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

Claim 0:
1. An injector comprising:
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 either of a first cartridge or a second cartridge therein, wherein a radial dimension of the first cartridge is different than a radial dimension of the second cartridge, the pathway including a proximal opening for receiving the first cartridge or the second cartridge therethrough and a coupler mounted at a distal end of the pathway and engageable with the first cartridge or the second cartridge for fluidly connecting the first cartridge or the second cartridge with the injection needle;
a first adapter collar mounted within the pathway; and
a second adapter collar mounted within the pathway,
wherein the first adapter collar is configured to receive one of the first cartridge or the second cartridge therethrough upon insertion of the first cartridge or the second cartridge into the pathway, and the first adapter collar is configured to engage a portion of the first cartridge to stabilize the first cartridge within the pathway,
wherein the second adapter collar is configured to receive either of the first cartridge or the second cartridge therethrough upon an insertion of the first cartridge or the second cartridge into the pathway, and the second adapter collar is configured to engage with the second cartridge to stabilize the second cartridge within the pathway,
wherein each of the first adapter collar and the second adapter collar comprises a disk,
wherein the first adapter collar comprises fingers that are cantilevered, angularly spaced apart from each other, and that project from the disk of the first adapter collar the fingers being oriented in an unbiased, radially inwardly projecting closed position covering the coupler, and the fingers being deflectable distally and radially outwardly relative to one another by the first into an open position exposing the coupler upon advancement of the first through the disk of the first adapter collar, and
wherein in the unbiased, radially inwardly projecting closed position the fingers extend radially inwardly to positions that are radially between a central axis of the disk of the first adapter collar and an inner wall of a neck of the first cartridge.