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EP0070259A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Heart valve prosthesis

Assignee: Sorin Biomedica Cardio SpA
•
Filing: 1982-06-01
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Granted: —
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Expires: 2002-06-01
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Abstract

Abstract The prosthesis comprises an annular frame (1) and a disc-shaped obturator (3) which is coupled to the frame (1) and is pivotable, under the action of the blood flow, between an open angular position (A) and a closed angular position (B), so as to allow the flow of blood through the aperture (1 a) of the annular frame (1) in one direction and the interruption of the flow in the opposite direction, respectively. The obturator (3) is coupled to the frame (1) in such a way that, in the open position (A), it may orient itself in a direction substantially perpendicular to the plane of the frame (1). The side of the obturator (3) which faces away from the central axis (1 b) of the annular frame (1) in the open angular position (A) is defined, at least in its peripheral part, by a surface (3c; 13c; 23c) which is generated by the rotation, about the central axis (3a) of the obturator (3), of a curve the locus of the centres of curvature of which lies on the opposite side of this curve from a curve which generates, by rotation around the said central axis (3a), a surface defining the other side of the obturator (3).

Inventors

  • 👤 Franco Vallana
  • 👤 Gioachino Bona

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 11:38
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2409; A61F2/2403; A61F2/2406; F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 220 words
Heart valve prosthesis comprising an annular frame, a disc-shaped obturator, and means for coupling the obturator to the annular frame which allow the obturator to rotate around its central axis and to orient itself about one of its chordal axes, under the action of the blood flow, between an open angular position and a closed angular position so as to allow the free flow of blood through the aperture of the annular frame in one direction and the interruption of the flow in the opposite direction, respectively, characterised in that the coupling means (10) are such as to enable the obturator (3) to orient itself substantially perpendicular to the plane of the frame (1) in the open angular position (A), and in that the side (3c; 13c; 23c) of the obturator (3) which faces away from the central axis (lb) of the annular frame (1) in the open angular position (A) is defined, at least in peripheral part, by a surface which is generated by rotation about the central axis (3a) of the obturator (3), of a curve the locus of centres of curvature of which lies on the opposite side of said curve from a curve which generates, by rotation about said central axis (3a), a surface defining the other side (3b; 13b; 23b; 33b) of the obturator (3).
Claim 2
Dependent Claim 220 words
Heart valve prosthesis comprising an annular frame, a disc-shaped obturator, and means for coupling the obturator to the annular frame which allow the obturator to rotate around its central axis and to orient itself about one of its chordal axes, under the action of the blood flow, between an open angular position and a closed angular position so as to allow the free flow of blood through the aperture of the annular frame in one direction and the interruption of the flow in the opposite direction, respectively, characterised in that the coupling means (10) are such as to enable the obturator (3) to orient itself substantially perpendicular to the plane of the frame (1) in the open angular position (A), and in that the side (3c; 13c; 23c) of the obturator (3) which faces away from the central axis (lb) of the annular frame (1) in the open angular position (A) is defined, at least in peripheral part, by a surface which is generated by rotation about the central axis (3a) of the obturator (3), of a curve the locus of centres of curvature of which lies on the opposite side of said curve from a curve which generates, by rotation about said central axis (3a), a surface defining the other side (3b; 13b; 23b; 33b) of the obturator (3).

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