Infusion pump assembly
View Patent ↗An infusion pump assembly is disclosed. The infusion pump assembly includes a locking tab and a pump barrel inside a pump barrel housing, where the pump barrel accommodates a reservoir assembly. The reservoir assembly includes a reservoir and a plunger rod. The infusion pump assembly also includes a locking disc at a terminus of the pump barrel. The locking disc includes a clearance hole for the plunger rod. The locking disc also includes at least one locking tab notch in close proximity with the locking tab. The locking tab is in moveable engagement with the locking tab notch, and the reservoir moves the locking tab from a locked position to an unlocked position when the plunger rod is inserted through clearance hole. The locking disc rotates upon torque being applied to the reservoir assembly, the locking disc rotating from a non-loaded position to a loaded position with respect to the plunger rod and a drive screw.
1. An infusion pump system comprising:
a reservoir assembly comprising:
a reservoir, said reservoir having an interior volume and terminating with a hub connector on a first end;
a plunger rod, said plunger rod comprising a threaded portion and a notched portion; and
a removable filling aid, said filling aid comprising a threaded portion and a handle portion, wherein said threaded portion threads to said threaded portion of said plunger rod; and
an infusion pump assembly comprising:
a locking tab;
a pump barrel inside a pump barrel housing, said pump barrel accommodates the reservoir assembly; and
a locking disc at a terminus of said pump barrel, said locking disc having a clearance hole for said plunger rod and at least one locking tab notch, said locking disc being in close proximity with said locking tab,
wherein said locking tab is in moveable engagement with said locking tab notch, and
wherein said reservoir moves said locking tab from a locked position to an unlocked position when said plunger rod is inserted through said clearance hole, and
wherein said locking disc rotates upon torque being applied to said reservoir assembly, said locking disc rotating from a non-loaded position to a loaded position with respect to said plunger rod and a drive screw.
2. The infusion pump of claim 1 wherein said locking disc further comprising a second locking tab notch, wherein said second locking tab notch is engaged with said locking tab when said locking disc is in said loaded position.
3. The infusion pump of claim 1 wherein said locking disc further comprising a plunger rod support, said plunger rod support in close relation with said plunger rod when said plunger rod is inserted through said clearance hole.
4. The infusion pump of claim 1 wherein said locking disc further comprising at least two reservoir tab openings for mating with at least two reservoir alignment tabs on said reservoir.
5. The infusion pump of claim 4 wherein said reservoir assembly further comprising a locking hub, said locking hub fluidly connected to said reservoir.
6. The infusion pump of claim 5 wherein said locking hub further comprising at least two locking hub alignment tabs, said locking hub alignment tabs aligning with said reservoir alignment tabs when said locking hub is fluidly connected to said reservoir.
7. The infusion pump of claim 6 further comprising a hub and battery end cap, said end cap having an opening to said pump barrel, said pump barrel opening being complementary to said locking hub alignment tabs wherein the loading of said reservoir assembly provides alignment of said reservoir alignment tabs with said reservoir tab openings and said plunger rod with said clearance hole.
8. The infusion pump of claim 7 , said hub and battery end cap further comprising a first alignment feature, said first alignment feature complementary to a second alignment feature on said reservoir, wherein when said first and second alignment features are aligned, said locking hub alignment tabs are aligned with said hub and battery cap opening.