Medical hydrogel dressing and preparation method thereof

A technology of hydrogel and hydrogel layer, applied in the fields of application, medical science, clothing, etc., can solve the problems of fast liquid absorption, limited water absorption performance, increased production cost, etc., to achieve convenient use, promote wound healing, Easy-to-use effects

Inactive Publication Date: 2012-07-25
烟台万利医用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis method of the composite hydrogel wound dressing mentioned in the patent is currently the most widely used method for making hydrogel dressings. The hydrogel dressing prepared by this method has good biological safety, but the method prepared The hydrogel needs to be re-sterilized in other appropriate ways after covering the gas-permea

Method used

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  • Medical hydrogel dressing and preparation method thereof
  • Medical hydrogel dressing and preparation method thereof

Examples

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Embodiment 2

[0025] [Example 2] The specification is 200 g / m 2 The non-woven fabric 2 is treated with a certain concentration of Ag+ or nano-silver solution, that is, the non-woven fabric 2 is immersed in the cross-linking agent solution, and the cross-linking agent is fixed so that 0.5mol of Ag+ or nano-silver is attached to each square meter of the non-woven fabric. Ions, dry for later use. Prepare a 5% aqueous solution of sodium alginate and carboxymethyl cellulose, apply it on the treated non-woven fabric 2, and let it stand for 5-10 minutes. combined into a whole. Transfer this whole to medical tape 3 with pressure sensitive adhesive, 2 layers of non-woven fabric not bound to hydrogel 1 are bonded together with pressure sensitive adhesive, and release paper or film 4 is covered on hydrogel 1 And on the outer surface of the medical tape 3 with pressure-sensitive adhesive, it is packed in a packaging bag full of nitrogen, and then sterilized with gamma-rays.

[0026] Since silver ion...

Embodiment 3

[0027] [Example 3] The specification is 120 g / m 2 The non-woven fabric 2 uses a certain concentration of Fe 2+ or Fe 3+ Solution treatment, that is, immersing the non-woven fabric 2 in the cross-linking agent solution, fixing the cross-linking agent, so that 0.2mol of Fe is attached to the non-woven fabric 2 per square meter 2+ or Fe 3+ Ions, dry for later use. Prepare a 6% aqueous solution of sodium alginate and carboxymethyl chitosan, apply it on the treated non-woven fabric 2, and let it stand for 5-10 minutes. Layers are combined into a whole. Transfer this whole to the medical tape with pressure sensitive adhesive 3, the non-woven fabric layer without hydrogel is bonded with the pressure sensitive adhesive, the release paper or film 4 is covered on the hydrogel and the pressure sensitive adhesive The outer surface of the sensitive adhesive medical tape 3 is sealed in a packaging bag by vacuum or nitrogen filling, and then sterilized by high pressure steam.

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Abstract

The invention relates to a wound healing hydrogel dressing applicable to nursing various acute and chronic wounds and a preparation method. The hydrogel dressing comprises a hydrogel layer, a fixing non-woven fabric and a medical adhesive tape, the hydrogel layer is fixed on a surface of the non-woven fabric, and the other surface of the non-woven fabric is adhered on the medical adhesive tape. The preparation method includes fixing cross-linking agent on the non-woven fabric; coating solution of a raw material of hydrogel onto one surface of the non-woven fabric, adhering the other surface of the non-woven fabric onto the medial adhesive tape with pressure-sensitive adhesive after crosslinking is finished, arranging the pressure-sensitive adhesive onto one surface of the medical adhesive tape while arranging a separate film backing on the other surface of the medical adhesive tape, and attaching an isolating film on one surface of the hydrogel; and sterilizing after the medical hydrogel dressing is packaged. The medical hydrogel dressing is convenient in use, can rapidly absorb exudation of the wound, prevents the exudation of the wound from excessively steeping the wound, creates a moist wound healing condition, and promotes wound healing. A self-adhesion function of the wound healing hydrogel dressing is greatly convenient for clinic service.

Description

technical field [0001] The invention relates to a wound repairing hydrogel dressing suitable for various acute and chronic wound care. The dressing has unique liquid absorption and self-adhesive functions, is convenient to use and can absorb wound exudate to prevent excessive wound exudate Impregnation of the wound surface can create slightly moist wound healing conditions and promote wound healing. Its self-adhesive function greatly facilitates clinical use. Background technique [0002] Wound repair has always been an important issue facing human beings. In order to speed up wound repair, people have always hoped to find out some method or drug to promote or accelerate this process. In the early days, people used dry therapy on wounds, especially large burn wounds, mainly from the perspective of preventing infection. Later, people found that if the wounds were kept in a certain moist environment, the wounds would heal better. Under the guidance of the theory of "moist wou...

Claims

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Application Information

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IPC IPC(8): A61F13/15A61L15/28A61L15/42
Inventor 姜红杨毅郭刚孟祥锋吴小婷许文明贾小宁李利明王福永杨经纬姜财金
Owner 烟台万利医用品有限公司
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