PORTABLE PAINLESS INJECTION DEVICE WITHOUT NEEDLE

摘要

The present invention relates to a portable, portable, needleless, painless injection device that is easy to carry, can inject an injection drug with a one-time pneumatic, and can be carried even in an airplane without using liquefied compressed gas. According to the present invention, a valve body having an inner space; A valve member provided to be slidably movable in an inner space of the valve body and slid on an inner wall of the valve body at an outer edge; A gas pumping means for filling a disposable pressurized gas into the inner space of the valve body with a nozzle part connected in communication with the inner space of the valve body; A pressure gauge unit configured outside the valve body and configured to display a gas pressure in an inner space of the valve body when gas is pumped by the gas pumping means; An operation knob provided at an end of the valve member exposed from the valve body; A cylinder body coupled to one side of the valve body, closed at one end, and having an inner space in a longitudinal direction; A piston member whose one end is provided so as to be slidably in contact with the inner space of the cylinder body while being slidably moved, and having a piston rod from one end thereof; An injection solution unit including an injection solution piston rod detachably coupled to the cylinder body and contacting or concavely coupled to the piston rod; There is provided a portable needleless painless injection device comprising a; gas flow path forming means for selectively communicating and closing the inner space of the valve body and the inner space and the outside air side of the cylinder body to move the piston member forward and backward.