Conformable medical dressing with self supporting substrate
View Patent ↗A medical dressing comprising a backing layer and a self-supporting substrate. The backing layers form a perimeter around the self supporting substrate and hold the self supporting substrate in place on a wound.
1. A method of assembling a medical article, comprising:
(a) providing a backing layer comprising:
a conformable backing having a first major surface and a second major surface, and an opening through the backing layer to form a window;
a first adhesive coated on at least a portion of the first major surface of the backing layer;
a carrier releasably attached to at least a portion of the second major surface of the backing layer;
a second adhesive coated on at least a portion of the second major surface of the backing layer proximate a perimeter of the window; and
a liner releasably adhered to the second adhesive;
(b) providing a self-supporting substrate comprising a first planar surface, and at least one side wall formed at an angle between zero to one hundred eighty degrees to the first planar surface, and a second planar surface connected to the at least one side wall in a form of flange; and
(c) attaching the self-supporting substrate to the second adhesive on the backing layer to enclose the window in the backing layer.
2. The method of claim 1 , wherein the carrier comprises at least one cut line.
3. The method of claim 2 , wherein the cut line traverses a length or width of the carrier.
4. The method of claim 3 , wherein the cut line is substantially continuous.
5. The method of claim 1 , wherein the backing layer is selected from the group consisting of polyurethane film, polyester film, polyether block amide film, and combinations thereof.
6. The method of claim 1 , wherein the carrier is selected from the group consisting of polyester film, paper, and combinations thereof.
7. The method of claim 1 , wherein the backing layer further comprises a second liner, that is releasably adhered to the first adhesive, opposite the backing layer.
8. The method of claim 1 wherein at least one of the first adhesive and the second adhesive includes at least one medicament comprising an anti-infective agent, an antimicrobial, polyhexamethylene biguanide, chlorhexidine, silver, iodine, iodophor, benzalkonium chloride, hydrogen peroxide, antibiotics, debridement agents, analgesics, healing factors, nitric oxide releasing materials, matrix metalloproteinase inhibitors, vitamins, growth factors, and nutrients.
9. The method of claim 1 wherein at least one of the first adhesive and the second adhesive is a pressure-sensitive adhesive.
10. The method of claim 1 wherein the liner that is releasably adhered to the second adhesive is removed from the second adhesive before the attaching of the self-supporting substrate to the second adhesive.
11. The method of claim 1 wherein the carrier is releasably attached to at least a portion of the second major surface of the backing layer with a heat seal bond.