Storage containers serving for medical purposes slurry

A storage container (1) for a medical purpose, in particular ultrasound guided periodontal treatment, tooth cleaning or tooth preparation, serving slurry comprises a flexible bag (2), the interior of which a filling and emptying nozzle (5) is accessible. In the interior of the bag (2) is a spacer body (6), is incorporated in a groove system (8, 9, 10). The groove system communicates with the interior of the filling and outlet nozzle (5). If the bag (2) (1) pressed this storage container upon removal of the slurry contained in it flat, the opposite sides (3, 4) of the bag (2) to the spacers (6) come to rest in the final stages of emptying , However, in this contained groove system (8, 9, 10) remains free and forms a path through which the last remnants of the slurry reliably from the bag (2) can be removed.