An apparatus that facilitates the creation of circumferential lesions in body tissue. The apparatus includes a first probe having a loop structure that supports electrodes or other operative elements against the body tissue and a second probe with an expandable push structure that may be used to urge...http://www.google.com/patents/US6645199?utm_source=gb-gplus-sharePatent US6645199 - Loop structures for supporting diagnostic and therapeutic elements contact with body tissue and expandable push devices for use with same
