Catheter with digitized temperature measurement in control handle

摘要

A temperature sensing catheter with improved accuracy is provided. The catheter includes a catheter shaft having a proximal end and a distal end, and a first pair of conductors extending through the catheter shaft. Each one of the first pair of conductors has a first end and a second end, and the first ends of the first pair of conductors are coupled to each other at the distal end of the catheter shaft to form a first thermocouple. A handle is coupled to the proximal end of the catheter shaft and receives the second ends of the first pair of conductors, and the handle includes a digitizing circuit coupled to the second ends of the first pair of conductors for digitizing a voltage signal of the first thermocouple.

主权项

1. A catheter comprising:
a catheter shaft having a proximal end and a distal end; a first pair of conductors extending through the catheter shaft, each one of the first pair of conductors having a first end and a second end, the first ends of the first pair of conductors being coupled to each other at the distal end of the catheter shaft to form a first thermocouple; and a handle coupled to the proximal end of the catheter shaft, the second ends of the first pair of conductors being in the handle, the handle comprising a digitizing circuit therein coupled to the second ends of the first pair of conductors for digitizing a voltage signal of the first thermocouple, the handle further comprising an isothermal block thermally coupled to the second ends of the first pair of conductors, and the digitizing circuit is included in the isothermal block.