Mitral valve inversion prostheses
Systems, devices and methods for resizing a valve annulus are described. An implant is delivered proximate a mitral valve, the implant comprising a tubular body and a plurality of piercing helical anchors, the tubular body comprising an proximal diameter and a distal diameter. Tissue proximate the mitral valve is engaged by rotating the plurality of anchors with corresponding rotational drivers. The tubular body may be transitioned from a first structural configuration having the proximal diameter smaller than the distal diameter to a second structural configuration having the proximal diameter larger than the distal diameter.
1. A method for reshaping a heart valve annulus, the method comprising:
positioning a distal end of a delivery catheter in an atrium of a heart, the delivery catheter including an implant for reshaping the heart valve annulus;
deploying the implant from the delivery catheter to a location proximate the heart valve annulus in the atrium;
transitioning the implant from a first structural configuration to a second structural configuration, the first structural configuration having the proximal diameter smaller than the distal diameter and the second structural configuration having the proximal diameter larger than the distal diameter, thereby reshaping the heart valve annulus;
inserting and positioning a location ring proximate the heart valve within a ventricle of the heart opposite the atrium; and
visualizing the location ring to assist with positioning the implant.
2. A method for reshaping a heart valve annulus, the method comprising:
positioning a distal end of a delivery catheter in an atrium of a heart, the delivery catheter including a plurality of rotatable drivers and an implant for reshaping the heart valve annulus, the implant comprising a tubular body and a plurality of helical anchors, the tubular body comprising a proximal diameter and a distal diameter, and the helical anchors coupled with the distal diameter and configured to be advanced distally therefrom;
deploying the implant from the delivery catheter to a location proximate the heart valve annulus in the atrium;
rotating the plurality of helical anchors with the plurality of rotatable drivers to advance the plurality of helical anchors distally relative to the tubular body and toward the heart valve annulus;
engaging the heart valve annulus with the plurality of helical anchors to anchor the implant to the heart valve annulus;
transitioning the tubular body from a first structural configuration to a second structural configuration, the first structural configuration having the proximal diameter smaller than the distal diameter and the second structural configuration having the proximal diameter larger than the distal diameter, thereby reshaping the heart valve annulus;
inserting and positioning a location ring proximate the heart valve within a ventricle of the heart opposite the atrium; and
visualizing the location ring to assist with positioning the implant.
3. The method of claim 2 , further comprising removing the location ring from the heart.
4. The method of claim 2 , further comprising coupling at least one of the helical anchors with the location ring by extending the at least one of the helical anchors through the heart valve annulus to connect the at least one of the helical anchors with the location ring.
5. The method of claim 2 , further comprising advancing the plurality of helical anchors distally through a series of holes formed in distal apices of the distal diameter of the tubular body.
6. The method of claim 2 , wherein the atrium is the left atrium and the heart valve annulus is the mitral valve annulus.
7. A method for reshaping a heart valve annulus, the method comprising:
positioning an implant at a location proximate the heart valve annulus in an atrium, the implant comprising a tubular body and a plurality of rotatable piercing members, the tubular body comprising a proximal diameter and a distal diameter, and the piercing members coupled with a plurality of rotatable drivers and with the distal diameter and configured to be advanced distally therefrom;
rotating the plurality of piercing members with the plurality of rotatable drivers to advance the plurality of piercing members distally relative to the tubular body and toward the heart valve annulus;
engaging the plurality of piercing members with the heart valve annulus to anchor the implant to the heart valve annulus;
transitioning the tubular body from a first structural configuration to a second structural configuration, the first structural configuration having the proximal diameter smaller than the distal diameter and the second structural configuration having the proximal diameter larger than the distal diameter, thereby reshaping the heart valve annulus;
inserting and positioning a location ring proximate the heart valve within a ventricle of the heart chamber; and
visualizing the location ring to assist with positioning the implant.
8. The method of claim 7 , further comprising removing the location ring from the heart.
9. The method of claim 7 , further comprising coupling at least one piercing member to the location ring by extending the piercing member through the heart valve annulus to connect the piercing member with the location ring.
10. The method of claim 7 , wherein the plurality of piercing members are helical anchors and the method further comprises advancing the plurality of helical anchors distally through a series of holes formed in distal apices of the distal diameter of the tubular body.
11. The method of claim 7 , wherein the step of positioning the implant comprises sliding a delivery catheter over a guide wire, the delivery catheter including the implant and the plurality of rotatable drivers.
12. The method of claim 7 , wherein the atrium is the left atrium and the heart valve annulus is the mitral valve annulus.