1. A system for performing a cross section of soft tissue located inside a body, comprising: a flexible, formed as a thread cutting member having a substantially smooth surface, and a device for laying path having a shape which facilitates its entry into the body in proximity to said soft tissue and rerouting constructed as a thread cutting member around the soft tissue so that both ends of said cutting member extends outwardly from one inlet opening in said tele.2. The system of claim. 1, comprising, in addition, the image forming device capable of visually displaying said means for routing within said body about said soft tkani.3. The system of claim. 2, wherein the imaging device includes an ultrasound generating device izobrazheniya.4. The system of claim. 1, wherein said cutting member has a diameter smaller than 1.0 mm.5. The system of claim. 1, in which said cutting element has zero radius izgiba.6. The system of claim. 1, in which said cutting element has a bend radius of less than about half the thickness of said soft tkani.7. The system of claim. 1, in which Me at one end of said cutting element has a rigid uchastok.8. The system of claim. 1, wherein said cutting member has a strength at break greater than 2 funta.9. The system of claim. 1, wherein said cutting member has a braided or twisted structure, or comprises monovolokno.10. The system of claim. 1, comprising a further power tool for driving all of said cutting element Poper1. Система для выполнения поперечного разреза мягкой ткани, находящейся внутри тела, включающая:гибкий, выполненный в виде нити режущий элемент, имеющий по существу гладкую поверхность, иустройство для прокладывания маршрута, имеющее форму, облегчающую его вхождение в тело в непосредственной близости к указанной мягкой ткани и прокладывание маршрута выполненного в виде нити режущего элемента вокруг мягкой ткани таким образом, чтобы оба конца указанного режущего элемента выходили наружу из одного входного отверстия в указанном тел
