JP-2026514292-A - A system for negative pressure wound occlusion therapy

Abstract

A system for negative pressure wound occlusion (NPWT) includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a pump and a casing spaced apart from the wound. The casing includes a first portion comprising a first internal cavity configured to at least partially receive the pump, a second internal cavity spaced apart from the first internal cavity, and a channel for fluid communication between the first internal cavity and the second internal cavity. The casing further includes a second portion pivotably connected to the first portion and a third portion pivotably connected to the first portion and pivotable relative to the first portion independently of the second portion. [Selection Diagram] Figure 1

Inventors

• マクレガー，アンドリュー ジェイ．
• シモンズ，テイラー エイチ．
• ランドルフ，ラリー ティー．
• オリヴァ，マイケル アール．
• カザラ，リチャード エム．
• レーベイン，ジョナサン ジー．
• ポロック，マイケル

Assignees

• ソルベンタム インテレクチュアル プロパティズ カンパニー

Dates

Publication Date

20260508

Application Date

20240213

Priority Date

20230213

Claims (20)

1. A system for negative pressure wound occlusion (NPWT) of wounds, A bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion, Pump and A casing spaced apart from the aforementioned wound, A first part comprising: a first internal cavity configured to at least partially receive the pump inside; a second internal cavity spaced apart from the first internal cavity and configured to receive the second bridge end portion of the bridge dressing inside; and a channel that allows the first internal cavity to fluidly communicate with the second internal cavity, A second part is pivotably connected to the first part and configured to at least partially engage with the first part in the closed position of the second part, the second part comprising a third internal cavity aligned with the first internal cavity in the closed position of the second part so that the pump is received within the first internal cavity and the third internal cavity, A system comprising: a casing having a third portion, the third portion being pivotably connected to the first portion and pivotably movable relative to the first portion independently of the second portion, wherein the third portion is configured to at least partially engage with the first portion in the closed position of the third portion, the third portion covering the second internal cavity in the closed position of the third portion, thereby the second bridge end portion of the bridge dressing being received between the second internal cavity and the third portion.
2. The first part is, The first outer perimeter and A first inner surface and a first outer surface facing the first inner surface, wherein the first inner surface of the first portion at least partially engages with the second portion in the closed position of the second portion and at least partially engages with the third portion in the closed position of the third portion, A first wall separates the first internal cavity from the second internal cavity, A pair of first raised surfaces that are spaced apart from each other and extend from the first wall toward the first outer circumference of the first portion opposite the second internal cavity, A first recessed surface extending from the first wall toward the first outer circumference of the first portion opposite the second internal cavity, the first recessed surface further extending between the pair of first raised surfaces and disposed below the pair of first raised surfaces with respect to the first internal surface, A pair of first connecting surfaces corresponding to the pair of first raised surfaces, each of the pair of first connecting surfaces extending from the first recessed surface to the corresponding first raised surface of the pair of first raised surfaces, The device further comprises a first peripheral section extending from and surrounding the pair of first raised surfaces, the first recessed surface, and the pair of first connecting surfaces, and further extending to the first inner surface, The system according to claim 1, wherein the pair of first raised surfaces, the first recessed surface, the pair of first connecting surfaces, and the first peripheral section together define the first internal cavity.
3. The system according to claim 2, wherein the channel comprises an open slot extending from the first internal cavity to the second internal cavity through the first wall.
4. The system according to claim 3, wherein the second portion further comprises a second wall disposed adjacent to the third internal cavity and configured to engage with the first wall in the closed position of the second portion, and the open slot is covered by the second wall in the closed position of the second portion.
5. The first part is, The first outer perimeter and A first wall separates the first internal cavity from the second internal cavity, A flat surface extending from the first wall to the first outer periphery of the first portion opposite the first internal cavity, A pair of inclined surfaces extending from opposite sides of the flat surface and inclined with respect to the flat surface, each of the pair of inclined surfaces further comprising a pair of inclined surfaces extending from the first wall to the first outer circumference of the first portion opposite the first internal cavity, The system according to claim 1, wherein the flat surface, the pair of inclined surfaces, and the first wall of the first portion together define a second internal cavity, the second internal cavity opening on the first outer circumference opposite the first wall.
