Design concept of a micro robot delivery system

Coronary artery chronic total occlusion (CTO) is one of the endovascular diseases, which is complete or almost complete blockage of a coronary artery. To remove the calcificated blockages clearly freely and precise control of catheters and guidewires are necessary for CTO treatment. The microrobot can implement drilling motion and move freely in the artery due to its size. However, the catheter insertion site is too far from the lesion, and the microrobot has not enough driving force, so it is necessary for not only the micro robot but also microrobot delivery system. The microrobot delivery system can help the microrobot to reach the CTO safely, generate more torque, and tap the blockage. In this paper, design concept of the microrobot delivery system is proposed.