Gaymar medi-therm III MTA6900 series User manual

Medi-Therm®IIIMedi-Therm®III
Manual Mode
Automatic
Mode
Monitor Mode
P/N 100974000 Rev C 1/11
Operator's Manual
LISTED 303L
STANDARD [NORME]
C22.2 No. 125 RISK
CLASS [CATEGORIE DE
RISQUES] NO. 2G
R
Medi-Therm®III
Hyper/Hypothermia
Machine
MTA6900 Series
GAYMAR
®
GAYMAR INDUSTRIES, INC.
10 Centre Drive
Orchard Park, NY 14127-2295
Phone:
1 800 828-7341
[phone]
FAX: [phone]
[phone]
www.gaymar.com
UL
®

Medi-Therm®IIIMedi-Therm®III
Table of Contents
Section Description Page
1.0 Safety Precautions .......................1
2.0 Description ...................................2
3.0 Features .......................................3
4.0 Operator Control Panel ................4
5.0 Start-up Procedure.......................5
6.0 Shutdown Procedure....................7
7.0 Modes of Operations....................8
Manual Mode ...............................8
Automatic Mode .........................10
Monitor Mode .............................12
8.0 Patient Safety.............................14
9.0 Care of Medi-Therm III ...............16
10.0 Alerts/Troubleshooting ...............18
11.0 Blankets/Accessories .................20
12.0 Customer Training......................20
13.0 Warranty.....................................20
Illustrations
Figure Description Page
1 Medi-Therm III System ................2
2 Medi-Therm III Features..............3
3 Medi-Therm III Control Panel ......4
4 Pinch Clamps ..............................5
5 Quick-disconnects .......................6
6 Clik-Tite Connector......................6
7 Float ............................................6
8 Manual Mode...............................9
9 Automatic Mode ........................10
10 Monitor Mode ............................12
11 Probe Check Well......................17
Important
U. S. Federal law restricts this device to sale by
or on the order of a physician.
Read and understand this Medi-Therm III
Operating Manual and all Safety Precautions
(see page 1, section 1.0 and pp. 14–15, section
8.0) prior to using the Medi-Therm III
Hyper/Hypothermia Machine.
Medi-Therm and Clik-Tite are registered trademarks of Gaymar Industries, Inc.
© 2000. Gaymar Industries, Inc. All rights reserved. www.gaymar.com
Before you begin . . .
Receiving Inspection
Refer to the Medi-Therm III Service Manual for
Receiving Inspection and Check-out Procedures.
If you have any questions, contact Gaymar's
Technical Service Department for assistance.
Telephone: [phone]
[phone]
Fax: [phone]
Indications for Use
The Medi-Therm is intended for use in supplying
warm or cold water at controlled temperatures
via water circulating blankets or body wraps for
the application of regulating patient temperature
in situations where a physician determines that
temperature therapy is necessary and desirable.
Indications for use for the Medi-Therm thermal
regulating system include:
1. To maintain pre-set body temperature as
determined by the physician.
2. To maintain normal body temperature during
surgical procedures.
3. For use in all hospital areas including
invasive and coronary care units, in
operating, recovery, and emergency rooms,
in burn units and on medical / surgical oors.
4. This system can be used with adult and
pediatric patients.
5. Monitoring and controlling patient temperature.

