An ablating device has a cover which holds an interface material such as a gel. The cover contains the interface material during initial placement of the device. The ablating device may also have a removable tip or a membrane filled with fluid. In still another aspect, the ablating device may be submerged...http://www.google.fr/patents/US6689128?utm_source=gb-gplus-shareBrevet US6689128 - Methods and devices for ablation
