S E C T I O N 5
•
P r i n c i p l e o f O p e r a t i o n
12
HOTLINE
®
Blood and Fluid Warmer | Operator’s Manual
SECTION 5
Principle of Operation
HOTLINE
Warmer delivers blood and intravenous fluid at
normothermic temperatures under routine, gravity flow rates.
Conventional fluid warming systems suffer from cool-down between the
warmer and the patient connection. HOTLINE
Warmer overcomes this
problem by providing active warming of the patient line all the way to the
patient connection.
Active warming is achieved by surrounding the sterile intravenous line
with a layer of precisely controlled warm recirculating solution (
a
)
, thereby
protecting the patient line against exposure to cold and eliminating patient
line cool-down.
The unique design of the HOTLINE
Fluid Warming Set allows blood and
intravenous fluid to be delivered to the patient at normothermic
temperature at gravity flow rates to 50-5,000 ml/hr.
Infusate Delivery Temperatures
The following table shows the typical infusate delivery temperatures
at the patient end of an L-70 HOTLINE
Fluid Warming Set.
Note: The setpoint temperature of the recirculating solution is
40.0
C.
a
a
0
500 1000 1500 2000 2500 3000 3500 4000 4500 5000
Flow Rate (ml / hr)
20° C Saline
10° C Saline
T
emperature ° C
40.0
36.0
32.0
28.0
24.0
20.0
22.0
42.0
38.0
34.0
30.0
26.0
Ambient Temperature Range: 20° C ± 2° C
Source data on file