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Microelectrode Recording

Using the NEXDRIVE by ign

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Microelectrode Recording

• Adjust NEXDRIVE base• Assemble the NEXDRIVE• Insert the cannulae• Insert the microelectrode• Additional tracks:

– Perform a parallel track

– Using the offset positioner

• Place the DBS lead

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Adjust NEXDRIVE base

• Loosen locking screws• Adjust Z-stage to set

drive to target depth reported by IGS

• Tighten locking screws

Loosen

Loosen

Lock

Lock

Turn

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NEXDRIVE Assembly

• Remove alignment adapter

• Insert Center multi-lumen insert

• Attach micro-drive

Note: be sure drive is set to starting depth

Multi-lumen Insert

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Cannulae insertion

• Insert stylet through passing cannula

• Attach collet to passing cannula

• Pass cannula/collet combo into drive

• Remove Stylet• Insert microelectrode

cannulaNote: be sure drive is set to starting depth

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Microelectrode insertion

• Retract microelectrode within sheath

• Pass microelectrode through cannula

• Advance electrode• Connect recording

system cables

Note: be sure drive is set to starting depth

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Microelectrode Recording

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Parallel Tracts

• Retract drive to starting point

• Retract and remove microelectrode & collet

• Remove cannula & re-insert through offset

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Offset Positioner

• Retract drive to starting point• Remove microelectrode• Remove cannulae• Remove drive and drive base• Remove center multi-lumen insert• Choose direction for offset• Insert offset positioner• Re-assemble drive and cannula

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Possible Tracks

Center Positioner

3mm offset at “B”3mm

offset at “G”

Center Positioner

at 45°

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Lead Placement

• Set drive to desired target depth

• Remove microelectrode and spacer cannula

• Calibrate lead with calibration tube

• Remove calibration tube and insert lead