Overview of the UAM

1. OVERVIEW OF THE UAM
Gradian Health Systems
Simulation-Based Product Training

2. Agenda
I. UAM Overview
a. Product Description
b. Introduction Video
II. Feature Review
a. Five Oxygen Sources
b. Flow Meters
c. Nitrous Oxide
d. Back Bar
e. UAM Vaporizers
f. Breathing Block
g. Fenton Balloon
h. Scavenging Port
UAM Simulation Training I Lecture Content | Overview of UAM 2

3. UAM Overview: Product Description
• Inhalational anesthesia workstation invented in
Malawi and manufactured in the UK
• Designed to overcome barriers to providing
anesthesia by working without electricity and
concentrating its own medical grade oxygen
• Seamlessly transitions between 1) continuous-flow
and draw-over anesthesia and 2) between IPPV &
spontaneous ventilation (no APL valve)
• Vaporizers for halothane, isoflurane, and
sevoflurane, and provision for nitrous oxide option
• Comes with a standard 3-year service warranty
that covers parts and labor
• Certified by CE
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UAM Simulation Training I Lecture Content | Overview of UAM

4. Five Oxygen Sources
1. Oxygen
Concentrator
2. Draw-Over
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3. Pin-Index Cylinder
4. External Flowmeter
5. Pipeline Inlet
The UAM’s oxygen concentrator requires mains power to function,
and when mains fails, it seamlessly transitions to draw-over to
enable the continuation of anesthesia with room air. Should any of
the other sources of medical grade oxygen be available, the user
may switch to one of the three options.
UAM Simulation Training I Lecture Content | Overview of UAM

5. Oxygen Concentrator Overview
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• The UAM’s inbuilt oxygen
concentrator draws in room air using
its inbuilt compressor
• As the concentrator draws in room air,
it first passes through a filter to
capture particulate matter in the air
• The filtered air then passes through
the oxygen concentrator’s sieve
towers which are full of zeolite,
capturing the nitrogen in room air and
outputting up to 95% oxygen
• The concentrator is then able to
achieve a flow of up to 10 LPM
UAM Simulation Training I Lecture Content | Overview of UAM

6. Flow Meters
The UAM’s flow
meters allow the user
to regulate the
amount of oxygen
(and nitrous oxide, if
available) being
delivered to the
patient
Oxygen
Nitrous Oxide
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UAM Simulation Training I Lecture Content | Overview of UAM

7. Nitrous Oxide
• Safety Cut-Off | Only allows
delivery of nitrous oxide if oxygen
monitor reads above 25% & and
an alarm will show on the oxygen
analyzer
• Provision for nitrous oxide using
either pipeline or cylinders
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UAM Simulation Training I Lecture Content | Overview of UAM

8. Back Bar
• The air inlet allows room air to
enter the system when the gas
flow is low or the power is off
• Pressure relief limits pressure
in back bar to 5 cm water
• Reservoir bag can store up to 2
liters of oxygen; reacts to gas
supply and patient demand (do
not squeeze)
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UAM Simulation Training I Lecture Content | Overview of UAM

9. UAM Vaporizers
• All UAM vaporizers are low-
resistance, designed for use at
ambient pressure
• Non-keyed filling
• Available for halothane,
isoflurane, and sevoflurane
• The silver button on the selector
wheel is used to unlock from the
off position
• Empty the vaporizer every
months to protect against
accumulation of thymol
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UAM Simulation Training I Lecture Content | Overview of UAM

10. Design Updates
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In late-2018, the UAM underwent a series of design
updates, and while some units may look different
functionality hasn’t changed at all
The primary change was
to the midsection of the
UAM, specifically the
breathing block to ease
manufacturing
We will highlight points of
distinction throughout the
feature review
Rev A Rev B
UAM Simulation Training I Lecture Content | Overview of UAM

11. Breathing Block
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One-way valves
(embedded in
Rev B)
Pressure gauge
Manual bellows
Rev A Rev B
Fenton balloon
Scavenging port
Note: The Rev A breathing block was integrated into the body of the machine
while the Rev B breathing block attaches to the side panel and is fully
removable.
UAM Simulation Training I Lecture Content | Overview of UAM

12. Fenton Balloon
One Way Port | With each
inspiration, the balloon
inflates and seals the exit
and with each expiration it
collapses as the patient
breathes out. This design
ensures that the system
loses no anesthetic agent
when the patient is
breathing in, and that the
expired breath (with CO2)
exits the system without
any chance of the patient
rebreathing.
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Rev A Rev B
Do not open the balloon housing to inspect the Fenton Balloon
without the presence of a Gradian-certified engineer or technician
Rev A: The Fenton Balloon is
visible, encased in a clear
housing
Rev B: The Fenton Balloon is
not visible, encased in a metal
housing
UAM Simulation Training I Lecture Content | Overview of UAM

13. Scavenging Port
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Rev A Rev B
The taper at the end of the Fenton Balloon casing is a 30
mm ISO taper for connection designed to attach to a
scavenging hose
Gradian provides reusable 30mm scavenging hoses to
attach to the port or standard scavenging device
UAM Simulation Training I Lecture Content | Overview of UAM