Hospira launched their "smart pump," made up of wireless pump, patient safety app, and associated server, 18 months ago. Like all the other smart pumps, the customer's formulary is stored in the pump. The MedNet application suite is scheduled to release mid year. Integration with Cerner is expected to release several weeks before a Bridge Medical interface. Hopira refers to these vendors as BPOCs, Bedside Point Of Care vendors.
Patient ID and associated medication orders are controlled by the BPOC. The user scans barcodes for the patient, pump, med and user, and then pump settings for the ordered med are pushed into the pump. The barcode scanner is connected to the BPOC via whatever client device is used by the BPOC. I would imagine Cerner uses a PDA with built in scanner, but a COW (computer on wheels) or tablet could be used.
Interestingly, patient context is never established in the pump. All the heavy lifting is done by the BPOC. What Hospira has developed is the wireless connectivity, formulary management app, server, QA database of anonymous data, and integration with the BPOC.
Patient safety features include checking pump settings against the formulary, ensuring the right drug is administered to the right patient (via all that barcode scanning), and that pump delivery settings accurately reflect the order. There is no alarm notification beyond local alarms on the pump itself.
Their WLAN link is 802.11 b, using an Alaris developed component radio.
See Hospira's investor presentation that covers wireless here. You can read their MedNet fact sheet here.