Ablation catheter with wireless temperature sensor

An ablation catheter system, comprising:

• an ablation catheter configured for insertion into a human body;
• an ablation transducer connected to the catheter and configured to deliver ablative therapy to a target site;
• a wireless temperature sensor configured to sense a temperature at the target site, including:
• at least one temperature sensing element configured to sense a temperature-dependent parameter;
• circuitry configured to measure the sensed parameter and compute the sensed temperature;
• and
• a communication module including a transmitter, the communication module configured for wirelessly transmitting a signal including at least one of the sensed parameter and the computed temperature to an external device;
• at least one power supply configured to supply power to the ablation transducer and the wireless temperature sensor;
• and
• a controller connected to the at least one power supply and configured to control timing of ablative therapy delivery, temperature measurement, and wireless data transmission.

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

• delivering electrical power to an ablation transducer coupled to the ablation catheter from an electrical power supply;
• providing ablation therapy to a target site using the ablation transducer;
• sensing a temperature at or near the target site using at least one temperature sensing element coupled to the ablation catheter;
• and
• wirelessly transmitting a signal using a transmitter connected to the at least one temperature sensing element, the signal including data to identify the temperature sensing element and the sensed temperature.