TRANSCATHETER DEVICE FOR SCORING CALCIFICATIONS AND FOR CUTTING VALVE TISSUE
A transcatheter device ( 10 ) includes a first jaw member ( 12 ), a second jaw member ( 14 ) and a linkage mechanism ( 16 ) coupled to the first and second jaw members ( 12, 14 ) for changing a distance between the first and second jaw members ( 12, 14 ). At least one of the first and second jaw members ( 12, 14 ) includes scoring structure ( 20 ) capable of scoring calcifications or tissue or any other anatomical structure, with a direction of a scoring force along a jaw closing axis ( 25 ) that extends between surfaces ( 22, 24 ) of the first and second jaw members ( 12, 14 ), respectively, which face each other. The first jaw member ( 12 ) has a cutting element ( 18 ) arranged to cut in a cutting direction ( 27 ) transverse to the jaw closing axis ( 25 ).
1 . A transcatheter device ( 10 ) comprising:
a first jaw member ( 12 ), a second jaw member ( 14 ) and a linkage mechanism ( 16 ) coupled to said first and second jaw members ( 12 , 14 ) for changing a distance between said first and second jaw members ( 12 , 14 );
at least one of said first and second jaw members ( 12 , 14 ) comprising scoring structure ( 20 ) capable of scoring calcifications or tissue or any other anatomical structure, wherein a direction of a scoring force applied by said scoring structure ( 20 ) is along a jaw closing axis ( 25 ) that extends between surfaces ( 22 , 24 ) of said first and second jaw members ( 12 , 14 ), respectively, which face each other; and
wherein said first jaw member ( 12 ) comprises a cutting element ( 18 ) arranged to cut in a cutting direction ( 27 ) transverse to said jaw closing axis ( 25 ).
2 . The transcatheter device ( 10 ) according to claim 1 , wherein said linkage mechanism ( 16 ) comprises one or more wires ( 70 ) wrapped around a pivot member ( 46 ) which is coupled to said first jaw member ( 12 ), a distal end of said one or more wires ( 70 ) being coupled to said second jaw member ( 14 ), and wherein movement of a proximal end of said one or more wires ( 70 ) in a proximal direction reduces a distance between said first and second jaw members ( 12 , 14 ).
3 . The transcatheter device ( 10 ) according to claim 1 , wherein said cutting direction ( 27 ) is along a distal-proximal axis of the device ( 10 ).
4 . The transcatheter device ( 10 ) according to claim 1 , wherein said cutting direction ( 27 ) is perpendicular to said jaw closing axis ( 25 ).
5 . The transcatheter device ( 10 ) according to claim 1 , wherein said scoring structure ( 20 ) comprises sharp or non-sharp protrusions or any combination thereof.
6 . The transcatheter device ( 10 ) according to claim 1 , wherein said cutting element ( 18 ) comprises a sharp edge ( 28 ) movable past a sharp edge ( 30 ) of said first jaw member ( 12 ).
7 . The transcatheter device ( 10 ) according to claim 1 , wherein said cutting element ( 18 ) is a rotational cutting element.
8 . The transcatheter device ( 10 ) according to claim 1 , wherein said cutting element ( 18 ) is an oscillating cutting element.
9 . The transcatheter device ( 10 ) according to claim 1 , wherein said cutting element ( 18 ) is shaped as a tube with a longitudinal cutout portion.
10 . The transcatheter device ( 10 ) according to claim 1 , further comprising a cutter mover ( 34 ) coupled to said cutting element ( 18 ).
11 . The transcatheter device ( 10 ) according to claim 1 , wherein a distal end of said first jaw member ( 12 ) is formed with a cutout window ( 42 ), which defines a sharp edge ( 30 ) of said first jaw member ( 12 ).
12 . The transcatheter device ( 10 ) according to claim 1 , wherein a distal end of said first jaw member ( 12 ) comprises a distal stop ( 44 ) to limit a travel of said cutting element ( 18 ).