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Patients in white robes during a session in the OxySphere hyperbaric chamber 100% medical oxygen

Hyperbaric medicine clinic · Celje, Slovenia

Hyperbaric oxygen therapy under medical supervision.

A clinic in Celje licensed by the Slovenian Ministry of Health. 100% medical oxygen at pressures of up to 3.0 ATA in the largest multiplace chamber in Slovenia.

How a session works How a session works Rated 4.9 out of 5 on Google (opens in a new tab) 9.8/10 average patient recommendation score
  • Medical protocolsSupervised by trained medical staff
  • up to 3.0 ATAPressure suitable even for the most demanding conditions
  • 11 seatsA spacious chamber for a comfortable, relaxed experience
Watch the presentationVideo · YouTube (opens in a new tab)

Medical directorPrim. Prof. Marjan Koršič, MD, PhDneurosurgeon

Clinic licensed by the Slovenian Ministry of Health to practise hyperbaric medicine

A medically certified BAROKS chamber built to the highest standards of technology and quality.

Media

As featured in

article and video (SL)Oxygen for wound healing and sporting performance (opens in a new tab)

Chamber and safety

The largest multiplace medical chamber in Slovenia.

The BAROKS chamber is purpose-built for safe, effective and comfortable hyperbaric oxygen therapy.

Inside the BAROKS chamber: seats with oxygen masks, windows and a TV screen
11 seatsA multiplace chamber; the centre covers 400 m² of modern premises.
Up to 3.0 ATACertified for pressures up to 3.0 ATA. We also carry out special protocols at higher pressure, e.g. for decompression sickness (2.8 ATA according to US Navy Table 6) or carbon monoxide poisoning (up to 3.0 ATA).
100% oxygenYou breathe medical oxygen through a mask at increased pressure.
Air-conditionedThe interior keeps a pleasant temperature; comfortable seats for longer sessions.
4 TV screensFor relaxation and entertainment, with ambient LED lighting.
Constant supervisionStaff are with you in the chamber during the session; we also monitor you via cameras.
Interior of the chamber in blue light Watch the clinic presentationVideo · YouTube (opens in a new tab)
Pressure door at the end of the BAROKS chamber, dimmed lightingSeats in the chamber with masks and medical oxygen supplyView along the BAROKS chamber: two rows of blue seats with oxygen supply, windows, TV screens and the pressure door at the endView into the chamber from the entrance: seats, windows, TV screen and camera

Select a feature from the list – the photo shows where to find it.

  1. The chamber is certified for pressures of up to 3.0 ATA. Most sessions take place at 2.0–2.5 ATA, and higher pressures are used in special protocols.

  2. During the session you breathe 100% medical oxygen through a mask. The increased pressure allows significantly more oxygen to dissolve in the blood.

  3. A multiplace chamber with comfortable seats for longer sessions. The interior is spacious, and the rectangular shape further reduces any feeling of confinement.

  4. Air conditioning keeps the temperature pleasant.

  5. To relax and pass the time during the 90-minute session, with ambient LED lighting.

  6. Our staff stay with you in the chamber throughout the session, which is also monitored by cameras. Trained healthcare professionals look after each patient’s well-being and control the pressure and oxygen concentration in the chamber.

Why OxySphere

Clinical care, under medical supervision.

Every session takes place in controlled conditions, under medical supervision and with trained healthcare staff.

Before your first session
Before your first session, a doctor examines you and assesses whether the therapy is suitable for you – and, above all, safe.

Who will look after you.

Doctors with in-depth knowledge of hyperbaric medicine and trained healthcare staff – from the first assessment to the end of your treatment.

  1. A doctor examines a patient’s ear with an otoscopeA doctor listens to a patient’s lungs with a stethoscope

    Medical assessment before your first session

    A doctor with in-depth knowledge of hyperbaric medicine examines you, rules out any contraindications and prescribes a suitable protocol.

  2. A staff member fits an oxygen mask on a patientHealthcare staff accompany patients during a session in the chamber

    Preparation and support

    Our healthcare staff prepare you and stay with you throughout the session.

  3. A staff member at the BAROKS chamber control panelA hyperbaric technician monitors the chamber from the control panel during a session

    Monitoring throughout the session

    Sessions are supervised by trained healthcare staff.

A patient breathing medical oxygen through a mask during a session in the chamber

100% medical oxygen

You breathe pure medical oxygen through a mask – not just oxygen-enriched air from an ordinary concentrator.

How the first visit works
9.8/10 average patient recommendation score

Spaciousness

Room to breathe

When people hear “hyperbaric therapy”, many picture a narrow single-person capsule. With us, you sit comfortably in a spacious multiplace chamber – together with other patients and our staff.

“I feel relaxed and safe in the chamber.”
M. N., 59 · patient story
More patient stories
1 person · lying down
Monoplace chamberA capsule for one person
  • You lie down
  • Alone in a capsule
  • A narrow transparent tube
Patients in white robes sit in two rows in the BAROKS chamber during a session, breathing oxygen through masks, next to windows and TV screens11 seats · you sit
The OxySphere chamberBAROKS multiplace chamber
  • You sit comfortably
  • With other patients and our staff
  • Windows and TV screens

During the session

How the 90 minutes fly by

You sit in a comfortable seat and breathe medical oxygen through a mask. Meanwhile you can read, watch TV, play chess or simply rest – take a look at a day in our clinic.

  • Patients in white robes wearing oxygen masks play chess during a session, with a TV screen and chamber window behind them
    Chess with fellow patientsThe TV screen and windows are always within view.
  • A patient wearing an oxygen mask rests with her eyes closed in a comfortable seat during a session
    RestA comfortable seat, closed eyes, calm breathing.
  • A patient wearing an oxygen mask reads in a comfortable seat by the chamber window during a session
    ReadingA book or magazine – 90 minutes for yourself.
  • A glimpse of the clinicPreparation, the session in the chamber, the control desk and the team.

  • You’re not aloneOur staff stay with you in the chamber during the session.

  • Camera monitoringThe session is also monitored by cameras at all times.

  • Rectangular shapeReduces the feeling of confinement; the interior is air-conditioned.

  • Windows and 4 TV screensTo help you relax during the 90-minute session.

Step by step

From your first call to your final session.

Four clear steps. You always know what comes next.

or call+386 70 80 81 00
400 m² of modern premises
  1. 1

    Free consultation

    no obligation

    Call us or send a short enquiry. The consultation is for information only.

  2. 2

    Initial medical assessment

    included in all packages

    First you fill in a health questionnaire. Then a doctor examines you, rules out any contraindications and talks with you about your health concerns and the goals of treatment.

  3. 3

    Protocol and sessions

    90 min

    After the assessment, the doctor recommends the number and frequency of sessions: once a week, 2 to 3 times a week, or for more demanding conditions up to 5 times a week. We schedule appointments around you.

  4. 4

    Follow-up and completion

    We schedule check-ups along the way if needed. At the end of your protocol, we review the results with you and recommend what to do next.

Patient stories

What our patients say

Average recommendation scorefrom 11 patient statements published on our Patient stories page: 9.8 out of 10

Google reviewsGoogle Maps · CeljeRated 4.9 out of 5 based on 23 Google reviews – read the reviews (opens in a new tab)
  • 100+satisfied patients
  • Most commonly reported changesmore energy · better sleep · better mood
All patient stories(opens in a new tab)
Vitality and well-beingRecommendation score: 10/10
“I feel relaxed and safe in the chamber. The staff are exceptionally friendly, professional and always ready to help. Everything is excellently organised, and the premises are new, bright and nicely furnished.”
  • better sleep
  • more energy
  • mental clarity
M. N., 59fewer than 10 sessions
Recovery after surgeryRecommendation score: 10/10
“The staff are friendly, helpful and always happy to help. The chamber is comfortable.”
  • faster recovery
  • better sleep
  • more energy
M. D., 5230 sessions
Sport and recoveryRecommendation score: 10/10
“The staff were very pleasant, and the seats in the chamber are nice and comfortable.”
  • faster regeneration
  • better sleep
  • more energy
S. Ž., 4015 sessions
All patient stories(opens in a new tab)

Pricing

Pricing and packages

Most effects of hyperbaric oxygen therapy build up gradually – session by session. That is why we have put together packages for the most common goals: from faster recovery after exertion to longer healing and rehabilitation programmes. For regular maintenance sessions over a longer period, we also offer a special OxySphere Club membership.

Also available as a gift voucherAny amount – for sessions, packages or a medical assessment. Give as a gift

The medical assessment before your first session is included in all packages and memberships.Whatever the package size or membership level – at no extra cost.

01Intensive protocol · packagesA condensed programme of sessions

5-session package

€450

5 sessions · 90 min each

Often chosen for recovery

  • sports recovery
  • recovery after exertion
  • around competitions
  • support around aesthetic procedures
Price per session€90

You save €50compared with 5 single sessions

  • Medical assessment before the first session is included
  • 100% medical oxygen under staff supervision
  • Instalment payment option (Leanpay, customers in Slovenia only)
Most popular

10-session package

€800

10 sessions · 90 min each

Often chosen as a first cycle

  • general vitality
  • sleep quality
  • energy and well-being
Price per session€80

You save €200compared with 10 single sessions

  • Medical assessment before the first session is included
  • 100% medical oxygen under staff supervision
  • Instalment payment option (Leanpay, customers in Slovenia only)

20-session package

€1,400

20 sessions · 90 min each

Often chosen for rehabilitation

  • recovery after injury
  • post-operative healing
  • soft-tissue regeneration
  • avascular bone necrosis
Price per session€70

You save €600compared with 20 single sessions

  • Medical assessment before the first session is included
  • 100% medical oxygen under staff supervision
  • Instalment payment option (Leanpay, customers in Slovenia only)
Lowest price per session

30-session package

€1,800

30 sessions · 90 min each

Often chosen for longer programmes

  • chronic wounds
  • neuro­rehabilitation
  • radiation injuries
  • longevity
Price per session€60

You save €1,200compared with 30 single sessions

  • Medical assessment before the first session is included
  • 100% medical oxygen under staff supervision
  • Instalment payment option (Leanpay, customers in Slovenia only)

The circle shows how much less one session costs in a package than as a single session (€100). The examples are only the most common goals – the doctor will recommend the number and frequency of sessions after your assessment.

Price of one session

up to −40%

With the 30-session package you pay €60 per session instead of €100.

