Mouse caudal vein device

Abstract

The invention relates to the technical field of mouse caudal vein injection, and discloses a mouse caudal vein device which comprises a cystosepiment, an illuminating lamp is arranged on one side of the top of the cystosepiment, a mouse fixator is embedded in the top of the cystosepiment, a fixing rod is fixedly connected to one side of the mouse fixator, a sleeve is fixedly connected to the fixing rod, and a mounting ring is slidably connected to the interior of the sleeve. A mounting rod is fixedly connected to one side of the mounting ring, a mounting frame is slidably connected to the bottom of the mounting rod, a limiting frame is fixedly connected to one end of the mounting frame, a transmission rod is rotatably connected to the top of the limiting frame, a fixing shaft is fixedly connected to the end, away from the limiting frame, in the mounting frame, and a constant force spring is fixedly connected between the fixing shaft and the transmission shaft. According to the mouse caudal vein device, the needle head can be inserted into the mouse caudal vein at a constant speed for intravenous injection, and the problem that injection fails due to the fact that an injection worker cannot prick the needle at a constant speed and pricks the needle too shallow or too deep easily is solved.

Description

Technical Field

[0001] The invention relates to the technical field of mouse tail vein injection, in particular to a mouse tail vein device. Background Art

[0002] Mice, also known as white mice, are mammals of the genus Muridae in the order Rodentia. Mice are numerous, their gene sequences are similar to those of humans, and the breeding methods of purebred mice have formed a fixed process after a century of exploration. The bred mice have almost no individual differences. They are widely used in experiments and inspections on the safety, toxicity and efficacy of food, cosmetics, drugs, biological products, industrial products, medicine and life sciences.

[0003] In various basic medical research, in order to observe the pharmacodynamics and toxicology of drugs and new compounds; in the etiology, pathogenesis and pathology research of diseases, in order to observe the body function, metabolism and morphological changes of animals, it is necessary to adopt a certain administration method for experimental animals, and mouse tail vein injection is one of the most common methods;

[0004] Mouse tail vein injection refers to injecting the drug into the lateral vein of the mouse's tail through a syringe. However, during the mouse tail vein injection, the mouse may have a stress response of moving around, which can easily lead to injection failure. Therefore, during the mouse tail vein injection, a fixator is needed to fix the mouse. However, even after the mouse is fixed, the injection personnel cannot insert the needle at a uniform speed, which may cause the needle to be inserted too shallowly or too deeply, resulting in injection failure. For this reason, we propose a mouse tail vein device. Summary of the invention

[0005] The object of the present invention is to provide a mouse tail vein device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a mouse tail vein device, comprising a foam board, a lighting lamp is provided on one side of the top of the foam board, a mouse fixer is embedded on the top of the foam board, and a fixing rod is fixedly connected to one side of the mouse fixer, a sleeve is fixedly connected to the fixing rod, a mounting ring is slidably connected in the sleeve, a mounting rod is fixedly connected to one side of the mounting ring, a mounting frame is slidably connected to the bottom of the mounting rod, one end of the mounting frame is fixedly connected to a limiting frame, a transmission rod is rotatably connected to the top of the limiting frame, a pulley D is rotatably connected in the limiting frame, and a transmission shaft is fixedly connected to the top of the pulley D;

[0007] A fixed shaft is fixedly connected to one end of the mounting frame away from the limiting frame, and a constant force spring is fixedly connected between the fixed shaft and the transmission shaft.

[0008] Preferably, a pulley C is rotatably connected inside the limiting frame, and the top of the pulley C is fixedly connected to the bottom end of the transmission rod, and a transmission belt B is provided between the pulley C and the pulley D.

[0009] Preferably, a pulley A and a pulley B are rotatably connected to one end of the top of the mounting frame close to the limiting frame, a transmission belt A is provided between the pulleys A and B, and a driving gear is fixedly connected to the top of the pulley B.

[0010] Preferably, a plurality of tooth grooves are provided on a side of the mounting rod close to the driving gear, and the tooth grooves are meshed with the driving gear.

[0011] Preferably, a plurality of fixedly connected limit rods are installed on one side of the mounting ring close to the foam board, and a fixing ring is fixedly connected between the limit rods and one end of the foam board, a reciprocating screw is rotatably connected between the fixing ring and the mounting ring, and a rubber bevel gear is fixedly connected to one end of the reciprocating screw close to the foam board.

