| 摘要 |
A composite medical device having a titanium, and titanium based alloy, section welded to a ferrous metal section. The weld provides supplementary filler material to alter the proportions of various elements in the weld pool to ensure a strong and reliable weld. Certain fillers, such as nickel or iron, added to the weld pool enable high quality welds to be fabricated utilizing a wide variety of fusion welding techniques between the titanium, or titanium based alloy, section and the ferrous metal section. The sections may include nickel-titanium, also known as nitinol. The sections may be in the form of wires, bars, ribbons, and sheets. The composite medical device of the present invention may include guidewires, stents, right-angle needles, suture passers, retractors, graspers, baskets, and various retrieval devices.
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