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Publication Number
US-12343512-B2
Publication Date
2025-07-01
Expiration Date
Abstract
An injection device includes a cartridge configured to hold a volume of fluid, the cartridge having a proximal end and a distal end through which the fluid is dispensed; a stopper disposed in the cartridge and configured to move from the proximal end toward the distal end to cause the fluid to be dispensed through the distal end of the cartridge; and an electronic device disposed at the distal end of the cartridge, the electronic device including an emitter configured to transmit a signal toward the stopper, a receiver configured to receive reflections of the signal from the stopper, and a controller configured to wirelessly transmit data related to a position of the stopper in the cartridge.
Core Innovation
The invention relates to an injection device that includes a cartridge configured to hold a volume of a medicament, where the cartridge comprises a stopper disposed in the cartridge. The stopper is configured to move toward a distal end of the cartridge to dispense the volume of the medicament from the cartridge.
An electronic device is configured to be releasably attached to the distal end of the cartridge or to the distal end of a cartridge housing. When attached, an emitter of the electronic device is positioned at a distal corner of the cartridge or cartridge housing for transmitting a signal towards the stopper, and a receiver of the electronic device is positioned at the distal corner for receiving a reflected portion of the signal from the stopper.
The electronic device is configured to measure the volume of the medicament within the cartridge based on data representing the signal transmitted by the emitter and data representing the reflected portion received at the receiver. The configuration supports measurement using transmitted and reflected signal data from the emitter and receiver at the distal corner.
Claims Coverage
The document provides three independent claims that each center on measuring medicament volume in a cartridge having a movable stopper using transmitted and reflected signal data from an emitter and receiver arrangement at a distal corner after releasably attaching an electronic device.
Releasably attached electronic device with distal-corner emitter and receiver volume measurement
An injection device comprising a cartridge configured to hold a volume of a medicament with a stopper configured to move toward a distal end to dispense the medicament, and an electronic device releasably attached to the distal end such that, when attached, an emitter at a distal corner transmits a signal towards the stopper and a receiver at the distal corner receives a reflected portion of the signal from the stopper, wherein the electronic device is configured to measure the volume of the medicament within the cartridge based on data representing the transmitted signal and data representing the reflected portion received.
Releasably attached electronic device for measuring medicament volume via distal-corner transmitted and reflected signal
An injection device comprising a cartridge housing with a cartridge disposed in the housing, where the cartridge holds a volume of a medicament and has a stopper configured to move toward a distal end to dispense the volume, and an electronic device releasably attached to a distal end of the cartridge housing such that, when the cartridge is disposed in the cartridge housing, an emitter at a distal corner transmits a signal towards the stopper and a receiver at the distal corner receives a reflected portion of the signal from the stopper, wherein the electronic device is configured to measure the volume of the medicament within the cartridge based on data of the transmitted signal and data of the reflected portion received.
Method of attaching distal-corner emitter and receiver for measuring medicament volume during dispensing
A method comprising attaching an electronic device to a distal end of a cartridge of an injection device to position an emitter at a distal corner and a receiver at the distal corner, wherein the cartridge holds a volume of a medicament and comprises a stopper configured to move toward the distal end to dispense the volume, and wherein when the electronic device is attached, the electronic device is configured to measure the volume of the medicament within the cartridge using the emitter and the receiver.
Across the independent claims, the core claim coverage is the releasable attachment of an electronic device to a distal end so that an emitter and receiver positioned at a distal corner transmit a signal to the stopper and receive a reflected portion, enabling measurement of the volume of medicament within the cartridge based on transmitted and reflected signal data.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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