Apparatuses and methods for negative pressure wound therapy with switchable fluid management
AssigneeT.J.Smith and Nephew, Limited
InventorsVithushan Jeyakumaran, Camilo Patrick Madriz, Luke Michael Parry, Hannah Bailey Weedon
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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.
Claims21
1-18. (canceled)
An apparatus to provide negative pressure to a wound site, comprising:
- a hydrophilic manifold positioned around a hydrophobic manifold configured to transmit negative pressure to a wound site, the hydrophilic manifold configured to prevent fluid from the wound site from traveling to the hydrophobic manifold when negative pressure is applied and allow fluid travel from the wound site to the hydrophobic manifold when negative pressure is not being applied.
A method for providing negative pressure to a wound site, comprising:
- positioning a wound dressing over a wound, the wound dressing comprising a hydrophilic manifold positioned around a hydrophobic manifold;
- and
- applying negative pressure to the wound site via the wound dressing, the hydrophilic manifold configured such that fluid from the wound site travels to the hydrophobic manifold when negative pressure is applied but fluid travel from the wound site to the hydrophobic manifold is prevented when negative pressure is not being applied.
Dependencies are inferred from the claim text.