Leak-resistant bandage systems and methods with hydrophilic foam wound insert for fluid-instillation and/or negative-pressure wound therapies
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.
1 . 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 . The check valve assembly of claim 1 , wherein the check valve comprises a duckbill valve.
3 . The check valve assembly of claim 1 , wherein the check valve comprises a ball valve.
4 . The check valve assembly of claim 1 , wherein the second flow path is concentric with the first flow path.
5 . The check valve assembly of claim 1 , wherein the first connection comprises a multi-lumen connection and the second connection comprises a multi-lumen connection, each multi-lumen connection configured to couple at least one lumen of a multi-lumen conduit to the first flow path and at least one lumen of a multi-lumen conduit to the second flow path.
6 . The check valve assembly of claim 1 , wherein the housing comprises a first member having the first connection and a second member having the second connection, the first member coupled to the second member.
7 . The check valve assembly of claim 6 , wherein the check valve is disposed between the first member and the second member.
8 . The check valve assembly of claim 7 , wherein the first member and the second member seal around the check valve when the first member is coupled to the second member.
9 . 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.
10 . The system of claim 9 , wherein the check valve comprises a duckbill valve.
11 . The system of claim 9 , wherein the check valve comprises a ball valve.
12 . The system of claim 9 , wherein the second flow path is concentric with the first flow path.
13 . The system of claim 9 , wherein the first connection comprises a multi-lumen connection and the second connection comprises a multi-lumen connection, each multi- lumen connection configured to couple at least one lumen of a multi-lumen conduit to the first flow path and at least one lumen of a multi-lumen conduit to the second flow path.
14 . The system of claim 9 , wherein the housing comprises a first member having the first connection and a second member having the second connection, the first member coupled to the second member.
15 . The system of claim 14 , wherein the check valve is disposed between the first member and the second member.
16 . The system of claim 15 , wherein the first member and the second member seal around the check valve when the first member is coupled to the second member.
17 . 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.
18 . The check valve assembly of claim 17 , wherein the check valve comprises a duckbill valve.
19 . The check valve assembly of claim 17 , wherein the check valve comprises a ball valve.