Total mitral heterologous bioprosthesis to be used in mitral or tricuspid heart replacement
First Claim
1. A heterologous total stentless mitral valve prosthesis obtained from a mammal with a size, anatomy and function similar to a human'"'"'s, suitable for mitral and tricuspid valve replacement in a patient, the heterologous total stentless mitral valve prosthesis comprising:
- a heart valve having an annulus, leaflets attached to said annulus and chordae extending from said leaflets, the annulus corresponding to the annulus of the valve obtained from said mammal and having a heterologous mitral sewing rim to be secured to the natural valve annulus of the patient; and
a collar secured to said heterologous mitral sewing rim, such that said sewing rim is enveloped, to strengthen said mitral sewing rim.
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Abstract
The present invention relates to a heterologous total stentless mitral valve prosthesis for the use in mitral and tricuspid position which provides for better hemodynamic performance. This mitral valve prosthesis addresses the specific needs of flow and contractility, thereby prolonging durability. The heterologous total stentless mitral heart valve prosthesis of this present invention comprises one sewing ring, leaflets, and subvalvular apparatus having new chordal insertions which are fixed to or in between two heterologous pericardial patches. This heart valve prosthesis is obtained from heterologous mammals, such as swine, ovine, bovine, and moreover, the pericardial patches used may also be of synthetic material. The heart valve prosthesis presents specific design benefits from its anatomical and functional characteristics permitting chordal insertion to the papillary muscles and attachment of its sewing rim to the mitral annulus of the recipient, thereby providing for better hemodynamic performance and avoiding disfunction and dilatation of the left ventricle.
295 Citations
12 Claims
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1. A heterologous total stentless mitral valve prosthesis obtained from a mammal with a size, anatomy and function similar to a human'"'"'s, suitable for mitral and tricuspid valve replacement in a patient, the heterologous total stentless mitral valve prosthesis comprising:
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a heart valve having an annulus, leaflets attached to said annulus and chordae extending from said leaflets, the annulus corresponding to the annulus of the valve obtained from said mammal and having a heterologous mitral sewing rim to be secured to the natural valve annulus of the patient; and a collar secured to said heterologous mitral sewing rim, such that said sewing rim is enveloped, to strengthen said mitral sewing rim. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of selecting a heterologous total stentless mitral valve prosthesis of correct size for mitral or tricuspid valve replacement in humans, said heterologous mitral valve comprising a sewing rim to be secured to the natural valve annulus of the patient, the method comprising the steps of:
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securing a collar to said sewing rim of said heterologous mitral valve to envelope said sewing rim; placing markings on said collar at left and right trigone areas to determine correct size of the valve; and matching the intertrigonal area of the mitral annulus of the patient with a spacing between said markings to select a valve of correct size. - View Dependent Claims (10, 11, 12)
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Specification