Devices and methods for stenting an airway
First Claim
1. An airway stent, comprising:
- a proximal region having a cylindrical shape with a first opening at a proximal end, the first opening having a diameter equivalent to a diameter of the proximal region of the airway stent;
a distal region extending from the proximal region to a second opening at a distal end, the distal region flaring outward such that the second opening has a transverse cross-section with an elliptical shape having a lateral diameter that is larger than an anteroposterior diameter, wherein a distal edge of the distal region includes a first notch at an anterior side and a second notch at a posterior side, wherein the first and second notches are configured to engage a cartilaginous ridge that runs anteroposteriorly between branches of an airway at a target bifurcation junction; and
a non-bifurcated single lumen that extends from the first opening and through the proximal and distal regions to the second opening.
3 Assignments
0 Petitions
Accused Products
Abstract
An implantable device and method are disclosed for stenting an occlusion of an airway. The implantable device includes a cylindrical tube shaped proximal region, a flared distal region, and a non-bifurcated single lumen extending through the device. The proximal region defines a proximal portion of the lumen and the distal region defines a distal portion of the lumen. The distal region may flare outward laterally at a first angle and anteroposterior at a second angle, thereby forming an elliptically shaped distal opening to the lumen. The distal edge of distal opening may lie entirely in a plane orthogonal to a longitudinal axis of the device. Alternatively, the distal edge may be non-planar, such as concave or convex, when viewed in an anteroposterior direction. The implantable device may be formed of a scaffolding structure.
45 Citations
18 Claims
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1. An airway stent, comprising:
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a proximal region having a cylindrical shape with a first opening at a proximal end, the first opening having a diameter equivalent to a diameter of the proximal region of the airway stent; a distal region extending from the proximal region to a second opening at a distal end, the distal region flaring outward such that the second opening has a transverse cross-section with an elliptical shape having a lateral diameter that is larger than an anteroposterior diameter, wherein a distal edge of the distal region includes a first notch at an anterior side and a second notch at a posterior side, wherein the first and second notches are configured to engage a cartilaginous ridge that runs anteroposteriorly between branches of an airway at a target bifurcation junction; and a non-bifurcated single lumen that extends from the first opening and through the proximal and distal regions to the second opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implantable device to stent an airway at a bifurcation junction, the implantable device comprising:
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a proximal region having a cylindrical hollow tube shape defining a proximal portion of a non-bifurcated single lumen through the implantable device, the non-bifurcated single lumen extending axially along a longitudinal axis of the implantable device from a first opening at a proximal end of the implantable device to a second opening at a distal end of the implantable device; a distal region disposed at and extending from a distal end of the proximal region, the distal region flaring distally and outwardly from the proximal region to the second opening to define a distal portion of the non-bifurcated single lumen through the implantable device and to enlarge one or more diameters of the non-bifurcated single lumen at the second opening at the distal end of the implantable device, wherein a distal edge of the distal region includes a first notch at an anterior side and a second notch at a posterior side, wherein the first and second notches are configured to engage a cartilaginous ridge that runs anteroposteriorly between branches of an airway at a target bifurcation junction; wherein the second opening of the non-bifurcated single lumen of the implantable device, at the distal end of the distal region, has a transverse cross-section with an elliptical shape having a first diameter and a second diameter transverse to the first diameter, the first diameter being larger than the second diameter, larger than a diameter of the first opening at the proximal end of the implantable device, and larger than a diameter of a transverse cross-section of the non-bifurcated single lumen at a proximal end of the distal region and at the distal end of the proximal region. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification