Patent ID: 11896780
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A deflection catheter comprising:
(a) a catheter shaft including an outer member having a first center lumen, the outer member being flexible;
(b) an inner stiffener member extending through the first center lumen of the outer member, the inner stiffener member being translatable through the catheter shaft to vary a longitudinal position of the inner stiffener member relative to the catheter shaft, the catheter shaft having a length extending distally beyond the inner stiffener member disposed inside the catheter shaft, the inner stiffener member extending along a longitudinal axis, the inner stiffener member having a second center lumen and an uneven distal end, the uneven distal end including a first distal most surface and a second distal most surface, the second distal most surface being spaced radially from the first distal most surface and separated a distance along the longitudinal axis from the first distal most surface;
(c) a first puller wire extending through the second center lumen of the inner stiffener member and configured to deflect the outer member using the first distal most surface at a first deflection initiation location;
(d) a second puller wire extending through the second center lumen of the inner stiffener member and configured to deflect the outer member using the second distal most surface at a second deflection initiation location, the second deflection initiation location being spaced along the longitudinal axis from the first deflection initiation location; and
(e) a deflection curvature adjustment handle comprising a body with a piston chamber, and a piston coupled to the inner stiffener member to impart longitudinal movement to the inner stiffener member, the piston chamber having a plurality of detents formed on a longitude along an inner radial surface of the piston chamber, the plurality of detents being longitudinally spaced apart from each other at separate longitudinal positions, each detent of the plurality of detents being configured to engage with a plunger disposed on an outer radial surface of the piston depending on a position of the piston in the piston chamber such that the plunger and the plurality of detents cooperate to provide predetermined discrete deflection curvatures.