Medical device for treating a heart valve insufficiency
A medical device for treating a heart valve insufficiency, with an endoprosthesis which can be introduced into a patient's body and expanded to secure a heart valve prosthesis in the patient's aorta. In an embodiment, the endoprosthesis has a plurality of positioning arches configured to be positioned with respect to a patient's aorta and a plurality of retaining arches to support a heart valve prosthesis. The endoprosthesis includes a first collapsed mode during the process of introducing it into the patient's body and a second expanded mode when it is implanted.
1. An endoprosthesis comprising:
a plurality of first arches configured to be respectively positioned within a plurality of pockets of a native heart valve on a first side of a plurality of native valve leaflets, each first arch having an apex oriented in a first direction and an open end joined to an open end of an adjacent first arch;
a plurality of second arches configured to be positioned on a second side of the plurality of native valve leaflets, such that the plurality of native valve leaflets are positioned radially inward of at least a portion of the plurality of first arches and radially outward of at least a portion of the plurality of second arches when the endoprosthesis is implanted; and
a prosthetic valve attached to the plurality of second arches such that at least part of the prosthetic valve extends from the plurality of second arches transversely across an interior of the endoprosthesis;
wherein the plurality of first arches are self-expandable independently of the plurality of second arches.
2. The endoprosthesis of claim 1 , wherein the plurality of first arches includes exactly three first arches.
3. The endoprosthesis of claim 1 , wherein each first arch of the plurality of first arches has a U-shaped structure.
4. The endoprosthesis of claim 1 , wherein each second arch of the plurality of second arches has a V-shaped structure.
5. The endoprosthesis of claim 1 , wherein the endoprosthesis includes exactly three first arches.
6. The endoprosthesis of claim 1 , wherein the plurality of first arches is connected to the plurality of second arches by a plurality of connecting webs.
7. The endoprosthesis of claim 6 , wherein each connecting web of the plurality of connecting webs is oriented in a longitudinal direction of the endoprosthesis and disposed between two adjacent first arches.
8. The endoprosthesis of claim 6 , wherein the plurality of connecting webs includes exactly three connecting webs.
9. The endoprosthesis of claim 1 , wherein the prosthetic valve is sutured directly to the plurality of second arches.
10. An endoprosthesis comprising:
a plurality of first arches configured to be respectively positioned within a plurality of pockets of a native heart valve on a first side of a plurality of native valve leaflets, each first arch having a U-shaped or V-shaped apex oriented in a first direction and an open end joined to an open end of an adjacent first arch;
a plurality of second arches configured to be positioned on a second side of the plurality of native valve leaflets, such that the plurality of native valve leaflets are positioned radially inward of at least a portion of the plurality of first arches and radially outward of at least a portion of the plurality of second arches when the endoprosthesis is implanted; and
a prosthetic valve attached to the plurality of second arches such that at least part of the prosthetic valve extends from the plurality of second arches transversely across an interior of the endoprosthesis;
wherein the plurality of first arches and the plurality of second arches each comprise a shape memory material, the plurality of first arches being self-expandable independently of the plurality of second arches.
11. The endoprosthesis of claim 10 , wherein the endoprosthesis includes exactly three first arches.
12. The endoprosthesis of claim 10 , wherein the open end of each first arch is joined to an open end of an adjacent first arch at a commis sure region of the endoprosthesis.
13. The endoprosthesis of claim 10 , wherein the plurality of first arches is indirectly connected to the plurality of second arches.
14. The endoprosthesis of claim 13 , wherein the plurality of first arches is connected to the plurality of second arches by three connecting webs.
15. The endoprosthesis of claim 10 , wherein the plurality of second arches includes a pair of second arches having apices spaced apart along a longitudinal direction of the endoprosthesis.
16. The endoprosthesis of claim 15 , wherein the plurality of second arches includes three pairs of second arches having apices spaced apart along a longitudinal direction of the endoprosthesis.
17. An endoprosthesis comprising:
a plurality of first arches configured to be respectively positioned within a plurality of pockets of a native heart valve on a first side of a plurality of native valve leaflets, each first arch having an apex oriented in a first direction and an open end joined to an open end of an adjacent first arch;
a plurality of second arches configured to be positioned on a second side of the plurality of native valve leaflets, such that the plurality of native valve leaflets are positioned radially inward of at least a portion of the plurality of first arches and radially outward of at least a portion of the plurality of second arches when the endoprosthesis is implanted; and
a prosthetic valve sutured to the plurality of second arches such that at least part of the prosthetic valve extends from the plurality of second arches transversely across an interior of the endoprosthesis;
wherein the plurality of first arches is connected to the plurality of second arches by three connecting webs; and
wherein the plurality of first arches are self-expandable independently of the plurality of second arches.
18. The endoprosthesis of claim 17 , wherein each connecting web is oriented in a longitudinal direction of the endoprosthesis and disposed between two adjacent first arches.
19. The endoprosthesis of claim 17 , wherein the apex of each first arch has a U-shaped or V-shaped structure.
20. The endoprosthesis of claim 17 , wherein the plurality of second arches includes a pair of second arches having apices spaced apart along a longitudinal direction of the endoprosthesis.