Fig. 2

Components of the NHLBI passive guidewire. a This photograph shows two Pebax-coated nitinol segments are joined by a nitinol connector. b The distal tip incorporates a non-resonating coil for mechanical flexion, which is wrapped over the shaped and tapered nitinol rod segment. The distal and proximal ends of the coil are indicated by arrows. Iron oxide markers (dashed arrows) are painted over the tip coil and the Vectran-braided polyimide tubing prior to the application of the final polymer jacketing layer