Reduced pressure tissue therapy device

Patent metadata

Field	Value
Publication number	US-11027050-B2
Application number	US-201615755477-A
Country	US
Kind code	B2
Filing date	Aug 16, 2016
Priority date	Sep 1, 2015
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

Disclosed herein are devices and methods for reduced pressure tissue therapy. Some variations of suction devices for reduced pressure tissue therapy comprise a housing, a suction force generating mechanism located within the housing, and a storage module configured to retain tissue exudates. In some variations, the storage module includes a sleeve configured to collect tissue exudates. The sleeve may include a support element to help maintain the lateral structural integrity of the sleeve and/or retain the cross-sectional geometry of the sleeve under negative pressure. In use, the storage module may reduce sanitary and/or biohazard risks by preventing the exudates from contacting the housing and/or suction force generating mechanism. The storage module is configured to be replaced so that the housing and suction force generating mechanism can be used for more than one session.

First claim

What is claimed as new and desired to be protected by Letters Patent of the United States is:

1. A reduced pressure therapy device comprising:
a housing comprising a suction force generating mechanism;
a distal port;
a suction chamber;
a storage module comprising a sleeve including an internal compartment configured to collect exudates through the distal port, wherein the sleeve is configured to provide a barrier between the exudates and the suction chamber, wherein the sleeve has a wall and a support element along the wall configured to resist inward collapse of the wall under negative pressure, and wherein a proximal end wall of the sleeve is attached to the suction force generating mechanism; and
a fluid retention assembly including a pouch positioned within the internal compartment and configured to retain exudates within the storage module.

2. The device of claim 1 , wherein the wall of the sleeve is flexible and the support element comprises a support structure that is more rigid than the flexible wall.

3. The device of claim 2 , wherein the support structure comprises a helical coil.

4. The device of claim 2 , wherein the support structure comprises one or more rings or loops.

5. The device of claim 2 , wherein the support structure comprises wire grid scaffolding.

6. The device of claim 2 , wherein the support structure comprises a mesh or weave.

7. The device of claim 1 , wherein the support element comprises hinges.

8. The device of claim 7 , wherein the hinges comprise living hinges.

9. The device of claim 7 , wherein the hinges comprise mechanical hinges comprising discrete components that are pivotally connected by a connecting structure.

10. The device of claim 9 , wherein the mechanical hinges include engaging structures that lock the hinge in a desired maximum open angle.

11. The device of claim 9 , wherein the mechanical hinges include interfering features that limit the maximum angle to which the hinge can open.

12. The device of claim 1 , wherein the wall of the sleeve comprises a plurality of first pleats, wherein each first pleat is perpendicular to a longitudinal axis of the device and defines a first angle.

13. The device of claim 12 , wherein the support element is located along at least one first pleat.

14. The device of claim 13 , wherein the support element comprises a second material added to the sleeve wall at the first pleat, wherein the second material defines a second pleat having a second angle more acute than the first angle.

15. The device of claim 13 , wherein the support element comprises a second material extending from the first pleat and protruding perpendicularly to a longitudinal axis of the sleeve for a distance between about 0.005 inches and about 0.02 inches.

16. The device of claim 15 , wherein the distance is between about 0.01 inches and about 0.015 inches.

17. The device of claim 2 , wherein the support structure is enclosed within the wall of the sleeve.

18. The device of claim 2 , wherein the support structure is located on an inner surface of the wall of the sleeve.

19. The device of claim 2 , wherein the support structure is located on an outer surface of the wall of the sleeve.

20. The device of claim 2 , wherein the support structure is located on an inner surface and an outer surface of the wall of the sleeve.

21. The device of claim 1 , wherein the sleeve further comprises a distal valve.

22. The device of claim 21 , wherein the distal valve is a one-way valve.

23. The device of claim 1 , wherein the suction force generating mechanism comprises a force member.

24. The device of claim 23 , wherein the force member comprises a constant force spring.

25. The device of claim 23 , wherein the force member comprises a variable force spring.

26. The device of claim 1 , further comprising a sliding assembly translatable along the longitudinal axis of the housing.

27. The device of claim 26 , wherein the sliding assembly is a sliding seal assembly.

28. The device of claim 26 , wherein the sliding assembly is attached to the suction force generating mechanism.

29. The device of claim 26 , wherein the proximal end wall of the sleeve is attached to the sliding assembly by snap-fit, screw-fit, twist-fit, friction-fit, adhesives, hooks and loop engagement, magnetic engagement, clips, and/or clasps.

30. The device of claim 26 , further comprising an activation tool configured to urge the sliding assembly distally along a longitudinal axis of the housing.

31. The device of claim 1 , wherein the sleeve is detachable from the suction force generating mechanism and the distal port.

32. The device of claim 1 , wherein the sleeve wall comprises a film or membrane.

Assignees

• Kci Licensing Inc

Inventors

• Hu Dean
• Wu Kenneth

Classifications

• A61M1/982

  with means for detecting level of collected exudate · CPC title

• A61M1/684

  bellows-type · CPC title

• A61M1/98

  Containers specifically adapted for negative pressure wound therapy · CPC title

• A61M1/602 Primary

  Mechanical means for preventing flexible containers from collapsing when vacuum is applied inside, e.g. stents · CPC title

• A61M1/604

  Bag or liner in a rigid container, with suction applied to both · CPC title