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US 2020/0268950 A1Published application
Apparatus for topical negative pressure therapy
AssigneeSmith & Nephew, Inc.
InventorsKristian Hall, Edward Yerbury Hartwell
Life of this patent
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Abstract
Apparatus and a method for the provision of TNP therapy to a wound are described, the apparatus comprising: a sealing membrane (504) for covering a wound to form a wound cavity (500); one end of an aspirant conduit (522) operably associated with the wound cavity, vacuum means (524) provided at a distal end of the aspirant conduit for applying a vacuum to the wound cavity; and, air bleed means (510) in fluid communication with the wound cavity. Various embodiments of air bleed port members are also described.
Claims16
(canceled)
A method of providing topical negative pressure therapy to a wound, comprising:
- positioning a sealing membrane over a wound to form a wound cavity positioned beneath the sealing membrane;
- and
- applying negative pressure to the wound cavity via a port positioned over an aperture in the sealing membrane, wherein the port comprises a base portion comprising an opening that coincides with the aperture in the sealing membrane;
- wherein applying the negative pressure to the wound cavity causes:
- air to be drawn into the port through an air bleed positioned in a wall of the port, along a first passage extending within the port, and through the opening in the base portion and the aperture in the sealing membrane into the wound cavity;
- and
- wound exudate fluid and air within the wound cavity to exit the wound cavity through a second passage extending within the port alongside the first passage;
- and
- wherein the air drawn into the port through the air bleed flows into the second passage only by first flowing from the first passage through the opening in the base portion and the aperture in the sealing membrane into the wound cavity.
6 more elements
Dependencies are inferred from the claim text.