Mechanical gripper cutter selecting type monitoring puncture system

Abstract

The utility model provides a mechanical gripper knife selection type monitorable puncture system, which belongs to the technical field of clinical examination instruments and comprises a Y-direction guide rail mechanism and a control system, one end of the Y-direction guide rail mechanism is slidably arranged on an X-direction guide rail mechanism, a puncture gripper mechanism is slidably arranged on one side of the Y-direction guide rail mechanism, and the other side of the Y-direction guide rail mechanism is provided with a knife selection mechanism. A camera is fixedly arranged on the puncture gripper mechanism, the camera is electrically connected with the control system, a pipetting mechanism is arranged on the other side of the Y-direction guide rail mechanism in a sliding mode, the puncture gripper mechanism comprises a gripper connecting plate, and the lower end of the gripper connecting plate is fixedly connected with a gripper assembly used for fixing a puncture module. The puncture module comprises a puncture mounting seat, a steel needle mounting plate is fixedly arranged on one side of the puncture mounting seat, and a plurality of puncture steel needles and puncture spring columns are fixedly arranged on the side, away from the puncture mounting seat, of the steel needle mounting plate. When the puncture system is used for puncturing, the puncture precision is high, and the puncture efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of clinical testing equipment technology, specifically to a mechanical gripper-type puncture system with monitoring capabilities. Background Technology

[0002] In blood typing experiments, traditional puncture mechanisms struggle to accurately locate the designated wells when puncturing microcolumn gel cards, resulting in insufficient puncture precision. Furthermore, some previous puncture mechanisms employed multiple motors to control different wells. While multiple motors achieved the puncture function, they occupies a large space, and coordinating multiple motors is challenging. Each set of sample wells requires a lengthy switching and positioning operation, significantly extending the overall testing time for batch samples and failing to meet the demands of rapid clinical testing, leading to low puncture efficiency. Therefore, we propose a mechanical gripper-based, blade-selective, and monitorable puncture system. Utility Model Content

[0003] The purpose of this invention is to provide a mechanical gripper-type puncture system with knife selection and monitoring capabilities to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a mechanical gripper-type, monitorable puncture system, including a Y-axis guide rail mechanism and a control system. One end of the Y-axis guide rail mechanism is slidably mounted on an X-axis guide rail mechanism. A puncture gripper mechanism is slidably mounted on one side of the Y-axis guide rail mechanism. A camera is fixedly mounted on the puncture gripper mechanism and electrically connected to the control system. A pipetting mechanism is slidably mounted on the other side of the Y-axis guide rail mechanism. The puncture gripper mechanism includes a gripper connecting plate. A gripper assembly for fixing a puncture module is fixedly connected to the lower end of the gripper connecting plate. The puncture module includes a puncture mounting seat. A steel needle mounting plate is fixedly mounted on one side of the puncture mounting seat. A plurality of puncture steel needles and puncture spring posts are fixedly mounted on the side of the steel needle mounting plate away from the puncture mounting seat.

[0006] Furthermore, the X-axis guide rail mechanism includes an X-axis plate, an X-axis drive motor fixedly mounted at one end of the X-axis plate, an X-axis drive wheel connected to the output end of the X-axis drive motor, an X-axis driven wheel mounted at the end of the X-axis plate away from the X-axis drive motor, an X-axis synchronous belt connected between the X-axis drive wheel and the X-axis driven wheel, an X-axis upward guide rail and an X-axis downward guide rail fixedly mounted at the upper and lower ends of the X-axis plate, an X-axis upward moving plate slidably mounted on the X-axis upward guide rail, an X-axis downward moving plate slidably mounted on the X-axis downward guide rail, and an X-axis downward moving plate fixedly connected to the X-axis synchronous belt via an X-axis synchronous belt seat.

[0007] Furthermore, the Y-guide rail mechanism includes a Y-plate, one end of which is fixedly connected to an X-up moving plate and an X-down moving plate. A Y-drive motor is fixedly mounted on the end of the Y-plate near the X-guide rail mechanism. The output end of the Y-drive motor is connected to a Y-drive wheel. A Y-driven wheel is mounted on the end of the Y-plate away from the Y-drive motor. A Y-synchronous belt is connected between the Y-drive wheel and the Y-driven wheel. A Y-synchronous belt seat is fixedly mounted on the Y-synchronous belt. A gripper connecting plate is connected to the Y-synchronous belt seat. A first slide rail is mounted on the side of the Y-plate where the Y-drive motor is located. A first slider is slidably mounted on the first slide rail. The top and bottom of the first slider are fixedly connected to the gripper connecting plate, respectively. The first slider is fixedly connected to a pipetting mechanism. The side wall of the gripper connecting plate is fixedly connected to the gripper connecting plate.

[0008] Furthermore, a Y-direction cable tray is provided on the upper part of the Y-direction plate, and connecting plates are fixed at both ends of the Y-direction plate along its length. The two ends of the Y-direction cable tray are fixedly connected to the tops of the two connecting plates, and an X-direction cable tray is fixed on the side of the X-direction plate away from the Y-direction guide rail mechanism.

[0009] Furthermore, the control system includes a cantilever main control board and a top circuit board. The cantilever main control board is fixed on a connecting plate near the X-axis guide rail mechanism. The cantilever main control board is electrically connected to the X-axis drive motor and the Y-axis drive motor via wiring, which is arranged in the X-axis cable tray. The top cover of the pipetting mechanism and the puncture gripper mechanism is equipped with a circuit board bracket. The top circuit board is fixed on the circuit board bracket and is electrically connected to the pipetting mechanism via wiring, which is arranged in the Y-axis cable tray.

[0010] Furthermore, the gripper assembly includes a gripper base, the upper part of which is fixedly connected to a gripper connecting plate. The lower part of the gripper base has a U-shaped groove with an opening facing downwards. A second slide rail is provided at the top of the U-shaped groove. Two finger sliders are slidably mounted on the second slide rail. Gripper fingers for clamping the puncture module are fixedly connected to the finger sliders. The two gripper fingers are connected by a finger motor, which is fixedly mounted in the U-shaped groove. A release module for fixing the puncture module is provided between the finger motor and the gripper fingers, and the release module is fixedly mounted in the U-shaped groove.

[0011] Furthermore, the ejector module includes a spring pin seat, a spring pin cover on one side of the spring pin seat, and a spring-loaded pin on the side of the spring pin seat away from the spring pin cover. The spring-loaded pin is fixedly connected to the side of the puncture mounting seat away from the steel needle mounting plate.

[0012] Compared with the prior art, the present invention has the following technical effects:

[0013] In this invention, a camera is installed on the puncture gripper mechanism. The camera can accurately identify the puncture needle and the micropillar gel card, assisting the puncture gripper mechanism in puncture positioning and ensuring precise alignment between the puncture needle and the orifice, thus improving puncture accuracy. It also reduces the time required for manual calibration or positioning, thereby increasing puncture efficiency. Furthermore, this puncture system integrates a drive structure, enabling rapid motor switching and positioning operations. The operation is simple and coordinated. The puncture module has also been improved; it can be combined according to the micropillar gel cards at different orifices. This allows the puncture gripper mechanism to be equipped with multiple puncture needles, enabling simultaneous puncture of multiple orifices. This allows for the completion of puncture operations on a large number of samples in a short time, significantly saving time and improving puncture efficiency compared to puncturing only one orifice at a time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the puncture system according to an embodiment of the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the overall structure of the puncture system according to an embodiment of the present invention. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the X-axis guide rail mechanism and the Y-axis guide rail mechanism according to an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the piercing gripper mechanism according to an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the gripper assembly according to an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the card removal module according to an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the puncture module in an embodiment of the present invention.

[0021] In the diagram: 1. X-axis guide rail mechanism, 101. X-axis plate, 102. X-axis drive motor, 103. X-axis drive wheel, 104. X-axis driven wheel, 105. X-axis synchronous belt, 106. X-axis upward guide rail, 107. X-axis downward guide rail, 108. X-axis upward moving plate, 109. X-axis downward moving plate, 110. X-axis synchronous belt seat;

[0022] 2. Y-axis guide rail mechanism, 201. Y-axis plate, 202. Y-axis drive motor, 203. Y-axis driving wheel, 204. Y-axis driven wheel, 205. Y-axis synchronous belt, 206. Y-axis synchronous belt seat, 207. gripper connecting plate, 208. first slide rail, 209. first slider;

[0023] 3. Pipetting mechanism;

[0024] 4. Puncture gripper mechanism, 401. Gripper connecting plate, 402. Gripper assembly, 4021. Gripper seat, 4022. Gripper finger, 4023. U-shaped groove, 4024. Second slide rail, 4025. Finger slider, 4026. Finger motor, 4027. Unlocking module, 40271. Spring pin seat, 40272. Spring pin cover, 40273. Spring pin, 4028. Puncture module, 40281. Puncture mounting seat, 40282. Steel needle mounting plate, 40283. Puncture steel needle, 40284. Puncture spring post;

[0025] 5. Camera, 6. X-axis cable tray, 7. Y-axis cable tray, 8. Cantilever main control board, 9. Top circuit board, 10. Circuit board bracket, 11. Camera connector, 12. Connecting board. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 7 This embodiment provides a mechanical gripper-type, monitorable puncture system, including an X-axis guide rail mechanism 1, a Y-axis guide rail mechanism 2, a pipetting mechanism 3, a puncture gripper mechanism 4, and a control system. One end of the Y-axis guide rail mechanism 2 is slidably mounted on the X-axis guide rail mechanism 1. The puncture gripper mechanism 4 and a camera 5 are slidably mounted on one side of the Y-axis guide rail mechanism 2. The camera 5 is fixedly mounted on the gripper connecting plate 401 of the puncture gripper mechanism 4 via a camera connector 11. The camera 5 is also electrically connected to the control system. During operation, the camera 5 takes a picture or scans the micropillar gel card before puncture and transmits the data to the control system. The control system accurately identifies the position and orientation of the puncture site based on the data. Then, the control system adjusts the position and angle of the puncture gripper mechanism 4 according to the identification result, so that the puncture needle 40283 is aligned with the designated puncture site of the micropillar gel card, allowing the puncture needle 40283 to accurately puncture the designated puncture site of the micropillar gel card. On the other side of the Y-guide mechanism 2, a pipetting mechanism 3 is slidably provided. The pipetting mechanism 3 adopts a single-needle pipetting mechanism, which is existing technology and will not be described in detail here.

[0028] Specifically, the puncture gripper mechanism 4 includes a gripper connecting plate 401, the lower end of which is fixedly connected to a gripper assembly 402. The gripper assembly 402 is used to fix the puncture module 4028. The gripper assembly 402 includes a gripper base 4021, the upper part of which is fixedly connected to the gripper connecting plate 401. The lower part of the gripper base 4021 has a U-shaped groove 4023 with an opening facing downwards. A second slide rail 4024 is provided at the top of the U-shaped groove 4023. Two finger sliders 4025 are slidably mounted on the second slide rail 4024. Each finger slider 4025 has a gripper finger 4022 fixedly connected to it. The gripper finger 4022 can clamp the puncture module 4028. The two gripper fingers 4022 are connected by a finger motor 4026, which is fixedly mounted in the U-shaped groove 4023. The finger motor 4026 is connected to two gripper fingers 4022 on both sides via output shafts, and is used to drive the gripper fingers 4022 to move.

[0029] Specifically, a release module 4027 for fixing the puncture module 4028 is also provided between the finger motor 4026 and the gripper finger 4022. The release module 4027 is fixedly installed in the U-shaped groove 4023. The release module 4027 includes a spring pin seat 40271, which is fixedly connected to the gripper seat 4021. A spring pin cover 40272 is provided on one side of the spring pin seat 40271, and a spring-loaded pin 40273 is provided on the side of the spring pin seat 40271 away from the spring pin cover 40272. The spring-loaded pin 40273 is fixedly connected to the side of the puncture mounting seat 40281 away from the steel needle mounting plate 40282.

[0030] Specifically, the puncture module 4028 includes a puncture mounting base 40281, a steel needle mounting plate 40282 is fixedly provided on one side of the puncture mounting base 40281, and a plurality of puncture steel needles 40283 and puncture spring posts 40284 are fixedly provided on the side of the steel needle mounting plate 40282 away from the puncture mounting base 40281.

[0031] Specifically, the puncture module 4028 can be combined according to different well positions of the micropillar gel card, for example, a single-well puncture module can be combined with a three-well puncture module, or a two-well puncture module can be combined with a four-well puncture module. The combined puncture module 4028 has multiple puncture needles 40283, which work together to puncture multiple well positions simultaneously. In this embodiment, for example, when puncturing a 9-well micropillar gel card, three three-well puncture modules are combined. Each three-well puncture module has three puncture needles 40283, and each three-well puncture module corresponds to three well positions. Then, the combined puncture module 4028 is fixedly installed on the gripper assembly 402. Under the control of the X-guide rail mechanism 1 and the Y-guide rail mechanism 2, the puncture module 4028 can quickly complete the puncture of different well positions, completing the puncture operation of a large number of samples in a short time, which greatly saves time compared to puncturing only one well position at a time.

[0032] Specifically, the X-axis guide rail mechanism 1 includes an X-axis plate 101. An X-axis drive motor 102 is fixedly mounted on one end of the X-axis plate 101. An X-axis drive wheel 103 is connected to the output end of the X-axis drive motor 102. An X-axis driven wheel 104 is mounted on the end of the X-axis plate 101 away from the X-axis drive motor 102. An X-axis synchronous belt 105 is connected between the X-axis drive wheel 103 and the X-axis driven wheel 104. An X-axis upward guide rail 106 and an X-axis downward guide rail 107 are fixedly mounted on the upper and lower ends of the X-axis plate 101. An X-axis upward moving plate 108 is slidably mounted on the X-axis upward guide rail 106. An X-axis downward moving plate 109 is slidably mounted on the X-axis downward guide rail 107. The X-axis downward moving plate 109 is fixedly connected to the X-axis synchronous belt 105 through an X-axis synchronous belt seat 110.

[0033] Specifically, the Y-guide mechanism 2 includes a Y-plate 201. One end of the Y-plate 201 is fixedly connected to the X-up moving plate 108 and the X-down moving plate 109. A Y-drive motor 202 is fixedly mounted on the end of the Y-plate 201 closest to the X-guide mechanism 1. A Y-drive wheel 203 is connected to the output end of the Y-drive motor 202. A Y-driven wheel 204 is mounted on the end of the Y-plate 201 furthest from the Y-drive motor 202. A Y-synchronous connection is established between the Y-drive wheel 203 and the Y-driven wheel 204. A Y-axis synchronous belt seat 206 is fixedly installed on the Y-axis synchronous belt 205. The Y-axis synchronous belt seat 206 is connected to a gripper connecting plate 207. A first slide rail 208 is provided on one side of the Y-axis plate 201 where the Y-axis drive motor 202 is located. A first slider 209 is slidably installed on the first slide rail 208. The top and bottom of the first slider 209 are fixedly connected to the gripper connecting plate 207 respectively. The first slider 209 is fixedly connected to the pipetting mechanism 3. The side wall of the gripper connecting plate 207 is fixedly connected to the gripper connecting plate 401.

[0034] Specifically, the X-direction drive motor 102, the X-direction driving wheel 103, and the X-direction driven wheel 104 work together to drive the Y-direction guide mechanism 2 to slide along the X-direction upward guide rail 106 and the X-direction downward guide rail 107. The sliding of the dual guide rails is more conducive to the stability of the movement of the Y-direction guide mechanism 2. The Y-direction guide mechanism 2 drives the pipetting mechanism 3 and the puncture gripper mechanism 4 to move along the Y-direction synchronous belt 205 through the gripper connecting plate 207 and the first slider 209, thereby realizing the movement of the two mechanisms simultaneously.

[0035] Specifically, a Y-direction cable tray 7 is provided on the upper part of the Y-direction plate 201. Connecting plates 12 are fixed at both ends of the Y-direction plate 201 along its length. The two ends of the Y-direction cable tray 7 are fixedly connected to the tops of the two connecting plates 12. An X-direction cable tray 6 is fixed on the side of the X-direction plate 101 away from the Y-direction guide rail mechanism 2. The control system includes a cantilever main control board 8 and a top circuit board 9. The cantilever main control board 8 is fixed on the connecting plate 12 near the X-direction guide rail mechanism 1. The cantilever main control board 8 is electrically connected to the X-direction drive motor 102 and the Y-direction drive motor 202 through wiring. The wiring is arranged in the X-direction cable tray 6. A circuit board bracket 10 is provided on the top of the pipetting mechanism 3 and the puncture gripper mechanism 4. The top circuit board 9 is fixed on the circuit board bracket 10. The top circuit board 9 is electrically connected to the pipetting mechanism 3 through wiring. The wiring is arranged in the Y-direction cable tray 7.

[0036] Specifically, this puncture system incorporates a camera 5 mounted on the puncture gripper mechanism 4. Camera 5 accurately identifies the puncture needle 40283 and the microcolumn gel card, assisting the puncture gripper mechanism 4 in puncture positioning. This ensures precise alignment of the puncture needle 40283 with the orifice, improving puncture accuracy and effectively preventing sample cross-contamination and false detections. Furthermore, for scenarios requiring extremely high accuracy, such as clinical blood transfusions and blood typing, this system significantly reduces detection errors caused by puncture mistakes, providing strong protection for safe blood transfusions and accurate diagnosis. The camera 5 also reduces the time spent on manual calibration or positioning, improving puncture efficiency. Furthermore, this puncture system integrates a drive structure, enabling rapid motor switching and positioning operations. The system is easy to coordinate and operate. The puncture module 4028 has also been improved; it can be combined with micropillar gel cards at different puncture sites. This allows the puncture gripper mechanism 4 to be equipped with multiple puncture needles 40283, enabling simultaneous puncture of multiple sites. This allows for the completion of puncture operations on a large number of samples in a short time, significantly saving time and improving puncture efficiency compared to puncturing only one site at a time.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mechanically gripped, pick-and-place, monitorable, puncture system, characterized in that The system includes a Y-guide rail mechanism (2) and a control system. One end of the Y-guide rail mechanism (2) is slidably mounted on an X-guide rail mechanism (1). A puncture gripper mechanism (4) is slidably mounted on one side of the Y-guide rail mechanism (2). A camera (5) is fixedly mounted on the puncture gripper mechanism (4). The camera (5) is electrically connected to the control system. A pipetting mechanism (3) is slidably mounted on the other side of the Y-guide rail mechanism (2). The puncture gripper mechanism (4) includes a gripper connecting plate (401). The lower end of the gripper connecting plate (401) is fixedly connected to a gripper assembly (402) for fixing the puncture module (4028). The puncture module (4028) includes a puncture mounting seat (40281). A steel needle mounting plate (40282) is fixedly provided on one side of the puncture mounting seat (40281). A plurality of puncture steel needles (40283) and puncture spring posts (40284) are fixedly provided on the side of the steel needle mounting plate (40282) away from the puncture mounting seat (40281).

2. The mechanical gripper selected needle monitorable piercing system of claim 1, wherein, The X-axis guide rail mechanism (1) includes an X-axis plate (101). An X-axis drive motor (102) is fixedly provided at one end of the X-axis plate (101). An X-axis drive wheel (103) is connected to the output end of the X-axis drive motor (102). An X-axis driven wheel (104) is provided at the end of the X-axis plate (101) away from the X-axis drive motor (102). An X-axis synchronous belt (105) is connected between the X-axis drive wheel (103) and the X-axis driven wheel (104). An X-axis upward guide rail (106) and an X-axis downward guide rail (107) are fixedly provided at the upper and lower ends of the X-axis plate (101). An X-axis upward moving plate (108) is slidably provided on the X-axis upward guide rail (106). An X-axis downward moving plate (109) is slidably provided on the X-axis downward guide rail (107). The X-axis downward moving plate (109) is fixedly connected to the X-axis synchronous belt (105) through an X-axis synchronous belt seat (110).

3. The mechanical gripper selected needle monitorable piercing system of claim 2, wherein, The Y-axis guide rail mechanism (2) includes a Y-axis plate (201). One end of the Y-axis plate (201) is fixedly connected to an X-axis upward moving plate (108) and an X-axis downward moving plate (109). A Y-axis drive motor (202) is fixedly provided at the end of the Y-axis plate (201) near the X-axis guide rail mechanism (1). A Y-axis drive wheel (203) is connected to the output end of the Y-axis drive motor (202). A Y-axis driven wheel (204) is provided at the end of the Y-axis plate (201) away from the Y-axis drive motor (202). A Y-axis synchronous belt (204) is connected between the Y-axis drive wheel (203) and the Y-axis driven wheel (204). 5) A Y-axis synchronous belt seat (206) is fixedly provided on the Y-axis synchronous belt (205). The Y-axis synchronous belt seat (206) is connected to a gripper connecting plate (207). A first slide rail (208) is provided on one side of the Y-axis plate (201) where a Y-axis drive motor (202) is located. A first slider (209) is slidably provided on the first slide rail (208). The top and bottom of the first slider (209) are fixedly connected to the gripper connecting plate (207) respectively. The first slider (209) is fixedly connected to the pipetting mechanism (3). The side wall of the gripper connecting plate (207) is fixedly connected to the gripper connecting plate (401).

4. The mechanical gripper selected needle monitorable piercing system of claim 3, wherein, The upper part of the Y-direction plate (201) is provided with a Y-direction cable tray (7), and the two ends of the Y-direction plate (201) in the length direction are respectively fixed with connecting plates (12). The two ends of the Y-direction cable tray (7) are respectively fixedly connected to the top of the two connecting plates (12). The X-direction plate (101) is fixed with an X-direction cable tray (6) on the side away from the Y-direction guide rail mechanism (2).

5. The mechanical gripper selected needle monitorable piercing system of claim 4, wherein, The control system includes a cantilever main control board (8) and a top circuit board (9). The cantilever main control board (8) is fixed on a connecting plate (12) near the X-axis guide rail mechanism (1). The cantilever main control board (8) is electrically connected to the X-axis drive motor (102) and the Y-axis drive motor (202) via wiring. The wiring is arranged in the X-axis cable tray (6). The top cover of the pipetting mechanism (3) and the puncture gripper mechanism (4) is provided with a circuit board bracket (10). The top circuit board (9) is fixed on the circuit board bracket (10). The top circuit board (9) is electrically connected to the pipetting mechanism (3) via wiring. The wiring is arranged in the Y-axis cable tray (7).

6. The mechanical gripper selected needle monitorable piercing system of claim 1, wherein, The gripper assembly (402) includes a gripper base (4021), the upper part of which is fixedly connected to a gripper connecting plate (401). The lower part of the gripper base (4021) has a downward-facing U-shaped groove (4023). A second slide rail (4024) is provided at the top of the U-shaped groove (4023). Two finger sliders (4025) are slidably mounted on the second slide rail (4024). A useful... The gripper fingers (4022) of the clamping puncture module (4028) are connected by a finger motor (4026). The finger motor (4026) is fixedly installed in a U-shaped groove (4023). A release module (4027) for fixing the puncture module (4028) is provided between the finger motor (4026) and the gripper fingers (4022). The release module (4027) is fixedly installed in the U-shaped groove (4023).

7. The mechanical gripper selected needle monitorable piercing system of claim 6, wherein, The ejector module (4027) includes a spring needle seat (40271), a spring needle cover (40272) is provided on one side of the spring needle seat (40271), and a spring-loaded pin (40273) is provided on the side of the spring needle seat (40271) away from the spring needle cover (40272). The spring-loaded pin (40273) is fixedly connected to the side of the puncture mounting seat (40281) away from the steel needle mounting plate (40282).

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