Canister for receiving wound exudate in a negative pressure therapy system

• US 8,216,198 B2
• Filed: 05/27/2009
• Issued: 07/10/2012
• Est. Priority Date: 01/09/2009
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Heagle, David, Fink, E. David, Wudyka, Scott, Malhi, Arnaz S., Swisher, David R.
• Primary Examiner(s): HAND, MELANIE JO
• Application Number:
  US12/472,465
• Publication Number:
  US 20100179493A1
• Time in Patent Office: 1,140 Days
• Field of Search: 604/317, 604/319, 604/360, 604/313, 604/540
• US Class Current: 604/319
• CPC Class Codes: A61M 1/65 the suction means being electrically actuated
• CPC Class Codes: A61M 1/68 Containers incorporating a flexible member creating suction
• CPC Class Codes: A61M 1/684 bellows-type
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• 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 1/882 Draining devices provided with means for releasing antimicrobial or gelation agents in the drained fluid
• 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 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 1/984 portable on the body
• CPC Class Codes: A61M 2205/3382 Upper level detectors
• CPC Class Codes: A61M 2205/7518 bacterial
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2206/14 Static flow deviators in tubes disturbing laminar flow in tubes, e.g. archimedes screws

Abstract

A system to promote the healing of an exuding wound includes a wound dressing, a subatmospheric pressure mechanism, and a collection canister. The wound dressing is dimensioned for positioning relative to a wound bed of a subject. The subatmospheric pressure mechanism includes a control unit disposed within a housing. The control unit includes a vacuum source associated with a vacuum port. The collection canister has an interior wall which defines an internal chamber. The internal chamber is in fluid communication with the vacuum source of the subatmospheric pressure mechanism through the vacuum port and with the wound dressing for collecting exudates removed for the wound bed under influence of the vacuum source. The canister including a baffle mechanism disposed within the internal chamber for dampening the movement of the collected exudates.

Claims

1. A system to promote the healing of an exuding wound, which comprises:

a vacuum source associated with a vacuum port; and

a rigid collection canister having an interior wall defining an internal chamber in fluid communication with the vacuum source through the vacuum port, the collection canister defining a longitudinal axis and an orthogonal axis extending orthogonal to the longitudinal axis, the collection canister including a baffle mechanism disposed within the internal chamber for dampening movement of exudates collected from an exuding wound, the baffle mechanism including a first group of baffles, the baffles of the first group being arranged in spaced relation with respect to the longitudinal axis, and a second group of baffles, the baffles of the second group being arranged in spaced relation and in general orthogonal relation with respect to the longitudinal axis.

2. The system according to claim 1, wherein the baffle mechanism includes at least one antimicrobial treated material segment for controlling the growth of microorganisms in the exudates.

3. The system according to claim 2, wherein the material segment is anchored to the interior wall of the collection canister.

4. The system according to claim 1, wherein the baffles are dimensioned and arranged to impede flow of exudates within the chamber during ambulatory movement of the subject.

5. The system according to claim 1 wherein the baffles of the first group are arranged in general parallel relation with respect to the longitudinal axis.

6. The system according to claim 1 including a third group of baffles, the baffles of the third group being arranged in spaced relation with respect to the longitudinal axis.

7. The system according to claim 6 wherein the baffles of the third group are arranged in general diametrical opposed relation with respect to the baffles of the second group.

8. The system according to claim 1, further comprising a wound dressing dimensioned for positioning relative to a wound bed of a subject, the internal chamber of the canister being in fluid communication with the wound dressing for collecting exudates removed from the wound bed under influence of the vacuum source.

9. The system according to claim 2, wherein the material segment is configured to allow flow of liquids and gases therethrough.

10. The system according to claim 1, wherein the baffle mechanism is disposed within a lower section of the canister.