Method and apparatus for reducing mitral regurgitation
First Claim
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1. An assembly for reducing mitral regurgitation, the assembly comprising:
- a flexible delivery catheter for insertion into a coronary sinus of a patient in a vicinity of a posterior leaflet portion of a mitral valve;
structure for anchoring a distal end of said catheter in the coronary sinus;
a generally flexible push rod adapted for passage through said delivery catheter; and
an elongated substantially straight rod portion comprising a portion of said push rod and defining a more rigid portion of the length of said generally flexible push rod and disposed proximal to a distal end of said push rod and configured for moving through said catheter and into a position within said catheter and in the vicinity of the posterior leaflet portion of the mitral valve, said elongated substantially straight rod portion being of a metallic material more rigid than tissue proximate the posterior leaflet portion of the mitral valve, and being sized whereby to straighten a natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet portion of the mitral valve, to move a posterior annulus portion of the mitral valve anteriorly and thereby improve coaptation between the posterior leaflet and an anterior leaflet portion of the mitral valve.
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Abstract
A method and device for reducing mitral regurgitation. An elongated body is positioned in a coronary sinus of a patient in a vicinity of a heart mitral valve posterior leaflet. The body is adapted to straighten a natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet to move a posterior annulus anteriorly, which in turn moves the posterior leaflet anteriorly, thereby to improve leaflet coaptation.
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Citations
33 Claims
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1. An assembly for reducing mitral regurgitation, the assembly comprising:
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a flexible delivery catheter for insertion into a coronary sinus of a patient in a vicinity of a posterior leaflet portion of a mitral valve; structure for anchoring a distal end of said catheter in the coronary sinus; a generally flexible push rod adapted for passage through said delivery catheter; and an elongated substantially straight rod portion comprising a portion of said push rod and defining a more rigid portion of the length of said generally flexible push rod and disposed proximal to a distal end of said push rod and configured for moving through said catheter and into a position within said catheter and in the vicinity of the posterior leaflet portion of the mitral valve, said elongated substantially straight rod portion being of a metallic material more rigid than tissue proximate the posterior leaflet portion of the mitral valve, and being sized whereby to straighten a natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet portion of the mitral valve, to move a posterior annulus portion of the mitral valve anteriorly and thereby improve coaptation between the posterior leaflet and an anterior leaflet portion of the mitral valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification