ANCHOR POSITION VERIFICATION FOR PROSTHETIC CARDIAC VALVE DEVICES
A device for treating a diseased native valve in a patient is provided, the device including a frame structure and a plurality of leaflets. The device can further include a spiral anchor configured to extend around an outer circumference of the frame structure. The anchor can be configured to deliver a contrast agent into or near a target tissue. Other embodiments and methods of use are also provided.
1 . (canceled)
2 . A device for treating a diseased native valve, the device comprising:
a spiral anchor configured to encircle one or more chordae in a subject's heart, the spiral anchor having a lumen disposed therein and one or more ports;
a contrast agent source in fluid communication with the lumen and the one or more ports and being configured to deliver a contrast agent that is detectable by a visualization modality into a blood flow path of the subject's heart.
3 . The device of claim 2 , wherein the spiral anchor is configured to engage with a prosthetic valve device via a compression fit.
4 . The device of claim 2 , further comprising a wall defining the lumen that is an interior wall within an outer perimeter of the spiral anchor.
5 . The device of claim 2 , wherein the lumen is continuous from a proximal end to a distal end of the spiral anchor.
6 . The device of claim 2 , wherein the contrast agent source is disposed within the anchor.
7 . The device of claim 2 , wherein the contrast agent source is remote from the anchor.
8 . The device of claim 7 , wherein a proximal end of the lumen is configured to fluidly couple with a distal end of a contrast agent delivery catheter.
9 . The device of claim 2 , wherein the one or more ports is at a distal tip of the anchor.
10 . The device of claim 2 , wherein the one or more ports is proximal to a distal tip of the anchor.
11 . The device of claim 2 , wherein the one or more ports is oriented toward a leaflet and/or an annulus of the diseased native valve, when the spiral anchor is near a delivery position with respect to the diseased native valve.
12 . The device of claim 11 , wherein the delivery position is a sub-annular space of the diseased native valve.
13 . The device of claim 2 , wherein the contrast agent comprises barium-sulfate, iodine, or an iodine-based material.
14 . A method of delivering a valve prosthesis, comprising:
advancing a distal end of a delivery device to native valve;
rotating a spiral anchor around one or more chordae of the native valve;
delivering a contrast agent through at least one port of the spiral anchor into a blood flow path of the heart; and
obtaining an image of the contrast agent within the heart.
15 . The method of claim 14 , further comprising confirming that the anchor has been rotated around the one or more chordae.
16 . The method of claim 14 , further comprising confirming proper positioning of the spiral anchor based on the image.
17 . The method of claim 14 , further comprising releasing the spiral anchor from the distal end of the delivery device.
18 . The method of claim 14 , wherein the image comprises a fluoroscopic image.