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Publication Number
US-12642904-B2
Publication Date
2026-06-02
Expiration Date
Abstract
The present invention provides an apparatus comprising a wound dressing connected to a fluid container via a pump, wherein the wound dressing is in communication with a mechanical pressure control valve, the fluid container is provided with an inlet and an outlet. Also provided are (i) flexible fluid containers comprising of at least two layers of film with an integrated vent, (ii) wound dressings and (iii) a multi-compartment wound fluid container comprising at least two internal compartments and provided with an outlet and an inlet, in which the container comprises a microporous fluid separator which divides the at least two internal compartments, wherein the microporous fluid separator permits gas flow between the compartments and prevents fluid flow to the outlet of the container. Other apparatus provided comprises a means for detecting the level of fluid within a multi-compartment wound fluid container as described. The invention also provides a system for applying a sub-atmospheric pressure to a wound dressing on a patient using devices and apparatus of the invention and methods of treatment of wounds using such apparatus, devices and systems of the invention.
Core Innovation
The invention is a flexible wound fluid apparatus comprising a flexible wound fluid container with an inlet, an outlet, at least two layers of polymeric film, and a vent. A flexible strap, retaining plate, or partly rigid housing constrains the container’s expansion to a pre-determined level. At that level, the container reacts against a fixed surface and triggers a pressure switch to indicate that the container is full.
The problem being solved is not explicitly described in the supplied patent content because no background section is provided. The described apparatus provides an indication that the flexible wound fluid container is full when its expansion reaches the constrained level. The supplied content does not state a separate problem statement.
Claims Coverage
The supplied claims identify one independent claim with one inventive feature, covering a flexible wound fluid apparatus with constrained container expansion and pressure-switch indication of a full container.
Constrained container expansion and full indication
A flexible wound fluid container comprising an inlet, an outlet, and at least two layers of polymeric film with a vent has its expansion constrained to a pre-determined level by a flexible strap, a retaining plate, or a partly rigid housing. When the container is constrained to that level, it reacts against a fixed surface having a pressure switch and triggers the switch to indicate that the container is full.
The independent claim covers a vented flexible wound fluid container whose expansion is limited by one of three specified structures and whose reaction against a fixed surface triggers a pressure switch indicating that the container is full.
Stated Advantages
Not explicitly described in patent.
Documented Applications
The disclosed apparatus is described in the context of negative pressure wound therapy.
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