US 2022/0218968 A1 · METERED DOSE TOPICAL APPLICATOR

Abstract

A topical applicator of the propel/repel type includes an expandable reservoir with a port, an attachable applicator tip, and a metered dosing system. The reservoir can be a cylindrical housing with a movable elevator movable by a drive mechanism that is initially not engaged to allow filling of a flowable compound through the port, moving the elevator. An actuator, such as a rotating ring or pushbutton may engage the drive mechanism. The drive mechanism can include a one-way ratcheting feature. Metered doses can be dispensed through a hole or holes in the applicator tip by rotating a dosing knob or pushing a pushbutton causing the drive mechanism to advance the elevator. The drive mechanism and the action to dispense metered doses can be combined into a single motion. The drive mechanism can include detent positions that correspond to discrete doses, and can also provide audible and tactile feedback.

Claims24

Dependent claims

A topical applicator comprising:

a barrel with a first end and a second end;
an elevator slidably and sealably disposed within said barrel, the elevator attached to a threaded rod extending from the elevator toward the first end of said barrel, the barrel and elevator defining a reservoir;
an access port disposed on second end of said barrel through which flowable compounds may be added to or expelled from said reservoir;
a threaded nut with integral threads to engage threads of said threaded rod, said threaded nut including an integral knob, said nut and knob radially and axially constrained at first end of said barrel;
an actuating means disposed on or in relation to said barrel, wherein operating said actuating means toggles said threaded nut from disengaged to engaged with said threaded rod;
wherein said flowable compound can be added to said reservoir, causing said elevator to translate in a first axial direction of said barrel, when the actuating means has not engaged said threaded nut with said threaded rod, and,
wherein rotating said knob in a first direction translates said elevator in a second axial direction of said barrel when actuating means has engaged said threaded nut with said threaded rod to expel said flowable compounds through said access port.

4 more elements

Dependencies are inferred from the claim text.

Metered dose topical applicator

Life of this patent

Metered dose topical applicator

Life of this patent

Abstract

Claims24