Rat tail intravenous injection auxiliary device

Abstract

The utility model relates to the technical field of medical experiment instruments, in particular to a mouse tail intravenous injection auxiliary device which comprises an installation body, a mouse body fixing assembly, a mouse tail clamping assembly and an illumination assembly, the mouse body fixing assembly is detachably connected with the installation body, the mouse tail clamping assembly is fixedly connected with the installation body, and the illumination assembly is fixedly connected with the installation body. The mouse tail clamping assembly is arranged beside the mouse body fixing assembly; the lighting assembly is fixedly installed in the installation body and located below the mouse tail clamping assembly. The device can assist an operator in fixing and clamping the body and the tail of a mouse, and is simple and convenient to operate, low in cost and capable of remarkably improving the injection success rate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical experimental instruments, and more specifically to a rat tail vein injection auxiliary device. Background Art

[0002] Mice are common experimental subjects in medicine and biology, and intravenous injections into their tails are a common procedure in biological experiments. However, the mouse tail is long and flexible, making intravenous injections very difficult, especially for researchers and students new to animal research. A failed initial injection can result in drug or cell waste, compromised animal welfare, and even difficulty with a second injection due to tail swelling caused by a subcutaneous injection.

[0003] A Chinese patent discloses an adjustable mouse tail vein injection fixture, comprising: a base, two clamping sleeves installed on the top of the base, a tailstock fixed to one side of a support plate; a clamping mechanism, the clamping mechanism comprising a receiving slot opened on the top of the tailstock and a pressing plate arranged on the top of the tailstock, the pressing plate corresponding to the receiving slot, and a vertical gear rod installed on one side of the bottom of the pressing plate, the vertical gear rod corresponding to the receiving slot, and a moving mechanism for driving the vertical gear rod up and down is arranged between the vertical gear rod and the tailstock. The device can clamp the body and tail of the mouse, thereby improving the success rate of injection, but there is a problem with the device. It requires the user to press the mouse onto the base and then clamp the mouse with the clamping mechanism. The clamping mechanism is immovable, which is inconvenient during the clamping process and the mouse is more likely to break free. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a rat tail vein injection auxiliary device, wherein the rat body fixing component of the device is detachable, so that the user can fix and restrict the rat body.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] Provided is a mouse tail intravenous injection assist device, comprising a mounting body, a mouse body fixing assembly, a mouse tail clamping assembly, and a lighting assembly. The mouse body fixing assembly is detachably connected to the mounting body, the mouse tail clamping assembly is fixedly connected to the mounting body, and the mouse tail clamping assembly is arranged beside the mouse body fixing assembly; the lighting assembly is fixedly arranged in the mounting body and located below the mouse tail clamping assembly.

[0007] With this setting, when it is necessary to perform intravenous injection on the mouse through the tail, the staff first removes the mouse body fixing component from the mounting body, and fixes the mouse body with the mouse body fixing component, and then installs the mouse body fixing component on the mounting body to prevent the mouse from breaking free; when installing the mouse body fixing component, the mouse tail is directed toward the mouse tail clamping component, and the mouse tail is clamped by the mouse tail clamping component at this time to avoid injection errors caused by the swinging of the mouse tail during the intravenous injection process, and finally the lighting component is turned on, and the lighting component illuminates the mouse tail from the bottom of the clamping component, and the operator observes from above, so that the veins in the mouse tail are clearly displayed, thereby improving the accuracy of the injection.

[0008] Preferably, the mounting body is a box structure, one side of the box body is the working part, the mouse body fixing component and the mouse tail clamping component are both installed on the working part, and a lighting cavity is also provided in the mounting body, the lighting cavity is connected to the working part, and the lighting component is fixedly installed in the lighting cavity.

[0009] With this arrangement, the mouse tail clamping assembly is located next to the mouse body fixing assembly, making it easy to clamp the mouse tail. The lighting assembly illuminates the mouse tail in the accommodating cavity at the bottom of the mouse tail clamping assembly, making it easy for the user to observe the mouse tail vein.

[0010] Preferably, the mouse body fixer includes a accommodating cylinder and a closing cover, the accommodating cylinder is detachably connected to the working part, the closing cover is mounted on the accommodating cylinder near one end of the mouse tail clamping assembly, and the closing cover is detachably connected to the accommodating cylinder, and a first through hole is provided on the closing cover for the mouse tail to pass through.