Buy online in three stepsPay securely by card – we’ll schedule your appointments with you afterwards. Prefer email? Write to us and we’ll send you an offer.

  1. 1Choose a packageor a single session
  2. 2Enter your details and payby card online
  3. 3We call youto schedule your assessment and sessions
Write to us for an offer(info@oxysphere.si)
02Maintenance and regeneration protocol · OxySphere Club

OxySphere Club

A regular maintenance protocol.

Limited to 30 members

The OxySphere Club is a programme of regular sessions in the hyperbaric chamber – a maintenance and regeneration protocol. It is designed for patients who want to maintain their results after completing an intensive protocol, as well as for athletes and anyone looking for regular regeneration and support for the body.

  • After an intensive protocolYou’ve completed an intensive protocol – now keep the results.
  • AthletesRegular regeneration as part of training.
  • Regular regenerationHealth needs maintenance too.

Mini membership

For regular visits twice a month

€139/ month

  • Sessions2 per month · 90 min
  • Price per session€69.50 −30%
  • Membershipat least 6 months
VIP · once a week

Max membership

For regular weekly regeneration

€239/ month

  • Sessions4 per month · 1 per week
  • Price per session€59.75 −40%
  • Membershipat least 6 months

Included in both levels

  • Medical assessment before the first session – at no extra cost (otherwise €70)
  • Follow-up medical assessment every 6 months of membership
  • Appointments by arrangement and a reminder the day before the session
  • Carry over one unused session to the following month
  • Monthly invoice by email
Package or membership?Package – a condensed programme, usually 2–3 sessions per weekMembership – regular sessions over a longer period, 2 or 4 per month
Package · condensedMax membership · 1 per weekMini membership · 2 per month 123456789101112 week This illustrates the rhythm only – it is not a recommendation. You don’t need to complete a package first; the doctor proposes the number and frequency of sessions after your assessment.

Become a member

  1. 1Call or write to uswe’ll help you choose Mini or Max
  2. 2Medical assessmentincluded in the membership
  3. 3Sign up and startsign the membership form at the clinic and pay the first monthly fee
Call +386 70 80 81 00 Write to us(info@oxysphere.si) General membership terms (in Slovenian)

Membership runs for a minimum of 6 months and can then be cancelled with one month’s notice. If the doctor considers the sessions unsuitable for you, membership ends immediately with no further payments. Max includes at most one session per week. You can join after a medical assessment. Membership does not guarantee any health or other effects and does not replace medical treatment.

Individual services

  • Medical assessment before your first sessionincluded with any package€70
  • Hyperbaric oxygen therapy (90 min)
    €100
  • Consultation and advice€50
Instalment payments with LeanpayCustomers in Slovenia only · no down payment(opens in a new tab) Full price listAll services and packages in one place

Prices valid from 1 October 2025. All prices are in EUR. Healthcare services provided within a registered healthcare activity are exempt from VAT under Article 42(1) of the Slovenian VAT Act (ZDDV-1).

Session frequency

Rhythm matters too, not just the number of sessions.

The effect of hyperbaric oxygen therapy is cumulative – angiogenesis, the anti-inflammatory shift and stem-cell mobilisation build up through consecutive, closely spaced sessions. If visits are too far apart, the biological response partly drifts back towards baseline between sessions and the cycle loses momentum. That’s why we always recommend not just how many sessions you need, but also how often to come.

How it works

What is hyperbaric oxygen therapy?

The patient breathes 100% oxygen in a special pressure chamber at increased pressure (usually between 2.0 and 2.5 ATA). This greatly increases the amount of oxygen dissolved in the blood and thus improves the oxygen supply to the tissues.

This speeds up wound healing and tissue regeneration, reduces inflammation and supports the treatment of many acute and chronic conditions.

  1. 1More oxygen in the blood
  2. 2Energy for cells
  3. 3Tissue regeneration

Note: HBOT supports medical treatment and does not replace consultation with or treatment by a doctor.

Pressure in the chamber Scale from 1.0 to 3.0 ATA. The usual therapeutic pressure is between 2.0 and 2.5 ATA. The chamber is certified for pressures up to 3.0 ATA. 1.0 ATA is the air pressure at sea level. 1.0 1.5 2.0 2.5 3.0 2,0–2,5 ATA
  • 2.0–2.5 ATAusual therapeutic pressure
  • up to 3.0 ATAmaximum pressure for which the chamber is certified
  • 1.0 ATAatmospheric pressure at sea level
  1. 1More oxygen in the blood
  2. 2Energy for cells
  3. 3Tissue regeneration

100% medical oxygen90 minutesconstant supervision

Pressure in the chamber

Drag the pointer or the slider: compare the pressure with depth below sea level and with oxygen in the plasma.

Pressure gauge from 1.0 to 3.0 ATA1.01.52.02.53.0

Usual therapeutic pressure

Most sessions take place at 2.0–2.5 ATA. During the session you breathe 100% medical oxygen through a mask.

Comparable to the pressure at a depth of about 10–15 m below sea level.

At a depth of 10 m the pressure is about 2 ATA, and every further 10 m adds about 1 ATA. Source: NATO STO, Practical Application of Hyperbaric Oxygen Therapy (EN-HFM-245). Dissolved oxygen: estimate based on NATO STO EN-HFM-245-02 (Mutluoglu, Hyperbaric Oxygen Physiology) – arterial pO₂ with 100% oxygen 625 / 1356 / 1700 mmHg at 1.0 / 2.0 / 2.5 ATA, about 6.8 ml/dl at 3 ATA, solubility 0.003 ml/dl/mmHg; breathing air 0.32 ml/dl. Intermediate values are interpolated – an illustration, not a measurement.

  1. 1 More oxygen in the blood – read the article in the knowledge base (in Slovenian, opens in a new tab)

    Increased pressure allows up to 15 times more oxygen to dissolve in the blood plasma than with normal breathing.

  2. 2 Energy for cells – read the article in the knowledge base (in Slovenian, opens in a new tab)

    When cells receive more oxygen, their metabolism and ability to regenerate improve.

  3. 3 Tissue regeneration – read the article in the knowledge base (in Slovenian, opens in a new tab)

    It has been shown to speed up the closure of acute and chronic wounds, reduce swelling (oedema) and inhibit harmful inflammatory processes.

100% medical oxygen90 minutesconstant supervision

Indications

Who is the treatment for?

Important: The doctor decides on the suitability of treatment, the number of visits and the parameters after the assessment.

Important: The doctor decides on the suitability of treatment, the number of visits and the parameters after the assessment.

Explore the full article database (in Slovenian)

Our articles explain the latest scientific research on hyperbaric oxygen therapy in plain language (in Slovenian).

Open the article database (SL)(opens in a new tab)

Frequently asked questions

Before you decide

Can’t find an answer? Give us a call.

+386 70 80 81 00

Therapy

Is it cramped in the chamber? What if I am claustrophobic?

The BAROKS chamber is the largest multiplace medical hyperbaric chamber in Slovenia, with 11 seats. The interior is air-conditioned, lit with ambient LED lighting and equipped with four TV screens. It is designed for comfort and space, and its rectangular shape further reduces any feeling of confinement.

You are not alone during the session – our staff are with you in the chamber, and the session is also monitored by cameras.

If you are worried about feeling confined, mention it at the consultation or assessment. In cases of severe claustrophobia, the doctor decides whether the therapy is suitable.

How many sessions do I need?

The number of sessions is determined by the doctor at the initial assessment – based on your health, your goals and how you respond to the therapy.

The effects of hyperbaric oxygen build up gradually. Better oxygen supply to the tissues begins during the session itself, while processes such as the formation of new small blood vessels develop over several weeks and require a series of consecutive sessions.

As a guide: the studies we summarise in our knowledge base used protocols of roughly 20 to 60 sessions – for example 40 sessions in a study on athletes and 60 sessions (five per week) in a study on brain ageing; late effects of radiotherapy often require 30–60 sessions. Patients who have shared their experience with us mostly completed between 10 and 30 sessions.

Example protocol: a study on healthy brain ageing (in Slovenian)(opens in a new tab)

Safety and preparation

Why is a medical assessment needed before the first session?

Hyperbaric oxygen therapy is a medical procedure, so nobody enters the chamber without a prior medical assessment. The doctor reviews your health and medications, discusses your goals, rules out any contraindications and sets the protocol – the number of sessions and the pressure. Before the assessment you fill in a health questionnaire.

HBOT is not possible, for example, with an untreated pneumothorax, an acute upper respiratory infection, severe middle-ear disease or treatment with certain chemotherapy drugs. In cases of epilepsy, severe claustrophobia, serious cardiovascular disease, pregnancy, poorly controlled diabetes or after recent surgery, the doctor decides whether it is suitable.

The assessment is included in the price of every package.

Is hyperbaric oxygen therapy safe?

Sessions take place in a clinic licensed by the Slovenian Ministry of Health, in a medically certified BAROKS chamber, under the supervision of a doctor and trained healthcare staff. Before the first session the doctor rules out contraindications, and during the session staff monitor your well-being, the pressure and the oxygen concentration.

In properly selected patients, side effects are mostly mild. The most common is ear pressure or mild ear barotrauma. Serious complications are very rare.

Source: Turning back the biological clock (knowledge base, in Slovenian)(opens in a new tab)

Packages and payment

Is the cost covered by health insurance?

Treatment at our clinic is self-funded and charged according to our published prices. You don’t need a referral – just call us or send an enquiry.

With a package, the price per session drops to as little as €60, and customers in Slovenia can also pay the total in instalments.

Can I pay in instalments?

Yes – customers in Slovenia can pay for session packages in instalments through Leanpay, with no down payment.

  • Let us know at the clinic that you’d like to pay with Leanpay.
  • You receive a secure link by SMS to enter your details.
  • You get a decision within moments and can start your sessions straight away.

You can check your limit free of charge before your visit.

Terms and procedure: Instalment payments with Leanpay (in Slovenian)(opens in a new tab)

All questions · 12 answers

Is hyperbaric therapy right for you?

Find out for free – no obligation.

or call +386 70 80 81 00

Free consultation

Is hyperbaric therapy right for you?

Find out for free – no obligation.

From faster recovery after illness and injury to longevity and elite sports recovery – tell us about your current health challenges or goals. Our expert team at OxySphere Medical will review your case and give you an evidence-based opinion on whether the therapy could help you recover faster and feel better.

