FLUID RESERVOIR SEATING PROCEDURE FOR A FLUID INFUSION DEVICE

摘要

A method of seating a fluid reservoir in a housing of a fluid infusion device is presented here. The method is performed prior to establishing an outgoing fluid flow path from the fluid reservoir. The method begins by detecting insertion of the fluid reservoir into the housing of the fluid infusion device. In response to detecting the insertion, the method determines whether the fluid reservoir is in need of depressurization. When the fluid reservoir is in need of depressurization, the drive motor assembly of the fluid infusion device is rewound to depressurize the fluid reservoir. After depressurizing the fluid reservoir, an equalization state for the fluid reservoir is achieved. After achieving the equilibrium state, the drive motor assembly is advanced to obtain an initial seated state for the fluid reservoir.

主权项

1. A method of seating a fluid reservoir in a housing of a fluid infusion device prior to establishing an outgoing fluid flow path from the fluid reservoir, the fluid infusion device comprising a drive motor assembly, an actuation mechanism operatively coupled to the drive motor assembly for actuation of a plunger of the fluid reservoir, and a force sensor operatively coupled to the actuation mechanism, the method comprising:
detecting insertion of the fluid reservoir into the housing, wherein insertion of the fluid reservoir into the housing causes a shaft of the plunger to engage the actuation mechanism; after detecting insertion of the fluid reservoir, obtaining a first measure of force using the force sensor, wherein the first measure of force is associated with interaction of the shaft with the actuation mechanism; comparing the first measure of force to a first threshold force value; when the first measure of force is greater than the first threshold force value, depressurizing the fluid reservoir; after depressurizing the fluid reservoir, or when the first measure of force is not greater than the first threshold force value, rewinding the drive motor assembly to achieve an equilibrium state for the fluid reservoir; and after rewinding the drive motor assembly to achieve the equilibrium state, advancing the drive motor assembly to obtain an initial seated state for the fluid reservoir.