Medi-Therm®IIIMedi-Therm®III
1.0 Safety Precautions
Read and understand this operating manual and
all precautions listed below prior to using the
Medi-Therm III Hyper/Hypothermia Machine.
Do not use the Medi-Therm III machine in
the presence of ammable anesthetics.
Risk of explosion can result.
• If the patient’s temperature is not responding
or does not reach the prescribed temperature
in the prescribed time or deviates from the
prescribed temperature range, notify the
attending physician promptly. Failure to
notify the physician promptly may result
in serious injury or death.
• Power interruption will cause the Medi-
Therm III machine to go into a standby mode,
resulting in no therapy to the patient. Follow
instructions for desired mode to resume
operation. Failure to resume therapy could
result in serious injury or death.
• When performing the (p. 18, 10.1.2, item 4)
use a protective sheath on the probe. Failure
to use a sheath could result in cross-
contamination.
• A physician’s order is required for use of
equipment. Check the integrity of the skin
according to department protocol when
regulating temperature with external
devices. Frequency of assessment and
documentation will vary depending upon
the individual response of the patient.
Failure to monitor patient may result in
skin damage or inappropriate patient
temperature.
• Avoid placing additional heat sources
between the patient and blanket. Skin
damage may result.
• Prevent excessive and/or prolonged tissue
pressure and shearing forces, especially
over boney prominences. Skin damage may
result.
(continued next column)
•Fill with distilled water only. Failure to use
distilled water may result in poor machine
performance. Do not use alcohol. Alcohol
may accelerate blanket deterioration. Do
not operate without water, since damage
to internal components may result. Do not
overll. Overlling may result in overow
because the water in the blanket drains back
into the machine when the machine is turned
off.
•Place a dry absorbent sheet between the
patient and the blanket when using all-vinyl
blankets. Moisture may accumulate which
may result in skin damage.
•Keep the area between the patient and the
blanket dry. Excessive moisture may result
in skin damage.
• Do not tip machine over without rst draining
the water out and unplugging the power
cord. Damage to the machine or electrical
shock can result.
• Repairs should be performed by qualied
personnel such as certied biomedical
electronics technicians or certied clinical
engineers familiar with repair practices for
servicing medical devices, and in accordance
with the . Do not attempt repairs to Gaymar
medical equipment unless you possess
these skills. Damage to the machine or
malfunction may otherwise result.
• All wire-lead, patient-connected transducer
assemblies are subject to reading error,
local heating, and possible damage from
high-intensity sources of RF energy.
Inadequately grounded electrosurgical
equipment represents one such source,
since capacitively-coupled currents may
seek alternate paths to ground through
probe cables and associated instruments.
Patient burns may result.
If possible, remove the probe from patient
contact before activating the surgical unit
or other RF source. If probes must be used
simultaneously with electrosurgical apparatus,
hazards can be reduced by selecting a
temperature monitoring point which is remote
from the expected RF current path to the
ground return pad.
Safety Precautions
1
Blankets / Accessories / Training / Warranty
20
12.0 Customer Training
In-service training is recommended and can be
arranged through your Gaymar Representative.
Comprehensive repair and maintenance training is
also available through Gaymar Technical Services
(for telephone numbers, see back cover).
13.0 Warranty
The Medi-Therm III Hyper/Hypothermia machine
is warranted free of defects in material and
workmanship for a period of two (2) years under
the terms and conditions of the Gaymar warranty
in place at the time of purchase. The compressor
portion of the machine carries a ve (5) year
prorated warranty. Contact Gaymar Technical
Service if you have questions about warranty or
repair.
11.0 Blankets/Accessories
Adult and pediatric size blankets are available in all
vinyl or vinyl with nonwoven fabric surfaces.
SINGLE PATIENT USE BLANKETS, PLASTIC
WITH NONWOVEN FABRIC
DHP810 O.R. Table and General Use
25" x 64"
DHP812 Pediatric General Use
22" x 33"
DHP813 Adult General Use
30" x 64"
SINGLE PATIENT USE BLANKETS, ALL VINYL
DHP901 Adult General Use
25" x 69"
DHP902 Pediatric General Use
25" x 36"
REUSABLE BLANKETS, HEAVY DUTY VINYL
HP7010 Adult General Use
25" x 69"
HP7020 Pediatric General Use
25" x 36"
All blankets and wraps require reusable DBK9
connector hoses.
ACCESSORIES
DBK9 Connector Hose
10'
HBX8 Hose Extension
10'
PAT101 Adult Reusable Probe
(YSI 400 series)
PAT102 Pediatric Reusable Probe
(YSI 400 series)
DP400CE Disposable Probe, Adult and
Pediatric (YSI 400 series)
ADP10CE Reusable Probe Adaptor
MTA33 Germicide/Algaecide
CAUTION
DANGER
WARNING
WARNING

Medi-Therm®IIIMedi-Therm®III
incorrect probe is being used.
Use only YSI 400 Series probes or
equivalent.
c. If probe appears defective, try another
probe and repeat PROBE CHECK. If a
new, correct probe does not meet this test,
remove machine from use and notify your
medical equipment repair department.
10.1.3 Add Water
Check to make sure water is at the proper level by
raising the cover on the water ll opening. If green band
on oat is not visible, ll with distilled water until the
green band is visible (g. 7, p. 6). If green band on oat
is visible, do not add water—remove machine from use
and notify your medical equipment repair department.
• Add distilled water only.
Failure to use distilled water may result in poor
machine performance.
• Donot use alcohol. Alcohol may accelerate
blanket deterioration.
• Donot operate without water. Damage to
internal components may result.
• Donot overll. Overlling may result in
overow because the water in the blanket
drains back into the machine when the machine
is turned off.
10.1.4 Remove From Use Now /
Machine Shutdown
This alert indicates that the machine has shut down due
to the blanket water temperature exceeding the high
or low limit, or if a system error is detected. Remove
machine from use immediately. Notify your medical
equipment repair department.
2
Description
2.0 Description
This manual describes the operation of the
Medi-Therm III Hyper/Hypothermia machine.
The Medi-Therm III Hyper/Hypothermia machine
provides a means of regulating patient temperature
by supplying temperature-controlled water through
a connector hose to a Gaymar Hyper/Hypothermia
blanket. The companion blanket provides the
interface for heating or cooling the patient. A patient
probe senses patient temperature.
Figure 1—Medi-Therm III Hyper/Hypothermia System
The Medi-Therm III machine, Hyper/Hypothermia
blanket, connector hose, and patient probe comprise
the Medi‑Therm III system (g. 1).
Please read and understand the precautions on
page 1 and the following operating instructions
before attempting to use the Medi-Therm III system.
In addition, we recommend you request in-service
training from your Gaymar representative.
10.2 Troubleshooting
10.2.1 Blanket Will Not Heat
1. Check that water is circulating through the blanket.
If there is no circulation, the CHECK WATER
FLOW alert should light. If CHECK WATER
FLOW is lit, refer to Alerts section (pp. 18-19) for
corrective measures. Do not fold blankets.
2. Check that the temperature control is operating
by pressing the MANUAL mode button and
then adjusting the SET POINT temperature to
at least 2°C (3.6°F) above the indicated blanket
temperature. This should cause the HEAT
indicator to light.
10.2.2 Blanket Will Not Cool
1. Check to see if water is circulating through the
blanket. If there is no circulation to the blanket,
the CHECK WATER FLOW alert should light.
If CHECK WATER FLOW is lit, refer to Alerts
section (pp. 18-19) for corrective measures. Do
not fold blankets.
2. Check that rear and side air vents are not blocked.
Inlet and exhaust grills should be kept clear and
clean to allow air to circulate freely.
3. Check that the temperature control is operating
by changing the SET POINT temperature to at
least 2°C (3.6°F) below the indicated blanket
temperature. This should cause the COOL
indicator to light.
10.2.3 Machine Will Not Turn On
1. Make sure the power cord is plugged in.
2. Reset the ON/OFF switch (circuit breaker) by
turning it rst off, then on.
3. If the machine still does not turn on, remove
machine from service and notify your medical
equipment repair department.
10.2.4 On/Off Switch Is Turned On,
But Control Panel Is Dark And
No Operating Sound Is Coming
From Machine
Remove machine from use and notify your medical
equipment repair department.
Alerts / Troubleshooting
19
CAUTION

Medi-Therm®IIIMedi-Therm®III Features
Figure 2—Medi-Therm III features
3.0 Features
Please familiarize yourself with the location and
purpose of the features (g. 2) before reading the
start-up procedures or attempting to operate the
Medi-Therm III Machine.
Water Fill Opening
Lift cover. Fill unit with distilled
water until green band on
oat is fully visible (p. 6)
Operating Instructions
& Precautions
Condensed instructions are located
on the cover of the water ll
opening and on the rear-facing side
of the Operator Control Panel's
sloped surface.
ON/OFF Switch
(Circuit Breaker)
Controls power to
Medi-Therm III.
Blanket Connections &
Probe Check Well
Quick-disconnects facilitate
connection to blanket water
supply (p. 6). PROBE CHECK
well veries patient probe
(p. 18).
Patient Probe Jack
Accepts patient probe plug
connecting patient probe to
machine (pp. 10, 12). Use
YSI 400 series probe or
equivalent.
Operator Control Panel
Identies displays, indicators, and
controls used in Medi-Therm III
operation (pp. 4-5).
318
Alerts / Troubleshooting
Most Medi-Therm III operating problems are minor and
can be corrected by the operator. The following are
alerts and troubleshooting details.
Repairs should be performed by qualied
personnel such as certied biomedical electronics
technicians or certied clinical engineers familiar
with repair practices for servicing medical
devices, in accordance with the Medi-Therm III
Service Manual.Do not attempt repairs to the
Medi-Therm III machine unless you possess
these skills.
Damage to the machine, malfunction, or
electrical shock may otherwise result.
10.1 Alerts
The Medi-Therm III machine has both visual and audible
alert indicators to help you identify machine or operator
caused problems. An explanation of these signals and
their probable causes follow. Perform corrective action in
the sequence listed.
10.1.1 Check Water Flow
Circulation of water through the blanket has been
restricted. Air bubbles in the blanket may remain
stationary although water is owing; a few bubbles do
not adversely affect operation of the blanket.
To locate and correct the source of low ow:
1. Check that hoses are fully inserted and seated
into one RETURN (top) and one SUPPLY
(bottom) connector on the machine.
(See Start-up Procedure, p. 6.)
2. Check that all pinch clamps are fully open.
3. Check that hoses are not kinked or pinched off.
Make sure blanket is at and not creased. If a
blanket is used with patient in sitting position, ow
may be pinched off.
4. Conrm that water supply is at proper level.
5. Turn off machine. Close all pinch clamps.
Disconnect blanket from connector hose. Direct
connector hoses into water ll opening, start
machine, and select MANUAL or AUTO mode.
Open connector pinch clamps. If there is still no
ow, turn machine off and remove from use.
10.1.2 Check Patient Probe
Indicates that the patient probe is sensing below 29°C
(84.2°F) or above 45°C (113°F), and is not a normal
patient temperature.
If CHECK PATIENT PROBE light comes on,
therapy will stop (in AUTO mode only), status
lights will go out, and no additional heating or
cooling will occur until the problem is corrected.
1. CHECK PATIENT PROBE audible alarm can
be silenced for ve minutes while diagnosing
problem by pressing SILENCE ALARM.
2. CHECK PATIENT PROBE alert may sound
if machine is placed in MANUAL, AUTO, or
MONITOR mode before patient probe has been
inserted in patient, since probe will be sensing
room temperature. Place probe in patient and
wait ve (5) minutes before pressing MANUAL,
AUTO, or MONITOR mode button.
3. Check probe to make sure it has not become
dislodged from patient. Reinsert and tape
securely if required. Wait ve (5) minutes before
pressing AUTO mode button.
4. Perform PROBE CHECK:
a. Insert probe into protective sheath and
then into PROBE CHECK WELL on front
of machine base (g. 11, p. 17).
When performing the PROBE CHECK,
use a protective sheath on the probe.
Failure to use a sheath could result
in cross-contamination.
b. Operate machine in MANUAL mode with
a blanket connected. Adjust SET POINT
temperature to between 33°C (91.4°F)
and 37°C (98.6°F). Wait until machine
temperature stabilizes (IN-TEMP lights
and patient temperature display stabilizes).
Blanket and patient temperature displays
should read within 2°C (3.6°F) of each other.
If not, patient probe may be defective or
10.0 Alerts/ Troubleshooting
WARNING
WARNING
WARNING

