Foam wound inserts with high-density and low-density regions, methods for making wound inserts, wound-treatment methods, and wound-treatment systems.

A porous wound dressing for use in negative-pressure therapy is proposed. The wound dressing has an outer edge which defines a substantially oval or rectangular outer shape of the wound dressing with a major axis and a minor axis. The wound dressing has one or more incisions or perforations which together form one or more arc-shaped lines and serve for cutting the wound dressing to size in order to adapt the wound dressing to the shape and/or size of a wound. The one or more arc-shaped lines each extend asymmetrically with respect to the major axis and/or to the minor axis and each enclose, together with a portion of the outer edge, a segment of the wound dressing that is designed for separation from the wound dressing.

A low-profile dressing interface or connector may comprise at least two side-by-side fluid pathways fluidly coupled to a recessed space of the connector, one for providing negative pressure to a tissue interface and the other for sensing negative pressure within the recessed space adjacent the tissue interface. The apparatus may comprise a top layer having a plurality of closed cells with tapered sidewalls. The apparatus may also comprise a base layer forming a sealed space between the top layer and the base layer. The base layer may further include a plurality of closed cells having tapered sidewalls. The apparatus may then further comprise a barrier coupled between the top layer and the base layer to form two fluid pathways within the sealed space.

A negative pressure wound therapy system is configured for treating multiple wounds on a patient's body. The system preferably includes a source of negative air pressure, an air source, a first fluid collection volume, and a second fluid collection volume. The source of negative air pressure is in fluid communication with the first fluid collection volume, the first collection volume is in fluid communication with the second fluid collection volume, and the second fluid collection volume is in fluid communication with the air source, so that the source of negative air pressure, the first fluid collection volume, the second fluid collection volume, and the air source are fluidly connected in series.

A suction-based medical dressing assembly and method of dermal irrigation provides a flexible tube that is fluidly coupled to at least two bifurcated tube portions defined by a plurality of apertures. The tube has a proximal end opening for discharging ambient fluid. The length of the bifurcated tube portions is surrounded by an absorbent gauze material covered substantially with an occlusive sheet material, and having an adhesive strip thereon. A vacuum assembly creates a negative pressure in the tubes. The ambient fluid is absorbed by the absorbent material, and the negative pressure sucks the fluid through the apertures in the bifurcated tube portions for discharge through the opening in the tube. In operation, a patient applies the adhesive side of the occlusive device to the skin where liquid removal is desired and activates the vacuum-inducing source, thereby causing fluid runoff from the patient to be effectively removed for disposal.

Some arrangements disclosed herein relate to devices and methods for treating a wound, comprising applying negative pressure to the wound through a cover applied over a wound, monitoring the internal pressure in the wound, and controlling the closure of the wound by controlling the amount that a wound packing material positioned under the cover collapses within the wound based on the monitored internal pressure. The wound packing material collapse can be controlled to ensure that the monitored internal pressure does not exceed a threshold value. Additionally, some embodiments or arrangements disclosed herein relate to a visualization element to visualize a location of a wound surface. The visualization element can comprise a radiopaque member that is configured to be positioned on or adjacent to a surface of an open wound.

Wound pads for use, e.g., as cavity wound fillers, having at least one incomplete cut being made of a plurality of cut segments and a plurality of connection regions are described. The wound pads can be useful in negative pressure would therapy systems and kits.

A method for detecting a state of a dressing includes measuring air pressure within a tube. The tube provides airflow between a pump device and the dressing. The method also includes determining whether the air pressure differs from a pressure setpoint by more than a preset limit, and running the pump to cause the air pressure to approach the pressure setpoint. In response to a determination that the air pressure does not differ from the pressure setpoint by more than the preset limit, the method also includes determining a duration of time since a last running of the pump, determining whether the duration of time since the last running of the pump exceeds a threshold duration, and, in response to a determination that the duration of time since the last running of the pump exceeds the threshold duration, generating an alert that indicates that the dressing is full.

A dressing for treating a tissue site may include a base layer, a sealing member, a first and a second wicking layer, and an absorbent layer. The base layer may have a plurality of apertures and may be adapted to cover the tissue site. The sealing member and the base layer may define an enclosure. The first and the second wicking layer may each be disposed in the enclosure with the absorbent layer positioned between the first and the second wicking layer. A conduit comprised of an absorbent material that is vapor permeable and liquid impermeable may be in fluid communication with the dressing for providing reduced pressure to the dressing. Other dressings, systems, and methods are disclosed.

A wound therapy system includes a negative pressure circuit configured to apply negative pressure to a wound, a pump fluidly coupled to the negative pressure circuit and operable to control the negative pressure within the negative pressure circuit, a pressure sensor configured to measure the negative pressure within the negative pressure circuit or at the wound and a controller communicably coupled to the pump and the pressure sensor. The controller is configured to execute a pressure testing procedure including applying a pressure stimulus to the negative pressure circuit, observe a dynamic pressure response of the negative pressure circuit to the pressure stimulus using pressure measurements recorded by the pressure sensor, and estimate a wound volume of the wound based on the dynamic pressure response.