CN202526706U

CN202526706U - Needleless syringe

Info

Publication number: CN202526706U
Application number: CN2011205575168U
Authority: CN
Inventors: 陈瑜; 潘泓; 刘金华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-28
Filing date: 2011-12-28
Publication date: 2012-11-14
Anticipated expiration: 2021-12-28

Abstract

The utility model provides a needleless syringe, which belongs to the technical field of syringes. The needleless syringe is composed of a pusher and a disposable aseptic component. The pusher comprises a thread bushing, a push shot tube, a high pressure gas access system, a sliding block, an emitter and a resetting means. The sliding block is disposed in the push shot tube in a manner of slide sealing, and forms a high-pressure cavity with a high-pressure pushing rod. The high pressure gas access system is communicated with the high-pressure cavity and external atmosphere, and can control the opening and closing of the high-pressure cavity. The emitter controls the motion of the sliding block. The resetting means comprises a turn button terminal and a cam terminal which are in a pin joint, and is used for resetting the sliding block. The needleless syringe is advantageous in that the structure is simple; the injection process is convenient and injection speed is fast; pain is smaller and use is safer.

Description

A kind of needleless injector

Affiliated technical field

This utility model relates to the injector technology field, especially a kind of needleless injector.

Background technology

Common syringe has the syringe of aperture by front end and the piston core bar that matches is formed, and is used for a spot of liquid or its are injected into zone that other method can't be approaching or from which local extraction out.Liquid or gas suck from syringe front end aperture when core bar is extracted, when core bar pushes, liquid or gas are extruded.The social at present great majority of going up use all are the syringes that syringe needle is arranged.This syringe can let the people produce pain in injection, and can produce dangerous phenomenons such as syringe needle fractures, bending in the human body once in a while owing to syringe needle can get into.

Needleless injector is arisen at the historic moment according to people's demand, though needleless injector is very early by people's invention, the injection volume that it is low excessively; Loaded down with trivial details structure; Complicated use, extravagent price has seriously restricted the development of needleless injector, like a kind of home-made fast Shu Er needleless injector; The amount of getting it filled is merely 1 milliliter at every turn, and per injection dosage is 0-0.5 milliliter (0-50 unit).This needleless injector is power with the spring, the preparation work before it uses, medicine suction process; Pressure process, injection process, and injection post processing; All more loaded down with trivial details, very easily make a mistake in use like this, cause serious consequence; And the injection expensive of use needleless injector, seriously restricted the development of needleless injector.

Summary of the invention

To above problem, this utility model provides a kind of needleless injector, does not have syringe needle, has avoided the fear of patient to syringe needle, and some accidental injection dangerous situations generations, has avoided long term injections to form scleroma; And it is simple in structure, and injection process is convenient, and injection speed is fast, and pain is littler, uses safer.

This utility model solves the technical scheme that its technical problem adopted: a kind of needleless injector, to form by pusher and disposable sterilized parts, and said pusher comprises thread bush, propels pipe, high pressure gas passes in and out system, sliding shoe, discharger, resetting means; The said pipe of propelling comprises that thread segment, construction section, said thread bush comprise rotary threaded pipe, high pressure pushing ram, the sealing of said rotary threaded Guan Weiyi end; The other end with propel the riffled tube that the gas thread section matches; Said high pressure pushing ram is coaxial with the rotary threaded pipe, and an end is fixed in the blind end of rotary threaded pipe, the other end with propel the inside pipe wall slipper seal and cooperate; Said sliding shoe slipper seal is in propelling pipe; And between the high pressure pushing ram high pressure chest, said high pressure gas turnover system connectivity high pressure chest and outside atmosphere, and can control its logical closing; Said discharger is loaded on the construction section of propelling pipe; One end passes to be propelled pipe and puts in sliding shoe, and said sliding shoe has with discharger and puts in the shrinkage pool that the end in it matches, and said resetting means comprises the knob end and the cam end of pivot joint.

This a kind of needleless injector use does, fill medicine after, open said high pressure gas turnover system earlier, be communicated with high pressure chest and outside atmosphere; Said thread bush is rotated to the outermost end of propelling the gas thread section, close high pressure gas turnover system, the sealing high pressure chest; Pipe is propelled in rotation, promotes the high pressure pushing ram of thread bush, the extruding high pressure chest; Improve the high pressure chest internal gas pressure, stop when reaching required pressure, accomplish whole pressure process; During injection, resetting means is rotated to rest position, injection position is aimed in the sterile components outlet, open the locking of discharger to sliding shoe, it is that sterile components provides high pressure to accomplish injection that sliding shoe receives the effect of high pressure chest inner high voltage gas to promote sliding shoe.

As preferably, the exterior cylindrical wall of said rotary threaded pipe has anti-skidding lines.

As preferably, said high pressure gas turnover system comprises and is loaded on the miniature air valve of propelling the pipe construction section, is communicated with the gas circuit of miniature air valve and high pressure chest.

As preferably, said high pressure gas turnover system comprises and is loaded on the miniature air valve on the rotary threaded duct occlusion end on the thread bush, is communicated with the gas circuit of miniature air valve and high pressure chest.

As preferably, the shrinkage pool of said sliding shoe is single straight hole.

As preferably, the shrinkage pool of said sliding shoe is a trapezoidal hole.

The beneficial effect of this utility model is: this a kind of needleless injector, there is not syringe needle, and avoided the fear of patient to syringe needle, and some accidental injection dangerous situations generations, avoided long term injections to form scleroma; And it is simple in structure, and is easy to implement, cheap, easy to use, greatly reduces patient's use price, and injection speed is fast, and pain is littler, uses safer.

Description of drawings

Fig. 1 is the structural representation of first kind of embodiment of a kind of needleless injector.

Structural representation when Fig. 2 is the pressurization of a kind of needleless injector.

Structural representation when Fig. 3 is the injection of a kind of needleless injector.

Fig. 4 is the structural representation of second kind of embodiment of a kind of needleless injector.

Fig. 5 is a kind of structural representation of the third embodiment of needleless injector.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment this utility model is further specified:

In the embodiment shown in fig. 1, a kind of needleless injector is made up of pusher 1 and disposable sterilized parts 2; Said pusher 1 comprises thread bush 11, propel pipe 12, high pressure gas turnover system 13, sliding shoe 14, discharger 15, resetting means 16, and the said pipe 12 of propelling comprises thread segment 121, construction section 122, and said thread bush 11 comprises rotary threaded pipe 111, high pressure pushing ram 112; Said rotary threaded pipe 111 is end sealing, and the other end is managed the riffled tube that 12 thread segments 121 match with propelling, and said high pressure pushing ram 112 is coaxial with rotary threaded pipe 111; One end is fixed in the blind end of rotary threaded pipe 111; The other end with propel pipe 12 inwall slipper seals and cooperate, said sliding shoe 14 slipper seals are managed in 12 in propelling, and are high pressure chest 10 between the high pressure pushing ram 112; Said high pressure gas passes in and out system 13 and is communicated with high pressure chest 10 and outside atmosphere; And can control its logical closing, said discharger 15 is loaded on construction section 122, one ends of propelling pipe 12 and passes and propel pipe 12 and put in sliding shoe 14; Said sliding shoe 14 has with discharger 15 and puts in the shrinkage pool 141 that the end in it matches, and said resetting means 16 comprises the knob end 162 and cam end 163 of pivot joint.

This a kind of needleless injector use does, fill medicine after, open said high pressure gas turnover system 13 earlier, be communicated with high pressure chest 10 and outside atmosphere; Said thread bush 11 is rotated to the outermost end of propelling pipe 12 thread segments 121, as shown in Figure 2, close high pressure gas turnover system 13, sealing high pressure chest 10; Pipe 12 is propelled in rotation, promotes the high pressure pushing ram 112 of thread bush 11, extruding high pressure chest 10; Improve said high pressure chest 10 internal gas pressures, stop when reaching required pressure, accomplish whole pressure process; As shown in Figure 3; During injection; Resetting means 16 is rotated to rest position, injection position is aimed in sterile components 2 outlets, press down pressing down of discharger 15 and hold 152; Through the locking that 15 pairs of sliding shoes 14 of discharger are opened in leverage, sliding shoe 14 receives the effect of high pressure chest 10 inner high voltage gases to promote sliding shoe 14 and accomplishes injection for sterile components 2 provides high pressure.Open high pressure gas turnover system 13 after finishing using and be communicated with high pressure chest 10 and outside atmosphere; As shown in Figure 1; The projecting block 142 that matches with said cam end 163 is housed on the sliding shoe 14, and the knob end 162 of rotating restoring device 16 drives the projecting block 142 that cam end 163 acts on sliding shoe 14; Sliding shoe 14 is resetted

