Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Improving the quality of life for larynx cancer patients

21.10.2003


Currently, voice rehabilitation of larynx cancer patients is performed by inserting a one-way shunt valve between trachea and oesophagus that prevents food and liquid from entering the trachea. Pressing the tracheal opening with a finger forces exhaled air through the shunt valve to the oesophagus, where soft tissue structures serve as a substitute voice. However, the voice is in many cases of poor quality and the process creates a mental barrier during speaking, as patients have to literally point at their handicap.



The NEWVOICE project aims to improve the quality of life for laryngectomees by developing a new voice-producing shunt prosthesis that is able to produce a voice with sufficient loudness, adjustable fundamental frequency and natural intonation.

Dr. Bart Verkerke, Project Manager of the Department of BioMedical Engineering at the main partner, the University of Groningen, describes how the partners initiated this work in a previous EUREKA project. “Most of the NEWVOICE participants were involved in project E! 723 ARTIFICIAL LARYNX, during which we gained a lot of the expertise in medical devices to improve the rehabilitation process that will be used in this project.”


Tackling problems
The new voice-producing element that was inspired by the lips of a trumpet player is working well technically, but poses a prototyping problem as it is too big to fit into an existing shunt valve. Work is progressing to try to develop a small voice-producing element that still has the proper frequency characteristics. At the same time, the project also aims to develop a new fixation technique, the so-called tissue connector, which allows for a larger shunt valve.

Six different concepts for the tissue connector that fastens the shunt valve in place are being tested as “it was impossible to determine which of the alternatives was the most appropriate. We will perform a pilot animal study to test them and choose the most effective,” says Verkerke.

A critical problem facing the project team is that food and fluid passing the shunt valve stimulates the formation of a biofilm. “This causes the shunt valve to malfunction, making it necessary to replace the shunt valve frequently, on average every four months,” explains Dr Mark Waters, Senior Lecturer in Biomaterials at Cardiff Dental School. “The task of the UK partners is to develop silicone rubber materials which are less susceptible to biofilm formation.”

The project has already developed coatings that slow down or prevent biofilm adhesion that could extend the life of a shunt valve for some patients considerably.

According to Verkerke, “the major challenges lying ahead include finding a material that can resist all yeasts and bacteria, proving that the concept of the tissue connector works, and finding a voice-producing element small enough to fit into a shunt valve.”

Nicola Vatthauer | alfa
Further information:
http://www.eureka.be

More articles from Health and Medicine:

nachricht Inselspital: Fewer CT scans needed after cerebral bleeding
20.03.2019 | Universitätsspital Bern

nachricht Building blocks for new medications: the University of Graz is seeking a technology partner
19.03.2019 | Karl-Franzens-Universität Graz

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: The taming of the light screw

DESY and MPSD scientists create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.

The nonlinear process of high-order harmonic generation (HHG) in gases is one of the cornerstones of attosecond science (an attosecond is a billionth of a...

Im Focus: Magnetic micro-boats

Nano- and microtechnology are promising candidates not only for medical applications such as drug delivery but also for the creation of little robots or flexible integrated sensors. Scientists from the Max Planck Institute for Polymer Research (MPI-P) have created magnetic microparticles, with a newly developed method, that could pave the way for building micro-motors or guiding drugs in the human body to a target, like a tumor. The preparation of such structures as well as their remote-control can be regulated using magnetic fields and therefore can find application in an array of domains.

The magnetic properties of a material control how this material responds to the presence of a magnetic field. Iron oxide is the main component of rust but also...

Im Focus: Self-healing coating made of corn starch makes small scratches disappear through heat

Due to the special arrangement of its molecules, a new coating made of corn starch is able to repair small scratches by itself through heat: The cross-linking via ring-shaped molecules makes the material mobile, so that it compensates for the scratches and these disappear again.

Superficial micro-scratches on the car body or on other high-gloss surfaces are harmless, but annoying. Especially in the luxury segment such surfaces are...

Im Focus: Stellar cartography

The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.

A special technique allows astronomers to resolve the surfaces of faraway stars. Those are otherwise only seen as point sources, even in the largest telescopes...

Im Focus: Heading towards a tsunami of light

Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.

"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

International Modelica Conference with 330 visitors from 21 countries at OTH Regensburg

11.03.2019 | Event News

Selection Completed: 580 Young Scientists from 88 Countries at the Lindau Nobel Laureate Meeting

01.03.2019 | Event News

LightMAT 2019 – 3rd International Conference on Light Materials – Science and Technology

28.02.2019 | Event News

 
Latest News

Solving the efficiency of Gram-negative bacteria

22.03.2019 | Life Sciences

Bacteria bide their time when antibiotics attack

22.03.2019 | Life Sciences

Open source software helps researchers extract key insights from huge sensor datasets

22.03.2019 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>