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Gun type needleless injector

A needle-free injector and gun-type technology, which can be used in injectors, hypodermic instruments, injectors by jet action, etc., can solve the problem that needle-free injectors cannot continuously inject multiple times.

Pending Publication Date: 2020-11-17
江苏丞宇米特医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the needle-free injector in the prior art cannot be injected continuously for multiple times, a gun-type needle-free injector is now provided

Method used

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  • Gun type needleless injector
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  • Gun type needleless injector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1-11 As shown, a gun-type needle-free injector comprising:

[0043] The gun body 1 has a piston chamber;

[0044] The active piston assembly has a pneumatic piston 2 and a hydraulic rod 3. The pneumatic piston 2 is slidably installed in the piston cavity. A piston rod 201 is fixed on the pneumatic piston 2. The piston chamber is divided into a rodless chamber 101 and a rod chamber 102, the piston rod 201 is located in the rod chamber 102, the gun body 1 has an air inlet 103 and an air outlet 104, and the air inlet 103 communicates with the rodless chamber 101, The air outlet hole 104 communicates with the rod cavity 102;

[0045] The energy storage mechanism is used to block the end of the rodless cavity 101 away from the piston rod 201, and magnetically adsorb the pneumatic piston 2;

[0046] The inner hydraulic pipe 4 is fixed in the gun body 1, the tail end of the inner hydraulic pipe 4 extends into the rod cavity 102, the head end of the hydraulic...

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Abstract

The invention relates to the technical field of needleless injectors, in particular to a gun type needleless injector. The gun type needleless injector comprises a gun body, a driving piston assembly,an energy storage mechanism, an inner hydraulic pipe, an outer hydraulic pipe, an energy storage mechanism, an injection one-way valve and an oil storage barrel. According to the gun type needlelessinjector, a piston pushes a hydraulic rod by the pneumatic piston when in percussion, the hydraulic rod drives the hydraulic piston to push hydraulic oil in a first oil cavity forwards to enter a second oil cavity, a stepping piston in the outer hydraulic pipe is forced to drive a push rod to conduct percussion forwards, and therefore the push rod pushes out liquid medicine in a medicine core at the head end of the outer hydraulic pipe at a high speed, single quantitative injection is completed, when the hydraulic piston retreats, the hydraulic oil in an oil storage barrel can be automaticallysupplemented into the first oil cavity, and when the hydraulic piston retreats, the injection one-way valve can prevent the hydraulic oil in the second oil cavity from returning into the first oil cavity so as to keep the position of the push rod unchanged, so that continuous multi-time quantitative injection can be realized.

Description

technical field [0001] The invention relates to the technical field of needle-free injectors, in particular to a gun-type needle-free injector. Background technique [0002] The working principle of the needle-free injector is to use the power source to release the power to generate instantaneous high pressure to push the liquid medicine to be sprayed out from the micron-sized pores. The high-speed liquid medicine flow will instantly penetrate the skin and reach the subcutaneous area, so that the liquid medicine is dispersed and distributed under the skin. , faster onset time and higher drug absorption rate; [0003] The existing needle-free injector can only complete the injection of the drug solution in the same drug core at one time, and the drug solution needs to be frequently loaded during batch injection, resulting in low injection efficiency; in view of this, the present invention aims to provide a drug solution that can Gun-type needle-free injector for multiple qua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/303A61M5/307A61M5/31A61M5/315
CPCA61M5/30A61M5/31A61M5/31511A61M5/31515A61M5/31578
Inventor 支前锋徐浩宇张春莉张亚德李海飞刘鑫刘靖
Owner 江苏丞宇米特医疗科技有限公司
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