Towards a Magnetically Actuated Laser Scanner for Endoscopic Microsurgeries

TL;DR

This paper introduces a novel magnetically actuated laser scanner for endoscopic microsurgeries, enabling precise 2D control and high-speed scanning in narrow spaces, with potential applications in surgical and diagnostic procedures.

Contribution

The paper presents a new magnetically controlled laser scanner with high precision and speed, including a user-friendly interface and performance validation in surgical scenarios.

Findings

Achieved 21 μm precision in laser positioning.

Demonstrated stable operation up to 48 Hz scanning speed.

User trials showed 39 μm accuracy in trajectory following.

Abstract

This article presents the design and assembly of a novel magnetically actuated endoscopic laser scanner device. The device is designed to perform 2D position control and high speed scanning of a fiber-based laser for operation in narrow workspaces. The device includes laser focusing optics to allow non-contact incisions and tablet-based control interface for intuitive teleoperation. The performance of the proof-of-concept device is analysed through controllability and the usability studies. The computer-controlled high-speed scanning demonstrates repeatable results with 21 um precision and a stable response up to 48 Hz. Teleoperation user trials, were performed for trajectory-following tasks with 12 subjects, show an accuracy of 39 um. The innovative design of the device can be applied to both surgical and diagnostic (imaging) applications in endoscopic systems.