Patent ID: 9381310
Filing Date: 2016-07-05
CPC Classification: A61J,A61M

Claim Text:
1. An injection needle assembly used by being attached to an injector including an injection barrel filled with medicine and an injector needle tube, comprising: a sticking needle tube having a needle tip to be stuck into a skin; a needle holding portion for holding the sticking needle tube; an engagement portion engaged with the injection barrel; and a connection portion which includes a luminal portion and the connection portion includes a first abutting surface abutting the needle holding portion and a second abutting surface abutting the engagement portion; wherein a proximal end of the sticking needle tube, opposite to the needle tip of the sticking needle tube, is arranged in said luminal portion, an ejection port of the injector needle tube of the injector is arranged in said luminal portion, and said luminal portion of the connection portion thereby connects the sticking needle tube and the injector needle tube with each other in fluid communication in a liquid tight manner.