What happens after you send it

  1. We review your caseYour question is reviewed by our expert team.
  2. We reply by emailAs soon as possible, depending on current demand. If needed, we will also call you.
  3. If you wish, we book your medical assessmentA doctor makes the final decision after the assessment.
Prefer to call? +386 70 80 81 00
Free consultation
  • Licensed by the Slovenian Ministry of Health
  • 4.9 on Google · 23 reviews
What are you interested in? You can choose more than one option.

Note: the free consultation is for information only. Whether the therapy is suitable for you is decided by a doctor at the mandatory medical assessment.

Your data is safe and strictly protected. The consultation is free and does not commit you to a purchase.

The OxySphere clinic building in Celje at night

Visit us in Celje

  • Free parking
  • Wheelchair access
  • Public transport nearby
Directions(opens in a new tab)
Call

Buy online

Buy a package online – we’ll schedule your appointments with you afterwards.

  • The medical assessment before your first session is included in all packages.
  • Pay by card online.
  • Instalment payments via Leanpay (customers in Slovenia only).
  • Prefer to call? +386 70 80 81 00

Buy sessions online

Transparent pricing, published up front.

1. Choose a package or a single session

10-session package€800
  • €80 per session
  • You save €200 compared with single sessions
  • Medical assessment before the first session is included (worth €70)

2. What happens next

  1. 1Choice
  2. 2Details
  3. 3Payment
  4. 4Call

After your purchase, we’ll call you to schedule your medical assessment and sessions.

The booking and payment form opens in Slovenian. Need help? Call +386 70 80 81 00 or write to info@oxysphere.si.

Free consultation

Find out for free – no obligation.

  • Our expert team reviews your case.
  • A doctor makes the final decision after the mandatory medical assessment.
  • Prefer to call? +386 70 80 81 00

Is hyperbaric therapy right for you?

Find out for free – no obligation.

Our expert team at OxySphere Medical will review your case and give you an evidence-based opinion on whether the therapy could help you recover faster and feel better.

Note: the free consultation is for information only. Whether the therapy is suitable for you is decided by a doctor at the mandatory medical assessment.

Your data is safe and strictly protected. The consultation is free and does not commit you to a purchase.

Prefer to call? +386 70 80 81 00

Pricing

Pricing and packages

Transparent pricing, published up front.

Valid from 1 October 2025
  • The medical assessment before your first session is included in all packages
  • Price per session up to 40% lower
  • Instalment payments via Leanpay (customers in Slovenia only)

Hyperbaric oxygen therapy 90 minutes, 100% medical oxygen

  • Hyperbaric oxygen therapy (90 minutes)Single session

    €100

  • 5-session package5 × hyperbaric oxygen therapy (90 minutes)Includes a free medical assessment before the first session.
    Price per session€90−10%

    €450You save €50

  • Most popular10-session package10 × hyperbaric oxygen therapy (90 minutes)Includes a free medical assessment before the first session.
    Price per session€80−20%

    €800You save €200

  • 20-session package20 × hyperbaric oxygen therapy (90 minutes)Includes a free medical assessment before the first session.
    Price per session€70−30%

    €1,400You save €600

  • Lowest price per session30-session package30 × hyperbaric oxygen therapy (90 minutes)Includes a free medical assessment before the first session.
    Price per session€60−40%

    €1,800You save €1,200

Savings and percentages are calculated against the price of a single session (€100).

Assessment and advice

  • Medical assessment before your first sessionincluded with any package

    €70

  • Consultation and advice

    €50

  • Prices valid from 1 October 2025.
  • All prices are in EUR.
  • Healthcare services provided within a registered healthcare activity are exempt from VAT under Article 42(1) of the Slovenian VAT Act (ZDDV-1).

Celje, 20 September 2025
OxySphere Medical
FAQ
SLEN
+386 70 80 81 00
Patients in white robes wearing oxygen masks during a session in the OxySphere multiplace chamber, lit in blue 100%medical oxygen

Therapeutic pressure in the chamber: 2.0 to 2.5 ATA, equivalent to 10 to 15 metres under the sea.

Hyperbaric medicine clinic

Hyperbaric oxygen therapy under medical supervision.

A clinic in Celje licensed by the Slovenian Ministry of Health. 100% medical oxygen at pressures of up to 3.0 ATA in the largest multiplace chamber in Slovenia.

How a session works
4.923 reviews on GoogleRated 4.9 out of 5 on Google – read the reviews(opens in a new tab) Patient
stories
From our clinic
A glimpse of the clinic. Preparation, the session in the chamber, the control desk and the team.

Medical directorPrim. Prof. Marjan Koršič, MD, PhDneurosurgeon

Clinic licensed by the Slovenian Ministry of Health to practise hyperbaric medicine

A medically certified BAROKS chamber built to the highest standards of technology and quality.

Media

As featured in

article and video (SL)Oxygen for wound healing and sporting performance (opens in a new tab)

Chamber and safety

The largest multiplace medical chamber in Slovenia.

The BAROKS chamber is purpose-built for safe, effective and comfortable hyperbaric oxygen therapy.

Pressure door of the BAROKS medical chamber
Medical chamber up to 3.0 ATAThe chamber is certified for pressures of up to 3.0 ATA. Most sessions take place at 2.0–2.5 ATA, and higher pressures are used in special protocols.
  • Up to 3.0 ATACertified for pressures up to 3.0 ATA. We also carry out special protocols at higher pressure, e.g. for decompression sickness (2.8 ATA according to US Navy Table 6) or carbon monoxide poisoning (up to 3.0 ATA).
  • 100% oxygenYou breathe medical oxygen through a mask at increased pressure.
  • 11 seatsA multiplace chamber; the centre covers 400 m² of modern premises.
  • Air-conditionedThe interior keeps a pleasant temperature; comfortable seats for longer sessions.
  • 4 TV screensFor relaxation and entertainment, with ambient LED lighting.
  • Constant supervisionStaff are with you in the chamber during the session; we also monitor you via cameras.

Spaciousness

Room to breathe

When people hear “hyperbaric therapy”, many picture a narrow single-person capsule. With us, you sit comfortably in a spacious multiplace chamber – together with other patients and our staff.

“I feel relaxed and safe in the chamber.”
M. N., 59 · patient story
More patient stories(opens in a new tab)
1 person · lying down
Monoplace chamberA capsule for one person
  • You lie down
  • Alone in a capsule
  • A narrow transparent tube
Patients in white robes sit in two rows in the BAROKS chamber during a session, breathing oxygen through masks, next to windows and TV screens11 seats · you sit
The OxySphere chamberBAROKS multiplace chamber
  • You sit comfortably
  • With other patients and our staff
  • Windows and TV screens

During the session

How the 90 minutes fly by

You sit in a comfortable seat and breathe medical oxygen through a mask. Meanwhile you can read, watch TV, play chess or simply rest – take a look at our video too.

  • You’re not aloneOur staff stay with you in the chamber during the session.

  • Camera monitoringThe session is also monitored by cameras at all times.

  • Rectangular shapeReduces the feeling of confinement; the interior is air-conditioned.

  • Windows and 4 TV screensTo help you relax during the 90-minute session.

Why OxySphere

Clinical care, under medical supervision.

Every session takes place in controlled conditions, under medical supervision and with trained healthcare staff.

Before your first sessionFrom our clinic
Before your first session, a doctor examines you and assesses whether the therapy is suitable for you – and, above all, safe.

Who will look after you.

Doctors with in-depth knowledge of hyperbaric medicine and trained healthcare staff – from the first assessment to the end of your treatment.

01

Medical assessment before your first session

A doctor with in-depth knowledge of hyperbaric medicine examines you, rules out any contraindications and prescribes a suitable protocol.

02

Preparation and support

Our healthcare staff prepare you and stay with you throughout the session.

03

Monitoring throughout the session

Sessions are supervised by trained healthcare staff.

A patient breathing medical oxygen through a mask during a session in the chamber

100% medical oxygen

You breathe pure medical oxygen through a mask – not just oxygen-enriched air from an ordinary concentrator.

How the first visit works
9.8/10 average patient recommendation score

Patient stories

Our patients’ experiences.

Average recommendation scorefrom patient statements published on our Patient stories page: 9.8 out of 10

Google reviewsGoogle Maps Rated 4.9 out of 5 based on 23 Google reviews – read the reviews (opens in a new tab)
  • 100+satisfied patients
  • Most commonly reported changesmore energy · better sleep · better mood
Vitality and well-beingRecommendation score: 10/10

“I feel relaxed and safe in the chamber. The staff are exceptionally friendly, professional and always ready to help. Everything is excellently organised, and the premises are new, bright and nicely furnished.”

  • better sleep
  • more energy
  • mental clarity
M. N., 59fewer than 10 sessions
Recovery after surgeryRecommendation score: 10/10

“The staff are friendly, helpful and always happy to help. The chamber is comfortable.”

  • faster recovery
  • better sleep
  • more energy
M. D., 5230 sessions
Sport and recoveryRecommendation score: 10/10

“The staff were very pleasant, and the seats in the chamber are nice and comfortable.”

  • faster regeneration
  • better sleep
  • more energy
S. Ž., 4015 sessions

All statements are authentic and published with the patients’ written consent (GDPR). Identities are anonymised using initials. Translated from Slovenian.

All patient stories(opens in a new tab)

Step by step

From your first call to your final session.

Four clear steps. You always know what comes next.

  1. Free consultation

    Call us or send a short enquiry. The consultation is for information only.

    no obligation

  2. Initial medical assessment

    First you fill in a health questionnaire. Then a doctor examines you, rules out any contraindications and talks with you about your health concerns and the goals of treatment.

    included in all packages

  3. Protocol and sessions

    After the assessment, the doctor recommends the number and frequency of sessions: once a week, 2 to 3 times a week, or for more demanding conditions up to 5 times a week. We schedule appointments around you.

    90 min

  4. Follow-up and completion

    We schedule check-ups along the way if needed. At the end of your protocol, we review the results with you and recommend what to do next.

or call +386 70 80 81 00
400 m² of modern premises
01The clinic in Celje
02Reception
03Waiting room
04Consulting room
05Changing rooms
06Room for patients, events and education

Pricing

Pricing and packages.

Most effects of hyperbaric oxygen therapy build up gradually – session by session. That is why we have put together packages for the most common goals: from faster recovery after exertion to longer healing and rehabilitation programmes. For regular maintenance sessions over a longer period, we also offer a special OxySphere Club membership.

