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1. (WO2018089618) OPPOSING DISK DEVICE FOR GRASPING CARDIAC VALVE TISSUE
Nota: Texto obtenido mediante procedimiento automático de reconocimiento óptico de caracteres.
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CLAIMS

What is claimed is:

1. A method for repairing a targeted cardiac valve, the method comprising:

positioning a repair device at a targeted cardiac valve, the repair device being moveable between a collapsed configuration and an expanded configuration, the repair device including:

a proximal disk element;

a distal disk element spaced apart from the proximal disk element so as to define a grasping space therebetween for grasping cardiac valve tissue; and

a neck section joining the proximal disk element and the distal disk element, the neck section having a diameter that is smaller than a diameter of the proximal disk element and the distal disk element;

deploying the distal disk element on a first side of targeted cardiac valve tissue to move the distal disk element from the collapsed configuration to the expanded configuration; and

deploying the proximal disk element on a second side of the targeted cardiac valve tissue to move the proximal disk element from the collapsed configuration to the expanded configuration so as to grasp the cardiac valve tissue between the deployed distal disk element and the deployed proximal disk element.

2. The method of claim 1 , wherein the targeted cardiac valve is a tricuspid valve, and wherein the targeted cardiac valve tissue includes the leaflets of the tricuspid valve.

3. The method of claim 2, wherein deployment of the proximal disk simultaneously captures the three leaflets of the tricuspid valve between the proximal disk element and the distal disk element.

4. The method of claim 2, wherein the grasping space is sized and shaped to conform to an anatomical shape of the targeted tricuspid valve leaflets.

5. The method of claim 2, wherein the distal disk element is deployed on a ventricular side of the targeted tricuspid valve, and wherein the proximal disk element is deployed on an atrial side of the targeted tricuspid valve.

6. The method of claim 1, wherein the repair device includes a plurality of grip elements configured to enhance engagement of the repair device with the targeted cardiac valve tissue upon deployment of the repair device.

7. The method of claim 1, wherein the repair device is delivered to the targeted cardiac valve through a transjugular approach.

8. The method of claim 1, wherein prior to deployment, the distal disk element and the proximal disk element are maintained in the collapsed configuration by a sheath, and wherein the distal disk element and the proximal disk element are moved to respective expanded configurations by unsheathing the distal section and the proximal section.

9. The method of claim 1, wherein the neck section is part of a central shaft to which the proximal disk element and distal disk element are attached, the proximal disk element being segmented into three separate proximal grasping elements and the distal disk element being segmented into three separate distal grasping elements.

10. The method of claim 9, wherein the proximal and distal grasping elements are operatively coupled to an actuator rod translatably disposed within the central shaft such that translation of the actuator rod moves the grasping elements between the collapsed configuration and the expanded configuration.

11. The method of claim 10, further comprising locking the proximal disk element and the distal disk element in the deployed configuration using a locking mechanism, the locking mechanism including a locking plate, the locking plate including an aperture through which the actuator rod passes, and the locking plate being adjustable between an angled configuration that binds the locking plate against the actuator rod and prevents translation of the actuator rod and a more perpendicular configuration that allows translation of the actuator rod.

12. An interventional device configured for repair of a regurgitant tricuspid valve, the repair device comprising:

a proximal disk element movable between a collapsed configuration and an expanded configuration;

a distal disk element moveable between a collapsed configuration and an expanded configuration, the distal disk element being spaced apart from the proximal disk so as to define a grasping space therebetween for grasping tricuspid valve leaflets when the proximal disk element and the distal disk element are in expanded configurations and are deployed at a tricuspid valve; and

a neck section joining the proximal disk element and the distal disk element, the neck section having a diameter that is smaller than a diameter of the proximal disk element and the distal disk element.

13. The interventional device of claim 12, wherein the distal disk element and the proximal disk element are formed at least in part from a self-expanding structure such that the disk elements are maintained in collapsed configurations when constrained but move to the expanded configurations when not constrained.

14. The interventional device of claim 13, wherein the device is formed at least partly of a wireframe nitinol structure.

15. The interventional device of claim 12, wherein the neck section is part of a central shaft to which the proximal disk element and distal disk element are attached, the proximal disk element being segmented into three separate proximal grasping elements and the distal disk element being segmented into three separate distal grasping elements.

16. The interventional device of claim 15, wherein the proximal and distal grasping elements are operatively coupled to an actuator rod translatably disposed within the central shaft such that translation of the actuator rod moves the grasping elements between the collapsed configuration and the expanded configuration.

17. The interventional device of claim 16, further comprising a locking plate configured to selectively bind against the actuator rod to prevent translation of the actuator rod.

18. An interventional system configured for repair of a regurgitant tricuspid valve, the repair system comprising:

a delivery system, including:

a sheath;

a delivery catheter disposed within the sheath so as to be translatable within the sheath, the delivery catheter including a connection element disposed at a distal end of the delivery catheter; and

an interventional device, including:

a connection element configured to engage with the connection element of the delivery catheter to detachably couple the interventional device to the delivery catheter;

a proximal disk element movable between a collapsed configuration and an expanded configuration; and

a distal disk element moveable between a collapsed configuration and an expanded configuration, the distal disk element being spaced apart from the proximal disk so as to define a grasping space therebetween for grasping tricuspid valve leaflets when the proximal disk element and the distal disk element are in expanded configurations and are deployed at a tricuspid valve,

wherein the sheath is configured to be retractable relative to the delivery catheter to expose the interventional device and enable the distal disk element and the proximal disk element to move toward the expanded configuration.

19. The interventional system of claim 18, wherein the proximal and distal disk elements are self-expandable such that when housed within the sheath the proximal and distal disk elements are constrained to the collapsed configuration and such that the proximal and distal disk elements self-expand upon retraction of the sheath relative to the interventional device.

20. The interventional system of claim 18, wherein the interventional device further includes a central shaft to which the proximal disk element and distal disk element are attached, the proximal disk element being segmented into three separate proximal grasping elements and the distal disk element being segmented into three separate distal grasping elements.