[Cajundaddy]

Get a thick towel.
Open a can of tuna and allow the scent to move about the room. This shouldn't take long.
When cat arrives purring and twining, feed fresh tuna (or favorite treat) while preparing towel.
While cat is still purring lay it down on a towel and tightly wrap cat in towel with all weaponry safely covered and disarmed.
Walk out to garage and place whole cat wrap into crate with more fresh tuna inside.
Head to vet appt.

Learning how to properly wrap a cat is an important personal survival technique.