Implantable Hearing Aids
One
of the new hearing aid technologies is the implantable aid. This section
contains general information about implantable aids, how they work,
their advantages and disadvantages, etc.
April
2000 - For a quick overview of several of the current implantable
hearing aid prototypes, see the Implantable
Hearing Aid Revue.
June
2000 - The University of Washington is working with a
somewhat different
July 2002 - From the Sunday Plenary Session of
the 2002 SHHH Convention, here's
Dr. George Gates discussing implantable hearing aids.
January 2003 -
What's the latest in implantable hearing aids? It may be that nanotechnology
will soon be applied to make better and smaller implantable hearing aids.
December 2005 -
Cochlear Working on Implantable Hearing Aid
December 2005 -
University of Oklahoma Scientist Working on Implantable Aid
January
2006 - Interested in seeing what's involved in surgery to implant
the BAHA hearing aid? Here's
a set of slides that display the process. But be forewarned that
some of the images are pretty graphic!
April 2006 -
OU
prof works on implantable hearing aid
April 2006 -
Totally Implantable Hearing Aid in
Trials
May 2006 -
New device could help people with hearing problems
September 2006 -
Otologics Announces a Clinical Research Study for a New
Fully Implantable Hearing Device
September 2006 -
Carina(TM) Fully Implantable Hearing Device to be
Demonstrated
September 2006 - Here's Bob MacPherson with his
take on the two implantable aids currently in clinical trials.
December 2006 - Envoy
Implantable Hearing Aid Trials Underway
March 2007 - Soundbridge(r)
Middle Ear Implant Now Commercially Available from MED-EL
March 2007 - EaglePicher Announces World's Smallest
Implantable Medical Battery
April 2007 - Otologics'
Carina implantable hearing aid in trials
August 2007 -
Is an Implantable Hearing Aid for You?
September 2007 - Implantable Hearing Aid in
Trials
November 2007 -
The Otologics Fully Implantable Hearing System
December 2007 -
A fully implantable hearing aid is showing
promise.
January 2008 -
First Implantation in Soundbridge Clinical Trial for
Conductive/Mixed Losses
May 2008 -
Vibrant Soundbridge Comes to Israel
June 2008 - UNC Hospitals performs second
U.S. implant of Vibrant Soundbridge(r) (VSB)
July 2008 -
California Clinic Testing Otologics Implantable
Hearing Aid
August 2008 - The future of implantable hearing devices
September 2008 - The Otologics fully implantable hearing
aid
March 2009 - Implantable Hearing Aids Have Arrived!
December 2009 - Otologics Offers Carina Implantable
Hearing System
December 2009 - FDA Panel to Consider First
Fully-Implantable Hearing Aid
December 2009 - Esteem Totally Implantable Hearing
Device Under Consideration for Approval in US
December 2009 - Implantable Hearing Aid Gets Nod from
FDA Panel
March 2010 - FDA Approves First Fully Implantable
Hearing Device
August 2010 - MED-EL Receives FDA Approval for Amadé
Audio Processor
October 2010 - Rush Limbaugh powers Envoy Medical to new
fame, investors
November 2010 - Esteem Hearing System
February 2011 - UK's First Totally Implantable Hearing Aid
Fitted
March 2011 - Implantable Bone Conduction Hearing Aids
March 2011 - Invisible Extended Wear Hearing
Aids
March 2011 - Middle-Ear Implants and Osseointegrated
Implants
April 2011 - Researcher Develops Inexpensive Implantable
Hearing Aid
June 2011 - FDA OKs Sophono's Implantable Bone
Conduction Hearing Device
October 2011 - Esteem(r) Recipient's Touching Video
Viewed by Over 4 Million on YouTube
October 2011 - The Deaf Hearing Again? With a Middle Ear
Implant? Is it Possible?
October 2011 - Viral hearing aid video sends Envoy
inquiries up 150 percent
More on this and related
topics
~~~~~~~~~~~~~~~~~~~
April
2000
Editor: We recently published information about a fully implantable
hearing aid called the TICA.
It was developed in Germany and was implanted into the first recipient
in December 1999. There are several other companies working on similar
technology.
Thanks to the Northern Virginia Resource Center for this information.
~~~~~~~~~~~~~~~~~~~
This kind of implant, referred to by the acronym IHA, now in the
final stages of research and development, can be used by people having
sensorineural hearing loss but a healthy middle ear. IHA's convert sound
to vibrations inside the middle ear. This gives IHA's several advantages
over traditional hearing aids. First, if the bones of the middle ear can
be directly moved, sound quality may be improved, along with much less
feedback. Second, there are no external components to the IHA, which is
completely implantable.
At least three prototypes are being tested in human trials. Either
the receiver, which collects sound energy, or the entire hearing device
is surgically inserted into the middle ear. The surgical procedure is
described generally as follows: Skin and tissues around the ear are laid
back, and a magnet (which may or may not include electronics) is nestled
into the bone behind the ear. A component is then attached to one of the
middle ear bones.
One prototype is called the Envoy
Totally Implantable Hearing Restoration System. This device uses the
person's eardrum as the microphone that sends sound energy to the
piezoelectric crystal in the middle ear.
Two other prototypes use electromagnetic technology. The
Vibrant Soundbridge (made by Symphonix Devices, Inc.), has already
received an Investigational Device Exemption from the FDA. (IDE is a
preliminary stage in receiving FDA approval.) Otologies is also in the
IDE state of the FDA process. Both these systems are partially
implantable; only the receiver, consisting of the magnet and transducing
coil, is implanted. The microphone and amplifier are worn externally
like a BTE processor. These devices may be more suitable for a wider
range of hearing losses than the one using piezoelectric technology,
which can be used by those having no more than a moderate (60 dB)
hearing loss.
~~~~~~~~~~~~~~~~~~~
January 2003
Editor: The National Institute on Deafness and Other Communication
Disorders (NIDCD) is a component of the National Institute of Health.
They were established in 1988 to "conduct and support biomedical
and behavioral research and research training in the normal and
disordered processes of hearing, balance, smell, taste, voice, speech,
and language." Part of their $350 million budget is used to fund
research by American corporations under a program called the Small
Business Innovation Research (SBIR) Program. Here's a recent press
release regarding the use of nanotechnology to improve implantable
hearing devices. For more information, please point your browser to
http://www.nidcd.nih.gov. (Thanks to bhNEWS for the lead on this story.)
~~~~~~~~~~~~~~~~~~~
NIDCD-funded Researchers Look to Nanotechnology to Build Smaller,
Mightier Implantable Hearing Device
NIDCD has awarded a Small Business Innovation Research (SBIR) grant
to NanoBioMagnetics Inc. (NBMI), an Oklahoma City, Okla., bioengineering
firm, to investigate the use of nanotechnology in developing components
for a new generation of implantable hearing devices. Hough Ear Institute
(HEI), a nonprofit research, educational, and humanitarian service
institute, also of Oklahoma City, will help design and test the new
components. Nanotechnology is the branch of science in which materials
are manipulated atom by atom and molecule by molecule to create
information systems and mechanical devices of exceedingly small size.
Implantable hearing devices are an alternative to hearing aids that use
externally- and internally-placed electronic components to deliver sound
vibrations directly to the bones of the middle ear. The use of
nanotechnology for the implantable hearing device could help produce
components small enough to fit inside the middle ear but more powerful
than today's devices.
NIDCD's SBIR program provides funds to businesses to facilitate the
research, development, and commercialization of technologies that can
assist people who have communication disorders. A similar program, the
Small Business Technology Transfer (STTR) program, provides funds to
businesses that work cooperatively with research institutions to help
move useful technologies developed in the laboratory into the
marketplace.
OU
prof works to aid hearing
~~~~~~~~~~~~~~~~~~~
December
2005
Australia's
Cochlear Corporation has long been known as the world's leading producer
of cochlear implants. But that's a fairly limited market, with only
17,000 implants performed worldwide last year. Cochlear thinks there is
a far larger market for implantable hearing aids (although they don't
like that term), and they're working with Phonak of Switzerland (one of
the leading hearing aid producers) to develop this technology. Full
Story
~~~~~~~~~~~~~~~~~~~
December 2005
A
University of Oklahoma associate scientist is working to develop the
world's first hearing aid that would be completely implanted within
one's head. . . . the system is designed to help people with moderate
sensory hearing loss, the gradual kind that affects older people and
those exposed to loud noise over an extended period of time. The
electromagnetic implant drives more force to the inner ear, which allows
the cochlea to pick up sound that had been missing. Full
Story
~~~~~~~~~~~~~~~~~
April 2006
An
estimated 10-percent of the American population has hearing loss, that's
30 million people. Experts said only a fraction of that number wear
hearing aids. Image, poor sound quality, and expense are three main
reasons. The totally implantable hearing aid could change everything. The
speech processor is imbedded behind the ear, and then little wires go
through the mastoid bone directly to two other bones. The driver wire
attaches to stapes. It vibrates the tiny bone and conducts sound into the
inner ear. The other sensor wire is a Piezoelectric crystal attached to
the bone connected to the eardrum.
Full Story
~~~~~~~~~~~~~~~~~~~
May 2006
Millions
of people struggle to hear. They find it hard to hear the television,
their phone -- even their loved one's voices. Many wear hearing aids, but
that's not always enough. As 7News Anchor Mitch Jelniker reported
recently, a new device is being tested in Colorado that could open up a
whole new world for people who have difficulty hearing.
Full Story
~~~~~~~~~~~~~~~~~~~
September
2006
Editor:
Things have been pretty quiet on the implantable hearing aid front for
awhile. Now they're heating up again with this announcement of a clinical
research study from Otologics.
~~~~~~~~~~~~~~~~~
Otologics,
LLC, a Boulder, Colorado-based developer of hearing devices is currently
enrolling patients in a clinical research study for a new fully
implantable hearing device.
For many
people, a hearing aid restricts activities because it has to be removed
before participation. It can prevent them from swimming, aerobic
activities, or playing tennis, and can interfere with sleeping and
showering because of perspiration or other moisture. In short, it can make
the simple, enjoyable things in life more difficult.
A new
investigational, fully implantable hearing device from Otologics is now
being evaluated. Unlike traditional hearing aids, this device is
surgically implanted under the skin. Nothing is worn in the ear canal and
no part of the device is visible externally.
Patients
18 years of age or older, with moderate to severe hearing loss, who are
currently wearing a hearing aid and who speak English, may be eligible to
participate in this clinical research study. The sponsor is covering
physician and surgical costs. Participants will be responsible for the
cost of the actual hearing device, which is $12,500, as well as personal
transportation for clinic visits.
Call
1-866-394-7320 for more information about the clinical research study for
this investigational, fully implantable hearing device.
Otologics,
LLC is a Boulder, Colorado-based medical device company, which is
dedicated to developing implantable hearing devices designed to enhance
the quality of life of the hearing impaired. Otologics, LLC is located at
5445 Airport Blvd Boulder, CO 80301. For more information contact
Annemarie Osborne at MediaInquiries@Otologics.com or (949) 916-1147.
~~~~~~~~~~~~~~~~~
September 2006
Editor: Here's more news on
Carina, the fully implantable hearing device (note that they don't call it
a hearing aid) from Otologics. It appears to be interesting and promising
technology.
~~~~~~~~~~~~~~~~~
Otologics, a medical device
manufacturer based in Boulder, Colorado, is the developer of a
revolutionary, fully implantable hearing device for the moderate to
severely hearing impaired population.
A special course entitled
Otologics Implantable Hearing Device will be presented at the European
Academy of Neural Otology on Friday, September 22 at 6:30 with a special
guest appearance from one of the patients implanted with the Carina
device. The device will be presented again on Saturday, September 23rd
from 11:15 to 12:00. The company will demonstrate how the device is
implanted and how it works. Video footage of an actual implantation will
also be shown during the presentations.
Carina is not a hearing aid nor
a cochlear implant, this revolutionary technology is a fully implantable
middle ear prosthesis that completely bypasses the ear canal and eardrum,
overcoming the anatomical and physical limitations that prevent
conventional therapy from providing maximum hearing functionality.
This device has been implanted
in patients with severe hearing loss and has significantly improved the
quality of life for these individuals. Carina delivers a high fidelity
signal directly to the middle ear, providing improved function, comfort
and convenience over traditional hearing devices.
A hearing aid can restrict
activities for many people. It can prevent them from engaging in
activities like swimming, aerobics, tennis and even showering, because of
perspiration or other moisture. Carina is designed to help people enjoy
their favorite activities without any lifestyle restrictions.
