Two-way acting valve and cardiac valve prosthesis
First Claim
1. A heart valve prosthesis adapted to be implanted into the ascending aorta, the valve prosthesis comprising a pair of ducts which define an orifice through the aorta and which are separated from each other at least along a portion of their length by a common wall, the common wall being deformable under the pressure of blood in the ascending aorta to selectively open a first one of the ducts and at least partially close the second one of the ducts.
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Abstract
A two-way acting valve is provided which comprises a pair of generally cylindrical ducts in longitudinally overlapping relation one of whose uses is as a cardiac valve prosthesis. The ducts are formed in part by a common wall which is deformed by the pressure of fluid flowing through the ducts and in accordance with the direction of flow to open a respective one of the ducts and to at least partially close the respective other of the ducts to control the flow of fluid through the valve. Modifications of the inventions are also shown which simplify attachment of the valve when it is used as a cardiac valve prosthesis.
561 Citations
21 Claims
- 1. A heart valve prosthesis adapted to be implanted into the ascending aorta, the valve prosthesis comprising a pair of ducts which define an orifice through the aorta and which are separated from each other at least along a portion of their length by a common wall, the common wall being deformable under the pressure of blood in the ascending aorta to selectively open a first one of the ducts and at least partially close the second one of the ducts.
- 5. A heart valve prosthesis comprising an elongated valve body adapted to be implanted into the ascending aorta, the valve body comprising a diastolic duct on the distal end and a systolic duct on the proximal end, wherein the ducts define an orifice through the aorta, the ducts being offset horizontally from each other and connected together by a flexible common wall, the proximal end of the systolic duct configured to a attached around the entire inner circumference of the aorta, proximal the coronary arteries.
- 9. A heart valve prosthesis adapted to be implanted into the ascending aorta, the prosthesis comprising a hollow cylindrical valve body having an opening through a portion of its circumference and a flexible valve leaf which divides the valve body into two ducts, a diastolic duct and a systolic duct, and which is connected on one end to the proximal end of the valve body, the distal end of the valve leaf being configured to be deflected under systolic pressure to open the systolic duct and to partially close the diastolic duct.
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18. A heart valve prosthesis comprising a generally cylindrical valve body adapted to be inserted in conforming relation to the ascending aorta to define an orifice therethrough, the valve body being divided into two ducts by a wall common to each of the two ducts and operatively integral with the valve body, at least a portion of the length of the common wall being capable of movement toward and away from the opposite wall of each of the two ducts which it defines, the common wall having a fixed end operatively integral with the valve body and a free end, wherein the cross-sectional thickness of the common wall increases from its free end toward its fixed end.
- 19. A heart valve prosthesis adapted to be implanted into the ascending aorta, the valve prosthesis comprising a pair of ducts, a systolic duct and a diastolic duct, which define an orifice through the aorta and which are separated from each other at least along a portion of their length by a common wall, the common wall being deformable under the pressure of blood in the ascending aorta to thereby increase the cross-section to blood flow under systolic pressure in the systolic duct by opening the systolic duct and, at the same time, to thereby decrease the cross-section to blood flow in the diastolic duct by at least partially closing the diastolic duct.
Specification