Cervical dilation device for bovine embryo transplantation

Abstract

The invention belongs to the technical field of embryo transplantation, and particularly relates to a cervix dilation device for bovine embryo transplantation, which comprises a handheld part, a dilation part, a wiping mechanism, a liquid supply mechanism and a storage mechanism, the handheld part comprises a mounting shell and a storage box fixedly mounted at the bottom of the mounting shell; the expansion mechanism comprises a supporting pipe, a control wheel and an extrusion wheel, a through hole allowing the supporting pipe to slide is formed in the outer wall of the mounting shell, the extrusion wheel is used for extruding the supporting pipe and elastically arranged in the mounting shell, the control wheel is rotationally mounted in the mounting shell, and the radial outer wall of the control wheel is attached to the outer wall of the supporting pipe; the wiping mechanism comprises a mounting ring and a wiping layer, the mounting ring is of a hollow structure and is rotatably mounted on the inner wall of the mounting shell, and the wiping layer is fixedly mounted on the inner wall of the mounting ring; the liquid supply mechanism is used for providing disinfectant for the inner cavity of the mounting ring; the storage mechanism comprises a storage box and an elastic strip; through cooperation of the structure, the maternal stress reaction is effectively reduced, and the embryo transplantation success rate and the operation safety are improved.

Description

Technical Field

[0001] This invention belongs to the field of embryo transfer technology, specifically a cervical dilation device for bovine embryo transfer. Background Technology

[0002] In bovine embryo transfer, successful passage of the cervix is ​​a crucial prerequisite for ensuring successful embryo implantation. The bovine cervix has a unique anatomical structure with a narrow lumen and transverse folds. Under normal conditions, it is closed to maintain the stability of the uterine environment. This physiological structure forms a natural obstacle during embryo transfer. Without pre-dilation, the transfer instrument cannot pass through the cervical canal to reach the uterine horn. Forced operation can easily lead to tearing of the folds, mucosal bleeding, and even cervical canal adhesions, severely disrupting the physiological environment for embryo implantation and significantly reducing the success rate of transfer. Therefore, appropriate dilation and support of the cervix is ​​a necessary procedure to ensure the smooth passage of transfer instruments and reduce tissue damage.

[0003] Traditional dilation devices are mostly made of metal or hard plastic, and their surfaces often have microscopic textures due to the manufacturing process. When in contact with the soft cervical mucosa, these uneven structures can cause mechanical friction, damaging the integrity of the mucosal epithelium and triggering a local inflammatory response. At the same time, the temperature of these devices differs significantly from the mother's body temperature (38-39℃). When these low-temperature devices enter the body, they can stimulate the cervical smooth muscle through heat conduction, causing spasmodic contractions. This increases operational resistance and may also lead to an increase in maternal stress hormone levels through nerve reflexes, interfering with the stability of the uterine environment. In addition, to reduce the risk of infection, the devices need to be treated with chemical disinfectants. Residual disinfectants or lubricants used in the procedure can alter the physiological pH value in the cervical canal, disrupting the bacterial balance, weakening the natural defense function of the mucosa, and further exacerbating the mother's stress response.

[0004] These multidimensional stimuli not only increase the difficulty of the procedure and prolong the operation time, but may also reduce the success rate of embryo transfer by affecting the local microenvironment of the cervix and the overall physiological state of the mother.

[0005] Therefore, the present invention provides a cervical dilation device for bovine embryo transfer. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a cervical dilation device for bovine embryo transfer, comprising a hand-held part, a dilation part, a wiping mechanism, a liquid supply mechanism and a storage mechanism; The handheld unit includes a mounting housing and a storage box fixedly mounted on the bottom of the mounting housing; The expansion mechanism includes a support tube, a control wheel, and a compression wheel. The outer wall of the mounting shell has a through hole for the support tube to slide. The compression wheel is used to compress the support tube and is elastically set inside the mounting shell. The control wheel is rotatably installed inside the mounting shell, and its radial outer wall is in contact with the outer wall of the support tube. The wiping mechanism includes a mounting ring and a wiping layer. The mounting ring is a hollow structure and is rotatably mounted on the inner wall of the mounting shell. The wiping layer is fixedly mounted on the inner wall of the mounting ring. The liquid supply mechanism is used to provide disinfectant to the inner cavity of the mounting ring; The storage mechanism includes a storage box and an elastic strip. The storage box is detachably mounted on the inner wall of the mounting housing, and one end of the elastic strip extends into the interior of the storage box.

[0008] Preferably, the inner wall of the mounting housing is slidably mounted with a mounting bracket via an elastic element, and the side wall of the extrusion wheel is rotatably connected to the mounting bracket via a pin. A steering box is fixedly installed on the inner wall of the mounting housing, and a transmission worm gear is rotatably installed on the inner wall of the steering box. A roller that fits against the control wheel is provided at the axial end of the transmission worm gear. The inner wall of the steering box is rotatably mounted with a transmission worm gear that meshes with the transmission worm wheel.

[0009] Preferably, a guide cylinder is fixedly installed on the outer wall of the mounting shell, and a control cylinder is elastically installed on the inner wall of the guide cylinder; A guide bead is fixedly installed on the inner wall of the control cylinder, and a sliding shaft is slidably installed on the inner wall of the control cylinder. A first spiral groove is opened on the radial outer wall of the sliding shaft to slide and cooperate with the guide bead. The sliding shaft is connected to the axial end of the transmission worm gear via a one-way bearing.

[0010] Preferably, a control ring is slidably mounted on the outer wall of the mounting ring, a guide strip that is slidably connected to the control ring is fixedly mounted on the inner wall of the mounting shell, a transmission ball is fixed on the inner wall of the control ring, and a second helical groove is formed on the radial outer wall of the mounting ring, with the outer wall of the transmission ball slidingly fitted with the second helical groove.

[0011] Preferably, the liquid supply mechanism includes a storage cylinder, a control plug, and an adapter ring. The adapter ring is connected to the mounting ring via a sealed bearing. The storage cylinder is fixedly installed on the inner wall of the mounting housing, and the outer wall of the control plug is slidably fitted against the inner wall of the storage cylinder. The outer wall of the storage cylinder is equipped with a one-way liquid inlet pipe and a liquid outlet pipe. The storage cylinder is connected to the adapter ring through the liquid outlet pipe, and the storage cylinder is connected to the inner cavity of the storage tank through the liquid inlet pipe.

[0012] Preferably, an installation plate is fixedly installed on the outer wall of the control ring. One end of the installation plate is connected to the outer wall of the storage cylinder through an elastic element. A connecting rod is fixedly installed on the outer wall of the installation plate. The other end of the connecting rod extends into the inner cavity of the storage cylinder and is fixedly connected to the outer wall of the control plug. A sector gear is fixedly installed on the axial end of the control wheel, and a transmission gear plate that meshes with the sector gear is fixedly installed on the outer wall of the mounting plate.

[0013] Preferably, a transfer plate is fixedly installed on the inner wall of the storage box, and one end of the elastic strip is fixedly connected to the outer wall of the transfer plate; A transfer plate is fixedly installed on the inner wall of the mounting shell, and a transfer block is fixedly installed on the outer wall of the transfer plate. A control toothed plate is fixedly installed on the outer wall of the mounting plate, and a transmission toothed plate that engages with the control toothed plate is fixedly installed on the bottom of the transmission plate.

[0014] The beneficial effects of the present invention are as follows: 1. In this invention, the expansion section adopts an integrated mirror-polished soft silicone support tube with a hemispherical design and precise support dimensions. Compared with traditional multi-lobed expansion tubes, it reduces mechanical friction stimulation through a smooth surface, avoids tissue damage caused by over-expansion, and improves operational stability. The wiping mechanism and the liquid supply mechanism are linked to clean the outer wall of the support tube with disinfectant in real time. The heating powder in the storage mechanism releases heat, which accelerates the evaporation of disinfectant to eliminate drug irritation and preheats the support tube to near the mother's body temperature, avoiding low-temperature stimulation. This forms a cycle of disinfection, evaporation, and temperature control. The vibration of the elastic strip in the storage mechanism promotes uniform reaction of the heating powder and prolongs the stable heat release time, ensuring temperature control and helping the disinfectant to fully evaporate. The elastic design of the squeezing wheel and the control wheel ensures smooth sliding of the support tube, further reducing mechanical stimulation during operation. Overall, through the synergistic inhibition of mechanical, temperature, and drug-induced stimulation, it effectively reduces maternal stress response and improves the success rate of embryo transfer and operational safety.

[0015] 2. This invention, through the cooperation of transmission and operating mechanisms, can prevent the support tube from accidentally contracting and detaching from the cervix, and also avoid its retraction and contamination of the inner wall, ensuring operational safety. The spiral fit design of the control cylinder and sliding shaft, combined with a one-way bearing, allows for single-handed index finger operation to press and control the feeding of the support tube, which is more flexible than traditional two-handed operation and facilitates simultaneous control of the transplant tube with the other hand, improving operational efficiency. When the control wheel rotates, the sector gear and transmission gear plate are linked, driving the mounting plate to slide. This drives the liquid supply mechanism to automatically deliver disinfectant through the connecting rod, and also drives the mounting ring to rotate through the transmission ball and the second spiral groove, achieving all-round disinfection of the wiping layer and reducing dead corners. At the same time, the sliding of the mounting plate causes the transmission gear plate and control gear plate to vibrate, which drives the elastic strip to turn the heating powder through the transmission structure, ensuring stable temperature control. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the internal structure of the mounting shell in this invention; Figure 3 This is a schematic diagram of the installation of the wiping layer in this invention; Figure 4 This is a schematic diagram of the installation of the control wheel in this invention; Figure 5 This is a schematic diagram of the installation of the sliding shaft in this invention; Figure 6 This is a schematic diagram of the control loop structure in this invention; Figure 7 This is a schematic diagram of the elastic strip in this invention; Figure 8 This is a schematic diagram of the structure of the transfer piece in this invention.

[0018] In the diagram: 1. Mounting shell; 2. Storage box; 3. Control cylinder; 4. Support tube; 5. Guide cylinder; 6. Storage box; 7. Mounting bracket; 8. Extrusion wheel; 9. Control ring; 10. Guide strip; 11. Wiping layer; 12. Storage cylinder; 13. Mounting plate; 14. Second spiral groove; 15. Sector gear; 16. Adapter ring; 17. Steering box; 18. Mounting ring; 19. Connecting rod; 20. Transmission worm gear; 21. Transmission worm; 22. Control wheel; 23. Sliding shaft; 24. First spiral groove; 25. Transmission ball; 26. Transmission gear plate; 27. Transmission gear plate; 28. Control plug; 29. ​​Guide ball; 30. Control gear plate; 31. Elastic strip; 32. Transmission plate; 33. Transmission block; 34. Transmission plate. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] like Figures 1 to 8 As shown, the cervical dilation device for bovine embryo transfer according to the present invention includes a hand-held part, a dilation part, a wiping mechanism, a liquid supply mechanism, and a storage mechanism.

[0021] The handheld part includes a mounting shell 1 and a storage box 2 fixedly installed at the bottom of the mounting shell 1. The inner cavity of the storage box 2 is used to store disinfectant (medical disinfectant alcohol is selected in this embodiment), and a disinfectant replenishment port is provided on its exterior. An exhaust port (not shown in the figure) is provided on the exterior of the mounting shell 1 for the exhaust of gas inside the mounting shell 1.

[0022] The expansion mechanism includes a support tube 4, a control wheel 22, and a compression wheel 8. The outer wall of the mounting shell 1 has a through hole for the support tube 4 to slide. One end of the support tube 4 is provided with a soft silicone layer and is set in a hemispherical shape. When transferring an embryo, the support tube 4 is inserted into the cervix of the cow. The support tube 4 is a hollow tube, and the hollow part inside is used for the passage of the embryo transfer tube. With the support of the support tube 4, the cervix of the cow is expanded, preventing the passage of the transferred embryo from scraping and pressing against the inner wall of the cervix, thus reducing stimulation to the mother.

[0023] The support tube 4 is an integral unit with a mirror-polished outer wall. It supports and dilates the maternal cervix. Compared to the Chinese patent with publication number CN220714094U, which uses a multi-lobed dilation tube to dilate the maternal cervix, the smooth, integral support tube 4 can minimize stimulation to the mother, maintain maternal stability during transplantation, and reduce the difficulty of operation (stimulation of the mother during dilation can lead to maternal movement, thereby increasing the difficulty of transplantation). At the same time, when dilating and supporting the maternal cervix, the support space only needs to be enough for the transplantation tube to pass through. The support tube 4 provides a support ring for the maternal cervix. Compared to a dilation tube with a variable outer diameter, it can reduce stimulation to the mother due to over-dilation during support, thereby reducing mechanical stimulation of the maternal cervix.

