PROSTHETIC CARDIAC VALVE DELIVERY SYSTEMS AND METHODS
A method for treating a diseased native valve in a patient includes 5 advancing a distal end of a delivery device to a first side of a native valve, deploying an anchor from a delivery configuration to a deployed configuration on the first side of the native valve, and rotating the distal end of the delivery device so as to simultaneously extend the anchor in the deployed configuration through the native valve from the first side to a second side of the native valve and 10 rotate the anchor in the deployed configuration around native chordae.
1 . A method for treating a diseased native valve in a patient, the method comprising:
advancing a distal end of a delivery device to a first side of a native valve;
deploying an anchor from a delivery configuration to a deployed configuration on the first side of the native valve; and
rotating the distal end of the delivery device so as to simultaneously extend the anchor in the deployed configuration through the native valve from the first side to a second side of the native valve and rotate the anchor in the deployed configuration around native chordae.
2 . The method of claim 1 , wherein the distal end of the delivery device comprises an anchor guide having a preset curvature, and wherein the step of rotating comprises rotating the anchor guide relative to an outer sheath of the delivery device.
3 . The method of claim 2 , wherein the anchor guide is configured to place torsion on the anchor as the anchor transitions from the delivery configuration to the deployed configuration.
4 . The method of claim 1 , wherein deploying the anchor comprises deploying the anchor concentrically about the delivery device.
5 . The method of claim 1 , wherein rotating the distal end comprises rotating the anchor concentrically around the delivery device.
6 . The method of claim 1 , wherein the anchor comprises a flat spiral in the deployed configuration.
7 . The method of claim 6 , further comprising aligning a plane of the flat spiral such that it is parallel with a plane of the mitral valve prior to the step of rotating the distal end.
8 . The method of claim 7 , wherein the step of aligning is performed by steering an outer sheath of the delivery device.
9 . The method of claim 7 , wherein the step of aligning is performed by translating or rotating an anchor guide of the delivery device, the anchor guide having a preset curvature.
10 . The method of claim 1 , wherein the anchor is substantially straight within the delivery device in the delivery configuration.
11 . The method of claim 1 , further comprising expanding a valve prosthesis within the anchor when the anchor is in the deployed configuration around the native chordae.
12 . The method of claim 11 , wherein expanding the valve prosthesis comprises expanding the valve prosthesis such that a first end extends on the first side of the native valve and a second end extends on the second side of the native valve.
13 . The method of claim 1 , wherein the native valve is a mitral valve, the first side of the native valve comprises a left atrium, and the second side of the native valve comprises a left ventricle.
14 . The method of claim 1 , further comprising transeptally inserting the distal end of the delivery device into a left atrium of the heart.
15 . The method of claim 1 , wherein deploying the anchor comprises pushing the anchor out of the delivery device.
16 . The method of claim 1 , further comprising releasing the anchor from the delivery device after an entirety of the anchor is on the second side of the valve and not on the first side of the valve.
17 . The method of claim 1 , further comprising extending a distal tip of the anchor through the valve at a commissure prior to the step of rotating the distal end.
18 . The method of claim 1 , further comprising confirming a position of the anchor with fluoroscopy or echocardiography.
19 . The method of claim 1 , wherein the delivery device comprises a steerable outer sheath, the method further comprising directing the distal end to a desired position with the steerable outer sheath.
20 . The method of claim 1 , further comprising translating the distal end of the delivery device towards the second side after the step of deploying and before the step of rotating.
21 . (canceled)