Embryo-flushing tube for preventing uterus damage in cattle

Abstract

The present invention provides an embryo flushing tube for preventing the uterus of a cow from being damaged, comprising a main tube, a steel core, an air bag, an air inlet pipe, an automatic reset switch, a battery and an alarm. The main tube comprises a main tube and an air flushing pipe, one end of the main tube is a closed end, the other end is connected to the air flushing pipe, and a plurality of embryo recovery holes are provided on the peripheral wall of the main tube near the closed end; the steel core extends into the main tube; the air bag is installed on the main tube; one end of the air inlet pipe is located in the main tube and is connected to the air bag, and the other end extends into the air flushing pipe; the automatic reset switch is installed at the closed end of the main tube, the battery and the alarm are installed at one end of the main tube away from the closed end and / or on the air flushing pipe, and the battery, the alarm and the automatic reset switch are connected in series. The embryo flushing tube can judge whether the steel core is still in the position between the closed end and the embryo recovery hole through the working state of the alarm when flushing embryos, so as to adjust the position of the steel core in time and prevent the steel core from passing through the embryo recovery hole and causing damage to the inner wall of the uterus.

Description

Technical Field

[0001] The invention relates to a veterinary surgical instrument, in particular to an embryo-washing tube for preventing a cow's uterus from being damaged. Background Art

[0002] Embryo flushing is to send a special embryo flushing tube to the front end of the uterine horn according to a certain method, and use a special solution to flush the early embryo out of the cow's uterus. Embryo flushing is generally performed 6-7 days after insemination, using a two-way catheter embryo flushing tube. The two-way catheter embryo flushing tube is composed of a catheter with an air bag and a single-way tube. One way in the catheter is used to inflate the air bag, and the other way is used to inject and recover the embryo flushing solution. When in use, through the rectum, the embryo flushing tube with a steel core is gently inserted into the greater curvature of the uterine horn on one side through the cervix, and then the embryo flushing tube is sent to the base of the lesser curvature in front of the greater curvature of the uterine horn, and the air bag is inflated. The inflation volume is determined according to the age of the cow, the size of the uterus, and the depth of the embryo collection tube (usually 8ml-10ml). Fix the embryo flushing tube, pull out the steel core, start to perfuse the collection solution, and flush the embryo, so that the embryo enters the catheter from the embryo recovery hole at the end of the catheter for collection. After flushing one side of the uterus, the steel core is inserted into the catheter again and deflated, the steel core is carefully fixed, the catheter is withdrawn to the uterine body, turned and inserted into the other uterine horn, and the above steps are repeated to flush the embryos of the other side of the uterus. In order to facilitate embryo recovery, the aperture of the embryo recovery hole is usually larger. Due to the existence of the greater curvature of the uterine horn, the steel core is easy to pass through the embryo recovery hole during embryo collection, injuring the inner wall of the uterus, especially after flushing the embryos of one side of the uterus, when the embryo flushing tube is moved to the other side of the uterus, the steel core is very easy to pass through the embryo recovery hole, and it is more likely to injure the inner wall of the uterus. At present, the embryo flushing tube cannot solve the problem of the steel core passing through the embryo recovery hole. The steel core is fixed by the operator based on experience. Since the embryo recovery hole is located in the uterus and is not visible during embryo flushing, the operator is often unable to adjust the position of the steel core in time, so that it is flushed out of the embryo recovery hole. Therefore, embryo flushing has high requirements on the operator. Summary of the invention

[0003] In view of the above technical problems, the present invention provides an embryonic tube capable of preventing the bovine uterus from being damaged.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A embryo flushing tube for preventing damage to the uterus of a cow comprises a main tube, a steel core, an air bag, an air intake pipe, an automatic reset switch, a battery and an alarm. The main tube is a hollow hose, comprising a main tube and an air flushing pipe, one end of the main tube is a closed end, the air flushing pipe is connected to the peripheral wall of the other end of the main tube, the air flushing pipe is communicated with the main tube, and a plurality of embryo recovery holes are provided on the peripheral wall of the main tube near the closed end; one end of the steel core extends into the main tube and can move along the main tube under force; the air bag is installed on the outer peripheral wall of the main tube; one end of the air intake pipe is located in the main tube and is communicated with the air bag, and the other end of the air intake pipe extends into the air flushing pipe; the automatic reset switch is installed at the closed end of the main tube, the battery and the alarm are installed at one end of the main tube away from the closed end and / or on the air flushing pipe, and the battery, the alarm and the automatic reset switch are connected in series; the automatic reset switch turns on or off the power supply of the alarm when subjected to the pressure of the steel core.

[0006] Furthermore, the battery and the alarm are both installed at an end of the main pipe away from the closed end.

[0007] Furthermore, the battery and the alarm are both installed on the air charging pipe, and the battery, the alarm and the automatic reset switch are connected in series via wires, and the wires are located in the closed end, the main pipe and the wall of the air charging pipe.

[0008] Furthermore, the alarm is a light emitting diode or a buzzer.

[0009] Furthermore, a protrusion is provided on the outer wall of the airbag.

[0010] Furthermore, the main pipe and the air flushing pipe are both made of silicone.

[0011] Furthermore, the air inlet pipe is a thin tube built into the main duct, and the air inlet pipe is isolated from the inner cavity of the main duct.

[0012] Furthermore, the main pipe has a first opening and a second opening arranged opposite to each other, and the first opening and the second opening are both connected to the inner cavity of the main pipe; a sealing cover is installed at the first opening of the main pipe to seal the first opening, and the sealing cover constitutes the closed end, and the automatic reset switch is accommodated in the sealing cover.

[0013] Furthermore, the sealing cover includes a cover body and a pressure plate, an installation space with an opening at one end is formed in the cover body, the cover body is connected to the main pipe and the opening of the cover body faces the main pipe; the pressure plate is installed at the opening of the cover body and is used to close the opening of the cover body, and the pressure plate can be elastically deformed under force; the automatic reset switch is installed in the installation space.

[0014] The present invention also provides another embryo flushing tube for preventing damage to the cow's uterus, comprising a main conduit, a steel core, an air bag, an air intake pipe, an induction switch, a battery and an alarm. The main conduit is a hollow hose, comprising a main pipe and an air flushing pipe, one end of the main pipe is a closed end, the other end of the main pipe is connected to the surrounding wall of the main pipe, the air flushing pipe is connected to the main pipe, and a plurality of embryo recovery holes are formed on the surrounding wall of the main pipe near the closed end; one end of the steel core extends into the main pipe and can move along the main pipe under force, and a trigger component is installed at one end of the steel core located in the main pipe; the air bag is installed The induction switch is arranged on the outer peripheral wall of the main pipe; one end of the air inlet pipe is located in the main pipe and is connected to the air bag, and the other end of the air inlet pipe extends into the flushing pipe; the induction switch is installed at the closed end of the main pipe, and the induction range of the induction switch is smaller than the minimum distance between the embryo recovery hole and the closed end; the battery and the alarm are installed at one end of the main pipe away from the closed end and / or the flushing pipe, and the battery, the alarm and the induction switch are connected in series; the trigger component turns on or off the power supply of the alarm when it is within the induction range of the induction switch.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0016] The above-mentioned embryo punching tube has an automatic reset switch or an induction switch installed at the closed end of the main tube, and a battery and an alarm installed at the other end of the main tube. When the position of the steel core changes, the working state of the alarm can be changed. When punching embryos, the staff can judge whether the steel core is still in the position between the closed end and the embryo retrieval hole through the working state of the alarm, so as to adjust the position of the steel core in time to prevent the steel core from passing through the embryo retrieval hole and causing damage to the inner wall of the uterus. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the embryo tube in the first embodiment of the present invention.

[0018] Figure 2 for Figure 1 Schematic cross-sectional view of the embryo tube shown.

[0019] Figure 3 for Figure 2 An enlarged view of the structure of part of the embryo tube is shown.

[0020] Figure 4 This is a circuit diagram of the automatic reset switch, battery, and alarm in the first embodiment of the present invention.

[0021] Figure 5 Schematic diagram of the structure of the embryo tube in the second embodiment of the present invention.

