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Hydrogel wound dressing and preparation method thereof

A wound dressing and hydrogel technology, applied in the field of medical dressings and their preparation, can solve the problems of the influence of the gas permeability of the dressing, unfavorable wound breathing, and discomfort for patients, and achieves reduced coating area, shortened preparation time, and excellent comfort. sexual effect

Active Publication Date: 2022-01-14
苏州汇涵医用科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the interpretation of the patent, it can be seen that the base layer is a PU layer coated with medical pressure-sensitive adhesive, and another layer of PU is used as a supporting layer, so two layers of PU layer plus a layer of medical pressure-sensitive adhesive layer will inevitably affect the The air permeability of the whole dressing is affected, which is not conducive to the breathing of the wound. In addition to having a certain negative effect on wound healing, it will also make the patient feel uncomfortable.

Method used

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  • Hydrogel wound dressing and preparation method thereof
  • Hydrogel wound dressing and preparation method thereof
  • Hydrogel wound dressing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] prepared by figure 1 The illustrated hydrogel wound dressing comprises the following steps:

[0024] A) Prepare the core layer 3, first fill the first raw material as the floating-point adhesive layer 32 and the second raw material as the floating-point liquid-absorbing layer 33 into the image 3 In the two containers of the spraying machine of the shown matrix shower head 4, then by the matrix shower head 4, the aforementioned first raw material and the second raw material are sprayed onto one side surface of the backing layer 31 in a point-like spraying mode, and then the power is preferably 50-1000W, preferably 200-600W, preferably 400W (this embodiment selects 400W) UV lamp irradiation molding, specifically by the backing layer 31 carrying the floating point adhesive layer 32 and the floating point shape The liquid-absorbing layer 33 is preferably 10-30m / min, preferably 12-18m / min, preferably 15m / min (the present embodiment is 15m / min) speed away from the ultraviol...

Embodiment 2

[0027] prepared by figure 1 The illustrated hydrogel wound dressing comprises the following steps:

[0028] A) Prepare the core layer 3, first fill the first raw material as the floating-point adhesive layer 32 and the second raw material as the floating-point liquid-absorbing layer 33 into the image 3 In the two containers of the spraying machine of shown matrix shower head 4, then by matrix shower head 4, aforesaid first raw material and second raw material are sprayed onto one side surface of backing layer 31 with dotted spraying mode, then on backing layer 31, together with the floating-point adhesive layer 32 and the floating-point liquid-absorbing layer 33, pass through the drying tunnel at a temperature of 70°C at a speed of 20m / min, so as to be combined with the backing layer 31 together with the molding The floating-point adhesive layer 32 and the floating-point liquid-absorbing layer 33 on one side surface of 31 are composed of figure 1 and figure 2For the core ...

Embodiment 3

[0031] prepared by figure 1 The illustrated hydrogel wound dressing comprises the following steps:

[0032] A) Prepare the core layer 3, first fill the first raw material as the floating-point adhesive layer 32 and the second raw material as the floating-point liquid-absorbing layer 33 into the image 3 In the two containers of the spraying machine of shown matrix shower head 4, then by matrix shower head 4, aforesaid first raw material and second raw material are sprayed onto one side surface of backing layer 31 with dotted spraying mode, then on backing layer 31, together with the floating-point adhesive layer 32 and the floating-point liquid-absorbing layer 33, pass through the drying tunnel at a temperature of 30°C at a speed of 30m / min, thereby being bonded to the backing layer by the backing layer 31 together with molding The floating-point adhesive layer 32 and the floating-point liquid-absorbing layer 33 on one side surface of 31 are composed of figure 1 and figure...

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Abstract

A hydrogel wound dressing The hydrogel wound dressing and a preparation method thereof belong to the technical field of medical dressings and preparation thereof. Steps: first fill the first raw material as the floating-point adhesive layer and the second raw material as the floating-point liquid-absorbing layer into the two containers of the spraying machine with matrix nozzles, and then use the matrix nozzles to spray the first, The second raw material is sprayed onto one side surface of the backing layer by dot spraying, and then irradiated by an ultraviolet lamp or heated by a heating device to form a floating-point adhesive bonded to one side surface of the backing layer by the backing layer together with molding. The attached layer and the floating-point liquid-absorbing layer constitute the core layer; the first and second release layers are combined with the core layer in a synchronous unwinding state, the first release layer is bonded to the backing layer, and the second release layer is The molded layer is attached to the floating-point adhesive layer and the floating-point liquid-absorbing layer, and then cut to obtain a hydrogel wound dressing. Significantly improved air permeability; good adhesion, excellent comfort; pain relief; significantly shortened preparation time and improved preparation efficiency.

Description

technical field [0001] The invention belongs to the technical field of medical dressing and its preparation, in particular relates to a hydrogel wound dressing, and also relates to a preparation method thereof. Background technique [0002] Since accidental wounds of skin tissue such as abrasions and scratches are unavoidable in daily life, various dressings are required for wound treatment. As is known in the industry, different types of wounds require different dressings. Therefore, the correct choice of wound dressings is of positive significance for promoting wound healing and getting rid of pain and troubles as soon as possible. Whether the hemostatic effect is good or not, the quality of air permeability, comfort and compliance, and the excellent absorption of exudate, and whether there will be pain during the removal process are important factors to consider for wound dressings. Among them, air permeability Whether the sex is good or not plays a very important role i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/02
CPCA61F13/0289A61F13/0246A61F13/0213A61F2013/00676A61F2013/00659
Inventor 古元安蔡忠新冯永良
Owner 苏州汇涵医用科技发展有限公司
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