How to impregnate someone after a vasectomy? ?

I'm considering a vasectomy just for the shear sake of making sure there is never any "accidents." Condoms just ain't enough to keep my thinking that will protect. I'm aware that reversing a vasectomy is a near SCAM and rarely works, but I was wondering if it is possible when I do want to have a child, to have a procedure that might be able to extract sperm from the testicles directly or something? What ways exist?