Radio-frequency based catheter system for ablation of body tissues

A for excising patient body solidly tissue's biological improvement's radiofrequency channels, comprising a sleeve pipe (3); and sleeve pipe tail can extend out the antenna guide (36), wherein one of the antenna guide on radiofrequency (“RF”) antenna (54). The RF antenna the antenna guide axial duct comprises, and is suitable for the receiver and transmitting for RF energy according organizing to excise. When the telescopic; the antenna guide by a ring structure, the ring structure is arranged on the body is cylindrical forming a case body is solidly contact, the first cavity of the cylindrical body how movement, which can be in precise and a tissue excision path. The antenna guide wherein the RF antenna of a tissue excision with a poke. Are not transparent for radiating mark and electrode along the surface of said guide is wound with an aimed with the hope tissue excision path. Of claims to the guide tube and a antenna for guiding through the body organ face guide or the deflection mechanism. The invention further claims an elevation with RF is a hollow is coaxial.