Abstract: A negative pressure wound therapy device can include a negative pressure source configured to be connected, via a fluid flow path, to a wound, a valve positioned in the fluid flow path and configured to, in an open state, permit supply of negative pressure from the negative pressure source upstream of the valve and, in a closed state, block supply of negative pressure from the negative pressure source upstream of the valve, a flow restrictor positioned in the fluid flow path, and a pressure sensor configured to measure a pressure differential across the flow restrictor. The device can include control circuitry configured to, in a normal operational mode, cause the valve to be in the open state and, in a test mode, perform at least one of a leak test, a flow test, or an excessive pressure test.

Abstract: A negative pressure wound therapy device can include a negative pressure source configured to be connected, via a fluid flow path, to a wound, a valve positioned in the fluid flow path and configured to, in an open state, permit supply of negative pressure from the negative pressure source upstream of the valve and, in a closed state, block supply of negative pressure from the negative pressure source upstream of the valve, a flow restrictor positioned in the fluid flow path, and a pressure sensor configured to measure a pressure differential across the flow restrictor. The device can include control circuitry configured to, in a normal operational mode, cause the valve to be in the open state and, in a test mode, perform at least one of a leak test, a flow test, or an excessive pressure test.

Abstract: Disclosed embodiments related to a drape for use in a negative pressure wound therapy (NPWT). The drape comprises a cover layer, a spacer layer, and a wound contact layer. The drape further comprises a support layer and a reinforcement member. A negative pressure wound therapy (NPWT) apparatus, such as a suction adapter or a wound dressing may be coupled to the drape applied on a wound. The drape may withstand multiple coupling and decoupling of NPWT apparatuses, and can be stay on the wound during coupling and decoupling of NPWT apparatuses. The drape may be coupled with two or more different types of NPWT apparatuses.

Abstract: Disclosed embodiments related to a drape for use in a negative pressure wound therapy (NPWT). The drape comprises a cover layer, a spacer layer, and a wound contact layer. The drape further comprises a support layer and a reinforcement member. A negative pressure wound therapy (NPWT) apparatus, such as a suction adapter or a wound dressing may be coupled to the drape applied on a wound. The drape may withstand multiple coupling and decoupling of NPWT apparatuses, and can be stay on the wound during coupling and decoupling of NPWT apparatuses. The drape may be coupled with two or more different types of NPWT apparatuses.

Abstract: Disclosed embodiments relate to wound therapy apparatuses and methods for use in negative pressure wound therapy (NPWT). Such wound therapy apparatuses and methods may reduce maceration during NPWT. The wound therapy apparatus may include a porous hydrophobic layer surrounded by a hydrophilic ring. The hydrophilic ring may serve to prevent passage of liquid while negative pressure is applied to the wound, but allow liquid passage to an absorbent ring when negative pressure is no longer applied. A transmission layer may also be included, underlying the absorbent layer.

Abstract: Disclosed herein are embodiments of a wound treatment apparatus with electronic components integrated within a wound dressing. In some embodiments. a wound dressing apparatus can comprise a wound dressing. The wound dressing can comprise an absorbent material. an electronics unit comprising a negative pressure source. the electronics unit integrated within the wound dressing and at least partially encapsulated by one or more layers of a flexible film. At least one of the layers of the flexible film can comprise a window or aperture configured to permit fluid communication between the absorbent material and the negative pressure source.

Abstract: A negative pressure device having a negative pressure source, a canister in fluid communication with the negative pressure source, a conduit the can couple with a wound dressing to provide negative pressure to a space beneath the wound dressing. Some arrangements of the negative pressure source can have a first noise reduction chamber and a second noise reduction chamber downstream of and in fluid communication with an outlet of a pump. The first and second noise reduction chambers can be configured to reduce noise generated by the pump and/or a level of pressure pulses in the fluid that is advanced through the negative pressure source.

Abstract: Disclosed embodiments relate to wound therapy apparatuses and methods for use in negative pressure wound therapy (NPWT). Such wound therapy apparatuses and methods may reduce maceration during NPWT. The wound therapy apparatus may include a porous hydrophobic layer surrounded by a hydrophilic ring. The hydrophilic ring may serve to prevent passage of liquid while negative pressure is applied to the wound, but allow liquid passage to an absorbent ring when negative pressure is no longer applied. A transmission layer may also be included, underlying the absorbent layer.

Abstract: Disclosed herein are several embodiments of a negative pressure system and methods of using the same in the treatment of wounds. Some embodiments are directed to a system that utilizes a wound dressing with at least three layers. These embodiments are directed toward improved distribution of negative pressure to a wound and periwound site surrounding the wound.

Abstract: Disclosed embodiments related to a drape for use in a negative pressure wound therapy (NPWT). The drape comprises a cover layer, a spacer layer, and a wound contact layer. The drape further comprises a support layer and a reinforcement member. A negative pressure wound therapy (NPWT) apparatus, such as a suction adapter or a wound dressing may be coupled to the drape applied on a wound. The drape may withstand multiple coupling and decoupling of NPWT apparatuses, and can be stay on the wound during coupling and decoupling of NPWT apparatuses. The drape may be coupled with two or more different types of NPWT apparatuses.

Abstract: A negative pressure wound therapy device can include a negative pressure source configured to be connected, via a fluid flow path, to a wound, a valve positioned in the fluid flow path and configured to, in an open state, permit supply of negative pressure from the negative pressure source upstream of the valve and, in a closed state, block supply of negative pressure from the negative pressure source upstream of the valve, a flow restrictor positioned in the fluid flow path, and a pressure sensor configured to measure a pressure differential across the flow restrictor. The device can include control circuitry configured to, in a normal operational mode, cause the valve to be in the open state and, in a test mode, perform at least one of a leak test, a flow test, or an excessive pressure test.

Abstract: Disclosed embodiments relate to wound therapy apparatuses and methods for use in negative pressure wound therapy (NPWT). Such wound therapy apparatuses and methods may reduce maceration during NPWT. The wound therapy apparatus may include a porous hydrophobic layer surrounded by a hydrophilic ring. The hydrophilic ring may serve to prevent passage of liquid while negative pressure is applied to the wound, but allow liquid passage to an absorbent ring when negative pressure is no longer applied. A transmission layer may also be included, underlying the absorbent layer.