Veterinary syringe

Abstract

The utility model relates to the field of veterinary medical treatment, in particular to a veterinary injector which comprises an injection needle, a needle head is arranged at one end of the injection needle, a piston head is arranged in the injection needle in a sliding mode, the piston head is driven by a liquid discharging mechanism, and the liquid discharging mechanism comprises a handle, a driving rod and a driving motor. One end of the driving rod is fixedly connected with the piston head, and the other end of the driving rod penetrates out of the fixed shell; a driving cylinder is arranged in the fixed shell, and the driving motor is used for driving the driving cylinder so that the driving rod can move in the axial direction of the injection needle; the handle is provided with a starting button and an adjusting knob, a battery is arranged at the end, away from the fixing shell, of the handle, and the starting button, the adjusting knob and the driving motor are electrically connected with the battery through a controller. The automatic quantitative medicine injection device can achieve automatic quantitative medicine injection, reduce the labor intensity of veterinarians, and ensure the medicine effect and the safety of animals.

Description

Technical Field

[0001] The utility model relates to the field of veterinary medicine, in particular to a veterinary syringe. Background Art

[0002] A veterinarian is a doctor who prevents, diagnoses and treats diseases in animals. Specifically, a veterinarian is a type of worker who uses medical methods to promote the coordination between the animal body, microorganisms and the natural environment.

[0003] In the course of their work, veterinarians often need to inject liquid medicine into animals to prevent and treat diseases. Syringes on the market generally inject liquid medicine into animals by manually pulling out the injection rod. For example, in places with many animals such as rural areas and pastures, veterinarians need to perform injection operations many times. Repeated pulling and pulling for a long time can easily cause soreness in the veterinarian's hands, reducing the veterinarian's work efficiency. In addition, traditional syringes do not have the function of quantitative injection. Veterinarians need to control the injection amount of vaccines for individual poultry based on personal experience. When the dosage is insufficient, the drug cannot play an effective role; when the dosage is too much, it is easy to cause the animal to die from excessive dosage. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a veterinary syringe, which can realize automatic quantitative injection of drugs, reduce the labor intensity of veterinarians, ensure the effect of drugs and ensure the safety of animals.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A veterinary syringe comprises an injection needle, one end of which is provided with a needle head, a piston head is slidably provided inside the injection needle, the piston head is driven by a liquid discharge mechanism, and the liquid discharge mechanism comprises a handle, a drive rod and a drive motor.

[0007] A fixed shell is provided at one end of the handle, and the fixed shell is threadedly connected to an end of the injection needle away from the needle head, so that the fixed shell is connected to the injection needle, one end of the driving rod is fixedly connected to the piston head, and the other end passes through the fixed shell, and the driving rod is slidably connected to the fixed shell;

[0008] A driving cylinder is arranged in the fixed shell, the driving cylinder is threadedly sleeved outside the driving rod, and the driving cylinder is rotatably connected to the fixed shell;

[0009] The driving motor is used to drive the driving cylinder so that the driving rod can move along the axial direction of the injection needle;

[0010] The handle is provided with a start button and an adjustment knob, a battery is provided at one end of the handle away from the fixed shell, and the start button, the adjustment knob and the drive motor are electrically connected to the battery through a controller.

[0011] Furthermore, one end of the driving cylinder is rotatably connected to the fixed shell, and the other end is fixedly sleeved with a first gear, the driving motor is fixedly arranged in the fixed shell, and the output shaft of the driving motor is provided with a second gear meshing with the first gear.

[0012] Furthermore, a liquid medicine bottle is fixedly arranged at one end of the fixed shell away from the handle, and the liquid medicine bottle is conductively connected to one end of the injection needle close to the needle tip through a catheter;

[0013] A first one-way valve is disposed on the end surface of the injection needle close to one end of the needle head, and the catheter is detachably connected to the first one-way valve so that the drug solution in the catheter can only flow into the injection needle;

[0014] A second one-way valve is arranged on the end surface of the injection needle close to one end of the needle head, and the needle head is connected to the second one-way valve via a joint so that the medicine in the injection needle can only be discharged from the needle head, and one end of the joint is fixedly connected to the needle head, and the other end is detachably connected to the second one-way valve.

[0015] Furthermore, it also includes a fixing frame, which includes an adjustment frame, a sliding sleeve and a fixing ring.

[0016] First connecting plates are fixedly disposed on both sides of the adjusting frame, and second connecting plates are fixedly disposed on both sides of the sliding sleeve, respectively. The first connecting plate and the second connecting plate on the same side are rotatably connected, and the first connecting plate and the second connecting plate on one side are fixed by locking screws to limit the relative rotation of the first connecting plate and the second connecting plate;

[0017] The two sides of the sliding sleeve are connected to the fixing ring through elastic telescopic rods respectively, and the sliding sleeve and the fixing ring can be slidably mounted outside the injection needle. A handle screw is threaded through the fixing ring, and the handle screw can abut against the outer wall of the injection needle to limit the sliding of the fixing ring.

[0018] Furthermore, the first connecting plate on one side is evenly distributed with a plurality of adjustment holes, and the second connecting plate is provided with a threaded hole. The locking screw slides through the adjustment hole and then is threaded into the threaded hole to limit the current angle between the first connecting plate and the second connecting plate.

[0019] Furthermore, a protective rubber layer is fixedly provided on a side of the adjustment frame facing away from the sliding sleeve.

[0020] Furthermore, a notch is provided on one side of the adjusting frame, and the two first connecting plates are fixedly connected to two sides of one end of the adjusting frame close to the notch.

[0021] The beneficial effects of the utility model are:

[0022] 1. Under the action of the driving motor, the driving cylinder rotates. Since the driving cylinder is threadedly sleeved outside the driving rod, and the driving rod is slidably connected to the fixed shell, the driving cylinder can drive the driving rod to move along the axial direction of the driving cylinder to drive the piston head, thereby realizing automatic injection of the drug. There is no need for the veterinarian to push and pull repeatedly, which effectively reduces the labor intensity of the veterinarian and improves work efficiency; the adjustment knob can adjust the number of revolutions of the driving motor after each start, so that the piston head can move a corresponding distance each time. When the start button is pressed once, the controller controls the driving motor to rotate a preset number of revolutions according to the signal of the start button, so that the piston head can move quantitatively, ensuring the accuracy of the dosage, ensuring the effect of the drug and ensuring the safety of the animal.

[0023] 2. In animal injections, different injection types require different syringe angles. For example, in intramuscular injections, the syringe is inserted vertically into the muscle tissue; in subcutaneous injections, the insertion angle should not exceed 45 degrees. The present invention provides an angle-adjustable adjustment frame to enable the needle to puncture at a desired angle to accommodate different types of injections. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a veterinary syringe according to a preferred embodiment of the utility model.

[0025] Figure 2 It is a schematic structural diagram of a discharge mechanism of a veterinary syringe according to a preferred embodiment of the utility model.

[0026] Figure 3 It is a schematic diagram of the needle structure of a veterinary syringe in a preferred embodiment of the utility model.

[0027] Figure 4 The utility model is a schematic diagram of a sliding sleeve structure of a veterinary syringe in a preferred embodiment.

[0028] Figure 5 It is a schematic diagram of the fixing ring structure of a veterinary syringe according to a preferred embodiment of the utility model.

[0029] Figure 6 The utility model is a schematic diagram of a locking screw structure of a veterinary syringe according to a preferred embodiment of the utility model.

[0030] Figure 7 It is a structural schematic diagram of the first connecting plate of a veterinary syringe in a preferred embodiment of the utility model.

[0031] Figure 8 It is a schematic diagram of the structure of an adjustment frame of a veterinary syringe according to a preferred embodiment of the utility model.

[0032] In the figure, 1-injection needle, 101-slide bar, 11-needle, 12-piston head, 111-connector, 13-first one-way valve, 14-second one-way valve, 2-handle, 201-start button, 202-adjusting knob, 203-reset button, 21-fixed shell, 211-limiting member, 22-driving cylinder, 221-first gear, 3-driving rod, 301-slide groove, 31-driving motor, 311-second gear, 4-battery, 5-medicine bottle, 51-catheter, 61-adjusting frame, 611-protective rubber layer, 612-notch, 62-sliding sleeve, 621-elastic telescopic rod, 63-fixing ring, 64-first connecting plate, 641-adjusting hole, 65-second connecting plate, 651-threaded hole, 66-handle screw, 67-groove, 68-scale, 7-locking screw. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] Please also see Figures 1 to 8 A veterinary syringe according to a preferred embodiment of the utility model comprises an injection needle 1 and a fixing frame.

[0037] A needle head 11 is arranged at one end of the injection needle 1, and a piston head 12 is slidably arranged inside the injection needle 1, and the piston head 12 is driven by a liquid discharge mechanism.

[0038] like Figure 1 and Figure 2 As shown, the liquid discharge mechanism includes a handle 2 , a drive rod 3 and a drive motor 31 .

[0039] A fixed shell 21 is provided at one end of the handle 2, and the fixed shell 21 is threadedly connected to the end of the injection needle 1 away from the needle head 11, so that the fixed shell 21 is connected to the injection needle 1, one end of the driving rod 3 is fixedly connected to the piston head 12, and the other end passes through the fixed shell 21, and the driving rod 3 is slidably connected to the fixed shell 21. In this embodiment, a limit member 211 is fixedly provided in the fixed shell 21, and a slide groove 301 is recessed on one side of the driving rod 3. The limit member 211 is embedded in the slide groove 301 and is slidably connected to the slide groove 301, so as to realize the sliding connection between the driving rod 3 and the fixed shell 21.

[0040] A driving cylinder 22 is arranged in the fixed shell 21. The driving cylinder 22 is threadedly sleeved outside the driving rod 3, and the driving cylinder 22 is rotatably connected to the fixed shell 21. One end of the driving cylinder 22 is rotatably connected to the fixed shell 21 through a bearing.

[0041] The driving motor 31 is used to drive the driving cylinder 22 so that the driving rod 3 can move along the axial direction of the injection needle 1. In this embodiment, one end of the driving cylinder 22 is rotatably connected to the fixed shell 21, and the other end is fixedly sleeved with a first gear 221. The driving motor 31 is fixedly arranged in the fixed shell 21, and the output shaft of the driving motor 31 is provided with a second gear 311 meshing with the first gear 221. The driving motor 31 is a servo motor, and the driving motor 31 is provided with a reducer to achieve self-locking of the driving cylinder 22 to the driving rod 3. In this embodiment, the moving distance of the piston head 12 is determined according to the number of revolutions of the driving motor 31, and is driven according to the inner diameter of the injection needle 1, and the amount of liquid medicine discharged by the injection needle 1 after each movement of the piston head 12.

[0042] The handle 2 is provided with a start button 201 and an adjustment knob 202, and a battery 4 is provided at one end of the handle 2 away from the fixed shell 21. The start button 201, the adjustment knob 202 and the drive motor 31 are electrically connected to the battery 4 through a controller. The controller of this embodiment can be a control module composed of a single chip, and the battery 4 is detachably connected to the handle 2 through a shell, and the shell is provided with a charging interface for the battery 4.

[0043] Under the action of the driving motor 31, the driving cylinder 22 rotates. Since the driving cylinder 22 is threadedly sleeved on the outside of the driving rod 3, and the driving rod 3 is slidably connected to the fixed shell 21, the driving cylinder 22 can drive the driving rod 3 to move along the axial direction of the driving cylinder 22 to drive the piston head 12, thereby realizing automatic injection of the drug. There is no need for the veterinarian to push and pull repeatedly, which effectively reduces the labor intensity of the veterinarian and improves work efficiency; the adjustment knob 202 can adjust the number of revolutions of the driving motor 31 after each start, so that the piston head 12 can move a corresponding distance each time. After the start button 201 is pressed once, the controller controls the driving motor 31 to rotate a preset number of revolutions according to the signal of the start button 201, so that the piston head 12 can move quantitatively, thereby ensuring the accuracy of the dosage, ensuring the effect of the drug and ensuring the safety of the animal.

