Injection molding apparatus for microneedle production

Abstract

The utility model discloses an injection molding device for micro needle preparation relates to micro needle preparation technical field, including injection tank and flexible base, the inside bottom end of injection tank places the flexible base, and the middle of flexible base places the mould main part, the upper end opening of injection tank is provided with the sealing plate component, and the top of injection tank is installed with the movable lid, the top surface of sealing plate component is installed with rubber plug. This injection molding device for micro needle preparation, through setting up sealing plate component at the top opening of injection tank, can be used for connecting combination rubber plug and air release valve, so as to facilitate the subsequent micro needle preparation, can also cooperate the structure setting of movable lid, make the inside of injection tank keep enough structural sealing, to this end ensure the preparation processing of micro needle, adopt detachable modularization setting between each structure, both reduce the manufacturing cost of device, also convenient for structure use, also convenient for the structure maintenance processing of device.

Description

Technical Field

[0001] This utility model relates to the field of microneedle preparation technology, specifically to an injection molding device for microneedle preparation. Background Technology

[0002] Microneedles are medical devices used for skin drug delivery, which can deliver drugs or other active ingredients to the deeper layers of the skin, thereby improving treatment effectiveness.

[0003] Microneedle molds are key tools in the fabrication of microneedles, typically made of metal or plastic, and have specific shapes and dimensions. Designing and manufacturing microneedle molds requires specialized design software and manufacturing equipment.

[0004] Microneedles are typically made of biocompatible, non-toxic, and non-irritating materials, such as stainless steel, titanium alloys, and polymers. Choosing the right material requires considering factors such as the intended use of the microneedle, the environment in which it will be used, and human safety.

[0005] Conventional injection molding equipment has a relatively complex structure, which makes the overall cost of the equipment high. At the same time, its use is relatively unchanging, and its maintenance is also time-consuming and labor-intensive.

[0006] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed an injection molding device for microneedle preparation. Utility Model Content

[0007] The purpose of this invention is to provide an injection molding device for microneedle fabrication to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an injection molding device for microneedle preparation, comprising an injection tank and a flexible base, wherein the flexible base is placed at the bottom of the injection tank and a mold body is placed in the middle of the flexible base, a sealing plate component is provided at the upper opening of the injection tank, and a movable cover is installed on the top of the injection tank, a rubber stopper is installed on the top surface of the sealing plate component, and two sets of venting valves are also installed on the top surface of the sealing plate component.

[0009] Furthermore, the injection tank includes a tank body, a support base, and a sealing groove. The support base is provided on the inner wall surface of the upper opening of the tank body, and a sealing groove is provided on the top surface of the support base.

[0010] Furthermore, the tank body and the support base are integrated into a single structure, and the tank body is made of a transparent material.

[0011] Furthermore, the sealing plate component includes a sealing plate body, a connecting seat, a limiting groove, a first sealing ring, and a second sealing ring. The top surface of the sealing plate body is provided with a connecting seat, and the edge of the top surface of the sealing plate body is provided with a limiting groove. The edge of the sealing plate body is provided with a first sealing ring, and the bottom surface edge of the sealing plate body is provided with a second sealing ring.

[0012] Furthermore, the connecting seats are distributed on the top surface of the sealing plate body and there are four sets, and the connecting seats and the sealing plate body are integrated into one structure.

[0013] Furthermore, both the first and second sealing rings are embedded in the surface of the sealing plate body, and the inner surface structure of the sealing groove matches the outer surface structure of the second sealing ring.

[0014] Furthermore, the movable cover includes a top cover, a through-hole, and a limiting gasket. The top of the top cover has a through-hole, and the bottom surface of the through-hole is embedded with a limiting gasket. Moreover, the inner surface structure of the limiting groove matches the bottom outer surface structure of the limiting gasket. The top cover and the tank are connected by threads.

[0015] Furthermore, the rubber plug is fitted onto the top of one set of connecting seats, and the vent valve is fitted onto the top of the other two sets of connecting seats respectively.

[0016] This invention provides an injection molding device for microneedle fabrication, which has the following advantages:

[0017] 1. This utility model features a first sealing ring embedded in the side of the sealing plate body and a second sealing ring embedded in the bottom edge surface of the sealing plate body. Combined with a sealing groove on the top surface of the support base, when the entire sealing plate component is placed at the top opening of the tank, the first sealing ring rests between the side of the sealing plate body and the upper inner wall surface of the tank, while the second sealing ring is inserted into the sealing groove. Simultaneously, the top cover is screwed onto the top of the tank, and as it is screwed, the limiting gasket is vertically pressed against the limiting groove, thus achieving a tight connection between the injection tank, the sealing plate component, and the movable cover. This structure offers several advantages: firstly, it features a simple design that is convenient to use; secondly, it ensures the stability and sealing of the connection between the device structures, preventing unnecessary pressure disturbances inside the injection tank during microneedle preparation, thereby maximizing the effectiveness of microneedle preparation.

[0018] 2. This utility model features four sets of connecting seats on the top of the sealing plate body. One set of connecting seats is used for the fitting and installation of the rubber stopper, the other two sets are used for the structural installation of the venting valve, and the fourth connecting seat facilitates the insertion of a temperature sensor for real-time measurement of the temperature inside the injection tank. This ensures the effectiveness of microneedle preparation and allows for real-time adjustment of the temperature inside the injection tank using external equipment. It also facilitates structural connection with an external vacuum pump and pressure recovery inside the injection tank, ensuring the ease of use of the device structure. Furthermore, the modular design of the injection tank, flexible base, mold body, sealing plate component, movable cover, rubber stopper, and venting valve allows for effective control of the manufacturing cost of each structural component, reducing the cost of using the device. On the other hand, the simple structural design facilitates the combination and use of the components and also facilitates the structural maintenance of the device, ensuring its flexibility and practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the axial side view of the body structure of an injection molding device for microneedle fabrication according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the injection tank of an injection molding device for microneedle fabrication according to the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of a sealing plate component of an injection molding device for microneedle fabrication according to the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the movable cap of an injection molding device for microneedle fabrication according to the present invention.

[0023] In the diagram: 1. Injection tank; 101. Tank body; 102. Support base; 103. Sealing groove; 2. Flexible base; 3. Mold body; 4. Sealing plate component; 401. Sealing plate body; 402. Connecting seat; 403. Limiting groove; 404. First sealing ring; 405. Second sealing ring; 5. Movable cover; 501. Top cover; 502. Through port; 503. Limiting gasket; 6. Rubber plug; 7. Venting valve. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] like Figures 1 to 4As shown, an injection molding device for microneedle fabrication includes an injection tank 1 and a flexible base 2. The flexible base 2 is placed at the bottom of the injection tank 1, and a mold body 3 is placed in the middle of the flexible base 2. A sealing plate component 4 is provided at the upper opening of the injection tank 1, and a movable cover 5 is installed on the top of the injection tank 1. A rubber stopper 6 is installed on the top surface of the sealing plate component 4, and two sets of venting valves 7 are also installed on the top surface of the sealing plate component 4. The sealing plate component 4 includes a sealing plate body 401, a connecting seat 402, a limiting groove 403, a first sealing ring 404, and a second sealing ring 405. The connecting seat 402 is provided on the top surface of the sealing plate body 401, and the limiting groove 403 is formed on the edge of the top surface of the sealing plate body 401. The first sealing ring 404 is installed on the edge of the sealing plate body 401, and the second sealing ring 405 is installed on the bottom edge of the sealing plate body 401. The connecting seats 402 are distributed on the top surface of the sealing plate body 401 and four sets are provided. The connecting seats 402 and the sealing plate body 401 are integrated. The first sealing ring 404 and the second sealing ring 405 are both embedded and installed on the surface of the sealing plate body 401. The inner surface structure of the sealing groove 103 matches the outer surface structure of the second sealing ring 405. When the entire sealing plate component 4 is placed at the top opening of the tank 101, the first sealing ring 404 is pressed against the side of the sealing plate body 401 and the upper inner wall surface of the tank 101. At the same time, the second sealing ring 405 is inserted into the inside of the sealing groove 103. Meanwhile, the top cover 501 is installed on the top of the tank 101 by screwing. As it is screwed, the limiting gasket 503 is vertically pressed against the inside of the limiting groove 403, thereby completing the tight connection between the liquid injection tank 1, the sealing plate component 4, and the movable cover 5.

[0026] like Figures 1 to 4As shown, the injection tank 1 includes a tank body 101, a support base 102, and a sealing groove 103. The support base 102 is provided on the inner wall surface of the upper opening of the tank body 101, and the sealing groove 103 is provided on the top surface of the support base 102. The tank body 101 and the support base 102 are integrally formed. The tank body 101 is made of transparent material. The movable cover 5 includes an upper cover 501, a through-hole 502, and a limiting gasket 503. The upper cover 501 has a through-hole 502 on its top, and the limiting gasket 503 is embedded in the bottom surface of the through-hole 502. The inner surface structure of the limiting groove 403 is... The bottom outer surface structure of the limiting gasket 503 is matched with the structure of the upper cover 501 and the tank body 101. The rubber plug 6 is sleeved on the top of a set of connecting seats 402, and the vent valve 7 is sleeved on the top of the other two sets of connecting seats 402. By setting three sets of connecting seats 402 on the top of the sealing plate body 401, one set of connecting seats 402 is used for the sleeve installation of the rubber plug 6, and the other two sets of connecting seats 402 are used for the structural installation of the vent valve 7, so as to facilitate the structural connection with the external vacuum pump and the restoration of the gas pressure inside the liquid injection tank 1, and ensure the ease of use of the device structure.

[0027] In summary, as Figures 1 to 4 As shown, the injection molding device for microneedle preparation first uses the flexible base 2 to fix the mold body 3 inside the injection tank 1 and set it below the sealing plate component 4, ensuring that it is vertically opposite to a set of connecting seats 402 on the top of the sealing plate body 401.

[0028] Then, the sealing plate component 4 is placed as a whole at the top opening of the tank 101, and the second sealing ring 405 at the bottom of the sealing plate body 401 is embedded in the sealing groove 103 opened on the surface of the support seat 102, so that the first sealing ring 404 is tightly fitted between the sealing plate body 401 and the tank 101. During this process, the bottom opening of a set of connecting seats 402 is aligned with the position of the mold body 3.

[0029] Then, the movable cover 5 is fixed to the top of the injection tank 1 by screwing. During this process, the limiting gasket 503 at the bottom of the port 502 gradually enters the limiting groove 403 until the entire movable cover 5 is tightened, and the firmness of the connection between the injection tank 1, the sealing plate component 4, and the movable cover 5 is confirmed.

[0030] Then, the external vacuum pump is connected to the top of a set of vent valves 7 via a gas delivery hose. The vent valves 7 are then inserted into the top of a set of connectors 402. The other set of vent valves 7 is kept closed and installed on the top of another set of connectors 402. The rubber plug 6 is then installed on the top of the third set of connectors 402. Then, as needed, a temperature sensor is inserted into the fourth connector 402 with the rubber plug 6 having an opening in the middle to measure the temperature inside the injection tank in real time, so as to ensure the effectiveness of microneedle preparation.

[0031] At this time, turn on the vacuum pump to reduce the vacuum inside the injection tank 1 to below -0.05MPa. Then, insert the syringe with needle filled with microneedle liquid into the inside of the rubber stopper 6, and then inject the needle into the mold body 3. During this process, it is necessary to maintain the negative pressure inside the injection tank 1.

[0032] After the injection is completed, remove the syringe and turn off the vacuum pump. Then open a set of venting valves 7 to restore the pressure inside the injection tank 1 to normal pressure. At this time, the microneedle solution will be automatically drawn into the needle tip pit to complete the injection.

[0033] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An injection molding device for microneedle fabrication, comprising an injection tank (1) and a flexible base (2), characterized in that: A flexible base (2) is placed at the bottom of the injection tank (1), and a mold body (3) is placed in the middle of the flexible base (2). A sealing plate component (4) is provided at the upper opening of the injection tank (1), and a movable cover (5) is installed on the top of the injection tank (1). A rubber stopper (6) is installed on the top surface of the sealing plate component (4), and two sets of venting valves (7) are also installed on the top surface of the sealing plate component (4).

2. The injection molding apparatus for microneedle fabrication according to claim 1, characterized in that, The injection tank (1) includes a tank body (101), a support base (102) and a sealing groove (103). The support base (102) is provided on the inner wall surface of the upper opening of the tank body (101), and the sealing groove (103) is provided on the top surface of the support base (102).

3. The injection molding apparatus for microneedle fabrication according to claim 2, characterized in that, The tank (101) and the support base (102) are integrated into one structure, and the tank (101) is made of transparent material.

4. The injection molding apparatus for microneedle fabrication according to claim 2, characterized in that, The sealing plate component (4) includes a sealing plate body (401), a connecting seat (402), a limiting groove (403), a first sealing ring (404), and a second sealing ring (405). The top surface of the sealing plate body (401) is provided with a connecting seat (402), and the edge of the top surface of the sealing plate body (401) is provided with a limiting groove (403). The edge of the sealing plate body (401) is provided with a first sealing ring (404), and the edge of the bottom surface of the sealing plate body (401) is provided with a second sealing ring (405).

5. The injection molding apparatus for microneedle fabrication according to claim 4, characterized in that, The connecting seats (402) are distributed on the top surface of the sealing plate body (401) and there are four sets of them. The connecting seats (402) and the sealing plate body (401) are integrated into one structure.

6. The injection molding apparatus for microneedle fabrication according to claim 4, characterized in that, The first sealing ring (404) and the second sealing ring (405) are both installed on the surface of the sealing plate body (401) with an embedded structure, and the inner surface structure of the sealing groove (103) matches the outer surface structure of the second sealing ring (405).

7. The injection molding apparatus for microneedle fabrication according to claim 1, characterized in that, The movable cover (5) includes an upper cover (501), a through-hole (502), and a limiting gasket (503). The upper cover (501) has a through-hole (502) at the top, and the limiting gasket (503) is embedded in the bottom surface of the through-hole (502). The inner surface structure of the limiting groove (403) matches the bottom outer surface structure of the limiting gasket (503). The upper cover (501) and the tank body (101) are connected by threads.

8. The injection molding apparatus for microneedle fabrication according to claim 4, characterized in that, The rubber plug (6) is fitted onto the top of one set of connecting seats (402), and the vent valve (7) is fitted onto the top of the other two sets of connecting seats (402).

Images