Magnetoelastic sensors as a new tool for laryngeal research

Conclusions. The use of custom-built magnetoelastic sensors designed for insertion in the larynx to measure the force of transverse deformation of the thyroarytenoid and cricothyroid muscles was examined. Objectives. The availability of sensors that transduce deformation force into an electrical cur...

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Bibliographic Details
Published in:Acta oto-laryngologica 2007-01, Vol.127 (11), p.1182-1187
Main Authors: Iglesias Moreno, M.C., Gil-Loyzaga, P., Rodríguez Gómez, F., Franco Carcedo, C., González Fernández, J., Pina Martínez, E., Hernando Grande, A., Poch Broto, J.
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
cricothyroid
deglutition
Deglutition - physiology
Dogs
Elasticity
Electromyography - methods
Equipment Design
Isometric Contraction - physiology
Laryngeal Muscles - physiology
Larynx
Larynx - physiology
Magnetics - instrumentation
magnetoelastic sensor
Male
Medical sciences
Muscle Strength - physiology
Otorhinolaryngology. Stomatology
phonation
Phonation - physiology
thyroarytenoid
Transducers
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Summary:Conclusions. The use of custom-built magnetoelastic sensors designed for insertion in the larynx to measure the force of transverse deformation of the thyroarytenoid and cricothyroid muscles was examined. Objectives. The availability of sensors that transduce deformation force into an electrical current (measurable in millivolts) suggested that such sensors could be used to study muscle function in the canine larynx. This study aimed to obtain information about the force exercised by larynx muscles on the sensor in an experiment in vivo. Materials and methods. The results of six surgical interventions in three dogs using four magnetoelastic sensors are described. The sensor and insertion technique were atraumatic. One dog underwent surgery four times to study the morbidity, reliability and reproducibility of the technique. An electromyographic recording was made at the same time that sensor response was registered to compare results with a standardized technique. Results. We obtained 584 regular responses: 256 deglutitions (150 thyroarytenoid and 106 cricothyroid recordings) and 328 phonations (223 thyroarytenoid and 105 cricothyroid recordings). No signs of injury or functional deficit were observed after any intervention. In the dog that underwent four interventions, results were consistent after each intervention.
ISSN:0001-6489
1651-2251
DOI:10.1080/00016480600987867