摘要 |
<p>Disclosed is a pulled-back fixed-needle safe self-destroying syringe, comprising a cylinder (1) provided with a core rod (2) inside, wherein a position close to the upper end portion of the core rod (2) is sleeved with a rubber plug (3); the cylinder neck of the upper end portion of the cylinder (1) is provided inside with an elastic cushioning upper needle base (4) located at the upper part and a lower needle base (5) located at the lower part, both being integrally connected to form a whole in a sleeve-clamp manner; the upper part of the elastic cushioning upper needle base (4) forms a needle tube-assembling column (6) and the lower part of the elastic cushioning upper needle base (4) is cylindrical; an annular elastic sealing limiting ring body (7) is formed at the outer wall of the lower part of the elastic cushioning upper needle base (4); and an annular elastic cushioning gap (8) is formed between the inner wall of the elastic sealing limiting ring body (7) and the outer part of the lower part of the elastic cushioning upper needle base. As a whole, the syringe is rational in structure, simple in operation, stable in working conditions, and has the characteristics of safety and practicality.</p> |