Medi-Therm®IIIMedi-Therm®III
Operator Control Panel
4
Figure 3—Medi-Therm III Control Panel
4.0 Operator Control Panel
The control panel is divided into sections according
to function and use. The principal panel sections are
identied in gure 3.
STATUS SECTION
STATUS displays light to indicate both the machine’s
ow status and how the blanket water temperature
is being controlled to reach the desired temperature
setting. STATUS displays function in both MANUAL
and AUTO modes.
FLOW-OK indicates blanket water is owing
adequately.
HEAT indicates blanket water is being heated.
The maximum blanket temperature is 42°C
(107.6°F).
IN-TEMP indicates the Medi-Therm III is controlling
temperature at the desired setting.
COOL indicates blanket water is being cooled.
Minimum blanket temperature is 4°C (39.2°F).
ALERT SECTION
ALERT indicators light when some form of
operator action is required. In addition to the visual
indicator, an audible alarm may sound. ALERT
controls allow the Medi-Therm III operator to test
panel lights or to silence the audible alarm.
CHECK WATER FLOW indicates the
ow of water to the blanket has been restricted.
The operator can choose whether an audible alarm
accompanies this alert. (p. 7, section 5.6)
CHECK PATIENT PROBE indicates the
patient probe is sensing an abnormal patient
temperature (below 29°C [84.2°F] or above 45°C
[113°F]). It may indicate the patient probe has
become dislodged, an incorrect probe is being used,
or a probe has become defective. An audible alarm
accompanies this alert.
ADD WATER indicates the water reservoir is
lled to less than the recommended level.





9.4 Probe Check Well Care
The PROBE CHECK WELL should be cleaned with a
small tubular brush and detergent, and then wiped with
a commercial disinfectant.
When performing the PROBE CHECK,
use a protective sheath on the probe.
(Becton-Dickinson catalog 3700 oral sheath
or equivalent.
Failure to use a sheath could result in
cross-contamination.
Figure 11—Probe Check Well
9.5 Quick Disconnects
The quick-disconnects joining the connector hose to
the machine may become difcult to engage. This
problem can be eliminated by applying a silicone
base or light machine oil to the outside of the male
connector prior to engagement.
9.6 Draining Machine
It is not necessary to drain the Medi-Therm III
machine after each use. However, periodic draining is
recommended at least once a month.
To lower the water level, close both pinch clamps on
the connector hose. Place the end with both Clik-
Tite connectors into a sink or pail. Open the pinch
clamps. Press the ON/OFF switch to ON and press
MANUAL mode button. The machine will pump the
water reservoir empty. Press ON/OFF button to OFF
when CHECK WATER FLOW lights. After the water
is pumped out, do not leave the machine on or it may
overheat.
Preventive maintenance and service procedures
are described in the Medi-Therm III Service Manual.
These procedures should be performed by qualied
personnel such as certied biomedical electronics
technicians or certied clinical engineers.
Care of Medi-Therm III
17
DANGER

Medi-Therm®IIIMedi-Therm®III
REMOVE FROM USE NOW / MACHINE
SHUTDOWN indicates the Medi-Therm III has shut
down due to blanket water temperature exceeding either
the high or the low limit. An audible alarm accompanies
this alert. Remove the Medi-Therm III machine from
use immediately.
TEST LIGHTS conrms that all indicator lights and
digital displays are working, and that the audible alarm
is functioning. The displays ash and the audible alarm
sounds as long as the TEST LIGHTS button is pressed.
SILENCE ALARM temporarily silences the audible
alarm. The alarm will reactivate in approximately 5
minutes if the condition persists.
NOTE: The SILENCE ALARM button will not function
if the REMOVE FROM USE NOW / MACHINE
SHUTDOWN indicator is lit.
MODE SECTION
The SELECT indicator lights when a choice of operating
modes is required. MODE buttons select the desired
operating mode. Patient therapy is provided in either
MANUAL or AUTO mode. A third mode, MONITOR, may
be used to monitor patient temperature without providing
therapy. After the mode button is pressed,
the indicator at the top of the mode button lights.
In AUTO mode, one of three additional CONTROL
OPTION indicators light.
MANUAL selects the manual mode of operation.
In MANUAL mode, the operator must observe patient
temperature and adjust the blanket water set point
temperature to obtain the desired results.
AUTO selects the automatic mode of operation.
In AUTOMATIC mode, the operator sets the desired
temperature and the patient temperature is automatically
regulated to the operator specied set point. Automatic
cooling can be adjusted to RAPID, MODERATE, or
GRADUAL rates by pressing the AUTO button again.
MONITOR selects the monitor mode of operation.
In MONITOR mode, the operator may monitor
patient temperature without providing therapy.
TEMPERATURE SECTION
TEMPERATURE displays identify BLANKET,
PATIENT,
and SET POINT temperatures.
BLANKET indicates the actual temperature of the
water being delivered to the blanket. This display is
illuminated when MODE is set to either MANUAL or
AUTO.
PATIENT indicates actual patient temperature as
sensed by the probe connected to the patient probe
jack. This display is illuminated when MODE is set to
MANUAL, AUTO, or MONITOR and a patient probe
is plugged into the PATIENT PROBE jack.
SET POINT indicates the desired SET POINT
temperature. When operating in MANUAL mode,
pressing the SET POINT button (“∇” or “∆”) sets
the desired BLANKET water temperature. When in
AUTO mode, pressing the SET POINT button sets
the desired patient temperature.
°C/°F displays the temperature in either degrees
Celsius (°C) or Fahrenheit (°F). Pressing the °C/°F
button will display the corresponding indicator.*
5.0 Start-up Procedure
For your convenience, condensed versions of
the following instructions have been permanently
mounted on the cover of the water ll opening and
on the rear-facing side of the Operator Control
Panel's sloped surface.
Perform the following start-up procedure each time
the Medi-Therm III system is placed in operation:
5.1 Close Pinch Clamps
Pinch clamps are provided on both the connector
and blanket hoses to prevent water spillage when
blankets are changed (g. 4).
Close the pinch clamps on the connector hose and
Hyper/Hypothermia blanket.
*Some models do not have the °C/°F feature.
Start-up Procedure
5


