Disposable pneumatic needleless injector and using method thereof

Abstract

The invention relates to the technical field of injectors, and particularly discloses a disposable pneumatic needleless injector and a using method thereof. The disposable pneumatic needleless injector comprises a cylinder and a needleless medicine storage tube installed at the front end of the cylinder and used for containing injection or a vaccine; an end cover is arranged at the tail end of the cylinder, and the cylinder is internally provided with a power cavity for storing a small disposable steel bottle, a control device used for controlling the injector to work, an energy storage cavity, a middle cover, a seal damping device, a piston and a piston push rod in sequence from the tail end to the front end; the piston push rod is connected with a rubber piston, and the rubber piston is located in the needleless medicine storage tube; the control device comprises a button switch, a valve body, a valve core and a spring, and a safety device is arranged on the button switch and used for preventing misoperation of a user. When the injector is used for injection, the safety device is removed, and the button switch is pressed to conduct injection operation. The disposable pneumatic needleless injector has the advantages that the structure of a triggering and pushing device is greatly simplified, operation is convenient, cost is low, injection efficiency is high, and reliability is high.

Description

technical field [0001] The invention relates to the technical field of syringes, in particular to a disposable pneumatic needle-free syringe and its usage method. Background technique [0002] The traditional syringe is an injection method that injects medicine into the human body through a stainless steel needle. This injection method can easily cause local skin damage, bleeding, swelling and pain, etc., which not only causes significant pain, but also causes most patients (especially infants) Fear, and the risk of infection at the injection site. Needle-free injection technology uses the principle of high-pressure jets to make the liquid medicine form a thinner liquid flow, which instantly penetrates the skin and reaches the subcutaneous area. Because of the change in the injection principle, the liquid medicine is diffused and distributed under the skin, with faster onset time and higher drug absorption rate. , can completely avoid the above problems. [0003] According...

AI Technical Summary

Problems solved by technology

[0004] At present, the types of needle-free syringes on the market are relatively single, mainly needle-free syringes for insulin injection, and the driving power is mainly spring power, but there is still a certain gap in injection quality compared with foreign manufacturers' equipment, and the price is relatively low. high

[0005] The main reasons for the current low acceptance rate of needle-free syringes in the market are: the price of syringes is too expensive, and the price / performance ratio is too low for the general public; the performance factor of the power spring leads to insufficient injection pressure, and the injection cannot be performed as expected, and the injection is reliable. sex without a better guarantee

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