Automatic puncturing device

Abstract

The invention 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 present invention relates to the technical field of medical devices, and particularly to an automatic puncture device. Background Art

[0002] In the medical field, applying an electric pulse after intramuscular injection of DNA macromolecular drugs to achieve a reversible electroporation effect to assist drug absorption is a commonly used physical delivery method at present. Compared with other delivery methods, it has the advantages of simple operation, small side effects, high absorption and conversion efficiency, etc. Currently, when injecting drugs, medical staff often hold an injection instrument to pierce the human skin and inject the drugs in the injection instrument into the muscle tissue. This injection method requires medical staff to apply force to the patient with the device in hand, and there are problems such as unstable puncture process and unqualified injection depth, which will exacerbate the pain and discomfort of the patient.

[0003] Therefore, there is an urgent need to design a puncture device to solve the above problems existing in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic puncture device, which can improve the stability of the needle puncture and achieve stable and controllable injection depth to reduce the discomfort of the patient.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The present invention provides an automatic puncture device, including:

[0007] A strap, which is used to bind to the human body;

[0008] An injection mechanism, which is connected to the strap. When the strap is bound to the human body, the injection mechanism abuts against the human body. The injection mechanism includes a movable puncture needle;

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

[0010] 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;

[0011] The pushing module includes a first pushing component and a second pushing component. The first pushing component can drive the puncture needle to move in the direction close to the human body through the mounting frame, and the second pushing component can extend into the loading cavity and drive the movable rubber stopper at the end of the medicine bottle to move in the direction close to the puncture needle.

[0012] Preferably, the injection mechanism further includes a push plate and a mounting seat. The mounting seat is used to abut against the human body. The push plate is slidably arranged on the mounting seat. The mounting frame abuts against the push plate. The puncture needle is fixedly arranged on the push plate. The movement of the mounting frame can drive the push plate to move in the direction close to the human body.

[0013] Preferably, a pressing end plate that fits the surface of the human body is recessed on the mounting seat. A needle outlet hole is formed on the pressing end plate, and the needle outlet hole is arranged opposite to the puncture needle.

[0014] Preferably, the mounting frame includes a cylinder body and an abutting block. The interior of the cylinder body has the loading cavity. The abutting block is arranged on the outer wall surface of the cylinder body. The cylinder body abuts against the push plate, and the end of the puncture needle extends into the loading cavity.

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

[0016] Preferably, the injection mechanism further includes 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 away from the human body.

[0017] Preferably, a guiding groove is formed on the mounting seat, and a clamping block is arranged on the push plate. The clamping block is slidably arranged in the guiding groove.

[0018] Preferably, a blocking member is arranged on the mounting seat, and the mounting frame can abut against the blocking member under the driving of the elastic member.

[0019] Preferably, the automatic puncture device further includes a housing. The injection mechanism and the pushing and abutting module are both arranged in the housing. The strap is arranged on the housing, and a through hole for the puncture needle to pass through is formed on the housing.

[0020] Preferably, the automatic puncture device further includes a positioning cylinder. The positioning cylinder is used to sleeve the human body, and the injection mechanism is detachably connected to the positioning cylinder.

[0021] The beneficial effects of the present invention are as follows:

[0022] The automatic puncture device provided by the present invention includes a strap, an injection mechanism, and a pushing module. The strap is used to bind to the human body, enabling the injection mechanism to be firmly fixed to the human body without manual fixation, preventing the patient from experiencing pain caused by the instability of the injection mechanism during subsequent punctures. Since the injection mechanism includes a puncture needle that is movably arranged, the pushing module can drive the puncture needle to penetrate the human body, and the pushing module can also push the medicine bottle in the injection mechanism in the direction close to the puncture needle, thereby increasing the pressure on the medicine bottle and enabling the medicine in the medicine bottle to be injected into the human body through the puncture needle, automatically completing the entire process of needle puncture and injection. The drug injection and electroperforation operations on the human body can be realized without manual operation, saving time and effort, and being convenient and fast. After using this automatic puncture device, the whole process can be realized without manual operation, and the fixed connection and puncture with the human body can be achieved, thus greatly improving the stability of the puncture process. At the same time, compared with manual puncture, the pushing module can ensure that the driving distance of the puncture needle is the same each time, making the puncture depth stable and controllable, further improving the treatment effect and reducing the discomfort of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of the first perspective of the injection mechanism and the pushing module provided by the specific embodiment of the present invention;

[0024] Figure 2 is an exploded view of the second perspective of the injection mechanism and the pushing module provided by the specific embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of the automatic puncture device provided by the specific embodiment of the present invention;

[0026] Figure 4 is a cross-sectional view of the injection mechanism and the pushing module provided by the specific embodiment of the present invention;

[0027] Figure 5 is an assembly schematic diagram of the automatic puncture device provided by the specific embodiment of the present invention.

[0028] In the figure:

[0029] 1 - Strap;

[0030] 2 - Injection mechanism; 21 - Puncture needle; 22 - Mounting frame; 221 - Cylinder body; 222 - Contact block; 223 - Bottom plate; 23 - Push plate; 231 - Block; 24 - Mounting seat; 241 - Pressing end plate; 242 - Guide groove; 243 - Blocking member; 25 - Elastic member;

[0031] 3 - Pushing module; 31 - First push rod; 32 - Second push rod;

[0032] 4 - Outer shell;

[0033] 5 - positioning cylinder. Specific embodiments

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0035] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", and "left" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0038] As Figures 1 to 3 shown, the present invention provides an automatic puncture device, which includes a strap 1, an injection mechanism 2, and a pushing module 3. The strap 1 is used to bind to the human body; the injection mechanism 2 is connected to the strap 1. When the strap 1 is bound to the human body, the injection mechanism 2 abuts against the human body. The injection mechanism 2 includes a puncture needle 21 movably arranged; the pushing module 3 is connected to the injection mechanism 2. The pushing module 3 can drive the puncture needle 21 to penetrate into the human body, and the pushing module 3 can also push the medicine bottle in the injection mechanism 2 in the direction close to the puncture needle 21.

[0039] In this embodiment, the strap 1 is used to be strapped to the human body, so that the injection mechanism 2 can be firmly fixed to the human body without manual fixing, preventing the patient from experiencing pain due to the instability of the injection mechanism 2 during subsequent puncture; since the injection mechanism 2 includes a puncture needle 21 that is movably arranged, the pushing module 3 can drive the puncture needle 21 to penetrate the human body, and the pushing module 3 can also push the medicine bottle in the injection mechanism 2 in the direction close to the puncture needle 21, so that the pressure on the medicine bottle can be increased, and the medicine in the medicine bottle can be injected into the human body through the puncture needle 21, thus automatically completing the entire process of needle puncture and injection, and realizing drug injection and electroperforation operations on the human body without manual operation, which is time-saving, labor-saving, convenient and fast; after using this automatic puncture device, the fixed connection with the human body and puncture can be realized without manual operation throughout the process, thus greatly improving the stability of the puncture process; at the same time, compared with manual puncture, the pushing module 3 can ensure that the driving distance of the puncture needle 21 is the same each time, so that the puncture depth is stable and controllable, further improving the treatment effect and reducing the discomfort of the patient.

[0040] Specifically, this automatic puncture device is used for puncture and drug injection on the limbs of the human body. The strap 1 is made of a flexible material with certain elasticity. One end of the strap 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 through a magic tape; taking the use of this automatic puncture device on the arm as an example, the following is an explanation: when wearing this automatic puncture device, it is necessary to tear off the magic tape of the strap 1 from the injection mechanism 2, place the injection mechanism 2 at the designated injection position on the arm, and then wrap the strap 1 around the arm and paste it to the other end of the injection mechanism 2, so as to fix this automatic puncture device on the arm; since the strap 1 has elasticity, it can be suitable for arms with different arm circumferences and different positions on the same arm. In another embodiment, there are two straps 1, and the two straps 1 are respectively fixed at both ends of the injection mechanism 2. Magic tapes are arranged on both straps 1, and the two straps 1 can be adhered to each other through the magic tapes. It can be understood that the strap 1 can also be connected through other common structures in the art such as buttons or zippers, which will not be elaborated here.

[0041] Such as Figure 1 and Figure 2As shown, the injection mechanism 2 includes a mounting frame 22, and the mounting frame 22 has a loading cavity, which is used to accommodate the medicine bottle, and the loading cavity is arranged opposite to 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 frame 22, and the second push component can extend into the loading cavity and drive 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 push component and the second push component are independent electric push rod mechanisms, and the push module 3 has an electric control unit. After the push module 3 receives the start command from the medical staff, the first push component starts and keeps moving to the set position. At this time, the puncture needle 21 penetrates the human body and reaches the specified injection depth. Then the electronic control unit controls the second push component 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 push component, the injection depth of the puncture needle 21 can be changed, so as to realize the stepless adjustment of the injection depth of the automatic puncture device to better meet the injection requirements of different patients.

[0042] In this embodiment, the medicine bottle is a cartridge bottle commonly used in the art, and a plurality of puncture needles 21 are provided, including an injection needle arranged opposite to the loading chamber and an electrode needle arranged around the injection needle. The injection needle and the electrode needle can be respectively inserted into the human body and reach the specified depth under the drive of the first push component; wherein both ends of the injection needle have puncture tips, and the injection needle is internally connected, and the puncture tip of the injection needle can pierce the fixed rubber plug at one end of the medicine bottle, and when the second push component 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 electric pulses to the human body to achieve a reversible electroporation effect, thereby assisting the human body in the delivery and absorption of the drug. It can be understood that the puncture needle 21 in the automatic puncture device can also be an electrode needle that only releases electric pulses after puncture, or an injection needle that only injects after puncture. The specific needle type can be set according to actual use requirements and 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 achieve the insertion of the puncture needle 21 and the injection of the drug; for example, Figure 1 and Figure 4As shown, the injection mechanism 2 also includes 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 slidably set on the mounting seat 24, the mounting frame 22 abuts against the push plate 23, and the puncture needle 21 is fixedly set on the push plate 23. The movement of the mounting frame 22 can drive the push plate 23 to move in the direction close to the human body; the injection needle and the electrode needle are both fixedly set on the push plate 23, so when the push plate 23 moves relative to the mounting seat 24, it can drive the injection needle and the electrode needle to move together; the loading cavity of the mounting frame 22 is connected to the outside toward one end of the injection needle, the mounting frame 22 abuts on the push plate 23, and the injection needle located at the center position extends into the loading cavity; the first push assembly pushes the push plate 23 through the mounting frame 22, and the push plate 23 drives the injection needle and the electrode needle to approach the human body and pierce.

[0044] In order to make the mounting seat 24 fit the human body better and improve the stability of the puncture needle 21 when piercing the human body, Figure 1 and Figure 2 As shown, the mounting seat 24 is provided with a pressing end plate 241 which fits the surface of the human body, and the pressing end plate 241 is provided with a needle outlet hole, which is arranged opposite to the puncture needle 21; in this embodiment, the pressing end plate 241 is an inwardly concave structure with a certain curvature, and the automatic puncture device is used for puncture and drug injection in the human arm. When the injection mechanism 2 is tied to the arm by the strap 1, the concave pressing end plate 241 can fit the surface of the arm and rest stably.

[0045] The specific structure of the mounting frame 22 can be set according to actual needs, as long as it can be driven by the push module 3 to achieve puncture and injection of the puncture needle 21; for example, Figure 1 and Figure 4 As shown, the mounting frame 22 includes a cylinder 221 and an abutment block 222. The cylinder 221 has a loading chamber inside. The abutment block 222 is arranged on the outer wall surface of the cylinder 221. The cylinder 221 abuts against the push plate 23, and the end of the puncture needle 21 extends into the loading chamber; the abutment block 222 is arranged opposite to the first abutment assembly, and the loading chamber is arranged opposite to the second abutment assembly; specifically, the first abutment assembly includes a first motor and a first push rod 31 arranged in an annular manner, and the second push assembly includes a second motor and a second push rod 32 arranged at the center of the first push rod 31. The motor and the second motor are controlled by the electronic control unit in the push module 3; the cylinder 221 is a cylindrical structure, the loading chamber passes through the cylinder 221 along the length direction, the abutment block 222 is a long strip structure, and multiple abutment blocks 222 are evenly arranged on the outer wall surface of the cylinder 221 along the circumference of the cylinder 221. The abutment blocks 222 and the cylinder 221 are integrally formed. The first annular push rod 31 can be driven by the first motor to abut against the abutment block 222, and the second push rod 32 can be driven by the second motor to extend into the loading chamber and push the movable plug of the medicine bottle.

[0046] As shown in Figure 2 and Figure 4 shown, the injection mechanism 2 further includes an elastic member 25 disposed between the push plate 23 and the mounting base 24. The elastic member 25 is configured to drive the push plate 23 away from the human body to prevent the medicine bottle from driving the puncture needle 21 to penetrate into the human body through the push plate 23 when the second push rod 32 presses the movable rubber stopper of the medicine bottle, thereby ensuring the stability and controllability of the injection depth. Specifically, the mounting frame 22 further includes a bottom plate 223 that horizontally extends around from the end of the cylinder 221 close to the push plate 23. The bottom plate 223 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 pressure transmission between the two. The elastic member 25 is a compression spring, and both ends of the elastic member 25 are respectively connected to the push plate 23 and the pressing end plate 241. 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 and the second push rod 32 starts to move, and abuts and pushes the movable rubber stopper at the end of the medicine bottle in the loading cavity. As the second push rod 32 applies a thrust to the movable rubber stopper of the medicine bottle, the medicine in the medicine bottle will be injected into the human body through the puncture needle 21. At the same time, the medicine bottle will abut and push the push plate 23. Since there is an elastic member 25 between the push plate 23 and the mounting base 24, and the elastic force applied by the elastic member 25 to the push plate 23 at this time is not less than the thrust applied by the second push rod 32 to the medicine bottle, the setting of the elastic member 25 can prevent the second push rod 32 from pushing the puncture needle 21 to continue to stab. It can be understood that before the puncture operation, the medical staff needs to manually place 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 pierces the fixed rubber stopper at the end of the medicine bottle and extends into the medicine bottle. During the movement of the first push rod 31 and the second push rod 32 as described above, the medicine bottle remains relatively fixed with respect to the mounting frame 22.

[0047] In addition, when the injection is completed and the automatic puncture device needs to be removed from the patient, the electronic control unit controls the first push rod 31 and the second push rod 32 to move in the reverse direction. Since there is an elastic member 25 between the push plate 23 and the mounting base 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 withdrawn from the human body and retracted into the mounting base 24, avoiding secondary injury to the patient caused by the puncture needle 21 when removing the automatic puncture device, and facilitating the subsequent medical staff to remove the automatic puncture device.

[0048] To ensure the stability of the push plate 23 relative to the mounting base 24 during movement, as shown in Figure 1 and Figure 2 shown, a guide groove 242 is formed on the mounting base 24, and a block 231 is provided on the push plate 23. The block 231 is slidably disposed in the guide groove 242.

[0049] Furthermore, as shown inFigure 4 As shown, a blocking member 243 is provided on the mounting base 24. The mounting bracket 22 can be abutted against the blocking member 243 under the drive of the elastic member 25. Then, the blocking member 243 can prevent the mounting bracket 22 from disengaging from the mounting base 24, thus greatly facilitating the preliminary assembly operation of the automatic puncture device. In this embodiment, when assembling the automatic puncture device, the staff needs to first set the push plate 23 in the mounting base 24, connect the mounting bracket 22 and the mounting base 24 into a whole, and then put the whole after connecting the mounting bracket 22 and the mounting base 24 into the housing 4 to complete the assembly. Since the blocking member 243 can limit the mounting bracket 22, it can effectively prevent the mounting bracket 22 from separating from the mounting base 24 during the assembly process, thereby reducing the assembly difficulty and improving the assembly efficiency. Specifically, a positioning convex block is provided on the push plate 23, and a positioning slot matching the positioning convex block is formed on the bottom plate 223 of the mounting bracket 22. The insertion fit between the positioning convex block and the positioning slot can play a positioning role in the assembly of the mounting bracket 22 and the mounting base 24.

[0050] As Figure 3 and Figure 5 shown, the automatic puncture device further includes a housing 4. The injection mechanism 2 and the pushing module 3 are both arranged in the housing 4. The strap 1 is arranged on the housing 4. A through hole for the puncture needle 21 to pass through is formed on the housing 4. The housing 4 encloses the pushing module 3 and the injection mechanism 2 to play a protective role. Specifically, the housing 4 includes a first housing 41 and a second housing 42, which are snap-fastened. The end of the second housing 42 is recessed inward to form an abutting surface that fits the human body surface. A through hole is formed on the abutting surface. When the injection mechanism 2 and the pushing module 3 are installed in the housing 4, the pressing end plate 241 of the injection mechanism 2 is arranged opposite to the through hole, and the surface of the pressing end plate 241 is smoothly spliced with the abutting surface outside the through hole to form a complete and smooth arc surface.

[0051] To further improve the stability and firmness of the connection between the automatic puncture device and the human body, the automatic puncture device further includes a positioning cylinder 5. The positioning cylinder 5 is used to be sleeved on 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. Exemplarily, as Figure 3 shown, the positioning cylinder 5 is a rigid cylindrical structure, and a flexible airbag is arranged on its inner surface. The flexible airbag is externally connected with an air pump, and the air pump can inflate the flexible airbag with air so that the flexible airbag expands and wraps around the arm to ensure a firm connection with the arm. The positioning cylinder 5 can adjust the inflation amount according to the different arm circumferences of the human body and different positions on the same arm to expand the applicable range and practicability of the automatic puncture device.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An automatic puncture device, characterized in that, Comprising: A strap (1) for binding to the human body. An injection mechanism (2) connected to the strap (1). When the strap (1) is bound to the human body, the injection mechanism (2) abuts against the human body. The injection mechanism (2) includes a puncture needle (21) movably arranged. A pushing module (3) connected to the injection mechanism (2). The pushing module (3) can drive the puncture needle (21) to pierce into the human body, and the pushing 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 accommodating the medicine bottle, and the loading cavity is arranged opposite to the puncture needle (21). The pushing module (3) includes a first pushing component and a second pushing component. The first pushing component can drive the puncture needle (21) to move in the direction close to the human body through the mounting frame (22), and the second pushing component can extend into the loading cavity and drive the movable rubber stopper at the end of the medicine bottle to move in the 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 seat (24). The mounting seat (24) is used to abut against the human body. The push plate (23) is slidably arranged on the mounting seat (24). The mounting frame (22) abuts against the push plate (23). The puncture needle (21) is fixedly arranged on the push plate (23), and the movement of the mounting frame (22) can drive the push plate (23) to move in the direction close to the human body.

4. The automatic puncture device according to claim 3, characterized in that, The mounting seat (24) is recessed with a pressing end plate (241) that fits the surface of the human body. The pressing end plate (241) is provided with a needle outlet hole, and the needle outlet hole is arranged opposite to the puncture needle (21).

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

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

7. The automatic puncture device according to claim 6, wherein, The mounting seat (24) is provided with a guiding groove (242), and the push plate (23) is provided with a clamping block (231). The clamping block (231) is slidably arranged in the guiding groove (242).

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

9. The automatic puncture device according to claim 1, characterized in that, The automatic puncture device further includes a housing (4), the injection mechanism (2) and the pushing module (3) are both arranged in the housing (4), the strap (1) is arranged on the housing (4), and a through hole for the puncture needle (21) to pass through is formed in the housing (4).

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

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