Percutaneous access apparatus (12) is described that comprises a percutaneous fluid access device (100) having an extracorporeal portion (106), one or more ports (120) accessible from the extracorporeal portion and a septum (122) for sealing each port. A connector device (130) comprising one or more hollow needles (182) is attachable to the percutaneous fluid access device. The apparatus also includes an attachment mechanism (132) for attaching the connector device (130) to the extracorporeal portion (106) and an actuation mechanism that, after the connector device (130) has been attached to the extracorporeal portion (106), can be used to drive the one or more hollow needles (182) through the septum (122) to establish fluid communication between the one or more hollow needles (182) and the one or more ports (120). The apparatus may be used for neurosurgery applications.
