Assembly of a needle (1) and a fluid supply device (7b), the needle (1) being provided with needle coupling means (2), the supply device (7b) being provided with a nozzle (9b), the needle coupling means (2) comprising a standardized construction with standardized internal dimensions according to the Luer standard, the needle coupling means (2) further comprising a projection (5), which renders fitting the needle (1) to a supply device with a nozzle (7a) arranged for cooperation with needle coupling means having standardized construction and dimensions according to the Luer standard impossible, the nozzle (7b) of the supply device (9b) being lengthened relative to a standardized nozzle (9a), such that the needle coupling means (2) with projection (5) can still be coupled to the lengthened nozzle (9b). The invention further relates to a needle (1), a syringe (7b), a method for performing an intraneural puncture and a method for preparing an insertion device for intraneural administration.