How does Kisuke Urahara release his Zanpoktou?

Answer 1

Kisuke Urahara's zampacto name is Benihime, The "Red Princess" or the "Crimsom Princess". When he wants to relese it he says "Awaken, Benihime"

He sword has two main defenses,

1) His blood mist shield, "Chikasumi no Tate" It was able to block Ichigo's first Getsuga Tenshō .

2) A Unnamded offensive abilty, he calls this and say "Scream, Benihime" The attack is a little like ichigo's one but its diffrent. This attack can stop Yammy's bala.

Kisuke Urahara also has a banki, but it has never been used it the series, it has been mentionded, and he got it the same way Ichigo did, by using the Tenshintai. He go Banki in the same 3 days he inventded it.

Benihime is also one of the few female zampacto spirt ownded by a man.

- Hope that helped