IN-SITU FENESTRATION DEVICES WITH PROTECTIVE MEMBERS

原文（中文）

An in-situ fenestration device. The device includes an outer sheath extending along a longitudinal axis, an inner shaft extending within the outer sheath, and an inner sheath extending within the inner shaft. The inner shaft is retractable relative to the inner shaft from a delivery state in which a first protective member is in a constrained state to a deployment state in which the first protective member is in a deployment state. The inner shaft is extendable relative to the outer sheath from a delivery state in which a second protective member is in a constrained state to a deployment state in which the second protective member is in a deployment state. The device further includes a cutting mechanism configured to cut a fenestration in a graft material at a fenestration site of a stent graft between the first and second protective members.