Intrauterine continuous insemination device for livestock

Abstract

The invention belongs to the technical field of livestock artificial insemination, and relates to a livestock intrauterine continuous insemination device which comprises a device body, an injection channel is arranged in the device body in a penetrating mode, an injection head is arranged at one end of the injection channel, a filling hole is formed in one side of the device body and communicated with the injection channel, and a sealing cover is detachably arranged in the filling hole. The device further comprises a protection mechanism and a reset mechanism. The first protective shell is matched with the second protective shell, the first protective shell and the second protective shell are made to rotate inwards through the reset mechanism, and the first protective shell and the second protective shell are oppositely buckled to form the cavity for containing the injection head, so that the injection head is protected, and the injection head is protected when the device is idle and carried; by arranging the filling holes, semen samples do not need to be repeatedly supplemented when different female livestock individuals are injected, the flexibility of continuous insemination is improved, meanwhile, the infection risk during female livestock insemination is further reduced, and the operation difficulty is also reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of artificial insemination of livestock, and in particular relates to a continuous intrauterine insemination device for livestock. Background Art

[0002] Artificial insemination of livestock refers to a breeding technology that uses special instruments to artificially collect male animal semen, which is then inserted into the reproductive tract of estrus female animals after in vitro examination and treatment to achieve conception. In modern agriculture, artificial insemination of livestock has become very common, especially in dairy cows and pigs. Artificial insemination provides livestock producers with a relatively economical way to obtain excellent breeding stock.

[0003] In the prior art, the artificial insemination injection device has the problem of inconvenient control of the injection amount during injection. Too much or too little sperm injected will affect the fertilization rate. For example, Chinese patent No. CN221691482U discloses a transcervical intrauterine insemination device for sheep, including a gun head, a gun cover and a delivery tube; a docking joint is fixed on the right side of the gun head, and the docking joint extends to the right, and a docking cavity is formed in the inner cavity of the docking joint, a perfusion port is formed on the front side of the gun head, and a filling cavity is formed in the inner cavity of the gun head, and the perfusion port It is interconnected with the filling cavity inwardly, and a semen delivery head is arranged on the left side of the filling cavity; a buckle is arranged on the left side of the inner cavity of the gun head, and the buckle is embedded in the side wall of the inner cavity of the gun head. The gun cover as a whole is a cone with a small left side and a large right side. A clamping ring is arranged on the right side of the gun cover, and a semen delivery port is opened in the inner cavity of the clamping ring. After use, the injection head can be removed by pressing the elastic buckle. The detachable injection head has good replaceability, which is convenient for replacing injection heads of different sizes to adapt to different livestock, so that the device has a wider range of use. However, the device still has the above-mentioned problems. Summary of the invention

[0004] In view of this, the present invention provides a continuous intrauterine insemination device for livestock, which can facilitate the control of injection volume and improve the fertilization rate.

[0005] The technical solution of the present invention is:

[0006] The present invention provides a continuous intrauterine insemination device for livestock, comprising a device body, an injection channel being provided through the inside of the device body, and the device body comprising:

[0007] A first rod body, wherein a filling cavity is provided inside the rod body, and the injection channel is communicated with the filling cavity;

[0008] A sealing plug is slidably disposed inside the filling cavity, one side of the sealing plug is connected to a piston rod, the piston rod is slidably connected to the first rod body, and one end of the piston rod extends out of the first rod body;

[0009] The limiting structure includes a limiting plate and a linear displacement driving assembly. The limiting plate is arranged inside the filling cavity. The linear displacement driving assembly has a linear movement output end. The linear movement output end is connected to the limiting plate and is used to drive the limiting plate to move. The moving direction is parallel to the sliding direction of the sealing plug. The limiting plate is used to limit the sliding range of the sealing plug.

[0010] Preferably, the linear displacement drive assembly includes a rack, a gear, and an adjusting knob. The rack is integrally arranged with the limit plate, the gear is rotatably arranged inside the first rod body, the gear is meshed with the rack, the gear is fixedly connected to the adjusting knob, the adjusting knob is arranged outside the first rod body, and the adjusting knob is rotatably connected to the first rod body.

[0011] Preferably, a positioning groove is provided on the first rod body, the positioning groove matches the shape of the gear, the gear can move in the first rod body, and the adjusting knob can drive the gear to move into the positioning groove along the axial direction of the gear.

[0012] Preferably, a pull ring is provided at the other end of the piston rod, and hand grips are symmetrically provided on both sides of the first rod body.

[0013] Preferably, an injection head is arranged at one end of the first rod body, and a protection mechanism is arranged on the first rod body, the protection mechanism includes a first protective shell and a second protective shell, the first protective shell and the second protective shell are arranged relative to each other to form a chamber for accommodating the injection head, and the ends of the first protective shell and the second protective shell away from the injection head are both rotatably connected to the device body.

[0014] Preferably, a reset mechanism is arranged between the first protective shell, the second protective shell and the device body, and the reset mechanism includes a first elastic member and a limiting protrusion. A first elastic member is arranged between the first protective shell, the second protective shell and the device body, and the limiting protrusion is arranged on one side of the first protective shell, and a limiting groove matching the limiting protrusion is arranged on one side of the second protective shell.

[0015] Preferably, a ring is sleeved on the first rod body, the ring is slidably connected to the first rod body, the first protective shell and the second protective shell are both hinged to the ring, one end of the first elastic member is fixedly connected to the ring, and the other end is fixedly connected to the corresponding first protective shell or the second protective shell.

[0016] Preferably, a through hole is provided on the first rod body, a cross bar is slidably arranged in the through hole, the sliding direction of the cross bar is along the length direction of the first rod body, a second elastic member is provided in the through hole, one end of the second elastic member is connected to the cross bar, and the other end is connected to the inner wall of the through hole, and the end of the cross bar extends out of the through hole and is fixedly connected to the ring.

[0017] Preferably, a filling hole is provided on one side of the first rod body, the filling hole is connected to the filling cavity, a sealing cover is detachably provided in the filling hole, and also includes a sperm storage structure, the sperm storage structure includes a storage tank and a sperm storage sac, the sperm storage sac is arranged inside the storage tank, there is a gap between the sperm storage sac and the inner wall of the storage tank, a filling port is provided on the top of the storage tank, and the outlet of the sperm storage sac is used to be connected to the filling hole.

[0018] Preferably, the sperm storage structure further comprises a temperature detection component, and the temperature detection component is arranged inside the storage tank, and the temperature detection component is located outside the sperm storage sac.

[0019] Compared with the prior art, the present invention provides a livestock intrauterine continuous insemination device, which has the following beneficial effects:

[0020] The present invention sets a limit plate inside the filling cavity and adjusts the moving position of the limit plate through a linear displacement driving component, so that during injection, the sealing plug is driven to move by the piston rod, and the sealing plug pushes the semen inside the filling cavity to be ejected through the injection channel for artificial insemination. The limit plate limits the moving range of the sealing plug, which can control the single injection volume, thereby improving the fertilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is an exploded schematic diagram of the overall structure of the present invention.

[0023] Figure 3 It is an overall front view schematic diagram of the present invention.

[0024] Figure 4 It is a schematic diagram of the overall morphological change of the present invention.

[0025] Figure 5 It is a schematic cross-sectional view of the interior of the first rod body of the present invention.

[0026] Figure 6 It is a schematic cross-sectional view of the interior of the sperm storage structure of the present invention.

[0027] Figure 7 The present invention Figure 5 A magnified view of the structure in the middle.

[0028] Figure 8 The present invention Figure 5 Side view of the local structure at point A in the middle.

[0029] Description of reference numerals:

[0030] 1. Device body; 2. Second rod body; 3. First rod body; 4. Ring; 5. Reset mechanism; 6. Pull ring; 7. Protection mechanism; 8. Piston rod; 9. Hand-held part; 10. Adjustment knob; 11. Fixing screw; 12. Sperm storage structure; 51. Through hole; 52. Cross bar; 53. Second elastic member; 71. First hinge seat; 72. Second hinge seat; 73. Pin shaft; 74. First protective shell; 75. Second protective shell; 76. Notch; 77. Limiting protrusion; 78. First elastic member; 101. Rack; 102. Positioning groove; 103. Gear; 104. Transmission rod; 121. Storage tank; 122. Temperature detection member; 123. Temperature probe; 124. Filling port; 125. Sperm storage vesicle. DETAILED DESCRIPTION

[0031] It should be noted that, in the description of the present invention, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] In addition, it should be noted that the connections involved in the present invention can be achieved by using conventional connection methods and do not involve any innovation.

[0034] The subject matter of the present invention is a continuous intrauterine insemination device for livestock. The insemination device is a tool commonly used in the field of artificial insemination for artificial breeding. Its main function is to accurately deliver semen into the uterus of the female livestock. The insemination device is usually made of stainless steel, plastic or other materials. The overall shape is similar to a long gun, consisting of a sperm storage vesicle, a vas deferens and a gun head. The working principle of the insemination device is: first install the sperm storage vesicle filled with semen into the filling hole of the gun head, connect the gun head and the appropriate vas deferens, and then the breeder inserts the vas deferens into the uterus of the female livestock and pushes the semen into the uterus through the handle.

[0035] The existing Chinese patent with publication number CN221691482U discloses a transcervical intrauterine insemination device for sheep, comprising a gun head, a gun cover and a delivery tube; a docking joint is fixed on the right side of the gun head, and the docking joint extends to the right, a docking cavity is provided in the inner cavity of the docking joint, a perfusion port is provided on the front side of the gun head, a filling cavity is provided in the inner cavity of the gun head, the perfusion port is in communication with the filling cavity, and a sperm delivery head is provided on the left side of the filling cavity; a buckle is provided on the left side of the inner cavity of the gun head, the buckle is embedded in the inner cavity side wall of the gun head, and the gun cover is provided. The overall shape is a cone that is smaller on the left and larger on the right. A clamp is provided on the right side of the gun cover. The inner cavity of the clamp is provided with an insemination port. After use, the injection head can be removed by pressing the elastic buckle. The detachable injection head has good replaceability, which is convenient for replacing injection heads of different sizes to adapt to different livestock, making the insemination gun have a wider range of uses; although the device solves the above-mentioned shortcomings, the device lacks protection for the injection head when it is idle and carried; the device requires repeated addition of semen, which increases the probability of semen contamination and easily causes infection of the female animal; the device lacks the function of quantitative and accurate insemination. Therefore, the existing insemination device cannot meet the sterility requirements, easily breeds bacteria, and causes infection of the female animal.

[0036] Based on the above reasons, the present invention provides a continuous intrauterine insemination device for livestock to solve the above-mentioned technical problems. Figures 1 to 8 , the present invention is described in detail.

[0037] Example 1

[0038] The present embodiment provides a device for continuous intrauterine insemination of livestock. In order to achieve accurate control of the amount of insemination each time, the device body 1 includes a first rod body 3, a sealing plug, and a piston rod 8. A filling cavity is provided in the first rod body 3. An injection channel is provided through the second rod body 2 and the first rod body 3. The injection channel is connected to the filling cavity. A sealing plug is slidably provided inside the filling cavity. The sealing plug is connected to the piston rod 8. A pull ring 6 is provided at the other end of the piston rod 8. Hand grips 9 are symmetrically provided on both sides of the first rod body 3. An injection syringe structure is formed by the piston rod 8 and the first rod body 3. A limiting structure is provided on the first rod body 3, and the limiting structure is used to limit the sealing plug.

[0039] In this embodiment, the limiting structure includes a rack 101, a gear 103, and an adjusting knob 10. The rack 101 is slidably arranged inside the first rod body 3, the gear 103 is rotatably arranged inside the first rod body 3, the gear 103 is meshed with the rack 101, the gear 103 is fixedly connected to the adjusting knob 10, the adjusting knob 10 is arranged outside the first rod body 3, and the adjusting knob 10 is rotatably connected to the first rod body 3.

[0040] The adjustment knob 10 rotates to drive the gear 103 to rotate through the transmission rod; the gear 103 meshes with the rack 101, and the rotation of the gear 103 drives the rack 101 to move up and down; after adjusting the rack 101, the transmission rod is pushed to drive a part of the gear 103 to insert into the positioning groove 102, and the other part is meshed with the rack 101. The positioning groove 102 prevents the gear 103 from rotating and also prevents the rack 101 from moving up and down.

[0041] The device body 1 is an injection connection sleeve, one end of the first rod body 3 is connected to the second rod body 2, and an injection pipe is arranged inside the second rod body 2 and the first rod body 3. The injection connection sleeve enhances the practicability of the device and facilitates flexible assembly and disassembly. The second rod body 2 is used to connect the vas deferens, and the fixing screw 11 on the second rod body 2 can be adjusted to adapt to vas deferens of different sizes.

[0042] By setting a limit plate inside the filling cavity and adjusting the moving position of the limit plate through the linear displacement drive assembly, during injection, the piston rod drives the sealing plug to move, and the sealing plug pushes the semen inside the filling cavity through the injection channel for artificial insemination. The limit plate limits the moving range of the sealing plug, which can control the single injection volume, thereby improving the fertilization rate. Compared with a syringe with a scale, the gear rack can directly clamp the syringe, so there is no need to look at the scale and inject slowly, which improves work efficiency, while increasing sperm speed and further improving the fertilization rate.

[0043] Example 2

[0044] In order to reduce the risk of infection during insemination of female animals, based on embodiment 1, this embodiment further includes a protection mechanism 7 and a reset mechanism 5 .

[0045] The protection mechanism 7 is arranged on the device body 1, and the protection mechanism 7 includes a first protection shell 74 and a second protection shell 75. The first protection shell 74 and the second protection shell 75 are arranged opposite to each other to form a chamber for accommodating the injection head. The first protection shell 74 and the second protection shell 75 are rotatably connected to the device body 1 at one end away from the injection head. The reset mechanism 5 is arranged between the first protection shell 74, the second protection shell 75 and the device body 1, and the reset mechanism 5 is used to drive the first protection shell 74 and the second protection shell 75 to rotate relative to each other so that the two are interlocked.

[0046] By cooperating the first protective shell with the second protective shell and utilizing the reset mechanism to rotate the first protective shell and the second protective shell inward, the first protective shell and the second protective shell are relatively buckled to form a chamber for accommodating the injection head, thereby protecting the injection head. The injection head is protected when the device is idle and carried, thereby reducing the risk of infection in the female animal. By setting the filling hole, when continuously inseminating between different individuals, only a new needle needs to be switched, and there is no need to repeatedly replenish the semen sample, thereby improving the flexibility of continuous insemination, while further reducing the risk of infection during insemination in the female animal, and also reducing the difficulty of operation.

[0047] In this embodiment, the reset mechanism 5 includes a first elastic member 78 and a limiting protrusion 77. The first elastic member 78 is arranged between the first protective shell 74, the second protective shell 75 and the device body 1. The limiting protrusion 77 is arranged on one side of the first protective shell 74, and a limiting groove matching the limiting protrusion 77 is arranged on one side of the second protective shell 75.

[0048] The resilience of the first elastic member 78 can automatically protect the injection head when it is idle.

[0049] Furthermore, the device body 1 includes a first rod body 3, the injection channel passes through the first rod body 3, a ring 4 is sleeved on the first rod body 3, the ring 4 is slidably connected to the first rod body 3, the first protective shell 74 and the second protective shell 75 are both hinged to the ring 4, one end of the first elastic member 78 is fixedly connected to the ring 4, and the other end is fixedly connected to the corresponding first protective shell 74 or the second protective shell 75.

[0050] A second hinge seat 72 is arranged on one side of the first hinge seat 71, a pin shaft 73 is arranged running through the interior of the first hinge seat 71 and the second hinge seat 72, a first protective shell 74 and a second protective shell 75 are arranged on one side of the first hinge seat 71 and the second hinge seat 72 respectively, and a notch 76 is arranged on one side of the first protective shell 74 and the second protective shell 75.

[0051] Furthermore, a through hole 51 is provided on the first rod body 3, a cross bar 52 is slidably provided in the through hole 51, the sliding direction of the cross bar 52 is along the length direction of the first rod body 3, a second elastic member 53 is provided in the through hole 51, one end of the second elastic member 53 is connected to the cross bar 52, and the other end is connected to the inner wall of the through hole 51, and the end of the cross bar 52 extends out of the through hole 51 and is fixedly connected to the collar 4. The cross-sectional shapes of the through hole 51 and the cross bar 52 are both rectangular.

[0052] Rapid protection and reset are achieved by the second elastic member 53 rebounding and compressing inside the through hole 51. The second elastic member 53 limits the maximum range of motion to avoid improper operation.

[0053] When in use, the support at the bottom of the first protective shell 74 and the second protective shell 75 is released to allow the first elastic member 78 to rebound, allowing the first protective shell 74 and the second protective shell 75 to flip inward with the pin shaft 73 as the center. Figure 3 shape, and at the same time, the limiting protrusion 77 matches the limiting groove, thereby protecting the injection head of the device body 1, so that the device will not be damaged due to collision during transportation or dust and bacteria will not grow when idle, avoiding infection when used by livestock.

[0054] During the insemination process, semen samples are supplemented through the filling hole opened on the surface of the first rod body, thereby improving the flexibility of continuous insemination and reducing the risk of infection during insemination of female animals.

