Needless injector

A technology of a needle-free syringe and an injection assembly, which is applied in the field of medical devices, can solve the problems of small use range, inconvenient operation of the needle-free syringe, and high manufacturing cost, and achieves the effects of easy implementation, beneficial hand force, and reasonable structure.

Inactive Publication Date: 2019-04-05
王才丰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a needle-free injector with scientific structure, convenient operation, rapid and continuous injection to realize large-dose drug injection. high cost etc.

Method used

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Examples

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Embodiment Construction

[0059] see Figure 1-4 As shown, a needle-free injector disclosed in the present invention is mainly composed of five parts: a gun body, a ram assembly, a circular drag assembly, a trigger assembly and a terminal injection assembly.

[0060] Among them, see Figure 1-6 And shown in 9, described gun body is made of fixedly connected gun frame 8 and gun barrel 5; Gun barrel 5 is provided with cylindrical gun chamber 14, and the both sides of gun housing 14 are respectively provided with a side that communicates with it. Cavity 15, the front end of gun barrel 5 is fixed with thread head 11 through neck pipe 9, and the observation window 4 with scale 10 is arranged on the side wall of neck pipe 9, the inner chamber of neck pipe 9, the inner chamber of thread head 11 and gun bore 14 three Coaxial, and the inner diameter of the neck tube 9 is smaller than the gun bore 14; The driving cavity 13; the gun body is the skeleton of the needle-free injector, which is used to provide work...

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Abstract

The invention discloses a needless injector which comprises a gun body, a rammer component, a circular dragging component, a trigger component and a terminal injection component; the gun body is composed of a gun frame and a gun tube and is used for providing a supporting and running space for other components; the rammer component is composed of a rammer, an elastic rope and a pressing type alarm; the rammer axially moves in the gun tube so as to provide an impact force for the terminal injection component; the circular dragging component is located in a driving chamber and is used for driving the rammer component to reach a chambering state and control the rammer to motivate; the trigger component is used for driving the circular dragging component to run; the terminal injection component is composed of a drug storage barrel, a piston and a push rod; the terminal injection component is supplied with power by the rammer component so as to realize needleless injection. The needless injector has a scientific and reasonable structure, is convenient for holding and operation and is capable of quickly repeated continuous injecting for multiple times so as to realize large-dose drug injection; application range of the needleless injector in the field of clinic injection is expanded; the needless injector is easy for operation, use rate of components is high and manufacturing cost islow.

Description

[0001] The present invention is a divisional application of the invention patent application with application number 201610967779.3 submitted on November 05, 2016. technical field [0002] The invention relates to a medical device, in particular to a needle-free injector capable of continuous multiple injections to realize large-dose injection of medicine. Background technique [0003] Needle-free injection is a new technology that relies on needle-free injectors to make liquid medicine directly enter the body tissue in the form of ultra-fine, high-speed, and straight-line high-pressure jets, without needle puncture to achieve the purpose of drug injection. Compared with the traditional injection technology in the past, needle-free injection does not require a needle to puncture the body, which reduces the pain and fear of drug injection, reduces the risk of bacterial infection, avoids the occurrence of accidents such as needle scratches and breaks, and improves the efficienc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/303A61M5/31A61M5/315
CPCA61M5/30A61M5/31A61M5/31531A61M5/31548A61M2005/3125A61M2205/18A61M2205/586
Inventor 王才丰
Owner 王才丰
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