[Rogozhin]

Here's an example - 彼は彼女を起こさずに、部屋を去った。　(He left the room without waking her up). Whatever immediately precedes the 起こさずに becomes the subject (another eg. 赤ちゃんを起こさずに通ってください　- Please pass by without waking the baby). I've only heard it used as a past tense phrase.

起こさずに can also mean "without causing". Eg. 喧嘩を起こさずに相談した　- Discussed without causing an arguement.