Smiths Medical Recalls Certain Medfusion 3500 and 4000 Syringe Infusion Pumps for Software Issues That May Impact Infusion Delivery Smiths Medical Recalls Certain Medfusion 3500 and 4000 Syringe Infusion Pumps for Software Issues That May Impact Infusion Delivery Wednesday, July 20, 2022 0 298 Software issues affecting certain Medfusion Syringe Infusion Pumps could impact infusion delivery to patients.