Gamma-PGA-based local anesthesia patch

Abstract

The utility model relates to the technical field of medical instruments, in particular to a gamma-PGA-based local anesthesia patch which comprises an adjusting assembly, a protective layer, a waterproof layer, a gamma-PGA layer, an anesthetic layer and a release film which are sequentially arranged from top to bottom. One side edge of the protective layer is a stress edge; the adjusting assembly comprises a locking mechanism and a plurality of adjusting strips, one ends of the adjusting strips are connected to the stress edge, and the free ends of the adjusting strips penetrate through the locking mechanism to fix the adjusting strips through the locking mechanism. According to the utility model, the gamma-PGA layer is used, so that the patch has high moisture retention and high viscosity and can be attached to the skin, the allergic reaction or other uncomfortable reactions of the skin can be reduced due to the moisture retention, and drugs in the anesthetic layer can be retained in the gamma-PGA layer, so that a slow-release effect is achieved; the gamma-PGA layer can be extruded by pulling force in cooperation with the adjusting assembly, so that the release speed is increased, and the requirements of different crowds for the amount of anesthetic are met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a local anesthetic patch based on γ-PGA. Background Art

[0002] Anesthesia, as the name implies, "ma" means numbness and paralysis, and "zui" means drunken coma. Therefore, the meaning of anesthesia is to use drugs or other methods to make the patient lose sensation temporarily as a whole or locally, so as to achieve the purpose of painless surgical treatment. Anesthesiology is a science that uses the basic theories, clinical knowledge and techniques related to anesthesia to eliminate the surgical pain of patients, ensure the safety of patients, and create good conditions for surgery. Now, anesthesiology has become an independent specialized discipline in clinical medicine, mainly including clinical anesthesiology, first aid and resuscitation medicine, intensive care medicine, pain diagnosis and treatment, and the research of other related medicine and its mechanisms. It is a comprehensive discipline that studies anesthesia, analgesia, first aid and resuscitation, and critical care medicine. Among them, clinical anesthesia is the main part of modern anesthesiology.

[0003] Each injection of anesthetic requires the replacement of a syringe or the use of an analgesia pump for anesthesia, but the syringe also needs to be inserted, which is very inconvenient to use. In order to facilitate the process of anesthesia, for local surgery or postoperative pain relief, people use anesthetic patches similar to band-aids for anesthesia. Such anesthetic patches use an attachment soaked with anesthetic to adhere to the skin surface for anesthesia. The structure of such anesthetic patches is too simple. Due to individual differences, the release rate of the same anesthetic patch cannot match different individuals, resulting in poor applicability. Therefore, a local anesthetic patch based on γ-PGA that can adjust the release rate according to needs is required. Summary of the Utility Model

[0004] In order to overcome the defects of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a local anesthetic patch based on γ-PGA that can adjust the release rate according to needs.

[0005] In order to solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0006] A local anesthetic patch based on γ-PGA, comprising an adjustment component, a protective layer, a waterproof layer, a γ-PGA layer, an anesthetic drug layer and a release film, which are arranged in sequence from top to bottom;

[0007] One side edge of the protective layer is a stress edge;

[0008] The adjustment component includes a locking mechanism and a plurality of adjustment strips. One end of the adjustment strip is connected to the stress edge, and the free end passes through the locking mechanism and is fixed by the locking mechanism.

[0009] The projected shapes of the protective layer, waterproof layer, γ-PGA layer, and anesthetic drug layer are the same, and the projected shape of the release film is larger than any of the projected shapes of the protective layer, waterproof layer, γ-PGA layer, and anesthetic drug layer.

[0010] The beneficial effects of the present utility model are as follows: By using the γ-PGA layer, γ-PGA, namely polyglutamic acid, is a biopolymer with high moisture retention and high viscosity. It can adhere to the skin, and its moisture retention property can reduce skin allergic reactions or other discomfort reactions. The local anesthetic patch structure with γ-PGA can retain the drugs in the anesthetic drug layer in the γ-PGA layer, thereby slowing down the evaporation effect of the anesthetic drugs, and then prolonging the time that the anesthetic drugs stay on the skin, achieving a sustained release effect; in cooperation with the adjustment component, the γ-PGA layer can be squeezed by tension, thereby increasing the release speed to meet the needs of different people for the amount of anesthetic drugs; due to the larger projected shape of the release film, it is convenient to tear the patch, enabling the patient to change the dressing by themselves. The anesthetic drugs are absorbed through the skin without the need for injection, reducing the pain of the patient. Description of the Drawings