~~~~~~~~~~~~~~~~~
December
2006
The
new device consists of a small sound processor that contains batteries
and has two wires attached. Surgeons insert the processor -- about the
size of a baby's hand -- beneath the skin behind the ear. Both wires are
threaded through skull bone to the middle ear, which is behind the
eardrum. The wire that senses sound vibrations entering the ear is
attached to the anvil, or the middle ear bone. The vibrations are
transformed into electrical signals and sent to the processor, which
refines the sound and sends it along the other wire to the stirrup --
the ear bone closest to the cochlea -- which the brain uses to interpret
sound. The device is for people with mild to severe hearing loss who are
not comfortable with external hearing aids. It does not work on people
who are deaf and is not for children. Full
Story
~~~~~~~~~~~~~~~~~
Otologics'
Carina systems, which are implanted under the skin, will be priced
between $12,000 and $15,000 each when they reach the American market in
2009. Implant surgery costs an additional $4,000 to $8,000 per system.
According to Bedoya, the Carina system offers convenience, comfort,
cosmetics and better sound quality than traditional hearing aids. The
implanted portion of the Carina is a capsule containing a microphone, a
digital signal processor and a rechargeable battery with a projected
20-year life. There is no external indication of its presence, a
significant advantage for those who believe that evidence of a hearing
impairment will detract from their image or professional effectiveness.
Full
Story
~~~~~~~~~~~~~~~~~
August 2007
Hearing aids help millions of people, but many resist
them because they think wearing one carries a social stigma. Hearing aids
also have serious lifestyle limitations: the hearing impaired can't wear
them while showering or swimming, and most models are hard to wear while
sleeping. Now, a new kind of hearing aid that aims to overcome these
problems is in clinical trials. It's invisible and waterproof because all
of its circuitry--including its battery and microphone-- is in the user's
head. Developed by Otologics, of Boulder, CO, the device picks up sound
with a microphone implanted underneath the skin behind the user's ear.
The signal is processed by electronics and sent to a tiny vibrating
piston implanted against the small bones in the middle ear. The bones
transmit the vibrations to the inner ear, which encodes them as nerve
impulses and sends the information to the brain.
Full Story
~~~~~~~~~~~~~~~~~
November 2007
In the past 10 years, improvements in hearing
devices have substantially helped feedback control, widening the frequency
range, and, to some degree, sound quality; however, patients still
experience the stigma and practical problems of using these devices.
Recognizing that stigma and sound quality will always be issues for those
that use traditional hearing instruments, research has pursued a quest to
find an efficient, practical method of middle ear implantation that would
counteract many of the difficulties of hearing aid use. [Ed. This is a
great, comprehensive article!]
Full Story
~~~~~~~~~~~~~~~~~
December 2007
A hearing aid is a straightforward device. Its
microphone collects sound, its electronics amplify it, its tiny
loudspeaker sends the sound into a tube placed in the ear canal, and the
power comes from a disposable battery. There's just one problem: people
hate hearing aids. They get lost. They're hard to wear while sleeping.
They mustn't get wet. They get chewed up by the dog. They're awkward
during sex. . . . . So far, no one's built a fully implantable cochlear
implant. But two fully implantable hearing aids are now in clinical trials
(that is to say, they are considered investigational by the U.S. Food and
Drug Administration and are not yet approved for commercial sale). One,
the Esteem, is built by Envoy Medical of St. Paul, MN. The other, from
Otologics of Boulder, CO, is called the Carina. Hopes are high that they
will be the first successful devices of their kind. Making such things is
a challenge. Where does the microphone go? How is the amplified sound sent
into the ear? What's the power source? And how can it be kept in the body
without leaking?
Full Story
~~~~~~~~~~~~~~~~~
Editor: We've been hearing about the Vibrant
Soundbridge implantable hearing aid for a few years now, and it looks like
it's ready for prime time. Here's the press release about the first
implantation!
~~~~~~~~~~~~~~~~~
January 2008
MED-EL Corporation announced today the first US implantation in the
clinical trial of the Vibrant Soundbridge® (VSB) as a treatment for
conductive and mixed hearing loss using direct round window cochlear
stimulation. The Vibrant Soundbridge is the first US Food and Drug
Administration (FDA) approved implantable middle-ear hearing device to
treat sensorineural hearing loss. Adults with conductive or mixed
hearing loss who have been unsuccessful with traditional amplification may
be candidates for the trial.
Today is the first day that the clinical trial opened in the United
States. The implantation was performed by Jennifer Maw, MD, founder of
Ear and Rehabilitative Services (EARS) Inc in San Jose, Calif.
