Thermotherapy with metallic stent excited by the magnetic field

Stents are one method of treatment for stenosis of lumens organ from various causes. The cylindrical metallic stents are composed of alloy wire. After stents are implanted, however, the stenosis may recur due to a tumor or abscess again. It is particularly difficult to remove tumors or abscesses of the bile duct by surgical repair, because the duct is in a deep portion of the abdomen. We propose a noninvasive remedying method for tumors and abscesses by using thermotherapy with magnetically excited metallic stents. Currently, clinical stents are not manufactured to allow for heating. In this paper, we made experimental stents by magnetic shunt steel to heat the stents and control the heat of stents by external magnetic excitation for thermotherapeutic applications.