Caudal vein injection device for small animals

Abstract

The utility model relates to the technical field of animal experiments, and discloses a small animal caudal vein injection device which comprises a bottom plate, an inserting groove is formed in the bottom of the front end of the bottom plate, clamping holes are formed in the inner walls of the two sides of the inserting groove, a fixing groove is formed in the upper surface of the bottom plate, an upper plate is movably installed at the top of the bottom plate, and a lower plate is movably installed at the bottom of the bottom plate. A limiting groove is formed in the lower surface of the upper plate, the rear end of the fixing groove and the rear end of the limiting groove penetrate through the bottom plate and the upper plate respectively, a mouse tail groove is formed in the position, located above the inserting groove, of the front end of the bottom plate, the mouse tail groove is communicated with the fixing groove, a bandage is arranged on the left side wall of the fixing groove, and a hook-and-loop fastener suede is arranged on the upper surface of the bandage. According to the mouse limiting device, through the installation bottom plate, the mouse tail groove, the fixing groove, the binding belt, the upper plate, the hook-and-loop fastener hook face, the spring column and the like, the mouse limiting device has the more convenient limiting capacity, a mouse can be conveniently limited, meanwhile, the mouse does not need to be extruded during limiting, and damage to the mouse during limiting can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of animal experiments, in particular to a tail vein injection device for small animals. Background Art

[0002] Mice are a common experimental animal used in medical research. They are bred according to the requirements of scientific research and are the objects and materials for scientific experiments. They are mainly used in animal reproduction research and are also widely used in nutrition, immunity, cosmetics testing, etc.

[0003] In the process of scientific experiments, it is often necessary to perform tail vein injection and blood sampling on mice. At present, when performing these experimental operations, there is a problem of inconvenience in fixing the mice, which will lead to repeated experimental operations, resulting in a waste of experimental time, and it is easy to be bitten by mice during the process, which is very unsafe.

[0004] A Chinese patent (publication number: CN213883650U) discloses a fixing device for tail vein injection of small animals. The device does not require additional experimenters to hold mice during the experiment, and will not be bitten by mice during the process. The upper and lower fixing clamps can stably fix the head of the mouse to prevent the mouse from swinging in the animal tube.

[0005] Although the existing technology has solved the problem of inconvenient fixation of mice, it still has certain defects. The devices commonly used in existing laboratories for fixing mice are generally divided into a simple cylinder with a cover. The mouse is stuffed into the cylinder, and then the mouse tail is stuffed into the hole in the cover, and then the cover is screwed on to complete the fixation of the mouse. However, it is not easy to stuff the mouse into the cylinder when using the device. The mouse will struggle when stuffing it in, and the overall operation is not convenient enough. The other type is a cylinder with grooves on the top. When in use, pinch the mouse tail and move the mouse tail along the groove to the bottom of the cylinder, and then insert the piston to squeeze the mouse at the bottom of the cylinder to complete the limiting. This device is more convenient to use, but in order to limit the mouse, the mouse will be squeezed, thereby causing harm to the mouse. The device designed in the above patent also needs to adjust each component during use to achieve the limiting effect, which is not convenient to use. Therefore, a device that is convenient for limiting mice and will not cause harm to mice is needed. Summary of the invention

[0006] In view of the shortcomings of the prior art, the utility model provides a tail vein injection device for small animals, which has a more convenient limiting capability, making it convenient to limit mice. At the same time, there is no need to squeeze the mice when limiting, which can prevent the mice from being injured when limiting. This solves the problem that the existing devices are not convenient enough when limiting mice or are prone to causing injuries to mice.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tail vein injection device for small animals, comprising a bottom plate, a slot is provided at the bottom of the front end of the bottom plate, and clamping holes are provided on the inner walls on both sides of the slot, a fixing slot is provided on the upper surface of the bottom plate, an upper plate is movably mounted on the top of the bottom plate, and a limiting slot is provided on the lower surface of the upper plate, and the rear ends of the fixing slot and the limiting slot respectively penetrate the bottom plate and the upper plate;

[0008] The design of the bottom plate and the upper plate enables the device to have a more convenient limiting capability, which is convenient for limiting the mouse. At the same time, there is no need to squeeze the mouse when limiting the mouse, which can prevent the mouse from being injured when limiting the mouse.

