Reduced-pressure, multi-orientation, liquid-collection canister

Patent metadata

Field	Value
Publication number	US-12138379-B2
Application number	US-202117501615-A
Country	US
Kind code	B2
Filing date	Oct 14, 2021
Priority date	Dec 23, 2009
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

A liquid-collection canister includes a liquid collection chamber defined by at least one wall and a first and second gas-communication pathway formed within the at least one wall. A first aperture is positioned between the first gas-communication pathway and the liquid collection chamber to allow gaseous communication between the liquid collection chamber and the first gas-communication pathway. A second aperture is positioned between the second gas-communication pathway and the liquid collection chamber to allow gaseous communication between the liquid collection chamber and the second gas-communication pathway. A first and a second liquid-air separator are positioned over the first aperture and the second aperture, respectively, to substantially prevent liquid passing through the first and second apertures.

First claim

We claim:

1. A liquid-collection canister for collecting liquid from a tissue site to which reduced pressure treatment is applied, the canister comprising:
a plurality of walls defining a liquid collection chamber configured to contact the liquid from the tissue site;
a first fluid pathway formed within a first wall of the plurality of walls;
a second fluid pathway formed within a second wall of the plurality of walls;
a first aperture disposed in the first wall and fluidly coupling the first fluid pathway and the liquid collection chamber; and
a second aperture disposed in the second wall and fluidly coupling the second fluid pathway and the liquid collection chamber.

2. The liquid-collection canister of claim 1 , further comprising:
a first liquid-air separator positioned over the first aperture to substantially prevent liquid passing through the first aperture; and
a second liquid-air separator positioned over the second aperture to substantially prevent liquid passing through the second aperture.

3. The liquid-collection canister of claim 2 , further comprising:
a third aperture disposed in the first wall to fluidly connect the first fluid pathway and the liquid collection chamber;
a fourth aperture disposed in the second wall to fluidly connect the second fluid pathway and the liquid collection chamber;
a third liquid-air separator positioned to substantially prevent liquid from the liquid collection chamber from entering the first fluid pathway through the third aperture of the first wall; and
a fourth liquid-air separator positioned to substantially prevent liquid from the liquid collection chamber from entering the second fluid pathway through the fourth aperture of the second wall.

4. The liquid-collection canister of claim 3 , wherein:
the first and third liquid-air separators are coplanar; and
the second and fourth liquid-air separators are coplanar.

5. The liquid-collection canister of claim 2 , wherein the first liquid-air separator and the second liquid-air separator are hydrophobic.

6. The liquid-collection canister of claim 2 , wherein the first liquid-air separator and the second liquid-air separator are oleophobic.

7. The liquid-collection canister of claim 1 , wherein:
the first aperture is one of a plurality of apertures covered by a first liquid-air separator; and
the second aperture is one of a plurality of apertures covered by a second liquid-air separator.

8. The liquid-collection canister of claim 1 , wherein the first wall is opposite the second wall.

9. The liquid-collection canister of claim 1 , wherein the first wall is adjacent the second wall.

10. The liquid-collection canister of claim 1 , wherein the canister further comprises:
a manifold chamber fluidly connected to the first fluid pathway and the second fluid pathway; and
a reduced pressure port fluidly connected to the manifold chamber.

11. The liquid-collection canister of claim 1 , further comprising an absorbent pad disposed within the liquid collection chamber.

12. The liquid-collection canister of claim 11 , wherein the absorbent pad comprises cellulose and sodium polyacrylate.

13. The liquid-collection canister of claim 12 , wherein the cellulose and sodium polyacrylate are contained within a non-woven polypropylene pouch.

14. The liquid-collection canister of claim 1 , wherein the first fluid pathway extends across substantially an entire width and length of the first wall.

15. The liquid-collection canister of claim 1 , wherein the second fluid pathway extends across substantially an entire width and length of the second wall.

16. The liquid-collection canister of claim 1 , wherein:
the first fluid pathway is integral with the first wall; and
the second fluid pathway is integral with the second wall.

Assignees

• Solventum Intellectual Properties Company

Inventors

• Bendele Kevin W
• Smith Kenneth R

Classifications

• A61M1/98

  Containers specifically adapted for negative pressure wound therapy · CPC title

• A61M1/92

  with liquid supply means · CPC title

• A61M1/60

  Containers for suction drainage, adapted to be used with an external suction source (containers not adapted for subjection to vacuum A61M1/69) · CPC title

• A61M2205/7536

  allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes · CPC title

• A61M2205/21

  insensitive to tilting or inclination, e.g. spill-over prevention · CPC title