1. A device for introducing into the body through an opening and for removing material from the body, including:! an elongated element, preferably formed of a plurality of hollow segments, connected in series so as to form a working hinge between adjacent segments, where the segments and working hinges are designed so that:! (a) the elongated member adopts an insertion configuration for inserting segments sequentially through a first-size opening into the body； and! (b) a portion of the elongated member inserted into the body gradually adopts a material removal configuration in which the position of each segment relative to the adjacent segment is determined by the working hinge along with additional abutment surfaces defining a fully bent state of the working hinge, where the material removal configuration has at least two size exceeding the specified first size! where each of the at least two segments is formed with at least one cutting configuration deployed so as to collect material into the hollow volume of the segment during the gradual formation of the material removal configuration as the elongated member advances. ! 2. The device according to claim 1, in which the elongated element is essentially straightened when it is in the specified configuration of the introduction. ! 3. The device according to claim 1, in which the elongated element is elastically displaced to achieve the specified configuration of material removal. ! 4. The device according to claim 1, wherein said material removal configuration is configured such that as the elongated element advances, said material removal configuration gradually1. Устройство для введения в тело через отверстие и для удаления материала из тела, включающее: ! удлиненный элемент, образованный предпочтительно из множества полых сегментов, последовательно соединенных так, чтобы образовать рабочий шарнир между соседними сегментами, где сегменты и рабочие шарниры сконструированы таким образом, что: ! (a) удлиненный эле
