Insulin injection pen

Abstract

The invention relates to an insulin injection pen which comprises a pen cap, a needle, an injection pipe, an injection sleeve pipe, a locating fixture block, a screw, a nut pipe, a fixing pipe, a rotating pipe and a button, wherein a piston is arranged in the injection pipe, and insulin is filled in the injection pipe in advance. Partial threads on two sides of the screw are respectively cut off along the axial direction so that two sections which are parallel to each other are formed. A pressing head is arranged at the front end of the screw, and the screw is coupled with inner threads of the nut pipe. The injection pen further comprises a rotating handle and a rotary spring. The rotating handle is arranged at the outer end, namely, the side opposite to the pen cap, of the injection pen, the outer end of the rotating pipe is arranged in the rotating handle and is fixed on the rotating handle, the other end of the rotating pipe is connected with the nut pipe in a clamping mode, the locating fixture block is sleeved outside the rotating pipe and is connected with the rotating pipe in the clamping mode; the nut pipe is arranged between the pressing head and the locating fixture block; and the rotary spring is sleeved on the rotating pipe, one end of the rotary spring is fixed on the inner side of the rotating handle, and the other end of the rotary spring is fixed on the locating fixture block. According to the insulin injection pen, repeated usage can be achieved through repeated adjustment of the locating fixture block, the rotary spring and a clutch spring.

Description

technical field [0001] The invention relates to an insulin injection pen, which belongs to the field of medical devices. Background technique [0002] An insulin needle-free injector (also known as an insulin needle-free injection system) is a device that injects by pressure. Its principle is to generate strong power through the release of the spring in the syringe, and quickly push the liquid medicine in the ampoule at the front end of the syringe. The liquid medicine passes through the micropore with a diameter of 0.17mm at the front end of the ampoule and instantly passes through the epidermal cells in the form of a "liquid needle". , penetrate into the subcutaneous tissue to complete the injection. Its advantage is that it eliminates the fear of needles and eliminates the pain. [0003] Existing insulin syringes have the problems of large volume, inconvenient portability or inconvenient use. For example, the Chinese utility model patent with application number 2009200...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problems of large volume, inconvenient portability or inconvenient use existing in existing insulin syringes, and provides users with a multi-time, quantitative insulin that is easy to use, easy to carry, easy to operate, and can precisely control the metering. injection pen

Images