Medical filament delivery apparatus (80) includes a feed chamber (70) to which can be fed filamentary material from a store (30) of filamentary material. The apparatus (80) is designed to feed filamentary material through a catheter (94) into a patient, for example into an aneurysm. The apparatus includes a feed tube assembly (10) having a feed tube (12) with a slot (22) at its distal end. A distal end (46) of the filamentary material can be held within the slot (22) to ensure accurate positioning of the distal end (46) of the filamentary material into the drive assembly (80). The apparatus provides for severing of the distal end (46) of the filamentary material once the feed tube assembly has been inserted into the drive assembly (80), thereby ensuring reliable positioning of the filamentary material (40) into the drive assembly (80). More delicate filamentary material (40) can be handled compared to prior art arrangements.
