Deflectable variable radius catheters
First Claim
1. A catheter comprising a proximal section comprising a shaft and a control section at a proximal end, the control section operably connected to two or more bidirectional control wires and a variable radius control wire;
- and a distal section comprising at desired points along its length at least one electrode, a connection point for the variable radius control wire, and a connection point for the at least two bidirectional control wires, wherein engaging one or more of the bidirectional control causes a left to right motion in the distal section, and wherein engaging the variable radius control wire modifies the radius of the loop.
0 Assignments
0 Petitions
Accused Products
Abstract
The invention provides a deflectable catheter capable of forming many variable radius spiral forms from a single, flexible, distal end section. In one aspect, the catheter employs a variable radius control wire to extend or deform a pre-formed loop structure into a three dimensional spiral-like form or geometry. The ability of a single catheter to create the multitude of shapes and sizes possible allows users to access a greater number of anatomical areas without changing the catheter during a procedure or treatment. In another aspect, the invention encompasses methods of producing deflectable variable radius catheters, where two or more regions of the catheter having common control wires are fused or formed onto one another.
-
Citations
46 Claims
-
1. A catheter comprising
a proximal section comprising a shaft and a control section at a proximal end, the control section operably connected to two or more bidirectional control wires and a variable radius control wire; - and
a distal section comprising at desired points along its length at least one electrode, a connection point for the variable radius control wire, and a connection point for the at least two bidirectional control wires, wherein engaging one or more of the bidirectional control causes a left to right motion in the distal section, and wherein engaging the variable radius control wire modifies the radius of the loop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- and
-
19. A method of forming a desired three dimensional loop form in a catheter distal section, for positioning the catheter in an intracardial or epicardial area, comprising
providing a catheter having at least one control wire and at least one variable radius control wire; -
inserting the catheter into a patient and advancing the catheter end to an epicardial or intracardial position;
engaging at least one control wire; and
engaging the variable radius control wire to modify the radius of a loop form. - View Dependent Claims (20, 21)
-
-
22. A deflectable catheter comprising
a flexible distal end section having a tip or tip electrode and a proximal end having two or more actuators for controlling the shape of the distal end section; -
a first control wire connected to a desired point in a central catheter shaft;
a variable radius control wire connected at or near the tip or tip electrode of the distal end section;
a central catheter shaft connecting the distal end section to the proximal end;
an actuator at the proximal end that engages the first control wire to produce a desired deflection in the distal end section; and
an actuator at the proximal end that engages the variable radius control wire to modify a loop form at the distal end. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
-
Specification