[0044] like Figure 1 , Figure 2 , Figure 3 As shown, a medicine bottle 5 is fixedly arranged at one end of the fixed shell 21 away from the handle 2, and the medicine bottle 5 is conductively connected to the end of the injection needle 1 close to the needle head 11 through a conduit 51. The medicine bottle 5 of this embodiment is provided with a bottle mouth, and a switch cover is threadedly arranged at the bottle mouth.

[0045] A first one-way valve 13 is disposed on the end surface of the injection needle 1 close to the needle head 11 , and the catheter 51 is detachably connected to the first one-way valve 13 so that the drug solution in the catheter 51 can only flow into the injection needle 1 .

[0046] A second one-way valve 14 is provided on the end surface of the injection needle 1 close to one end of the needle head 11. The needle head 11 is connected to the second one-way valve 14 through a connector 111 so that the liquid in the injection needle 1 can only be discharged from the needle head 11. One end of the connector 111 is fixedly connected to the needle head 11, and the other end is detachably connected to the second one-way valve 14.

[0047] In this embodiment, one end of the first one-way valve 13 is connected to the injection needle 1, and the other end is threadedly connected to the catheter 51. One end of the second one-way valve 14 is connected to the injection needle 1, and the other end is threadedly connected to the needle seat of the needle head 11.

[0048] This embodiment is also provided with a reset button 203. After pressing the reset button 203, the driving motor 31 is reversed, and the piston head 12 moves away from the needle 11, so that negative pressure is generated in the injection needle 1, and the first one-way valve 13 is in a conducting state. The drug liquid in the drug liquid bottle 5 enters the injection needle 1 through the conduit 51 to replenish the drug liquid; at the same time, the second one-way valve 14 is in a closed state, and the joint 111 can be in a sealed state, ensuring that the drug liquid in the drug liquid bottle 5 can enter the injection needle 1.

[0049] During injection, the piston head 12 generates pressure inside the injection needle 1, the second one-way valve 14 is in an on state, and the medicine liquid in the injection needle 1 can be discharged through the needle 11; at the same time, the first one-way valve 13 is in a closed state, so that the medicine liquid in the injection needle 1 will not enter the medicine liquid bottle 5.

[0050] like Figure 1 , Figure 4 , Figure 5 As shown, the fixing frame includes an adjusting frame 61 , a sliding sleeve 62 and a fixing ring 63 .

[0051] A first connecting plate 64 is fixedly provided on both sides of the adjusting frame 61, and a second connecting plate 65 is fixedly provided on both sides of the sliding sleeve 62. The first connecting plate 64 and the second connecting plate 65 on the same side are rotatably connected, and the first connecting plate 64 and the second connecting plate 65 on one side are fixed by a locking screw 7 to limit the relative rotation of the first connecting plate 64 and the second connecting plate 65.

[0052] Both sides of the sliding sleeve 62 are connected to the fixing ring 63 through elastic telescopic rods 621, and the sliding sleeve 62 and the fixing ring 63 can be slidably mounted outside the injection needle 1. The fixing ring 63 is threaded with a handle screw 66, and the handle screw 66 can abut against the outer wall of the injection needle 1 to limit the sliding of the fixing ring 63. Figure 4 and Figure 5 As shown, two opposite sides of the outer wall of the injection needle 1 are respectively provided with slide bars 101 convexly, and the inner walls of the sliding sleeve 62 and the fixing ring 63 are respectively provided with grooves 67 slidably matched with the slide bars 101 .

[0053] Since the first one-way valve 13 is arranged on the end surface of the injection needle 1, the first one-way valve 13 will not affect the installation of the sliding sleeve 62 and the fixing ring 63. After the sliding sleeve 62 and the fixing ring 63 are sleeved on the injection needle 1, the tip of the needle 11 is aligned with the adjustment frame 61 according to the length of the needle 11, and then the handle screw 66 is tightened so that the fixing ring 63 can be fixed at the current position, thereby facilitating puncture.

[0054] The elastic telescopic rod 621 is a nested telescopic rod with two ends, and a compression spring is arranged inside the elastic telescopic rod 621. Under natural conditions, the elastic telescopic rod 621 is in an extended state. When the needle is pulled out after puncture, the adjustment frame 61 and the sliding sleeve 62 can be reset under the action of the elastic telescopic rod 621 to facilitate the next puncture.

[0055] In animal injections, different injection types require the syringe to have different angles. For example, in intramuscular injections, the syringe is inserted vertically into the muscle tissue; in subcutaneous injections, the insertion angle should not exceed 45 degrees. The present invention can enable the needle 11 to puncture at a desired angle to adapt to different types of injections by providing an angle-adjustable adjustment frame 61.

[0056] like Figure 1 , Figure 6 , Figure 7 As shown, the first connecting plate 64 on one side is evenly distributed with a plurality of adjustment holes 641, and the second connecting plate 65 is provided with a threaded hole 651. The locking screw 7 slides through the adjustment hole 641 and then is threaded into the threaded hole 651 to limit the current angle between the first connecting plate 64 and the second connecting plate 65.

[0057] According to the injection requirements, after the adjustment frame 61 is rotated to the required angle, and the threaded hole 651 is aligned with the corresponding adjustment hole 641, the locking screw 7 is slid through the adjustment hole 641 and then threaded into the threaded hole 651, so as to achieve the fixation of the first connecting plate 64 and the second connecting plate 65, thereby locking the adjustment frame 61 at the current angle. In this embodiment, the first connecting plate 64 is provided with a scale 68 to facilitate the determination of the angle of the adjustment frame 61.

[0058] In this embodiment, a protective rubber layer 611 is fixedly provided on one side of the adjustment frame 61 facing away from the sliding sleeve 62. Under the action of the protective rubber layer 611, the stability of puncture can be improved.

[0059] A notch 612 is provided on one side of the adjusting frame 61, and two first connecting plates 64 are fixedly connected to both sides of one end of the adjusting frame 61 close to the notch 612. Under the effect of the notch 612, the adjusting frame 61 can be prevented from affecting the puncture operation.

[0060] In this embodiment, the injection needle 1, the handle 2 and the fixing frame are detachable structures, which facilitates the cleaning and disinfection of the injection needle 1, the handle 2 and the fixing frame.

[0061] The veterinary syringe usage process of this embodiment is:

[0062] The end of the injection needle 1 away from the needle 11 is threadedly embedded into the fixed shell 21, and then the sliding sleeve 62 and the fixing ring 63 are sleeved on the injection needle 1. According to the length of the needle 11, the tip of the needle 11 is flush with the adjustment frame 61, and then the handle screw 66 is tightened to fix the fixing ring 63 in the current position. According to the injection requirements, after the adjustment frame 61 is rotated to the required angle, and the threaded hole 651 is aligned with the corresponding adjustment hole 641, the locking screw 7 is slid through the adjustment hole 641 and then threaded into the threaded hole 651 to lock the adjustment frame 61 at the current angle.

[0063] By pressing the reset button 203, the driving motor 31 reverses and the piston head 12 moves away from the needle 11, so that negative pressure is generated in the injection needle 1. The first one-way valve 13 is in a conducting state, and the drug liquid in the drug liquid bottle 5 enters the injection needle 1 through the catheter 51 to replenish the drug liquid. After the drug liquid is replenished, the reset button 203 is released.

[0064] After the adjustment frame 61 is pressed toward the puncture site of the animal, the injection needle 1 is pushed by the handle 2 to perform puncture. After the puncture is in place, the start button 201 is pressed once, the drive motor 31 rotates forward, and the piston head 12 moves toward the needle 11. The piston head 12 exerts pressure on the injection needle 1, and the second one-way valve 14 is in a conducting state, so that the liquid medicine in the injection needle 1 can be discharged through the needle 11; at the same time, the first one-way valve 13 is in a closed state, so that the liquid medicine in the injection needle 1 will not enter the liquid medicine bottle 5.

[0065] After the injection is completed, the needle 11 is pushed out, and under the action of the elastic telescopic rod 621, the adjustment frame 61 and the sliding sleeve 62 can be reset to facilitate the next puncture.

