Bronchial Isolation Devices for Placement in Short Lumens
First Claim
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1. A flow control device for a bronchial passageway, comprising:
- a valve member that regulates fluid flow through the flow control device;
a frame coupled to the valve member, the frame including;
(a) a distal retainer region being formed of a plurality of interconnected struts configured to engage an interior wall of the bronchial passageway to retain the flow control device in a fixed location therein, the retainer region being movable from a contracted state suitable for introduction into the bronchial passageway to an expanded state suitable for engaging the interior wall of the bronchial passageway; and
(b) at least one stabilization structure having a tip that extends distally past a distal edge of the distal retainer region, the stabilization structure sized and shaped to achieve stabilization of the position of the device in the bronchial passageway, wherein the stabilization structures rest against and do penetrate the bronchial wall; and
a membrane covering at least a portion of the retainer region, wherein at least a portion of the flow control device forms a seal with the interior wall of the bronchial passageway when the flow control device is implanted in the bronchial passageway.
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Abstract
Methods and devices are adapted for regulating fluid flow to and from a region of a patient'"'"'s lung, such as to achieve a desired fluid flow dynamic to a lung region during respiration and/or to induce collapse in one or more lung regions. Pursuant to an exemplary procedure, an identified region of the lung is targeted for treatment. The targeted lung region is then bronchially isolated to regulate airflow into and/or out of the targeted lung region through one or more bronchial passageways that feed air to the targeted lung region.
134 Citations
21 Claims
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1. A flow control device for a bronchial passageway, comprising:
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a valve member that regulates fluid flow through the flow control device;
a frame coupled to the valve member, the frame including;
(a) a distal retainer region being formed of a plurality of interconnected struts configured to engage an interior wall of the bronchial passageway to retain the flow control device in a fixed location therein, the retainer region being movable from a contracted state suitable for introduction into the bronchial passageway to an expanded state suitable for engaging the interior wall of the bronchial passageway; and
(b) at least one stabilization structure having a tip that extends distally past a distal edge of the distal retainer region, the stabilization structure sized and shaped to achieve stabilization of the position of the device in the bronchial passageway, wherein the stabilization structures rest against and do penetrate the bronchial wall; and
a membrane covering at least a portion of the retainer region, wherein at least a portion of the flow control device forms a seal with the interior wall of the bronchial passageway when the flow control device is implanted in the bronchial passageway. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A flow control device for a bronchial passageway, comprising:
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a valve member that regulates fluid flow through the flow control device;
a frame coupled to the valve member, the frame including;
(a) a distal retainer region formed of a plurality of interconnected struts configured to engage an interior wall of the bronchial passageway to retain the flow control device in a fixed location therein, the retainer region being movable from a contracted state suitable for introduction into the bronchial passageway to an expanded state suitable for engaging the interior wall of the bronchial passageway, wherein the distal retainer region includes an elongated section that is sufficiently long to extend into a distal bronchial passageway that branches from a bronchial passageway in which the device is implanted; and
a membrane covering at least a portion of the distal retainer region not including the elongate section, wherein at least a portion of the flow control device forms a seal with the interior wall of the bronchial passageway when the flow control device is implanted in the bronchial passageway. - View Dependent Claims (8, 9, 10)
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11. A method of implanting a fluid flow control device in a bronchial passageway, comprising:
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providing a flow control device having a valve, a retainer, and a seal; and
implanting the flow control device in a bronchial passageway such that a proximal portion of the retainer anchors against a wall of a first bronchial passageway and a distal portion of the retainer is positioned in a second bronchial passageway that branches from the first bronchial passageway, wherein the seal covers only the proximal portion of the bronchial passageway. - View Dependent Claims (12)
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13. A flow control device for a bronchial passageway, comprising:
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a frame having a first end and a second end, the frame defining an internal lumen having a first opening at the first end and a second opening at the second end that both communicate with the lumen;
a seal covering at least a portion of the frame; and
a valve positioned on the frame between the first end and the second end, wherein the valve regulates fluid flow into the lumen at a location between the first end and the second end. - View Dependent Claims (14, 15)
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16. A flow control device for a bronchial passageway, comprising:
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a first frame adapted to anchor against a wall of a first bronchial passageway, the first frame defining a lumen through which fluid can flow;
a seal member coupled to the first frame and adapted to seal against the first bronchial passageway;
valve member that regulates fluid flow through the lumen, the valve member coupled to the first frame;
a second frame adapted to anchor against a wall of a second bronchial passageway; and
a tether connecting the first frame to the second frame. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification