Medical device for navigation through anatomy and method of making same

摘要

Medical devices for navigation through anatomy, including guidewires, which may have a core wire, a slotted tubular member, or both. Embodiments may have coils, including non-circular cross-section edge-wound marker coils, extended coil tips, and soldered or glued mesial joint coils. Core wires may have a step, ridge, or taper at the joints to the tubular member, and may be flattened at the distal tip. Radiopaque material may be located inside the tubular member, and the distal tip may be heat treated to make it shapeable. Additional tubular members or coils may be used concentrically or in line and may enhance flexibility, provide radiopacity, reduce friction, or reduce material or manufacturing cost. Tubular members may be chamfered or tapered continuously or incrementally. Slots may be arranged in groups, such as groups of three, and may be equal in depth or unequal in depth to provide a steerable or compressible tip.

主权项

1. A medical device, comprising:
a core member having a proximal end region and a distal end region; a tubular member disposed over the distal end region of the core member, the tubular member having a plurality of slots formed therein, a longitudinal axis, a proximal end, and a distal end; wherein the distal end region of the core member is bonded to the tubular member with a bonding material at a plurality of discrete bonding points that each contact the tubular member and the core member, the bonding material being selected from a group comprising adhesive and solder; and wherein the plurality of discrete bonding points includes first bonding point along distal end region of the core member and an intermediate bonding point that is spaced from the proximal end and the distal end of the tubular member.