Livestock embryo flushing device

Abstract

The invention provides an embryo punching device which comprises an embryo punching pipe and an embryo punching gun connected with the embryo punching pipe, the embryo punching gun comprises a hollow gun barrel, one end of the hollow gun barrel is provided with a gun head communicated with the embryo punching pipe, a plunger capable of reciprocating is arranged in the hollow gun barrel, a first valve is arranged at the gun head, and a second valve is arranged at the gun head. The pipe wall of the hollow gun pipe is provided with an embryo flushing liquid inlet and a recovery liquid outlet, a second valve is arranged at the embryo flushing liquid inlet, a third valve is arranged at the recovery liquid outlet, the hollow gun pipe is provided with an air vent, a fourth valve is arranged at the air vent, and the plunger is connected with a driving device used for driving the plunger to move back and forth. A pressure detection unit is arranged at the gun head of the hollow gun barrel, a liquid level detection unit is arranged above the hollow gun barrel or at the air vent, and the blank flushing gun further comprises a controller used for controlling the driving device to operate and controlling the valve to be opened and closed. The blank punching device provided by the invention can realize automatic inflation and automatic repeated blank punching.

Description

[0001] This case is a divisional application of the following parent case: application number 2024104122919, application date April 8, 2024, invention name “A blank punching device”. Technical Field

[0002] The invention relates to the field of reproduction, and in particular to a device for collecting animal embryos. Background Art

[0003] Embryo transplantation plays an important role in animal reproduction in many aspects. Through embryo transplantation, the reproductive potential of excellent female livestock can be fully utilized, so that excellent donors can be exempted from a long pregnancy period and the breeding cycle can be shortened, thereby producing more excellent offspring individuals. This helps to increase the number of excellent populations and rapidly expand the population size. Using embryo freezing technology, embryos of specific breeds of livestock and wild animals can be preserved for a long time to establish a gene bank for excellent germplasm resources. This is especially important when preventing excellent breeds in a certain area from becoming extinct due to various factors. Embryo transplantation plays a vital role in animal reproduction. It not only helps to accelerate breed improvement and improve production efficiency, but also effectively preserves breed resources, reduces the risk of disease transmission, and provides strong support for scientific research on animal reproduction.

[0004] Embryo collection is an important step in obtaining bovine embryos. Bovine embryo collection methods mainly include surgical method, non-surgical method and embryo flushing method, among which embryo flushing method is the trend of embryo collection in the future. The embryo flushing method is to extend the embryo flushing tube into the uterine horn, inject air into the air bag to block the uterine horn opening, and then inject embryo flushing liquid into the uterine horn through the embryo flushing tube, and then extract the embryo flushing liquid, and repeat this several times to achieve the purpose of flushing out the embryo in the uterine horn. Since each step requires manual operation, the process is complicated, the embryo flushing time is long, and the work efficiency is not high. Summary of the invention

[0005] The purpose of the present invention is to provide an embryo flushing device which is convenient for embryo collection.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A blank punching device comprises a blank punching tube and a blank punching gun connected to the blank punching tube, the blank punching gun comprises a hollow gun barrel, one end of the hollow gun barrel is connected to a gun head connected to the blank punching tube, a plunger capable of reciprocating movement is arranged in the hollow gun barrel, a first valve is arranged at the gun head, a tube wall of the hollow gun barrel has a blank punching liquid inlet and a recovery liquid outlet, a second valve is arranged at the blank punching liquid inlet, a third valve is arranged at the recovery liquid outlet, the hollow gun barrel has an air vent, a fourth valve is arranged at the air vent, the plunger is connected to a driving device for driving the plunger to reciprocate, the blank punching gun also comprises a controller, the controller is connected to the driving device, the first valve, the second valve, the third valve and the fourth valve, and is used to control the operation of the driving device and the opening and closing of the valves; a pressure detection unit is arranged at the gun head of the hollow gun barrel, and the pressure detection unit is connected to the controller; a liquid level detection unit is arranged above the hollow gun barrel or at the air vent, and the liquid level detection unit is connected to the controller.

