A method of injection moulding a urinary catheter in a mould cavity by use of a flow structure with a primary melt channel in simultaneous communication with a first secondary melt channel and a second secondary melt channel, where the first secondary melt channel is connected to a first injection point of the mould cavity for injection of the melt into the mould cavity from the first injection point, and where the second secondary melt channel is connected to a second injection point of the mould cavity for injection of melt into the mould cavity from the second injection point. To enable improved control and thereby enable moulding of a longer and slimmer catheter, and particularly a catheter with a long internal conduit, the method comprises injecting melt simultaneously from the first and second secondary melt channels into the mould cavity.
