Design of A Novel Drug-delivery Module for Active Locomotive Intestinal Capsule Endoscopy

摘要

Current Wireless Capsule Endoscopic systems (WCE) provide only diagnostic tools, but in the future, advanced functionalities such as controllable drug delivery could be available for clinicians. This paper proposes a spiral capsule robot driven by external magnetic field control wireless targeted drug delivery module, the module includes two radial magnetizing magnetic ring and a simple plastic chain, and it has a volume of 1.15 ml medicine cavity integration within the interior space. The control system of the robot including the driven system, motion control and drug release of the robots was presented. The robot module has two spiral grooves outside the module, which can be controlled in the external magnetic field. The inner two ring magnets can be operated and closed under the control of external strong pulse magnetic field. Then the robot was driven by a three-axis Helmholtz coil system. Finally, the feasibility of the function of drug release is verified. The developed capsule robot can be used to improve the capsule robot system, increase the function of the capsule robot, and can be used in the future medical treatment.