| 摘要 |
PURPOSE: A calculus removing device is provided to easily remove a large calculus without damaging a body by arranging a protection unit on a leading end of an injection unit. CONSTITUTION: A calculus removing device comprises an insertion tube(110), a calculus crusher and a protection unit(200). The insertion tube has an internal space. The calculus crusher is arranged on one side of the insertion tube. The protection unit is arranged around the calculus crusher and is comprised of a plurality of wings. The protection unit fixes the calculus crusher to the center of the internal tube and is made of elastic materials. The protection unit includes a plurality of wires and a controller. The wire is inserted into the inner space of the insertion tube in a length direction. The controller is arranged on the other end of the insertion tube to operate a wire.
|
