Reduced pressure apparatus and methods

• US 10,046,096 B2
• Filed: 03/12/2013
• Issued: 08/14/2018
• Est. Priority Date: 03/12/2012
• Status: Active Grant

• Current Assignee: Smith & Nephew Medical Ltd (Smith & Nephew PLC)
• Original Assignee: Smith & Nephew PLC
• Inventors: Askem, Ben Alan, Collinson, Sarah Jenny, Cowan-Hughes, John, Fryer, Christopher John, Moy, Tom, Mullen, Paul, Nicolini, Derek, Pryor, Neil, Walsh, Philip, Binder, Ian
• Primary Examiner(s): Marcetich, Adam
• Application Number:
  US14/385,136
• Publication Number:
  US 20150174304A1
• Time in Patent Office: 1,981 Days
• CPC Class Codes: A61F 13/01042 Absorbency
• CPC Class Codes: A61F 13/0246 characterised by the skin-adhering 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 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61M 1/732 Visual indicating means for vacuum pressure
• 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 1/964 having venting means on or near the dressing
• CPC Class Codes: A61M 1/966 having a pressure sensor on or near the dressing
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 1/985 the dressing itself forming the collection container
• CPC Class Codes: A61M 2205/0216 Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking
• CPC Class Codes: A61M 2205/42 Reducing noise
• CPC Class Codes: A61M 2205/80 voice-operated command
• CPC Class Codes: A61M 2205/82 Internal energy supply devices
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2205/8293 Solar

Abstract

Some embodiments have a pump assembly mounted to or supported by a dressing for reduced pressure wound therapy. The dressing can have visual pressure, saturation, and/or temperature sensors to provide a visual indication of the level of pressure, saturation, and/or temperature within the dressing. Additionally, the pump assembly can have a pressure sensor in communication with the flow pathway through the pump, and at least one switch or button supported by the housing, the at least one switch or button being accessible to a user and being in communication with the controller. The pump assembly can have a controller supported within or by the housing, the controller being configured to control an operation of the pump. The pump can be configured to be sterilized following the assembly of the pump such that all of the components of the pump have been sterilized.

Claims

1. A wound dressing kit for reduced pressure wound therapy, comprising:

a pump assembly;

a power source; and

a dressing member having one or more absorptive layers and a fluid impermeable backing layer, and defining a first dressing portion and a second dressing portion;

a score along at least a portion of the dressing member between the first and the second dressing portions, the score being configured to increase the tearability of the dressing member between the first and second dressing portions;

wherein;

the first dressing portion is configured to support the one or more absorptive layers; and

the second dressing portion is configured to support at least one of the pump assembly and the power source; and

wherein the backing layer is configured to form a sealed enclosure over the one or more absorptive layers, the pump assembly, and the power source;

wherein the power source is removable from the pump assembly by tearing the dressing member along a score in the second dressing portion between the power source and the pump assembly; and

wherein the dressing member is configured such that the sealed enclosure is maintained in at least one of the first dressing portion or the second dressing portion after the dressing member is torn along the score between the power source and the pump assembly.

2. The wound dressing kit of claim 1, wherein the pump assembly comprises a voice coil actuated pump.

3. The wound dressing kit of claim 1, wherein the power source comprises one or more batteries.

4. The wound dressing kit of claim 1, wherein the power source comprises one or more printed batteries.

5. The wound dressing kit of claim 1, wherein the power source comprises one or more flexible batteries.

6. The wound dressing kit of claim 1, wherein the pump assembly is powered by one or more air activatable batteries.

7. The wound dressing kit of claim 1, wherein the pump assembly is at least partially powered by one or more photovoltaic cells.

8. The wound dressing kit of claim 1, wherein the pump assembly is at least partially powered by one or more photovoltaic cells positioned about at least one of the backing layer, a housing for the pump assembly, and a conduit configured to communicate a negative pressure provided by the pump assembly to the one or more absorptive layers.

9. The wound dressing kit of claim 1, wherein the pump assembly is at least partially powered by one or more batteries attachable to the dressing member using snap connectors, adhesive, Velcro, a housing having a closeable opening, or a pouch supported by the dressing member.

10. The wound dressing kit of claim 1, further comprising a flexible hinge positioned between the power source and the pump assembly to improve the flexibility and conformability of the portion of the dressing kit supporting the pump assembly and the power source.