The Rinser Toothbrush is made by Scott Amron, the same dude who made the keychain key and carabiner key. It’s a similar concept to this fountain brush from 2007, but that that one was never really available, apparently, and the prototypes were $US1750. So, no thanks.
It’s $US22 and up for pre-sale, with a November ship date. [Amron Experimental]