Unidirectional catheter control handle with tensioning control
AssigneeBiosense Webster (Israel) Ltd.
InventorDebby Grunewald
Life of this patent
Estimating the term…
Abstract
A catheter includes a tip electrode with a shell and a support member to provide a plenum chamber. The plug is formed with a U-shaped passage for a safety line to wrap around and secure the support member (with the shell affixed thereto) to the catheter. Additional passages are formed in the plug to accommodate components such as irrigation tubing, lead wire and thermocouple wire pair. A method of manufacture provides distal installation and/or anchoring of the safety line, lead wire and thermocouple wire pair in the support member prior to sealing the support member and mounting the shell.
Claims15
A catheter, comprising:
- a flexible tubing;
- and
- a control handle proximal of the flexible tubing, the control handle having:
- a barrel housing having a raised surface region including a track;
- a piston disposed through the barrel housing in a telescopic configuration with the barrel housing, the piston having a thumb control, the piston configured for longitudinal movement relative to the barrel housing by a user via the thumb control for deflecting the flexible tubing;
- and
- a tension adjustment assembly including:
- a force member adapted for applying a force on the piston;
- and
- a knob rotationally coupled to the force member, the knob adapted for rotation by the user to adjust the force applied on the piston by the force member, the knob including a pin extending from an inner surface of the knob and into the track.
A catheter, comprising:
- a flexible tubing;
- a control handle proximal of the flexible tubing, the control handle having:
- a barrel housing having a raised surface region including a track;
- a piston disposed through the barrel housing in telescopic arrangement with the barrel housing, the piston having a thumb control, the piston configured for longitudinal movement relative to the barrel housing by a user via the thumb control for deflecting the flexible tubing;
- and
- a tension adjustment assembly including:
- a set screw adapted to apply a force on the piston;
- and
- a knob mounted on the barrel housing and having an axial bore receiving a portion of the set screw, the knob and the set screw being rotationally coupled to each other, the knob including a pin extending from an inner surface of the knob and into the track,
- in which the knob is adapted for rotation by the user to adjust the force applied by the set screw on the piston.
A catheter, comprising:
- an elongated catheter body;
- an intermediate deflectable section;
- and
- a control handle proximal of the catheter body, the control handle having:
- a barrel housing and a piston, the barrel housing having a raised surface region including a track, the piston having a thumb control, the barrel housing and the piston configured for longitudinal movement relative to each other by a user via the thumb control for deflecting the intermediate section;
- an adjustment assembly including:
- a set screw configured for a frictional engagement with the piston;
- and
- a knob mounted on the barrel housing and rotatably coupled to the set screw, the knob being rotatable in one direction to increase the frictional engagement and rotatable in an opposition direction to decrease the frictional engagement, the knob including a pin extending from an inner surface of the knob and into the track,
- in which increasing the frictional engagement locks the piston and the barrel housing in a desired position and decreasing the frictional engagement unlocks the piston and the barrel housing and allows repositioning of the piston and the barrel housing relative to each other.
Dependencies are inferred from the claim text.