Patent ID: 6989001

Claim:
A breakable syringe with a safety sleeve comprising: a syringe body being a cylindrical tube with an inner chamber an outer periphery, an open end, and a connecting end having a needle base inserted into the connecting end of the syringe body; and a needle partially received inside the needle base and having a passage defined through the needle and the needle base to communicate with the inner chamber of the syringe body; a safety sleeve slidably sleeving the syringe body, and being a tube with an inner periphery, an abutting end, a distal end and having a length longer than a length of the needle; a breaking device clamped between the syringe body and the safety sleeve near the connecting end of the syringe body to penetrate the syringe body by pushing with the safety sleeve; and multiple engaging devices respectively formed on the outer periphery of the syringe body and the inner periphery of the safety sleeve to locate the safety sleeve at multiple positions.