Auxiliary fixing device for tail vein injection of rats and mice

Abstract

The utility model belongs to the technical field of medical instruments, and discloses an auxiliary fixing device for tail intravenous injection of rats and mice, which comprises a supporting component and a placing component, the supporting component is detachably connected with the placing component, and the supporting component is used for adjusting the angle and height of the top placing component. The placing assembly comprises a placing box, a head fixing plate and a tail fixing plate, the head fixing plate is slidably connected into the placing box, the placing box is provided with a clamping groove for clamping the tail fixing plate, the inlet end of the placing box is of a funnel-shaped structure, and the placing box is provided with an air hole and an opening for placing mouse claws. The angle and the height can be adjusted, operation of experimenters is facilitated, all components of the device are detachable, and cleaning and disinfection are facilitated; the fixing device solves the problems that an existing fixing device is inconvenient to load rats and mice, cannot adjust the angle and height and is not easy to disassemble, and is suitable for fixing the rats and the mice in experiments.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an auxiliary fixation device for tail vein injection in mice and rats. Background Art

[0002] In animal medical experiments, mice and rats need to be fixed when undergoing tail vein injections. However, existing fixators have certain defects. When the mice and rats are pulled into the fixator, their paws will firmly grasp the edge of the fixator opening when passing through the fixator opening, making it difficult for the mice to enter the fixator. Most existing fixators are fixed and cannot be adjusted in angle and height, which causes certain inconveniences during injection. During the experiment, mice and rats may produce certain excrement in the fixator. Most existing fixators are of one-piece design and are not easy to disassemble and clean.

[0003] Therefore, there is a need for an auxiliary fixation device that can facilitate tail vein injection in mice and rats. Utility Model Content

[0004] The utility model aims to provide a tail vein injection auxiliary fixation device for mice and rats, so as to solve the problems of the prior art fixation device that the mice and rats are inconvenient to install, the angle and height cannot be adjusted, and the device is difficult to disassemble.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] The basic technical solution provided by the utility model is: an auxiliary fixation device for tail vein injection of mice, comprising: a placement component and a support component, the placement component and the support component are detachably connected, the placement component comprises a placement box, the placement box is made of a transparent material, and the placement box is open at both ends, wherein one side of the placement box entrance is a funnel-shaped opening, a sliding groove and a card slot are provided on the top of the placement box, the sliding groove and the card slot are cross-intersected, one end of the sliding groove is open, the card slot is provided on the side close to the funnel-shaped opening of the placement box, the card slot is used to place a tail fixing plate, a head fixing plate is slidably connected inside the placement box, the head fixing plate is provided with a groove for placing the head of the mouse, a fixing bolt is provided inside the head fixing plate, the nut diameter of the fixing bolt is larger than the width of the sliding groove, a placement opening for placing the tail of the mouse is provided at the bottom of the tail fixing plate, air vents are provided on both sides of the placement box, and a first opening for placing the mouse's paw and a first through groove for abdominal injection are provided at the bottom of the placement box.

[0007] The principle of the basic technical solution: by setting a funnel-shaped structure at the opening of the placement box, it can be prevented that the claws of mice and rats grab the side walls of the placement box when entering the placement box, making it difficult to enter. After the mice and rats enter the interior, the tail fixing plate is placed. The placement opening on the tail fixing plate is used to place the tail of the mice and rats. The air vents on the placement box are used for ventilation. The first opening is used to place the mouse claws. The first through groove is used for abdominal injection of mice and rats. The head fixing plate is slid to fix the head of the mice and rats in the groove. The mice and rats are fixed and restricted between the tail fixing plate and the head fixing plate. The fixing bolt is rotated to make the nut of the fixing bolt press against the top of the placement box, thereby fixing the head fixing plate. The support assembly is used to adjust the height and angle to facilitate experiments. The head fixing plate, baffle and tail fixing plate are all removable to facilitate cleaning of the inside of the placement box.

[0008] The beneficial effects of the basic technical solution are: the device can easily place and fix rats into the placement box. The entrance of the device is a funnel-shaped structure, which can prevent the rat's claws from grabbing the entrance of the placement box. The device is made of transparent material, and the situation of the rats inside can be observed at any time. It can be judged whether the experiment needs to continue based on the situation of the rats. The head fixing plate of the device can be slid and adjusted, and can fix experimental rats of different sizes. The support component of the device can adjust the angle and height of the placement box, and can be adjusted to a position that is convenient for the experimenter to operate. The various components of the device are detachably connected, which can facilitate the cleaning and disinfection of various parts of the device.

[0009] Preferably, the tail fixing plate is also made of transparent material.

[0010] Through the above-mentioned setting, the tails of mice and rats can be observed more comprehensively, making it easier to perform injection operations on the tails.

[0011] Preferably, a handle is connected to the top of the tail fixing plate for easy picking up.

[0012] The above arrangement makes it easy to place and remove the tail fixing plate.

[0013] Preferably, the interior of the groove is a truncated cone-shaped structure.

[0014] Through the above arrangement, the groove can better fit the head of the mouse and rat, and better fix the head of the mouse and rat.

[0015] Preferably, a protrusion is connected to the bottom of the tail fixing plate, and a recess is provided on the top of the receiving plate corresponding to the protrusion.

[0016] Through the above arrangement, the placement box can be better connected to the tail fixing plate, and the tail fixing plate can be better fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 An exploded view of the components placed in this utility model;

[0019] Figure 3 This is a structural diagram of the support assembly of the utility model;

[0020] Figure 4 This is a cross-sectional view of the head fixing plate of the present invention;

[0021] The names of the corresponding marks in the accompanying drawings are: placement component 1, support component 2, placement box 3, tail fixing plate 4, head fixing plate 5, bottom plate 21, first connecting rod 22, second connecting rod 23, receiving plate 24, second opening 25, second through groove 26, insert block 27, recess 28, sliding groove 31, card slot 32, air vent 33, first opening 34, first through groove 35, slot 36, placement port 41, protrusion 42, groove 51, fixing bolt 52. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0023] like Figure 1-Figure 4As shown, an auxiliary fixation device for tail vein injection of mice and rats includes a placement component 1 and a support component 2. The support component 2 includes a bottom plate 21 and a receiving plate 24. The placement component 1 includes a placement box 3, a head fixing plate 5 and a tail fixing plate 4. The top of the bottom plate 21 is rotatably connected to two first connecting rods 22 through a damping shaft. The top of the first connecting rod 22 is rotatably connected to the second connecting rod 23 through a damping shaft. The top of the second connecting rod 23 is rotatably connected to the bottom of the receiving plate 24 through a damping shaft. The two sides of the top of the receiving plate 24 are connected to the plug blocks 27. The plug blocks 27 are used to be inserted into the slots 36. The top of the receiving plate 24 is provided with two recesses 28 for inserting the protrusions 42. The top of the receiving plate 24 is provided with a second through groove 26 and four second openings 25. The upper side of the receiving plate 24 is used to receive the placement box 3. The placement box 3 is made of transparent material, and the placement box 3 has openings at both ends. One side opening is a funnel-shaped structure, and a sliding groove 31 and a card slot 32 are provided on the top of the placement box. The sliding groove 31 and the card slot 32 cross each other, and the card slot 32 is located on the side close to the funnel-shaped opening. The card slot 32 is used to place the tail fixing plate 4, and the head fixing plate 5 is slidably connected in the placement box 3. A first through groove 35 and four first openings 34 are provided at the bottom end of the placement box 3. A truncated cone-shaped groove 51 is provided on the head fixing plate 5, and a fixing bolt 52 is provided in the head fixing plate 5. The fixing bolt 52 is pressed against the top wall of the placement box 3 to lock the head fixing plate 5. The bottom two sides of the tail fixing plate 4 are connected with protrusions 42, and the protrusions 42 are used to be inserted into the recess 28. The tail fixing plate 4 is made of transparent material, and a placement port 41 is provided at the bottom of the tail fixing plate 4. A handle is connected to the top of the tail fixing plate 6, and a number of air holes 34 are provided on both sides of the placement box 3.

