A device for precise drug delivery and artificial insemination of multiple parts of the uterus and ovary for cows

Abstract

The present invention relates to the field of livestock epidemic prevention, and specifically to a device for precise drug delivery and artificial insemination of multiple parts of the uterus and ovaries for cows, comprising: an outer catheter, a guide wire sleeve, a guide wire, a power transmission structure, a medicine supply structure, a medicine tube, a spiral extrusion structure, and a self-priming air blowing head. The device for precise drug delivery and artificial insemination of multiple parts of the uterus and ovaries for cows of the present invention adopts a guide wire with a memory bending characteristic to extend to the top tip position of the cow's fallopian tube according to the structural characteristics of the cow's fallopian tube bending in a symmetrical arc on both sides of the uterus to the lower and rear sides. The outer catheter is designed with a blowing cavity structure, and the blowing cavity structure blows the medicine and semen to a farther area inside the uterus by quickly ejecting gas at the front end port, thereby increasing the treatment range and the probability of conception. It is simple to operate, convenient and practical.

Description

Technical Field

[0001] The invention relates to the field of livestock epidemic prevention, and in particular to a uterus and ovary multi-site precise drug delivery and artificial insemination device dedicated to cows. Background Art

[0002] Endometritis in dairy cows is a common and frequently occurring disease in the dairy farming industry, mostly concentrated within 2 weeks after delivery, with a general incidence rate of 20% to 35%. Endometritis in dairy cows is usually a mucous or purulent inflammation of the uterine mucosa. Since the toxic substances produced by the inflammation can kill sperm and embryos and cause infertility in dairy cows, endometritis in dairy cows has become one of the common causes of infertility in dairy cows, and endometritis in dairy cows usually causes various complications such as ovarian cysts. In my country, endometritis-type infertility in dairy cows accounts for more than 17% of infertility in adult cows. Endometritis in dairy cows can not only affect the estrus and pregnancy of dairy cows, reduce the milk production of dairy cows, and induce diseases such as mastitis, but also cause the loss of reproductive ability of dairy cows in severe cases. Some acutely ill cows even die from sepsis caused by endometritis in dairy cows. Therefore, endometritis in dairy cows is a serious hazard to the dairy industry and may cause great economic losses. Endometritis in dairy cows has become a disease that is generally valued and urgently needs to be solved in veterinary clinics.

[0003] Traditional treatment methods involve injecting drugs, such as injections or powder injections, deep into the cow's vagina for drug treatment, which has a certain therapeutic effect, but has the following defects:

[0004] 1. Traditional treatment methods cannot directly reach the patient's site in the cow, cannot directly act on the lesion, and the drug infusion range is small, which cannot effectively and comprehensively cover the lesion area. There is a high probability that some lesion areas will have no drug. In this case, it is necessary to repeatedly administer the drug to the cow's uterus, which has low treatment efficiency and cumbersome operation.

[0005] 2. Traditional uterine treatment cannot simultaneously deliver drugs directly to treat complications that occur in the ovaries. In subsequent treatments, separate treatments are required, which prolongs the treatment cycle. In addition, the local tissue drug concentration cannot be increased during treatment, and the drug often refluxes and is lost. A large amount of drug solution cannot be accumulated at the lesion site, affecting the treatment effect.

[0006] 3. When the traditional uterine drug delivery device is inserted into the cow's vagina, the catheter has no limiting and relatively fixed structure relative to the vagina, which causes the catheter or syringe to be inserted too deeply during drug delivery, causing discomfort to the livestock, and possible slippage, resulting in failure of the treatment operation.

[0007] 4. When traditional uterine drug delivery devices are used to infuse powdered therapeutic drugs, the powdered drugs may accumulate in the infusion tube due to poor fluidity, causing blockage. Therefore, the delivery of powdered drugs has always been an extremely difficult problem in drug delivery operations, and currently existing conventional methods have not been able to achieve ideal results.

[0008] 5. Although the existing applicator can be used as an insemination tool for artificial insemination, it cannot mix the internal semen concentration evenly, resulting in some semen being too concentrated and the local sperm concentration being too high, resulting in the sperm concentration in most other semen failing to reach the minimum concentration index, thereby greatly reducing the probability of cow pregnancy. Summary of the invention

[0009] In order to solve the above problems, the object of the present invention is to provide a uterus and ovary multi-site precise drug delivery and artificial insemination device for cows with high drug delivery accuracy and high cow pregnancy probability.

[0010] The objective of the present invention is achieved through the following technical solutions:

[0011] The invention provides a cow-specific uterine and ovarian multi-site precise drug delivery and artificial insemination device, comprising: an external catheter, a guide wire sleeve, a guide wire, a power transmission structure, a medicine supply structure, a medicine tube, a spiral extrusion structure, and a self-priming air blowing head;

[0012] The outer catheter is provided with a drug delivery cavity, a first guide wire sleeve cavity, a second guide wire sleeve cavity, and an air blowing cavity. A powdered drug or bull semen is arranged in the drug supply structure. The drug supply structure is arranged on the outer catheter and communicates with the drug delivery cavity to supply the drug to the drug delivery cavity. The power transmission structure is arranged in the drug delivery cavity to evenly stir the supplied drug and then push it.

[0013] A guide wire sleeve is sleeved in the first guide wire sleeve lumen and the second guide wire sleeve lumen, a guide wire is sleeved in the guide wire sleeve, a gap is set between the guide wire sleeve and the guide wire, one end of the gap between the guide wire sleeve and the guide wire is connected to a medicine tube, a fluid medicine is set in the medicine tube, the medicine tube is set on the spiral extrusion structure, and the spiral extrusion structure squeezes the medicine tube to transport the fluid medicine to the other end of the gap between the guide wire sleeve and the guide wire; the two guide wires have a memory bending characteristic, and the left and right fallopian tubes with symmetrical horn-shaped bends in the body structure of the cow maintain a consistent bend inside them;

[0014] One end of the blowing cavity is connected to the self-priming blowing head, and the other end is used to jet and disperse the fluid medicine and powder medicine or bull semen transported from the external catheter; the self-priming blowing head only blows air without extracting air.

[0015] Furthermore, the power transmission structure includes: a first motor, a rotating shaft, a fixed frame, a spiral conveying sheet, and a double spiral sheet; the first motor is arranged on the outer catheter, the rotating shaft is fixed in the drug delivery cavity by the fixed frame and is connected to the power of the first motor, the spiral conveying sheet and the double spiral sheet are arranged on the rotating shaft, and the powdered medicine or bull semen is supplied to the spiral conveying sheet for transportation and is evenly stirred by the double spiral sheet.

