Coded cartridge holder system for a fluid delivery device

摘要

A coded cartridge holder system is disclosed for use with a cartridge assembly (20) containing a fluid and a delivery device (10), where the system has keyed connectors (5, 5′, 6, 6′) to prevent accidental attachment of the wrong fluid delivery device (10). The system comprises a coupling (1) attachable to the dose setting portion (12) of the device (10) and keyed to the proximal end of the cartridge holder (14). The cartridge holder (14) may also contain medical coding (27, 28) to correspond to matching coding (27′, 28′) on the distal end of a cartridge assembly (20).

主权项

1. A coded cartridge holder system comprising:
a coupling having a proximal end, a distal end, and an inner wall, the inner wall comprising a plurality of keyed connectors and the proximal end being configured for attachment to a dose setting portion of a fluid delivery device, a cartridge holder comprising corresponding keyed connectors which are adapted and arranged to match the keyed connectors provided on the coupling, wherein the cartridge holder comprises a distal end, the distal end comprising an interior wall comprising a mechanical coding, wherein the mechanical coding comprises three equally spaced slots and a fourth slot offset an angle β from one of the three equally spaced slots, and a cartridge comprising a distal end, wherein the distal end comprises three equally space protrusions and a fourth protrusion offset from one of the three equally spaced protrusions by an angle equal to β, the protrusions being configured to match the mechanical coding provided on the interior wall of the cartridge holder.