Big-dose needleless injector

Abstract

The invention discloses a big-dose needleless injector, which consists of a gun body, a collision hammer assembly, a circulation dragging assembly, a trigger assembly and a terminal injection assembly, wherein the gun body consists of a gun frame and a gun pipe, and is used for providing a support and operation space for other parts; the collision hammer assembly consists of a hammer body, an elastic rope and a pressing type warning device; through the axial movement of the hammer body in the gun pipe, collision power is provided for the terminal injection assembly; the circulation dragging assembly is positioned in a driving cavity, and is used for driving the collision hammer assembly to reach a chambering state; the hammer body triggering is controlled; the trigger assembly is used fordriving the circulation dragging assembly to operate; the terminal injection assembly consists of a medicine storage tube, a piston and a push rod; the collision hammer assembly provides power to realize the needless injection. The big-dose needleless injector has the advantages that the structure is scientific and reasonable; the holding is convenient; the operation is convenient and fast; the multi-time continuous injection can be fast performed to realize the big-dose medicine injection; the application range of the needleless injector in the field of clinic injection is expanded.

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...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a large-dose needle-free injector with a scientific structure, convenient operation, and fast continuous injection to realize large-dose drug injection, aiming to solve the problem that the existing needle-free injectors are not convenient enough to operate, and the range of use is limited by the injection dose. , high production costs, etc.

Images