Apparatuses and methods for negative pressure wound therapy

Patent metadata

Field	Value
Publication number	US-12458541-B2
Application number	US-202217961075-A
Country	US
Kind code	B2
Filing date	Oct 6, 2022
Priority date	Dec 22, 2009
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

Disclosed herein are several embodiments of a negative pressure appliance and methods of using the same in the treatment of wounds. Some embodiments are directed to improved fluidic connectors or suction adapters for connecting to a wound site, for example using softer, kink-free conformable suction adapters.

First claim

What is claimed is:

1 . A wound therapy device, comprising:
a fluidic connector, comprising:
a rigid housing comprising a fluid outlet on a first side of the housing and a fluid inlet on a second side of the housing and inline with the fluid outlet, the fluid outlet configured to be connected to a source of negative pressure, the fluid outlet and fluid inlet sharing a first central axis,
an air leak comprising a filter on the first side of the housing and an air outlet on the second side of the housing and inline with the filter, the filter and air outlet having a second central axis different from the first central axis, and a connector coupling configured to removably connect to a port;
wherein the fluidic connector is configured such that when the fluid outlet is connected to the source of negative pressure and the fluidic connector is connected to the port, ambient air from the air leak can be fed to a first aperture of the port and negative pressure can be applied to a second aperture of the port and wherein the first central axis is parallel to the second central axis.

2 . The wound therapy device of claim 1 , wherein the fluidic connector is configured to pierce a drape.

3 . The wound therapy device of claim 1 , further comprising a fluid conduit, the fluid conduit configured to connect to the fluidic connector.

4 . The wound therapy device of claim 1 , wherein the port is positioned over an aperture in a drape.

5 . The wound therapy device of claim 1 , further comprising a wound dressing, the port mounted on the wound dressing.

6 . The wound therapy device of claim 5 , wherein the dressing comprises a 3D knitted material.

7 . The wound therapy device of claim 1 , wherein the air leak comprises a plurality of channels.

8 . The wound therapy device of claim 1 , wherein the port comprises an air leak aperture and a fluid outlet aperture.

9 . A connector device for a negative pressure wound therapy system, the connector device comprising:
a connector housing, a fluid outlet connected to a first side of the connector housing, an air feeding port and an air filter on the first side of the connector housing, and a coupling on a second side of the connector housing, the second side opposite the first side of the connector housing; wherein:
the fluid outlet is configured to be releasably connected to a negative pressure source,
the coupling is configured to engage the connector device with a wound side connector of a wound side assembly,
the wound side assembly comprises the wound side connector having a fluid removing conduit with a first side port along a first center axis and an air supplying conduit with a second side port along a second axis parallel to the first axis, and
the connector device is configured such that when the coupling is engaged with said wound side connector, said fluid removing conduit is fluidly connected to the fluid outlet, and the air supplying conduit is fluidly connected to the air feeding port such that air ambient of the connector device can be fed to the air supplying conduit via the air filter and the air feeding port.

10 . The connector device of claim 9 , wherein said connector device comprises an air feeding conduit comprising the air feeding port and an air inlet opening, the air feeding conduit being an integrated part of said connector housing.

11 . The connector device according to claim 10 , wherein the air filter is provided within an air filter housing provided with said air inlet opening allowing air to flow through said air filter.

12 . The connector device of claim 9 , wherein a fluid conduit is connected to the fluid outlet.

13 . A connector system for a negative pressure wound therapy system, the connector system comprising:
a connector device comprising a connector housing, a fluid outlet, an air feeding port, an air filter on a first side of the connector housing, and a coupling on a second opposite side of the housing, the coupling comprising a first barbed connector and a second barbed connector parallel to the first barbed connector; and a wound side assembly comprising a wound side coupling comprising a first aperture and a second aperture parallel to the first aperture, wherein the first and second apertures are spaced apart and separated by a wall of the wound side assembly, wherein:
the fluid outlet is configured to be connected to a negative pressure source;
the first barbed connector is configured to be engaged with the first aperture of the wound side coupling and the second barbed connector is configured to be engaged with the second aperture of the wound side coupling, the wound side assembly further comprising a fluid removing conduit with a portion connected to the wound side coupling and an air supplying conduit with a portion connected to the wound side coupling; and
the connector device is configured such that when the connector device is engaged with said wound side coupling, said fluid removing conduit is fluidly connected to the fluid outlet, and the air supplying conduit is fluidly connected to the air feeding port such that air ambient of the connector device can be fed to the air supplying conduit via the air filter and the air feeding port.

14 . The connector system of claim 13 , wherein said connector device comprises an air feeding conduit comprising the air feeding port and an air inlet opening, the air feeding conduit being an integrated part of said connector housing.

15 . The connector system of claim 14 , wherein the air filter is provided within an air filter housing provided with said air inlet opening allowing air to flow through said air filter.

16 . The connector system of claim 13 , wherein a fluid conduit is connected to the fluid outlet.

17 . The connector system of claim 13 , further comprising a source of negative pressure.

Assignees

• Smith & Nephew Inc

Inventors

• Albert Sean
• Armstrong Ed
• Beaudoin Ken
• Blackburn Iain Michael
• Bussone Phil
• Crawford Brendan
• Emmerson Robert
• Ewaschuk Mike
• Gianelis Stephen
• Goddard Andrew
• Gordon Joseph
• Guarraia Mark
• Johnson Tim
• Keith-Lucas Darwin
• Linton Andrew
• Nelsen Dan
• Salame Michael
• Stern Tim
• White Mark

Classifications

• A61F2013/0074

  containing foams · CPC title

• A61F2013/00174

  possibility of applying pressure · CPC title

• A61F13/02

  Adhesive bandages or dressings · CPC title

• A61M1/90

  Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing · CPC title

• A61M1/962

  having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction · CPC title