Remaining needle connector fixing paste

Abstract

The utility model relates to an indwelling needle connector fixing paste. The remaining needle connector fixing paste comprises a pasting layer used for being pasted on the surface of a human body; the bearing layer is arranged on one side surface of the adhesive layer and is used for bearing an indwelling needle joint; the at least one group of fixing belts and fixing rings are arranged on the surface of the supporting layer; the fixing belts and the fixing rings in the same group are distributed along the same straight line; wherein the fixing band is provided with a fixing end and a limiting end, the fixing end is fixedly connected with the bearing layer, and the limiting end is configured to detachably penetrate through the fixing ring, so that a fixing space used for fixing the remaining needle connector is formed between the fixing band and the bearing layer. According to the scheme, a detachable fixing structure can be formed for the indwelling needle connector, the phenomenon that the needle head of the indwelling needle is loosened due to shaking of the indwelling needle connector is effectively reduced, the stability of the indwelling needle in use is improved, and meanwhile the convenience of the indwelling needle connector in use is improved in a detachable fixing mode.

Description

Technical Field

[0001] The present application relates to the field of medical and health technology, and in particular to an indwelling needle connector fixing patch. Background Art

[0002] In the medical field, indwelling needles are a common venous puncture device and are widely used in the infusion treatment of various patients. Indwelling needles insert the catheter into the blood vessel through a one-time puncture to facilitate multiple subsequent infusions or blood collections, reducing the pain and risks of repeated punctures to patients.

[0003] Medical indwelling needles are generally composed of a needle part and a connector part. During use, the needle part of the indwelling needle needs to be fixed on the skin surface after puncture to prevent it from moving or falling off. The connector part of the indwelling needle is connected to the needle part through a catheter, which is used as an access point for subsequent infusion.

[0004] In the related technology, medical staff usually put a dressing around the needle to achieve stable fixation of the needle part. Since the joint part itself has no fixing measures, it only relies on the connection between the catheter and the needle to maintain the relative position. When the patient is active (such as turning over, walking, etc.), the joint part is easily shaken by external force, causing the needle to loosen or even fall off completely, making it impossible to continue infusion or blood collection, and may even cause serious consequences such as vascular damage and infection. Utility Model Content

[0005] In order to solve or partially solve the problems existing in the related technology, the present application provides a retention needle connector fixing patch, which can form a detachable fixing structure for the retention needle connector, effectively reduce the loosening of the retention needle needle due to the shaking of the retention needle connector, improve the stability of the retention needle during use, and at the same time use a detachable fixing method to improve the convenience of the retention needle connector during use.

[0006] The first aspect of the present application provides an indwelling needle connector fixing patch, comprising:

[0007] An adhesive layer, used for adhering to the surface of the human body;

[0008] A supporting layer disposed on one side of the adhesive layer, the supporting layer being used to support an indwelling needle connector; and

[0009] At least one group of fixing belts and fixing rings are arranged on the surface of the supporting layer; the same group of fixing belts and fixing rings are distributed along the same straight line; wherein the fixing belt has a fixing end (131) and a limiting end, the fixing end (131) is fixedly connected to the supporting layer, and the limiting end is configured to be detachable and pass through the fixing ring, so that a fixed space for fixing the indwelling needle connector is formed between the fixing belt and the supporting layer.

[0010] In some embodiments, the longitudinal projection area of ​​the supporting layer on the adhesive layer is smaller than the transverse cross-sectional area of ​​the adhesive layer.

[0011] In some embodiments, the supporting layer is made of silicone.

[0012] In some embodiments, one end of the supporting layer is flush with an end surface of the adhesive layer.

[0013] In some embodiments, the supporting layer is provided with a pressure-proof protrusion extending in a direction away from the adhesive layer, and the pressure-proof protrusion is located at an end of the supporting layer that is flush with the end surface of the adhesive layer.

[0014] In some embodiments, a smooth layer is provided on the inner side of the fixing belt.

[0015] In some embodiments, the indwelling needle connector fixing patch includes two sets of fixing belts and fixing rings, and the two sets of fixing belts and fixing rings are arranged and distributed along the placement direction of the indwelling needle connector.

[0016] In some embodiments, the indwelling needle connector fixing patch further includes: a limit stop block disposed on the surface of the supporting layer, the limit stop block being used to limit and fix the bottom of the indwelling needle connector; the limit stop block is located on the same side of at least one group of the fixing belt and the fixing ring.

[0017] In some embodiments, the limiting block is provided with a limiting side wall for abutting against the bottom of the indwelling needle connector, and the limiting side wall is in a trumpet shape.

