An implantable percutaneous fluid delivery device (10; 110; 410) is described that comprises a subcutaneous base portion (20; 120; 150;420) having one or more ports for supplying fluid to one or more implanted catheter devices and a percutaneous portion (22; 122; 180; 422) comprising an extracorporeal surface (24). The one or more ports of the subcutaneous base portion (20; 120; 150; 420) are accessible from the extracorporeal surface of the percutaneous portion (22; 122; 180; 422). The subcutaneous base portion is at least partially insertable into a complementary recess (342; 440) formed in a bone, the subcutaneous base portion (20; 120; 150; 420) comprising one or more features (421) for gripping the internal surface of such a complementary recess thereby directly anchoring the subcutaneous base portion (20; 120; 150; 420) to the bone. The device maybe used to route fluid to neurosurgical catheters (18; 418) optionally via a router unit (12).
