CN103977484A - Pneumatic magnetic energy storage needleless syringe - Google Patents
Pneumatic magnetic energy storage needleless syringe Download PDFInfo
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- CN103977484A CN103977484A CN201410203741.XA CN201410203741A CN103977484A CN 103977484 A CN103977484 A CN 103977484A CN 201410203741 A CN201410203741 A CN 201410203741A CN 103977484 A CN103977484 A CN 103977484A
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- rear end
- needleless injector
- cylinder barrel
- impulse member
- compressed air
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Abstract
The invention discloses a pneumatic magnetic energy storage needleless syringe. The syringe comprises a cylinder barrel with an inner cavity, a front end cover fixedly arranged at the front end of the cylinder barrel, a rear end cover fixedly arranged at the rear end of the cylinder barrel, a needleless ampoule assembly arranged on the front end cover and an impact part movably arranged in the inner cavity of the cylinder barrel along the front and back direction; the rear end cover is fixedly provided with a magnet capable of magnetically attracting the impact part; the rear end cover is also provided with an air flow passage communicated with the inner cavity of the cylinder barrel; a seal part capable of plugging the air flow passage is fixedly arranged at the rear part of the impact part; the needleless syringe also comprises an air source device for charging compressed air into the air flow passage; the needleless ampoule assembly at least comprises a piston rod capable of moving front and back. The compressed air is charged into the air flow passage by the air source device, and when the air pressure value in the air flow passage achieves a certain value, the impact part overcomes the magnetic force of the magnet to forwards impact to realize the injection process. The needleless syringe is simple in structure and excellent in manufacturing process and has well use performances.
Description
Technical field
the present invention relates to a kind of pneumatic magnetic force energy-storage type needleless injector.
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Background technology
needleless injection technology is not by syringe needle in the time carrying out drug injection, liquid medicine with ultra-fine, at a high speed, the mode of straight line ejection high-pressure spray directly enters body tissue, solve traditional injection because syringe needle thrusts the series of problems that body brings, as: pain, hemorrhage, infection, tissue injury, mental pressure etc.; Meanwhile, in more disperse of in-house distribution, be conducive to the absorption of medicine through the medicine of Needleless injection, inject for a long time skin and be difficult for scleroma.Therefore, Needleless injection technology has broad application prospects, and is particularly useful for child vaccine-inoculating and diabetics.
in prior art, some needleless injectors often adopt air pressure to drive to realize injection, and it is owing to injecting continuously, and labor intensity of operating staff is very low, are a kind of more satisfactory needleless injector thus.The source of Compressed Gas mainly contains two kinds, and the one, derive from common air compressor, if China Patent No. is 201220045555.4, patent name is the structure in " a kind of needleless injector "; The 2nd, derive from liquid carbon dioxide or nitrogen, obtain through the distillation conversion of liquid state-gaseous state, if China Patent No. is 201220572421.8, patent name is the structure in " people uses low pressure needleless injector ".
but in the needleless injector of current compressed gas-driven, mainly also there is following shortcoming: 1, structure is extremely complicated, and the accuracy of manufacture requires high, and cost is high; 2,, for gas is sealed, between cylinder piston and cylinder barrel, the general sealing ring that adopts seals, or the minimum movable sealing of fit clearance.Front a kind of sealing means cost is lower, but piston is by static friction in the process of dynamic friction, and its friction factor all can change at every turn, amplitude of variation is generally in 20% left and right, this just causes cylinder piston impulsive force each time unstable, naturally causes injection depth to have deeply to have shallow; Rear a kind of sealing means, the cooperation between piston and inner hole of cylinder is extremely accurate, generally need to adopt facing-up technique just can reach, and not only anufacturability is bad, and the foreign body such as fine dust easily enters, thereby causes the operational failure of syringe.
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Summary of the invention
the object of this invention is to provide a kind of simple in structure and pneumatic magnetic force energy-storage type needleless injector that processing technology is good.
for achieving the above object, the technical solution used in the present invention is: a kind of pneumatic magnetic force energy-storage type needleless injector, comprise the cylinder barrel with inner chamber, be fixedly arranged on the drive end bearing bracket of described cylinder barrel front end, be fixedly arranged on the rear end cap of described cylinder barrel rear end, be arranged on the needleless ampoule assemblies on described drive end bearing bracket, can be located at movably the impulse member in described inner cavity of cylinder along fore-and-aft direction, on described rear end cap, be fixedly provided with can magnetic attraction described in the Magnet of impulse member, on described rear end cap, also offer the gas channel with the intracavity inter-connection of described cylinder barrel, the rear portion of described impulse member is installed with the sealing member of the oral area that can stop up described gas channel, described needleless injector also comprises the compressed air source unit for be filled with Compressed Gas to described gas channel, described needleless ampoule assemblies at least comprises the piston rod that can move forward and backward, when described impulse member is during with described Magnet phase magnetic attraction, between the front end of described impulse member and the rear end of described piston rod, there is spacing.
preferably, described needleless injector also comprises the electrical control gear for controlling described compressed air source unit duty.
further preferably, described electrical control gear at least comprises for controlling the air inlet control knob that described compressed air source unit inflates to described gas channel, the control knob of bleeding of bleeding to described gas channel for controlling described compressed air source unit.
as a kind of concrete embodiment, described compressed air source unit at least comprises pulsometer, is removably connected to the air inlet pipeline between described pulsometer and described rear end cap.
preferably, described impulse member and described piston rod coaxial inner conductor arrange.
for achieving the above object, the another kind of technical scheme that the present invention adopts is:
a kind of pneumatic magnetic force energy-storage type needleless injector, comprise the cylinder barrel with inner chamber, be fixedly arranged on the drive end bearing bracket of described cylinder barrel front end, be fixedly arranged on the rear end cap of described cylinder barrel rear end, be arranged on the needleless ampoule assemblies on described drive end bearing bracket, be located at regularly the fixed block in described inner cavity of cylinder, described fixed block is divided into the first separate chamber and the second chamber by the inner chamber of described cylinder barrel along fore-and-aft direction, described needleless injector also comprises and can be located at movably the impulse member in described the first chamber along fore-and-aft direction, on described fixed block, be fixedly provided with can magnetic attraction described in the Magnet of impulse member, on described fixed block, offer the gas channel that is communicated with described the first chamber and described the second chamber, the rear portion of described impulse member is installed with the sealing member of the oral area that can stop up described gas channel, on described rear end cap, offer air inlet, described needleless injector also comprises the compressed air source unit for be filled with Compressed Gas to described air inlet, described needleless ampoule assemblies at least comprises the piston rod that can move forward and backward, when described impulse member is during with described Magnet phase magnetic attraction, between the front end of described impulse member and the rear end of described piston rod, there is spacing.
preferably, described needleless injector also comprises the electrical control gear for controlling described compressed air source unit duty.
further preferably, described electrical control gear at least comprises for controlling the air inlet control knob that described compressed air source unit inflates to described gas channel, the control knob of bleeding of bleeding to described gas channel for controlling described compressed air source unit.
as a kind of concrete embodiment, described compressed air source unit at least comprises pulsometer, is removably connected to the air inlet pipeline between described pulsometer and described rear end cap.
preferably, described impulse member and described piston rod coaxial inner conductor arrange.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: pneumatic magnetic force energy-storage type needleless injector of the present invention, in gas channel, be filled with Compressed Gas by compressed air source unit, the atmospheric pressure of this compressed air in gas channel acts on impulse member and makes it have the trend of continuous reach, in the time that the atmospheric pressure in gas channel reaches certain value and makes to act on driving force on impulse member and overcome Magnet to its magnetic force, impulse member departs from Magnet and impacts forward, and then the piston rod that drives needleless ampoule assemblies moves forward and realizes the injection of medicinal liquid.In this needleless injector, because impulse member first impacts after accumulation of energy again, its initial acceleration is larger, has shortened so significantly idle stroke, and the volume of needleless injector is significantly reduced.While setting, also can, according to application scenario, by selecting the Magnet with different magnetic force, impact the size of impulsive force while injection thereby adjust impulse member, and then meet injection needs.This needleless injector is simple in structure, and processing technology is good, and has good serviceability.
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Brief description of the drawings
accompanying drawing 1 is the needleless injector of the embodiment of the present invention 1 structural representation under energy accumulating state;
accompanying drawing 2 is the needleless injector of the embodiment of the present invention 1 structural representation under impact conditions;
accompanying drawing 3 is the needleless injector of the embodiment of the present invention 2 structural representation under energy accumulating state;
wherein: 1, cylinder barrel; 11, the first chamber; 12, the second chamber; 2, drive end bearing bracket; 3, rear end cap; 31, gas channel; 32, air inlet; 4, impulse member; 5, sealing member; 6, Magnet; 7, needleless ampoule assemblies; 71, piston rod; 72, medicinal liquid cavity; 8, joint; 9, air inlet control knob; 10, the control knob of bleeding; 13, fixed block.
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Detailed description of the invention
below in conjunction with accompanying drawing and specific embodiment, technical scheme of the present invention is further elaborated.
below in the description about direction, be all that the direction that operator observes during according to injection operation defines, wherein dispensing end is front, otherwise after being.
embodiment 1
referring to the needleless injector shown in Fig. 1, Fig. 2, comprise have inner chamber cylinder barrel 1, be fixedly arranged on cylinder barrel 1 front end drive end bearing bracket 2, be fixedly arranged on cylinder barrel 1 rear end rear end cap 3, be arranged on needleless ampoule assemblies 7 on drive end bearing bracket 2, can be located at movably impulse member 4 in cylinder barrel 1 inner chamber along fore-and-aft direction, for the compressed air source unit (not shown) of Compressed Gas is provided.
shown in Fig. 1, Fig. 2, on rear end cap 3, be fixedly provided with can magnetic attraction impulse member 4 Magnet 6, on rear end cap 3, also offer the gas channel 31 with the intracavity inter-connection of cylinder barrel 1, the rear portion of impulse member 4 offers a groove, the sealing member 5 that is installed with the oral area that can stop up gas channel 31 in this groove, the seal 5 can adopt block rubber.
needleless ampoule assemblies 7 is removably mounted on drive end bearing bracket 2, is removed replacement after facilitating like this shot complete.This needleless ampoule assemblies 7 comprise there is the syringe of medicinal liquid cavity 72, the piston rod 71 that can move along fore-and-aft direction, piston rod 71 and impulse member 4 coaxial inner conductor settings, the rear portion of piston rod 71 has at least part to be inserted in the inner chamber of cylinder barrel 1 by the opening of cylinder barrel 1 front end, in the time that impulse member 4 impacts forward, just drive piston rod 71 to move forward, realize injection thereby push medicinal liquid.
when needleless ampoule assemblies 7 is arranged on drive end bearing bracket 2, its piston rod 71 rear portions are inserted in the inner chamber of cylinder barrel 1, and the front end of piston rod 71 rear ends and impulse member 4 should leave suitable distance, be impulse member 4 under static state, between the rear end of its front end and piston rod 71, there is certain spacing, like this in the time that impulse member 4 goes to the 71 impact injection of impact conditions piston rod from resting state, impulse member 4 impacts have reached higher speed while extremely contacting with piston rod 71, just can be with velocity shock faster while making piston rod 71 initial, avoiding injecting medicinal liquid when initial flows out and can not enter in patient body.
