Guide wire

摘要

A guide wire includes an elongate wire body, and a marker at least at a distal-side portion of the wire body over the whole circumference to indicate the intracorporeal position of the wire body. The marker has a first line-forming portion and a second line-forming portion which intersect each other at a plurality of locations so that the marker has a grid-like shape as a whole. According to another aspect, a guide wire includes a member with a core wire, a marker-forming layer partly encircling the outer surface of the member and differing in color from the member, and a coating layer covering the marker-forming layer and the member at least in the marker-forming layer region and having transparency making the marker-forming layer visible. The marker-forming and coating layers can be formed from mutually miscible resins, while the marker-forming layer functions as a visible marker.

主权项

1. A guide wire positionable in a patient's body comprising:
an elongate wire member possessing a circumference and a longitudinal extent from a distal end of the wire member to a proximal end of the wire member; an endoscopically-visible first line-forming marker portion and an endoscopically-visible second line-forming marking portion which are both positionable in the patient's body so that the first line-forming marker portion and the second line-forming marker portion positioned in the patient's body together with an endoscope are viewable outside the patient's body by way of the endoscope, the first line-forming marker portion and the second line-forming marker portion together indicating an intracorporeal position of the guide wire; the first line-forming marker portion extending helically around the outer circumference of a first part of the longitudinal extent of the wire member in a first rotational direction, the first line-forming marker portion extending circumferentially around the wire member plural times, with adjacent windings of the first line-forming marker portion being spaced apart from one another; the second line-forming marker portion extending helically around the outer circumference of the first part of the longitudinal extent of the wire member in a second rotational direction opposite the first rotational direction, the second line-forming marker portion extending circumferentially around the wire member plural times, with adjacent windings of the second line-forming marker portion being spaced apart from one another; the first line-forming marker portion intersecting the second line-forming marker portion at a plurality of spaced apart intersecting locations, a height of the intersecting locations being greater than a height of the portions of the first line-forming portion and the second line-forming portion exclusive of the intersecting locations, and portions of the first part of the longitudinal extent of the wire member being uncovered by the first line-forming marker portion and the second line-forming marker portion; and a transparent cover layer covering the first line-forming marker portion and the second line-forming marker portion, the cover layer possessing an undulating outer surface.