Endovascular prosthesis and relating manufacturing procedure
AssigneeI.B.S. International Biomedical Systems, S.r.l.
InventorNader Shehata
Life of this patent
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Abstract
An endovascular prosthesis is described, in the shape of a cylindrical spiral, and comprising: one or more multiple elements each of which with a sinusoidal shape composed of first sections with a substantially rectilinear development (peaks), defining corresponding levels, and being connected to one another through second sections with a substantially rectilinear development (connection segments); the peaks (1, 2) and the connection segments (3) have an orientation that substantially follows the natural orientation of the elastic fibres of the artery.
Claims11
Endovascular prosthesis in the shape of a cylindrical spiral, comprising:
- one or more multiple elements each of which with a sinusoidal shape composed of first sections with a substantially rectilinear development (1, 2), defined below as “peaks”;
- said multiple elements defining corresponding levels, and being connected to one another through second sections with a substantially rectilinear development (3), defined below as “connection segments”,
- characterized in that
- when the endovascular prosthesis is inserted in an artery, the orientation of peaks and connection segments is 45° with respect to the direction of said cylindrical spiral in the sections of the artery not involved by bifurcations, and/or is between 60° and 75° in the areas of the artery corresponding to bifurcations,
- said peaks and said connection segments having an orientation that substantially follows the natural orientation of the elastic fibres of the artery.
2-3. (canceled)
Procedure for processing by a computer programme, for determining said cylindrical spiral shape of said endovascular prosthesis, characterised in that a calculating procedure is performed which calculates the minimum value of the difference in values of the stress-strain of the artery wall in the case of absence of stent, and in the case of a stent implanted in the artery.
Dependencies are inferred from the claim text.