[0009] Preferably, a rat-tail groove is provided at the front end of the bottom plate above the slot, the rat-tail groove is communicated with the fixing slot, a strap is provided on the left side wall of the fixing slot, and a Velcro velvet surface is provided on the upper surface of the strap.

[0010] Preferably, magnets are embedded and installed at the front and rear ends of the right side of the upper surface of the base plate, and an empty groove is opened on the upper surface of the base plate between the two groups of magnets, and the width of the empty groove is greater than the width of the strap.

[0011] Preferably, a Velcro hook surface is provided on the top of the upper plate, an opening and closing block is fixedly installed on the right side of the upper plate, and iron sheets are inlaid and installed at the front and rear ends of the right side of the lower surface of the upper plate.

[0012] Preferably, a spring column is fixedly mounted on the front end of the lower surface of the upper plate, the spring column is matched with the rat-tail groove, and the spring column has a built-in spring that is retractable.

[0013] Preferably, an auxiliary mechanism is detachably installed at the front end of the base plate, and the auxiliary mechanism includes a rat tail placement plate and an insertion plate. The rat tail placement plate is fixedly installed with the insertion plate, the rat tail placement plate is movably installed at the front end of the base plate, and the insertion plate is detachably installed inside the slot.

[0014] Preferably, a pressing block is movably installed on the left side of the rat tail placement plate, and placement grooves are provided on the upper and lower sides of the rat tail placement plate, and the placement groove and the bottom of the rat tail groove are in the same straight line.

[0015] Preferably, a clamping block is movably installed on the left side of the plug plate, a cavity is opened inside the plug plate and the rat tail placement plate, a linkage plate is movably installed inside the cavity, the front and rear ends of the left side of the linkage plate are respectively fixedly connected to the pressing block and the clamping block, and a return spring is fixedly installed on the right side of the linkage plate.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The tail vein injection device for small animals has a more convenient limiting ability by installing a bottom plate, a mouse tail groove, a fixing groove, a strap, an upper plate, a Velcro hook surface, a spring column and other devices, so as to facilitate limiting the position of mice. At the same time, there is no need to squeeze the mice when limiting the position, so as to prevent the mice from being injured when limiting the position.

[0018] 2. This tail vein injection device for small animals achieves the purpose of being more convenient to use and assisting injection by installing slots, card holes, mouse tail placement plates, placement grooves, pressing blocks, plug plates, card blocks and other devices. At the same time, the auxiliary mechanism has the ability to adjust the length, thereby improving the applicability of the auxiliary mechanism and making it more convenient to inject into the mouse tail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the tail vein injection device of the utility model;

[0021] Figure 2 This is a schematic diagram of the opening and closing structure of the bottom plate and the upper plate of the utility model;

[0022] Figure 3 This is a schematic diagram of the split structure of the rat tail placement plate of the utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the auxiliary mechanism of the utility model;

[0024] Figure 5 The utility model is a schematic diagram of the internal structure of the rat tail placement board.

[0025] Description of reference numerals:

[0026] 1. Bottom plate; 2. Slot; 3. Clamp hole; 4. Rat tail slot; 5. Fixed slot; 6. Empty slot; 7. Magnet; 8. Strap; 9. Velcro velvet; 10. Upper plate; 11. Velcro hook surface; 12. Opening and closing block; 13. Spring column; 14. Limiting slot; 15. Iron sheet; 16. Auxiliary mechanism; 161. Rat tail placement plate; 162. Placement slot; 163. Pressing block; 164. Insert plate; 165. Clamp block; 166. Cavity; 167. Linkage plate; 168. Reset spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 5 , the utility model provides a technical solution:

[0029] A tail vein injection device for small animals, comprising a bottom plate 1, a slot 2 is provided at the bottom of the front end of the bottom plate 1, and clamping holes 3 are provided on the inner walls on both sides of the slot 2. A fixing slot 5 is provided on the upper surface of the bottom plate 1, and an upper plate 10 is movably installed on the top of the bottom plate 1. A limiting slot 14 is provided on the lower surface of the upper plate 10. The rear ends of the fixing slot 5 and the limiting slot 14 respectively penetrate the bottom plate 1 and the upper plate 10. The design of the bottom plate 1 and the upper plate 10 makes the device have a more convenient limiting ability, which is convenient for limiting mice. At the same time, there is no need to squeeze the mice when limiting, which can prevent the mice from being injured when limiting. The front end of the bottom plate 1 is located above the slot 2 and is provided with a mouse tail slot 4. The rat tail groove 4 is communicated with the fixed groove 5, and a strap 8 is provided on the left side wall of the fixed groove 5. The upper surface of the strap 8 is provided with a Velcro velvet surface 9, and magnets 7 are inlaid on the front and rear ends of the right side of the upper surface of the base plate 1. An empty groove 6 is provided on the upper surface of the base plate 1 between the two groups of magnets 7, and the width of the empty groove 6 is greater than the width of the strap 8. A Velcro hook surface 11 is provided on the top of the upper plate 10, and an opening and closing block 12 is fixedly installed on the right side of the upper plate 10. Iron sheets 15 are inlaid on the front and rear ends of the right side of the lower surface of the upper plate 10, and a spring column 13 is fixedly installed on the front end of the lower surface of the upper plate 10, and the spring column 13 is consistent with the rat tail groove 4, and the spring column 13 has a retractable spring built in.

[0030] By adopting the above technical scheme, the existing tail vein injection device for limiting the position of mice is not convenient enough when limiting the position of mice. Among them, a tail vein injection device commonly used in existing laboratories needs to limit the position of mice by squeezing the mice by pistons in order to achieve the limiting effect, and this operation is easy to cause harm to the mice. The design of the present device solves the above problems. When in use, the upper plate 10 is first opened, and then the strap 8 placed in the fixed groove 5 is turned to one side. When opening the upper plate 10, the opening and closing block 12 can be used to facilitate the opening of the upper plate 10, and the mouse is placed in the fixed groove 5, and the mouse tail is placed in the mouse tail groove 4. At this time, the strap 8 is covered on the mouse and placed in the empty groove 6, and the upper plate 10 is covered on the bottom plate 1. After the upper plate 10 is covered on the bottom plate 1, the magnet 7 and the iron sheet 15 are adsorbed to complete the closure of the bottom plate 1 and the upper plate 10. Finally, the strap 8 is flipped over to cover the upper plate 10. The upper surface of the upper plate 10 is provided with a Velcro hook surface 11, and the reverse side of the strap 8 is provided with a Velcro velvet surface 9. When the strap 8 is flipped over to cover the top of the upper plate 10, the strap 8 is adhered to the Velcro hook surface 11 on the top of the upper plate 10 through the Velcro velvet surface 9 to complete the fixation of the strap 8. Before fixing the strap 8, it is necessary to pull it slightly outward to ensure that the strap 8 covers the mouse, which can restrict the mouse. The strap 8 is velvet and has a soft texture. The mouse is limited by fixing the strap 8 and the upper plate 10 to avoid the problem of causing harm to the mouse when limiting the position. After the upper plate 10 is fixed to the bottom plate 1, the spring column 13 will be inserted into the mouse tail groove 4, which can limit the mouse tail. The spring column 13 has a built-in spring and can be retracted, thereby improving its limiting ability for the mouse tail and further improving the limiting ability of the device for mice.

[0031] Specifically, Figures 2 to 5 As shown, an auxiliary mechanism 16 is detachably installed at the front end of the base plate 1, and the auxiliary mechanism 16 includes a rat tail placement plate 161 and an inserting plate 164. The rat tail placement plate 161 and the inserting plate 164 are fixedly installed, the rat tail placement plate 161 is movably installed at the front end of the base plate 1, and the inserting plate 164 is detachably installed inside the slot 2. A pressing block 163 is movably installed on the left side of the rat tail placement plate 161, and placement grooves 162 are provided on the upper and lower sides of the rat tail placement plate 161. The placement groove 162 and the bottom of the rat tail slot 4 are in the same straight line, and a card block 165 is movably installed on the left side of the inserting plate 164. A cavity 166 is provided inside the inserting plate 164 and the rat tail placement plate 161, and a linkage plate 167 is movably installed inside the cavity 166. The front and rear ends of the left side of the linkage plate 167 are respectively fixedly connected to the pressing block 163 and the card block 165, and a reset spring 168 is fixedly installed on the right side of the linkage plate 167.

[0032] By adopting the above technical solution, the front end of the bottom plate 1 is detachably installed with an auxiliary mechanism 16, the front end of the bottom plate 1 is provided with a slot 2 and the inner walls on both sides of the slot 2 are provided with a clamping hole 3, and the upper and lower sides of the mouse tail placement plate 161 are provided with a placement slot 162. When installing the auxiliary mechanism 16, there is no need to respectively install the front and back sides. At the same time, after the auxiliary mechanism 16 is installed with the bottom plate 1, the placement slot 162 is docked with the mouse tail slot 4, and the mouse tail after limiting can be placed in the placement slot 162. When in use, the mouse tail is placed in the placement slot 162. When the tail vein is injected, the position of one-third of the mouse tail is generally selected for injection. The length of the placement slot 162 is roughly two-thirds of the length of most mouse tails. Therefore, it is convenient to find the one-third of the mouse tail during injection, and place the mouse tail in the placement slot 162. The extra mouse tail The tail is bent with the help of the tail placement plate 161, so that the tail is injected through the bent part. This structural design makes the device more convenient to use and achieves the purpose of auxiliary injection. At the same time, the device has the ability to adjust the length, thereby improving the applicability of the auxiliary mechanism 16. The length of the tail of the mouse cannot be exactly the same, so one-third of the tail of the mouse will not be in the same position. The auxiliary mechanism 16 has the ability to adjust the length to achieve better applicability. Press the pressing block 163 on one side of the tail placement plate 161, and the linkage plate 167 drives the card block 165 to retract. At this time, adjustment can be performed. After adjustment, release the pressing block 163, and the linkage plate 167 drives the card block 165 to reset through the reset spring 168, and the card block 165 is re-inserted into the card hole 3 to complete fixation.

[0033] Working principle: When in use, first open the upper plate 10, then turn the strap 8 placed in the fixed groove 5 to one side, and when opening the upper plate 10, the opening and closing block 12 can be used to facilitate opening the upper plate 10, place the mouse in the fixed groove 5, and place the mouse tail in the mouse tail groove 4, then cover the mouse with the strap 8 and place it in the empty groove 6, cover the upper plate 10 on the bottom plate 1, and after the upper plate 10 is covered on the bottom plate 1, the magnet 7 and the iron sheet 15 are adsorbed to complete the closure of the bottom plate 1 and the upper plate 10, and finally turn the strap 8 over to cover the upper plate 10, the upper surface of the upper plate 10 is provided with a Velcro hook surface 11, and the reverse side of the strap 8 is provided with a Velcro velvet surface 9, when the strap 8 is turned over to cover the top of the upper plate 10, the strap 8 is locked by magic The velvet surface 9 is pasted with the Velcro hook surface 11 on the top of the upper plate 10 to complete the fixation of the strap 8. Before fixing the strap 8, it is necessary to pull it slightly to the outside to ensure that the strap 8 covers the mouse, so as to restrict the mouse. The strap 8 is velvet and has a soft texture. The mouse is limited by fixing the strap 8 and the upper plate 10 to avoid the problem of causing harm to the mouse when limiting the position. After the upper plate 10 is fixed to the bottom plate 1, the spring column 13 will be inserted into the mouse tail groove 4 to limit the mouse tail. The spring column 13 has a built-in spring and can be retracted, thereby improving its ability to limit the mouse tail and further improving the ability of the device to limit the mouse. The front end of the bottom plate 1 is detachably installed with an auxiliary mechanism 16. A slot 2 is provided at the front end and clamping holes 3 are provided on the inner walls of both sides of the slot 2. A placement slot 162 is provided on both the upper and lower sides of the mouse tail placement plate 161. When installing the auxiliary mechanism 16, there is no need to separately face the front and back sides. At the same time, after the auxiliary mechanism 16 is installed on the bottom plate 1, the placement slot 162 is docked with the mouse tail slot 4, and the mouse tail after limiting can be placed in the placement slot 162. When in use, the mouse tail is placed in the placement slot 162. When injecting the tail vein, one-third of the mouse tail is generally selected for injection. The length of the placement slot 162 is roughly two-thirds of the length of most mouse tails. Therefore, it is convenient to find one-third of the mouse tail during injection, and place the mouse tail in the placement slot 162. The extra mouse tail is bent with the help of the mouse tail placement plate 161. The rat tail is injected through the bend, and this structural design makes the device more convenient to use and serves the purpose of auxiliary injection. At the same time, the device has the ability to adjust the length, thereby improving the applicability of the auxiliary mechanism 16. The length of the rat tail cannot be exactly the same, so one-third of the rat tail will not be in the same position. The auxiliary mechanism 16 has the ability to adjust the length, which can achieve better applicability. Press the pressing block 163 on one side of the rat tail placement plate 161, and the linkage plate 167 drives the card block 165 to retract. At this time, adjustment can be made. After adjustment, release the pressing block 163, and the linkage plate 167 drives the card block 165 to reset through the reset spring 168, and the card block 165 is re-inserted into the card hole 3 to complete fixation.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A tail vein injection device for small animals, comprising a base plate (1), characterized in that: The bottom of the front end of the base plate (1) is provided with a slot (2), the inner walls on both sides of the slot (2) are provided with clamping holes (3), the upper surface of the base plate (1) is provided with a fixing slot (5), the top of the base plate (1) is movably mounted with an upper plate (10), the lower surface of the upper plate (10) is provided with a limiting slot (14), and the rear ends of the fixing slot (5) and the limiting slot (14) respectively penetrate the base plate (1) and the upper plate (10); The design of the bottom plate (1) and the upper plate (10) enables the device to have a more convenient limiting capability, making it easier to limit the position of mice. At the same time, there is no need to squeeze the mice when limiting the position, thereby preventing the mice from being injured when limiting the position.

2. The tail vein injection device for small animals according to claim 1, characterized in that: A rat-tail groove (4) is provided at the front end of the bottom plate (1) above the slot (2); the rat-tail groove (4) is communicated with the fixing groove (5); a binding strap (8) is provided on the left side wall of the fixing groove (5); and a Velcro velvet surface (9) is provided on the upper surface of the binding strap (8).

3. The tail vein injection device for small animals according to claim 2, characterized in that: Magnets (7) are inlaid and installed at the front and rear ends of the right side of the upper surface of the base plate (1), and an empty slot (6) is opened on the upper surface of the base plate (1) between two groups of magnets (7), and the width of the empty slot (6) is greater than the width of the binding strap (8).

4. The tail vein injection device for small animals according to claim 1, characterized in that: A Velcro hook surface (11) is provided on the top of the upper plate (10), an opening and closing block (12) is fixedly installed on the right side of the upper plate (10), and iron sheets (15) are embedded and installed at the front and rear ends of the right side of the lower surface of the upper plate (10).

5. The tail vein injection device for small animals according to claim 4, characterized in that: A spring column (13) is fixedly mounted on the front end of the lower surface of the upper plate (10), the spring column (13) is matched with the rat tail groove (4), and the spring column (13) has a built-in spring that is retractable.

6. The tail vein injection device for small animals according to claim 1, characterized in that: An auxiliary mechanism (16) is detachably mounted on the front end of the base plate (1), and the auxiliary mechanism (16) comprises a rat tail placement plate (161) and an inserting plate (164). The rat tail placement plate (161) and the inserting plate (164) are fixedly mounted, the rat tail placement plate (161) is movably mounted on the front end of the base plate (1), and the inserting plate (164) is detachably mounted inside the slot (2).

7. The tail vein injection device for small animals according to claim 6, characterized in that: A pressing block (163) is movably mounted on the left side of the rat tail placement plate (161), and placement grooves (162) are provided on both the upper and lower sides of the rat tail placement plate (161), and the placement grooves (162) and the bottom of the rat tail groove (4) are located on the same straight line.

8. The tail vein injection device for small animals according to claim 6, characterized in that: A clamping block (165) is movably mounted on the left side of the plugging plate (164); a cavity (166) is provided inside the plugging plate (164) and the rat tail placement plate (161); a linkage plate (167) is movably mounted inside the cavity (166); the front and rear ends of the left side of the linkage plate (167) are respectively fixedly connected to the pressing block (163) and the clamping block (165); and a return spring (168) is fixedly mounted on the right side of the linkage plate (167).

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