Navigation Links
New cochlear implant could improve outcomes for patients
Date:6/30/2010

AUGUSTA, GA. More electrodes and a thinner, more flexible wire inserted further into the inner ear could improve conventional cochlear implants, a team of Medical College of Georgia and Georgia Institute of Technology researchers say.

Candidates for cochlear implantsan estimated million in the United States aloneinclude children and adults with profound deafness in both ears. An implant does not restore normal hearing but simulates sounds in the environment, including speech. More electrodes pick up more external sound and the flexible wire allows those sounds to be transmitted over more of the auditory nerves.

Researchers will present their findings about the new device at the 11th International Conference on Cochlear Implants and Other Auditory Implantable Technology in Stockholm, Sweden June 30 July 3.

The snail-shaped cochlea is difficult to access, particularly considering the multiple components involved in a cochlear implant, said Dr. Brian McKinnon, assistant professor of neurotology/otology in the Department of Otolaryngology in the MCG School of Medicine. Those components include of an external microphone, speech processor and transmitter and an internal group of electrodes arranged on a thin wire that stimulate the auditory nerve.

"The wire in traditional implants is fragile and thin and may buckle," he said. "We try to get it as far into the center of the cochlea, where the nerves are bundled, as possible the idea being that the more electrodes on the nerves, the better the sound."

Because they buckle, physicians typically can't optimally insert the wire, and electrodes can, in some cases, injure the cochlea, he said.

The new device, called the thin film array, pairs 12 electrodes on a thinner, more flexible wire. The wire's thinness has, so far, allowed surgeons to place more electrodes into the cochlea than they could with a conventional electrode. With more electrodes than standard models, the implant improves the quality of sound.

The array was developed in the Biosystems Interface Laboratory at the Georgia Institute of Technology by Assistant Professor Pamela Bhatti, a biomedical engineer, and Georgia Tech student Jessica Falcone. McKinnon and Dr. Kenneth Iverson, a third-year otolaryngology resident, tested it on cadaver models

"This device could mean could mean a several-fold improvement of the sound's resolution," Iverson said. "For the patient, it would be like the difference between hearing a Bach concerto played by a music box versus a quartet."

McKinnon compared the improvement to adding more fingers and more notes to a piano performance.

There are other benefits too.

"Because the thinner wire means less trauma to the ear, it could also mean more preservation of residual hearing for patients," Iverson said.


'/>"/>

Contact: Toni Baker
tbaker@mail.mcg.edu
706-721-4421
Medical College of Georgia
Source:Eurekalert  

Related biology news :

1. Technique yields potential biological substitute for dental implants
2. 20 years of PGD (pre-implantation genetic diagnosis)
3. Smart orthopedic implants and self-fitting tissue scaffolding created by UMMS researchers
4. New tissue-hugging implant maps heart electrical activity in unprecedented detail
5. New material mimics bone to create better biomedical implants
6. Smart coating opens door to safer hip, knee and dental implants
7. A step toward better brain implants using conducting polymer nanotubes
8. Scientists closer to making implantable bone material, thanks to new research
9. Preimplantation genetic diagnosis may pose neurological risks
10. Can a new implant coating technique create a new six million dollar man?
11. Female human embryos adjust the balance of X chromosomes before implantation
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New cochlear implant could improve outcomes for patients
(Date:3/28/2017)... , March 28, 2017 The ... Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, ... Region - Global Forecast to 2022", published by MarketsandMarkets, ... 2016 and is projected to reach USD 75.64 Billion ... and 2022. The base year considered for the study ...
(Date:3/24/2017)... 24, 2017 The Controller General of Immigration from ... Abdulla Algeen have received the prestigious international IAIR Award for the ... Continue Reading ... ... Controller Abdulla Algeen (small picture on the right) have received the IAIR ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , Oct. ... Cancer Research, London (ICR) and University ... SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple myeloma ... MUK nine . The University of Leeds ... partly funded by Myeloma UK, and ICR will perform the ...
(Date:10/10/2017)... ... 2017 , ... San Diego-based team building and cooking events company, Lajollacooks4u, has ... The bold new look is part of a transformation to increase awareness, appeal to ... period. , It will also expand its service offering from its signature gourmet cooking ...
(Date:10/10/2017)... 10, 2017 International research firm Parks Associates announced ... at the TMA 2017 Annual Meeting , October 11 in ... residential home security market and how smart safety and security products impact ... Parks Associates: Smart Home ... "The residential security market has ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology: