Infusion pump assembly
An 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 device for delivering infusible fluid to a user, the device comprising: a reusable pump portion comprising a motor assembly; a disposable portion in removable relation to the reusable pump portion, the disposable portion comprising a rubber septum and a needle, wherein when the disposable portion is attached to the reusable pump portion, the needle pierces the rubber septum; processing logic for executing one or more processes in the reusable pump portion; and a battery assembly configured to power the infusion pump device, wherein the processing logic is configured to: compare an actual voltage level of the battery assembly to a minimum voltage requirement to determine if the actual voltage level meets the minimum voltage requirement; and if the actual voltage level does not meet the minimum voltage requirement, initiating an alarm sequence on the infusion pump device.
2. The device in claim 1 , the disposable portion comprising a plunger rod, the plunger rod connected to the plunger and extending away from the plunger to a distal end, the plunger rod having a threaded portion, wherein when the disposable portion is attached to the reusable pump portion the plunger rod is engaged with the motor assembly, and wherein the plunger rod is displaceable by the motor assembly, and wherein the processing logic is configured to monitor a displacement of the plunger rod to determine if the plunger rod was displaced an expected displacement in response to displacement by the motor assembly; and wherein if the plunger rod was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device.
3. The device in claim 1 wherein the motor assembly comprises a nut assembly.
4. The device of claim 1 wherein the reusable pump portion is configured to receive the disposable portion.
5. The device of claim 2 wherein the plunger assembly comprises at least one seal.
6. An infusion pump device for delivering infusible fluid to a user, the device comprising: a reusable pump portion comprising a motor assembly; and a disposable portion in removable relation to the reusable pump portion, the disposable portion comprising a plunger displaceable by the motor assembly, a rubber septum, and a needle, wherein when the disposable portion is attached to the reusable pump portion, the needle pierces the rubber septum; and processing logic for executing one or more processes in the reusable pump portion, wherein the processing logic is configured to monitor a displacement of the plunger to determine if the plunger was displaced an expected displacement in response to displacement by the motor assembly, wherein and if the plunger was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device.
7. The device of claim 6 wherein the plunger assembly further comprises at least one seal.
8. An infusion pump device for delivering infusible fluid to a user, the device comprising: a pump portion comprising a motor assembly wherein the motor assembly comprises a nut assembly; a reservoir in removable relation to the pump portion, the reservoir comprising: a plunger having a threaded portion extending over an entire length of the plunger rod from the plunger to the distal end; a rubber septum; and a needle, wherein when the reservoir is attached to the pump portion, the needle pierces the rubber septum; and processing logic for executing one or more processes in the reusable pump portion, wherein the plunger rod is displaceable by the nut assembly, wherein the pump portion is durable and the reservoir is disposable, wherein the processing logic is configured to monitor a displacement of the plunger to determine if the plunger was displaced an expected displacement in response to displacement by the motor assembly, and wherein and if the plunger was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device.
9. The device of claim 8 wherein the plunger assembly comprises at least one seal.
10. The device of claim 8 further comprising a battery assembly configured to power the infusion pump device, wherein the processing logic is configured to: compare an actual voltage level of the battery assembly to a minimum voltage requirement to determine if the actual voltage level meets the minimum voltage requirement; and if the actual voltage level does not meet the minimum voltage requirement, initiating an alarm sequence on the infusion pump device.