2019年10月11日，来自韩国大邱庆北科技学院Hongsoo Cho教授应邀来访我基地，并在微纳电子大厦205会议室做了题为《Magnetically Controlled microrobots for the treatment of vascular diseases》的学术报告。微纳电子学系多位老师以及研究生、本科生参加了报告会，并与报告人进行了热烈的讨论。

Magnetically Controlled microrobots for the treatment of vascular diseases

Significant progress has been made in the development of robotic systems that steer catheters. A more challenging task, however, is the development of systems that steer sub-millimeter-diameter guidewires during intravascular treatments; a novel microrobotic approach is required for steering. In this presentation, two types of magnetically actuated microrobots are introduced for precise control by external magnetic fields to achieve their specific goals. Tethered and untethered microrobots with wireless magnetic manipulation are presented for the treatment of vascular diseases such as thrombosis. The tethered microrobot is attached to the tip of the guidewire, and is magnetically steered by changing the direction and intensity of an external magnetic field. The tethered microrobot is fabricated via replica molding and features a soft body made of polydimethylsiloxane, permanent magnets, and a microspring. The microrobot was steered inside a complex 2D and 3D phantoms for in vitro steering and tracking tests. The untethered microrobot was also tested using a 3D phantom of the coronary artery to verify steerability in 3D space. The microrobots were successfully guided into any desired arterial branch in the phantoms and our system improves steerability and will find applications in robot-assisted intravascular treatments.