Guide wire for improved replacement heart valve delivery

An improved guidewire may include an elongate shaft including a distal section and a proximal section extending proximally from the distal section. The elongate shaft includes a coiled portion disposed within the distal section. The coiled portion is curved in a first direction in a first plane. The elongate shaft includes a reverse curved portion curved in a second direction opposite the first direction. The reverse curved portion is disposed proximal to the coiled portion. A kit for forming an improved guidewire may include a guidewire having a coiled portion, and a forming tool configured to form a reverse curved portion in the guidewire proximal to the coiled portion. 本发明涉及一种改善导丝，可包括细长轴，细长轴包括远侧部段和从远侧部段朝近侧延伸的近侧部段。细长轴包括设置于远侧部段内的盘绕部分。盘绕部分在第一平面中在第一方向上弯曲。细长轴包括在与第一方向相反的第二方向上弯曲的反向弯曲部分。反向弯曲部分设置于盘绕部分的近侧。用于形成改善导丝的套件可包括具有盘绕部分的导丝，和配置成在导丝中在盘绕部分的近侧形成反向弯曲部分的成型工具。