Removable anchored lung volume reduction devices and methods
First Claim
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1. A medical device for treating a lung, the medical device comprising:
- a support structure comprising;
a central support structure having a proximal end and a distal end and an axial centerline; and
a plurality of support members extending in a proximal direction from the central support structure away from the axial centerline of the central support structure, one or more of the plurality of support members having a bent portion on a proximal end of the support member, the bent portion pointing away from the axial centerline; and
an obstructing member comprising a flexible membrane, the obstructing member having a proximal end and a distal end, the proximal end of the obstructing member having cross dimension greater than a cross dimension of the distal end of the obstructing member, at least a portion of the obstructing member overlaying and in contact with at least a portion of the support members;
wherein the medical device functions as a one way valve to permit inspiratory flow of air through an airway while occluding expiratory flow in the airway; and
wherein the proximal end of the central support structure is positioned proximal to the distal end of the obstructing member.
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Abstract
An intra-bronchial device may be placed and anchored in an air passageway of a patient to collapse a lung portion associated with the air passageway. The device includes an obstructing member that prevents air from being inhaled into the lung portion, and an anchor that anchors the obstruction device within the air passageway. The anchor may piercingly engage the air passageway wall. The anchor may be releasable from the air passageway for removal of the obstructing member. The anchor may be releasable by collapsing a portion of the obstructing member, or by drawing the obstructing member toward the larynx. The obstructing member may be a one-way valve.
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Citations
15 Claims
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1. A medical device for treating a lung, the medical device comprising:
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a support structure comprising; a central support structure having a proximal end and a distal end and an axial centerline; and a plurality of support members extending in a proximal direction from the central support structure away from the axial centerline of the central support structure, one or more of the plurality of support members having a bent portion on a proximal end of the support member, the bent portion pointing away from the axial centerline; and an obstructing member comprising a flexible membrane, the obstructing member having a proximal end and a distal end, the proximal end of the obstructing member having cross dimension greater than a cross dimension of the distal end of the obstructing member, at least a portion of the obstructing member overlaying and in contact with at least a portion of the support members;
wherein the medical device functions as a one way valve to permit inspiratory flow of air through an airway while occluding expiratory flow in the airway; and
wherein the proximal end of the central support structure is positioned proximal to the distal end of the obstructing member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An intra-bronchial device comprising:
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a tubular structure having a proximal end, a distal end, and an axial centerline; a plurality of strut arms extending from the proximal end of the tubular structure away from the axial centerline of the tubular structure, each of the plurality of strut arms having a proximal end and a distal end; a membrane in contact with an outer surface of at least a portion of the plurality of strut arms, the membrane having a proximal end and a distal end, the distal end of the membrane attached to the tubular structure, the proximal end of the membrane connected to at least one of the plurality of strut arms; at least one of the plurality of strut arms including an arcuate portion on a proximal end of the at least one strut arm, the arcuate portion including a tip shaped for anchoring the intra-bronchial device relative to an interior lumen wall of a lung airway, the membrane configured to at least partially occlude airflow through the lung airway in at least one direction; and
wherein the proximal end of the tubular structure is positioned proximal to the distal end of the membrane. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification