Blood sampling device for experimental animals

Abstract

The invention discloses an experimental animal blood sampling device which comprises an operation table, a height adjusting assembly penetrating to the top of the operation table is arranged at the bottom of the operation table, a fixing assembly is arranged in the height adjusting assembly, and the upper side and the lower side of the fixing assembly are each provided with two angle adjusting assemblies in bilateral symmetry. The right side of the top of the operation table is fixedly connected with a blood sampling assembly. Through the arranged height adjusting assembly, the height of the animal on the operation table can be adjusted according to the actual size of the animal, subsequent fixing and blood sampling operation are facilitated, the universality of the device is improved, blood can be stably collected through the design of the negative pressure blood sampling tube, contact between the blood and outside air is reduced, and the blood sampling efficiency is improved. The angle adjusting assembly and the fixing assembly are arranged, so that the device can fix the experimental animal from multiple directions, and meanwhile, the animal can be prevented from being hurt due to too tight fixation.

Description

Technical Field

[0001] The invention relates to the technical field of blood sampling devices, and in particular to a blood sampling device for experimental animals. Background Art

[0002] The blood sampling device for experimental animals is a commonly used device in laboratories. Its design and use are intended to ensure the efficiency, safety and animal welfare of the blood collection process. The blood sampling device for experimental animals is a tool designed for safely and efficiently collecting blood samples from experimental animals (such as mice, rats, etc.) in a laboratory environment. It usually includes a stable operating platform for placing and fixing experimental animals to ensure stability during the blood collection process. It plays an important role in biomedical research and teaching experiments.

[0003] Existing blood sampling devices for experimental animals can only be used for experimental animals of a specific size. They may not be effectively used for other animals with greatly different sizes, resulting in the need to purchase a variety of blood sampling devices of different specifications, which increases costs. At the same time, they are unable to effectively fix and clamp the animals in all directions, increasing the possibility of their struggling to escape. In addition, the clamping force of the clamp on the animal cannot be adjusted, resulting in damage to the animal due to over-tightening, and the animal may fall out of the fixing device due to over-loosening. Summary of the invention

[0004] The present invention provides a blood sampling device for experimental animals to solve the problems raised in the above background technology.

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

[0006] A blood sampling device for experimental animals comprises an operating table, a PLC controller is fixedly connected to the left side of the top of the operating table, legs are fixedly connected to the left and right sides of the bottom of the operating table, anti-slip pads are fixedly connected to the bottoms of the left and right legs, a height adjustment component is provided at the bottom of the operating table extending to the top, a fixing component is provided inside the height adjustment component, two left-right symmetrical angle adjustment components are provided on the upper and lower sides of the fixing component, and a blood sampling component is fixedly connected to the right side of the top of the operating table.

[0007] A further improvement of the technical solution of the present invention is that the height adjustment component includes a motor 1, the top of the motor 1 is fixedly connected to the bottom rear side of the operating table, the output end of the motor 1 is fixedly connected to a pulley 1, the bottom of the pulley 1 is fixedly connected to a pulley 3, threaded rods are rotatably connected on both the left and right sides of the top rear side of the operating table, the bottom of the threaded rod on the left side penetrates through the bottom of the operating table and is fixedly connected to a pulley 2, the outer walls of the pulley 2 and the pulley 1 are sleeved with a belt 1, the bottom of the threaded rod on the right side penetrates through the bottom of the operating table and is fixedly connected to a pulley 4, the outer walls of the pulley 3 and the pulley 4 are sleeved with a belt 2, and two left-right symmetrical sliding rods are fixedly connected to the top front side of the operating table, and the outer walls of the left and right threaded rods are threadedly connected to a lifting frame that is slidably connected to the outer walls of the left and right sliding rods.

[0008] A further improvement of the technical solution of the present invention is that the tops of the two left and right threaded rods and the two left and right sliding rods are fixedly connected to limit blocks, and the PLC controller is electrically connected to the motor.

[0009] A further improvement of the technical solution of the present invention is that: the fixing component includes motor 2, the right side of motor 2 is fixedly connected to the rear of the left side wall of the lifting frame, the rear sides of the left and right inner walls of the lifting frame are rotatably connected with a double-headed screw, the output end of motor 2 penetrates the left inner wall of the lifting frame and is fixedly connected to the double-headed screw, the left and right sides of the outer wall of the double-headed screw are threadedly connected with threaded blocks, the rear side walls of the left and right threaded blocks are fixedly connected with sliders, and the rear inner wall of the lifting frame is provided with a guide groove slidably connected to the outer walls of the left and right sliders.

[0010] A further improvement of the technical solution of the present invention is that: the front side walls of the left and right threaded blocks are fixedly connected to moving rods, the opposite surfaces of the left and right moving rods at one end away from the threaded blocks are fixedly connected to arc-shaped fixed blocks, and the opposite surfaces of the left and right arc-shaped fixed blocks are fixedly connected to pressure sensors 1.

[0011] A further improvement of the technical solution of the present invention is that the PLC controller is electrically connected to the second motor and the first pressure sensor respectively.

[0012] A further improvement of the technical solution of the present invention is that: the angle adjustment assembly includes two fixed plates, and the front and rear two fixed plates are fixedly connected to the arc-shaped fixed block on one side close to the moving rod, and the opposite surfaces of the front and rear two fixed plates are rotatably connected with a rotating shaft, the rear end of the rotating shaft penetrates into the rear side wall of the rear fixed plate and is fixedly connected with a worm gear, the side of the worm gear close to the arc-shaped fixed block is meshedly connected with a worm, the side of the worm gear close to the moving rod is rotatably connected with a side plate fixedly connected to the rear side wall of the arc-shaped fixed block, the side of the side plate away from the worm is fixedly connected with motor three, the output end of motor three penetrates through the side plate and is fixedly connected to the worm, and the middle part of the outer wall of the rotating shaft is fixedly connected with an arc-shaped clamping block.

[0013] A further improvement of the technical solution of the present invention is that a second pressure sensor is fixedly connected to the side of the arc-shaped clamping block in contact with the animal, and the PLC controller is electrically connected to the second pressure sensor and the third motor respectively.

[0014] A further improvement of the technical solution of the present invention is that the blood collection component includes a placement seat, the bottom of which is fixedly connected to the top right side of the operating table, the top of the placement seat is provided with a plurality of jacks which are equidistant front and back, a negative pressure blood collection tube is plugged into the inside of the jack, a blood collection hose is fixedly connected to the top of the negative pressure blood collection tube, and a blood collection needle is fixedly connected to the end of the blood collection hose away from the negative pressure blood collection tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention is provided with a height adjustment component, which can adjust the height of the animal on the operating table according to the actual size of the animal, thereby facilitating subsequent fixation and blood collection operations, improving the versatility of the device, and reducing the cost of purchasing new equipment. At the same time, the design of the negative pressure blood collection tube ensures that the blood can be collected stably. Due to the existence of negative pressure, the blood can flow smoothly into the blood collection tube, reducing the contact of the blood with the outside air during the collection process, and reducing the risk of blood contamination.

[0017] At the same time, the experimental animals can be clamped and fixed from multiple directions through the angle adjustment component to further fix the position of the animals, prevent the animals from moving around during the blood collection process, and ensure the smooth progress of the blood collection process. Through the set fixing components, the fixing force can be adjusted according to the body size and state of the animals to avoid damage to the animals due to over-tightening, while ensuring that the animals will not break free. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the blood sampling device for experimental animals of the present invention;

[0019] Figure 2 It is a schematic diagram of the rear viewing angle structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the height adjustment component of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the angle adjustment component of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the blood collection component of the present invention. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods:

[0025] Embodiment 1

[0026] like Figure 1 , Figure 2 As shown, the present invention provides a blood sampling device for experimental animals, including an operating table 10, a PLC controller 11 is fixedly connected to the left side of the top of the operating table 10, legs 12 are fixedly connected to the left and right sides of the bottom of the operating table 10, and anti-slip pads 13 are fixedly connected to the bottoms of the left and right legs 12. The bottom of the operating table 10 is provided with a height adjustment component 2 that runs through the top thereof, a fixing component 3 is arranged inside the height adjustment component 2, and two left-right symmetrical angle adjustment components 4 are arranged on the upper and lower sides of the fixing component 3, and a blood sampling component 5 is fixedly connected to the right side of the top of the operating table 10.

[0027] The operating table 10 serves as the basic supporting structure of the entire device. A PLC controller 11 is fixedly connected to the left side of the top of the operating table 10. The PLC controller 11 is used to control the coordinated work of various motors and sensors in the entire device. Legs 12 are fixedly connected to the left and right sides of the bottom of the operating table 10. The legs 12 provide stable support for the device. Anti-skid pads 13 are fixedly connected to the bottoms of the left and right legs 12. The anti-skid pads 13 can prevent the device from sliding during use and ensure the stability of operation.

[0028] like Figure 3As shown, the height adjustment component 2 includes a motor 20, the top of which is fixedly connected to the bottom rear side of the operating platform 10, the output end of the motor 20 is fixedly connected to a pulley 21, the bottom of the pulley 21 is fixedly connected to a pulley three 23, threaded rods 25 are rotatably connected to the left and right sides of the top rear side of the operating platform 10, the bottom of the left threaded rod 25 penetrates through the bottom of the operating platform 10 and is fixedly connected to a pulley two 22, the outer walls of the pulley two 22 and the pulley one 21 are provided with a belt one, the bottom of the right threaded rod 25 penetrates through the bottom of the operating platform 10 and is fixedly connected to a pulley four 24, the outer walls of the pulley three 23 and the pulley four 24 are provided with a belt two, and two left-right symmetrical sliding rods 27 are fixedly connected to the top front side of the operating platform 10, and the outer walls of the left and right threaded rods 25 are threadedly connected to a lifting frame 28 that is slidably connected to the outer walls of the left and right sliding rods 27.

[0029] like Figure 3 As shown, the tops of the left and right threaded rods 25 and the left and right sliding rods 27 are fixedly connected to the limit blocks 26, and the PLC controller 11 is electrically connected to the motor 1 20.

[0030] When the height of the animal needs to be adjusted, the motor 20 in the height adjustment component 2 is started through the PLC controller 11, and the motor 20 drives the pulley 21 to rotate. Since the pulley 21 and the pulley 22 are connected by the belt 1, the pulley 21 is fixed to the pulley 3 23, and the pulley 3 23 and the pulley 4 24 are connected by the belt 2, the rotation of the motor 20 can make the threaded rods 25 on the left and right sides rotate synchronously. With the assistance of the sliding rod 27, the lifting frame 28 threadedly connected to the threaded rod 25 moves up and down along the sliding rod 27. The movement range of the lifting frame 28 is guaranteed by the limit blocks 26 on the threaded rod 25 and the top of the sliding rod 27. Through the set height adjustment component 2, the height of the animal on the operating table 10 can be adjusted according to the actual size of the animal, which is convenient for subsequent fixing and blood collection operations, improves the versatility of the device, and reduces the cost of purchasing new equipment.

[0031] Embodiment 2

[0032] The difference between this embodiment and the first embodiment is that Figure 4 As shown, the fixing component 3 includes a motor 2 30, the right side of the motor 2 30 is fixedly connected to the rear of the left side wall of the lifting frame 28, and the rear sides of the left and right inner walls of the lifting frame 28 are rotatably connected with a double-headed screw 31, the output end of the motor 2 30 passes through the left inner wall of the lifting frame 28 and is fixedly connected to the double-headed screw 31, the left and right sides of the outer wall of the double-headed screw 31 are threadedly connected with thread blocks 34, the rear side walls of the left and right thread blocks 34 are fixedly connected with sliders 33, and the rear inner wall of the lifting frame 28 is provided with a guide groove 32 that is slidably connected to the outer walls of the left and right sliders 33.

[0033] like Figure 4 As shown, the front side walls of the left and right threaded blocks 34 are fixedly connected with a moving rod 35, the opposite surfaces of the ends of the left and right moving rods 35 away from the threaded blocks 34 are fixedly connected with an arc-shaped fixed block 36, and the opposite surfaces of the left and right arc-shaped fixed blocks 36 are fixedly connected with a pressure sensor 1 37. The PLC controller 11 is electrically connected to the motor 2 30 and the pressure sensor 1 37, respectively.

[0034] After the height of the animal is adjusted, the PLC controller 11 starts the motor 2 30 in the fixing component 3, and the motor 2 30 drives the double-headed screw 31 to rotate. The rotation of the double-headed screw 31 causes the threaded blocks 34 on the left and right sides to move in opposite directions along the double-headed screw 31 with the cooperation of the slider 33 and the guide groove 32. The threaded blocks 34 drive the arc-shaped fixing block 36 to move through the moving rod 35. When the arc-shaped fixing block 36 contacts the experimental animal, the pressure sensor 1 37 on its surface senses the pressure and transmits the signal to the PLC controller 11. The PLC controller 11 controls the motor 2 30 to stop rotating according to the pressure signal, so that the arc-shaped fixing block 36 fixes the animal with appropriate force. Through the setting of the fixing component 3, the fixing force can be adjusted according to the body shape and state of the animal to avoid damage to the animal due to over-tightening, while ensuring that the animal will not break free.

[0035] Embodiment 3

[0036] The difference between this embodiment and the first or second embodiment is that Figure 5 As shown, the angle adjustment assembly 4 includes two fixed plates 40, and the front and rear fixed plates 40 are fixedly connected to the arc-shaped fixed block 36 on one side close to the moving rod 35, and the opposite surfaces of the front and rear fixed plates 40 are rotatably connected with a rotating shaft 41, and the rear end of the rotating shaft 41 penetrates into the rear side wall of the rear side fixed plate 40 and is fixedly connected with a worm gear 42, and the worm gear 42 is meshedly connected with a worm 43 on the side close to the arc-shaped fixed block 36, and the worm 43 is rotatably connected with a side plate 44 fixedly connected to the rear side wall of the arc-shaped fixed block 36 on the side close to the moving rod 35, and a motor three 45 is fixedly connected to the side plate 44 away from the worm 43, and the output end of the motor three 45 penetrates the side plate 44 and is fixedly connected to the worm 43, and an arc-shaped clamping block 46 is fixedly connected to the middle part of the outer wall of the rotating shaft 41.

[0037] like Figure 5 As shown, a second pressure sensor 47 is fixedly connected to the side of the arc-shaped clamping block 46 that contacts the animal, and the PLC controller 11 is electrically connected to the second pressure sensor 47 and the third motor 45 respectively.

[0038] After fixing the animal by the fixing component 3, the PLC controller 11 starts the motor three 45 in the angle adjustment component 4, and the motor three 45 drives the worm 43 to rotate, and the worm 43 engages with the worm wheel 42, so that the rotating shaft 41 fixed to the worm wheel 42 rotates, and the rotating shaft 41 drives the arc clamping block 46 to rotate. The pressure sensor two 47 on the arc clamping block 46 senses the pressure of contact with the animal and transmits the signal to the PLC controller 11. The PLC controller 11 controls the motor three 45 according to the pressure signal, adjusts the angle and clamping force of the arc clamping block 46, and through the angle adjustment component 4 set, the device can clamp and fix the experimental animal from multiple directions, further fix the position of the animal, prevent the animal from moving around during the blood collection process, and ensure the smooth progress of the blood collection process.

[0039] Embodiment 4

[0040] The difference between this embodiment and any one of the embodiments 1 to 3 is that Figure 6 As shown, the blood collection component 5 includes a placement seat 50, the bottom of which is fixedly connected to the top right side of the operating table 10, and the top of the placement seat 50 is provided with a plurality of sockets 51 equidistant from front to back, a negative pressure blood collection tube 52 is plugged into the socket 51, a blood collection hose 53 is fixedly connected to the top of the negative pressure blood collection tube 52, and a blood collection needle 54 is fixedly connected to the end of the blood collection hose 53 away from the negative pressure blood collection tube 52.

[0041] When using the blood collection assembly 5 for blood collection, the blood collection needle 54 is inserted into the blood vessel of the experimental animal. Under the action of the pressure difference, the blood flows into the negative pressure blood collection tube 52 inserted in the socket 51 of the placement seat 50 through the blood collection hose 53, completing the blood collection process. The design of the negative pressure blood collection tube 52 ensures that the blood can be collected stably. Due to the existence of negative pressure, the blood can flow smoothly into the blood collection tube, reducing the contact of the blood with the outside air during the collection process and reducing the risk of blood contamination.

[0042] It should be noted that the PLC controller 11, the pressure sensor 1 37, the pressure sensor 2 47, and the negative pressure blood collection tube 52 are all prior arts and will not be described in detail here.

[0043] The working principle of the blood sampling device for experimental animals in the present invention is as follows:

[0044] When the height of the animal needs to be adjusted, the motor 20 in the height adjustment component 2 is started through the PLC controller 11, and the motor 20 drives the pulley 21 to rotate. Since the pulley 21 and the pulley 22 are connected by the belt 1, the pulley 21 is fixed to the pulley 3 23, and the pulley 3 23 and the pulley 4 24 are connected by the belt 2, the rotation of the motor 20 can make the threaded rods 25 on the left and right sides rotate synchronously. With the assistance of the sliding rod 27, the lifting frame 28 threadedly connected to the threaded rod 25 moves up and down along the sliding rod 27. The movement range of the lifting frame 28 is guaranteed by the limit blocks 26 on the threaded rod 25 and the top of the sliding rod 27. Through the set height adjustment component 2, the height of the animal on the operating table 10 can be adjusted according to the actual size of the animal, which is convenient for subsequent fixing and blood collection operations, improves the versatility of the device, and reduces the cost of purchasing new equipment.

[0045] After the height of the animal is adjusted, the PLC controller 11 starts the motor 2 30 in the fixing component 3, and the motor 2 30 drives the double-headed screw 31 to rotate. The rotation of the double-headed screw 31 causes the threaded blocks 34 on the left and right sides to move in opposite directions along the double-headed screw 31 with the cooperation of the slider 33 and the guide groove 32. The threaded blocks 34 drive the arc-shaped fixing block 36 to move through the moving rod 35. When the arc-shaped fixing block 36 contacts the experimental animal, the pressure sensor 1 37 on its surface senses the pressure and transmits the signal to the PLC controller 11. The PLC controller 11 controls the motor 2 30 to stop rotating according to the pressure signal, so that the arc-shaped fixing block 36 fixes the animal with appropriate force. Through the setting of the fixing component 3, the fixing force can be adjusted according to the body shape and state of the animal to avoid damage to the animal due to over-tightening, while ensuring that the animal will not break free.

[0046] Furthermore, the PLC controller 11 starts the motor three 45 in the angle adjustment component 4, and the motor three 45 drives the worm 43 to rotate, and the worm 43 engages with the worm wheel 42, so that the rotating shaft 41 fixed to the worm wheel 42 rotates, and the rotating shaft 41 drives the arc clamping block 46 to rotate. The pressure sensor two 47 on the arc clamping block 46 senses the pressure of contact with the animal and transmits the signal to the PLC controller 11. The PLC controller 11 controls the motor three 45 according to the pressure signal, adjusts the angle and clamping force of the arc clamping block 46, and through the angle adjustment component 4 set, the device can clamp and fix the experimental animal from multiple directions, further fix the position of the animal, prevent the animal from moving around during the blood collection process, and ensure the smooth progress of the blood collection process.

[0047] The blood collection component 5 is further used to collect blood. Specifically, the blood collection needle 54 can be inserted into the blood vessel of the experimental animal. Under the action of the pressure difference, the blood flows into the negative pressure blood collection tube 52 inserted in the socket 51 of the placement seat 50 through the blood collection hose 53, thereby completing the blood collection process. The design of the negative pressure blood collection tube 52 ensures that the blood can be collected stably. Due to the existence of negative pressure, the blood can flow smoothly into the blood collection tube, which reduces the contact of the blood with the outside air during the collection process and reduces the risk of blood contamination.

[0048] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A blood sampling device for experimental animals, comprising an operating table (10), characterized in that: A PLC controller (11) is fixedly connected to the left side of the top of the operating table (10); a height adjustment component (2) is provided at the bottom of the operating table (10) and extends to the top thereof; a fixing component (3) is provided inside the height adjustment component (2); two left-right symmetrical angle adjustment components (4) are provided on both the upper and lower sides of the fixing component (3); and a blood collection component (5) is fixedly connected to the right side of the top of the operating table (10).

2. The blood sampling device for experimental animals according to claim 1, characterized in that: The height adjustment assembly (2) comprises a motor 1 (20), the top of the motor 1 (20) is fixedly connected to the bottom rear side of the operating table (10), the output end of the motor 1 (20) is fixedly connected to a pulley 1 (21), the bottom of the pulley 1 (21) is fixedly connected to a pulley 3 (23), the top rear side of the operating table (10) is rotatably connected to threaded rods (25) on both sides, the bottom of the left threaded rod (25) passes through the bottom of the operating table (10) and is fixedly connected to a pulley 2 (22), The outer walls of the belt pulley 2 (22) and the belt pulley 1 (21) are sleeved with belt 1, the bottom of the right threaded rod (25) penetrates the bottom of the operating table (10) and is fixedly connected with the belt pulley 4 (24), the outer walls of the belt pulley 3 (23) and the belt pulley 4 (24) are sleeved with belt 2, and the top front side of the operating table (10) is fixedly connected with two left-right symmetrical sliding rods (27), and the outer walls of the left and right threaded rods (25) are threadedly connected with a lifting frame (28) slidably connected to the outer walls of the left and right sliding rods (27).

3. The blood sampling device for experimental animals according to claim 2, characterized in that: The tops of the two left and right threaded rods (25) and the two left and right sliding rods (27) are fixedly connected to the limit blocks (26), and the PLC controller (11) is electrically connected to the motor 1 (20).

4. The blood sampling device for experimental animals according to claim 3, characterized in that: The fixing assembly (3) comprises a second motor (30), the right side of which is fixedly connected to the rear of the left side wall of the lifting frame (28), and the rear sides of the left and right inner walls of the lifting frame (28) are rotatably connected with double-headed screws (31), the output end of the second motor (30) passes through the left inner wall of the lifting frame (28) and is fixedly connected to the double-headed screw (31), the left and right sides of the outer wall of the double-headed screw (31) are both threadedly connected with thread blocks (34), the rear side walls of the left and right thread blocks (34) are both fixedly connected with sliders (33), and the rear inner wall of the lifting frame (28) is provided with a guide groove (32) slidably connected to the outer walls of the left and right sliders (33).

5. The blood sampling device for experimental animals according to claim 4, characterized in that: The front side walls of the left and right threaded blocks (34) are fixedly connected to a moving rod (35), the opposite surfaces of one end of the left and right moving rods (35) away from the threaded blocks (34) are fixedly connected to an arc-shaped fixed block (36), and the opposite surfaces of the left and right arc-shaped fixed blocks (36) are fixedly connected to a pressure sensor 1 (37).

6. The blood sampling device for experimental animals according to claim 5, characterized in that: The PLC controller (11) is electrically connected to the second motor (30) and the first pressure sensor (37) respectively.

7. The blood sampling device for experimental animals according to claim 5, characterized in that: The angle adjustment assembly (4) comprises two fixing plates (40), wherein the front and rear fixing plates (40) are fixedly connected to the arc-shaped fixing block (36) at one side close to the moving rod (35), and the opposite surfaces of the front and rear fixing plates (40) are rotatably connected to a rotating shaft (41), and the rear end of the rotating shaft (41) passes through the rear side wall of the rear fixing plate (40) and is fixedly connected to a worm gear (42), and the side of the worm gear (42) close to the arc-shaped fixing block (36) is meshingly connected to a worm (43), and the side of the worm gear (43) close to the moving rod (35) is rotatably connected to a side plate (44) fixedly connected to the rear side wall of the arc-shaped fixing block (36), and the side of the side plate (44) away from the worm gear (43) is fixedly connected to a motor three (45), and the output end of the motor three (45) passes through the side plate (44) and is fixedly connected to the worm gear (43), and the middle part of the outer wall of the rotating shaft (41) is fixedly connected to an arc-shaped clamping block (46).

8. The blood sampling device for experimental animals according to claim 7, characterized in that: The side of the arc-shaped clamping block (46) in contact with the animal is fixedly connected with a second pressure sensor (47), and the PLC controller (11) is electrically connected to the second pressure sensor (47) and the third motor (45) respectively.

9. The blood sampling device for experimental animals according to claim 1, characterized in that: The blood sampling assembly (5) comprises a placement seat (50), the bottom of which is fixedly connected to the top right side of the operating table (10), the top of which is provided with a plurality of jacks (51) equidistant from front to back, a negative pressure blood sampling tube (52) inserted into the jacks (51), the top of which is fixedly connected to a blood sampling hose (53), and one end of the blood sampling hose (53) away from the negative pressure blood sampling tube (52) is fixedly connected to a blood sampling needle (54).

10. The blood sampling device for experimental animals according to claim 1, characterized in that: The bottom of the operating table (10) is fixedly connected to supporting legs (12) on both left and right sides, and the bottoms of the two supporting legs (12) are fixedly connected to anti-slip pads (13).

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