[0018] In some embodiments, the indwelling needle connector fixing patch also includes: a reinforcement layer arranged on the adhesive layer, the reinforcement layer is arranged around the supporting layer; a limiting space is formed between the reinforcement layer and the adhesive layer, and a limiting convex edge is arranged on the edge of the supporting layer, and the limiting convex edge is arranged in the limiting space.

[0019] The technical solution provided by this application may have the following beneficial effects:

[0020] The technical solution of the present application can be directly adhered to the human body surface through the adhesive layer, and a detachable fixing structure is formed by using at least one set of fixing belts and a fixing ring on the supporting layer to realize detachable fixation of the indwelling needle connector, effectively reducing the loosening of the indwelling needle needle due to the shaking of the indwelling needle connector, and improving the stability of the indwelling needle during use. At the same time, by using the detachable fixing method, when infusion or blood collection operations are required, the indwelling needle connector can be released to make it more convenient to use.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent by describing in more detail exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0023] Figure 1 is a schematic structural diagram of an indwelling needle connector fixing patch shown in an embodiment of the present application;

[0024] Figure 2 is another structural schematic diagram of the indwelling needle connector fixing patch shown in the embodiment of the present application;

[0025] Figure 3 is a schematic diagram of the use of the indwelling needle connector fixing patch shown in the embodiment of the present application;

[0026] Figure 4 It is another structural schematic diagram of the indwelling needle connector fixing patch shown in the embodiment of the present application.

[0027] Attached figures: 100, indwelling needle connector fixing patch; 110, adhesive layer; 120, supporting layer; 121, pressure-proof protrusion; 122, limiting convex edge; 130, fixing belt; 131, fixing end; 132, limiting end; 133, smooth layer; 140, fixing ring; 150, limiting block; 151, limiting side wall; 160, reinforcement layer; 170, limiting space; 200, medical dressing. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0029] It should be understood that although the terms "first", "second", "third", etc. may be used in the present application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0030] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] An indwelling needle is also called an intravenous cannula needle. It is generally divided into two parts: the indwelling needle needle head and the indwelling needle connector. The indwelling needle needle head and the indwelling needle connector are generally connected by a catheter. The indwelling needle connector is generally used to puncture the human skin, and the indwelling needle connector is used to connect an external infusion pump or other equipment to ensure that the drug can be safely and effectively introduced into the human body.

[0033] In the related art, medical staff usually put a dressing around the needle to achieve stable fixation of the needle part (i.e., the indwelling needle connector). Since the connector part (i.e., the indwelling needle connector) itself has no fixing measures, it only relies on the connection between the catheter and the needle to maintain the relative position. When the patient is active (such as turning over, walking, etc.), the connector part is easily shaken by external force, causing the needle to loosen or even fall off completely, making it impossible to continue infusion or blood collection, and may even cause serious consequences such as vascular damage and infection.

[0034] In response to the above problems, an embodiment of the present application provides an indwelling needle connector fixing patch, which can form a detachable fixing structure for the indwelling needle connector, effectively reducing the loosening of the indwelling needle needle tip due to the shaking of the indwelling needle connector, improving the stability of the indwelling needle during use, and at the same time utilizing a detachable fixing method to improve the convenience of using the indwelling needle connector.

[0035] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0036] Figure 1 is a schematic structural diagram of an indwelling needle connector fixing patch shown in an embodiment of the present application; Figure 2It is another structural schematic diagram of the indwelling needle connector fixing patch shown in the embodiment of the present application.

[0037] See also Figure 1 and Figure 2 The indwelling needle connector fixing patch 100 includes an adhesive layer 110 , a supporting layer 120 , at least one set of fixing belts 130 and a fixing ring 140 .

[0038] The adhesive layer 110 is mainly used for sticking to the human body surface. That is, the indwelling needle connector fixing patch 100 realizes the sticking function through the adhesive layer 110, thereby realizing that the indwelling needle connector fixing patch 100 can be directly stuck to the human body surface. In some embodiments, the adhesive layer 110 can be a hydrocolloid dressing or a transparent film dressing. It can be understood that the adhesive layer 110 can be any one of a hydrocolloid dressing and a transparent film dressing, so that the adhesive layer 110 can have an adhesive effect and skin-friendly properties.