[0011] With this arrangement, when the user needs to fix the mouse, he or she can first remove the accommodating tube from the working part, open the closing cover, place the mouse head inward into the tube, pass the mouse tail through the first through hole and close the closing cover, and then install the accommodating tube onto the working part to complete the fixation of the mouse body; compared with traditional auxiliary devices, which require pressing the mouse on the device before fixing it, fixing the mouse body with a detachable accommodating tube greatly improves the convenience of user operation and reduces the difficulty of operation.

[0012] Preferably, the working part is provided with a receiving groove that cooperates with the receiving tube, and a plurality of snap-in grooves are also provided in the receiving groove. The bottom of the receiving tube is provided with a plurality of snap-in blocks that correspond one-to-one to the snap-in grooves. The receiving tube is snap-fitted with the working part through the cooperation of the snap-in blocks and the snap-in grooves.

[0013] Through this setting method, the accommodating cylinder can be half-embedded in the accommodating groove, which is convenient for users to install and can also prevent the accommodating cylinder from rolling on the working part. At the same time, the snap-fit ​​block at the bottom of the accommodating cylinder corresponds to the snap-fit ​​groove in the accommodating groove, providing multiple direction limits, further improving the connection stability between the accommodating cylinder and the accommodating groove, and preventing the accommodating cylinder from falling off due to the mouse struggling during the injection process.

[0014] Preferably, the accommodating tube is further provided with a clamping piece, which is arranged on the inner side of the accommodating tube and is movably connected to the accommodating tube.

[0015] With this arrangement, when a mouse is placed in the accommodating tube, due to the different sizes of mice, some smaller mice still have more space to move around in the accommodating tube. At this time, the distance between the clamping piece and the wall of the accommodating tube can be adjusted so that the clamping piece presses the mouse tightly, restricting the movement of the mouse in the accommodating tube, thereby preventing the movement of the mouse in the accommodating tube from affecting the injection work.

[0016] Preferably, the end of the accommodating cylinder away from the closing cover is further provided with a plurality of second through holes for ventilation.

[0017] With this arrangement, the second through hole can ensure that the mouse can breathe smoothly in the holding tube, thereby preventing the mouse from having breathing difficulties that affect its vital signs during the infusion process.

[0018] Preferably, the rat tail clamping assembly includes a fixed part, an adjustment assembly and a movable part. The fixed part is fixedly mounted on the working part, and the movable part is movably connected to the fixed part through the adjustment assembly. A gap for clamping the rat tail is formed between the fixed part and the movable part, and the lighting cavity is located below the gap.

[0019] With this arrangement, after the mouse body is fixed, the operator grabs the mouse's tail and places it between the fixed part and the movable part. The operator then adjusts the distance between the fixed part and the movable part through the adjustment component. A gap is formed between the fixed part and the movable part to clamp the mouse's tail. The lighting component illuminates the mouse's tail at the gap in the lighting cavity. The operator observes from above the gap and performs the injection operation.

[0020] Preferably, the adjustment assembly includes an adjustment rack, an adjustment gear, an adjustment rod and an adjustment knob. The adjustment rack is fixedly connected to the fixed part and partially extends out of the fixed part. The movable part is slidably connected to the toothless part of the extended part of the adjustment rack. The adjustment gear is engaged with the adjustment rack. The adjustment rod is movably provided in the movable part, and one end is slidably connected to the adjustment gear and the other end is fixedly connected to the adjustment knob.

[0021] With this arrangement, when the distance between the movable part and the fixed part needs to be adjusted, the user turns the adjustment knob, and the adjustment knob drives the adjustment gear to rotate through the adjustment rod. The adjustment gear rolls along the rack, and the adjustment rod passing through the movable part drives the movable part to move together. The movable part slides along the rack toward or away from the fixed part, thereby achieving the purpose of adjusting the distance between the movable part and the fixed part.

[0022] Preferably, the movable portion is provided with a third through hole for passing the adjusting rod, the third through hole is provided with a card slot around the side, the adjusting rod is provided with a card block corresponding to the card slot, and the card block is embedded in or away from the card slot as the adjusting rod moves.

[0023] With this setting, after the distance adjustment between the fixed part and the movable part is completed, the adjustment rod can be pulled to allow the card block to be embedded in the card slot, thereby limiting the rotation of the adjustment rod and keeping the movable part and the fixed part fixed, thereby avoiding the relative movement of the movable part and the fixed part during the injection process, causing the rat tail to break free.

[0024] Furthermore, a limiter is provided at the end of the adjusting rod near the adjusting gear, which includes but is not limited to structures such as nuts and protrusions. The limiter is used to limit the sliding range of the adjusting rod to prevent the adjusting rod from being pulled out too much and detaching from the adjusting gear.

[0025] Preferably, the lighting assembly includes a bulb and a battery box. The bulb is fixedly installed in the lighting cavity, and the battery box is embedded in the mounting body. A switch for controlling the on / off power of the bulb is also provided on the side of the mounting body. The switch, battery box and bulb are all electrically connected.

[0026] With this setup, the operator can control the bulb to be energized via a switch, providing illumination to the rat tail during the injection process.

[0027] Preferably, the lighting assembly further comprises a reflective cup, the reflective cup is fixedly mounted in the lighting cavity, and the light bulb is mounted inside the reflective cup.

[0028] With this setting, the reflector can reflect the light emitted by the concentrated bulb and improve the lighting effect on the mouse's tail.

[0029] Furthermore, the bulb uses a tungsten filament bulb. This configuration allows the light produced by the tungsten filament bulb to be closer to sunlight, reducing color deviation and avoiding visual errors. The tungsten filament bulb also produces a uniform light spectrum, preventing glare from long-term use. Furthermore, the tungsten filament bulb also generates heat, which helps to increase the temperature of the mouse's tail, stimulate the dilation of the mouse's tail vein, and improve the success rate of injections.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] (1) The mouse body fixing component and the device body adopt a detachable connection structure. The user can remove the mouse body fixing component to fix the mouse, and then install the mouse body fixing component to the device, which greatly improves the operator's convenience in fixing the mouse body.

[0032] (2) The rat tail clamping component is adjustable, which makes it easier for users to stably clamp rat tails of different thicknesses, thereby improving the success rate of injection.

[0033] (3) The lighting component illuminates the rat's tail through the gap of the clamping component, which can not only ensure that the operator can clearly observe the veins of the rat's tail, but also avoid excessive light directly hitting the operator's eyes, which is helpful to relieve the operator's eye fatigue caused by long-term injection operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram from the first perspective of a rat tail vein injection assisting device of the present invention;

[0035] Figure 2 for Figure 1 AA section view;

[0036] Figure 3 This is a schematic diagram from a second perspective of a rat tail vein injection assisting device according to the present invention;

[0037] Figure 4 This is a schematic diagram of the disassembled structure of a rat tail vein injection auxiliary device of the utility model;

[0038] Figure 5 This is a schematic structural diagram of a rat tail clamping assembly of a rat tail vein injection auxiliary device of the present invention.

[0039] The icon markings are explained as follows:

[0040] 1. Mounting body; 11. Working part; 12. Illuminating cavity; 13. Accommodating slot; 131. Clamping slot; 2. Mouse body fixing assembly; 21. Accommodating tube; 211. Clamping piece; 212. Second through hole; 213. Clamping block; 22. Closing cover; 221. First through hole; 3. Mouse tail clamping assembly; 31. Fixing part; 32. Adjusting assembly; 321. Adjusting rack; 322. Adjusting gear; 323. Adjusting rod; 324. Adjusting knob; 325. Clamping block; 33. Moving part; 331. Third through hole; 332. Clamping slot; 4. Illuminating assembly; 41. Bulb; 42. Battery box; 43. Switch; 44. Reflective cup. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0042] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] Example 1

[0044] like Figures 1 to 4 The figure shows the first embodiment of the rat tail intravenous injection auxiliary device of the present invention, which includes a mounting body 1, a rat body fixing component 2, a rat tail clamping component 3 and a lighting component 4. The rat body fixing component 2 is detachably connected to the mounting body 1, and the rat tail clamping component 3 is fixedly connected to the mounting body 1, and the rat tail clamping component 3 is installed next to the rat body fixing component 2; the lighting component 4 is fixedly installed in the mounting body 1 and is located below the rat tail clamping component 3.

[0045] With this arrangement, when it is necessary to perform intravenous injection on the mouse through the tail, the staff first fixes the mouse's body through the mouse body fixing component 2, exposing the mouse's tail. At this time, the mouse's tail is clamped by the mouse tail clamping component 3 to avoid injection errors caused by the swinging of the mouse's tail during the intravenous injection. Finally, the lighting component 4 is turned on. The lighting component 4 illuminates the mouse's tail from the bottom of the clamping component, and the operator observes from above, so that the veins in the mouse's tail are clearly displayed, thereby improving the accuracy of the injection.

[0046] As an embodiment of the present utility model, the mounting body 1 is a box structure, one side of the box body is a working part 11, the mouse body fixing component 2 and the mouse tail clamping component 3 are both installed on the working part 11, and an illumination cavity 12 is also opened in the mounting body 1, the illumination cavity 12 is connected to the working part 11, and the illumination component 4 is fixedly installed in the illumination cavity 12.

[0047] With this arrangement, the tail clamping assembly 3 is located beside the body fixing assembly 2, making it easy to clamp the tail of the mouse. The lighting assembly 4 illuminates the tail of the mouse in the lighting cavity 12 at the bottom of the tail clamping assembly 3, making it easy for the user to observe.

[0048] As an embodiment of the present invention, the mouse body fixer includes a accommodating cylinder 21 and a closing cover 22. The accommodating cylinder 21 is detachably connected to the working part 11. The closing cover 22 is installed at one end of the accommodating cylinder 21 close to the mouse tail clamping assembly 3, and the closing cover 22 is detachably connected to the accommodating cylinder 21. A first through hole 221 is provided on the closing cover 22 for the mouse tail to pass through.

[0049] Through this arrangement, when the user needs to fix the mouse, he can first remove the accommodating tube 21 from the working part 11, open the closing cover 22, put the mouse head inward into the accommodating tube 21, then pass the mouse tail through the first through hole 221 and close the closing cover 22, and then install the accommodating tube 21 onto the working part 11 to complete the fixation of the mouse body; compared with traditional auxiliary devices, which require pressing the mouse on the device before fixing it, fixing the mouse body with the detachable accommodating tube 21 greatly improves the convenience of user operation and reduces the difficulty of operation.

[0050] As an embodiment of the present utility model, the working part 11 is provided with a receiving groove 13 that cooperates with the receiving tube 21, and a plurality of snap-in grooves 131 are further provided in the receiving groove 13. The bottom of the receiving tube 21 is provided with a plurality of snap-in blocks 213 that correspond one-to-one to the snap-in grooves 131. The receiving tube 21 is snap-in connected with the working part 11 through the cooperation of the snap-in blocks 213 and the snap-in grooves 131.

[0051] Through this setting method, the accommodating cylinder 21 can be half-embedded in the accommodating groove 13, which is convenient for the user to install and can also prevent the accommodating cylinder 21 from rolling on the working part 11. At the same time, the snap-fit ​​block 213 at the bottom of the accommodating cylinder 21 corresponds to the snap-fit ​​groove 131 in the accommodating groove 13, providing multiple direction limits, further improving the connection stability between the accommodating cylinder 21 and the accommodating groove 13, and avoiding falling off due to the struggle of the mouse during the injection process.

[0052] As an embodiment of the present invention, the accommodating tube 21 is further provided with two clamping pieces 211 , both of which are installed on the inner side of the accommodating tube 21 . Two threaded holes are provided on the accommodating tube 21 , and the clamping pieces 211 are movably connected to the accommodating tube 21 through adjusting bolts.

[0053] Through this arrangement, when the mouse is placed in the accommodating tube 21, because the mice have different sizes, some smaller mice still have more space to move around in the accommodating tube 21. At this time, the distance between the clamping piece 211 and the wall of the accommodating tube 21 can be adjusted so that the clamping piece 211 presses the mouse tightly, restricting the movement of the mouse in the accommodating tube 21, thereby preventing the mouse from moving around in the accommodating tube 21 and affecting the injection work.

[0054] As an embodiment of the present invention, nine second through holes 212 for ventilation are further provided at one end of the accommodating cylinder 21 away from the closing cover 22 .

[0055] With this arrangement, the second through hole 212 can ensure that the mouse can breathe smoothly in the accommodating tube 21, thereby preventing the mouse from having breathing difficulties that affect its vital signs during the infusion process.

[0056] Example 2

[0057] like Figures 1 to 5 The second embodiment of the rat tail vein injection auxiliary device of the present invention is shown. This embodiment is similar to the first embodiment, except that the arrangement of the rat tail clamping component 3 is different.

[0058] As an embodiment of the present invention, the mouse tail clamping assembly 3 includes a fixed part 31, an adjusting assembly 32 and a movable part 33. The fixed part 31 is fixedly mounted on the working part 11, and the movable part 33 is movably connected to the fixed part 31 through the adjusting assembly 32. A gap for clamping the mouse tail is formed between the fixed part 31 and the movable part 33, and the lighting cavity 12 is located below the gap.

