Liquid medicine injection device
A medical liquid injection device is provided. The medical liquid injection device includes a base body, a needle assembly mounted on the base body, a reservoir fluidly connected to the needle assembly and having a guide groove on an inner surface, and a driving unit configured to move a plunger disposed inside the reservoir.
1. A medical liquid injection device for storing medical liquid delivered from an injection needle of an external medical liquid injector, the medical liquid injection device comprising:
a base body;
a needle assembly mounted on the base body;
a reservoir having an outlet end fluidly connected to the needle assembly and an inlet end into which the medical liquid is injected:
a sealing member mounted at the inlet end; and
a guide cap disposed at the inlet end, and mounted on the base body or the reservoir to face the sealing member,
wherein
the guide cap has:
a flange attached to a seating end of the base body;
an inclined end extending inwardly from the flange with a reduced open cross-sectional area; and
wing pieces extending outwardly from the flange and supported by the base body.
2. The medical liquid injection device of claim 1 , wherein the guide cap has a curved surface in a region of the guide cap where the flange and the inclined end are connected to each other.
3. The medical liquid injection device of claim 1 , wherein the guide cap is inserted to a pre-set depth from a surface of the base body.
4. The medical liquid injection device of claim 1 , wherein:
the guide cap is inclined such that an open area of the guide cap is reduced toward the sealing member, and
the guide cap covers a portion of the first sealing member and exposes another portion of the sealing member to the outside.