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US 10,893,962 B2Granted
Growth stent and valve for congenital narrowings
AssigneeRenata Medical, Inc.
InventorsDustin Armer, Eason Abbott
Life of this patent
Estimating the term…
Abstract
A growth stent and valve and methods for making and using the same. The growth stent and valve may be delivered to treat early stage congenital lesions, while expanding to adult vessel diameters. In selected embodiments, the growth stent and valve 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 and valve 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.
Claims30
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, 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 lumen of the neonate patient to a first stable expanded state being configured to support the selected lumen 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 lumen and defining the internal channel with a second cross-section being larger than the first cross-section.
A method for implanting a catheter insertable and re-expandable growth stent in a neonate patient, comprising:
- inserting an elongated stent frame into a selected lumen of the neonate patient via a delivery catheter, the elongated stent frame being in an initial state for facilitating insertion and having a plurality of frame struts each extending continuously from a proximal end region of the stent frame to a distal end region of the stent frame;
- and
- expanding the elongated stent frame via the delivery catheter from the initial state to a first stable expanded state to support the selected lumen, adjacent frame struts defining intermediate frame cells and intersecting to form respective strut junctions by which the elongated stent frame expands, the stent frame in the first expanded state defining an internal channel with a first cross-section,
- wherein the stent frame is re-expanded via subsequent introduction of a dilation catheter from the first expanded state to a second stable expanded state as the patient grows, the stent frame in the second expanded state continuing to support the selected lumen and defining the internal channel with a second cross-section being larger than the first cross-section.
1 more element
A catheter insertable and re-expandable growth valve for implantation in a neonate patient, comprising:
- an elongated valve frame with a plurality of frame struts each extending continuously from a proximal end region of said valve frame to a distal end region of said valve frame, adjacent frame struts defining intermediate frame cells and intersecting to form respective strut junctions by which said elongated valve frame expands via a delivery catheter from an initial state for facilitating insertion via the delivery catheter into a selected lumen of the neonate patient to a first stable expanded state being configured to support the selected lumen at implantation, said valve frame in the first expanded state defining an internal channel with a first cross-section;
- and
- a plurality of leaflets extending from said valve frame into the internal channel,
- wherein said valve 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 valve frame in the second expanded state continuing to support the selected lumen and defining the internal channel with a second cross-section being larger than the first cross-section, and
- wherein said leaflets provide a valvular function in the first and second expanded states.
2 more elements
A method for implanting a catheter insertable and re-expandable growth valve in a neonate patient, comprising:
- inserting an elongated valve frame into a selected lumen of the neonate patient via a delivery catheter, the elongated valve frame being in an initial state for facilitating insertion and having a plurality of frame struts each extending continuously from a proximal end region of the valve frame to a distal end region of the valve frame;
- and
- expanding the elongated valve frame via the delivery catheter from the initial state to a first stable expanded state to support the selected lumen, adjacent frame struts defining intermediate frame cells and intersecting to form respective strut junctions by which the elongated valve frame expands, the valve frame in the first expanded state defining an internal channel with a first cross-section, a plurality of leaflets extending from said valve frame into the internal channel,
- wherein the valve frame is re-expanded via subsequent introduction of a dilation catheter from the first expanded state to a second stable expanded state as the patient grows, the valve frame in the second expanded state continuing to support the selected lumen and defining the internal channel with a second cross-section being larger than the first cross-section, and
- wherein the leaflets provide a valvular function in the first and second expanded states.
2 more elements
Dependencies are inferred from the claim text.