Interventional Endoscopic Spinal Surgery®

IESS® identifies the best endoscopic technique for the surgical treatment of epidural space conditions.

Thanks to its innovative surgical instruments, allowing to operate directly on the pathological structures (fibrosis, scar tissues, FBSS), IESS® Technology stands out from the traditional endoscopic technique, that is exclusively diagnostic.


  • Failed Back Surgery Syndrome (FBSS)
  • Spinal stenosis
  • Low back pain
  • Radiculopathy


Look at the devices:

Discover The IESS®Procedure

Watch the IESS® Video




Directable epidural video-guided catheter

Innovative system designed for the diagnosis and surgical endoscopic treatment of the epidural space.
Resascope and its components are conceived and realized especially for a percutaneous and minimally invasive approach to the spinal canal.

Features & Advantages:

  • Precise 360° guided navigation
  • Revolutionary double lock system: the ability to block the catheter tip on both axes
  • Safe: 2 channels for fluids (for saline infusion and saline recovery into a graduated bag)
  • Comfortable: 3 ways for optic and tools insertion, that have been manufactured on the handle itself, thus reducing the encumbrance on the operating field
  • Resascope version with soft and rigid tip

FabbricaProduzioneAMS Group S.r.l. soc. unip.




Balloon catheter for epiduroplasty

Resaloon is the balloon catheter designed and certified for use together with the Resascope video-guided catheter in the epidural space.

Features & Advantages:

  • It allows the dilation of the stenotic canal
  • It permit to detach pathological adhesions from the dura mater
  • It allows to reduce the volume of saline introduced and to clean the canal, leading to clearer images viewed by optic fiber

FabbricaProduzioneAMS Group S.r.l. soc. unip.




Flexible electrode for surgical lysis with QMR®1 technology
(Quantic Molecular Resonance ®1)

Resaflex allows to reach and treat scar tissues, using Quantic Molecular Resonance ®1 to break the molecular bonds of pathological adhesions.
It must be used only with Resablator50 generator.

Features & Advantages:

  • Designed to remove epidural scar tissues of greater tenacity
  • Flexible angled terminal
  • Operating temperature < 45°C
  • Working precision up to 1 mm






Patented QMR®1 technology (Quantic Molecular Resonance ®1)

Resablator50 provides the ideal energy to break the molecular bonds of pathological structures in the epidural space, without causing any thermal damage or new scar tissue.

Features & Advantages:

  • Operating frequency starting from 4MHz and consecutive waves
  • Used for minimally invasive electrosurgery procedures
  • Surgical procedures carried out with Resablator50 allow faster and painless healing in the post-operative phase
  • Resablator allows 2 types of predictive stimulation tests:
    • Sensory (50Hz), to select and check the treatment area
    • Motor (2Hz), in order to exclude the involvement of motor roots and to increase the therapy’s safety

Physical principles of Quantum Molecular Resonance®1

Every time that energy is transferred to a system, most of that energy turns into heat and dissipates, causing an increase in the temperature of the treated tissue.
The challenge consisted in devising a system that could transfer energy to biological tissues, so as to carry out their ablation without increasing the temperature of the surrounding tissue above 50°C (below this temperature, cells remain viable and undamaged).





The flexible optical fiber represents the most advanced technology in the quality and design of the endoscopic sector.
It is an essential tool to clearly identify the causes of pain and the anatomical structures present in the epidural canal.

Features & Advantages:

  • High resolution optical fiber with 1mm diameter
  • Image transmission at 10.000 pixels
  • Automatic image focusing with a visual field of 70°
  • Equipped with adapters for all light sources currently on the market





Minimum staff necessary for the procedure:

  • 1 nurse in the OR and during patient surveillance
  • 1 surgeon
  • 1 scrub nurse
  • 1 radiology technician


  • 1 anaesthesiologist in the central ORs.

Patient’s position:

The patient is positioned face down, with spontaneous ventilation, arms stretched forward and forearms slightly bent downwards. A pillow is placed under the abdomen, to align the spine. The operating table shall be positioned so as to simplify the use of the radiographic device (fluoroscope).

Preparation of the operating field:

After accurately disinfecting the skin (avoid alcohol-based products), the operating field is prepared according to the surgical asepsis protocols.

Necessary materials to be prepared on the surgical instrument trolley:

  • Surgical kit for Seldinger technique
  • Resascope disposable video-guided catheter
  • Resaloon disposable balloon catheter
  • Resaflex disposable electrode
  • Sterile flexible optical fiber
  • Resablator50 generator

The operating room must be equipped with an endoscopy column.


1 Quantic Molecular Resonance® – Telea Electronic Engineering S.r.l.
2 Produced by Telea Electronic Engineering S.r.l. for AMS Group S.r.l. soc. unip.
3 Karl Storz GmbH & Co. KG