HOME >> BIOLOGY >> NEWS
Improved speech without vocal cords

Dutch otolaryngologist Marein van der Torn hoped to develop a prosthesis that would improve the voice of people who had lost their vocal cords. He investigated the possibilities of a new type of voice prosthesis that produces vocal sound. The concept could be useful for female patients with a very weak voice: it would strengthen their voice and enable it to achieve a female pitch again. However, various practical problems need to be solved before the voice prosthesis can be used.

Sometimes the larynx, containing the vocal cords, needs to be surgically removed in throat cancer patients. Since the 1980s most of these patients have learnt to speak again with the help of a small silicone rubber valve placed between their windpipe and oesophagus.

This valve enables them to use the uppermost sphincter of their oesophagus as a sort of vocal chord. However, this alternative voice sounds often gruff and is lower than the natural voice. Female patients in particular find the low pitch troublesome. Moreover, if the uppermost sphincter of the oesophagus is too weak, the voice is not strong enough to be understood clearly.

Together with the University of Groningen, Van der Torn and his colleagues at the Vrije Universiteit in Amsterdam developed a new type of valve that produces its own vocal sound. That sound is produced by a small silicone rubber flap in the valve, which acts as an artificial vocal chord.

A different flap was developed for male voices than for female voices. The vibrational behaviour of these flaps, the air resistance and the sound produced were extensively investigated in vitro. These new voice prostheses were also trialled in a group of patients at the VU University Medical Center and compared against the voices of these patients without the silicone rubber flap.

From these trials it emerged that for the time being only female patients with a very weak voice would benefit from the new voice prosthesis: their voice
'"/>

Contact: Marein van der Torn, MD
m@vandertorn.com
31-203-203-039
Netherlands Organization for Scientific Research
19-Dec-2005


Page: 1 2

Related biology news :

1. Improved NIST SRM aids lead poisoning detection
2. Improved predictions of warming-induced extinctions sought
3. Improved imaging for identifying breast cancer in overweight women
4. Improved blood safety measures from Pall can increase platelet availability
5. Improved statistical tools reveal many linked loci
6. Improved process of drying lumber may save millions
7. Improved cancer treatments aim of new biology research program
8. Improved recipe for magnetic brain stimulation
9. Improved molecular switch could serve as sensor, medical tool
10. Essential tones of music rooted in human speech
11. US hearing health, better telephone speech

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/29/2018)... ... August 29, 2018 , ... ... non-invasive technology to identify specific chromosomal abnormalities using morphological assessment through artificial ... and Australia-based Life Whisperer suggests that artificial intelligence (AI) ...
(Date:8/23/2018)... ... August 21, 2018 , ... CRISPR-Cas9 gene ... types and species for the robust functional interrogation of complex biological processes. Gene ... T-cell based immunotherapies, the study of the autoimmunity, the understanding of host-pathogen dynamics ...
(Date:8/21/2018)... ... 21, 2018 , ... Whether it be online or through ... offering customers a successful experience. When browsing the new site in search ... with relevant details such as technical manuals, application notes, and instrument compatibility readily ...
Breaking Biology News(10 mins):
(Date:8/29/2018)... YORBA LINDA, Calif. (PRWEB) , ... August 28, 2018 , ... ... engineers, and scientists from around the world, is proud to announce the launch of ... events LabRoots offers for a chance to win one of LabRoots most popular shirts. ...
(Date:8/26/2018)... , ... August 24, 2018 , ... ... that stem cell-derived exosomes dramatically relieves atopic dermatitis and inhibits a variety of ... According to the paper, the symptoms of mice having severe atopic dermatitis were ...
(Date:8/21/2018)... (PRWEB) , ... August 21, ... ... a software company specializing in medical device compliance and commercialization, has just ... Cockpit® platform. , Written and presented by Dr. Mario Kossmann, ESEP at ...
(Date:8/17/2018)... ... August 16, 2018 , ... KCAS Bioanalytical and Biomarker Services, ... of their team. Dr. Dawn Dufield, Ph.D., joins KCAS as Director of BioPharma. ... group that will specialize in developing quantitative LC-MS/MS assays for biopharma molecules. Dr. ...
Breaking Biology Technology:
Cached News: