I've never heard of such a thing' but that doesn't mean they don't exist.
I have seen people bolt a standard circular (Skill saw) to the bottom of a piece of plywood and make a plunge cut that allows the blade to protrude to the top side. It forms a table saw of sorts but, seems rather dangerous to me.
I think you would want to wire a switch that is readily accessible, but still without a fence or blade guard, disaster looms near by.
Regular 10" table saws are a lot different than a scroll saw and are inherently more dangerous but quite handy for cutting big pieces into small pieces. I've owned one for more than 10 years and couldn't do without it.
However they do take quite a bit of room in the shop which is probably your problem I gather. Cost is also something to consider but as is oft said "You get what you pay for."
I recommend that you go for the real deal and by a saw that will do the job in a safer manner than playing with a toy that will still cut off a finger.