# US 11,026,844 B2 · Low profile flexible pressure transmission conduit

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- Number: US 11,026,844 B2
- Document ID: US11026844B2
- Status: Granted
- Kind: B2
- Application number: 14/630,290
- Filed: 2015-02-24
- Published: 2015-09-03
- Granted: 2021-06-08
- Earliest claimed: 2014-03-03
- Assignees: KCI Licensing, Inc.
- Applicants: KCI Licensing, Inc.
- Inventors: Christopher Brian Locke; Timothy Mark Robinson; David George Whyte
- Web page: https://patentgrep.com/patent/US11026844B2

## CPC

- 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]
- A61M 1/913: {having a bridging element for transferring the reduced pressure from the connector to the dressing}
- A61M 1/915: {Constructional details of the pressure distribution manifold}
- A61M 1/96: {Suction control thereof}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

In some illustrative embodiments, a system suitable for treating a tissue site may include a dressing, a low-profile conduit, a conduit interface, and a reduced-pressure source. The dressing may be adapted for positioning at the tissue site. The low-profile conduit may be adapted for fluidly coupling to the dressing. The low-profile conduit may include a manifold and a sealing member encapsulating the manifold. The conduit interface may be adapted for fluidly coupling to the low-profile conduit. The conduit interface may be in fluid communication with the dressing through the low-profile conduit. The reduced-pressure source may be adapted for fluid communication with the conduit interface. Other systems, devices, and methods are disclosed.

## Claims

### Claim 1

A system for treating a tissue site, comprising:
a foam interface adapted to be positioned in fluid communication with the tissue site;
a dressing adapted to cover the foam interface at the tissue site, the dressing comprising:
a first sealing member adapted to provide a sealed space between the first sealing member and the tissue site,
a first wicking layer disposed in the sealed space,
a second wicking layer disposed in the sealed space, and
an absorbent layer disposed between the first wicking layer and the second wicking layer;
wherein a peripheral portion of the first wicking layer is directly coupled to a peripheral portion of the second wicking layer providing a wicking layer enclosure surrounding the absorbent layer between the first and the second wicking layer;
a low-profile conduit adapted to be fluidly coupled to the dressing and comprising a receiving end and a transmitting end separated by a length, the transmitting end configured to be coupled to the dressing, the low-profile conduit further comprising a receiving end aperture at the receiving end, a transmitting end aperture at the transmitting end, a manifold, and a second sealing member, the manifold sealingly enclosed and encapsulated within the second sealing member;
a conduit interface adapted to be coupled to the receiving end of the low-profile conduit, the conduit interface in fluid communication with the dressing through the low-profile conduit;
a reduced pressure source; and
a conduit adapted to be fluidly coupled between the conduit interface and the reduced pressure source, wherein a distal end of the conduit includes a coupling configured to attach to the reduced pressure source.

### Claim 2 (depends on 1)

The system of claim 1, wherein the transmitting end is adapted to be fluidly coupled to the dressing and the receiving end is adapted to be fluidly coupled to the conduit interface away from the dressing such that the conduit interface is positioned in fluid communication between the receiving end and the reduced pressure source and such that the conduit interface is in fluid communication with the transmitting end through the length of the low-profile conduit.

### Claim 3 (depends on 1)

The system of claim 1, wherein the second sealing member comprises a substantially liquid impermeable film.

### Claim 4 (depends on 1)

The system of claim 1, wherein the second sealing member comprises a first sealing layer and a second sealing layer, a periphery of the first sealing layer coupled to a periphery of the second sealing layer around the manifold.

### Claim 5 (depends on 1)

The system of claim 1, wherein the manifold comprises a plurality of fibers defining a plurality of fluid communication voids through the manifold, wherein the fibers are adapted to engage one another.

### Claim 6 (depends on 1)

The system of claim 1, wherein the manifold comprises a distribution layer and an acquisition layer adapted to define a plurality of fluid communication voids through the manifold for providing fluid communication through the low-profile conduit.

### Claim 7 (depends on 1)

The system of claim 1, wherein the manifold comprises a distribution layer including a plurality of longitudinal fibers oriented substantially in a longitudinal direction along a length of the low-profile conduit.

### Claim 8 (depends on 1)

The system of claim 1, wherein the manifold comprises an acquisition layer including a plurality of vertical fibers oriented substantially normal relative to a length of the low-profile conduit.

### Claim 9 (depends on 1)

The system of claim 1, wherein the manifold comprises a distribution layer and an acquisition layer, the distribution layer comprising a plurality of longitudinal fibers oriented substantially in a longitudinal direction along a length of the low-profile conduit, the acquisition layer comprising a plurality of vertical fibers oriented substantially normal relative to the longitudinal fibers.

### Claim 10 (depends on 9)

The system of claim 9, wherein the longitudinal fibers and the vertical fibers define a plurality of fluid communication voids through the manifold, wherein the longitudinal fibers and the vertical fibers are adapted to engage one another when the low-profile conduit is exposed to a force, and wherein the fluid communication voids are adapted to provide fluid communication through the low-profile conduit when exposed to the force.

### Claim 11 (depends on 1)

The system of claim 1, wherein the dressing is adapted to store liquid, and wherein the low-profile conduit is adapted to be substantially free of liquid.

### Claim 12 (depends on 1)

The system of claim 1, the dressing further comprising a primary hydrophobic filter positioned at an aperture in the first sealing member and adapted to substantially preclude the passage of liquids out of the sealed space.

### Claim 13 (depends on 1)

The system of claim 1, wherein the low-profile conduit further comprises a sealing apparatus configured to be positioned between the transmitting end and the dressing for bonding the transmitting end to the dressing.

### Claim 14 (depends on 1)

The system of claim 1, wherein the low-profile conduit further comprises a sealing apparatus positioned about the transmitting end aperture.