CN207041709U - A kind of gas-driven needle-less syringe - Google Patents

Abstract

A kind of gas-driven needle-less syringe, including dosage adjusting part, housing unit, piston component, medicine bottle assembly, control valve group, syringe assemblies.Syringe assemblies are located at one end of inner housing, and are fixedly connected by tightening nut with inner housing.Plunger in piston component is located inside syringe, and the small end of piston is located in the rod end chamber of inner housing, and in the plunger shaft of inner housing, the dosage regulation pipe in dosage adjusting part is located inside plunger shaft, adjacent with the big end of piston at big end.End cap in dosage adjusting part is fixedly connected by screw thread with inner housing.Dosage regulation pipe is connected by screw thread with end cap, plays a part of regulating dosage.Valve pipe in control valve group is located in the valve pocket of inner housing, coordinates control valve work, plays a part of controlling piston movement.Medicine bottle assembly is fixedly connected by screw with housing unit, and one end of the woven hose in medicine bottle assembly is inserted on inlet valve cap, and decoction is delivered to inside syringe.

Description

A kind of gas-driven needle-less syringe

Technical field

The utility model belongs to medical instruments field, it particularly relates to a kind of gas-driven needle-less syringe.

Background technology

Syringe has the history of more than 300 years from medical science is formally used for till now.Traditional syringe was once brought to the mankind Many facilities, but with mankind itself's growth in the living standard, its own be present, such as easily cause infectious disease biography Broadcast, needle head infection, needle sharing, pain, long term injections can produce the unfavorable factors such as subcutaneous nodule.Foreign countries' report display, in U.S. In the medical worker of state 4,400,000, every year because the number that syringe needle or medical sharp device are stabbed is up to 800,000, the etesian acupuncture of nurse Wound is up to 80 ~ 1,000,000 times；The situation in China also allows of no optimist：It is growing due to infecting case caused by unsafe injection, cause Direct economic loss is innumerable, and 87.5% nurse has injection sharp instrument to stab experience.Meanwhile diabetic needs to determine Phase supplementation with insulin is to reduce blood glucose, and injection is undoubtedly best mode, and frequent due to injecting, and intramuscular injection easily produces inflammation The adverse reactions such as disease, allergy, muscular atrophy.Safety injection is always the social concern of whole world concern, in developing country, often Year, children received 5,500,000,000 injections, wherein 10% inoculation is unsafe.China is each including immunity inoculation every year Syringes and syringe needle, disposable syringes use of not sterilized reuse be present in kind injection about 3,000,000,000 times, some areas The phenomenon in backflow market afterwards.

Existing gas-driven needle-less syringe construction is complicated on market today, and cost is high, limits gas-driven needle-less syringe Popularization.

The content of the invention

Technical problem：The utility model provides a kind of simple in construction, has and automatic inhales the pneumatic of medicine and dosage regulatory function Needleless injector.

Technical scheme：Gas-driven needle-less syringe of the present utility model, including dosage adjusting part, housing unit, piston group Part, medicine bottle assembly, control valve group, syringe assemblies.

Dosage adjusting part includes dosage regulation pipe, magnet, crosses gas lid, be check valve, rubber sleeve, end cap, adjusting knob, solid Determine screw.Dosage regulation pipe sealing ring, cross gas lid sealing ring.The big end of dosage regulation pipe is located in the plunger shaft in inner housing. Gas lid is crossed to be fixedly mounted in the inner chamber at the big end of dosage regulation pipe, cross gas lid sealing ring be located at the inner chamber at the big end of dosage regulation pipe with Cross in the groove between gas lid.Magnet was fixedly mounted in the groove of gas lid one end, and end face is concordant with the end face for crossing gas lid.Check valve One end be threadably secured and be connected in the screwed hole of the gas lid other end.Rubber sleeve is enclosed on the other end of check valve.Two Dosage regulation pipe sealing ring is respectively fitted in the groove of dosage regulation pipe.End cap is fixedly connected by screw thread with inner housing, and dosage is adjusted The small end of section pipe is connected by screw thread with end cap.Adjusting knob is enclosed on the small end of dosage regulation pipe, and will be adjusted by fixed screw Section knob is fixedly connected with dosage regulation pipe.

