Canister for Receiving Wound Exudate in a Negative Pressure Therapy System

• US 20130144228A1
• Filed: 06/05/2012
• Published: 06/06/2013
• 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.
• Granted Patent: US 8,679,081 B2
• Time in Patent Office: Days
• 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 wound dressing dimensioned for positioning relative to a wound bed of a subject;

a subatmospheric pressure mechanism including a control unit disposed within a housing, the control unit including a vacuum source associated with a vacuum port; and

a collection canister having an interior wall defining an internal chamber 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 exudates.

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 2, wherein the material segment is configured as a removable insert adapted for positioning within the collection canister.

5. The system according to claim 1, wherein the baffle mechanism includes a plurality of baffles depending from the interior wall and within the internal chamber of the collection canister, the baffles dimensioned and arranged to impede flow of exudates within the chamber during ambulatory movement of the subject, to thereby minimize potential of spillage of the exudates and communication of the exudates to within the housing.

6. The system according to claim 5 wherein the collection canister defines a longitudinal axis and an orthogonal axis extending orthogonal to the longitudinal axis.

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

8. The system according to claim 7 wherein the baffles of the first group are arranged in general parallel relation with respect to the longitudinal axis.

9. The system according to claim 7 including a second group of baffles, the baffles of the second group being arranged in spaced relation with respect to the longitudinal axis.

10. The system according to claim 9 wherein the baffles of the second group are arranged in general transverse relation with respect to the longitudinal axis.

11. The system according to claim 9 wherein the baffles of the second group are arranged in general orthogonal relation with respect to the longitudinal axis.

12. The system according to claim 9 including a third group of baffles, the baffles of the third group being arranged in spaced relation with respect to the longitudinal axis.

13. The system according to claim 12 wherein the baffles of the third group are arranged in general diametrical opposed relation with respect to the baffles of the second group.

14. The system according to claim 1, wherein the baffle mechanism includes a fluid solidifier disposed within the collection canister, the fluid solidifier maintained in a select portion of the canister by a water soluble adhesive.

15. The system according to claim 14, wherein the fluid solidifier is adhered to the interior wall of the canister by the adhesive.

16. The system according to claim 14, wherein the water soluble adhesive is cured as a film.

17. The system according to claim 16, wherein the fluid solidifier is disposed in the canister under the film.

18. The system according to claim 14, wherein the fluid solidifier is mixed with a bioactive agent.