METHODS AND APPARATUS FOR MITRAL VALVE REPAIR
First Claim
1. A valve leaflet support system, comprising:
- at least one support member sized for intravascular delivery and having a low-profile delivery configuration and an expanded deployed configuration, wherein the at least one support member is further sized for placement against or along an inferior surface of a posterior mitral leaflet.
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Abstract
Methods and apparatus for mitral valve repair are disclosed herein where the posterior mitral leaflet is supported or buttressed in a frozen or immobile position to facilitate the proper coaptation of the leaflets. An implantable apparatus may be advanced and positioned intravascularly beneath the posterior leaflet of the mitral valve. The apparatus may include one or more individual balloon members, each of which may be optionally configured with supporting integrated structures. A magnet chain catheter may be positioned within the coronary sinus and adjacent to the mitral valve to magnetically secure the apparatus in position beneath the posterior mitral leaflet. Alternatively, a split-ring device may be placed about the chordae tendineae supporting the mitral valve such that the ring slides along the chordae tendineae alternately against the mitral leaflet and towards the papillary muscles during systole and diastole.
296 Citations
37 Claims
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1. A valve leaflet support system, comprising:
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at least one support member sized for intravascular delivery and having a low-profile delivery configuration and an expanded deployed configuration, wherein the at least one support member is further sized for placement against or along an inferior surface of a posterior mitral leaflet. - 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)
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27. A method of supporting a posterior mitral leaflet, comprising:
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intravascularly advancing a delivery catheter into a left ventricle such that a distal portion of the delivery catheter is adjacent to an inferior surface of a posterior mitral leaflet in the patient body;
positioning at least one support member having at least one attractive element thereon with a first polarity adjacent to the inferior surface of the posterior mitral leaflet via the delivery catheter;
intravascularly advancing a guiding catheter into a coronary sinus such that a distal portion of the guiding catheter is adjacent to a mitral valve in a patient body;
positioning at least one anchoring element with a second polarity opposite to the first polarity within the coronary sinus via the guiding catheter such that the at least one support member and anchoring element are magnetically engaged with one another; and
expanding the at least one support member against the inferior surface of the posterior mitral leaflet such that prolapse of the leaflet is inhibited. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of supporting a posterior mitral leaflet, comprising:
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positioning a ringed support member at least partially around a chordae tendineae supporting a mitral valve;
sliding the ringed support member along the chordae tendineae into a superior position against or adjacent to a posterior mitral leaflet during systole; and
sliding the ringed support member along the chordae tendineae into an inferior position towards a papillary muscle during diastole. - View Dependent Claims (37)
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Specification