Growth stent for congenital narrowings
First Claim
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1. A catheter insertable and re-expandable growth stent for implantation in a neonate patient, comprising:
- an elongated stent frame with a plurality of frame struts each extending continuously from a proximal end region of said stent frame to a distal end region of said stent frame and having a uniform strut width, adjacent frame struts defining intermediate frame cells and intersecting to form respective strut junctions by which said elongated stent frame expands via a delivery catheter from an initial state for facilitating insertion via the delivery catheter into a selected vessel of the neonate patient to a first stable expanded state configured to support the selected vessel at implantation, said stent frame in the first expanded state defining an internal channel with a first cross-section,wherein said stent frame is configured to be re-expanded via subsequent introduction of a dilation catheter from the first expanded state to a second stable expanded state as the patient grows, said stent frame in the second expanded state continuing to support the selected vessel and defining the internal channel with a second cross-section being larger than the first cross-section.
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Abstract
A growth stent and methods for making and using the same. The growth stent may be delivered to treat early stage congenital lesions, while expanding to adult vessel diameters. In selected embodiments, the growth stent can comprise a frame and may have a covering on some portion to prevent blood flow through a wall of the frame. The growth stent advantageously can maintain radial strength across an entire range of diameters necessary to treat a narrowed lesion from birth and childhood through adulthood as the vessels grow over the lifetime of a patient.
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Citations
27 Claims
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1. A catheter insertable and re-expandable growth stent for implantation in a neonate patient, comprising:
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an elongated stent frame with a plurality of frame struts each extending continuously from a proximal end region of said stent frame to a distal end region of said stent frame and having a uniform strut width, adjacent frame struts defining intermediate frame cells and intersecting to form respective strut junctions by which said elongated stent frame expands via a delivery catheter from an initial state for facilitating insertion via the delivery catheter into a selected vessel of the neonate patient to a first stable expanded state configured to support the selected vessel at implantation, said stent frame in the first expanded state defining an internal channel with a first cross-section, wherein said stent frame is configured to be re-expanded via subsequent introduction of a dilation catheter from the first expanded state to a second stable expanded state as the patient grows, said stent frame in the second expanded state continuing to support the selected vessel and defining the internal channel with a second cross-section being larger than the first cross-section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A catheter insertable and re-expandable growth stent for implantation in a neonate patient, comprising:
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an elongated stent frame with a plurality of frame struts each extending continuously from a proximal end region of said stent frame to a distal end region of said stent frame and having a uniform strut width, adjacent frame struts defining intermediate frame cells and intersecting to form respective strut junctions by which said elongated stent frame expands via a delivery catheter from an initial state for facilitating insertion via the delivery catheter into a selected vessel of the neonate patient to a first stable expanded state configured to support the selected vessel at implantation, said stent frame in the first expanded state defining an internal channel with a first cross-section, wherein said stent frame is configured to be re-expanded via subsequent introduction of a dilation catheter from the first expanded state to a second stable expanded state as the patient grows into a teenage patient, said stent frame in the second expanded state being configured to continue to support the selected-vessel and defining the internal channel with a second cross-section being larger than the first cross-section, and wherein said stent frame is further configured to be re-expanded via subsequent introduction of a second dilation catheter from the second expanded state to a third stable expanded state as the teenage patient further grows into an adult patient, said stent frame in the third expanded state being configured to continue to support the selected vessel and defining the internal channel with a third cross-section being larger than the second cross-section. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification