Is 25, 30 or 40 Too Old for a Vacuum Bell?

No. Ages 25, 30 and 40 are not too old. The pioneer cohort behind this therapy included patients up to 61, and a device model is fitted for adult patients (Haecker 2016). The trade-off is real: adults respond more slowly and less completely than young children, and the outcome data favours an early start.

Key points

  • The pioneer cohort behind the modern device treated patients from age 2 to 61 and used a model fitted for adolescent and adult female patients (Haecker 2016, about 450 patients).
  • Adults are a recognised indication. A female-fitted model exists and the therapy is offered to patients who decline surgery (Loufopoulos et al. 2021, 13-study review).
  • Age is the strongest influence on the outcome. Younger cartilage is more pliable, so adolescents typically respond faster and more completely than adults.
  • Consistency matters as much as age. Sustained daily use over months, rather than weeks, is the dominant factor in the result. For an adult that means a longer timeline, not a closed door.
  • Costal cartilage stiffens with age. A therapy that works by sustained gentle deformation depends on chest wall pliability, which is greater in children and declines through adulthood.
  • Responders exist across adult cohorts. The engineer who developed the modern device corrected his own adult chest over roughly two and a half years of daily use (Klobe).

The short answer, expanded

An age of 25, 30 or 40 does not put you outside the population this device was designed for. The cohort that established the modern protocol ran from age 2 to 61 and included a model shaped for adult and adolescent female chests (Haecker 2016). A 13-study review lists a female-fitted model alongside the standard diameters and names patients who decline surgery as an accepted indication (Loufopoulos et al. 2021). So the honest answer to the age question is not a cut-off. It is a curve.

That curve slopes against you as you get older. The mechanism is physical. A vacuum bell works by lifting the sternum and the attached rib cartilage under sustained gentle suction, and that lift only becomes permanent if the cartilage remodels while it is held. Cartilage is more pliable in childhood and stiffens through adolescence and adulthood. An adult chest is therefore a harder target, and the published predictors reflect exactly that. Adults are treated, adults respond, but they respond more slowly and less completely, and the case for a proper assessment now rather than next year is stronger, not weaker.

What the evidence actually shows

Two things are true at once in this literature, and holding both is the whole answer to the age question.

Adults are inside the treated population. Haecker (2016) reported a cohort of about 450 patients aged 2 to 61, treated on a protocol of a minimum of 30 minutes twice daily rising to several hours daily, with three device sizes plus a model fitted for adolescent and adult female patients. Loufopoulos and colleagues (2021), reviewing 13 studies, describe the same female-fitted model and list two adult-relevant indications: mild-to-moderate deformity, and patients who decline surgery. The clearest single example of an adult responder is the device's own origin. The engineer who developed it had pectus excavatum himself and corrected his own adult chest over roughly two and a half years of daily use (Klobe).

The odds still favour starting young. Two things separate the people who respond from the people who do not. Younger cartilage is more pliable, so adolescents typically respond faster and more completely than adults. And consistency of daily use over months, rather than weeks, is the dominant factor in the result. The published cohorts report overall rates rather than a separate figure for adults: a Swiss cohort at University Hospital Basel reported significant improvement in about 80% of 140 patients, and Scaife and colleagues (2025, n=240) reported a successful outcome in 66%. None of them breaks the result out by adult age band, so anyone quoting an adult success percentage is inventing one.

The pattern repeats in the youngest patients, from the opposite direction. Luo and colleagues (2022, n=139) studied preschool children with a mean age of 4.6 years and found that shallower initial depth and longer treatment both predicted complete correction. Cincinnati Children's Hospital states the therapy may remove the need for surgery in up to 35% of patients who use it, with the strongest results in children aged 6 to 12 with a mild deformity. Both references locate the peak of the response curve in childhood, which is another way of saying the adult sits further down it.

One more finding matters more for adults than for children. Zhou and colleagues (2024, n=65) found that 60% of children paused use for more than two weeks at least once, and consistency was the variable that most separated results. An adult chest needs a longer, not shorter, run of consistent use to remodel, so the adherence problem that limits children limits adults more. After 20 years of clinical application, Haecker and colleagues (2024) note plainly that no validated guidelines for the therapy exist, and that under age 10 it appears to represent a reasonable first step. They do not set an upper age limit, and neither does the device labelling.

Who this works best for

Among adults, the candidates who do best share features you can check before you start.

  • A flexible chest wall. If the sternum visibly lifts when suction is applied, the mechanical precondition is met. This is the single most useful thing an adult can assess.
  • Shallow to moderate depth. Shallower deformities corrected more completely in the outcome data (Luo et al. 2022).
  • Willing to run a long, consistent course. Sustained daily use over months is the dominant factor in the outcome. For an adult, plan in years.
  • A younger adult rather than an older one. Cartilage stiffens with each decade, so 25 is a better starting position than 40, though 40 is not excluded.
  • Someone who has declined or wants to avoid surgery. Formally an accepted indication (Loufopoulos et al. 2021), and the reasonable alternative to doing nothing.

Who this does not work for

This section matters more than the one above it, because the adult population contains more poor targets than the child population does. A rigid chest wall is the first disqualifier. If the sternum does not visibly lift under suction, the cartilage has likely stiffened past the point where sustained deformation moves it, and time will not change that. A deep, long-standing, ossified deformity in an adult is usually a surgical conversation rather than a vacuum bell one, and the honest advice in that case is to have the surgical conversation. The therapy also does not work for anyone who will not use it daily for years, and adults with jobs and families routinely underestimate that commitment; the largest single failure mode in the whole literature is stopping, not the device. It does not work for a protruding sternum, which is pectus carinatum, the opposite deformity, and needs compression rather than suction. Finally, cardiac conditions, bleeding or clotting disorders, vascular disease, skeletal disorders of the chest wall and active skin disease over the treatment area are contraindications that need clinical clearance before any purchase decision, not after.

