Belt for prosthetic heart valve
A belt for an implantable prosthetic device can include an annular body including a plurality of alternating peaks and valleys and a plurality of frangible members extending between at least one of adjacent peaks and adjacent valleys. The annular body can be radially expandable from a radially compressed configuration to a first diameter upon application of a radially outwardly directed force via an expandable implantable prosthetic device. A first frangible member of the plurality of frangible members can be configured to break when the radially outwardly directed force exceeds a first predetermined threshold to allow radial expansion of the annular body to a second diameter.
1 . A belt for an implantable prosthetic device, comprising:
an annular body including a plurality of alternating peaks and valleys; and
a plurality of discrete, circumferentially extending frangible members extending between at least one of adjacent peaks and adjacent valleys,
wherein the annular body is radially expandable from a radially compressed configuration to a first diameter upon application of a radially outwardly directed force via an expandable implantable prosthetic device; and
wherein a first frangible member of the plurality of frangible members is configured to break when the radially outwardly directed force exceeds a first predetermined threshold to allow radial expansion of the annular body to a second diameter.
2 . The belt of claim 1 , wherein a second frangible member of the plurality of frangible members is configured to break when the radially outwardly directed force exceeds a second predetermined threshold to allow radial expansion of the annular body to a third diameter.
3 . The belt of claim 1 , wherein the plurality of frangible members comprises wires.
4 . The belt of claim 1 , wherein each frangible member of the plurality of frangible members comprises at least one of a crack or a perforated region.
5 . An assembly, comprising:
an implantable prosthetic device comprising a frame movable between a radially compressed configuration and a radially expanded configuration; and
a belt extending circumferentially around the frame, the belt comprising an annular body including a plurality of alternating peaks and valleys and a plurality of discrete circumferentially extending frangible members extending between at least one of adjacent peaks and adjacent valleys;
wherein the annular body is movable between a radially compressed state and a radially expanded state; and
wherein the belt is configured to radially expand to a first diameter when a first force below a predetermined threshold of force is applied and expand to a second diameter when a second force greater than the predetermined threshold of force is applied.
6 . The assembly of claim 5 , wherein a first frangible member of the plurality of frangible members is configured to break when the second force applied to the belt, allowing the belt to radially expand to the second diameter.
7 . The assembly of claim 6 , wherein the predetermined threshold of force is a first predetermined threshold of force, and wherein a second frangible member is configured to break when a force greater than a second predetermined threshold of force is applied to the belt, allowing the belt to radially expand to a third diameter.
8 . The assembly of claim 7 , wherein the second predetermined threshold of force is equal to the first predetermined threshold of force.
9 . The assembly of claim 6 , wherein the plurality of frangible members comprises wires.
10 . The assembly of claim 6 , wherein each frangible member of the plurality of frangible members comprises at least one of a crack or a perforated region.
11 . The assembly of claim 6 , wherein each frangible member of the plurality of frangible members comprises a strut portion and a thinner portion, the strut portion having a first width and the thinner portion having a second width smaller than the first width.
12 . The assembly of claim 5 , wherein a radial force applied by the prosthetic device can be determined based at least in part on the diameter of the prosthetic device.
13 . The assembly of claim 5 , wherein the prosthetic device is a prosthetic heart valve comprising a plurality of leaflets that regulate a flow of blood through the frame.
14 . An assembly, comprising:
an implantable prosthetic device comprising a frame movable between a radially compressed configuration and a radially expanded configuration; and
a belt extending circumferentially around the frame, the belt configured to radially expand to a first diameter when a first force below a predetermined threshold of force is applied and expand to a second diameter when a second force greater than the predetermined threshold of force is applied;
the belt further comprising an annular body including a plurality of alternating peaks and valleys, the annular body being movable between a radially compressed state and a radially expanded state;
wherein the belt comprises a plurality of frangible members, and wherein a first frangible member of the plurality of frangible members is configured to break when the second force applied to the belt, allowing the belt to radially expand to the second diameter; and
wherein the distance between adjacent peaks of the plurality of alternating peaks and valleys is a first length when the annular body is in the radially compressed state, wherein the distance between adjacent peaks of the plurality of alternating peaks and valleys is a second length when the annular body is in the radially expanded state, and wherein the second length is greater than the first length.