Veterinary rapid injector

Abstract

The invention relates to the field of veterinary medical instruments, in particular to a veterinary rapid injector which comprises a shell, an injection assembly, a trigger detection unit, a locking and releasing mechanism and an execution unit. The core design is as follows: when the needle head pierces into a livestock body, the trigger sliding block is pushed, and then the switch is triggered through the trigger rod; the control panel immediately instructs the push-and-pull electromagnet to act, and mechanical locking formed by the claw hook, the steel ball, the sliding sleeve and the sliding rod is relieved; the extension spring is released instantly to drive the sliding block to impact the needle tube push rod at a high speed, and rapid automatic injection of liquid medicine is completed. According to the invention, the automatic operation of puncturing and injecting is realized, the traditional complex process is simplified into a single action, the risk that an operator is injured by livestock is remarkably reduced, meanwhile, the rapid, sufficient and reliable injection is ensured by using the spring power, the safety and efficiency of the injection operation are greatly improved, and the labor intensity of workers is reduced. The medicine injection and immunization device is especially suitable for medicine injection and immunization of strong or frightened livestock in a large-scale farm.

Description

Technical Field

[0001] This invention belongs to the field of veterinary medical device technology, and particularly relates to a veterinary rapid injector. Background Technology

[0002] In large-scale livestock farming, disease prevention and vaccination are crucial for ensuring both profitability and animal health. Currently, animal injections and vaccinations primarily rely on manual labor, typically requiring multiple workers to restrain the animals and prevent them from struggling. However, significant differences in temperament exist between different breeds and individuals; some animals are aggressive or easily startled, leading to strong stress reactions during injections. This not only causes injection site errors and drug extravasation, affecting treatment efficacy and immunization success rates, but also frequently results in injuries to operators, such as being kicked, bumped, or bitten, posing significant safety hazards. Furthermore, manual restraint and injection processes are time-consuming, labor-intensive, and inefficient, especially in large-scale farms, making it difficult to meet the demands for rapid, batch processing.

[0003] To address these issues, the industry has explored the use of flying needle injection technology. This technology involves remotely projecting a drug-loaded needle into the animal's body for rapid injection. However, after flying needle injection, the needle remains lodged inside the animal's body. In the absence of anesthesia, the animal's movement can easily cause the needle to bend, break, or cause secondary injury, making it unsuitable for routine immunization and treatment scenarios.

[0004] In summary, existing methods of injecting livestock generally suffer from problems such as low operational safety, low efficiency, reliance on manual labor, and significant stress on animals. Therefore, there is an urgent need to develop a veterinary syringe that is simple in structure, easy to operate, capable of rapid automatic injection, and suitable for livestock of all temperaments without anesthesia. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a rapid injection veterinary syringe. This syringe aims to enable a single person to safely and quickly complete the injection operation. Through an automatic triggering and injection mechanism combining mechanical and electronic control, it reduces the time of direct confrontation between humans and animals, lowers operational risks, and improves injection success rate and operational efficiency.

[0006] To achieve the above objectives, the technical solution created by this invention is implemented as follows: A veterinary rapid injector, comprising: The outer shell includes a front shell, a support base, and a rear shell. The front shell and the rear shell are respectively connected to both sides of the support base. A support frame is provided inside the front shell, and a cap is connected to the end of the support frame away from the rear shell. An injection assembly includes a trigger cylinder, a trigger slider, a syringe and a needle. The trigger slider is slidably disposed inside a cap and connected to the trigger cylinder. The trigger cylinder is slidably disposed inside a support frame. A first elastic element is disposed between the trigger cylinder and the support frame. The syringe is disposed inside the trigger cylinder and the trigger slider, and the needle is connected to the syringe and extends out of the trigger slider. The trigger detection unit includes a trigger rod and a switch. The trigger rod is mounted on the trigger cylinder, and the switch is mounted on the support base. The locking and releasing mechanism includes a sliding block, a claw hook, a sliding sleeve, a sliding rod, a steel ball, and a push-pull electromagnet. The sliding block is slidably connected to the trigger cylinder and connected to the support frame through a second elastic element. The claw hook is hinged to the sliding sleeve. The sliding sleeve is slidably disposed within the support base and a third elastic element is disposed between the sliding sleeve and the support base. A limit hole is opened on the sliding sleeve along the circumferential direction, and the steel ball is disposed within the limit hole. The sliding rod is slidably disposed within the sliding sleeve and a fourth elastic element is disposed between the sliding rod and the sliding sleeve. The push-pull electromagnet is disposed within the rear housing, and the telescopic rod of the push-pull electromagnet is connected to the sliding rod. The execution unit includes a control board and a power supply disposed within the rear housing; When the needle pierces the animal's body and pushes the trigger slider, the trigger cylinder drives the trigger rod to trigger the switch. The control board controls the power supply to energize the push-pull electromagnet, which pulls the slide rod to move, causing the sliding sleeve to move and drive the claw hook to swing to release the sliding block. The sliding block pushes the needle to complete the injection.

