CN103977481A - Pneumatic energy storage needleless syringe - Google Patents
Pneumatic energy storage needleless syringe Download PDFInfo
- Publication number
- CN103977481A CN103977481A CN201410202795.4A CN201410202795A CN103977481A CN 103977481 A CN103977481 A CN 103977481A CN 201410202795 A CN201410202795 A CN 201410202795A CN 103977481 A CN103977481 A CN 103977481A
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- cylinder barrel
- impulse member
- needleless injector
- chamber
- ratchet
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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 needleless ampoule assembly arranged on the front end cover and an impact part movably arranged in the cylinder barrel along the front and back direction; a chamber is formed between the impact part and the rear part of the cylinder barrel; the needleless syringe also comprises an air supplier for charging compressed air into the chamber; the needleless ampoule assembly at least comprises a piston rod capable of moving along the front and back direction; the impact part has an energy storage state and an impact state in the cylinder barrel; when in the energy storage state, the impact part is static, a gap exists between the front end of the impact part and the rear end of the piston rod and the air supplier supplies compressed air for the chamber; when in the impact state, the impact part forwards impacts to drive the piston rod to forwards move; the cylinder barrel is also provided with a control mechanism for switching the work states of the impact part. The needleless syringe is simple and compact in structure and has well use performances.
Description
Technical field
the present invention relates to a kind of pneumatic accumulating formula 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, the needleless injector that air pressure drives, owing to injecting continuously, labor intensity of operating staff is very low, is a kind of more satisfactory needleless injector thus.The source of Compressed Gas mainly contains two kinds, a kind of is to derive from common air compressor, if China Patent No. is 201220045555.4, patent name is the structure in " a kind of needleless injector ", another kind of derive from liquid carbon dioxide or nitrogen, through liquid--gaseous state distillation is changed and is obtained, and if China Patent No. is 201220572421.8, patent name is the structure in " people uses low pressure needleless injector ".But, the needleless injector of existing compressed gas-driven, its structure is comparatively complicated, initial acceleration when driving mechanism piston rod moves realization injection when injection is less, idle stroke is larger, cause the volume size of product larger, even there will be injecting liquid drug not enter the phenomenon in patient body, use comparatively inconvenience.
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Summary of the invention
the object of this invention is to provide a kind of simple in structure and use pneumatic accumulating formula needleless injector comparatively easily.
for achieving the above object, the technical solution used in the present invention is: a kind of pneumatic accumulating formula needleless injector, described needleless injector comprises the cylinder barrel with inner chamber, be fixedly arranged on the drive end bearing bracket of described cylinder barrel front end, be arranged on the needleless ampoule assemblies on described drive end bearing bracket, can be located at movably the impulse member in described cylinder barrel along fore-and-aft direction, described impulse member forms the chamber of sealing in described cylinder barrel and between described cylinder barrel rear portion, described needleless injector also comprises the feeder for be filled with Compressed Gas in described chamber, described needleless ampoule assemblies at least comprises the piston rod that can move along fore-and-aft direction, described impulse member has energy accumulating state and impact conditions in described cylinder barrel, when described impulse member is during in energy accumulating state, described impulse member is static, between the front end of described impulse member and the rear end of described piston rod, there is spacing, described feeder is filled with Compressed Gas in described chamber, when described impulse member is during in impact conditions, described impulse member impacts forward and drives described piston rod to move forward, and is also provided with the controlling organization for switching described impulse member duty on described cylinder barrel.
preferably, described controlling organization comprises the ratchet of being located at rotationally on described cylinder barrel, and one end of described ratchet is kept out rotationally on the front end of described impulse member or with described impulse member and is separated.
further preferably, between described ratchet and described cylinder barrel, be also provided with for driving described ratchet rotation to make it keep out the elastic component at described impulse member front end.
further preferably, described ratchet is L-type.
further preferably, the front end of described cylinder barrel offers the through hole with its intracavity inter-connection, and the end of described ratchet is plugged in described through hole rotationally.
preferably, described feeder comprises pulsometer or stores the air accumulator of Compressed Gas, the air inlet pipeline that is connected with described chamber, is located at the solenoid directional control valve between described air inlet pipeline and described pulsometer or described air accumulator.
still more preferably, when described impulse member is during in energy accumulating state, the rear end barrel of the rearward end of described impulse member and described cylinder barrel is fitted.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: pneumatic accumulating formula needleless injector of the present invention, wherein by making impulse member accumulate certain potential energy moving forward, again its release is realized to impact, and then the piston rod that drives needleless ampoule assemblies moves and realize the injection of medicinal liquid, when impulse member impacts, initial acceleration is larger, can greatly shorten idle stroke, the volume of needleless injector is significantly reduced.In addition, in this needleless injector, adopt without sealing ring blow cylinder technology, the structure of the needleless injector of this pneumatic type is simplified greatly, not only manufacturing cost significantly reduces, and injection impulsive force is extremely stable, has good serviceability.
