Medical leading wire and manufacture thereof
A technology of guiding wires and core wires, applied in the direction of guiding wires, catheters, etc., to reduce the burden and reduce the effect of invasion
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[0063] In the following detailed description of the embodiments, the same reference numerals are used for the same kind of structural features.
[0064] Referring to FIGS. 1 to 4, there is shown a medical guide wire 1 according to a first embodiment of the present invention. The medical guide wire 1 (hereinafter simply referred to as "guide wire 1") has an elongated core wire 2 and is sheathed in a thin A helical spring 3 on the outer surface of the distal portion 21 of the long core wire 2 . The elongated core wire 2 is made of stainless steel wire and its distal portion 21 is about 300 mm in length, while the remaining guide wire 1 acts as a proximal portion 22 extending in length by about 1200 mm or about 2700 mm.
[0065] The distal portion 21 has a large tapered portion 23 of a taper, a small tapered portion 24 of a taper, a cylindrical portion 25, a small tapered portion 26 of a taper and a multi-step flat portion 27 (for example, from the far The thickness from the end...
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