The exterior cylindrical wall of said rotary threaded pipe 111 has anti-skidding lines, when reversing corrugated tubing 111, plays anti-skidding effect.

Among the embodiment as shown in Figure 1, said high pressure gas turnover system 13 comprises and is loaded on the miniature air valve 131 of propelling pipe 12 construction sections 122, is communicated with the gas circuit 132 of miniature air valve 131 and high pressure chest 10.

Among the embodiment as shown in Figure 4, said high pressure gas turnover system 13 comprises and is loaded on the miniature air valve 133 on rotary threaded pipe 111 blind ends on the thread bush 11, is communicated with the gas circuit 134 of miniature air valve 133 and high pressure chest 10.

Among the embodiment as shown in Figure 1, the shrinkage pool 141 of said sliding shoe 14 is single straight hole.As improvement, among the embodiment as shown in Figure 5, the shrinkage pool 141 of said sliding shoe 14 is a trapezoidal hole, like this can through successively open discharger 15, the contact jaw 151 that makes its discharger 15 and shrinkage pool 141 are trapezoidal to be contacted successively, thereby realizes multiple injection.

Claims

1. needleless injector; Form by pusher (1), disposable sterilized parts (2); It is characterized in that: said pusher (1) comprises thread bush (11), propels pipe (12), high pressure gas turnover system (13), sliding shoe (14), discharger (15), resetting means (16), and the said pipe (12) of propelling comprises thread segment (121), construction section (122), and said thread bush (11) comprises rotary threaded pipe (111), high pressure pushing ram (112); Said rotary threaded pipe (111) is end sealing; The other end with propel the riffled tube that pipe (12) thread segment (121) matches, said high pressure pushing ram (112) is coaxial with rotary threaded pipe (111), an end is fixed in the blind end of rotary threaded pipe (111); The other end with propel pipe (12) inwall slipper seal and cooperate; Said sliding shoe (14) slipper seal and is high pressure chest (10) between the high pressure pushing ram (112) in propelling pipe (12), and said high pressure gas turnover system (13) is communicated with high pressure chest (10) and outside atmosphere; Said discharger (15) is loaded on the construction section (122) of propelling pipe (12); One end passes to be propelled pipe (12) and puts in sliding shoe (14), and said sliding shoe (14) has with discharger (15) and puts in the shrinkage pool (141) that the end in it matches, and said resetting means (16) comprises the knob end (162) and the cam end (163) of pivot joint.

2. a kind of needleless injector according to claim 1 is characterized in that: the exterior cylindrical wall of said rotary threaded pipe (111) has anti-skidding lines.

3. according to any described a kind of needleless injector in claim 1 or the claim 2; It is characterized in that: said high pressure gas turnover system (13) comprises and is loaded on the miniature air valve (131) of propelling pipe (12) construction section (122), is communicated with the gas circuit (132) of miniature air valve (131) and high pressure chest (10).

4. according to any described a kind of needleless injector in claim 1 or the claim 2; It is characterized in that: said high pressure gas turnover system (13) comprises that being loaded on thread bush (11) goes up the miniature air valve (133) on rotary threaded pipe (111) blind end, is communicated with the gas circuit (134) of miniature air valve (133) and high pressure chest (10).

5. a kind of needleless injector according to claim 1 is characterized in that: the shrinkage pool (141) of said sliding shoe (14) is single straight hole.

6. a kind of needleless injector according to claim 1 is characterized in that: the shrinkage pool (141) of said sliding shoe (14) is a trapezoidal hole.