Patent ID: 6716183
Filing Date: 2004-04-06
Classification: A61B,A61M

Abstract:
A urological guidewire, comprising:a core having a distal end with a diameter, the core being formed of a first metallic material and extending toward an end of the guidewire; a coil including a plurality of convolutions extending around the core at the end of the guidewire, the coil being formed of a second metallic material different from the first metallic material; a mechanical interlock having a bent portion formed between the coil and the core providing a mechanical attachment of the core to the coil, the mechanical interlock further comprising an enlargement having a fixed relationship with the end of the core and having a lateral dimension greater than the diameter of the core at the distal end of the core, and a bonding material fixing the enlargement to the coil to mechanically bond the core to the coil; a penultimate convolution included among the plurality of convolutions, the penultimate convolution having a first radius of curvature; and an ultimate convolution included among the plurality of convolutions, the ultimate convolution having a second radius of curvature less than the first radius of curvature to form a bridge across the penultimate convolution.