[0007] Furthermore, the number of claw hooks is at least two, and they are evenly arranged along the circumference of the sliding block.

[0008] Furthermore, the part of the slide bar that contacts the steel ball has a variable diameter structure, which includes a large-diameter cylindrical surface, an inclined surface, and a small-diameter cylindrical surface.

[0009] Furthermore, the hinge joint between the claw hook and the sliding sleeve has a right angle on the inside and a rounded corner on the outside, which restricts the free swing angle of the claw hook after releasing the sliding block.

[0010] Furthermore, a shoulder is provided on the sliding block, the shoulder is held by a claw hook, and the surface of the shoulder in contact with the claw hook is an inclined surface.

[0011] Furthermore, the veterinary rapid injector also includes a limiter, which is mounted on a support frame to limit the movement distance of the syringe.

[0012] Furthermore, a limit screw is provided on the support base to limit the sliding distance of the sleeve.

[0013] Furthermore, there are two second elastic elements, and two fixing plates are arranged radially on the sliding block. One end of the two second elastic elements hooks onto the support frame, and the other end hooks onto the fixing plate.

[0014] Furthermore, the second elastic element is a tension spring, while the first, third, and fourth elastic elements are all compression springs.

[0015] Furthermore, the support has an inner hole, and the part of the inner hole that contacts the steel ball has a rounded transition, the radius of which is the same as the radius of the steel ball.

[0016] Compared with the prior art, the present invention can achieve the following beneficial effects: 1. This invention triggers automatic injection by contacting the slider with the animal's body. Operators do not need to perform additional injection actions after the needle is inserted, effectively avoiding accidents caused by the animal's struggle or resistance. It is particularly suitable for injection scenarios involving dangerous animals.

[0017] 2. The entire injection process can be completed by inserting the needle into the animal's body in one action. No multiple people are needed to hold the animal still. A single person can complete the entire operation, which saves labor costs and shortens the operation time, significantly improving the efficiency of immunization and drug injection in large-scale farms.

[0018] 3. Using a tension spring as the injection driving force, the spring force acts directly on the sliding block to squeeze the plunger of the syringe, which can provide a stable and strong thrust, ensuring that the drug is injected quickly in a short time, avoiding the injection failure problem caused by uneven speed or insufficient thrust in traditional manual injection.

[0019] 4. The veterinary rapid injector adopts a modular design. The core components achieve automatic injection through a combination of mechanical linkage and electromagnetic control, and the overall structure is compact. When in use, only the needle and syringe need to be pre-loaded. After piercing the livestock, the injection is completed automatically, without the need for complicated operation training.

[0020] 5. After injection, simply push the sliding block to the right to automatically engage and reset the claw hook. Then, replace the disposable needle and syringe for reuse. All other parts are reusable, reducing usage costs and meeting the economic requirements of veterinary medical devices.

[0021] 6. The length of the trigger slider can be adjusted according to the different body shapes and hair thicknesses of different livestock. The limiter can effectively prevent the syringe from malfunctioning before the slider is released, ensuring that the device is suitable for the injection needs of different types of livestock such as cattle, sheep, and pigs.

[0022] 7. Unlike the flying needle injection technique, the needle of this invention is pulled out along with the syringe after the injection is completed, and will not remain in the animal's body. There is no risk of needle breakage, infection or impact on the animal's subsequent activities caused by needles left in the body. It is safer and has a wider range of applications. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the structure of a veterinary rapid injector according to an embodiment of the present invention; Figure 2 yes Figure 1 Sectional view along line AA; Figure 3 This is a schematic diagram of the structure of the support base according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection structure between the claw hook and the sliding sleeve according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached drawings: Front shell 1-1, Support base 1-2, Rear shell 1-3, Support frame 1-4, Cap 1-5, Limiter 1-6, Limiting screw 1-7, First elastic element 1-8, Rounded corner 1-9, Trigger cylinder 2-1, Trigger slider 2-2, Needle tube 2-3, Needle tip 2-4, Trigger rod 3-1, Switch 3-2, Sliding block 4-1, Claw hook 4-2, Sliding sleeve 4-3, Sliding rod 4-4, Steel ball 4-5, Push-pull electromagnet 4-6, Second elastic element 4-7, Third elastic element 4-8, Fourth elastic element 4-9, Cover plate 4-10, Hinge part 4-11, Fixing plate 4-12, Control board 5-1, and Power supply 5-2. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] The invention will now be described in detail with reference to the figures and embodiments.

[0030] like Figure 1 and Figure 2 As shown, the veterinary rapid injector provided in the embodiment of the present invention includes a shell, an injection assembly, a trigger detection unit, a locking release mechanism, and an execution unit. The shell serves as a protective enclosure for the veterinary rapid injector, protecting the other structures. A portion of the injection assembly is disposed within the shell, while the other portion extends out of the shell. The trigger detection unit and the locking release mechanism are both disposed within the shell.

[0031] The outer shell includes a front shell 1-1, a support base 1-2 and a rear shell 1-3. The front shell 1-1 and the rear shell 1-3 are respectively connected to the two sides of the support base 1-2. A support frame 1-4 is provided inside the front shell 1-1, and a cap 1-5 is connected to the end of the support frame 1-4 away from the rear shell.

[0032] The injection assembly includes a trigger cylinder 2-1, a trigger slider 2-2, a needle tube 2-3, and a needle tip 2-4. The trigger slider 2-2 is slidably disposed within the cap 1-5, and the trigger cylinder 2-1 is slidably disposed within the support frame 1-4. A first elastic element 1-8, which is a compression spring, is disposed between the trigger cylinder 3-1 and the support frame 1-4 to provide a restoring force for the trigger cylinder 3-1 to reset. The trigger slider 2-2 is connected to one end of the trigger cylinder 2-1, and the trigger cylinder 2-1 is moved by the trigger slider 2-2. The needle tube 2-3 is disposed within the trigger cylinder 2-1 and the trigger slider 2-2, and the needle tip 2-4 is connected to the needle tube 2-3 and extends out of the trigger slider 2-2.

[0033] The trigger detection unit includes a trigger rod 3-1 and a switch 3-2. The trigger rod 3-1 is mounted on the trigger cylinder 2-1 and moves synchronously with the trigger cylinder 2-1. The switch 3-2 is mounted on the support base 1-2. When the trigger rod 3-1 contacts the switch 3-2, the locking release mechanism is triggered.

[0034] The locking and releasing mechanism includes a sliding block 4-1, a claw hook 4-2, a sliding sleeve 4-3, a sliding rod 4-4, a steel ball 4-5, and a push-pull electromagnet 4-6. An elongated hole is provided on the front housing 1-1 to facilitate manual operation of the sliding block 4-1. The sliding block 4-1 is slidably connected to the trigger cylinder 2-1. The sliding block 4-1 is connected to the support frame 1-4 via a second elastic element 4-7. There are at least two second elastic elements 4-7, and the sliding block 4-1 has the same number of fixed elements along its axial direction as the number of second elastic elements 4-7. Fixed plate 4-12, one end of each second elastic element 4-7 hooks onto support frame 1-4, and the other end of each second elastic element 4-7 hooks onto fixed plate 4-12. The second elastic element 4-7 is a tension spring; it deforms and stores energy when the claw hook 4-2 hooks onto sliding block 4-1. When the claw hook 4-2 releases sliding block 4-1, the restoring force generated by the second elastic element 4-7 pushes sliding block 4-1 to move, squeezing the push rod of syringe 2-3 to complete the injection action. There are at least two claw hooks 4-2, each hooked onto sliding sleeve 4-12. 3. Hinged connection; the sliding sleeve 4-3 is slidably disposed within the support base 1-2, and a third elastic element 4-8 is disposed between the sliding sleeve 4-3 and the support base 1-2. The third elastic element 4-8 is a compression spring. When the claw hook 4-2 hooks the sliding block 4-1, it deforms and stores energy. When the claw hook 4-2 releases the sliding block 4-1, the restoring force generated by the third elastic element 4-8 drives the sliding sleeve 4-3 to move within the support base 1-2. A limiting hole is formed on the sliding sleeve 4-3 along the circumferential direction. A steel ball 4-5 is disposed within the limiting hole and rolls within the limiting hole. The sliding rod 4-4 is slidably disposed within the sliding sleeve 4-3, and a fourth elastic element 4-9 is disposed between the sliding rod 4-4 and the sliding sleeve. The fourth elastic element 4-9 is a compression spring. When the claw hook 4-2 hooks the sliding block 4-1, it deforms and stores energy. When the claw hook 4-2 releases the sliding block 4-1, the restoring force generated by the fourth elastic element 4-9 drives the sliding rod 4-4 to slide within the sliding sleeve 4-3. The push-pull electromagnet 4-6 is disposed within the rear shell 1-3 and fixed on the support base 1-2. The telescopic rod of the push-pull electromagnet 4-6 is connected to the sliding rod.

