Understanding Inspire

A closer look at how Inspire works, what the surgery involves, what the research shows, and what life looks like after implantation.

By Ryan Nord, MD — Sleep Surgeon, VCU Health  ·  Last medically reviewed: May 2026

How I Explain Inspire to My Patients

Dr. Ryan Nord holds an Inspire pulse generator, the implantable device used in hypoglossal nerve stimulation therapy for obstructive sleep apnea.

Inspire is like a pacemaker for your breathing. It’s placed through two small incisions — one in your neck and one in your chest, both on the right side. Through the neck incision, we place a small stimulation cuff around the nerve that controls your tongue. We then tunnel a wire down to the chest, where it connects to the battery that powers the device.

The battery lasts about eleven years and never needs to be recharged. The surgery takes roughly an hour, and it’s outpatient — you go home the same day.

About a month later, once you’re fully healed, we activate the device in the office. You’re given a small remote and taught how to use it. At bedtime, you press a button to turn the device on. It pulses once to let you know it’s working, then delays about thirty minutes so you can fall asleep.

Once the therapy kicks in, Inspire senses your breathing with every breath and gently pulses your tongue forward to keep your airway open. This typically reduces sleep apnea by about 70%. You’ll come in about twice a year to have the device checked, and we’ll do a home sleep study three to four months after surgery to confirm everything is working well.

Ryan Nord, MD
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What’s Actually Being Implanted?

The current generation of Inspire (Inspire V) has just two components, all hidden beneath the skin.

Inspire V pulse generator next to a quarter for size comparison

What Does Recovery Look Like?

Most patients are surprised by how manageable the recovery is. The device stays off during the entire healing period — there's no rush.

RECOVERY TIMELINE 1 Surgery Day~1 hour, outpatientGo home same day 2 Days 1–3Most sorenessOTC pain meds enough 3 Weeks 1–2Feeling significantlybetter, light activity 4 Weeks 2–4Resume normal activityDevice stays OFF ON⚡ 1 MonthActivation Day!Device turned onRemote training Sleep study at 3–4 months confirms therapy is working

Am I a Candidate?

Candidacy depends on your sleep study results, airway anatomy, and what your insurance requires. Use the criteria below as a starting point — then check the coverage guide to see how they apply to you.

AM I A CANDIDATE
✓
Moderate—Severe OSA
AHI between 15 and 100 events per hour of sleep
✓
Unable to Use CPAP →
Can't tolerate the mask, pressure, or it doesn't work. See what counts as failing CPAP.
✓
BMI Requirements
FDA up to 40 · Medicare ≤ 35 · some commercial plans ≤ 32
✓
Low Central Apneas
Inspire treats obstructive events, not central ones
✓
Pass DISE Exam →
Airway anatomy checked while sedated before surgery. Learn how DISE works.
✓
Age 18+
FDA approved for adults 18 years and older

Insurance criteria vary by plan — deductibles, BMI cutoffs, and CPAP-trial requirements can all change what you qualify for.

See if you might qualify →

What the Data Shows

Inspire is one of the most studied surgical treatments for obstructive sleep apnea. The landmark STAR trial was published in the New England Journal of Medicine in 2014, with results sustained through four-plus years of follow-up.

WHAT THE DATA SHOWS — STAR TRIAL RESULTS 68%AHI ReductionApnea events perhour of sleep 85%Soft or No SnoringReported by bedpartners at 12 months 11 → 6Sleepiness ScoreNormalized daytimealertness (ESS) 4+Years SustainedNo loss of effectover long-term follow-up Apnea Events Per Hour (AHI) 3020100 29.3Before 8.912 Months -68% Bed Partner Snoring Report Before18%Loud snoring After85% soft or no snoring Soft / no snoringLoud snoring Partner leaving bedroom: 30% → 5% Source: STAR Trial, New England Journal of Medicine 2014 — results sustained through 4+ year follow-up

Apnea Reduction

Patients went from an average AHI of 29 down to about 9 at twelve months — a 68% reduction in the number of times the airway closes per hour of sleep. By three years, the average AHI had improved further to under 5.

Snoring

Before surgery, only 18% of bed partners reported soft or no snoring. After twelve months with Inspire, that jumped to 85%. The percentage of bed partners who had to leave the bedroom dropped from 30% down to 5%.

Daytime Sleepiness

Patients’ Epworth Sleepiness Scale scores dropped from 11 (abnormally sleepy) to 6 (normal range) — and stayed there through four years of follow-up.

Quality of Life

Functional quality-of-life scores normalized after surgery and remained stable long-term. 63% of patients reported a clinically meaningful improvement in daily functioning. Over 41,000 patients have been implanted worldwide.

How Inspire Compares to Traditional Sleep Surgery

Inspire doesn’t change your anatomy — it works with your anatomy. Unlike traditional tissue-removing surgeries, the therapy is adjustable and reversible.

INSPIRE VS. TRADITIONAL SLEEP SURGERY TRADITIONAL SURGERY (UPPP)Cuts and Restructures Tissue ApproachRemoves / rearranges tissue Success Rate~50% Reversible?No — permanent changes Adjustable?No Side EffectsPermanent swallowing,voice, and taste changes ReadmissionHigher complication rate INSPIRE THERAPYWorks With Your Anatomy ApproachStimulates existing nerve Success Rate68% Reversible?Yes — can be removed Adjustable?Yes — settings tuned over time Side EffectsTemporary soreness,much lower complication rate ReadmissionSignificantly lower

Living with Inspire

Once you’re up and running, the nightly routine is simple. Press a button at bedtime. Turn it off in the morning. That’s it.

LIVING WITH INSPIRE
Nightly Routine
Press the button on your remote at bedtime. Turn it off in the morning. That’s it.
Office Visits
About twice a year for a device check and settings tune-up. We review your usage data and adjust as needed.
Battery Life
Lasts approximately 11 years. No recharging needed. Quick outpatient swap when it runs low.
Inspire is MR conditional — patients with current-generation devices can undergo full-body MRI at 1.5T and 3T under specific scan conditions (coil type, positioning, and parameters). You’ll receive an Inspire patient ID card to show your radiologist before any MRI.

This page is for educational purposes only and does not constitute medical advice. Individual results may vary. Clinical data referenced from the Inspire STAR Trial (Strollo et al., N Engl J Med, 2014) and the ADHERE post-approval registry. Inspire is an FDA-approved device for the treatment of moderate to severe obstructive sleep apnea in patients who meet specific eligibility criteria. Always consult with your physician to determine the best treatment option for your individual needs.

References

Selected primary sources and trial data on hypoglossal nerve stimulation for obstructive sleep apnea. Citations are provided for educational reference; this page summarizes published evidence and is not a substitute for a clinical evaluation.

STAR Trial (Strollo PJ Jr et al., NEJM 2014)

The pivotal trial that led to FDA approval of Inspire upper-airway stimulation. At 12 months, the apnea–hypopnea index fell 68% and oxygen desaturation events fell 70%, with sustained improvements in daytime sleepiness and quality of life.

N Engl J Med. 2014;370(2):139–149. doi:10.1056/NEJMoa1308659

STAR Five-Year Follow-Up (Woodson BT et al., Otolaryngol Head Neck Surg 2018)

Long-term outcomes confirmed durability: AHI reduction, oxygenation, and daytime sleepiness improvements were maintained at five years, with sustained patient satisfaction and quality-of-life gains.

Otolaryngol Head Neck Surg. 2018;159(1):194–202. doi:10.1177/0194599818762383

ADHERE Registry (Heiser C et al., Eur Respir J 2019; Mehra R et al., Otolaryngol Head Neck Surg 2020)

Real-world post-market data from thousands of implanted patients across multiple centers. Outcomes in the registry closely mirror the trial: roughly two-thirds of patients achieve clinically meaningful AHI reduction, with high satisfaction and low complication rates.

FDA Approval & Labeling

FDA-approved indications, BMI cutoffs, and anatomic criteria define formal candidacy. The labeling reflects the populations studied in STAR and subsequent submissions and is what U.S. surgeons use to determine eligibility.

DISE for Implant Candidacy (Kezirian EJ et al., Eur Arch Otorhinolaryngol 2011 — VOTE classification)

Drug-induced sleep endoscopy with the VOTE (Velum, Oropharynx, Tongue base, Epiglottis) classification is the standard pre-operative assessment for identifying complete concentric palatal collapse — the main contraindication to Inspire.

Eur Arch Otorhinolaryngol. 2011;268(8):1233–1236. doi:10.1007/s00405-011-1633-8

Common questions about Inspire

What is the Inspire implant, and how does it work?

Inspire is a small implant that gently stimulates the nerve controlling your tongue (the hypoglossal nerve) during sleep. When the device senses you breathing in, it sends a mild signal that moves the tongue slightly forward, keeping the airway open. You turn it on at bedtime with a small remote and off in the morning. It works without a mask, hose, or machine.

Who qualifies for an Inspire implant?

FDA-approved candidates have moderate-to-severe obstructive sleep apnea, have tried and not tolerated CPAP, fall within the labeled BMI range, and have an airway pattern on drug-induced sleep endoscopy (DISE) that suggests Inspire will work. Candidacy is confirmed in consultation with a sleep surgeon after a sleep study and DISE.

How long is recovery after Inspire surgery?

Most patients go home the same day. Soreness around the neck and chest incisions is typical for one to two weeks and usually managed with over-the-counter pain medication. Most people return to desk work within a few days and resume normal activity within three weeks. The device itself is not turned on until about a month after surgery, once the incisions are fully healed.

Can I feel the Inspire implant at night?

Most patients describe the stimulation as a mild, tingling sensation that fades into the background within a few nights. You can adjust the strength yourself with the remote, and a built-in pause delay lets you fall asleep before stimulation starts. The implant under the skin is rarely noticeable once healing is complete.

Can I have an MRI with Inspire?

Inspire is approved as “MR-conditional,” meaning MRIs can be performed safely under specific conditions (coil type, body region, and parameters). You’ll receive an Inspire patient ID card to show your radiologist before any MRI. Always confirm with your radiology team and your sleep surgeon’s office in advance.

How long does the Inspire battery last?

The internal battery lasts roughly eleven years on average and does not need to be recharged. When it runs low, the generator is replaced in a brief outpatient procedure — much smaller than the original surgery.

When is Inspire not the right choice?

Inspire isn’t a fit for everyone. Patients with complete concentric collapse at the soft palate on DISE, a BMI above the FDA-labeled cutoff, predominantly central (rather than obstructive) apnea, or anatomy that doesn’t match the device’s mechanism may be better served by other treatments — including continued CPAP optimization, weight management, alternative implants, or different surgical procedures. Honest evaluation of these factors is part of the consultation.