Terumo Kabushiki Kaisha

Noriyuki Tamai

Hiroshi Yagi

Katsuhiro Shirakawa

Yutaka Tano

Jun Iwami

Akihiko Umeno

Yousuke Nabeshima

Tomokane Kurosawa

Satoru Kanuka

Ryuuichi Watanabe

Chikei Shinohara

A guide wire includes: a flexible elongate wire body; and a coating layer that covers a distal portion of the wire body and is formed of a resin material. The wire body of the guide wire is provided with a projection that protrudes along the entire circumference of an outer circumferential portion of the wire body. A distal portion of the projection is in contact with a proximal portion of the coating layer, and the maximum outside diameter of the projection is larger than the outside diameter of the coating layer that is in contact with the projection. In addition, a proximal portion of the projection has an outside diameter tapering portion where the outside diameter is gradually reduced toward a proximal end.

Guide wire

The guide wire is a guide wire includes a distal portion and a main body portion. This guide wire is provided with a first curve portion; a second curve portion included on the distal side of aforesaid first curve portion and curved to the opposite direction with respect to aforesaid first curve portion; a third curve portion included on the distal side of aforesaid second curve portion and curved to the opposite direction with respect to aforesaid second curve portion, wherein a line contacting with both aforesaid first curve portion and aforesaid third curve portion has an obtuse angle with respect to an axis line of aforesaid main body portion.

A medical guide wire includes a core wire having a distal portion, and a cover portion formed of a resin for covering at least the distal portion of the core wire, and is provided with a distal shape portion having a curved portion, wherein the distal portion of the core wire includes a tapered portion continuously varied in outside diameter, and a distal flexible portion provided on the distal side of the tapered portion, and the wire diameter variation rate at the tapered portion is 40 to 55%.

Medical guide wire

Guide wire for catheter

A guide wire is configured to have a less lossy marker formed at a desired position and providing a relatively high degree of contrastability under X-ray fluoroscopic guidance or the like. The guide wire includes a linear core member, a resin layer covering a main body portion of the core member, and a contrasting portion covering the distal end portion of the core member. The resin layer contains a color developing agent which develops color by laser light irradiation, and a contrast agent composed of a metal oxide powder. The contrasting portion is made from a resin containing a contrast agent composed of a metal powder and has a contrasting function higher than the resin layer. A visible marker is formed on the outer surface of the resin layer through color development of the color developing agent by irradiating the surface of the resin layer with laser light.

Growing community of inventors

Shizuoka, Japan

Noriyuki Tamai