Evaporative fluid pouch and systems for use with body fluids

• US 9,877,873 B2
• Filed: 09/21/2015
• Issued: 01/30/2018
• Est. Priority Date: 04/12/2011
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Coulthard, Richard Daniel John, Locke, Christopher Brian
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): TREYGER, ILYA Y
• Application Number:
  US14/860,165
• Publication Number:
  US 20160058925A1
• Time in Patent Office: 862 Days
• CPC Class Codes: A61F 13/00055 Saturation indicators
• CPC Class Codes: A61F 13/05 specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
• CPC Class Codes: A61M 1/73 comprising sensors or indicators for physical values
• CPC Class Codes: A61M 1/75 Intermittent or pulsating suction A61M1/63, A61M1/772 take precedence
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/82 Membrane pumps, e.g. bulbs
• CPC Class Codes: A61M 1/90 Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/962 having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction
• CPC Class Codes: A61M 1/985 the dressing itself forming the collection container
• CPC Class Codes: A61M 27/00 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 Class Codes: Y10T 29/49826 Assembling or joining

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.

Claims

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 of reduced pressure thereto; and

an inline storage-and-liquid-processing pouch having a first chamber and a second chamber, wherein the first chamber is fluidly coupled to the first reduced-pressure conduit and configured to be fluidly coupled to a reduced-pressure source, and wherein the second chamber has an evaporation port adapted to allow air to flow out of the second chamber and is configured to be fluidly coupled to a positive-pressure source.

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 a 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.

18. The system of claim 1, further comprising a reduced-pressure source fluidly coupled to the first chamber.

19. The system of claim 1, wherein the positive-pressure source is fluidly coupled to the second chamber at a second evaporation port and configured to move air within the second chamber.

6. An inline storage-and-liquid-processing pouch for use with body fluids from a patient, the inline storage-and-liquid-processing pouch comprising:

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 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.

7. The inline storage-and-liquid-processing pouch of claim 6, further comprising a storage material.

8. The inline storage-and-liquid-processing pouch of claim 7, wherein the storage material comprises an absorbent member and a first wicking member.

9. The inline storage-and-liquid-processing pouch of claim 7, 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.

10. The inline storage-and-liquid-processing pouch of claim 6, further comprising a first micro-pump coupled to the pouch body and fluidly coupled to the first port, wherein the first micro-pump is operable to produce reduced pressure delivered to the first port.

11. The inline storage-and-liquid-processing pouch of claim 6, further comprising a second micro-pump coupled to the pouch body and fluidly coupled to the first evaporation port, wherein the second micro-pump is operable to produce air flow in the second chamber between the first evaporation port and the second evaporation port.

12. The inline storage-and-liquid-processing pouch of claim 6, further comprising:

a first micro-pump coupled to the pouch body and fluidly coupled to the first port, wherein the first micro-pump is operable to produce reduced pressure that is delivered to the first port; and

a second micro-pump coupled to the pouch body and fluidly coupled to the first evaporation port, wherein the second micro-pump is operable to produce air flow in the second chamber between the first evaporation port and the second evaporation port.

13. The inline storage-and-liquid-processing pouch of claim 6, wherein the pouch body has surface area in plane view greater than 200 centimeters² and less than 730 centimeters².

14. An inline storage-and-liquid-processing pouch for use with body fluids from a patient, the inline storage-and-liquid-processing pouch comprising:

a pouch body having an interior portion divided into three parts by a first high-moisture-vapor-transfer-rate member and a second high-moisture-vapor-transfer-rate member to form a first chamber, a second chamber, and a third chamber, wherein the first chamber is between the second and third chambers;

a first air-movement manifold disposed within the second chamber;

a second 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;

a second evaporation port formed on the pouch body and fluidly coupled to the second chamber;

a third evaporation port formed on the pouch body and fluidly coupled to the third chamber; and

a fourth evaporation port formed on the pouch body and fluidly coupled to the third chamber.

15. The inline storage-and-liquid-processing pouch of claim 14, further comprising a storage material disposed within the first chamber.

16. The inline storage-and-liquid-processing pouch of claim 15, wherein the storage material comprises an absorbent member and a first wicking member.

17. The inline storage-and-liquid-processing pouch of claim 15, 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.

20. An inline storage-and-liquid-processing pouch for use with body fluids from a patient, the inline storage-and-liquid-processing pouch comprising:

a pouch body having an interior portion comprising 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 adapted to fluidly couple the first chamber to a reduced-pressure source; and

a second port adapted to fluidly couple the second chamber to a positive-pressure source.

21. The inline storage-and-liquid-processing pouch of claim 20, wherein the pouch body is adapted to maintain a relative humidity gradient between the first chamber and the second chamber.

22. The inline storage-and-liquid-processing pouch of claim 20, wherein the storage material comprises an absorbent member and a first wicking member.