The sonic probe was a device used by the future Amy Pond. It had the ability to re-wire the Handbots, and the Doctor later took control of it in order to help bring the two Amy's together. During the latter, Amy admitted it was a sonic screwdriver. (DW: The Girl Who Waited)
Dalek Sec called the Doctor's sonic screwdriver a sonic probe. (DW: Doomsday) Presumably, 'Sonic probe' is a catch all term for sonic devices such as the Doctor's screwdriver