Source: http://www.google.com/patents/US8231667?dq=5537618&ei=urENT6-uEoHegQe698i5Bw
Timestamp: 2014-03-17 05:25:52
Document Index: 289339960

Matched Legal Cases: ['Application No. 2', 'Application No. 2', 'Application No. 09004690', 'Application No. 02808089', 'Application No. 2004', 'Application No. 2003291416', 'Application No. 02808089', 'Application No. 2003259932', 'Application No. 03793137', 'Application No. 2002356575', 'Application No. 2', 'Application No. 2004', 'Application No. 2004', 'Application No. 2004', 'Application No. 2005']

Patent US8231667 - Endoprosthesis for vascular bifurcation - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn apparatus for treating an area of bifurcation where a principal body conduit separates into at least two secondary conduits comprises a radially expandable first stent body. The first stent body has a substantially conical shape and a first end having a greater diameter than a second end when fully...http://www.google.com/patents/US8231667?utm_source=gb-gplus-sharePatent US8231667 - Endoprosthesis for vascular bifurcationAdvanced Patent SearchPublication numberUS8231667 B2Publication typeGrantApplication numberUS 11/124,905Publication dateJul 31, 2012Filing dateMay 9, 2005Priority dateNov 8, 2002Also published asCA2505137A1, DE60231843D1, EP1567087A1, EP1567087B1, EP2074968A1, US20060100685, US20130041450, WO2004041126A1Publication number11124905, 124905, US 8231667 B2, US 8231667B2, US-B2-8231667, US8231667 B2, US8231667B2InventorsJacques Seguin, Jean-Claude LabordeOriginal AssigneeJacques S�guin, Jean-Claude LabordeExport CitationBiBTeX, EndNote, RefManPatent Citations (106), Non-Patent Citations (43), Classifications (21) External Links: USPTO, USPTO Assignment, EspacenetEndoprosthesis for vascular bifurcationUS 8231667 B2Abstract An apparatus for treating an area of bifurcation where a principal body conduit separates into at least two secondary conduits comprises a radially expandable first stent body. The first stent body has a substantially conical shape and a first end having a greater diameter than a second end when fully expanded. The first stent body is preferably shaped to be independent of any other stent bodies, and is free of any means for connecting to any other stent bodies when fully expanded.
BACKGROUND OF THE INVENTION The present invention relates to an apparatus and kit for the treatment of bodily conduits in the area of a bifurcation, that is to say in the area where a principal conduit separates into two secondary conduits. It also relates to equipment for positioning this apparatus.
DESCRIPTION OF THE PRIOR ART It is known to treat narrowing of a rectilinear blood vessel by means of a radially expandable tubular apparatus, commonly referred to as a stent. This apparatus is introduced in the unexpanded state into the internal lumen of the vessel, in particular by the percutaneous route, as far as the area of narrowing. Once in place, it is expanded in such a way as to support the vessel wall and thus re-establish the appropriate cross section of the vessel.
SUMMARY OF THE INVENTION Prior art apparatuses are not sufficient for treating areas of vascular bifurcation because they require a connection, either direct or indirect, between multiple apparatus segments. This connection forces segments to be aligned relative to one another, as opposed to being aligned according to the shape and curvature of bifurcated vessels to be treated. This decreases the flexibility of the apparatus. In addition, segments connected so as to be directly adjacent or overlapping further decrease the flexibility of the apparatus. Such apparatuses are problematic, for example, for treating a bifurcated secondary conduit that has an axis perpendicular to the axis of the primary conduit.
at least one radially expandable segment which has, in a predetermined expanded state, a cross section substantially greater than the cross section of one of the secondary conduits; and a segment which has, in a predetermined expanded state, a truncated shape, corresponding to the shape of the bifurcation in the area of the widened transitional zone which separates the principal conduit from the secondary conduits. In these embodiments, the segments do not overlap one another, and are not linked together and preferably include no means for being linked together. In this way, optimal positioning of stent segments can be achieved independently from one another. For the purposes of this application, an �unlinked segment� is defined as an independent segment that is neither directly nor indirectly connected to any other surgical apparatus, such as additional stents or segments, when the independent segment is in its predetermined, fully expanded state.
For the sake of simplification, the segment which has, in the expanded state, a cross section substantially greater than the cross section of one of the secondary conduits will be referred to hereinafter as the �secondary segment,� while the segment which has, in the expanded state, a truncated shape will be referred to hereinafter as the �truncated segment.�
BRIEF DESCRIPTION OF THE DRAWINGS To ensure that it is fully understood, the invention is again described hereinbelow with reference to the attached diagrammatic drawings which show, by way of non-limiting example, embodiments of the apparatuses to which the invention relates.
DESCRIPTION OF EMBODIMENTS FIG. 1 shows expandable apparatus 1 permitting the treatment of bodily conduits in the area of a bifurcation, that is to say, as is shown in FIG. 3, in the area where a principal conduit 2 separates into two secondary conduits 3.
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