Abstract: A spike exchanger to move a spike from one peritoneal dialysis bag to another. A pair of peritoneal dialysis bags are positioned by a base having clamps for releasably closing the tubular ports of each bag. A patient connectable tube with a spike shaped end is removably mounted to a device slidably mounted on the base and guided by means of a slot and roller combination to the tubular port of either bag. Various embodiments of the slot roller mechanism guide the spike shaped end to the tubular ports. A hook shaped tool pivotally mounted upon the base is engageable to unlock a sterile clamp mounted to the spike and port of one bag. Spaced apart and integrally connected arms moveably mounted to the base receive a sterile clamp and are positionable to lockingly mount a sterile clamp to the spike and port of the other bag. A further hook shaped arm pivotally mounted to the base is moveable against a bag port to hold the port immoveably straight as it is engaged by the spike.

Abstract: A machine for infusion and withdrawal of fluid from the peritoneal cavity of a person. A plurality of bags of fluid each rests atop spaced apart trays arranged in a stack and supported by a vertical secondary frame slidably mounted in a main frame. Moveable pins mounted to the main frame sequentially support the secondary frame and an adjacent tray until the entire secondary frame and stack of trays move downwardly pass the pins. The trays include clamping mechanisms engaged with the tubular ports of each bag to control fluid flow through the port of a particular bag supported by a tray. Pins are fixedly mounted to bars slideably mounted to the main frame and moved either manually or by means of a solenoid to control movement of the trays and secondary frame and thus fluid flow.

Abstract: A spike exchanger to move a spike from one peritoneal dialysis bag to another. A pair of peritoneal dialysis bags are mounted to a base having clamps for releasably closing the tubular ports of each bag. A patient connectable tube with a spike shaped end is removably mounted to a bar slidably mounted on the base and guided by means of a slot and roller combination to the tubular port of either bag. Three embodiments of the slot roller mechanism guide the spike shaped end to the tubular ports.