Transcript Lecture 5 Syringe Pumps

Syringe Pumps
Topics
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Diagrams
Principles of Operation
Applications
Safety
Operation
Preventive Maintenance
Common Failure Modes
Troubleshooting
New 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 sensor
 Determines if syringe flange is present
 Barrel clamp sensor
 Determines 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
plunger
 Clutch & lever to allow
and prevent plunger
from moving freely
Applications
 Infuse fluids, medication or nutrients into
circulatory system
 Administers fluids more reliably than humans
 Improve patient safety by increasing
consistency and accuracy
 Assist in investigation of incidents by collecting
data in memory
Safety
 Always use PPE
 Read manual before using
Operation
 Place syringe in three clamps (flange,
barrel, plunger flippers)
 Designate infusion settings on screen
 Press “start”
 Bolus option: quickly moves plunger head to
prime syringe
 Always pay attention to alarm warnings
 Use Biomed option for troubleshooting
help
Preventive Maintenance
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Replace IV tubing, cassette, and/or syringe
Clean machine and chassis of any solution residue
Verify software and menu settings are appropriate for
clinical application
Examine controls and switches for proper function
Confirm lights, indicators, and displays are working
Verify flow stops when device is turned off
If 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 properly
Check rollers and tubing to see if replacement is necessary
Run self-test, if equipped
Preventative Maintenance
 Examine plug and line cord
 Verify battery chargers and indicators are working
 Check suggested replacement date for the battery to see
if the date is passed or approaching
 Calibrate machine as necessary
 Check for unusual noise or vibration
 Examine internal cables and connectors
 Lubricate as required by syringe pump manufacturer
Common Failure Modes
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No power
Battery not holding charge
No display
Bad keypads
Broken handles
Flash memory errors
Plunger sensor errors (syringe)
Troubleshooting