This is associated with An elongated accommodation for an injection device (10) for Administration of a Medicine Liquid, the accommodation includes: a portacartucho with tubular shape to accommodate a Cartridge (20) (50) filled with the medicine and comprising an end Proximal connection (21),A Body (30) for a Drive mechanism (5) functionally coupled with a plunger (52) of the cartridge (50), where the Body (30) comprises a connection End (31) Connectable to the distal end of the proximal connection (21), where one of the proximal end of connection (21 and e) Xtreme of distal connection (31) comprises an insertion section (22),Where the other end of the connection (21) and the proximal end of the distal Link (31) and (32) includes a receptacle for receiving the insertion Section axially (21),Where the insertion section (22) comprises at least a Clamping element (25) to engage positively with a Clamping element with complementary (35) of the container (32) to provide a Mutual Locking axial (6) portacartucho (20) and the Body (30), where e Elements of subject (25,35) of the insertion section (22) and the Receptacle (32) includes at least a pair of protruding radial (135) was paired with a radial Recess (125) provided on an inner Wall of the Receptacle (36) (32) and an exterior wall (26) of the insertion section (22) where A Radial depth of cut (d) radial (125) is less than the thickness of the side wall of the sectionInsert (22) or thickness of a side wall (33) of the container (32).La presente está relacionada con un alojamiento alargado para un dispositivo de inyección (10) para administración de un medicamento líquido, el alojamiento comprende: un portacartucho con forma tubular (20) para albergar un cartucho (50) relleno con el medicamento y que comprende un extremo de conexión proximal (21), un cuerpo (30) para albergar un mecanismo de impulso (5) acoplable funcionalmente con un émbolo (52) del cartucho (50), en donde el cuerpo (30) comprende un extremo de conexió
