Vacuum Port for Vacuum Wound Therapy

• US 20090234307A1
• Filed: 03/12/2009
• Published: 09/17/2009
• Est. Priority Date: 03/13/2008
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Vitaris, Bethany A.
• Granted Patent: US 8,152,785 B2
• Time in Patent Office: Days
• US Class Current: 604/304
• CPC Class Codes: A61F 13/00068 specially adapted for application or removal of fluid, e.g. irrigation or drainage of wounds, under-pressure wound-therapy A61F13/0216 takes precedence; drainage appliances for wounds in general A61M27/00
• CPC Class Codes: A61F 13/01029 made of multiple layers
• CPC Class Codes: A61F 13/01046 Air-vapor permeability
• 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 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/0054 for deep wounds
• CPC Class Codes: A61M 1/78 Means for preventing overflow or contamination of the pumping systems combined with drainage containers A61M1/60
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/79 Filters for solid matter specially adapted for dental use A61C17/065
• 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 1/912 Connectors between dressing and drainage tube
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 2205/7545 for solid matter, e.g. microaggregates

Abstract

The present disclosure describes a dressing for use in a vacuum wound therapy procedure to promote healing of a wound. The dressing includes a cover layer for positioning over a wound to define a reservoir in which a reduced pressure may be maintained over the wound. A portal member is mounted relative to the cover layer and defines a fluid passage for fluid coupling with a reduced pressure supply conduit for creating the reduced pressure within the reservoir. A filter screen is mounted relative to the fluid passage and is dimensioned to minimize passage of tissue particles of predetermined dimension through the fluid passage of the portal member

Claims

1. A wound dressing for use in a vacuum wound therapy treatment comprising:

a cover layer for positioning over a wound to define a reservoir in which a reduced pressure may be maintained over the wound;

a portal member mounted relative to the cover layer, the portal member defining a fluid passage for fluid coupling with a reduced pressure supply conduit for creating the reduced pressure within the reservoir; and

a filter screen mounted relative to the fluid passage, the filter screen dimensioned to minimize passage of tissue particles of predetermined dimension through the fluid passage of the portal member.

2. The wound dressing according to claim 1, wherein the filter screen is integral to the portal member.

3. The wound dressing according to claim 1, wherein the filter screen is a distinct component from the portal member, and the portal member includes a cavity therein to receive the filter screen.

4. The wound dressing according to claim 3, wherein the filter screen is dimensioned to be received within the cavity of the portal member, and is substantially flush with a patient facing underside of the portal member.

5. The wound dressing according to claim 3, wherein the filter screen is dimensioned to be received within the cavity of the portal member, and is dimensioned to extend beyond a patient facing underside of the portal member.

6. The wound dressing according to claim 1, wherein the filter screen comprises a therapeutic material, the therapeutic material adapted to control a characteristic of exudate drawn through the fluid passage of the portal member.

7. The wound dressing according to claim 6, wherein the therapeutic material includes activated charcoal to control an odor of the exudate.

8. The wound dressing according to claim 6, wherein the therapeutic material includes an antimicrobial to control a bio-burden of the exudate.

9. The wound dressing according to claim 1, including a treatment element mounted adjacent the filter screen, the treatment element comprises a material adapted to control a characteristic of exudate drawn through the fluid passage of the portal member.

10. The wound dressing according to claim 9 wherein the material of the treatment element is adapted to control one of odor and microbials.

11. The wound dressing according to claim 10 including a second filter screen, the treatment element being secured between first and second filter screens to thereby define an insert for reception into the cavity.

12. The wound dressing according to claim 1 wherein the portal member includes:

a flange defining an outer surface and a patient surface generally facing the wound, the fluid passage extending through the outer surface and the patient surface; and

a connector segment for connection to the reduced pressure supply conduit.

13. The wound dressing according to claim 12 wherein the flange of the portal member is secured to the cover layer.

14. The wound dressing according to claim 1 including a negative pressure source in fluid communication with the reduced pressure supply conduit.