Occlusal stent and methods for its use
First Claim
1. A device for occluding a lung passageway comprising:
- a radially expandable structure extending between a first end and a second end along a longitudinal axis, the structure having a substantially symmetrical cross-section which is expandable to a size wherein at least a portion of the structure contacts a wall of the lung passageway anchoring the device; and
a covering which covers at least a portion of the expandable structure and which defines an exterior surface so that the expanded device occludes the lung passageway, said device having an annular shoulder or grove formed in the exterior surface.
1 Assignment
0 Petitions
Accused Products
Abstract
Improved methods, systems and devices for occluding body passageways, particularly lung passageways. Such occlusion is achieved with occlusal stents which are particularly suited for use in performing Endobronchial Volume Reduction (EVR) in patients suffering from chronic obstructive pulmonary disease or other conditions where isolation of a lung segment or reduction of lung volume is desired. The present invention is likewise suitable for the treatment of bronchopleural fistula and potentially for other pulmonary diseases, such as hemoptysis and pneumothorax. The occlusal stents are delivered with the use of any suitable delivery system, particularly minimally invasive with instruments introduced through the mouth (endotracheally). A target lung tissue segment is isolated from other regions of the lung by deploying an occlusal stent into a target area of a lung passageway. A variety of different occlusal stent designs are provided to improve the performance and reliability of the delivered occlusal stent.
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Citations
49 Claims
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1. A device for occluding a lung passageway comprising:
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a radially expandable structure extending between a first end and a second end along a longitudinal axis, the structure having a substantially symmetrical cross-section which is expandable to a size wherein at least a portion of the structure contacts a wall of the lung passageway anchoring the device; and
a covering which covers at least a portion of the expandable structure and which defines an exterior surface so that the expanded device occludes the lung passageway, said device having an annular shoulder or grove formed in the exterior surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device for occluding a body passageway comprising:
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an expandable structure extending between a first end and a second end along a longitudinal axis, the structure having a substantially square shoulder near the first end configured to anchor the device within the body passageway; and
a covering which covers at least a portion of the expandable structure so that the expanded device occludes the body passageway. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A device for occluding a target area within a body passageway comprising:
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a first portion comprising a radially expandable structure extending between a first end and a second end along a longitudinal axis, the structure having a substantially symmetrical cross-section which is expandable to a size wherein at least a portion of the structure contacts a wall of the body passageway within the target area anchoring the device;
a second portion comprising a radially expandable element which is expandable to a size wherein a least a portion of the element contacts a wall of the body passageway outside of the target area;
a flexible portion extending between the first and second portions; and
a covering which covers at least part of the expandable structure of the first portion so that the first portion occludes the body passageway within the target area. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of occluding a body passageway comprising:
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providing an occlusal stent comprising an expandable structure extending between a first end and a second end along a longitudinal axis, the structure having a substantially square shoulder near the first end, and a covering which covers at least a portion of the expandable structure so that the expanded device occludes the body passageway; and
deploying the occlusal stent within the body passageway so that the substantially square shoulder anchors the occlusal stent within the body passageway. - View Dependent Claims (35, 36)
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37. A method of occluding a branched body passageway comprising:
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providing an occlusal stent comprising an expandable structure extending between a first end and a second end along a longitudinal axis, the structure having at least a first contact length disposed at a distance from the longitudinal axis and a second contact length disposed at a lesser distance from the longitudinal axis, at least the first contact length contacting the body passageway upon expansion of the structure therein, and a covering which covers at least a portion of the expandable structure so that the expanded device occludes the body passageway; and
deploying the occlusal stent within the branched body passageway so that the first contact length is disposed within one branch of the body passageway and the second contact length is disposed within another branch of the body passageway. - View Dependent Claims (38, 39, 40)
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41. A device for occluding a body passageway comprising:
an expandable structure extending between a first end and a second end along a longitudinal axis, the structure having a contact length between the ends and an internal spring biased to draw the first and second ends together to expand the structure and position the contact length against the body passageway. - View Dependent Claims (42, 43)
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44. A device for occluding a body passageway comprising:
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an expandable structure extending between a first end and a second end along a longitudinal axis, the structure having a contact length between the ends positionable against the body passageway upon expansion; and
at least one anchor extending from the structure radially outwardly from the longitudinal axis to contact the body passageway upon expansion and anchor the device therein. - View Dependent Claims (45, 46, 47, 48, 49)
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Specification