Apparatus for aspirating, irrigating and cleansing wounds

• US 9,387,126 B2
• Filed: 09/26/2012
• Issued: 07/12/2016
• Est. Priority Date: 10/28/2002
• Status: Active Grant

• Current Assignee: Smith & Nephew PLC
• Original Assignee: Smith & Nephew PLC
• Inventors: Blott, Patrick Lewis, Hartwell, Edward Yerbury, Lee-Webb, Julian, Nicolini, Derek
• Primary Examiner(s): Kidwell, Michele M
• Application Number:
  US13/627,473
• Publication Number:
  US 20130096519A1
• Time in Patent Office: 1,385 Days
• Field of Search: 604/19, 604289-290, 604304-308, 604/543, 604/317, 604/327, 604319-323
• US Class Current: 1/1
• CPC Class Codes: A61F 13/00063 comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic drug delivery dressings A61K9/70; chemical aspect of the additives A61L15/00
• 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 13/512 characterised by its apertures, e.g. perforations
• CPC Class Codes: A61F 2013/00174 possibility of applying pressure
• CPC Class Codes: A61F 2013/00221 biodegradable, non-irritating
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/0054 for deep wounds
• CPC Class Codes: A61F 2013/00927 with biological activity, e.g. enzymes for debriding wounds or others, collagen or growth factors
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• 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 1/85 with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/916 specially adapted for deep wounds
• CPC Class Codes: A61M 1/92 with liquid supply means
• CPC Class Codes: A61M 1/96 Suction control thereof
• 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: A61M 3/0208 before use
• CPC Class Codes: A61M 3/0212 after use
• CPC Class Codes: A61M 3/0216 Pressure
• CPC Class Codes: A61M 3/022 Volume; Flow rate
• CPC Class Codes: A61M 3/0229 : Devices operating in a closed circuit, i.e. recycling the irrigating fluid

Abstract

An apparatus for cleansing wounds in which irrigant fluid from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing and a means for fluid cleansing and back to the dressing. The cleansing means (which may be a single-phase, e.g. microfiltration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing mate rials that are beneficial in promoting wound healing, is returned to the wound bed. The dressing and a method of treatment using the apparatus.

Claims

1. A system for applying negative pressure on a wound, the system comprising:

a device including a pump configured to provide negative pressure on the wound via a first vacuum line, wherein the device weighs less than 0.5 kg;

a dressing material for sealably covering the wound, the dressing material comprising a boss, the first vacuum line extending between the device and the boss of the dressing material to provide negative pressure to the wound sealably covered by the dressing material; and

an injectable foam configured to be located within the wound below the dressing material, wherein the injectable foam is configured to be introduced through an inlet line and substantially conform to a shape of the wound, wherein the first vacuum line and the inlet line are separate lines configured to be in fluid communication with the wound through the boss of the dressing material.

2. A system according to claim 1, wherein the device is portable.

3. A system according to claim 1, wherein the device includes a waste reservoir.

4. A system according to claim 1, wherein the pump comprises a peristaltic pump.

5. A system according to claim 1, wherein the pump is selected from a group consisting of a shuttle pump, diaphragm pump, piston pump, centrifugal pump, flexible impeller pump, progressing cavity pump, rotary vane pump, and vacuum pump with a pressure regulator.

6. A system according to claim 1, wherein the pump includes a check valve configured to control direction of a fluid flow.

7. A system according to claim 1, wherein the dressing material comprises a manifold connected to the pump, the manifold comprising a plurality of tubes configured to collect fluid from the wound.

8. A system for applying negative pressure on a wound, the system comprising:

a device including a structure configured to provide negative pressure on the wound via a first vacuum line;

a dressing material configured to sealably cover the wound, the dressing material comprising a boss, the first vacuum line configured to extend between the device and the boss of the dressing material to provide negative pressure to the wound sealably covered by the dressing material; and

an injectable foam configured to be located within the wound below the dressing material, the injectable foam configured to be introduced through an inlet line and exposed to the negative pressure provided by the device, wherein the injectable foam comprises an aerosol foam that has a set state the injectable foam is capable of substantially conforming to a shape of the wound;

wherein the first vacuum line and the inlet line are separate lines configured to be in fluid communication with the wound through the boss of the dressing material.

9. A system according to claim 8, wherein the device includes a waste reservoir.

10. A system according to claim 8, wherein the structure within the device configured to provide negative pressure on the wound includes a peristaltic pump.

11. A system according to claim 8, wherein the structure within the device configured to provide negative pressure on the wound is selected from a group consisting of a shuttle pump, diaphragm pump, piston pump, centrifugal pump, flexible impeller pump, progressing cavity pump, rotary vane pump, and vacuum pump with a pressure regulator.

12. A system according to claim 8, further comprising a waste reservoir configured to be connected to the device, the waste reservoir configured to store exudate removed by the negative pressure applied to the wound.

13. A system for applying negative pressure on a wound, the system comprising:

a pump configured to provide negative pressure on the wound via a first vacuum line;

a dressing material configured to sealably cover the wound, the dressing material comprising a boss, the first vacuum line configured to extend between the device and the boss of the dressing material to provide negative pressure to the wound; and

an injectable foam configured to be introduced through an inlet line and placed within the wound, wherein the injectable foam is capable of substantially conforming to a shape of the wound, wherein the first vacuum line and the inlet line are separate lines configured to be in fluid communication with the wound through the boss of the dressing material.

14. A system according to claim 13, wherein the pump weighs less than 0.5 kg.

15. A system according to claim 13, wherein the pump is portable.

16. A system according to claim 13, wherein the pump comprises a peristaltic pump.

17. A system according to claim 13, further comprising a waste reservoir connected to the pump for storing exudate obtained by the applied pressure on the wound.

18. A system according to claim 13, wherein the pump is selected from a group consisting of a shuttle pump, diaphragm pump, piston pump, centrifugal pump, flexible impeller pump, progressing cavity pump, rotary vane pump, and vacuum pump with a pressure regulator.

19. A system according to claim 13, wherein the pump includes a check valve configured to control direction of a fluid flow.

20. A system according to claim 13, wherein the dressing material comprises a manifold connected to the pump, the manifold comprising a plurality of tubes configured to collect fluid from the wound.