CN220695441U - Deodorizing type liquid absorbing dressing - Google Patents
Deodorizing type liquid absorbing dressing Download PDFInfo
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- CN220695441U CN220695441U CN202321535553.8U CN202321535553U CN220695441U CN 220695441 U CN220695441 U CN 220695441U CN 202321535553 U CN202321535553 U CN 202321535553U CN 220695441 U CN220695441 U CN 220695441U
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- layer
- deodorizing
- nonwoven
- silicone gel
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- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 47
- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 230000002745 absorbent Effects 0.000 claims abstract description 55
- 239000002250 absorbent Substances 0.000 claims abstract description 55
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 51
- 239000000499 gel Substances 0.000 claims abstract description 49
- 229920000642 polymer Polymers 0.000 claims abstract description 30
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 24
- 239000005871 repellent Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000002940 repellent Effects 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000741 silica gel Substances 0.000 claims abstract description 9
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 9
- 230000004308 accommodation Effects 0.000 claims abstract description 5
- 239000002781 deodorant agent Substances 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000004332 deodorization Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 238000005213 imbibition Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 139
- 208000027418 Wounds and injury Diseases 0.000 description 29
- 206010052428 Wound Diseases 0.000 description 26
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001131 Pulp (paper) Polymers 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 4
- 208000014674 injury Diseases 0.000 description 3
- 230000000474 nursing effect Effects 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 208000022362 bacterial infectious disease Diseases 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000037380 skin damage Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The application provides a deodorizing liquid absorbing dressing which comprises a back lining layer, a silicone gel layer, an intermediate layer and a release film, wherein one surface of the silicone gel layer is sticky and is used for being stuck on the skin of an affected part, and the edge of the other surface of the silicone gel layer is connected with the edge of the back lining layer so as to form an accommodating space between the silicone gel layer and the back lining layer; the intermediate layer is located among the accommodation space, and the intermediate layer has laminated in proper order from being close to one side of silica gel layer to being close to the one side of backing layer: the first hydrophilic non-woven fabric layer, the second hydrophilic non-woven fabric layer, the high polymer composite absorbent paper, the deodorizing non-woven fabric layer and the water repellent layer; the release film is covered on one surface of the silica gel layer for being stuck on the skin of an affected part. The one side of the silica gel layer of the imbibition dressing of deodorization formula of this application has the viscidity, can paste on affected part skin when using, need not to use other articles to fix, and the imbibition dressing of this application can deodorization, can adsorb the foul smell that wound position produced for the change frequency of imbibition dressing reduces, reduces wound damage and pain.
Description
Technical Field
The application relates to the technical field of medical dressing, in particular to a deodorizing liquid-absorbing dressing.
Background
The existing wound nursing liquid-absorbing dressing is generally used for absorbing seepage of wounds, and because the core body of the wound nursing liquid-absorbing dressing is formed by wrapping wood pulp with toilet paper, the product is good in comfort and has the function of absorbing a certain amount of seepage, but the existing liquid-absorbing dressing is non-adhesive, and the liquid-absorbing dressing needs to be fixed on the skin surface of an affected part by means of bandages, medical adhesive tapes and the like when in use, so that the wound nursing liquid-absorbing dressing is inconvenient to use clinically.
In addition, there are some chronic wounds which are difficult to heal clinically at present, and a large amount of thick liquid is often oozed out from the wounds, so that the oozing liquid is more frequent, and even the tissue decay and bacterial infection of part of the wounds can cause malodorous smell at the wound sites, so that the replacement frequency of the liquid absorbing dressing is higher, and the wound injury and pain are increased.
Disclosure of Invention
The application provides a deodorant type liquid absorbing dressing, has solved liquid absorbing dressing and needs to be fixed on the wound with the help of the article to and the production of wound foul smell leads to liquid absorbing dressing to change the problem of frequency height.
