Patent MX-2022012166-A (MX)
Title: Auto-injector device equipped with reconstitution functionality for multiple chamber drug cartridge.
Inventor: MARCOZ ALAIN
IPC: A61M5/20
Filed: 2020-04-01
Abstract: Handheld motor-driven drug reconstitution and auto-injector device (1) having a proximal drive system (2) comprising an elongated body (3) housing a controllable drive motor (6), and an axially drivable piston rod (7), and a distal drug cartridge holder assembly (11) housing a multiple chamber (30, 31) drug cartridge (25), the cartridge holder assembly (11) being releasably attached to a distal zone (23) of the drive system (2), the drive system (2) and cartridge holder assembly (11) being configured to impart a movement to the drug cartridge holder assembly (11) in which said drug cartridge holder assembly (11) is moved from a first substantially extended distal configuration along the central longitudinal axis, to a second substantially collapsed proximal configuration along the central longitudinal axis, the relative movement of the drug cartridge holder assembly (11) effecting reconstitution of an injectable product from substances contained in each of the chambers (30, 31).Handheld motor-driven drug reconstitution and auto-injector device (1) having a proximal drive system (2) comprising an elongated body (3) housing a controllable drive motor (6), and an axially drivable piston rod (7), and a distal drug cartridge holder assembly (11) housing a multiple chamber (30, 31) drug cartridge (25), the cartridge holder assembly (11) being releasably attached to a distal zone (23) of the drive system (2), the drive system (2) and cartridge holder assembly (11) being configured to impart a movement to the drug cartridge holder assembly (11) in which said drug cartridge holder assembly (11) is moved from a first substantially extended distal configuration along the central longitudinal axis, to a second substantially collapsed proximal configuration along the central longitudinal axis, the relative movement of the drug cartridge holder assembly (11) effecting reconstitution of an injectable product from substances contained in each of the chambers (30, 31). The invention concerns a device (12) for measuring the overall generated heat flow rate released by a battery cell (10), comprising: - an electrical power source for charging and discharging the battery, - an internal temperature sensor (16), placed inside the battery, - a surface temperature sensor (18), placed on the surface of the battery cell - an ambient temperature sensor (14), placed in the ambient environment, - a memory (22) for recording the temperatures, and - a processor (24). The processor (24) computes characteristic thermal attributes of the battery cell (10) based on a predetermined thermal equivalent circuit of the battery (10), using temperatures recorded over a predetermined calibration time period, during which the battery is subjected to current emitted by the electrical power source (20). The processor (22) then computes the heat flow rate generated by the battery cell (10) towards its ambient environment from a set of recorded temperatures and the thermal attributes of the battery cell (10).