[0008] Furthermore, the embryo flushing tube includes a tube body and a tube head connected to the tube body, and a blocking airbag located between the tube body and the tube head for sealing the outlet end of the uterine horn. The airbag is fixed around the tube body near the tube head, and an inflation port is provided at the rear end of the embryo flushing tube. A ventilation channel connected to the airbag is provided in the tube body.

[0009] Furthermore, the hollow gun barrel has a second gun head at one end of the gun head, the second gun head is connected to the inflation port of the embryo tube air bag, a fifth valve is provided at the second gun head, an air pressure detection unit is provided in the second gun head, and the fifth valve and the air pressure detection unit are connected to the controller.

[0010] Furthermore, at least one side of the hollow barrel is transparent and has a capacity scale. One side of the hollow barrel is made of transparent material, which can facilitate observation of the state of the plunger, the amount of embryo flushing liquid and the operation status.

[0011] Furthermore, a displacement sensor or distance sensor for detecting the distance moved by the plunger is provided on one side of the plunger connected to the driving device, or the driving device has a detection unit for detecting displacement. The displacement sensor or distance sensor is connected to the controller. By detecting the position or displacement of the plunger, the amount of embryo flushing liquid sucked in or pushed out can be further calculated according to the inner diameter or inner cross-section of the hollow gun barrel.

[0012] Furthermore, the embryo flushing device also includes an embryo flushing liquid container connected to the embryo flushing liquid inlet through a hose and a recovery liquid container connected to the recovery liquid outlet.

[0013] Furthermore, the gun body of the embryo punching gun is also provided with a display screen, which is arranged at an end facing the operator, such as the upper end of the tail of the embryo punching gun, for convenient viewing and operation.

[0014] Furthermore, the blank punching gun also has a gun handle connected to the hollow gun barrel, a power supply unit is provided in the gun handle or at the bottom of the gun handle, and an operating trigger connected to the controller is provided on the gun handle. The power supply unit can be a battery. The power supply unit is connected to the controller and the drive device to provide power for the entire system.

[0015] Furthermore, the controller has a built-in control program, including automatic and manual programs. When it is an automatic program, the operator presses the trigger controller to control the blank punching gun to perform the following process:

[0016] s1. Inflation of the airbag: open the fourth valve, the plunger moves to the rear end of the hollow barrel, after the plunger moves to the predetermined position of the hollow barrel, close the first valve, the second valve, the third valve and the fourth valve, open the fifth valve, the plunger moves to the front end of the hollow barrel, the air pressure detection unit transmits the air pressure information to the controller in real time, when the air pressure reaches the predetermined value, the plunger stops moving, closes the fifth valve, when the plunger moves to the front end of the hollow barrel but the air pressure does not reach the predetermined value, closes the fifth valve, opens the fourth valve, the plunger moves to the rear end of the hollow barrel, after the plunger moves to the predetermined position of the hollow barrel, closes the fourth valve, opens the fifth valve, the plunger moves to the front end of the hollow barrel, when the air pressure reaches the predetermined value, the plunger stops moving, closes the fifth valve, when the plunger moves to the front end of the hollow barrel but the air pressure does not reach the predetermined value, repeats the process;

[0017] s2. Self-check and reset: The controller checks whether the plunger is located at the front end of the hollow barrel. If it is not located at the front end of the hollow barrel, it enters the reset state, closes the first, second and third valves, opens the fourth valve, drives the plunger to move to the front end of the hollow barrel until it reaches the front end, and closes the fourth valve;

[0018] s3, sucking in embryo flushing liquid: opening the second valve, driving the plunger to move to the rear end of the hollow barrel to a predetermined position, the embryo flushing liquid is sucked into the hollow barrel through the embryo flushing liquid inlet, and the plunger stops moving. When the liquid level detection unit does not detect that the embryo flushing liquid level in the hollow barrel reaches the predetermined position, the second valve is closed, the fourth valve is opened, and the plunger moves to the front end of the hollow barrel until the embryo flushing liquid level reaches the predetermined position, the fourth valve is closed, the second valve is opened, and the plunger is driven to move to the rear end of the hollow barrel to the predetermined position, the embryo flushing liquid is sucked into the hollow barrel through the embryo flushing liquid inlet, and the plunger stops moving;

[0019] s4. Injecting embryo flushing solution: close the second valve, open the first valve, drive the plunger to move toward the front end of the hollow barrel, and inject embryo flushing solution into the uterine horn until the amount of embryo flushing solution injected reaches a predetermined amount or reaches a predetermined pressure;

[0020] s5. Draw back the embryo flushing liquid: close the second valve, open the third valve, drive the plunger to move toward the rear end of the hollow barrel until the amount of liquid drawn back reaches a predetermined value, and the recovered liquid is recovered through the recovery liquid outlet;

[0021] s6, reset: close the first and third valves, open the fourth valve, drive the plunger to move to the front end of the hollow barrel until it reaches the front end, and close the fourth valve;

[0022] s7, cyclic embryo flushing: repeat steps s3, s4, s5 and s6 until a predetermined embryo flushing number is reached or a predetermined total amount of recovered liquid is reached;

[0023] s8 airbag deflation: open the fourth valve and the fifth valve, and move the plunger to the rear end to the predetermined position, so that the vent and the airbag are connected, and the air in the airbag is discharged through the vent;

[0024] When it is a manual procedure, the operator selects one of the steps s1 to s8 and presses the trigger controller to control the blank punching gun to execute the corresponding step.

[0025] Furthermore, the controller has a built-in control program, which also includes executing a suction and shooting step after executing the step s4: closing the second valve, driving the plunger to move to the rear end of the hollow barrel to a predetermined distance, and then driving the plunger to move to the front end of the hollow barrel so that the plunger reaches the position where the step s4 stops, and repeating this a predetermined number of times.

[0026] In addition, the gun body of the embryo punching gun is also provided with a shoulder strap. When operating, the embryo punching gun is carried on the body, and the embryo punching tube can be inserted into the uterus independently to complete the embryo punching work.

[0027] The embryo flushing device of the present invention can be applied to livestock such as cattle and horses, and can also be used for injecting mammals such as elephants and rhinos.

[0028] The embryo punching device provided by the present invention can realize the automation of the embryo punching procedure. The embryo punching procedure can be automatically executed by presetting the amount of embryo punching liquid and the number of embryo punching times per time, thereby greatly liberating labor.

[0029] The present invention can monitor the working status in real time by adding sensors such as an air pressure detection unit, a pressure detection unit, and a liquid level detection unit. For example, when the airbag is damaged during operation, the air pressure detection unit detects that the pressure is lower than the minimum threshold, and it is judged that the airbag has leaked or the airbag is not blocked in the uterine horn. Then, the embryo flushing device issues an alarm, stops working in time, and replaces the embryo flushing tube to avoid wasting embryos. When the pressure detection unit detects that the hydraulic pressure of the embryo flushing liquid reaches a predetermined value, the embryo flushing liquid is stopped from being injected, so that the excessive injection of embryo flushing liquid can be avoided, causing the airbag to slip out of the uterine horn or the uterine horn to be damaged due to excessive injection of embryo flushing liquid. The liquid level detection unit detects the liquid level to avoid the problem of inhaled embryo flushing liquid not meeting the standard due to system leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an implementation mode of the blank punching device of the present invention;

[0031] Figure 2 . is a schematic structural diagram of an embodiment of the embryo punching device of the present invention;

[0032] Figure 3 .It is a schematic structural diagram of the embryo punching tube of the embryo punching device of the present invention.

