Operating handle and stent delivery system

An operating handle for holding a delivery catheter including a coaxial inner shaft and an outer shaft, comprising:

• a base body that fixes one of the inner shaft or the outer shaft;
• and
• a slide mechanism that holds the other of the inner shaft or the outer shaft and that slides the other of said inner shaft or outer shaft being held by the slide mechanism so that a relative position between the inner shaft and the outer shaft is shifted;
• wherein:
• the slide mechanism comprises a slide body that slides in a longitudinal direction of the base body;
• the slide body is configured by a plurality of divided bodies of a 1st divided body to a nth divided body, wherein n represents a natural number 2 or more, and the divided bodies are slidable with respect to each other;
• the divided bodies are configured that the divided body is switched so that a driving force for sliding the slide mechanism is sequentially transmitted from the 1st divided body as a most former part to the nth divided body as a most latter part;
• the other of the inner shaft or the outer shaft is connected to the nth divided body as the most latter part;
• and
• a power transmitter that transmits the driving force of the former part of the divided bodies to the latter part of the divided bodies, while the former part of the divided bodies is slid, to integrally slide the former part and the latter part of the divided bodies, is provided.