Patent ID: 9545485
Date: 2017-01-17
CPC Classifications: A61M

Claim:
1. A syringe assembly comprising: a barrel assembly comprising: an elastic cap that is detachably mountable to the barrel tip portion of the barrel assembly, the elastic cap comprising: wherein a minimum diameter of the receiving hole is 2 to 10 times an outer diameter of the puncture needle, wherein the elastic cap is configured such that, upon attachment to the barrel tip portion, at least part of the barrel tip portion is inserted into the receiving hole, the first inner diameter portion is in close contact with an outer peripheral surface of the annular head such that an airtight seal is formed between the first inner diameter portion and the barrel tip portion, the stopper portion abuts an end face of the annular head such that the stopper portion defines a final insertion position of the barrel tip portion, and the tip of the puncture needle penetrates the bottom wall through the base end surface of the bottom wall such that the bottom wall seals the tip of the needle hole, and wherein the inner diameter of the second inner diameter portion is substantially uniform from the stopper portion to the bottom wall.