Patent ID: 8679056
Filing Date: 2014-03-25
Classification: A61M

Abstract:
1. A syringe, comprising: a tube having one end serving as an injection end and the other end coupled with a cap; a first plunger disposed in the tube, wherein a filled portion axially extends through the first plunger, and a first chamber is formed between the first plunger and the injection end; a second plunger disposed in the tube and having a fixing hole, wherein a second chamber is formed between the first and second plungers; and a plunger rod assembly comprising a rod and a blocker, wherein the rod has a neck portion and at least one engaging portion on one end of the rod, the blocker is arranged on one side of the neck portion and is capable of being inserted into the filled portion of the first plunger, and the blocker is capable of being removed from the first plunger and being received in the fixing hole of the second plunger as the rod moves.