Figure 4—Pinch Clamps
Care of Medi-Therm III
16
9.0 Care of Medi-Therm III
As with any precision equipment, proper care
and maintenance will insure proper performance
and reliability. The following routine maintenance
procedures will help insure dependable Medi-Therm III
operation.
9.1 Machine Care
Do not tip machine over without rst draining
the water out and unplugging the power cord.
Damage to the machine or electrical shock
can result.
• Add distilled water only.
• Failure to use distilled water may result in
poor machine performance.
• Donot use alcohol. Alcohol may accelerate
blanket deterioration. Alcohol is ammable.
• Donotoperate without water, since damage to
internal components may result.
• Donot overll. Overlling may result in
overow because the water in the blanket
drains back into the machine when the
machine is turned off.
• Donot use bleach. Bleach will damage
the heating element, which could result in
excessive leakage.
NOTE: • The Medi-Therm III control panel and top
surfaces can be cleaned with a soft cloth
lightly dampened with isopropyl alcohol.
• Clean up any accidental spills
immediately—use a cloth lightly dampened
with isopropyl alcohol.
• You may check for clarity of uid by
viewing water owing through clear vinyl
blanket.
9.2 Blanket Care
• Allow the blanket to remain connected to the
Medi-Therm III machine for about 10 minutes
after the machine has been turned off. This
will allow most of the water to drain back into
the machine.
• Reusable blankets should be cleaned with
a damp cloth and mild detergent. Exposure
to harsh chemicals will cause blankets to
lose exibility and reduce their resistance to
cracking.
• When storing reusable blankets, they should
be rolled loosely. (Do not allow to freeze.)
Single-patient use blankets should be
discarded after use.
• Reusable blankets can often be repaired
using a vinyl patch kit. Do not return blankets
to factory for repair.
9.3 Probe Care
• Do not autoclave. If probe must be sterilized,
refer to the instructions supplied with the
probe.
• Reusable probes may be cleaned with a
damp cloth and mild detergent. Always wipe
dry. Exposure to harsh chemicals will cause
probe to lose exibility and resistance to
cracking.
• Disposable probes should be discarded after
use.
CAUTION
WARNING

Medi-Therm®IIIMedi-Therm®III
CAUTION
Add distilled water only. Failure to use
distilled water may result in poor machine
performance.
Do not use alcohol, which may accelerate
blanket deterioration.
Do not operate without water, since
damage to internal components may result.
 Donotoverll. Overlling may result in
overow because the water in the blanket
drains back into the machine when the
machine is turned off.
6
5.2 Attach Blanket
Attach the Hyper/Hypothermia blanket to the
Medi‑Therm III machine (g. 1, p. 2):
a. Connect a Gaymar Model DBK9 connector hose to
the Medi-Therm III machine. The hose is ten feet
long. It has quick‑disconnect (metal) ttings for the
Medi-Therm III machine end and Clik-Tite®(plastic)
connectors for the blanket end.
To connect the hose, attach one quick-disconnect
tting to the RETURN machine connection (top)
and one to the SUPPLY (bottom). See gure 5. To
insure a tight connection, push the retaining collar
toward the cabinet and insert the quick-disconnect
tting rmly. While holding the tting, allow the
retaining collar to snap back into position. Check
to make sure the tting is fully engaged by tugging
rmly on the hose tting.
b. Attach the two Clik‑Tite connectors (g. 6) on the
connector hose to the blanket. Insert the male
tting into the female. When ttings are fully
seated, snap the locking ring into place to assure a
positive lock.
Start-up Procedure
Figure 5—Quick-disconnects
Figure 6—Clik-Tite Connector
Figure 7—Float, showing proper water level
5.3 Open All Pinch Clamps
Open all pinch clamps on the connector hose and
the Hyper/Hypothermia blanket.
Failure to open the pinch clamps will prevent water
ow and will trigger the CHECK WATER FLOW alert.
5.4 Check Water Level
Check to make sure water is at the proper level by
raising the cover on the water ll opening. Fill with
distilled water until the green band on the oat is
fully visible (g. 7).
Local ischemia can follow the application
of pressures exceeding capillary pressure
resulting in tissue necrosis. This local effect
may be enhanced by generalized impairment
of the circulation, local shearing forces and
increased metabolic demand because of
temperature elevation. Pathological changes
may begin in two (2) hours.
• Keep the area between the patient and the
blanket dry.
Excessive moisture may result in skin
damage.
The application of heating or cooling may
affect the toxicity of solutions. Prep solutions
have been reported to injure the skin when
allowed to remain between patients and water
circulating heating blankets during prolonged
procedures.3
• Place a dry absorbent sheet between the
patient and the blanket when using all-vinyl
blankets.
Moisture may accumulate which may result
in skin damage.
A dry absorbent sheet placed between the
patient and the Hyper/Hypothermia Blanket
will provide a sanitary barrier and absorb
perspiration. It will also promote more uniform
distribution of heat. Vinyl blankets with
nonwoven fabric surfaces do not require an
absorbent sheet when using the nonwoven
side.
REFERENCES
1 Gendron, F. G. Unexplained Patient Burns.
Chap. 5, p. 87, Quest Publishing Co., 1988.
2 Scott, Stewart M. Thermal Blanket Injury in
the Operating Room. Arch. Surg., Vol. 94, p.
181, Feb. 1967; Crino, Marjanne H. Thermal
Burns Caused by Warming Blankets in the
Operating Room. Clinical Workshop, Vol.
29, pp. 149‑150, Jan‑Feb 1980; Gendron,
Francis G. Journal of Clinical Engineering.
Vol. 5, No. 1, pp. 19-26, January-March
1980; Moritz, A.R. and Henriques, Jr.,
"F.C. Studies of Thermal Injury II." In The
Relative Importance of Time and Surface
Temperature in the Causation of Cutaneous
Burns. Am. J. Path., 23:695, 1947; Stoll,
Alice M. and Chianta, Maria A. Method and
Rating System for Evaluation of Thermal
Protection. Aerospace Medicine, Vol. 40,
No. 11, pp. 1232‑1238, Nov. 1969; Stewart,
T. P. and Magnano, S. Burns or Pressure
Ulcers in the Surgical Patient. Decubitus,
Vol. 1, pp. 36-40, 1988.
3 Llorens, Alfred S. Reaction to Povidone-
Iodine Surgical Scrub, Scrub Associated with
Radical Pelvic Operation. Am. J. Obstet.
Gynecol., pp. 834‑835, Nov. 14, 1974;
Hodgkinson, Darryl J., Irons, George B. and
Williams, Tiffany J. Chemical Burns and Skin
Preparation Solutions. Surgery, Gynecology
& Obstetrics, Vol. 17, pp. 534-536, Oct.
1978.
Patient Safety
15
CAUTION
CAUTION
WARNING
RE
TURNRE
TURN
SU
PP
LYSU
PPL
Y
RE
TUR N RETUR N
S UPPLY S UPPL
Y
Supply
Return