[0033] Among them, 1. hollow gun barrel, 101. plunger, 102. vent, 103. fourth valve, 104. embryo flushing liquid inlet, 105. second valve, 106. recovery liquid outlet, 107. third valve, 108. distance sensor, 2. gun head, 201. pressure detection unit, 202. first valve, 3. drive device, 301. screw rod, 302. nut, 303. reduction motor, 304. gear, 4. gun handle, 401. operating trigger, 402. power supply unit, 5. display screen, 6. embryo flushing liquid container, 601. hose, 7. recovery liquid container, 8. embryo flushing tube, 801. tube body, 802. air bag, 803. opening, 804. tube head, 805. inflation port, 9. second gun head, 901. fifth valve, 902. air pressure detection unit. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] Detailed exemplary embodiments are disclosed below. However, the specific structural and functional details disclosed herein are only for the purpose of describing exemplary embodiments.

[0036] It should be understood that the present invention is not limited to the specific exemplary embodiments disclosed, but covers all modifications, equivalents and alternatives falling within the scope of the present invention. In the description of all the drawings, the same reference numerals represent the same elements.

[0037] With reference to the drawings, the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any structural modification, change in proportional relationship, or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the position limiting terms quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship, without substantially changing the technical contents, should also be regarded as the scope of the implementation of the present invention.

[0038] In the present invention, "a place" refers to a location where the purpose of the installation can be achieved. For example, the description of "a second valve is provided at the embryo flushing liquid inlet" means that the second valve can be installed in the embryo flushing liquid inlet, or the hollow gun barrel can be connected to the embryo flushing liquid inlet through the second valve, etc., and the purpose is to achieve the opening and closing of the embryo flushing liquid inlet. For another example, the liquid level sensor in the present invention can be installed in the vent, the inner wall of the vent, or the outer wall of the vent (the vent is made of transparent material and adopts a non-contact liquid level sensor).

[0039] Example 1 Blank punching device

[0040] like Figure 1 , 2 As shown, the embryo punching device of the present invention includes an embryo punching tube 8 and an embryo punching gun connected to the embryo punching tube 8, a hollow gun barrel 1, one end of the hollow gun barrel 1 is connected to a gun head 2 connected to the embryo punching tube 8, a plunger 101 that can reciprocate is provided in the hollow gun barrel 1, a first valve 202 is provided at the gun head 2, the tube wall of the hollow gun barrel 1 has an embryo punching liquid inlet 104 and a recovery liquid outlet 106, a second valve 105 is provided at the embryo punching liquid inlet 104, and a third valve 107 is provided at the recovery liquid outlet 106, the hollow gun barrel 1 has a vent 102, a fourth valve 103 is provided at the vent 102, the plunger 101 is connected to a driving device 3 for driving the plunger 101 to reciprocate, and the embryo punching gun also includes a controller, which is connected to the driving device 3, the first valve 202, the second valve 105, the third valve 107 and the fourth valve 103, and is used to control the operation of the driving device 3 and the opening and closing of the valves. The hollow gun barrel 1 has a second gun head 9 at one end of the gun head. The second gun head 9 is connected to the inflation port 805 of the embryo tube air bag. A fifth valve 901 is provided at the second gun head 9. An air pressure detection unit 902 is provided inside the second gun head.

[0041] The valve uses an electronically controlled valve, so that the valve opening and closing can be controlled by a controller, such as an electromagnetic valve. By controlling the opening and closing of the valve through a program, the opening and closing state of each valve can be quickly adjusted.

[0042] A pressure detection unit 201 is provided at the gun head 2 of the hollow gun barrel 1, and the pressure detection unit 201 is connected to the controller. The pressure detection unit 201 is used to detect the pressure of the embryo flushing liquid. According to the change of the embryo flushing liquid pressure, it can be evaluated whether the injection amount of the embryo flushing liquid is appropriate.

[0043] A liquid level detection unit is provided above the hollow barrel 1 or at the vent 102, and the liquid level detection unit is connected to the controller. The liquid level detection unit can detect whether the liquid level of the hollow barrel 1 reaches a corresponding liquid level.