[0024] The specific implementation process is as follows: the head fixing plate 5 is located inside the placement box 3, the tail fixing plate 4 is used to be inserted into the card slot 32, the slots 36 on both sides of the placement box 3 are aligned with the insert blocks 27, the insert blocks 27 are inserted into the slots 36, so that the placement box 3 is placed on the top of the receiving plate 24, the first through slot 35 is aligned with the second through slot 26, the four first openings 34 are aligned with the four second openings 25, the large and small mice are driven away or placed vertically into the placement box 3, and then the tail fixing plate 4 is inserted into the card slot 32, the tail of the large and small mice is placed in the placement opening 41, and the tail fixing plate The protrusions 42 on both sides of the bottom are inserted into the notches 28, so that the tail fixing plate 4 is connected and fixed to the placement box 3 and the receiving plate 24, so that the mouse is located between the tail fixing plate 4 and the head fixing plate 5. Then, the head fixing plate 5 is slid to fix the mouse's head in the groove 51. The fixing bolt 52 is turned so that the nut of the fixing bolt 52 is pressed against the top of the placement box, so that the head fixing plate 5 is locked. The mouse is fixed and confined between the head fixing plate 5 and the tail fixing plate 4. Finally, the height and angle of the receiving plate 24 are adjusted according to the experimental needs to conduct the experiment.

[0025] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions or features in the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A tail vein injection auxiliary fixation device for mice and rats, characterized in that: include: A placement component (1) and a support component (2), wherein the placement component (1) and the support component (2) are detachably connected, the placement component (1) comprises a placement box (3), the placement box (3) is made of a transparent material, both ends of the placement box (3) are open, wherein one side of the entrance of the placement box (3) is a funnel-shaped opening, a sliding groove (31) and a card slot (32) are arranged on the top of the placement box (3), the sliding groove (31) and the card slot (32) are cross-intersected, one end of the sliding groove (31) is open, the card slot (32) is arranged on the side close to the funnel-shaped opening of the placement box (3), and the card slot (32) is used to place A tail fixing plate (4) is arranged, and a head fixing plate (5) is slidably connected inside the placement box (3), and the head fixing plate (5) is provided with a groove (51) for placing the head of a mouse, and a fixing bolt (52) is provided inside the head fixing plate (5), and the nut diameter of the fixing bolt (52) is larger than the width of the sliding groove (31), and a placement opening (41) for placing the tail of the mouse is provided at the bottom of the tail fixing plate (4), and ventilation holes (33) are provided on both sides of the placement box (3), and a first opening (34) for placing the mouse's paw and a first through groove (35) for abdominal injection are provided at the bottom of the placement box (3).

2. The tail vein injection auxiliary fixation device for rats and mice according to claim 1, characterized in that: The placement box (3) is provided with slots (36) on both sides, and the support assembly (2) includes a base plate (21), the base plate (21) is rotatably connected to a first connecting rod (22) via a damping shaft, the first connecting rod (22) is rotatably connected to a second connecting rod (23) via a damping shaft, the second connecting rod (23) is rotatably connected to a receiving plate (24) via a damping shaft, the receiving plate (24) is provided with a second opening (25) corresponding to the first opening (34), and a second through groove (26) corresponding to the first through groove (35), and a plug block (27) matching the slot (36) is connected to the top of the receiving plate (24), and the plug block (27) is used to connect and fix the placement box (3).

3. The tail vein injection auxiliary fixation device for rats and mice according to claim 1, characterized in that: The tail fixing plate (4) is also made of transparent material.

4. The tail vein injection auxiliary fixation device for rats and mice according to claim 1, characterized in that: The top of the tail fixing plate (4) is connected with a handle for easy picking.

5. The tail vein injection auxiliary fixation device for rats and mice according to claim 1, characterized in that: The interior of the groove (51) is a truncated cone-shaped structure.

6. The tail vein injection auxiliary fixation device for rats and mice according to claim 2, characterized in that: The bottom of the tail fixing plate (4) is connected with a protrusion (42), and the top of the receiving plate (24) is provided with a recess (28) corresponding to the protrusion (42).

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