The invention provides devices and methods for use in removing tissue samples from within a patient's body. The devices include instruments having shafts for cutting a path to a tissue mass, and an inflatable balloon or balloons attached to the shaft effective to dilate the path upon inflation in order...http://www.google.com/patents/US7651467?utm_source=gb-gplus-sharePatent US7651467 - Dilation devices and methods for removing tissue specimens