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Brief description of the drawings
the structural representation of the needleless injector that accompanying drawing 1 is one embodiment of the invention under energy accumulating state;
the structural representation of the needleless injector that accompanying drawing 2 is another embodiment of the present invention under energy accumulating state;
wherein: 1, cylinder barrel; 11, through hole; 12, rear end cap; 13, chamber; 14, gas channel; 2, drive end bearing bracket; 3, impulse member; 31, groove; 4, controlling organization; 41, ratchet; 42, spring; 43, rotating shaft; 5, needleless ampoule assemblies; 51, piston rod; 52, medicinal liquid cavity; 6, air inlet pipeline; 7, solenoid directional control valve.
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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.
needleless injector shown in Figure 1, 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 12, be arranged on needleless ampoule assemblies 5 on drive end bearing bracket 2, can be located at movably impulse member 3 in cylinder barrel 1 inner chamber along fore-and-aft direction, the feeder of Compressed Gas can be provided, impulse member 3 forms the chamber 13 of sealing in cylinder barrel 1 and between the rear portion of cylinder barrel 1, in above-mentioned chamber 13, be filled with Compressed Gas by feeder, can drive impulse member 3 to move forward in the inner chamber of cylinder barrel 1.Needleless ampoule assemblies 5 is removably mounted on drive end bearing bracket 2, can conveniently after a shot completes, be disassembled like this replacement.This needleless ampoule assemblies 5 comprise there is the syringe of medicinal liquid cavity 52, the piston rod 51 that can move along fore-and-aft direction, the rear portion of piston rod 51 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 3 impacts forward, just drive piston rod 51 to move forward, realize injection thereby push medicinal liquid.
while setting, between impulse member 3 and cylinder barrel 1, only need to adopt matched in clearance, between the two without sealing ring, when feeder is constantly when providing Compressed Gas in chamber 13, also the gas that only has a little part is overflowed the gap between impulse member 3 and cylinder barrel 1, and lasting accumulation of energy that can impact part 3 impacts.
impulse member 3 can impact forward piston rod 51 with the impulsive force compared with large and moved forward injection when making to inject, impulse member 3 has energy accumulating state and impact conditions in cylinder barrel 1, under energy accumulating state, impulse member 3 is static, feeder is constantly inflated in the chamber of cylinder barrel 1, makes impulse member 3 constantly accumulate the potential energy moving forward; When impulse member 3 is during in impact conditions, impulse member 3 impacts forward and piston rod 51 moves forward.
when needleless ampoule assemblies 5 is arranged on drive end bearing bracket 2, its piston rod 51 rear portions are inserted in the inner chamber of cylinder barrel 1, and the front end of piston rod 51 rear ends and impulse member 3 should leave suitable distance, be that impulse member 3 is under energy accumulating state, between the rear end of its front end and piston rod 51, there is certain spacing, after impulse member 3 accumulation of energys, going to like this impact conditions piston rod 51 impacts while injection, impulse member 3 impacts have reached higher speed while extremely contacting with piston rod 51, just can be with velocity shock faster while making piston rod 51 initial, avoiding injecting medicinal liquid when initial flows out and can not enter in patient body.
on cylinder barrel 1, be also provided with the controlling organization 4 for switching shock part 3 duties.Shown in Figure 1, in the present embodiment, controlling organization 4 comprises by rotating shaft 43 is located at the ratchet 41 on cylinder barrel 1 rotationally, this ratchet 41 adopts the structure of L-type, on cylinder barrel 1, offer the through hole 11 with its intracavity inter-connection, the ratchet end of ratchet 41 front portions inserts rotationally in through hole 11 and conflicts at the front end of impulse member 3, or departs from rotationally the front end of impulse member 3.Between the rear end of ratchet 41 and cylinder barrel 1, be provided with spring 42, spring 42 should have good rigidity, so under normal conditions, produce under the effect of the elastic force that outwards promotes ratchet 41 at spring 42, the ratchet end of ratchet 41 front portions is kept out on the front end of impulse member 3, make impulse member 3 in energy accumulating state, while needing to inject after accumulation of energy finishes, by pressing ratchet 41 rear ends, the elastic force that overcomes spring 42 is rotated ratchet 41 and is departed from impulse member 3, and 3 of impulse members impact forward and piston rod 51 moves forward and realize injection.
