Portable medicine injection device and analyte metering system

摘要

Methods, systems, and devices are described for setting a dose of medicine and injecting the medicine. In one aspect, a method to dispense a medicine includes inserting a cartridge containing a medicine into a cartridge holder coupled to a housing of a medicine injection device, positioning a spine component of the device to make contact with the cartridge in the cartridge holder, selecting a dose of the medicine for injection, in which the selecting includes rotating an injection component of the device to a setting corresponding to the selected dose, and linearly advancing the injection component to rotate a drive gear coupled to the injection component to drive the spine component so as to push the end of the cartridge to dispense the medicine in the amount of the selected dose.

主权项

1. A device to dispense a medicine, comprising:
a housing configured to include a curved channel; a cartridge holder coupled to the housing via a pivot joint, the cartridge holder including a chamber structured to encase a cartridge containing a medicine and the cartridge having a first opening that aligns with one end of the curved channel at an end of the chamber and a second opening at an opposite end of the chamber; and a dose setting and injecting mechanism including:
(i) a spine component housed in the curved channel of the housing, the spine component including a plurality of link structures linked together to allow curved movement of the spine component within the curved channel, wherein the one end of the curved channel includes a channel opening interfaced with the first opening to enable the spine component to push against the cartridge for dispensing a selected amount of the medicine through the second opening,(ii) a shaft component structured to include a threaded cylindrical section encased at least in part within the housing and a knob disposed at least in part outside of the housing,(iii) a gear mechanism including a rod having a first gear and a second gear, the second gear coupled to the spine component, and a drive gear having a first gear engagement mechanism for engaging to the first gear and a second gear engagement mechanism for engaging to threads of the threaded cylindrical section of the shaft component, wherein, upon engagement of the first gear and the drive gear to each other, a linear movement of the shaft component moves the spine component, and(iv) a disengagement button coupled to the rod to disengage the first gear and the drive gear from each other, thereby allowing the spine component to move independent of the shaft component, wherein a rotation of the shaft component moves the shaft component to a distance from the housing that corresponds to the selected amount of the medicine.