[0024] The compression wheel 8 is used to compress the support tube 4 and is elastically set inside the mounting shell 1. The control wheel 22 is rotatably installed inside the mounting shell 1, and its radial outer wall is in contact with the outer wall of the support tube 4. In specific operation, the support tube 4 is first inserted into the mounting shell 1 until the outer wall of the support tube 4 is in contact with the outer wall of the control wheel 22. At this time, one end of the mounting shell 1 is aligned with the vaginal opening of the mother. Then, the control wheel 22 is rotated. When the control wheel 22 rotates, the support tube 4 is slowly slid by friction until the hemispherical end of the support tube 4 extends into the cervix of the mother. When the required depth is reached, the rotation of the control wheel 22 is stopped. At this time, the support tube 4 maintains the state of supporting the cervix of the mother, which prepares for embryo transfer.

[0025] The wiping mechanism includes a mounting ring 18 and a wiping layer 11. In this embodiment, the wiping layer 11 is made of sponge. The mounting ring 18 has a hollow structure and is rotatably mounted on the inner wall of the mounting shell 1. The wiping layer 11 is fixedly mounted on the inner wall of the mounting ring 18. The liquid supply mechanism is used to provide disinfectant to the inner cavity of the mounting ring 18. The disinfectant in the storage box 2 is injected into the inner cavity of the mounting ring 18. The wiping layer 11 is wetted by the disinfectant. When the support tube 4 is inserted into the mounting shell 1, the outer wall of the wiping layer 11 is in contact with the support tube 4. When the support tube 4 slides, the wiping layer 11 wipes the disinfectant on the outer wall of the support tube 4, thereby disinfecting the outer wall of the support tube 4. After the disinfectant evaporates, it is discharged through the holes in the outer wall of the mounting shell 1.

[0026] After sterilization, the support tube 4 is inserted into the mother's cervix, which can effectively reduce the risk of cervical infection, thereby protecting the mother's health and improving the survival rate of embryo transfer.

[0027] The storage mechanism includes a storage box 6 and an elastic strip 31. The storage box 6 is made of breathable material. In this embodiment, the frame of the storage box 6 is made of plastic and wrapped with non-woven fabric. The inside of the storage box 6 is filled with heating powder (in this embodiment, the heating powder is a heating mixture composed of iron powder, activated carbon, vermiculite, salt, and filler). Before use, the heating storage box 6 is filled with heating powder and then inserted into the mounting shell 1. Oxygen in the air is adsorbed by the activated carbon and accumulates on the surface of the iron powder. At the same time, the moisture provided by the humectant dissolves the salt to form an electrolyte solution, which accelerates the oxidation reaction of the iron powder. The heat released in the reaction is retained by the heat insulation layer formed by vermiculite and other components, thereby achieving continuous and stable heat release.

[0028] As the disinfectant evaporates and absorbs heat, the temperature of the outer wall of the support tube 4 decreases. At this time, heat is emitted through the outer wall of the storage box 6, which promotes the evaporation of the disinfectant and prevents the disinfectant from coming into contact with the mother's cervix, thereby preventing the drug from irritating the mother's cervix. At the same time, by heating and disinfecting the support tube 4, the temperature is reduced to prevent the mother's cervix from being stimulated when it is inserted into the mother's cervix.

[0029] The storage box 6 is detachably installed on the inner wall of the mounting shell 1. One end of the elastic strip 31 extends into the interior of the storage box 6. When the heating powder inside the storage box 6 reacts and generates heat, the elastic strip 31 is vibrated by controlling it.

[0030] It can both agitate the powder, break up the sedimentation and stratification of components, and allow the iron powder to come into more uniform contact with oxygen and electrolyte solution, avoiding dead zones in heating. It can also disturb the air between the powder particles, accelerate oxygen replenishment and internal heat diffusion, prevent local overheating or insufficient temperature, and ensure stable heating. At the same time, it can also loosen the powder that may clump during the reaction, maintain its loose structure, ensure continuous oxygen penetration, thereby prolonging the effective heating time and improving the overall reaction uniformity, heat utilization efficiency and heating stability.

[0031] The inner wall of the mounting shell 1 is slidably mounted with a mounting bracket 7 via an elastic element. The side wall of the extrusion wheel 8 is rotatably connected to the mounting bracket 7 via a pin. The elastic element is a spring, with one end of the spring connected to the mounting bracket 7 and the other end connected to the inner wall of the mounting shell 1. The spring force controls the extrusion wheel 8 to have a tendency to fit against the support tube 4 in real time, maintaining the stability of the sliding of the support tube 4.

[0032] A steering box 17 is fixedly installed on the inner wall of the mounting housing 1. A transmission worm gear 20 is rotatably installed on the inner wall of the steering box 17. A roller that fits against the control wheel 22 is provided at the axial end of the transmission worm gear 20. Rotating the transmission worm gear 20 drives the roller to rotate, and the roller drives the control wheel 22 to rotate, thereby controlling the sliding of the support tube 4.

[0033] The inner wall of the steering box 17 is rotatably mounted with a transmission worm 21 that meshes with the transmission worm wheel 20. Rotating the transmission worm 21 drives the transmission worm wheel 20 to rotate.

[0034] In this embodiment, the transmission of the transmission worm gear 20 and the transmission worm 21 is unidirectional. On the one hand, it can prevent accidental contact during operation that could cause the support tube 4 to contract and separate from the mother's cervix. On the other hand, after transplantation, it can prevent the part of the support tube 4 that extends into the mother's body from entering the interior of the mounting shell 1, thereby avoiding the risk of contamination of the inner wall of the support tube 4.

[0035] In a preferred embodiment of the present invention, a guide cylinder 5 is fixedly installed on the outer wall of the mounting shell 1, and a control cylinder 3 is elastically installed on the inner wall of the guide cylinder 5. A spring is provided on the outer wall of the control cylinder 3, and one end of the spring is connected to the inner wall of the guide cylinder 5. After pressing the control cylinder 3, the control cylinder 3 is reset by the elastic force.

[0036] A guide bead 29 is fixedly installed on the inner wall of the control cylinder 3, and a sliding shaft 23 is slidably installed on the inner wall of the control cylinder 3. A first spiral groove 24 is opened on the radial outer wall of the sliding shaft 23 to slide and cooperate with the guide bead 29. When the control cylinder 3 is slidable, the sliding shaft 23 is controlled to rotate through the cooperation of the guide bead 29 and the first spiral groove 24.

[0037] The sliding shaft 23 is connected to the axial end of the transmission worm 21 through a one-way bearing. By setting a guide bearing, when the sliding shaft 23 rotates in the forward direction, it drives the transmission worm 21 to rotate. When the sliding shaft 23 rotates in the reverse direction, the transmission worm 21 remains fixed.

[0038] When the control cylinder 3 is pressed, the sliding shaft 23 rotates in the forward direction. When the spring force causes the control cylinder 3 to reset, the sliding shaft 23 rotates freely. Thus, during use, the operator only needs to press the control cylinder 3 back and forth with the index finger to control the slow advance of the support tube 4. The support tube 4 can be slid by pressing the control cylinder 3 with the index finger, which can realize one-handed operation, so that the operator's other hand can perform other operations (such as controlling the advance of the tube for embryo transfer).

[0039] A control ring 9 is slidably mounted on the outer wall of the mounting ring 18, and a guide bar 10 that is slidably connected to the control ring 9 is fixedly mounted on the inner wall of the mounting shell 1. The sliding trajectory of the control ring 9 is limited by setting the guide bar 10.

[0040] The inner wall of the control ring 9 is fixed with a transmission ball 25, and the radial outer wall of the mounting ring 18 is provided with a second spiral groove 14. The outer wall of the transmission ball 25 is slidably attached to the second spiral groove 14. The sliding control ring 9, through the cooperation of the transmission ball 25 and the second spiral groove 14, thereby adjusts the mounting ring 18 to rotate. By rotating the mounting ring 18, the wiping layer 11 is controlled to wipe different positions of the support tube 4, reducing the risk of disinfection dead corners.

[0041] In a preferred embodiment of the present invention, the liquid supply mechanism includes a storage cylinder 12, a control plug 28, and a transition ring 16. The transition ring 16 is connected to the mounting ring 18 via a sealed bearing, thereby maintaining a sealed connection with the transition ring 16 when the mounting ring 18 rotates.