shown in Fig. 1, Fig. 2, needleless injector also comprises the compressed air source unit in order to pass into Compressed Gas in gas channel 31, compressed air source unit at least comprises pulsometer (not shown), is removably connected to the air inlet pipeline (not shown) between described pulsometer and described rear end cap 3, air inlet pipeline is removably connected on rear end cap 3 by joint 8, and the tube chamber of air inlet pipeline and gas channel 31 are communicated with the airtight air storing cavity for stores compression gas of formation.Pulsometer is filled with Compressed Gas in described air storing cavity, when the air pressure in air storing cavity, be that the driving force of the impact part 4 that produces of air pressure in gas channel 31 is while exceeding the magneticaction of Magnet 6 impact parts 4, impulse member 4 depart from Magnet 6 impact forward promote piston rod 71 move forward, complete the injection of medicinal liquid.
needleless injector also comprises controlling the electrical control gear (not shown) of compressed air source unit duty, and this electrical control gear at least comprises for controlling compressed air source unit to the air inlet control knob 9 of gas channel 31 inflations, the control knob 10 of bleeding of bleeding to described gas channel 31 for controlling described compressed air source unit.This electrical control gear also comprises overrun control (not shown), wherein by being set, delay switch controls, press in gas control knob 9 when for the first time, now delay switch closure, compressed air source unit is in preparing for gaseity, if again press air inlet control knob 9 in set time range, compressed air source unit is filled with Compressed Gas in gas channel 31, in the time that the air pressure of gas channel 31 exceedes the magneticaction of Magnet 6 impact parts 4, impulse member 4 departs from Magnet 6 to be impacted forward, the piston rod 71 promoting in needleless ampoule assemblies 7 moves forward, push medicinal liquid and complete injection, after injection, by lower pumping control knob 10, compressed air source unit is bled to gas channel 31, and impulse member 4 is replied backward under the magneticaction of Magnet 6, again with Magnet 6 phase adhesives.
in the process of making in this needleless injector, by selecting the Magnet 6 with different magnetic force, can make varying in size of potential energy that impulse member 4 accumulates, and then impulse member 4 can be impacted with different speed in the time impacting.Like this, the impact injection effect of this needleless injector can be adjusted according to its applied field is incompatible, and then makes it meet the injection demand of different occasions.
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embodiment 2
shown in Figure 3, the difference of the present embodiment and embodiment 1 is the setting of air storing cavity.In the present embodiment, in the inner chamber of cylinder barrel 1, be also provided with fixed block 13, fixed block 13 is separated into the first separate chamber 11 and the second chamber 12 by the inner chamber of cylinder barrel 1 along fore-and-aft direction, impulse member 4 is positioned at the first chamber 11, Magnet 6 is installed in the front portion of fixed block 13, on fixed block 13, offer the gas channel 31 that is communicated with the first chamber 11 and the second chamber 12, on rear end cap 3, offer air inlet 32, admission line on compressed air source unit is connected on rear end cap by joint, the tube chamber of admission line, air inlet 32, between the second chamber 12 and gas channel 31, be formed for the air storing cavity of stores compression gas.Can effectively be lifted at like this gas-storing capacity of stores compression gas in accumulation of energy process, make impulse member 4 can accumulate more potential energy, thereby impulse member 4 can be impacted with initial acceleration faster in the time impacting, and then make this needleless injector can be used for remote injection, as the injection for to animal.
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to sum up, pneumatic magnetic force energy-storage type needleless injector of the present invention, in gas channel 31, be filled with Compressed Gas by compressed air source unit, when the driving force of impact part 4 producing when gas channel 31 internal gas pressures exceedes the magneticaction of Magnet 6 impact parts 4, impulse member 4 departs from Magnet 6 to be impacted forward, promotes that piston rod 71 in needleless ampoule assemblies 7 moves forward and the injection that realizes medicinal liquid.When impulse member 4 impacts, initial acceleration is larger, can greatly shorten idle stroke, and the volume of needleless injector is significantly reduced.While setting, also can, according to application scenario, by selecting the Magnet with different magnetic force, impact the size of impulsive force while injection thereby adjust impulse member, and then meet injection needs.This needleless injector is simple in structure, and processing technology is good, and has good serviceability.
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above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. a pneumatic magnetic force energy-storage type needleless injector, it is characterized in that: comprise the cylinder barrel with inner chamber, be fixedly arranged on the drive end bearing bracket of described cylinder barrel front end, be fixedly arranged on the rear end cap of described cylinder barrel rear end, be arranged on the needleless ampoule assemblies on described drive end bearing bracket, can be located at movably the impulse member in described inner cavity of cylinder along fore-and-aft direction, on described rear end cap, be fixedly provided with can magnetic attraction described in the Magnet of impulse member, on described rear end cap, also offer the gas channel with the intracavity inter-connection of described cylinder barrel, the rear portion of described impulse member is installed with the sealing member of the oral area that can stop up described gas channel, described needleless injector also comprises the compressed air source unit for be filled with Compressed Gas to described gas channel, described needleless ampoule assemblies at least comprises the piston rod that can move forward and backward, when described impulse member is during with described Magnet phase magnetic attraction, between the front end of described impulse member and the rear end of described piston rod, there is spacing.
2. pneumatic magnetic force energy-storage type needleless injector according to claim 1, is characterized in that: described needleless injector also comprises the electrical control gear for controlling described compressed air source unit duty.
3. pneumatic magnetic force energy-storage type needleless injector according to claim 2, is characterized in that: described electrical control gear at least comprises for controlling the air inlet control knob that described compressed air source unit inflates to described gas channel, the control knob of bleeding of bleeding to described gas channel for controlling described compressed air source unit.
4. according to the pneumatic magnetic force energy-storage type needleless injector described in claim 1 or 2 or 3, it is characterized in that: described compressed air source unit at least comprises pulsometer, is removably connected to the air inlet pipeline between described pulsometer and described rear end cap.
5. pneumatic magnetic force energy-storage type needleless injector according to claim 1, is characterized in that: described impulse member and described piston rod coaxial inner conductor arrange.
6. a pneumatic magnetic force energy-storage type needleless injector, it is characterized in that: comprise the cylinder barrel with inner chamber, be fixedly arranged on the drive end bearing bracket of described cylinder barrel front end, be fixedly arranged on the rear end cap of described cylinder barrel rear end, be arranged on the needleless ampoule assemblies on described drive end bearing bracket, be located at regularly the fixed block in described inner cavity of cylinder, described fixed block is divided into the first separate chamber and the second chamber by the inner chamber of described cylinder barrel along fore-and-aft direction, described needleless injector also comprises and can be located at movably the impulse member in described the first chamber along fore-and-aft direction, on described fixed block, be fixedly provided with can magnetic attraction described in the Magnet of impulse member, on described fixed block, offer the gas channel that is communicated with described the first chamber and described the second chamber, the rear portion of described impulse member is installed with the sealing member of the oral area that can stop up described gas channel, on described rear end cap, offer air inlet, described needleless injector also comprises the compressed air source unit for be filled with Compressed Gas to described air inlet, described needleless ampoule assemblies at least comprises the piston rod that can move forward and backward, when described impulse member is during with described Magnet phase magnetic attraction, between the front end of described impulse member and the rear end of described piston rod, there is spacing.
7. pneumatic magnetic force energy-storage type needleless injector according to claim 6, is characterized in that: described needleless injector also comprises the electrical control gear for controlling described compressed air source unit duty.
8. pneumatic magnetic force energy-storage type needleless injector according to claim 7, is characterized in that: described electrical control gear at least comprises for controlling the air inlet control knob that described compressed air source unit inflates to described gas channel, the control knob of bleeding of bleeding to described gas channel for controlling described compressed air source unit.
