If you have obstructive sleep apnea (OSA) and haven’t found relief with CPAP, you might have heard about hypoglossal nerve stimulation from your doctor or in the news. This FDA-approved therapy works with your natural breathing to keep your airway open while you sleep. There’s no mask, no hose, and no machine by your bed.
I’m Dr. Jordan Weiner, a sleep surgeon in Scottsdale, Arizona. In my practice, I’ve seen hypoglossal nerve stimulation change the lives of patients who felt out of options. In this article, I’ll explain how this therapy works, how the devices differ, and whether it could be right for you.
What Is Hypoglossal Nerve Stimulation?
The hypoglossal nerve controls how your tongue moves. When you sleep, your muscles relax and your tongue can fall back, blocking your airway. This is a common cause of obstructive sleep apnea.
Hypoglossal nerve stimulation devices send gentle electrical pulses to this nerve while you sleep. These pulses keep your tongue forward, stopping it from blocking your airway. The device works in sync with your breathing and only turns on when needed.
There are currently two FDA-approved hypoglossal nerve stimulation systems available in the United States: Inspire therapy and the Nyxoah Genio system. Both target the same nerve, but they work in different ways.
How Hypoglossal Nerve Stimulation Works: Inspire Therapy
Inspire therapy uses two components implanted during outpatient surgery. A small generator is placed under the skin in your upper chest, much like a pacemaker. The new Gen V generator also has the ability to detect chest movement to sense when you breathe in. A stimulation lead connects to your right hypoglossal nerve under your jaw.
At bedtime, you turn on the device with a small remote. While you sleep, the breathing sensor tracks each breath. Just before you inhale, the generator sends a gentle pulse to your hypoglossal nerve, moving your tongue forward to keep your airway open.
The stimulation is gentle, and most patients don’t notice it once they’re asleep. During the first few months, we adjust the settings to find what works best for you.
I have performed nearly 600 Inspire procedures with a 95% success rate, placing me among the top Inspire surgeons in the country. I’ve seen this therapy help patients who thought they would never sleep well again.
The Nyxoah Genio System: A Different Approach to Hypoglossal Nerve Stimulation
The Genio system uses a simpler approach. Instead of two parts, Genio has a single small implant containing a receiver and two stimulating electrodes implanted under your chin. This creates stimulation of both left and right hypoglossal nerves. An external chip holds both the battery and the stimulation transmitter.
The chip is worn at night by placing it under the chin using a disposable adhesive patch. When you put the patch on before bed, it activates the implant. The chip then sends stimulation to both branches of your hypoglossal nerve all night.
Since Genio doesn’t use a chest generator or breathing sensor, the surgery involves fewer implanted components.. The procedure takes about 45 minutes under general anesthesia. The battery with the chip is charged during the day on a charging stand.
Comparing Hypoglossal Nerve Stimulation Devices: Inspire vs. Genio
Both systems stimulate your hypoglossal nerve to keep your airway open and both require surgery. They both remove the need for CPAP, but there are some notable differences.
Implant Components
Inspire has two separate implanted components connected by wires under your skin. Genio involves just one component implanted under your chin, with no wires inside your body.
Activation Method
With Inspire, you use a handheld remote to turn the device on and off. Genio turns on automatically when you put the adhesive patch on your chin and turns off when the patch is removed in the morning. It can be paused as needed during the night with the companion app.
Stimulation Pattern
Inspire sends stimulation to one nerve to the tongue (usually the right side), timed with your breathing. Genio stimulates both sides of the nerve in a preset pattern not synchronized with breathing.
Battery
Inspire’s battery usually needs to be replaced after 10 to 12 years with a minor surgical procedure. Genio’s battery recharges each day on a charging stand.
FDA Approval Time
Inspire was approved by the FDA in 2014 and has the longest track record in the United States. Genio received FDA approval in August 2025 and represents newer technology in this space.
Who Is a Candidate for Hypoglossal Nerve Stimulation?
Not everyone with sleep apnea qualifies for hypoglossal nerve stimulation. We need to check a few things before moving forward.
You need to have moderate to severe obstructive sleep apnea, usually with an Apnea-Hypopnea Index between 15 and 65 events per hour. Your BMI should be 35 or less, but some people outside this range may still qualify.
You must have tried CPAP and found it difficult to use. Insurance companies need proof that you tried CPAP and couldn’t tolerate it before they approve hypoglossal nerve stimulation.
Your airway anatomy is important. We do a drug-induced sleep endoscopy to see exactly how and where your airway collapses. If you have a complete concentric collapse at the palate, hypoglossal nerve stimulation may not work well. Other patterns of obstruction do qualify.
You can’t have central sleep apnea as your main diagnosis. These devices are for obstructive sleep apnea, where your airway is blocked. They don’t help with central sleep apnea, which happens when your brain doesn’t signal your body to breathe.
What to Expect: The Evaluation Process
When you visit my Scottsdale, Arizona office to consider hypoglossal nerve stimulation, we begin with a full evaluation. I review your sleep study, talk about your CPAP experience, check your airway, and go over your health history.
