PEEL AND PLACE DRESSING FOR NEGATIVE-PRESSURE TREATMENT
A dressing for treating a tissue site with negative pressure may comprise a tissue interface comprising a three-dimensional textile of polyester fibers and a polymer coating on the polyester fibers. In some examples, the three-dimensional textile may be a three-dimensional weave of polyester fibers, and the polymer coating may be hydrophobic. In more particular embodiments, the polymer coating may be silicone or polyethylene, for example. The dressing may additionally include a drape disposed over the tissue interface and a port fluidly coupled to the tissue interface through the drape. The tissue interface may be applied over a tissue site, and therapeutic levels of negative pressure may be applied to the tissue site through the tissue interface.
1 . A dressing for treating a tissue site with negative pressure, the dressing comprising:
a tissue interface comprising a three-dimensional textile of polyester fibers; and
a polymer coating on the polyester fibers.
2 . The dressing of claim 1 , wherein the three-dimensional textile is a three-dimensional weave of polyester fibers.
3 . The dressing of claim 1 , wherein the polymer is hydrophobic.
4 . The dressing of claim 1 , wherein the three-dimensional textile has a weight of about 470 grams per square meter.
5 . The dressing of claim 1 , wherein the three-dimensional textile further comprises cotton fibers.
6 . The dressing of claim 4 , wherein the three-dimensional textile has a weight of about 650 grams per square meter.
7 . The dressing of claim 1 , wherein the three-dimensional textile has a weight of about 380 grams per square meter.
8 . The dressing of claim 7 , wherein the polyester fibers are elastic in at least two dimensions.
9 . The dressing of claim 7 , wherein the polymer coating is discontinuous.
10 . The dressing of claim 8 , wherein the polymer is silicone.
11 . The dressing of claim 8 , wherein the polymer is polyethylene.
12 . The dressing of claim 1 , further comprising a sealing layer adjacent to the tissue interface, the sealing layer having a plurality of apertures.
13 . The dressing of claim 1 , wherein the tissue interface further comprises:
a polymer film disposed adjacent to the three-dimensional textile; and
a plurality of fluid restrictions in the polymer film.
14 . The dressing of claim 12 , wherein the tissue interface further comprises:
a polymer film disposed adjacent to the sealing layer; and
a plurality of fluid restrictions in the polymer film fluidly coupled to the plurality of apertures.
15 . The dressing of claim 14 , wherein the polymer film is hydrophobic.
16 . The dressing of claim 14 , wherein the polymer film has a contact angle with water greater than 90 degrees.
17 . The dressing of claim 14 , wherein the polymer film is a polyethylene film having an area density of less than 30 grams per square meter.
18 . The dressing of claim 14 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a length less than 4 millimeters.
19 . The dressing of claim 14 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a width less than 2 millimeters.
20 . The dressing of claim 14 , 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.
21 . The dressing of claim 14 , wherein the fluid restrictions comprise or consist essentially of elastomeric valves in the polymer film that are normally closed.
22 . The dressing of claim 21 , wherein the elastomeric valves are fenestrations.
23 . The dressing of claim 21 , wherein the elastomeric valves are slits.
24 . The dressing of claim 21 , wherein the fluid restrictions comprise a plurality of slits in the polymer film, each of the slits having a length less than 4 millimeters.
25 . The dressing of claim 12 , wherein the sealing layer comprises a hydrophobic gel.
26 . The dressing of claim 25 , wherein the hydrophobic gel is a silicone gel.
27 . The dressing of claim 1 , further comprising:
a drape disposed over the tissue interface; and
a fluid port fluidly coupled to the tissue interface through the drape.
28 . A method of using the dressing of claim 1 , the method comprising:
applying the tissue interface over the tissue site; and
applying therapeutic levels of negative pressure to the tissue site through the tissue interface.
29 . (canceled)
30 . (canceled)
31 . An apparatus for treating a tissue site with negative pressure, the apparatus comprising:
a tissue interface comprising a three-dimensional textile of polyester fibers;
a polymer coating on the polyester fibers; and
a source of negative pressure configured to be coupled to the tissue interface.