Two piece valve
First Claim
1. A prosthetic heart valve for implantation in a heart, comprising:
- an outer orifice ring;
a tissue attachment mechanism on the outer orifice ring adapted to couple the outer orifice ring to a tissue annulus of the heart;
an inner orifice ring having an occluding mechanism carried therein; and
a ring coupling mechanism adapted to couple the outer orifice ring to the inner orifice ring after the outer orifice ring has been coupled to the tissue annulus, the coupling mechanism comprising a first helical thread on an outer diameter of the inner ring and a second helical thread on an inner diameter of the outer ring, at least one of the diameters including a retaining ridge configured to define an unthreaded region between the retaining ridge and the respective thread, wherein when a helical thread of the other ring is positioned in the unthreaded region, the inner ring is rotatable in the outer ring with substantially no movement in an axial direction of the valve.
1 Assignment
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Accused Products
Abstract
A prosthetic heart valve for implantation in a heart includes an outer orifice ring and an inner orifice ring having an occluding mechanism carried therein. A ring coupling mechanism having helical threads is adapted to couple the outer orifice ring to the inner orifice ring after the outer orifice ring has been coupled to the tissue annulus. The coupling mechanism comprises a first helical thread on an outer diameter of the inner ring and a second helical thread on an inner diameter of the outer ring. At least one of the diameters includes a retaining ridge configured to define an unthreaded region between the retaining ridge and the respective thread. When a helical thread is positioned in the unthreaded region, the inner ring is rotatable in the outer ring with substantially no movement in an axial direction of the valve.
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Citations
13 Claims
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1. A prosthetic heart valve for implantation in a heart, comprising:
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an outer orifice ring;
a tissue attachment mechanism on the outer orifice ring adapted to couple the outer orifice ring to a tissue annulus of the heart;
an inner orifice ring having an occluding mechanism carried therein; and
a ring coupling mechanism adapted to couple the outer orifice ring to the inner orifice ring after the outer orifice ring has been coupled to the tissue annulus, the coupling mechanism comprising a first helical thread on an outer diameter of the inner ring and a second helical thread on an inner diameter of the outer ring, at least one of the diameters including a retaining ridge configured to define an unthreaded region between the retaining ridge and the respective thread, wherein when a helical thread of the other ring is positioned in the unthreaded region, the inner ring is rotatable in the outer ring with substantially no movement in an axial direction of the valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification
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- Resources
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Current AssigneeSt Jude Medical Incorporated (Abbott Laboratories)
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Original AssigneeSt Jude Medical Incorporated (Abbott Laboratories)
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InventorsOtte, John F.
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Primary Examiner(s)Prebilic, Paul B.
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Assistant Examiner(s)Matthews, William H
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Application NumberUS09/571,801Time in Patent Office889 DaysField of Search623/2.1, 623/2.39, 623/2.4, 623/2.38, 623/2.41, 623/2.11, 411/259, 215/274US Class Current623/2.4CPC Class CodesA61F 2/2403 with pivoting rigid closure...
