Devices, systems, and methods for reshaping a heart valve annulus
Implants or systems of implants and methods apply an upward and inward force producing a minor axis force projection vector within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant. The implants or systems of implants and methods may also utilize a bridge stop to secure the implant, and the methods of implantation employ various tools.
1 . A method comprising:
providing an implant adapted for spanning a heart valve,
extending the implant through a first heart chamber and to second heart chamber, and
applying a tension to the implant, the tension creating a force ranging between about 0.1 lbf to about 1.6 lbf.
2 . A method according to claim 1 :
further including measuring the tension on the implant, the measuring comprising:
providing a catheter including a flexural compliant member at a distal end,
providing force sensing means coupled to a measurement device,
positioning the force sensing means between the implant in at least one of the first heart chamber and the second heart chamber and the flexural compliant member,
applying a tension to the implant while simultaneously pushing the catheter, and
measuring the tension.
3 . The method according to claim 1 :
wherein extending the implant comprises extending the implant through a right atrium and to a left atrium.
4 . The method according to claim 1 :
wherein extending the implant comprises extending the implant through a left atrium and to a right atrium.
5 . A method according to claim 4 :
wherein extending the implant through a left atrium includes extending the implant through a posterior atrial wall.
6 . A method according to claim 4 :
wherein extending the implant through a left atrium includes extending the implant from a great cardiac vein and through a posterior atrial wall.
7 . A method according to claim 4 :
wherein extending the implant to the right atrium includes extending the implant through the septum.
8 . A method according to claim 4 :
wherein extending the implant to the right atrium includes extending the implant through the fossa ovalis.
9 . A method according to claim 1 :
wherein the generated tension results in an upward force and an inward force acting on a heart wall.
10 . A method according to claim 9 :
wherein the heart wall is a left ventricular wall.
11 . A method according to claim 1 :
wherein the generated tension results in a downward force and an inward force acting on a septal wall.
12 . A method according to claim 11 :
wherein the septal wall is a left atrial wall.
13 . A system comprising:
an implant adapted for spanning a heart valve,
the implant adapted to extend through a first heart chamber and to a second heart chamber, and
the implant adapted to generate a tension, the tension creating a force ranging between about 0.1 lbf to about 1.6 lbf.
14 . A system for restoring coaptation of a heart valve comprising:
an implant comprising a first angle, a second angle, and a force, and
the first angle, the second angle, and the force being combined to produce a force projection having a range between about 0.04 lbf to about 1.58 lbf.
15 . A system according to claim 14 :
wherein the first angle comprises a vertex positioned at or near a great cardiac vein.
16 . A system according to claim 14 :
wherein the first angle comprises a range between about 10 degrees and about 60 degrees.
17 . A system according to claim 14 :
wherein the second angle comprises a vertex positioned at or near a great cardiac vein.
18 . A system according to claim 14 :
wherein the second angle comprises a range between about zero degrees and about 45 degrees.
19 . A system according to claim 14 :
wherein the force comprises a range between about 0.1 lbf to about 1.6 lbf.
20 . A system according to claim 14 :
wherein the force comprises an upward force and an inward force acting on a heart wall.
21 . A system according to claim 20 :
wherein the heart wall is a left ventricular wall.
22 . A system according to claim 14 :
wherein the force comprises a downward force and an inward force acting on a septal wall.
23 . A system according to claim 22 :
wherein the septal wall is a left atrial wall.
24 . A method for restoring coaptation of a heart valve comprising:
providing an implant,
extending the implant through a first heart chamber and to a second heart chamber, the implant comprising a first angle, a second angle, and a force, the first angle, the second angle, and the force combining to produce a force projection having a range from about 0.04 lbf to about 1.58 lbf, and
restoring coaptation of the heart valve.
25 . The method according to claim 24 :
wherein extending the implant comprises extending the implant through a left atrium and to a right atrium.
26 . A method according to claim 24 :
wherein the first angle comprises a vertex positioned at or near the great cardiac vein.
27 . A method according to claim 24 :
wherein the first angle comprises a range between about 10 degrees and about 60 degrees.
28 . A method according to claim 24 :
is wherein the second angle comprises a vertex positioned at or near the great cardiac vein.
29 . A method according to claim 24 :
wherein the second angle comprises a range between about zero degrees and about 45 degrees.
30 . A method according to claim 24 :
wherein the force comprises an upward force and an inward force acting on a heart wall.
31 . A method according to claim 30 :
wherein the heart wall is a left ventricular wall.
32 . A method according to claim 24 :
wherein the force comprises a downward force and an inward force acting on a septal wall.
33 . A method according to claim 32 :
wherein the septal wall is a left atrial wall.
34 . A method according to claim 24 :
wherein the force comprises a range between about 0.1 lbf to about 1.6 lbf.
35 . A method of measuring the tension on a heart implant comprising:
providing a catheter including a flexural compliant member at a distal end,
providing force sensing means coupled to a measurement device,
positioning the force sensing means between the implant and the flexural compliant member,
applying a tension to the implant while simultaneously pushing the catheter, and
measuring the tension.
36 . A method according to claim 35 :
further comprising positioning the force sensing means between the implant in a heart chamber and the flexural compliant member.
37 . A method according to claim 35 :
wherein the tension results in an upward tension and an inward tension acting on a heart wall.
38 . A method according to claim 37 :
wherein the heart wall is a left ventricular wall.
39 . A method according to claim 35 :
wherein the tension results in a downward tension and an inward tension acting on a septal wall.
40 . A method according to claim 39 :
wherein the septal wall is a left atrial wall.
41 . A method according to claim 36 :
wherein the heart chamber comprises a left atrium or a right atrium or a left ventricle or a right ventricle.
42 . A system comprising:
an implant adapted to extend through a first heart chamber and to a second heart chamber,
a catheter including a flexural compliant member at a distal end,
force sensing means coupled to a measurement device, the force sensing means positioned between the implant and the flexural compliant member,
the implant adapted to generate a tension while the catheter is simultaneously pushed, and
the measurement device adapted to provide a measurement of the tension.