Stopper device, medicament container, and method for mixing two substances in a medicament container
Inventors
MESSNER-RUGOVA, Fatbardha • Eggensberger, Markus
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-12336965-B2
Publication Date
2025-06-24
Expiration Date
Abstract
A stopper device (1) seals off a medicament container (45) with a stopper element (3), wherein the stopper device is designed to seal the medicament container (45) in an axial direction of a center axis (M) of the medicament container (45), wherein the stopper device (1) is at least partially insertable into the medicament container (45), and the stopper element (3), in the intended installation position in the medicament container (45), is displaceable along the center axis (M) of the medicament container (45). The stopper device (1) has a retention region (23) with at least one retention means (5), wherein a closure element (7), in a first functional state of the stopper device (1), is retained by the retention means (5) in a fixed position relative to the stopper element (3), in particular retained releasably in a retention position on the stopper element (3), in such a way that a cavity (29) is formed between the closure element (7) and the stopper element (3).
Core Innovation
The invention describes a stopper device for sealing off a medicament container in an axial direction of a center axis. The stopper device is at least partially insertable into the medicament container, and in an intended installation position the stopper element is displaceable along the center axis. The stopper device includes a retention region with at least one retention means.
In a first functional state, a closure element is releasably retained in a fixed position relative to the stopper element by the retention means so that a cavity is formed between the closure element and the stopper element. The closure element has at least one first locking means, and the retention means has at least one second locking means embodied corresponding to the first locking means, arranged on a side of the stopper element facing the closure element, such that the first and second locking means engage in a locking manner in the first functional state.
In the described functional progression, the closure element is moved out of a retention position when the stopper device is acted upon with a force in the distal direction and is deformed at least partially due to the distal force application. The fluidic separation of a first substance and a second substance is eliminated as the stopper element is displaced in the distal direction, the retention region relaxes radially during a distal displacement, and retention of the closure element in the retention position is released.
Claims Coverage
The document includes three independent claims: one for a stopper device, one for a medicament container, and one for a method for mixing two separately stored substances. Each claim is centered on a first functional state that forms a cavity by locked retention of a closure element, and a distal-force-induced transition in which the closure element is moved out of a retention position to eliminate fluidic separation.
Axially sealing stopper device with releasable closure retention to form a cavity
A stopper device for sealing off a medicament container axially, insertable into the medicament container with a stopper element displaceable along a center axis, including a retention region with retention means that in a first functional state releasably retains a closure element in a fixed position relative to the stopper element to form a cavity between the closure element and the stopper element, wherein corresponding first locking means and second locking means engage in a locking manner in the first functional state.
Medicament container with elastic, distal-force-deformable stopper and non-fluid-tight outlet closure behavior
A medicament container with a base body and a stopper device sealing a proximal end relative to a chamber, wherein a chamber is delimited radially by an inner wall and distally by an outlet opening and/or a closure cap, wherein a stopper element is elastic and deformable by means of a projection of a dispensing device, and wherein the discharge projection of the stopper element has a greater strength in the axial direction than the pressure required to move the closure element.
Distal-force-induced mixing by deforming the stopper to release closure retention and eliminate fluidic separation
A method for mixing two substances stored separately in terms of flow in a medicament container, using a stopper device that seals the container axially and forms a cavity between a closure element and a stopper element in a first functional state by releasable retention with locking means, wherein a first substance is arranged in the cavity and a second substance is arranged in the chamber, and a distal force acts on the stopper element such that the stopper device is deformed to move the closure element out of a retention position, the stopper element is displaced in the distal direction, the fluidic separation of the two substances is eliminated, and the retention region relaxes radially during distal displacement with release of retention of the closure element in the retention position.
Across the independent claims, the core inventive coverage is the same structural-functional scheme: a first functional state with locked releasable retention of a closure element to form a cavity, followed by a distal-force-induced deformation that releases the closure element from a retention position, displaces the stopper element distally, and eliminates fluidic separation between a first substance stored in the cavity and a second substance stored in the chamber.
Stated Advantages
Documented Applications
No documented applications found
Interested in licensing this patent?