ORIENTATION DETERMINATION BASED ON TEMPERATURE MEASUREMENTS

摘要

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.

主权项

1. A system for determining orientation of a distal tip of an ablation device with respect to tissue, the system comprising:
a hardware processor configured to, upon execution of instructions stored on a computer-readable storage medium:
receive signals indicative of temperature from a first plurality of temperature sensors positioned along and isolated from contact with a distal member of a combination electrode assembly of an ablation device while energy is being delivered by the combination electrode assembly, the combination electrode assembly comprising the distal member and a proximal member spaced apart from the distal member by an electrically-insulating gap;receive signals indicative of temperature from a second plurality of temperature sensors positioned along and isolated from contact with the proximal member of the combination electrode assembly while energy is being delivered by the combination electrode assembly;determine temperature measurements from the signals received from the first plurality of temperature sensors and the second plurality of temperature sensors;determine an orientation of a distal tip of the ablation device with respect to tissue based on processing of the temperature measurements; andgenerate an output indicative of the orientation to be output to a display.