If you look like a good candidate after the first assessment, we do a drug-induced sleep endoscopy. This is done in our surgical center with light sedation. I use a small camera to watch your airway while you’re in a sleep-like state, so I can see exactly where and how it collapses.
This information helps us decide if you’re a good candidate for hypoglossal nerve stimulation therapy or if other surgeries may be more appropriate.
The Surgical Procedure for Hypoglossal Nerve Stimulation
Both Inspire and Genio are implanted during outpatient surgery with general anesthesia. Most people go home the same day.
For Inspire, I make small incisions under your jaw, in your neck, and in your upper chest. The surgery takes about half an hour. You’ll have two small scars that fade with time.
For Genio, I make one incision under your chin to place the electrodes. The procedure takes about 45 minutes. You’ll have a small scar under your chin.
Recovery is usually simple. Most people take a few days off work. You may have some swelling and discomfort, but pain medicine can help. We turn on the Inspire device about a month after surgery and the Genio device about two months after surgery to let you heal first.
Life After Hypoglossal Nerve Stimulation Implantation
After we activate your device, we begin a titration period. This means we slowly adjust the settings to find what works best for you, based on how you feel and your follow-up sleep study results.
Most people notice improvement in the first few weeks. Your sleep gets better, you feel less sleepy during the day, and your bed partner may notice your snoring has stopped or is much less.
You’ll need regular follow-up visits to make sure everything is working well. For Inspire, this includes replacing the battery eventually. For Genio, you’ll get new adhesive patches every month.
Both devices fit into your life much more easily than CPAP. There’s no equipment to clean, no need to worry about power outlets when you travel, and no mask to cause claustrophobia. You just turn on the device or put on the patch and go to sleep.
Hypoglossal Nerve Stimulation Success Rates and Research
Clinical trials for both systems show big improvements in sleep apnea and quality of life. Inspire has long-term data showing benefits over many years. Genio’s studies show similar results in the short term, with the added benefit of a smaller surgery.
Results can vary depending on your anatomy, how severe your apnea is, and how well we adjust your settings. That’s why the evaluation process is so important. I want to make sure you’re a good candidate before we move forward.
Making the Decision Between Hypoglossal Nerve Stimulation Devices
Choosing between Inspire and Genio depends on a few things: your anatomy, how you want to activate the device, your thoughts on the surgery, and sometimes differences in insurance coverage.
I’ll walk you through these choices honestly. My goal isn’t to push you toward one device. I want to help you understand which option fits your needs best.
Some people prefer the simplicity of having just one implant instead of two. Others like not having to wear anything when they go to sleep instead of using an adhesive patch for the external stimulator. Some people don’t want a device exchange in 10-12 years. Both choices are valid.
Why Choose a Specialized Sleep Surgeon for Hypoglossal Nerve Stimulation
Implanting a hypoglossal nerve stimulator needs surgical skill. The area around your hypoglossal nerve is delicate, and placing the device correctly is key to getting the best results.
My practice is dedicated to sleep apnea surgery, so I have a lot of experience with these procedures. I know how to choose the right candidates and get the best results.
If you’re thinking about surgery for sleep apnea, you want a surgeon with lots of experience, who keeps up with the latest research, and who will be honest about whether you’re a good candidate.
Frequently Asked Questions About Hypoglossal Nerve Stimulation
How long does a hypoglossal nerve stimulator last?
These devices are made to last. Inspire’s battery usually needs to be replaced after 10 to 12 years. Genio’s battery recharges daily and doesn’t need to be replaced via surgery.
Does hypoglossal nerve stimulation hurt?
Most people don’t feel the stimulation once they’re asleep. During the first adjustment period, you might notice some sensation as we find the right settings, but it’s usually mild.
Will insurance cover hypoglossal nerve stimulation?
Most insurance plans cover both Inspire and Genio if you meet the requirements and have tried CPAP without success. We help you with insurance checks and approval.
Can I have an MRI with hypoglossal nerve stimulation devices?
Both systems are MRI compatible, but with some restrictions. With Inspire, an MRI up to 1.5 T is allowed. For Genio, up to 3.0 T is allowed. Your doctor should know about your implant before you get an MRI.
What happens if hypoglossal nerve stimulation doesn’t work?
If one device doesn’t help enough, there are other options. Some people do better with combination therapy or additional surgery.
Beyond CPAP: The Future of Sleep Apnea Treatment
For a long time, CPAP was the only good treatment for moderate to severe obstructive sleep apnea. If you couldn’t tolerate or use it, you had to choose between poor sleep and serious health risks.
Hypoglossal nerve stimulation changed that. These devices give real relief to the right patients. They aren’t experimental; they’re FDA-approved, covered by insurance, and have years of proven results.
If you’re unhappy with your results from CPAP and are looking for other options, you have choices. Schedule a consultation, and we’ll see if hypoglossal nerve stimulation could help you.
Your sleep and health are important. You deserve a treatment that really works for your specific needs. Hypoglossal nerve stimulation could be that treatment.
Disclaimer: This content is for educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. Individual results vary based on anatomy, severity of sleep apnea, and other health factors. Hypoglossal nerve stimulation may not be suitable for all patients. Schedule a consultation with a qualified sleep surgeon to determine if you are a candidate for this therapy.