INTRACELOM EXPANSION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an intracelom expansion apparatus which has power and flexibility for press-expanding the inside of the celom by self-expanding when it is inserted to the inside of the celom, and which is easy to position by reducing variation in its longitudinal direction when reducing an outer diameter thereof when it is inserted to the inside of the celom.

SOLUTION: This apparatus is provided with: cylindrical bodies 3 where first and second wire spiral parts 201 and 203 provided in directions crossing each other are periodically replaced to the inside and outside at an intersection 6; and longitudinal wire parts 4 which are provided between the cylindrical bodies 3 and where first and second wire longitudinal parts 202 and 204 are formed along the longitudinal direction. When the cylindrical bodies 3 are contracted in a peripheral direction, restoring force is stored at the first and second wire spiral parts 201 and 203. When the cylindrical bodies 3 are released inside of the celom, the celom can be pressed and expanded.

COPYRIGHT: (C)2004,JPO