Medical dressing with cooling function and wound healing prompting function and preparation method of medical dressing
A wound healing and wound dressing technology, which is applied in the field of medical dressings with the functions of cooling and promoting wound healing and the preparation thereof, and achieves the effects of facilitating absorption and retention, controlling wound microcirculation, and preventing the invasion of external bacteria.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Dissolve 8g of polyacrylic acid in deionized water to prepare a polyacrylic acid hydrogel with a mass concentration of 8%; the polyacrylic acid hydrogel is coated with a grammage of 10g / m 2 On the polylactic acid spunlace nonwoven support layer, the hydrogel has a grammage of 80 g / m 2 ; The polylactic acid nanofiber layer loaded with 20% (wt.) norfloxacin prepared by electrospinning is covered on the surface of polyacrylic acid hydrogel, and fixed with polylactic acid perforated non-woven fabric to obtain a cooling and cooling effect. Medical dressings that promote wound healing. The weight of the perforated non-woven layer is 10 g / m 2 , with circular holes with an average pore diameter of 0.8mm; the fiber diameter of the nanofiber layer is 50~200nm, and the gram weight is 0.2~0.4g / m 2 .
[0030] Such as figure 1 As shown, the wound dressing of the present invention includes a perforated non-woven fabric layer 1, a nanofiber layer 2, a hydrogel layer 3 and a support...
Embodiment 2
[0033] Dissolve 6g of sodium alginate in deionized water to prepare an aqueous solution of sodium alginate with a mass concentration of 6%, add 5% (wt.) calcium chloride solution and stir rapidly to form calcium sodium alginate gel; Gel drawdown at a grammage of 60 g / m 2 The surface of the thermoplastic elastomer Vistamaxx spunbonded non-woven support layer is obtained to obtain a double-layer composite of the hydrogel layer and the support layer; The surface of the sugar gel layer; fixed with a polypropylene perforated non-woven fabric to obtain a medical dressing with the effects of cooling down and promoting wound healing. The nanofiber layer has a grammage of 1.0 g / m 2, , the fiber diameter is 200~700nm; the perforated non-woven fabric layer has cross-shaped holes with a diameter of 0.5mm, and the weight is 15 g / m 2, ;The weight of the support layer is 30 g / m 2 .
[0034] The wound dressing keeps the wound temperature at 14-25°C.
Embodiment 3
[0036]Prepare a chitosan solution with a mass concentration of 10%, add 25% (wt.) glutaraldehyde solution to the solution at a mass fraction of 1.2%, stir and disperse quickly to partially cross-link chitosan to obtain a chitosan gel; Chitosan gel is coated on the surface of the support layer made of polypropylene terephthalate fabric by spin coating to obtain a double-layer composite of the hydrogel layer and the support layer. The support layer has a gram weight of 60 g / m 2 ; With 10% gelatin aqueous solution as raw material, the gelatin nanofiber layer loaded with norfloxacin was prepared by microphase separation method, and it was transferred to the surface of the chitosan gel layer of the double-layer composite; with polylactic acid A perforated nonwoven layer anchors the bilayer composite and the nanofiber layer, resulting in a medical dressing with cooling and wound-healing properties. The polylactic acid perforated non-woven fabric has a grammage of 30 g / m 2 , the hol...
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
Basis weight | aaaaa | aaaaa |
Basis weight | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com