Biomechanical heart valve prosthesis and method for making same
First Claim
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1. A heart valve prosthesis, comprising:
- a mechanical heart valve having a generally annular support, the mechanical heart valve being operative to permit substantially unidirectional flow of blood through the mechanical heart valve; and
biocompatible biological tissue material disposed around the annular support to define at least part of a sewing ring.
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Abstract
A system and method are disclosed for covering a mechanical heart valve with biological tissue to provide a biomechanical heart valve prosthesis. The prosthesis includes a mechanical heart valve having a moveable portion mounted within a generally annular support that permits substantially unidirectional flow of blood therethrough. One or more sheets of a biological tissue material are applied around the support heart valve to provide a sewing ring that includes the biological tissue material.
21 Citations
37 Claims
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1. A heart valve prosthesis, comprising:
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a mechanical heart valve having a generally annular support, the mechanical heart valve being operative to permit substantially unidirectional flow of blood through the mechanical heart valve; and
biocompatible biological tissue material disposed around the annular support to define at least part of a sewing ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A heart valve prosthesis, comprising:
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a mechanical heart valve having an annulus and a moveable part supported within the annulus to permit generally unidirectional flow of blood through the mechanical heart valve;
at least one sheet of a treated biological tissue material circumscribing at least part of an exterior portion of the mechanical heart valve;
at least one retaining element operative to attach a radially inner portion of the at least one sheet about the exterior portion of the mechanical heart valve. - View Dependent Claims (14, 15, 16, 17)
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18. A heart valve prosthesis, comprising:
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a mechanical heart valve having an annular support and a valve member supported within the annular support to permit generally unidirectional flow of blood through the mechanical heart valve;
a sewing ring of a fabric material disposed around the annular support to form a fabric sewing ring; and
at least one sheet of a biocompatible biological tissue material covering externally exposed portions of the fabric material. - View Dependent Claims (19, 20, 21)
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22. A heart valve prosthesis, comprising:
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mechanical valve means for permitting substantially unidirectional flow of blood through an annulus thereof;
treated, biocompatible biological tissue means for covering around the annulus of the valve means and for providing a sewing ring to facilitate implantation of the prosthesis; and
means for retaining the tissue means around the valve means. - View Dependent Claims (23, 24)
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25. A method of making a biomechanical heart valve prosthesis, comprising:
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providing a mechanical heart valve operative to permit substantially unidirectional flow of blood through the mechanical heart valve; and
applying at least one sheet of a biocompatible biological tissue material around an exterior portion of the mechanical heart valve to provide a sewing ring that includes the biological tissue material. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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34. A heart valve prosthesis, comprising:
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a generally cylindrical support;
a heart valve mounted within the support to permit substantially unidirectional flow of blood through the heart valve; and
at least one sheet of biocompatible biological tissue material mounted around and covering the annular support, one part of the at least one sheet defining a sewing ring. - View Dependent Claims (35, 36, 37)
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Specification