A mouse tail vein puncture device under video guidance

Abstract

This invention discloses a video-guided mouse tail vein puncture device, belonging to the field of injection device technology. The key technical features include: a device and a support plate, detachably connected; a rotating block is installed within the device, sliding along its length to secure mice of different sizes; a fixing block is mounted on the support plate, with an adjustable catheter mounted on it; cameras are fixedly mounted on the two inclined sections of a folded plate fitted onto the catheter; a fixing mechanism for securing the mouse tail is installed within a fixing groove to assist the experimenter in performing mouse tail vein puncture; furthermore, an infrared emitter is ring-shaped mounted on the folded plate. This injection device not only secures the mouse and its tail but also assists the experimenter in quickly and accurately locating the mouse tail vein, reducing the number of punctures and improving experimental efficiency.

Description

Technical Field

[0001] This invention relates to the field of injection device technology, and more specifically, to a video-guided tail vein puncture device for mice. Background Technology

[0002] Pharmacological experiments are divided into in vitro experiments, animal experiments, and clinical trials (human trials). Animal experiments are an essential stage before a drug is applied to humans. Animal pharmacological experiments can effectively evaluate the efficacy and safety of drugs, help determine the safe dosage range for drug application, and avoid damage caused by excessive dosage; they also help avoid or reduce the incidence of adverse drug reactions in humans. Animal experiments have become an indispensable and important experimental technique in the field of biomedical science and are widely used.

[0003] Because mice and humans share a high degree of genetic similarity and are readily available, most preclinical studies in life sciences and drug trials are conducted using mice. Many diseases that are difficult to cure in humans can be tested on mice to identify similarities and conduct research. Mice have become the most widely used, thoroughly studied, and versatile mammalian laboratory animal. Drug administration to laboratory mice includes tail vein injection, enema, intraperitoneal injection, subcutaneous injection, lateral ventricle injection, and nasal administration, among others. Intravenous injection is one of the most common methods of drug administration and targeted gene intervention in laboratory mice.

[0004] Because mice are live animals, and because they are small, agile, and uncontrollable, the tail vein injection process is very time-consuming and laborious, and sometimes may even result in bites to the experimenters. Therefore, to protect the health of the experimenters and ensure the safe conduct of the experiment, a mouse tail vein injection device is needed to assist the experimenters in restraining the mice during the experiment.

[0005] Existing mouse tail vein injection devices are only used to restrain mice, primarily to soothe them and prevent them from biting researchers. During tail vein injection, the needle should be inserted with the bevel facing upwards. After the needle tip enters the vein, it can be seen moving within the blood vessel. However, some inexperienced researchers may accidentally insert the needle into a non-venous location in the tail, requiring repeated punctures, which reduces experimental efficiency and the effectiveness of the injection. Summary of the Invention

[0006] The purpose of this invention is to provide a video-guided mouse tail vein puncture device. This injection device not only fixes the mouse and its tail, but also assists researchers in quickly and accurately locating the tail vein and completing the tail vein puncture under direct video visualization and infrared imaging guidance. This reduces the number of punctures required by researchers, improving puncture efficiency and experimental success rate.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a video-guided mouse tail vein puncture device, comprising a device with an open end; the device is a cylindrical empty tube for placing a mouse, one end of the device is provided with a cover, and the device is provided with a rotating block slidably connected to its inner sidewall; the rotating block is provided with a head limiting groove with its opening facing the cover; the sidewall of the device is provided with a through sliding groove II and multiple through limiting grooves, the sidewall of the rotating block is provided with a push rod, the end of the push rod away from the rotating block passes through the sliding groove II and is located outside the device; the inner sidewall of the device is provided with a limiting ring, the end of the cover contacts the limiting ring, and multiple fixing bolts are provided on the sidewalls of the device and the cover; the end cap of the cover is provided with a through hole; the bottom of the device is provided with a support plate, the top of the support plate is detachably connected to the bottom of the device;

[0008] The support plate has a fixing block at its top, and the fixing block has a fixing groove at its top with openings at both ends and at the top. At least two fixing mechanisms are provided along the length of the fixing groove. The fixing block also has two strip-shaped grooves with openings at the top, which are located on both sides of the fixing groove. A translation mechanism is provided in each of the two strip-shaped grooves. A U-shaped rod is provided at the top of the translation mechanism, and a notch is provided at the top of the U-shaped rod. The notch is located directly above the fixing groove. A guide device is provided in the notch.

[0009] The guiding device includes a second translation mechanism, a translation block, a guide tube, a folding plate, and multiple infrared emitters; the translation block is sleeved on the second translation mechanism, the guide tube is obliquely inserted through the translation block, and the outer wall of the guide tube is threadedly connected to the translation block; the folding plate is fixedly sleeved on the outer wall of the guide tube, and multiple infrared emitters are installed on the side wall of the folding plate with equal arc lengths around the guide tube;

[0010] The second translation mechanism includes a stepper motor, a second bearing, and a second threaded rod; the stepper motor and the second bearing are fixedly connected to the two side walls of the notch, and the two ends of the second threaded rod are fixedly connected to the output end of the stepper motor and the second bearing, respectively; the translation block is sleeved on the second threaded rod.

[0011] By adopting the above technical solution, the catheter is inclinedly inserted through the translation block, which is then fitted onto the threaded rod. This allows for fine-tuning of the translation block to align the catheter opening with the mouse's tail vein. Multiple infrared emitters are installed on the folded plate, with the light emission lines of the infrared emitters forming an acute angle with the catheter. The sidewall of the catheter is threadedly connected to the translation block. By rotating the catheter, relative movement between the catheter and the translation block is achieved, adjusting the convergence point of the multiple infrared emitters so that the convergence point is located on the mouse's tail. The experimenter only needs to insert the needle into the catheter to accurately puncture the mouse's tail vein, achieving precise tail vein injection. By installing a rotating block that slides along the length of the device, and a push rod on the sidewall of the rotating block that can move along the sliding groove and limiting groove, the size of the mouse can be adjusted to fix it, and the mouse can be turned over to adjust the position of the mouse's tail vein, making it easier for the experimenter to locate the mouse's tail vein.

[0012] The invention is further configured such that: the top of the fixing block is provided with a top-opening groove; the fixing mechanism includes a rubber block, a spring, two connecting rods and a lever; one end of the spring is fixedly connected to the side wall of the fixing groove, and the other end of the spring is fixedly connected to the rubber block; the side wall of the rubber block connected to the spring is also fixedly connected to the ends of the two connecting rods, the two connecting rods are respectively located on both sides of the spring, and the ends of the two connecting rods away from the rubber block are located in the groove and fixedly connected to the side wall of the lever.

[0013] By adopting the above technical solution, the side wall of the rubber block is fixedly connected to the end of the spring. In this way, when the mouse tail is placed in the fixing groove, the rubber block presses the tail tightly under the action of the spring. At the same time, the rubber block can increase friction, thereby enhancing the effect of fixing the mouse tail.

[0014] The present invention is further configured such that: the first translation mechanism includes a servo motor, a first threaded rod, a first slider, and a first bearing; the first servo motor and the first bearing are respectively fixedly connected to the two end sidewalls of the groove, the two ends of the first threaded rod are respectively fixedly connected to the output end of the servo motor and the first bearing; the first slider is sleeved on the first threaded rod, and the bottom of the U-shaped rod is simultaneously fixedly connected to the sliders of the two first translation mechanisms.

[0015] By adopting the above technical solution, the bottom of the U-shaped rod is fixedly connected to the top of the slider, and the slider is adjusted on the threaded rod. In this way, the front and rear positions of the catheter can be adjusted by rotating the servo motor, so that the experimenter can select the best tail position for injection.

[0016] The present invention is further configured such that multiple light strips are provided on both sides of the fixing groove.

[0017] By adopting the above technical solution, light strips are installed on both sides of the fixing groove. The light strips can simultaneously illuminate both sides of the mouse tail, allowing the experimenter to clearly see the mouse tail vein, thus facilitating the injection operation.

[0018] The present invention is further configured such that: the rotating block is provided with a plurality of vent holes penetrating the rotating block.

[0019] By adopting the above technical solution, multiple ventilation holes are opened on the rotating block to prevent mice from suffocating during the injection process.

[0020] The present invention is further configured such that a handle is fixedly provided on the side wall of the cover.

[0021] By adopting the above technical solution, a handle is provided on the side wall of the cover, making it easier for the experimenter to pull out the cover.

[0022] The invention is further configured such that: the folded plate is composed of a planar segment and two inclined segments, the two inclined segments of the folded plate are mirror-symmetrically installed at both ends of the planar segment, and the included angle between the inclined segments and the planar segment of the folded plate is an obtuse angle; a camera is provided on each of the two inclined segments of the folded plate.

[0023] By adopting the above technical solution, a magnifying glass is embedded in the inclined section of the folded plate. This allows the experimenter to clearly see the positional relationship between the convergence point of infrared rays and the tail vein, thereby improving the efficiency of tail vein injection.

[0024] The present invention is further configured such that: the side wall of the support plate is provided with an information transmission port.

[0025] By adopting the above technical solution, an information transmission port is opened on the side wall of the support plate. The information transmission port can transmit the information captured by the camera to the display screen through the plug-in transmission line, thereby realizing tail vein puncture under video guidance.

[0026] In summary, the present invention has the following beneficial effects:

[0027] 1. The catheter is inclined and inserted through the translation block, while the translation block is sleeved on the threaded rod two. This way, the catheter opening can be aligned with the tail vein of the mouse by fine adjustment of the translation block.

[0028] 2. Install multiple infrared emitters on a folded plate. The light emission lines of the infrared emitters form an acute angle with the conduit. At the same time, the sidewall of the conduit is threadedly connected to the translation block. By rotating the conduit, relative movement is generated between the conduit and the translation block, which can adjust the convergence point of the multiple infrared emitters so that the convergence point is located on the mouse tail. The experimenter only needs to insert the needle into the conduit to puncture, which can accurately insert the needle tip into the mouse tail vein, achieving the effect of precise tail vein injection.

[0029] 3. Fix the side wall of the rubber block to the end of the spring. When the mouse's tail is placed in the fixing groove, the rubber block will press the tail tightly under the action of the spring. At the same time, the rubber block can increase friction, thereby enhancing the effect of fixing the mouse's tail.

[0030] 4. By installing a rotating block that slides along the length of the device inside the device, and having a push rod on the side wall of the rotating block that can move along the slide groove and the limiting groove, it is possible not only to adjust the size of the mouse to fix it, but also to flip the mouse over to adjust the position of the mouse's tail vein, making it easier for the experimenter to find the mouse's tail vein. Attached Figure Description

[0031] Figure 1 This is a side half-sectional view of a video-guided mouse tail vein puncture device according to an embodiment of the present invention;

[0032] Figure 2 This is a top view of the inclined section of the support plate in an embodiment of the present invention;

[0033] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0034] Figure 4 yes Figure 2 Cross-sectional view at point AA;

[0035] Figure 5 yes Figure 2 Cross-sectional view at point BB;

[0036] Figure 6 yes Figure 2 Cross-sectional view at point C;

[0037] Figure 7 yes Figure 5 Schematic diagram of the structure in the AA direction;

[0038] Figure 8 This is a left view of the fixture in an embodiment of the present invention;

[0039] Figure 9 This is a front view of the cover in an embodiment of the present invention;

[0040] Figure 10 This is a top view of the fixture in an embodiment of the present invention.

[0041] In the diagram: 1. Fixture; 2. Head limiting groove; 3. Groove; 4. Protrusion; 5. Information transmission port; 6. Support plate; 7. Fixing block; 8. U-shaped rod; 9. Fixing groove; 10. Flared opening; 11. Conduit; 12. Through hole; 13. Handle; 14. Cover; 15. Fixing bolt; 16. Limiting ring; 17. Stepper motor; 18. Threaded rod II; 19. Rubber block; 20. Connecting rod; 21. Spring; 22. Toggle lever; 23. Slide I; 24. Bearing I; 25. Translation block; 26. Bearing II; 27. Slider; 28. Threaded rod I; 29. ​​Strip groove; 30. Servo motor; 31. Folding plate; 32. Infrared transmitter; 33. Light strip; 34. Vent hole; 35. Rotating block; 36. Push rod; 37. Limiting groove; 38. Slide II; 39. Camera. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-10 The present invention will be described in further detail below.

[0043] Example: A video-guided mouse tail vein puncture device, such as... Figures 1 to 10 As shown, the device includes a holder 1 with an opening at one end; the holder 1 is a cylindrical empty tube for placing a mouse, and one end of the holder 1 is provided with a detachable cover 14. A rotating block 35 is installed inside the holder 1 and slidably connected to its inner wall; the rotating block 35 can move along the inside of the holder 1 and can also rotate around its axis. The rotating block 35 also has a head-limiting groove 2 with an opening facing the cover 14. The head-limiting groove 2 utilizes the characteristic of mice to burrow; when the mouse's head enters the head-limiting groove 2, the rotating block 35 can be slid to fix the mouse in place. Figure 10 As shown, the top of the fixture 1 is provided with a through-slide groove 38 and multiple through-limiting grooves 37. The limiting grooves 37 are connected to the through-slide groove 38 and are perpendicular to it. A push rod 36 is fixedly installed on the side wall of the rotating block 35. The end of the push rod 36 away from the rotating block 35 passes through the through-slide groove 38 and is located outside the fixture 1. A cover 14 is installed at the end opening of the fixture 1. The cover 14 can be pulled out of the fixture 1. A limiting ring 16 is provided on the inner side wall of the fixture 1. The limiting ring 16 is integrally formed with the fixture 1. The end of the cover 14 contacts the limiting ring 16, which is the maximum depth position for insertion into the fixture 1. Three fixing bolts 15 are installed on the side walls of the fixture 1 and the cover 14. Figure 8 As shown, three fixing bolts 15 are located on the top and both sides of the device. The side wall of the cover 14 has threaded holes, and the fixture 1 also has corresponding threaded holes. After the cover 14 is inserted into the fixture 1, its threaded holes are aligned, and then the fixing bolts 15 are rotated into the threaded holes to fix the cover 14. A through hole 12 is opened at the end cap of the cover 14, allowing the mouse's tail to pass through. The bottom of the fixture 1 is preferably as shown in the image. Figure 8As shown in the figure, a support plate 6 is fixedly installed at the bottom of the fixture 1. Four protrusions 4 are fixedly installed at the top of the support plate 6. Four grooves 3 are correspondingly opened at the bottom of the fixture 1. All the protrusions 4 are inserted into the grooves 3. This can fix the fixture 1 and also facilitate the disassembly by the experimenter.

[0044] A fixing block 7 is fixedly installed on the top of the support plate 6, such as... Figure 2 As shown, the top of the fixing block 7 has a fixing groove 9 with openings at both ends and the top. The mouse's tail can be placed in the fixing groove 9 after passing through the through hole 12. Two fixing mechanisms are installed along the length of the fixing groove 9. The top of the fixing block 7 also has two strip-shaped grooves 29 with openings at the top. The two strip-shaped grooves 29 are located on both sides of the fixing groove 9. A translation mechanism is installed in each of the two strip-shaped grooves 29. A U-shaped rod 8 is fixedly installed on the top of the translation mechanism. The top of the U-shaped rod 8 has a notch, which is located directly above the fixing groove 9. A guide device is fixedly installed in the notch.

[0045] The guiding device includes a translation mechanism 2, a translation block 25, a guide tube 11, a folding plate 31, and multiple infrared emitters 32; for example Figure 5 As shown, the translation block 25 is sleeved on the translation mechanism two, and the catheter 11 is obliquely inserted through the translation block 25. This allows for easier injection of medication into the tail vein after the needle tip is inserted into the vein. The inner diameter of the catheter 11 is 0.33 mm, corresponding to the needle of a 1 ml syringe. One section of the outer wall of the catheter 11 is a threaded section, and the outer wall of the catheter 11 is threadedly connected to the translation block 25. This allows for adjustment of the height position at the outlet of the catheter 11 simply by rotating the catheter 11. In this embodiment, a flared end 10 is also provided at the inlet of the catheter 11 to facilitate the insertion of the needle tip. Insert the catheter 11; fix a folded plate 31 on the outer wall near the outlet of the catheter 11, and fix six infrared emitters 32 on the side of the folded plate 31 near the outlet of the catheter 11. The six infrared emitters 32 are installed on the side wall of the folded plate 31 with equal arc length with the catheter 11 as the center. The infrared emitters 32 and the catheter 11 form a certain angle, so that there must be a convergence point of the six infrared emitters 32. By rotating the catheter 11, its height can be adjusted so that its convergence point is at the tail vein, so that the outlet end of the catheter 11 is aligned with the tail vein of the mouse.

[0046] The second translation mechanism includes a stepper motor 17, a second bearing 26, and a second threaded rod 18; the stepper motor 17 and the second bearing 26 are fixedly connected to the two side walls of the notch, respectively, and the two ends of the second threaded rod 18 are fixedly connected to the output end of the stepper motor 17 and the second bearing 26, respectively; the translation block 25 is sleeved on the second threaded rod 18.

[0047] The top of the fixing block 7 also has a top opening groove 23; the fixing mechanism includes a rubber block 19, a spring 21, two connecting rods 20 and a lever 22; as Figure 4 As shown, one end of the spring 21 is fixedly connected to the side wall of the fixing groove 9, and the other end of the spring 21 is fixedly connected to the rubber block 19. The side wall of the rubber block 19 connected to the spring 21 is also fixedly connected to the ends of two connecting rods 20. The two connecting rods 20 are located on both sides of the spring 21. The ends of the two connecting rods 20 away from the rubber block 19 are located in the slide groove 23 and fixedly connected to the side wall of the lever 22. The top of the lever 22 is located outside the slide groove 23.

[0048] The translation mechanism includes a servo motor 30, a threaded rod 28, a slider 27, and a bearing 24. The servo motor 30 and the bearing 24 are fixedly connected to the two end sidewalls of the groove, respectively. The two ends of the threaded rod 28 are fixedly connected to the output end of the servo motor 30 and the bearing 24, respectively. The slider 27 is sleeved on the threaded rod 28, and the bottom of the U-shaped rod 88 is fixedly connected to the sliders 27 of both translation mechanisms.

[0049] Multiple light strips 33 are installed on both sides of the fixing slot 9. The light strips 33 are used to illuminate the mouse tail so that the experimenter can clearly see the mouse's tail vein.

[0050] The end of the device 1 away from the cover 14 is provided with multiple ventilation holes 34, which are used to prevent the mouse from suffocating and dying.

[0051] A handle 13 is fixedly provided on the side wall of the cover 14 to facilitate the removal of the cover 14.

[0052] like Figure 7 As shown, the folded plate 31 consists of a planar segment and two inclined segments. The two inclined segments of the folded plate 31 are mirror-symmetrically installed at both ends of the planar segment, and the angle between the inclined segments and the planar segment of the folded plate 31 is an obtuse angle. Cameras 39 are installed on both inclined segments of the folded plate 31. In this embodiment, the observation convergence point of the two cameras 39 is at the same position as the convergence point of the infrared rays. In this way, the observation point of the cameras 39 can move synchronously with the infrared emitter 32, so that the experimenter can observe the injection position through the display screen.

[0053] In this embodiment, an information transmission port 5 is also provided on the side wall of the support plate 6. The information transmission port 5 can be connected to a USB transmission cable, so that the image captured by the camera 39 can be transmitted to the connected display screen in real time, making it convenient for the experimenters to observe through the display screen.

[0054] Working principle: When the experimenter uses this injection device, the device 1 is snapped onto the support plate 6, then the cover 14 is pulled out, and the mouse is placed into the device 1 with its head facing the head limiting groove 2 of the rotating block 35 and its tail facing the opening. Then, the cover 14 is inserted into the device 1, and the rotating block 35 is moved so that the rotating block 35 and the cover 14 clamp the mouse's head and tail, reducing the mouse's movement space. Then, the push rod 36 is pushed into the limiting groove 37, which not only fixes the rotating block 35 but also allows the mouse to rotate 90 degrees, so that the mouse's tail vein faces the top, making it easier for the experimenter to puncture. After fixing the position of the rotating block 35, the cover 14 is rotated so that the mouse's tail passes through the through hole 12. The cover 14 is then fixed by the fixing bolt 15, and then the cover 14 is inserted into the device 1 and fixed by rotating the fixing bolt 15. Then, the lever 22 is pulled to move the mouse... The mouse's tail is placed into the fixing slot 9. After placement, the lever 22 is released, and the rubber block 19, under the action of the spring 21, tightly squeezes the mouse's tail. Then, the light strip 33 is turned on, and the light strips 33 on both sides of the fixing slot 9 illuminate the mouse's tail, exposing its tail vein under light. Then, the position of the catheter 11 is adjusted by pressing the adjustment button (not marked in the figure). At the same time, the infrared emitter 32 is turned on. By rotating the catheter 11, the irradiation convergence point of the infrared emitter 32 is positioned at the mouse's tail. When the irradiation convergence point of the infrared emitter 32 is located at the tail vein, the needle is inserted into the catheter 11 and then pierced into the mouse's tail. This allows for accurate puncture into the mouse's tail vein. After puncture, fluid can be injected into the mouse's tail vein. Throughout the puncture process, the camera 39 transmits the captured images to the display screen in real time. The experimenter can clearly see the position of the mouse's tail vein simply by looking at the display screen.

[0055] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A video-guided mouse tail vein puncture device, comprising a device (1) with an opening at one end; characterized in that: The device (1) is a cylindrical empty tube for placing a mouse. One end of the device (1) is provided with a cover (14). The device (1) has a rotating block (35) that is slidably connected to its inner sidewall. The rotating block (35) has a head limiting groove (2) with its opening facing the cover (14). The sidewall of the device (1) is provided with a through sliding groove (38) and multiple through limiting grooves (37). The sidewall of the rotating block (35) is provided with a push rod (36). The push rod (36) is away from the rotating block. The end of the rotating block (35) passes through the second slide groove (38) and is located outside the fixture (1); the inner side wall of the fixture (1) is provided with a limiting ring (16), the end of the cover (14) contacts the limiting ring (16), and multiple fixing bolts (15) are provided on the side walls of the fixture (1) and the cover (14); the end cap of the cover (14) is provided with a through hole (12); the bottom of the fixture (1) is provided with a support plate (6), and the top of the support plate (6) is detachably connected to the bottom of the fixture (1); The top of the support plate (6) is provided with a fixing block (7), and the top of the fixing block (7) is provided with a fixing groove (9) with openings at both ends and the top. At least two fixing mechanisms are provided along the length of the fixing groove (9). The top of the fixing block (7) is also provided with two strip-shaped grooves (29) with openings at the top. The two strip-shaped grooves (29) are located on both sides of the fixing groove (9). A translation mechanism is provided in the two strip-shaped grooves (29). The top of the translation mechanism is provided with a U-shaped rod (8), and the top of the U-shaped rod (8) is provided with a notch. The notch is located directly above the fixing groove (9). A guide device is provided in the notch. The guiding device includes a translation mechanism two, a translation block (25), a conduit (11), a folding plate (31), and multiple infrared emitters (32); the translation block (25) is sleeved on the translation mechanism two, the conduit (11) is obliquely inserted through the translation block (25), and the outer wall of the conduit (11) is threadedly connected to the translation block (25); the folding plate (31) is fixedly sleeved on the outer wall of the conduit (11), and multiple infrared emitters (32) are installed on the side wall of the folding plate (31) with equal arc lengths centered on the conduit (11); the multiple infrared emitters (32) and the conduit (11) form a fixed angle, so that the multiple infrared emitters (32) must have a converging irradiation point; thus, by rotating the conduit (11) to adjust its height, its irradiation convergence point is at the tail vein position, so that the outlet end of the conduit (11) is aligned with the mouse tail vein; The folded plate (31) consists of a flat segment and two inclined segments. The two inclined segments of the folded plate (31) are mirror-symmetrically installed at both ends of the flat segment, and the angle between the inclined segments and the flat segment of the folded plate (31) is an obtuse angle. Each of the two inclined segments of the folded plate (31) is equipped with a camera (39). The second translation mechanism includes a stepper motor (17), a second bearing (26), and a second threaded rod (18); the stepper motor (17) and the second bearing (26) are fixedly connected to the two side walls of the notch, and the two ends of the second threaded rod (18) are fixedly connected to the output end of the stepper motor (17) and the second bearing (26), respectively; the translation block (25) is sleeved on the second threaded rod (18).

2. The video-guided mouse tail vein puncture device according to claim 1, characterized in that: The top of the fixing block (7) is also provided with a top-opening groove (23); the fixing mechanism includes a rubber block (19), a spring (21), two connecting rods (20) and a lever (22); the end of the spring (21) is fixedly connected to the side wall of the fixing groove (9), and the other end of the spring (21) is fixedly connected to the rubber block (19); the side wall of the rubber block (19) connected to the spring (21) is also fixedly connected to the ends of the two connecting rods (20), the two connecting rods (20) are located on both sides of the spring (21), and the ends of the two connecting rods (20) away from the rubber block (19) are located in the groove (23) and fixedly connected to the side wall of the lever (22).

3. The video-guided mouse tail vein puncture device according to claim 1, characterized in that: The translation mechanism includes a servo motor (30), a threaded rod (28), a slider (27), and a bearing (24). The servo motor (30) and the bearing (24) are fixedly connected to the two end sidewalls of the groove, respectively. The two ends of the threaded rod (28) are fixedly connected to the output end of the servo motor (30) and the bearing (24), respectively. The slider (27) is sleeved on the threaded rod (28), and the bottom of the U-shaped rod (8) is fixedly connected to the sliders (27) of the two translation mechanisms.

4. The video-guided mouse tail vein puncture device according to claim 1, characterized in that: Multiple light strips (33) are provided on both sides of the fixing groove (9).

5. The video-guided mouse tail vein puncture device according to claim 1, characterized in that: The rotating block (35) is provided with a plurality of ventilation holes (34) that penetrate the rotating block (35).

6. The video-guided mouse tail vein puncture device according to claim 1, characterized in that: A handle (13) is fixedly provided on the side wall of the cover (14).

7. The video-guided mouse tail vein puncture device according to claim 1, characterized in that: The side wall of the support plate (6) is provided with an information transmission port (5).

Images