Initial Human Experience of a Novel Steerable Sheath for AF Ablation with Circumferential PV Isolation | EP Lab Digest
The Vado® Sheath was different from previous sheaths used at our institution, because the steerable design did not require pull-wires to create tip deflection. The 8.8F ID sheath design employs truVectorTM. Technology with a coaxial lumen, an inner shaft and outer shaft, bonded together at the distal tip and attached to two reference locations at the proximal end within the handle. Similar to existing steerable sheaths, tip deflection is achieved by rotating a knob on the sheath handle. In contrast to pull-wire designs, the Vado Sheath handle mechanism creates proximal tension on the inner shaft resulting in unilateral tip deflection since the two shafts are joined distally. This action pulls on the inner shaft, which causes tip deflection up to 270˚ (Figure 2). By eliminating pull-wires, the Vado Sheath provides stable tip deflection during catheter rotations and improves torque transfer to the distal catheter.