Wire-stranded medical hollow tube, and a medical guide wire

• Main Authors: Miyata, Naohiko, Kato, Tomihisa, Miyata, Kenji, Osawa, Toshiya, Matsuo, Kazumi, Kusuda, Ryuji, Nakagoshi, Yoshinobu, Kato, Tadakazu
• Format: Patent
• Language: English
• Published: 19.04.2005

aaaaaaaaaaIn a wire-stranded hollow tube, a plurality of metallic wires preformed with a predetermined forming rate are twisted along a circular line into a careless hollow configuration. When twisting the metallic wires, the neighboring metallic elements are subjected to compression with no gap between the neighboring metallic elements. This increases a contact pressure between the neighboring metallic elements to attain a good tightness with a good circularity and diametrical uniformity secured therebetween, thus preventing the wire-stranded hollow tube from inadvertently collapsing. A tightness is strengthened between the neighboring metallic elements when the metallic elements of different helical pitch are used. By applying the wire-stranded hollow tube to a medical guide wire, a quick torque response and a good torque transmissibility are ensured which lead to a good manipulatability with a favorable follow-on capability.