Syringe Pumps

TopicsDiagramsPrinciples of Operation Applications Safety OperationPreventive MaintenanceCommon Failure ModesTroubleshootingNew Technology

Diagrams

Principles of Operation Syringe pumps use a series of sensors and a motor driven plunger head to infuse liquid at a precise rate

Inputs Outputs AC Moving Plunger Full syringe Liquid released at steady rate

Principle of Operation Chassis contains: LCD screen Alarm to alert user of failures and other issues that need attention Power supply 2 power distribution boards Memory capabilities Records doses, rates, and settings

Principles of Operation Chassis contains: Flange clamp sensorDetermines if syringe flange is present Barrel clamp sensorDetermines if barrel of syringe is present Determines size of syringe Position sensor Determines how far plunger head is from chassis

Principles of Operation Chassis contains: Motor and worm gear Smoothly moves plunger head outwards Unidirectional

Pyramid shaped reflective counter Rotates with motor Counts rotations by reflecting light back at a sensor

Principles of Operation Plunger head contains: Force sensor Syringe plunger pushes against sensor Springs attached to plunger flippers and force sensor detect presence of syringe plungerClutch & lever to allow and prevent plunger from moving freely

ApplicationsInfuse fluids, medication or nutrients into circulatory systemAdministers fluids more reliably than humansImprove patient safety by increasing consistency and accuracyAssist in investigation of incidents by collecting data in memory

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SafetyAlways use PPE Read manual before using

OperationPlace syringe in three clamps (flange, barrel, plunger flippers) Designate infusion settings on screenPress start Bolus option: quickly moves plunger head to prime syringe Always pay attention to alarm warnings Use Biomed option for troubleshooting help

Preventive MaintenanceReplace IV tubing, cassette, and/or syringeClean machine and chassis of any solution residueVerify software and menu settings are appropriate for clinical applicationExamine controls and switches for proper functionConfirm lights, indicators, and displays are workingVerify flow stops when device is turned offIf device includes a feature that requires the IV set to be closed before it is disconnected (either automatically or manually), verify that this mechanism is operating properlyCheck rollers and tubing to see if replacement is necessaryRun self-test, if equipped

Preventative MaintenanceExamine plug and line cordVerify battery chargers and indicators are workingCheck suggested replacement date for the battery to see if the date is passed or approachingCalibrate machine as necessaryCheck for unusual noise or vibrationExamine internal cables and connectorsLubricate as required by syringe pump manufacturer

Common Failure ModesNo powerBattery not holding chargeNo displayBad keypadsBroken handlesFlash memory errorsPlunger sensor errors (syringe)

Trouble-shooting

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