Ablation catheter system with wireless radio frequency temperature sensor

An ablation catheter system, comprising:

• an ablation catheter;
• at least one temperature sensitive resonator coupled to the ablation catheter;
• and
• an external device configured to generate a first radio frequency (RF) signal to interrogate the resonator and to receive and decode a second RF signal from the resonator in response to being interrogated, the second RF signal indicative of a temperature sensed by the resonator.

A method of using an ablation catheter, the method comprising:

• delivering electrical power, using an external electrical generator, to the ablation catheter to provide an ablation therapy to a target zone of tissue;
• applying a wireless signal to interrogate a temperature sensitive resonator coupled to the ablation catheter, including:
• exciting the resonator to emit a signal in response to the interrogating signal, wherein a resonance frequency of the response signal is related to the temperature sensed by the resonator;
• and
• determining a temperature for the target zone of tissue using the response signal.