Electrosurgical device with automatic shut-off

An assembly to create a puncture in a tissue, comprising:

• a puncturing device comprising an elongate member having a distal tip configured to deliver energy to the tissue, creating the puncture;
• the puncturing device further comprises a first element positioned along the elongate member;
• a dilator wherein the dilator comprises a lumen extending from a proximal portion to a distal portion and configured to receive the puncturing device;
• and,
• the dilator further comprises a second element positioned along a length of the dilator;
• wherein:
• one of the first element and the second element is configured to send a signal to a generator when the first element and the second element are aligned, the signal being configured to enable energy delivery from the generator to the distal tip of the puncturing device;
• and
• absence of the signal disables energy delivery from the generator to the distal tip of the puncturing device.