Lyla Lindsey
Cochlear implants are a novel technology that provides the sensation of sound to the profoundly deaf. In Australia, about 14,000 people have cochlear implants, and the country has played a significant role in the development and application of this technology. The Nucleus 22-channel cochlear implant is the current market leader, and the number of people with cochlear implants is expected to increase, driving further demand for audiology and support services.
| Characteristics | Values |
|---|---|
| Number of Australians with cochlear implants | 14,000 |
| Number of Australians with profound deafness | 11,400-13,400 |
| Number of children with profound deafness | 1,400 |
| Number of adults with profound deafness | 10,000-12,000 |
| Number of candidates for implantation | 2,570 |
| Number of adults who are candidates for implantation | 2,000 |
| Number of children who are candidates for implantation | 570 |
| Number of implantation procedures conducted in Australia | 300+ |
| Number of implantation procedures conducted worldwide | 5,000-6,000 |
| Number of Australians projected to be affected by hearing loss by 2060 | 7.8 million |
| Number of funding options for cochlear implants in Australia | Several |
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What You'll Learn
Cochlear implants help treat severe and profound hearing loss
Cochlear implants are a small, complex electronic device that helps provide a sense of sound to people who are profoundly deaf or severely hard of hearing. It is estimated that profound deafness affects 10,000-12,000 adults and 1,400 children in Australia, with a pool of approximately 2,000 adults and 570 children who are candidates for implantation.
The cochlear implant consists of two parts: an external portion that sits behind the ear and a second portion that is surgically placed under the skin. The external portion includes a microphone, which picks up sound from the environment, and a speech processor, which selects and arranges these sounds. The internal portion includes a transmitter and receiver/stimulator, which receive signals from the speech processor and convert them into electric impulses, and an electrode array, which collects the impulses from the stimulator and sends them to different regions of the auditory nerve. This allows the implant to create a new pathway for sounds to reach the brain, bypassing the damaged parts of the ear.
Cochlear implants do not restore normal hearing but can give a representation of sounds in the environment, helping the user to understand speech. They are particularly beneficial for children who are exposed to sounds at a young age during an optimal period for developing speech and language skills. Adults who have lost their hearing later in life can also benefit from cochlear implants, as they learn to associate the signals from the implant with sounds they remember, including speech.
The benefits of cochlear implants far outweigh the risks, and they can significantly improve the quality of life for people with severe or profound hearing loss. However, it is important to note that the decision to receive an implant should involve discussions with medical specialists, as the process can be expensive and carries a small risk of complications.
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Surgery complications occur in about 5% of cases
In Australia, surgery complications occur in approximately 5% of cochlear implant cases. This equates to around 15 cases, based on the figure of over 300 implantation procedures conducted in the country.
The most common surgical complication is infection or necrosis of the skin flap covering the receiver/stimulator module. Some trauma can also occur during the insertion of the electrode array. While continued electrical stimulation does not deplete the number of ganglion cells, there are other potential complications that patients should be aware of.
One possible complication is injury to the facial nerve, which passes through the middle ear and controls facial muscle movement. Damage to this nerve can cause temporary or permanent weakness or full paralysis on the same side of the face as the implant. Meningitis, a rare but serious infection of the brain's lining, is another possible complication, particularly for those with abnormally formed inner ear structures.
Additionally, cerebrospinal fluid leakage can occur if a hole is created in the inner ear or the covering of the brain during surgery. Perilymph fluid, found in the inner ear or cochlea, may also leak. Taste disturbances are another possible complication, as the nerve that provides taste sensation to the tongue passes through the middle ear and may be injured during the procedure.
It is important to note that the long-term effects of cochlear implants are still being studied, and there may be unforeseen complications that arise with extended implantation.
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Uptake rates are low among adults due to surgery concerns
Cochlear implants are suitable for both children and adults with sensorineural hearing loss. This condition arises when the inner ear, or cochlea, is damaged or malfunctioning. In Australia, about 14,000 people have cochlear implants.
However, uptake rates are low among adults, and this is largely due to concerns about surgery. Hearing loss affects a significant number of adults over 50, and while hearing aids can provide support, cochlear implants are often the best solution when clarity is an issue. Despite the benefits, many adults are reluctant to undergo the procedure due to concerns about surgical complications and the potential loss of residual hearing.
In Australia, an overall complication rate of approximately 5% has been observed following cochlear implant surgery. The most common issue is infection or necrosis of the skin flap covering the receiver/stimulator module. There is also some risk of trauma during the insertion of the electrode array. These potential complications can deter adults from opting for cochlear implants, even when their hearing loss negatively impacts their lives.
Furthermore, the selection criteria for cochlear implant surgery are stringent. Radiological examinations exclude about 30% of potential candidates, and there are ongoing refinements in radiology techniques and disease understanding that may impact the timing and suitability of surgery. This means that even adults who are struggling with hearing loss may not qualify for cochlear implants, contributing to the low uptake rates.
To improve uptake rates among adults, it is essential to address their concerns about surgery. Providing comprehensive information about the risks and benefits of the procedure, as well as access to support and rehabilitation services, can help alleviate fears and empower individuals to make informed decisions about their hearing healthcare.
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There are several funding models to cover the costs
Cochlear implants have become established over the years as a novel technology for providing the sensation of sound to the profoundly deaf. Australia has played a major role in the development and application of this technology.
Profound deafness affects approximately 10,000 to 12,000 adults and 1,400 children in Australia. From this population, there is a pool of approximately 2,000 adults and 570 children who are candidates for implantation.
Secondly, private health insurance is another option for covering the costs of cochlear implants. Gold, Silver, and some Bronze private hospital policies typically cover the cost of Cochlear Nucleus, Baha, and Osia implant systems. Private hospital policies may also cover the cost of private hospital fees and future sound processor upgrades. It is important to contact your health fund directly to ask about your coverage level for cochlear implant devices as well as associated surgical and hospital costs.
Thirdly, veterans who meet eligibility criteria can also access funding for cochlear implant surgery and devices through the Department of Veterans Affairs (DVA). Australians with a Veterans Gold Card typically receive funding for the latest Cochlear Nucleus, Baha, and Osia implant systems.
Finally, self-funding is also an option. It is recommended to discuss the cost of the cochlear implant system and related surgical, post-operative, and ongoing care beforehand with your local medical professionals.
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About 14,000 Australians have a cochlear implant
Cochlear implants are an effective treatment for individuals with severe and profound hearing loss, improving their speech understanding and quality of life. About 14,000 Australians have a cochlear implant. This number is expected to increase as the technology continues to develop rapidly.
Hearing loss affects many aspects of life, such as listening in noisy environments, hearing soft sounds, social engagement, education, and employment. By 2060, approximately 7.8 million Australians are predicted to experience hearing loss. While hearing aids can be a solution for many, they only amplify sounds and do not address clarity issues. Cochlear implants, on the other hand, directly stimulate the auditory nerve, providing a solution for those with degenerative hearing loss that cannot be managed by hearing aids or is severely impacting their lives.
In Australia, the Cochlear Nucleus implant system is a market leader in the treatment of moderate to severe hearing loss. The Baha bone conduction implant system is also used for moderate to severe hearing loss, while the Cochlear Osia System is intended for patients with conductive, mixed hearing loss, and single-sided sensorineural deafness in those aged 10 years and above.
The selection criteria for cochlear implants include factors such as the severity of hearing loss and the patient's suitability for surgery. Radiological examinations play a crucial role in determining eligibility, excluding about 30% of potential candidates. The surgery has an overall complication rate of approximately 5% in Australia, with infection or necrosis of the skin flap being the most common issue.
Several funding options are available for Australians requiring cochlear implants, including private health insurance, government-funded programs, and support for veterans who meet specific criteria.
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Frequently asked questions
About 14,000 Australians have a cochlear implant.
Cochlear implants directly stimulate the auditory nerve and are an effective treatment for severe and profound hearing loss, restoring speech understanding to a large degree and improving quality of life.
Several funding models cover the costs of a cochlear implant and surgery in Australia. Depending on your level of cover, private health insurance is one option. Veterans who meet eligibility criteria can also access funding. Australians of all ages can access government-funded Public Cochlear Implant Programs, which typically fund eligible patients.
