Transparent peel and place dressing for negative-pressure therapy
View Patent ↗A dressing for treating a tissue site with negative pressure may comprise a first polymer film having a plurality of fluid restrictions, and a second polymer film comprising a plurality of standoffs disposed adjacent to the first polymer film. The first polymer film and the second polymer film may be substantially transparent to allow observation of the tissue site. In some embodiments, at least some of the standoffs may be offset from the fluid restrictions. The second polymer film may comprise fluid passages adjacent to the standoffs in some examples.
1. A dressing for treating a tissue site with negative pressure, the dressing comprising:
a cover comprising a first aperture;
a first polymer film comprising a plurality of standoffs and a single second aperture axially aligned with the first aperture in the cover; and
a second polymer film disposed adjacent to the standoffs in the first polymer film, the second polymer film including a plurality of fluid restrictions, wherein the plurality of standoffs form a plurality of spaces between the first polymer film and the second polymer film, and wherein the single second aperture is configured to provide the only fluid passage through the first polymer film to the plurality of spaces.
2. The dressing of claim 1 , wherein the first polymer film and the second polymer film allow visualization of the tissue site.
3. The dressing of claim 1 , wherein at least some of the standoffs are offset from the fluid restrictions.
4. The dressing of claim 1 , wherein the second polymer film has a thickness in a range of about 50 microns to about 100 microns.
5. The dressing of claim 1 , wherein the fluid restrictions are fenestrations in the second polymer film, wherein the fenestrations each have a length of about 2 millimeters to about 5 millimeters.
6. The dressing of claim 1 , wherein the second polymer film has a thickness in a range of about 200 microns to about 300 microns.
7. The dressing of claim 1 , wherein the first polymer film has a thickness of about 500 microns.
8. The dressing of claim 1 , wherein each of the standoffs has a height in a range of about 1 millimeter to about 4 millimeters, wherein each of the standoffs has a width in a range of about 1 millimeter to about 4 millimeters, and wherein each of the standoffs have a pitch of about 3.5 millimeters to about 4 millimeters.
9. The dressing of claim 1 , wherein the cover is disposed over the first polymer film.
10. The dressing of claim 1 , further comprising a spacer disposed between the first aperture in the cover and the single second aperture in the first polymer film, the spacer axially aligned with the first aperture and the single second aperture.
11. The dressing of claim 1 , further comprising a screen removably attached to the cover with a re-sealable adhesive, wherein the screen is opaque.
12. The dressing of claim 1 , further comprising a layer of gel disposed adjacent to the second polymer film opposite the first polymer film, the layer of gel having perforations fluidly coupled with at least some of the fluid restrictions.
13. The dressing of claim 1 , wherein the standoffs comprise blisters, bubbles, cells, bosses, or a combination thereof.
14. The dressing of claim 1 , further comprising:
a third layer comprising a treatment aperture;
wherein the cover, the first polymer film, the second polymer film, and the third layer are assembled in a stacked relationship with the first polymer film and the second polymer film between the cover and the third layer, and wherein at least some of the fluid restrictions are exposed through the treatment aperture.
15. The dressing of claim 14 , wherein the treatment aperture forms a frame around at least some of the fluid restrictions.
16. The dressing of claim 14 , wherein the cover, the first polymer film, the second polymer film, and the third layer are substantially transparent.
17. The dressing of claim 14 , wherein the cover and the third layer enclose the first polymer film and the second polymer film.
18. An apparatus for treating a tissue site with negative pressure, the apparatus comprising:
a dressing according to claim 1 ; and
a negative-pressure source fluidly coupled to the dressing.
19. A method of treating a tissue site with negative pressure, the method comprising:
applying the dressing of claim 1 to the tissue site;
applying negative pressure to the tissue site through the dressing; and
observing the tissue site through the dressing.
20. A method of treating a tissue site with negative pressure, the method comprising:
applying the dressing of claim 1 to the tissue site, the dressing comprising a screen configured to obscure the tissue site;
applying negative pressure to the tissue site through the dressing;
removing the screen;
observing the tissue site through the dressing; and
replacing the screen to obscure the tissue site.