configured to contact the patient's skin.

2. The device of claim 1 , further comprising a sealing layer comprising an adhesive lower surface configured to be adhered to the load-bearing wound site.

3. The device of claim 2 , wherein the adhesive lower surface comprises a material configured to absorb moisture and to maintain skin health.

4. The device of claim 1 , wherein the low-tack adhesive of the conduit body is configured to prevent movement of the conduit body relative to the patient's skin if the release liner is removed.

5. The device of claim 2 , wherein a junction between the low-tack adhesive of the conduit body and the adhesive lower surface of the sealing layer comprises a surface without an adhesive configured to prevent peel propagation of the conduit body to the sealing layer.

6. The device of claim 2 , wherein a distal region of the conduit body surrounding the distal port is coupled to an upper surface of the sealing layer.

7. The device of claim 6 , wherein the distal region of the conduit body is permanently coupled to the upper surface.

8. The device of claim 1 , wherein the conduit body comprises one or more support structures protruding into the channel.

9. The device of claim 8 , wherein the one or more support structures are configured to mitigate a collapse of the channel upon application of external pressure received by the conduit body.

10. The device of claim 8 , wherein the one or more support structures comprise elongate ribs coupled to an inner wall of the conduit body.

11. The device of claim 8 , wherein the conduit body has a multi-layer construction comprising the one or more support structures sandwiched between an upper cover and a lower base.

12. The device of claim 11 , wherein the one or more support structures have a porosity sufficient to allow a delivery of reduced pressure to the load-bearing wound site and a flow of fluid from the load-bearing wound site through the inner channel.

13. The device of claim 11 , wherein the support structure is selected from the group consisting of a mesh structure, a synthetic textile, a foam, a fabric, a non-woven fabric, silicone, urethane, cotton, and gauze.

14. The device of claim 8 , wherein the conduit body has a first durometer and the one or more support structures have a second durometer.

15. The device of claim 14 , wherein the first durometer is less than the second durometer.

16. The device of claim 14 , wherein the first durometer is more than the second durometer.

17. The device of claim 8 , wherein the one or more support structures are arranged adjacent to the distal port to evenly distribute loads and maintain patency of the distal port upon application of external pressure received by the distal port.

18. The device of claim 1 , wherein the distance of the proximal port from the distal port is a range of about 2 inches to about 12 inches.

19. The device of claim 1 , further comprising a pressure indicator configured to indicate pressure delivered locally to the load-bearing wound site.

20. The device of claim 1 , further comprising a contact surface positioned under the conduit body.

Assignees

• Kci Licensing Inc

Inventors

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

Classifications

• A61F2013/00536

  for draining or irrigating wounds · CPC title

• A61F2013/00412

  for use with needles, tubes or catheters · CPC title

• A61F2013/00174

  possibility of applying pressure · CPC title

• A61M1/0086

  Human Necessities · mapped topic

• A61M1/0027

  Human Necessities · mapped topic