A kind of veterinary syringeTechnical field
The invention belongs to the field of medical instrument technology, and in particular to a kind of veterinary syringe.
Background technique
Veterinary syringe is the injection drug class instrument exclusively for animal design.Existing veterinary syringe is to animalWhen carrying out drug injection, the phenomenon that animal has struggle when usual syringe needle has just enter into animal body, at this moment animal doctor continues handleStruggle when syringe needle penetrates in animal body due to animal will cause the consequence of syringe needle deviation or run-bake-needle fault, even more seriousIt may cause syringe needle to fracture in animal body.Generally when injection, syringe needle reaches regulation and is pierced into after depth just promotion injectionDevice piston is by infusion of medicine, however often there is skin, fleshes that animal is pierced into syringe when in use for current syringeThe case where just drug injection is gone out during meat does not reach the injection depth that drug uses operating provision, wastesDrug reduces the effect for the treatment of or prevention.
Summary of the invention
In order to overcome the shortcomings of the prior art described above, the present invention provides a kind of veterinary syringes.
To achieve the goals above, the invention provides the following technical scheme:
A kind of veterinary syringe, including injection tube, infusion tube, needle holder, syringe needle, stop collar, pivoting device, pistonAnd piston rod；
One end of the infusion tube is connected to by check valve with the output end of the injection tube, the infusion tube it is anotherOne end is connected to the input terminal of the needle holder, and the output end of the needle holder is connected with the syringe needle, the needle holder it is defeatedEnd face is equipped with the stop collar out, and the stop collar is detachably connected with the needle holder, and the outer diameter of the stop collar is less thanThe outer diameter of the needle holder, the axial length of the stop collar are less than the length of the syringe needle, the input end face of the needle holderIt is connect with the output end face of the injection tube by more first springs；
The pivoting device includes lever and push rod, the lever and the push rod it is equal there are two, two levers andTwo push rods are symmetricly set on the two sides of the injection tube, and the front end of the lever is provided with stop part, the backstopOne end of part is connect with the front end of the lever, and the other end of the stop part is towards the needle holder, the fulcrum of the leverIt is positioned close on the outer wall of the injection tube of described infusion tube one end, between each lever and the injection tubeIt is provided with second spring, the second spring is located at the rear of the fulcrum, one end of the rear end of the lever and the push rodPivotable connection；
The piston, slip ring and retaining ring are arranged in the injection tube, and one end of the piston rod is from the injectionThe rear end of cylinder sequentially passes through the injection tube, slip ring and retaining ring and connect with the rear end of the piston, the piston rod it is anotherEnd is connect with handle, and the retaining ring is fixed on the middle position of the piston rod outer wall, the internal diameter of the retaining ring and the workThe outer diameter of stopper rod is identical, and the outer diameter of the retaining ring is less than the internal diameter of the injection tube, and the slip ring is set in the piston rodOn, the outer diameter that the internal diameter of the slip ring is greater than or equal to the piston rod is less than the outer diameter of the retaining ring, the slip ringOuter diameter is less than the internal diameter of the injection tube, and the other end of the push rod passes through the injection tube and the slip ring is hinged, describedOne section of through slot for push rod sliding is provided on injection tube two sides.
Preferably, the stop collar has multiple, and the axial length of multiple stop collars is different.
Preferably, there is an annular protrusion on the output end face of the needle holder, the outer ring of the annular protrusion is provided withOne screw thread, the stop collar are cylindrical shape, and the internal diameter of the stop collar is equal to the outer diameter of the annular protrusion, in the stop collarThe lower part of circle is provided with and matched second screw thread of first screw thread.
Preferably, one end of the push rod is arc-shaped.
Preferably, more first springs are circumferentially uniformly distributed along the center of the needle holder.
Preferably, first spring has 2-4 root.
Preferably, the length of the infusion tube is greater than or equal to the maximal tensility of first spring.
Preferably, anti-skid chequer is provided on the outside of the lever back segment.
Preferably, the front end of the stop collar is provided with stickum.
Preferably, the outer wall of the injection tube is equipped with the graduation mark for indicating injection dose.
Veterinary syringe structure provided by the invention mainly has following benefit: preventing animal to struggle by the way that hose is arrangedThe phenomenon that Shi Fasheng looper or broken needle；Facilitated by spring and penetrates the syringe needle with hose in animal body；Pass through stop collarIt limits syringe needle and enters the intracorporal length of animal, prevent problem too long or too short caused by artificially controlling, meanwhile, before stop collarEnd is provided with stickum, and stickum can be sticked on the skin of animal, and stop collar, which is played, to be prevented from shaking because of syringe needleIt is dynamic and caused by syringe needle deviation or the phenomenon that run-bake-needle fault occur；The pivoting device being made up of lever and push rod will have an acupuncture treatment and injection is dynamicMake disposable sequence to complete, avoids the case where just drug is released during acupuncture treatment, which is pushing away medicineWhen it is also relatively laborsaving, operate very convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the veterinary syringe of the embodiment of the present invention 1；
Fig. 2 is the needle holder side view of the veterinary syringe of the embodiment of the present invention 1；
Fig. 3 is the working state schematic representation of the veterinary syringe of the embodiment of the present invention 1.
Specific embodiment
With reference to the accompanying drawing, further description of the specific embodiments of the present invention.Following embodiment is only used for moreTechnical solution of the present invention is clearly demonstrated, and not intended to limit the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width "," thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " axisTo ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings, be only forConvenient for description technical solution of the present invention and simplify description, rather than the device or element of indication or suggestion meaning must haveSpecific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively importantProperty.In the description of the present invention, it should be noted that unless otherwise specific regulation or limit, term " connected ", " connection " are answeredIt broadly understood, for example, it may be being fixedly connected, may be a detachable connection or integral type connects；It can be mechanical connectIt connects, is also possible to be electrically connected；It can be directly connected, be also possible to indirectly connected through an intermediary.For the general of this fieldFor logical technical staff, the specific meanings of the above terms in the present invention can be understood according to specific conditions.It is retouched in of the inventionIn stating, unless otherwise indicated, the meaning of " plurality " is two or more, and this will not be detailed here.
Embodiment 1
The present invention provides a kind of veterinary syringes, specifically as shown in Figure 1-3, including injection tube 1, infusion tube 2, needleHeadstock 3, syringe needle 4, stop collar 5, pivoting device, piston 8 and piston rod 9.
As shown in Figure 1, one end of infusion tube 2 is connected to by check valve 10 with the output end of injection tube 1, infusion tube 2The other end be connected to the input terminal of needle holder 3, the effect of infusion tube 2 is to prevent when injecting to animal, due to dynamicThe excitation of object react and caused by syringe needle bending or the phenomenon that broken needle occur, the output end of needle holder 3 is connected with syringe needle 4, needleThe output end face of headstock 3 is equipped with stop collar 5, and stop collar 5 is coaxial with needle holder 3 and is detachably connected, and the outer diameter of stop collar 5 is smallIn the outer diameter of needle holder 3, the axial length of stop collar 5 is less than the length of syringe needle 4, and the effect of stop collar 5 is to limit syringe needle 4 to enterThe intracorporal length of animal prevents problem too long or too short caused by artificially controlling, and the front end of stop collar 5 is provided with gooMatter, stickum can be sticked on the skin of animal, and stop collar 5, which is played, prevents syringe needle 4 from shaking or even being pulled outThe input end face of effect, needle holder 3 is connect with the output end face of injection tube 1 by more first springs 11, more first springs11 are circumferentially uniformly distributed along the center of needle holder 3, and the first spring 11 has a 2-4 root, and in the present embodiment, the first spring is 2, operationPersonnel can be launched needle holder 3 by unclamping compressed first spring 11, and needle holder 3 pushes syringe needle 4 to penetrate animalIn vivo, while the control of stop collar 5 penetrates depth, and the length of infusion tube 2 is greater than or equal to the maximal tensility of the first spring 11,In order to guarantee that it is disconnected that infusion tube 2 is not dragged surprisingly.
