Infusion device with base portion and durable portion

摘要

A delivery device includes a durable housing portion and a separable disposable portion that selectively engage and disengage from each other. The disposable housing portion secures to the patient and may be disposed of after it has been in use for a prescribed period. Components that normally come into contact with a patient or with infusion media are supported by the disposable housing portion for disposal after the prescribed use, while the durable housing portion supports other components such as electronics for controlling delivery of infusion media from the reservoir and a drive device and drive linkage.

主权项

1. A delivery device for delivering infusion media to a patient, comprising:
a base portion comprising a plate-like member having a bottom surface that secures to the patient's skin; a cannula extending from the plate-like member of the base portion and into the patient's skin once the delivery device is secured to the patient; and a durable portion that mates with and attaches directly to the plate-like member of the base portion to form a housing of the delivery device and is separable from the plate-like member of the base portion, the durable portion including a drive device having a drive motor and drive linkage components, the drive device housed entirely within the durable portion and coupled to a reservoir contained in the delivery device to drive the infusion media from the reservoir through the cannula and into the patient in a controlled manner; wherein the drive linkage components include a component that is arranged to be in direct contact with a piston plunger of the reservoir when the durable portion is mated with the plate-like member of the base portion, and to be separated from the piston plunger of the reservoir when the durable portion is separated from the plate-like member of the base portion.