DIXI Medical

MICRODEEP® micro-macro depth electrodes

The DIXI Medical MICRODEEP® micro-macro depth electrodes are sophisticated medical tools designed for use in neurosurgery, specifically for Stereo-electroencephalography (SEEG) procedures. These electrodes are crucial for accurately locating the source of seizures in patients with drug-resistant epilepsy. Characterized by their small diameter and flexi-rigid structure, they feature both macro-contacts and deployable micro-contacts (tetrodes) at their distal end. This unique design enables clinicians to record both broad and highly detailed, single-unit brain activity, providing invaluable data for pre-surgical evaluation and functional mapping of epileptic foci. It is important to note that these consumables  are intended for clinical research use only.

• Diameter: 0.8 mm
• Platinum / Iridium macro-contacts – 2 mm length
• Micro-contacts consist of tetrodes made of Tungsten with a ~20 micron microwire:
  • Tetrode diameter of 70 microns
  • Micro-contacts deploy as tetrodes up to 2mm in length
• Micro-contacts deploy between macro-contacts 1 & 2 at the distal end of the electrode
• Two electrode output connectors :
  • 1 connector for macro-contact connection (green connector)
  • 9 macro-contacts / 2 tetrodes (8 micro-contacts)
• Active exploration length ranges from 33.2 to 50.8 mm
• Same MICRODEEP® SEEG surgical workflow and implantation tools used with the Micro-Macro Depth Electrode
• Two electrode output connectors :
  • 1 connector for macro-contact connection (green connector)
  • 1 connector for connecting micro-contacts (yellow connector)

Special Features of these Depth Electrodes:

• Dual Recording Capability:
  • They offer both macro and micro recordings, enabling broad and detailed single-unit brain activity analysis.  
  • This is achieved through macro-contacts and deployable micro-contacts (tetrodes).  
• Design and Materials
  • They have a small diameter (0.8 mm).  
  • They are multi-contact and flexi-rigid.  
  • They utilize platinum/iridium contacts. 
• Applications
  • They are designed for Stereo-electroencephalography (SEEG) exploration.  
  • They are used for functional mapping of epileptic foci.  
  • they are designed to help locate the source of seizures in patients with drug resistant epilepsy.
• Variations:
  • They come in various configurations with different numbers of macro and micro-contacts.  
  • They have varing active exploration lengths.  
• Cable Connection
  • They utilize a dual-tail cable connection.

Cortical Electrodes IOM for Intraoperative Monitoring and Stimulation.

• Contact diameter 4 mm
• Distance between the contacts: 10 mm
• Thickness: <0.8 mm
• Contacts made of stainless steel
• Dome-shaped contacts to improve adherence
• Pre-cut grid to adapt to the areas to explore
• Width of strips: 10 mm
• Thin and flexible
• Numbered contacts
• Touch-Proof connectors (DIN 42802)

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