Biologically implantable heart valve system
First Claim
Patent Images
1. A biologically implantable system for a heart valve, comprising:
- a first prosthesis comprising an annular ring implantable directly and independently into an annulus of a heart, the first prosthesis comprising a circumference and a fabric covering, the annular ring having a circular latitudinal cross-section perpendicular to a central longitudinal axis;
a second prosthesis comprising a heart valve crown, the second prosthesis further comprising a circumference including a fabric covering thereon, the crown comprising an annular frame carrying leaflets, the frame having a latitudinal cross-section in a plane perpendicular to the central longitudinal axis defining multiple lobes separated by scallops, the scallops being disposed closer to the central longitudinal axis within the plane than the lobes; and
at least one engagement element disposed on the circumferences of the first and second prostheses that self-engage one another when the second prosthesis is inserted into engagement with the first prosthesis after the first prosthesis is implanted within an annulus of a heart.
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Abstract
A biologically implantable prosthesis is disclosed. The prosthesis can have a circumferentially expandable wall and elements that prevent the wall from collapsing once the wall is expanded. Methods of making and using the prosthesis are also disclosed.
735 Citations
37 Claims
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1. A biologically implantable system for a heart valve, comprising:
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a first prosthesis comprising an annular ring implantable directly and independently into an annulus of a heart, the first prosthesis comprising a circumference and a fabric covering, the annular ring having a circular latitudinal cross-section perpendicular to a central longitudinal axis; a second prosthesis comprising a heart valve crown, the second prosthesis further comprising a circumference including a fabric covering thereon, the crown comprising an annular frame carrying leaflets, the frame having a latitudinal cross-section in a plane perpendicular to the central longitudinal axis defining multiple lobes separated by scallops, the scallops being disposed closer to the central longitudinal axis within the plane than the lobes; and at least one engagement element disposed on the circumferences of the first and second prostheses that self-engage one another when the second prosthesis is inserted into engagement with the first prosthesis after the first prosthesis is implanted within an annulus of a heart. - View Dependent Claims (2, 3, 4, 5, 6, 15, 16, 17, 18, 19, 20, 21, 33, 34)
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7. A biologically implantable system for a heart valve, comprising:
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a first prosthesis implantable within an annulus of a heart, the first prosthesis comprising a circumference; a second prosthesis comprising a heart valve crown, the second prosthesis comprising a circumference; a plurality of engagement elements disposed around the circumference of the second prosthesis, the engagement elements comprising angled distal surfaces; a plurality of elements disposed around the circumference of the first prosthesis that contact the angled distal surfaces of the engagement elements when the second prosthesis is inserted into the annulus into engagement with the first prosthesis to accommodate the engagement elements self-engaging with the plurality of elements on the first prosthesis; and cooperating elements on the first and second prostheses that angularly align the second prosthesis with the first prosthesis when the second prosthesis is inserted into engagement with the first prosthesis, wherein the engagement elements comprise tabs extending from the second prosthesis at an angle to defined the angled distal surfaces, the tabs being deflectable when the angled distal surfaces contact the plurality of elements on the first prosthesis to accommodate the tabs self-engaging with the plurality of elements on the first prosthesis, wherein the plurality of elements on the first prosthesis comprise a plurality of lips for slidably engaging the angled distal surfaces of the plurality of tabs, the lips defining pockets for receiving the plurality of tabs therein to prevent separation of the first and second prostheses. - View Dependent Claims (8, 9, 10, 11)
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12. A biologically implantable system for a heart valve, comprising:
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a first annular prosthesis implantable within an annulus of a heart, the first prosthesis comprising an annular ring having a circular latitudinal cross-section perpendicular to a central longitudinal axis and a fabric covering; a second prosthesis separate from the first prosthesis and comprising a heart valve crown, the crown comprising an annular frame carrying leaflets, the frame having a latitudinal cross-section in a plane perpendicular to the central longitudinal axis defining multiple lobes separated by scallops, the scallops being disposed closer to the central longitudinal axis within the plane than the lobes; a plurality of engagement elements disposed around the circumferences of the first and second prostheses that self-engage one another when the second prosthesis is inserted into engagement with the first prosthesis; and cooperating elements on the first and second prostheses separate from the plurality of engagement elements, said cooperating elements capable of angularly aligning the second prosthesis with the first prosthesis and preventing rotation of the second prosthesis with respect to the first prosthesis as the second prosthesis is inserted into engagement with the first prosthesis after the first prosthesis is implanted within an annulus of a heart. - View Dependent Claims (14, 22, 23, 35, 36)
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13. A biologically implantable system for a heart valve, comprising:
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a first annular prosthesis implantable within an annulus of a heart, the first prosthesis comprising a circumference and a fabric covering; a second prosthesis separate from the first prosthesis and comprising a heart valve crown, the second prosthesis comprising a circumference; a plurality of engagement elements disposed around the circumferences of the first and second prostheses that self-engage one another when the second prosthesis is inserted into engagement with the first prosthesis; and cooperating elements on the first and second prostheses separate from the plurality of engagement elements, said cooperating elements capable of angularly aligning the second prosthesis with the first prosthesis and preventing rotation of the second prosthesis with respect to the first prosthesis as the second prosthesis is inserted into engagement with the first prosthesis after the first prosthesis is implanted within an annulus of a heart, wherein the cooperating elements comprise a rib and groove on the first and second prostheses, the rib fitting within the groove as the second prosthesis is inserted into engagement with the first prosthesis in a predetermined angular orientation to longitudinally align the second prosthesis with the first prosthesis.
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24. A biologically implantable system for a heart valve, comprising:
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a first annular prosthesis implantable into an annulus within a heart, the first prosthesis including a wall defining a circumference and a central longitudinal axis substantially perpendicular to the circumference, at least a portion of the wall being angled away from the longitudinal axis, the wall having a circular latitudinal cross-section perpendicular to the central longitudinal axis and being foldable into an unexpanded state during delivery including one or more folds and resiliently expandable radially for increasing the circumference and for engaging the tissue annulus; a second annular prosthesis comprising a valve; at least one engagement element on the first and second prostheses that engage one another when the second prosthesis is inserted into engagement with the first prosthesis after the first prosthesis is implanted within an annulus of a heart; wherein the at least one engagement element comprises means for snap-fitting the second prosthesis to the first prosthesis. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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37. A biologically implantable system for a heart valve, comprising:
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a first prosthesis comprising an annular ring implantable directly and independently into an annulus of a heart and a fabric covering, the annular ring having a circular latitudinal cross-section perpendicular to a central longitudinal axis and being foldable into an unexpanded state during delivery including one or more folds and resiliently expandable radially for increasing the circumference and for engaging the tissue annulus; a second prosthesis comprising a heart valve crown comprising an annular frame carrying leaflets, the frame having a latitudinal cross-section in a plane perpendicular to the central longitudinal axis defining multiple lobes separated by scallops, the scallops being disposed closer to the central longitudinal axis within the plane than the lobes; and a plurality of engagement elements spaced apart from one another about a circumference of the first prosthesis and a corresponding plurality of engagement elements spaced apart from one another about a circumference of the frame of the crown that self-engage one another when the second prosthesis is inserted into engagement with the first prosthesis after the first prosthesis is implanted within an annulus of a heart.
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Specification