Variable form stent and deployment arrangement for use therewith
OwnerMax Nasrallainventor
Life of this patent
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Abstract
A stent implantation arrangement comprises a stent (18) mounted upon a balloon (10), the stent (18) extending over regions (12, 14) of the balloon (10) of different diameters, when the balloon occupies an inflated condition. A stent (18) particularly suitable for use in the implantation and deployment arrangement includes regions of different radial resistance to expansion.
Claims8
A stent implantation arrangement comprising an inflatable balloon (10) and a stent (18) mounted upon the balloon (10) by being crimped over the balloon, the balloon (10) being of the type which, when inflated to a given pressure, has a useful length which adopts a non-cylindrical shape, and characterised in that the stent is crimped over the useful length of the balloon which, when inflated, adopts the non-cylindrical shape.
An arrangement as claimed in any one of the preceding claims, characterised in that the balloon, when inflated, includes a relatively large diameter region (12) and a relatively small diameter region (14) the stent (18) having a relatively low radial resistance to expansion in a first part (24) thereof which overlays the part (12) of the balloon which, when inflated, is of relatively large diameter, and a higher radial resistance to expansion in a second part (26) thereof which overlays the part (14) of the balloon (10) which, when inflated, is of relatively small diameter.
A stent comprising a tubular body defined by a plurality of corrugated rings (20) interconnected by ‘S’ shaped linkages (22), each corrugated ring (20) comprising a plurality of struts interconnected with one another, and characterised in that the struts of at least one of the rings (20) are of a different thickness to the struts of at least one other of the rings (20).
Dependencies are inferred from the claim text.