Patent ID: 8540139

Claim:
A flat box for storing a medical device comprising: a first panel having an upper edge, a lower edge, a first side edge, and a second side edge; a second panel hingedly connected with said lower edge of said first panel, said second panel being foldable over said first panel for defining a storage compartment; a first side flap hingedly connected with said first side edge of said first panel and being foldable over and interlockable with said second panel for closing a first side of said box; a second side flap hingedly connected with said second side edge of said first panel and being foldable over and interlockable with said second panel for closing a second side of said box; a cover hingedly connected with said upper edge of said first panel for moving between an open position for providing access to said storage compartment and a closed position for closing said storage compartment, said cover having a free edge including a plurality of cover locking tabs projecting from said free edge, and each of said first and second side flaps and said second panel including at least one cover locking slit that is adapted to receive at least one of said cover locking tabs, wherein when in the closed position said cover is folded over said first and second side flaps and said second panel, and said cover locking tabs are mechanically interlocked with said cover locking slits on said first and second side flaps and said second panel, wherein said cover locking tabs include first and second central locking tabs and first and second outer locking tabs that are located outside said central locking tabs, and wherein said first and second central locking tabs are hingedly connected with said cover via fold lines disposed at said free edge of said cover and said first and second outer locking tabs are more rigidly connected with said free edge of said cover than said first and second central locking tabs.