Fluid collection canister including canister top with filter membrane and negative pressure wound therapy systems including same

• US 9,155,821 B2
• Filed: 09/19/2013
• Issued: 10/13/2015
• Est. Priority Date: 06/10/2009
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Inventors: Wudyka, Scott
• Primary Examiner(s): SU, SUSAN SHAN
• Application Number:
  US14/031,384
• Publication Number:
  US 20140107598A1
• Time in Patent Office: 754 Days
• Field of Search: 604/319
• US Class Current: 1/1
• 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 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• 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 2205/18 with alarm
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3382 Upper level detectors
• CPC Class Codes: A61M 2205/7536 allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202

Abstract

A fluid collection canister including a chamber to collect fluids and a canister top disposed over the chamber. The canister top includes a bottom side facing into the chamber, including first and second ribs disposed thereon, a filter membrane attached to the first and second ribs, a first port to communicate with the chamber and a pressure source external to the chamber, and a second port to communicate with the chamber and a sensor external to the chamber. The first port is in fluid communication with a first area, which is bounded by the filter membrane, the first and second ribs and the bottom side of the canister top. The second port is in fluid communication with a second area, which is bounded by the filter membrane, the second rib and the bottom side of the canister top.

Claims

1. A fluid collection canister, comprising:

a chamber configured to collect fluids;

a canister top disposed over the chamber, the canister top comprising a bottom side facing into the chamber, the bottom side including first and second ribs disposed thereon;

a filter membrane configured to be attached to the first and second ribs,

a first port located on the canister top, the first port configured to communicate with the chamber and a pressure source external to the chamber;

a second port located on the canister top, the second port configured to communicate with the chamber and a pressure sensor external to the chamber; and

a third port located on the canister, the third port configured to communicate with the chamber and to introduce the fluids into the chamber,

wherein the first port is in fluid communication with a first area, the first area bounded by the filter membrane, the first and second ribs and the bottom side of the canister top,

wherein the second port is in fluid communication with a second area, the second area bounded by the filter membrane, the second rib and the bottom side of the canister top, and

wherein the first area and the second area are isolated from each other by the second rib.

2. The fluid collection canister of claim 1, wherein the filter membrane is cut to a profile of the first rib.

3. The fluid collection canister of claim 1, wherein the filter membrane includes a micro-pore filter membrane.

4. The fluid collection canister of claim 1, wherein the first and second areas are pneumatically isolated from each other by the second rib.

5. The fluid collection canister of claim 1, further comprising a side wall to provide engagement of the canister top with an upper end of a peripheral wall of the chamber.

6. The fluid collection canister of claim 5, wherein at least a portion of the first rib is disposed adjacent to the side wall.

7. The fluid collection canister of claim 1, wherein the collection canister is configured to be in fluid communication with a control unit, wherein the pressure source is disposed in the control unit and the pressure sensor is configured to be in communication with the control unit.

8. The fluid collection canister of claim 7, wherein the control unit monitors and controls a negative pressure within the collection canister.