PI.R2 | Linksium
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Guiding radiology

profilePhoto   Luc Oba
Linksium Contact Luc Oba +33 (0)7 88 29 64 29 luc.oba@linksium.fr
160014 PIR2


  • Supports, positions and inserts a needle compatible with CT scanner and MRI

Key words

  • Robot
  • Interventional radiology
  • Needle insertion

Intellectual Property

  • 1 patent
  • 2 software
  • 2 knowhow




  • CNRS
  • UGA

Linksium Continuum

  • Maturation
  • Incubation


In interventional radiology today, a lead wire visible on the scanner image is placed on the patient and the distance to the point of insertion is calculated with a ruler. The successful direction of the needle depends heavily on the training of the clinician, who must proceed heuristically. This extends the duration and discomfort of the procedure, although this is minimally invasive depending on the expertise of the clinician and the positioning of the target. Some targets that are too deep or show double obliquity in the insertion are converted into surgery as they are too difficult or dangerous to reach by this process.
The system offered by the laboratory holds and inserts the needle instead of the clinician, although always under his/her supervision. It enables a more precise movement and a single test and is compatible with both CT and MRI scanning.


Robotic system compatible with CT and MRI scanning:

  • Supports, positions and inserts a needle
  • Compatible with all types of needle used in interventional radiology
  • Attaches to the patient to monitor movements
  • Integrates a trajectory planning tool
  • Becomes integrated within routine clinical protocol


Saves time, reduces irradiation (patient and clinician), increases precision for complicated movements, develops movements (especially with MRI):

  • With CT scan: Makes it possible to work in real time and monitor the needle’s progress while avoiding irradiation. Provides precision
  • With MRI: Facilitates interventions using MRI, which are still unusual. Enables interventions on mobile targets (kidneys, liver, etc.) and targets that are not visible on X-ray.

State of progress

Initial tests have been conducted on phantoms with CT scanning and on healthy MRI patients:

  • Average installation time 7 mins
  • Precision less than 5 mm

It is now time to establish a more advanced and more demonstrative clinical study requiring the upstream validation of mechanical and software quality to guarantee the patient’s safety for the health authorities. Our product is the Light Puncture Robot.