9. according to the pneumatic magnetic force energy-storage type needleless injector described in claim 6 or 7 or 8, it is characterized in that: described compressed air source unit at least comprises pulsometer, is removably connected to the air inlet pipeline between described pulsometer and described rear end cap.
10. pneumatic magnetic force energy-storage type needleless injector according to claim 1, is characterized in that: described impulse member and described piston rod coaxial inner conductor arrange.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203741.XA CN103977484A (en) | 2014-05-14 | 2014-05-14 | Pneumatic magnetic energy storage needleless syringe |
| PCT/CN2015/078580 WO2015172686A1 (en) | 2014-05-14 | 2015-05-08 | Pneumatic accumulating needleless syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203741.XA CN103977484A (en) | 2014-05-14 | 2014-05-14 | Pneumatic magnetic energy storage needleless syringe |
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| CN103977484A true CN103977484A (en) | 2014-08-13 |
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| CN201410203741.XA Pending CN103977484A (en) | 2014-05-14 | 2014-05-14 | Pneumatic magnetic energy storage needleless syringe |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172683A1 (en) * | 2014-05-14 | 2015-11-19 | 苏州大学张家港工业技术研究院 | Manually operated energy storing needleless injector |
| WO2015172686A1 (en) * | 2014-05-14 | 2015-11-19 | 苏州大学张家港工业技术研究院 | Pneumatic accumulating needleless syringe |
| CN107297001A (en) * | 2017-08-02 | 2017-10-27 | 江苏丞宇米特医疗科技有限公司 | A kind of fixed dosage single injection gas-driven needle-less syringe |
| CN107308525A (en) * | 2017-08-02 | 2017-11-03 | 江苏丞宇米特医疗科技有限公司 | A kind of adjustable single of dosage takes out medicine multiple injection gas-driven needle-less syringe |
| CN110279914A (en) * | 2019-08-09 | 2019-09-27 | 江苏丞宇米特医疗科技有限公司 | Powder charge multiple injection needleless injector |
| CN110841150A (en) * | 2019-11-20 | 2020-02-28 | 泰州起点医疗科技有限公司 | Drug delivery device |
| CN111388807A (en) * | 2020-04-07 | 2020-07-10 | 湖南省绿洲惠康发展有限公司 | Pneumatic needleless injector |
| CN111481774A (en) * | 2019-01-25 | 2020-08-04 | 凯联医疗科技(上海)有限公司 | Trace medicine needleless injector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172683A1 (en) * | 2014-05-14 | 2015-11-19 | 苏州大学张家港工业技术研究院 | Manually operated energy storing needleless injector |
| WO2015172686A1 (en) * | 2014-05-14 | 2015-11-19 | 苏州大学张家港工业技术研究院 | Pneumatic accumulating needleless syringe |
| CN107297001A (en) * | 2017-08-02 | 2017-10-27 | 江苏丞宇米特医疗科技有限公司 | A kind of fixed dosage single injection gas-driven needle-less syringe |
| CN107308525A (en) * | 2017-08-02 | 2017-11-03 | 江苏丞宇米特医疗科技有限公司 | A kind of adjustable single of dosage takes out medicine multiple injection gas-driven needle-less syringe |
| CN111481774A (en) * | 2019-01-25 | 2020-08-04 | 凯联医疗科技(上海)有限公司 | Trace medicine needleless injector |
| CN110279914A (en) * | 2019-08-09 | 2019-09-27 | 江苏丞宇米特医疗科技有限公司 | Powder charge multiple injection needleless injector |
| CN110841150A (en) * | 2019-11-20 | 2020-02-28 | 泰州起点医疗科技有限公司 | Drug delivery device |
| CN111388807A (en) * | 2020-04-07 | 2020-07-10 | 湖南省绿洲惠康发展有限公司 | Pneumatic needleless injector |
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Application publication date: 20140813 |