Mouse caudal vein injection auxiliary device

Abstract

The invention relates to the technical field of medical experiment equipment, and discloses a mouse tail intravenous injection auxiliary device which comprises a body fixing assembly and an injection platform, and the injection platform is further provided with a tail fixing assembly for fixing the tail of a mouse; the tail fixing assembly comprises a first clamping mechanism for clamping the tail root of a mouse, a second clamping mechanism for clamping the tail tip of the mouse, and a transmission mechanism for driving the first clamping mechanism and the second clamping mechanism to rotate at the same time in the same direction. The first clamping mechanism is rotationally installed at the end, close to the body fixing assembly, of the injection platform, and the second clamping mechanism is rotationally installed at the end, away from the body fixing assembly, of the injection platform. The invention relates to a mouse tail intravenous injection auxiliary device, and aims to provide the mouse tail intravenous injection auxiliary device which can fix the body and the tail of a mouse at the same time, and when the tail of the mouse is rotated to select a proper vein, the body of the mouse can rotate along with the part to avoid vein distortion, so that the probability of successful injection is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of medical experimental equipment, and in particular relates to a mouse tail vein injection auxiliary device. Background Art

[0002] Mouse tail vein injection is a crucial experimental technique in animal research, commonly used for modeling and drug administration for various blood-borne diseases. Mice have three tail veins: a deep, thin one on the back and a shallow, thicker one on the left and right sides. Traditionally, tail vein injections are performed by immobilizing the mouse, exposing its tail. The tail is then wiped with a 75% ethanol solution or heated with a heater to fully dilate the tail vein. Using a magnifying glass and / or light, the vein is located, and the needle is inserted at a distance of one-quarter or one-third of the way from the tip of the tail. If a white bump appears, this indicates the needle has not penetrated the vessel. In this case, the needle should be moved toward the front (cephalad) of the tail and repeated until a successful injection is achieved. Traditional tail vein injections are not only extremely difficult and have a high failure rate, but also significantly increase the difficulty and instability of mouse experiments, causing significant trouble and expense for researchers.

[0003] Currently, the mouse fixation devices on the market usually only fix the mouse's body. During the injection, the experimenter manually controls the tail. When selecting the left and right veins of the mouse, the mouse's tail will be rotated. However, the mouse's body is fixed at this time and cannot follow the rotation, which will cause the vein to twist. At this time, the injection will greatly increase the probability of failure.

[0004] In view of this, the inventors conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Summary of the Invention

[0005] The purpose of the present invention is to provide a mouse tail vein injection assisting device, which can fix the mouse's body and tail at the same time. When the mouse's tail is rotated to select a suitable vein, the mouse's body can be rotated to follow the location, avoiding vein twisting, thereby increasing the probability of successful injection.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0007] A mouse tail vein injection auxiliary device includes a body fixing component for fixing the mouse body and an injection platform. The injection platform is also provided with a tail fixing component for fixing the mouse tail. The body fixing component can rotate simultaneously and in the same direction as the tail fixing component; the tail fixing component includes a first clamping mechanism for clamping the base of the mouse tail, a second clamping mechanism for clamping the tip of the mouse tail, and a transmission mechanism for driving the first clamping mechanism and the second clamping mechanism to rotate simultaneously and in the same direction; the first clamping mechanism is rotatably mounted on one end of the injection platform close to the body fixing component, and the second clamping mechanism is rotatably mounted on one end of the injection platform near the body fixing component; the height of the second clamping mechanism is lower than the height of the first clamping mechanism; the first clamping mechanism and the body fixing component are detachably connected.

[0008] Furthermore, the first clamping mechanism includes a clamping sleeve, a first airbag connected to the inner wall of the clamping sleeve, and a first connecting shaft located at one end of the clamping sleeve and rotatably connected to the injection platform. The clamping sleeve is annular and has a first clearance groove formed on the clamping sleeve for the mouse tail to be clamped into, and a second clearance groove formed on the first airbag for the mouse tail to be clamped into; the first connecting shaft has a first clamping groove formed on the first connecting shaft for the mouse tail to be clamped into; and a first connecting sleeve is formed on the injection platform for mounting the first connecting shaft, and the first connecting shaft has three clearance grooves formed on the first connecting shaft for the mouse tail to be clamped into. By wrapping and clamping the base of the mouse tail with the airbag, the veins in the mouse tail can be fully dilated during injection, making it easier to observe the veins.

[0009] Furthermore, the second clamping mechanism includes a clamping unit, a supporting platform for placing the mouse tail, and a second connecting shaft rotatably connected to the injection platform; a second connecting sleeve is formed on the injection platform to install the second connecting shaft; the clamping unit includes a pressing wheel for pressing the mouse tail on the supporting platform, a wheel frame for installing the pressing wheel, and a fixing frame, the fixing frame includes a support column, a connecting plate vertically connected to the top of the support column, and a plug-in block vertically connected to the bottom of the support column, the outer side of the supporting platform is formed with a plug-in slot that cooperates with the plug-in block, the top of the wheel frame is provided with a first sleeve, the bottom of the connecting plate is provided with a second sleeve that slides with the first sleeve, and a spring is further provided between the first sleeve and the second sleeve; a second slot for the mouse tail to be clamped is formed on the second connecting shaft, and a fourth clearance slot for the mouse tail to be clamped is formed on the second connecting sleeve. The second clamping mechanism makes it more convenient to fix the tip of the mouse tail.

[0010] Furthermore, the injection platform is further provided with a guide chute, extending from the upper surface of the injection platform to be flush with the bottom of the second clamping groove. The guide chute prevents the mouse's tail from being significantly bent during its extension to the second clamping mechanism, thereby preventing damage to the mouse's tail.

[0011] Furthermore, the transmission mechanism includes a transmission shaft rotatably connected to the injection platform, a first gear located at one end of the transmission shaft and engaged with the first clamping mechanism, and a second gear located at the other end of the transmission shaft and engaged with the second clamping mechanism. The first connecting sleeve is formed with a first transmission tooth that meshes with the first gear, and the second connecting sleeve is formed with a second transmission tooth that meshes with the second gear. The transmission mechanism also includes a control lever that rotates the transmission shaft and is rotatably mounted on the injection platform. A first reversing tooth is provided in the middle of the transmission shaft, a second reversing tooth is provided at one end of the control lever that meshes with the first reversing tooth, and a knob is provided at the other end. The transmission mechanism can control the first and second clamping mechanisms to rotate simultaneously and in the same direction, thereby preventing twisting of the mouse's tail.

[0012] Furthermore, the body fixing assembly includes a fixing sleeve and a base, wherein the base is provided with a mounting ring for mounting the fixing sleeve, and the fixing sleeve is rotatably mounted within the mounting ring; a second airbag is provided on the inner wall of the fixing sleeve, and the second airbag is annular; an entrance for the mouse body is formed at one end of the fixing sleeve near the second clamping mechanism, and a bottom wall is formed at the other end, and a top cover is provided at the entrance, and a fifth clearance groove is formed on the top cover for the mouse tail to be inserted, and a plurality of air holes are formed on the bottom wall; a limiting slider is formed on the inner wall of the top cover to slide with the fixing sleeve, and a limiting groove is formed on the outer wall of the fixing sleeve to cooperate with the limiting slider; a plurality of plug holes are formed on the end of the top cover near the second clamping mechanism, and a plug column is formed on the clamping sleeve to cooperate with the plug holes. Rotating the fixing sleeve within the mounting ring allows the mouse body to rotate with the mouse tail, thereby preventing distortion between the mouse tail and body.

[0013] Furthermore, the torso fixation assembly includes a mouth guard rotatably mounted on the bottom wall. The mouth guard comprises a conical protective sleeve and a control screw threadedly connected to the bottom wall. The outer wall of the conical protective sleeve is formed with multiple ventilation holes. The outer end of the control screw is provided with a rotary handle. The mouth guard prevents the second airbag from blocking the mouse's mouth and nose when inflated.

[0014] Furthermore, the mounting ring is hinged to the base; the base is also provided with a support frame for supporting the fixing sleeve. The mounting ring is hinged to the base to facilitate placing the mouse into the fixing sleeve.

[0015] Furthermore, one end of the base is provided with a placement platform for the injection platform, and the injection platform is slidably placed on the placement platform. The injection platform is provided with multiple guide posts on the end near the base, and the base is formed with guide holes that are slidably connected to the guide posts. Sliding the injection platform onto the placement platform allows for more rapid connection of the first clamping mechanism to the top cover.

[0016] Furthermore, a light assembly is slidably mounted on the injection platform. The light assembly includes a light-emitting element and a mounting box for the light-emitting element. A slide groove is formed on the injection platform for mounting the mounting box. Limit plates are formed on both sides of the mounting box. A toggle block is located on top of the limit plates. A movable slot is also formed on the injection platform for the toggle block to pass through. The light assembly facilitates observation of the mouse's tail veins.

[0017] After adopting the above structure, the present invention relates to a mouse tail vein injection auxiliary device. Compared with the prior art, this case arranges a tail fixing component for fixing the mouse tail on the injection platform, and the tail injection fixing component includes a first clamping mechanism for fixing the base of the mouse tail and a second clamping mechanism for fixing the tip of the mouse tail. The first clamping mechanism and the second clamping mechanism can be driven to rotate in the same direction at the same time through the transmission mechanism. In this way, when the mouse tail is rotated to select a suitable vein, the vein twisting caused by twisting of the mouse tail can be avoided, thereby greatly reducing the probability of injection failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the first clamping mechanism in the present invention;

[0022] Figure 4 Schematic diagram of the structure of the second clamping mechanism in the present invention;

[0023] Figure 5 for Figure 4 Schematic diagram of the decomposition structure;

[0024] Figure 6 Schematic diagram of the structure of the clamping unit in the present invention;

[0025] Figure 7 for Figure 6 Schematic diagram of the decomposition structure;

[0026] Figure 8 A schematic structural diagram of the fixing assembly of the present invention;

[0027] Figure 9 It is a structural diagram of a fixed sleeve;

[0028] Figure 10 for Figure 9 Schematic cross-section diagram;

[0029] Figure 11 for Figure 9 Schematic diagram of the decomposition;

[0030] Figure 12 Schematic diagram of the structure of the top cover;

[0031] Figure 13 Schematic diagram of the structure of the injection platform;

[0032] Figure 14 It is a structural diagram of the transmission mechanism;

[0033] Figure 15 A schematic diagram of the lighting component.

[0034] The main component symbols are explained as follows: fixing assembly 1, fixing sleeve 11, second airbag 111, inlet 112, bottom wall 113, air hole 1131, limiting slide 114, base 12, mounting ring 121, support frame 122, placement table 123, guide hole 124, top cover 13, fifth make way groove 131, limiting slider 132, plug hole 133, mouth guard 14, conical protective sleeve 141, air vent 1411, control screw 142, handle 1421, injection platform 2, first connecting sleeve 21, third make way groove 211, second connecting sleeve 22, fourth make way groove 221, guide inclined groove 23, guide column 24, slide 25, movable groove 26, tail fixing assembly 3, first clamping mechanism 31, clamping sleeve 311, first make way groove 3111, plug column 3112, first airbag 31 2. second yield groove 3121, first connecting shaft 313, first engaging groove 3131, first transmission tooth 3132, second clamping mechanism 32, clamping unit 321, pressing wheel 3211, wheel frame 3212, first sleeve 32121, fixing frame 3213, support column 32131, connecting plate 32132, plug-in block 32133, second sleeve 32134, spring 3214, supporting platform 322, plug-in groove 3221, second connecting shaft 323, second engaging groove 3231, second transmission tooth 3232, transmission mechanism 33, transmission shaft 331, first reversing tooth 3311, first gear 332, second gear 333, control lever 334, second reversing tooth 3341, knob 3342, lighting assembly 4, light-emitting component 41, mounting box 42, limiting plate 421, toggle block 4211. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts are numbered the same. Implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. In addition, directional terms mentioned in the embodiments, such as "upper," "lower," "top," "bottom," "left," "right," "front," and "back," are merely references to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0036] like Figures 1 to 15 As shown, the present invention relates to a mouse tail vein injection auxiliary device, comprising a body fixing component 1 for fixing the mouse body and an injection platform 2. A tail fixing component 31 for fixing the mouse tail is also provided on the injection platform 2. In order to prevent the mouse tail from twisting when the tail is rotated to select a vein, which may cause the vein to twist, the body fixing component 1 can rotate simultaneously and in the same direction as the tail fixing component 31. Specifically, the tail fixing component 31 includes a first clamping mechanism 31 for clamping the root of the mouse tail, a second clamping mechanism 32 for clamping the tip of the mouse tail, and a transmission mechanism 33 that drives the first clamping mechanism 31 and the second clamping mechanism 32 to rotate simultaneously and in the same direction. The first clamping mechanism 31 is rotatably installed on the injection platform 2 close to the body fixing component 1. At one end of the fixed component 1, the second clamping mechanism 32 is rotatably mounted on one end of the body fixing component 1 of the injection platform 2; the height of the second clamping mechanism 32 is lower than the height of the first clamping mechanism 31. Specifically, when the tip of the mouse's tail is fixed by the second clamping mechanism 32, the tip of the mouse's tail is bent downward by about 30°, which facilitates injection by the injection needle; the first clamping mechanism 31 and the body fixing component 1 are detachably connected. When the first clamping mechanism 31 and the body fixing component 1 are in a disassembled state, the mouse's body can be placed in the body fixing component 1. When the first clamping mechanism 31 and the body fixing component 1 are in a connected state, the tail can drive the mouse's body to rotate while rotating, thereby avoiding twisting between the base of the mouse's tail and the body.

[0037] In this embodiment, the first clamping mechanism 31 includes a clamping sleeve 311, a first air bag 312 connected to the inner wall of the clamping sleeve 311, and a first connecting shaft 313 located at one end of the clamping sleeve 311 and rotatably connected to the injection platform 2. The clamping sleeve 311 is annular, and a first clearance groove 3111 for a mouse tail to be inserted is formed on the clamping sleeve 311. The first air bag 312 extends along the inner wall of the clamping sleeve 311, and the air nozzle of the first air bag 312 passes through the outer wall of the clamping sleeve 311. The first air bag 312 is inflated and deflated by an external inflation device. When the clamping sleeve 311 is full, the clamping sleeve 311 can be filled, and a second clearance groove 3121 for a mouse tail to be inserted is formed on the first air bag 312. The second clearance groove 3121 It extends at least to the center of the clamping sleeve 311, so that the mouse's tail can be wrapped and clamped only after the first airbag 312 is filled with gas. In addition, the base of the mouse's tail is wrapped and clamped by the airbag, so that the veins in the mouse's tail can be fully expanded during injection, making it easier to observe the veins; a first card groove 3131 for the mouse's tail to be inserted is formed on the first connecting shaft 313, and the bottom of the first card groove 3131 is flush with the surface of the injection platform 2; a first connecting sleeve 21 for mounting the first connecting shaft 313 is formed on the injection platform 2, and three makeshift grooves for the mouse's tail to be inserted are formed on the first connecting shaft 313. After the mouse's body is installed in the body fixing component 1, the mouse's tail is inserted from the first makeshift groove 3111, the second makeshift groove 3121 and the third makeshift groove 211.

[0038] In this embodiment, the second clamping mechanism 32 includes a clamping unit 321, a supporting platform 322 for placing the mouse tail, and a second connecting shaft 323 rotatably connected to the injection platform 2; a second connecting sleeve 22 for mounting the second connecting shaft 323 is formed on the injection platform 2; the clamping unit 321 includes a pressing wheel 3211 for pressing the mouse tail on the supporting platform 322, a wheel frame 3212 for mounting the pressing wheel 3211, and a fixing frame 3213, the fixing frame 3213 includes a support column 32131, a connecting plate 32132 vertically connected to the top of the support column 32131, and a plug-in block 32133 vertically connected to the bottom of the support column 32131, a plug-in groove 3221 that cooperates with the plug-in block 32133 is formed on the outer side of the supporting platform 322, and a first sleeve 32121 is provided on the top of the wheel frame 3212 The cam 3231 of the second locking plate 3231 is formed on the second locking plate 3232, and the cam 3232 is locked in the locking plate 3233. The cam 3232 is locked in the locking plate 3233 by the locking cam 3234. When fixing the tip of the mouse's tail, first straighten the tip of the mouse's tail and insert it into the second slot 3231 from the fourth clearance slot 221 , then slowly push the pressing wheel 3211 against the mouse's tail to insert the plug-in block 32133 into the plug-in slot 3221 .

[0039] In this embodiment, the injection platform 2 is further formed with a guide chute 23. The guide chute 23 extends from the upper surface of the injection platform 2 to be flush with the bottom of the second clamping groove 3231. The guide chute 23 prevents the mouse's tail from being significantly bent during its extension to the second clamping mechanism 32, thereby preventing damage to the mouse's tail.

[0040] In this embodiment, the transmission mechanism 33 includes a transmission shaft 331 rotatably connected to the injection platform 2, a first gear 332 located at one end of the transmission shaft 331 and cooperating with the first clamping mechanism 31, and a second gear 333 located at the other end of the transmission shaft 331 and cooperating with the second clamping mechanism 32; a first transmission tooth 3132 meshing with the first gear 332 is formed on the first connecting sleeve 21, and a second transmission tooth 3232 meshing with the second gear 333 is formed on the second connecting sleeve 22; the first transmission tooth 3132 and the second transmission tooth 3232 are both incomplete teeth, and in the first Both the first transmission tooth 3132 and the second transmission tooth 3232 have notches for the mouse tail to engage, and the rotation angles of the first transmission tooth 3132 and the second transmission tooth 3232 are limited to 100°-160° in the left-right direction. The transmission mechanism 33 also includes a control rod 334 that drives the transmission shaft 331 to rotate. The control rod 334 is rotatably mounted on the injection platform 2. The middle portion of the transmission shaft 331 is provided with a first reversing tooth 3311. One end of the control rod 334 is provided with a second reversing tooth 3341 that meshes with the first reversing tooth 3311, and the other end is provided with a knob 3342. When operating to observe the vein, the control rod 334 can be rotated to drive the transmission shaft 331, thereby rotating the veins on the left and right sides of the mouse tail upward to facilitate injection.

[0041] In this embodiment, the body fixing assembly 1 includes a fixing sleeve 11 for fixing the mouse body and a base 12 for installing the fixing sleeve 11. The base 12 is provided with a mounting ring 121 for installing the fixing sleeve 11, and the fixing sleeve 11 is rotatably installed in the mounting ring 121; the inner wall of the fixing sleeve 11 is provided with a second air bag 111, and the second air bag 111 is annular. The air nozzle of the second air bag 111 passes through the outer wall of the fixing sleeve 11, and the second air bag 111 can be inflated by an external inflation device; the fixing sleeve 11 is formed with an entrance 112 for the mouse body to enter at one end close to the second clamping mechanism 32, and a bottom wall 113 is formed at the other end. A top cover 13 is also provided at the entrance 112, and a fifth make way groove 131 is formed on the top cover 13 for the mouse's tail to be inserted into, and a plurality of air holes 1131 are formed on the bottom wall 113; a limiting slider 132 that slides with the fixed sleeve 11 is also formed on the inner wall of the top cover 13, and a limiting slide groove 25114 that cooperates with the limiting slider 132 is formed on the outer wall of the fixed sleeve 11; a plurality of plug-in holes 133 are formed on one end of the top cover 13 close to the second clamping mechanism 32, and a plug-in column 3112 that cooperates with the plug-in hole 133 is formed on the clamping sleeve 311, and there are three plug-in columns 3112 and three plug-in holes 133, and they are arranged in a circular array. During operation, the mouse can be placed with its head facing the entrance 112, and then the top cover 13 can be placed on the entrance 112, and the mouse's tail can be stuck into the fifth clearance groove 131. Then, the plug-in column 3112 of the clamping sleeve 311 is matched with the plug-in hole 133, so that the fixing sleeve 11 can rotate with the second clamping mechanism 32, and finally the second airbag 111 is inflated to wrap and clamp the mouse's body.

[0042] In this embodiment, the torso fixation assembly 1 further includes a mouth guard 14 rotatably mounted on the bottom wall 113. The mouth guard 14 comprises a conical protective sleeve 141 and a control screw 142, which is threadedly connected to the bottom wall 113. The outer wall of the conical protective sleeve 141 is formed with a plurality of vents 1411. The outer end of the control screw 142 is provided with a rotary handle 1421. The mouth guard 14 prevents the second airbag 111 from blocking the mouse's mouth and nose when inflated.

[0043] In this embodiment, the mounting ring 121 is hingedly connected to the base 12; the base 12 is also provided with a support frame 122 that supports the fixed sleeve 11. The mounting ring 121 is hingedly connected to the base 12, so that when inserting the mouse body into the fixed sleeve 11, the mounting sleeve can be rotated upward so that the entrance 112 faces upward, making it easier to place the mouse into the fixed sleeve 11.

[0044] In this embodiment, a placement platform 123 is provided at one end of the base 12 for placing the injection platform 2. The injection platform 2 slides onto the placement platform 123. A plurality of guide posts 24 are provided at the end of the injection platform 2 near the base 12. The base 12 is formed with guide holes 124 that are slidably connected to the guide posts 24. Sliding the injection platform 2 onto the placement platform 123 allows for faster connection of the first clamping mechanism 31 to the top cover 13.

