| 摘要 |
The utility model discloses a safety self-destroying disposable syringe which comprises a hollow needle cylinder, a push rod arranged in the needle cylinder and a rubber plug arranged at the front end of the push rod, wherein the front end of the needle cylinder is provided with a needle seat which comprises a conical seat and a supporting seat, wherein the conical seat is provided with a Ruhr cone, and a plurality of O-shaped rubber rings are arranged between an outer circle of a body of the conical seat and the needle cylinder; the lower part the outer side of the conical seat is provided with a plurality of elastic position clamping blocks; the supporting seat is arranged in an inner cavity of the conical seat, and the front end of an inner hole of the supporting seat is provided with an elastic supporting claw; the front end of the push rod is provided with a conical bulge, the middle part of the conical bulge is provided with a draw hook and the middle part of the push rod is provided with three easily broken points. After the utility model is used for injection, a needle head is retracted in the needle cylinder. The utility model is a self-destroying safety syringe which can interchange injection needles with various standards. The utility model has the characteristics of simple structure, convenient machining and use and high safety. |