[0039] The supporting layer 120 is arranged on one side of the adhesive layer 110, wherein the supporting layer 120 is used to support the indwelling needle connector. It can be understood that the supporting layer 120 can be arranged on the non-adhesive surface of the adhesive layer 110, and when the indwelling needle connector is fixed to the indwelling needle connector fixing patch, the indwelling needle connector is located on the supporting layer 120. In some embodiments, the supporting layer 120 can be made of silicone material. In this way, the silicone material has softness, which can improve the bonding degree of the supporting layer 120 to the indwelling needle connector, improve the fixing effect of the indwelling needle connector on the supporting layer 120, and effectively reduce the pressure on the human body when the indwelling needle connector is fixed on the indwelling needle connector fixing patch, thereby improving the comfort of the patient. In some embodiments, a plurality of air holes are provided on the adhesive layer 110, wherein a plurality of air holes are arranged around the adhesive layer 110, and the air holes are used to further improve the comfort of the patient when using the indwelling needle connector fixing patch 100.

[0040] At least one group of fixing belts 130 and fixing rings 140 are arranged on the surface of the supporting layer 120. The same group of fixing belts 130 and fixing rings 140 are distributed along the same straight line. That is to say, the fixing belts 130 can be in one-to-one correspondence with the fixing rings 140. The fixing belt 130 has a fixed end 131 and a limiting end 132, wherein the fixed end 131 is fixedly connected to the supporting layer 120, and the limiting end 132 is configured to be detachable and pass through the fixing ring 140, wherein when the limiting end 132 passes through the fixing ring 140, a fixed space for fixing the indwelling needle connector can be formed between the fixing belt 130 and the supporting layer 120. That is to say, when the indwelling needle connector is fixed on the indwelling needle connector fixing sticker 100, the indwelling needle connector is at least partially fixed in the fixed space.

[0041] In order to facilitate understanding of the technical solution of the present application, the following is a detailed description of the method of using the indwelling needle connector fixing patch 100 of the present application:

[0042] Figure 3 It is a schematic diagram of the use of the indwelling needle connector fixing patch shown in the embodiment of the present application.

[0043] For reference Figure 3 When the indwelling needle needle part is in use, that is, after the human body puncture is completed, a medical dressing 200 is usually used in the corresponding indwelling needle needle area to fix and protect the indwelling needle needle. The indwelling needle connector fixing patch 100 of the technical solution of the present application can be pasted to one side of the medical dressing when in use. For example, when the indwelling needle needle is applied to the back of the human hand, the indwelling needle connector fixing patch 100 of the present application can be pasted on the back of the human forearm. The indwelling needle connector fixing patch 100 can be removed by tearing it off from the surface of the human body.

[0044] When fixing the needle head of the indwelling needle, first ensure that the fixing belt and the fixing ring are in an open state, that is, the limiting end 132 of the fixing belt does not pass through the fixing ring 140, and place the indwelling needle connector on the supporting layer and between at least one group of fixing belts and the fixing ring, and then the limiting end 132 of the corresponding fixing belt passes through the fixing ring 140, so that the indwelling needle connector is at least partially fixed in the fixed space formed between the fixing belt 130 and the supporting layer 120, thereby achieving fixation of the indwelling needle connector; when the needle head of the indwelling needle is released, the limiting end of the corresponding fixing belt is pulled out from the fixing ring, thereby achieving release of the fixation of the needle head of the indwelling needle.

[0045] In some embodiments, the longitudinal projection area of ​​the supporting layer 120 on the adhesive layer 110 is smaller than the transverse cross-sectional area of ​​the adhesive layer 110. In other words, the transverse cross-sectional area of ​​the adhesive layer 110 is larger than the transverse cross-sectional area of ​​the supporting layer 120, for example, the transverse cross-sectional area of ​​the adhesive layer 110 is 1.5 times the transverse cross-sectional area of ​​the supporting layer 120, so that the adhesive layer 110 can repeatedly cover the supporting layer 120, thereby improving the adhesive effect of the indwelling needle connector fixing patch of the present application.

[0046] In some embodiments, one end of the supporting layer 120 is flush with the end surface of the adhesive layer 110. Specifically, the indwelling needle connector fixing patch of the present application can be rectangular, that is, the supporting layer 120 and the adhesive layer 110 can be flush on one side, so that the effect of the adhesive layer 110 on the indwelling needle connector during use is effectively reduced, such as preventing the adhesive layer 110 from sticking to the indwelling needle connector. In some specific embodiments, the adhesive layer 110 can wrap the supporting layer 120 and be flush on one end, so that the adhesive effect of the indwelling needle connector fixing patch can be guaranteed, while reducing the effect of the adhesive layer 110 on the indwelling needle connector during use.

[0047] In other embodiments, the supporting layer 120 is provided with a pressure-proof protrusion 121 extending in a direction away from the adhesive layer 110, and the pressure-proof protrusion 121 is located at the end of the supporting layer 120 that is flush with the end surface of the adhesive layer 110. It can be understood that the end of the supporting layer 120 that is flush with the end surface of the adhesive layer 110 can correspond to the head of the indwelling needle connector (i.e., the end of the indwelling needle connector used to connect to an external infusion set or other equipment), that is, when the indwelling needle connector is fixed to the indwelling needle connector fixed sticker, the head of the indwelling needle connector is placed toward the end of the supporting layer 120 that is flush with the end surface of the adhesive layer 110, and the pressure-proof protrusion 121 can further effectively isolate the indwelling needle connector from direct contact with the human body, thereby effectively preventing the indwelling needle connector from compressing the human body for a long time and causing pressure sores, and further ensuring the comfort of the patient.

[0048] In some embodiments, a smooth layer 133 is provided on the inner side of the fixing belt 130. The smooth layer 133 is mainly used to reduce the friction on the indwelling needle connector, so that the indwelling needle connector can move in a certain space. It can be understood that during the use of the indwelling needle, the patient may inevitably need to move. If the indwelling needle connector cannot move in a certain space, the infusion tube connected to the indwelling needle connector is easy to be folded, which affects the infusion effect. When the indwelling needle connector is fixed, the fixing belt 130 abuts against the surface of the indwelling needle connector through the smooth layer 133, so that the indwelling needle connector can be deflected within a certain range, forming a certain buffer space. When the patient moves, the buffer space is used to make the indwelling needle connector slightly deflected as the infusion tube shakes, thereby effectively improving the safety during infusion. It should be noted that the indwelling needle connector can only be slightly deflected to the left and right, and cannot be pulled out from between the fixing belt 130 and the supporting layer 120. In some specific embodiments, the contact area between the smooth layer 133 and the indwelling needle connector may be slightly smaller than the projection area of ​​the indwelling needle connector on the fixing belt 130 .

[0049] In some embodiments, the indwelling needle connector fixing patch may include: two sets of fixing belts 130 and fixing rings 140, and the two sets of fixing belts 130 and fixing rings 140 are arranged and distributed along the placement direction of the indwelling needle connector. Specifically, the two sets of fixing belts 130 and fixing rings 140 can be used to fix the head and tail of the indwelling needle connector, respectively, so that the fixing effect of the indwelling needle connector can be effectively improved, and the indwelling needle connector can be further prevented from shaking and causing the indwelling needle needle head to fall off. Among them, the smooth layer 133 can only be provided with the fixing belt 130 for fixing the head of the indwelling needle connector, so that the indwelling needle connector can be further prevented from being pulled out from between the fixing belt 130 and the supporting layer 120, thereby ensuring the fixing effect of the indwelling needle connector fixing patch of the present application on the indwelling needle connector.

[0050] In some embodiments, the indwelling needle connector fixing patch may also include: a limiting block 150 disposed on the surface of the supporting layer 120. Specifically, the limiting block 150 is located on the same side of at least one set of fixing belts 130 and fixing rings 140, and the limiting block 150 is mainly used to limit and fix the bottom of the indwelling needle connector. In this way, the limiting block 150 can be used to achieve rapid positioning of the indwelling needle connector when it is fixed on the supporting layer 120, thereby improving the convenience of using the indwelling needle connector fixing patch of the present application, and further improving the fixing effect of the indwelling needle connector. In some specific embodiments, the limiting block 150 is provided with a limiting side wall 151 for abutting against the bottom of the indwelling needle connector, wherein the limiting side wall 151 is in the shape of a trumpet. Specifically, the limiting side wall 151 is along the placement direction of the indwelling needle connector, and the caliber of the limiting side wall 151 gradually increases from the bottom of the indwelling needle connector toward the head. By using the above-mentioned limiting side wall 151 to abut the bottom of the indwelling needle connector, different specifications of indwelling needle connectors can be adapted, thereby meeting the fixing requirements of the indwelling needle connector fixing patch of the present application for indwelling needle connectors of different specifications. In some specific embodiments, the limiting block 150 can be composed of two sub-blocks distributed axially symmetrically. The two sub-blocks are mutually provided with side walls for abutting the indwelling needle connector, and the side walls of the two sub-blocks form the limiting side wall 151.

[0051] Figure 4 It is another structural schematic diagram of the indwelling needle connector fixing patch shown in the embodiment of the present application.

[0052] See also Figure 4 In some embodiments, the indwelling needle connector fixing patch may further include: a reinforcement layer 160 disposed on the adhesive layer 110. The reinforcement layer 160 is disposed around the supporting layer 120, and a limiting space 170 is formed between the reinforcement layer 160 and the adhesive layer 110. A limiting convex edge 122 is disposed at the edge of the supporting layer 120, and the limiting convex edge 122 is disposed in the limiting space 170. The limiting effect of the limiting space 170 on the limiting convex edge 122 is utilized to reinforce the supporting layer 120, enhance the fixing effect of the supporting layer 120 on the indwelling needle connector fixing patch, and thereby improve the reliability of the overall structure of the indwelling needle connector fixing patch. In some specific embodiments, the reinforcement layer 160 and the adhesive layer 110 are an integrally formed structure. Specifically, the reinforcement layer 160 and the adhesive layer 110 can be dressings of the same material.

[0053] In this embodiment, the technical solution of the present application can be directly adhered to the human body surface through the adhesive layer, and a detachable fixing structure is formed by using at least one set of fixing belts and a fixing ring on the supporting layer to realize detachable fixation of the indwelling needle connector, thereby effectively reducing the loosening of the indwelling needle needle due to the shaking of the indwelling needle connector, and improving the stability of the indwelling needle during use. At the same time, by using the detachable fixing method, when infusion or blood collection operations are required, the indwelling needle connector can be released to make it more convenient to use.

[0054] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0055] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A fixing patch for an indwelling needle connector, characterized in that: include: An adhesive layer (110) for adhering to the surface of a human body; a supporting layer (120) disposed on one side of the adhesive layer (110), the supporting layer (120) being used to support an indwelling needle connector; and At least one group of fixing belts (130) and fixing rings (140) are arranged on the surface of the supporting layer (120); the same group of fixing belts (130) and fixing rings (140) are distributed along the same straight line; wherein the fixing belt (130) has a fixing end (131) and a limiting end (132), the fixing end (131) is fixedly connected to the supporting layer (120), and the limiting end (132) is configured to be detachable and pass through the fixing ring (140), so that a fixed space for fixing the indwelling needle connector is formed between the fixing belt (130) and the supporting layer (120).

2. The indwelling needle connector fixing patch according to claim 1, characterized in that: The longitudinal projection area of ​​the supporting layer (120) on the adhesive layer (110) is smaller than the transverse cross-sectional area of ​​the adhesive layer (110).

3. The indwelling needle connector fixing patch according to claim 1, characterized in that: The supporting layer (120) is made of silica gel.

4. The indwelling needle connector fixing patch according to claim 1, characterized in that: One end of the supporting layer (120) is flush with the end surface of the adhesive layer (110).

5. The indwelling needle connector fixing patch according to claim 4, characterized in that: The supporting layer (120) is provided with a pressure-proof protrusion (121) extending in a direction away from the adhesive layer (110), and the pressure-proof protrusion (121) is located at an end of the supporting layer (120) that is flush with the end surface of the adhesive layer (110).

6. The indwelling needle connector fixing patch according to claim 1, characterized in that: The inner side surface of the fixing belt (130) is provided with a smooth layer (133).

7. The indwelling needle connector fixing patch according to any one of claims 1 to 6, characterized in that: The indwelling needle connector fixing patch comprises two sets of fixing belts (130) and fixing rings (140), and the two sets of fixing belts (130) and fixing rings (140) are arranged and distributed along the placement direction of the indwelling needle connector.

8. The indwelling needle connector fixing patch according to any one of claims 1 to 6, characterized in that: The indwelling needle connector fixing patch further comprises: a limit stopper (150) arranged on the surface of the supporting layer (120), the limit stopper (150) being used to limit and fix the bottom of the indwelling needle connector; the limit stopper (150) is located on the same side of at least one group of the fixing belt (130) and the fixing ring (140).

9. The indwelling needle connector fixing patch according to claim 8, characterized in that: The limiting block (150) is provided with a limiting side wall (151) for abutting against the bottom of the indwelling needle connector, and the limiting side wall (151) is in a trumpet shape.

10. The indwelling needle connector fixing patch according to claim 1, characterized in that: The indwelling needle connector fixing patch also includes: a reinforcement layer (160) arranged on the adhesive layer (110), and the reinforcement layer (160) is arranged around the supporting layer (120); a limiting space (170) is formed between the reinforcement layer (160) and the adhesive layer (110), and a limiting convex edge (122) is arranged on the edge of the supporting layer (120), and the limiting convex edge (122) is arranged in the limiting space (170).

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