Medi-Therm®IIIMedi-Therm®III Start-up Procedure / Shutdown Procedure
SILENCE ALARM button will temporarily
silence the audible alarm for 5 minutes if a
CHECK WATER FLOW condition exists.
5.7 Perform Indicator Light Test
Since machine indicators are essential to proper
machine operation, you should test the indicator
lights each time the machine is placed in operation.
Perform this test by pressing and holding the TEST
LIGHTS button.
While holding the TEST LIGHTS button down, verify
the following occurs:
•the right and left halves of the display panel
light alternately;
•the four status legends (FLOW-OK, HEAT,
IN-TEMP, and COOL) light;
•the ALERT legend and its four (triangular)
indicators light;
•the three mode legends, SELECT heading,
and three AUTO/CONTROL OPTION
legends light;
•the three temperature displays (BLANKET,
PATIENT, and SET POINT) indicate 888,
888.8, and 888.8, respectively;
•the two temperature control legends (°C
and °F)* and the two lines connecting SET
POINT to both the BLANKET and PATIENT
display light;
•the audible alarm sounds.
If any indicator does not light, or the alarm does
not sound, remove the machine from use.
This completes the start-up procedures for the
Medi-Therm III machine. Please proceed to sections
7.0 through 7.3 for the operating instructions for
MANUAL, AUTO and MONITOR modes.
6.0 Shutdown Procedure
When therapy is completed, turn off the Medi-Therm
III machine. Close pinch clamps before disconnecting
the blanket.
*Some models do not have the °C/°Ffeature.
7
5.5 Connect Power/Turn Machine On
If the machine is not already plugged in, insert the
power cord plug into a properly grounded AC receptacle
at this time. Press the ON/OFF Switch to the ON
position.
When rst turned on, the Medi‑Therm III enters its
standby mode:
•the ON/OFF switch will light;
• the machine will beep once;
•the SELECT heading will light;
•the BLANKET, PATIENT, and SET POINT
temperature displays will show dashes; and
•the °C or °F indicator will light, depending on
the scale last selected.*
NOTE: If the ADD WATER indicator lights, add distilled
water until the green band on the oat is visible.
5.6 Check Water Flow Alert
Audible Alarm Preference
The operator can choose whether to have an audible
alarm accompany a CHECK WATER FLOW alert visual
indication (in the event the blanket water ow becomes
restricted). As set from the factory, the visual alert
condition is not accompanied by an audible alarm.
To change the audible preference to ON:
1. Turn the machine off.
2. Press and hold the SILENCE ALARM button.
3. Turn the machine on while continuing to
depress the SILENCE ALARM button for at
least one second.
4. To check audible operation, press the
MANUAL mode button. Bend the blanket
hose (to restrict water ow) until the CHECK
WATER FLOW and ALERT indicators light.
The audible alarm should sound.
The new preference (i.e., audible alarm ON) will be
remembered by the machine even when power is off.
To change the audible preference to OFF again, repeat
steps 1-3 and insure non-operation of the audible tone
using step 4 above.
NOTE: If the audible preference is ON, pressing the
Patient Safety
14
Use the Medi-Therm III Hyper/Hypothermia machine
only under the direction of a physician.
Review the following precautions and procedures
prior to each application:
Do not use the Medi-Therm III machine in the
presence of ammable anesthetics.
Risk of explosion can result.
• If the patient’s temperature is not responding
or does not reach the prescribed temperature
in the prescribed time or deviates from the
prescribed temperature range, notify the
attending physician promptly.
Failure to notify the physician promptly
may result in serious injury or death.
• Power interruption will cause the Medi-
Therm III machine to go into a standby mode,
resulting in no therapy to the patient. Follow
instructions for desired mode to resume
operation.
Failure to resume therapy could result in
serious injury or death.
• The Medi-Therm III machine is provided
with a means of checking rectal/esophageal
temperature probes. When performing the
PROBE CHECK
(p. 18, 10.1.2, item 4), use a disposable
protective sheath on the probe.
Failure to use a sheath could result in
cross-contamination.
• PEDIATRICS - The temperatures of infants
and children are more responsive to surface
heating and cooling than adults. The smaller
the patient, the more pronounced the effect
because of their higher ratio of skin contact
area to body mass.
TEMPERATURE-SENSITIVE PATIENTS
- Patients with impaired peripheral blood
circulation caused by vascular diseases
and patients who are incapacitated may
be more sensitive to temperature changes
than patients with more normal circulation.
OPERATING ROOM PATIENTS - Patients
with poor circulation associated with
inadequate heart function, reduction in
blood volume, and constriction of peripheral
blood vessels may deviate from the normal
response to the external application of heat
and cold.
• Avoid placing additional heat sources
between the patient and blanket.
Skin damage can result.
Heat applied by the blanket can result in
a rise in skin temperature at the areas
of contact. The additional heat rise due
to electrosurgical currents owing to the
dispersive electrode could be sufcient to
cause tissue injury. Each thermal effect
by itself may be completely safe, but the
additive effect may be injurious.1Keep
additional heat sources from between
the patient and the blanket.
• Prevent excessive and/or prolonged tissue
pressure and shearing forces, especially over
boney prominences.
Skin damage may result.
Localized skin injury due to tissue
compressed between boney prominences
and uid lled channels has occurred
during prolonged cardiovascular
procedures at blanket temperatures
well below the scientically established
epidermal burn injury threshold.2
8.0 Patient Safety
(continued next column)
(continued next page)
DANGER
WARNING
WARNING

