CN203861699U - Manpower-driven energy storage type needleless injector - Google Patents
Manpower-driven energy storage type needleless injector Download PDFInfo
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- CN203861699U CN203861699U CN201420247172.4U CN201420247172U CN203861699U CN 203861699 U CN203861699 U CN 203861699U CN 201420247172 U CN201420247172 U CN 201420247172U CN 203861699 U CN203861699 U CN 203861699U
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- cylinder barrel
- impulse member
- needleless injector
- air cavity
- storage type
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Abstract
The utility model discloses a manpower-driven energy storage type needleless injector. The needleless injector comprises a cylinder barrel, a front end cover, a needleless ampoule assembly, an impact piece and a manpower-driven air supply device, wherein the cylinder barrel is provided with an inner cavity, the front end cover is fixedly arranged at the front end of the cylinder barrel, the needleless ampoule assembly is installed on the front end cover, the impact piece is arranged in the cylinder barrel in a front-and-back movable manner, a closed chamber is formed in the cylinder barrel and between the impact piece and the back part of the cylinder barrel, the manpower-driven air supply device is used for feeding compressed air into the chamber, the needleless ampoule assembly at least comprises a piston rod capable of moving in a front-and-back manner, and a control mechanism for switching working states of the impact piece is also arranged on the cylinder barrel. According to the needleless injector, the impact piece accumulates certain potential energy for forward movement and then releases the potential energy to realize impact to drive the piston rod of the needleless ampoule assembly to move to inject liquid medicines, and the initial acceleration of the impact piece is higher during impact, so that the idle travel can be greatly shortened, and the size of the needleless injector can be reduced substantially.
Description
Technical field
this utility model relates to a kind of manually driven energy-storage type needleless injector.
Background technology
needleless injection technology is not by syringe needle when 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, solved traditional injection because syringe needle thrusts the series of problems that body brings, as: pain, hemorrhage, infection, tissue injury, mental pressure etc.; Meanwhile, through the medicine of Needleless injection, in more disperse of in-house distribution, be conducive to the absorption of medicine, 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, manually driven needleless injector, the principle of general using spring energy-storage, moment percussion and working, if China Patent No. is ZL201320568118.5, patent name is the structure in " needleless injector ", its advantage be simple in structure, injection operation more for convenience; Its major defect is, the percussion injection device of syringe is separated with the device of spring reset accumulation of energy, and reset operation is inconvenience extremely, the inadaptable occasion that needs continuous fast injection.
Summary of the invention
the purpose of this utility model is to provide a kind of simple in structure and use manually driven energy-storage type needleless injector comparatively easily.
for achieving the above object, the technical solution adopted in the utility model is: a kind of manually driven energy-storage type 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, between described impulse member and described cylinder barrel rear portion, be provided with the chamber of sealing, described needleless injector also comprises for be filled with the manpower driving feeder of Compressed Gas to 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 manpower driving feeder is filled with 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 for switching the controlling organization of 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 manpower driving feeder comprises the body that is provided with gas channel, on described body, be located at the first check valve that described gas channel is separated into the first air cavity and the second air cavity, the second check valve and overflow valve, the external world arranges to described the first air cavity unilaterally connected by described the first check valve, described the first air cavity arranges to described the second air cavity unilaterally connected by described the second check valve, the described chamber phase airflow connection of described the second air cavity and described cylinder barrel, on described body, be also provided with and can make extraneous air enter the air compressing mechanism in described the first air cavity by described the first check valve.
further preferably, described body is the rear end barrel of described cylinder barrel, described air compressing mechanism comprise be located at the plunger shaft that is connected with described the first air cavity on described body, be located at piston in described plunger shaft movably, for providing the spring of described piston along moving direction elastic-restoring force, one end to be connected to rotationally on described cylinder barrel for driving described piston at the mobile operating handle of described plunger shaft.
further preferably, described air compressing mechanism comprise be located at the plunger shaft that is connected with described the first air cavity on described body, be located at piston in described plunger shaft movably, for providing the spring of described piston along moving direction elastic-restoring force, one end to be connected to rotationally on described body for driving described piston at the mobile operating pedal of described plunger shaft, described the second air cavity is connected by air inlet pipeline with the described chamber of described cylinder barrel.
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.
utilization due to technique scheme, this utility model compared with prior art has following advantages: manually driven energy-storage type needleless injector of the present utility model, 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.This needleless injector is simple in structure, easy to use.
Accompanying drawing explanation
accompanying drawing 1 is the needleless injector of this utility model embodiment 1 structural representation under energy accumulating state;
accompanying drawing 2 is the needleless injector of this utility model embodiment 1 structural representation under impact conditions;
accompanying drawing 3 is the needleless injector of this utility model embodiment 2 structural representation under energy accumulating state;
wherein: 1, cylinder barrel; 11, chamber; 12, through hole; 13, rear end cap; 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, manpower driving feeder; 61, body; 62, the first check valve; 63, the first air cavity; 64, the second check valve; 65, the second air cavity; 66, overflow valve; 67, rear cock body; 7, air compressing mechanism; 71, piston; 72, spring; 73, operating handle; 74, operating pedal.
The specific embodiment
below in conjunction with accompanying drawing and specific embodiment, the technical solution of the utility model 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 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, for compressed-air actuated manpower driving feeder 6 is provided, impulse member 3 forms the chamber 11 of sealing in cylinder barrel 1 and between the rear portion of cylinder barrel 1, by manpower driving feeder 6, in chamber 11, be filled with compressed air, 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 replacement like this.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, when impulse member 3 impacts forward, just drive piston rod 51 to move forward, thereby push medicinal liquid, realize injection.
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, manpower driving feeder 6 is constantly filled with compressed air in the chamber 11 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 injecting, 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 Fig. 1, Fig. 2, 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 12 with its intracavity inter-connection, the ratchet end of ratchet 41 front portions inserts rotationally in through hole 12 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, at spring 42, produce under the effect of the elastic force that outwards promotes ratchet 41, 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.
shown in Fig. 1, Fig. 2, manpower driving feeder 6 comprises the body 61 that is provided with gas channel, the rear end barrel that here this body 61 is cylinder barrel 1.Body 61 is provided with for said flow passage being separated into the first check valve 62, the second check valve 64 and the overflow valve 66 of the first air cavity 63 and the second air cavity 65, extraneous by the first check valve 62 to the first air cavity 63 unilaterally connecteds arrange, the first air cavity 63 by the second check valve 64 to the second air cavity 65 unilaterally connecteds arrange, the chamber 11 phase airflow connections of the second air cavity 65 and cylinder barrel 1, overflow pressure relief when 66 of overflow valves surpass particular value for the second air cavity 65 internal gas pressures.
on body 1, be also provided with and can make extraneous air enter the air compressing mechanism 7 in the first air cavity 63 by the first check valve 62, this air compressing mechanism 7 comprise be located at the plunger shaft that is connected with the first air cavity 63 on body 61, be located at piston 71 in above-mentioned plunger shaft movably, for providing the spring 72 of piston 71 along moving direction elastic-restoring force, one end to be connected to rotationally on cylinder barrel 1 for driven plunger 71 at the mobile operating handle 73 of plunger shaft.By holding operation handle 73, drive its rotation, piston 72 is moved, thereby to extraneous air being blasted in the first air cavity 63, the pressure in the first air cavity 63 constantly increases, and the gas in the first air cavity 63 is entered the second air cavity 65 and entered in the chamber 11 of cylinder barrel 1 by the second check valve 64.Constantly pressing operation handle 73 just can make the air pressure in chamber 11 constantly raise and accumulate the potential energy moving forward to impulse member 3.On body 61, be also provided with for stopping up the rear cock body 67 of relieving device, after impact has been injected, can the gas in chamber 11 discharged by relieving device by extracting rear cock body 67, and then make impulse member 3 move and return back to the position before impact backward.
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 place ahead 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.
during injection, first by holding operation handle 73, constantly in the chamber 11 of cylinder barrel 1, be filled with compressed air, pressure in chamber 11 constantly increases, make impulse member 3 constantly accumulate the potential energy moving forward, when chamber 11 internal pressures increase to certain amplitude, the rear end of pressing ratchet 41 is provided with the position of spring 42, ratchet 41 rotates and disengaging 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, shown in Figure 2.After having injected, extract rear cock body 67, discharge the gas of cylinder barrel 1 inner cavity chamber 11, impulse member 3 just moves backward and realizes reset.
because impulse member 3 regularly impacts in accumulation of energy to again, when it impacts, initial acceleration can be very large, can greatly shorten idle stroke, and the volume of needleless injector is significantly reduced, and meanwhile, only needs pressing operation handle 73 during operation, easy to use.
embodiment 2
participate in the needleless injector shown in Fig. 3, the difference part of itself and embodiment 1 is mainly the setting of manpower driving feeder 6.In the present embodiment, the body 61 of manpower driving feeder 6 and the separated setting of cylinder barrel 1, and on manpower driving feeder 6, the second chamber 65 is connected with the chamber 11 of cylinder barrel 1 by air inlet pipeline 8, in addition, in air compressing mechanism 7,73 of operating handles in embodiment 1 replace with one end and are located at rotationally the operating pedal 74 on body 61, like this, when operation, operator only needs to tramp with one's feet to step in the chamber 11 that operating pedal 74 can make cylinder barrel 1 and is filled with gas and has made impulse member 3 accumulation of energys, operates more laborsaving.
in addition, in the present embodiment, owing to being connected with air inlet pipeline 8, the tube chamber of this air inlet pipeline 8 can be formed for the chamber of storing compressed air, therefore, and in the present embodiment, impulse member 3 can be fitted on the rear end cap 13 of cylinder barrel 1 rear end, can further reduce like this volume of this needleless injector.Meanwhile, the rear end of impulse member 3 is blocked on the oral area of rear end cap 13 overdraught passages, can play airtight effect to above-mentioned chamber, make its stores compression gas constantly, avoid Compressed Gas to overflow, the sealing setting between impulse member 3 and cylinder barrel 1, structure is simpler, and processing technology is also better.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 not conform to completely on rear end cap 13.
to sum up, manually driven energy-storage type needleless injector of the present utility model, 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.This needleless injector is simple in structure, easy to use.
above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to this utility model spirit change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (9)
1. a manually driven energy-storage type 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, between described impulse member and described cylinder barrel rear portion, be provided with the chamber of sealing, described needleless injector also comprises for be filled with the manpower driving feeder of Compressed Gas to 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 manpower driving feeder is filled with 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 for switching the controlling organization of described impulse member duty on described cylinder barrel.
2. manually driven energy-storage type 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. manually driven energy-storage type 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. manually driven energy-storage type needleless injector according to claim 2, is characterized in that: described ratchet is L-type.
5. manually driven energy-storage type 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. manually driven energy-storage type needleless injector according to claim 1, it is characterized in that: described manpower driving feeder comprises the body that is provided with gas channel, on described body, be located at the first check valve that described gas channel is separated into the first air cavity and the second air cavity, the second check valve and overflow valve, the external world arranges to described the first air cavity unilaterally connected by described the first check valve, described the first air cavity arranges to described the second air cavity unilaterally connected by described the second check valve, the described chamber phase airflow connection of described the second air cavity and described cylinder barrel, on described body, be also provided with and can make extraneous air enter the air compressing mechanism in described the first air cavity by described the first check valve.
7. manually driven energy-storage type needleless injector according to claim 6, it is characterized in that: the rear end barrel that described body is described cylinder barrel, described air compressing mechanism comprise be located at the plunger shaft that is connected with described the first air cavity on described body, be located at piston in described plunger shaft movably, for providing the spring of described piston along moving direction elastic-restoring force, one end to be connected to rotationally on described cylinder barrel for driving described piston at the mobile operating handle of described plunger shaft.
8. manually driven energy-storage type needleless injector according to claim 6, it is characterized in that: described air compressing mechanism comprise be located at the plunger shaft that is connected with described the first air cavity on described body, be located at piston in described plunger shaft movably, for providing the spring of described piston along moving direction elastic-restoring force, one end to be connected to rotationally on described body for driving described piston at the mobile operating pedal of described plunger shaft, described the second air cavity is connected by air inlet pipeline with the described chamber of described cylinder barrel.
9. manually driven energy-storage type needleless injector according to claim 8, 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247172.4U CN203861699U (en) | 2014-05-14 | 2014-05-14 | Manpower-driven energy storage type needleless injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247172.4U CN203861699U (en) | 2014-05-14 | 2014-05-14 | Manpower-driven energy storage type needleless injector |
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| Publication Number | Publication Date |
|---|---|
| CN203861699U true CN203861699U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420247172.4U Withdrawn - After Issue CN203861699U (en) | 2014-05-14 | 2014-05-14 | Manpower-driven energy storage type needleless injector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977480A (en) * | 2014-05-14 | 2014-08-13 | 苏州大学张家港工业技术研究院 | Manpower-driven energy storage needleless syringe |
| CN105477749A (en) * | 2016-01-13 | 2016-04-13 | 北京步腾医学科技有限公司 | Disposable needle-free spring syringe |
| CN106109052A (en) * | 2016-08-23 | 2016-11-16 | 徐俊鸽 | A kind of needleless injector for animals |
| CN115737992A (en) * | 2022-11-24 | 2023-03-07 | 深圳市博迈本尚医疗科技有限公司 | Needleless injector |
-
2014
- 2014-05-14 CN CN201420247172.4U patent/CN203861699U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977480A (en) * | 2014-05-14 | 2014-08-13 | 苏州大学张家港工业技术研究院 | Manpower-driven energy storage needleless syringe |
| 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 |
| CN103977480B (en) * | 2014-05-14 | 2016-06-15 | 苏州大学张家港工业技术研究院 | A kind of manually driven energy-storage type needleless injector |
| CN105477749A (en) * | 2016-01-13 | 2016-04-13 | 北京步腾医学科技有限公司 | Disposable needle-free spring syringe |
| CN106109052A (en) * | 2016-08-23 | 2016-11-16 | 徐俊鸽 | A kind of needleless injector for animals |
| CN115737992A (en) * | 2022-11-24 | 2023-03-07 | 深圳市博迈本尚医疗科技有限公司 | Needleless injector |
| CN115737992B (en) * | 2022-11-24 | 2024-06-07 | 深圳市本尚医疗科技有限公司 | Needleless injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141008 Effective date of abandoning: 20160615 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |