Sodegarami

The sodegarami (袖搦, sleeve entangler) is a polearm that was used by the samurai class and their retainers in feudal Japan.

The opposite end of the pole has a metal cap or ishizuki, like those found on naginata and other polearms.

The sodegarami, tsukubō (push pole), and sasumata (spear fork) comprise the torimono sandōgu (three implements of arresting) used by samurai police to capture suspected criminals uninjured.

[1] The sodegarami evolved from the yagaramogara, which was a long pole implement employed by naval forces.

That instrument in turn was derived from the Chinese langxian, which was used to defend against Japanese pirates during the Ming dynasty (1368–1644).