Syringe assemblies include tightening nut, syringe, inlet valve cap, water inlet valve element, water inlet valve core spring, inlet valve seat sealing Circle, water inlet valve core seal ring, inlet valve cap sealing ring, inlet valve seat, sealed nozzle circle, nozzle, water outlet valve core spring, outlet valve Core sealing ring, water outlet valve element.Syringe one end is inserted in the groove of inner housing one end, and is consolidated syringe and inner housing by tightening nut Fixed connection.Water outlet valve element is located in the cavity of syringe one end, and water outlet valve core seal ring is enclosed on outside water outlet valve element.Nozzle passes through spiral shell Line is fixedly connected with syringe.In groove of the sealed nozzle circle between nozzle and syringe.One end of valve core spring is located in nozzle, The other end is affixed with water outlet valve element, and under valve core spring effect, water outlet valve core seal ring is close together with syringe sealing inclined-plane. Inlet valve seat is fixedly connected by screw thread with syringe.In groove of the inlet valve seat sealing ring between inlet valve seat and syringe.Enter Water valve cap is fixedly connected by screw thread with inlet valve seat.Groove of the inlet valve cap sealing ring between inlet valve cap and inlet valve seat In.Water inlet valve core seal ring is enclosed on into outside water valve element.Water inlet valve element and water inlet valve core spring are located at inlet valve cap and water intaking valve In cavity between seat.Water inlet valve element spring one end is affixed with water inlet valve element, and the other end is affixed with inlet valve seat.In water inlet valve element Under spring effect, water inlet valve core seal ring is close in the sealing inclined-plane of inlet valve cap.

Piston component includes piston, plunger, piston head sealing ring, piston packing, piston rod seals, plunger seal Circle.Plunger sealing washer is enclosed in the groove of plunger at one end.Piston rod seals are enclosed in the groove of piston tailpiece of the piston rod.Piston packing It is enclosed in the groove of piston end.Piston head sealing ring is enclosed in the groove of piston crown.Plunger neck, the end of plunger are provided with piston Portion is after the insertion of plunger neck, with piston coaxial.One end that plunger is provided with plunger sealing washer is located in the medicinal liquid cavity of syringe.It is living One end of plug is located in plunger shaft, adjacent with dosage regulation pipe.The other end is located in rod end chamber.Piston can be along plunger shaft Axis direction moves.Piston can be with plunger associated movement.

Control valve group includes valve pipe, control valve, connecting rod, trigger, link pin, control valve spring, valve bonnet seal circle, control Valve seals.Valve pipe is fixedly mounted in valve pocket.In groove of the valve bonnet seal circle between valve pipe and valve pocket.Control valve seals It is enclosed in control valve.Control valve is located in the cavity inside valve pipe, and can be moved along the axis direction of valve pipe.Control valve bullet Spring is located in valve pipe, and the end face of one end and control valve is affixed, and the internal boss of the other end and left shell and right shell body is affixed.

In the utility model, housing unit includes inner housing, left shell, right shell body, suction nozzle, tracheae, connection valve, spiral shell Nail.Inner housing is wrapped in inside by left shell and right shell body, and left shell and right shell body are fixed together by screw.Suction nozzle It is fixedly connected by screw thread with the air inlet of inner housing.Connection valve is stuck in the hole between left shell and right shell body, one end position In the inside of left shell and right shell body, the other end is located at the outside of left shell and right shell body.One end of tracheae is fixed with suction nozzle Connection, the other end are fixedly connected with being connected valve.

In the utility model, two rotation projections on trigger are coaxial, respectively the left-handed turn trough positioned at left shell and right shell In the dextrorotation turn trough of body.Trigger can rotate around the axis of rotation projection.The both ends of connecting rod respectively by link pin and trigger and Control valve is hinged.During cocking, control valve can move along the axis direction of valve pipe.

In the utility model, medicine bottle assembly includes storing medicine bottle, bottle rack, woven hose, screw.Using screw by bottle rack with Left shell is fixedly connected with right shell body.Storing medicine bottle is enclosed on bottle rack.One end of woven hose is inserted in drug storage mouth cylindrical part, another termination On inlet valve cap.

Beneficial effect：Compared with prior art, the utility model has advantages below：

1st, the existing gas-driven needle-less syringe of in the market is using overall shell structure, and processing and manufacturing is difficult, quality weight.And The scheme that gas-driven needle-less syringe in the utility model is combined using inner housing and left and right shell body, by most motion portions Part is arranged in the inner housing of metal, both ensure that intensity and the life requirements of syringe, and had been reduced the weight of syringe again；

2nd, larger-size magnet is generally fitted with the piston in existing gas-driven needle-less syringe, not only increased whole The quality of individual syringe, and the difference of different magnet power can cause the unstable of properties of product.Using sealing in the utility model Circle coordinates the scheme of small magnet, reduces the dependence to magnet suction, not only increases the stability of product, also reduces injection The quality of device；

3rd, in existing gas-driven needle-less syringe, piston is connected with plunger using flexible member, and flexible member is not only processed Manufacture is difficult, and more fragile.Piston in the utility model connects plunger using notch, simple in construction, easier to process, And more conveniently disassemble sterilization；

4th, existing gas-driven needle-less syringe using common disposable medical syringe as medicine storage device, by decoction from When being transferred in medicine bottle in disposable medical syringe, if misoperation, liquid medicine contamination is easily caused.In the utility model

Using ready-made medicine bottle powder charge, coordinate woven hose to carry out the conveying of decoction, avoid and injected using disposable medical Device inhales the process of medicine, and use is more convenient, safety；

5th, existing gas-driven needle-less syringe uses single finger triggering pulling, and vaccine injection is being carried out to large-scale farming field When, but finger triggering pulling easily causes personnel's fatigue.Long trigger configuration is used in the utility model, can both hands refer to triggering pulling, The sense of fatigue of finger when high-volume is injected can be reduced.

Brief description of the drawings

Fig. 1 is syringe construction of the present utility model；

Fig. 2 is dosage adjusting part structure chart；

Fig. 3 is housing unit structure chart；

Fig. 4 is piston assembly structure figure；

Fig. 5 is piston scheme of installation；

Fig. 6 is medicine bottle assembly structure chart；

Fig. 7 is control valve group structure chart；

Fig. 8 is the A-A sectional views in Fig. 1；

Fig. 9 is syringe assemblies structure chart；

Figure 10 is to be filled the syringe construction figure after decoction；

Figure 11 terminates rear syringe construction figure to detain trigger injection；

Figure 12 is gas-driven needle-less syringe outside drawing.

Have in figure：Dosage adjusting part 1, dosage regulation pipe 1-1, dosage regulation pipe air passing hole 1-1-1, excessively magnet 1-2, gas Cover 1-3, cross gas cap bore 1-3-1, check valve 1-4, rubber sleeve 1-5, end cap 1-6, adjusting knob 1-7, fixed screw 1-8, housing Component 2, housing 2-1, ante-chamber stomata 2-1-1, back cavity stomata 2-1-2, plunger shaft 2-1-3, rod end chamber 2-1-4, valve pocket 2-1- 5th, left shell 2-2, left-handed turn trough 2-2-1, steam vent 2-2-2, right shell body 2-3, dextrorotation turn trough 2-3-1 suction nozzles 2-4, tracheae 2- 5th, valve 2-6, screw 2-7, piston component 3, piston 3-1, plunger neck 3-1-1, plunger 3-2, piston head sealing ring 3- are connected 3rd, piston packing 3-4, piston rod seals 3-5, plunger sealing washer 3-6, medicine bottle assembly 4, storing medicine bottle 4-1, bottle rack 4-2, Woven hose 4-3, screw 2-7, control valve group 5, valve pipe 5-1, valve Guan Qiankong 5-1-1, valve pipe mesopore 5-1-2, valve pipe metapore 5- 1-3, control valve 5-2, connecting rod 5-3, trigger 5-4, rotation projection 5-4-1, link pin 5-5, control valve spring 5-6, valve bonnet seal Circle 5-7, control valve seals 5-8, syringe assemblies 6, tighten nut 6-1, syringe 6-2, syringe sealing inclined-plane 6-2-2, medicinal liquid cavity 6-2-1, inlet valve cap 6-3, sealing inclined-plane 6-3-1, water inlet valve element 6-4, water inlet valve core spring 6-5, inlet valve seat sealing ring 6- 6th, water inlet valve core seal ring 6-7, inlet valve cap sealing ring 6-8, inlet valve seat 6-9, sealed nozzle circle 6-10, nozzle 6-11, spray Nozzle aperture 6-11-1, water outlet valve core spring 6-12, water outlet valve core seal ring 6-13, water outlet valve element 6-14.

Embodiment

Below in conjunction with the accompanying drawings, the technical solution of the utility model is described in detail.

As shown in Figures 1 to 10, a kind of structure of gas-driven needle-less syringe is devised.Including dosage regulation pipe 1-1, dosage Regulation pipe air passing hole 1-1-1, magnet 1-2, cross gas lid 1-3, cross gas cap bore 1-3-1, check valve 1-4, rubber sleeve 1-5, end cap 1- 6th, adjusting knob 1-7, fixed screw 1-8, housing 2-1, ante-chamber stomata 2-1-1, back cavity stomata 2-1-2, plunger shaft 2-1-3, work Stopper rod chamber 2-1-4, valve pocket 2-1-5, left shell 2-2, left-handed turn trough 2-2-1, steam vent 2-2-2, right shell body 2-3, dextrorotation turn trough 2-3-1 suction nozzles 2-4, tracheae 2-5, connection valve 2-6, screw 2-7, piston 3-1, plunger neck 3-1-1, plunger 3-2, piston Head sealing ring 3-3, piston packing 3-4, piston rod seals 3-5, plunger sealing washer 3-6, storing medicine bottle 4-1, bottle rack 4-2, Woven hose 4-3, screw 2-7, valve pipe 5-1, valve Guan Qiankong 5-1-1, valve pipe mesopore 5-1-2, valve pipe metapore 5-1-3, control valve 5- 2nd, connecting rod 5-3, trigger 5-4, rotation projection 5-4-1, link pin 5-5, control valve spring 5-6, valve bonnet seal circle 5-7, control valve Sealing ring 5-8, tighten nut 6-1, syringe 6-2, medicinal liquid cavity 6-2-1, syringe sealing inclined-plane 6-2-2, inlet valve cap 6-3, sealing Inclined-plane 6-3-1, water inlet valve element 6-4, water inlet valve core spring 6-5, inlet valve seat sealing ring 6-6, water inlet valve core seal ring 6-7, enter Water valve cap sealing ring 6-8, inlet valve seat 6-9, sealed nozzle circle 6-10, nozzle 6-11, nozzle bore 6-11-1, water outlet valve core spring 6-12, water outlet valve core seal ring 6-13, water outlet valve element 6-14.

As shown in figure 1, syringe 6-2 one end is inserted in the groove of inner housing 2-1 one end, and by tightening nut 6-1 by syringe 6-2 is fixedly connected with inner housing 2-1.As shown in figure 9, water outlet valve element 6-14 is located in the cavity of syringe 6-2 one end, water outlet valve element Sealing ring 6-13 is enclosed on water outlet valve element 6-14.Be provided with nozzle bore 6-11-1 on nozzle 6-11, nozzle 6-11 by screw thread and Syringe 6-2 is fixedly connected.In grooves of the sealed nozzle circle 6-10 between nozzle 6-11 and syringe 6-2.Valve core spring 6-12's One end is located in nozzle 6-11, and the other end is affixed with water outlet valve element 6-14, under valve core spring 6-12 effects, water outlet seal spool Circle 6-13 and syringe sealing inclined-plane 6-2-2 is close together.Inlet valve seat 6-9 is fixedly connected by screw thread with syringe 6-2.Water inlet In grooves of the valve seat insert 6-6 between inlet valve seat 6-9 and syringe 6-2.Inlet valve cap 6-3 passes through screw thread and inlet valve seat 6-9 is fixedly connected.In grooves of the inlet valve cap sealing ring 6-8 between inlet valve cap 6-3 and inlet valve seat 6-9.Water inlet valve element Sealing ring 6-7 is enclosed on on water valve element 6-4.Water inlet valve element 6-4 and water inlet valve core spring 6-5 are located at inlet valve cap 6-3 and water inlet In cavity between valve seat 6-9.Water inlet valve core spring 6-5 one end is affixed with water inlet valve element 6-4, the other end and inlet valve seat 6-9 It is affixed.Under water inlet valve core spring 6-5 effects, water inlet valve core seal ring 6-7 is close to inlet valve cap 6-3 sealing inclined-plane 6-3- On 1.

