Electrosurgical system having positional feedback during tissue transversal

An electrosurgical unit for use with a crossing member, the electrosurgical unit comprising:

• a plurality of device terminals including an active terminal and a measurement terminal, the plurality of device terminals configured to couple to the crossing member;
• and
• a controller configured to:
• generate a radiofrequency (RF) energy signal delivery to the active terminal, the RF energy signal configured to cross tissue;
• receive a response to a measurement signal at the measurement terminal;
• determine whether the crossing member has crossed the tissue via a determined change in the response to the measurement signal;
• and
• terminate the RF energy signal based on the determined change in the response to the measurement signal.

An electrosurgical tissue crossing system comprising:

• a plurality of device terminals including an active terminal, a return terminal, and a measurement terminal;
• a crossing member having distal portion including a crossing electrode and a measurement probe;
• the crossing electrode electrically coupled to the active terminal, the measurement probe operably coupled to the measurement terminal;
• a ground pad dispersive electrode electrically coupled to the return terminal;
• and
• a controller configured to:
• generate a radiofrequency (RF) energy signal delivery to the active terminal, the RF energy signal configured to cross tissue;
• generate a measurement signal, the measurement signal configured to be delivered to the measurement probe;
• receive a response to the measurement signal at the measurement terminal, the response from the measurement signal received from the measurement probe;
• determine whether the crossing member has crossed the tissue via a determined change in the response to the measurement signal;
• and
• terminate the RF energy signal based on the determined change in the response to the measurement signal.