Self contained wound dressing with micropump

• US 8,207,392 B2
• Filed: 11/01/2010
• Issued: 06/26/2012
• Est. Priority Date: 09/07/2005
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Haggstrom, Kurt, Tranchemontagne, Alain, Jinga, Loredana
• Primary Examiner(s): Bianco, Patricia
• Assistant Examiner(s): PATEL, TARLA R
• Application Number:
  US12/917,103
• Publication Number:
  US 20110046584A1
• Time in Patent Office: 603 Days
• Field of Search: 128/888, 206/288, 206/289, 206/313, 206/315, 602/2, 602 41- 43, 602 53- 54, 424443-449, 604/304, 604/305, 604307-308, 604/313, 604/315, 604/543, 604/521, 604/48, 604/500, 604/503, 604/505, 604/176, 604289-290
• US Class Current: 602/53
• CPC Class Codes: A61F 13/00055 Saturation indicators
• 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 13/0203 with fluid retention members
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention 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 2013/00174 possibility of applying pressure
• CPC Class Codes: A61F 2013/00182 with transparent part
• CPC Class Codes: A61F 2013/00553 with detachable parts
• CPC Class Codes: A61F 2013/0057 with openable cover
• CPC Class Codes: A61F 2013/00846 with transparent or translucent part
• CPC Class Codes: A61F 2013/0091 with disinfecting or anaesthetics means, e.g. anti-mycrobic
• CPC Class Codes: A61F 2013/00927 with biological activity, e.g. enzymes for debriding wounds or others, collagen or growth factors
• CPC Class Codes: A61F 2013/00944 humidity; moisture
• CPC Class Codes: A61F 2013/00957 pressure
• CPC Class Codes: A61M 1/732 Visual indicating means for vacuum pressure
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• 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 1/966 having a pressure sensor on or near the dressing
• CPC Class Codes: A61M 1/985 : the dressing itself forming the collection container
• CPC Class Codes: A61M 2205/15 : Detection of leaks
• CPC Class Codes: A61M 2205/3592 : using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/8206 : battery-operated
• 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

Abstract

A composite wound dressing apparatus promotes healing of a wound via the use of a micropump system housed within a wound dressing member. The micropump system includes a miniature pump that applies a subatmospheric pressure to the wound to effectively draw wound fluid or exudate away from the wound bed without the need for an external vacuum source. Hence, the wound dressing and micropump system is portable which allows the patient mobility that is unavailable when an external vacuum source is used. The patient does not need to be constrained for any period of time while exudate is being removed from the wound.

Claims

1. A surgical apparatus for treating a medical condition, comprising:

a wound dressing member dimensioned and configured for positioning adjacent a wound bed of a subject, the wound dressing member providing an airtight seal against the wound bed; and

a pump positioned above the wound bed and beneath the wound dressing member, the pump dimensioned and adapted to establish a subatmospheric condition within the wound dressing member in accordance with a treatment modality for treating the medical condition.

2. The surgical apparatus as set forth in claim 1, wherein the pump is positioned above the wound dressing member.

3. The surgical apparatus as set forth in claim 1, wherein the pump is positioned within the wound dressing member.

4. The surgical apparatus as set forth in claim 1, the pump is positioned partially within the wound dressing member.

5. The surgical apparatus as set forth in claim 1, wherein the pump is associated with the wound dressing member.

6. The surgical apparatus as set forth in claim 1, wherein the pump is connected using a conduit to the wound dressing member.

7. The surgical apparatus as set forth in claim 6, wherein the conduit is dimensioned and adapted to convey fluids from the wound bed.

8. The surgical apparatus as set forth in claim 7, including a canister in fluid communication with the conduit.

9. The surgical apparatus as set forth in claim 1, including a pressure level indicator in fluid communication with the wound dressing member for indicating a pressure condition within the wound bed.

10. The surgical apparatus as set forth in claim 9, wherein the pressure level indicator includes a visual indicator for indicating the pressure condition.

11. The surgical apparatus as set forth in claim 10, wherein the visual indicator includes a color coded element.

12. The surgical apparatus as set forth in claim 9, wherein the pressure level indicator is at least partially embedded within the wound dressing member.

13. The surgical apparatus as set forth in claim 1, including a saturation indicator mounted within the wound dressing member for indicating a degree of saturation thereof.

14. The surgical apparatus as set forth in claim 1, including an electronic controller associated with the pump for controlling operation of the pump.

15. The surgical apparatus as set forth in claim 14, including a pressure sensor associated with the controller and being dimensioned and adapted to detect pressure and send a corresponding signal to the controller.

16. The surgical apparatus as set forth in claim 15, including a pressure level indicator independent of the electronic controller in fluid communication with the wound dressing member for indicating a pressure condition within the wound bed.