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US 12,622,814 B2Granted
Leak-resistant bandage systems and methods with hydrophilic foam wound insert for fluid-instillation and/or negative-pressure wound therapies
AssigneeSolventum Intellectual Properties Company
InventorsJoanna Payne Perkins, Paul S. Slack, Kevin Higley, Kenneth Mitchel Knowles, Aidan Marcus Tout
Life of this patent
Estimating the term…
Abstract
Wound treatment systems and methods (e.g., having hydrophilic wound inserts), such as for negative-pressure and/or fluid-installation wound therapies. Some embodiments include a check-valve assembly between a wound dressing and a vacuum source.
Claims19
A check-valve assembly comprising:
- a housing having a first connection and a second connection;
- a first flow path extending from the first connection to the second connection in the housing and configured to be fluidly coupled to a source of negative pressure;
- a second flow path distinct from the first flow path, the second flow path extending from the first connection to the second connection in the housing and configured to fluidly couple a pressure sensor and a dressing;
- and
- a check valve disposed in the first flow path in the housing, the check valve configured to permit fluid to pass through the first flow path in a first direction, prevent backflow of fluids in a second direction, and prevent pressure in the first direction from exceeding atmospheric pressure.
2 more elements
A system for treating a tissue site comprising:
- a dressing configured to be disposed over the tissue site;
- a vacuum source configured to be fluidly coupled to the dressing;
- a canister fluidly configured to be fluidly coupled between the dressing and the vacuum source;
- a fluid source configured to be fluidly coupled to the dressing;
- and
- a check valve assembly having:
- a housing having a first connection and a second connection;
- a first flow path and a second flow path extending from the first connection to the second connection in the housing, the second flow path being distinct from the first flow path;, the check valve assembly having
- a check valve disposed in the first flow path in the housing, the check valve configured to permit fluid to pass through the first flow path in a first direction, prevent backflow of fluids in a second direction, and prevent pressure in the first direction from exceeding atmospheric pressure.
6 more elements
A check-valve assembly having a housing, the check valve assembly comprising:
- a first flow path disposed in the housing and configured to be fluidly coupled to a source of negative pressure;
- a second flow path distinct from and concentric with the first flow path, the second flow path disposed in the housing and configured to fluidly couple a pressure sensor and a dressing;
- and
- a check valve disposed in the first flow path in the housing, the check valve configured to permit fluid to pass through the first flow path in a first direction, prevent backflow of fluids in a second direction, and prevent pressure in the first direction from exceeding atmospheric pressure.
1 more element
Dependencies are inferred from the claim text.