Mitral valve prosthesis
First Claim
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1. A heart valve prosthesis comprising:
- a support adapted to be coupled to the mitral annulus;
a valve element coupled to the support and moveable between an open position and a closed position;
at least one continuity member having one end coupled to said support and the other end for coupling to papillary muscle; and
restraining means for securing the continuity member to an area of heart muscle and for permiitting adjustment of the continuity member externally of the heart.
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Abstract
The present invention relates to a mitral valve prosthesis comprising flexible leaflet-like elements with curved coapting surfaces and means for maintaining continuity of the valve when inserted into the mitral annulus, which mimics the continuity between the papillary muscles, the chordae tendineae, the mitral valve leaflets and the mitral annulus of a natural valve. The present invention also relates to a method of fitting such a prosthesis to heart of a patient.
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Citations
50 Claims
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1. A heart valve prosthesis comprising:
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a support adapted to be coupled to the mitral annulus;
a valve element coupled to the support and moveable between an open position and a closed position;
at least one continuity member having one end coupled to said support and the other end for coupling to papillary muscle; and
restraining means for securing the continuity member to an area of heart muscle and for permiitting adjustment of the continuity member externally of the heart. - View Dependent Claims (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, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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2. A heart valve prosthesis comprising:
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a support adapted to be coupled to the mitral annulus;
first and second valve elements coupled to the supportand moveable between an open position and a closed position, the elements defining curved coapting surfaces, each surface having at least two points of inflection; and
at least one continuity member having one end coupled to said support and the other end adapted for coupling to papillary muscle.
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47. A method of inserting a heart valve prosthesis, the prosthesis comprising a support, a valve element coupled to the support and moveable between an open position and a closed position, and at least one continuity member having one end coupled to said support, said method comprising the steps of:
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(i) securing the support to the mitral orifice of the heart;
(ii) passing the other end of the continuity member through the papillary muscle of the heart; and
(iii) adjusting the continuity member externally of the heart. - View Dependent Claims (49, 50)
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48. A method of inserting a heart valve prosthesis, the prosthesis comprising a support, a valve element coupled to the support and moveable between an open position and a closed position, and at least one continuity member having one end coupled to said support, said method comprising the steps of:
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(a) excising a diseased valve from a patient, wherein papillary muscle tips and a rim of leaflet tissue at the mitral orifice are left intact;
(b) measuring the size of the patient'"'"'s valve cavity;
(c) determining appropriate sites within the patient'"'"'s papillary muscle to receive the continuity member;
(d) perforating the patient'"'"'s heart at the determined papillary muscle site;
(e) securing the support to the mitral orifice of the heart;
(f) passing the continuity member through the papillary muscle of the heart;
(g) adjusting the continuity member externally of the heart; and
(h) securing the continuity member to said papillary muscle.
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Specification