Wound therapy apparatus with scar modulation properties and related methods
A wound therapy apparatus is disclosed herein. In various aspects, the wound therapy apparatus may include a distal layer to contact a wound bed, the distal layer comprised of silicone, and fenestrations disposed about the distal layer pass between a distal side of the distal layer and a proximal side of the distal layer to communicate between the distal side and the proximal side. A pad may cooperate with the proximal side of the distal layer to receive exudate communicated through the distal layer from the wound bed via the fenestrations, in various aspects. Various materials including medicament(s) may be communicated to the wound bed through the distal layer via the fenestrations, in various aspects. A structural member may be included in various aspects to secure the distal layer and pad to a skin surface, in various aspects. Methods of use of the wound therapy apparatus are disclosed herein. This Abstract is presented to meet requirements of 37 C.F.R. § 1.72(b) only, and is not intended to identify key elements of the apparatus, methods, and compositions of matter disclosed herein or to delineate the scope thereof.
1. A wound therapy apparatus, comprising:
a pad; and
a distal layer formed as a coating of a silicone material only on a distal surface of the pad that is non-occlusive in part to communicate exudate from a wound bed through non-occluded portions of the distal surface of the pad into the pad, the non-occluded portions defining fenestrations that pass only through the silicone material between a distal side of the distal layer and a proximal side of the distal layer.
2. The apparatus of claim 1 , further comprising:
a structural member engaged with the pad, the structural member adhesively securable to a skin surface about the wound bed to hold a distal side of the distal layer in contact with the wound bed.
3. The apparatus of claim 1 , wherein the silicone material comprises a combination of one or more polysiloxanes and a carrier.
4. The apparatus of claim 2 , wherein at least a portion of the structural member is formed of a material selected from a group consisting of a transparent material and a translucent material.
5. The apparatus of claim 2 , further comprising:
a film disposed between the structural member and the distal layer configured to deflect at least a portion of a shear force applied externally to the structural member.
6. The apparatus of claim 2 , wherein the structural member is configured to form an occlusive space over the wound bed upon adhesive securement to the skin surface about the wound bed.
7. The apparatus of claim 2 , wherein the structural member is configured to allow passage therethrough of a material selected from a group consisting of O 2 , CO 2 , and water vapor.
8. The apparatus of claim 2 , further comprising:
an adhesive disposed on the structural member.
9. The apparatus of claim 1 , further comprising:
a medicament disposed within the pad.
10. The apparatus of claim 1 , wherein the pad comprises a combination of a hydrophobic material and a hydrophilic material.
11. The apparatus of claim 10 , wherein the pad distal surface is comprised of more of the hydrophobic material than of the hydrophilic material and a pad proximal surface of the pad is comprised of more of the hydrophilic material than of the hydrophobic material.
12. The apparatus of claim 1 , wherein the fenestrations have a diameter within a range of 50 microns to 1000 microns.
13. The apparatus of claim 1 , wherein a concentration of the fenestrations is within a range of from 45 fenestration per square centimeter to 2500 fenestrations per square centimeter.
14. The apparatus of claim 13 , wherein the concentration of the fenestrations varies in differing portions of the distal layer.
15. The apparatus of claim 1 , wherein the distal layer has a thickness within a range of 200 microns to 1000 microns.
16. The apparatus of claim 1 , wherein the silicone material comprises a polysiloxane.
17. The apparatus of claim 1 , wherein the silicone material comprises a polysiloxane dispersed in a solvent.
18. The apparatus of claim 1 , wherein the silicone material comprises a silicone polymer having a molecular weight in a range between 10 5 and 10 7 .
19. The apparatus of claim 1 , wherein a combination of the distal layer disposed upon the pad is die cut.
20. The apparatus of claim 1 , wherein the distal layer is formed by spraying the silicone material onto the distal surface of the pad.