Automatic puncturing device

Abstract

The utility model belongs to the technical field of medical instruments, and discloses an automatic puncture device. The automatic puncture device comprises a bandage and an injection mechanism, wherein the bandage is used for being bound to a human body; the injection mechanism is connected to the bandage, when the bandage is bound to the human body, the injection mechanism abuts against the human body, and the injection mechanism comprises a puncture needle head which is movably arranged; the pushing module is connected to the injection mechanism, can drive the puncture needle head to puncture into the human body, and can also push and press a liquid medicine bottle in the injection mechanism in the direction close to the puncture needle head. The automatic puncture device is fixed to the human body through the bandage, puncture and injection of the puncture needle head are conducted through the abutting and pushing module in the whole process, and therefore the stability of the puncture process is greatly improved; meanwhile, compared with manual puncture, the pushing module can ensure that the driving distance to the puncture needle head is the same every time, so that the puncture depth is stable and controllable, the treatment effect is further improved, and the discomfort of a patient is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, and relates to an automatic puncture device. BACKGROUND

[0002] In the medical field, after muscle injection DNA macromolecular medicine, reversible electroporation effect is reached by exerting electric pulse to assist medicine absorption, which is a current commonly used physical delivery mode, compared with other delivery modes, has the advantages such as simple operation, small side effect, high absorption conversion efficiency etc. Current when carrying out medicine injection, medical staff often holds injection instrument to puncture human skin, and the medicine in injection instrument is injected into muscle tissue, and the injection method needs medical staff to hold equipment to force to patients, there are problems such as unstable puncture process, injection depth does not meet the requirements, thereby the pain and discomfort of patients can be intensified.

[0003] Therefore, it is urgent to design a puncture device to solve the above problems existing in the prior art. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an automatic puncture device, which can improve the stability of needle puncture and realize the stable and controllable injection depth to reduce the discomfort of patients.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides an automatic puncture device, comprising:

[0007] Binding belt, the binding belt is used to bind to human body;

[0008] Injection mechanism, the injection mechanism is connected to the binding belt, when the binding belt is bound to the human body, the injection mechanism is abutted to the human body, and the injection mechanism includes the puncture needle head movably arranged;

[0009] Pushing module, the pushing module is connected to the injection mechanism, the pushing module can drive the puncture needle head to penetrate into the human body, and the pushing module can also push the medicine bottle in the injection mechanism along the direction close to the puncture needle head.

[0010] As preferably, the injection mechanism includes a mounting frame, the mounting frame has a loading cavity, the loading cavity is used to accommodate the medicine bottle, and the loading cavity is arranged opposite to the puncture needle head;

[0011] The pushing module comprises a first pushing assembly and a second pushing assembly, the first pushing assembly is capable of driving the puncture needle to move in a direction close to the human body through the mounting frame, and the second pushing assembly is capable of extending into the loading cavity and driving the movable rubber plug at the end of the medicine liquid bottle to move in a direction close to the puncture needle.

[0012] As preferably, the injection mechanism further comprises a push plate and a mounting seat, the mounting seat is used for abutting against the human body, the push plate is slidingly arranged on the mounting seat, the mounting frame abuts against the push plate, the puncture needle is fixedly arranged on the push plate, and the mounting frame is capable of driving the push plate to move in a direction close to the human body.

[0013] As preferably, a pressing end plate which is fitted with the surface of the human body is concavely arranged on the mounting seat, and a needle outlet hole is arranged on the pressing end plate and is opposite to the puncture needle.

[0014] As preferably, the mounting frame comprises a cylinder and an abutting block, the inside of the cylinder has the loading cavity, the abutting block is arranged on the outer wall surface of the cylinder, the cylinder abuts against the push plate, and the end of the puncture needle extends into the loading cavity.

[0015] The abutting block is opposite to the first pushing assembly, and the loading cavity is opposite to the second pushing assembly.

[0016] As preferably, the injection mechanism further comprises an elastic member, the elastic member is arranged between the push plate and the mounting seat, and the elastic member is configured to drive the push plate to move away from the human body.

[0017] As preferably, a guide groove is arranged on the mounting seat, and a clamping block is arranged on the push plate and is slidingly arranged in the guide groove.

[0018] As preferably, a clamping stopper is arranged on the mounting seat, and the mounting frame is capable of abutting against the clamping stopper under the driving of the elastic member.

[0019] As preferably, the automatic puncture device further comprises a shell, the injection mechanism and the pushing module are arranged in the shell, the bandage is arranged on the shell, and a passing opening for the puncture needle to pass through is arranged on the shell.

[0020] As preferably, the automatic puncture device further comprises a positioning cylinder, the positioning cylinder is used for sleeving the human body, and the injection mechanism is detachably connected to the positioning cylinder.

[0021] The automatic puncture device has the advantages that:

[0022] The automatic puncture device provided by the utility model, including bandage, injection mechanism and push module, the bandage is used for binding on human body, the injection mechanism can be fixed on human body firmly without manual fixing, and the patient can not feel pain caused by unstable injection mechanism during subsequent puncture; since the injection mechanism includes the puncture needle head arranged movably, the push module can drive the puncture needle head to pierce into human body, and the push module can also push the medicine bottle in the injection mechanism in the direction close to the puncture needle head, so that the pressure on the medicine bottle can be increased, the medicine in the medicine bottle can be injected into human body through the puncture needle head, and the whole process of needle puncture and injection can be completed automatically without manual operation, so that the medicine injection and electroporation operation on human body can be realized, time and labor are saved, and it is convenient and fast; after using the automatic puncture device, the fixed connection with human body and puncture can be realized without manual operation, so that the stability of the puncture process is greatly improved; compared with manual puncture, the push module can ensure that the driving distance of the puncture needle head is the same every time, so that the puncture depth is stable and controllable, the treatment effect is further improved, and the discomfort of the patient is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the first perspective view of the injection mechanism and the push module provided by the utility model specific embodiment;

[0024] Figure 2 It is the second perspective view of the injection mechanism and the push module provided by the utility model specific embodiment;

[0025] Figure 3 It is the structure schematic view of the automatic puncture device provided by the utility model specific embodiment;

[0026] Figure 4 It is the sectional view of the injection mechanism and the push module provided by the utility model specific embodiment;

[0027] Figure 5 It is the assembly schematic view of the automatic puncture device provided by the utility model specific embodiment.

[0028] In the drawing:

[0029] 1-bandage;

[0030] 2-injection mechanism; 21-puncture needle head; 22-mounting frame; 221-cylinder; 222-abutment block; 223-bottom plate; 23-pushing plate; 231-clamp block; 24-mounting seat; 241-pressing end plate; 242-guiding groove; 243-clamp stopper; 25-elastic member;

[0031] 3-push module; 31-first pushing rod; 32-second pushing rod;

[0032] 4-outer shell;

[0033] 5-positioning cylinder. DETAILED DESCRIPTION

[0034] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0035] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the embodiment, the terms "up", "down", "right", "left" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0038] As Figures 1 to 3The utility model provides an automatic puncture device, the automatic puncture device includes bandage 1, injection mechanism 2 and push module 3, bandage 1 is used to bind in human body, injection mechanism 2 is connected in bandage 1, when bandage 1 binds in human body, injection mechanism 2 leans to human body, injection mechanism 2 includes the puncture needle 21 of active setting, push module 3 is connected in injection mechanism 2, push module 3 can drive puncture needle 21 and stab into human body, push module 3 still can push and press the medicine liquid bottle in injection mechanism 2 along the direction close to puncture needle 21.

[0039] In this embodiment, the bandage 1 is used to bind in human body, without manual fixing injection mechanism 2, the injection mechanism 2 can be firmly fixed on the human body, preventing the patient from feeling pain due to the instability of the injection mechanism 2 during subsequent puncture. Because the injection mechanism 2 includes the puncture needle 21 set movably, the push module 3 can drive the puncture needle 21 to stab into the human body, and the push module 3 can also push the medicine liquid bottle in the injection mechanism 2 in the direction close to the puncture needle 21. Therefore, the pressure on the medicine liquid bottle can be increased, and the medicine liquid in the medicine liquid bottle can be injected into the human body through the puncture needle 21, thereby automatically completing the entire process of needle puncture and injection. Without manual operation, the drug injection and electroporation operation on the human body can be realized, which is time-saving, labor-saving, convenient and fast. After using the automatic puncture device, the fixed connection with the human body and puncture can be realized without manual operation throughout the process, thereby greatly improving the stability of the puncture process. Compared with manual puncture, the push module 3 can ensure that the driving distance of the puncture needle 21 is the same each time, thereby stabilizing and controlling the puncture depth, further improving the treatment effect and reducing the discomfort of the patient.

[0040] Specifically, the automatic puncture device is used for puncture and drug injection of human extremities. The bandage 1 is made of flexible material with certain elasticity. One end of the bandage 1 is fixedly arranged at one end of the injection mechanism 2, and the other end can be adhered to the other end of the injection mechanism 2 by magic tape. To use the automatic puncture device on the arm, the magic tape of the bandage 1 needs to be torn off from the injection mechanism 2, and the injection mechanism 2 is placed on the designated injection position on the arm. Then the bandage 1 is wrapped around the arm and adhered to the other end of the injection mechanism 2, thereby fixing the automatic puncture device on the arm. Because the bandage 1 has elasticity, it can be applied to arms with different arm circumferences and different positions on the same arm. In another embodiment, the bandage 1 has two, and the two bandages 1 are fixed at both ends of the injection mechanism 2. Magic tape is arranged on both bandages 1, and the two bandages 1 can be adhered to each other by magic tape. It can be understood that the bandage 1 can also be connected by other common structures in the art such as buttons or zippers, which will not be described here.

[0041] As Figure 1 and Figure 2As shown, the injection mechanism 2 comprises a mounting frame 22 having a loading cavity for accommodating a medicine bottle, the loading cavity being opposite to the puncture needle 21; the pushing module 3 comprises a first pushing assembly and a second pushing assembly, the first pushing assembly being capable of driving the puncture needle 21 to move in a direction close to the human body through the mounting frame 22, and the second pushing assembly being capable of extending into the loading cavity and driving the movable rubber plug at the end of the medicine bottle to move in a direction close to the puncture needle 21; specifically, the first pushing assembly and the second pushing assembly are independent electric push rod mechanisms, and the pushing module 3 has an electric control unit, after the pushing module 3 receives the starting instruction of the medical staff, the first pushing assembly starts and keeps moving to a set position, at this time the puncture needle 21 penetrates into the human body and reaches the specified injection depth, then the electric control unit controls the second pushing assembly to start and push the movable rubber plug at the end of the medicine bottle, so that the medicine is injected into the human body through the puncture needle 21; it can be understood that by changing the displacement of the first push rod 31 in the first pushing assembly, the injection depth of the puncture needle 21 can be changed, so that the injection depth of the automatic puncture device is steplessly adjustable, so as to better meet the injection requirements of different patients.

[0042] In this embodiment, the medicine bottle is a common card bottle in the art, the puncture needle 21 is provided with a plurality of puncture needles, including an injection needle opposite to the loading cavity and an electrode needle surrounding the periphery of the injection needle, the injection needle and the electrode needle can penetrate into the human body and reach the specified depth under the drive of the first pushing assembly; wherein the injection needle has a puncture tip at both ends, and the injection needle is through inside, the puncture tip of the injection needle can penetrate the fixed rubber plug at one end of the medicine bottle, when the second pushing assembly pushes the movable rubber plug at the other end of the medicine bottle to move, the medicine in the medicine bottle can be injected into the human body through the injection needle; the electrode needle can release an electric pulse to the human body to achieve the effect of reversible electroporation, thereby assisting the human body to transfer and absorb the medicine. It can be understood that the puncture needle 21 in the automatic puncture device can also be an electrode needle that only releases an electric pulse after puncturing, and can also be an injection needle that only injects after puncturing, and the specific needle type can be set according to the actual use requirement, which is not limited here.

[0043] The structure of the rest of the injection mechanism 2 can be set according to actual needs, as long as it can cooperate with the mounting frame 22 to realize the penetration of the puncture needle 21 and the injection of the medicine; for example, Figure 1 and Figure 4As shown, the injection mechanism 2 further comprises a push plate 23 and a mounting seat 24, the mounting seat 24 is used to abut against the human body, the push plate 23 is slidingly arranged on the mounting seat 24, the mounting bracket 22 abuts against the push plate 23, the puncture needle 21 is fixedly arranged on the push plate 23, and the mounting bracket 22 is movable to drive the push plate 23 to move in the direction of approaching the human body; the injection needle and the electrode needle are both fixedly arranged on the push plate 23, so that when the push plate 23 moves relative to the mounting seat 24, the injection needle and the electrode needle can be driven to move together; one end of the loading cavity of the mounting bracket 22, which faces the injection needle, is in communication with the outside, the mounting bracket 22 abuts against the push plate 23, and the injection needle at the central position extends into the loading cavity; the first pushing component pushes the push plate 23 through the mounting bracket 22, and the push plate 23 drives the injection needle and the electrode needle to approach the human body and to be punctured.

[0044] In order to make the mounting seat 24 better fit the human body, and to improve the stability when the puncture needle 21 is punctured into the human body, as shown in Figure 1 and Figure 2 The mounting seat 24 is concavely provided with an abutting end plate 241 which is fitted with the surface of the human body, the abutting end plate 241 is provided with a needle outlet hole, and the needle outlet hole is opposite to the puncture needle 21; in this embodiment, the abutting end plate 241 is a concave structure with a certain curvature, and the automatic puncture device is used for puncture and drug injection at the human arm, when the injection mechanism 2 is bound on the arm through the bandage 1, the concavely arranged abutting end plate 241 can be fitted with the surface of the arm and stably abutted.

[0045] The specific structure of the mounting bracket 22 can be arranged according to actual needs, as long as it can be driven by the pushing module 3 to realize the puncture and injection of the puncture needle 21; as shown in Figure 1 and Figure 4 The mounting bracket 22 comprises a barrel 221 and an abutting block 222, the barrel 221 has a loading cavity in the inside, the abutting block 222 is arranged on the outer wall surface of the barrel 221, the barrel 221 abuts against the push plate 23, and the end of the puncture needle 21 extends into the loading cavity; the abutting block 222 is opposite to the first pushing component, and the loading cavity is opposite to the second pushing component; specifically, the first pushing component comprises a first motor and a first push rod 31 arranged in a ring, the second pushing component comprises a second motor and a second push rod 32 arranged at the center of the first push rod 31, and the first motor and the second motor are controlled by the electric control unit in the pushing module 3; the barrel 221 is a cylindrical structure, the loading cavity penetrates through the barrel 221 along the length direction, the abutting block 222 is a long strip structure, and a plurality of abutting blocks 222 are uniformly arranged on the outer wall surface of the barrel 221 along the circumference of the barrel 221, the abutting block 222 is integrally formed with the barrel 221, the first push rod 31 arranged in a ring can abut against the abutting block 222 under the drive of the first motor, and the second push rod 32 can extend into the loading cavity and push the movable rubber plug of the medicine bottle under the drive of the second motor.

[0046] As shown in Figure 2 and Figure 4 , the injection mechanism 2 further comprises an elastic member 25, which is arranged between the push plate 23 and the mounting seat 24, and is configured to drive the push plate 23 to move away from the human body, so as to prevent the medicine bottle from continuing to drive the puncture needle 21 to penetrate into the human body through the push plate 23 when the second push rod 32 pushes the movable rubber plug of the medicine bottle, thereby ensuring the stability and controllability of the injection depth; specifically, the mounting frame 22 further comprises a bottom plate 223, which is formed by horizontally extending the end of the cylinder body 221 close to the push plate 23 in all directions, and abuts against the push plate 23, thereby increasing the contact area between the mounting frame 22 and the push plate 23 and improving the stability of the pressure transmission therebetween; the elastic member 25 is a compression spring, and the two ends of the elastic member 25 are connected to the push plate 23 and the abutting end plate 241, respectively. After the first push rod 31 drives the puncture needle 21 to penetrate to the specified injection depth, the first push rod 31 stops moving, the second push rod 32 starts moving, and pushes the movable rubber plug at the end of the medicine bottle in the loading cavity. As the second push rod 32 applies a pushing force to the movable rubber plug of the medicine bottle, the medicine in the medicine bottle will be injected into the human body through the puncture needle 21, and at the same time, the medicine bottle will push the push plate 23. Since the elastic member 25 is arranged between the push plate 23 and the mounting seat 24, and the elastic force applied by the elastic member 25 to the push plate 23 is not less than the pushing force applied by the second push rod 32 to the medicine bottle at this time, the arrangement of the elastic member 25 can prevent the second push rod 32 from pushing the puncture needle 21 to continue to penetrate. It can be understood that before the puncture operation is performed, the medical staff needs to manually put the medicine bottle into the loading cavity of the mounting frame 22, and abut the end of the medicine bottle against the push plate 23, so that the injection needle on the push plate 23 penetrates the fixed rubber plug at the end of the medicine bottle and extends into the medicine bottle. During the above-mentioned movement of the first push rod 31 and the second push rod 32, the medicine bottle remains relatively fixed with the mounting frame 22.

[0047] In addition, when the automatic puncture device needs to be removed from the patient after the injection is completed, the electric control unit controls the first push rod 31 and the second push rod 32 to move reversely. Since the elastic member 25 is arranged between the push plate 23 and the mounting seat 24, the push plate 23 can drive the puncture needle 21 to move away from the human body, so that the puncture needle 21 is automatically pulled out of the human body and retracted into the mounting seat 24, thereby avoiding that the puncture needle 21 causes secondary injury to the patient when the automatic puncture device is removed, and facilitating the medical staff to remove the automatic puncture device subsequently.

[0048] In order to ensure the stability of the push plate 23 relative to the mounting seat 24 when moving, as shown in Figure 1 and Figure 2 , a guide groove 242 is formed in the mounting seat 24, and a clamping block 231 is arranged on the push plate 23 and slidably arranged in the guide groove 242.

[0049] Further, as shown inFigure 4 As shown, the mounting seat 24 is provided with a clamping piece 243, and the mounting rack 22 can abut against the clamping piece 243 under the drive of the elastic piece 25, so that the clamping piece 243 can prevent the mounting rack 22 from being detached from the mounting seat 24, thereby greatly facilitating the early assembly work of the automatic puncture device. In this embodiment, when assembling the automatic puncture device, the worker needs to first set the push plate 23 in the mounting seat 24, and connect the mounting rack 22 and the mounting seat 24 into an integral whole, and then put the integral whole after connecting the mounting rack 22 and the mounting seat 24 into the shell 4, thereby completing the assembly; since the clamping piece 243 can limit the mounting rack 22, it can effectively prevent the mounting rack 22 from being separated from the mounting seat 24 during assembly, thereby reducing the assembly difficulty and improving the assembly efficiency. Specifically, the push plate 23 is provided with a positioning protrusion, and the bottom plate 223 of the mounting rack 22 is provided with a positioning slot matched with the positioning protrusion, and the positioning protrusion and the positioning slot are inserted and matched to position the assembly of the mounting rack 22 and the mounting seat 24.

[0050] As shown in Figure 3 and Figure 5 , the automatic puncture device further comprises a shell 4, the injection mechanism 2 and the pushing module 3 are arranged in the shell 4, and the bandage 1 is arranged in the shell 4. The shell 4 is provided with a passing hole for the puncture needle 21 to pass through, and the shell 4 encloses the pushing module 3 and the injection mechanism 2, thereby playing a protection role. Specifically, the shell 4 comprises a first shell 41 and a second shell 42, which are connected by clamping. The end of the second shell 42 is inwardly recessed to form an abutting surface that is attached to the surface of the human body. The abutting surface is provided with a passing hole. When the injection mechanism 2 and the pushing module 3 are assembled into the shell 4, the pressing end plate 241 of the injection mechanism 2 is arranged opposite to the passing hole, and the surface of the pressing end plate 241 is smoothly connected with the abutting surface outside the passing hole, forming a complete and smooth arc surface.

[0051] In order to further improve the stability and firmness of the connection between the automatic puncture device and the human body, the automatic puncture device further comprises a positioning cylinder 5, and the positioning cylinder 5 is used for sleeving the human body, and the injection mechanism 2 is detachably connected to the positioning cylinder 5. Specifically, the specific structure and material of the positioning cylinder 5 can be set according to actual needs, as long as it can be sleeved on the arm and firmly fixed. As shown in Figure 3 , the positioning cylinder 5 is a hard cylindrical structure, and a flexible air bag is arranged on the inner surface of the positioning cylinder 5. The flexible air bag is connected with an air pump, and the air pump can fill air into the flexible air bag to make the flexible air bag expand and cover the arm, thereby ensuring the firm connection with the arm. The positioning cylinder 5 can adjust the air volume according to the different arm circumference of the human body and different positions on the same arm, so as to expand the application range and practicality of the automatic puncture device.

[0052] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. An automatic puncture device, characterized in that, include: A strap (1) is used to bind a person; An injection mechanism (2) is connected to the strap (1). When the strap (1) is tied to the human body, the injection mechanism (2) abuts against the human body. The injection mechanism (2) includes a movable puncture needle (21). The push module (3) is connected to the injection mechanism (2). The push module (3) can drive the puncture needle (21) to pierce the human body. The push module (3) can also push the medicine bottle in the injection mechanism (2) in the direction close to the puncture needle (21).

2. The automatic puncture device according to claim 1, characterized in that, The injection mechanism (2) includes a mounting frame (22) having a loading cavity for holding a medicine bottle, the loading cavity being positioned directly opposite the puncture needle (21); The push module (3) includes a first push component and a second push component. The first push component can drive the puncture needle (21) to move in a direction close to the human body through the mounting bracket (22). The second push component can extend into the loading cavity and drive the movable rubber stopper at the end of the medicine bottle to move in a direction close to the puncture needle (21).

3. The automatic puncture device according to claim 2, characterized in that, The injection mechanism (2) further includes a push plate (23) and a mounting base (24). The mounting base (24) is used to abut against the human body. The push plate (23) is slidably disposed on the mounting base (24). The mounting bracket (22) abuts against the push plate (23). The puncture needle (21) is fixedly disposed on the push plate (23). The movement of the mounting bracket (22) can drive the push plate (23) to move in the direction closer to the human body.

4. The automatic puncture device according to claim 3, characterized in that, The mounting base (24) is recessed and has a pressure end plate (241) that fits against the surface of the human body. The pressure end plate (241) has a needle outlet hole, which is positioned directly opposite the puncture needle (21).

5. The automatic puncture device according to claim 3, characterized in that, The mounting bracket (22) includes a cylindrical body (221) and an abutment block (222). The cylindrical body (221) has the loading cavity inside. The abutment block (222) is disposed on the outer wall surface of the cylindrical body (221). The cylindrical body (221) abuts against the push plate (23), and the end of the puncture needle (21) extends into the loading cavity. The abutting block (222) is positioned opposite the first abutting component, and the loading cavity is positioned opposite the second abutting component.

6. The automatic puncture device according to claim 3, characterized in that, The injection mechanism (2) further includes an elastic element (25) disposed between the push plate (23) and the mounting base (24), the elastic element (25) being configured to drive the push plate (23) away from the human body.

7. The automatic puncture device according to claim 6, characterized in that, The mounting base (24) is provided with a guide groove (242), and the push plate (23) is provided with a locking block (231), which is slidably disposed in the guide groove (242).

8. The automatic puncture device according to claim 6, characterized in that, The mounting base (24) is provided with a retaining element (243), and the mounting bracket (22) can abut against the retaining element (243) under the drive of the elastic element (25).

9. The automatic puncture device according to claim 1, characterized in that, The automatic puncture device also includes a housing (4), the injection mechanism (2) and the push module (3) are both disposed in the housing (4), the strap (1) is disposed in the housing (4), and the housing (4) has a passage for the puncture needle (21) to pass through.

10. The automatic puncture device according to any one of claims 1-9, characterized in that, The automatic puncture device also includes a positioning cylinder (5), which is used to fit over the human body, and the injection mechanism (2) is detachably connected to the positioning cylinder (5).

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