Claims

1. A veterinary syringe, characterized in that: The invention comprises an injection needle (1), wherein one end of the injection needle (1) is provided with a needle head (11), a piston head (12) is slidably provided inside the injection needle (1), and the piston head (12) is driven by a liquid discharge mechanism, wherein the liquid discharge mechanism comprises a handle (2), a drive rod (3) and a drive motor (31). A fixed shell (21) is provided at one end of the handle (2), and the fixed shell (21) is threadedly connected to an end of the injection needle (1) away from the needle head (11), so that the fixed shell (21) is connected to the injection needle (1); one end of the driving rod (3) is fixedly connected to the piston head (12), and the other end passes through the fixed shell (21), and the driving rod (3) is slidably connected to the fixed shell (21); A driving cylinder (22) is disposed in the fixed shell (21), the driving cylinder (22) is threadedly sleeved outside the driving rod (3), and the driving cylinder (22) is rotatably connected to the fixed shell (21); The driving motor (31) is used to drive the driving cylinder (22) so that the driving rod (3) can move along the axial direction of the injection needle (1); The handle (2) is provided with a start button (201) and an adjustment knob (202); a battery (4) is provided at one end of the handle (2) away from the fixed shell (21); the start button (201), the adjustment knob (202) and the drive motor (31) are electrically connected to the battery (4) via a controller.

2. A veterinary syringe according to claim 1, characterized in that: One end of the driving cylinder (22) is rotatably connected to the fixed shell (21), and the other end is fixedly sleeved with a first gear (221); the driving motor (31) is fixedly arranged in the fixed shell (21), and the output shaft of the driving motor (31) is provided with a second gear (311) meshing with the first gear (221).

3. A veterinary syringe according to claim 1, characterized in that: A liquid medicine bottle (5) is fixedly arranged at one end of the fixed shell (21) away from the handle (2), and the liquid medicine bottle (5) is conductively connected to one end of the injection needle (1) close to the needle head (11) through a catheter (51); A first one-way valve (13) is provided on the end surface of the injection needle (1) close to one end of the needle head (11), and the catheter (51) is detachably connected to the first one-way valve (13), so that the liquid medicine in the catheter (51) can only flow into the injection needle (1); A second one-way valve (14) is arranged on the end surface of the injection needle (1) close to one end of the needle head (11); the needle head (11) is connected to the second one-way valve (14) via a connector (111), so that the liquid medicine in the injection needle (1) can only be discharged from the needle head (11); one end of the connector (111) is fixedly connected to the needle head (11), and the other end is detachably connected to the second one-way valve (14).

4. A veterinary syringe according to claim 1, characterized in that: It also includes a fixing frame, which includes an adjustment frame (61), a sliding sleeve (62) and a fixing ring (63). First connecting plates (64) are fixedly provided on both sides of the adjusting frame (61), and second connecting plates (65) are fixedly provided on both sides of the sliding sleeve (62), the first connecting plate (64) and the second connecting plate (65) on the same side are rotatably connected, and the first connecting plate (64) and the second connecting plate (65) on one side are fixed by a locking screw (7) to limit the relative rotation of the first connecting plate (64) and the second connecting plate (65); The two sides of the sliding sleeve (62) are respectively connected to the fixing ring (63) through elastic telescopic rods (621), and the sliding sleeve (62) and the fixing ring (63) can be slidably mounted outside the injection needle (1). The fixing ring (63) is threaded with a handle screw (66), and the handle screw (66) can abut against the outer wall of the injection needle (1) to limit the sliding of the fixing ring (63).

5. A veterinary syringe according to claim 4, characterized in that: The first connecting plate (64) on one side is evenly distributed with a plurality of adjustment holes (641), and the second connecting plate (65) is provided with a threaded hole (651). The locking screw (7) is slidably inserted into the adjustment hole (641) and then threadedly inserted into the threaded hole (651) to limit the first connecting plate (64) and the second connecting plate (65) to be at a current angle.

6. A veterinary syringe according to claim 4, characterized in that: A protective rubber layer (611) is fixedly provided on a side of the adjustment frame (61) facing away from the sliding sleeve (62).

7. A veterinary syringe according to claim 4, characterized in that: A notch (612) is provided on one side of the adjustment frame (61), and the two first connecting plates (64) are fixedly connected to two sides of one end of the adjustment frame (61) close to the notch (612).

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