ID : N-1467 Date : 2018/03/13 - 10:37
(Persia Digest) - An Iranian scientist has developed an artificial larynx that uses the patient's respiratory system and generates a high-quality voice.
Farzaneh Ahmadi, an Iranian researcher, and the team of scientists at the MARCS Institute at Western Sydney University have tested an artificial larynx that can generate a high-quality voice.
Unlike current prostheses that require laryngeal and nerve inputs, the Pneumatic Artificial Larynx (PAL) device uses the respiratory system and does not require surgery to apply.
"The existing standard of care requires the surgical application of prosthetic devices into the open wound in the neck, which is left after a laryngectomy so that a patient can breathe," says Dr. Farzaneh Ahmadi. "The surgery is invasive; infections and complications are common; and the resulting voice is often hoarse and whispery," she adds.
In a pre-clinical trial, researchers working on The Bionic Voice research project developed an electronic adaption of a PAL device called the Pneumatic Bionic Voice (PBV), which uses the patient's breath to create a humming sound that is then converted to speech with movement of the lips and tongue.
The study found that a device exclusively driven by respiration could in fact aid in recreating the function of the larynx without any nerve input and produce a quality of voice better than the existing gold standard.
This device includes a tube that connects the stoma to the person's mouth. However, the team has plans to develop a functional PBV prosthesis in the form of a "control unit" that can be applied over the stoma, and a "voice source" unit that sits on the roof of the mouth. Dr. Ahmadi claims this device would be the first non-invasive, electronic voice prosthesis in the world.