Evidence map›Paper›PMID 28316873›Full record

ArticleProceedings of the ... IEEE/RSJ International Conference on Intelligent Robots and Systems. IEEE/RSJ International Conference on Intelligent Robots and Systems2016

Nonholonomic Closed-loop Velocity Control of a Soft-tethered Magnetic Capsule Endoscope.

Addisu Z Taddese, Piotr R Slawinski, Keith L Obstein, Pietro Valdastri

Abstract read
In one paragraph

Article in Proceedings of the ... IEEE/RSJ International Conference on Intelligent Robots and Systems. IEEE/RSJ International Conference on Intelligent Robots and Systems, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Closed-loop control of soft continuum manipulators under tip follower actuation.The International journal of robotics research · 2021
    Article
  5. Article
  6. Sensitivity Ellipsoids for Force Control of Magnetic Robots with Localization Uncertainty.IEEE transactions on robotics : a publication of the IEEE Robotics and Automation Society · 2019
    Article
  7. Adaptive Dynamic Control for Magnetically Actuated Medical Robots.IEEE robotics and automation letters · 2019
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Autonomous Retroflexion of a Magnetic Flexible Endoscope.IEEE robotics and automation letters · 2017
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Addisu Z TaddeseMechanical Engineering Department, Vanderbilt University, Nashville, TN, USA.
Piotr R SlawinskiMechanical Engineering Department, Vanderbilt University, Nashville, TN, USA.
Keith L ObsteinMechanical Engineering Department, Vanderbilt University, Nashville, TN, USA; Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, TN, USA.
Pietro ValdastriSchool of Electronic and Electrical Engineering, University of Leeds, Leeds, UK; Mechanical Engineering Department, Vanderbilt University, Nashville, TN, USA.

Funding

A magnetic capsule endoscope for colonoscopy in patients with inflammatory bowel diseaseR01EB018992 · NIBIB · VANDERBILT UNIVERSITY MEDICAL CENTER · PI OBSTEIN, KEITH L · 2014 to 2024
$2.8M
NIBIB NIH HHS R01 EB018992
6 · The paper itself

Abstract

In this paper, we demonstrate velocity-level closed-loop control of a tethered magnetic capsule endoscope that is actuated via serial manipulator with a permanent magnet at its end-effector. Closed-loop control (2 degrees-of-freedom in position, and 2 in orientation) is made possible with the use of a real-time magnetic localization algorithm that utilizes the actuating magnetic field and thus does not require additional hardware. Velocity control is implemented to create smooth motion that is clinically necessary for colorectal cancer diagnostics. Our control algorithm generates a spline that passes through a set of input points that roughly defines the shape of the desired trajectory. The velocity controller acts in the tangential direction to the path, while a secondary position controller enforces a nonholonomic constraint on capsule motion. A soft nonholonomic constraint is naturally imposed by the lumen while we enforce a strict constraint for both more accurate estimation of tether disturbance and hypothesized intuitiveness for a clinician's teleoperation. An integrating disturbance force estimation control term is introduced to predict the disturbance of the tether. This paper presents the theoretical formulations and experimental validation of our methodology. Results show the system's ability to achieve a repeatable velocity step response with low steady-state error as well as ability of the tethered capsule to maneuver around a bend.

Identifiers

PMID28316873
PMCPMC5354359

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.