[0059] With this arrangement, after the mouse body is fixed, the operator grabs the mouse's tail and places it between the fixed portion 31 and the movable portion 33. The operator then adjusts the distance between the fixed portion 31 and the movable portion 33 through the adjustment component 32. A gap is formed between the fixed portion 31 and the movable portion 33 to clamp the mouse's tail. The lighting component 4 illuminates the mouse's tail at the gap in the lighting cavity 12. The operator observes from above the gap and performs the injection operation.

[0060] As an embodiment of the present utility model, the adjustment assembly 32 includes an adjustment rack 321, an adjustment gear 322, an adjustment rod 323 and an adjustment knob 324. The adjustment rack 321 is fixedly connected to the fixed part 31 and partially extends out of the fixed part 31. The movable part 33 is slidingly connected to the toothless part of the extended part of the adjustment rack 321. The adjustment gear 322 is engaged with the adjustment rack 321. The adjustment rod 323 is movably provided in the movable part 33, and one end is slidingly connected to the adjustment gear 322, and the other end is fixedly connected to the adjustment knob 324.

[0061] Through this arrangement, when the distance between the movable part 33 and the fixed part 31 needs to be adjusted, the user turns the adjusting knob 324, and the adjusting knob 324 drives the adjusting gear 322 to rotate through the adjusting rod 323. The adjusting gear 322 rolls along the rack, and the adjusting rod 323 passing through the movable part 33 drives the movable part 33 to move together, and the movable part 33 slides along the rack toward or away from the fixed part 31, thereby achieving the purpose of adjusting the distance between the movable part 33 and the fixed part 31.

[0062] As an embodiment of the present utility model, the movable portion 33 is provided with a third through hole 331 for passing the adjusting rod 323, and the third through hole 331 is provided with a card slot 332 on the side thereof. The adjusting rod 323 is provided with a card block 325 corresponding to the card slot 332, and the card block 325 moves with the adjusting rod 323 to be embedded in or away from the card slot 332.

[0063] Through this setting, after the distance adjustment between the fixed part 31 and the movable part 33 is completed, the adjustment rod 323 can be pulled to make the block 325 embed into the slot 332, thereby limiting the rotation of the adjustment rod 323, so that the movable part 33 and the fixed part 31 remain fixed, avoiding the relative movement of the movable part 33 and the fixed part 31 during the injection process, causing the rat tail to break free.

[0064] As an embodiment of the present invention, a limiter is further provided at the end of the adjusting rod 323 near the adjusting gear 322. The limiter includes but is not limited to structures such as nuts and protrusions. The limiter is used to limit the sliding range of the adjusting rod 323 to prevent the adjusting rod 323 from being pulled out too much and disengaging from the adjusting gear 322.

[0065] Example 3

[0066] like Figures 1 to 5 The third embodiment of the rat tail vein injection auxiliary device of the present invention is shown. This embodiment is similar to the second embodiment, except that the arrangement of the lighting component 4 is different.

[0067] As an embodiment of the present invention, the lighting assembly 4 includes a bulb 41 and a battery box 42. The bulb 41 is fixedly installed in the lighting cavity 12, and the battery box 42 is embedded in the mounting body 1. The side of the mounting body 1 is also provided with a switch 43 for controlling the power on / off of the bulb 41. The switch 43, the battery box 42 and the bulb 41 are all electrically connected.

[0068] With this arrangement, the operator can control the light bulb 41 to be energized through the switch 43 to provide lighting for the mouse tail during the injection operation.

[0069] As an embodiment of the present invention, the lighting assembly 4 further includes a reflective cup 44 . The reflective cup 44 is fixedly installed in the lighting cavity 12 , and the bulb 41 is installed inside the reflective cup 44 .

[0070] With this arrangement, the reflective cup 44 can reflect the light emitted by the focusing bulb 41, thereby improving the lighting effect on the mouse tail.

[0071] As one embodiment of the present invention, light bulb 41 utilizes a tungsten filament bulb. This configuration allows the light produced by the tungsten filament bulb to more closely resemble sunlight, reducing color deviation and preventing visual errors. The tungsten filament bulb also provides a uniform light spectrum, preventing glare from long-term use. Furthermore, the tungsten filament bulb also generates heat, which helps increase the temperature of the rat's tail, stimulates the dilation of the rat's tail vein, and improves the success rate of injections.

