Patent ID: 8105276

Claim:
A disposable safety injection apparatus comprising, a liquid medication tube; a syringe needle; a push rod; a tube ring; said syringe needle is coupled to an insert tenon disposed at a front end of said liquid medication tube; said insert tenon comprises a connecting portion disposed therein, a concentric C-shape lacerable slot, and a circular lacerable slot wherein, the C-shape lacerable slot is disposed between the insert tenon and a top wall of the liquid medication tube; and the circular lacerable slot is disposed between the top wall of the liquid medication tube and an external side of a liquid medication tube ring located on said front end of said liquid medication tube; a body of said push rod includes a rod column having a latch portion being extended axially from a front end of said push rod and passed through and fixed to said tube ring; said push rod is slidably contained in the liquid medication tube wherein, said push rod is pushed forward to press said tube ring against said top wall, and said latch portion is latched to said connecting portion in said insert tenon; said push rod is pushed to tear said C-shape lacerable slot and form a torque at a portion having no groove and break a thinner portion corresponding to a position of said circular lacerable slot; said push rod comprises a rod head portion and a first breaking portion disposed sequentially at a front section of the body of the push rod; said rod head portion is latched to a stopping portion at an opening at a rear end of said liquid medication tube, wherein said syringe needle, a front section of said push rod, and said tube ring are accommodated in said liquid medication tube, and said push rod is selectively broken at a first breaking portion thereof.