Device for closing luminal cavity and method therefor

摘要

A luminal cavity closing device can include a flexible shaft, a lid member, and a detachment mechanism. The flexible shaft extends in an axial direction. The lid member which is attached to a distal end of the shaft, can be rotated according to a torque transmitted from the shaft. Thus, a lock section can be thrust into a periphery of an opening of a luminal cavity formed in a living body lumen, to thereby lock the lid member to the periphery. The detachment mechanism can be configured to detachably attach the lid member to the shaft. The torque can be transmitted to the lid member, and the shaft can be detached from the lid member by the detachment mechanism while the lid member is locked to the periphery of the opening of the luminal cavity.

主权项

1. A luminal cavity closing device comprising:
a flexible shaft extending in an axial direction; a lid member attached to a distal end of the shaft, the lid member being rotatable according to a torque transmitted from the shaft, and the lid member including a lock section configured as hooks each having a base part and a sharp part, wherein the hooks are configured to thrust, attendantly on rotation in a first direction, into a periphery of an opening of a luminal cavity formed in a living body lumen, to thereby lock the lid member to the periphery of the opening of the luminal cavity, and wherein the sharp part of each hook is arranged along an outer circumference of the lid member at substantially regular intervals and is oriented in a circumferential direction and in a rotating direction of the lid member, the sharp part of each hook also being pointed in a direction parallel with a tangent to a periphery of the lid member; and a detachment mechanism by which the lid member is detachably attached to the shaft, and through which the torque is transmitted to the lid member during operation of the device, such that the shaft is detachable from the lid member when the lid member is locked to the periphery of the opening of the luminal cavity.