INTELLIGENT THERAPY SYSTEM WITH EVAPORATION MANAGEMENT
First Claim
1. A system for treating a tissue site, comprising:
- a dressing, comprising;
a manifold adapted to be positioned adjacent the tissue site,a retention pouch positioned adjacent the manifold,a sealing member having an exterior surface and adapted to cover the retention pouch and the manifold to provide a sealed space between the tissue site and the sealing member, anda conduit interface coupled to the sealing member, the conduit interface comprising;
an evaporative flow conduit in fluid communication with the exterior surface of the sealing member,a variable pressure conduit having an inlet in fluid communication with the sealed space and positioned between the retention pouch and the sealing member,a reduced-pressure conduit having an inlet in fluid communication with the sealed space, anda manifold pressure conduit having an inlet in fluid communication with the manifold and positioned between the retention pouch and the manifold; and
a therapy device, comprising;
a fluid flow source in fluid communication with the evaporative flow conduit,a variable pressure sensor in fluid communication with the variable pressure conduit,a reduced-pressure source in fluid communication with the reduced-pressure conduit,a manifold pressure sensor in fluid communication with the manifold pressure conduit, anda controller adapted to receive a variable pressure signal from the variable pressure sensor and a manifold pressure signal from the manifold pressure sensor, wherein the controller is operable to provide a reduced pressure output from the reduced-pressure source when the manifold pressure signal is greater than a target reduced pressure, and wherein the controller is operable to increase a fluid flow rate from the fluid flow source in response to an increase in a pressure differential between the variable pressure signal and the manifold pressure signal.
5 Assignments
0 Petitions
Accused Products
Abstract
Dressings, systems, and methods are disclosed that, in some embodiments, relate to treating a tissue site. In one embodiment, a dressing may include a manifold, a retention pouch, a sealing member, and a conduit interface. The manifold may be adapted to distribute reduced pressure to the tissue site, and the retention pouch may be adapted to retain and manage fluid extracted from the tissue site. The sealing member may cover the retention pouch and the manifold to provide a sealed space with the tissue site. The conduit interface may be in fluid communication with the sealed space and an exterior surface of the sealing member. The dressing may be utilized with a therapy device operable to control reduced pressure in the dressing and fluid flow over the sealing member.
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Citations
50 Claims
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1. A system for treating a tissue site, comprising:
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a dressing, comprising; a manifold adapted to be positioned adjacent the tissue site, a retention pouch positioned adjacent the manifold, a sealing member having an exterior surface and adapted to cover the retention pouch and the manifold to provide a sealed space between the tissue site and the sealing member, and a conduit interface coupled to the sealing member, the conduit interface comprising; an evaporative flow conduit in fluid communication with the exterior surface of the sealing member, a variable pressure conduit having an inlet in fluid communication with the sealed space and positioned between the retention pouch and the sealing member, a reduced-pressure conduit having an inlet in fluid communication with the sealed space, and a manifold pressure conduit having an inlet in fluid communication with the manifold and positioned between the retention pouch and the manifold; and a therapy device, comprising; a fluid flow source in fluid communication with the evaporative flow conduit, a variable pressure sensor in fluid communication with the variable pressure conduit, a reduced-pressure source in fluid communication with the reduced-pressure conduit, a manifold pressure sensor in fluid communication with the manifold pressure conduit, and a controller adapted to receive a variable pressure signal from the variable pressure sensor and a manifold pressure signal from the manifold pressure sensor, wherein the controller is operable to provide a reduced pressure output from the reduced-pressure source when the manifold pressure signal is greater than a target reduced pressure, and wherein the controller is operable to increase a fluid flow rate from the fluid flow source in response to an increase in a pressure differential between the variable pressure signal and the manifold pressure signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for treating a tissue site, comprising:
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a dressing, comprising; a manifold having a first side and a second side, the first side facing opposite the second side, wherein the first side of the manifold is adapted to be positioned adjacent the tissue site, a retention pouch adapted to retain a fluid and to be positioned adjacent the second side of the manifold, the retention pouch comprising an absorbent core encapsulated between a first permeable layer and a second permeable layer, wherein the retention pouch further comprises an expandable portion and a recess, a sealing member having an exterior surface and adapted to cover the retention pouch and the manifold to provide a sealed space between the sealing member and the tissue site, and a conduit interface coupled to the sealing member, the conduit interface comprising; an evaporative flow conduit in fluid communication with the exterior surface of the sealing member, a variable pressure conduit having an inlet in fluid communication with the sealed space that is substantially aligned with and separated from the expandable portion of the retention pouch, a reduced-pressure conduit having an inlet in fluid communication with the sealed space that is substantially aligned with and separated from the recess in the retention pouch, and a manifold pressure conduit having an inlet in fluid communication with the manifold and positioned between the retention pouch and the second side of the manifold; and a therapy device, comprising; a fluid flow source in fluid communication with the evaporative flow conduit, a variable pressure sensor in fluid communication with the variable pressure conduit, a reduced-pressure source in fluid communication with the reduced-pressure conduit, a manifold pressure sensor in fluid communication with the manifold pressure conduit, and a controller adapted to receive a variable pressure signal from the variable pressure sensor and a manifold pressure signal from the manifold pressure sensor, wherein the controller is operable to provide a reduced pressure output from the reduced-pressure source when the manifold pressure signal is greater than a target reduced pressure, and wherein the controller is operable to increase a fluid flow rate from the fluid flow source in response to an increase in a pressure differential between the variable pressure signal and the manifold pressure signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A dressing for treating a tissue site, comprising:
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a manifold comprising a fluid permeable, hydrophobic material and having a first side and a second side, the first side adapted to be positioned adjacent the tissue site; a retention pouch adapted to be positioned adjacent the second side of the manifold and to retain a fluid, the retention pouch comprising an expandable portion and a recess, wherein the expandable portion expands to retain the fluid and the recess is substantially precluded from expansion; a sealing member having an exterior surface and adapted to cover the retention pouch and the manifold to provide a sealed space between the tissue site and the sealing member, wherein a portion of the sealing member is comprised of a vapor-permeable material; and a conduit interface coupled to the sealing member, the conduit interface comprising; an evaporative flow conduit in fluid communication with the exterior surface of the sealing member, a variable pressure conduit having an inlet in fluid communication with the sealed space and positioned in a spaced relationship relative to the expandable portion of the retention pouch, a reduced-pressure conduit having an inlet in fluid communication with the sealed space and positioned in a spaced relationship relative to the recess in the retention pouch, and a manifold pressure conduit having an inlet in fluid communication with the manifold and positioned between the retention pouch and the manifold. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. A method of treating a tissue site, the method comprising:
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positioning a manifold adjacent the tissue site; positioning a retention pouch adjacent the manifold, the retention pouch comprising an expandable portion for retaining fluid; covering the retention pouch and the manifold with a sealing member to provide a sealed space between the tissue site and the sealing member, the sealing member having an exterior surface; measuring a manifold pressure between the manifold and the retention pouch; applying reduced pressure to the sealed space until the manifold pressure reaches a target reduced pressure; measuring a variable pressure between the expandable portion of the retention pouch and the sealing member; calculating a differential pressure between the manifold pressure and the variable pressure; and providing a fluid flow over the exterior surface of the sealing member, the fluid flow having a flow rate substantially corresponding to the differential pressure, wherein the fluid flow evaporates fluid extracted from the tissue site. - View Dependent Claims (46, 47, 48, 49, 50)
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Specification