Abstract: A control handle for a steerable catheter. A housing with a hollow interior region has a rotatable lever mechanism. Features are formed in the housing and on the lever mechanism for routing and affixing the catheter guidewire and to provide tension on the guidewire in a push/pull operation.

Abstract: A steerable catheter. A catheter tube is connected to a catheter handle. A steering wire has a center point affixed to the distal tip of the catheter tube, and each leg of the steering wire is affixed to respective racks inside the catheter handle. The racks are toothed and slidable and are mounted in opposition to each other within the catheter handle. A gear is disposed between the toothed racks and a knob is attached to the gear. Operating the knob rotates the gear and causes the racks to slide in opposite directions thereby pulling one of the steering wire legs to deflect the distal end of the catheter tube.