[0035] A cover plate 4-10 is installed at the end of the sliding sleeve 4-3. A through hole is provided on the cover plate 4-10 for the sliding rod 4-4 to pass through, so that the cover plate 4-10 abuts against the fourth elastic element 4-9.

[0036] Limit screws 1-7 are provided on the support base 1-2 to limit the extreme position of the sliding sleeve 4-3.

[0037] The part of the slide bar 4-4 that contacts the steel ball 4-5 is a variable diameter structure, which includes a large diameter cylindrical surface, an inclined surface, and a small diameter cylindrical surface.

[0038] like Figure 3As shown, the support base 1-2 has a stepped inner hole. The diameter of the inner hole on the left side of the support base 1-2 is the same as the diameter of the outer cylindrical surface of the claw hook 4-2, ensuring that the claw hook 4-2 will not open inside the support base 1-2. The part of the inner hole on the right side of the support base 1-2 that contacts the steel ball 4-5 is transitioned with a fillet 1-9. The radius of this fillet 1-9 is the same as the radius of the steel ball 4-5. This fillet 1-9 cooperates with the large-diameter cylindrical surface of the slide rod 4-4 to limit the position of the steel ball 4-5.

[0039] The veterinary rapid injector also includes a limiter 1-6, which is mounted on the support frame 1-4 to limit the movement distance of the syringe 2-3 and prevent the liquid medicine in the syringe 2-3 from being pushed out before the sliding block 4-1 is released.

[0040] like Figure 4 As shown, the part of the sliding block 4-1 that is held by the claw hook 4-2 has a shoulder. The surface of the shoulder that contacts the claw hook 4-2 is an inclined surface. When the sliding block 4-1 is subjected to a leftward pulling force, the claw hook 4-2 generates an outward opening force.

[0041] The hinge part 4-11 between the claw hook 4-2 and the sliding sleeve 4-3 has a right angle on the inside and a rounded corner 1-9 on the outside. This ensures that after the claw hook 4-2 releases the sliding block 4-1, the sliding block 4-1 cannot swing past the axis during its free swing, thus ensuring that the shoulder of the sliding block 4-1 can be inserted into the inner hole of the claw hook 4-2.

[0042] More specifically, when the claw hook 4-2 swings inward (i.e., closes towards the axis), the right-angled plane on the inner side of its root will contact the corresponding plane on the sliding sleeve 4-3. Since both planes are right angles, a large area of ​​surface contact is formed after contact, generating mechanical interference and preventing the claw hook 4-2 from continuing to swing inward. This right-angle design fixes the maximum inward swing angle of the claw hook 4-2 to a specific value, ensuring that the hook part of the claw hook 4-2 always stays on one side of the axis (e.g., the right side of the axis) in the free state, and will not swing across the axis to the other side. Since the claw hook 4-2 cannot swing across the axis, the opening direction of its hook groove always faces outward of the axis (i.e., the direction from which the slider shoulder comes). In this way, when the sliding block 4-1 is reloaded and its shoulder moves from left to right, the inclined surface of the shoulder can smoothly contact the inner side of the claw hook 4-2, and rely on the thrust to make the claw hook 4-2 swing slightly inward (within the right-angle limit range), thereby causing the shoulder to slide into the hook groove and be hooked.

[0043] The execution unit includes a control board 5-1 and a power supply 5-2. Both the control board 5-1 and the power supply 5-2 are located inside the rear shell 1-3 and are respectively fixed on the support base 1-2. The control board 5-1 is electrically connected to the switch 3-2 and the power supply 5-2 through wires, and the power supply 5-2 is electrically connected to the push-pull electromagnet 4-6 through wires.

