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US 11,534,319 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 an infantile patient, comprising:
- a 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 stent frame expands via a delivery catheter from an initial cross-section that is less than eight French for facilitating insertion via the delivery catheter into a selected lumen of the infantile patient to a first stable expanded state being configured to support the selected lumen at implantation, said stent frame in the first stable 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 stable expanded state to a second stable expanded state as the infantile patient grows, said stent frame in the second stable 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 catheter insertable and re-expandable growth valve for implantation in an infantile patient, comprising:
- a 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 valve frame expands via a delivery catheter from an initial cross-section that is less than eight French for facilitating insertion via the delivery catheter into a selected lumen of the infantile patient to a first stable expanded state being configured to support the selected lumen at implantation, said valve frame in the first stable 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 stable expanded state to a second stable expanded state as the infantile patient grows, said valve frame in the second stable 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 method for implanting a catheter insertable and re-expandable growth stent in an infantile patient, comprising:
- inserting a stent frame into a selected lumen of the infantile patient via a delivery catheter, the stent frame being in an initial cross-section that is less than eight French 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 stent frame via the delivery catheter from the initial cross-section 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 stent frame expands, the stent frame in the first stable expanded state defining an internal channel with a first cross-section,
- wherein the stent frame is configured to be re-expanded via subsequent introduction of a dilation catheter from the first stable expanded state to a second stable expanded state as the infantile patient grows, the stent frame in the second stable 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 method for manufacturing a catheter insertable and re-expandable growth stent for implantation in an infantile patient, comprising:
- forming a stent frame 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 being in an initial cross-section that is less than eight French for facilitating insertion into a selected lumen of the infantile patient via a delivery catheter,
- wherein the stent frame is expandable via the delivery catheter from the initial cross-section 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 stent frame expands, the stent frame in the first stable expanded state defining an internal channel with a first cross-section, and
- wherein the stent frame is re-expandable via subsequent introduction of a dilation catheter from the first stable expanded state to a second stable expanded state as the infantile patient grows, the stent frame in the second stable 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.
Dependencies are inferred from the claim text.