[0044] The embryo flushing tube 8 comprises a tube body 801 and a tube head 804 connected to the tube body 801, and a blocking airbag 802 located between the tube body 801 and the tube head 804 for blocking the outlet end of the uterine horn. The airbag 802 surrounds and is fixed to the tube body 801 near the tube head 804. The rear end of the embryo flushing tube 8 is provided with an air filling port 805, and the tube body 801 is provided with an air passage connected to the airbag 802. The tube head 804 is provided with a plurality of openings 803 for the entry and exit of embryo flushing liquid.

[0045] One side of the hollow barrel 1 in this example is transparent and has a capacity scale. One side of the hollow barrel 1 is made of transparent material, which can facilitate observation of the state of the plunger 101, the amount of the embryo flushing liquid and the operation.

[0046] In this example, a side where the plunger 101 is connected to the drive device 3 is provided with a distance sensor 108 (located at the rear end of the hollow barrel 1). Since the length of the hollow barrel 1 is fixed, the position of the plunger 101 can be known by dynamically detecting the distance between the plunger 101 and the rear end of the hollow barrel 1, and then the amount of the embryo flushing liquid sucked in or pushed out can be calculated according to the inner diameter or inner cross section of the hollow barrel 1. The distance sensor 108 here can also be replaced by a displacement sensor, or the drive device 3 has a detection unit for detecting displacement. The displacement sensor or the distance sensor is connected to the controller.

[0047] The driving device 3 may be a hydraulic cylinder, a pneumatic cylinder or a reduction motor, etc. In this example, the driving device 3 includes a reduction motor 303 and a screw mechanism driven by the reduction motor 303, including a gear 304 on the shaft of the reduction motor 303, and the screw mechanism includes a screw 301 and a nut 302 sleeved on the screw 301, and the nut 302 has teeth meshing with the gear 304. The reduction motor 303 drives the nut 302 to rotate forward or reverse by forward or reverse rotation, thereby pushing the screw 301 and driving the plunger 101 to move forward and backward.

[0048] The gun body of the embryo punching gun also has a display screen 5, which is arranged at the end facing the operator, and in this example, is arranged at the upper end of the tail of the embryo punching gun, so as to facilitate viewing and operation. The display screen can also be a touch screen, and the touch screen can also input or set related operations.

[0049] The blank punching gun also has a gun handle 4 connected to the hollow gun barrel 1, a power supply unit 402 is provided in the gun handle 4 or at the bottom of the gun handle 4, and an operating trigger 401 connected to the controller is provided on the gun handle 4. The power supply unit 402 can be a battery. The power supply unit 402 is connected to the controller, the drive device 3, the display screen 5, etc., to provide power for the entire system.

[0050] like Figure 3As shown, the device of the present invention further comprises an embryo flushing liquid container 6 connected to the embryo flushing liquid inlet 104 via a hose 601 and a recovery liquid container 7 connected to the recovery liquid outlet 106 .

[0051] The embryo flushing liquid container 6 has a heat preservation device for controlling the temperature of the embryo flushing liquid at 37-38°C to avoid stress on the cattle. (A winter experiment is used to compare the number of samples collected at this temperature and at a lower temperature, such as 4°C)

[0052] The recovery liquid outlet 106 can be connected to the recovery liquid container 7 by a clamping connection or a screw connection. A sealing gasket is provided at the recovery liquid outlet 106 so that the recovery liquid container 7 is sealedly connected to the hollow gun body 1 .

[0053] The embryo punching gun body is also provided with operation keys, including a reset key, a selection key, an adjustment knob, etc. The selection key includes a first selection key, which may include three gears: automatic, manual, and off, and a second selection key, which may include three selection gears: liquid inlet, liquid outlet, and whipping mode, and an embryo punching liquid amount adjustment knob for adjusting the amount of embryo punching liquid in a single time, and other buttons.

[0054] In the present invention, the amount of embryo flushing solution injected can be freely set. And a certain pressure threshold can be set. According to the pressure feedback from the pressure sensor, when the threshold is reached, the embryo flushing solution injection is stopped. In this way, the amount of embryo flushing solution injected into the uterine horn can be automatically controlled according to individual conditions to avoid insufficient or excessive injection. When the injection amount is insufficient, the uterine horn cannot be effectively flushed, especially the corner of the uterine horn cannot be effectively flushed. If the injection amount is too large, the uterine horn may be damaged or the embryo flushing solution may leak.

