Heart valve prosthesis
First Claim
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1. A heart valve prosthesis comprising:
- a base having an inside annular wall surrounding a passage for carrying blood through the base, means for connecting the base to heart tissue, valving means located in the passage for controlling the flow of blood through the passage, said valving means comprising a first valving member having a convex curved leading edge and a transverse trailing edge, and a second valving member having a convex curved leading edge and a transverse trailing edge, first pivot means pivotally connecting the first member to the base for movement about a first axis offset in one direction from the center of the passage, second pivot means pivotally connecting the second member to the base for movement about a second axis offset in the direction opposite the one direction from the center of the passage, a first side member on the base projected in the direction of the flow of blood through the passage, a second side member on the base projected in the direction of the flow of blood through the passage, said second side member being opposite the first side member, each side member having first stop means engageable with the first valving member and second valving member to hold the first valving member and second valving member in inclined closed positions to restrict the flow of blood in one direction through the passage, and second stop means on the base engageable with the first valving member and the second valving member when the valving members are in their open positions.
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Abstract
A heart valve prosthesis having an annular base carrying two pivoting valving members for use in a heart to control the flow of blood. The valving members are pivotally mounted on the annular base for pivotal movement about separate axes spaced from the center of the base. In one form of the prosthesis the base is removably attached to a suturing assembly adapted to be connected to heart tissue.
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Citations
64 Claims
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1. A heart valve prosthesis comprising:
- a base having an inside annular wall surrounding a passage for carrying blood through the base, means for connecting the base to heart tissue, valving means located in the passage for controlling the flow of blood through the passage, said valving means comprising a first valving member having a convex curved leading edge and a transverse trailing edge, and a second valving member having a convex curved leading edge and a transverse trailing edge, first pivot means pivotally connecting the first member to the base for movement about a first axis offset in one direction from the center of the passage, second pivot means pivotally connecting the second member to the base for movement about a second axis offset in the direction opposite the one direction from the center of the passage, a first side member on the base projected in the direction of the flow of blood through the passage, a second side member on the base projected in the direction of the flow of blood through the passage, said second side member being opposite the first side member, each side member having first stop means engageable with the first valving member and second valving member to hold the first valving member and second valving member in inclined closed positions to restrict the flow of blood in one direction through the passage, and second stop means on the base engageable with the first valving member and the second valving member when the valving members are in their open positions.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A heart valve prosthesis comprising:
- a base having an inside annular wall surrounding a passage for carrying blood through the base, valving means located in the passage movable to open and closed positions for controlling the flow of blood through the passage, said valving means comprising a first valving member having a convex curved leading edge and a transverse trailing edge, and a second valving member having a convex curved leading edge and a transverse trailing edge, first pivot means pivotally associating the first member with the base, said first pivot means having fulcrum portions engageable with the first valving member for controlling the movement of the first valving member in a location offset in one direction from the center of the passage, second pivot means pivotally associating the second member with the base, said second pivot means having fulcrum portions engageable with the second valving member for controlling the movement of the second valving member in a location offset in the direction opposite the one direction from the center of the passage, a first side member on the base projected in the direction of the flow of blood through the passage, a second side member on the base projected in the direction of the flow of blood through the passage, said second side member being opposite the first side member, each side member having first stop means engageable with the first valving member and second valving member to hold the first valving member and second valving member in inclined closed positions to restrict the flow of blood in one direction through the passage, and said first and second pivot means having second stop means on the base engageable with the first valving member and the second valving member when the valving members are in their open positions.
- View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A heart valve prosthesis comprising:
- a base having first and second semi-circular segments defining an inside annular wall surrounding a passage for carrying blood through the base and annular means holding said segments in circular arrangement, valving means movable to open and closed positions for controlling the flow of blood through the passage, said valving means comprising a first valving member and a second valving member, means cooperating with the valving members for controlling the opening and closing movements of the valving members and retaining the valving members in operative assembled relation with the base, said means cooperating with the valving members including first pivot means movably associating the first valving member with the base, said first pivot means having first and second pairs of pivot members secured to the base and engageable with separate portions of the first valving member, said first valving member having means cooperating with the first and second pairs of pivot members to retain the first valving member in assembled relation with the base, second pivot means movably associating the second valving member with the base, said second pivot means having first and second pairs of pivot members secured to the base and engageable with separate portions of the second valving member, said second valving member having means cooperating with the first and second pair of pivot members of the second pivot means to retain the second valving member in assembled relation with the base, said first pairs of pivot members of the pivot means being joined to said first segment and said second pairs of pivot members of said pivot means being joined to said second segment, and side members on the base projected in the direction of flow of blood through the passage, said side members having stop portions engageable with the first and second valving members when said first and second valving members are in their closed positions.
- View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. A valving member for a heart valve prosthesis comprising:
- a semi-elliptical shaped member having a convex curved leading edge, a transverse linear trailing edge, arcuate side edges connecting the opposite sides of the leading edge to opposite ends of the trailing edge and generally flat side surfaces extended from the leading edge to the trailing edge.
- View Dependent Claims (41, 42, 43, 44, 45, 46, 47)
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48. A heart valve prosthesis comprising:
- a base having an inside annular wall surrounding a passage for carrying blood through the base, means for connecting the base to heart tissue, said means including first means and second means for connecting the first means to heart tissue, and coacting means on the base and first means operable to permit removal of the base from the first means after the first means is connected to heart tissue, valving means for controlling the flow of blood through the passage, said valving means comprising a first valving member and a second valving member, first pivot means pivotally mounting the first valving member on the base, second pivot means pivotally mounting the second valving member on the base, and side members on the base projected in the direction of flow of blood through the passage, said side members having stop means engageable with the first and second valving members when said first and second valving members are in their closed positions.
- View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A heart valve prosthesis comprising:
- a base having a pair of semi-circular segments located in a circular arrangement, said segments having an inside annular wall forming a passage through the base, annular means surrounding the segments for holding the segments in the circular arrangement, valving means movable to open and closed positions for controlling the flow of blood through said passage, and means secured to the segments cooperating with the valving means to hold the valving means in assembled relation with the base and controlling the opening and closing movements of the valving means.
- View Dependent Claims (62, 63, 64)
Specification