[0016] Furthermore, the double helical plates are composed of several groups of first helical plates and second helical plates which are alternately connected and evenly distributed along the axial direction of the rotating shaft. Both the first helical plates and the second helical plates are double-sided helical structures, and both the first helical plates and the second helical plates only intercept half the length of the helical pitch. The rotation directions of the first helical plates and the second helical plates are at a vertical angle.

[0017] Furthermore, the medicine supply structure includes: a funnel, a medicine bottle; a medicine inlet groove is opened on the outer catheter; the lower part of the medicine inlet groove is connected to the drug delivery cavity, and the upper part is connected to the funnel, and a medicine bottle is arranged on the funnel, and powdered medicine or bull semen is arranged in the medicine bottle.

[0018] Furthermore, a compliant balloon is arranged on the end of the guide wire sleeve, and an inflation channel is opened on the guide wire sleeve; one end of the inflation channel is connected to the balloon, and the other end is connected to a one-way inflation joint; after the balloon is inflated, it expands and fixes the guide wire sleeve.

[0019] Furthermore, the spiral extrusion structure includes: a base plate, a rotating shaft, a spiral center block, a spiral hinged flap, a roller shaft, and a rotating power component; the rotating power component is arranged on one side of the base plate, the rotating shaft is arranged on the other side of the base plate and is dynamically connected to the rotating power component, the spiral center block is sleeved on the rotating shaft, a number of spiral hinged flaps are hinged on the spiral center block in sequence, the roller shaft is hinged on the base plate, and the medicine tube is arranged between the number of spiral hinged flaps and the roller shaft to be squeezed to transport the fluid medicine.

[0020] Furthermore, the rotating power part includes: a second motor, a worm, and a worm wheel; the second motor, the worm, the worm wheel, and the rotating shaft are driven in sequence.

[0021] Furthermore, three joints are provided on the self-priming blowing head. The first joint is connected to one end of the blowing cavity. A first one-way valve assembly is provided at the first joint, and the first one-way valve assembly can only allow gas to pass from the inside to the outside; a second one-way valve assembly is provided at the second joint, and the second one-way valve assembly can only allow gas to pass from the outside to the inside; the third joint is connected to a blowing pressure ball.

[0022] Furthermore, the outer catheter is provided with an air blowing half-chamber and a medicine liquid half-chamber, both of which are two semicircular cavities, which are separated by an L-shaped partition, and the bending section of the L-shaped partition is sealed at the port of the medicine liquid half-chamber. A medicine through hole is provided on the outer catheter, and an annular spray balloon is arranged on the outer catheter at the medicine through hole, and a plurality of small holes are evenly arranged on the surface circumference of the annular spray balloon.

[0023] Furthermore, an annular shifting balloon is arranged on the outer catheter, and an airway is opened on the outer catheter; one end of the airway is connected to the shifting balloon, and the other end is connected to a one-way inflation joint; a limit plate is arranged on the outer catheter, and a handle is connected to the limit plate.

[0024] The uterine and ovarian multi-site precise drug delivery and artificial insemination device for cows of the present invention adopts a guide wire with a memory bending characteristic to extend to the top tip of the cow's fallopian tube according to the structural characteristics of the cow's fallopian tube bending in a symmetrical arc at the rear and lower sides of the uterus on both sides. The outer catheter is designed with an air blowing cavity structure, which blows the medicine and semen to a farther area inside the uterus by quickly ejecting gas at the front end port, thereby increasing the treatment range and the probability of pregnancy. The operation is simple, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 It is a structural diagram of a cow-specific uterus and ovary multi-position precise drug delivery and artificial insemination device from one angle;

[0027] Figure 2 It is a structural diagram from another angle of the uterus and ovary multi-position precise drug delivery and artificial insemination device for cows of the present invention;

[0028] Figure 3 It is a cross-sectional view of a cow-specific uterus and ovary multi-position precise drug delivery and artificial insemination device according to the present invention at one angle;

[0029] Figure 4 It is a cross-sectional view from another angle of the uterus and ovary multi-position precise drug delivery and artificial insemination device for cows of the present invention;

[0030] Figure 5 It is a partial structural diagram of the uterus and ovary multi-position precise drug delivery and artificial insemination device for cows of the present invention;

[0031] Figure 6 yes Figure 5 sectional view of

[0032] Figure 7 yes Figure 6 The local structure diagram of

[0033] Figure 8 It is a structural diagram of the power transmission structure in the uterus and ovary multi-site precise drug delivery and artificial insemination device for cows of the present invention;

[0034] Fig. 9 yes Figure 8 The local structure diagram of

[0035] Fig.10 It is a structural diagram of the annular drug spraying balloon in the uterus and ovary multi-position precise drug delivery and artificial insemination device for cows of the present invention;

[0036] Fig.11 It is a structural diagram of the use of a spiral extrusion structure in one state of the uterus and ovary multi-site precise drug delivery and artificial insemination device for cows of the present invention;

[0037] Fig.12 It is a structural diagram of another state of use of the spiral extrusion structure in the uterus and ovary multi-site precise drug delivery and artificial insemination device for cows of the present invention;

[0038] Fig.13 It is a structural diagram of a spiral extrusion structure at one angle in the uterus and ovary multi-position precise drug delivery and artificial insemination device for cows of the present invention;

[0039] Fig.14 It is a structural diagram of another angle of the spiral extrusion structure in the uterus and ovary multi-position precise drug delivery and artificial insemination device for cows of the present invention;

[0040] Fig.15 It is a structural diagram of a self-priming air blowing head in a device for precise drug delivery and artificial insemination of multiple parts of the uterus and ovary for cows of the present invention;

[0041] Fig.16 It is a cutaway view of the self-priming air blowing head in the uterus and ovary multi-position precise drug delivery and artificial insemination device for cows of the present invention;

[0042] The accompanying drawings are marked as follows: 1, outer catheter; 2, guide wire sleeve; 3, guide wire; 4, medicine tube; 5, self-priming air blowing head; 6, medicine delivery cavity; 7, first guide wire sleeve cavity; 8, second guide wire sleeve cavity; 9, air blowing cavity; 10, first motor; 11, rotating shaft; 12, fixed frame; 13, spiral conveying sheet; 14, double spiral sheet; 15, funnel; 16, medicine bottle; 17, medicine feeding slot; 18, balloon; 19, bottom plate; 20, rotating shaft; 21. Spiral center block; 22. Spiral hinge flap; 23. Roller shaft; 24. Second motor; 25. Worm; 26. Worm wheel; 27. Inflatable pressure ball; 28. First one-way valve plate; 29. ​​Second one-way valve plate; 30. Expansion fixing sleeve; 31. Inflatable half chamber; 32. Liquid medicine half chamber; 33. Partition; 34. Drug through hole; 35. Annular spray balloon; 36. Shift balloon; 37. Limiting plate; 38. Handle; 39. Fallopian tube; 40. Cow vagina; 41. One-way inflation joint. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0044] like Figures 1 to 16 As shown, a device for precise drug delivery and artificial insemination of multiple parts of the uterus and ovaries of a cow according to an embodiment of the present invention comprises: an outer catheter 1, a guide wire sleeve 2, a guide wire 3, a power transmission structure, a drug supply structure, a drug tube 4, a spiral extrusion structure, and a self-priming air blowing head 5;

[0045] The outer catheter 1 is provided with a drug delivery cavity 6, a first guide wire sleeve cavity 7, a second guide wire sleeve cavity 8, and an air blowing cavity 9. A powdered drug or bull semen is arranged in the drug supply structure. The drug supply structure is arranged on the outer catheter 1 and communicates with the drug delivery cavity 6 to supply the drug to the drug delivery cavity 6. The power transmission structure is arranged in the drug delivery cavity 6 to evenly stir the supplied drug and then push it.

[0046] A guide wire sleeve 2 is sleeved in the first guide wire sleeve lumen 7 and the second guide wire sleeve lumen 8, a guide wire 3 is sleeved in the guide wire sleeve 2, a gap is set between the guide wire sleeve 2 and the guide wire 3, one end of the gap between the guide wire sleeve 2 and the guide wire 3 is connected with a medicine tube 4, a fluid medicine is set in the medicine tube 4, and the medicine tube 4 is set on a spiral extrusion structure, and the spiral extrusion structure squeezes the medicine tube 4 to transport the fluid medicine to the other end of the gap between the guide wire sleeve 2 and the guide wire 3; the two guide wires 3 have a memory bending characteristic, and the left and right fallopian tubes 39 with symmetrical horn-shaped bends in the body structure of the cow maintain a consistent bend inside them;

[0047] One end of the blowing cavity 9 is connected to the self-priming blowing head 5, and the other end thereof is used to jet and disperse the fluid medicine and powder medicine or bull semen conveyed from the outer catheter 1; the self-priming blowing head 5 only blows air without producing air suction.

[0048] The uterus and ovary multi-site precise drug delivery and artificial insemination device for cows of the present invention adopts a guide wire 3 with a memory bending characteristic to extend to the top tip of the cow's fallopian tube 39 according to the structural characteristics of the cow's fallopian tube 39 bending in a symmetrical arc at the rear and lower sides of the uterus on both sides. The outer catheter 1 is designed with a blowing cavity 9 structure, which blows the medicine and semen to a farther area inside the uterus by quickly ejecting gas at the front end port, thereby increasing the treatment range and the probability of pregnancy. The operation is simple, convenient and practical.

[0049] Preferably, the power transmission structure includes: a first motor 10, a rotating shaft 11, a fixed frame 12, a spiral conveying piece 13, and a double spiral piece 14; the first motor 10 is arranged on the outer catheter 1, the rotating shaft 11 is fixed in the drug delivery cavity 6 by the fixed frame 12 and is connected to the power of the first motor 10, the spiral conveying piece 13 and the double spiral piece 14 are arranged on the rotating shaft 11, and the powdered medicine or bull semen is supplied to the spiral conveying piece 13 for transportation and is evenly stirred by the double spiral piece 14.

[0050] The drug delivery cavity 6 has a larger cross-section and is responsible for delivering powdered drugs and semen during artificial insemination. Because the powdered drugs are solids and have poor fluidity, they cannot be delivered from the rear end of the outer catheter 1 to the front end of the drug delivery cavity 6 by their own flow. Therefore, a spiral powdered drug delivery structure is provided inside the drug delivery cavity 6, and a rotating shaft 11 is provided at the central axis position of the drug delivery cavity 6. The rotating shaft 11 is sleeved inside the drug delivery cavity 6 through an X-shaped fixing frame 12, so that the rotating shaft 11 can only rotate on its own. The X-shaped fixing frame 12 is fixed inside the drug delivery cavity 6, and its overall shape is four X-shaped forked legs, and the area between adjacent forked legs is a hollow structure, so that the powdered drugs can be delivered through the X-shaped fixing frame 12. A spiral conveying piece 13 is fixed on the rotating shaft 11 from the rear end to the front end inside the medicine delivery cavity 6. The spiral conveying piece 13 is in the shape of a spiral blade and is spirally fixed to the outer periphery of the rotating shaft 11. The outer periphery of the spiral blade is slightly smaller than the inner diameter of the medicine delivery cavity 6. When the spiral blade of the spiral conveying piece 13 rotates, the powdered medicine inside the medicine delivery cavity 6 can be driven to be transported axially forward from the rear end. A double spiral piece 14 is fixed on the rotating shaft 11 in the front area of ​​the medicine delivery cavity 6. The double spiral piece 14 is located in the axial front position of the spiral conveying piece 13.

[0051] The rear end of the rotating shaft 11 extends out of the rear end of the outer conduit 1, and the rear end of the rotating shaft 11 is coaxially fixedly connected to the first motor 10, and the first motor 10 is fixed to the rear end surface of the outer conduit 1 through a motor fixing seat, and the motor fixing seat is arranged on the outer conduit 1. When the first motor 10 is turned on, it can drive the rotating shaft 11 to rotate, and drive the spiral conveying sheet 13 and the double spiral sheet 14 to rotate synchronously.

[0052] Preferably, the double helical sheets 14 are a plurality of groups of first helical sheets and second helical sheets that are alternately connected and evenly distributed along the axial direction of the rotating shaft 11, the first helical sheets and the second helical sheets are both double-sided helical structures, and the first helical sheets and the second helical sheets only intercept half the length of the helical pitch, and the rotation directions of the first helical sheets and the second helical sheets are at a vertical angle.

[0053] Double spiral sheet 14 is mainly the first spiral sheet of several groups and the second spiral sheet connected alternately and evenly distributed along the axial direction. The first spiral sheet and the second spiral sheet are both bilateral spiral structures, and the first spiral sheet and the second spiral sheet only intercept the length of half a spiral pitch, the first spiral sheet and the second spiral sheet are fixed in a vertical angle in the direction of rotation, so that when medicament or semen arrive at double spiral sheet 14 after being transmitted by spiral conveying sheet 13 inside medicine delivery cavity 6, the rotation of rotating shaft 11 also drives the first spiral sheet and the second spiral sheet of double spiral sheet 14 to rotate synchronously, the direction of rotation perpendicular to each other of the first spiral sheet and the second spiral sheet can make powdered medicament or semen be stirred and mixed in this section area, and can be more uniform than being rotated and stirred and mixed by a single hyperbolic spiral sheet. By stirring and mixing, it is possible to avoid the situation that medicament is mixed unevenly or semen appears to be thin and thick uneven, for powdered medicament, various even mixing of dispensing can be made, after being sprayed to the inner wall of cow's uterus, each region can be in various types of powdered medicaments of uniform proportion all the time to the greatest extent, and the therapeutic effect is guaranteed to the greatest extent. As for semen, the content ratio of sperm in semen is made close to balance, which increases the success rate of artificial insemination of cows.

[0054] Preferably, the drug supply structure includes: a funnel 15 and a drug bottle 16; a drug inlet groove 17 is opened on the outer catheter 1; the lower part of the drug inlet groove 17 is connected to the drug delivery cavity 6, and the upper part is connected to the funnel 15, and a drug bottle 16 is arranged on the funnel 15, and powdered medicine or bull semen is arranged in the drug bottle 16.

[0055] A drug inlet groove 17 with a certain length along the axial direction is opened on the outer catheter 1 at the rear section of the drug delivery cavity 6. The drug inlet groove 17 is opened from the outside of the outer catheter 1 to the inside of the drug delivery cavity 6. When the outer catheter 1 is inserted into the cow's vagina 40, the drug inlet groove 17 is ensured to be directly above the drug delivery cavity 6. A funnel 15 is fixed upward on the outer periphery of the drug inlet groove 17. The funnel 15 is wide at the top and narrow at the bottom, so that the powdered medicine or semen inside the funnel 15 can enter the drug delivery cavity 6 inside the outer catheter 1 through the drug inlet groove 17. A threaded step hole is provided above the funnel 15, and a medicine bottle 16 is screwed and fixed through the threaded step hole. Powdered medicine or bull semen can be placed inside the medicine bottle 16.

[0056] Preferably, a compliant balloon 18 is provided on the end of the guide wire sleeve 2, and an inflation channel is opened on the guide wire sleeve 2; one end of the inflation channel is connected to the balloon 18, and the other end is connected to a one-way inflation connector 41; after the balloon 18 is inflated, it expands and fixes the guide wire sleeve 2.

[0057] The outer catheter 1 is provided with a first guide wire sleeve lumen 7 and a second guide wire sleeve lumen 8 at upper and lower positions. A guide wire sleeve 2 is passed through each of the two guide wire sleeve lumens. A guide wire 3 is sleeved inside the guide wire sleeve 2. The guide wire 3 can be guided to pull the guide wire sleeve 2 forward. The guide wire 3 of the device has a memory bending characteristic, and can keep the same bending inside the two symmetrical horn-shaped fallopian tubes 39 of the cow's body structure, so as to achieve the effect of pulling the guide wire sleeve 2 to the deep part of the fallopian tube 39 at the tip of the fallopian tube 39. The two guide wire sleeves 2 are respectively provided with balloons 18 on the outer wall near the front end. The balloons 18 are compliant balloons 18. The balloons 18 correspond to the inflation channel of the wall of the guide wire sleeve 2 and extend to the rear end of the guide wire sleeve 2. A one-way inflation joint 41 is connected. The corresponding balloons 18 can be inflated through the one-way inflation joint 41 to fill the deep position of the fallopian tube 39 and tighten and fix, so that the guide wire sleeve 2 is fixed by the balloon 18, and the fallopian tube 39 is blocked and sealed. There is a large gap between the inner wall of the guide wire sleeve 2 and the guide wire 3, and a fluid agent can be introduced into the gap to make the agent be injected from the front end of the guide wire sleeve 2, so as to carry out precise drug treatment for the ovarian disease of the cow. According to the body structure of the cow, the tips of the two fallopian tubes 39 are connected to the ovaries, and the guide wire sleeve 2 is delivered to the deepest area of ​​the fallopian tube 39 to spray the fluid agent, so that the agent can directly enter the ovaries to achieve the therapeutic effect, and the balloon 18 has a sealing effect, so that the agent will not flow back from the fallopian tube 39.

[0058] Preferably, the spiral extrusion structure includes: a base plate 19, a rotating shaft 20, a spiral center block 21, a spiral hinged flap 22, a roller shaft 23, and a rotating power component; the rotating power component is arranged on one side of the base plate 19, the rotating shaft 20 is arranged on the other side of the base plate 19 and is dynamically connected to the rotating power component, the spiral center block 21 is sleeved on the rotating shaft 20, and a plurality of spiral hinged flaps 22 are hinged on the spiral center block 21 in sequence, the roller shaft 23 is hinged on the base plate 19, and the medicine tube 4 is arranged between the plurality of spiral hinged flaps 22 and the roller shaft 23 to be squeezed and transported fluid medicine.

[0059] The outer catheter 1 is extended from the rear end of the guide wire sleeve 2, and a one-way inflation joint 41 is arranged on the extension section of the guide wire sleeve 2, and a connecting tube is fixedly connected to the tail end of the guide wire sleeve 2, and the connecting tube is connected to the two guide wire sleeves 2 at the same time, and the medicine is injected into the ovarian openings at the tip positions of the two symmetrical fallopian tubes 39 on the left and right through the two guide wire sleeves 2 synchronously, so that the medicine transported inside the two guide wire sleeves 2 is exactly the same, and the openings on both sides of the ovaries are injected for treatment synchronously. A medicine tube 4 is connected to the rear end of the connecting tube, and a fluid medicine is perfused in the internal cavity of the medicine tube 4, and the medicine tube 4 has a deformation characteristic, and when the medicine tube 4 is squeezed, the fluid medicine inside the medicine tube 4 can be infused to the outside from the opening under pressure. The spiral extrusion structure cooperates with the extrusion of the medicine tube 4. The spiral extrusion structure is fixedly connected to a spiral center block 21 above the bottom plate 19 through a rotating shaft 20. The spiral center block 21 has a certain height, and the overall shape of the spiral center block 21 is similar to the shape of a "comma" symbol. The spiral center block 21 as a whole is the initial part that spirally winds from the center of the spiral to the outside. A spiral hinged flap 22 is hinged at the tail of the spiral center block 21. The spiral hinged flap 22 is one of the spiral segment structures of the spiral extrusion structure. The next spiral hinged flap 22 is hinged at the rear of each spiral hinged flap 22, and the spiral hinged flaps 22 are hinged front and back in sequence (this technical solution adopts six groups of spiral hinged flaps 22).

