Fluid interconnection scheme between reservoir, pump and filling member
A filling member ( 43 ) in a medicament delivery device ( 1 ), the filling member ( 43 ) includes a first conduit ( 12 ) that fluidly communicates with a reservoir ( 4 ) and a second conduit ( 14 ) that fluidly communicates with a pump ( 3 ) and with the first conduit ( 12 ), wherein the filling member ( 43 ) provides two-way medicament flow that enters the reservoir ( 4 ) via the first conduit ( 12 ), exits the reservoir ( 4 ) into the first conduit ( 12 ) and the second conduit ( 14 ), and exits the second conduit ( 14 ) to the pump ( 3 ). The reservoir ( 4 ) includes a reservoir tube ( 44 A) having one end that is formed with the reservoir ( 4 ), and the reservoir tube ( 44 A) having another end that is press fit to the filling member ( 43 ) to establish fluid communication with the reservoir ( 4 ).
1. A filling member in a medicament delivery device, the filling member comprising:
a first conduit that fluidly communicates with a reservoir and a pump, the first conduit configured to press fit to a reservoir tube;
a second conduit that fluidly communicates with the first conduit to fill the filling member with medicament; and
a septum cavity for housing a septum;
wherein the filling member provides two-way medicament flow that:
enters the reservoir via the first conduit and the second conduit;
exits the reservoir into the first conduit;
exits the first conduit to the pump; and
the septum cavity does not compress the septum radially.
2. The filling member according to claim 1 , wherein the second conduit is not used for medication delivery as the medicament exits the filling member to the pump.
3. The filling member according to claim 1 ,
a centerline of the septum cavity is offset from and substantially parallel to a centerline of the first conduit.
4. The filling member according to claim 3 , wherein the septum cavity compresses the septum a predetermined amount axially.
5. A device for delivering medicament into skin of a patient, the device comprising:
a filling member including:
a septum cavity for housing a septum;
a first conduit that fluidly communicates with a reservoir and a pump, the first conduit configured to press fit to a reservoir tube;
a second conduit that fluidly communicates with the first conduit to fill the filling member with medicament;
wherein the filling member provides two-way medicament flow that:
enters the reservoir via the first conduit and the second conduit;
exits the reservoir into the first conduit;
exits the first conduit to the pump; and
the septum cavity does not compress the septum radially.
6. The device according to claim 5 , wherein the medicament flow does not exit into the second conduit from the first conduit.
7. A device for delivering medicament into skin of a patient, the device comprising:
a filling member including:
a septum cavity for housing a septum;
a first conduit that fluidly communicates with a reservoir and a pump;
a second conduit that fluidly communicates with the first conduit to fill the filling member with medicament;
a reservoir tube having one end that is formed with the reservoir; and the reservoir tube having another end that is press fit to the filling member to establish fluid communication with the reservoir;
wherein
the other end of the reservoir tube contacts a protruding portion of a base; and
the filling member provides two-way medicament flow that:
enters the reservoir via the first conduit and the second conduit;
exits the reservoir into the first conduit; and
exits the first conduit to the pump.
8. The device according to claim 7 , wherein the protruding portion of the base is disposed in the filling member.
9. The device according to claim 7 , wherein
the protruding portion includes a slot; and
the slot is in fluid communication with the second conduit of the filling member during filling.
10. The filling member according to claim 9 , wherein the slot is not in fluid communication with the first conduit during medication delivery.
11. The device according to claim 7 , wherein a centerline of the protruding portion of the base is substantially parallel to and offset from a centerline of the septum.
12. The device according to claim 7 , wherein
the protruding portion of the base includes a through hole; and
the through hole of the protruding portion is substantially inline and in fluid communication with the first conduit.
13. The device according to claim 7 , wherein the septum includes a hole that surrounds the protruding portion of the base to seal the filling member.
14. A medicament delivery device comprising:
a cover and a base, the base including a protruding portion, the cover and the base enclosing:
a pump that controls flow of medicament to a patient;
a filling member including:
a septum adapted to provide access to an interior of the filling member via penetration therethrough;
a septum cavity for housing the septum;
a first conduit that receives the protruding portion and fluidly communicates with a reservoir and the pump; and
a second conduit that fluidly communicates with the first conduit to fill the filling member with medicament;
wherein the filling member provides two-way medicament flow that:
enters the reservoir via the first conduit and the second conduit;
exits the reservoir into the first conduit; and
exits the first conduit to the pump.