[0055] In addition, the gun body of the embryo punching gun is also provided with a shoulder strap. When operating, the embryo punching gun is carried on the body, and the embryo punching tube can be inserted into the uterus independently to complete the embryo punching work.

[0056] In this example, the controller has built-in control programs, including automatic and manual programs. When it is an automatic program, the operator presses the operating trigger 401 and the controller controls the blank punching gun to perform the following process:

[0057] s1. Inflation of the airbag: open the fourth valve 103, the plunger 101 moves to the rear end of the hollow barrel 1 (the end away from the gun head 2), and after the plunger 101 moves to the predetermined position of the hollow barrel 1, close the first valve 202, the second valve 105, the third valve 107 and the fourth valve 103, open the fifth valve 901, and the plunger 101 moves to the front end of the hollow barrel 1 (the end close to the gun head 2), and the air pressure detection unit 902 transmits the air pressure information to the controller in real time. When the air pressure reaches the predetermined value, the plunger 101 stops moving and closes the fifth valve 90 1. When the plunger 101 moves to the front end of the hollow barrel 1 but the air pressure does not reach the predetermined value, the fifth valve 901 is closed, the fourth valve 103 is opened, and the plunger 101 moves to the rear end of the hollow barrel 1. After the plunger 101 moves to the predetermined position of the hollow barrel 1, the fourth valve 103 is closed, the fifth valve 901 is opened, and the plunger 101 moves to the front end of the hollow barrel 1. When the air pressure reaches the predetermined value, the plunger 101 stops moving and the fifth valve 901 is closed. When the plunger 101 moves to the front end of the hollow barrel 1 but the air pressure does not reach the predetermined value, the process is repeated;

[0058] s2. Self-check and reset: The controller checks whether the plunger 101 is located at the front end of the hollow barrel 1. If it is not located at the front end of the hollow barrel 1, it enters the reset state, closes the first valve 202, the second valve 105, and the third valve 107, opens the fourth valve 103, drives the plunger 101 to move to the front end of the hollow barrel 1 until it reaches the front end, and closes the fourth valve 103;

[0059] s3, sucking embryo flushing liquid: open the second valve 105, drive the plunger 101 to move to the predetermined position at the rear end of the hollow barrel 1, the embryo flushing liquid is sucked into the hollow barrel 1 through the embryo flushing liquid inlet 104, stop the plunger 101 from moving, when the liquid level detection unit does not detect that the embryo flushing liquid level in the hollow barrel 1 reaches the predetermined position, close the second valve 105, open the fourth valve 103, and move the plunger 101 to the front end of the hollow barrel 1 until the embryo flushing liquid level reaches the predetermined position, close the fourth valve 103, open the second valve 105, drive the plunger 101 to move to the predetermined position at the rear end of the hollow barrel 1, the embryo flushing liquid is sucked into the hollow barrel 1 through the embryo flushing liquid inlet 104, and stop the plunger 101 from moving;

[0060] s4, injecting embryo flushing liquid: close the second valve 105, open the first valve 202, drive the plunger 101 to move toward the front end of the hollow barrel 1, and inject embryo flushing liquid into the uterine horn until the amount of embryo flushing liquid injected reaches a predetermined amount or reaches a predetermined pressure;

[0061] s5, withdrawing the embryo flushing liquid: close the second valve 105, open the third valve 107, drive the plunger 101 to move toward the rear end of the hollow barrel 1, until the amount of liquid withdrawn reaches a predetermined value, and the recovered liquid is recovered through the recovery liquid outlet 106;

[0062] s6, reset: close the first valve 202 and the third valve 107, open the fourth valve 103, drive the plunger 101 to move to the front end of the hollow barrel 1 until it reaches the front end, and close the fourth valve 103;

[0063] s7, cyclic embryo flushing: repeat steps s3, s4, s5 and s6 until a predetermined embryo flushing times or a predetermined total amount of recovered liquid is reached.

