CN219646050U - Wound repair dressing - Google Patents
Wound repair dressing Download PDFInfo
- Publication number
- CN219646050U CN219646050U CN202221107605.7U CN202221107605U CN219646050U CN 219646050 U CN219646050 U CN 219646050U CN 202221107605 U CN202221107605 U CN 202221107605U CN 219646050 U CN219646050 U CN 219646050U
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- CN
- China
- Prior art keywords
- layer
- silica gel
- gelatin sponge
- wound
- sponge layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000037314 wound repair Effects 0.000 title claims abstract description 19
- 239000000741 silica gel Substances 0.000 claims abstract description 56
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 56
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 55
- 108010010803 Gelatin Proteins 0.000 claims abstract description 39
- 239000008273 gelatin Substances 0.000 claims abstract description 39
- 229920000159 gelatin Polymers 0.000 claims abstract description 39
- 235000019322 gelatine Nutrition 0.000 claims abstract description 39
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 39
- 229920002635 polyurethane Polymers 0.000 claims abstract description 26
- 239000004814 polyurethane Substances 0.000 claims abstract description 26
- 229910012375 magnesium hydride Inorganic materials 0.000 claims abstract description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 151
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 14
- 239000002390 adhesive tape Substances 0.000 claims 1
- 206010052428 Wound Diseases 0.000 abstract description 23
- 208000027418 Wounds and injury Diseases 0.000 abstract description 23
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 9
- 239000001257 hydrogen Substances 0.000 abstract description 9
- 238000009423 ventilation Methods 0.000 abstract description 9
- 230000029663 wound healing Effects 0.000 abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 6
- 210000000416 exudates and transudate Anatomy 0.000 abstract description 6
- 230000001737 promoting effect Effects 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 4
- 239000012620 biological material Substances 0.000 abstract description 4
- 208000015181 infectious disease Diseases 0.000 abstract description 4
- 206010061218 Inflammation Diseases 0.000 abstract description 3
- 230000002439 hemostatic effect Effects 0.000 abstract description 3
- 150000002431 hydrogen Chemical class 0.000 abstract description 3
- 230000004054 inflammatory process Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 210000004207 dermis Anatomy 0.000 description 5
- 239000000515 collagen sponge Substances 0.000 description 4
- 206010063560 Excessive granulation tissue Diseases 0.000 description 3
- 210000001126 granulation tissue Anatomy 0.000 description 3
- 210000003491 skin Anatomy 0.000 description 3
- 208000035143 Bacterial infection Diseases 0.000 description 2
- 230000002924 anti-infective effect Effects 0.000 description 2
- 208000022362 bacterial infectious disease Diseases 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 108010025899 gelatin film Proteins 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Materials For Medical Uses (AREA)
Abstract
The utility model discloses a wound repair dressing, which comprises a polyurethane layer, a silica gel layer and a gelatin sponge layer which are sequentially fixed together from outside to inside, wherein the gelatin sponge layer is used for contacting a wound, the inside of the gelatin sponge layer is provided with a porous structure, the silica gel layer adopts an inner and outer double-layer structure, the outer edges of the inner and outer silica gel layers are closed, a cavity layer is arranged between the inner and outer silica gel layers, magnesium hydride powder is filled in the cavity layer, ventilation holes are distributed on the silica gel layer positioned on the inner layer, when wound exudates extend into the space between the inner and outer silica gel layers from the ventilation holes, moisture in the exudates reacts with magnesium hydride to generate hydrogen, the hydrogen overflows to the wound from the porous structure of the ventilation holes and the gelatin sponge layer, and the hydrogen has the functions of resisting oxidation and inflammation and promoting wound healing. The gelatin sponge layer is used as a wound surface contact layer, is a non-biological material, can not be dissolved by bacteria, and avoids infection; the porous structure of the gelatin sponge layer can absorb more liquid, so that the hemostatic speed is high, and the wound healing promoting capability is stronger.
Description
Technical Field
The utility model relates to a wound repair dressing, in particular to an artificial dermis dressing, and belongs to the technical field of medical appliances.
Background
At present, in the field of burn and wound, an artificial dermis dressing is often used as a wound repair material, the artificial dermis dressing in the prior art adopts a double-layer structure, the upper layer is a silica gel film layer, the lower layer is a collagen sponge layer, the upper layer silica gel film can imitate the skin effect of a human body, can prevent dryness, prevent infection and protect the wound, and the lower layer collagen sponge layer is a porous three-dimensional bracket structure, is directly contacted with the wound in use, and can promote granulation tissue to grow into and cover the wound to promote healing. However, such artificial dermis dressing of the prior art has the following problems: (1) The collagen sponge layer at the lower layer is a biological material, is easily dissolved by bacteria, has poor anti-infection capability and has slow wound healing speed; (2) The collagen sponge layer has high production cost, so that the price of the whole dressing product is high, and the economic burden of patients is large.
Disclosure of Invention
The utility model aims to provide a wound repair dressing which is used for solving the technical problems of poor anti-infection capability and high cost of the artificial dermis dressing in the prior art.
The utility model adopts the following technical scheme: the utility model provides a wound repair dressing, includes polyurethane layer, silica gel layer and gelatin sponge layer that is fixed together in proper order by outer to interior, and gelatin sponge layer is used for contacting with the wound, and gelatin sponge layer inside has porous structure, the silica gel layer adopts inside and outside bilayer structure, and inside and outside silica gel layer periphery is sealed, has the cavity layer between the inside, has the magnesium hydride powder in the cavity layer, and it has the bleeder vent to distribute on the silica gel layer of inlayer to lie in, and the diameter of bleeder vent is less than the diameter of magnesium hydride powder.
The area of the polyurethane layer is larger than that of the silica gel layer, the pressure-sensitive adhesive layer is arranged on the outer edge of the silica gel layer on the inner side of the polyurethane layer, and release paper is adhered to the surface of the pressure-sensitive adhesive layer.
The polyurethane layer and the outer silica gel layer and the inner silica gel layer and the gelatin sponge layer are all stuck and fixed together by pressure sensitive adhesive.
The diameter of each vent hole is 10 mu m, and the distance between every two adjacent vent holes is 1cm.
The thickness of the polyurethane layer is between 0.02 and 0.2 mm.
In the silica gel layers, the thickness of each layer of the inner silica gel layer and the outer silica gel layer is between 0.1 mm and 0.3 mm.
The thickness of the gelatin sponge layer is between 5 and 10 mm.
The beneficial effects of the utility model are as follows: the utility model adopts the gelatin sponge layer as the absorption layer, and the gelatin sponge layer is covered on the wound surface to play the roles of stopping bleeding, absorbing seepage and promoting the growth of granulation tissue of the wound surface because of the porous structure of the gelatin sponge layer; when wound exudate stretches into the space between the inner silica gel layer and the outer silica gel layer from the air holes, moisture in the exudate reacts with magnesium hydride to generate hydrogen, and the hydrogen overflows to the wound from the porous structures of the air holes and the gelatin sponge layer, and the hydrogen has the functions of resisting oxidation and inflammation, so that wound healing can be promoted. The gelatin sponge layer is adopted as the wound surface contact layer, is a non-biological material, can not be dissolved by bacteria, and avoids infection; the porous structure of the gelatin sponge layer can absorb more liquid, so that the hemostatic speed is high, and the wound healing promoting capability is stronger. The polyurethane layer at the outermost layer is waterproof and breathable, and plays a role in protecting wounds and preventing bacterial infection.
Preferably, the polyurethane layer is larger than the area of the silica gel layer, the polyurethane layer outside the silica gel layer is provided with the pressure-sensitive adhesive layer and the release paper, the release paper is removed when in use, and the edge of the polyurethane layer with the pressure-sensitive adhesive layer is stuck on the skin without damage, so that the wound repair dressing is stuck on the skin, and the displacement is prevented when in use.
Drawings
FIG. 1 is a cross-sectional view of a wound repair dressing according to one embodiment of the utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a plan view of the wound surface repair dressing of fig. 1 (the location of the vent is shown schematically).
In the figure: 1-polyurethane layer, 11-pressure-sensitive adhesive layer, 12-release paper, 2-silica gel layer, 21-air holes, 3-sponge layer and 4-magnesium hydride powder.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples.
The structure of the wound repair dressing according to one embodiment of the utility model is shown in fig. 1 to 3, the wound repair dressing of the embodiment comprises a polyurethane layer 1, a silica gel layer 2 and a gelatin sponge layer 3 which are sequentially fixed together from outside to inside, the gelatin sponge layer 1 is used for contacting with a wound, the inside of the gelatin sponge layer 1 is provided with a porous structure, the silica gel layer 2 adopts an inner-outer double-layer structure, the outer edges of the inner silica gel layer and the outer silica gel layer are closed, a cavity layer is arranged between the inner silica gel layer and the outer silica gel layer, magnesium hydride powder 4 is filled in the cavity layer, ventilation holes 21 are distributed on the silica gel layer positioned on the inner layer, and the diameter of the ventilation holes 21 is smaller than that of the magnesium hydride powder 4. The diameter of the ventilation holes 21 is 10 μm, and the distance between adjacent ventilation holes is 1cm.
The area of the polyurethane layer 1 is larger than that of the silica gel layer 2, the pressure-sensitive adhesive layer 11 is arranged on the outer edge of the silica gel layer on the inner side of the polyurethane layer 1, and release paper 12 is adhered to the surface of the pressure-sensitive adhesive layer 11. The pressure-sensitive adhesive layer 11 and the release paper 12 are both annular.
In this embodiment, the polyurethane layer 1 and the outer silica gel layer, and the inner silica gel layer and the gelatin sponge layer 3 are all adhered and fixed together by using pressure sensitive adhesive. The thickness of the polyurethane layer is between 0.02 and 0.2 mm. In the silica gel layer 2, the thickness of each layer of the inner silica gel layer and the outer silica gel layer is between 0.1 mm and 0.3 mm. The thickness of the gelatin sponge layer 3 is between 5 and 10 mm.
The wound repair dressing of this embodiment is prepared first in the preparation of a gelatin sponge layer, specifically, a gelatin sponge layer with a porous structure is prepared from gelatin solution by lyophilization, then the gelatin sponge layer is adhered to a silica gel layer with magnesium hydride powder inside, one side of the silica gel layer with air holes is adhered to the gelatin sponge layer, then the other side of the silica gel layer is adhered to a polyurethane layer with release paper at the edge, and finally the wound repair dressing is sealed and packaged.
When in use, the release paper at the edge of the polyurethane layer is removed, the gelatin sponge layer is covered on the wound surface, the edge of the polyurethane layer with the pressure-sensitive adhesive layer is stuck on the intact skin, and the gelatin sponge layer has a porous structure, so that the gelatin sponge layer plays roles of stopping bleeding, absorbing seepage and promoting the growth of granulation tissue of the wound surface; when wound exudate stretches into the space between the inner silica gel layer and the outer silica gel layer from the air holes, moisture in the exudate reacts with magnesium hydride to generate hydrogen, and the hydrogen overflows to the wound from the porous structures of the air holes and the gelatin sponge layer, and the hydrogen has the functions of resisting oxidation and inflammation, so that wound healing can be promoted. The polyurethane layer at the outermost layer plays roles of water resistance and ventilation, protects wounds and prevents bacterial infection. In the embodiment, the gelatin sponge layer is adopted as the wound surface contact layer, is a non-biological material, and cannot be dissolved by bacteria, so that infection is avoided; and the porous structure of the gelatin sponge layer can absorb more liquid, and has stronger hemostatic and wound healing promoting capacities.
The above embodiment is a preferred embodiment of the present utility model, and in other embodiments of the present utility model, the thicknesses of the polyurethane layer, the silica gel layer and the gelatin sponge layer may be flexibly changed according to actual needs; the distance and the size of the ventilation holes are also set according to actual needs.
It will be appreciated by those skilled in the art that various changes and modifications can be made to the utility model without departing from the spirit and scope of the utility model, which changes and modifications fall within the scope of the utility model as hereinafter claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A wound repair dressing, characterized in that: the novel adhesive tape comprises a polyurethane layer, a silica gel layer and a gelatin sponge layer which are sequentially fixed together from outside to inside, wherein the gelatin sponge layer is used for contacting with a wound, a porous structure is arranged inside the gelatin sponge layer, the silica gel layer adopts an inner layer and an outer layer, the outer edges of the inner layer and the outer layer of the silica gel layer are closed, a cavity layer is arranged between the inner layer and the outer layer of the silica gel layer, magnesium hydride powder is filled in the cavity layer, air holes are distributed in the silica gel layer positioned in the inner layer, the diameter of the air holes is smaller than that of the magnesium hydride powder, the area of the polyurethane layer is larger than that of the silica gel layer, a pressure-sensitive adhesive layer is arranged at the outer edge part of the silica gel layer on the inner side of the polyurethane layer, and release paper is adhered on the surface of the pressure-sensitive adhesive layer.
2. The wound repair dressing of claim 1, wherein: the polyurethane layer and the outer silica gel layer and the inner silica gel layer and the gelatin sponge layer are all stuck and fixed together by pressure sensitive adhesive.
3. The wound repair dressing of claim 1, wherein: the diameter of each vent hole is 10 mu m, and the distance between every two adjacent vent holes is 1cm.
4. The wound repair dressing of claim 1, wherein: the thickness of the polyurethane layer is between 0.02 and 0.2 mm.
5. The wound repair dressing of claim 1, wherein: in the silica gel layers, the thickness of each layer of the inner silica gel layer and the outer silica gel layer is between 0.1 mm and 0.3 mm.
6. The wound repair dressing of claim 1, wherein: the thickness of the gelatin sponge layer is between 5 and 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221107605.7U CN219646050U (en) | 2022-05-10 | 2022-05-10 | Wound repair dressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221107605.7U CN219646050U (en) | 2022-05-10 | 2022-05-10 | Wound repair dressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219646050U true CN219646050U (en) | 2023-09-08 |
Family
ID=87880919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221107605.7U Active CN219646050U (en) | 2022-05-10 | 2022-05-10 | Wound repair dressing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219646050U (en) |
-
2022
- 2022-05-10 CN CN202221107605.7U patent/CN219646050U/en active Active
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| GR01 | Patent grant |