“I am extremely enthusiastic about this new study,” says Dr. Maw. “This
procedure has the potential to revolutionize how ear surgeons treat
chronic ear disease and hearing loss. Eustachian tube dysfunction limits
the hearing results that patients can achieve with reconstructive ear
surgery, and there are no well-established treatments for this problem. As
this device can mimic the function of the middle ear, we can potentially
help a large category of patients who could not be previously considered
as suitable surgical candidates.”
~~~~~~~~~~~~~~~~~
May 2008
THE IDEA of putting a vibrator on one of little
bones in the middle ear began in Japan over 30 years ago. The
semi-implanted hearing aid was finally invented by a man named Geoff Ball,
who had hearing problems himself. Med-El purchased rights to the
invention, and has been manufacturing it for 10 years, since the first one
was implanted. Although part of it is inside the head, it is not a
cochlear implant - a surgically implanted electronic device that provides
a sense of sound to a person who is profoundly deaf. The cochlear implant
is often referred to as a "bionic ear" that - unlike hearing aids - does
not amplify sound. Instead, this implant, used by many hundreds of Israeli
children and now adults as well, works by electrically stimulating any
functioning auditory nerves inside the cochlea. On the exterior of the
head are a microphone, speech processor and transmitter that enable the
wearer to adjust the sound for quality and amplification.
Full Story
~~~~~~~~~~~~~~~~~
July 2008
A surgically implanted hearing aid that stays
under your skin is being put to the test in the Bay Area. It could
drastically change the way the hearing impaired lead their lives. A new,
invisible hearing aid being tested in the Bay Area could soon change
thousands of lives. David Steele is an avid swimmer and kayaker. But
there's something he can never forget when he hits the water -- taking out
his hearing aids. "If my hearing aids get wet, that's it, they're dead and
can't be fixed," said Steele. He says just the threat from his own sweat
forces him into a world of silence, during long runs with his fiance.
"Here I am, I am engaged to this wonderful woman and if we go swimming,
kayaking or running, I want to talk to her," said Steele. But now, a
clinical trial going on at the California Ear Institute in East Palo Alto
is attempting to break down that sound barrier for hearing impaired
athletes.
Full Story
~~~~~~~~~~~~~~~~~
August 2008
The last decade has seen
astonishing advances in the technology of hearing aids. A comparable
degree of technological innovation is now taking place in a related field:
implantable devices. In this context, an implantable hearing device is any
instrument that is entirely or partially implanted in the temporal bone or
the middle ear. Partially implanted devices include the boneanchored
hearing aid or Baha®, in which the
vibratory “receiver” is implanted in the temporal bone, just behind the
pinna. The Baha is especially useful for conductive and most mixed hearing
losses. There is also a range of middle ear implants in which the
“receiver” transducer is implanted on the ossicular chain. The greatest
change is taking place among fully implanted devices. Historically, these
were restricted to piezo-electric devices that used a very small
transducer. However, in the near future we will see electro-magnetic
devices that offer the benefits of being completely in the ear.
Full Story
~~~~~~~~~~~~~~~~~
September 2008
The Otologics MET Fully Implantable Ossicular
Stimulator (Figure 1) consists of three primary components: the implant
(Figure 2A), the remote control (Figure 2B), and the charger (Figure 2
C/D). The implant component of the system acts in conjunction with a
charger and remote control. It consists of a signal processing electronics
capsule, a pendant microphone system, the internal battery, and an
electromechanical transducer. Specifically, the electronics package
comprises two digital signal processors, control circuitry, battery, radio
frequency coil, and a magnet.
Full Story
~~~~~~~~~~~~~~~~~
March 2009
On Friday, a fully implantable hearing device is
scheduled to be surgically inserted into a patient's ear in an operation
at St. Luke's. It's believed to be the first operation of its kind in the
St. Louis area. The device includes a microphone, battery, processor and
magnet that are implanted under the skin behind the ear. The microphone
picks up sound, which is processed and sent to a mechanism that causes
the bones in the middle ear to vibrate. The vibrations reach the inner
ear which sends the information to the brain. Remote controls held next
to the head can control volume and charge the battery, which can last for
36 to 72 hours at a stretch. The implant, from Boulder, Colo.-based
Otologics, is intended for people with moderate to severe hearing loss.
Full Story
~~~~~~~~~~~~~~~~~
December 2009
An panel of ear, nose, and throat experts will
consider on Friday whether to recommend FDA approval of the first
fully-implantable hearing aid for patients with mild to severe hearing
loss. In a company-sponsored trial, all patients had improved hearing
after implantation with the Esteem hearing system, made by Envoy Medical
Corp. of St. Paul, Minn. But concerns have been raised about lingering
adverse affects, including sense of taste disturbances. Esteem is
fully-implantable in the middle ear, unlike other hearing aids, which are
only partially implantable. According to the company, Esteem works by
replicating the ossicular chain -- a group of three small bones known as
the hammer, anvil, and stirrup -- which amplify sound vibrations that
enter the middle ear.
Full Story
~~~~~~~~~~~~~~~~~
December 2009
Today at the Ear, Nose, and Throat Advisory
Committee of the FDA a meeting is under way to consider whether to
recommend approval of Envoy Medical's (St. Paul, Minn) fully implantable
hearing aid. The Esteem device uses a piezoelectric sensor to monitor the
eardrum and convert the signal into digital for processing. The processed
information is then converted back into physical vibrations and applied to
the stapes capitulum. MedPage Today is reporting that in a recent clinical
trial the device improved the hearing of a good number of subjects, but
almost half experienced some sort of adverse effects such as taste
disturbance and facial palsy.
Full Story
~~~~~~~~~~~~~~~~~
December 2009
A FDA advisory panel has unanimously recommended
that the agency approve the first fully-implantable hearing aid for
patients with moderate to severe hearing loss. By a 15-0 vote, the Ear,
Nose, and Throat Advisory Committee decided Friday that despite concerns
about lingering adverse effects -- including sense of taste disturbances
that can last longer than a year -- the Esteem hearing system, improves
hearing better than partially-implanted hearing aids. Esteem is
fully-implantable in the middle ear, unlike other hearing aids, which are
only partially implantable. The agency does not have to take the advice of
its scientific panels but usually does. In a company-sponsored trial, all
patients had improved hearing after implantation with the Esteem hearing
system, which is made by Envoy Medical Corp. of St. Paul, Minn. [snip]
Also of concern, 26 of the 57 patients continued to experience adverse
events beyond one year after surgery, including taste disturbance and
facial palsy. Because of that risk, the panel recommended the device's
label indicate the risk for facial nerve injury, taste disturbance, and a
statement that some patients are more satisfied with their hearing aids.
Full Story
~~~~~~~~~~~~~~~~~
October 2010
Thanks in large part to Limbaugh's plug on his
popular radio show, Envoy, based in White Bear Lake, Minnesota, recently
raised another $16.4 million, including $10 million from hearing aid
powerhouse Starkey Laboratories Inc. The latest financing round, which
closed at the end of September, takes Envoy's total take to $140 million.
In addition, Limbaugh's s millions of listeners have flooded Envoy's
website and phone lines, prompting the startup to hire more sales staff.
"It's been off the charts," CEO Patrick Spearman told MedCity News.
Limbaugh "is worth every penny." Not that Envoy necessarily needed more
buzz. Since the Food and Drug Administration approved its Esteem system,
the first fully implantable device to treat hearing loss in the United
States, the company has been busy.
Full Story
~~~~~~~~~~~~~~~~~
November 2010
This past summer, CBS 2HD reported on a remarkable
new hearing aid that's helping hearing-impaired people hear in a much more
natural way. A young woman with severe hearing loss saw our story and
decided to find out more about the newly approved implant. As Dr. Max
Gomez reports, there's something about her story that makes her very
unique. Lori Frisher had already had a cochlear implant in one ear trying
to restore her failing hearing, but then her other ear was also getting
worse and conventional hearing aids wern't working. So Lori became the
first to have two different implantable hearing-assist devices.
Full Story
~~~~~~~~~~~~~~~~~
February 2010
A woman has received the UK's first totally
implanted hearing aid. The Otologics "Carina" middle ear implant device
consists of a rechargeable battery, a signal processor and a microphone
which are all implanted under the skin. These are connected to a tiny
electromagnetic vibrator which is positioned inside the mastoid bone
behind the ear and attaches to the hearing bones. There is nothing on the
outside of the head and the ear canal is left open. Denise Westgate, 49,
from Havant in Hampshire received the aid thanks to work from the South of
England Cochlear Implant Centre (SOECIC), based at the University of
Southampton. In past aids, the microphone and battery were on the outside
of the patient, held in place over the implanted part of the device by a
magnet. This was prone to being knocked off or damaged or getting wet.