Pivoting device includes lever 6 and push rod 7, lever 6 and push rod 7 there are two, two levers 6 and two push rods 7 are equalThe two sides of injection tube 1 are symmetricly set on, the front end of lever 6 is provided with " L " type stop part 12, one end of stop part 12 and lever 6Front end be linked together, the other end of stop part 12 towards needle holder 3, the effect of stop part 12 be pressed against needle holder 3 front endFace, the fulcrum of lever 6 are positioned close on the outer wall of the injection tube 1 of 2 one end of infusion tube, between each lever 6 and injection tube 1It is provided with second spring 13, second spring 13 is located at the rear of fulcrum, and second spring 13 pushes lever 6 that stop part 12 is pressedIt leans against in needle holder 3, the rear end of lever 6 and one end pivotable connection of push rod 7, lever 6 can be according to the length needs of push rod 7Be arranged to curved shape, meanwhile, one end of push rod 7 is arc-shaped, prevent from being arranged to straight-bar and caused by block when pushingDead phenomenon.
Piston 8, slip ring 14 and retaining ring 16 are arranged in injection tube 1, and one end of piston rod 9 is from the rear end of injection tube 1It sequentially passes through injection tube 1, slip ring 14 and retaining ring 16 to connect with the rear end of piston 8, the other end and handle 15 of piston rod 9 connectIt connects, retaining ring 16 is fixed on the middle position of 9 outer wall of piston rod, and the internal diameter of retaining ring 16 is identical as the outer diameter of piston rod 9, retaining ring 16Outer diameter be less than the internal diameter of injection tube 1, slip ring 14 is set on piston rod 9, and the internal diameter of slip ring 14 is greater than or equal to pistonThe outer diameter of bar 9 is less than the outer diameter of retaining ring 16, and the outer diameter of slip ring 14 is less than the internal diameter of injection tube 1, the forward movement of slip ring 14Retaining ring 16 can be pushed, to play the role of pushing piston rod 9 to travel forward and then piston 8 being pushed to travel forward.Push rod 7The other end passes through injection tube 1 and slip ring 14 is hinged, and one section of through slot slided for push rod 7 is provided on injection tube 1, and through slot is located at noteThe pivoting device that the back segment of shooting cylinder 1, lever 6 and push rod 7 form can move pivotally, meanwhile, push rod 7 can push slip ring 14Movement.
Further, as shown in Fig. 2, having an annular protrusion 31, the outer ring of annular protrusion 31 on the output end face of needle holder 3It is provided with the first screw thread, stop collar 5 is cylindrical shape, and the internal diameter of stop collar 5 is equal to the outer diameter of annular protrusion 31,5 inner ring of stop collarLower part be provided with and matched second screw thread of the first screw thread.
Further, stop collar 5 has multiple, and the axial length of multiple stop collars 5 is different, and operator can be according to differenceAnimal and different service conditions required for the length of insertion needle 4 select the stop collar 5 with axially different length.
Further, it is provided with anti-skid chequer on the outside of 6 rear end of lever, operator is facilitated to hold lever 6.
Further, the outer wall of injection tube 1 is equipped with the graduation mark for indicating injection dose, and operator is facilitated to hold suckingThe number of dose.
Working principle:
Firstly, syringe is in state as shown in Figure 1, i.e. 13 support lever 6 of the second spring stop part that makes front end12 in the states for being pressed against 3 front end face of needle holder, after operator carries out disinfection to syringe needle 4, by drawing handle 15 by medical fluidIt is pumped into injection tube 1 according to quantity；Then, syringe alignment is needed the position that is injected by operator, and operator is towards closeThe direction of injection tube 1 presses the rear end of two levers 6, and stop part 12 was detached from the pressing to needle holder 3, subsequent first spring before this11 release forward needle holder 3, and then syringe needle 4 penetrates in animal body, while stop collar 5 is sticked on the skin of animal and (preferably existsThe hair at the position that needs to have an acupuncture treatment on animal bodies is shaved off before acupuncture treatment)；As shown in figure 3, operator continues to press lever 6,7 meeting of push rodIt moves pivotally together, and slip ring 14 is pushed to travel forward, slip ring 14 will push retaining ring 16 again and travel forward, and then pushMedical fluid in injection tube 1 is injected the internal of precession object forward by piston 8, after waiting injections to finish, by syringe needle 4 and stop collar 5 fromIt is extracted on the body of animal.
Embodiment described above is merely preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to this,Anyone skilled in the art within the technical scope of the present disclosure, the technical solution that can be become apparent toSimple change or equivalence replacement, all belong to the scope of protection of the present invention.