Smith + Nephew

Smith Nephew Asia Pacific Pte. Limited

T.j.smith and Nephew, Limited

Gendrive Limited

Smith & Nephew, Inc.

Damyn Musgrave

William Kelbie

Joseph William Robinson

Ben Alan Askem

Mark Richard Hesketh

Victoria Beadle

John Philip Gowans

Allan Kenneth Frazer Grugeon Hunt

Daniel Lee Steward

Felix Clarence Quintanar

Roberto Damiao Da Costa Rodrigues

Matthew Ash

Edward Yerbury Hartwell

Frederick Jethro Harrison

Reece Knight

Grant West

Yeswanth Gadde

Nigel Jakeman

Molly Northcote

Gergely Melis

Mark Hesketh

Embodiments of negative pressure wound therapy devices, systems and methods are disclosed. In some embodiments, a negative pressure wound therapy device includes a negative pressure source configured to provide negative pressure to a wound via a fluid flow path, a power source configured to power the negative pressure source, and a charging circuit configured to monitor a temperature of the power source and charge the power source. The charging circuit can be further configured to in response to a determination that the temperature of the power source is below a temperature threshold, provide a first charging power to the power source. The charging circuit can be further configured to in response to a determination that the temperature of the power source has reached or is above the temperature threshold, lower the first charging power to a second charging power.

Power source charging for negative pressure wound therapy apparatus

Disclosed embodiments relate to apparatuses and methods for wound treatment. In some embodiments, a wound dressing apparatus can comprise a wound contact layer, a first area and a second area over the wound contact layer, and a cover layer configured to cover the wound contact layer, the first area, and the second area. The first area can comprise a spacer layer and an absorbent layer over the spacer layer. The second area can comprise an electronics cassette or cradle comprising a negative pressure source and/or electronic components.

Negative pressure wound treatment apparatuses and methods with integrated electronics

Disclosed embodiments relate to apparatuses and methods for wound treatment. In some embodiments, a negative pressure source is incorporated into a wound dressing apparatus so that the wound dressing and the negative pressure source are part of an integral or integrated wound dressing structure that applies the wound dressing and the negative pressure source simultaneously to a patient's wound. The negative pressure source and/or electronic components may be positioned between a wound contact layer and a cover layer of the wound dressing. The negative pressure source and/or electronic components may be separated and/or partitioned from an absorbent area of the dressing. A switch may be integrated with the wound dressing to control operation of the wound dressing apparatus. A connector may be direct air from an outlet of the negative pressure source to the environment. A non-return valve may inhibit back flow of air into the wound dressing.

Wound treatment apparatuses and methods with negative pressure source integrated into wound dressing

A negative pressure wound therapy system can include a source of negative pressure negative pressure configured to aspirate fluid from a wound covered by a wound dressing and electronic circuitry with a power source, boost converter circuitry configured to receive power at a first level from the power source and supply power at a second level to the source of negative pressure, the second level being higher than the first level, and a controller configured to, in response to a determination that a capacity of the power source is being depleted, cause the boost converter circuitry to supply power to the source of negative pressure at a third level lower than the second level. The controller can further lower a target negative pressure level associated with negative pressure provided by the source of negative pressure.

Systems and methods for extending operational time of negative pressure wound treatment apparatuses

Embodiments of negative pressure wound therapy systems and methods are disclosed. In one embodiment, an apparatus includes a driving circuit that supplies a driving signal to a negative pressure source to cause the negative pressure source to provide negative pressure via a fluid flow path to a wound dressing. The apparatus furthers include a controller that adjusts a frequency of the driving signal supplied by the driving circuit according to a comparison of a previous magnitude and a subsequent magnitude of the driving signal while the negative pressure source provides negative pressure. The transfer of power to the negative pressure source can thereby be tuned to maximize an amount of power transferred to the negative pressure source.

Optimizing power transfer to negative pressure sources in negative pressure therapy systems

Disclosed embodiments relate to apparatuses and methods for wound treatment. In some embodiments, a wound dressing apparatus can comprise a wound contact layer, a spacer layer, an absorbent layer positioned on the spacer layer, an electronics unit comprising a negative pressure source and/or electronic components, wherein the absorbent layer comprises a recess configured to receive the electronics unit and the absorbent layer is configured to be in fluid communication with the electronics unit, and a cover layer configured to cover and form a seal over the wound contact layer, the spacer layer, the absorbent layer, and the electronics unit.

Disclosed embodiments relate to apparatuses and methods for wound treatment. In some embodiments, a negative pressure source is incorporated into a wound dressing apparatus so that the wound dressing and the negative pressure source are part of an integral or integrated wound dressing structure that applies the wound dressing and the negative pressure source simultaneously to a patient's wound. The negative pressure source and/or electronic components may be positioned between a wound contact layer and a cover layer of the wound dressing. A component may be used to prevent wound exudate from contacting the inlet of the negative pressure source.

Wound dressings and methods of use with integrated negative pressure source having a fluid ingress inhibition component

Embodiments of negative pressure wound therapy systems and methods are disclosed. In one embodiment, an apparatus includes a wound dressing, negative pressure source, user interface, sensor, and control circuitry. The user interface can receive an activation input. The sensor can detect whether the wound dressing is positioned over a wound. The control circuitry can cause supply of negative pressure in response to receipt of the activation input and a determination that the sensor detects that the wound dressing is positioned over the wound. In addition, the control circuitry can prevent supply of negative pressure in response to a determination that the sensor does not detect that the wound dressing is positioned over the wound.

Negative pressure wound therapy device activation and control

Disclosed herein are systems and methods for safe operation of a wound treatment apparatus with electronic components integrated on or within a wound dressing. In some embodiments, the electronic components include a power source, an isolation circuit, a controller, a capacitor, and a negative pressure source. The isolation circuit provides multiple activation states with at least one state preventing application of power to the other electronic components capable of storing electrical energy, thereby providing a safe operation of the apparatus. For example, sterilization of the apparatus can be performed safely.

Safe operation of integrated negative pressure wound treatment apparatuses

Embodiments of negative pressure wound therapy systems and methods are disclosed. In one embodiment, an apparatus includes a source of negative pressure, a coupling circuit, a driving circuit, and a controller. The driving circuit supplies a driving signal to the source of negative pressure via the coupling circuit to cause the source of negative pressure to provide negative pressure to a wound dressing. The coupling circuit includes an inductive reactance that limits a rate of change over time of the driving signal. The controller controls the driving signal supplied by the driving circuit.

Growing community of inventors

Cottenham, United Kingdom

Damyn Musgrave