An investigation was conducted where by the joystick was disassembled upon return.It ws discovered that the joystick had been over-torqued by the user.This over-torquing caused to potentiometer of the joystick to stay out of the dead band and as such, left the joystick in a position that an active voltage was constantly applied keeping the system in a driving mode while the operator was touching the joystick, even if the joystick position was in the dead band zone.Overall, this issue was caused by mis-use of the system.
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While using the corpath grx system for a pci procedure, the physician attempted to advance the guidewire, he noted that the guidewire was responding more than usual.The joystick was moved to the first variable speed level, but the guidewire was moving faster than anticipated.The same issue occured when attempting to rotate the guidewire.Eventually an alarm and error sounded on the control console instructing to "release joystick." the case was converted to a manual procedure and was successfully completed.
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