[0042] The storage cylinder 12 is fixedly installed on the inner wall of the mounting shell 1, and the outer wall of the control plug 28 slides against the inner wall of the storage cylinder 12, wherein the outer wall of the control plug 28 is sealed against the inner wall of the storage cylinder 12.

[0043] The outer wall of the storage cylinder 12 is provided with a one-way liquid inlet pipe and a liquid outlet pipe. Both the liquid inlet pipe and the liquid outlet pipe are equipped with one-way valves, and the conduction directions are opposite.

[0044] The storage cylinder 12 is connected to the adapter ring 16 through the drain pipe, and the storage cylinder 12 is connected to the inner cavity of the storage box 2 through the inlet pipe. The reciprocating sliding control plug 28 controls the storage cylinder 12 to draw out the disinfectant inside the storage box 2 and then discharge it into the inner cavity of the mounting ring 18 to wet the wiping layer 11.

[0045] An installation plate 13 is fixedly installed on the outer wall of the control ring 9. One end of the installation plate 13 is connected to the outer wall of the storage cylinder 12 through an elastic element, so as to realize the elastic connection between the installation plate 13 and the storage cylinder 12. The sliding installation plate 13 drives the control ring 9 to slide.

[0046] A connecting rod 19 is fixedly installed on the outer wall of the mounting plate 13. The other end of the connecting rod 19 extends into the inner cavity of the storage cylinder 12 and is fixedly connected to the outer wall of the control plug 28. When the mounting plate 13 slides, the connecting rod 19 drives the control plug 28 to slide, thereby realizing the delivery of disinfectant and controlling the rotation of the mounting ring 18.

[0047] A sector gear 15 is fixedly installed on the axial end of the control wheel 22, and a transmission gear plate 26 that meshes with the sector gear 15 is fixedly installed on the outer wall of the mounting plate 13. In the initial state, the sector gear 15 meshes with the transmission gear plate 26.

[0048] When the control wheel 22 rotates, it drives the sector gear 15 to rotate. At this time, the mounting plate 13 is driven to slide through the transmission gear plate 26. As the sector gear 15 rotates until it separates from the transmission gear plate 26, the elastic force controls the mounting plate 13 to reset. Thus, when the control wheel 22 rotates, the supply of disinfectant is realized while controlling the rotation of the mounting ring 18.

[0049] A transmission plate 34 is fixedly installed on the inner wall of the storage box 6. One end of the elastic strip 31 is fixedly connected to the outer wall of the transmission plate 34. The transmission plate 34 is made of elastic material, and the vibration of the transmission plate 34 is controlled to transmit the vibration to the elastic strip 31.

[0050] A transfer plate 32 is fixedly installed on the inner wall of the mounting shell 1, and a transfer block 33 is fixedly installed on the outer wall of the transfer plate 32. After the storage box 6 is inserted into the mounting shell 1, the transfer plate 32 extends into the storage box 6, and at this time the transfer block 33 is in contact with the transfer plate 34.

[0051] A control toothed plate 30 is fixedly installed on the outer wall of the mounting plate 13, and a transmission toothed plate 27 that engages with the control toothed plate 30 is fixedly installed on the bottom of the transmission plate 32. When the mounting plate 13 slides back and forth, the transmission toothed plate 27 and the control toothed plate 30 reciprocate to misalign and fit together, thereby generating vibration, so as to transmit the vibration to the elastic strip 31, so as to stabilize the heating powder heating.

[0052] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0053] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cervical dilation device for bovine embryo transfer, characterized in that: It includes a handheld part, an expansion part, a wiping mechanism, a liquid supply mechanism, and a storage mechanism; The handheld part includes a mounting shell (1) and a storage box (2) fixedly mounted on the bottom of the mounting shell (1); The expansion mechanism includes a support tube (4), a control wheel (22), and a compression wheel (8). The outer wall of the mounting shell (1) is provided with a through hole for the support tube (4) to slide. The compression wheel (8) is used to compress the support tube (4) and is elastically set inside the mounting shell (1). The control wheel (22) is rotatably installed inside the mounting shell (1), and its radial outer wall is in contact with the outer wall of the support tube (4). The wiping mechanism includes a mounting ring (18) and a wiping layer (11). The mounting ring (18) is a hollow structure and is rotatably mounted on the inner wall of the mounting shell (1). The wiping layer (11) is fixedly mounted on the inner wall of the mounting ring (18). The liquid supply mechanism is used to provide disinfectant to the inner cavity of the mounting ring (18); The storage mechanism includes a storage box (6) and an elastic strip (31). The storage box (6) is detachably mounted on the inner wall of the mounting shell (1), and one end of the elastic strip (31) extends into the interior of the storage box (6).

