Plum A+ Infusion System with Hospira MedNet List 20792-04-25, Pole Clamp Assembly Part Number 820-95443-008. A cassette based multi-function infusion system. Each system includes a pumping module and an assortment of disposable IV sets, optional accessories, and an operator's manual. The pole clamp assembly is used to provide a mechanism to tighten and loosen the grip of the pole clamp to remove the infuser from the IV pole.