Patent attributes
A staple cartridge provided with a cartridge main body and a refill contained with connected staples. The refill is interchangeably attached to the cartridge main body. A guide portion for guiding the connected staples at an inside of the refill to a staple strike out portion is provided between a refill mounting portion and the staple strike out portion. Lower portions of the guide portion and the refill mounting portion are respectively arranged with a first actuator operated in accordance with a presence/absence of the connected staples at an inside of the guide portion and a second actuator provided in accordance with a presence/absence of the connected staples at an inside of the refill mounting portion. The first actuator and the second actuator are interlocked.