As shown in figure 5, plunger neck 3-1-1, plunger 3-2 end is provided with piston 3-1 along shown by arrow direction It is coaxial with piston 3-1 after plunger neck 3-1-1 insertions.As shown in figure 4, plunger sealing washer 3-6 is enclosed on plunger 3-2 one end In groove.Piston rod seals 3-5 is enclosed in the groove of piston 3-1 tailpieces of the piston rod.Piston packing 3-4 is enclosed in the groove of piston end. Piston head sealing ring 3-3 is enclosed in the groove of piston crown.As shown in figure 1, plunger 3-2 is provided with plunger sealing washer 3-6 one end In syringe 6-2 medicinal liquid cavity 6-2-1.Piston 3-1 one end is located in plunger shaft 2-1-3, with dosage regulation pipe 1-1 phases It is adjacent.The other end is located in rod end chamber 2-1-4.Piston 3-1 can be along plunger shaft 2-1-3 axis direction in the presence of gas Motion.

It is fixedly mounted on as shown in Fig. 2 crossing gas lid 1-3 in the inner chamber at the big ends of dosage regulation pipe 1-1, crosses gas lid sealing ring 1- 10 are located at the inner chamber at the big ends of dosage regulation pipe 1-1 and cross in the groove between gas lid 1-3.Magnet 1-2 was fixedly mounted on gas lid 1-3 In the groove of one end, end face is concordant with the end face for crossing gas lid 1-3.Check valve 1-4 one end, which is threadably secured, was connected to gas lid In the screwed hole of the 1-3 other ends.Rubber sleeve 1-5 is enclosed on the check valve 1-4 other end.Two 1-9 points of dosage regulation pipe sealing rings It is not enclosed in dosage regulation pipe 1-1 groove.Dosage regulation pipe 1-1 small end is connected by screw thread with end cap 1-6.Adjusting knob 1- 7 are enclosed on dosage regulation pipe 1-1 small end, and fix adjusting knob 1-7 and dosage regulation pipe 1-1 by fixed screw 1-8 and connect Connect.As shown in figure 1, dosage regulation pipe 1-1 big end is located in the plunger shaft 2-1-3 in inner housing 2-1.End cap 1-6 passes through spiral shell Line is fixedly connected with inner housing 2-1.During regulating dosage, by rotation of adjustment knob 1-7, dosage regulation pipe 1-1 is driven to revolve together Turn, dosage regulation pipe 1-1 can produce certain axial displacement, it is possible to which regulating piston 3-1 inhales the axial location after medicine, so as to adjust Section draws the amount of decoction, reaches the purpose of dosage regulation.

As shown in Figure 1 and Figure 7, valve pipe 5-1 is fixedly mounted in valve pocket 2-1-5.Valve bonnet seal circle 5-7 is located at valve pipe 5-1 In groove between valve pocket 2-1-5.Control valve seals 5-8 is enclosed on control valve 5-2.Control valve 5-2 is located inside valve pipe 5-1 Cavity in, and can be moved along valve pipe 5-1 axis direction.Control valve spring 5-6 is located in valve pipe 5-1, one end and control Valve 5-2 processed end face is affixed, and the internal boss of the other end and left shell 2-2 and right shell body 2-3 is affixed.As illustrated in figures 1 and 8, Two rotation projection 5-4-1 on trigger 5-4 are coaxial, respectively positioned at left shell 2-2 left-handed turn trough 2-2-1 and right shell body 2-3 Dextrorotation turn trough 2-3-1 in.Trigger 5-4 can rotate around rotation projection 5-4-1 axis.Connecting rod 5-3 both ends pass through respectively Link pin 5-5 is hinged with trigger 5-4 and control valve 5-2.During cocking 5-4, under connecting rod 5-3 drive, control valve 5-2 energy It is enough to be moved along valve pipe 5-1 direction from axis direction to compression control valve spring 5-6.Trigger 5-4 is unclamped, in control valve spring Under 5-6 effects, trigger 5-4 and control valve 5-2 reset.

As shown in figures 1 and 3, inner housing 2-1 is wrapped in inside by left shell 2-2 and right shell body 2-3, and screw 2-7 is by a left side Housing 2-2 and right shell body 2-3 are fixed together.Suction nozzle 2-4 is fixed by screw thread and inner housing 2-1 air inlet to be connected Connect.Connection valve 2-6 is stuck in the hole between left shell 2-2 and right shell body 2-3, and one end is located at left shell 2-2 and right shell body 2-3 Inside, the other end is located at left shell 2-2 and right shell body 2-3 outside, to connect source of the gas.Tracheae 2-5 one end and air inlet Mouth 2-4 is fixedly connected, and the other end is fixedly connected with being connected valve 2-6.

As shown in figures 1 to 6, bottle rack 4-2 is fixedly connected with left shell 2-2 and right shell body 2-3 using screw 2-7. Storing medicine bottle 4-1 is enclosed on bottle rack 4-2.Woven hose 4-3 one end is inserted in storing medicine bottle 4-1 oral areas, another to terminate at inlet valve cap On 6-3.

As shown in Figure 10, after connecting source of the gas, the gases at high pressure of source of the gas flow into from connection valve 2-6, along the reality in Figure 10 The path of line arrow logo, flow separately through tracheae 2-5, suction nozzle 2-4, valve pocket 2-1-5, valve pipe mesopore 5-1-2, valve Guan Qiankong 5- The side that 1-1, ante-chamber stomata 2-1-1 enter in plunger shaft 2-1-3, gas push impact piston 3-1 to dosage adjusting part 1 sides Backward, piston 3-1 big end and the fitting of dosage regulation pipe 1-1 end face.The gas of plunger shaft 2-1-3 opposite sides is along in Figure 10 Dotted arrow mark path, flowed separately through gas cap bore 1-3-1, dosage regulation pipe air passing hole 1-1-1, back cavity stomata 2-1-2, Valve pipe metapore 5-1-3, steam vent 2-2-2 are discharged into air.Piston 3-1 pulls plunger 3-2 to equidirectional, medicinal liquid cavity 6-2-1 Volume increase, medicinal liquid cavity 6-2-1 produce vacuum, now in the presence of atmospheric pressure and water outlet valve core spring 6-12, syringe 6-2 End is in sealing state.Under atmospheric pressure effect, the decoction in storing medicine bottle 4-1 is pressed into inlet valve cap 6-3, is pushed open into water Valve element 6-4, decoction are flowed into medicinal liquid cavity 6-2-1, fill up medicinal liquid cavity 6-2-1 chambers.

During injection, nozzle 6-11 is withstood on to the injection position of human or animal.As shown in figure 11, cocking 5-4, plunger shaft The path that the gas of 2-1-3 sides identifies along the dotted arrow in Figure 11, flows separately through ante-chamber stomata 2-1-1, valve Guan Qiankong 5-1-1 enters air.The gases at high pressure of source of the gas flow into from connection valve 2-6, the path identified along the solid arrow in Figure 11, Flow separately through tracheae 2-5, suction nozzle 2-4, valve pocket 2-1-5, valve pipe mesopore 5-1-2, valve pipe metapore 5-1-3, back cavity stomata 2-1- 2nd, dosage regulation pipe air passing hole 1-1-1, gas cap bore 1-3-1, act on piston 3-1 head, and active area is gas cap bore 1-3-1 Sectional area, now thrust suffered by piston 3-1 magnet 1-2 suction and frictional force can just be overcome to start slowly to move.Work as work When plug 3-1 moves to piston head sealing ring 3-3 just off gas cap bore 1-3-1, the gases at high pressure of source of the gas enter plunger shaft 2-1-3 Side in, be applied to the big ends of piston 3-1 whole cross section product on, thrust gas increased dramatically, by piston 3-1 rapidly to remote Dosage regulation pipe 1-1 direction promotes.After piston 3-1 hits plunger 3-2, plunger 3-2 associated movements are promoted.Plunger 3-2 is extruded Decoction in medicinal liquid cavity 6-2-1, the pressure of decoction increased dramatically, under decoction pressure and the 6-5 effects of water inlet valve core spring, water inlet Valve core seal ring 6-7 is close on inlet valve cap 6-3 sealing inclined-plane 6-3-1, and inlet valve cap 6-3 is in sealing state.High pressure Decoction pushes water outlet valve element 6-14 open, is sprayed from the nozzle bore 6-11-1 high speeds of nozzle 6-11 ends, pierces through skin, and decoction enters Subcutaneously or intramuscularly organize, reach the purpose of Needleless injection.

