vasectomy help

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My husband and I went to a consultation this morning. $50 bucks for a Copay later I still don't understand what the hell this doctor was talking about. 
He was saying he performs a non scalpel procedure..... And explained that we still need to use protection for approx 4 months afterwards or until the semen sample shows zero. Etc. 
I asked what does he mean by no scalpel and we got this very basic answer if you will watch a video and it will explain. Video showed nothing. No procedure. It was more if just the same q&a bull that was on the doctors website.  Can anyone help.