Articulable anchor

Claim 1

1 . An implantable device for providing substantially one-way flow of air through a lumen in a human lung to reduce the volume of air trapped in a diseased portion of the lung by occluding the lumen to substantially prevent inhalation while substantially permitting expiration out of said diseased portion of the lung, the implantable device being deployable into the lumen with a catheter, said device comprising: a one-way valve being generally umbrella-shaped in configuration and being collapsible for containment within a catheter and expandable in situ when deployed to substantially occlude the lumen, the valve being configured so that when deployed in an orientation to substantially preclude inhalation, inhaled air is prevented from flowing past the valve into said lung by capturing said air within the umbrella-shaped valve, the air exerting an outward force on the umbrella shape and forcing said valve to tightly engage the lumen, the valve being configured to permit expiration to occur between the perimeter of the valve and the lumen, said valve defining a longitudinal axis and comprising: a plurality of metal struts that define a generally bell-shaped frame, each of the struts having a first end that curves slightly inward towards the longitudinal axis of said implantable device when deployed and a second end proximal a junction of the second ends of the other struts, a resilient membrane that wraps around at least a part of the metal struts and is supported by them, said membrane extending from the junction of the plurality of metal struts toward the first end of said struts, and a central post with a first part that extends within the membrane from the junction of said plurality of metal struts at the center of the bell-shaped frame, the post having a flange at an end distal from the strut junction, said flange being configured to permit deployment, positioning, and recapture of said implantable device, the central post further comprising a second part that extends axially outside the membrane; an anchor for securing said implantable device within said lumen by inhibiting migration of said device once deployed, said anchor comprising a plurality of resilient arms extending outwardly and radially from the second part of the central post, each of said arms being configured so as to be collapsible for containment within a delivery catheter and expandable to engage the lumen when deployed in situ, each of said arms comprising: a generally tapered distal end to permit the arm to penetrate the wall of said lumen, and a planar member proximal the tapered distal end and positioned at an angle to the arm to limit advancement of said arm into the lumen wall by contacting the surface of said lumen wall; and a mechanism connecting the one-way valve to the anchor and being disposed generally along the longitudinal axis when the device is in a collapsed state, the mechanism being configured to permit said valve to be oriented at an angle to said anchor when deployed, thereby allowing said anchor to be positioned in a section of the lumen that is at an angle to a section of said lumen in which said one-way valve is positioned, said mechanism comprising at least one connector at a first end to connect the mechanism to the valve.