Sealing device and delivery system
The invention relates to a sealing device for repair of cardiac and vascular defects or tissue opening such as a patent foramen ovale (PFO) or shunt in the heart, the vascular system, etc. and particularly provides an occluder device and trans-catheter occluder delivery system. The sealing device would have improved conformity to heart anatomy and be easily deployed, repositioned, and retrieved at the opening site.
1. A medical device having a first end element, a second end element, and a longitudinal axis extending between the first end element and the second end element, the medical device comprising:
a plurality of wound wires defining a frame, wherein each wound wire of the plurality of wound wires extends from the first end element to the second end element;
a sealing member attached to the frame, the plurality of wound wires and the sealing member defining:
a first disk adjacent the first end element including a first plurality of petals overlapping one another when viewed in a direction along the longitudinal axis in a deployed configuration, and
a second disk adjacent the second end element including a second plurality of petals overlapping one another when viewed in a direction along the longitudinal axis in the deployed configuration,
wherein each of the plurality of wound wires includes an eyelet portion that defines an eyelet of the medical device, wherein each eyelet portion of the plurality of wound wires is concentric with each other about the eyelet, and wherein each petal of the first plurality of petals extends from a corresponding eyelet portion of each eyelet portion of the plurality of wound wires,
wherein each of the first plurality of petals includes a first portion, a second portion, and a third portion with the second portion being arranged between the first portion and the third portion, and the first portion of each of the first plurality of petals overlap a portion of an adjacent one of the first plurality of petals, the third portion of each of the first plurality of petals overlap a portion of an adjacent one of the first plurality of petals, and the second portion of each of the first plurality of petals is non-overlapping an adjacent one of the first plurality of petals, and
wherein the second portion of at least one of the first plurality of petals includes a greater area than at least one of the first portion of the first plurality of petals and the third portion of the first plurality of petals and the second portion of at least one of the second plurality of petals includes a greater area than at least one of the first portion of the second plurality of petals and the third portion of the second plurality of petals.
2. The medical device of claim 1 , wherein an adjacent pair of petals of the first plurality of petals form overlapping zones between the adjacent pair of petals of the first plurality of petals that include two layers of the sealing member and an adjacent pair of petals of the second plurality of petals farm overlapping zones between the adjacent pair of petals of the second plurality of petals that include two layers of the sealing member.
3. The medical device of claim 1 , further including a waist portion disposed between the proximal disk and the distal disk.
4. The medical device of claim 1 , wherein at least one of the first end element and the second end element are formed by portions of the plurality of wound wires.
5. The medical device of claim 4 , wherein the portions of the plurality of wound wires are wound about the longitudinal axis to form at least one of the first end element and the second end element.
6. The medical device of claim 1 , wherein a perimeter of the first disk is substantially circular in the deployed configuration and a perimeter of the second disk is substantially circular in the deployed configuration.
7. The medical device of claim 1 , further comprising an intermediate eyelet formed by portions of the plurality of wound wires wound about the longitudinal axis.
8. A medical device having a longitudinal axis, the medical device comprising:
a frame that includes a plurality of elongate elements that each extends from a first end element to a second end element;
a sealing member attached to the frame, the plurality of elongate elements and the sealing member defining:
a first disk adjacent the first end element including a first plurality of petals overlapping one another when viewed in a direction along the longitudinal axis in a deployed configuration, and
a second disk adjacent the second end element including a second plurality of petals overlapping one another when viewed in a direction along the longitudinal axis in the deployed configuration; and
wherein the first end element is farmed by portions of the plurality of elongate elements converging about the longitudinal axis; and
wherein the second end is element formed by portions of the plurality of elongate elements converging about the longitudinal axis,
wherein each of the plurality of elongate elements includes an eyelet portion that defines an eyelet of the medical device, wherein each eyelet portion of the plurality of elongate elements is concentric with each other about the eyelet, and wherein each petal of the first plurality of petals extends from a corresponding eyelet portion of each eyelet portion of the plurality of elongate elements,
wherein each of the first plurality of petals includes a first portion, a second portion, and a third portion with the second portion being arranged between the first portion and the third portion, and the first portion of each of the first plurality of petals overlap a portion of an adjacent one of the first plurality of petals, the third portion of each of the first plurality of petals overlap a portion of an adjacent one of the first plurality of petals, and the second portion of each of the first plurality of petals is non-overlapping an adjacent one of the first plurality of petals, and
wherein the second portion of at least one of the first plurality of petals includes a greater area than at least one of the first portion of the first plurality of petals and the third portion of the first plurality of petals and the second portion of at least one of the second plurality of petals includes a greater area than at least one of the first portion of the second plurality of petals and the third portion of the second plurality of petals.
9. The medical device of claim 8 , wherein an adjacent pair of petals of the first plurality of petals form overlapping zones between the adjacent pair of petals of the first plurality of petals that include two layers of the sealing member and an adjacent pair of petals of the second plurality of petals form overlapping zones between the adjacent pair of petals of the second plurality of petals that include two layers of the sealing member.
10. The medical device of claim 8 , further including a waist portion disposed between the proximal disk and the distal disk.
11. The medical device of claim 8 , further comprising an intermediate eyelet formed by portions of the plurality of elongate elements wound about the longitudinal axis.
12. The medical device of claim 8 , wherein a perimeter of the first disk is substantially circular in the deployed configuration and a perimeter of the second disk is substantially circular in the deployed configuration.