Since 1988, Tech Plus has designed, installed and maintained hyperbaric chambers for hospitals, armed forces, tunnel boring, professional diving and veterinary care, in France and abroad.
TECH PLUS has been innovating in the field of hyperbaric systems for 38+ years. Our expertise extends across diverse applications, from life-saving medical treatments to cutting-edge industrial solutions. Made in France.
We provide comprehensive engineering services for custom hyperbaric chambers designed to meet specific client requirements across multiple sectors.
Standards & Regulations
National press, military health institutions and the French Ministry of the Armed Forces have covered the work of Tech Plus in hyperbaric medicine and hyperbaric chambers.
Le Figaro
Le Figaro traces Laurent Freani’s path from diving to hyperbaric medicine and the leading role of TECH PLUS, an international company based in Bandol, as hyperbaric therapy extends beyond hospitals.
Read the articleBFM
BFM profiles TECH PLUS, a company from the Var that has been designing and building hyperbaric centres for more than 40 years and exports its expertise worldwide while staying rooted in the region.
Read the articleNice-Matin
Nice-Matin presents the foldable, self-contained multiplace hyperbaric chamber developed in Bandol by Tech Plus for mobile civilian and military use.
Read the articleHIA Sainte-Anne – Service de santé des armées
The Sainte-Anne military teaching hospital in Toulon studied hyperbaric oxygen therapy against Covid-19 complications: Laurent Fréani supplied around thirty oxygen hoods for the patients treated in the chamber.
Read the articleMinistère des Armées
In its “My innovation in 60 seconds” series, the French Ministry of the Armed Forces presents Oracle, a multiplace hyperbaric chamber that can be transported anywhere in the world to treat decompression accidents.
Watch on YouTubeMultiplace hyperbaric oxygen therapy chambers for hospitals and healthcare facilities, designed around the safety of patients and staff.
Multiplace hyperbaric chambers for hospitals
A hyperbaric chamber is a pressurized enclosure with a capacity for one or more persons, used for the purpose of hyperbaric oxygen therapy. These chambers are essential for treating various medical conditions including decompression sickness, carbon monoxide poisoning, and chronic wounds that are slow to heal.
We propose multiplace chambers, with two or more compartments, enabling access of staff, patients and equipment while maintaining the pressure in the main enclosure.
Integrated monitoring systems track vital signs and chamber conditions in real-time
Rapid treatment protocols for diving accidents, carbon monoxide poisoning, and gas embolism
Adjunctive treatment for diabetic ulcers, radiation injuries and non-healing wounds
Comprehensive training programs for medical personnel operating hyperbaric equipment
Critical care for decompression sickness, arterial gas embolism, carbon monoxide poisoning, and crush injuries requiring immediate intervention.
Enhanced healing for diabetic foot ulcers, radiation tissue damage, necrotizing soft tissue infections, and refractory osteomyelitis.
Treatment for sudden sensorineural hearing loss, central retinal artery occlusion, and selected cases of traumatic brain injury.
Up to 6 bar
Multiplace, with two or more compartments
Automated pressure management
Multiple redundant safety protocols
Strategic hyperbaric solutions for defense forces, supporting combat divers, submarine rescue operations, and field medical deployments.
Military hyperbaric chambers for naviesOur hyperbaric chambers for military use are engineered to meet the demanding requirements of armed forces in France and abroad. Built for rapid deployment across theatres of operation and harsh environments, they provide the life support that diving operations and emergency medical care in the field depend on.
We specialize in containerized and transportable systems that can be deployed by air, sea or land to support missions anywhere in the world.
Built to strict military specifications (STANAG) ensuring interoperability and safety
Containerized chambers, ready to operate as soon as they reach the site
On-site decompression chambers for special forces and clearance divers, ensuring safety during high-risk underwater operations.
Fully autonomous, integrated hyperbaric facilities within ruggedized containers or trailers for forward operating bases.
Lightweight, portable chambers designed for in-flight treatment during medical evacuation (MEDEVAC) missions.
Hyperbaric rescue chambers, personnel locks and material locks that protect and support crews working under pressure during tunnel construction.
TBM man locks and tunnel rescue chambersTunnel boring machines (TBMs) work under compressed air to keep water out when excavating water-bearing ground. This pressurized environment protects the crews, but it calls for specialized safety equipment.
Our TBM solutions keep crews safe with rescue chambers, personnel locks and material transfer systems, all designed to operate reliably in pressurized underground environments.
Emergency hyperbaric chambers positioned close to the tunnel face for immediate medical treatment and rescue operations
Lock systems that let workers pass safely between atmospheric and pressurized zones during shift changes
Dedicated chambers for transferring personnel and equipment without affecting tunnel pressure
Locks and chambers supplied for tunnel projects in France and abroad
Gradual pressure reduction, following decompression tables, for a safe exit
Immediate response systems for critical situations
Hydraulic sectional doors designed for tunnel boring machines operating under pressure.
Our hyperbaric sectional doors are designed specifically for TBM galleries, where pressure management and operator safety can be critical. They can be configured for vertical or horizontal opening to suit the requirements of each tunnel project.
