초록 ▼

A catheter, which is adapted to be inserted into a body lumen, comprises a symmetrical cylindrical control handle, an elongate tubular catheter body, and a flexible catheter tip having a lumen offset from the axis of the catheter tip. The control handle comprises a housing having a piston chamber at

A catheter, which is adapted to be inserted into a body lumen, comprises a symmetrical cylindrical control handle, an elongate tubular catheter body, and a flexible catheter tip having a lumen offset from the axis of the catheter tip. The control handle comprises a housing having a piston chamber at its distal end. A piston is mounted in the piston chamber and is afforded lengthwise movement. The proximal end of the catheter body is fixedly attached to the distal end of the piston. A puller wire is attached to the housing and extends through the piston, through and coaxial with the catheter body and into the offset lumen of the catheter tip where it is attached to the wall of the catheter tip. Lengthwise movement of the piston relative to the housing results in deflection of the catheter tip.

대표청구항 ▼

A steerable catheter comprising: a flexible, elongated catheter body having proximal and distal ends and a first lumen; a flexible catheter tip fixedly attached to the distal end of the catheter body, said tip comprising a second lumen, the axis of the second lumen being offset from the axis of the

A steerable catheter comprising: a flexible, elongated catheter body having proximal and distal ends and a first lumen; a flexible catheter tip fixedly attached to the distal end of the catheter body, said tip comprising a second lumen, the axis of the second lumen being offset from the axis of the tip; a control handle at the proximal end of the catheter body, said control handle comprising: a housing having proximal and distal ends and a piston chamber at its distal end; a piston having proximal and distal ends and a longitudinal bore therethrough mounted in the piston chamber of the housing and moveable longitudinally within the piston chamber, wherein the proximal end of the catheter body is fixedly attached to the distal end of the piston; and means proximal to the piston, for securing the proximal end of a puller wire to the housing; an elongated puller wire having a proximal end fixedly attached to the securing means at a location proximal to the piston chamber, said puller wire extending through the bore of the piston, the first lumen of the catheter body and into the second lumen of the catheter tip, said puller wire further comprising a distal end fixedly attached to the catheter tip; and whereby longitudinal movement of the piston relative to the housing results in deflection of the catheter tip.