[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0027] See Figure 1-4 , A veterinarian-specific syringe with adjustable squeezing force, including an injection tube 1. The material of the injection tube 1 is lightweight plastic, which can effectively prevent the equipment from being corroded, greatly prolong the service life of the equipment, and reduce the production cost. It has an indispensable role for the enterprise. The top of the injection tube 1 is interspersed with a push rod 2, the bottom of the push rod 2 is fixedly connected with a pusher plate 3, and the bottom of the pusher plate 3 is fixedly connected with an squeeze rod 4. The side of the rod 4 is provided with a triangular protrusion, which squeezes the spring rod 11 when it is moved down to a certain distance to accumulate the force of the spring rod 11. An injection needle 5 is inserted through the bottom of the injection tube 1, and the left side of the injection needle 5 is provided It has teeth and can be inserted by the clamping rod 7. The left side of the injection needle 5 is meshed and connected with a clockwork wheel 6. The left side of the injection needle 5 and below the clockwork wheel 6 is provided with a clamping rod 7, and the clamping rod 7 A squeeze block 8 is fixedly connected to the left side, and an elastic rod 9 is fixedly connected to the right side of the injection needle 5. The elastic rod 9 and the one-way clamp block 10 are clamped upward in one direction, and a one-way clamp block 10 is provided above the elastic rod 9 , The inner wall of the injection needle 5 is fixedly connected with a spring rod 11, the bottom of the spring rod 11 is rotatably connected with a pull rod 12, the side of the pull rod 12 is meshed and connected with a ratchet wheel 13, the ratchet wheel 13 and the pull rod 12 are unidirectionally engaged and driven upwards, the inner wheel of the ratchet wheel 13 The top rod 14 is slidingly connected to the surface. The material of the top rod 14 is stainless steel, which can effectively prevent the equipment from being corroded. The side of the top rod 14 away from the ratchet 13 is fixedly connected with an inflatable plate 15, and the side of the inflatable plate 15 is connected to the inflatable box through a return spring 16 is connected to make the ejector rod 14 continue to reciprocate left and right. The side of the inflatable plate 15 is slidably connected with an inflatable box 16, and the side of the inflatable box 16 is provided with a one-way air inlet pipe. When the inflatable plate 15 moves, the air is inhaled through the one-way air inlet pipe. When the airbag 18 is inflated through the inflation tube 17, an inflation tube 17 is fixedly connected to one side of the inflation box 16 away from the injection needle 5, and an airbag 18 is fixedly connected to the other side of the inflation tube 17.
[0028] When injecting drugs into the animal, press the squeeze block 8 so that the squeeze block 8 drives the clamping rod 7 to be inserted between the teeth provided on the side of the injection needle 5 to block the injection needle 5, and then insert the injection needle 5 Into the animal body, start to push the push rod 2 and inject the liquid medicine inside the injection tube 1 into the animal body through the push plate 3.
[0029] When the animal reacts violently during injection, the animal will drive the injection needle 5 to move. When the injection needle 5 is squeezed in parallel, the injection needle 5 will have a tendency to move upwards relative to the injection tube 1, passing through the one-way block 10 Blocked by the elastic rod 9, when the squeezing force reaches a certain level, the elastic rod 9 bends to a certain extent and moves upwards relative to the injection tube 1 over the one-way block 10. At this time, the injection needle 5 has reached the critical point of being able to continue to be inserted into the animal body. value.
[0030] Since the injection needle 5 moves up over the one-way block 10, the squeezing force of the injection needle 5 on the animal is removed, and it will not increase anymore. When the injection needle 5 moves up relative to the injection tube 1, it will be The bar wheel 6 produces meshing transmission. When the animal is not reacting violently, the injection needle 5 is driven to move to the initial position under the torsional force of the clockwork wheel 6, and the injection is continued without damaging the animal. During the reaction, the squeezing force of the needle is automatically adjusted to prevent the needle from continuing to be inserted into the animal.
[0031] During the injection process, the squeeze rod 4 is driven by the pusher plate 3 to move downward. Because the side of the squeeze rod 4 is provided with a triangular protrusion, when it contacts the spring rod 11, it will squeeze the spring rod 11. When the triangular protrusion is separated from the spring rod 11, the spring rod 11 suddenly loses its squeezing force, causing it to bounce up quickly, driving the rod 12, and the rod 12 engages with the ratchet 13 for transmission, so the rod 12 is fast Moving upward, it engages with the ratchet gear 13 and then disengages from the ratchet gear 13. Under the action of inertial force, the ratchet gear 13 continues to rotate, and the ejector rod 14 is pushed toward the inflatable box 16 through the arc-shaped protrusions set on the inner wheel surface. Under the action of the inflatable plate 15 and the return spring provided on the side, the ejector rod 14 continuously circulates left and right to drive the inflatable plate 15 to move synchronously. Because the side of the inflatable box 16 is provided with a one-way air inlet pipe, the movement of the inflatable plate 15 , The inflation box 16 inflates the airbag 18 through the inflation tube 17, and the airbag 18 expands to fill the side area of the injection needle 5 located in the inner part of the injection tube 1, so that the push plate 3 injects all the liquid medicine inside the injection tube 1 The effect in the animal body.
[0032] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. And variations, the scope of the present invention is defined by the appended claims and their equivalents.
