Intelligent injection device based on animal husbandry

The hidden telescopic structure and dual-stage fluid direction control of the intelligent injection device solve the problem of exposed needles in traditional syringes, achieve the integration of precise drug control and needle removal and drug injection, and improve injection efficiency and safety.

CN120585513APending Publication Date: 2025-09-05济南市农产品质量安全中心
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Patent Information

Application Number
CN202510927939.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-07
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

Exposing the needle of a traditional syringe before injection causes stress reactions in animals, increases the difficulty of operation and the risk of cross-infection, and is prone to accidental injury to operators.

Method used

An intelligent injection device is designed, which includes an outer syringe, a squeeze handle, a medicine bottle, a needle and a puncture needle. It adopts a hidden telescopic structure, combined with a distance sensor and two-stage fluid direction control, to achieve precise drug control and integrated needle removal and drug injection, avoiding needle exposure.

Benefits of technology

Reduce injection deviation, reduce the risk of accidental injury, improve injection efficiency and safety, prevent drug stratification and precipitation, and improve operation convenience and safety.

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Abstract

The intelligent injection device comprises an outer needle cylinder, one side of the outer needle cylinder is connected with an extrusion handle, a medicament bottle is installed over the outer needle cylinder, the medicament bottle is internally used for storing an injected medicament, the other side of the outer needle cylinder is connected with a needle head, a puncture needle is embedded in the needle head, and the outer needle cylinder is connected with the extrusion handle. The needle head is movably connected with the puncture needle, and an injection rod is embedded into the outer needle cylinder. The needle head is movably connected with the puncture needle, the puncture needle is embedded into the needle head when not used for injection, accidental injury to workers is avoided, in addition, needle withdrawing and medicine pushing operation can be synchronously completed by pushing the injection rod during injection, the ejector block invades the reagent cylinder, the flowing direction of medicine is opposite to the pushing direction, turbulent flow is generated, and then the medicine flows in an accelerated mode through the injection opening. Uniform mixing of medicaments is effectively promoted, layered precipitation is avoided, and the injection efficiency and effect are improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of injection devices, and in particular to an intelligent injection device based on livestock and poultry. Background Art

[0002] Animal injection is an important part of animal husbandry, pet healthcare and wildlife management. Its operation effect directly affects animal health, breeding efficiency and personnel safety.

[0003] In this regard, patent document No. CN114082042B discloses a retractable insulin syringe with a uniform injection depth. The patent proposes that during the injection process of a conventional syringe, the patient can directly see the needle. Therefore, before the injection, the exposed needle will cause the patient to feel fear, needle phobia, etc., causing discomfort to the patient.

[0004] Based on analysis of existing technologies, conventional syringe needles are exposed before injection, which can easily trigger stress reactions in animals due to visual or tactile stimulation. This not only increases the difficulty of operation but can also cause needle deviation or accidental injury to the operator. Statistics show that the annual needlestick injury rate for livestock workers reaches 12%. Furthermore, exposed needles are susceptible to contamination, increasing the risk of cross-infection. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes an intelligent injection device based on livestock.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: an intelligent injection device for livestock, comprising an outer syringe, one side of which is connected to a squeezing handle, a medicine bottle mounted directly above the outer syringe, the medicine bottle containing the injection medicine, a needle connected to the other side of the outer syringe, a puncture needle embedded in the needle, the needle and the puncture needle being movably connected, and an injection rod embedded in the outer syringe; An injection assembly is embedded in the interior of the outer syringe, and the injection assembly includes a reagent cartridge. The medicine bottle and the reagent cartridge are connected, and a valve is provided at the bottom end of the medicine bottle. When the medicine bottle and the reagent cartridge correspond, the valve is opened, and an adjusting plug is embedded in the interior of the reagent cartridge, and an adjusting block is installed on the outer wall of the adjusting plug. The reagent cartridge and the adjusting plug are slidingly connected, and an embedded tube is embedded in the inner wall of the adjusting plug, and an injection port is provided on the embedded tube. A sealing sheet is embedded on one side of the opening of the reagent cartridge, and the sealing sheet is used to seal the interior of the reagent cartridge, and a top block is embedded in the interior of the top block, and a puncture needle is embedded in the interior of the top block, and the top block and the puncture needle are fixedly connected.

