Methods and systems for delivering prostheses using rail techniques
Exemplary embodiments provide methods and systems for delivering a prosthesis to a target location in a lumenal system of a patient. At least one tether is secured proximate the target location to serve as a rail, and a prosthesis is advanced along the rail to the target location and secured in place. Exemplary methods and systems provide for repair of the mitral and tricuspid valves, as well as abdominal aortic aneurysms, stomach valves, fallopian tubes and the pulmonary system, among others. Also disclosed are various prostheses suitable for use with the disclosed methods and systems.
1. A method for treating a lumenal anatomical location, comprising: a) advancing a distal region of a delivery catheter proximate a target location in a patients lumenal system; b) dispensing a penetrating member from the delivery catheter proximate the target location; c) advancing the penetrating member through a first portion of lumenal tissue proximate the target location to define a first passage; d) advancing a first end of a first tether through the first passage, the first tether having a coupling disposed at a second end thereof; e) coupling a first end of a second tether to the second end of the first tether; and f) advancing the first tether and then the second tether until the coupling passes through the first passage; and g) threading at least one of the first tether and the second tether through a prosthesis and advancing the prosthesis along the at least one of the first tether and the second tether using the at least one of the first tether and the second tether as a guide rail to guide the prosthesis to the target location.
2. The method of claim 1 , further comprising coupling a first end of a third tether to a coupling at a second end of the second tether.
3. The method of claim 1 , wherein the prosthesis defines an open lumen upon installation.
4. The method of claim 3 , further comprising disposing a second prosthesis within the open lumen.
5. The method of claim 4 , wherein the second prosthesis includes a lumenal valve.
6. The method of claim 5 , wherein the lumenal valve includes synthetic material.
7. The method of claim 4 , wherein the target location is proximate a patient's mitral annulus.
8. The method of claim 5 , wherein the lumenal valve includes living tissue.
9. The method of claim 1 , wherein the first passage is formed proximate the commissure of a mitral valve.
10. The method of claim 1 , wherein a second end of the second tether includes an anchor coupled thereto, and wherein the method further comprises advancing the second tether through the first passage until the anchor abutted tissue at a first end of the first passage.
11. The method of claim 10 , further comprising directing a lock over the first tether and second tether until it abuts a second end of the first passage, and locking the lock into place on the second tether.
12. The method of claim 11 , further comprising threading the first end of the second tether through a portion of a prosthesis or a distal portion of a catheter, and advancing the prosthesis or the distal portion of the catheter to the target location.
13. The method of claim 10 , wherein the anchor abuts tissue proximate an atrial side of a mitral annulus.
14. The method of claim 1 , wherein the first passage passes through a commissure of a mitral valve.
15. The method of claim 1 , wherein the delivery catheter is delivered to the target location through an incision proximate the bottom of a left ventricle.
16. The method of claim 1 , wherein the delivery catheter is delivered to the target location through an incision proximate the top of a left atrium.
17. The method of claim 1 , wherein the delivery catheter is delivered to the target location percutaneously via an artery.