CodeIgniter中的常规对象

I need create a general object for using it in some controller, but I don't know how.

This object is a class that have a parameters, constructor and getters/setters but I can't access in other controller.

Can you help me?

You mean model, and here you have everything about it.

Just create class file in /application/libraries and then in controller constructor add loader:

$this->load->library('YOU_FILENAME_IN_LOWERCASE');