ABLATION SYSTEMS AND METHODS USING HEAT SHUNT NETWORKS

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. An ablation device comprising:
an elongate body comprising a distal end; an electrode positioned at the distal end of the elongate body; at least one thermal shunt member placing a heat absorption element in thermal communication with the electrode to selectively remove heat from at least one of the electrode and tissue being treated by the electrode when the electrode is activated; wherein the at least one thermal shunt member extends at least partially through an interior of the electrode to dissipate and remove heat from the electrode during use; and at least one fluid conduit extending at least partially through an interior of the elongate body and at least partially through an interior of the at least one thermal shunt member, wherein the at least one thermal shunt member is in thermal communication with the at least one fluid conduit, the at least one fluid conduit being configured to place the electrode in fluid communication with a fluid source to selectively remove heat from the electrode or tissue.