Animal blood extraction device

Abstract

The invention provides an animal blood extraction device, and relates to the technical field of blood extraction, the animal blood extraction device comprises a positioning leg ring, an annular air bag for positioning is fixedly arranged in the positioning leg ring; the number of the positioning leg rings is two, a connecting frame is fixedly arranged outside the two positioning leg rings, a connecting guide rod is fixedly erected outside the connecting frame, and a positioning hinged support capable of being fixed through a jackscrew is arranged outside the connecting guide rod in a sliding mode. A swing seat is fixedly arranged on one side of the orientator, and a connecting screw rod is fixedly arranged outside the swing seat; the stable positioning blood drawing structure is provided, the blood taking needle can be fixed, the positioning hinged support can rotate and slide outside the connecting guide rod, left-right swing and up-down adjustment are achieved, fixing can be achieved through the jackscrew, the orientator can swing up and down and be locked and fixed through the threaded cap, angle adjustment is achieved, blood can be conveniently drawn from a designated position, and the blood drawing efficiency is improved. The blood taking needle can be self-locked and fixed through the self-locking block, the blood taking depth is locked, and the positioning function of an existing blood taking mode is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of blood extraction, and particularly relates to an animal blood extraction device. Background Art

[0002] When conducting tests on new drugs, in order to ensure an effect similar to that in humans, the drugs are generally fed or injected into experimental animals such as dogs and monkeys, and a blood collection device is used regularly to extract the blood in the test object to analyze the drug concentration in the blood, and then to detect the effect of the drug.

[0003] The currently used extraction devices have the following disadvantages: 1. It is necessary to use a bandage to fix the blood collection needle, with poor stability, lacking a stable positioning and blood extraction structure, and being inconvenient to adjust according to needs; 2. Lacking an active extraction function and injecting the blood into a sample containing structure after extraction; 3. It is inconvenient to automatically switch the sample containing structure for inputting blood. Summary of the Invention

[0004] In view of this, in view of the above deficiencies in the prior art, the present invention provides an animal blood extraction device.

[0005] The present invention provides an animal blood extraction device, specifically including: a positioning leg ring, inside which a ring-shaped airbag for positioning is fixedly arranged; the number of positioning leg rings is two groups, and a connecting frame is fixedly arranged outside the two groups of positioning leg rings, a connecting guide rod is fixedly arranged outside the connecting frame, and a positioning hinge seat that can be fixed by a setscrew is slidably arranged outside the connecting guide rod; an orientator, on one side of which a swinging seat is fixedly arranged, a connecting screw rod is fixedly arranged outside the swinging seat, and the connecting screw rod is fixed outside the positioning hinge seat through a threaded nut; a blood collection needle slides in the orientator; a distributor seat, on the top of which a loading seat is fixedly arranged in cooperation with a bracket, a control shaft is rotatably arranged between the distributor seat and the loading seat, a bottle changing frame is fixedly arranged at the top of the control shaft, the outer end of the bottle changing frame is a six-group equally spaced sliding cylinder structure, and a sample bottle is arranged inside the sliding cylinder structure; on the side of the top of the distributor seat, an installation frame is fixedly arranged, a vertical guide rod is fixedly arranged on one side of the top of the installation frame, a control frame is slidably arranged outside the vertical guide rod, the control frame is a U-shaped structure, a blood extraction piston is fixedly arranged above the inside of the control frame, two one-way valves B are fixedly arranged at the top of the blood extraction piston, and a pipeline is arranged at the top of one of the one-way valves B and connected to the tail end of the blood collection needle.

[0006] Optionally, air release valves are fixedly arranged outside the positioning leg rings. A sliding valve core is arranged in the air release valve in a limited sliding manner. A handle structure is arranged on the side of the sliding valve core and the air release valve. A spring is fixedly arranged between the two handle structures on both sides. By pinching the two handle structures, the holes in the sliding valve core are aligned with the holes in the air release valve, and the gas in the annular airbag can be released.

[0007] Optionally, two one-way valves A are fixedly arranged on one side of the connecting frame. The one-way valves A are respectively communicated with the two annular airbags. An air injection bag is connected outside the two one-way valves A. A check valve is arranged inside the air inlet opened at the tail end of the air injection bag.

[0008] Optionally, two self-locking blocks are slidably arranged inside the orientator. The two self-locking blocks are combined by a spring. The outer part of the blood collection needle is of a corrugated structure, and the self-locking blocks are fitted with the corrugated structure outside the blood collection needle.

[0009] Optionally, an internal ratchet gear and a hexagonal block are fixedly arranged outside the control shaft. In a bracket between the dispenser seat and the loading seat, two spring rods are installed. One end of each spring rod is fixedly provided with a positioning push block, and the positioning push block is attached to the outside of the hexagonal block. A slideway is fixedly arranged at the bottom of the loading seat, and a round hole is opened at the position where the loading seat is aligned with the slideway.

[0010] Optionally, a driving electric cylinder is fixedly arranged at the top of the dispenser seat. The telescopic end of the driving electric cylinder is connected with a driving rack. The driving rack is engaged with the internal ratchet gear. When the driving electric cylinder extends, the driving rack drives the internal ratchet gear to rotate idly. When the driving electric cylinder contracts, the driving rack drives the internal ratchet gear to rotate 60 degrees.

[0011] Optionally, a hydraulic piston A is fixedly arranged below one side of the mounting frame. A spring is sleeved outside the telescopic end of the hydraulic piston A. The hydraulic piston A is axially aligned with the driving electric cylinder. A hydraulic piston B is fixedly arranged above one side of the mounting frame. The hydraulic piston A and the hydraulic piston B are connected by a pipeline. A connecting piece is fixedly arranged at the telescopic end of the hydraulic piston B, and the connecting piece slides outside the telescopic end of the blood extraction piston. A puncture needle is fixedly arranged at the bottom of the control frame, and a pipeline connection is arranged between the puncture needle and another one-way valve B at the top of the blood extraction piston. A spring is arranged between the telescopic end of the blood extraction piston and the lower part inside the control frame.

[0012] Optionally, a drain pipe is fixedly arranged at the top of the dispenser seat, and the bottom of the drain pipe is aligned above a sliding cylinder structure of the bottle changing rack.

[0013] Optionally, the middle of the top of the sample bottle is of an opening structure, and a rubber membrane is fixedly arranged in the middle of the opening structure.

[0014] The beneficial effects are as follows: 1. The present invention provides a stable positioning blood drawing structure. The blood collection needle can be fixed. The positioning hinge seat can rotate and slide outside the connecting guide rod to achieve left - right swing and up - down adjustment, and can be fixed by a set screw. The orientator can swing up and down and is locked and fixed by a threaded cap to achieve angle adjustment for blood collection at a specified position. The blood collection needle can be self - locked and fixed by a self - locking block to lock the blood collection depth. Inserting the blood collection needle into the animal vein can achieve positioning blood collection.

[0015] 2. The present invention has an active blood collection function. The driving electric cylinder drives the driving rack to move. Through the arrangement and distribution of each component, an execution effect is generated. The puncture needle penetrates the rubber film on the top of the sample bottle and pierces into the sample bottle. When the control frame touches the sample bottle, it cannot move, and the connecting piece continues to descend, stretching the blood extraction piston to generate negative pressure, and drawing blood from the blood collection needle. The hydraulic piston B resets, and then the blood extraction piston contracts to input the blood to the puncture needle and inject it into the sample bottle.

[0016] 3. A control shaft is set to be able to switch the sample bottle. When the driving rack resets, it drives the internal ratchet gear to rotate 60 degrees. The control shaft drives the hexagonal block to rotate 60 degrees synchronously. The hexagonal block cooperates with the positioning push block to be self - locked and maintains stability when the driving rack disengages from the internal ratchet gear, enabling the bottle changing rack to push the sample bottle forward by one station. The sample bottle filled with blood moves to the slideway and falls through the round hole into the slideway and is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 shows a three - dimensional structure schematic diagram according to an embodiment of the present invention; Figure 2 shows an axonometric structure schematic diagram according to an embodiment of the present invention; Figure 3 shows a three - dimensional structure schematic diagram of a connecting frame according to an embodiment of the present invention; Figure 4 shows an embodiment according to the present invention Figure 3 from another angle structure schematic diagram; Figure 5 shows an embodiment according to the present invention Figure 3 three - dimensional disassembled structure schematic diagram; Figure 6 shows a three - dimensional sectional structure schematic diagram of an orientator according to an embodiment of the present invention; Figure 7 shows an assembly structure schematic diagram of a distributor seat according to an embodiment of the present invention; Figure 8 shows an embodiment according to the present invention Figure 7 three - dimensional disassembled structure schematic diagram; Figure 9 shows a three - dimensional structure schematic diagram of a control frame according to an embodiment of the present invention.

[0018] List of Reference Numerals 1. Positioning leg ring; 101. Air release valve; 102. Sliding spool; 103. Annular airbag; 2. Connecting frame; 201. Connecting guide rod; 202. Positioning hinge seat; 203. Set screw; 204. Check valve A; 205. Inflating airbag; 3. Orientator; 301. Swing seat; 302. Connecting screw; 303. Self-locking block; 304. Blood collection needle; 305. Threaded cap; 4. Distributor seat; 401. Loading seat; 402. Control shaft; 403. Internal ratchet gear; 404. Hexagonal block; 405. Spring rod; 406. Positioning push block; 407. Slideway; 5. Bottle changing rack; 6. Driving electric cylinder; 601. Driving rack; 7. Mounting frame; 701. Hydraulic piston A; 702. Hydraulic piston B; 703. Connecting piece; 704. Vertical guide rod; 705. Control frame; 706. Puncture needle; 707. Blood extraction piston; 708. Check valve B; 8. Drain pipe; 9. Sample bottle. Detailed Embodiment

[0019] In order to make the objectives, solutions, and advantages of the technical solution of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments of the present invention.

[0020] Embodiment 1: Please refer to Figures 1 to 9 as shown: The present invention provides an animal blood extraction device, comprising: a positioning leg ring 1, inside which an annular airbag 103 for positioning is fixedly arranged; there are two groups of positioning leg rings 1, and a connecting frame 2 is fixedly arranged outside the two groups of positioning leg rings 1. An outer fixing frame of the connecting frame 2 is provided with a connecting guide rod 201, and a positioning hinge seat 202 that can be fixed by a setscrew 203 is slidably arranged outside the connecting guide rod 201; an orientator 3, on one side of which a swinging seat 301 is fixedly arranged. An outer fixing frame of the swinging seat 301 is provided with a connecting screw 302, and the connecting screw 302 is fixed outside the positioning hinge seat 202 through a threaded cap 305; a blood collection needle 304 slides in the orientator 3; a dispenser seat 4, on the top of which a loading seat 401 is fixedly arranged in cooperation with a bracket. A control shaft 402 is rotatably arranged between the dispenser seat 4 and the loading seat 401. A bottle changing rack 5 is fixedly arranged at the top of the control shaft 402. The outer end of the bottle changing rack 5 is a sliding cylinder structure connected at equal intervals in six groups, and a sample bottle 9 is arranged inside the sliding cylinder structure; on the side of the top of the dispenser seat 4, an installation frame 7 is fixedly arranged. On one side of the top of the installation frame 7, a vertical guide rod 704 is fixedly arranged. A control frame 705 is slidably arranged outside the vertical guide rod 704. The control frame 705 is of a U-shaped structure. Above the inside of the control frame 705, a blood extraction piston 707 is fixedly arranged. At the top of the blood extraction piston 707, two one-way valves B708 are fixedly arranged. One of the one-way valves B708 is connected to the tail end of the blood collection needle 304 through a pipeline.

[0021] Wherein, air release valves 101 are fixedly arranged outside the positioning leg rings 1. A sliding valve core 102 is arranged in the air release valves 101 in a limited sliding manner. A handle structure is arranged on the side of the sliding valve core 102 and the air release valves 101, and a spring is fixedly arranged between the two handle structures on both sides; by pinching the two handle structures, the holes in the sliding valve core 102 are aligned with the holes in the air release valves 101, and the gas in the annular airbag 103 can be released.

[0022] Wherein, two one-way valves A204 are fixedly arranged on one side of the connecting frame 2. The two one-way valves A204 are respectively communicated with the two annular airbags 103. An air inflation bag 205 is connected outside the two one-way valves A204, and a check valve is arranged inside the air inlet opened at the tail end of the air inflation bag 205.

[0023] Wherein, two self-locking blocks 303 are slidably arranged inside the orientator 3, and the two self-locking blocks 303 are combined through a spring; the outside of the blood collection needle 304 is of a corrugated structure, and the self-locking blocks 303 are fitted with the corrugated structure outside the blood collection needle 304.

[0024] Among them, an internal ratchet gear 403 and a hexagonal block 404 are fixedly arranged outside the control shaft 402; in a bracket between the dispenser seat 4 and the loading seat 401, two groups of spring rods 405 are installed. One end of the spring rod 405 is fixedly provided with a positioning push block 406, and the positioning push block 406 fits outside the hexagonal block 404; a slideway 407 is fixedly arranged at the bottom of the loading seat 401, and a round hole is opened at the position of the loading seat 401 aligned with the slideway 407.

[0025] Among them, a driving electric cylinder 6 is fixedly arranged at the top of the dispenser seat 4, and a driving rack 601 is connected to the telescopic end of the driving electric cylinder 6; the driving rack 601 meshes with the internal ratchet gear 403. When the driving electric cylinder 6 extends, the driving rack 601 drives the internal ratchet gear 403 to rotate idly. When the driving electric cylinder 6 contracts, the driving rack 601 drives the internal ratchet gear 403 to rotate 60 degrees.

[0026] Among them, a hydraulic piston A701 is fixedly arranged below one side of the mounting frame 7, and a spring is sleeved outside the telescopic end of the hydraulic piston A701; the hydraulic piston A701 is axially aligned with the driving electric cylinder 6; a hydraulic piston B702 is fixedly arranged above one side of the mounting frame 7, and the hydraulic piston A701 and the hydraulic piston B702 are connected by a pipeline; a connecting piece 703 is fixedly arranged at the telescopic end of the hydraulic piston B702, and the connecting piece 703 slides outside the telescopic end of the blood extraction piston 707; a puncture needle 706 is fixedly arranged at the bottom of the control frame 705, and a pipeline connection is arranged between the puncture needle 706 and another one-way valve B708 at the top of the blood extraction piston 707; a spring is arranged between the telescopic end of the blood extraction piston 707 and the lower part inside the control frame 705.

[0027] Among them, a drain pipe 8 is fixedly arranged at the top of the dispenser seat 4, and the bottom of the drain pipe 8 is aligned above a sliding cylinder structure of the bottle changing rack 5.

[0028] Among them, the middle of the top of the sample bottle 9 is an opening structure, and a rubber membrane is fixedly arranged in the middle of the opening structure.

[0029] As Figures 1 - 5 shown, when sampling is required, pass the hind legs of the experimental animal through the two groups of positioning leg rings 1, and then press the annular airbag 103 to input air through the one-way valve A204 into the annular airbag 103 to expand the annular airbag 103, so as to fix the positioning leg ring 1 outside the animal leg; Insert the blood collection needle 304 into the animal vein. The blood collection needle 304 can be fixed. The positioning hinge seat 202 can rotate and slide outside the connecting guide rod 201 to realize left and right swing and up and down adjustment, and can be fixed by the top screw 203; The orientator 3 can swing up and down and is locked and fixed by the threaded cap 305 to realize angle adjustment so as to collect blood at a specified position; The blood collection needle 304 can be self-locked and fixed by the self-locking block 303 to lock the blood collection depth.

[0030] Embodiment 2: Based on Embodiment 1, a sample bottle 9 is put into the drainage tube 8, and the lowermost sample bottle 9 falls into the outer sliding cylinder structure of the bottle changing rack 5; the height of the drainage tube 8 can be adjusted and increased as needed so as to put multiple groups of sample bottles 9 for sampling. Serial number labels are pasted on the outside of the sample bottle 9, and the sample bottles 9 can be marked by being put in order. Blood collection is carried out once every half an hour through a timing switch. During operation, the program starts to drive the electric cylinder 6 to drive the driving rack 601 to move. The driving rack 601 contacts the hydraulic piston A 701 and squeezes and contracts the hydraulic piston A 701. The hydraulic oil in the hydraulic piston A 701 is input into the hydraulic piston B 702. The hydraulic piston B 702 extends to drive the connecting piece 703 to descend, penetrates the rubber film at the top of the sample bottle 9 with the puncture needle 706 and pierces into the sample bottle 9. When the control frame 705 contacts the sample bottle 9, it cannot move. The connecting piece 703 continues to descend, extends the blood extraction piston 707 to generate negative pressure, and draws blood from the blood collection needle 304. The blood passes through the one-way valve B 708 and enters the blood extraction piston 707 for replenishment. Then, the electric cylinder 6 is reset, and the hydraulic piston A 701 automatically resets through the spring, so that the hydraulic piston B 702 resets. During this period, the connecting piece 703 rises preferentially through the lower spring, contracts the blood extraction piston 707, inputs the blood in the blood extraction piston 707 to the puncture needle 706, injects it into the sample bottle 9, and the connecting piece 703 continues to rise to draw out the puncture needle 706 from the sample bottle 9.

[0031] Embodiment 3: Based on Embodiment 2, as Figures 7 - 8 shown, when the driving rack 601 resets, it drives the internal ratchet gear 403 to rotate 60 degrees. The control shaft 402 drives the hexagonal block 404 to rotate 60 degrees synchronously. The hexagonal block 404 cooperates with the positioning push block 406 to be self-locked and maintains stability when the driving rack 601 disengages from the internal ratchet gear 403, so that the bottle changing rack 5 pushes the sample bottle 9 to feed one station. At this time, the sample bottle 9 injected with blood moves above the slideway 407 and falls through the round hole into the slideway 407 for discharging.

[0032] The specific usage mode and function of this embodiment: In the present invention, during use, the hind legs of the experimental animal are passed through two groups of positioning leg rings 1, and then the annular airbag 103 is pressed, and air is input into the annular airbag 103 through the one-way valve A 204 to expand the annular airbag 103, so that the positioning leg ring 1 is fixed outside the animal leg. Insert the blood collection needle 304 into the animal vein. The blood collection needle 304 can be fixed. The positioning hinge seat 202 can rotate and slide outside the connecting guide rod 201 to achieve left - right swing and up - down adjustment, and can be fixed by the setscrew 203; The orientator 3 can swing up and down and is locked and fixed by the threaded cap 305 to achieve angle adjustment for blood collection at a specified position; The blood collection needle 304 can be self - locked and fixed by the self - locking block 303 to lock the blood collection depth; Put the sample bottle 9 into the drainage tube 8, and the lowermost sample bottle 9 falls into the outer sliding cylinder structure of the bottle changing rack 5; Through the timing switch, blood collection is carried out every half an hour. Start the driving electric cylinder 6 to drive the driving rack 601 to move. The driving rack 601 contacts the hydraulic piston A701 and squeezes and contracts the hydraulic piston A701. The hydraulic oil in the hydraulic piston A701 is input into the hydraulic piston B702. The hydraulic piston B702 extends to drive the connecting piece 703 to descend, penetrates the rubber film at the top of the sample bottle 9 with the puncture needle 706 and stabs into the sample bottle 9. When the control frame 705 contacts the sample bottle 9, it cannot move, and the connecting piece 703 continues to descend, extends the blood extraction piston 707 to generate negative pressure, and draws blood from the blood collection needle 304; The blood passes through the one - way valve B708 and enters the blood extraction piston 707 for replenishment; Then reset the driving electric cylinder 6. The hydraulic piston A701 automatically resets through the spring, so that the hydraulic piston B702 resets. During this period, the connecting piece 703 rises first through the lower spring, contracts the blood extraction piston 707, inputs the blood in the blood extraction piston 707 to the puncture needle 706 and injects it into the sample bottle 9. The connecting piece 703 continues to rise and pulls out the puncture needle 706 from the sample bottle 9; When the driving rack 601 resets, it drives the internal ratchet gear 403 to rotate 60 degrees. The control shaft 402 drives the hexagonal block 404 to rotate 60 degrees synchronously. The hexagonal block 404 cooperates with the positioning push block 406 to self - lock and maintain stability when the driving rack 601 disengages from the internal ratchet gear 403, so that the bottle changing rack 5 pushes the sample bottle 9 to feed one station. The sample bottle 9 filled with blood moves to the slideway 407 and falls through the round hole into the slideway 407 and is discharged; Automatically collecting blood can be achieved by timing and repeating the above steps in a loop.

Claims

1. An animal blood extraction device, characterized in that: include: A positioning leg ring (1), wherein an annular air bag (103) for positioning is fixedly provided inside the positioning leg ring (1); the number of the positioning leg rings (1) is two groups, and the two groups of positioning leg rings (1) are fixedly provided with a connecting frame (2) outside, and the connecting frame (2) is provided with a connecting guide rod (201) outside the fixing frame, and a positioning hinge seat (202) that can be fixed by a top screw (203) is slidably provided outside the connecting guide rod (201); an orienter (3), wherein a swing seat (301) is fixedly provided on one side of the orienter (3), and a connecting screw (302) is fixedly provided outside the swing seat (301), and the connecting screw (302) is fixed to the outside of the positioning hinge seat (202) by a threaded cap (305); a blood collection needle (304) is slidably provided in the orienter (3); A distributor seat (4), wherein a filling seat (401) is fixedly arranged on the top of the distributor seat (4) in cooperation with a bracket, a control shaft (402) is rotatably arranged between the distributor seat (4) and the filling seat (401), a bottle changing rack (5) is fixedly arranged on the top of the control shaft (402), and the outer end of the bottle changing rack (5) is a slide cylinder structure of six groups connected at equal distances, and a sample bottle (9) is arranged in the slide cylinder structure; a mounting frame (7) is fixedly arranged on the side of the top of the distributor seat (4), a vertical guide rod (704) is fixedly arranged on one side of the top of the mounting frame (7), a control frame (705) is slidably arranged outside the vertical guide rod (704), the control frame (705) is a U-shaped structure, a blood drawing piston (707) is fixedly arranged on the top of the control frame (705), and two groups of one-way valves B (708) are fixedly arranged on the top of the blood drawing piston (707), and a pipeline is arranged on the top of one group of one-way valves B (708) to be connected to the tail end of the blood collection needle (304).

2. An animal blood extraction device as claimed in claim 1, characterized in that: An air release valve (101) is fixedly arranged outside the positioning leg ring (1), a sliding valve core (102) is limitedly slidably arranged in the air release valve (101), handle structures are arranged on the sides of the sliding valve core (102) and the air release valve (101), and a spring is fixedly arranged between the handle structures on both sides.

3. An animal blood extraction device as claimed in claim 1, characterized in that: Two groups of one-way valves A (204) are fixedly arranged on one side of the connecting frame (2), the one-way valves A (204) are respectively connected to the two groups of annular air bags (103), and an air bag (205) is externally connected to the two groups of one-way valves A (204), and a check valve is built into the air inlet opened at the rear end of the air bag (205).

4. The animal blood extraction device according to claim 1, characterized in that: The orienter (3) is internally slidably provided with two groups of self-locking blocks (303), and the two groups of self-locking blocks (303) are joined together by a spring; the exterior of the blood collection needle (304) is a corrugated structure, and the self-locking blocks (303) match the corrugated structure on the exterior of the blood collection needle (304).

5. The animal blood extraction device according to claim 1, characterized in that: An inner ratchet gear (403) and a hexagonal block (404) are fixedly provided on the outside of the control shaft (402); two sets of spring rods (405) are installed in a bracket between the distributor seat (4) and the loading seat (401); a positioning push block (406) is fixedly provided at one end of the spring rod (405), and the positioning push block (406) is fitted on the outside of the hexagonal block (404); a slideway (407) is fixedly provided at the bottom of the loading seat (401), and a circular hole is opened at a position where the loading seat (401) is aligned with the slideway (407).

6. An animal blood extraction device as claimed in claim 5, characterized in that: A driving electric cylinder (6) is fixedly arranged on the top of the distributor seat (4), and a driving rack (601) is connected to the telescopic end of the driving electric cylinder (6); the driving rack (601) is kneaded with the inner ratchet gear (403); when the driving electric cylinder (6) is extended, the driving rack (601) drives the inner ratchet gear (403) to rotate idly; when the driving electric cylinder (6) is retracted, the driving rack (601) drives the inner ratchet gear (403) to rotate 60 degrees.

7. The animal blood extraction device according to claim 1, characterized in that: A hydraulic piston A (701) is fixedly arranged at the lower side of one side of the mounting frame (7), and a spring is arranged on the outer sleeve of the telescopic end of the hydraulic piston A (701); the hydraulic piston A (701) is axially aligned with the driving electric cylinder (6); a hydraulic piston B (702) is fixedly arranged at the upper side of one side of the mounting frame (7), and a pipeline is arranged to communicate with the hydraulic piston A (701) and the hydraulic piston B (702); a connecting piece (703) is fixedly arranged at the telescopic end of the hydraulic piston B (702), and the connecting piece (703) slides outside the telescopic end of the blood drawing piston (707); a puncture needle (706) is fixedly arranged at the bottom of the control frame (705), and a pipeline is arranged between the puncture needle (706) and another set of one-way valves B (708) at the top of the blood drawing piston (707); and a spring is arranged between the telescopic end of the blood drawing piston (707) and the lower part of the inner part of the control frame (705).

8. The animal blood extraction device according to claim 1, characterized in that: A drainage conduit (8) is fixedly provided on the top of the distributor seat (4), and the bottom of the drainage conduit (8) is aligned above a slide tube structure of the bottle changing rack (5).

9. The animal blood extraction device according to claim 1, characterized in that: The middle of the top of the sample bottle (9) is an opening structure, and a rubber membrane is fixedly arranged in the middle of the opening structure.

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