Heart valve treatment members with changeable orientation
A device ( 30 ) for fracturing calcifications in heart valves includes a first heart valve treatment member ( 12 ) that extends from a first shaft ( 20 ) and which includes a scoring portion ( 16 ). A second heart valve treatment member ( 32 ) extends from a second shaft ( 36 ) and has a counterforce member ( 34 ). The second heart valve treatment member ( 32 ) and counterforce member ( 34 ) are coupled to the second shaft ( 36 ) with a brace ( 35 ) arranged to bear a force applied by scoring portion ( 16 ) to the counterforce member ( 34 ).
1 . A heart valve treatment device comprising:
a first heart valve treatment member that extends from a first shaft and which comprises a scoring portion;
a second heart valve treatment member that extends from a second shaft and which comprises a counterforce member; and
wherein said first and second heart valve treatment members are delivered over a guidewire;
wherein said second heart valve treatment member and said counterforce member are coupled to said second shaft with a brace arranged to bear a force applied by said scoring portion to said counterforce member; and
wherein an upper portion of said second shaft is coupled by a link member to a lower portion of said second shaft such that said guidewire is visible between said upper and lower portions of said second shaft.
2 . The heart valve treatment device according to claim 1 , wherein said brace is tilted with respect to said counterforce member.
3 . The heart valve treatment device according to claim 1 , wherein an upper portion of said second shaft is coupled by a link member to a lower portion of said second shaft.
4 . The heart valve treatment device according to claim 1 , wherein said scoring portion is arcuate.
5 . The heart valve treatment device according to claim 1 , wherein said scoring portion extends from arms of a frame that extends from said first shaft.
6 . The heart valve treatment device according to claim 5 , wherein said scoring portion and said frame form a closed arcuate structure.
7 . The heart valve treatment device according to claim 1 , wherein said counterforce member is bent or bendable to align with said scoring portion.
8 . The heart valve treatment device according to claim 1 , wherein said first and second heart valve treatment members are disposed on said guidewire.
9 . The heart valve treatment device according to claim 1 , wherein said counterforce member and said scoring portion are not parallel to said guidewire.
10 . The heart valve treatment device according to claim 1 , wherein one of said first and second heart valve treatment members comprises a blade.