[0012] Preferably, a limiting ring is slidably connected between the limiting rods, and the limiting ring is threadedly connected to the reciprocating screw rod, and a sponge pad is embedded in the inner wall of the limiting ring.

[0013] Preferably, the top of the limit frame is fixedly connected to a connecting frame, the transmission rod is located between the limit frame and the connecting frame, and the top of the transmission rod is rotatably connected to the inner top wall of the connecting frame, the bottom of the limit frame is rotatably connected to a rotating handle, and the top of the rotating handle is fixedly docked with the pulley D.

[0014] Preferably, a power controller is fixedly connected to a side of the top of the foam board away from the mouse fixer, and an electric wire is fixedly connected between the power controller and the lighting lamp.

[0015] Preferably, a fastening ring is slidably connected inside the mouse fixator, and a knob is threadedly connected to the top of the fastening ring.

[0016] Preferably, a mounting groove is provided on one side of the top of the foam board close to the mouse holder, and the lighting lamp is located in the mounting groove, a light-transmitting film is fixedly connected to the top of the mounting groove, and a plurality of fixing frames for fixing wires are provided at the bottom of the foam board.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention utilizes a rotating shaft to drive the pulley D to rotate, and at this time, the pulley D is used to drive the transmission shaft to rotate, and the constant force spring is wound. Then, the needle tube is held and the needle tube is attached to the surface of the transmission rod, and then the handle is released. At this time, the constant force spring rebounds, and drives the transmission shaft and the pulley D to rotate. At this time, the pulley CD drives the pulley C and the transmission rod to rotate at a uniform speed through the transmission belt B, and then the needle tube is pushed following the rotation of the outer wall of the transmission rod. At this time, since the outer wall of the needle tube is attached to the transmission rod, the needle can be uniformly inserted into the mouse tail vein for intravenous injection during acupuncture, avoiding the problem that the injection personnel cannot insert the needle at a uniform speed, which easily leads to the problem of too shallow or too deep acupuncture, thereby causing injection failure;

[0019] 2. In the process of intravenous injection, the pulley D can drive the driving gear to rotate through the cooperation of the transmission shaft, the pulley A, the transmission belt A and the pulley B during the rotation of the pulley D. During the rotation of the driving gear, the entire mounting frame can be driven to move toward the sleeve. At this time, during the needle insertion process, the needle can be slowly parallel to the mouse tail vein, which is convenient for the needle to penetrate deeply along the mouse tail vein, thereby improving the success rate of intravenous injection and avoiding the problem that the needle directly pierces the mouse tail vein after the needle is inserted into the mouse tail vein because it is not parallel to the vein in time, resulting in the failure of intravenous injection. This further improves the auxiliary function of the device for mouse tail vein injection;

[0020] 3. The present invention allows the sponge pad to absorb a certain amount of alcohol, and then the mouse tail is placed in the sleeve, and then the mounting ring and the fixing ring are manually controlled to move along the mouse tail. Since the root of the mouse tail is relatively thick, when the fixing ring is close to the root of the mouse tail, it can cooperate with the mounting ring to fix the mouse tail. In this process, friction occurs between the rubber bevel gear and the mouse tail, driving the reciprocating screw to rotate, and the reciprocating screw is used to drive the limiting ring to move. At this time, the sponge pad that moves with the limiting ring can wipe the mouse tail with alcohol to expand the mouse tail vein, so that the injection personnel can better determine the position of the mouse tail vein, which is convenient for improving the success rate of the mouse tail vein injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the bottom structure of the foam board of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the mouse fixer of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal component structure of the casing of the present invention;

[0025] Figure 5This is a schematic diagram of the mounting frame structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the mounting frame of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the limiting frame of the present invention;

[0028] Figure 8 for Figure 2 A schematic diagram of the enlarged structure of area A shown;

[0029] Fig. 9 for Figure 4 Schematic diagram of the enlarged structure of area B is shown.

[0030] In the figure: 1. foam board; 11. mounting groove; 12. fixing frame; 13. light-transmitting film; 2. lighting lamp; 21. power controller; 22. electric wire; 3. mouse fixer; 31. fastening ring; 32. knob; 33. fixing rod; 4. sleeve; 41. mounting ring; 411. mounting rod; 412. tooth groove; 42. limiting rod; 43. fixing ring; 44. reciprocating screw rod; 45. rubber bevel gear; 5. limiting ring; 51. sponge pad; 6. mounting frame; 61. pulley A; 62. pulley B; 63. transmission belt A; 64. driving gear; 7. limiting frame; 71. connecting frame; 72. transmission rod; 73. pulley C; 74. pulley D; 75. transmission belt B; 76. transmission shaft; 77. handle; 8. fixed shaft; 81. constant force spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-9 The present invention provides a technical solution: a mouse tail vein device, comprising a foam board 1, a mounting groove 11 is provided on one side of the top of the foam board 1 close to the mouse holder 3, and a lighting lamp 2 is located in the mounting groove 11, a light-transmitting film 13 is fixedly connected to the top of the mounting groove 11, and a plurality of fixing frames 12 for fixing wires 22 are provided at the bottom of the foam board 1;

[0033] A lighting lamp 2 is provided on one side of the top of the foam board 1 , a power controller 21 is fixedly connected to one side of the top of the foam board 1 away from the mouse holder 3 , and an electric wire 22 is fixedly connected between the power controller 21 and the lighting lamp 2 .

[0034] Furthermore, a groove is provided on the top of the foam board 1 for limiting the position of the mouse holder 3, and spikes are provided at both ends of the fixing frame 12, which can be used to pierce the foam board 1 to fix the fixing frame 12, and the fixing frame 12 is used to limit the position of the wire 22 so that the wire 22 can be attached to the foam board 1, and the light-transmitting film 13 can protect the illuminating lamp 2 without blocking the light of the illuminating lamp 2;

[0035] Furthermore, the power controller 21 has a built-in power supply. The button on the power controller 21 can be used to control the lighting lamp 2 to be turned on and off. The wire 22 can be used to transmit the power of the power supply in the power controller 21 to the lighting lamp 2, so that the lighting lamp 2 lights up. The lighting lamp 2 can emit yellow light, and the yellow light can enhance the visibility of the mouse's tail vein and reduce the mouse's stress. At the same time, the warm color of the yellow light can protect the operator's eyesight.

[0036] Combined with Figure 1 and Figure 3 As shown, a mouse holder 3 is embedded on the top of the foam board 1, and a fixing rod 33 is fixedly connected to one side of the mouse holder 3. A fastening ring 31 is slidably connected inside the mouse holder 3, and a knob 32 is threadedly connected to the top of the fastening ring 31.

[0037] Furthermore, when fixing a mouse, the mouse is placed in the mouse fixer 3, and the mouse tail is extended from the hole groove of the mouse fixer 3 near one end of the sleeve 4, and then the knob 32 is turned to contract the fastening ring 31 to complete the fixation of the mouse.

[0038] Combined with Figure 1 , Figure 3 , Figure 4 and Fig. 9 As shown, a sleeve 4 is fixedly connected to the fixing rod 33, a mounting ring 41 is slidably connected inside the sleeve 4, a mounting rod 411 is fixedly connected to one side of the mounting ring 41, a plurality of tooth grooves 412 are provided on the side of the mounting rod 411 close to the driving gear 64, and the tooth grooves 412 and the driving gear 64 are meshed with each other, a plurality of fixedly connected limiting rods 42 are installed on the side of the mounting ring 41 close to the foam board 1, and a fixing ring 43 is fixedly connected between the limiting rods 42 and one end of the foam board 1, a reciprocating screw rod 44 is rotatably connected between the fixing ring 43 and the mounting ring 41, and a rubber bevel gear 45 is fixedly connected to one end of the reciprocating screw rod 44 close to the foam board 1;

[0039] The limiting rods 42 are slidably connected with the limiting ring 5 , and the limiting ring 5 is threadedly connected with the reciprocating screw rod 44 . A sponge pad 51 is embedded in the inner wall of the limiting ring 5 .

[0040] Furthermore, the inner diameter of the mounting ring 41 is smaller than the inner diameter of the fixing ring 43. When performing intravenous injection on the mouse tail, the mouse tail is inserted between the mounting ring 41 and the fixing ring 43, and then the fixing ring 43 is manually pushed. Since the mouse tail becomes thicker as it approaches the root, when the mounting ring 41 and the fixing ring 43 move, the fixing ring 43 can be used to fix the root of the mouse tail, and the mounting ring 41 can be used to fix the middle section of the mouse tail. As the mounting ring 41 and the fixing ring 43 move along the mouse tail, the rubber bevel gear 45 will contact the mouse tail. The rubber bevel gear 45 drives the reciprocating screw rod 44 to rotate by the movement, so that the mouse tail can be fixed and limited while being wiped with alcohol.

[0041] Furthermore, before performing a tail vein injection on a mouse, the sponge pad 51 is soaked in alcohol and then embedded in the inner wall of the limiting ring 5. Then, during the rotation of the reciprocating screw 44, the limiting ring 5 can be driven to move back and forth along the reciprocating screw 44 and the limiting rod 42. During the back and forth movement of the limiting ring 5, the sponge pad 51 soaked in alcohol can be used to wipe the mouse's tail. While disinfecting the mouse's tail, the mouse's tail vein can be expanded to facilitate subsequent intravenous injections.

[0042] Combined with Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the bottom of the mounting rod 411 is slidably connected to the mounting frame 6, and the top end of the mounting frame 6 close to the limiting frame 7 is rotatably connected to the pulley A61 and the pulley B62, respectively. A transmission belt A63 is provided between the pulley A61 and the pulley B62, and the top of the pulley B62 is fixedly connected to a driving gear 64. One end of the mounting frame 6 is fixedly connected to the limiting frame 7, and the top of the limiting frame 7 is rotatably connected to the transmission rod 72, and the limiting frame 7 is rotatably connected to the pulley D74, and the top of the pulley D74 is fixedly connected to A transmission shaft 76 is connected, and a pulley C73 is rotatably connected inside the limit frame 7, and the top of the pulley C73 is fixedly docked with the bottom end of the transmission rod 72, and a transmission belt B75 is provided between the pulley C73 and the pulley D74, and the top of the limit frame 7 is fixedly connected to the connecting frame 71, the transmission rod 72 is located between the limit frame 7 and the connecting frame 71, and the top of the transmission rod 72 is rotatably connected to the inner top wall of the connecting frame 71, and the bottom of the limit frame 7 is rotatably connected to a rotating handle 77, and the top of the rotating handle 77 is fixedly docked with the pulley D74.

[0043] Furthermore, before performing tail vein injection of mice, the pulley D74 is driven to rotate by the rotating handle 77. During the rotation of the pulley D74, the pulley C73 can be driven to rotate through the transmission belt B75, and the transmission rod 72 can be driven to rotate by the pulley C73. At the same time, during the rotation of the pulley D74, the pulley A61 can also be driven to rotate through the transmission shaft 76. At this time, the rotating pulley A61 can drive the pulley B62 to rotate through the transmission belt A63. At this time, the pulley B62 drives the driving gear 64 to rotate. During the rotation of the driving gear 64, it can cooperate with the tooth groove 412 on the mounting rod 411 to move the mounting frame 6 toward the end of the mounting rod 411 away from the sleeve 4. When the mounting frame 6 moves to one end of the mounting rod 411, it can be prepared for the tail vein injection of mice.

[0044] Combined with Figure 6 and Figure 7 As shown, a fixed shaft 8 is fixedly connected to one end of the mounting frame 6 away from the limiting frame 7 , and a constant force spring 81 is fixedly connected between the fixed shaft 8 and the transmission shaft 76 .

[0045] Furthermore, during the rotation of the pulley D74, the transmission shaft 76 can be used to tighten the constant force spring 81. When the mounting frame 6 moves to one end of the mounting rod 411, the needle tube of the injection needle is fitted on the transmission rod 72, and then the needle tube is manually clamped. Then the handle 77 is released, and the constant force spring 81 rebounds, which will drive the transmission shaft 76 to rotate in the opposite direction. At this time, the transmission shaft 76 will drive the pulley D74 to transmit, and the pulley D74 will drive the pulley C73 to rotate through the transmission belt B75. At this time, the pulley C73 drives the transmission rod 72 to rotate. At this time, the transmission rod 72 will rotate at a uniform speed. At this time, since the outer wall of the needle tube is in contact with the transmission rod 72, the handheld needle tube can be moved along the transmission belt. The rotation speed of the movable rod 72 uniformly inserts the needle into the tail vein of the mouse. At the same time, during the process of the needle being inserted into the tail of the mouse, the transmission shaft 76 can also drive the pulley A61 to rotate, and the pulley A61 will again drive the pulley B62 to rotate through the transmission belt A63. At this time, the pulley B62 will again drive the driving gear 64 to rotate, and at this time the driving gear 64 is in a reverse rotation state. During the rotation of the driving gear 64, it can cooperate with the tooth groove 412 on the mounting rod 411 to drive the mounting frame 6 to move along the mounting rod 411 toward the sleeve 4. At this time, the injection needle for the mouse tail vein injection will tend to be parallel to the vein, and then the injection in the syringe can be injected into the mouse tail vein to complete the injection.

