Patent EP0515324B1 successfully refreshed from Google Patents.
EP0515324B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A cardiac valve prosthesis, particularly for replacement of the aortic valve
Assignee: Sorin Biomedica Cardio SpA
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Filing: 1992-05-19
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Granted: 1996-12-18
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Expires: 2012-05-19
Abstract
Abstract A stentless prosthesis is made completely from material (10,12), for example bovine pericardium, other than valve material. The projection of the valve sleeve (10) allows any reparatory operations on surrounding tissues. <IMAGE>
Inventors
- 👤 Franco Vallana
- 👤 Maria Curcio
- 👤 Carla Stacchino
- 👤 Stefano Rinaldi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 06:06
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2415; A61F2220/00; A61F2220/0025; A61F2220/0075
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
207 words
A cardiac valve prosthesis comprising a stentless valve sleeve made from two sheets of a material (10, 12), of which one sheet (12) is arranged on the inside of the sleeve to define the prosthetic valve leaflets (14) while the other sheet (10) is arranged on the outside of the sleeve and constitutes a formation for the suturing (C) of the prosthesis during implantation, characterized in that it includes valve leaflets (14) of a material selected from the group constituted by biological tissue other than biological valve tissue and synthetic material, in that, at the end of the prosthesis intended to be located flowdynamically upstream of the direction of free flow of the blood through the prosthesis, the said one sheet (12) projects axially a certain distance beyond the corresponding edge of the other sheet (10) and in that the sheets (10, 12) are connected together by at least one connecting line having a festoon course (16) with loops which follow the line of the arcuate edges of the valve leaflets (14) and in that the homologous end edges (120, 120') of the other sheet (10) are located at a certain distance of the order of at least about 1 cm from the said festoon line (16).
Claim 2
Dependent Claim
28 words
A prosthesis according to Claim 1, characterized in that said other sheet (10) projects axially from the end edges of the valve leaflets (14) for a certain distance.
Claim 3
Dependent Claim
52 words
A prosthesis according to Claim 1, characterized in that the prosthetic valve leaflets (14) have arcuate edges and in that the other sheet (10) has homologous end edges (120, 120') located at a certain distance, taken axially with respect to the prosthesis from the arcuate edges of the prosthetic valve leaflets (14).
Claim 4
Dependent Claim
38 words
A prosthesis according to Claim 3 characterised in that the homologous end edges (120) of the other sheet (10) also have a generally festoon course which copies the course of the arcuate edges of the valve leaflets (14).
Claim 5
Dependent Claim
19 words
A prosthesis according to Claim 3, characterised in that the homologous end edges (120') have a generally straight course.
Claim 6
Dependent Claim
27 words
A prosthesis according to Claim 5, characterised in that the homologous end edges (120') are approximately complanar with the free end edges of the valve leaflets (14).
Claim 7
Dependent Claim
48 words
A valve prothesis according to Claim 2 or Claim 5, characterised in that the other sheet (10) projects substantially in an axial direction from the end edges of the valve leaflets (14) whereby the prosthesis itself takes on the character of a vasco-valvular, preferably an aortic valve, prosthesis.
Claim 8
Dependent Claim
53 words
A prosthesis according to any one of Claims 1 to 7, characterised in that said one sheet (12) has a projecting appendage (124) at the end of the prosthesis intended to be located flowdynamically upstream in the direction of free flow of blood through the prosthesis for use in a reconstructional operation .
Claim 9
Dependent Claim
50 words
A prosthesis according to any one of Claims 1 to 7, characterised in that the said sheets (10, 12) have a generally trapezoidal shape whereby, when the sleeve is closed on itself to form the duct intended to be traversed by the blood flow, it assumes a generally frusto-conical shape.
Claim 10
Dependent Claim
18 words
A prosthesis according to Claim 1, characterised in that the synthetic material is continuous and/or micro-porous and/or composite.
Claim 11
Dependent Claim
17 words
A prosthesis according to Claim 1 or Claim 10, characterised in that the synthetic material is polyurethane.
Claim 12
Dependent Claim
24 words
A prosthesis according to Claim 1, characterised in that the two sheets (10, 12) are connected together (16) by stitching and/or welding and/or gluing.
Claim 13
Dependent Claim
22 words
A prosthesis according to any one of the preceding Claims made in a single piece of said material, for example by moulding.
Claim 14
Dependent Claim
12 words
An aortic valve prosthesis according to any one Claims 1 to 13.
References Cited (Backward Citations)
EP0155245A2
Cited
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