MEDICAL DEVICE AND TREATMENT METHOD

摘要

A medical device is disclosed for restricting a flow in a body lumen by being inserted into the body lumen. The medical device including an elongated shaft part; an expansion part which is a tubular body having a plurality of gaps and elastically deformable, with the shaft part being connected to at least one of both side end portions of the tubular body; a cover part which is flexibly deformable independently from the expansion part while surrounding an outer circumference of the expansion part, which is tubular in shape, both end portions of the tubular shape being connected to both end portions of the expansion part; and a sheath in which the expansion part and the cover part both contracted in diameter can be accommodated.

主权项

1. A medical device for restricting a flow in a body lumen by being inserted into the body lumen, the medical device comprising:
an elongated shaft part; an expansion part which is a tubular body having a plurality of gaps and elastically deformable, an outside diameter of the tubular body being greater at a central portion than at both side end portions of the tubular body in a natural state where no external force is acting, with the shaft part being connected to at least one of the both side end portions of the tubular body; a cover part which is flexibly deformable independently from the expansion part while surrounding an outer circumference of the expansion part, which is tubular in shape, both end portions of the tubular shape being connected to both end portions of the expansion part, and which is capable of forming an overlapping part overlapping by being folded back in an axial direction such that inner surface portions of the tubular shape contact each other when the expansion part is expanded; and a sheath in which the expansion part and the cover part both contracted in diameter are accommodated.