Also available as a gift voucherAny amount – for sessions, packages or a medical assessment. Give as a gift

The medical assessment before your first session is included in all packages and memberships.Whatever the package size or membership level – at no extra cost.

01Intensive protocol · packagesA condensed programme of sessions
Choose the number of sessions

Most popular package

10-session package

€800

10 × hyperbaric oxygen therapy (90 minutes)

€200 less than 10 single sessions

Price per session −20%€80

Compared with the price of a single session (€100).

Often chosen as a first cycle

  • general vitality
  • sleep quality
  • energy and well-being

Includes a free medical assessment before the first session.

The bar shows how much less one session costs in a package than as a single session. The examples are only the most common goals – the doctor will recommend the number and frequency of sessions after your assessment.

Price of one session

up to −40%

With the 30-session package you pay €60 per session instead of €100.

Buy online in three stepsPay securely by card – we’ll schedule your appointments with you afterwards.

  1. 1Choose a packageor a single session
  2. 2Enter your details and payby card online
  3. 3We call youto schedule your assessment and sessions
02 · Maintenance protocolOxySphere ClubRegular sessions over a longer period – to maintain the results achieved and for regular regeneration. Mini · 2× a month€139/ monthMax · 4× a month€239/ month Membership detailsClose details
02Maintenance and regeneration protocol · OxySphere Club

OxySphere Club

A regular maintenance protocol.

Limited to 30 members

The OxySphere Club is a programme of regular sessions in the hyperbaric chamber – a maintenance and regeneration protocol. It is designed for patients who want to maintain their results after completing an intensive protocol, as well as for athletes and anyone looking for regular regeneration and support for the body.

  • After an intensive protocolYou’ve completed an intensive protocol – now keep the results.
  • AthletesRegular regeneration as part of training.
  • Regular regenerationHealth needs maintenance too.

Mini membership

For regular visits twice a month

€139/ month

  • Sessions2 per month · 90 min
  • Price per session€69.50 −30%
  • Membershipat least 6 months
VIP · once a week

Max membership

For regular weekly regeneration

€239/ month

  • Sessions4 per month · 1 per week
  • Price per session€59.75 −40%
  • Membershipat least 6 months

Included in both levels

  • Medical assessment before the first session – at no extra cost (otherwise €70)
  • Follow-up medical assessment every 6 months of membership
  • Appointments by arrangement and a reminder the day before the session
  • Carry over one unused session to the following month
  • Monthly invoice by email
Package or membership?Package – a condensed programme, usually 2–3 sessions per weekMembership – regular sessions over a longer period, 2 or 4 per month
Package · condensedMax membership · 1 per weekMini membership · 2 per month 123456789101112 week This illustrates the rhythm only – it is not a recommendation. You don’t need to complete a package first; the doctor proposes the number and frequency of sessions after your assessment.

Become a member

  1. 1Call or write to uswe’ll help you choose Mini or Max
  2. 2Medical assessmentincluded in the membership
  3. 3Sign up and startsign the membership form at the clinic and pay the first monthly fee
Call +386 70 80 81 00 Write to us(info@oxysphere.si) General membership terms (in Slovenian)

Membership runs for a minimum of 6 months and can then be cancelled with one month’s notice. If the doctor considers the sessions unsuitable for you, membership ends immediately with no further payments. Max includes at most one session per week. You can join after a medical assessment. Membership does not guarantee any health or other effects and does not replace medical treatment.

Individual services

  • Hyperbaric oxygen therapy (90 minutes)€100
  • Medical assessment before your first sessionincluded with any package€70
  • Consultation and advice€50
Instalment payments Customers in Slovenia only · no down payment(opens in a new tab)

Prices valid from 1 October 2025. All prices are in EUR. Healthcare services provided within a registered healthcare activity are exempt from VAT under Article 42(1) of the Slovenian VAT Act (ZDDV-1).

Session frequencyThe rhythm matters too, not just the number of sessions.

Session frequency

Rhythm matters too, not just the number of sessions.

The effect of hyperbaric oxygen therapy is cumulative – angiogenesis, the anti-inflammatory shift and stem-cell mobilisation build up through consecutive, closely spaced sessions. If visits are too far apart, the biological response partly drifts back towards baseline between sessions and the cycle loses momentum. That’s why we always recommend not just how many sessions you need, but also how often to come.

How it works

What is hyperbaric oxygen therapy?

The patient breathes 100% oxygen in a special pressure chamber at increased pressure (usually between 2.0 and 2.5 ATA). This greatly increases the amount of oxygen dissolved in the blood and thus improves the oxygen supply to the tissues.

This speeds up wound healing and tissue regeneration, reduces inflammation and supports the treatment of many acute and chronic conditions.

Pressure in the chamber

usual therapeutic pressure

Pressure gauge from 1.0 to 3.0 ATA; the usual therapeutic range between 2.0 and 2.5 ATA is marked. 1.0 1.5 2.0 2.5 3.0

2.5ATA

The upper limit of the usual therapeutic pressure.

comparable to a depth of about 15 m

Choose a pressure to see the explanation

At a depth of 10 m the pressure is about 2 ATA, and every further 10 m adds about 1 ATA. Source: NATO STO, Practical Application of Hyperbaric Oxygen Therapy (EN-HFM-245). Oxygen in plasma: estimate based on NATO STO EN-HFM-245-02 (when breathing 100% oxygen; air 0.32 ml/dl) – an illustration, not a measurement. The pressure and number of sessions are set for you by the doctor after the assessment.

  1. 1

    More oxygen in the blood

    Increased pressure allows up to 15 times more oxygen to dissolve in the blood plasma than with normal breathing.

    Read in the knowledge base (SL)Increased perfusion: oxygen also reaches poorly perfused tissues(opens in a new tab)
  2. 2

    Energy for cells

    When cells receive more oxygen, their metabolism and ability to regenerate improve.

    Read in the knowledge base (SL)How hyperbaric oxygen therapy works(opens in a new tab)
  3. 3

    Tissue regeneration

    It has been shown to speed up the closure of acute and chronic wounds, reduce swelling (oedema) and inhibit harmful inflammatory processes.

    Read in the knowledge base (SL)Neovascularisation: how the body builds new blood vessels(opens in a new tab)

Hyperbaric oxygen therapy supports treatment and does not replace a consultation or treatment by a doctor.

More on how it works (SL)(opens in a new tab)
Jakob Omrzel and how pressurised oxygen is part of his regeneration protocolRead the article (SL)(opens in a new tab)

Indications

Who is the treatment for?

Recognised indicationAn officially approved adjunctive treatment in Slovenia.

The chamber is certified for pressures of up to 3.0 ATA, so the clinic also carries out special protocols, for example for decompression sickness.

Comprehensive guide – indications recommended by the ECHM (SL)(opens in a new tab)

Important: The doctor decides on the suitability of the therapy, the number of visits and the parameters after the assessment.

Can’t find your condition?

Tell us about your health concern – free, with no obligation.

or call +386 70 80 81 00
Explore the full article database (in Slovenian)

Our articles explain the latest scientific research on hyperbaric oxygen therapy in plain language (in Slovenian).

Open the article database (SL)(opens in a new tab)

Frequently asked questions

Before you decide.

The BAROKS chamber is the largest multiplace medical hyperbaric chamber in Slovenia, with 11 seats. The interior is air-conditioned, lit with ambient LED lighting and equipped with four TV screens. It is designed for comfort and space, and its rectangular shape further reduces any feeling of confinement.

You are not alone during the session – our staff are with you in the chamber, and the session is also monitored by cameras.

If you are worried about feeling confined, mention it at the consultation or assessment. In cases of severe claustrophobia, the doctor decides whether the therapy is suitable.

The number of sessions is determined by the doctor at the initial assessment – based on your health, your goals and how you respond to the therapy.

The effects of hyperbaric oxygen build up gradually. Better oxygen supply to the tissues begins during the session itself, while processes such as the formation of new small blood vessels develop over several weeks and require a series of consecutive sessions.

As a guide: the studies we summarise in our knowledge base used protocols of roughly 20 to 60 sessions – for example 40 sessions in a study on athletes and 60 sessions (five per week) in a study on brain ageing; late effects of radiotherapy often require 30–60 sessions. Patients who have shared their experience with us mostly completed between 10 and 30 sessions.

Example protocol: a study on healthy brain ageing (in Slovenian) (opens in a new tab)

All questions · 12 answers

Can’t find an answer? Give us a call.

+386 70 80 81 00

Free consultation

Is hyperbaric therapy right for you?

Find out for free – no obligation.

From faster recovery after illness and injury to longevity and elite sports recovery – tell us about your current health challenges or goals. Our expert team at OxySphere Medical will review your case and give you an evidence-based opinion on whether the therapy could help you recover faster and feel better.

Free consultationLicensed by the Slovenian Ministry of Health · 4.9 on Google
What are you interested in? You can choose more than one option.

The free consultation is for information only. Whether the therapy is suitable for you is decided by a doctor at the mandatory medical assessment.

Your data is safe and strictly protected. The consultation is free and does not commit you to a purchase.

The form is open in the window below.

What happens after you send it

  1. We review your caseYour question is reviewed by our expert team.
  2. We reply by emailAs soon as possible, depending on current demand. If needed, we will also call you.
  3. If you wish, we book your medical assessmentA doctor makes the final decision after the assessment.
Prefer to call? +386 70 80 81 00

Contact

Visit us in Celje.

The OxySphere clinic in Celje at night
Opekarniška cesta 1, Celje, SloveniaFree parking right next to the building.
  • AddressOpekarniška cesta 1, 3000 Celje, Slovenia
  • Phone+386 70 80 81 00
  • Emailinfo@oxysphere.si
  • Opening hoursMon–Fri 8:00–15:00. Therapy sessions by schedule and by appointment.
  • Free parking
  • Wheelchair access
  • Public transport nearby
Directions(opens in a new tab) Call
Call +386 70 80 81 00
Step 1 of 2

Is hyperbaric therapy right for you?

Our expert team at OxySphere Medical will review your case against the latest research and give you an evidence-based opinion on whether the therapy could help you recover faster and feel better.

  • Licensed by the Slovenian Ministry of Health
  • 4.9 on Google
  • No obligation
What are you interested in? You can choose more than one option.

Note: the free consultation is for information only. Whether the therapy is suitable for you is decided by a doctor at the mandatory medical assessment.

Your data is safe and strictly protected. The consultation is free and does not commit you to a purchase.

Prefer to call? +386 70 80 81 00
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