[0045] In this embodiment, a light assembly 4 is also slidably mounted on the injection platform 2. This assembly includes a light-emitting element 41 and a mounting box 42 for mounting the light-emitting element 41. The light-emitting element 41 can be a warm white LED. A slide 25 is formed on the injection platform 2 for mounting the mounting box 42. Limiting plates 421 are formed on either side of the mounting box 42. A toggle block 4211 is positioned at the top of the limiting plates 421. A movable slot 26 is also formed on the injection platform 2 for the toggle block 4211 to pass through. The light assembly 4 facilitates observation of the mouse's tail veins. During operation, the position of the light-emitting element 41 can be adjusted using the toggle block 4211.

[0046] The method of using the present invention is as follows: first, the body of the mouse is placed into the fixed sleeve 11, and the mouth of the mouse is covered with the mouth protection component, then the body of the mouse is wrapped and clamped by the second airbag 111, and the top cover 13 of the fixed sleeve 11 is connected to the first clamping mechanism 31, and then the root and tip of the mouse tail are clamped respectively by the first clamping mechanism 31 and the second clamping mechanism 32, and then the tail vein of the mouse is observed by the light component 4. During the observation process, the first clamping mechanism 31 and the second clamping mechanism 32 can be driven to rotate simultaneously by the transmission mechanism 33, so that the most obvious vein is flipped to the top for easy injection.

[0047] The above describes in detail the mouse tail vein injection assist device provided by the present invention. The description of the specific embodiments is intended only to facilitate understanding of the present invention's methods and core concepts. It should be noted that those skilled in the art will appreciate that various improvements and modifications may be made to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims.

Claims

1. A mouse tail vein injection assisting device, comprising a body fixing component (1) for fixing the mouse body and an injection platform (2), characterized in that: The injection platform (2) is also provided with a tail fixing component (3) for fixing the mouse's tail, and the body fixing component (1) can rotate simultaneously and in the same direction as the tail fixing component (3); the tail fixing component (3) includes a first clamping mechanism (31) for clamping the base of the mouse's tail, a second clamping mechanism (32) for clamping the tip of the mouse's tail, and a transmission mechanism (33) for driving the first clamping mechanism (31) and the second clamping mechanism (32) to rotate simultaneously and in the same direction; the first clamping mechanism (31) is rotatably mounted on one end of the injection platform (2) close to the body fixing component (1), and the second clamping mechanism (32) is rotatably mounted on one end of the injection platform (2) close to the body fixing component (1); the height of the second clamping mechanism (32) is lower than the height of the first clamping mechanism (31); the first clamping mechanism (31) and the body fixing component (1) are detachably connected.

2. The mouse tail vein injection assisting device according to claim 1, characterized in that: The first clamping mechanism (31) includes a clamping sleeve (311), a first air bag (312) connected to the inner wall of the clamping sleeve (311), and a first connecting shaft (313) located at one end of the clamping sleeve (311) and rotatably connected to the injection platform (2). The clamping sleeve (311) is annular, and a first clearance groove (3111) for a mouse tail to be clamped is formed on the clamping sleeve (311), and a second clearance groove (3121) for a mouse tail to be clamped is formed on the first air bag (312); a first clamping groove (3131) for a mouse tail to be clamped is formed on the first connecting shaft (313); a first connecting sleeve (21) for mounting the first connecting shaft (313) is formed on the injection platform (2), and three clearance grooves (211) for a mouse tail to be clamped are formed on the first connecting shaft (21).

3. The mouse tail vein injection assisting device according to claim 2, characterized in that: The second clamping mechanism (32) includes a clamping unit (321), a supporting platform (322) for placing the mouse tail, and a second connecting shaft (323) rotatably connected to the injection platform (2); a second connecting sleeve (22) for mounting the second connecting shaft (323) is formed on the injection platform (2); the clamping unit (321) includes a pressing wheel (3211) for pressing the mouse tail on the supporting platform (322), a wheel frame (3212) for mounting the pressing wheel (3211), and a fixing frame (3213); the fixing frame (3213) includes a support column (32131), a connecting plate (32132) vertically connected to the top of the support column (32131), and a connecting plate (32132) vertically connected to the support column (32131). 1) a plug-in block (32133) at the bottom, a plug-in slot (3221) that cooperates with the plug-in block (32133) is formed on the outer side of the supporting platform (322), a first sleeve (32121) is provided on the top of the wheel frame (3212), a second sleeve (32134) that slides with the first sleeve (32121) is provided at the bottom of the connecting plate (32132), and a spring (3214) is further provided between the first sleeve (32121) and the second sleeve (32134); a second slot (3231) for the mouse tail to be inserted is formed on the second connecting shaft (323), and a fourth clearance slot (221) for the mouse tail to be inserted is formed on the second connecting sleeve (22).

4. The mouse tail vein injection assisting device according to claim 3, characterized in that: A guide chute (23) is also formed on the injection platform (2), and the guide chute (23) extends from the upper surface of the injection platform (2) to be flush with the bottom of the second clamping groove (3231).

5. The mouse tail vein injection assisting device according to claim 4, characterized in that: The transmission mechanism (33) includes a transmission shaft (331) rotatably connected to the injection platform (2), a first gear (332) located at one end of the transmission shaft (331) and cooperating with the first clamping mechanism (31), and a second gear (333) located at the other end of the transmission shaft (331) and cooperating with the second clamping mechanism (32); the first connecting sleeve (313) is formed with a first transmission tooth (3132) meshing with the first gear (332), and the second connecting sleeve (323) is formed with a first transmission tooth (3132) meshing with the first gear (332). There is a second transmission tooth (3232) meshing with the second gear (333); the transmission mechanism (33) also includes a control rod (334) driving the transmission shaft (331) to rotate, and the control rod (334) is rotatably mounted on the injection platform (2); a first reversing tooth (3311) is provided in the middle of the transmission shaft (331), and a second reversing tooth (3341) meshing with the first reversing tooth (3311) is provided at one end of the control rod (334), and a knob (3342) is provided at the other end.

6. The mouse tail vein injection assisting device according to claim 5, characterized in that: The body fixing assembly (1) includes a fixing sleeve (11) and a base (12), wherein the base (12) is provided with a mounting ring (121) for mounting the fixing sleeve (11), and the fixing sleeve (11) is rotatably mounted in the mounting ring (121); a second air bag (111) is provided on the inner wall of the fixing sleeve (11), and the second air bag (111) is annular; an entrance (112) for the mouse body to enter is formed at one end of the fixing sleeve (11) close to the second clamping mechanism (31), and a bottom wall (113) is formed at the other end, and a top cover (13) is also provided at the entrance (112). A fifth paving groove (131) for the mouse's tail to be inserted is formed on the cover (13), and a plurality of air holes (1131) are formed on the bottom wall (113); a limiting slider (132) that slides with the fixed sleeve (11) is also formed on the inner wall of the top cover (13), and a limiting groove (114) that cooperates with the limiting slider (132) is formed on the outer wall of the fixed sleeve (11); a plurality of plug-in holes (133) are formed on one end of the top cover (13) close to the second clamping mechanism (31), and a plug-in column (3112) that cooperates with the plug-in hole (133) is formed on the clamping sleeve (311).

7. The mouse tail vein injection assisting device according to claim 6, characterized in that: The torso fixing assembly (1) further comprises a mouth guard (14) rotatably mounted on the bottom wall (113), the mouth guard (14) comprising a conical protective sleeve (141) and a control screw (142), the control screw (142) being threadedly connected to the bottom wall (113), a plurality of air vents (1411) being formed on the outer wall of the conical protective sleeve (141); and a rotary handle (1421) being provided at the outer end of the control screw (142).

8. The mouse tail vein injection assisting device according to claim 7, characterized in that: The mounting ring (121) is hinged to the base (12); a support frame (122) for supporting the fixing sleeve (11) is also provided on the base (12).

9. The mouse tail vein injection assisting device according to claim 8, characterized in that: A placement platform (123) for placing the injection platform (2) is provided at one end of the base (12), and the injection platform (2) is slidably placed on the placement platform (123). A plurality of guide columns (24) are provided at one end of the injection platform (2) close to the base (12), and guide holes (124) are formed on the base (12) and are slidably connected to the guide columns (24).

10. The mouse tail vein injection assisting device according to claim 1, characterized in that: A light assembly (4) is also slidably provided on the injection platform (2), and the light assembly (4) includes a light-emitting component (41) and an installation box (42) for installing the light-emitting component (41); a slide groove (25) for installing the installation box (42) is formed on the injection platform (2), and limiting plates (421) are formed on both sides of the installation box (42), and a toggle block (4211) is provided on the top of the limiting plate (421), and a movable groove (26) for the toggle block (4211) to pass through is also formed on the injection platform (2).

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