Animal disease prevention and vaccination injection device
By designing an animal disease prevention injection device, the problem of difficulty in controlling injection depth and drug dosage was solved, thereby improving the safety and efficiency of the injection process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN INSTITUTE OF QUALITY & SAFETY INSPECTION & RESEARCH (SHENZHEN CENTER FOR ANIMAL DISEASE CONTROL & PREVENTION)
- Filing Date
- 2025-01-22
- Publication Date
- 2026-07-21
AI Technical Summary
The existing animal vaccination process is difficult to control animal cooperation, the injection depth and drug dosage are not easy to adjust, the operation is complicated and there are great safety risks.
An animal disease prevention injection device was designed, including a syringe body, a pusher, a gripper, and a limiting component. The exposed length of the injection head is adjusted by the movement and rotation mechanism of the limiting component, and the injection depth and dosage are visualized and controlled by a transparent shell and a graduated groove.
It enables flexible adjustment of injection depth and drug dosage, improving the safety and efficiency of the operation, and reducing animal discomfort and operator workload.
Smart Images
Figure CN224523333U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of injection devices, specifically to an animal disease prevention injection device. Background Technology
[0002] In current animal vaccination procedures, traditional syringes are typically used. Due to the different temperaments of various animals, it is often difficult to control their cooperation during injection. Furthermore, the injection depth and dosage vary depending on the size of the animal. This makes the procedure complex and inefficient for operators, and poses significant safety risks, potentially harming the animals. Utility Model Content
[0003] This application addresses the aforementioned shortcomings of the prior art by providing an animal disease prevention injection device to solve at least one of the above-mentioned technical problems. The specific solution is as follows:
[0004] An animal disease prevention injection device includes a syringe body, a pusher, a grip, and a limiting component. One end of the syringe body is provided with an injection head, and the grip is located on the end of the syringe body away from the injection head; one end of the pusher is movably disposed within the syringe body.
[0005] The limiting component includes a protective shell and a tightening mechanism. The protective shell is movably fitted onto the end of the syringe body near the injection head. The tightening mechanism is located on the end of the protective shell near the grip. The protective shell is fixed to the syringe body at different positions from the tip of the injection head by the tightening mechanism to adjust the length of the injection head exposed relative to the protective shell.
[0006] In some specific embodiments, a blocking element is provided on one end of the syringe body near the injection head; the blocking element is used to prevent the limiting component from dislodging from the syringe body.
[0007] In some specific embodiments, the axial length of the protective shell on the syringe body is greater than the length of the injection head. By setting the axial length of the protective shell to be greater than the length of the injection head, the protective shell can slide a certain distance along the syringe body towards the injection head, completely blocking the injection head in the axial direction, thus achieving locking and protection of the injection head. In practical use, it also prevents the injection head from coming into contact with or being contaminated by other objects when not in use, keeping the injection head clean and hygienic.
[0008] In some specific embodiments, the protective shell includes a transparent shell layer; and / or the protective shell has an observation window for observing the injection head. By providing a transparent shell layer or an observation window on the protective shell, operators can easily observe the injection process of the injection head directly through the protective shell or the observation window, facilitating adjustments to the injection position of the injection head during the injection operation.
[0009] In some specific embodiments, a numerical mark indicating the length of the protective shell protruding from one end of the syringe body within the movement range of the limiting component is provided on the syringe body. In practical applications, the edge of the limiting component facing the gripping part on the syringe body can correspond to the numerical mark. By providing a numerical mark on the syringe body, the operator can instantly determine the movement distance of the protective shell by comparing it with the numerical mark during use, and further obtain the current maximum injection depth of the injection head, thereby achieving adjustable injection head depth.
[0010] In some specific embodiments, the outer surface of part or all of the grip portion is provided with an anti-slip texture structure; and / or the push portion includes a push handle, the outer surface of which is provided with an anti-slip texture structure.
[0011] In some specific embodiments, an injection control device is also included, which is disposed on the outer or inner wall of the syringe body at the end away from the injection head; the injection control device includes a fixing member and a sliding member, and the fixing member is fixedly connected to the outer or inner wall of the syringe body.
[0012] The fixing component has a sliding groove with multiple graduated grooves. The sliding component slides along the sliding groove, with one end fixed in one of the graduated grooves and the other end protruding relative to the syringe body away from the injection head to limit the pushing distance of the delivery unit. In a specific application, when one end of the sliding component protrudes relative to the syringe body away from the injection head, the delivery handle of the delivery unit will abut against the sliding component as the operator pushes it towards the injection head. This limits the pushing distance of the delivery unit, preventing it from reaching the bottom of the syringe body to deliver all the medication. Thus, the dosage of the injected medication can be controlled.
[0013] Furthermore, by setting graduated grooves corresponding to different drug dosages in the sliding groove, a more visual reference can be provided for drug dosage control, ensuring the accuracy of drug dosage during animal disease prevention injections. Simultaneously, the convenient adjustment of the injection dosage via the graduated grooves allows for the same dosage to be injected into the same animals or animals with the same condition, making the injection process repeatable and standardized. This helps ensure the overall unified management of animal disease prevention work.
[0014] In some specific embodiments, the tightening mechanism includes a tightening kit and a connecting ring, the inner diameter of which is greater than or equal to the outer diameter of the syringe body. The connecting ring is disposed on the protective shell near the gripping part and is sleeved on the syringe body. The tightening kit is sleeved on the connecting ring and is used to adjust the tightness of the connection between the connecting ring and the syringe body. In practical applications, the tightening kit and the connecting ring may be provided with mutually mating threaded structures, allowing the operator to tighten the tightening kit onto the connecting ring by rotation.
[0015] In some specific embodiments, at least one sliding limiting block is protruding from the syringe body; a through groove with a cross-sectional shape matching the sliding limiting block on the axis of the syringe body is provided on the side of the tightening mechanism facing the syringe body;
[0016] The sliding limit block is used to engage with a position other than the through slot on the tightening mechanism to restrict the sliding of the tightening mechanism on the syringe body, or to allow the tightening mechanism to slide through the area where the sliding limit block is located via the through slot on the tightening mechanism. In practical applications, sliding limit blocks can be set at different positions along the length of the syringe body, and multiple movable areas of the limiting components can be divided on the syringe body using the sliding limit blocks as constraints. Since the tightening mechanism is essentially sleeved on the syringe body and can rotate relative to the syringe body, when the operator needs to move the tightening mechanism from one movable area to another, the tightening mechanism can be rotated so that the through slot on the tightening mechanism corresponds to the position where the sliding limit block is located, thereby moving the tightening mechanism from one movable area to an adjacent movable area.
[0017] In some specific embodiments, at least one elastic element is provided on the syringe body; the elastic element is used to protrude relative to the outer surface of the syringe body when pressed an odd number of times, and to be flush with or recessed relative to the outer surface of the syringe body when pressed an even number of times, so as to adjust the size of the movable area of the limiting component on the syringe body.
[0018] Beneficial Effects: This application provides an animal disease prevention injection device, including a syringe body, a pushing part, a holding part, and a limiting component. The limiting component includes a protective shell and a tightening mechanism. The protective shell is movably fitted onto the syringe body near the injection head, and the tightening mechanism is located on the protective shell near the holding part. The protective shell is fixed to the syringe body at different positions from the tip of the injection head by the tightening mechanism to adjust the length of the injection head exposed relative to the protective shell. By setting an adjustable limiting component, the injection depth of the injection head can be flexibly adjusted, preventing excessive injection depth from harming the animal. Furthermore, after injection, the protective shell can be further adjusted to cover the injection head, locking the injection head and preventing accidental puncture wounds to operators or other objects. The overall structure is simple, easy to operate, and effectively improves the efficiency and safety of animal disease prevention injection processes. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this application;
[0021] Figure 2 This is another schematic diagram of the overall structure of this application;
[0022] Figure 3 This is a side view schematic diagram of this application;
[0023] Figure 4 This is a side view schematic diagram of one usage state of this application;
[0024] Figure 5 This is a schematic diagram of one usage state of this application;
[0025] Figure 6 This is a schematic diagram illustrating another usage configuration of this application;
[0026] Figure 7 This is a schematic diagram of the state of the rotary tightening mechanism in this application;
[0027] Figure 8 This is a schematic diagram of the state of the movable tightening mechanism in this application;
[0028] Figure 9 This is a schematic diagram of one structure of the tightening mechanism in this application;
[0029] Figure 10 This is a schematic diagram of another structure of the tightening mechanism in this application.
[0030] The reference numerals in the attached figures are as follows: 1-syringe body; 11-injection head; 12-blocking component; 13-sliding limit block; 14-elastic component; 15-numerical mark; 2-push part; 21-push handle; 3-grip part; 31-anti-slip textured structure; 4-limiting component; 41-protective shell; 411-observation window; 42-tightening mechanism; 421-tightening kit; 422-connecting ring; 423-through groove; 5-injection control device; 51-fixing component; 52-sliding component. Detailed Implementation
[0031] The following will clearly and completely describe the concept, specific structure and technical effects of this application in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of this application.
[0032] Various embodiments of this application will be described more fully below. This application may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of this application to the specific embodiments disclosed herein, but rather this application should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of this application.
[0033] In the following, the terms “comprising” or “may include” as used in the various embodiments of this application indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in the various embodiments of this application, the terms “comprising,” “having,” and their cognates are intended only to indicate a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of features, numbers, steps, operations, elements, components, or combinations of the foregoing.
[0034] In various embodiments of this application, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.
[0035] The terms used in the various embodiments of this application (such as "first," "second," etc.) may modify various constituent elements in the various embodiments, but do not limit the corresponding constituent elements. For example, the above terms do not limit the order and / or importance of the elements. The above terms are only used for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.
[0036] It should be noted that, in this application, unless otherwise explicitly specified and defined, terms such as "installation," "connection," and "fixation" 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 can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0037] In this application, those skilled in the art should understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of describing this application and simplifying the description, and are not intended to 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 of this application.
[0038] The terminology used in the various embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application pertain. The terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this application.
[0039] Example
[0040] This embodiment provides an animal disease prevention injection device, the specific solution of which is as follows:
[0041] An animal disease prevention injection device includes a syringe body 1, a pusher 2, a gripper 3, and a limiting component 4. One end of the syringe body 1 is provided with an injection head 11, and the gripper 3 is located on the end of the syringe body 1 away from the injection head 11; one end of the pusher 2 is movably disposed within the syringe body 1.
[0042] The limiting component 4 includes a protective shell 41 and a tightening mechanism 42. The protective shell 41 is movably fitted onto the end of the syringe body 1 near the injection head 11. The tightening mechanism 42 is disposed on the end of the protective shell 41 near the gripping part 3. The protective shell 41 is fixed to the syringe body 1 at different positions from the tip of the injection head 11 by the tightening mechanism 42 to adjust the length of the injection head 11 exposed relative to the protective shell 41. Figure 1 As shown.
[0043] In some specific embodiments, a blocking member 12 is provided on one end of the syringe body 1 near the injection head 11; the blocking member 12 is used to prevent the limiting component 4 from dislodging from the syringe body 1.
[0044] In some specific embodiments, the length of the protective shell 41 in the axial direction of the syringe body 1 is greater than the length of the injection head 11. By setting the length of the protective shell 41 in the axial direction of the syringe body 1 to be greater than the length of the injection head 11, the protective shell 41 can completely cover the injection head 11 in the axial direction after sliding a certain distance along the syringe body 1 towards the injection head 11, thereby achieving locking and protection of the injection head 11. In actual use, it can also prevent the injection head 11 from coming into contact with or being contaminated by other objects when not in use, keeping the injection head 11 clean and hygienic.
