Wound treatment device employing negative pressure
Inventors
Eriksson, Elof • Allison, W. Robert • Baker, Christian
Assignees
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Publication Number
US-9717829-B2
Publication Date
2017-08-01
Expiration Date
Abstract
The present invention provides a device for wound treatment, comprising a chamber that includes an inner surface and defines a treatment space, the chamber being made of a flexible, impermeable material. The device further includes a plurality of structures configured to exert mechanical stress on a wound, the plurality of structures intruding from the inner surface of the chamber into the treatment space. The device further includes a tube having a first end connected to the chamber, the tube being in fluid communication with the treatment space so as to enable at least one selected from the group of applying negative pressure to the treatment space and applying a therapeutic agent.
Core Innovation
A wound treatment device includes a chamber made of an impermeable material. The chamber has an inner surface that defines a plurality of structures configured to directly contact a wound and to create pathways for distributing negative pressure between the inner surface and the wound, while a sealing portion along with the inner surface defines a sealed treatment space around the wound. The plurality of structures intrude into the sealed treatment space from the inner surface of the chamber.
The device includes a tube with a first end connected to the chamber. The tube is in fluid communication with the sealed treatment space so as to enable at least one of applying negative pressure to the sealed treatment space and applying a therapeutic agent to the wound. The chamber does not include a porous insert.
In another embodiment, a wall made of an impermeable material is sufficiently thin to conform to a wound and includes an interior surface. The interior surface defines a plurality of embossed structures configured to directly contact the wound and to create pathways for distributing negative pressure between the interior surface and the wound. A base coupled to the wall includes an adhesive arranged for sealing engagement with a patient's skin to form a sealed treatment space around the wound, and a portal supported by the wall is in fluid communication with the sealed treatment space. The device does not include a porous insert.
Claims Coverage
The document provides two independent claims. Across these claims, the central inventive theme is creating pathways for distributing negative pressure within a sealed treatment space using wound-contacting intruding structures, while excluding a porous insert.
Impermeable chamber with intruding wound-contacting structures
A chamber made of an impermeable material with an inner surface defining a plurality of structures configured to directly contact a wound and to create pathways for distributing negative pressure between the inner surface and the wound.
Sealed treatment space formed by sealing portion and intruding structures
A sealing portion along with the inner surface defines a sealed treatment space around the wound, where the plurality of structures intrude into the sealed treatment space from the inner surface of the chamber.
Tube communicating with sealed treatment space for negative pressure and therapeutic agent
A tube having a first end connected to the chamber, the tube being in fluid communication with the sealed treatment space so as to enable at least one of applying negative pressure to the sealed treatment space and applying a therapeutic agent to the wound.
No porous insert in the chamber
The chamber does not include a porous insert.
Conformable impermeable wall with embossed structures
A wall made of an impermeable material sufficiently thin to conform to a wound, the interior surface defining a plurality of embossed structures configured to directly contact the wound and to create pathways for distributing negative pressure between the interior surface and the wound.
Adhesive base forming sealed treatment space
A base coupled to the wall and including an adhesive arranged for sealing engagement with a patient's skin to form a sealed treatment space around the wound, wherein the plurality of structures intrude into the sealed treatment space from the interior surface of the wall.
Portal in fluid communication for negative pressure and therapeutic agent
A portal supported by the wall and being in fluid communication with the sealed treatment space so as to enable at least one of applying negative pressure to the treatment space and applying a therapeutic agent to the wound.
No porous insert in the device
The device does not include a porous insert.
Both independent claims cover negative pressure wound treatment devices using an impermeable chamber or a conformable impermeable wall whose inner surface includes intruding wound-contacting structures that create pathways for distributing negative pressure within a sealed treatment space. Each independent claim requires a fluid interface configured for at least one of applying negative pressure and applying a therapeutic agent, and each independently excludes a porous insert.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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