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US 2017/0246363 A1Published application
Dynamic Negative-Pressure Therapy With Instillation
AssigneeKCI Licensing, Inc.
InventorsBenjamin Andrew PRATT, James Killingworth SEDDON
Life of this patent
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Abstract
Apparatuses, systems, and methods for instilling a solution to a tissue site are disclosed. In some embodiments, an instillation regulator may be fluidly coupled to a solution source and to a dressing, and the instillation regulator may draw a solution from the solution source during a negative-pressure interval may instill the solution to the dressing during a venting interval.
Claims27
An instillation regulator, comprising:
- a first chamber;
- an inlet check valve fluidly coupled to the first chamber;
- a first outlet check valve fluidly coupled to the first chamber;
- a second chamber;
- a second outlet check valve fluidly coupled to the second chamber;
- a flow limiter fluidly coupled to the second chamber;
- a piston separating the first chamber and the second chamber;
- and
- a spring disposed against the piston in the second chamber to bias the piston.
6 more elements
A system for treating a tissue site, comprising:
- a dressing for placing on the tissue site;
- a negative-pressure source fluidly coupled to the dressing, the negative-pressure source configured for a negative-pressure interval and a venting interval;
- a solution source;
- and
- an instillation regulator fluidly coupled to the solution source and to the dressing, the instillation regulator configured to draw a solution from the solution source during the negative-pressure interval and to instill the solution to the dressing during the venting interval.
2 more elements
A method for treating a tissue site, the method comprising:
- applying a dressing to the tissue site;
- coupling a negative-pressure source to the dressing, the negative-pressure source configured to provide a negative-pressure interval and a venting interval;
- coupling an instillation regulator to the dressing;
- coupling a solution source to the instillation regulator;
- drawing a solution to the instillation regulator from the solution source during the negative-pressure interval;
- and
- instilling the solution from the instillation regulator to the dressing during a venting interval.
4 more elements
An apparatus for instilling a solution to a tissue site, the apparatus comprising:
- a body comprising a negative-pressure port, a vent, and a cavity;
- a head coupled to the body and having an extension, a solution inlet port, and a solution outlet port;
- a piston disposed in the cavity and partitioning the cavity into a first chamber and a second chamber;
- a spring disposed within the second chamber between the piston and the body;
- a first outlet check valve fluidly coupled to the extension between the first chamber and the solution outlet port, wherein the first outlet check valve is configured to be closed by negative pressure in the first chamber;
- a hydrophobic filter disposed in the vent;
- retaining ring coupled to the hydrophobic filter and the vent;
- an inlet check valve fluidly coupled to the first chamber and configured to be opened by negative pressure in the first chamber;
- and
- a second outlet check valve fluidly coupled to the second chamber and configured to be opened by negative pressure delivered to the negative-pressure port.
7 more elements
An apparatus for instilling a solution to a tissue site, the apparatus comprising:
- a body comprising a vent and a cavity;
- a head coupled to the body and comprising an extension, a first fluid port, and a second fluid port;
- a piston disposed in the cavity and partitioning the cavity into a first chamber and a second chamber;
- a spring disposed within the second chamber between the piston and the body;
- a first channel integrally molded in the head;
- a second channel integrally molded in the body and fluidly coupled to the second chamber;
- a passage integrally molded along a length of the body, the passage fluidly coupled to the first channel and to the second channel;
- a first outlet check valve fluidly coupled to the extension between the first chamber and the second fluid port, wherein the first outlet check valve is configured to be closed by negative pressure in the first chamber;
- an inlet check valve fluidly coupled to the first chamber and configured to be opened by negative pressure in the first chamber;
- and
- a second outlet check valve fluidly coupled to the second chamber and configured to be opened by negative pressure in the second channel.
8 more elements
(canceled)
Dependencies are inferred from the claim text.