Wound irrigation device

• US 20070032762A1
• Filed: 09/29/2005
• Published: 02/08/2007
• Est. Priority Date: 08/08/2005
• Status: Active Grant

• Current Assignee: Innovative Therapies Incorporated (Cardinal Health, Inc.)
• Original Assignee: Innovative Therapies Incorporated (Cardinal Health, Inc.)
• Inventors: Vogel, Richard
• Granted Patent: US 7,837,673 B2
• Time in Patent Office: Days
• US Class Current: 604/305
• CPC Class Codes: A61F 13/0226 characterised by the support layer
• 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: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/0054 for deep wounds
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/782 using valves with freely moving parts, e.g. float valves
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/882 Draining devices provided with means for releasing antimicrobial or gelation agents in the drained fluid
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/92 with liquid supply means
• CPC Class Codes: A61M 1/96 Suction control thereof
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 1/984 portable on the body
• CPC Class Codes: A61M 2205/15 Detection of leaks
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/42 Reducing noise
• CPC Class Codes: A61M 2209/088 on the body

Abstract

An apparatus includes a fluid permeable dressing and a cover membrane configured to extend over the fluid permeable dressing. A tube is coupled to the fluid permeable dressing and is configured to apply suction through the fluid permeable dressing. A fluid reservoir is coupled to the cover membrane, the fluid vessel including an inlet port configured to receive a fluid and an outlet port fluidically coupled to the fluid permeable dressing.

Claims

1. An apparatus, comprising:

a fluid permeable dressing;

a cover membrane configured to extend over the fluid permeable dressing;

a tube coupled to the fluid permeable dressing, the tube configured to apply suction through the fluid permeable dressing; and

a fluid reservoir coupled to the cover membrane, the fluid vessel including an inlet port configured to receive a fluid and an outlet port fluidically coupled to the fluid permeable dressing.

2. The apparatus of claim 1, wherein the fluid vessel is coupled directly to the cover membrane using at least one of a heat weld, a radio frequency (RF) weld, or an adhesive.

3. The apparatus of claim 1, wherein the fluid vessel is coupled to at least one of an outer surface of the cover membrane or an inner surface of the cover membrane.

4. The apparatus of claim 1, wherein the inlet port of the fluid vessel is a self-sealing needle port.

5. The apparatus of claim 1, wherein the outlet port of the fluid vessel is a regulated drip port.

6. The apparatus of claim 1, wherein the fluid vessel is disposed between the fluid permeable dressing and the cover membrane.

7. The apparatus of claim 1, wherein the inlet port is spaced less than six inches from the outlet port.

8. An apparatus, comprising:

a housing;

a control panel coupled to the housing;

a fluid reservoir defined within the housing;

a collection container coupled to the housing; and

a wound dressing fluidically coupled between the fluid reservoir and the collection container, the wound dressing including a porous substrate.

9. The apparatus of claim 8, further comprising a vacuum pump coupled to the housing.

10. The apparatus of claim 8, further comprising a tube having a first lumen fluidically coupled to the fluid reservoir and a second lumen fluidically coupled to the collection container.

11. The apparatus of claim 8, wherein the collection container is removably coupled to the housing.

12. A wound dressing, comprising:

a porous substrate;

a semi-permeable cover coupled to the porous substrate;

a first tube coupled adjacent to the porous substrate, the first tube configured to be coupled to a vacuum source;

a second tube coupled adjacent to the porous substrate, the second tube configured to be coupled to a liquid supply source; and

a therapeutic material coupled to and adjacent with a surface of the porous substrate, the therapeutic material being at least one of a silver-impregnated material, a biodegradable material, or a biocompatible material.

13. The wound dressing of claim 12, wherein the therapeutic material is woven nylon coated with substantially pure metallic silver.

14. The wound dressing of claim 12, wherein the therapeutic material is polylactide-coglycolic acid (PLGA).

15. The wound dressing of claim 12, wherein the therapeutic material is an acellular dermal matrix.

16. The wound dressing of claim 12, wherein the therapeutic material is an autologous graft.

17. A processor-readable medium storing code representing instructions to cause a processor to perform a process, the code comprising code to:

receive a parameter signal associated with a selected pressure level of a vacuum pump coupled to a wound dressing including a porous substrate and a cover membrane;

receive a pressure signal from a sensor coupled to the wound dressing, the pressure signal associated with a pressure in the wound dressing; and

output a control signal operative to change the vacuum pump from a first mode to a second mode, the first mode being associated with a vacuum pressure, the second mode being associated with a vacuum pressure lower than the vacuum pressure associated with the first mode, the control signal being based on the parameter signal and the pressure signal.

18. The processor-readable medium of claim 17, wherein the control signal is operative to control the vacuum pump in the first mode until the pressure in the wound dressing reaches a predetermined threshold.

19. The processor-readable medium of claim 17, wherein the control signal is operative to control the vacuum pump in the second mode to maintain a steady state pressure in the wound dressing.

20. The processor-readable medium of claim 17, the vacuum pump being a first vacuum pump, wherein the code to output a control signal is operative to actuate a second vacuum pump coupled to the wound dressing, the second mode being associated with the second vacuum pump.

21. The processor-readable medium of claim 17, the code further comprising code to:

generate an alarm condition signal when a data value received from the sensor is below a predetermined threshold.

22. The processor-readable medium of claim 17, the vacuum pump being quieter in the second mode than the first mode.