Patent ID: 8961434
Filing Date: 2015-02-24
Classification: A61M

Abstract:
1. A medical guidewire comprising: a core shaft including a distal end portion having a small diameter; an outer flexible tube that surrounds an outer periphery of the core shaft; an inner flexible tube disposed in the outer flexible tube surrounding the distal end portion of the core shaft, the guidewire being configured to have a first spacing of a gap between the inner flexible tube and the outer flexible tube, and to have a second spacing of a gap between the core shaft and the inner flexible tube, wherein the first and second spacings are varied along a length of the core shaft; a first joint that joins together: i) a distal end of the core shaft, ii) a distal end of the outer flexible tube, and iii) a distal end of the inner flexible tube; and at least one second joint that does not join the core shaft and joins the outer flexible tube to the inner flexible tube.