FLUID RESERVOIR SEATING PROCEDURE FOR A FLUID INFUSION DEVICE

摘要

A fluid infusion device including a housing that receives a sealed fluid reservoir is presented here. The fluid infusion device includes a drive motor assembly, an actuation mechanism, a force sensor, and at least one processor in the housing. The processor detects insertion of the fluid reservoir and incrementally rewinds the drive motor assembly to achieve an equilibrium state. The processor advances the drive motor assembly and obtains at least one measure of force using the force sensor until the at least one measure of force indicates that the fluid reservoir has reached an initial seated state. The processor performs a stabilizing cycle with the drive motor assembly. The processor advances the drive motor assembly and obtains at least one subsequent measure of force using the force sensor until the at least one subsequent measure of force indicates that the fluid reservoir has reached a subsequent sealed state.

主权项

1. A fluid infusion device comprising:
a housing that receives a sealed fluid reservoir, the fluid reservoir comprising a plunger and a shaft coupled to the plunger; a drive motor assembly in the housing; an actuation mechanism in the housing, wherein the actuation mechanism is operatively coupled to the drive motor assembly; a force sensor in the housing and operatively coupled to the actuation mechanism to obtain measures of force associated with interaction of the shaft with the actuation mechanism; and at least one processor in the housing and operatively coupled to the drive motor assembly and the force sensor, wherein the at least one processor:
detects insertion of the fluid reservoir into the housing;thereafter, incrementally rewinds the drive motor assembly to achieve an equilibrium state for the fluid reservoir;thereafter, advances the drive motor assembly and obtains at least one measure of force using the force sensor until the at least one measure of force indicates that the fluid reservoir has reached an initial seated state;thereafter, performs a stabilizing cycle with the drive motor assembly to stabilize the fluid reservoir; andthereafter, advances the drive motor assembly and obtains at least one subsequent measure of force using the force sensor until the at least one subsequent measure of force indicates that the fluid reservoir has reached a subsequent sealed state.