After injection, nozzle 6-11 is departed to the injection position of human or animal, unclamps trigger 5-4, gas is according to Figure 10 The path flowing of the solid arrow and dotted arrow of middle mark, piston 3-1 and plunger 3-2 reset, inhaled again in medicinal liquid cavity 6-2-1 Full decoction, wait injection next time.

Claims (4)

1. a kind of gas-driven needle-less syringe, it is characterised in that the syringe includes dosage adjusting part（1）, housing unit（2）、 Piston component（3）, medicine bottle assembly（4）, control valve group（5）, syringe assemblies（6）, the dosage adjusting part（1）Including dosage Regulation pipe（1-1）, magnet（1-2）, cross gas lid（1-3）, check valve（1-4）, rubber sleeve（1-5）, end cap（1-6）, adjusting knob （1-7）, fixed screw（1-8）, dosage regulation pipe sealing ring（1-9）, cross gas lid sealing ring（1-10）, dosage regulation pipe（1-1） Big end be located at inner housing（2-1）In plunger shaft（2-1-3）In, cross gas lid（1-3）It is fixedly mounted on dosage regulation pipe（1-1） In the inner chamber held greatly, gas lid sealing ring is crossed（1-10）Positioned at dosage regulation pipe（1-1）The inner chamber held greatly and gas lid excessively（1-3）Between Groove in, magnet（1-2）It was fixedly mounted on gas lid（1-3）In the groove of one end, end face is with crossing gas lid（1-3）End face it is concordant, Check valve（1-4）One end be threadably secured and be connected to gas lid（1-3）In the screwed hole of the other end, rubber sleeve（1-5）Set In check valve（1-4）The other end, two dosage regulation pipe sealing rings（1-9）It is respectively fitted over dosage regulation pipe（1-1）Outside In groove, end cap（1-6）Pass through screw thread and inner housing（2-1）It is fixedly connected, dosage regulation pipe（1-1）Small end pass through screw thread and end Lid（1-6）Connection, adjusting knob（1-7）It is enclosed on dosage regulation pipe（1-1）Small end, and pass through fixed screw（1-8）Will regulation Knob（1-7）With dosage regulation pipe（1-1）It is fixedly connected, the syringe assemblies（6）Including tightening nut（6-1）, syringe（6- 2）, inlet valve cap（6-3）, water inlet valve element（6-4）, water inlet valve core spring（6-5）, inlet valve seat sealing ring（6-6）, water inlet valve element Sealing ring（6-7）, inlet valve cap sealing ring（6-8）, inlet valve seat（6-9）, sealed nozzle circle（6-10）, nozzle（6-11）, go out Water valve core spring（6-12）, water outlet valve core seal ring（6-13）, water outlet valve element（6-14）, syringe（6-2）One end is inserted in inner housing （2-1）In the groove of one end, and by tightening nut（6-1）By syringe（6-2）And inner housing（2-1）It is fixedly connected, water outlet valve element （6-14）Positioned at syringe（6-2）In the cavity of one end, water outlet valve core seal ring（6-13）It is enclosed on water outlet valve element（6-14）Outside, spray Mouth（6-11）Pass through screw thread and syringe（6-2）It is fixedly connected, sealed nozzle circle（6-10）Positioned at nozzle（6-11）And syringe（6-2） Between groove in, valve core spring（6-12）One end be located at nozzle（6-11）In, the other end and water outlet valve element（6-14）It is affixed, Valve core spring（6-12）Under effect, water outlet valve core seal ring（6-13）With syringe sealing inclined-plane（6-2-2）It is close together, intakes Valve seat（6-9）Pass through screw thread and syringe（6-2）It is fixedly connected, inlet valve seat sealing ring（6-6）Positioned at inlet valve seat（6-9）And pin Cylinder（6-2）Between groove in, inlet valve cap（6-3）Pass through screw thread and inlet valve seat（6-9）It is fixedly connected, inlet valve cap sealing ring （6-8）Positioned at inlet valve cap（6-3）And inlet valve seat（6-9）Between groove in, intake valve core seal ring（6-7）It is enclosed on water intaking valve Core（6-4）Outside, valve element of intaking（6-4）With water inlet valve core spring（6-5）Positioned at inlet valve cap（6-3）And inlet valve seat（6-9） Between cavity in, intake valve core spring（6-5）One end and water inlet valve element（6-4）It is affixed, the other end and inlet valve seat（6-9）Phase Patch, in water inlet valve core spring（6-5）Under effect, valve core seal ring of intaking（6-7）It is close to inlet valve cap（6-3）Sealing inclined-plane （6-3-1）On, the piston component（3）Including piston（3-1）, plunger（3-2）, piston head sealing ring（3-3）, piston packing （3-4）, piston rod seals（3-5）, plunger sealing washer（3-6）, plunger sealing washer（3-6）It is enclosed on plunger（3-2）The groove of one end In, piston rod seals（3-5）It is enclosed on piston（3-1）In the groove of tailpiece of the piston rod, piston packing（3-4）It is enclosed on the groove of piston end In, piston head sealing ring（3-3）It is enclosed in the groove of piston crown, piston（3-1）On be provided with plunger neck（3-1-1）, plunger （3-2）End from plunger neck（3-1-1）After insertion, with piston（3-1）Coaxially, plunger（3-2）Plunger sealing washer is installed （3-6）One end be located at syringe（6-2）Medicinal liquid cavity（6-2-1）In, piston（3-1）One end be located at plunger shaft（2-1-3）In, With dosage regulation pipe（1-1）Adjacent, the other end is located at rod end chamber（2-1-4）In, piston（3-1）Can be along plunger shaft（2-1- 3）Axis direction motion, piston（3-1）Can be with plunger（3-2）Associated movement, the control valve group（5）Including valve pipe （5-1）, control valve（5-2）, connecting rod（5-3）, trigger（5-4）, link pin（5-5）, control valve spring（5-6）, valve bonnet seal circle （5-7）, control valve seals（5-8）, valve pipe（5-1）It is fixedly mounted on valve pocket（2-1-5）In, valve bonnet seal circle（5-7）It is located at Valve pipe（5-1）And valve pocket（2-1-5）Between groove in, control valve seals（5-8）It is enclosed on control valve（5-2）On, control valve（5- 2）Positioned at valve pipe（5-1）In internal cavity, and can be along valve pipe（5-1）Axis direction movement, control valve spring（5-6） Positioned at valve pipe（5-1）In, one end and control valve（5-2）End face be affixed, the other end and left shell（2-2）And right shell body（2-3） Internal boss be affixed.

