Issue StoriesNews
Hybrid Hearing Device Being Developed by CochlearWashington, DC—A new, experimental cochlear implant/hybrid hearing aid device—designed to supplement hearing without destroying it—is being developed and was the topic of a news story in the December 11th edition of The Los Angeles Times. The hybrid system uses a thinner, shorter bundle of electronics—10 mm in length compared to up to 28 mm for traditional implants—and positions the implant at the opening end of the cochlea, stimulating the auditory nerve only when high-frequency sound waves enter the ear. During implantation, the probe is not inserted as deeply into the cochlea as conventional cochlear implants, preserving much of the cochlea for natural hearing. This residual hearing can then be utilized for amplification with a hearing aid. The article reports that about 80 patients have received the hybrid device since 1999, and clinical trials are underway at 15 US sites. Preliminary results show that hearing has been retained in about 96% of the patients. Before surgery, patients were able to understand about one-third of words on standard hearing tests; after 1 year or more with the hybrid implant, scores increased to an average of 75%, reports the article. Hybrid implant users are also said to function better than traditional implant users in noisy situations and are better able to follow and appreciate music. If successful, the hybrid device could serve a population up to twice the size of the current cochlear implant market, which currently stands at about 25,000. The article interviews several noted hearing researchers and clinicians, including the NIDCD's James Battey, the University of Iowa's Bruce Gantz and Chris Turner who have been involved in the clinical investigation, and Aaron Parkinson of Cochlear Ltd.
UK Project Explores In-Body Power MicrogeneratorCaldicot, UK—A UK-based consortium of companies is developing an in-body microgenerator that will convert energy from human body movement into power for implanted medical devices, including cochlear implants, pacemakers, electrical stimulators, instrumented joints, and body area network applications. The project, led by Zarlink Semiconductor has received £500,000 (US$981,000) in funding from the UK Department of Trade and Industry (DTI), a sum that will be match-funded by the consortium. The two-year SIMM (self-energizing implantable medical micro system) project will prototype a device capable of harvesting energy from movement in or on the body, including joint movement and heartbeats. Body energy will be harvested by means of a microgenerator manufactured as a MEMS (micro-electrical-mechanical system). This prototype design is expected to achieve 10-100 times more power than previous attempts to harvest human energy. "This project has amazing potential to help huge numbers of people world-wide who have pacemakers and other medical implants," says UK Science and Innovation Minister Malcolm Wicks. "The ability to fit and forget implantable devices in terms of their power supply is groundbreaking with significant clinical and quality of life advances," says David Hatherall, external project leader at Zarlink's Caldicot facility and SIMM project coordinator. "The operating life and size requirements of the battery are a chief concern in the design of implanted medical devices. Providing an in-body power supply will reduce the dependence on batteries for implantable devices, and facilitate the design of new self-powered devices for applications currently not feasible due to battery life and space restrictions." According to industry research, there is great demand for improved power supply technology in many emerging medical applications, including neurostimulation, activity monitoring, bladder control valves, drug delivery systems, medical telemetry, and cochlear and retinal implants.
The multidisciplinary consortium is made up of six companies chosen for their core engineering skill, product exploitation potential and clinical excellence. The group consists of Finsbury Orthopaedics, Innos, InVivo Technology, Odstock Medical, Perpetuum Ltd, and Zarlink Semiconductor. A proof of concept prototype as a result of the project is expected to be released in 2007. To learn more about the SIMM project, visit: www.implantgen.com. Professor Turns Rapper to Attract More Audiology StudentsHempstead, NY—Levi Reiter, PhD, head of Hofstra University's audiology program and professor of speech-language-hearing sciences, was simply trying to promote the audiology profession and attract more audiologists to the field when he composed a rap song for freshman orientation and for their first day of classes in 2006. However, this rapping grandfather of 17 was unprepared for the "props" he received soon thereafter from students, colleagues, and even the American Speech-Language and Hearing Association (ASHA). In fact ASHA, the national association for speech pathologists and audiologists, is using Dr. Reiter's rap, titled Say Whut? in an ambitious program designed to recruit undergraduates across the country for careers in audiology. "It's a great icebreaker," says Reiter, a Chassidic Jew who also has a thriving audiology practice in Brooklyn. After initial positive feedback, he recorded Say Whut? in a professional studio with full instrumental backup. However, he is not thinking about Grammys or Billboard rankings. Getting students to consider a profession in the hearing sciences is reward enough for him. Some lyrics include:
The National Institute on Aging estimates that the need for audiologists serving senior citizens will increase by 50% by the year 2020. The Americans with Disabilities Act mandates that workplaces and other services be made accessible to persons with hearing impairments, an obligation which audiologists are optimally equipped to meet. In the January/February Hearing Products Report...
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