Reduced-Pressure, Multi-Orientation, Liquid-Collection Canister

Patent metadata

Field	Value
Publication number	US-2018028727-A1
Application number	US-201715729446-A
Country	US
Kind code	A1
Filing date	Oct 10, 2017
Priority date	Dec 23, 2009
Publication date	Feb 1, 2018
Grant date	—

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 liquid-collection canister comprising:
a liquid collection chamber defined by at least one wall; a first gas-communication pathway at least partially defined by a first portion of the at least one wall; a second gas-communication pathway at least partially defined by a second portion of the at least one wall; a first aperture 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 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 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.

2 . The liquid-collection canister of claim 1 , wherein:
the first gas-communication pathway is formed within the at least one wall; and the second gas-communication pathway is formed within the at least one wall.

3 . The liquid-collection canister of claim 1 , wherein:
the at least one wall includes a first wall and the first gas-communication pathway is formed within the first wall; and the at least one wall includes a second wall and the second gas-communication pathway is formed within the second wall.

4 . The liquid-collection canister of claim 3 , wherein the first wall is opposite the second wall.

5 . The liquid-collection canister of claim 3 , wherein the first wall is adjacent the second wall.

6 . The liquid-collection canister of claim 1 , wherein the at least one wall is cylindrically shaped.

7 . The liquid-collection canister of claim 1 , wherein:
the first gas-communication pathway is a first recess in the at least one wall covered by a first cover; and the second gas-communication pathway is a second recess in the at least one wall covered by a second cover.

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

9 . The liquid-collection canister of claim 1 , wherein at least one of the first liquid-air separator or the second liquid-air separator is hydrophobic.

10 . The liquid-collection canister of claim 1 , wherein at least one of the first liquid-air separator or the second liquid-air separator is oleophobic.

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 . A liquid-collection canister for collecting liquid from a tissue site to which reduced pressure treatment is applied, the liquid-collection canister comprising:
a plurality of walls forming a liquid collection chamber; a gas-communication pathway at least partially defined by a portion of a first wall and a portion of a second wall of the plurality of walls; a first aperture positioned in the first wall between the gas-communication pathway and the liquid collection chamber; a second aperture positioned in the second wall between the gas-communication pathway and the liquid collection chamber; and a liquid-air separator covering each of the first and second apertures.

15 . The liquid-collection canister of claim 14 , wherein the gas-communication pathway is formed within the first wall and the second wall.

16 . The liquid-collection canister of claim 14 , wherein the first wall is opposite the second wall.

17 . The liquid-collection canister of claim 14 , wherein the first wall is adjacent the second wall.

18 . The liquid-collection canister of claim 14 , wherein the gas-communication pathway is a recess in the first and second wall covered by at least one cover.

19 . The liquid-collection canister of claim 14 , wherein the canister further comprises:
a manifold chamber fluidly connected to the gas-communication pathway; and a reduced pressure port fluidly connected to the manifold chamber.

20 . The liquid-collection canister of claim 14 , wherein the liquid-air separator comprises hydrophobic filter elements.

21 . The liquid-collection canister of claim 14 , wherein the liquid-air separator comprises oleophobic filter elements.

22 . The liquid-collection canister of claim 14 further comprising an absorbent pad disposed within the liquid collection chamber.

23 . The liquid-collection canister of claim 22 , wherein the absorbent pad comprises cellulose and sodium polyacrylate.

24 . The liquid-collection canister of claim 23 , wherein the cellulose and sodium polyacrylate are contained within a non-woven polypropylene pouch.

25 . A liquid-collection canister for collecting liquid from a tissue site to which reduced pressure treatment is applied, the liquid-collection canister comprising:
a plurality of walls forming a liquid collection chamber, each wall having an inner surface and an outer surface; a first wall of the plurality of walls having a first recess formed in the outer surface of the first wall; a second wall of the plurality of walls having a second recess formed in the outer surface of the second wall; a first cover disposed over the first recess to form a first space; a second cover disposed over the second recess to form a second space; a first aperture disposed in the first wall to fluidly connect the first space and the liquid collection chamber; a second aperture disposed in the second wall to fluidly connect the second space and the liquid collection chamber; a first liquid-air separator positioned to substantially prevent liquid from the liquid collection chamber from entering the first space through the first aperture of the first wall; a second liquid-air separator positioned to substantially prevent liquid from the liquid collection chamber from entering the second space through the second aperture of the second wall; and a reduced pressure port fluidly connected to the first space and the second space.

26 . The liquid-collection canister of claim 25 , wherein the first wall is opposite the second wall.

27 . The liquid-collection canister of claim 25 , wherein the first wall is adjacent the second wall.

28 . The liquid-collection canister of claim 25 , wherein at least one of the first liquid-air separator or the second liquid-air separator comprises a hydrophobic filter element.

29 . The liquid-collection canister of claim 25 , wherein at least one of the first liquid-air separator or the second liquid-air separator is oleophobic.

30 . The liquid-collection canister of claim 25 further comprising an absorbent pad dis

Assignees

• Kci Licensing Inc

Inventors

• Bendele Kevin
• Smith Kenneth

Classifications

• 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

• A61M1/92

  with liquid supply means · CPC title

• A61M1/98

  Containers specifically adapted for negative pressure wound therapy · CPC title

• A61M1/784 Primary

  by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves · CPC title