Medi-Therm®IIIMedi-Therm®III
the selected SET POINT. A temperature sensor within the
machine monitors water temperature, and the machine heats
or cools the blanket water as required to bring it to the SET
POINT temperature.
In MANUAL mode, the operator must observe the patient’s
temperature and manually adjust the blanket temperature to
obtain the desired results.
To operate in MANUAL mode:
Perform all start-up procedures (pp. 5-7).
Press the MANUAL mode button. The upper window
on the MANUAL button will light.
The BLANKET display will indicate blanket water
temperature. The SET POINT display will indicate
the default temperature (32°C [89.6°F]) at start-up,
until selecting the SET POINT temperature in step 4
below.
If desired, change the temperature scale by pressing
the °C/°F button.*
Adjust the SET POINT display to the prescribed
blanket temperature setting by pressing the “∇” or “∆”
button to decrease or increase the SET POINT.
The STATUS display will indicate HEAT or COOL while the
machine is heating or cooling the blanket water. When the
blanket temperature stabilizes (within 1°C [1.8°F] of the
SET POINT temperature), the IN-TEMP indicator will light
indicating that the desired blanket water temperature is being
maintained.
NOTE: When the Medi-Therm III machine is turned on, the
machine set point defaults to 32°C (89.6°F) when
MANUAL mode is selected, or 37°C (98.6°F) when
AUTO mode is selected.
Once a SET POINT temperature for a mode has been
selected, it is retained for that mode until the SET
POINT temperature is changed or the machine has
been turned off. The SET POINT temperature in one
mode does not affect the SET POINT temperature
in another mode.
*Some models do not have the °C/°Ffeature.



8

7.0 Modes of Operation
Read and understand the contents of these Operating
Instructions and associated precautions before using the
Medi-Therm III machine. Any application of the Hyper/
Hypothermia System must be under the direction of the
attending physician.
• If the patient's temperature is not responding or
does not reach the prescribed temperature in the
prescribed time or deviates from the prescribed
temperature range, notify the attending physician
promptly.
Failure to notify the physician promptly may
result in serious injury or death.
• Power interruption will cause the Medi-Therm III
machine to go into a standby mode (see item 5.5,
p. 7), resulting in no therapy to the patient. Follow
instructions for desired mode to resume operation.
Failure to resume therapy could result in
serious injury or death.
The Medi-Therm III machine is designed to operate in
three (3) modes:
• MANUAL (blanket temperature control),
• AUTO (automatic patient temperature control), and
• MONITOR (patient temperature monitoring).
Some applications may require a second blanket in order
to achieve additional or more rapid heating or cooling.
For these situations, a second blanket may be connected
to the machine. The rate of patient heating or cooling
may also be increased by positioning half- and full-size
blankets so that greater body surface is in contact with the
blankets.
NOTE: When connecting a second blanket to the
Medi-Therm III machine, check the water level
(see Start-up Procedure, pp. 5-7) prior to
connecting the additional blanket.
Modes of Operation / Manual Mode
7.1 Manual Mode
(To Control Blanket Temperature)
When operating in the MANUAL mode, the Medi-Therm III
machine regulates the BLANKET water temperature to
13
Modes of Operation / Monitor Mode
REMEMBER . . . in MONITOR mode, no
therapy is provided.
WARNING

