Endoprosthesis for the treatment of blood-vessel bifurcation stenosis and purpose-built installation device

Claim 2

An endoprosthesis for the treatment of blood-vessel bifurcation stenosis, comprising three tubular sections and two articulation connectors namely: a proximal section; a first distal section aligned at least approximately with the proximal section and intended for insertion into a first blood vessel branching off from the bifurcation, the first distal section being linked to the proximal section by a lateral first connector; and a second distal section located at the side of the first distal section and intended for insertion into a second blood vessel branching off from the bifurcation, both distal sections having their proximal ends linked by a second connector which allows relative pivoting of said distal sections about said second connector to accommodate the blood-vessel bifurcation, wherein the distal end of the proximal section is chamfered and the proximal end of the second distal section is tapered at the other side of the second connector and able to fit into the chamfered form of the proximal section.

Claim 3

An endoprosthesis according to claim 1 wherein the chamfer form is delimited by a flat surface.

Claim 4

An endoprosthesis according to claim 1 wherein the tapered section is delimited by a flat surface.

Claim 5

An endoprosthesis according to claim 1 wherein the chamfer form is delimited by a curved surface.

Claim 6

An endoprosthesis according to claim 1 wherein the tapered section is delimited by a curved surface.

Claim 7

An endoprosthesis according to claim 1 wherein the three tubular sections are of identical diameter prior to use.

Claim 8

An endoprosthesis according to claim 1 wherein the first connector has at its centre a plane of symmetry determined by the axes of the tubular sections and extends in a direction that is approximately parallel to these axes.

Claim 9

An endoprosthesis according to claim 1 wherein the first connector is formed from the same part as the proximal section and the first distal section.

Claim 10

An endoprosthesis according to claim 1 wherein the second connector has as its centre a plane of symmetry determined by the axes of the tubular sections and extends in a direction approximately perpendicular to these axes.

Claim 11

An endoprosthesis according to claim 1 wherein each of the sections is formed from a tubular component with a grid pattern of slits susceptible of expansion circumferentially.

Claim 12

An endoprosthesis for the treatment of blood-vessel bifurcation stenosis, comprising three tubular sections and two articulation connectors namely: a proximal section; a first distal section aligned at least approximately with the proximal section and intended for insertion into a first blood vessel branching off from the bifurcation, the distal section being linked to the proximal section by a lateral first connector; and a second distal section located at the side of the first distal section and intended for insertion into a second blood vessel branching off from the bifurcation, both distal sections having their proximal ends linked by a second connector which allows relative pivoting of said distal sections about said connector to accommodate the blood-vessel bifurcation, wherein the three tubular sections are of identical diameter prior to use and wherein the distal end of the proximal section is chamfered and the proximal end of the second distal section is tapered at the other side of the second connector and able to fit into the chamfered form of the proximal section.

Claim 13

An endoprosthesis for the treatment of blood-vessel bifurcation stenosis, comprising three tubular sections and two articulation connectors namely: a proximal section; a first distal section aligned at least approximately with the proximal section and intended for insertion into a first blood vessel branching off from the bifurcation, the distal section being linked to the proximal section by a lateral first connector; and a second distal section located at the side of the first distal section and intended for insertion into a second blood vessel branching off from the bifurcation, both distal sections having their proximal ends linked by a second connector which allows relative pivoting of said distal sections about said connector to accommodate the blood-vessel bifurcation, wherein the three tubular sections are of identical diameter prior to use and wherein the distal end of the proximal section is chamfered and the proximal end of the second distal section is tapered at the other side of the second connector and able to fit into the chamfered form of the proximal section.

Claim 14

An endoprosthesis according to claim 11 , wherein the chamfer form is delimited by a flat surface.

Claim 15

An endoprosthesis according to claim 11 , wherein the tapered section is delimited by a flat surface.

Claim 16

An endoprosthesis according to claim 11 , wherein the chamfer form is delimited by a curved surface.

Claim 17

An endoprosthesis according to claim 11 , wherein the tapered section is delimited by a curved surface.

Claim 18

An endoprosthesis according to claim 11 , wherein the first connector has at its centre a plane of symmetry determined by the axes of the tubular sections and extends in a direction that is approximately parallel to these axes.

Claim 19

An endoprosthesis according to claim 11 , wherein the first connector is formed from the same part as the proximal section and the first distal section.

Claim 20

An endoprosthesis according to claim 11 , wherein the second connector has as its centre a plane of symmetry determined by the axes of the tubular sections and extends in a directions approximately perpendicular to these axes.

Claim 21

An endoprosthesis according to claim 11 , wherein the second connector is attached to the two distal sections.

Claim 22

An endoprosthesis according to claim 11 , wherein each of the sections ( 110 , 120 and 140 ) is formed from a tubular component with a grid pattern of slits susceptible of expansion circumferentially.

Claim 23

An endoprosthesis for the treatment of blood-vessel bifurcation stenosis, comprising three tubular sections and two articulation connectors namely: a proximal section; a first distal section aligned at least approximately with the proximal section and intended for insertion into a first blood vessel branching off from the bifurcation, the distal section being linked to the proximal section by a lateral first connector; and a second distal section located at the side of the first distal section and intended for insertion into a second blood vessel branching off from the bifurcation, both distal sections having their proximal ends linked by a second connector which allows relative pivotment of said distal sections about said second connector to accommodate the blood-vessel bifurcation wherein the second connector has at its centre a plane of symmetry determined by the axes of the tubular sections and extends in a direction approximately perpendicular to these axes and wherein the distal end of the proximal section is chamfered and the proximal end of the second distal section is tapered at the other side of the second connector and able to fit into the chamfered form of the proximal section.

Claim 24

An endoprosthesis for the treatment of blood-vessel bifurcation stenosis, comprising three tubular sections and two articulation connectors namely: a proximal section; a first distal section aligned at least approximately with the proximal section and intended for insertion into a first blood vessel branching off from the bifurcation, the distal section being linked to the proximal section by a lateral first connector; and a second distal section located at the side of the first distal section and intended for insertion into a second blood vessel branching off from the bifurcation, both distal sections having their proximal ends linked by a second connector which allows relative pivotment of said distal sections about said second connector to accommodate the blood-vessel bifurcation wherein the second connector has at its centre a plane of symmetry determined by the axes of the tubular sections and extends in a direction approximately perpendicular to these axes and wherein the distal end of the proximal section is chamfered and the proximal end of the second distal section is tapered at the other side of the second connector and able to fit into the chamfered form of the proximal section.

Claim 25

An endoprosthesis according to claim 21 , wherein the chamfer form is delimited by a flat surface.

Claim 26

An endoprosthesis according to claim 21 , wherein the tapered section is delimited by a flat surface.

Claim 27

An endoprosthesis according to claim 21 , wherein the chamfer form is delimited by a curved surface.

Claim 28

An endoprosthesis according to claim 21 , wherein the tapered section is delimited by a curved surface.

Claim 29

An endoprosthesis according to claim 21 , wherein the three tubular sections are of identical diameter prior to use.

Claim 30

An endoprosthesis according to claim 21 , wherein the first connector has as its centre a plane of symmetry determined by the axes of the tubular sections and extends in a direction that is approximately parallel to these axes.

Claim 31

An endoprosthesis according to claim 21 , wherein the first connector is formed from the same part as the proximal section and the first distal section.

Claim 32

An endoprosthesis according to claim 21 , wherein the second connector is attached to the two distal sections.

Claim 33

An endoprosthesis according to claim 21 , wherein each of the sections is formed from a tubular component with a grid pattern of slits susceptible of expansion circumferentially.