[0060] The above structure can make the spiral hinged flap 22 have two states, one is a non-open spiral winding state, in which there is a certain gap between the adjacent inner and outer circles in the spiral winding state, and the other is a non-spiral chain state in which the front and rear spiral hinged flaps 22 are mutually opened. The hinge axis of the spiral hinged flap 22 needs to be close to the outside. This design can prevent interference between the edge positions of the rear set of spiral hinged flaps 22 when they rotate and open relative to the front set. The hinged contact surface of the front and rear spiral hinged flaps 22 is an inclined surface inclined from the inner wall to the outside. This design can make the spiral hinged flap 22 in the spiral winding state be able to press the previous spiral hinged flap 22 to the maximum extent through the contact inclined surface, thereby ensuring the stability of the structure. A roller shaft 23 is hinged on one side of the bottom plate 19. The roller shaft 23 can rotate flexibly, and the distance between the roller shaft 23 and the spiral center axis is greater than the outer circumference of the spiral hinged flap 22 after it is fully spirally wound, so that the roller shaft 23 will not interfere with the spiral hinged flap 22 from winding from a non-spiral chain state to a spiral state.

[0061] Preferably, the rotating power part includes: a second motor 24, a worm 25, and a worm wheel 26; the second motor 24, the worm 25, the worm wheel 26, and the rotating shaft 20 are driven in sequence.

[0062] The hinge axis of the spiral center block 21 extends to the bottom of the bottom plate 19 and is coaxially fixedly connected with a worm wheel 26, and the worm 25 is meshed with a worm 25. The worm 25 is coaxially fixedly connected with a second motor 24, and the second motor 24 is fixedly connected to the lower end surface of the bottom plate 19. The worm wheel 26 and worm 25 mechanism has a large reduction ratio, and the second motor 24 is transmitted to the slower speed on the rotating shaft 20 through the reduction ratio at a faster speed. At the same time, the use of the worm wheel 26 and worm 25 can increase the torque of the rotating shaft 20 to the greatest extent. It is ensured that the medicine can always be extruded smoothly and slowly when the spiral extrusion structure extrudes the medicine tube 4. At the same time, the worm wheel 26 and worm 25 structure has an instant self-locking effect. When the second motor 24 stops rotating, the spiral extrusion structure can always be in a non-rotating state without slipping.

[0063] When the medicine tube 4 is squeezed, the tail of the medicine tube 4 is clamped into the spiral groove of the spiral center block 21. The medicine tube 4 is relatively thick in the initial state, and the roller shaft 23 has a certain gearing effect on the medicine tube 4. After the clamping and fixing is completed, the second motor 24 is turned on. The second motor 24 drives the spiral center block 21 through the worm gear 26 and the worm 25 structure to rotate clockwise at a uniform speed. During the rotation, the medicine tube 4 follows the spiral winding deformation movement under the gearing effect of the roller shaft 23 and the clamping and fixing effect of the spiral center block 21. At the same time, under the effect of the thickness, the spirally wound spiral hinged petal 22 is pressed inward to complete the spiral winding. The pressed spiral hinged petal 22 also presses the medicine tube at the inner wall. 4 is pressed to achieve a mutual pressing effect. The medicine tube 4 presses the spiral hinged flap 22 from the tail to the head in sequence to gradually reach the spiral winding state. The corresponding pressed any group of spiral hinged flaps 22 clamps the medicine tube 4 at its inner wall position after completing the spiral winding, so that the medicine tube 4 is gradually clamped and deformed from the tail to the head by the clamped spiral pressing mechanism, so that the medicine can be infused into the two guide wire sleeves 2 through the connecting tube at a stable and uniform speed, thereby achieving the medicine infusion treatment effect on the ovarian part. During the process of medicine infusion, the medicine tube 4 is squeezed and clamped by the spiral hinged flap 22, and the outer side of the medicine tube 4 must always receive the gear pressure of the roller shaft 23. Under the gear pressure of the roller shaft 23, the inner side of the medicine tube 4 can generate a pressing force on the spiral hinged flap 22.

[0064] Preferably, three joints are provided on the self-priming blowing head 5, the first joint is connected to one end of the blowing cavity 9, a first one-way valve plate 28 assembly is provided at the first joint, and the first one-way valve plate 28 assembly can only allow gas to pass from the inside to the outside; a second one-way valve plate 29 assembly is provided at the second joint, and the second one-way valve plate 29 assembly can only allow gas to pass from the outside to the inside; the third joint is connected to the blowing pressure ball 27.

[0065] The blowing cavity 9 inside the outer catheter 1 is used to blow the medicine delivered from the front end of the outer catheter 1, so that the medicine can be scattered to each inner wall area of ​​the cow's cervix or uterus, avoiding omissions, achieving a comprehensive fit effect, and ensuring that each inner wall area of ​​the uterus can achieve the therapeutic effect. A blowing pipe is connected to the port corresponding to the blowing cavity 9 at the rear end of the outer catheter 1, and a self-priming blowing head 5 is connected to the rear end of the blowing pipe. The self-priming blowing head 5 is T-shaped as a whole, with a total of three interfaces. The first one-way valve plate 28 and the expansion fixing sleeve 30 are fixed inside the interface of the self-priming blowing head 5 connected to the blowing pipe. The first one-way valve plate 28 and the expansion fixing sleeve 30 are both made of silicone. The first one-way valve plate 28 is a circular sleeve of a certain length, and a valve is integrally connected to one end near the interface. The valve is a disc-shaped disc with a certain thickness and one side is connected to the inner wall of the circular sleeve of the first one-way valve plate 28. The valve has a deformation characteristic that can be opened inside and outside at the connection. The expansion fixing sleeve 30 is sleeved inside the circular sleeve of the first one-way valve disc 28. The expansion fixing sleeve 30 is a circular ring structure. The port plane of one side of the expansion fixing sleeve 30 is pressed against the valve, and the port plane of the other end is flush with the port plane of the circular sleeve of the first one-way valve disc 28. The inner diameter of the circular hole inside the expansion fixing sleeve 30 is smaller than the outer diameter of the valve. Because the end face is pressed against the valve, the valve cannot be opened and deformed inwardly. In addition, the valve of the first one-way valve disc 28 inside the self-priming blowing head 5 has a margin for opening outward. Therefore, the first one-way valve disc 28 can only allow gas to pass from the inside to the outside, and cannot pass in the opposite direction.

[0066] A second one-way valve sheet 29 and an expansion fixing sleeve 30 are provided at the vertical bifurcation interface of the self-priming air blowing head 5, and an outer cover is inserted at the joint, and a circular hole is provided at the center of the outer cover to facilitate airflow. The inner end face of the outer cover fits the outer end face of the valve of the second one-way valve sheet 29, and there is an opening margin between the internal expansion fixing sleeve 30 and the inner side of the valve, so that the valve of the second one-way valve sheet 29 can only be opened inwards but not outwards, and air can only flow from the outside to the inside, and cannot pass in the opposite direction. A blowing pressure ball 27 is connected to the rear end joint of the self-priming air blowing head 5. The blowing pressure ball 27 is similar to an ellipsoid and is hollow inside. The material is rubber material with elastic deformation characteristics.

[0067] When the inflatable pressure ball 27 is pressed, the valve at the first one-way valve sheet 28 opens outward, and the valve at the second one-way valve sheet 29 cannot open outward, and the gas is discharged to the inflatable tube through the joint. When the inflatable pressure ball 27 elastically recovers after stopping pressing, the inside of the inflatable pressure ball 27 is in a negative pressure state and needs to inhale gas. The valve at the first one-way valve sheet 28 cannot open inward, while the valve at the second one-way valve sheet 29 can open inward, and the gas is sucked in through the joint at the second one-way valve sheet 29 to restore the inflatable pressure ball 27 to its initial state. Repeatedly pressing the inflatable pressure ball 27 can ensure that the inside of the inflatable cavity 9 of the outer catheter 1 can always inflate the medicine in the cow's uterus without producing the effect of suction.

[0068] Preferably, the outer catheter 1 is also provided with an air blowing half-chamber 31 and a medicine liquid half-chamber 32, both of which are two semicircular cavities, which are separated by an L-shaped partition 33, and the bending section of the L-shaped partition 33 is sealed at the port of the medicine liquid half-chamber 32. A medicine through hole 34 is provided on the outer catheter 1, and an annular spray balloon 35 is arranged on the outer catheter 1 at the medicine through hole 34, and a plurality of small holes are evenly arranged on the surface circumference of the annular spray balloon 35.

[0069] This device is mainly used for guiding internal drug delivery, anti-inflammatory and artificial insemination of cows in animal husbandry. The main body of this device is an outer catheter 1, which has a circular cross-section and a certain length. When it is pushed into the cow's vagina 40, the rear end of the outer catheter 1 can be manipulated to make its front end reach the position of the cow's cervix. There are multiple inner cavity channels inside the outer catheter 1, which include a drug delivery cavity 6, a first guide wire sleeve cavity 7, a second guide wire sleeve cavity 8, an air blowing cavity 9, an air blowing half cavity 31 and a liquid medicine half cavity 32. The air blowing half cavity 31 and the liquid medicine half cavity 32 are both semicircular in cross-section, and are structurally a unified circular cavity divided into two independent half cavities by an axial L-shaped partition 33.

[0070] The insufflation half-chamber 31 and the drug liquid half-chamber 32 of the outer catheter 1 are both two semicircular cavities separated by an L-shaped partition 33. The bent section of the L-shaped partition 33 is sealed at the front end port of the drug liquid half-chamber 32, so that the drug liquid cannot overflow from the front end of the outer catheter 1. Two drug through holes 34 are opened axially front and back on the tube wall of the front section of the outer catheter 1, facing the drug liquid half-chamber 32. A circular medicine spraying balloon 35 is arranged on the circumferential outer wall of the outer catheter 1 at the medicine through hole 34. The single-side cross-section of the circular medicine spraying balloon 35 is triangular, extending a large radial length to the periphery, and a plurality of small holes are evenly arranged on the surface circumference of the circular medicine spraying balloon 35. When the medicine half cavity 32 is infused with medicine, the medicine enters the interior of the circular medicine spraying balloon 35 through the medicine through hole 34, and then the medicine can be sprayed onto the 360-degree circumferential inner wall of the cow's vagina 40 and the cervix through the small holes. The triangular cross-sections of the two circular medicine spraying balloons 35 distributed axially front and back can enable the medicine to be sprayed crosswise to avoid missing parts.

[0071] Preferably, an annular shifting balloon 36 is provided on the outer catheter 1, and an airway is opened on the outer catheter 1; one end of the airway is connected to the shifting balloon 36, and the other end is connected to a one-way inflation connector 41; a limit plate 37 is provided on the outer catheter 1, and a handle 38 is connected to the limit plate 37.

[0072] An annular stop balloon 36 is fixedly arranged on the outer tube wall of the outer catheter 1 at a certain distance behind the annular spray balloon 35. The stop balloon 36 is a compliant balloon 18, and the front concave surface of the stop balloon 36 matches the annular convex surface of the cow's cervix toward the vaginal opening, so that the cow's cervix can play a stop-limiting role on the outer catheter 1 through the stop balloon 36, so as to control the outer catheter 1 from being inserted too long into the cow's vagina 40. The operation of medical staff is simplified to avoid operational errors. The airway connected to the stop balloon 36 extends axially along the outer catheter 1 to its rear end area, and is connected to a one-way inflation joint 41, which is convenient for filling the stop balloon 36. A limit plate 37 is provided on the tube wall of the rear end area of ​​the outer catheter 1. The limit plate 37 is similar to a disc shape and is used to limit the outer catheter 1 at the opening of the cow's vagina 40. A rod-shaped handle 38 is fixedly connected to the outside of the limit plate 37. The operator can control the axial movement of the outer catheter 1 by holding the handle 38.

[0073] The function of the blowing half-chamber 31 is the same as that of the blowing chamber 9, which is to splash the liquid medicine infused at the front end port of the external catheter 1 to various inner wall areas. The blowing half-chamber 31 can also be connected to the blowing tube of the self-priming blowing head 5, so that the blowing pressure ball 27 can simultaneously blow the blowing chamber 9 and the blowing half-chamber 31.

[0074] In addition, the outer catheter 1 may be provided with a camera equipped with an LED light inside the tube cavity, so that the operator can intuitively understand the real-time status of the cow's vagina 40 and uterus when inserting the outer catheter 1 into the cow's vagina 40 to spray medicine or infuse semen for artificial insemination, which is more convenient for operation.

[0075] When it is necessary to use this device to deliver medicine to the cow's uterus and ovaries for treatment, the ground powdered medicine is poured into the medicine bottle 16, the medicine inside the medicine bottle 16 enters the funnel 15, and the medicine enters the spiral conveying sheet 13 inside the medicine delivery cavity 6 through the medicine inlet groove 17 on the outer catheter 1. After the outer catheter 1 is inserted into the cow's vagina 40 to reach the specified position, air is introduced into the one-way inflation joint 41 through a syringe, the blocking balloon 36 expands, and the annular protrusion of the cow's cervix forms a blocking position for the blocking balloon 36 to prevent the outer catheter 1 from continuing to enter, and the guide wires 3 inside the two guide wire sleeves 2 are respectively conveyed forward. Because they have their own memory bending deformation characteristics after release, the two guide wires 3 are respectively controlled to be conveyed to the tip positions of the fallopian tubes 39 on both sides, and then the guide wire sleeves 2 are conveyed forward under the traction of the guide wires 3. When the guide wire sleeves 2 reach the position near the tip of the fallopian tube 39, the one-way inflation joints 41 on the two guide wire sleeves 2 are inflated through a syringe, so that the balloons 18 at the front ends of the two guide wire sleeves 2 are filled in the fallopian tube 39 and tightened and fixed, which plays a role in fixing the guide wire sleeves 2 and sealing the fallopian tube 39 at the balloon 18.