6. The second part above is, The second outer perimeter and A second inner surface and a second outer surface facing the second inner surface, wherein the second inner surface of the second portion engages at least partially with the first portion in the closed position of the second portion, A pair of second raised surfaces spaced apart from each other, A second recessed surface extending between the pair of second raised surfaces, the second recessed surface being disposed below the pair of second raised surfaces with respect to the second inner surface, A pair of second connecting surfaces corresponding to the pair of second raised surfaces, each of the pair of second connecting surfaces having a pair of second connecting surfaces extending from the second recessed surface to the corresponding second raised surface of the pair of second raised surfaces, The device further comprises a second peripheral section extending from and surrounding the pair of second raised surfaces, the second recessed surface, and the pair of second connecting surfaces, and further extending to the second inner surface, The system according to claim 1, wherein the pair of second raised surfaces, the second recessed surface, the pair of second connecting surfaces, and the second peripheral section together define the third internal cavity.
7. The aforementioned casing is A first living hinge pivotably connects the first part to the second part, The system according to claim 1, further comprising: a second living hinge, which is separate from the first living hinge and pivotably connects the first portion to the third portion.
8. The third part mentioned above is: A plurality of first longitudinal recesses spaced apart from the third internal cavity, and a plurality of first longitudinal ribs alternating with the plurality of first longitudinal recesses, wherein the plurality of first longitudinal recesses and the plurality of longitudinal ribs are arranged proximal to the second living hinge, A plurality of second longitudinal recesses spaced apart from the third internal cavity, and a plurality of second longitudinal ribs alternating with the plurality of second longitudinal recesses, wherein the plurality of second longitudinal recesses and the plurality of second longitudinal ribs are arranged distal to the second living hinge, The system according to claim 7, wherein at least one of the plurality of first longitudinal recesses and at least one of the plurality of second longitudinal recesses engage at least partially with the bridge dressing in the closed position of the third portion.
9. The system according to claim 1, further comprising an electronic device unit received within the first internal cavity and the third internal cavity in the closed position of the second portion.
10. The system according to claim 1, wherein the casing further defines a gap between the second and third portions, thereby enabling the second and third portions to pivot independently of each other relative to the first portion.
11. The system according to claim 1, wherein each of the first internal cavity and the third internal cavity comprises a rectangular flat surface and a rectangular peripheral section extending from and surrounding the rectangular flat surface.
12. The system according to claim 1, wherein the area of each of the first internal cavity and the third internal cavity is larger than the area of the second internal cavity.
13. The system according to claim 1, wherein the first internal cavity and the third internal cavity have similar shapes and dimensions.
14. The first part is, A first inner surface and a first outer surface facing the first inner surface, wherein the first inner surface of the first portion at least partially engages with the second portion in the closed position of the second portion and at least partially engages with the third portion in the closed position of the third portion, The system according to claim 1, further comprising: an inclined surface that slopes from the first inner surface toward the first outer surface; and a peripheral section that extends from the first inner surface toward the inclined surface, wherein the peripheral section at least partially surrounds the inclined surface.
15. The aforementioned channel is A first channel portion is disposed in fluid communication with the first internal cavity and extends through the first portion from the first internal cavity to the first outer surface, A second channel portion is disposed in fluid communication with the first channel portion and extends toward the second internal cavity, the second channel portion is disposed on the outer surface of the first channel portion and is inclined with respect to the first channel portion, A third channel portion is disposed in fluid communication with the second channel portion, extends through the first portion toward the second internal cavity, and is inclined with respect to the second channel portion, The system according to claim 14, further comprising: a fourth channel portion that fluidly communicates the third channel portion with the second internal cavity, the fourth channel portion being inclined with respect to the third channel portion.
16. The system according to claim 15, wherein the first channel portion is parallel to the third channel portion, the first channel portion is perpendicular to the second channel portion, and the second channel portion is parallel to the fourth channel portion.
17. The system according to claim 15, wherein the first portion further comprises an intermediate section disposed between the first internal cavity and the second internal cavity, the intermediate section at least partially defining the first inner surface, and the fourth channel portion is a notch formed in the intermediate section and disposed adjacent to the second internal cavity.
18. The system according to claim 15, wherein the first portion extends into the first internal cavity and further comprises a first wedge having a first wedge surface, and the first channel portion extends from the first wedge surface at least partially through the first wedge.
19. The system according to claim 18, wherein the second portion extends from the third internal cavity and further comprises a second wedge having a second wedge surface, the second wedge surface being configured to lock-engage with the first wedge surface of the first wedge in the closed position of the second portion.
20. The system according to claim 15, further comprising a drape, which is coupled to the first outer surface of the first portion and configured to seal and cover the second channel portion of the channel.

Description

Cross-reference of related applications: This application claims priority to U.S. Provisional Patent Application No. 63/445,011, filed on 13 February 2023, which is incorporated herein by reference in its entirety. This disclosure relates, in general, to negative pressure wound occlusion therapy. More specifically, this disclosure relates to a system for negative pressure wound occlusion therapy. Negative pressure wound therapy (NPWT) systems are embodied as occlusive wound treatment systems particularly suited to chronic, refractory wounds and/or complex wounds. Specifically, a reduced pressure (commonly referred to as "negative pressure") compared to the surrounding area is applied to the wound to promote wound healing. Negative pressure causes mechanical contraction of the wound and removal of exudate such as sloughing off, necrotic tissue, and microbial load (e.g., bacteria and biofilm) from the wound, thus promoting granulation tissue formation and accelerating wound healing. In NPWT systems, negative pressure is typically generated by an electromechanical pump that displaces air within a sealed volume around the wound. However, conventional NPWT systems can be cumbersome for outpatients to wear due to their large, rigid therapy units and the stiff tubing connecting the dressing to the electromechanical pump. This can lead to a negative experience for patients. Therefore, there is a need for a system that provides NPWT to wounds while overcoming the aforementioned limitations. In a first aspect, the present disclosure provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a pump and a casing spaced apart from the wound. The casing includes a first portion comprising a first internal cavity configured to at least partially receive the pump, a second internal cavity spaced apart from the first internal cavity and configured to receive the second bridge end portion of the bridge dressing, and a channel for fluid communication between the first internal cavity and the second internal cavity. The casing further includes a second portion pivotably connected to the first portion and configured to at least partially engage with the first portion in the closed position of the second portion. The second portion includes a third internal cavity that aligns with the first internal cavity in the closed position of the second portion, thereby receiving the pump within the first and third internal cavities. The casing further includes a third portion that is pivotably connected to the first portion and pivotably relative to the first portion independently of the second portion. The third portion is configured to at least partially engage with the first portion in the closed position of the third portion. The third portion covers the second internal cavity in the closed position of the third portion, thereby receiving the second bridge end portion of the bridge dressing between the second internal cavity and the third portion. In a second aspect, the present disclosure provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a pump and a casing spaced apart from the wound. The casing includes an internal cavity that receives the pump, an external surface, and a channel at least partially disposed on the external surface and in fluid communication with the internal cavity. The second bridge end portion of the bridge dressing is connected to and disposed on the external surface of the casing. The second bridge end portion is in fluid communication with the channel and covers the channel. In a third aspect, the present disclosure provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a tube comprising a first tube end portion and a second tube end portion opposite to the first tube end portion. The system further includes a first manifold disposed around the first tube end portion and fluidically coupled to the tube. The first manifold is connected to the second bridge end portion of the bridge dressing. The system further includes a second manifold disposed around the second tube end portion and fluidically coupled to the tube. The system further includes a pump and a casing spaced away from the wound. The casing includes an internal cavity receiving the pump, an external surface, and channels at least partially disposed on the external surface and in fluid communication wit