Active system for deflecting a distal portion of a catheter into a hoop configuration
First Claim
1. A system for deflecting a distal portion of a catheter into a substantially hooped configuration, said system comprising:
- an elongated catheter body defining a longitudinal axis and having a proximal portion and a distal portion, with the distal portion being formed with a lumen;
a tube disposed in said lumen and having a wall formed with a plurality of slits, said tube being transformable between a first, relaxed configuration wherein said tube is substantially cylindrical shaped and a second, deflected configuration wherein said tube is substantially hoop shaped;
a deflection wire having a distal end attached to said tube and a proximal end, with said wire being threaded through adjacent slits to hold said wire against the wall of the tube; and
a means operable on the proximal end of said deflection wire for moving said deflection wire axially to a tensioned orientation to transform said tube from the first configuration to the second configuration and reshape the distal portion of the catheter.
1 Assignment
0 Petitions
Accused Products
Abstract
An active system for deflecting a distal portion of a catheter into a hoop configuration includes an elongated catheter body having a proximal portion and a distal portion that is formed with a lumen. A thin-walled tube, which is typically made of a metallic material, is positioned in the lumen. The tube includes a cylindrical wall and includes a plurality of lateral slits that are typically formed in the tube wall and arranged such that the tube can be transformed between a relaxed, cylindrical configuration and a deflected configuration wherein the tube is substantially hoop shaped. One end of a deflection wire is attached to the tube and the other wire end is attached to a reel that is rotationally mounted onto a catheter handle housing. In use, the reel is rotated to axially retract the wire and transform the tube into a hoop configuration.
90 Citations
15 Claims
-
1. A system for deflecting a distal portion of a catheter into a substantially hooped configuration, said system comprising:
-
an elongated catheter body defining a longitudinal axis and having a proximal portion and a distal portion, with the distal portion being formed with a lumen; a tube disposed in said lumen and having a wall formed with a plurality of slits, said tube being transformable between a first, relaxed configuration wherein said tube is substantially cylindrical shaped and a second, deflected configuration wherein said tube is substantially hoop shaped; a deflection wire having a distal end attached to said tube and a proximal end, with said wire being threaded through adjacent slits to hold said wire against the wall of the tube; and a means operable on the proximal end of said deflection wire for moving said deflection wire axially to a tensioned orientation to transform said tube from the first configuration to the second configuration and reshape the distal portion of the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A system for reconfiguring and articulating a catheter while a portion of the catheter is positioned in a body conduit of a patient, said system comprising:
-
an elongated catheter body having a distal portion and a proximal portion, with the catheter body being formed with a lumen; a tube disposed in said lumen and having a wall formed with a plurality of slits, said tube being transformable between a first, relaxed configuration wherein said tube is substantially cylindrical shaped and a second, deflected configuration wherein said tube is substantially hoop shaped; a means for deflecting said proximal portion in a first direction and in a second direction, wherein said first direction is coplanar and opposite to said second direction; a deflection wire attached to said tube, with said wire being threaded through adjacent slits to hold said wire against the wall of the tube; and a means operable on said deflection wire for moving said deflection wire to a tensioned orientation to transform said tube from the first configuration to the second configuration and reshape the distal portion of the catheter to form a hoop-shaped lesion during cryogenic treatment. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
Specification