Negative pressure wound therapy article with features
An article, including a network of interconnected polymeric strands; wherein each of the interconnected polymeric strands has a first surface adapted to contact a tissue site and a second surface opposite the first surface; wherein at least one of the interconnected polymeric stand has a plurality of features extending from the first surface of the interconnected polymeric strands; wherein at least one of the interconnected polymeric strands is non-linear; a plurality of openings between adjacent interconnected polymeric strands; an adhesive layer in contact with the second surface of the interconnected polymeric strands; and a filler in contact with the adhesive layer, the adhesive layer in between the network of interconnected polymeric strands and the filler; wherein the article is a negative pressure wound therapy article.
1. An article, comprising:
a network of interconnected polymeric strands; wherein each of the interconnected polymeric strands has a first surface adapted to contact a tissue site and a second surface opposite the first surface; wherein at least one of the interconnected polymeric strand has a plurality of features extending from the first surface of the interconnected polymeric strands; wherein at least one of the interconnected polymeric strands is non-linear;
a plurality of openings between adjacent interconnected polymeric strands;
an adhesive layer in contact with the second surface of the interconnected polymeric strands; and
a filler in contact with the adhesive layer, the adhesive layer in between the network of interconnected polymeric strands and the filler;
wherein the article is a negative pressure wound therapy article.
2. The article of claim 1 , wherein at least one of the interconnected polymeric strands is linear.
3. The article of claim 1 , wherein the network comprises alternating non-linear polymeric strands and linear polymeric strands.
4. The article of claim 1 , wherein the non-linear polymeric strand has a sinusoidal curve.
5. The article of claim 1 , wherein the filler comprises a polyurethane foam.
6. The article of claim 1 , wherein the tensile strength of the article parallel to x direction is more than 2.23 Mpa.
7. The article of claim 1 , wherein the polymeric strands comprises an elastomeric polymer.
8. The article of claim 7 , wherein the elastomeric polymer is selected from polyolefins or polyurethanes.
9. The article of claim 1 , wherein the features have a height of 100 μm to 1000 μm.
10. The article of claim 1 , wherein the features have a width of 10 μm to 1000 μm.
11. The article of claim 1 , wherein a ratio of the height to width of the features is no more than 1:1.
12. The article of claim 1 , wherein the density of features extending from the first surface is less than 1,000/square inch.
13. The article of claim 1 , wherein aspect ratio of the openings is greater than 1:1.
14. The article of claim 1 , wherein essentially all the interconnected polymeric strands are non-linear.
15. A system, comprising:
the article of claim 1 ; and
a reduced pressure source connected to article to deliver the reduced pressure through the opening, between the features, and to the tissue site.
16. A method, comprising:
providing the article of claim 1 ; and
positioning the article on a wound.
17. The method of claim 16 , further comprising coupling a reduced pressure source to the article.
18. The method of claim 16 , further comprising applying a reduced pressure to the wound through the article.
19. The method of claim 18 , wherein applying the reduced pressure to the wound comprises activating the reduced pressure source coupled to the article.
20. The method of claim 16 , wherein positioning the article on the wound comprises placing the article over the wound with the features on the first surface facing the wound.