US 11,653,970 B2
Plasma guide wire
Tadahiro Koike, Seto (JP)
Assigned to ASAHI INTECC CO., LTD., Seto (JP)
Filed by ASAHI INTECC CO., LTD., Seto (JP)
Filed on Nov. 8, 2019, as Appl. No. 16/677,758.
Application 16/677,758 is a continuation of application No. PCT/JP2017/023928, filed on Jun. 29, 2017.
Prior Publication US 2020/0069361 A1, Mar. 5, 2020
Int. Cl. A61B 18/14 (2006.01); A61B 17/22 (2006.01); A61B 18/04 (2006.01); A61M 25/09 (2006.01)
CPC A61B 18/14 (2013.01) [A61B 17/22 (2013.01); A61B 18/042 (2013.01); A61M 25/09 (2013.01); A61B 2017/22042 (2013.01); A61M 2025/09083 (2013.01); A61M 2025/09108 (2013.01); A61M 2025/09175 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A plasma guide wire comprising:
a core shaft;
a coil wound around an outer periphery of a region of a distal end side of the core shaft;
a tip joined to a distal end of the core shaft and a distal end of the coil;
a coil-core shaft joining region joining a proximal end of the coil with the core shaft;
a first insulating resin tube disposed on an outer periphery of the coil and extending proximally from the tip to beyond the coil-core shaft joining region;
a second insulating resin tube disposed around an outer periphery of the core shaft, and extending proximally relative to the proximal end of the first insulating resin tube to a proximal side of the core shaft, the second insulating resin tube being harder than the first insulating resin tube;
a third insulating resin tube disposed on at least a portion of a region of an inner periphery of the first insulating resin tube, the region being located proximal to a position facing the proximal end of the coil.