Active Exudate Control System

• US 20100305523A1
• Filed: 05/27/2009
• Published: 12/02/2010
• Est. Priority Date: 05/27/2009
• Status: Abandoned Application

• Current Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Vess, Mark A.
• Application Number:
  US12/472,714
• Publication Number:
  US 20100305523A1
• Time in Patent Office: Days
• US Class Current: 604/313
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61M 1/60 Containers for suction drainage, adapted to be used with an external suction source containers not adapted for subjection to vacuum A61M1/69
• 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 1/782 using valves with freely moving parts, e.g. float valves
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/984 portable on the body
• CPC Class Codes: A61M 2205/21 insensitive to tilting or inclination, e.g. spill-over prevention
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate

Abstract

A portable negative pressure wound therapy system includes a dressing assembly for positioning over a wound to apply a negative pressure to the wound and a canister assembly. The canister assembly includes a control unit having a vacuum source and a controller and a collection canister in communication with the dressing assembly operable to receive fluid from the wound. The collection canister has ports to introduce a vacuum from the vacuum source into the collection canister. A tip sensor is provided to detect a change in an orientation of the canister assembly. The canister assembly also includes valve assemblies, each valve assembly corresponds to one of the ports. The controller communicates with each valve assembly to selectively open or close the port corresponding to the valve assembly based on an output from the tip sensor.

Claims

1. A portable negative pressure wound therapy system comprising:

a dressing assembly for positioning over a wound to apply a negative pressure to the wound; and

a canister assembly including;

a control unit having a vacuum source and a controller;

a collection canister in communication with the dressing assembly operable to receive fluid from the wound, the collection canister having a plurality of ports to introduce a vacuum from the vacuum source into the collection canister;

a tip sensor operable to detect a change in an orientation of the canister assembly; and

a plurality of valve assemblies, each valve assembly corresponds to one of the plurality of ports,

the controller communicates with each valve assembly to selectively open or close the port corresponding to the valve assembly based on an output from the tip sensor.

2. The portable negative pressure wound therapy system according to claim 1, wherein the canister assembly further includes a canister interface, the canister interface is positioned between the control unit and the collection canister.

3. The portable negative pressure wound therapy system according to claim 2, wherein the plurality of valve assemblies are positioned at the canister interface.

4. The portable negative pressure wound therapy system according to claim 2, wherein the canister interface further includes a plurality of filters with each filter corresponding to a different valve assembly.

5. The portable negative pressure wound therapy system according to claim 3, wherein each valve assembly is positioned at the center of each edge of the canister interface.

6. The portable negative pressure wound therapy system according to claim 1, wherein each valve assembly includes a plunger member, a spring and a solenoid coil.

7. The portable negative pressure wound therapy system according to claim 1, wherein each valve assembly includes a poppet member, a spring and a solenoid coil.

8. The portable negative pressure wound therapy system according to claim 1, wherein the tip sensor includes a four-position angle sensor.

9. The portable negative pressure wound therapy system according to claim 1, wherein the tip sensor includes a plurality of accelerometers.

10. The portable negative pressure wound therapy system according to claim 1, further comprising a level sensor, the level sensor is operable to detect an inversion of the canister assembly and output a signal to the controller when the canister assembly is inverted, the controller controls each valve assembly to close the port corresponding to the valve assembly when the controller receives the signal from the level sensor.