ELECTRO SPUN NANOFIBROUS WOUND DRESSING AND A METHOD OF SYNTHESIZING THE SAME
First Claim
1. An electro spun nanofibrous wound dressing comprises:
- a first nanofibrous layer, and wherein the first nanofibrous layer is a polymeric layer, and wherein the first nanofibrous layer is an outer supporting layer, and wherein the first nanofibrous layer is hydrophobic in nature;
a second nanofibrous layer, and wherein the second nanofibrous layer is a polymeric layer, and wherein the second nanofibrous layer is a genipin cross linked middle reservoir layer loaded with a herbal extract, and wherein the second nanofibrous layer is hydrophobic or hydrophilic in nature, and wherein the herbal extract is a Melilotus officinalis extract and wherein the cross-linking of the second nanofibrous layer controls a release of the Melilotus officinalis extract in an aqueous environment;
a third nanofibrous layer, and wherein the third nanofibrous layer is a polymeric layer, and wherein the third nanofibrous layer is a wound contacting inner layer, and wherein the third nanofibrous layer is a non-cross-linked chitosan based nanofibrous layer, and wherein the third nanofibrous layer is hydrophilic in nature; and
additives, wherein the additives are selected from a group consisting of surfactants, block-co-polymers, salts and rubbers, and wherein the additives enhances a mechanical property and a chemical property of the wound dressing and wherein the additives controls a release profile of the herbal extract.
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Abstract
The various embodiments herein provide an electro spun wound dressing comprising three nano fibrous layers and a method of synthesizing the same. The outer polymeric layer acts as a support layer for the other two layers and is hydrophilic in nature. The middle layer comprises a genipin cross linked reservoir layer loaded with a herbal extract of Melilotus officinalis and is hydrophobic or hydrophilic in nature. The second layer is cross-linked to control a release of the Melilotus officinalis extract in an aqueous environment. The third layer is a wound contacting inner layer comprising a non-cross-linked chitosan based nanofibrous layer that is hydrophilic in nature. Various additives are provided to enhance the mechanical or the chemical properties of the wound dressing and to control a release profile of the herbal extract.
27 Citations
20 Claims
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1. An electro spun nanofibrous wound dressing comprises:
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a first nanofibrous layer, and wherein the first nanofibrous layer is a polymeric layer, and wherein the first nanofibrous layer is an outer supporting layer, and wherein the first nanofibrous layer is hydrophobic in nature; a second nanofibrous layer, and wherein the second nanofibrous layer is a polymeric layer, and wherein the second nanofibrous layer is a genipin cross linked middle reservoir layer loaded with a herbal extract, and wherein the second nanofibrous layer is hydrophobic or hydrophilic in nature, and wherein the herbal extract is a Melilotus officinalis extract and wherein the cross-linking of the second nanofibrous layer controls a release of the Melilotus officinalis extract in an aqueous environment; a third nanofibrous layer, and wherein the third nanofibrous layer is a polymeric layer, and wherein the third nanofibrous layer is a wound contacting inner layer, and wherein the third nanofibrous layer is a non-cross-linked chitosan based nanofibrous layer, and wherein the third nanofibrous layer is hydrophilic in nature; and additives, wherein the additives are selected from a group consisting of surfactants, block-co-polymers, salts and rubbers, and wherein the additives enhances a mechanical property and a chemical property of the wound dressing and wherein the additives controls a release profile of the herbal extract. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of synthesizing an electro spun nanofibrous wound dressing comprises steps of:
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forming a first nanofibrous layer, wherein the first nanofibrous layer is a polymeric layer, and wherein the first nanofibrous layer is in a form of a mat, and wherein the first nanofibrous layer acts as a support layer for a second nanofibrous layer and a third nanofibrous layer; forming a second nanofibrous layer on the formed first nanofibrous layer, wherein the second nanofibrous layer is a polymeric layer, wherein the second nanofibrous layer is a chitosan polymer based nanofibrous layer loaded with Melilotus officinalis extract; forming a third nanofibrous layer on the formed second nanofibrous layer, wherein the third nanofibrous layer is a polymeric layer, wherein the third nanofibrous layer is a chitosan polymer based layer without Melilotus officinalis extract; and exposing the formed first nanofibrous layer, the second nanofibrous layer and the third nanofibrous layer to a water vapour at 30°
C. for 24 h. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification