Removable lung reduction devices, systems, and methods

摘要

An air passageway obstruction device includes a frame structure and a flexible membrane overlying the frame structure. The frame structure is collapsible upon advancement of the device into the air passageway, expandable into a rigid structure upon deploying in the air passageway and recollapsible upon removal from the air passageway. The flexible membrane obstructs inhaled air flow into a lung portion communicating with the air passageway. The device may be removed after deployment in an air passageway by recollapsing the device and pulling the device proximally through a catheter.

主权项

1. A device for insertion into a lung airway passage, the device having a proximal end and a distal end and comprising:
a plurality of elongate frame supports configured to transition between a collapsed configuration and an expanded configuration, one or more of the frame supports having:
an anchor portion comprising a piercing portion configured to pierce an airway wall and a bent portion configured to limit a depth to which the piercing portion pierces an airway wall, the piercing portion extending from a bifurcated portion of the anchor portion; anda membrane support portion connected to the anchor portion, the membrane support portion having a convex side and a concave side; a flexible membrane forming a one-way valve and having an axial centerline and overlaying at least a portion of the convex side of the membrane support portion; and a ring member, the anchor portion connected to the ring member and extending from the ring member in a distal direction away from the axial centerline when the elongate frame supports are in the expanded configuration.