Remaining needle pasting film

Abstract

The utility model relates to the field of medical instruments, in particular to an indwelling needle pasting film which comprises a packaging film, a communicating empty groove and a limiting hole are formed in the packaging film, multiple layers of film assemblies are sequentially arranged on the inner wall of the empty groove, a limiting pad is arranged on the inner wall of the limiting hole, and the limiting pad is provided with an inlet and a placement interval. The width of the inlet is limited to the maximum width of the placement interval, the limiting pad is made of an elastic material, an adhesive film is arranged on the back face of the packaging film, a water absorption film is arranged on the back face of the packaging film and located outside the adhesive film, and tearable films are arranged on the surfaces of the water absorption film and the adhesive film; liquid such as sweat, seepage and water stains on the edge of the packaging film is adsorbed in advance through the water absorption film, the liquid is prevented from making contact with the adhesive film, then the fixing firmness degree of the adhesive film is guaranteed, meanwhile, the weight of the water absorption film is increased after water absorption, and the packaging film can be better attached to the skin of a patient when the patient lies in a sickbed.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an indwelling needle patch. Background Technology

[0002] The use of indwelling needles can reduce the pain and fear of injections caused by repeated venipunctures in children, alleviate the anxiety of parents, facilitate clinical medication administration, and reduce the workload of nurses and children. Therefore, indwelling needles are widely used in clinical practice. With the advancement of technology, indwelling needle patches have emerged. Indwelling needle patches have the functions of effectively reducing the risk of infection, fixing the indwelling needle, protecting the puncture site, and improving patient comfort. In clinical practice, ordinary transparent patches are often used. The patch is placed on the indwelling needle and then fixed with adhesive tape.

[0003] Clinical use has revealed that when patients sweat, exude fluid, or come into contact with water, the liquid easily seeps into the adhesive layer along the edge of the film, causing the adhesive to hydrolyze and fail, resulting in a significant decrease in edge adhesion. At the same time, the lifting of the edge creates capillary action, accelerating the diffusion of liquid towards the center, which directly affects the strength of the adhesion. Utility Model Content

[0004] This application provides an indwelling needle patch to address the technical problem that the inventors have discovered in clinical use that when patients sweat, exude fluid, or come into contact with water, the liquid easily seeps into the adhesive layer along the edge of the patch, causing the adhesive to hydrolyze and fail, resulting in a significant decrease in edge adhesion. At the same time, when the edge lifts up, it generates capillary action, which accelerates the diffusion of liquid towards the center, directly affecting the degree of adhesive strength.

[0005] This application provides an indwelling needle patch, including an encapsulation film. The encapsulation film has a communicating groove and a limiting hole inside. A multilayer film assembly is sequentially arranged on the inner wall of the groove. A limiting pad is arranged on the inner wall of the limiting hole. The limiting pad has an inlet and a placement area. The width of the inlet is limited to the maximum width of the placement area. The limiting pad is made of an elastic material. An adhesive film is arranged on the back of the encapsulation film. An absorbent film is arranged on the back of the encapsulation film and outside the adhesive film. A tearable film is arranged on the surface of both the absorbent film and the adhesive film.

[0006] In any of the above technical solutions, the multilayer film assembly further includes a skin contact layer, a drug sustained-release layer, a stress buffer layer, and a surface protective layer, wherein the skin contact layer, the drug sustained-release layer, the stress buffer layer, and the surface protective layer are sequentially disposed from the back side of the encapsulation film to the front side of the encapsulation film.

[0007] In any of the above technical solutions, further, the skin contact layer, the drug sustained-release layer, the stress buffer layer and the surface protective layer are all provided with ventilating holes.

[0008] In any of the above technical solutions, the inner diameter of the pores in the skin contact layer, the drug sustained-release layer, the stress buffer layer, and the surface protective layer gradually decreases.

[0009] In any of the above technical solutions, the front side of the tearable film abuts against the skin contact layer.

[0010] In any of the above technical solutions, the tearable film does not obstruct the inlet.

[0011] In any of the above technical solutions, the stress buffer layer further adopts a honeycomb structure.

[0012] In any of the above technical solutions, the material of the skin contact layer is either medical silicone or hydrocolloid.

[0013] In any of the above technical solutions, the material of the drug sustained-release layer is either agarose or polyacrylamide.

[0014] In any of the above technical solutions, the absorbent membrane is further made of polypropylene.

[0015] The main benefits of this application are:

[0016] By pre-absorbing sweat, seepage, and water stains from the edges of the sealing film using an absorbent membrane, the liquid is prevented from contacting the adhesive film, thus ensuring the adhesive film's firmness. At the same time, the absorbent membrane increases in weight after absorbing water, allowing the sealing film to fit the patient's skin more closely when the patient is lying in bed.

[0017] It should be understood that the foregoing general description and the following detailed description are for illustrative purposes only and do not necessarily limit the scope of this application. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this application. Furthermore, the specification and drawings serve to explain the principles of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram (front view) of the film-applying structure according to an embodiment of this application.

[0020] Figure 2This is a schematic diagram of the film-applied structure according to an embodiment of this application. Figure 1 (Rear view);

[0021] Figure 3 This is a schematic diagram of the film-attached structure in an embodiment of this application. Figure 2 (Rear view);

[0022] Figure 4 This is a schematic diagram (bottom view) of the encapsulation film and its connection structure in an embodiment of this application.

[0023] Figure 5 This is a schematic diagram (side sectional view) of the film-attached structure in an embodiment of this application.

[0024] icon:

[0025] 100-Encapsulation film; 101-Limiting hole; 102-Limiting pad; 103-Adhesive film; 104-Absorbent film; 105-Tearable film; 106-Skin contact layer; 107-Drug sustained-release layer; 108-Stress buffer layer; 109-Surface protective layer. Detailed Implementation

[0026] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0027] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In one or more embodiments, an indwelling needle patch is provided, including a sealing film 100. The sealing film 100 has a communicating groove and a limiting hole 101 inside. A multilayer film assembly is sequentially arranged on the inner wall of the groove. A limiting pad 102 is arranged on the inner wall of the limiting hole 101. The limiting pad 102 has an inlet and a placement area. The width of the inlet is limited to the maximum width of the placement area. The limiting pad 102 is made of elastic material. An adhesive film 103 is arranged on the back of the sealing film 100. An absorbent film 104 is arranged on the back of the sealing film 100 and outside the adhesive film 103. A tearable film 105 is arranged on the surface of both the absorbent film 104 and the adhesive film 103. The front of the tearable film 105 abuts against the skin contact layer 106. The tearable film 105 does not block the inlet.

[0031] In this embodiment, the absorbent membrane 104 pre-absorbs sweat, exudate, and water stains from the edge of the sealing membrane 100, preventing the liquid from contacting the adhesive membrane 103 and ensuring the firmness of the adhesive membrane 103. Simultaneously, the absorbent membrane 104 increases in weight after absorbing water, allowing the sealing membrane 100 to fit more closely to the patient's skin when lying on the bed. The indwelling needle tube can be located within the limiting pad 102 in the empty slot. The limiting pad 102's rebound action secures the needle tube, preventing misalignment. The inlet size is much smaller than the needle tube's inner diameter. After the needle tube passes through the inlet into the placement area, the limiting pad 102 at the inlet secures the needle tube under its rebound force, ensuring its fixed position. The inner diameter of the placement area is slightly smaller than the needle tube's inner diameter, ensuring the needle tube is fixed under the elastic action of the limiting pad 102. The limiting pad 102 may have an anti-slip coating to increase the friction between the limiting pad 102 and the needle tube.

[0032] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the multilayer membrane assembly includes a skin contact layer 106, a drug sustained-release layer 107, a stress buffer layer 108, and a surface protective layer 109, which are sequentially disposed from the back side of the encapsulation film 100 to the front side of the encapsulation film 100.

[0033] In this embodiment, the skin contact layer 106 can come into contact with the patient's skin to achieve a gentle adhesion effect; the drug sustained-release layer 107 contains a drug that achieves local anticoagulation through drug release; the stress buffer layer 108 is used to achieve the effect of external protection and shock absorption to reduce the impact of external factors on the indwelling needle; and the surface protective layer 109 can achieve waterproofing and reduce reflection based on its own properties.

[0034] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the skin contact layer 106, the drug sustained-release layer 107, the stress buffer layer 108, and the surface protective layer 109 are all provided with vents, and the inner diameter of the vents in the skin contact layer 106, the drug sustained-release layer 107, the stress buffer layer 108, and the surface protective layer 109 gradually decreases.

[0035] In this embodiment, the opening of the vent holes ensures the ventilation effect of the indwelling needle position to avoid the occurrence of stuffiness and sweating. The gradient opening of the vent hole size can achieve the antibacterial effect. The vent hole of the skin contact layer 106 has the smallest size, that is, 50μm, and the vent hole of the surface protective layer 109 has the largest size, that is, 5μm.

[0036] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the stress buffer layer 108 adopts a honeycomb structure, the skin contact layer 106 is made of either medical silicone or hydrocolloid, the drug sustained-release layer 107 is made of either agarose or polyacrylamide, and the absorbent membrane 104 is made of polypropylene.

[0037] In this embodiment, the honeycomb structure stress buffer layer 108 exhibits an ideal three-stage characteristic in its compressive stress-strain curve: initial linear elastic region – plateau region – densification region. Dynamic impact absorption: it can disperse more than 90% of shear force impact. The materials of the skin contact layer 106, drug sustained-release layer 107, stress buffer layer 108, and surface protective layer 109 include, but are not limited to, the materials described above.

[0038] Specifically, the working principle of the indwelling needle dressing provided in this application is as follows:

[0039] The needle tube of the indwelling needle can be located in the limiting pad 102 of the empty slot. The needle tube is fixed by the rebound action of the limiting pad 102 to prevent the indwelling needle from being misaligned. The size of the inlet is much smaller than the inner diameter of the needle tube. After the needle tube passes through the inlet and enters the placement area, the limiting pad 102 at the inlet fixes the needle tube under the action of the rebound force.

[0040] By pre-absorbing sweat, seepage, and water stains from the edge of the sealing film 100 through the absorbent membrane 104, the liquid is prevented from contacting the adhesive film 103, thereby ensuring the firmness of the adhesive film 103. At the same time, the absorbent membrane 104 increases in weight after absorbing water, so that the sealing film 100 can fit more closely to the patient's skin when the patient is lying in bed.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A type of indwelling needle dressing, characterized in that, The device includes an encapsulation film, which has a communicating groove and a limiting hole inside. The inner wall of the groove is provided with a multilayer film assembly. The inner wall of the limiting hole is provided with a limiting pad. The limiting pad has an inlet and a placement area. The width of the inlet is limited to the maximum width of the placement area. The limiting pad is made of an elastic material. An adhesive film is provided on the back of the encapsulation film. An absorbent film is provided on the back of the encapsulation film and outside the adhesive film. Both the absorbent film and the adhesive film have a tear-away film on their surfaces.

2. The indwelling needle dressing according to claim 1, characterized in that, The multilayer membrane assembly includes a skin contact layer, a drug sustained-release layer, a stress buffer layer, and a surface protection layer, wherein the skin contact layer, the drug sustained-release layer, the stress buffer layer, and the surface protection layer are sequentially arranged from the back side of the encapsulation film to the front side of the encapsulation film.

3. The indwelling needle dressing according to claim 2, characterized in that, The skin contact layer, the drug sustained-release layer, the stress buffer layer, and the surface protective layer all have ventilated holes inside.

4. The indwelling needle dressing according to claim 3, characterized in that, The inner diameter of the pores in the skin contact layer, the drug sustained-release layer, the stress buffer layer, and the surface protective layer gradually decreases.

5. The indwelling needle dressing according to claim 2, characterized in that, The front side of the tearable film abuts against the skin contact layer.

6. The indwelling needle dressing according to claim 2, characterized in that, The tearable film does not cover the inlet.

7. The indwelling needle dressing according to claim 2, characterized in that, The stress buffer layer adopts a honeycomb structure.

8. The indwelling needle dressing according to claim 2, characterized in that, The material of the skin contact layer can be either medical-grade silicone or hydrocolloid.

9. A dressing for indwelling needles according to claim 2, characterized in that, The drug sustained-release layer is made of either agarose or polyacrylamide.

10. A dressing for an indwelling needle according to claim 2, characterized in that, The absorbent membrane is made of polypropylene.

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