Back to results
US 11,684,588 B2Granted
Multilayer composite material
AssigneeFidia Farmaceutici S.P.A.
InventorsGiovanni Gennari, Monica Campisi, Anna Maria Zanellato
Life of this patent
Estimating the term…
Abstract
The present invention relates to a multilayer composite material for the treatment of wounds and lesions and to a dressing comprising said multilayer material.
Claims5
A dressing comprising:
- a) a three-dimensional matrix comprising at least a first layer and a second layer of a fabric consisting of a polyethylene terephthalate (PET) fiber, wherein said first layer and said second layer are superimposed and welded together in at least two distinct and separate points, so as to define a space S between the first layer and the second layer;
- and
- b) a composition consisting of hyaluronic acid and at least one excipient suitable for pharmaceutical use, wherein said composition b) is contained in at least a part of the space S between the first layer and the second layer;
- wherein said dressing has dimensions of about 9×9 cm and contains 4.1±0.5 g of composition b) prepared starting from hyaluronic acid having a weight average molecular weight ranging from 150 to 250 kDa, wherein the total content of hyaluronic acid (HA) in the dressing is equal to 2 mg;
- wherein said composition b) is present at least in part on the surfaces of the first layer and second layer that are external to the intermediate space S;
- and
- wherein the fabric of the first layer and of the second layer is a monofilament fabric.
4 more elements
A dressing comprising:
- a) a three-dimensional matrix comprising at least a first layer and a second layer of a fabric consisting of a polyethylene terephthalate (PET) fiber, wherein said first layer and said second layer are superimposed and welded together in at least two distinct and separate points, so as to define a space S between the first layer and the second layer;
- and
- b) a composition consisting of hyaluronic acid, silver sulfadiazine, and at least one excipient suitable for pharmaceutical use, wherein said composition b) is contained in at least a part of the space S between the first and the second layer;
- wherein said dressing has dimensions of about 9×9 cm and contains 4.1±0.5 g of composition b) prepared starting from hyaluronic acid having a weight average molecular weight ranging from 150 to 250 kDa, wherein the total content of hyaluronic acid (HA) in the dressing is equal to 2 mg and the total content of silver sulfadiazine in the dressing is equal to 40 mg;
- wherein said composition b) is present at least in part on the surfaces of the first layer and second layer that are external to the intermediate space S;
- and
- wherein the fabric of the first layer and of the second layer is a monofilament fabric.
4 more elements
Dependencies are inferred from the claim text.