[0064] In addition, it can further include step s8 of airbag deflation: opening the fourth valve 103 and the fifth valve 901, and moving the plunger 101 to a predetermined position at the rear end, so that the vent 102 and the airbag 802 are connected, and the air in the airbag 802 is discharged through the vent 102.

[0065] When it is a manual procedure, the operator selects one of the steps s1 to s8 and presses the trigger controller to control the blank punching gun to execute the corresponding step.

[0066] Furthermore, the controller has a built-in control program, which also includes executing a suction and shooting step after executing the step s4: closing the second valve 105, driving the plunger 101 to move to the rear end of the hollow barrel 1 to a predetermined distance, and then driving the plunger 101 to move to the front end of the hollow barrel 1 so that the plunger 101 reaches the position where the step s4 stops, and repeating this a predetermined number of times.

[0067] The operation mode of this device is:

[0068] After the cow to be flushed is selected and fixed, the flushing tube 8 is inserted into the uterus of the cow to be flushed, and the tube head 804 is inserted into the uterine horn, the power of the flushing gun is turned on, the corresponding program, mode and related settings are selected, and the operating trigger 401 is pulled. The flushing gun performs the flushing work according to the program until the operation is completed. This process is simple to operate and easy to control.

Claims

1. A livestock embryo flushing device, characterized in that: The invention comprises an embryo punching tube and an embryo punching gun connected to the embryo punching tube, wherein the embryo punching gun comprises a hollow gun barrel, one end of the hollow gun barrel is connected to a gun head connected to the embryo punching tube, a plunger capable of reciprocating movement is arranged in the hollow gun barrel, a first valve is arranged at the gun head, a tube wall of the hollow gun barrel has an embryo punching liquid inlet and a recovery liquid outlet, a second valve is arranged at the embryo punching liquid inlet, a third valve is arranged at the recovery liquid outlet, the hollow gun barrel has an air vent, a fourth valve is arranged at the air vent, the plunger is connected to a driving device for driving the plunger to reciprocate, the embryo punching gun also comprises a controller, the controller is connected to the driving device, the first valve, the second valve, the third valve and the fourth valve, and is used to control the operation of the driving device and the opening and closing of the valves; a pressure detection unit is arranged at the gun head of the hollow gun barrel, and the pressure detection unit is connected to the controller; a liquid level detection unit is arranged above the hollow gun barrel or at the air vent, and the liquid level detection unit is connected to the controller.

2. The blank punching device according to claim 1, characterized in that: The embryo flushing tube includes a tube body and a tube head connected to the tube body, and a blocking airbag located between the tube body and the tube head for blocking the outlet end of the uterine horn. The airbag is fixed around the tube body near the tube head. An inflation port is provided at the rear end of the embryo flushing tube, and a ventilation channel connected to the airbag is provided in the tube body.

3. The blank punching device according to claim 2, characterized in that: The hollow gun barrel has a gun head at one end and also has a second gun head, the second gun head is connected to the inflation port of the embryo tube air bag, the second gun head is provided with a fifth valve, the second gun head is provided with an air pressure detection unit, and the fifth valve and the air pressure detection unit are connected to the controller.

4. The blank punching device according to claim 1, characterized in that: At least one side of the hollow barrel is transparent and has capacity scales.

5. The blank punching device according to claim 1, characterized in that: A displacement sensor or a distance sensor for detecting the moving distance of the plunger is provided on the side where the plunger is connected to the driving device, or the driving device has a detection unit for detecting the displacement.

6. The blank punching device according to claim 1, characterized in that: The invention also comprises an embryo flushing liquid container connected to an embryo flushing liquid inlet through a hose and a recovery liquid container connected to a recovery liquid outlet.

7. The blank punching device according to claim 1, characterized in that: The body of the blank punching gun is also provided with a display screen.

8. The blank punching device according to any one of claims 1 to 7, characterized in that: The blank punching gun also has a gun handle connected to the hollow gun barrel, a power supply unit is arranged inside the gun handle or at the bottom of the gun handle, and an operating trigger connected to a controller is arranged on the gun handle.

9. The blank punching device according to claim 8, characterized in that: The controller has built-in control programs, including automatic and manual programs. When it is an automatic program, the operator presses the trigger controller to control the blank punching gun to perform the following process: s1. Inflation of the airbag: open the fourth valve, the plunger moves to the rear end of the hollow barrel, after the plunger moves to the predetermined position of the hollow barrel, close the first valve, the second valve, the third valve and the fourth valve, open the fifth valve, the plunger moves to the front end of the hollow barrel, the air pressure detection unit transmits the air pressure information to the controller in real time, when the air pressure reaches the predetermined value, the plunger stops moving, closes the fifth valve, when the plunger moves to the front end of the hollow barrel but the air pressure does not reach the predetermined value, closes the fifth valve, opens the fourth valve, the plunger moves to the rear end of the hollow barrel, after the plunger moves to the predetermined position of the hollow barrel, closes the fourth valve, opens the fifth valve, the plunger moves to the front end of the hollow barrel, when the air pressure reaches the predetermined value, the plunger stops moving, closes the fifth valve, when the plunger moves to the front end of the hollow barrel but the air pressure does not reach the predetermined value, repeats the process; s2. Self-check and reset: The controller checks whether the plunger is located at the front end of the hollow barrel. If it is not located at the front end of the hollow barrel, it enters the reset state, closes the first, second and third valves, opens the fourth valve, drives the plunger to move to the front end of the hollow barrel until it reaches the front end, and closes the fourth valve; s3, sucking in embryo flushing liquid: opening the second valve, driving the plunger to move to the rear end of the hollow barrel to a predetermined position, the embryo flushing liquid is sucked into the hollow barrel through the embryo flushing liquid inlet, and the plunger stops moving. When the liquid level detection unit does not detect that the embryo flushing liquid level in the hollow barrel reaches the predetermined position, the second valve is closed, the fourth valve is opened, and the plunger moves to the front end of the hollow barrel until the embryo flushing liquid level reaches the predetermined position, the fourth valve is closed, the second valve is opened, and the plunger is driven to move to the rear end of the hollow barrel to the predetermined position, the embryo flushing liquid is sucked into the hollow barrel through the embryo flushing liquid inlet, and the plunger stops moving; s4. Injecting embryo flushing solution: close the second valve, open the first valve, drive the plunger to move toward the front end of the hollow barrel, and inject embryo flushing solution into the uterine horn until the amount of embryo flushing solution injected reaches a predetermined amount or reaches a predetermined pressure; s5. Draw back the embryo flushing liquid: close the second valve, open the third valve, drive the plunger to move toward the rear end of the hollow barrel until the amount of liquid drawn back reaches a predetermined value, and the recovered liquid is recovered through the recovery liquid outlet; s6, reset: close the first and third valves, open the fourth valve, drive the plunger to move to the front end of the hollow barrel until it reaches the front end, and close the fourth valve; s7, cyclic embryo flushing: repeat steps s3, s4, s5 and s6 until a predetermined embryo flushing number is reached or a predetermined total amount of recovered liquid is reached; s8 airbag deflation: open the fourth valve and the fifth valve, and move the plunger to the rear end to the predetermined position, so that the vent and the airbag are connected, and the air in the airbag is discharged through the vent; When it is a manual procedure, the operator selects one of the steps s1 to s8 and presses the trigger controller to control the blank punching gun to execute the corresponding step.

10. The blank punching gun according to claim 9, characterized in that: The controller has a built-in control program, which also includes executing a suction and shooting step after executing the step s4: closing the second valve, driving the plunger to move to the rear end of the hollow barrel to a predetermined distance, and then driving the plunger to move to the front end of the hollow barrel so that the plunger reaches the position where the step s4 stops, and repeating this a predetermined number of times.

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