[0044] The working process and principle of the veterinary rapid injector provided in the embodiments of the present invention are as follows: 1. Ready and loaded status: First, remove the cap 1-5, place the syringe 2-3 (with the medication already absorbed) into the trigger cylinder 2-1, and then replace the cap 1-5. The operator pulls the sliding block 4-1 to the right (in this invention, the direction of movement away from the livestock is defined as right). The inclined surface of the shoulder of the sliding block 4-1 first contacts the inner side of the claw hook 4-2, forcing it to open outward. As the pulling continues, the shoulder of the sliding block 4-1 passes over the hook of the claw hook 4-2, and then the claw hook 4-2 retracts under its own structure or slight elasticity, hooking the shoulder of the sliding block 4-1. At the same time, the sliding block 4-1, through the claw hook 4-2, drives the sliding sleeve 4-3 to move to the right (in this invention, the direction of movement away from the livestock is defined as right) against the force of the third elastic element 4-8. During this process, under the action of the fourth elastic element 4-9, the inclined surface of the sliding rod 4-4 always presses against the steel ball 4-5, forcing the steel ball 4-5 to tend to roll outward. When the sliding sleeve 4-3 moves to the right until the steel ball 4-5 aligns with the rounded corner 1-9 of the inner hole of the support base 1-2, the steel ball 4-5 is ejected, one side engaging with the rounded corner 1-9, and the other side contacting the large-diameter cylindrical surface of the sliding rod 4-4. At this time, the sliding rod 4-4, under the action of the fourth elastic element 4-9, tends to move slightly to the left (in this invention, the direction of movement closer to the livestock is defined as left), but is held in place by the steel ball 4-5. Because the steel ball 4-5 is held between the rounded corner 1-9 of the support base 1-2 and the large-diameter cylindrical surface of the sliding rod 4-4, the sliding sleeve 4-3 is locked and cannot return to its left position. After releasing the sliding block 4-1, the sliding block 4-1 tends to move to the left under the pulling force of the second elastic element 4-7, but is firmly hooked by the closed claw hook 4-2, and the entire locking and releasing mechanism is in a locked state of "loaded" and ready to be released.

[0045] 2. Triggering and Auto-injection: The operator holds the veterinary rapid-injector, aligns the needle 2-4 with it, and quickly inserts it into the animal's injection site. As the needle 2-4 enters the animal's body, the animal's skin presses against the trigger slider 2-2. With continued injection, the trigger slider 2-2, trigger cylinder 2-1, and trigger lever 3-1 move together to the right. When trigger lever 3-1 presses against the contact of switch 3-2, switch 3-2 closes, sending a trigger signal to control panel 5-1.

[0046] Upon receiving a trigger signal, the control board 5-1 (which can be designed as a simple delay trigger circuit or implemented by a microcontroller) immediately controls the power supply 5-2 to energize the push-pull electromagnet 4-6 for a short time (e.g., 0.1-0.5 seconds). The telescopic rod of the push-pull electromagnet 4-6 quickly retracts, pulling the slide bar 4-4 to the right.

[0047] As the slide bar 4-4 moves, the diameter of the cylindrical surface in contact with the steel ball 4-5 gradually decreases (from a large-diameter cylindrical surface to a small-diameter cylindrical surface via an inclined plane). The steel ball 4-5 loses the radial support force from the large-diameter surface of the slide bar 4-4. At the same time, under the leftward thrust of the third elastic element 4-8 on the sliding sleeve 4-3, the steel ball 4-5 is squeezed inward and disengaged from the radius 1-9 constraint of the inner hole of the support seat 1-2.

[0048] Once the steel ball 4-5 is released from its constraint, the sliding sleeve 4-3 moves rapidly to the left under the strong thrust of the third elastic element 4-8. The movement of the sliding sleeve 4-3 causes the pawl hook 4-2, which is hinged to it, to move to the left as well. As the hinge point of the pawl hook 4-2 moves to the left, while the shoulder of the sliding block 4-1 is relatively fixed in the hooked position, the pawl hook 4-2 swings around the hinge point, and its hook part disengages from the shoulder of the sliding block 4-1, thereby releasing the sliding block 4-1.

[0049] The instant the sliding block 4-1 is released, the elastic potential energy of the pre-stretched second elastic element 4-7 is immediately converted into kinetic energy, violently pulling the sliding block 4-1 to slide at high speed to the left. The sliding block 4-1 strikes the push rod of the syringe 2-3, injecting all the medicine in the syringe 2-3 into the animal's muscle tissue through the needle 2-4 with great force and speed. Due to the extremely fast injection speed, the injection is usually completed before the animal exhibits any violent struggling reaction, thus ensuring the accuracy of the injection depth and dosage.