[0076] The first motor 10 is turned on. The first motor 10 drives the spiral conveying sheet 13 and the double spiral sheet 14 to rotate synchronously through the rotating shaft 11. The spiral conveying sheet 13 conveys the medicine forward, so that the medicine inside the funnel 15 can be continuously conveyed to the spiral conveying sheet 13 through the medicine feeding slot 17. When the medicine on the spiral conveying sheet 13 is conveyed to the position of the double spiral sheet 14, the first spiral sheet and the second spiral sheet of the double spiral sheet 14 rotate to play a dual role of mixing and conveying the powdered medicine. Because the motor has a certain speed, the spiral conveying sheet 13 and the double spiral sheet 14 also have a certain conveying speed. When being conveyed to the port of the medicine delivery cavity 6 through the double spiral sheet 14, the pressing and blowing effect of the blowing pressure ball 27 can be used to disperse the powdered medicine output from the front end of the medicine delivery cavity 6 and fully cover the inner wall positions of the cow's uterus, thereby ensuring a good therapeutic effect.

[0077] The tail of the medicine tube 4 is clamped into the spiral groove of the spiral center block 21, and the second motor 24 is turned on. The second motor 24 drives the spiral center block 21 to rotate through the worm gear 26 and worm 25 mechanism. During the rotation, the medicine tube 4 is squeezed so that the spiral hinged flap 22 is merged into a spiral state. The spiral hinged flap 22 in the spiral state also exerts a reaction force of squeezing on the medicine tube 4, so that the medicine inside the medicine tube 4 is squeezed out from the tail to the head in sequence, and the medicine enters the guide wire sleeve 2 through the connecting tube, and is transported to the deepest area of ​​the fallopian tube 39 inside the guide wire sleeve 2 under the action of pressure. By spraying fluid medicine, the medicine can directly enter the ovary to achieve a therapeutic effect, and the balloon 18 has a sealing effect, so that the medicine will not flow back from the fallopian tube 39. At the same time, the medicine is infused into the medicine half chamber 32, and the medicine enters the annular spray balloon 35 through the medicine through-hole on the side wall of the medicine half chamber 32, and then is sprayed onto the 360-degree circumferential inner wall of the cow's vagina 40 and cervix through the small holes distributed around the annular spray balloon 35. The triangular cross-sections of the two annular spray balloons 35 distributed axially front and back can enable the medicine to be sprayed crosswise to avoid missing any parts.

[0078] When it is necessary to use this device to infuse semen into the cow's uterus for artificial insemination, the external catheter 1 needs to be inserted into the cow's vagina 40 to a specified depth and then fixed by the blocking balloon 36. Then, the powdered medicine in the medicine bottle 16 is replaced with bull semen, which is transported by the rotating spiral conveying piece 13. Then, the semen is mixed evenly by rotating the double spiral piece 14 and transported to the port for spraying. The semen is blown into the deep of the uterus through the blowing chamber 9, which can greatly increase the cow's probability of pregnancy.

[0079] The innovative technical points and beneficial effects of the present invention are at least:

[0080] 1. According to the structural characteristics of the cow's fallopian tube 39, which is symmetrically curved in a circular arc on both sides of the uterus, a guide wire 3 with a memory bending characteristic is used to extend to the top tip of the cow's fallopian tube 39, and the guide wire sleeve 2 is pulled in and the guide wire sleeve 2 is tightened and fixed relative to the inner wall of the fallopian tube 39 through the balloon 18, and the top area of ​​the fallopian tube 39 is sealed and blocked. The front end of the guide wire sleeve 2 is infused with liquid medicine to treat the ovaries. The sealed blockage of the balloon 18 can ensure that the liquid medicine will not be wasted, and the drug treatment effect of the cow's ovaries is guaranteed to the greatest extent. The ovaries of livestock are treated by minimally invasive or even non-invasive means. In traditional treatment methods, the drugs cannot be effectively delivered to the ovarian part, and ovarian diseases need to be treated by surgery, which greatly increases the treatment operation process and operation time, and increases the difficulty of operation. Because the need for surgery greatly increases the probability that livestock may be infected, it also increases the physical pain of livestock.

[0081] 2. Because powdered therapeutic drugs are needed in the treatment process of the cow's uterine area, if the medicine is simply infused through the lumen, there is a great possibility that the powdered medicine will block the lumen. The spiral conveying piece 13 is used to push the medicine inside the lumen to translate and transport it, avoiding the possibility of blockage. At the same time, the double spiral piece 14 designed in the tail area near the port adopts the first spiral piece and the second spiral piece with a vertical rotation direction to be distributed alternately in sections, so that the medicine is mixed by different stirring effects during the advancement process, which is more effective than the unsegmented single spiral piece. The spiral piece adopts a double-sided hyperbolic structure shape to make the stirring blade area larger, thereby making the mixing force stronger. This method is also suitable for semen transportation and mixing.

[0082] 3. The outer catheter 1 is designed with an air blowing cavity 9 structure, which blows the medicine and semen to a farther area inside the uterus by quickly ejecting gas at the front end port, thereby increasing the treatment range and the probability of pregnancy. At the same time, the air blowing method can not only make the medicine and semen scatter farther, but also make the medicine and semen scatter evenly, achieving a full coverage effect to the greatest extent, greatly increasing the treatment effect and the probability of pregnancy.

[0083] 4. The liquid semi-cavity 32 on the outer catheter 1 is connected to the small holes distributed around the annular spraying balloon 35 to spray the medicine onto the 360-degree inner wall of the cow's vagina 40 and cervix. The triangular cross-sections of the two annular spraying balloons 35 distributed axially front and back can enable the liquid medicine to be sprayed crosswise to avoid missing any parts.

[0084] 5. The front concave surface of the blocking balloon 36 on the outer catheter 1 matches the annular convex surface of the cow's cervix toward the vaginal opening, so that the cow's cervix can limit the outer catheter 1 through the blocking balloon 36, so as to control the outer catheter 1 from being inserted too long into the cow's vagina 40.

[0085] 6. The blowing structure adopts a self-priming blowing structure. One of the one-way valves arranged inside the two interfaces of the T-shaped self-priming blowing head 5 can only be opened toward the outside and the other can only be opened toward the inside, so that one interface can only exhaust and the other interface can only inhale. The blowing pressure ball 27 is always pressed repeatedly, so that the inside of the blowing cavity 9 of the outer catheter 1 can always only blow air to the medicine in the uterus of the cow, and no suction effect will be produced inside, which ensures that the medicine or semen in the uterus is always in a state of blowing and pushing, and will not be sucked back by suction.

[0086] 7. The medicine inside the guide wire sleeve 2 is squeezed on the medicine tube 4 through the spiral extrusion structure to deliver the medicine through pressure. The medicine tube 4 follows the spiral winding deformation movement under the gear action of the roller shaft 23 and the clamping and fixing action of the spiral center block 21. At the same time, under the action of the thickness, the spiral hinged petal 22 that needs to be spirally wound is pressed inward to complete the spiral winding. The compressed spiral hinged petal 22 also presses the medicine tube 4 at the inner wall, so that it has a mutual compression effect.

[0087] 8. The medicine inlet groove 17 of the medicine delivery cavity 6 and the funnel 15 and medicine bottle 16 fixed on the outer catheter 1 above it are used to supply medicine, which simplifies the structure of the medicine supply system. According to the conveying characteristics of the spiral conveying sheet 13, it is designed to be an hourglass-like falling medicine supply, and the medicine is continuously dropped at a fixed point, ensuring that the medicine can always be on the blades of the spiral conveying sheet 13 for translational transportation.

[0088] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-site precise drug delivery and artificial insemination device for cows, characterized in that: include: External catheter, guide wire sleeve, guide wire, power transmission structure, medicine supply structure, medicine tube, spiral extrusion structure, self-priming air blowing head; The outer catheter is provided with a drug delivery cavity, a first guide wire sleeve cavity, a second guide wire sleeve cavity, and an air blowing cavity. The drug supply structure is provided with a powdered drug or bull semen. The drug supply structure is provided on the outer catheter and communicates with the drug delivery cavity to supply the drug to the drug delivery cavity. The power transmission structure is provided in the drug delivery cavity to evenly stir the supplied drug and then push it. The first guide wire sleeve lumen and the second guide wire sleeve lumen are sleeved with guide wire sleeves, the guide wire is sleeved with the guide wire, a gap is set between the guide wire sleeve and the guide wire, one end of the gap between the guide wire sleeve and the guide wire is connected to the medicine tube, a fluid medicine is set in the medicine tube, the medicine tube is set on the spiral extrusion structure, and the spiral extrusion structure squeezes the medicine tube to transport the fluid medicine to the other end of the gap between the guide wire sleeve and the guide wire; the two guide wires have a memory bending property, and the left and right fallopian tubes with symmetrical horn-shaped bends in the body structure of the cow maintain a consistent bend inside; One end of the blowing cavity is connected to the self-priming blowing head, and the other end thereof is used to blow and disperse the fluid medicine and the powdered medicine or bull semen transported from the outer conduit; The self-priming air blowing head only blows air and does not produce air extraction; The power delivery structure comprises: a first motor, a rotating shaft, a fixed frame, a spiral conveying piece, and a double spiral piece; the first motor is arranged on the outer catheter, the rotating shaft is fixed in the medicine delivery cavity by the fixed frame and is connected to the power of the first motor, the spiral conveying piece and the double spiral piece are arranged on the rotating shaft, the powdered medicine or bull semen is supplied to the spiral conveying piece for delivery, and is evenly stirred by the double spiral piece; The double helical sheet is composed of a plurality of groups of first helical sheets and second helical sheets which are alternately connected and evenly distributed along the axial direction of the rotating shaft. Both the first helical sheet and the second helical sheet are double-sided helical structures, and both the first helical sheet and the second helical sheet only intercept half the length of the helical pitch. The rotation directions of the first helical sheet and the second helical sheet are at a vertical angle. The spiral extrusion structure comprises: a bottom plate, a rotating shaft, a spiral center block, a spiral hinged petal, a roller pressure shaft, and a rotating power member; the rotating power member is arranged on one side of the bottom plate, the rotating shaft is arranged on the other side of the bottom plate and is connected to the rotating power member by power, the spiral center block is sleeved on the rotating shaft, a plurality of the spiral hinged petals are hinged on the spiral center block in sequence, the roller pressure shaft is hinged on the bottom plate, and the medicine tube is arranged between the plurality of the spiral hinged petals and the roller pressure shaft to be squeezed and convey the fluid medicine; The rotating power part comprises: a second motor, a worm, and a worm wheel; the second motor, the worm, the worm wheel, and the rotating shaft are driven in sequence.

2. The uterus and ovary multi-site precise drug delivery and artificial insemination device for cows according to claim 1 is characterized in that: The medicine supply structure includes: a funnel and a medicine bottle; a medicine inlet groove is provided on the outer catheter; the lower part of the medicine inlet groove is connected with the medicine delivery cavity, and the upper part is connected with the funnel; a medicine bottle is provided on the funnel, and powdered medicine or bull semen is provided in the medicine bottle.

3. The uterus and ovary multi-site precise drug delivery and artificial insemination device for cows according to claim 1, characterized in that: A compliant balloon is arranged on the end of the guide wire sleeve, and an inflation channel is opened on the guide wire sleeve; one end of the inflation channel is connected to the balloon, and the other end is connected to a one-way inflation joint; after the balloon is inflated, it expands and fixes the guide wire sleeve.

4. The uterus and ovary multi-site precise drug delivery and artificial insemination device for cows according to claim 1, characterized in that: The self-priming blowing head is provided with three joints, the first joint is connected with one end of the blowing cavity, a first one-way valve assembly is arranged at the first joint, the first one-way valve assembly can only allow gas to pass from the inside to the outside; a second one-way valve assembly is arranged at the second joint, the second one-way valve assembly can only allow gas to pass from the outside to the inside; the third joint is connected with a blowing pressure ball.

5. The uterus and ovary multi-site precise drug delivery and artificial insemination device for cows according to claim 1, characterized in that: The outer catheter is also provided with an air blowing half-chamber and a medicine liquid half-chamber, and both the air blowing half-chamber and the medicine liquid half-chamber are two semicircular cavities, which are separated by an L-shaped partition, and the bending section of the L-shaped partition is sealed at the port of the medicine liquid half-chamber. The outer catheter is provided with a medicine through hole, and an annular spray balloon is arranged on the outer catheter at the medicine through hole, and a plurality of small holes are evenly arranged on the surface circumference of the annular spray balloon.

6. The uterus and ovary multi-site precise drug delivery and artificial insemination device for cows according to claim 1, characterized in that: The outer catheter is provided with an annular gear balloon, and an airway is opened on the outer catheter; one end of the airway is connected to the gear balloon, and the other end is connected to a one-way inflation joint; the outer catheter is provided with a limit plate, and the limit plate is connected to a handle.

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