John A. Simpson,Raleigh A. Purtzer,Matthew J. Gillick
申请号：
US14042321
公开号：
US20150094690A1
申请日:
2013.09.30
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A method of making a core metal element for a medical guidewire comprising providing a wire of nickel titanium alloy having a length that includes a proximal portion having a first diameter and a distal portion having a second diameter. Applying cold work to the distal portion and not applying cold work to the proximal portion, thereby imparting to the distal portion a third diameter that is smaller than the second diameter and then applying a reducing process to the wire whereby the proximal portion is reduced to have a fourth diameter that is less than the first diameter.
