Kinematic Modeling and Visual Servo Control of a Soft-Bodied Magnetic Anchored and Guided Endoscope

In minimally invasive surgery (MIS), a number of instruments are inserted into the surgical cavity via the trocar(s), which makes the surgical site crowded and instruments tend to fence with each other. In addition, the motion of the endoscope is restricted by the trocar, which limits the field of v...

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Veröffentlicht in:IEEE/ASME transactions on mechatronics 2020-06, Vol.25 (3), p.1531-1542
Hauptverfasser: Li, Weibing, Cheng, Truman, Ye, Minxin, Ng, Calvin Sze Hang, Chiu, Philip Wai Yan, Li, Zheng
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container_issue 3
container_start_page 1531
container_title IEEE/ASME transactions on mechatronics
container_volume 25
creator Li, Weibing
Cheng, Truman
Ye, Minxin
Ng, Calvin Sze Hang
Chiu, Philip Wai Yan
Li, Zheng
description In minimally invasive surgery (MIS), a number of instruments are inserted into the surgical cavity via the trocar(s), which makes the surgical site crowded and instruments tend to fence with each other. In addition, the motion of the endoscope is restricted by the trocar, which limits the field of view of the endoscope. To alleviate these problems, magnetic anchored and guided systems (MAGSs) have been proposed. Conventional MAGSs are built from rigid materials with small actuators and sensors. As a result, these MAGSs tend to be heavy, complex, difficult to make, and costly. In this article, we first present a soft-bodied MAGS endoscope weighing 13 g, which is made up of printable silicon rubber with embedded magnets and a camera module. The usage of soft 3-D printable material significantly reduces the complexity of the MAGS endoscope. The soft-bodied MAGS endoscope can be anchored and steered by an external magnet controlled by a serial-link robot arm. The kinematic modeling of the soft-bodied MAGS endoscope is developed. Visual servo based automatic instruments tracking of the soft-bodied MAGS endoscope is achieved for the first time. Experimental results validate that the soft-bodied MAGS endoscope can guide surgical instruments, showing its high potentials in MIS.
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subjects Actuators
Automatic control
Cameras
Cavity resonators
Complexity
Construction materials
Endoscopes
Field of view
Instruments
kinematic modeling
Kinematics
magnetic anchored and guided system (MAGS)
Magnets
Manipulators
minimally invasive surgery (MIS)
Modelling
Robot arms
Servocontrol
soft-bodied endoscope
Surgery
Surgical instruments
Three dimensional printing
title Kinematic Modeling and Visual Servo Control of a Soft-Bodied Magnetic Anchored and Guided Endoscope
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