PROBLEM TO BE SOLVED: To provide a medical device and a treatment method capable of immediately shutting down or reducing an intraluminal flow in a living body, thereby reducing the burden on a patient.SOLUTION: Provided is a medical device 1 which is inserted into a blood vessel to regulate the flow through the blood vessel, comprising: an annular portion 10 formed annularly by a resiliently deformable wire an accommodation portion 20 which is a tube body receivable of the resiliently deformed annular portion 10, the accommodation portion receiving the annular portion 10 in such a manner that a plane C formed by the annular portion 10 extends in a direction in which the tubular body extends and a pressing shaft 30 insertable into the accommodation portion 20 and pressing out the annular portion 10 received into the accommodation portion 20 from the accommodation portion 20.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】生体管腔内の流れを即時に遮断または低減させて患者への負担を低減できる医療デバイスおよび処置方法を提供する。【解決手段】血管内に挿入されて当該血管内の流れを規制するための医療デバイス1であって、弾性的に変形可能な線材により環状に形成される環状部10と、弾性的に変形させた環状部10を収容可能な管体であり、環状部10が形成する平面Cを当該管体の延在方向に沿わせた状態で環状部10を収容する収容部20と、収容部20内に挿入可能であり、収容部20に収容された環状部10を収容部20から押し出す押圧シャフト30とを有する。【選択図】図1