[0022] Main component symbols

[0023] 100. embryo punching tube; 2. main pipe; 21. main pipe; 212. first opening; 214. second opening; 216. embryo recovery hole; 217. air inlet; 23. air punching tube; 25. guide tube; 251. guide hole; 253. inclined plane; 26. sealing cover; 261. cover body; 262. pressure plate; 263. installation space; 3. steel core; 4. air bag; 41. protrusion; 5. air inlet pipe; 6. automatic reset switch; 7. battery; 8. alarm; 9. wire; 11. induction switch; 12. trigger component. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] Please also see Figures 1 to 3 The first embodiment of the present invention provides an embryo flushing tube 100 for preventing damage to the cow's uterus, including a main tube 2, a steel core 3, an air bag 4, an air inlet pipe 5, an automatic reset switch 6, a battery 7 and an alarm 8.

[0028] The main conduit 2 is a hollow hose, and the main conduit 2 includes a main conduit 21, an air flushing tube 23 and a guide tube 25, wherein one end of the main conduit 21 is a closed end. In this embodiment, the main conduit 21 has a first opening 212 and a second opening 214 arranged opposite to each other, and the first opening 212 and the second opening 214 are both connected to the inner cavity of the main conduit 21; a sealing cover 26 is installed at the first opening 212 of the main conduit 21 to seal the first opening 212, and the sealing cover 26 constitutes the closed end. When in use, one end of the main conduit 21 provided with the sealing cover 26 is used to insert into the cow's uterus, and the second opening 214 of the main conduit 21 is located outside the cow's body. Preferably, the sealing cover 26 is in the shape of a bullet head, so that the insertion of the main conduit 21 is smoother. A plurality of embryo recovery holes 216 are provided through the peripheral wall of the main conduit 21 near the closed end, and the plurality of embryo recovery holes 216 are all connected to the inner cavity of the main conduit 21. Preferably, the outer diameter of the main conduit 21 is about 5-6 mm, and the inner diameter is about 3-4 mm.

[0029] The air-injection pipe 23 is connected to the peripheral wall of the main pipe 21 at one end away from the closed end. Preferably, the air-injection pipe 23 is integrally formed with the main pipe 21. One end of the guide pipe 25 is detachably plugged into the second opening 214 of the main pipe 21 and is coaxially arranged with the main pipe 21. A guide hole 251 is provided in the guide pipe 25 along the axial direction of the main pipe 21, and the guide hole 251 is approximately located on the central axis of the guide pipe 25. An inclined slope 253 is formed on the outer wall of one end of the guide pipe 25 for plugging with the main pipe 21, so that the insertion process of the guide pipe 25 is smoother. The inclined surface 253 can also cooperate with the main pipe 21 to make its plugging more stable.

[0030] One end of the steel core 3 extends into the main pipe 21 through the second opening 214, and can be forced to move along the axial direction of the main pipe 21. In the present embodiment, one end of the steel core 3 extends into the main pipe 21 through the guide hole 251, and the steel core 3 can be guided by the guide hole 251. The airbag 4 is mounted on the peripheral wall of the main pipe 21. Specifically, the airbag 4 is wrapped around the outer peripheral wall of the main pipe 21 and is sealed and connected to the outer peripheral wall of the main pipe 21. The installation of the airbag 4 belongs to the prior art and will not be described here to omit space. In the present embodiment, the airbag 4 is located on the side of the several embryo recovery holes 216 that are away from the closed end. A protrusion 41 is also provided on the outer wall of the airbag 4 to play an anti-slip role.

[0031] The air intake pipe 5 is located in the main conduit 2, one end of the air intake pipe 5 is located in the main conduit 21 and communicates with the airbag 4, and the other end of the air intake pipe 5 extends into the flushing pipe 23. In this embodiment, the air intake pipe 5 is a thin tube built into the main conduit 2, isolated from the inner cavity of the main conduit 2, and one end of the air intake pipe 5 is communicated with the airbag 4, specifically: an air intake port 217 is provided through the outer peripheral wall of the main conduit 21, and the air intake port 217 communicates with the inner cavity of the main conduit 21 and the airbag 4; one end of the air intake pipe 5 is received in the inner cavity of the main conduit 21 and connected to the wall of the main conduit 21, and the air intake pipe 5 ventilates into the airbag 4 through the air intake port 217. The other end of the air intake pipe 5 extends into the flushing pipe 23, and is used to be connected to an external inflation valve (not shown).

[0032] The automatic reset switch 6 is installed at the closed end of the main pipe 21. In this embodiment, the automatic reset switch 6 is installed in the sealing cover 26. Specifically, the sealing cover 26 includes a cover body 261 and a pressure plate 262. The cover body 261 is in the shape of a bullet head. An installation space 263 with an open end is formed in the cover body 261. The inner diameter of the installation space 263 is about 4 mm. The cover body 261 is connected to the main pipe 21 and the opening of the cover body 261 faces the main pipe 21. The pressure plate 262 is installed at the opening of the cover body 261 to close the opening of the cover body 261. The pressure plate 262 is made of elastic materials such as silica gel, which can be elastically deformed under force. The automatic reset switch 6 is installed in the installation space 263. In this embodiment, the automatic reset switch 6 is connected to the cover body 261 and is an automatic reset button switch. The button of the automatic reset button switch faces the pressure plate 262. The automatic reset button switch can be closed when it senses the pressure of the steel core 3. The automatic reset button switch is an electrical appliance that is activated when pressed and reset when released, and is used to connect and disconnect a small current circuit. Its structure belongs to the prior art and will not be described here for the sake of space. In this embodiment, the automatic reset button switch can adopt the miniature button switch in the Chinese utility model CN210110605U, which can achieve a diameter of 2.5 mm and is suitable for installation in the closed end of the embryo punching tube 100. It can be understood that the structure of the automatic reset switch 6 is not limited to the automatic reset button switch, and it can also adopt a reset switch of other structures, as long as its size can be installed in the closed end of the embryo punching tube 100.

[0033] In this embodiment, the battery 7 and the alarm 8 are both installed on the air pipe 23. The battery 7 can be a micro battery, for example, a button battery of model SR416SW, etc. Its installation belongs to the prior art, and it will not be described here for the sake of space. The alarm 8 is a light emitting diode or a buzzer, and its installation belongs to the prior art, and it will not be described here for the sake of space. Please refer to Figure 4In this embodiment, the battery 7, the alarm 8 and the automatic reset switch 6 are connected in series through the wire 9, and the wire 9 is located in the wall of the sealing cover 26, the main pipe 21 and the air flushing pipe 23. The automatic reset switch 6 generally includes a normally open type and a normally closed type. In this embodiment, the automatic reset switch 6 adopts a normally open automatic reset switch. When the automatic reset switch 6 is subjected to the pressure of the steel core 3, the power is turned on to energize the alarm 8.

[0034] During use, after flushing one side of the uterus, the embryo flushing tube 100 inserts the steel core 3 into the main tube 21 again and deflates the airbag 4, withdraws the main tube 2 to the uterine body, and slowly turns to insert it into the other side of the uterine horn. During this process, the operator can hold the main tube 2 with one hand and push the steel core 3 toward the closed end with the other hand to ensure that the steel core 3 is always located at the closed end. The steel core 3 presses against the pressure plate 262 and applies pressure to the automatic reset switch 6 through the pressure plate 262. When the automatic reset switch 6 is subjected to the pressure of the steel core 3, the power is turned on to energize the alarm 8. The user can judge the position of the steel core 3 by the working status of the alarm 8, etc.: if the alarm 8 is working, it means that one end of the steel core 3 is located between the closed end and the embryo recovery hole 216. At this time, the steel core 3 will not fall out of the main tube 21 from the embryo recovery hole 216. If the alarm 8 is not working, there is a risk that the steel core 3 will fall out of the main tube 21 from the embryo recovery hole 216. At this time, the operator should continue to push the steel core 3 toward the closed end until the alarm 8 resumes working, thereby preventing the steel core 3 from passing through the embryo recovery hole 216 and causing damage to the inner wall of the uterus.

[0035] It can be understood that the automatic reset switch 6 can also adopt a normally closed automatic reset switch. When in use, the steel core 3 presses against the pressing plate 262, and applies pressure to the automatic reset switch 6 through the pressing plate 262. When the automatic reset switch 6 is subjected to the pressure of the steel core 3, the power supply is disconnected to put the alarm 8 in a non-working state. The user can judge the position of the steel core 3 by the working state of the alarm 8: if the alarm 8 is in a non-working state, it means that one end of the steel core 3 is located between the closed end and the embryo recovery hole 216. At this time, the steel core 3 will not fall out of the main tube 21 from the embryo recovery hole 216. If the alarm 8 works, there is a risk that the steel core 3 will fall out of the main tube 21 from the embryo recovery hole 216. At this time, the operator should continue to push the steel core 3 in the direction of the closed end until the alarm 8 returns to a non-working state. When a normally closed automatic reset switch is used, in order to save electricity, the battery can be unplugged when not in use, or a power switch can be set up separately. The power of the device can be turned off by the power switch when not in use, and the power switch can be turned on when in use. The installation of the power switch belongs to the prior art and will not be repeated here to omit space.

[0036] Please also see Figure 1 and Figure 5The second embodiment of the present invention provides a embryo flushing tube for preventing damage to the cow's uterus. The structure of the embryo flushing tube 100 is roughly the same as that of the first embodiment, and both include a main conduit 2, a steel core 3, an air bag 4, an air intake pipe 5, a battery 7 and an alarm 8. The difference is that in this embodiment, the automatic reset switch 6 is replaced by an induction switch 11.

[0037] The main conduit 2 is a hollow hose, and includes a main conduit 21 and an air-injection pipe 23. One end of the main conduit 21 is a closed end, and the air-injection pipe 23 is connected to the peripheral wall of the other end of the main conduit 21, and the air-injection pipe 23 is connected to the main conduit 21. A plurality of embryo recovery holes 216 are provided on the peripheral wall of the main conduit 21 near the closed end. One end of the steel core 3 extends into the main conduit 21 and can move along the main conduit 21 under force. A trigger component 12 is installed at one end of the steel core 3 located in the main conduit 21. The airbag 4 is installed on the outer peripheral wall of the main conduit 21. The air intake pipe 5 is located in the main conduit 2, and one end of the air intake pipe 5 is located in the main conduit 21 and is connected to the airbag 4, and the other end of the air intake pipe 5 extends into the air-injection pipe 23. The induction switch 11 is installed at the closed end of the main pipe 21. The induction range of the induction switch 11 is smaller than the minimum distance between the embryo recovery hole 216 and the closed end. The battery 7 and the alarm 8 are both installed on the air flushing pipe 23. The battery 7, the alarm 8 and the induction switch 11 are connected in series. When the trigger component 12 is located within the induction range of the induction switch 11, the power supply of the alarm 8 is turned on or off.

[0038] Preferably, the induction switch 11 is a magnetic switch, and the trigger component 12 is an induction magnetic sheet. The magnetic switch is a circuit switch device controlled by a magnetic field signal. When a magnetic substance approaches the sensing range of the magnetic switch, the magnetic switch will send a switch signal. The structure and installation of the magnetic switch belong to the prior art, and will not be described here for the sake of space omission. In the prior art, magnetic switches have a variety of sizes. In this embodiment, a magnetic switch matching the size of the installation space 263 needs to be selected for easy installation. For example, a magnetic switch of model MS18 produced by MISENSOR (Shanghai Mirsheng Sensor Co., Ltd.) can be used. Its size is about Φ3×10mm, which is suitable for installation in the closed end of the embryo tube 100. It can be understood that the induction switch 11 is not limited to a magnetic switch, and other types of induction switches can also be selected. In this embodiment, when the trigger component 12 is located within the sensing range of the induction switch 11, the power supply of the alarm 8 is turned on.

