Support for treating vascular bifurcations

A prosthesis for placement at an ostium opening from a main body lumen to a branch body lumen, the prosthesis comprising:

• a radially expansible support configured to be deployed in at least a portion of the branch body lumen;
• and
• a bifurcation traversing portion having a biostable portion having a first end and a second end, the first end being located adjacent to the radially expansible support and a biodegradable portion having a first end coupled with the second end of the biostable portion and a second end disposed at an end of the prosthesis opposite the radially expansible support, the bifurcation traversing portion comprising an interlock device located between the biodegradable and biostable portions configured to mechanically couple the biodegradable and biostable portions, the interlock device having a protrusion and a jaw member, the jaw member comprising first and second spaced apart portions configured to be moved toward each other to engage with the protrusion at least in the unexpanded state;
• wherein when deployed, the bifurcation traversing portion extends from the radially expansible support across a bifurcation and into a main body lumen such that the ostium opening is supported thereby.

A prosthesis for placement at an ostium opening from a main body lumen to a branch body lumen, the prosthesis comprising:

• a radially expansible support configured to be deployed in at least a portion of the branch body lumen, the support comprising a first plurality of connectors of a first configuration;
• and
• a bifurcation traversing portion having a biostable portion having a first end and a second end, the first end being located adjacent to the radially expansible support and a biodegradable portion having a first end coupled with the second end of the biostable portion and a second end disposed at an end of the prosthesis opposite the radially expansible support, the bifurcation traversing portion comprising a second plurality of connectors of a second configuration different from the first configuration, the second plurality of connectors comprising an interlock device located between the biodegradable and biostable portions, the interlock device having a protrusion and a jaw member, the jaw member comprising first and second spaced apart portions configured to be moved toward each other to engage with the protrusion at least in the unexpanded state;
• wherein when deployed, the bifurcation traversing portion extends from the radially expansible support across a bifurcation and into a main body lumen such that the ostium opening is supported thereby.

A prosthesis for placement at an ostium opening from a main body lumen to a branch body lumen, the prosthesis comprising:

• a radially expansible support configured to be deployed in at least a portion of the branch body lumen;
• and
• a bifurcation traversing portion having a biostable portion having a first end and a second end, the first end being located adjacent to the radially expansible support and a biodegradable portion having a first end coupled with the second end of the biostable portion and a second end disposed at an end of the prosthesis opposite the radially expansible support, the bifurcation traversing portion comprising an interlock device having a protrusion and a jaw member, the jaw member comprising first and second spaced apart portions configured to be moved toward each other to engage with the protrusion at least in the unexpanded state;
• wherein when deployed, the bifurcation traversing portion extends from the radially expansible support across a bifurcation and into a main body lumen such that the ostium opening is supported thereby,
• wherein the biodegradable portion comprises a plurality of longitudinal members each comprising a first zone having two side-by-side axially oriented undulating filaments and a second zone comprising a single axially oriented undulating filament such that the filaments reduce in number from the first zone to the second zone,
• wherein the biodegradable portion further comprises a circumferential member, and
• wherein the biostable portion comprises a plurality of longitudinal members, each longitudinal member of the biostable and biodegradable portions comprising an axially extending part, the interlock device configured to mechanically couple the axially extending parts of the biostable and biodegradable portions.