[0007] Furthermore, the squeezing handle and the injection rod are movably connected, and the squeezing handle is used to push the injection rod to move inside the outer syringe, and the other side of the injection rod is connected to the adjustment plug.

[0008] Furthermore, a distance sensor is provided between the reagent cylinder and the regulating plug, and the distance sensor is used to detect the distance between the reagent cylinder and the regulating plug. The regulating block passes through the inner wall of the outer syringe and extends to the outside of the outer syringe.

[0009] Furthermore, the embedded tube is arranged at the center of the regulating plug, and the injection port is opened at the end of the embedded tube on a side close to the regulating plug, and the injection port is used for the circulation of the medicine.

[0010] Furthermore, the interior of the embedded tube is configured as a hollow tubular structure, the embedded tube is embedded in the interior of the puncture needle, and the embedded tube is communicated with the interior of the puncture needle.

[0011] Furthermore, a liquid inlet is provided at the top of the reagent cartridge, which is connected to the medicine bottle. The reagent inside the medicine bottle is guided to the inside of the reagent cartridge through the liquid inlet for temporary storage. The reagent cartridge and the sealing sheet form an empty chamber for temporary storage of medicine.

[0012] Furthermore, the embedded tube passes through the through hole at the center of the sealing sheet and the through hole at the center of the top block and is connected to the puncture needle, and a traction rope is connected between the top block and the sealing sheet.

[0013] Furthermore, a limit block is installed inside the outer syringe, and when the liquid inlet at the top of the reagent cylinder corresponds to the medicine bottle, the sealing sheet and the top block are separated so that the traction rope is in a taut state.

[0014] Furthermore, the puncture needle is fixed by the through hole in the center of the top block, and when the traction rope is in a taut state, the puncture needle is embedded in the interior of the outer syringe.

[0015] Furthermore, a beveled induction groove is etched on the surface of the puncture needle, which is used to guide the needle tip to break along a preset position due to the stress concentration effect.

[0016] Compared with the existing technology, the beneficial effects of the present invention include: pushing the injection rod during injection can simultaneously complete the needle removal and drug injection operations, the needle presses the animal's skin to play a supporting and positioning role, reducing injection deviation, and at the same time the top block invades the reagent cylinder to make the flow direction of the drug first opposite to the propulsion direction to generate turbulence, and then accelerate the flow through the injection port, effectively promoting uniform mixing of the drug, avoiding stratification and precipitation, and improving injection efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1 Schematically shows a three-dimensional structural diagram of an intelligent injection device based on livestock animals proposed in one embodiment of the present invention; Figure 2 Schematically shows the structure of an outer syringe and a puncture needle of an intelligent injection device for livestock according to one embodiment of the present invention; Figure 3 Schematically shows a cross-sectional structural diagram of an outer syringe of an intelligent injection device for livestock animals proposed in accordance with one embodiment of the present invention; Figure 4 Schematically shows a schematic structural diagram of a reagent cartridge and an embedded tube of an intelligent injection device for livestock animals according to one embodiment of the present invention; Figure 5 Schematically shows a schematic structural diagram of a reagent cartridge and an adjustment plug of a livestock-based intelligent injection device according to one embodiment of the present invention in a disassembled state; Figure 6 Schematically shows a structural diagram of an intelligent injection device for livestock in an injection state according to one embodiment of the present invention; Figure 7 A schematic diagram of the structure of an intelligent injection device for livestock according to one embodiment of the present invention is shown, with the puncture needle embedded in the outer syringe and not in the injection state; Figure 8 The figure schematically shows the structure of the regulating plug and the ejector block of an intelligent injection device for livestock according to one embodiment of the present invention.

[0018] In the figure: 11, outer syringe; 12, squeezing handle; 13, medicine bottle; 14, needle; 15, puncture needle; 16, injection rod; 2, injection assembly; 21, adjustment block; 22, reagent cartridge; 23, adjustment plug; 24, embedded tube; 25, sealing piece; 26, injection port; 27, liquid inlet; 28, top block; 29, traction rope. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0020] According to one embodiment of the present invention, Figures 1-8 An intelligent injection device for livestock animals includes an outer syringe 11, one side of which is connected to a squeezing handle 12, a medicine bottle 13 installed just above the outer syringe 11, the medicine bottle 13 is used to store the medicine for injection, the other side of the outer syringe 11 is connected to a needle 14, a puncture needle 15 is embedded in the needle 14, and the surface of the puncture needle 15 is etched with an oblique induction groove for guiding the puncture needle 15 to break along a preset position due to the stress concentration effect. By etching the induction groove at the half position of the puncture needle 15, the puncture needle 15 can be easily broken. In terms of the setting of the puncture needle 15, the length of the puncture needle 15 is longer than that of a traditional needle, which is roughly twice that of an ordinary needle. In this way, when facing special circumstances, such as when the animal can It can carry infectious diseases. By breaking the needle after use, work efficiency can be improved. The front section is broken and discarded. The rear section of the needle does not come into contact with the animal, so the length can be adjusted for continued use. The needle head 14 and the puncture needle 15 are movably connected. The movable setting of the needle head 14 and the puncture needle 15 allows the puncture needle 15 to be retracted. When no injection is performed, the puncture needle 15 is embedded in the inside of the needle head 14, which can avoid accidental injury to the staff; an injection rod 16 is embedded in the interior of the outer syringe 11, and the squeezing handle 12 and the injection rod 16 are movably connected. The squeezing handle 12 is used to push the injection rod 16 to move inside the outer syringe 11, and the other side of the injection rod 16 is connected to the adjustment plug 23.

[0021] When performing an injection, the medicine is first filled into the medicine bottle 13, and the medicine bottle 13 is connected to the top of the outer syringe 11 by screwing them together. Since a valve is provided at the bottom of the medicine bottle 13, the outflow of the reagent in the medicine bottle 13 can be controlled by the valve. By holding the squeezing handle 12 and pressing the squeezing handle 12, the squeezing handle 12 pushes the injection rod 16 forward. When the injection rod 16 moves forward, it pushes the reagent cartridge 22 and the regulating plug 23 provided in the outer syringe 11. Through the movement of the reagent cartridge 22 and the regulating plug 23, the reagent is injected into the animal's body from the inside of the puncture needle 15. The specific operation is as follows: The outer syringe 11 is embedded with an injection assembly 2, which includes a reagent cartridge 22. The medicine bottle 13 and the reagent cartridge 22 are connected. A valve is provided at the bottom end of the medicine bottle 13. When the medicine bottle 13 and the reagent cartridge 22 correspond, the valve is opened. An adjusting plug 23 is embedded in the reagent cartridge 22. A distance sensor is provided between the reagent cartridge 22 and the adjusting plug 23. The distance sensor is used to detect the distance between the reagent cartridge 22 and the adjusting plug 23. The adjusting block 21 passes through the inner wall of the outer syringe 11 and extends to the outside of the outer syringe 11. In order to control the dosage of the reagent, the position of the reagent cartridge 22 and the adjusting plug 23 can be adjusted to adjust the dosage of the reagent. When the adjusting plug 23 gradually moves toward the inside of the reagent cartridge 22, the internal space of the reagent cartridge 22 becomes smaller. At this time, the amount of reagent stored in the reagent cartridge 22 will be relatively less. By adjusting the positional relationship between the reagent cartridge 22 and the adjusting plug 23, the amount of reagent can be adjusted. During the adjustment, in order to improve the accuracy, a distance sensor is provided on the reagent cartridge 22 and the adjusting plug 23. The distance between the distance sensors can also be used to determine the depth to which the adjusting plug 23 is embedded in the inside of the reagent cartridge 22, thereby calculating the amount of reagent that can be stored in the reagent cartridge 22. In this way, the function of intelligent drug control is achieved. Such a setting can prevent the occurrence of too much or too little reagent. After adjusting the internal space of the reagent cartridge 22, the actual content of the medicine bottle 13 can be introduced into the interior of the reagent cartridge 22. In order to prevent the reagent inside the reagent cartridge 22 from flowing out, the sealing sheet 25 blocks one side of the opening of the reagent cartridge 22, so that a closed space is formed in the reagent cartridge 22 for storing the reagent diverted from the medicine bottle 13.

