Medical guide wire
AssigneeAsahi Intecc Co., Ltd.
InventorsTomihisa Kato, Kenjiro Uematsu
Life of this patent
Estimating the term…
Abstract
In a medical guide wire (1), a rigid portion (4A) is located at a distal end of a helical spring (4), and the rigid portion (4A) measures 0.5 mm or less which extends from a top end of a head plug (5) to a rear end of a portion in which the helical spring (4) is secured to the head plug (5), and an intermediary location (11) is secured to an intermediary boss portion (9) of a core line (3) to provide a loosely wound portion (8) from a rear end of the head plug (5) to the intermediary location (11) to be elastically expandable due to a clearence (C) appeared between line element turns of the loosely wound portion (8).
Claims13
A medical guide wire comprising a flexible line wire having a main wire portion, a core line member and a helical spring provided around a distal end of said core line member, a front end of said helical spring being fixedly interfit to a head plug provided at a tip of said core line member;
- whereby a rigid portion is located on a front end of said helical spring, said rigid portion measuring 0.5 mm or less which extends lengthwisely from a top end of said head plug to a rear end of a portion in which said helical spring is fixed to said head plug, and an intermediary location is determined on an intermediary portion of said helical spring in which an intermediary boss portion is secured to said core line member to define a loosely wound portion as an elastically expandable portion from a rear end of said head plug to said intermediary location.
Dependencies are inferred from the claim text.