This thesis work is performed on VSM Group Ltd in Huskvarna that produces sewing machines under the trademarks Pfaff and Husqvarna Viking. On these sewing machines is an application that helps the user to thread the needle. The aim with the work has been to study today's applications on VSM and their competitors' sewing machines in order to since developing a new Needle-threader that divides itself from all the ones used today. The objective with the work has been an entire new concept with an operational prototype.As a base the competitor analysis was used where today's applications was studied in order to identify positive and negative aspects of these. This led to a number off ?concept families? where different variants off the same ideas were collected and evaluated.