Customizable Composite Dressings For Improved Granulation And Reduced Maceration With Negative-Pressure Treatment
A dressing may include a cover including a non-porous film, a manifold adhered to the non-porous film, a tissue interface including a hydrophobic film adhered to the manifold, and a plurality of fluid restrictions in the hydrophobic film adjacent to the manifold. The cover, the manifold, and the tissue interface each have an exposed perimeter. The dressing may also include an attachment device configured to seal the exposed perimeter of each of the cover, the manifold, and the tissue interface.
1 . A dressing for use with negative-pressure treatment, the dressing comprising:
a cover comprising a non-porous film;
a manifold adhered to the non-porous film; and
a fluid control layer adhered to the manifold;
wherein the manifold and the fluid control layer each have an exposed perimeter.
2 . The dressing of claim 1 , further comprising a fluid port coupled to the cover and fluidly coupled to the manifold through the cover.
3 . The dressing of claim 1 , further comprising an attachment device configured to seal the exposed perimeter of the manifold and the fluid control layer.
4 . The dressing of claim 1 , wherein the fluid control layer comprises a plurality of fluid restrictions, and further comprising a gel layer having a plurality of apertures at least partially aligned with the fluid restrictions.
5 . The dressing of claim 4 , further comprising a fluid port coupled to the cover and fluidly coupled to the manifold through the cover.
6 . The dressing of claim 5 , further comprising an attachment device configured to seal the exposed perimeter of the manifold and the fluid control layer.
7 . The dressing of claim 1 , wherein the fluid control layer comprises a hydrophobic film and a plurality of fluid restrictions in the hydrophobic film.
8 . The dressing of claim 7 , wherein the hydrophobic film has a contact angle with water greater than 90 degrees.
9 . The dressing of claim 7 , wherein the hydrophobic film is a polyethylene film.
10 . The dressing of claim 7 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a length less than 4 millimeters.
11 . The dressing of claim 7 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a width less than 2 millimeters.
12 . The dressing of claim 7 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a length less than 4 millimeters and a width less than 2 millimeters.
13 . (canceled)
14 . (canceled)
15 . (canceled)
16 . (canceled)
17 . (canceled)
18 . (canceled)
19 . (canceled)
20 . The dressing of claim 1 , wherein the fluid control layer includes a hydrophobic film laminated to a hydrophilic film.
21 . (canceled)
22 . The dressing of claim 7 , wherein the fluid restrictions comprise elastomeric valves in the hydrophobic film, and the elastomeric valves are normally closed.
23 . The dressing of claim 22 , wherein the elastomeric valves are fenestrations.
24 . The dressing of claim 22 , wherein the elastomeric valves are slits.
25 . The dressing of claim 22 , wherein the fluid restrictions comprise a plurality of slits in the hydrophobic film, each of the slits having a length less than 4 millimeters.
26 . The dressing of claim 25 , wherein the length is less than 3 millimeters.
27 . The dressing of claim 25 , wherein the length is at least 2 millimeters.
28 . The dressing of claim 7 , wherein the fluid restrictions are coextensive with the hydrophobic film.
29 . The dressing of claim 7 , wherein the fluid restrictions are coextensive with the manifold.
30 . (canceled)
31 . The dressing of claim 1 , wherein the manifold comprises foam.
32 . (canceled)
33 . (canceled)
34 . (canceled)
35 . (canceled)
36 . (canceled)
37 . The dressing of claim 1 , wherein the manifold comprises reticulated polyurethane ether foam.
38 . The dressing of claim 1 , wherein the manifold comprises reticulated foam having a free volume of at least 90%.
39 . The dressing of claim 1 , wherein the manifold comprises porous foam having an average pore size in a range of 400-600 microns.
40 . The dressing of claim 1 , wherein the manifold has a thickness less than 7 millimeters.
41 . The dressing of claim 1 , wherein the manifold has a thickness in a range of 2 millimeters to 7 millimeters.
42 . The dressing of claim 1 , wherein the manifold is hydrophobic.
43 . (canceled)
44 . The dressing of claim 7 , further comprising:
a layer of hydrophobic gel adhered to the hydrophobic film; and
a plurality of apertures in the layer of hydrophobic gel.
45 . The dressing of claim 7 , further comprising:
a layer of hydrophobic gel adhered to the hydrophobic film; and
a plurality of apertures in the layer of hydrophobic gel;
wherein substantially all of the plurality of apertures are aligned with at least one of the fluid restrictions.
46 . (canceled)
47 . The dressing claim 44 , wherein the hydrophobic gel is a silicone gel.
48 . (canceled)
49 . (canceled)
50 . A dressing for use with negative-pressure treatment, the dressing comprising:
a cover comprising a non-porous film;
a manifold adhered to the non-porous film;
a hydrophobic film adhered to the manifold;
a plurality of fluid restrictions in the hydrophobic film adjacent to the manifold;
a silicone layer adjacent the hydrophobic film; and
a plurality of apertures in the silicone layer,
wherein the cover, the manifold, the hydrophobic film, and the silicone layer each have an exposed perimeter.
51 . The dressing of claim 50 , further comprising a fluid port coupled to the cover and fluidly coupled to the manifold through the cover.
52 . The dressing of claim 50 , further comprising an attachment device configured to seal the exposed perimeter of the cover, the manifold, the hydrophobic film, and the silicone layer.
53 . The dressing of claim 50 , wherein the plurality of apertures are at least partially aligned with the fluid restrictions.
54 . The dressing of claim 50 , wherein the hydrophobic film has a contact angle with water greater than 90 degrees.
55 . (canceled)
56 . The dressing of claim 50 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a length less than 4 millimeters.
57 . The dressing of claim 50 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a width less than 2 millimeters.
58 . The dressing of claim 50 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a length less than 4 millimeters and a width less than 2 millimeters.
59 . The dressing of claim 50 , wherein the fluid restrictions comprise elastomeric valves in the hydrophobic film, and the elastomeric valves are normally closed.
60 . The dressing of claim 59 , wherein the elastomeric valves are fenestrations.
61 . The dressing of claim 59 , wherein the elastomeric valves are slits.
62 . (canceled)
63 . (canceled)
64 . (canceled)
65 . The dressing of claim 50 , wherein the manifold comprises foam.
66 . (canceled)
67 . (canceled)
68 . (canceled)
69 . (canceled)
70 . (canceled)
71 . The dressing of claim 50 , wherein the manifold comprises reticulated polyurethane ether foam.
72 . (canceled)
73 . (canceled)
74 . (canceled)
75 . (canceled)
76 . A dressing kit for use with negative-pressure treatment, the dressing kit comprising:
a cover;
a manifold adhered to the cover;
a tissue interface comprising a hydrophobic film adhered to the manifold;
a plurality of fluid restrictions in the hydrophobic film adjacent to the manifold;
a fluid port coupled to the cover and fluidly coupled to the manifold through the cover;
wherein the manifold and the tissue interface each have an exposed edge; and
a plurality of attachment devices configured to seal the exposed edge of the manifold and the tissue interface.
77 . The dressing kit of claim 76 , wherein the hydrophobic film has a contact angle with water greater than 90 degrees.
78 . (canceled)
79 . (canceled)
80 . (canceled)
81 . The dressing kit of claim 76 , wherein the manifold comprises foam.
82 . (canceled)
83 . (canceled)
84 . (canceled)
85 . (canceled)
86 . (canceled)
87 . The dressing kit of claim 76 , wherein the manifold comprises reticulated polyurethane ether foam.
88 . A method for treating a tissue site with negative pressure, the method comprising:
providing a dressing, the dressing comprising:
a cover comprising a non-porous film,
a manifold adhered to the non-porous film,
a tissue interface comprising a hydrophobic film adhered to the manifold,
a plurality of fluid restrictions in the hydrophobic film adjacent to the manifold,
a fluid port coupled to the cover and fluidly coupled to the manifold through the cover,
wherein the manifold and the tissue interface each have an exposed edge;
sizing the dressing to the tissue site;
applying the tissue interface to the tissue site;
overlapping one or more attachment devices to the cover and an attachment surface adjacent to the tissue site so that the exposed edge of the manifold and the tissue interface are sealed;
fluidly coupling the fluid port to a negative-pressure source; and
applying negative pressure from the negative-pressure source to the tissue site through the dressing.
89 . (canceled)