Not sure whether this applies to you?

The two questions this article cannot answer for you are whether your own chest is a reasonable candidate, and which device size fits it. Both depend on measurements only you can take.

The FormaChest assessment takes about four minutes. It screens your situation against the variables the research identifies as predictive (age, depth of the indentation, chest flexibility and symptoms) and returns an honest read on whether conservative treatment is a reasonable first step. That includes telling you when the answer is to see a surgeon first, which it does for roughly the situations described in the section above.

It also returns a vacuum bell size recommendation based on your own measurements, at no cost.

Sizing is normally not free or simple in this category. The usual process is to email photographs of your bare chest to a company and wait for a reply, or to print paper templates and tape them to yourself, with the manufacturer warning that self-measurement may produce the wrong model. The assessment asks for numbers you can take alone with a ruler. No photographs, no email exchange, no deposit.

Take the free assessment →

What the research does not tell us

Presenting this literature as settled would misrepresent it, and the gaps land hardest on the exact question an adult is asking. First, there is no adult-specific success rate. The cohorts are dominated by children, the outcome study reports predictors rather than an age-banded response table, and no paper in the Evidence Bank gives a percentage for adults starting at 25, 30 or 40. Any such figure would be fabricated. Second, there are no randomised controlled trials of the therapy at any age; every study cited here is retrospective, observational or survey-based. Third, no validated guidelines exist, so session length, suction pressure and total duration vary between centres, and reported figures come from different regimens (Haecker et al. 2024). Fourth, the cohorts are enriched for motivated, supported patients, which likely inflates apparent efficacy relative to a real-world adult starting alone. Fifth, long-term durability data beyond fifteen years is weak, so whether an adult correction holds across later decades is not established. These gaps do not argue against trying. They argue for measuring your own response honestly over a defined trial and deciding from your own data.

What this means in practice

Three things follow from the evidence for an adult weighing this up.

Test the precondition before you commit. Whether your sternum lifts under suction, and how deep the deformity is, decide more than your age does. An adult with a flexible, moderately deep chest has a materially better outlook than an adult of the same age with a rigid, deep one.

Plan for a long, consistent course and protect it. The adult timeline is measured in years, and consistency is the variable that fails. Haje and colleagues (2021, n=115) found that structured support and consistency prompts raised adherence from 58% to 83%, so whatever keeps you using the device daily is acting directly on the strongest thing you control.

The cost asymmetry is part of the decision. Surgical repair in the United States commonly runs 40,000 to 70,000 dollars, with uninsured cases reported up to 100,000, and involves a bar in the chest for two to three years plus a second operation to remove it. The market-leading vacuum bell sells at 465 to 495 dollars for the device alone. A complete correction system costs a few hundred dollars and can be stopped at any time. That asymmetry does not make conservative treatment the right answer for every adult, but it means a six-month trial carries a very different downside to a surgical decision, and for an adult that trial is a legitimate first step where the chest is flexible.

About this guide

This article is published by FormaChest, a European manufacturer of vacuum bell correction systems, registered in Romania as AUGUMENTUM SRL. We make the device described above, and every figure quoted is cited to its source so you can verify it independently.

The adherence problem described in this article is the reason FormaChest ships the bell, brace and gel together rather than a device alone, alongside post-session skin care, the written protocol, and scheduled follow-up. Every competitor in this category sells the device by itself. Bought as a set the price is $461.40 in the men's line and $491.40 in the women's line, covering the correctly sized vacuum bell, the Chest Support Brace, post-session skin care, the written protocol and scheduled follow-up. See what is included →

Tomas Titus is the founder of FormaChest (AUGUMENTUM SRL, Craiova, Romania). He had pectus excavatum and corrected it without surgery, documenting his own vacuum bell treatment on camera, taking each measurement before a session rather than after. His chest depth went from 25mm to 4mm. That is one person's result at 19; published adult timelines run 12 to 24 months and results vary. He is not a clinician, and nothing in this article is a substitute for assessment by one.

Related questions

References

  1. Scaife ER, et al. Vacuum bell therapy for pectus excavatum. 2025. n=240
  2. Haecker FM. Vacuum bell therapy. Annals of Cardiothoracic Surgery. 2016;5(5):440-449. PMID 27747177
  3. Haecker FM, et al. 20 years clinical application of the vacuum bell for conservative treatment of pectus excavatum. Journal of Thoracic Disease. 2024. PMID 39268139
  4. Loufopoulos I, Karagiannidis IG, Lampridis S, Mitsos S, Panagiotopoulos N. Vacuum Bell: Is It a Useful Innovative Device for Pectus Excavatum Correction? Turkish Thoracic Journal. 2021;22(3):251-256. PMID 35110237
  5. Luo D, Cheng K, Yuan M, Xu C, He T. Efficacy and determinants of vacuum bell treatment in preschool children with pectus excavatum. Frontiers in Pediatrics. 2022. PMID 36313864
  6. Zhou L, Deng F, Tian Y, et al. Questionnaire-based subjective evaluation of the vacuum bell in children with pectus excavatum. Frontiers in Pediatrics. 2024. DOI 10.3389/fped.2024.1467215
  7. Haje SA, et al. Adherence in conservative treatment of pectus deformities. 2021. n=115
  8. Cincinnati Children's Hospital Medical Center. Vacuum bell therapy for pectus excavatum. Patient education resource.

Disclaimer

This article is for information only and is not medical advice. Pectus excavatum should be diagnosed and assessed by a qualified physician. If you have chest pain, breathlessness, palpitations or reduced exercise tolerance, seek medical assessment before beginning any treatment. Last reviewed: July 2026.

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