The integrated hydraulic system provides fast, controlled operation, even under extreme pressure conditions, with built-in safety mechanisms that protect personnel and keep the pressure stable.
Designed to withstand the extreme pressure in tunnel galleries while maintaining structural integrity
Available with vertical or horizontal opening to suit different tunnel layouts and operational requirements
The doors' integrated hydraulic system provides fast, controlled opening and closing, even in extreme conditions, with emergency backup systems
Decompression and recompression chambers for diving contractors, including 20 ft containerized installations and self-contained units available to rent. Designed in Bandol, France, in line with IMCA guidance.
Deck decompression chambers for commercial divingOn a surface-supplied diving job, the deck decompression chamber (DDC) lets divers complete their decompression at the surface. If a diver develops decompression sickness, it also lets the team recompress them straight away. Industrial diving is one of Tech Plus's long-standing sectors, alongside hospitals, the armed forces and tunnelling. Like the rest of our range, our diving chambers are designed by our design office in Bandol.
Our diving chambers combine a main chamber, an entry airlock and a medicine lock. In the containerized version, chamber, airlock and gas storage are housed together in a 20 ft container, which is transported and lifted as a single unit. Self-contained hyperbaric units of 1,500 mm and 1,600 mm diameter are also available to rent.
A twin-lock layout: each compartment is pressurized independently, so a doctor or attendant can join a diver under pressure while the main chamber stays at treatment pressure. A medicine lock is used to pass medication and supplies in.
Chamber and airlock at 5 bar. Gases stored in B50 cylinders (10 m³ / 200 bar): air, oxygen, heliox or nitrox. Water-spray fire protection in both compartments.
Designed in line with IMCA guidance. Occupants are monitored by camera and kept in contact by intercom, with backup systems, and an oxygen analyser is mounted outside the chamber.
Hull cleaning, propeller polishing and in-water inspections and repairs, with the vessel alongside or at anchor and the chamber on the quay or on deck, close to the dive team.
Salvage and wreck-removal projects mean repeated dives over long periods. A containerized chamber, hired for the duration of the works, stays on site with its own gas storage.
Dams, bridge piers, harbour works, outfalls and subsea cables: coastal and inland projects where the diving contractor needs a decompression chamber within easy reach of its divers.
Mobile hyperbaric chambers in 20 ft containers
Containerized hyperbaric chamber rentalOur rental hyperbaric chambers are built into a 20 ft container: a mobile facility for treating diving-related conditions on site. We also rent self-contained hyperbaric units with diameters of 1,500 and 1,600 mm.
Equal-pressure principle
On the chamber, for medical access
Of the chamber and airlock
Decompression of the main chamber and the personnel lock
External discharge through a relief valve
Cold light in the chamber and airlock
• Communication systems, UPS and cameras
• Backup systems
The fire protection system sprays water into both hyperbaric compartments at a maximum pressure of 5 bar. The water is drained outside the chamber through a condensation system.
Gases stored in B50 cylinders of 10 m³ / 200 bar: air, oxygen, heliox or nitrox.
Hyperbaric oxygen therapy chambers for veterinary clinics, zoos and equestrian centres, designed to support animal care.
Veterinary hyperbaric chambers for horses, dogs and camelsHyperbaric oxygen therapy (HBOT) involves placing the animal in a chamber where it breathes oxygen at a pressure higher than atmospheric pressure.
The technique has several applications in veterinary medicine:
Hyperbaric oxygen increases tissue oxygenation and regeneration, speeding up the healing of difficult wounds: chronic or infected wounds, pressure sores and burns.
Hyperbaric therapy helps assess or improve physical capacity by optimising oxygen supply. In racing camels or horses, for example, it reduces fatigue and improves recovery after intense physical effort.
In animals with joint or muscle inflammation caused by intensive use (racing, transport), hyperbaric therapy reduces inflammation and relieves pain.
HBOT helps fight certain severe infections, such as those caused by anaerobic bacteria (e.g. gas gangrene), by inhibiting their growth and strengthening the immune system.
Used in cases of poisoning by carbon monoxide, smoke or bacterial toxins (tetanus, for example). Hyperbaric oxygen helps eliminate toxins from the blood and tissues quickly.
For animals suffering from hypoxia or ischaemia (lack of oxygen or blood flow) caused by trauma or cardiovascular disease.
HBOT is useful for animals with brain injuries, paralysis or neurological disorders caused by an insufficient oxygen supply.
Increased oxygenation can reduce post-operative complications and improve recovery after major or orthopaedic surgery.
Compact monoplace chambers for dogs, cats and other pets, easy to fit into existing clinic premises.
Large-scale chambers for horses, helping recovery from injuries and improving the performance of racehorses.
Custom solutions for exotic animals and for veterinary research institutions studying oxygen therapy.
Our technical consultants, experienced and present on site daily, ensure the sustainability of your projects and the successful completion of your missions.
Hyperbaric chamber operator trainingRigorous safety protocols
Clinical expertise
Professional diving ops
Expert coordination
Our team supports your hyperbaric chamber project, from defining your requirements through to commissioning.
Centre d'entreprises du Val d'Aran178 chemin de Roumpinas83150 Bandol, France