2. gas-driven needle-less syringe according to claim 1, it is characterised in that housing unit（2）Including inner housing（2- 1）, left shell（2-2）, right shell body（2-3）, suction nozzle（2-4）, tracheae（2-5）, connection valve（2-6）, screw（2-7）, left housing Body（2-2）And right shell body（2-3）By inner housing（2-1）It is wrapped in inside, screw（2-7）By left shell（2-2）And right shell body（2- 3）It is fixed together, suction nozzle（2-4）Pass through screw thread and inner housing（2-1）Air inlet be fixedly connected, connect valve（2- 6）It is stuck in left shell（2-2）And right shell body（2-3）Between hole in, one end is located at left shell（2-2）And right shell body（2-3）It is interior Portion, the other end are located at left shell（2-2）And right shell body（2-3）Outside, tracheae（2-5）One end and suction nozzle（2-4）It is fixed Connection, the other end is with being connected valve（2-6）It is fixedly connected.

3. gas-driven needle-less syringe according to claim 1, it is characterised in that trigger（5-4）On two rotation projections （5-4-1）Coaxially, respectively positioned at left shell（2-2）Left-handed turn trough（2-2-1）And right shell body（2-3）Dextrorotation turn trough（2-3- 1）In, trigger（5-4）Can be around rotation projection（5-4-1）Axis rotate, connecting rod（5-3）Both ends pass through link pin respectively （5-5）With trigger（5-4）And control valve（5-2）It is be hinged, cocking（5-4）When, control valve（5-2）Can be along valve pipe（5- 1）Axis direction motion.

4. gas-driven needle-less syringe according to claim 1, it is characterised in that the medicine bottle assembly（4）Including storing medicine bottle （4-1）, bottle rack（4-2）, woven hose（4-3）, screw（2-7）, utilize screw（2-7）By bottle rack（4-2）With left shell（2- 2）And right shell body（2-3）It is fixedly connected, storing medicine bottle（4-1）It is enclosed on bottle rack（4-2）On, woven hose（4-3）One end be inserted in storage Medicine bottle（4-1）Oral area, it is another to terminate at inlet valve cap（6-3）On.