Design and development of a spinal needle. Ergonomic, with measurements suitable for large hands, incorporating a magnifying glass to improve the vision of the spinal fluid outflow, as this is difficult for some anaesthetists with slight ocular affections. With a coloured dot or mark indicating the position of use and coupling with the mandrel. Aesthetically, a design that maximises functionality and introduces a distinctive feature to differentiate it from the competition will be chosen.