Jet micro-needle injection system

Abstract

The invention relates to the technical fields of medical cosmetic apparatuses and medicine injection, and in particular to a jet micro-needle injection system. The jet micro-needle injection system comprises a medicine tube, a piston and a push rod, wherein both the piston and the push rod are arranged in the medicine tube; the piston is connected to the front end of the push rod, and the piston gets into sealed sliding contact with the inner wall of the medicine tube; and a soluble micro-needle is arranged in an injection port at the front end of the medicine tube. When the injection system is used for conducting injection, the soluble micro-needle is pierced into skin to form a small transdermal hole in the skin firstly, then medicine liquid in the medicine liquid, under push force of the push rod which is pushed, forms a medicine jet flow, and finally, medicines, in the form of the jet flow, are dissolved by virtue of the soluble micro-needle and are applied subcutaneous tissues from the opened small hole. The injection system is safer to use, and the injection system can conduct transdermal injection at a relatively low jet speed.

Description

technical field [0001] The invention relates to the technical field of medical beauty equipment and medicine injection, in particular to a jet microneedle injection system. Background technique [0002] Traditional needle syringes have been used for in vitro drug administration for more than 300 years. This injection method injects the liquid medicine into the body through a stainless steel needle. The needle is easy to damage blood vessels and nerves in the body, causing bleeding, local skin damage and infection, and significant pain. Patients are afraid, and people who have been injected for a long time are also prone to subcutaneous nodules. There are also millions of medical injuries caused by needles in my country every year. At the same time, the cases of cross-infection caused by needle injection also cause non-negligible economic losses. After a large number of disposable syringe needles are used, they become medical waste that threatens environmental health. [0003...

AI Technical Summary

Problems solved by technology

Moreover, because needle-free injection mainly relies on high-speed jets to pierce the skin to allow drugs to enter the body, but the mechanical strength of the skin varies from person to person, and it is often difficult to give an accurate value for the pressure required for high-speed jets to pierce the skin.

In addition, in traditional needle-free injectors, due to the high strength required to tear the skin through the skin, there will be obvious backflow when the jet hits the intact skin surface until it reaches enough pressure to tear the skin , which inevitably causes splashing, which in turn reduces the utilization rate of the drug

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