[0022] By using the distance sensor between the reagent cartridge 22 and the regulating plug 23, the positional relationship between the two can be accurately adjusted to calculate the stored dosage in the reagent cartridge 22, thereby realizing intelligent drug control and preventing excessive or insufficient dosage of the reagent. After the reagent is quantitatively determined, the needle is removed and the drug is injected by pushing the injection rod 16. The specific operation is as follows: An adjusting block 21 is installed on the outer wall of the adjusting plug 23, and the reagent cartridge 22 and the adjusting plug 23 are slidably connected. An inner wall of the adjusting plug 23 is embedded with an embedded tube 24, and an injection port 26 is provided on the embedded tube 24. The embedded tube 24 is arranged at the center position of the adjusting plug 23, and the injection port 26 is opened at the end of the embedded tube 24 close to the side of the adjusting plug 23. The injection port 26 is used for the circulation of the medicine. The interior of the embedded tube 24 is arranged into a hollow tubular structure. The embedded tube 24 is embedded in the interior of the puncture needle 15. The embedded tube 24 and the interior of the puncture needle 15 are connected. A sealing sheet 25 is embedded on one side of the opening of the reagent cartridge 22. The sealing sheet 25 is used to seal the interior of the reagent cartridge 22. A top block 28 is embedded in the interior of the outer syringe 11, and the puncture needle 15 is embedded in the interior of the top block 28. The top block 28 and the puncture needle 15 are fixedly connected.

[0023] A liquid inlet 27 is provided at the top of the reagent cartridge 22, and the liquid inlet 27 is connected to the medicine bottle 13. The reagent inside the medicine bottle 13 is guided to the inside of the reagent cartridge 22 through the liquid inlet 27 for temporary storage. The reagent cartridge 22 and the sealing piece 25 form an empty warehouse for temporarily storing medicine. The embedded tube 24 passes through the through hole provided at the center of the sealing piece 25 and the through hole at the center of the top block 28 and is connected to the puncture needle 15. A traction rope 29 is connected between the top block 28 and the sealing piece 25. A limiting block is installed inside the outer syringe 11. When the liquid inlet 27 at the top of the reagent cartridge 22 corresponds to the medicine bottle 13, the sealing piece 25 and the top block 28 are separated so that the traction rope 29 is in a taut state. The puncture needle 15 is fixed by the through hole in the center of the top block 28. The traction rope 29 is in a taut state so that the puncture needle 15 is embedded in the interior of the outer syringe 11.

[0024] When resetting after the injection, the movement of the injection rod 16 drives the movement of the reagent cartridge 22, and then drives the movement of the sealing plate 25. When the sealing plate 25 moves to the outermost side of the reagent cartridge 22, it is limited. At this time, the movement of the reagent cartridge 22 will drive the expansion of the traction rope 29, and the traction rope 29 drives the top block 28 to reset, thereby realizing the next injection operation.

[0025] When the needle is removed and the medicine is injected, the reagent cartridge 22 and the regulating plug 23 are moved simultaneously by pushing the injection rod 16. When the sealing piece 25 inside the reagent cartridge 22 just contacts the top block 28, if the push is continued, the sealing piece 25 pushes the top block 28 to move. When the top block 28 moves, the puncture needle 15 is extended. When the top block 28 moves to the end and cannot move forward any further, the needle removal operation is completed. After the needle is removed, if the injection rod 16 is continued to be pushed, the movement of the injection rod 16 drives the reagent cartridge 22 to continue to move. When the reagent cartridge 22 continues to squeeze the top block 28, the top block 28 will gradually be embedded in the interior of the reagent cartridge 22. During the process of embedding into the interior of the reagent cartridge 22, the space inside the reagent cartridge 22 is reduced, and the medicine inside the reagent cartridge 22 will flow into the interior of the puncture needle 15 through the embedded tube 24 provided inside the reagent cartridge 22. This is because the end of the embedded tube 24 is provided with an injection port 26. As the top block 28 is continuously intruded into the reagent cartridge 22 by squeezing, the reagent inside the reagent cartridge 22 is squeezed. The extruded design allows the reagent to flow into the interior of the embedded tube 24 through the injection port 26. Since the interior of the embedded tube 24 is connected to the interior of the puncture needle 15, the actual content of the interior of the embedded tube 24 can be discharged through the puncture needle 15. The operation of removing the needle and pushing the medicine can be achieved by pressing the injection rod 16, which is simpler to operate. In addition, during operation, the needle 14 can be pressed on the epidermis of the animal. As the squeezing handle 12 is pressed to drive the injection rod 16 to advance, the puncture needle 15 can enter the animal's body under the wrapping of the needle 14. This can reduce the direct exposure of the puncture needle 15 to the external environment. In addition, by pressing the needle 14 on the surface of the animal, it can play a supporting and positioning role, avoiding accidental injury caused by deviation during injection.

[0026] The anti-accidental puncture function is achieved through the hidden telescopic structure of the puncture needle 15. The puncture needle 15 is completely embedded in the needle head 14 in the non-injection state, and the needle head 14 forms a double physical isolation with the outer syringe 11, avoiding the risk of exposure of the puncture needle 15 due to animal struggles, accidental touch by personnel, or collision with the instrument. When an injection is required, the puncture needle 15 is extended by pushing the injection rod 16 to trigger the top block 28, thereby avoiding accidental injuries caused by the continuous exposure of the needle body of a traditional syringe. In addition, the supporting and positioning function of the needle head 14 can reduce hand shaking during injection, further reducing the probability of accidental punctures caused by unstable operation. It is particularly suitable for use in scenarios where animal restraint is difficult or group immunity is necessary, significantly improving operational safety.

[0027] When injecting animals, the injection device can not only realize the integrated functions of needle removal and drug injection, but also play the role of shaking the internal reagent, as follows: However, in some nutrient solution injection reagents, some reagents will experience stratification and precipitation. In order to avoid this situation, the negative impact caused by stratification can be avoided by shaking. After the reagent inside the medicine bottle 13 is temporarily stored in the inside of the reagent barrel 22, when injecting the medicine, the flow direction of the medicine inside the reagent barrel 22 is divided into two segments. The invasion of the top block 28 of the first segment causes the inside of the reagent barrel 22 to be squeezed. At this time, the flow direction of the medicine is opposite to the propulsion direction of the injection rod 16. Turbulence can be generated by reverse flow to promote uniform mixing of the medicine and avoid stratification and precipitation. However, some reagents with higher viscosity and concentration will be more likely to stratify. After the second segment reagent passes through the injection port 26, the flow direction and the propulsion direction of the injection rod 16 remain consistent. In this process, the reagent can accelerate the flow when passing through the injection port 26, thereby improving the injection efficiency and effect.

[0028] Efficient mixing is achieved through a two-stage fluid direction control structure. During the injection phase, when the top block 28 penetrates the reagent barrel 22, it forces the reagent to flow in the opposite direction of the injection rod 16. The fluid impact and turbulence effects break up the particle agglomeration and improve the dispersion of the precipitated particles in the reagent.

[0029] In addition, in the setting of the puncture needle 15, the puncture needle 15 is divided into two sections. When the first section is in use, the second section is embedded in the needle head 14 and the outer syringe 11. At this time, the interior of the second section is filled with an embedded tube 24. The filling of the embedded tube 24 allows the reagent to directly skip the second section of the puncture needle 15 when passing through the embedded tube 24 and be transported to the interior of the first section of the puncture needle 15. This can also prevent the interior of the puncture needle 15 from being contaminated. After a period of use, the first section of the puncture needle 15 is cut off and the second section of the puncture needle 15 is connected to the top block 28, so that it can be used again.

[0030] Through the movable connection between the needle 14 and the puncture needle 15, the puncture needle 15 can be embedded in the needle 14 when not injecting, avoiding accidental injury to the staff. The surface of the puncture needle 15 is etched with an oblique induction groove, so that the front section can be conveniently broken off and discarded after use, and the length of the rear section can be adjusted for continued use, thereby improving work efficiency and reducing the risk of infection.

[0031] This intelligent injection device has been comprehensively upgraded in terms of precise drug control, stress control and operational safety, improving operational safety and convenience.

[0032] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An intelligent injection device for livestock, characterized in that: The syringe comprises an outer syringe, one side of which is connected to a squeezing handle, a medicine bottle mounted directly above the outer syringe, the medicine bottle containing the medicine to be injected, a needle connected to the other side of the outer syringe, a puncture needle embedded in the needle, the needle and the puncture needle being movably connected, and an injection rod embedded in the outer syringe; An injection assembly is embedded in the interior of the outer syringe, and the injection assembly includes a reagent cartridge. The medicine bottle and the reagent cartridge are connected, and a valve is provided at the bottom end of the medicine bottle. When the medicine bottle and the reagent cartridge correspond, the valve is opened, and an adjusting plug is embedded in the interior of the reagent cartridge, and an adjusting block is installed on the outer wall of the adjusting plug. The reagent cartridge and the adjusting plug are slidingly connected, and an embedded tube is embedded in the inner wall of the adjusting plug, and an injection port is provided on the embedded tube. A sealing sheet is embedded on one side of the opening of the reagent cartridge, and the sealing sheet is used to seal the interior of the reagent cartridge, and a top block is embedded in the interior of the top block, and a puncture needle is embedded in the interior of the top block, and the top block and the puncture needle are fixedly connected.

2. The smart injection device for livestock according to claim 1, characterized in that: The squeezing handle and the injection rod are movably connected. The squeezing handle is used to push the injection rod to move inside the outer syringe. The other side of the injection rod is connected to the regulating plug.

3. The smart injection device for livestock according to claim 1, characterized in that: A distance sensor is provided between the reagent cylinder and the regulating plug, and the distance sensor is used to detect the distance between the reagent cylinder and the regulating plug. The regulating block passes through the inner wall of the outer syringe and extends to the outside of the outer syringe.

4. The smart injection device for livestock according to claim 1, characterized in that: The embedded tube is arranged at the center of the regulating plug, and the injection port is opened at the end of the embedded tube on one side close to the regulating plug, and the injection port is used for the circulation of medicine.

5. The smart injection device for livestock according to claim 4, characterized in that: The interior of the embedded tube is configured as a hollow tubular structure. The embedded tube is embedded in the interior of the puncture needle, and the embedded tube is communicated with the interior of the puncture needle.

6. The smart injection device for livestock according to claim 1, characterized in that: The top of the reagent cartridge is provided with a liquid inlet, which is connected to the medicine bottle. The reagent inside the medicine bottle is guided to the inside of the reagent cartridge through the liquid inlet for temporary storage. The reagent cartridge and the sealing sheet form an empty chamber for temporary storage of medicine.

7. The smart injection device for livestock according to claim 1, characterized in that: The embedded tube passes through the through hole at the center of the sealing sheet and the through hole at the center of the top block and is connected to the puncture needle. A traction rope is connected between the top block and the sealing sheet.

8. The smart injection device for livestock according to claim 7, characterized in that: A limiting block is installed inside the outer syringe. When the liquid inlet at the top of the reagent cylinder corresponds to the medicine bottle, the sealing sheet and the top block are separated so that the traction rope is in a taut state.

9. The smart injection device for livestock according to claim 8, characterized in that: The puncture needle is fixed by the through hole in the center of the top block, and the traction rope is in a tight state so that the puncture needle is embedded in the interior of the outer syringe.

10. The smart injection device for livestock according to claim 9, characterized in that: The surface of the puncture needle is etched with an oblique induction groove, which is used to guide the needle tip to break along a preset position due to the stress concentration effect.

Citation Information

Patent Citations

  • Standardized Insulin Injector with Deep Retractable Insulin Injector

    CN114082042B