Evaporative fluid pouch and systems for use with body fluids

Patent metadata

Field	Value
Publication number	US-9314377-B2
Application number	US-201213442567-A
Country	US
Kind code	B2
Filing date	Apr 9, 2012
Priority date	Apr 12, 2011
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

An inline storage-and-liquid-processing pouch for use with body fluids from a patient is presented that involves introducing body fluids into a first chamber in the storage-and-liquid-processing pouch and flowing air through a second chamber. The chambers are separated by a high-moisture-vapor-transfer-rate member. The air flow in the second chamber enhances liquid removal from the first chamber across the high-moisture-vapor-transfer-rate member. Other systems, devices, and methods are disclosed herein.

First claim

We claim:

1. A system for treating a tissue site on a patient with reduced-pressure, the system comprising:
a reduced-pressure dressing for disposing proximate to the tissue site;
a first reduced-pressure conduit fluidly coupled to the reduced-pressure dressing for delivery reduced pressure thereto;
an inline storage-and-liquid-processing pouch having a first chamber and a second chamber separated by a first high-moisture-vapor-transfer-rate member, wherein the first reduced-pressure conduit is fluidly coupled to the first chamber;
a reduced-pressure source fluidly coupled to the first chamber;
a pressure source fluidly coupled to the second chamber at a first evaporation port;
a second evaporation port formed on the inline storage-and-liquid-processing pouch; and
wherein the pressure source is configured to move air within the second chamber.

2. The system of claim 1 , wherein the inline storage-and-liquid-processing pouch comprises:
a pouch body having an interior portion divided into two parts by the first high-moisture-vapor-transfer-rate member to form the first chamber and the second chamber;
a storage material disposed within the first chamber; and
an air-movement manifold disposed within the second chamber.

3. The system of claim 2 , wherein the storage material comprises an absorbent member.

4. The system of claim 2 , wherein the storage material comprises an absorbent member and a first wicking member.

5. The system of claim 2 , wherein the storage material comprises an absorbent member, a first wicking member, and a second wicking member, wherein the absorbent member is disposed between the first wicking member and the second wicking member.

6. A method for temporarily storing and processing body fluids outside of a patient, the method comprising:
providing an inline storage-and-liquid-processing pouch, wherein the inline storage-and-liquid-processing pouch comprises:
a pouch body having an interior portion divided into two parts by a first high-moisture-vapor-transfer-rate member to form a first chamber and a second chamber,
a storage material disposed within the first chamber,
an air-movement manifold disposed within the second chamber,
a first port formed on the pouch body and fluidly coupled to the first chamber,
a second port formed on the pouch body and fluidly coupled to the first chamber,
a first evaporation port formed on the pouch body and fluidly coupled to the second chamber, and
a second evaporation port formed on the pouch body and fluidly coupled to the second chamber;

delivering the body fluids, which include liquids, to the first port and into the first chamber; and
developing an airflow in the second chamber through the air-movement manifold, whereby a humidity gradient is maintained across the first high-moisture-vapor-transfer-rate member to evaporate liquids from the first chamber.

7. The method of claim 6 , wherein the step of delivering body fluids comprises: delivering reduced pressure to the second port and fluidly coupling the first port to the patient to receive body fluids.

8. The method of claim 6 , wherein the step of developing an airflow in the second chamber comprises applying a reduced pressure to the first evaporation port and allowing air to enter the second evaporation port.

9. The method of claim 6 , wherein the step of developing an airflow in the second chamber comprises applying positive pressure to the first evaporation port and allow air to exit the second evaporation port.

10. The method of claim 6 , wherein the storage material comprises an absorbent member.

11. The method of claim 6 , wherein the storage material comprises an absorbent member and a first wicking member.

12. The method of claim 6 , wherein the storage material comprises an absorbent member, a first wicking member, and a second wicking member, wherein the absorbent member is disposed between the first wicking member and the second wicking member.

Assignees

• Coulthard Richard Daniel John
• Locke Christopher Brian
• Kci Licensing Inc

Inventors

• Coulthard Richard Daniel John
• Locke Christopher Brian

Classifications

• A61F13/00055 Primary

  Saturation indicators · CPC title

• A61M27/00

  Drainage appliance for wounds or the like {, i.e. wound drains, implanted drains} ({negative pressure wound therapy devices A61M1/90;} implements for holding wound open A61B17/02 {; middle ear drainage A61F11/202}) · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• A61M1/962

  having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction · CPC title

• A61M1/915

  Constructional details of the pressure distribution manifold · CPC title