[0045] In some specific embodiments, the protective shell 41 includes a transparent shell layer; and / or the protective shell 41 has an observation window 411 for observing the injection head 11. By providing a transparent shell layer or opening an observation window 411 on the protective shell 41, the operator can directly observe the injection status of the injection head 11 through the protective shell 41 or through the observation window 411, which facilitates the adjustment of the injection position of the injection head 11 during the injection operation.
[0046] In some specific embodiments, a numerical mark 15 is provided on the syringe body 1 in the area within the movement range of the limiting component 4, indicating the length of the protective shell 41 exposed relative to one end of the syringe body 1. In practical applications, the edge of the limiting component 4 facing the gripping part 3 on the syringe body 1 can correspond to the numerical mark 15. By providing the numerical mark 15 on the syringe body 1, the operator can instantly determine the movement distance of the protective shell 41 by comparing it with the numerical mark 15 during use, and further obtain the current maximum injection depth of the injection head 11, thereby realizing the adjustability of the injection head 11 depth.
[0047] In some specific embodiments, an anti-slip textured structure 31 is provided on part or all of the outer surface of the gripping part 3; and / or the pushing part 2 includes a pushing handle 21, and an anti-slip textured structure 31 is provided on part or all of the outer surface of the pushing handle 21. By providing an anti-slip textured structure 31 on the surface of the gripping part 3, the operator can hold the injection device more stably for operation.
[0048] In some specific embodiments, an injection control device 5 is also provided on the outer or inner wall of the syringe body 1 at the end away from the injection head 11; the injection control device 5 includes a fixing member 51 and a sliding member 52, and the fixing member 51 is fixedly connected to the outer or inner wall of the syringe body 1.
[0049] The fixing member 51 is provided with a sliding groove, and the sliding groove is provided with multiple scale grooves. The sliding member 52 is used to slide along the sliding groove. One end of the sliding member 52 is fixed in one of the scale grooves, and the other end protrudes relative to the end of the syringe body 1 away from the injection head 11 to limit the pushing distance of the pushing part 2. In a specific application, when one end of the sliding member 52 protrudes relative to the end of the syringe body 1 away from the injection head 11, when the operator operates the pushing handle 21 of the pushing part 2 to push towards the end where the injection head 11 is located, the pushing handle 21 will abut against the sliding member 52. This makes the sliding member 52 limit the pushing distance of the pushing part 2, and the pushing part 2 cannot be pushed to the bottom of the syringe body 1 to push all the medicine. Thus, the dosage of the injected medicine can be controlled.
[0050] Furthermore, by setting graduated grooves corresponding to different drug dosages in the sliding groove, a more visual reference can be provided for drug dosage control, ensuring the accuracy of drug dosage during animal disease prevention injections. Simultaneously, the convenient adjustment of the injection dosage via the graduated grooves allows for the same dosage to be injected into the same animals or animals with the same condition, making the injection process repeatable and standardized. This helps ensure the overall unified management of animal disease prevention work.
[0051] In some specific embodiments, the tightening mechanism 42 includes a tightening kit 421 and a connecting ring 422. The inner diameter of the connecting ring 422 is greater than or equal to the outer diameter of the syringe body 1. The connecting ring 422 is disposed on the protective shell 41 near the gripping part 3 and is sleeved on the syringe body 1. The tightening kit 421 is sleeved on the connecting ring 422 and is used to adjust the tightness of the connection between the connecting ring 422 and the syringe body 1. In practical applications, the tightening kit 421 and the connecting ring 422 may be provided with mutually mating threaded structures, allowing the operator to tighten the tightening kit 421 onto the connecting ring 422 by rotation. Figure 9As shown. The structure of the tightening mechanism 42 can also be as follows: Figure 10 As shown, tightening is achieved by setting a rotating handle.
[0052] In some specific embodiments, at least one sliding limiting block 13 protrudes from the syringe body 1; the tightening mechanism 42 is provided with a through groove 423 on the side facing the syringe body 1, the through groove 423 having a cross-sectional shape that matches the sliding limiting block 13 on the axis of the syringe body 1, such as... Figure 8 and Figure 9 As shown; it should be noted that this application does not specifically limit the number and shape of the through slot 423 and the sliding limit block 13, and users can set them according to actual needs.
[0053] The sliding limit block 13 is used to engage with a position other than the through slot 423 on the tightening mechanism 42 to restrict the sliding of the tightening mechanism 42 on the syringe body 1, or to allow the tightening mechanism 42 to slide through the through slot 423 on the tightening mechanism 42 to pass through the area where the sliding limit block 13 is located. In practical applications, the sliding limit block 13 can be set at different lengths of the syringe body 1, and multiple movable areas of the limiting components 4 can be divided on the syringe body 1 by using the sliding limit block 13 as a constraint. Since the tightening mechanism 42 is essentially sleeved on the syringe body 1 and can rotate relative to the syringe body 1, when the operator needs to move the tightening mechanism 42 from one movable area to another movable area, the tightening mechanism 42 can be rotated so that the through slot 423 on the tightening mechanism 42 corresponds to the position where the sliding limit block 13 is located, thereby moving the tightening mechanism 42 from one movable area to another adjacent movable area. The process of moving and rotating the tightening mechanism 42 is as follows: Figure 7 and Figure 8 As shown.
[0054] In one specific embodiment, the sliding limiting block 13 may include a first limiting block and a second limiting block, wherein the second limiting block is closer to the injection head 11 than the first limiting block, and a first movable area is formed between the second limiting block and the blocking member 12 disposed on one end edge of the syringe body 1, such as... Figure 2 As shown in region A, a second movable area is formed between the second limiting block and the first limiting block, as follows: Figure 2 As shown in area B. When the limiting component 4 is in the first movable area, the exposed length of the protective shell 41 relative to the syringe body 1 can cover the entire length of the injection head 11, thereby achieving overall locking and protection of the injection head 11. This prevents the injection head 11 from pricking the operator or others when not in use. Figure 1 , Figure 2 and Figure 3As shown; when the limiting component 4 slides in the second movable area, the exposed length of the protective shell 41 relative to the syringe body 1 can partially cover the length of the injection head 11, such as... Figure 4 , Figure 5 and Figure 6 As shown, the protective shell 41 can reduce the maximum injection depth of the injection head by blocking the injection head 11.
[0055] During an animal vaccination procedure, as the operator inserts the injection head 11 into the animal's body and continues to penetrate deeper, the protective shell 41 abuts against the animal, preventing the injection head 11 from being fully inserted. This allows for control of the injection depth, preventing injury from excessively deep injections and reducing discomfort for the animal. The operator can adjust the length of the protective shell 41 that covers the injection head 11 according to the actual injection depth requirements.
[0056] In some specific embodiments, at least one elastic element 14 is provided on the syringe body 1; the elastic element 14 is used to protrude relative to the outer surface of the syringe body 1 when pressed an odd number of times, and to be flush with or recessed relative to the outer surface of the syringe body 1 when pressed an even number of times, so as to adjust the size of the movable area of the limiting component 4 on the syringe body 1. In practical applications, such as Figure 5 and Figure 6 As shown, the elastic element 14 can be a pressable elastic button. The operator can press the elastic button as needed to switch between a state of protrusion, flushness, and concavity relative to the outer surface of the syringe body 1, so that the limiting component 4 can slide smoothly on the syringe body 1 or be limited by the protruding elastic element 14. In a specific embodiment, the elastic element 14 and the sliding limiting block 13 can be used in conjunction.
[0057] This application provides an animal disease prevention injection device. By incorporating a limiting component whose position can be adjusted relative to the syringe body, the injection depth of the injection head can be flexibly adjusted, preventing excessive injection depth from harming the animal. Furthermore, after injection, the protective shell can be further adjusted to completely cover the injection head, locking it in place and preventing accidental puncture wounds to operators or other objects. The overall structure is simple and easy to operate, making the animal disease prevention injection process more efficient and safer, effectively reducing animal discomfort and operator workload.
[0058] The above is a detailed description of the preferred embodiments of this application. However, the invention of this application is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. An animal disease prevention injection device, characterized in that, Includes a syringe body, a pusher, a gripper, and a limiting assembly; An injection head is provided at one end of the syringe body, and a gripping part is provided at the end of the syringe body away from the injection head; one end of the pushing part is movably disposed in the syringe body. The limiting component includes a protective shell and a tightening mechanism. The protective shell is movably fitted onto the syringe body at one end near the injection head. The tightening mechanism is located on the protective shell at one end near the gripping part. The protective shell is fixed to the syringe body at different positions from the tip of the injection head by the tightening mechanism to adjust the length of the injection head exposed relative to the protective shell.
2. The animal disease prevention injection device according to claim 1, characterized in that, A blocking element is provided protruding from one end of the syringe body near the injection head; The blocking member is used to prevent the limiting component from dislodging from the syringe body.
3. The animal disease prevention injection device according to claim 1, characterized in that, The length of the protective shell along the axial direction of the syringe body is greater than the length of the injection head.
4. The animal disease prevention injection device according to claim 1, characterized in that, The protective shell includes a transparent shell layer; and / or The protective shell has an observation window for observing the injection head.
5. The animal disease prevention injection device according to claim 1, characterized in that, The area on the syringe body within the movement range of the limiting component is marked with a numerical mark indicating the length of the protective shell exposed relative to one end of the syringe body.
6. The animal disease prevention injection device according to claim 1, characterized in that, The outer surface of some or all of the gripping parts is provided with an anti-slip textured structure; and / or The pushing part includes a pushing handle, and the anti-slip texture structure is provided on part or all of the outer surface of the pushing handle.
7. The animal disease prevention injection device according to claim 1, characterized in that, It also includes an injection control device disposed on the outer or inner wall of the syringe body at the end away from the injection head; the injection control device includes a fixing member and a sliding member, the fixing member being fixedly connected to the outer or inner wall of the syringe body; The fixing member is provided with a sliding groove, and the sliding groove is provided with multiple scale grooves; the sliding member is used to slide along the sliding groove, one end of the sliding member is fixed in one of the scale grooves, and the other end is used to protrude from the end of the syringe body away from the injection head, so as to limit the pushing distance of the pushing part.
8. The animal disease prevention injection device according to claim 1, characterized in that, The tightening mechanism includes a tightening kit and a connecting ring, wherein the inner diameter of the connecting ring is greater than or equal to the outer diameter of the syringe body; The connecting ring is disposed on one end of the protective shell near the grip and is sleeved on the syringe body; the tightening kit is sleeved on the connecting ring and is used to adjust the tightness of the connection between the connecting ring and the syringe body.
9. The animal disease prevention injection device according to claim 1, characterized in that, At least one sliding limit block is protruding from the main body of the syringe; The tightening mechanism has a through groove on the side facing the syringe body, which matches the cross-sectional shape of the sliding limiting block on the axis of the syringe body. The sliding limiting block is used to engage with a position other than the through groove on the tightening mechanism to restrict the sliding of the tightening mechanism on the syringe body, or to allow the tightening mechanism to slide through the area where the sliding limiting block is located via the through groove on the tightening mechanism.
10. An animal disease prevention injection device according to claim 1, characterized in that, At least one elastic element is provided on the main body of the syringe; The elastic element is used to protrude relative to the outer surface of the syringe body when pressed an odd number of times, and to be flush with or recessed relative to the outer surface of the syringe body when pressed an even number of times, so as to adjust the size of the movable area of the limiting component on the syringe body.