公开(公告)号：US20220304791A1

公开(公告)日：2022-09-29

申请号：US17284761

申请日：2019-10-12

Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES

Inventor： Dan LV ,  Yang ZHAN ,  Yuyao SUN ,  Yulin OUYANG

IPC: A61D7/00 ,  A61B5/291 ,  A61B5/00

Abstract: The invention provides a stepping doser. The doser comprises a bearing component, a dosing catheter, wiring tubes, a threaded rod, a nut, a signal recorder and a connecting rod; wherein the middle socket of the threaded rod is sheathed with a nut, the lower end of the threaded rod contacts the lower inner wall of the bearing component, the upper end of the threaded rod penetrates the upper part of the bearing component, and the upper end of the threaded rod is provided with a driving structure; The bearing component is also provided with a limit stop for limiting the rotation of the nut so that when the threaded rod rotates, the nut can move up and down; when the nut moves up and down, the dosing catheter can move up and down. The dosing catheter can be stepped with this doser, allowing dosing in a larger area.