[0055] Example 3

[0056] In order to facilitate the operation of continuous insemination between different individuals, based on Example 1 and Example 2, this embodiment provides a sperm storage structure matching the filling hole, the filling hole 31 is opened on the outer peripheral surface of the first rod body 3, the filling hole 31 is communicated with the filling cavity, the sperm storage structure 12 includes a storage tank 121 and a sperm storage sac 125, the sperm storage sac 125 is arranged inside the storage tank 121, there is a gap between the sperm storage sac 125 and the inner wall of the storage tank 121, and a filling port 124 is arranged on the top of the storage tank 121, and the outlet of the sperm storage sac 125 is used to communicate with the filling hole 31.

[0057] In order to ensure sperm activity, the sperm storage structure 12 further includes a temperature detection component 122 . The temperature detection component 122 is disposed inside the storage tank 121 and outside the sperm storage vesicle 125 .

[0058] The internal insulation material of the tank wall and the constant temperature liquid in the tank can keep the semen in the seminal vesicle warm to ensure the activity of sperm.

[0059] The method for using the continuous intrauterine insemination device for livestock provided by the present invention is as follows:

[0060] Preparation for operation on the sperm storage structure 12:

[0061] 1) Open the filling port 124, adjust the water temperature to the appropriate level according to the temperature detection element 122 and add the semen, and cover the container with a sealing cap after filling.

[0062] 2) Add the prepared semen into the seminal vesicle 125 .

[0063] 3) Connect the sperm storage structure 12 to the filling hole on the first rod body 3.

[0064] Preparing females for insemination:

[0065] 1) Once ready, secure the female animal on the insemination rack, secure the tail, and clean and disinfect the vulva.

[0066] 2) Select a suitable vaginal opener and insert it into the vagina. With the help of a headlight, use a forceps with sterile gauze dressing to absorb and clean the mucus in the vagina.

[0067] 3) Spray lidocaine hydrochloride into the vagina and cervix, select the dosage according to the type of female livestock (e.g. 2 sprays for sheep each time, about 32 mg), repeat after 5 minutes, and the cumulative action time is 10 minutes.

[0068] 4) Insert the cavity opener into the vagina, and with the help of a headlight, insert the uterine clamp from the side of the cavity opener into the vagina, clamp the tissue around the external cervical opening, withdraw the cavity opener and uterine clamp simultaneously and slowly pull the cervix to the vestibule or vaginal opening, remove the cavity opener, fix the uterine clamp and cervical opening with one hand, and insert the vas deferens slowly and deeply into the cervical opening with the other hand.

[0069] Working principle: When in use, the first protective shell 74 and the second protective shell 75 are turned outward with the pin shaft 73 as the center until Figure 4 The state is that the sperm sample is supplemented by connecting the sperm storage structure through the filling hole on the surface of the first rod body 3, thereby improving the flexibility of continuous insemination. The single insemination volume is accurately controlled by adjusting the knob 10, and then the piston rod 8 is driven to move and absorb the collected sperm sample by pulling the pull ring 6; the index finger and middle finger of one hand are respectively supported on the bottom of the first protective shell 74 and the second protective shell 75, and the hand-held part 9 is pressed to push the first rod body 3 to move in the same direction, so that the second elastic member 53 is compressed inside the through hole 51, and at the same time, the first rod body 3 pushes the second rod body 2 to push the vas deferens in the device body 1 into the uterine body, and then the thumb is placed on the pull ring 6 for injection to realize artificial controllable precise insemination; after use, the device is separated from the fertilization target as a whole, and the second elastic member 53 rebounds to drive the device body 1 to move in the same direction to shorten the length, and then the support at the bottom of the first protective shell 74 and the second protective shell 75 is released, so that the first elastic member 78 rebounds, and the first protective shell 74 and the second protective shell 75 are turned inward with the pin shaft 73 as the center. Figure 3 state, and at the same time, the limiting protrusion 77 is inserted into the limiting groove, so as to protect the injection head of the device body 1, so that the device will not be damaged due to collision during transportation or dust and bacteria will not grow when idle, avoiding infection when it is used on livestock next time.

[0070] The above disclosure is only a preferred specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A continuous intrauterine insemination device for livestock, comprising a device body (1) having an injection channel extending therethrough, characterized in that: The device body (1) comprises: A first rod body (3) is provided with a filling cavity inside, and the injection channel is communicated with the filling cavity; a sealing plug slidably disposed inside the filling cavity, a piston rod (8) being connected to one side of the sealing plug, the piston rod (8) being slidably connected to the first rod body (3), and one end of the piston rod (8) extending out of the first rod body (3); The limiting structure includes a limiting plate and a linear displacement driving assembly. The limiting plate is arranged inside the filling cavity. The linear displacement driving assembly has a linear movement output end. The linear movement output end is connected to the limiting plate and is used to drive the limiting plate to move. The moving direction is parallel to the sliding direction of the sealing plug. The limiting plate is used to limit the sliding range of the sealing plug.

2. The continuous intrauterine insemination device for livestock according to claim 1, characterized in that: The linear displacement drive assembly comprises a rack (101), a gear (103), and an adjusting knob (10); the rack (101) and the limit plate are integrally arranged; the gear (103) is rotatably arranged inside the first rod body (3); the gear (103) is meshed with the rack (101); the gear (103) is fixedly connected to the adjusting knob (10); the adjusting knob (10) is arranged outside the first rod body (3); and the adjusting knob (10) is rotatably connected to the first rod body (3).

3. The continuous intrauterine insemination device for livestock according to claim 2, characterized in that: The first rod body (3) is provided with a positioning groove (102), the positioning groove (102) matches the shape of the gear (103), the gear (103) and the adjusting knob (10) are both slidably connected to the first rod body (3), and the sliding direction is parallel to the axial direction thereof, and the gear (103) can be driven to slide into the positioning groove (102) by moving the adjusting knob (10).

4. The continuous intrauterine insemination device for livestock according to claim 1, characterized in that: A pull ring (6) is provided at the other end of the piston rod (8), and hand grips (9) are symmetrically provided on both sides of the first rod body (3).

5. The continuous intrauterine insemination device for livestock according to claim 1, characterized in that: An injection head is arranged at one end of the first rod body (3), and a protection mechanism (7) is arranged on the first rod body (3). The protection mechanism (7) comprises a first protection shell (74) and a second protection shell (75). The first protection shell (74) and the second protection shell (75) are arranged relative to each other to form a chamber for accommodating the injection head. The ends of the first protection shell (74) and the second protection shell (75) away from the injection head are both rotatably connected to the device body (1).

6. The continuous intrauterine insemination device for livestock according to claim 5, characterized in that: A reset mechanism (5) is arranged between the first protective shell (74), the second protective shell (75) and the device body (1), and the reset mechanism (5) comprises a first elastic member (78) and a limiting protrusion (77). A first elastic member (78) is arranged between the first protective shell (74), the second protective shell (75) and the device body (1), and the limiting protrusion (77) is arranged on one side of the first protective shell (74), and a limiting groove matching the limiting protrusion (77) is arranged on one side of the second protective shell (75).

7. The continuous intrauterine insemination device for livestock according to claim 6, characterized in that: A collar (4) is sleeved on the first rod body (3), the collar (4) is slidably connected to the first rod body (3), the first protective shell (74) and the second protective shell (75) are both hinged to the collar (4), one end of the first elastic member (78) is fixedly connected to the collar (4), and the other end is fixedly connected to the corresponding first protective shell (74) or second protective shell (75).

8. The continuous intrauterine insemination device for livestock according to claim 7, characterized in that: The first rod body (3) is provided with a through hole (51), a cross bar (52) is slidably arranged in the through hole (51), and the sliding direction of the cross bar (52) is along the length direction of the first rod body (3). A second elastic member (53) is arranged in the through hole (51), one end of the second elastic member (53) is connected to the cross bar (52), and the other end is connected to the inner wall of the through hole (51), and the end of the cross bar (52) extends out of the through hole (51) and is fixedly connected to the collar (4).

9. The continuous intrauterine insemination device for livestock according to claim 1, characterized in that: A loading hole (31) is provided on one side of the first rod body (3), the loading hole (31) is communicated with the loading cavity, a sealing cover is detachably provided in the loading hole (31), and the first rod body (3) further comprises a sperm storage structure (12), the sperm storage structure (12) comprises a storage tank (121) and a sperm storage sac (125), the sperm storage sac (125) is arranged inside the storage tank (121), a gap is provided between the sperm storage sac (125) and the inner wall of the storage tank (121), a filling port (124) is provided on the top of the storage tank (121), and the outlet of the sperm storage sac (125) is used to communicate with the loading hole (31).

10. The continuous intrauterine insemination device for livestock according to claim 9, characterized in that: The sperm storage structure (12) further comprises a temperature detection component (122), wherein the temperature detection component (122) is arranged inside the storage tank (121), and the temperature detection component (122) is located outside the sperm storage sac (125).

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