Catheter with adjustable deflection sensitivity
First Claim
1. A bi-directional catheter comprising:
- a catheter body;
a deflectable tip section distal the catheter body;
tensile puller members; and
a control handle proximal the catheter body, the control handle having;
a deflection member adapted for user manipulation;
a deflection assembly responsive to the deflection member to draw on one of the tensile puller members for deflecting the tip section, wherein the deflection assembly comprises two diametrically opposed pulleys separated from each other by a diametric separation distance which is adjustable between a maximum diametric separation for minimum deflection sensitivity in the deflection member and a minimum diametric separation for maximum deflection sensitivity in the deflection member; and
a deflection sensitivity knob adapted to adjust sensitivity of the deflection member to manipulation of the deflection member by adjusting the diametric separation distance between the two pulleys.
1 Assignment
0 Petitions
Accused Products
Abstract
A catheter that provides bi-directional steering and allows for deflection sensitivity adjustment includes a catheter body, a deflectable tip section and a control handle, wherein the control handle has a deflection member adapted for user manipulation, a deflection assembly responsive to the deflection member to draw on a tensile puller member for deflecting the tip section, and an adjustment mechanism adapted to adjust sensitivity of the deflection member. The adjustment mechanism also correspondingly adjusts a maximum degree of deflection of the tip section. The deflection assembly includes a rotatable pulley arm and two pulleys, and a deflection sensitivity adjustment mechanism with a cam device that varies a separation distance between the pulleys. The cam device is internally located in the pulley arm and is rotatable via deflection sensitivity knob by the user to increase the separation distance for greater deflection sensitivity in a deflection member user interface, or to decrease the separation distance for greater maximum degree of tip deflection.
-
Citations
18 Claims
-
1. A bi-directional catheter comprising:
-
a catheter body; a deflectable tip section distal the catheter body; tensile puller members; and a control handle proximal the catheter body, the control handle having; a deflection member adapted for user manipulation; a deflection assembly responsive to the deflection member to draw on one of the tensile puller members for deflecting the tip section, wherein the deflection assembly comprises two diametrically opposed pulleys separated from each other by a diametric separation distance which is adjustable between a maximum diametric separation for minimum deflection sensitivity in the deflection member and a minimum diametric separation for maximum deflection sensitivity in the deflection member; and a deflection sensitivity knob adapted to adjust sensitivity of the deflection member to manipulation of the deflection member by adjusting the diametric separation distance between the two pulleys. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A catheter adapted for bi-directional deflection, the catheter comprising:
-
a catheter body; a tip section distal the catheter body; a deflection member adapted for user manipulation; a control handle proximal the catheter body; and first and second tensile puller members extending between the tip section and the control handle, wherein the control handle includes;
a deflection assembly responsive to the deflection member to draw on one of the first or second tensile puller members for deflecting the tip section, the deflection assembly having a pulley arm rotatable about an axis, the deflection assembly including two pulleys at diametrically opposed locations across the axis and separated from each other by a diametric separation distance which is adjustable between a maximum diametric separation for minimum deflection sensitivity in the deflection member and a minimum diametric separation for maximum sensitivity in the deflection member, each of the first and second tensile puller members extending through the deflection assembly and trained on a respective one of the two pulleys for deflecting the tip section; anda deflection sensitivity knob including a cam device adapted to adjust the diametric separation distance between the pulleys. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification