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Photocatalytic antibacterial healing-promoting dressing patch

A technology of photocatalysis and photocatalytic reaction, which is applied in dressings, adhesive dressings, non-adhesive dressings, etc., can solve the problems of negative biological effects, unclear adverse reactions, application restrictions, etc., and achieve both biological safety, stable bactericidal performance, The effect of good fixation performance

Inactive Publication Date: 2019-01-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the negative biological effects and adverse reactions caused by the migration of nano-sized silver particles into the human body are still unclear, the clinical application of this nano-silver-containing hydrocolloid dressing is greatly limited.

Method used

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  • Photocatalytic antibacterial healing-promoting dressing patch
  • Photocatalytic antibacterial healing-promoting dressing patch
  • Photocatalytic antibacterial healing-promoting dressing patch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A photocatalytic antibacterial and healing promoting dressing paste, the structure diagram is as figure 2 As shown, it includes a tape layer 4, an absorption layer 3, a dressing layer 2, and a protective film 1 arranged in sequence. The absorption layer 3 is a square with a side length of 5 cm, and its thickness is 10 μm. The material is silk cloth; the dressing layer 2 and the absorption layer 3 The shape and size are the same, and the thickness is 1mm; the tape layer 1 is a 5*15cm square, the thickness is 50μm, and the material is medical non-toxic acrylic; the shape and size of the protective film 1 and the tape 4 are the same, and the thickness is 15μm, and the material It is silicone paper. After the absorbent layer 3 and the dressing layer 2 are attached to the adhesive cloth layer 4, the structure diagram is as follows image 3 Shown. The material of the dressing layer 2 is photocatalytic reaction gel. The schematic diagram of the photocatalytic reaction gel is a...

Embodiment 2

[0047] A photocatalytic antibacterial and healing-promoting dressing, comprising a tape layer, an absorbing layer, a dressing layer and a protective film arranged in sequence. The absorbing layer is a square with a side length of 5cm, the thickness is 30μm, and the material is silk cloth; the dressing layer and the absorbing layer The shape and size are the same, and the thickness is 1.5mm; the tape layer is a 15*15cm square, its thickness is 60μm, and the material is pure natural Malay glue; the shape and size of the protective film and the tape layer are the same, the thickness is 30μm, and the material is PE film. After the absorbent layer 3 and the dressing layer 2 are attached to the adhesive cloth layer 4, the structure diagram is as follows Figure 4 Shown. The material of the dressing layer is photocatalytic reaction gel. The photocatalytic reaction gel is mainly composed of a polymer hydrogel film with a water absorption of 92% and a photocatalytic reaction system. The...

Embodiment 3

[0050] A photocatalytic antibacterial and healing-promoting dressing, including a tape layer, an absorbing layer, a dressing layer and a protective film arranged in sequence, the absorbing layer is a 5*15cm rectangle, its thickness is 80μm, and the material is silk cloth; the dressing layer and the absorbing layer The shape and size are the same, and its thickness is 2mm; the tape layer is a 15*15cm square, its thickness is 100μm, and the material is medical non-toxic solvent glue; the shape and size of the protective film and the tape layer are the same, the thickness is 55μm, and the material is PP membrane. After the absorbent layer 3 and the dressing layer 2 are attached to the adhesive cloth layer 4, the structure diagram is as follows Figure 5 Shown. The material of the dressing layer is photocatalytic reaction gel. The photocatalytic reaction gel is mainly composed of a polymer hydrogel film with a water absorption rate of 90% and a photocatalytic reaction system. The ...

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Abstract

The invention relates to a photocatalytic antibacterial healing-promoting dressing patch, which comprises sequentially arranged layers of adhesive tape, An absorbent lay, a dressing layer and a protective film, the dressing layer is made of photocatalytic reaction gel, A photocatalytic reaction gel comprises a photocatalytic reaction site and a polar group, the surrounding region of the photocatalytic reaction site is a strong adsorption polar group region, The charge of the strong adsorption polar group region and the non-strong adsorption polar group region are both positive or negative, andthe potential of the strong adsorption polar group region is higher than that of the non-strong adsorption polar group region. The strong adsorption polar group region is composed of the strong adsorption polar group or the weak adsorption polar group aggregation. The photocatalytic antibacterial healing promoting dressing patch of the invention has excellent bactericidal effect on bacteria, especially superbacteria and other refractory bacteria, At the same time, it can also provide a wetting environment for the wound, absorb tissue exudate, avoid fluid accumulation, maintain the best woundrepair wetting environment, promote skin cell mitosis, play a role in promoting wound healing.

Description

Technical field [0001] The invention belongs to the field of preparation of antibacterial dressings, and relates to a photocatalytic antibacterial healing promoting dressing patch. Background technique [0002] Traditional wound dressings are divided into dry gauze and oil gauze. Although dry traditional dressings can supervise and cover general wounds, they cannot be used for infectious wounds. The ability to manage exudate is limited. Adhesive wounds can cause new epithelial tissues. After injury, patients are prone to pain after changing dressings. Oil gauze dressings contain petroleum jelly or triglycerides, which can avoid adhesion of the wound, but still cannot promote healing. At the same time, the liquid secreted by the wound cannot penetrate the tape layer, causing local skin soaking, which easily makes the wound and surrounding skin white In severe cases, the skin will rot, making the wound more difficult to heal. The pure hydrogel-type medical dressings containing ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/02
CPCA61F13/00063A61F13/02A61F13/0276A61F13/01046A61F13/01029
Inventor 孙宾纪晓寰朱美芳李鹏江晓泽纪俊玲
Owner DONGHUA UNIV
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