Reservoir filling device

Abstract

The invention relates to a filling device for a reservoir which reservoir is to be filled from a cartridge such as cartridges having rigid walls e.g. made of glass and provided with a membrane which can be penetrated by a needle for protection of the entrance. According to the present invention the filling device comprises—a housing ( 1 ) which housing ( 1 ) comprises—a first position means adapted to receive a reservoir ( 2 ) for a delivering device,—a second position means adapted to receive a cartridge ( 3 ) containing a liquid,—a unit ( 4 ) providing a flow path when both the reservoir ( 2 ) and the cartridge are received respectively by the first and second positions means,—a venting unit ( 5, 5 a, 5 b ) providing access of gas to the cartridge ( 3 ) during emptying of the cartridge ( 3 ). The filling device is characterized in that at least a part of the venting unit ( 5 ) is placed off the rotational centre (rc) of the housing and is attached to a part ( 7 ) which part ( 7 ) can rotate relative to the housing ( 1 ).

1 . Filling device comprising:
 a housing ( 1 ) comprising
 first position means portion adapted to receive a reservoir for receiving liquid, 
 second portion adapted to receive a cartridge containing a liquid, 
   a unit unreleasably attached to the housing and providing a flow path between the reservoir and the cartridge when both the reservoir and the cartridge are received respectively by the first and second portions,   a venting unit comprising a penetrating member penetrating a membrane covering an entrance of the cartridge and providing access of gas to the cartridge during emptying of the cartridge, the penetrating member positioned off the rotational centre of the housing; and   a rotary part the penetrating member attached to the rotary part, the rotary part rotatable around the unit rotatable relative to the housing.   
     
     
         2 . Filling device according to  claim 1 , wherein the unit providing the flow path between the reservoir and the cartridge, when the cartridge is placed according to the second position means, comprises a needle having two pointed ends. 
     
     
         3 . Filling device according to  claim 1 , wherein the unit providing the flow path is placed along the rotational centre of the housing. 
     
     
         4 . Filling device according to  claim 3 , wherein the unit is fastened unreleasably to or is a part of a wall in the housing, the wall separating the first portion from the second portion. 
     
     
         5 . Filling device according to  claim 1 , wherein the rotary part comprises a circular plate periphery in proximity of or in slidable contact with a wall of the housing. 
     
     
         6 . Filling device according to  claim 5 , wherein the circular plate moves in a track formed in the wall of the housing. 
     
     
         7 . Filling device according to  claim 5 , wherein the periphery of the circular plate is provided with a track formed along the periphery, the track corresponds to one or more protruding part(s) of the housing. 
     
     
         8 . Filling device according to  claim 5 , wherein the circular plate comprises a friction layer wherein the friction layer prevents the cartridge from moving relative to the circular plate. 
     
     
         9 . Filling device according  claim 1 , wherein the venting unit comprises a venting needle providing access from outside the cartridge to an interior portion of the cartridge during use. 
     
     
         10 . Filling device according  claim 9 , wherein the venting unit comprises a venting valve providing a one-way passage of clean gas into a room wherefrom the venting needle is provided with clean gas. 
     
     
         11 . Filling device according to  claim 10 , wherein the venting needle is attached to the rotary part providing a flow path for clean gas from one side of the rotary part to the other and the venting valve is attached to an open end of the venting needle pointing away from the cartridge. 
     
     
         12 . Filling device according to  claim 10 , wherein the venting needle is attached to the rotary part providing a flow path for clean gas from one side of the rotary part to the other and the venting valve is attached to a wall of the housing proving access of clean gas from outside wall of the housing to the inside of the wall of the housing. 
     
     
         13 . A kit combining a filling device according to  claim 1  and a cartridge containing liquid, the filling device non removably joined to the cartridge or removably connected to the cartridge.