Universität zu Köln

Schwarz, David, Pazen, David, Gostian, Antoniu-Oreste, Lueers, Jan-Christoffer and Huettenbrink, Karl Bernd (2019). Evaluation of Coupling Efficiency in Round Window Vibroplasty With a New Handheld Probe. Otol. Neurotol., 40 (1). S. E40 - 8. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 1537-4505

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Abstract

Hypothesis: A handheld measuring probe was developed that analyzes the vibration characteristics of the stapes footplate after backward stimulation of the cochlea in round window vibroplasty. In temporal bone experiments, the measuring accuracy of the probe was tested. Background: In round window vibroplasty, the effectiveness of the transmitted vibrations into the inner ear is provided with limited visual and tactile information. Currently, there is no objective measuring tool available. Methods: In five unfixed temporal bones, a floating mass transducer was coupled to the round window membrane. During the excitation with different voltage levels (0, 5, 25, 100, 300 mV root mean square) corresponding to 0, 80, 94, 106, and 116 dB equivalent ear canal sound pressure respectively, the deflections of the footplate were recorded in parallel by laser Doppler vibrometry and the measuring probe. Results: The probe allowed for differentiation of the coupling efficiency. The measured footplate vibrations from the excitation levels of 106 dB (and 116 dB) were statistically significant compared with the testing without excitation. The footplate deflections determined in parallel by laser Doppler vibrometry showed comparable results. Conclusion: In principal, the newly developed measuring probe allows for measuring the quality of retrograde cochlear excitation in a round window vibroplasty by detecting footplate vibrations. Further developments are directed for its application in clinical, intraoperative procedures.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schwarz, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Pazen, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Gostian, Antoniu-Oreste UNSPECIFIED UNSPECIFIED UNSPECIFIED Lueers, Jan-Christoffer UNSPECIFIED UNSPECIFIED UNSPECIFIED Huettenbrink, Karl Bernd UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-139861
DOI:	10.1097/MAO.0000000000002058
Journal or Publication Title:	Otol. Neurotol.
Volume:	40
Number:	1
Page Range:	S. E40 - 8
Date:	2019
Publisher:	LIPPINCOTT WILLIAMS & WILKINS
Place of Publication:	PHILADELPHIA
ISSN:	1537-4505
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MIDDLE-EAR SURGERY; OSSICULAR CHAIN MOBILITY; FLOATING MASS TRANSDUCER; STAPES MOBILITY; STIMULATION Multiple languages Clinical Neurology; Otorhinolaryngology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13986