[0039] During use, if the trigger component 12 on the steel core 3 exceeds the sensing range of the inductive switch 11, the power is disconnected, and the alarm 8 no longer works, there is a risk that the steel core 3 will slip out of the main tube 21 from the embryo recovery hole 216. At this time, the operator should continue to push the steel core 3 toward the closed end until the alarm 8 resumes working, thereby preventing the steel core 3 from passing through the embryo recovery hole 216 and causing damage to the inner wall of the uterus. Since the sensing range of the inductive switch 11 is smaller than the minimum distance between the embryo recovery hole 216 and the closed end, the risk of the steel core 3 passing through the embryo recovery hole 216 can be further reduced.

[0040] The above-mentioned embryo punching tube 100 is equipped with an automatic reset switch 6 or an induction switch 11 at the closed end of the main tube 21, and a battery 7 and an alarm 8 are installed at the other end of the main tube 2. When the position of the steel core 3 changes, the working state of the alarm 8 can be changed. When punching embryos, the staff can judge whether the steel core 3 is still in the position between the closed end and the embryo recovery hole 216 through the working state of the alarm 8, so as to adjust the position of the steel core 3 in time to prevent the steel core 3 from passing through the embryo recovery hole 216 and causing damage to the inner wall of the uterus.

[0041] It is understandable that in other embodiments, the automatic reset switch 6 and the induction switch 11 may also be installed outside the side wall of the closed end facing the main pipe 21. In this case, the automatic reset switch 6 and the induction switch 11 should adopt a switch structure with a waterproof design.

[0042] It can be understood that the battery 7 and the alarm 8 can also be installed at the end of the main pipe 21 away from the closed end, or one of the battery 7 and the alarm 8 can be installed at the end of the main pipe 21 away from the closed end, and the other can be installed on the air pipe 23, as long as it is convenient to observe the alarm 8 and charge or replace the battery 7.

[0043] It can be understood that the guide tube 25 can be omitted, and in this case, the steel core 3 directly extends into the main tube 21.

[0044] It can be understood that the air intake pipe 5 can also be an air intake passage arranged in the pipe walls of the main pipe 21 and the flushing pipe 23 .

[0045] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modified changes completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A embryo-washing tube (100) for preventing damage to the uterus of a cow, characterized in that: The invention comprises a main conduit (2), a steel core (3), an air bag (4), an air inlet pipe (5), an automatic reset switch (6), a battery (7) and an alarm (8), wherein the main conduit (2) is a hollow hose, and the main conduit (2) comprises a main pipe (21) and an air flushing pipe (23), one end of the main pipe (21) is a closed end, the other end of the main pipe (21) is connected to the surrounding wall of the main pipe (21), the air flushing pipe (23) is in communication with the main pipe (21), and a plurality of embryo recovery holes (216) are formed through the surrounding wall of the main pipe (21) near the closed end; one end of the steel core (3) extends into the main pipe (21) and can be forced to move along the main pipe (21); the air bag (4) is connected to the surrounding wall of the main pipe (21) near the closed end; the air inlet pipe (216) is connected to ... the air inlet pipe (216) is connected to the surrounding wall of the main pipe (21) near the closed end; the air inlet pipe (216) is connected to the surrounding wall of the main pipe (21) and the air inlet pipe (21) is connected to the surrounding wall of the main pipe (21) near the closed end; the air inlet pipe (216) is connected to the surrounding wall of the main pipe (21) and the air inlet pipe (21) is connected to the surrounding wall of the main pipe (21) and the air inlet pipe (21) is connected to the surrounding wall of the main pipe (21) and the air in The bag (4) is mounted on the outer peripheral wall of the main pipe (21); one end of the air intake pipe (5) is located in the main pipe (21) and communicates with the air bag (4), and the other end of the air intake pipe (5) extends into the flushing pipe (23); the automatic reset switch (6) is mounted at the closed end of the main pipe (21), the battery (7) and the alarm (8) are mounted on the end of the main pipe (21) away from the closed end and / or the flushing pipe (23), and the battery (7), the alarm (8) and the automatic reset switch (6) are connected in series; the automatic reset switch (6) turns on or off the power supply of the alarm (8) when the pressure of the steel core (3) is applied; The main pipe (21) has a first opening (212) and a second opening (214) which are arranged opposite to each other, and the first opening (212) and the second opening (214) are both in communication with the inner cavity of the main pipe (21); a sealing cover (26) is installed at the first opening (212) of the main pipe (21) to seal the first opening (212); the sealing cover (26) constitutes the closed end, and the automatic reset switch (6) is accommodated in the sealing cover (26); The sealing cover (26) comprises a cover body (261) and a pressure plate (262); an installation space (263) with an opening at one end is formed in the cover body (261); the cover body (261) is connected to the main pipe (21) and the opening of the cover body (261) faces the main pipe (21); the pressure plate (262) is installed at the opening of the cover body (261) and is used to close the opening of the cover body (261); the pressure plate (262) can be elastically deformed under force; the automatic reset switch (6) is installed in the installation space (263); The alarm (8) is a light emitting diode or a buzzer; the air intake pipe (5) is a thin tube built into the main conduit (2), and the air intake pipe (5) is isolated from the inner cavity of the main conduit (2); When the position of the steel core (3) changes, the working state of the alarm (8) can be changed. When punching embryos, the staff can judge whether the steel core (3) is still located between the closed end and the embryo recovery hole (216) through the working state of the alarm (8), so as to adjust the position of the steel core (3) in time and prevent the steel core (3) from passing through the embryo recovery hole (216) and causing damage to the inner wall of the uterus.