[0050] 3. Reset and reuse: After injection, the operator removes the needle 2-4 from the animal's body. When the trigger slider 2-2 disengages from the animal's body, the trigger cylinder 2-1 automatically resets forward under the thrust of the first elastic element 1-8, and the trigger rod 3-1 disengages from the switch 3-2, disengaging the switch. The circuit of the control board 5-1 and the push-pull electromagnet 4-6 returns to its initial state. The released claw hook 4-2, after the sliding sleeve 4-3 moves to its left limit position (blocked by the limit screw 24), is in a free-swinging state. Due to its special design with a right angle on the inner side of the hinge, its position facilitates the sliding shoulder of the slider to slide in during the next loading.

[0051] Before the next injection, the operator only needs to pull the sliding block 4-1 to the right again to repeat the above "loading" steps, and replace the syringe 2-3 and needle 2-4 with new medication to continue use.

[0052] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this invention disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this invention can be achieved, and this is not limited herein.

[0053] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A veterinary quick injector, characterized in that include: The outer shell includes a front shell, a support base, and a rear shell. The front shell and the rear shell are respectively connected to both sides of the support base. A support frame is provided inside the front shell, and a cap is connected to the end of the support frame away from the rear shell. An injection assembly includes a trigger cylinder, a trigger slider, a syringe and a needle. The trigger slider is slidably disposed inside a cap and connected to the trigger cylinder. The trigger cylinder is slidably disposed inside a support frame. A first elastic element is disposed between the trigger cylinder and the support frame. The syringe is disposed inside the trigger cylinder and the trigger slider, and the needle is connected to the syringe and extends out of the trigger slider. The trigger detection unit includes a trigger rod and a switch. The trigger rod is mounted on the trigger cylinder, and the switch is mounted on the support base. The locking and releasing mechanism includes a sliding block, a claw hook, a sliding sleeve, a sliding rod, a steel ball, and a push-pull electromagnet. The sliding block is slidably connected to the trigger cylinder and connected to the support frame through a second elastic element. The claw hook is hinged to the sliding sleeve. The sliding sleeve is slidably disposed within the support base and a third elastic element is disposed between the sliding sleeve and the support base. A limit hole is opened on the sliding sleeve along the circumferential direction, and the steel ball is disposed within the limit hole. The sliding rod is slidably disposed within the sliding sleeve and a fourth elastic element is disposed between the sliding rod and the sliding sleeve. The push-pull electromagnet is disposed within the rear housing, and the telescopic rod of the push-pull electromagnet is connected to the sliding rod. The execution unit includes a control board and a power supply disposed within the rear housing; When the needle pierces the animal's body and pushes the trigger slider, the trigger cylinder drives the trigger rod to trigger the switch. The control board controls the power supply to energize the push-pull electromagnet, which pulls the slide rod to move, causing the sliding sleeve to move and drive the claw hook to swing to release the sliding block. The sliding block pushes the needle to complete the injection.

2. The veterinary syringe of claim 1, wherein, The number of claw hooks is at least two, and they are evenly arranged along the circumference of the sliding block.

3. The veterinary syringe of claim 1, wherein, The part of the slide bar that contacts the steel ball has a variable diameter structure, which includes a large-diameter cylindrical surface, an inclined surface, and a small-diameter cylindrical surface.

4. The veterinary rapid injector according to claim 1, characterized in that, The hinge joint between the claw hook and the sliding sleeve has a right angle on the inside and a rounded corner on the outside, which limits the free swing angle of the claw hook after the sliding block is released.

5. The veterinary rapid injector according to claim 1, characterized in that, A shoulder is provided on the sliding block, the shoulder is held by a claw hook, and the surface of the shoulder in contact with the claw hook is an inclined surface.

6. The veterinary rapid injector according to claim 1, characterized in that, It also includes a limiter, which is mounted on the support frame to limit the movement distance of the needle tube.

7. The veterinary rapid injector according to claim 1, characterized in that, Limit screws are installed on the support base to limit the sliding distance of the sleeve.

8. The veterinary rapid injector according to claim 1, characterized in that, There are two second elastic elements. Two fixing plates are arranged radially on the sliding block. One end of the two second elastic elements hooks onto the support frame, and the other end hooks onto the fixing plate.

9. The veterinary rapid injector according to claim 1, characterized in that, The second elastic element is a tension spring, while the first, third, and fourth elastic elements are all compression springs.

10. The veterinary rapid injector according to claim 1, characterized in that, The support base has an inner hole, and the part of the inner hole that contacts the steel ball has a rounded transition, the radius of which is the same as the radius of the steel ball.

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