Abstract: A catheter handle for a steerable catheter. A catheter tube is connected to the catheter handle. A steering wire has a center point and two legs, the center point is affixed to a distal tip of the catheter tube, and each of the two legs of the steering wire is affixed to a respective rack of a pair of racks inside the catheter handle. Each of the racks of the pair of racks is toothed and slidable and the racks are mounted in opposition to each other within the catheter handle. A first gear is disposed between the racks and a gear train is positioned to engage the first gear. The gear train is sized to provide a transmission gain to the first gear. A knob is attached to the gear train and operating the knob rotates the gear train to engage the first gear and causes the racks to slide in opposite directions thereby pulling one of the two legs to deflect a distal end of the catheter tube.

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.