Infusion pump assembly

摘要

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.

主权项

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 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; and processing logic for executing one or more processes in the reusable pump 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 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.