Finding Optimal Actuation Configuration for Magnetically Driven Capsule Endoscopy Based on Genetic Algorithm

Madani, K.; Khanmohammadi, Sohrab; Azimirad, Vahid

doi:10.1007/s40846-016-0180-6

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…As a result of their simple fabrication and safe energy source, electromagnetic actuators have been proposed to enhance the function of some medical applications [10,11]. However, in recent years, several investigations have shown that electromagnetic actuators fail to generate efficient force outputs when they are miniaturised for minimal-space applications [12,13]. In addition, the force generation of electromagnetic actuators cannot be enhanced with a simple increase in the current supplied to the coil element, as problems such as the inevitable temperature rise could reduce the suitability of these actuators for medical applications.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Latching-Type Electromagnetic Actuator for Applications in Minimally Invasive Surgery

Wang

Wahed

2020

Actuators

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Single-port laparoscopic surgery (SLS), which utilises one major incision, has become increasingly popular in the healthcare sector in recent years. However, this technique suffers from several problems particularly the inability of current SLS instruments to provide the optimum angulation that is required during SLS operations. In this paper, the development of a novel latching-type electromagnetic actuator is reported, which is aimed to enhance the function of SLS instruments. This new actuator is designed to be embedded at selected joints along SLS instruments to enable the surgeon to transform them from their straight and slender shape to an articulated posture. The developed electromagnetic actuator is comprised of electromagnetic coil elements, a solid magnetic shell, and a permanent magnet used to enhance the magnetic field interaction along the force generation path and also to provide the latching effect. In this investigation, electromagnetic finite element analyses were conducted to design and optimise the actuator’s electromagnetic circuit. In addition, the performance of the new actuator was numerically and experimentally determined when output magnetic forces and torques in excess of 9 N and 45 mNm, respectively together with an angulation of 30° were achieved under a short pulse of current supply to the magnetic circuit of the actuator.

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Section: Introductionmentioning

confidence: 99%

Development of a Novel Latching-Type Electromagnetic Actuator for Applications in Minimally Invasive Surgery

Wang

Wahed

2020

Actuators

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Bifurcation analysis of a vibro-impacting capsule robot in contact with a circular fold

Yin

Yan

Chávez

et al. 2022

Physica D: Nonlinear Phenomena

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Next-generation ingestible devices: sensing, locomotion and navigation

Alsunaydih

Yuce

2021

Physiol. Meas.

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There is significant interest in exploring the human body’s internal activities and measuring important parameters to understand, treat and diagnose the digestive system environment and related diseases. Wireless capsule endoscopy (WCE) is widely used for gastrointestinal (GI) tract exploration due to its effectiveness as it provides no pain and is totally tolerated by the patient. Current ingestible sensing technology provides a valuable diagnostic tool to establish a platform for monitoring the physiological and biological activities inside the human body. It is also used for visualizing the GI tract to observe abnormalities by recording the internal cavity while moving. However, the capsule endoscopy is still passive, and there is no successful locomotion method to control its mobility through the whole GI tract. Drug delivery, localization of abnormalities, cost reduction and time consumption are improvements that can be gained from having active ingestible WCEs. In this article, the current technological developments of ingestible devices including sensing, locomotion and navigation are discussed and compared. The main features required to implement next-generation active WCEs are explored. The methods are evaluated in terms of the most important features such as safety, velocity, complexity of design, control, and power consumption.

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Finding Optimal Actuation Configuration for Magnetically Driven Capsule Endoscopy Based on Genetic Algorithm

Cited by 3 publications

References 32 publications

Development of a Novel Latching-Type Electromagnetic Actuator for Applications in Minimally Invasive Surgery

Development of a Novel Latching-Type Electromagnetic Actuator for Applications in Minimally Invasive Surgery

Bifurcation analysis of a vibro-impacting capsule robot in contact with a circular fold

Next-generation ingestible devices: sensing, locomotion and navigation

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