Manually-actuated, reduced-pressure systems for treating wounds

• US 8,641,692 B2
• Filed: 07/09/2009
• Issued: 02/04/2014
• Est. Priority Date: 07/11/2008
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Tout, Aldan Marcus, Locke, Christopher Brian, Robinson, Timothy Mark
• Primary Examiner(s): Stephens, Jacqueline
• Assistant Examiner(s): Hanrahan, Benedict L
• Application Number:
  US12/500,134
• Publication Number:
  US 20100030166A1
• Time in Patent Office: 1,671 Days
• Field of Search: 604316-319, 604540-543, 604/313, 602/43, 128/849, 601/6, 294/28
• US Class Current: 604/316
• CPC Class Codes: A61M 1/67 Containers incorporating a piston-type member to create suction, e.g. syringes cupping glasses A61M1/08; with a flexible member creating suction A61M1/68
• 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 1/732 Visual indicating means for vacuum pressure
• CPC Class Codes: A61M 1/76 Handpieces specially for suction-irrigation A61M1/774, aspiration tips A61M1/84
• CPC Class Codes: A61M 1/82 Membrane pumps, e.g. bulbs
• CPC Class Codes: A61M 1/96 Suction control thereof
• 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 1/98 Containers specifically adapted for negative pressure wound therapy
• CPC Class Codes: A61M 2205/071 hand operated
• 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
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A manually-actuated, constant reduced-pressure apparatus for use with a reduced-pressure system for treating tissue at a tissue site includes a flexible, collapsible member that is operable to move between a compressed position and an extended position. The collapsible member may be disposed between a carrier member and a slider member that move between a compressed position and an extended position. The carrier member and slider member are urged away from each other by a constant-force biasing member, e.g., a constant force coil spring. As the apparatus moves from the compressed position to the extended position, a constant reduced-pressure is generated and delivered to a reduced-pressure port. Systems, methods of manufacturing a manually-actuated, constant reduced-pressure apparatus, and methods of treating a tissue site are also provided.

Claims

1. A manually-actuated, reduced-pressure system, the system comprising:

a manifold member operable to distribute a reduced pressure;

a sealing member operable to provide a fluid seal over the manifold member;

a reduced-pressure delivery member operable to receive and transmit reduced pressure, the reduced-pressure delivery member having a first end and a second end;

a reduced-pressure interface fluidly coupled to the second end of the reduced-pressure delivery member and operable to receive reduced pressure from the reduced-pressure delivery member and transmit the reduced pressure to the manifold member; and

reduced-pressure source wherein the reduced-pressure source comprises;

a carrier member having a first socket member formed with a first socket opening, a second socket member formed with a second socket opening, and a carrier lateral member coupled to the first socket member and second socket member;

a slider member having a first arm sized and configured to mate with the first socket opening of the first socket member, a second arm sized and configured to mate with a the second socket opening of the second socket member, and a lateral slider member coupled to the first arm and second arm;

wherein the carrier member and slider member are operable to slidably engage one another and are operable to move between a compressed position and an extended position;

a first constant-force spring coupled to the first socket member proximate the first socket opening, the first constant-force spring operable urge the carrier member and the slider member from the compressed position to the extended position;

a second constant-force spring coupled to the second socket member proximate the second socket opening, the second constant force spring operable to urge the carrier member and the slider member from the compressed position to the extended position; and

a collapsible member having a first end and a second end, the first end coupled to the carrier member and the second end coupled to the slider member and operable to move between the compressed position and the extended position.

2. The manually-actuated, reduced-pressure system of claim 1, wherein the reduced-pressure source is operable to provide a constant reduced pressure.

3. The manually-actuated, reduced-pressure system of claim 1, wherein the manually-actuated, constant reduced-pressure source is operable to provide a constant reduced pressure and wherein the manually-actuated, constant reduced-pressure source comprises:

an evacuation port operable to allow air or other gases to exit the interior space of the collapsible member; and

wherein the first constant-force spring and the second constant-force spring each comprises a constant-force coil spring.

4. The manually-actuated, reduced-pressure system of claim 1 wherein the carrier member is formed with an indicator window therein for viewing a portion of the slider member.

5. The manually-actuated, reduced-pressure system of claim 1, wherein

the first constant-force spring is a first coil spring;

and

the second constant-force spring is a second coil spring.

6. The manually-actuated, reduced-pressure system of claim 1, further comprising:

an evacuation port coupled to the collapsible member; and

a reduced-pressure port coupled to the collapsible member.