Magnetic Resonance Guided Navigation of Untethered Microgrippers.

ABSTRACT: Microsurgical tools offer a path to less invasive clinical procedures with improved access, reduced trauma, and better recovery outcomes. There are a variety of rigid and flexible endoscopic devices that have significantly advanced diagnostics and microsurgery. However, they rely on wires or tethers for guidance and operation of small end-effector tools. While untethered physiologically responsive microgrippers have been previously shown to excise tissue from deep gastrointestinal locations in animal models, there are challenges associated with guiding them along paths and moving them to specific locations. In this communication, the magnetic dipole moment of untethered thermally responsive grippers is optimized for efficient coupling to external magnetic resonance (MR) fields. Gripper enc

SUBMITTER: Ghosh A 

PROVIDER: S-EPMC7854825 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature