You mean "vaginal penetration". "Perforation" means "to put holes in something". "Penetration" means to "put something into a hole".
One does not put a hole in a vagina. Vaginas come already equipped with holes and one puts something in them.
I think it's important to use the correct word to describe an action.
Maybe its me just waking up but this made me laugh. Such a clinical description of of the creation of a hole vs already have a hole hahaha...I wonder if this has ever been used in English class somewhere