Apparatus for topical negative pressure therapy
AssigneeSmith & Nephew, Inc.
InventorsKristian Hall, Edward Yerbury Hartwell
Life of this patent
Estimating the term…
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.
Claims20
A system for providing negative pressure comprising:
- a vacuum pump;
- a negative pressure conduit configured to connect to the vacuum pump;
- a topical dressing;
- and
- a port member comprising a housing, the housing comprising:
- a base portion configured to be attached to the topical dressing;
- an aperture in the base portion configured to communicate with a wound cavity under the topical dressing, wherein the port member is configured to be attached to the topical dressing;
- a raised portion formed above the base portion and above the aperture, the raised portion being substantially domed;
- a connector portion extending from the raised portion, and wherein the connector portion is configured to connect to the negative pressure conduit;
- a passage within the housing, the passage having a distal end located at the aperture and a proximal end located at the connector portion;
- and
- an aeration orifice configured to bleed ambient air into the wound cavity when the port member is attached to the topical dressing, the aeration orifice formed on the housing.
A port member for providing negative pressure, the port member comprising:
- a housing, comprising:
- a base portion configured to be attached to a topical dressing;
- an aperture in the base portion configured to communicate with a wound cavity under the topical dressing, wherein the port member is configured to be attached to the topical dressing;
- a raised portion formed above the base portion and above the aperture, the raised portion being substantially domed;
- a connector portion extending from the raised portion, and wherein the connector portion is configured to connect to a negative pressure conduit;
- a passage within the housing, the passage having a distal end located at the aperture and a proximal end located at the connector portion;
- and
- an aeration orifice configured to bleed ambient air into the wound cavity when the port member is attached to the topical dressing, the aeration orifice formed on the housing.
Dependencies are inferred from the claim text.