Device for administering an active principle by the oral mucosal route

A device for administering an active principle via the oral mucous membrane, the device being characterized in that it comprises:

• an ampule containing a liquid, said ampule including a single opening that defines a peripheral axial edge and that is closed by a film;
• a syringe barrel provided with a dispenser orifice for dispensing said at least one active principle on the gum/cheek mucous membranes;
• a piston contained in said syringe barrel;
• a piston rod connected to said piston for moving said piston in said syringe barrel;
• and
• a connector that is formed integrally with or fastened to said syringe barrel, said connector being adapted to be connected in leaktight manner to said ampule, said connector including an inner perforator for perforating said film of said ampule and for connecting the inside of said ampule with said syringe barrel, said inner perforator forming said dispenser orifice of the syringe barrel while the active principle is being dispensed on said gum/cheek mucous membranes, said connector further including an outer protective skirt for creating a gum/cheek cavity by moving the cheek mucous membrane away from the gum mucous membrane while said liquid is being deposited and completely absorbed, said outer protective skirt surrounding said inner perforator, and said connector including an annular reception space for receiving said peripheral axial edge of said ampule, said annular reception space being defined between the inner perforator and said outer protective skirt.