Method and apparatus for replacing a mitral valve with a stentless bioprosthetic valve
First Claim
1. A stentless bioprosthetic valve for replacing a native mitral valve resected from a valve annulus in a heart, the native mitral valve having anterior and posterior leaflets and associated chordae tendinae, said bioprosthetic valve comprising:
- at least one piece of biocompatible material comprising a bi-leaflet conduit having dimensions that correspond to the dimensions of the native mitral valve, said conduit having a proximal end and a distal end, said proximal end of said conduit defining a first annulus for suturing to the valve annulus in the heart;
said conduit further including first and second leaflets that mimic the three-dimensional anatomical shape of the anterior and posterior leaflets of the native mitral valve, said first and second leaflets extending between said proximal end and said distal end of said conduit;
said distal end of said conduit defining a second annulus at which said first and second leaflets terminate, said second annulus for suturing to free edges of the anterior and posterior leaflets of the native mitral valve that remain intact following resection of the native mitral valve so that the native chordae tendinae, which are attached to the papillary muscles, continue to provide prolapse prevention and left ventricular muscle support functions in addition to maintaining the continuity between the valve annulus and the papillary muscles.
1 Assignment
0 Petitions
Accused Products
Abstract
A stentless bioprosthetic valve includes at least one piece of biocompatible material comprising a bi-leaflet conduit. The conduit has a distal end and a proximal end that defines a first annulus for suturing to the valve annulus of a heart. The conduit further includes first and second leaflets that mimic the anterior and posterior leaflets of the native mitral valve. The first and second leaflets extend between the proximal and distal ends. The distal end defines a second annulus at which the first and second leaflets terminate. The second annulus is for suturing to free edges of the anterior and posterior leaflets of the native mitral valve that remain intact following resection of the native mitral valve so that the native chordae tendinae continue to provide prolapse prevention and left ventricular muscle support functions in addition to maintaining the continuity between the valve annulus and the papillary muscles. A method for replacing the native mitral valve with a stentless bioprosthetic valve is also provided.
-
Citations
21 Claims
-
1. A stentless bioprosthetic valve for replacing a native mitral valve resected from a valve annulus in a heart, the native mitral valve having anterior and posterior leaflets and associated chordae tendinae, said bioprosthetic valve comprising:
-
at least one piece of biocompatible material comprising a bi-leaflet conduit having dimensions that correspond to the dimensions of the native mitral valve, said conduit having a proximal end and a distal end, said proximal end of said conduit defining a first annulus for suturing to the valve annulus in the heart;
said conduit further including first and second leaflets that mimic the three-dimensional anatomical shape of the anterior and posterior leaflets of the native mitral valve, said first and second leaflets extending between said proximal end and said distal end of said conduit;
said distal end of said conduit defining a second annulus at which said first and second leaflets terminate, said second annulus for suturing to free edges of the anterior and posterior leaflets of the native mitral valve that remain intact following resection of the native mitral valve so that the native chordae tendinae, which are attached to the papillary muscles, continue to provide prolapse prevention and left ventricular muscle support functions in addition to maintaining the continuity between the valve annulus and the papillary muscles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A stentless bioprosthetic valve for replacing a native mitral valve resected from a valve annulus in a heart, the native mitral valve having anterior and posterior leaflets and associated chordae tendinae, said bioprosthetic valve comprising:
-
at least one piece of biocompatible material comprising a bi-leaflet conduit having dimensions that correspond to the dimensions of the native mitral valve, said conduit having a proximal end and a distal end, said proximal end of said conduit defining a first annulus;
said conduit further including first and second leaflets that mimic the three-dimensional anatomical shape of the anterior and posterior leaflets of the native mitral valve, said first and second leaflets extending between said proximal end and said distal end of said conduit;
said distal end of said conduit defining a second annulus at which said first and second leaflets terminate, said second annulus for suturing to free edges of the anterior and posterior leaflets of the native mitral-valve that remain intact following resection of the native mitral valve so that the native chordae tendinae, which are attached to the papillary muscles, continue to provide prolapse prevention and left ventricular muscle support functions in addition to maintaining the continuity between the valve annulus and the papillary muscles; and
a biocompatible, unstented ring connected to said first annulus for supporting said first annulus and for suturing to the valve annulus in the heart, said ring, when sutured to the valve annulus, impeding dilatation of the valve annulus and preserving motion of the valve annulus. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
18. A method for replacing a native mitral valve having anterior and posterior leaflets with a stentless bioprosthetic valve, said method comprising the steps of:
-
providing at least one piece of biocompatible material that comprises a bi-leaflet conduit having dimensions that correspond to the dimensions of the native mitral valve being replaced, the conduit having a proximal end and a distal end, the proximal end defining a first annulus and the distal end defining a second annulus, the conduit further including first and second leaflets that mimic the three-dimensional shape of the anterior and posterior leaflets of the native mitral valve, the first and second leaflets extending from the proximal end and terminating at the distal end of the conduit;
resecting the majority of the anterior and posterior leaflets of the native mitral valve from the valve annulus but leaving the free edges of the anterior and posterior leaflets intact along with the native chordae tendinae, which are attached to the papillary muscles, so that the native chordae tendinae can provide prolapse prevention and left ventricular muscle support functions for the bioprosthetic valve in addition to maintaining the continuity between the valve annulus and the papillary muscles;
suturing the first and second leaflets at the second annulus of the conduit to the free edges of the anterior and posterior leaflets of the native mitral valve that remain following resection of the native mitral valve; and
suturing the first annulus of the conduit to the valve annulus of the native mitral valve to secure the bioprosthetic valve to the valve annulus. - View Dependent Claims (19, 20, 21)
-
Specification