Patent ID: 11857767
Assignee: WEST PHARMA. SERVICES IL, LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. An injector device kit comprising:
an injector having:
a body;
an injection needle movably mounted to the body, the injection needle being displaceable between a retracted position and an injection position;
a pathway within the body sized for independently receiving any one of a plurality of radially differently dimensioned cartridges, the pathway including a proximal opening for receiving the plurality of radially differently dimensioned cartridges therethrough and a cartridge piercing needle mounted at a distal end of the pathway and projecting into the pathway, the cartridge piercing needle being in fluid communication with the injection needle and engageable with the plurality of radially differently dimensioned cartridges for fluidly connecting the plurality of radially differently dimensioned cartridges with the injection needle; and
a plurality of adapter collars each removably mountable within the pathway, each adapter collar being configured to receive a corresponding one of the plurality of radially differently dimensioned cartridges therethrough and engage a portion of the corresponding one of the plurality of radially differently dimensioned cartridges to stabilize the corresponding one of the plurality of radially differently dimensioned cartridges within the pathway and substantially co-axially align the corresponding one of the plurality of radially differently dimensioned cartridges with the cartridge piercing needle, whereby mounting of a respective adapter collar of the plurality of adapter collars within the pathway enables usage of the injector with the corresponding one of the plurality of radially differently dimensioned cartridges,
wherein each adapter collar of the plurality of adapter collars comprises a disk,
wherein each adapter collar of the plurality of adapter collars further comprises fingers that are cantilevered, angularly spaced apart from each other, and that project from the disk, the fingers being oriented in an unbiased, radially inwardly projecting closed position covering the cartridge piercing needle, and the fingers being deflectable distally and radially outwardly relative to one another by the corresponding one of the plurality of radially differently dimensioned cartridges into an open position exposing the cartridge piercing needle upon advancement of the corresponding one of the plurality of radially differently dimensioned cartridges through the disk, and
wherein in the unbiased, radially inwardly projecting closed position the finders of each adapter collar of the plurality of adapter collars extend radially inwardly to positions that are radially between a central axis of the disk of each corresponding adapter collar and an inner wall of a neck of the corresponding one of the plurality of radially different dimensioned cartridges.