2. The cervical dilation device for bovine embryo transfer according to claim 1, characterized in that: The inner wall of the mounting shell (1) is slidably mounted with a mounting bracket (7) via an elastic element, and the side wall of the extrusion wheel (8) is rotatably connected to the mounting bracket (7) via a pin. The inner wall of the mounting housing (1) is fixedly installed with a steering box (17), and the inner wall of the steering box (17) is rotatably installed with a transmission worm gear (20). The axial end of the transmission worm gear (20) is provided with a roller that fits against the control wheel (22). The inner wall of the steering box (17) is rotatably mounted with a transmission worm (21) that meshes with the transmission worm wheel (20).

3. A cervical dilation device for bovine embryo transfer according to claim 2, characterized in that: The outer wall of the mounting shell (1) is fixedly installed with a guide cylinder (5), and the inner wall of the guide cylinder (5) is elastically installed with a control cylinder (3). The inner wall of the control cylinder (3) is fixedly installed with a guide bead (29), and the inner wall of the control cylinder (3) is slidably installed with a sliding shaft (23). The radial outer wall of the sliding shaft (23) is provided with a first spiral groove (24) that slides with the guide bead (29). The sliding shaft (23) is connected to the axial end of the transmission worm (21) via a one-way bearing.

4. A cervical dilation device for bovine embryo transfer according to claim 3, characterized in that: A control ring (9) is slidably mounted on the outer wall of the mounting ring (18), and a guide strip (10) that is slidably connected to the control ring (9) is fixedly mounted on the inner wall of the mounting shell (1). A transmission ball (25) is fixed on the inner wall of the control ring (9), and a second spiral groove (14) is opened on the radial outer wall of the mounting ring (18). The outer wall of the transmission ball (25) is slidably fitted with the second spiral groove (14).

5. A cervical dilation device for bovine embryo transfer according to claim 4, characterized in that: The liquid supply mechanism includes a storage cylinder (12), a control plug (28), and a transition ring (16). The transition ring (16) is connected to the mounting ring (18) via a sealed bearing. The storage cylinder (12) is fixedly installed on the inner wall of the mounting shell (1). The outer wall of the control plug (28) slides against the inner wall of the storage cylinder (12). The outer wall of the storage cylinder (12) is provided with a unidirectional liquid inlet pipe and a liquid outlet pipe. The storage cylinder (12) is connected to the adapter ring (16) through the liquid outlet pipe. The storage cylinder (12) is connected to the inner cavity of the storage box (2) through the liquid inlet pipe.

6. A cervical dilation device for bovine embryo transfer according to claim 5, characterized in that: An installation plate (13) is fixedly installed on the outer wall of the control ring (9). One end of the installation plate (13) is connected to the outer wall of the storage cylinder (12) through an elastic element. A connecting rod (19) is fixedly installed on the outer wall of the installation plate (13). The other end of the connecting rod (19) extends into the inner cavity of the storage cylinder (12) and is fixedly connected to the outer wall of the control plug (28). A sector gear (15) is fixedly installed on the axial end of the control wheel (22), and a transmission gear plate (26) that meshes with the sector gear (15) is fixedly installed on the outer wall of the mounting plate (13).

7. A cervical dilation device for bovine embryo transfer according to claim 6, characterized in that: A transfer plate (34) is fixedly installed on the inner wall of the storage box (6), and one end of the elastic strip (31) is fixedly connected to the outer wall of the transfer plate (34). A transfer plate (32) is fixedly installed on the inner wall of the mounting shell (1), and a transfer block (33) is fixedly installed on the outer wall of the transfer plate (32). The outer wall of the mounting plate (13) is fixedly mounted with a control tooth plate (30), and the bottom of the transmission plate (32) is fixedly mounted with a transmission tooth plate (27) that engages with the control tooth plate (30).

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