A Monolithic Compliant Continuum Manipulator:A Proof-of-Concept Study

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A Monolithic Compliant Continuum Manipulator:A Proof-of-Concept Study

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Thomas, Theodosia Lourdes / Venkiteswaran, Venkatasubramanian Kalpathy / Ananthasuresh, G. K. / Misra, Sarthak

Continuum robots have the potential to form an effective interface between the patient and surgeon in minimally invasive procedures. Magnetic actuation has the potential for accurate catheter steering, reducing tissue trauma and decreasing radiation exposure. In this paper, a new design of a monolithic metallic compliant continuum manipulator is presented, with flexures for precise motion. Contactless actuation is achieved using time-varying magnetic fields generated by an array of electromagnetic coils. The motion of the manipulator under magnetic actuation for planar deflection is studied. The mean errors of the theoretical model compared to experiments over three designs are found to be 1.9 mm and 5.1 deg in estimating the in-plane position and orientation of the tip of the manipulator, respectively, and 1.2 mm for the whole shape of the manipulator. Maneuverability of the manipulator is demonstrated by steering it along a path of known curvature and also through a gelatin phantom, which is visualized in real time using ultrasound imaging, substantiating its application as a steerable surgical manipulator.

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Dokumentinformationen

Titel :

A Monolithic Compliant Continuum Manipulator:A Proof-of-Concept Study

Beteiligte:

Thomas, Theodosia Lourdes (Autor:in) / Venkiteswaran, Venkatasubramanian Kalpathy (Autor:in) / Ananthasuresh, G. K. (Autor:in) / Misra, Sarthak (Autor:in)

Erscheinungsdatum :

2020-12-01

Anmerkungen:

Thomas , T L , Venkiteswaran , V K , Ananthasuresh , G K & Misra , S 2020 , ' A Monolithic Compliant Continuum Manipulator : A Proof-of-Concept Study ' , Journal of mechanisms and robotics-Transactions of the asme , vol. 12 , no. 6 , 061006 . https://doi.org/10.1115/1.4046838

DOI :

https://doi.org/10.1115/1.4046838

Medientyp :

Aufsatz (Zeitschrift)

Format :

Elektronische Ressource

Sprache :

Englisch

Schlagwörter :

compliant mechanisms , mechanism design , medical robotics , robot design , MAGNETIC CATHETER NAVIGATION , INITIAL-EXPERIENCE , ABLATION , DESIGN , ROBOTS , CURVATURE , SYSTEM