[0046] Working principle: first, put the mouse into the mouse holder 3, and let the mouse tail extend out from the hole groove of the mouse holder 3 near one end of the sleeve 4, then turn the knob 32 to shrink the fastening ring 31 to complete the fixation of the mouse, then clamp the mouse holder 3 on the foam board 1, then control the lighting lamp 2 to light up through the power controller 21, then put the mouse tail on the light-transmitting film 13, then soak the sponge pad 51 with alcohol, and then fit it on the inner wall of the limiting ring 5;

[0047] Then, the mouse tail is inserted between the mounting ring 41 and the fixing ring 43, and then the fixing ring 43 is manually pushed. Since the mouse tail becomes thicker as it approaches the root, the fixing ring 43 can be used to fix the root of the mouse tail when the mounting ring 41 and the fixing ring 43 move, and the mounting ring 41 can be used to fix the middle section of the mouse tail. As the mounting ring 41 and the fixing ring 43 move along the mouse tail, the rubber bevel gear 45 will contact the mouse tail. The rubber bevel gear 45 drives the reciprocating screw rod 44 to rotate by the movement. During the rotation of the reciprocating screw rod 44, the limiting ring 5 can be driven to move back and forth along the reciprocating screw rod 44 and the limiting rod 42. During the back and forth movement of the limiting ring 5, the mouse tail can be wiped with a sponge pad 51 soaked in alcohol to disinfect the mouse tail and dilate the mouse tail vein at the same time.

[0048] At this time, the handle 77 drives the pulley D74 to rotate. During the rotation process, the pulley D74 can drive the pulley C73 to rotate through the transmission belt B75, and the pulley C73 drives the transmission rod 72 to rotate. At the same time, during the rotation process of the pulley D74, the pulley A61 can also be driven to rotate through the transmission shaft 76. At this time, the rotating pulley A61 can drive the pulley B62 to rotate through the transmission belt A63. At this time, the pulley B62 drives the driving gear 64 to rotate. During the rotation process, the driving gear 64 can cooperate with the tooth groove 412 on the installation rod 411 to move the installation frame 6 toward the end of the installation rod 411 away from the sleeve 4. When the installation frame 6 moves to one end of the installation rod 411, it is ready to perform the mouse tail vein injection.

[0049] During the rotation of the pulley D74, the transmission shaft 76 can be used to tighten the constant force spring 81. When the mounting frame 6 moves to one end of the mounting rod 411, the needle tube of the injection needle is attached to the transmission rod 72, and then the needle tube is manually clamped. Then the handle 77 is released, and the constant force spring 81 rebounds, which will drive the transmission shaft 76 to rotate in the opposite direction. At this time, the transmission shaft 76 will drive the pulley D74 to transmit, and the pulley D74 will drive the pulley C73 to rotate through the transmission belt B75. At this time, the pulley C73 drives the transmission rod 72 to rotate, and the transmission rod 72 will rotate at a uniform speed. At this time, since the outer wall of the needle tube is attached to the transmission rod 72, the handheld needle tube can be moved along the transmission The rotation speed of rod 72 inserts the needle into the mouse tail vein at a uniform speed. At the same time, during the process of the needle being inserted into the mouse tail, the transmission shaft 76 can also drive the pulley A61 to rotate, and the pulley A61 will again drive the pulley B62 to rotate through the transmission belt A63. At this time, the pulley B62 will again drive the driving gear 64 to rotate, and at this time the driving gear 64 is in a reverse rotation state. During the rotation of the driving gear 64, it can cooperate with the tooth groove 412 on the mounting rod 411 to drive the mounting frame 6 to move along the mounting rod 411 toward the sleeve 4. At this time, the injection needle for mouse tail vein injection will tend to be parallel to the vein, and then the injection in the syringe can be injected into the mouse tail vein to complete the injection work.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mouse tail vein device, comprising a foam board (1), a lighting lamp (2) being provided on one side of the top of the foam board (1), a mouse holder (3) being embedded on the top of the foam board (1), and a fixing rod (33) being fixedly connected to one side of the mouse holder (3), characterized in that: The fixing rod (33) is fixedly connected with a sleeve (4), a mounting ring (41) is slidably connected inside the sleeve (4), a mounting rod (411) is fixedly connected to one side of the mounting ring (41), a mounting frame (6) is slidably connected to the bottom of the mounting rod (411), one end of the mounting frame (6) is fixedly connected to a limiting frame (7), the top of the limiting frame (7) is rotatably connected to a transmission rod (72), a belt pulley D (74) is rotatably connected inside the limiting frame (7), and the top of the belt pulley D (74) is fixedly connected to a transmission shaft (76); A fixed shaft (8) is fixedly connected to one end of the mounting frame (6) away from the limiting frame (7), and a constant force spring (81) is fixedly connected between the fixed shaft (8) and the transmission shaft (76).

2. The mouse tail vein device according to claim 1, characterized in that: A pulley C (73) is rotatably connected inside the limiting frame (7), and the top of the pulley C (73) is fixedly connected to the bottom end of the transmission rod (72). A transmission belt B (75) is provided between the pulley C (73) and the pulley D (74).

3. The mouse tail vein device according to claim 1, characterized in that: A pulley A (61) and a pulley B (62) are rotatably connected at one end of the top of the mounting frame (6) close to the limiting frame (7), a transmission belt A (63) is provided between the pulley A (61) and the pulley B (62), and a driving gear (64) is fixedly connected to the top of the pulley B (62).

4. The mouse tail vein device according to claim 3, characterized in that: A plurality of tooth grooves (412) are provided on one side of the mounting rod (411) close to the driving gear (64), and the tooth grooves (412) and the driving gear (64) are meshed with each other.

5. The mouse tail vein device according to claim 1, characterized in that: A plurality of fixedly connected limit rods (42) are installed on one side of the mounting ring (41) close to the foam plate (1), and a fixed ring (43) is fixedly connected between the limit rods (42) and one end close to the foam plate (1), a reciprocating screw rod (44) is rotatably connected between the fixed ring (43) and the mounting ring (41), and a rubber bevel gear (45) is fixedly connected to one end of the reciprocating screw rod (44) close to the foam plate (1).

6. The mouse tail vein device according to claim 5, characterized in that: The limiting rods (42) are slidably connected to a limiting ring (5), and the limiting ring (5) is threadedly connected to the reciprocating screw rod (44), and a sponge pad (51) is embedded in the inner wall of the limiting ring (5).

7. The mouse tail vein device according to claim 1, characterized in that: The top of the limiting frame (7) is fixedly connected to a connecting frame (71); the transmission rod (72) is located between the limiting frame (7) and the connecting frame (71); the top of the transmission rod (72) is rotatably connected to the inner top wall of the connecting frame (71); the bottom of the limiting frame (7) is rotatably connected to a rotating handle (77); and the top of the rotating handle (77) is fixedly connected to a pulley D (74).

8. The mouse tail vein device according to claim 1, characterized in that: A power controller (21) is fixedly connected to the top of the foam board (1) at one side away from the mouse fixer (3), and an electric wire (22) is fixedly connected between the power controller (21) and the lighting lamp (2).

9. The mouse tail vein device according to claim 1, characterized in that: A fastening ring (31) is slidably connected inside the mouse fixer (3), and a knob (32) is threadedly connected to the top of the fastening ring (31).

10. The mouse tail vein device according to claim 8, characterized in that: A mounting groove (11) is provided on one side of the top of the foam board (1) close to the mouse holder (3), and the lighting lamp (2) is located in the mounting groove (11). A light-transmitting film (13) is fixedly connected to the top of the mounting groove (11), and a plurality of fixing frames (12) for fixing electric wires (22) are provided at the bottom of the foam board (1).

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