[0011] Figure 1 The figure shows a top view of a local anesthetic patch based on γ-PGA according to a specific embodiment of the present utility model;

[0012] Figure 2 The figure shows a cross-sectional view of a local anesthetic patch based on γ-PGA according to a specific embodiment of the present utility model;

[0013] Reference numerals: 1, adjustment component; 11, locking mechanism; 12, adjustment strip; 13, friction block; 2, protective layer; 21, force-receiving edge; 3, waterproof layer; 31, ventilation holes; 22, wrinkled strip; 4, γ-PGA layer; 5, anesthetic drug layer; 6, release film; 7, rounded corner setting. Specific Embodiments

[0014] To describe the technical content, achieved objectives, and effects of the present utility model in detail, the following is described in conjunction with the embodiments and with reference to the drawings.

[0015] Please refer to Figures 1 to 2 As shown, a local anesthetic patch based on γ-PGA of the present utility model includes an adjustment component 1, a protective layer 2, a waterproof layer 3, a γ-PGA layer 4, an anesthetic drug layer 5, and a release film 6 arranged in sequence from top to bottom;

[0016] One side edge of the protective layer 2 is a force-receiving edge 21;

[0017] The adjusting component 1 includes a locking mechanism 11 and a plurality of adjusting bars 12. One end of each adjusting bar 12 is connected to the stress side 21, and the free end passes through the locking mechanism 11, and the adjusting bar 12 is fixed by the locking mechanism 11.

[0018] The projection shapes of the protective layer 2, the waterproof layer 3, the γ-PGA layer 4, and the anesthetic drug layer 5 are the same, and the projection shape of the release film 6 is larger than any of the projection shapes of the protective layer 2, the waterproof layer 3, the γ-PGA layer 4, and the anesthetic drug layer 5.

[0019] As can be seen from the above description, by using the γ-PGA layer 4, γ-PGA, i.e., polyglutamic acid, is a biopolymer with high moisture retention and high viscosity. It can adhere to the skin, and its moisture retention can reduce skin allergic reactions or other discomfort reactions. The local anesthetic patch structure with γ-PGA can retain the drug in the anesthetic drug layer 5 in the γ-PGA layer 4, thereby slowing down the evaporation effect of the anesthetic drug, and then prolonging the time the anesthetic drug stays on the skin, achieving a sustained release effect; cooperating with the adjusting component 1, it can make the γ-PGA layer 4 be squeezed by the tensile force, thereby increasing the release speed and meeting the needs of different people for the amount of anesthetic drug; due to the larger projection shape of the release film 6, it is convenient to tear the patch, enabling the patient to change the dressing by himself. The anesthetic drug is absorbed through the skin without injection, reducing the pain of the patient.

[0020] Preferably, the protective layer 2 is made of a breathable material, and the waterproof layer 3 is provided with a plurality of ventilation holes 31.

[0021] As can be seen from the above description, through the protective layer 2 made of a breathable material and the design of the ventilation holes 31, the comfort of the patient can be increased.

[0022] Preferably, the protective layer 2 is provided with wavy folding strips 22 inside.

[0023] As can be seen from the above description, through the wavy folding strips 22, when being pulled, it can be bent along the folds, so that the stress on the protective layer 2 is uniform, and then the stress on the local anesthetic patch is uniform, and thus uniform sustained release is achieved.

[0024] Preferably, the edges of the protective layer 2, the waterproof layer 3, the γ-PGA layer 4, and the anesthetic drug layer 5 are rounded 7.

[0025] Preferably, a friction block 13 is provided on the free end of the adjusting bar 12.

[0026] As can be seen from the above description, through the setting of the friction block 13, the friction can be increased, which is convenient for adjustment.

[0027] Preferably, a writing layer is provided on the surface of the locking mechanism 11.

[0028] As can be seen from the above description, through the setting of the writing layer, doctors and nurses can write various types of information on the local anesthetic patch as needed, such as the replacement time, which is convenient for the patient to replace it by himself. Embodiment 1

[0029] A local anesthetic patch based on γ-PGA includes an adjustment component 1, a protective layer 2, a waterproof layer 3, a γ-PGA layer 4, an anesthetic drug layer 5, and a release film 6, which are arranged in sequence from top to bottom;

[0030] One side edge of the protective layer 2 is a stress edge 21;

[0031] The adjustment component 1 includes a locking mechanism 11 and five adjustment strips 12. One end of the adjustment strip 12 is connected to the stress edge 21, and the free end passes through the locking mechanism 11, and the adjustment strip 12 is fixed by the locking mechanism 11;

[0032] The projected shapes of the protective layer 2, the waterproof layer 3, the γ-PGA layer 4, and the anesthetic drug layer 5 are the same, and the projected shape of the release film 6 is larger than any of the projected shapes of the protective layer 2, the waterproof layer 3, the γ-PGA layer 4, and the anesthetic drug layer 5.

[0033] The protective layer 2 is made of a breathable material, and the waterproof layer 3 is provided with a plurality of ventilation holes 31.

[0034] The protective layer 2 is provided with wavy folding strips 22 inside.

[0035] The edges of the protective layer 2, the waterproof layer 3, the γ-PGA layer 4, and the anesthetic drug layer 5 are rounded 7.

[0036] A friction block 13 is arranged on the free end of the adjustment strip 12.

[0037] A writing layer is arranged on the surface of the locking mechanism 11. Embodiment 2

[0038] A local anesthetic patch based on γ-PGA includes an adjustment component 1, a protective layer 2, a waterproof layer 3, a γ-PGA layer 4, an anesthetic drug layer 5, and a release film 6, which are arranged in sequence from top to bottom;

[0039] One side edge of the protective layer 2 is a stress edge 21;

[0040] The adjustment component 1 includes a locking mechanism 11 and one adjustment strip 12. One end of the adjustment strip 12 is connected to the stress edge 21, and the free end passes through the locking mechanism 11, and the adjustment strip 12 is fixed by the locking mechanism 11;

[0041] The projected shapes of the protective layer 2, the waterproof layer 3, the γ-PGA layer 4, and the anesthetic drug layer 5 are the same, and the projected shape of the release film 6 is larger than any of the projected shapes of the protective layer 2, the waterproof layer 3, the γ-PGA layer, and the anesthetic drug layer 5.

[0042] The protective layer 2 is made of a breathable material, and the waterproof layer 3 is provided with a plurality of breathable holes 31.

[0043] The protective layer 2 is provided with wavy folding strips 22 inside.

[0044] A friction block 13 is provided at the free end of the adjusting strip 12.

[0045] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the related technical field, is equally included in the patent protection scope of the present invention.

Claims

1. A local anesthetic patch based on γ-PGA, characterized in that: It includes an adjustment component, a protective layer, a waterproof layer, a γ-PGA layer, an anesthetic drug layer and a release film which are arranged in sequence from top to bottom; One side edge of the protective layer is a stress-bearing edge; The adjustment assembly includes a locking mechanism and a plurality of adjustment strips, one end of the adjustment strip is connected to the force-bearing edge, and the free end passes through the locking mechanism to fix the adjustment strip; The projection shapes of the protective layer, waterproof layer, γ-PGA layer and anesthetic drug layer are the same, and the projection shape of the release film is larger than any projection shape of the protective layer, waterproof layer, γ-PGA layer and anesthetic drug layer.

2. The γ-PGA-based local anesthetic patch according to claim 1, characterized in that: The protective layer is made of a breathable material, and the waterproof layer is provided with a plurality of breathable holes.

3. The local anesthetic patch based on γ-PGA according to claim 1, characterized in that: The protective layer is provided with corrugated strips.

4. The γ-PGA-based local anesthetic patch according to claim 1, characterized in that: The edges of the protective layer, the waterproof layer, the γ-PGA layer and the anesthetic drug layer are rounded.

5. The local anesthetic patch based on γ-PGA according to claim 1, characterized in that: A friction block is arranged on the free end of the adjusting strip.

6. The γ-PGA-based local anesthesia patch according to claim 1, characterized in that: A writing layer is arranged on the surface of the locking mechanism.

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