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Current state of micro-robots/devices as substitutes for screening colonoscopy: assessment based on technology readiness levels

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Abstract

Background

Previous reports have described several candidates, which have the potential to replace colonoscopy, but to date, there is still no device capable of fully replacing flexible colonoscopy in the management of colonic disorders and for mass adult population screening for asymptomatic colorectal cancer.

Materials and methods

NASA developed the TRL methodology to describe and define the stages of development before use and marketing of any device. The definitions of the TRLS used in the present review are those formulated by “The US Department of Defense Technology Readiness Assessment Guidance” but adapted to micro-robots for colonoscopy. All the devices included are reported in scientific literature. They were identified by a systematic search in Web of Science, PubMed and IEEE Xplore amongst other sources. Devices that clearly lack the potential for full replacement of flexible colonoscopy were excluded.

Assessment of the current situation

The technological salient features of all the devices included for assessment are described briefly, with particular focus on device propulsion. The devices are classified according to the TRL criteria based on the reported information. An analysis is next undertaken of the characteristics and salient features of the devices included in the review: wireless/tethered devices, data storage–transmission and navigation, additional functionality, residual technology challenges and clinical and socio-economical needs.

Conclusions

Few devices currently possess the required functionality and performance to replace the conventional colonoscopy. The requirements, including functionalities which favour the development of a micro-robot platform to replace colonoscopy, are highlighted.

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Notes

  1. Website: http://www.capsovision.com/index.php/capsocam.html (accessed on 6 May 2015).

  2. RF systems http://rfsystemlab.com/en/sayaka/ (Accessed on 6 May 2015).

  3. Based on WHO Core medical equipment Tech. rep. Original data: 25000-41000 USD, exchange rate to GBP of 1 September 2014.

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Acknowledgments

This work was funded by the European Research Council (ERC) Grant: CODIR: colonic disease investigation by robotic hydro-colonoscopy (ERC-AG-268519) to Prof. A. Cuschieri (University of Dundee) and Prof Anne Neville (University of Leeds).

Disclosures

Silvia C. Tapia-Siles, Stuart Coleman and Alfred Cuschieri have no conflict of interest or financial ties to disclose.

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Authors and Affiliations

  1. Surgical Technology and Robotics Group, Institute for Medical Science and Technology (IMSaT), University of Dundee, Dundee, DD2 1FD, UK

    Silvia C. Tapia-Siles, Stuart Coleman & Alfred Cuschieri

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  1. Silvia C. Tapia-Siles
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  2. Stuart Coleman
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  3. Alfred Cuschieri
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Correspondence to Alfred Cuschieri.

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Tapia-Siles, S.C., Coleman, S. & Cuschieri, A. Current state of micro-robots/devices as substitutes for screening colonoscopy: assessment based on technology readiness levels. Surg Endosc 30, 404–413 (2016). https://doi.org/10.1007/s00464-015-4263-1

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