In order to solve the technical problems, the application provides a deodorizing liquid absorbing dressing, which comprises a backing layer, a silicone gel layer, an intermediate layer and a release film, wherein one surface of the silicone gel layer is sticky and is used for being adhered to the skin of an affected part, and the edge of the other surface of the silicone gel layer is connected with the edge of the backing layer so as to form an accommodating space between the silicone gel layer and the backing layer; the intermediate layer is located among the accommodation space, and the intermediate layer has laminated in proper order from being close to one side of silica gel layer to being close to the one side of backing layer: the first hydrophilic non-woven fabric layer, the second hydrophilic non-woven fabric layer, the high polymer composite absorbent paper, the deodorizing non-woven fabric layer and the water repellent layer; the release film is covered on one surface of the silica gel layer for being stuck on the skin of an affected part.
In one embodiment, the polymer composite absorbent paper is a toilet paper wrapped wood pulp mixed deodorizing polymer absorbent resin, or the polymer composite absorbent paper is a hydrophilic non-woven fabric wrapped wood pulp mixed deodorizing polymer absorbent resin.
In one embodiment, the surface of the deodorizing nonwoven layer has a porous structure.
In one embodiment, the first hydrophilic nonwoven layer and the second hydrophilic nonwoven layer are both PP nonwoven or ES nonwoven or hot air nonwoven, and the deodorizing nonwoven layer is a deodorized PP nonwoven layer or a deodorized ES nonwoven or a deodorized hot air nonwoven.
In one embodiment, the water-repellent layer is a PP composite PE breathable film or SMS nonwoven.
In one embodiment, the first hydrophilic non-woven layer, the second hydrophilic non-woven layer, the deodorizing non-woven layer and the water-repellent layer are sealed on four sides by means of ultrasonic waves or heating, one side of the first hydrophilic non-woven layer away from the second hydrophilic non-woven layer is adhered to the silicone gel layer, and one side of the water-repellent layer away from the deodorizing non-woven layer is adhered to the backing layer.
In one embodiment, the edge of the silicone gel layer adjacent to the side of the first hydrophilic nonwoven layer is bonded to the edge of the side of the backing layer adjacent to the water repellent layer.
In one embodiment, the release film comprises a folded edge release film and a straight edge release film, one edge of the folded edge release film being folded outwardly to form a folded edge for tearing; the edge of the straight edge release film is covered on the edge of the folded edge release film.
In one embodiment, the silicone gel layer is a mesh structure with a low tack surface.
In one embodiment, the backing layer is a TPU film.
The application provides a liquid absorbing dressing of deodorization type, including backing layer, silica gel layer, intermediate level and from the type membrane, the one side of silica gel layer has the viscidity to be used for pasting the liquid absorbing dressing of deodorization type on affected part skin, make the liquid absorbing dressing of deodorization type have self-adhesion effect, need not to fix with the help of the foreign matter such as bandage, medical sticky tape during the use, and self-adhesion effect makes the liquid absorbing dressing of deodorization type repeatedly usable, conveniently observe patient's wound. The edge of the other side of the silicone gel layer is connected with the edge of the backing layer to form an accommodating space between the silicone gel layer and the backing layer; the intermediate layer is located among the accommodation space, and the intermediate layer has laminated in proper order from being close to one side of silica gel layer to being close to the one side of backing layer: the first hydrophilic non-woven fabric layer, the second hydrophilic non-woven fabric layer, the high polymer composite absorbent paper, the deodorizing non-woven fabric layer and the water repellent layer; the three non-woven fabric layers can increase the softness and comfort of the whole deodorizing type liquid absorbent dressing, especially the deodorizing non-woven fabric layers can adsorb the malodor odor emitted from the wound part, so that the malodor odor emission is reduced, the replacement frequency of the liquid absorbent dressing is lower, the wound injury and pain are reduced, and the life quality of patients is improved; the polymer composite absorbent paper can also enhance the liquid absorbing and thickening capability of the deodorizing liquid absorbing dressing.
Drawings
Fig. 1 is a schematic structural view of a deodorizing type liquid absorbent dressing according to an embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operational steps involved in the embodiments may be sequentially exchanged or adjusted in a manner apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of describing certain embodiments and are not necessarily intended to imply a required composition and/or order.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a deodorizing absorbent dressing according to an embodiment of the present application. The application provides a deodorizing liquid absorbent dressing comprising a backing layer 10, a silicone gel layer 20, an intermediate layer 30, and a release film 40.
One side of the silicone gel layer 20 (the side of the silicone gel layer 20 away from the backing layer 10) has adhesiveness for adhering the deodorizing type liquid absorbent dressing to the skin of an affected part, so that the deodorizing type liquid absorbent dressing has self-adhesion, is not required to be fixed by means of a bandage, a medical adhesive tape or other foreign objects during use, and the self-adhesion enables the deodorizing type liquid absorbent dressing to be repeatedly used, thereby facilitating the observation of wounds of patients. The release film 40 covers one side of the silicone gel layer 20 for adhering to the skin of the affected part, and the release film 40 as a protective film can protect one side of the silicone gel layer 20 for adhering to the skin of the affected part when the liquid absorbent dressing is not used, so that one side of the silicone gel layer 20 for adhering to the skin of the affected part keeps adhesive.
The edge of the other side of the silicone gel layer 20 (the side of the silicone gel layer 20 adjacent to the backing layer 10) is connected to the edge of the backing layer 10 to form a receiving space between the silicone gel layer 20 and the backing layer 10. The intermediate layer 30 is provided in the accommodation space, and the intermediate layer 30 is laminated in this order from the side near the silicone gel layer 20 to the side near the backing layer 10: a first hydrophilic nonwoven layer 31, a second hydrophilic nonwoven layer 32, a polymer composite absorbent paper 33, a deodorizing nonwoven layer 34, and a water-repellent layer 35.
The three-layer non-woven fabric layer can increase the softness and the comfort of the whole deodorizing type liquid absorbent dressing, and especially the deodorizing type non-woven fabric layer can adsorb the malodor smell emitted from a wound part, so that the malodor smell emission is reduced, the replacement frequency of the liquid absorbent dressing is lower, the wound injury and pain are reduced, and the life quality of patients is improved. The polymer composite absorbent paper 33 also enhances the liquid absorbing ability of the deodorizing type liquid absorbing dressing.
The first hydrophilic nonwoven layer 31 and the second hydrophilic nonwoven layer 32 are arranged between the polymer composite absorbent paper 33 and the silicone gel layer 20, so that on the one hand, the flexibility of the deodorizing type liquid absorbent dressing is increased, and on the other hand, the hydrophilicity of the hydrophilic nonwoven layers enables wound liquid absorbed from the silicone gel layer 20 to be conducted into the polymer composite absorbent paper 33 with higher liquid absorption rate. The deodorant non-woven fabric layer 34 has water repellency, so that the deodorant non-woven fabric layer 34 cannot be arranged between the silicone gel layer 20 and the polymer composite absorbent paper 33, so that wound liquid cannot be absorbed by the polymer composite absorbent paper 33, and meanwhile, the deodorant non-woven fabric layer 34 is arranged on one side of the polymer composite absorbent paper 33 far away from the silicone gel layer 20 by utilizing the water repellency of the deodorant non-woven fabric layer 34, so that the wound liquid can be effectively locked in the polymer composite absorbent paper 33, and the penetration of the liquid can be prevented.
Since the adhesive is generally smeared on the backing layer 10 to adhere the backing layer 10 to the silicone gel layer 20, the adhesive is easy to react with water when in direct contact with water, and the adhesive on the backing layer 10 is reduced, the water-repellent layer 35 is arranged between the backing layer 10 and the deodorant non-woven fabric, so that the liquid absorbed by the polymer composite absorbent paper 33 can be prevented from flowing onto the backing layer 10.
In one embodiment, the side of the silicone gel layer 20 facing the first hydrophilic non-woven layer 31 is also tacky, and the side of the backing layer 10 facing the silicone gel layer 20 is tacky, such that the edge of the side of the silicone gel layer 20 adjacent to the first hydrophilic non-woven layer 31 is bonded to the edge of the side of the backing layer 10 adjacent to the water repellent layer 35. The silicone gel layer 20 and backing layer 10 may also be joined by other means, such as ultrasonic, heat or glue, for example, four-sided sealing.
In one embodiment, the silicone gel layer 20 is a mesh structure, so that the polymer composite absorbent paper 33 can absorb the liquid discharged from the affected part through the mesh structure of the silicone gel layer 20, and the silicone gel layer 20 has a good air permeability in the mesh structure. In particular, the holes of the mesh of the silicone gel layer 20 may be circular, for example, but may also be of other shapes, such as oval, rectangular or parallelogram.
Preferably, the silicone gel layer 20 should not be too viscous to ensure that the silicone gel layer 20 is secured to the wound and that it does not adhere to the wound during removal, thereby avoiding skin damage. Thus, the surface of the silicone gel layer 20 in this embodiment exhibits low tackiness. Low tack means: the peel force of the adhesive spline, which is 25mm wide, is between 0.2N and 1.5N. The silicone gel layer 20 is treated with low viscosity, so that pain caused by dressing change can be reduced, and the silicone gel can be repeatedly adhered, so that doctors can observe wound conveniently.
In one embodiment, the polymer composite absorbent paper 33 is a toilet paper wrapped wood pulp mixed deodorizing polymer absorbent resin, or the polymer composite absorbent paper 33 is a hydrophilic non-woven fabric wrapped wood pulp mixed deodorizing polymer absorbent resin. Compared with some super absorbent resin composite layers in the prior art, the polymer composite absorbent paper 33 has larger liquid absorption amount, and especially the core layer formed by wrapping the toilet paper is softer, so that the product is more comfortable and more fit in the use process. Compare in the structure of toilet paper parcel wood pulp, still wrapped up deodorant polymer water absorbent resin (Super Absorbent Polymer, SAP) in the polymer composite absorbent paper 33 of this application, the high absorbent resin not only can absorb wound seepage liquid betterly, can also adsorb the foul smell that wound position gives off, reduces the foul smell and gives off for the change frequency of imbibition dressing is lower, has reduced wound damage and pain, improves patient's quality of life.
In one embodiment, the surface of the deodorizing nonwoven layer 34 has a porous structure, and the surface of the nonwoven layer may be treated to have pore diameters, and the porous structure has a larger surface area, so that the odor may be physically adsorbed by the porous structure, thereby providing the deodorizing function to the nonwoven layer.
In one embodiment, the first hydrophilic nonwoven layer 31 and the second hydrophilic nonwoven layer 32 are PP (polypropylene) nonwoven or ES (Ethylene-Propylene Side By Side) nonwoven or hot air nonwoven, and the deodorizing nonwoven layer 34 is a deodorized PP nonwoven layer or a deodorized ES nonwoven or a deodorized hot air nonwoven.
In one embodiment, the water repellent layer 35 is a PP composite PE (Polyethylene) breathable film or SMS (spbond+meltblow+ Spunbond Nonwovens) nonwoven.
In one embodiment, the first hydrophilic non-woven layer 31, the second hydrophilic non-woven layer 32, the deodorizing non-woven layer 34 and the water-repellent layer 35 are sealed at four sides by means of ultrasonic waves or heating, and the polymeric composite absorbent paper 33 is disposed in the space of the four sides sealed. The side of the first hydrophilic nonwoven layer 31 remote from the second hydrophilic nonwoven layer 32 is bonded to the silicone gel layer 20, and the side of the water-repellent layer 35 remote from the deodorizing nonwoven layer 34 is bonded to the backing layer 10.
In one embodiment, the release film 40 comprises a folded release film 40 and a straight edge release film 40 side by side with the folded release film 40, one end of the folded release film 40 is adhered to the silicone layer 20 and the other end is folded outwardly to form a folded edge for tearing. The edge of the side of the straight edge release film 40 connected with the edge folding release film 40 is overlapped at the edge of the edge folding release film 40. The release film 40 may be a Polyethylene (PE) film.
In one embodiment, the backing layer 10 is a Polyurethane (PU) film, such as a thermoplastic polyurethane (Thermoplastic Poly Urethane, TPU) film, which has high air permeability and also functions as a waterproof and antibacterial film.
The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.
Claims (10)
1. A deodorizing absorbent dressing comprising:
a backing layer;
a silicone gel layer having one side thereof having an adhesiveness for adhering to the skin of an affected part, the other side edge of the silicone gel layer being connected to the edge of the backing layer to form an accommodating space between the silicone gel layer and the backing layer;
an intermediate layer disposed in the accommodation space, the intermediate layer being laminated in order from a side close to the silicone gel layer to a side close to the backing layer: the first hydrophilic non-woven fabric layer, the second hydrophilic non-woven fabric layer, the high polymer composite absorbent paper, the deodorizing non-woven fabric layer and the water repellent layer;
and the release film is covered on one surface of the silica gel layer, which is used for being stuck on the skin of an affected part.
2. The deodorizing absorbent dressing as set forth in claim 1, wherein the polymer composite absorbent paper is a toilet paper-wrapped wood pulp-mixed deodorizing polymer absorbent resin, or wherein the polymer composite absorbent paper is a hydrophilic nonwoven-wrapped wood pulp-mixed deodorizing polymer absorbent resin.
3. The deodorizing liquid absorbent dressing as set forth in claim 1, wherein the surface of said deodorizing nonwoven layer has a porous structure.
4. The deodorizing absorbent dressing as set forth in claim 1 wherein the first hydrophilic nonwoven layer and the second hydrophilic nonwoven layer are PP nonwoven or ES nonwoven or hot air nonwoven, and the deodorizing nonwoven layer is a deodorized PP nonwoven layer or a deodorized ES nonwoven or a deodorized hot air nonwoven.
5. A deodorant liquid absorbent dressing according to claim 1, wherein said water-repellent layer is a PP composite PE breathable film or an SMS nonwoven.
6. The deodorizing absorbent dressing as set forth in claim 1 wherein said first hydrophilic nonwoven layer, said second hydrophilic nonwoven layer, said deodorizing nonwoven layer and said water repellent layer are sealed on four sides by means of ultrasonic waves, heating or gluing, wherein the side of said first hydrophilic nonwoven layer remote from said second hydrophilic nonwoven layer is bonded to said silicone layer, and the side of said water repellent layer remote from said deodorizing nonwoven layer is bonded to said backing layer.
7. A deodorant liquid absorbent dressing according to claim 1, wherein the edge of the silicone gel layer adjacent to the side of the first hydrophilic nonwoven layer is bonded to the edge of the backing layer adjacent to the side of the water repellent layer.
8. A deodorant liquid absorbent dressing according to claim 1, wherein said release film comprises a hem release film and a straight edge release film, one edge of said hem release film being folded outwardly to form a hem for tearing; the edge of the straight edge release film is covered at the edge of the folded edge release film.
9. A deodorant liquid absorbent dressing according to claim 1, wherein said silicone gel layer is a mesh structure and said silicone gel layer has a low tackiness on the surface thereof.
10. A deodorant liquid absorbent dressing according to claim 1, wherein said backing layer is a TPU film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321535553.8U CN220695441U (en) | 2023-06-15 | 2023-06-15 | Deodorizing type liquid absorbing dressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321535553.8U CN220695441U (en) | 2023-06-15 | 2023-06-15 | Deodorizing type liquid absorbing dressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220695441U true CN220695441U (en) | 2024-04-02 |
Family
ID=90441763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321535553.8U Active CN220695441U (en) | 2023-06-15 | 2023-06-15 | Deodorizing type liquid absorbing dressing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220695441U (en) |
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2023
- 2023-06-15 CN CN202321535553.8U patent/CN220695441U/en active Active
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