When the external part was removed at night or in the shower, the patient
could no longer hear.
Full Story
~~~~~~~~~~~~~~~~~
March 2011
Three decades after the introduction of the first
bone-anchored hearing aids, the available systems have improved
significantly and the field is expanding faster than ever. New
technologies such as digital signal processing have opened new avenues
unique to bone conduction hearing aids. Better insights into the
physiology of bone-conducted hearing have not only changed the field but
also provided ideas for new areas of application. In this volume of
Advances in Oto-Rhino-Laryngology, renowned researchers and experienced
clinicians from all over the world present the latest findings and
practices. Reviews on the theoretical background of bone conduction
hearing, presentation of currently available hearing aid systems, chapters
on monaural and binaural hearing with implantable bone conduction hearing
aids, a comparison with conventional hearing aids and a glimpse into the
future of implantable bone conduction hearing aids render this volume an
invaluable reference book to ENT surgeons, audiologists, hearing aid
acousticians and researchers alike.
Full Story
~~~~~~~~~~~~~~~~~
by Soli D. Sigfrid
March 2011
These implants can be further subdivided. In one
subcategory are middle-ear implants for sensorineural hearing loss, which
use different designs and differ primarily in the means by which they
deliver vibratory mechanical energy to the ossicular chain. However, they
all impart mechanical energy to the cochlea at the round window via motion
of the stapes (e.g., Fredrickson et al., 1995). The external portion of
these devices is similar to a cochlear implant (CI), consisting of a
microphone, speech processor, and radio frequency (RF) transmitter. The
implanted portion consists of an RF receiver, electronic components, and a
mechanical vibrator.
Full Story
~~~~~~~~~~~~~~~~~
April 2011
But now Oklahoma researcher Rong Gan has developed
a hearing device that . . . is invisible because it is totally implanted.
The device is designed for people with moderate to severe hearing loss,
and especially for elderly people, whose tiny sound-sensitive hairs inside
the ear have withered away. Nearly half of those 75 and older have hearing
loss. "Generally all people wearing hearing aids can benefit from this,"
Gan said. "There is nothing in the ear canal. Everything is under the
skin."
Full Story
~~~~~~~~~~~~~~~~~
October 2011
As a group of audiologists we felt that it was
impossible for a "deaf" person and some with mto derive that much benefit
from this device. Allowing for the "direct drive" effects of implantable
middle ear devices, the benefits of a natural signal sent to the eardrum
with appropriate resonance, and allowing for the possibility that the
patient was inadequately aided prior to the implant; this patient still
seems to have had an overreaction to the activation of the device. A
"deaf" person would not be able to hear that well with this device, if she
really had a 90 dB+ hearing loss prior to the implant. Although the video
offers some hope to those with hearing losses that can be fit with
implantable middle ear hearing devices, it also presents some implications
that border on ethical advertising, especially to the US market. As this
video went viral over the weekend the consumer blog at HHTM has had
inquiries from totally deaf individuals as to how they can obtain the same
device, hopefully to receive the same benefit as presented in the video (Hannan,
2011). When the truly deaf try this device and are unsuccessful it will
add "fuel to the fire" for discussions regarding the under delivery of
benefit from amplification and the arguments of further "medicalization"
of the "deaf by the deaf community.
Full
Story
~~~~~~~~~~~~~~~~~
October 2011
Sixteen days ago 29-year-old Sarah Churman posted
a video of herself hearing her voice loud and clear for the first time
after being implanted with Envoy Medical's Esteem device. The video went
viral, sales have spiked and Churman and Envoy have shared the spotlight
on The Today Show, Ellen DeGeneres, Fox and Friends, and CNN's Anderson
Cooper and Dr. Sanjay Gupta, among others. The story was also covered on
150 local television stations, and the media attention keeps coming: MSNBC
will be doing a story at Churman's house. Envoy already spends around $8
million to $10 million a year on radio advertising with announcers
including Rush Limbaugh, Glenn Beck, Sean Hannity, Laura Ingraham and
Michael Savage. Company CEO Patrick Spearman said as a result of the video
big-name celebrities have approached Envoy about getting the device.
Spearman thinks that development could lead to television appearances as
well as television advertising.
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