Drug delivery system, patch pump and drug delivery device

The utility model discloses a drug delivery system, which comprises a container for media; a plunger disposed in the container; a plunger assembly includes a container, a plunger disposed within the container, and a lead screw axially fixed with respect to the container and threadingly engaged with the plunger, where the lead screw is disposed within the container and rotation of the lead screw causes axial displacement of the plunger with respect to the container. The utility model further discloses a patch pump comprising the medicine conveying system and a medicine conveying device comprising the medicine conveying system. 本实用新型公开了一种药物输送系统，包括：用于介质的容器；布置在所述容器中的柱塞；以及导螺杆，所述导螺杆相对于所述容器沿轴向固定并且与所述柱塞以螺纹方式接合，其中所述导螺杆布置在所述容器内，并且所述导螺杆的旋转引起所述柱塞相对于所述容器的轴向位移。本实用新型还公开了一种包括所述药物输送系统的贴片泵和一种包括所述药物输送系统的药物输送装置。