Subatmospheric pressure mechanism for wound therapy system

• US 8,007,481 B2
• Filed: 07/17/2008
• Issued: 08/30/2011
• Est. Priority Date: 07/17/2008
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Sisk, Ricky A., Schuessler, Wayne
• Primary Examiner(s): Zalukaeva; Tatyana
• Assistant Examiner(s): Treyger; Ilya Y
• Application Number:
  US12/175,038
• Publication Number:
  US 20100016816A1
• Time in Patent Office: 1,139 Days
• Field of Search: 604/311, 604/312, 604/313, 604/315, 604/316
• US Class Current: 604/313
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/984 portable on the body
• CPC Class Codes: A61M 2205/3341 stabilising pressure or flow to avoid excessive variation

Abstract

A portable system for subatmospheric pressure therapy in connection with healing a surgical wound is provided. The system includes a wound dressing dimensioned for positioning relative to a wound bed of a subject, and a collection canister in fluid communication with the wound dressing. The canister includes a base defining a fluid receiving cavity and having a fluid inlet port and a vacuum port. The fluid inlet port is configured for fluid communication with a wound dressing. The system further includes a cover selectively engageable to the base, e.g., in a snap-fit manner. The cover is configured to receive a control unit and has a vent assembly for exhausting the control unit. A seal member is interposed relative to the base and the cover to establish and maintain a substantial sealed relationship between the two components when assembled.

Claims

1. A portable system for subatmospheric pressure therapy in connection with healing a surgical wound, which comprises:

a wound dressing dimensioned for positioning relative to a wound bed of a subject; and

a collection canister in fluid communication with the wound dressing, the canister including;

a base defining a fluid receiving cavity and having a fluid inlet port and a vacuum port, the fluid inlet port being configured for fluid communication with the wound dressing;

a cover selectively engageable to the base, the cover having a control unit and a vent for exhausting the control unit;

a divider having a plurality of longitudinal grooves formed on an underside thereof; and

a seal member interposed relative to the base and the cover, the seal member adapted to establish a substantial sealed relation between the base and the cover.

2. The system according to claim 1 wherein the control unit includes a vacuum source and a power source.

3. The system according to claim 1 wherein including a hydrophobic membrane covering the vacuum port.

4. The system according to claim 1 wherein the seal member comprises a gel.

5. The system according to claim 1 wherein the vent is recessed relative to the cover.

6. The system according to claim 1 wherein the divider further includes a channel fluidly communicating the plurality of longitudinal grooves with at least one of the fluid inlet port and the vacuum port.

7. The system according to claim 1 including a cap positionable within at least one of the fluid inlet port and the vacuum port.