CRYO-S Painless for cryoanalgesia in pectus excavatum, thoracic surgery

CRYO-S ® Painless

Steps to the painless future

Most technologically advanced device for cryoanalgesia in pectus excavatum repair and other cardiac thoracic procedures.

Mode selection probe, cleaning and freezing can be performed automatically using footswitch or convenient touch screen which allows to keep the site of a procedure under sterile conditions.

RFiD – electronic communication between the probe and device allows recognition of optimal operating parameters and auto-configures to cryoprobe characteristic. Pressure and gas flow are set automatically, any manual adjustment is not necessary.

Contains automatic cryoprobe test system and two freezing modes (continous and sequential). Probe test system includes autocleaning and short freezing test.

Built-in voice communication for easier work. System informing about key figures during procedure.

Diagnostic nervestimulation built-in helps to distinguish between sensory and motor nerves. It prevents from accidental freezing of motor nerves.

The working medium for CRYO-S ®  Painless is carbon dioxide: CO2 (-78°C) or nitrous oxide: N2O (-89°C), very efficient and easy to use gases. A 10 liter cylinder of CO2/N2O serves for approximately 60 procedures.

User friendly interface

CRYO-S ® Painless is controlled by a microprocessor and all the parameters are displayed and monitored on a LCD screen. Cryoprobe temperature, cylinder pressure, gas flow inside of cryobrobe and procedure time are displayed during freezing.

30 years of experience

       CRYO-S ® Painless state-of-the-art cryosurgical device manufactured by METRUM CRYOFLEX is the next generation of apparatus used by many experts in the field since 1992.

Goals of cryoanalgesia in pectus excavatum (PE) repair

  • Pain control as long as pain is expected (from 48 hours before the procedure up to one year)
  • Reduction of drugs and opioids’ intake
  • Reduction of hospital stay (from 6 to 2 days)
  • Fewer complications during procedure
  • Fast return to normal activity

Clinical application of the cryoanalgesia

  • Bilateral thoracoscopy for intraoperative intercostal nerve cryoablation
  • Ultrasound-guided percutaneous bilateral intercostal nerve cryoanalgesia
  • Chest wall pain with multiple conditions including post-thoracotomy neuromas, persistent pain after rib fractures and post-herpetic neuralgia in thoracic distribution
  • Post-op pain prophylaxis after lobectomy and other lung surgeries
  • Post-op pain prophylaxis after rib fracture, flouting rib
Immediate pain reduction
No neuroma formation – no risk of secondary pain
Intercostal nerve grows back – Wallerian degeneration
Simple diagnostics: echography USG
No scar tissue formation
Suitable for patients with pacemakers and stimulators
Shorter hospitalization
Fast return to normal activityFast return to normal activity

The best cryoprobes ever

The thinnest cryoprobes for cryoanalgesia available on the global pain management market. We are offering both single use and multiple use, easy to sterilize (steam) cryoprobess. The special construction enables precise freezing and fast defrosting.

Cryoprobes are all covered with medical teflon. That is why the stimulation is possible only at the probe tip.

All cryprobes are visible in the ultrasound images- they are hyperechogenic.

The largest range of cryobrobes alows to find the best solution.


for ultrasound-guided percutaneous bilateral intercostal nerve cryoanalgesia

Round tip

1.3 mm, lesion up to 10 mm


for bilateral thoracoscopy for intraoperative intercostal nerve cryoablation

Round, angular tip

cryoprobe_rys_tech (1)
2 mm, lesion up to 40 mm

No more painkillers

Cryoanalgesia is a minimally invasive and safe procedure recommended for pectus excavatum repair and other indications related with pain alleviation during surgery preform on the chest wall. Key response factor to cryoanalgesia.

Key response factor to cryoanalgesia

  • Immediate effect,
  • Pain reduction for 6 months to 2 years
  • Ability to perform procedures for patients with pacemakers, implants
  • No scar tissue after – no additional pain, deformity, etc.
  • No neuroma formation – no neuropathic pain
  • No damage to surrounding tissue, bones, muscles, vessels coagulation free

How it works?

Percutaneus cryoanalgesia

for pectus repair – current status and future trends. Pilot study 2021. Barcelona, Spain.


  • Power requirements
    • Power 100÷240 V (50/60 Hz) AC
    • Maximum power consumption 150 VA
  • Cooling medium
    • CO2- 78°C or N2O – 89°C
    • Maximum pressure 70 bars (CO2) and 55 bars (N2O)
    • Working pressure 48÷65 bars (CO2), 38-53 bars (N2O)
  • LCD screen (touch)
  • Voice information system (information about key figures during procedure)
  • Comfortable foot switch controller (dual function)
  • Automatic/Manual control of the flow rate parameters
  • Automatic gas pressure control
  • Freezing temperature control
  • Two operation modes (auto and manual)°
  • Built-in neurostimulator with 2 types of stimulation (sensory and motor) and variety of options for manual settings
    • for motor stimulation: 1 and 2 Hz
    • for sensory stimulation: 50, 100, 150, 200 Hz
    • Impulse width setting: 0.1, 0.2, 0.5, 1.0, 2.0-5.0 ms
Functional modes of unique cryoprobe prepairing system:
  • Standard – cryoprobe is automatically purged before each procedure for several seconds and then a few seconds of testing freezing is performed. In this mode cryoprobe is tested and prepared according to parameters programmed on attached microchip. When such preparation is finished cryoprobe is ready for freezing.
  • Service – it starts automatically when decreased flow rate in cryoprobe or cryoprobe blockage is noticed. It can be performed also during the procedure. Service mode is diagnosing and solving problems caused by previous improper use of the cryoprobe.
  • Dimensions: 39/42/19 cm

  • Weight: 11 kg

Choose the best solution

CRYO-S ® Painless is used by the gratest specialists in the world.