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Current Directions in Biomedical Engineering

Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering

Editor-in-Chief: Dössel, Olaf

Editorial Board: Augat, Peter / Buzug, Thorsten M. / Haueisen, Jens / Jockenhoevel, Stefan / Knaup-Gregori, Petra / Kraft, Marc / Lenarz, Thomas / Leonhardt, Steffen / Malberg, Hagen / Penzel, Thomas / Plank, Gernot / Radermacher, Klaus M. / Schkommodau, Erik / Stieglitz, Thomas / Urban, Gerald A.


CiteScore 2018: 0.47

Source Normalized Impact per Paper (SNIP) 2018: 0.377

Open Access
Online
ISSN
2364-5504
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Towards microprocessor-based control of droplet parameters for endoscopic laryngeal adductor reflex triggering

Jacob Friedemann Fast
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  • Leibniz Universität Hannover, Institute of Mechatronic Systems, Appelstr. 11 A, 30167 Hannover, Germany
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/ Apurva Muley
  • Leibniz Universität Hannover, Institute of Mechatronic Systems, Appelstr. 11 A, 30167 Hannover, Germany
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/ Daniela Kühn
  • Hannover Medical School, Department of Phoniatrics and Pediatric Audiology, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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/ Frederik Meisoll
  • Hannover Medical School, Department of Phoniatrics and Pediatric Audiology, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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/ Tobias Ortmaier
  • Leibniz Universität Hannover, Institute of Mechatronic Systems, Appelstr. 11 A, 30167 Hannover, Germany
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/ Michael Jungheim
  • Hannover Medical School, Department of Phoniatrics and Pediatric Audiology, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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/ Martin Ptok
  • Hannover Medical School, Department of Phoniatrics and Pediatric Audiology, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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/ Lüder Alexander Kahrs
  • Leibniz Universität Hannover, Institute of Mechatronic Systems, Appelstr. 11 A, 30167 Hannover, Germany
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Published Online: 2017-09-07 | DOI: https://doi.org/10.1515/cdbme-2017-0050

Abstract

The so-called Laryngeal Adductor Reflex (LAR) protects the respiratory tract from particle intrusion by quickly approximating the vocal folds to close the free glottal space. An impaired LAR may be associated with an increased risk of aspiration and other adverse conditions. To evaluate the integrity of the LAR, we recently developed an endoscopic prototype for LAR triggering by shooting accelerated droplets onto a predefined laryngeal target region. We now modified the existing droplet-dispensing system to adapt the fluid system pressure as well as the valve opening time to user-chosen values autonomously. This has been accomplished using a microcontroller board connected to a pressure sensor and a mechatronic syringe pump. For performance validation, we designed a measurement setup capable of tracking the droplet along a vertical trajectory. In addition to the experimental setup, the influence of parameters such as system pressure and valve opening time on the micro-droplet formation is presented. Further development will enable the physician to adjust the droplet momentum by setting a single input value on the microcontroller-based setup, thus further increasing usability of the diagnostic device.

Keywords: dysphagia; aspiration pneumonia; larynx; vocal folds; Laryngeal Adductor Reflex (LAR); droplet-dispensing system; solenoid valve

About the article

Published Online: 2017-09-07


Citation Information: Current Directions in Biomedical Engineering, Volume 3, Issue 2, Pages 239–243, ISSN (Online) 2364-5504, DOI: https://doi.org/10.1515/cdbme-2017-0050.

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©2017 Jacob F. Fast et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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