this needleless injector in use, under original state, the ratchet end of ratchet 41 is kept out on impulse member 3, the needleless ampoule assemblies 5 that medicinal liquid is housed is mounted on drive end bearing bracket 2, the rear portion of piston rod 51 is inserted in the inner chamber of cylinder barrel 1 and is positioned at the front of impulse member 3, and the front end of the rear end of piston rod 51 and impulse member 3 maintains a certain distance, shown in Figure 1.
shown in Figure 1, feeder comprises air accumulator (not shown), the air inlet pipeline 6 being connected with chamber 13 that the pulsometer of Compressed Gas can be provided or store Compressed Gas, is located at the solenoid directional control valve 7 between air inlet pipeline 6 and pulsometer, switches the break-make situation of pulsometer or air accumulator and admission line 6 by solenoid directional control valve 7.On rear end cap 12, offer the gas channel 14 with cylinder barrel 1 intracavity inter-connection, by the space enclosing between impulse member 3 and rear end cap 12, cylinder barrel 1 inwall in essence for the chamber 13 of stores compression gas, and the tube chamber of air inlet pipeline 6, gas channel 14 these three parts formations.
in the time that needs are injected, first solenoid directional control valve 7 is switched to connected state, constantly enter Compressed Gas in the chamber of cylinder barrel 1 by the Compressed Gas in pulsometer or air accumulator through air inlet pipeline 6, the pressure in chamber constantly increases, and makes impulse member 3 constantly accumulate the potential energy moving forward; In the time that chamber 13 internal pressures increase to a certain degree, the rear end of pressing ratchet 41 is provided with the position of spring 42, ratchet 41 rotates and departs from impulse member 3, impulse member 3 just clashes into the piston rod 51 of needleless ampoule assemblies 5 with very fast acceleration, realize the injection of medicinal liquid, injection impulsive force when injection is extremely stable, can be controlled in 5%.After having injected, solenoid directional control valve 7 is switched to off-state, cylinder barrel 1 is rotated and is inverted, impulse member 3 moves backward and realizes reset under the effect of gravity.
in addition, in embodiment 2 as shown in Figure 2, impulse member 3 can be fitted on the rear end cap 12 of cylinder barrel 1 rear end, and impulse member 3 gets lodged in the oral area of gas channel 14, now, air inlet pipeline 6 and gas channel 14 are formed for the chamber 13 of stores compression gas, so just carry out stores compression gas without reserved certain space between impulse member 3 and the rear end cap 12 of cylinder barrel 1, can further reduce the volume of this needleless injector.In the present embodiment, while adopting this kind to arrange, for impulse member 3 is resetted smoothly, the rear end of impulse member 3 also offers groove 31, to avoid impulse member 3 can not conform to completely on rear end cap 12.
to sum up, pneumatic accumulating formula needleless injector of the present invention, wherein by making impulse member 3 accumulate certain potential energy moving forward, again its release is realized to impact, and then the piston rod 51 that drives needleless ampoule assemblies 5 moves and realize the injection of medicinal liquid, when impulse member 3 impacts, initial acceleration is larger, can greatly shorten idle stroke, the volume of needleless injector is significantly reduced.In addition, in this needleless injector, adopt without sealing ring blow cylinder technology, the structure of the needleless injector of this pneumatic type is simplified greatly, not only manufacturing cost significantly reduces, and injection impulsive force is extremely stable, 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 (7)
1. a pneumatic accumulating formula needleless injector, it is characterized in that: described needleless injector comprises the cylinder barrel with inner chamber, be fixedly arranged on the drive end bearing bracket of described cylinder barrel front end, be arranged on the needleless ampoule assemblies on described drive end bearing bracket, can be located at movably the impulse member in described cylinder barrel along fore-and-aft direction, described impulse member forms the chamber of sealing in described cylinder barrel and between described cylinder barrel rear portion, described needleless injector also comprises the feeder for be filled with Compressed Gas in described chamber, described needleless ampoule assemblies at least comprises the piston rod that can move along fore-and-aft direction, described impulse member has energy accumulating state and impact conditions in described cylinder barrel, when described impulse member is during in energy accumulating state, described impulse member is static, between the front end of described impulse member and the rear end of described piston rod, there is spacing, described feeder is filled with Compressed Gas in described chamber, when described impulse member is during in impact conditions, described impulse member impacts forward and drives described piston rod to move forward, and is also provided with the controlling organization for switching described impulse member duty on described cylinder barrel.
2. pneumatic accumulating formula needleless injector according to claim 1, it is characterized in that: described controlling organization comprises the ratchet of being located at rotationally on described cylinder barrel, one end of described ratchet is kept out rotationally on the front end of described impulse member or with described impulse member and is separated.
3. pneumatic accumulating formula needleless injector according to claim 2, is characterized in that: between described ratchet and described cylinder barrel, be also provided with for driving described ratchet rotation to make it keep out the elastic component at described impulse member front end.
4. pneumatic accumulating formula needleless injector according to claim 2, is characterized in that: described ratchet is L-type.
5. pneumatic accumulating formula needleless injector according to claim 2, is characterized in that: the front end of described cylinder barrel offers the through hole with its intracavity inter-connection, and the end of described ratchet is plugged in described through hole rotationally.
6. pneumatic accumulating formula needleless injector according to claim 1, is characterized in that: described feeder comprises pulsometer or stores the air accumulator of Compressed Gas, the air inlet pipeline that is connected with described chamber, is located at the solenoid directional control valve between described air inlet pipeline and described pulsometer or described air accumulator.
7. pneumatic accumulating formula needleless injector according to claim 6, is characterized in that: when described impulse member is during in energy accumulating state, the rear end barrel of the rearward end of described impulse member and described cylinder barrel is fitted.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410202795.4A CN103977481A (en) | 2014-05-14 | 2014-05-14 | Pneumatic 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 |
|---|---|---|---|
| CN201410202795.4A CN103977481A (en) | 2014-05-14 | 2014-05-14 | Pneumatic energy storage needleless syringe |
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| Publication Number | Publication Date |
|---|---|
| CN103977481A true CN103977481A (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410202795.4A Pending CN103977481A (en) | 2014-05-14 | 2014-05-14 | Pneumatic energy storage needleless syringe |
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| CN (1) | CN103977481A (en) |
Cited By (4)
| 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 |
| CN105854010A (en) * | 2016-05-11 | 2016-08-17 | 长春海基亚生物技术股份有限公司 | Hand-foot-mouth disease vaccine system for needleless injection and application |
| CN117379643A (en) * | 2023-11-17 | 2024-01-12 | 青岛力腾医药科技有限公司 | Deoxycholic acid injection device |
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| CN1951512A (en) * | 2006-09-19 | 2007-04-25 | 武汉半边天医疗技术发展有限公司 | Needle-free injection device |
| CN102397604A (en) * | 2010-09-08 | 2012-04-04 | 钟康明 | Cylinder valve separated type magnetic damping pneumatic needle-head-free syringe |
| WO2012096889A1 (en) * | 2011-01-10 | 2012-07-19 | Zogenix, Inc. | Improved needle free injectors |
| CN102743808A (en) * | 2012-07-20 | 2012-10-24 | 苏州大学 | Needleless injector |
| CN203861698U (en) * | 2014-05-14 | 2014-10-08 | 苏州大学张家港工业技术研究院 | Pneumatic energy storage type needleless injector |
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2014
- 2014-05-14 CN CN201410202795.4A patent/CN103977481A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1951512A (en) * | 2006-09-19 | 2007-04-25 | 武汉半边天医疗技术发展有限公司 | Needle-free injection device |
| CN102397604A (en) * | 2010-09-08 | 2012-04-04 | 钟康明 | Cylinder valve separated type magnetic damping pneumatic needle-head-free syringe |
| WO2012096889A1 (en) * | 2011-01-10 | 2012-07-19 | Zogenix, Inc. | Improved needle free injectors |
| CN102743808A (en) * | 2012-07-20 | 2012-10-24 | 苏州大学 | Needleless injector |
| CN203861698U (en) * | 2014-05-14 | 2014-10-08 | 苏州大学张家港工业技术研究院 | Pneumatic energy storage type needleless injector |
Cited By (5)
| 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 |
| CN105854010A (en) * | 2016-05-11 | 2016-08-17 | 长春海基亚生物技术股份有限公司 | Hand-foot-mouth disease vaccine system for needleless injection and application |
| CN117379643A (en) * | 2023-11-17 | 2024-01-12 | 青岛力腾医药科技有限公司 | Deoxycholic acid injection device |
| CN117379643B (en) * | 2023-11-17 | 2024-05-14 | 青岛力腾医药科技有限公司 | Deoxycholic acid injection device |
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Application publication date: 20140813 |
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