Alternative Voice After Laryngectomy Using a Sound‐Producing Voice Prosthesis

Torn, M. van der; Vries, Marcel P. de; Festen, JM; Leeuw, Irma M. Verdonck‐de; Mahieu, Hans F.

doi:10.1097/00005537-200102000-00027

Cited by 20 publications

(23 citation statements)

References 28 publications

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“…De Vries et al 4,5 developed a different kind of VPE, consisting of an outwards-striking silicone rubber lip placed in a square housing. In clinical tests, however, Van der Torn et al 29 observed that the functioning of the silicone rubber lip was also sensitive to the mucus that entered the prototype. The lip sometimes stuck to the interior of its housing.…”

Section: Introductionmentioning

confidence: 99%

Development of a Double-Membrane Sound Generator for Application in a Voice-Producing Element for Laryngectomized Patients

et al. 2006

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Abstract-For voice rehabilitation after total laryngectomy a shunt valve is usually placed in the tracheo-esophageal (TE) wall, thereby enabling the production of a TE voice. Some patients, however, are unable to produce a voice of sufficient quality. Furthermore, the TE voice is low pitched, which presents a problem especially for female laryngectomized patients. The voice quality after laryngectomy might be improved by introducing a voice-producing element (VPE) into the TE shunt valve. In this study a sound generator was developed that is suitable for application in such a VPE. This sound generator consists of two elastic membranes placed parallel inside a circular housing. A substitute voice source is created when the membranes start to vibrate via a constant flow of air passing between them. To determine the optimal membrane configuration for proper functioning under physiological conditions, up-scaled physical VPE models with different membrane geometries were evaluated using in vitro experimental tests. For certain membrane geometries the tests showed that a basic sound, containing multiple harmonics, could be successfully produced under physiological air pressure and airflow conditions. The fundamental frequency (60-95 Hz) and sound pressure level (57-78 dB, at 15 cm microphone distance) were regulated via changes in the driving pressure, thereby enabling the possibility of intonation in laryngectomized patients' speech. The obtained frequency range is considered appropriate for producing a substitute voice source for female patients. The geometry considerations in this study can be used for the development of a true scale VPE that can be evaluated clinically, to eventually replace the voice after laryngectomy.

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Section: Introductionmentioning

confidence: 99%

Development of a Double-Membrane Sound Generator for Application in a Voice-Producing Element for Laryngectomized Patients

et al. 2006

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“…4 An example of frequency spectrum of sound produced by voice producing element at driving pressure of 2 kPa. F 0 corresponds to the vibration frequency of the oscillator.…”

Section: Equipment and Analysis Methodsmentioning

confidence: 99%

“…4, 2013 Journal of Advanced Mechanical Design, Systems, and Manufacturing the proposed methods. However, both produce only monotonous voices, and it is reported that their functions deteriorate as secretions adhere to the surface of the material (4) . Tack et al succeeded in changing the pitch of the voice by an average of 5.1 semitones according to the expiratory pressure at a stable and appropriate pitch by placing two elastic resin membranes parallel inside the shunt valve such that they act as a vibrating valve (5), (6) .…”

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confidence: 99%

An Artificial Larynx Built in TE Shunt Valve That Produces Substitute Voice by Only Patient's Own Expiration (Preliminary Study for Suitable Tone Pitch and Its Controllability)

Kourakata

Sakamoto

Nakao

2013

JAMDSM

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A large portion of patients of larynx cancer tekes total laryngectomy and loses their original voice consequently. Some ways to obtain substitute voice for total laryngectomees have been presented, however, each of them cannot conquer inconveniences, tone quality, extremely low tone, monotonousness etc. We invented very simple, small enough to be built in TE (tracheaesophageal) shunt valve but functional substitute voice that is driven by patient's own expiration and its tone pitch can be controlled by expiratory pressure simultaneously. The new device has an outward-striking membrane as an oscillating valve and a set of piston-cylinder mechanism, which controls oscillator's tension and alters pitch of sound. As results of performance experiments applied to the prototype model made as twice scale as an actual dimension, the device produces the lowest sound frequency of 205 Hz and pitch range of 374 cent being approximately proportional to driving air pressure between 0.8 and 2.2 kPa. It is said that normal pitch of female voice is around 210 Hz, thus we consider the possibility of the device as a new substitute voice was shown that contributes to improvement of total laryngectomees' QOL particularly to female patients.

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“…Designs have been recently developed and tested (De Vries et al, 2000;Van der Torn et al, 2001;Tack et al, 2006). These designs incorporate a vibrating reed-or membrane-type element within the shunt valve lumen, the structural characteristics of which yield flow-induced vibrations at reasonable lung pressures.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of the flow-induced vibration characteristics of a voice-producing element for laryngectomized patients

Thomson

Tack

Verkerke

2007

Journal of Biomechanics

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A computational model for exploring the design of a voice-producing voice prosthesis, or voiceproducing element (VPE), is presented. The VPE is intended for use by laryngectomized patients who cannot benefit from current speech rehabilitation techniques. Previous experiments have focused on the design of a double-membrane voice generator as a VPE. For optimization studies, a numerical model has been developed. The numerical model introduced incorporates the finite element (FE) method to solve for the flow-induced vibrations of the VPE system, including airflow coupled with a mass-loaded membrane. The FE model includes distinct but coupled fluid and solid domains. The flow solver is governed by the incompressible, laminar, unsteady NavierStokes equations. The solid solver allows for large deformation, large strain, and collision. It is first shown that the model satisfactorily represents previously published experimental results in terms of frequency and flow rate, enabling the model for use as a design tool. The model is then used to study the influence of geometric scaling, membrane thickness, membrane stiffness, and slightly convergent or divergent channel geometry on the model response. It is shown that physiological allowable changes in the latter three device parameters alone will not be sufficient to generate the desired reduction in fundamental frequency. However, their effects are quantified and it is shown that membrane stiffness and included angle should be considered in future designs.

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Alternative Voice After Laryngectomy Using a Sound‐Producing Voice Prosthesis

Cited by 20 publications

References 28 publications

Development of a Double-Membrane Sound Generator for Application in a Voice-Producing Element for Laryngectomized Patients

Development of a Double-Membrane Sound Generator for Application in a Voice-Producing Element for Laryngectomized Patients

An Artificial Larynx Built in TE Shunt Valve That Produces Substitute Voice by Only Patient's Own Expiration (Preliminary Study for Suitable Tone Pitch and Its Controllability)

A numerical study of the flow-induced vibration characteristics of a voice-producing element for laryngectomized patients

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