US Patent 7896567 Dispensing toothbrush

An electrically driven dispensing device, particularly a toothbrush, utilizing replaceable pressurized cartridges, of the bag-in-can type. The toothbrush has a ‘top-loading’ structure in which the cartridge is housed in a recess at the brush end of the toothbrush handle, the recess being accessible by removing the brush head. Other features include an elastomeric valve outlet located on the brush head which can also function as a tooth wiping or polishing blade, and a non-linear drive shaft which enables the brush head to be driven from a motor located at the base end of the handle whilst keeping the handle slim in design.