2. The embryo punching tube (100) according to claim 1, characterized in that: The battery (7) and the alarm (8) are both mounted on an end of the main pipe (21) away from the closed end.

3. The embryo punching tube (100) according to claim 1, characterized in that: The battery (7) and the alarm (8) are both mounted on the gas flushing pipe (23). The battery (7), the alarm (8) and the automatic reset switch (6) are connected in series via an electric wire (9). The electric wire (9) is located inside the wall of the closed end, the main pipe (21) and the gas flushing pipe (23).

4. The embryo punching tube (100) according to claim 1, characterized in that: A protrusion (41) is provided on the outer wall of the airbag (4).

5. The embryo punching tube (100) according to claim 1, characterized in that: The main pipe (21) and the air flushing pipe (23) are both made of silica gel.

6. A embryonic tube for preventing damage to the uterus of a cow, characterized in that: The invention comprises a main conduit (2), a steel core (3), an air bag (4), an air intake pipe (5), an induction switch (11), a battery (7) and an alarm (8), wherein the main conduit (2) is a hollow hose, and the main conduit (2) comprises a main conduit (21) and an air flushing pipe (23), one end of the main conduit (21) is a closed end, and the air flushing pipe (23) is connected to the peripheral wall of the other end of the main conduit (21), and the air flushing pipe (23) is in communication with the main conduit (21), and a plurality of embryonic openings are provided on the peripheral wall of the main conduit (21) near the closed end. The steel core (3) has a recovery hole (216); one end of the steel core (3) extends into the main pipe (21) and is capable of moving along the main pipe (21) under force, and one end of the steel core (3) located in the main pipe (21) is provided with a trigger component (12); the air bag (4) is provided on the outer peripheral wall of the main pipe (21); one end of the air intake pipe (5) is located in the main pipe (21) and is connected to the air bag (4), and the other end of the air intake pipe (5) extends into the flushing pipe (23); the induction switch (11) is provided on the The induction switch (11) is located at the closed end of the main pipe (21), the induction range of the induction switch (11) is smaller than the minimum distance between the embryo recovery hole (216) and the closed end, the battery (7) and the alarm (8) are installed on the end of the main pipe (21) away from the closed end and / or the flushing pipe (23), the battery (7), the alarm (8) and the induction switch (11) are connected in series; when the trigger component (12) is located within the induction range of the induction switch (11), the power of the alarm (8) is turned on or off. source; the induction switch (11) is a magnetic switch, and the trigger component (12) is an induction magnetic sheet; when the position of the steel core (3) changes, the working state of the alarm (8) can be changed. When punching embryos, the staff can judge whether the steel core (3) is still in the position between the closed end and the embryo recovery hole (216) through the working state of the alarm (8), so as to adjust the position of the steel core (3) in time and prevent the steel core (3) from passing through the embryo recovery hole (216) and causing damage to the inner wall of the uterus.

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