VALVELESS DRUG DELIVERY DEVICE
A drug delivery device ( 10 ) comprising a drug reservoir ( 13 ), at least one dispensing hole ( 14 ), an actuator system ( 17 ) and an exit path ( 15 ). The drug reservoir ( 13 ) is provided for comprising a drug. The dispensing hole ( 14 ) delivers the drug to an environment of the drug delivery device ( 10 ) when the actuator system ( 17 ) pushes the drug from the drug reservoir ( 13 ) through the dispensing hole ( 14 ). The exit path ( 15 ) couples the drug reservoir ( 13 ) to the dispensing hole ( 14 ). The exit path ( 15 ) comprises at least one entry point ( 16 ) for coupling the exit path ( 15 ) to the drug reservoir ( 13 ) and is arranged in such a way that for any possible orientation of the drug delivery device ( 10 ) at least a part of the exit path ( 15 ) is situated above the gravity center of said drug reservoir or below the dispensing hole ( 14 ).
1 . A drug delivery device ( 10 ) comprising:
a drug reservoir ( 13 ) for comprising a drug,
at least one dispensing hole ( 14 ) for delivering the drug to an environment of the drug delivery device ( 10 ),
an actuator system ( 17 ) for pushing the drug from the drug reservoir ( 13 ) through the dispensing hole ( 14 ),
at least one exit path ( 15 ) for coupling the drug reservoir ( 13 ) to the dispensing hole ( 14 ), the exit path ( 15 ) comprising at least one entry point ( 16 ) for coupling the exit path ( 15 ) to the drug reservoir ( 13 ), the exit path ( 15 ) being arranged in such a way that for any possible orientation of the drug delivery device ( 10 ) at least a part of the exit path ( 15 ) is situated above the gravity center of said drug reservoir or below the dispensing hole ( 14 ).
2 . A drug delivery device as claimed in claim 1 , wherein the drug delivery device is an implantable drug delivery device.
3 . A drug delivery device ( 10 ) as claimed in claim 1 , wherein the drug delivery device ( 10 ) is a swallowable drug delivery device.
4 . A drug delivery device ( 10 ) as claimed in claim 1 , wherein the position of the entry point ( 16 ) relative to the dispensing hole ( 14 ) is such that a possibility of drug release caused by a siphon effect is small.
5 . A drug delivery device ( 10 ) as claimed in claim 1 , wherein the exit path ( 15 ) has a spiral shape.
6 . A drug delivery device ( 10 ) as claimed in claim 1 , further comprising a second dispensing hole ( 14 ) for delivering the drug to the environment of the drug delivery device ( 10 ), the second dispensing hole ( 14 ) also being coupled to the exit path ( 15 ).
7 . A drug delivery device ( 10 ) as claimed in claim 1 , further comprising an end cap ( 41 ) for closing the drug reservoir ( 13 ), the exit path ( 15 ) being integrated in the end cap ( 41 ).
8 . A drug delivery device ( 10 ) as claimed in claim 7 , wherein the end cap ( 41 ) is constructed from a top piece ( 61 ) and a bottom piece ( 51 ), the top piece ( 61 ) comprising the dispensing hole ( 14 ) and the bottom piece ( 51 ) comprising the entry point ( 16 ), the top piece ( 61 ) and/or the bottom piece ( 51 ) comprising a groove for forming the exit path ( 15 ).
9 . A drug delivery device ( 10 ) as claimed in claim 8 , wherein only the top piece ( 61 ) comprises the groove and wherein the entry point ( 16 ) is positioned at a center of the bottom piece ( 51 ).
10 . A drug delivery device ( 10 ) as claimed in claim 8 , wherein only the bottom piece ( 51 ) comprises the groove and wherein the dispensing hole ( 14 ) is positioned at a center of the top piece ( 61 ).
11 . A drug delivery device ( 10 ) as claimed in claim 1 , wherein the exit path ( 15 ) further comprises a second entry point for coupling the drug reservoir ( 13 ) to the exit path ( 15 ).