Cartridge devices for administration of a medicament
Inventors
Gjertsen, Jeffrey • Sullivan, Timothy
Assignees
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Publication Number
US-12329949-B2
Publication Date
2025-06-17
Expiration Date
Abstract
A handheld assembly for dispensing a medicament to a subject is provided. The assembly includes a unit dose cartridge device, a shell, a plunger, a dispense button, a drive member and an escapement that is movable and capable of cycling the dispense assembly thru multiple states of a dispense cycle.
Core Innovation
The document describes a handheld assembly for dispensing a medicament to a subject using a shell, a dispense button, a drive member, and a plunger. The assembly further includes a rotatable escapement member, or a plunger escapement member movable about an axis, having at least one ramp surface with predetermined ramp profiles that translates a drive member to advance the plunger and express a unit dose form.
The unit dose cartridge comprises more than one cylindrical blister chamber, each configured to house a unit dose form containing a medicament. The cartridge is slidably accepted by the shell via a cartridge alignment channel open on opposite ends, and dispense cycle stages include a ready to load state, a make-ready state, a dispense activation, and a return stage.
The document further describes escapement-related mechanics including ramp-surface escapement cycling through multiple dispense states, a plunger hold surface that maintains the plunger in a dispense state for a predetermined time at the end of dispense, and return spring features to reduce cross-contamination. In additional described embodiments, a longitudinal slide arm and slide arm finger member advance successive blister chambers via notches in the blister sidewall, and unit dose forms include an internal piercing member with an internal channel to puncture lidding and enable medicament flow/dispersion.
Claims Coverage
The independent claims identified are clm-00001 and clm-00007, each covering a handheld assembly that dispenses a medicament using a shell, a dispense button, a drive member, a plunger, and a plunger escapement member with ramp surfaces. Across these independent claims, the core inventive features are the ramp-driven motion of the drive member/plunger and the multi-blister cylindrical unit dose cartridge slidably accepted by the shell, including a cartridge alignment channel in clm-00001.
Handheld medicament-dispensing assembly with plunger escapement ramp surfaces
A handheld assembly for dispensing a medicament to a subject comprising a shell housing a dispense button, a drive member in communication with the dispense button, a plunger, and a rotatable escapement member having at least one ramp surface, wherein depressing the dispense button causes the drive member to translate along a ramp of the plunger escapement member extending the plunger to express the unit dose form.
Unit dose cartridge with multiple cylindrical blister chambers slidably accepted by a cartridge alignment channel
A unit dose cartridge comprising more than one cylindrical blister chambers each configured to house a unit dose form wherein each unit dose form contains a medicament, and wherein the shell further comprises a cartridge alignment channel open on opposite ends and configured to slidably accept the unit dose cartridge.
Two-motion ramp profile readying and dispensing with plunger escapement member
A handheld assembly comprising a plunger, a dispense button in slidable communication with the shell, a drive member in communication with the dispense button, and a plunger escapement member movable about an axis and having more than one ramp wherein each ramp has a predetermined profile, wherein a first motion of the dispense button causes the drive member to translate along a first ramp readying the assembly for dispense and wherein a second motion causes the drive member to translate along a second ramp extending the plunger to express the unit dose form.
The independent claim set centers on a handheld medicament dispenser where a dispense button motion translates a drive member along predetermined ramp profiles of a plunger escapement member to extend a plunger and express a unit dose form. The cartridge structure is based on a unit dose cartridge with multiple cylindrical blister chambers, and at least in clm-00001 the cartridge is slidably accepted via a shell cartridge alignment channel.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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