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

Claim 2

A balloon system for dilating blood vessels comprising: a first balloon ( 210 ) of suitable length for being positioned in two approximately aligned sections (T 1 and T 2 ) for the vessel for treatment: a main stem (T 1 ) and a branching vessel (V 2 ), located one on each side of a bifurcation area; and a second balloon ( 230 ) suitable for positioning in a second blood vessel (T 3 ) branching off from the bifurcation wherein the first balloon ( 210 ) incorporates a lateral recess ( 218 ) intended for positioning opposite the bifurcation area in order to house the proximal end ( 236 ) of the second balloon ( 320 ).

Claim 3

A system, as claimed in claim 1 , characterised by the fact that the proximal portion ( 219 ) of the first balloon ( 210 ) located upstream of the recess ( 218 ) is of greater diameter than the distal portion ( 217 ) of the same balloon located downstream of the recess.

Claim 4

A system, as claimed in claim 1 , characterised by the fact that each balloon has a radio-opaque tracer ( 220 and 240 ).

Claim 5

A system, as claimed in claim 1 , characterised by the fact that the two balloons ( 210 and 230 ) are placed in a removable sheath ( 260 ) combined with a manoeuvring wire ( 262 ).

Claim 6

A system, as claimed in one of claim 1 , characterised by the fact that each balloon ( 210 and 230 ) has an inflation tube ( 224 and 244 ) protruding from its proximal end.

Claim 7

A system, as claimed in claim 1 , characterised by the fact that the two inflation tubes ( 224 and 244 ) are joined to a common component ( 250 ) comprising two lumina at a certain distance from the proximal end of the balloons ( 210 and 230 ).

Claim 8

A system, as claimed in claim 1 , characterised by the fact that each balloon ( 210 and 230 ) is combined with a guide ( 121 and 141 ).

Claim 9

A system, as claimed in claim 1 , characterised by the fact that the second balloon ( 230 ) is shorter than the first balloon ( 210 ).

Claim 10

The use of the system defined by claim 1 for dilation of an endoprosthesis for the treatment of blood-vessel bifurcation stenosis at a level of a bifurcation area between a main vessel stem and two secondary vessel stems having a diameter inferior to a diameter of the main vessel stem and branching off from the main vessel stem at the bifurcation comprising three tubular sections ( 110 , 120 and 140 ) and two articulation connectors ( 130 and 150 ): a proximal section ( 110 ) intended for insertion into the main vessel stem; a first distal section ( 120 ) aligned at least approximately with the proximal section ( 110 ) and intended for insertion into a first secondary blood vessel (T 2 ) branching off from the bifurcation, the first distal section ( 120 ) being linked to the proximal section ( 110 ) by a lateral connector ( 130 ); and a second distal section ( 140 ) located at the side of the first distal section ( 120 ) and intended for insertion into a second secondary blood vessel (T 3 ) branching off from the bifurcation, both distal sections ( 120 and 140 ) having their proximal ends linked by a second connector ( 150 ) which allows relative pivoting of said distal sections ( 120 and 140 ) about said second connector ( 150 ) to accommodate the blood-vessel bifurcation.

Claim 11

The use of the system consistent with claim 1 for bifurcation lesion angioplasty.

Claim 12

A balloon system for dilating blood vessels comprising: a first balloon ( 210 ) of suitable length for being positioned in two approximately aligned sections (T 1 and T 2 ) for the vessel for treatment: a main stem (T 1 ) and a branching vessel (V 2 ), located one on each side of a bifurcation area; a second balloon ( 230 ) suitable for positioning in a second blood vessel (T 3 ) branching off from the bifurcation wherein a proximal portion ( 219 ) of the first balloon ( 210 ) located upstream of a recess ( 218 ) is of greater diameter than a distal portion ( 217 ) of the same balloon located downstream of the recess.

Claim 13

A balloon system for dilating blood vessels comprising: a first balloon ( 210 ) of suitable length for being positioned in two approximately aligned sections (T 1 and T 2 ) for the vessel for treatment: a main stem (T 1 ) and a branching vessel (V 2 ), located one on each side of a bifurcation area; a second balloon ( 230 ) suitable for positioning in a second blood vessel (T 3 ) branching off from the bifurcation wherein a proximal portion ( 219 ) of the first balloon ( 210 ) located upstream of a recess ( 218 ) is of greater diameter than a distal portion ( 217 ) of the same balloon located downstream of the recess.

Claim 14

A system, as claimed in claim 11 , wherein the first balloon ( 210 ) incorporates a lateral recess ( 218 ) intended for positioning opposite the bifurcation area in order to house a proximal end ( 236 ) of the second balloon ( 320 ).

Claim 15

A system, as claimed in claim 11 , wherein each balloon has a radio-opaque tracer ( 220 and 240 ).

Claim 16

A system, as claimed in claim 11 , wherein the two balloons ( 210 ) and 230 ) are placed in a removable sheet ( 260 ) combined with a maneuvering wire ( 262 ).

Claim 18

A system, as claimed in claim 11 , wherein the two inflation tubes ( 224 and 244 ) are joined to a common component ( 250 ) comprising two lumina at a certain distance form the proximal end of the balloons ( 210 and 230 ).

Claim 19

A system, as claimed in claim 11 , wherein each balloon ( 210 and 230 ) is combined with a guide ( 121 and 141 ).

Claim 20

A system, as claimed in claim 11 , wherein the second balloon ( 230 ) is shorter than the first balloon ( 210 ).

Claim 21

The use of the system defined by claim 11 for dilation of an endoprosthesis for the treatment of blood-vessel bifurcation stenosis at a level of a bifurcation area between a main vessel stem and two secondary vessel stems having a diameter inferior to a diameter of the main vessel stem and branching off from the main vessel stem at the bifurcation comprising three tubular sections ( 110 , 120 and 140 ) and two articulation connectors ( 130 and 150 ): a proximal section ( 110 ) intended for insertion into the main vessel stem; a first distal section ( 120 ) aligned at least approximately with the proximal section ( 110 ) and intended for insertion into a first secondary blood vessel (T 2 ) branching off from the bifurcation, the first distal section ( 120 ) being linked to the proximal section ( 110 ) by a lateral connector ( 130 ); and a second distal section ( 140 ) located at the side of the first distal section ( 120 ) and intended for insertion into a second secondary blood vessel (T 3 ) branching off from the bifurcation, both distal sections ( 120 and 140 ) having their proximal ends linked by a second connector ( 150 ) which allows relative pivoting of said distal sections ( 120 and 140 ) about said second connector ( 150 ) to accommodate the blood-vessel bifurcation.

Claim 22

The use of the system defined by claim 11 for bifurcation lesion angioplasty.

Claim 23

A balloon system for dilating blood vessels comprising: a first balloon ( 210 ) of suitable length for being positioned in two approximately aligned sections (T 1 and T 2 ) for the vessel for treatment: a main stem (T 1 ) and a branching vessel (V 2 ), located one on each side of a bifurcation area; and a second balloon ( 230 ) suitable for positioning in a second blood vessel (T 3 ) branching off from the bifurcation wherein the second balloon ( 230 ) is shorter than the first balloon ( 210 ).

Claim 24

A balloon system for dilating blood vessels comprising: a first balloon ( 210 ) of suitable length for being positioned in two approximately aligned sections (T 1 and T 2 ) for the vessel for treatment: a main stem (T 1 ) and a branching vessel (V 2 ), located one on each side of a bifurcation area; and a second balloon ( 230 ) suitable for positioning in a second blood vessel (T 3 ) branching off from the bifurcation wherein the second balloon ( 230 ) is shorter than the first balloon ( 210 ).

Claim 25

A system, as claimed in claim 21 , wherein the first balloon ( 210 ) incorporates a lateral recess ( 218 ) intended for positioning opposite the bifurcation area in order to house a proximal end ( 236 ) of the second balloon ( 320 ).

Claim 26

A system, as claimed in claim 21 , wherein a proximal portion ( 219 ) of the first balloon ( 210 ) located upstream of a recess ( 218 ) is of greater diameter than a distal portion ( 217 ) of the same balloon located downstream of the recess.

Claim 27

A system, as claimed in claim 21 , wherein each balloon has a radio-opaque tracer ( 220 and 240 ).

Claim 28

A system, as claimed in claim 21 , wherein the two balloons ( 210 ) and 230 ) are placed in a removable sheet ( 260 ) combined with a maneuvering wire ( 262 ).

Claim 30

A system, as claimed in claim 21 , wherein the two inflation tubes ( 224 and 244 ) are joined to a common component ( 250 ) comprising two lumina at a certain distance form the proximal end of the balloons ( 210 and 230 ).

Claim 31

A system, as claimed in claim 21 , wherein each balloon ( 210 and 230 ) is combined with a guide ( 121 and 141 ).

Claim 32

The use of the system defined by claim 21 for dilation of an endoprosthesis for the treatment of blood-vessel bifurcation stenosis at a level of a bifurcation area between a main vessel stem and two secondary vessel stems having a diameter inferior to a diameter of the main vessel stem and branching off from the main vessel stem at the bifurcation comprising three tubular sections ( 110 , 120 and 140 ) and two articulation connectors ( 130 and 150 ): a proximal section ( 110 ) intended for insertion into the main vessel stem; a first distal section ( 120 ) aligned at least approximately with the proximal section ( 110 ) and intended for insertion into a first secondary blood vessel (T 2 ) branching off from the bifurcation, the first distal section ( 120 ) being linked to the proximal section ( 110 ) by a lateral connector ( 130 ); and a second distal section ( 140 ) located at the side of the first distal section ( 120 ) and intended for insertion into a second secondary blood vessel (T 3 ) branching off from the bifurcation, both distal sections ( 120 and 140 ) having their proximal ends linked by a second connector ( 150 ) which allows relative pivoting of said distal sections ( 120 and 140 ) about said second connector ( 150 ) to accommodate the blood-vessel bifurcation.

Claim 33

The use of the system defined by claim 21 for bifurcation lesion angioplasty.