[0072] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A rat tail vein injection assist device, characterized in that: The invention comprises a mounting body (1), a mouse body fixing component (2), a mouse tail clamping component (3) and a lighting component (4), wherein the mouse body fixing component (2) is detachably connected to the mounting body (1), the mouse tail clamping component (3) is fixedly connected to the mounting body (1), and the mouse body fixing component (2) is arranged beside the mouse tail clamping component (3); the lighting component (4) is fixedly arranged in the mounting body (1) and is located below the mouse tail clamping component (3); The mounting body (1) is a box structure, one side of the box body is a working part (11), the mouse body fixing component (2) and the mouse tail clamping component (3) are both mounted on the working part (11), and an illumination cavity (12) is further provided in the mounting body (1), the illumination cavity (12) is communicated with the working part (11), and the illumination component (4) is fixedly mounted in the illumination cavity (12); The rat body fixing assembly comprises a receiving cylinder (21) and a closing cover (22), wherein the receiving cylinder (21) is detachably connected to the working portion (11), and the closing cover (22) is mounted on one end of the receiving cylinder (21) close to the rat tail clamping assembly (3), and the closing cover (22) is detachably connected to the receiving cylinder (21), and a first through hole (221) for the rat tail to pass through is provided on the closing cover (22); The accommodating cylinder (21) is further provided with a clamping piece (211), which is arranged inside the accommodating cylinder (21). The clamping piece (211) is movably connected to the accommodating cylinder (21), and the distance between the clamping piece (211) and the cylinder wall of the accommodating cylinder (21) is adjustable.

2. The rat tail vein injection assist device according to claim 1, characterized in that: The working part (11) is provided with a receiving groove (13) that cooperates with the receiving cylinder (21), and a plurality of clamping grooves (131) are further provided in the receiving groove (13). The bottom of the receiving cylinder (21) is provided with a plurality of clamping blocks (213) that correspond one-to-one with the clamping grooves (131). The receiving cylinder (21) achieves clamping connection between the receiving groove (13) and the working part (11) through the cooperation of the clamping blocks (213) and the clamping grooves (131).

3. The rat tail vein injection assist device according to claim 1, characterized in that: The mouse tail clamping assembly (3) comprises a fixed portion (31), an adjusting assembly (32) and a movable portion (33), wherein the fixed portion (31) is fixedly mounted on the working portion (11), and the movable portion (33) is movably connected to the fixed portion (31) via the adjusting assembly (32), and a gap for clamping the mouse tail is formed between the fixed portion (31) and the movable portion (33), and the lighting cavity (12) is located below the gap.

4. The rat tail vein injection assist device according to claim 3, characterized in that: The adjustment assembly (32) comprises an adjustment rack (321), an adjustment gear (322), an adjustment rod (323) and an adjustment knob (324); the adjustment rack (321) is fixedly connected to the fixed portion (31) and partially extends out of the fixed portion (31); the movable portion (33) is slidably connected to the toothless portion of the extended portion of the adjustment rack (321); the adjustment gear (322) is meshed with the adjustment rack (321); the adjustment rod (323) is movably provided in the movable portion (33), one end of which is slidably connected to the adjustment gear (322) and the other end of which is fixedly connected to the adjustment knob (324).

5. The rat tail vein injection assist device according to claim 4, characterized in that: The movable portion (33) is provided with a third through hole (331) for passing the adjusting rod (323); a clamping groove (332) is provided around the third through hole (331); a clamping block (325) corresponding to the clamping groove (332) is provided on the adjusting rod (323); the clamping block (325) moves with the adjusting rod (323) to be embedded in or away from the clamping groove (332).

6. The rat tail vein injection assisting device according to any one of claims 1 to 5, characterized in that: The lighting assembly (4) comprises a light bulb (41) and a battery box (42). The light bulb (41) is fixedly mounted in the lighting cavity (12). The battery box (42) is embedded in the mounting body (1). A switch (43) for controlling the on / off power of the light bulb (41) is further provided on the side of the mounting body (1). The switch (43), the battery box (42) and the light bulb (41) are all electrically connected.

7. The rat tail vein injection assist device according to claim 6, characterized in that: The lighting assembly (4) further comprises a reflective cup (44), the reflective cup (44) being fixedly mounted in the lighting cavity (12), and the light bulb (41) being mounted inside the reflective cup (44).

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