Medi-Therm®IIIMedi-Therm®III Modes of Operation / Manual Mode
Figure 8—Manual Mode

9
NOTE: While operating in the MANUAL mode, the
patient probe may be used to monitor the
patient’s temperature.
To use this Medi-Therm III feature, insert sensing
end of patient probe into patient and tape
securely to prevent accidental dislodgment.
Insert plug end of patient probe into PATIENT
PROBE jack. Make sure probe plug is fully
seated. The MANUAL mode switch must be
pressed.
Use YSI 400 Series Probes or equivalent.
If in doubt that the correct probe is being used
and is operating properly, perform a PROBE
CHECK test (p. 18, 10.1.2, item 4).
Patient temperature will be indicated on the
PATIENT temperature display.
If the patient probe senses an abnormal
patient temperature (below 29°C [84.2°F] or
above 45°C [113°F]), the CHECK PATIENT
PROBE alert will light and an audible alarm
will sound. This condition may indicate the
patient probe has become dislodged, an
incorrect probe is being used, or the probe
has become defective (see Alerts, pp. 18-19).



7.3 Monitor Mode
(Patient Temperature Monitoring,
No Therapy)
Press MONITOR mode when no patient temperature
therapy is required, but monitoring of patient
temperature is desired.
To operate in MONITOR mode:
Perform steps 5.4, 5.5, and 5.6 of the Start-
up Procedure (pp. 6-7).
Insert sensing end of patient probe into
patient and tape securely to prevent
accidental dislodgment.
Insert plug end of patient probe into the
PATIENT PROBE jack.
Make sure probe plug is fully seated.
Use YSI 400 Series Probes or equivalent.
If in doubt that the correct probe is being
used and is operating properly, perform a
PROBE CHECK test (p. 18, 10.1.2, item 4).
Modes of Operation / Monitor Mode
Figure 10—Monitor Mode
Press the MONITOR mode button. The upper
window on the MONITOR button will light. The
patient’s temperature will be displayed.
If desired, change the temperature scale by
pressing the °C/°F button.*
NOTE: If the patient probe senses an
abnormal patient temperature (below
29°C [84.2°F] or above 45°C [113°F]),
the CHECK PATIENT PROBE alert will
light and sound an audible alarm.
This condition may indicate the
patient probe has become dislodged,
an incorrect probe is being used, or a
probe has become defective (see
Alerts, pp. 18-19).





12



*Some models do not have the °C/°Ffeature.

Medi-Therm®IIIMedi-Therm®III
Figure 9—Automatic Mode
Modes of Operation / Automatic Mode
7.2 Automatic Mode
(To Control Patient Temperature)
When operating in the AUTO mode, the Medi-Therm III
automatically regulates the patient’s temperature to the
selected SET POINT. The machine constantly compares
actual patient temperature with the SET POINT value, and
automatically adjusts the BLANKET water temperature so
that the desired patient temperature is achieved.
To operate in AUTO mode:
Perform all start-up procedures (pp. 5-7).
Insert sensing end of patient probe into patient
and tape securely to prevent accidental
dislodgment.
Insert plug end of patient probe into PATIENT
PROBE jack.
NOTE: Make sure probe plug is fully seated.
Use YSI 400 series probes or
equivalent. If in doubt that the correct
probe is being used and is operating
properly, perform a PROBE CHECK test
(p. 18, 10.1.2, item 4).




Press the AUTO mode button. The upper
window on the AUTO button will light. The
CONTROL OPTION/RAPID will light.
NOTE: To prevent accidental triggering of
the CHECK PATIENT PROBE alert,
place probe in patient and wait ve
(5) minutes before pressing AUTO
mode button.
The BLANKET display will indicate blanket
water temperature. The PATIENT display
will indicate patient temperature. The SET
POINT temperature will indicate the default
temperature (37°C [98.6°F]) at start-up, until
selecting the SET POINT temperature in
step 6 (p. 11).
If desired, change the temperature scale by
pressing the °C/°F button.*
10






*Some models do not have the °C/°Ffeature.
Modes of Operation / Automatic Mode
Adjust the SET POINT display to the prescribed
patient temperature setting by pressing the “∇”
or “∆” button to decrease or increase the SET
POINT.
NOTE: When the Medi-Therm III machine is turned
on, the machine set point defaults to 32°C
(89.6°F) when MANUAL mode is selected or
37°C (98.6°F) when AUTO mode is selected.
Once a SET POINT temperature for a mode
has been selected, it is retained for that mode
until the SET POINT temperature is changed
or the machine has been turned off. The SET
POINT temperature in one mode does
not affect the SET POINT temperature in
another mode.
The unit will heat or cool as required to bring the
patient temperature to the SET POINT. The rate
of cooling is user adjustable through the use of
the CONTROL OPTION. The rate of heating is not
adjustable. The unit applies heat at a maximum rate
with the maximum water temperature limited to 42°C
(107.7°F) regardless of the CONTROL OPTION
selected.
The CONTROL OPTION defaults to RAPID when
AUTO mode is entered. Select a different CONTROL
OPTION by pressing the AUTO button again.
Rapid—the coldest water is used for cooling–as
low as 4°C (39°F). This may not be the most
comfortable setting for the patient.
Moderate—cooling water temperature is
limited to 15°C (27°F) below PATIENT
TEMPERATURE. This will provide an
improved comfort setting to the patient.
Gradual—cooling water temperature is limited to
10°C (18°F) below PATIENT TEMPERATURE.
This will provide the maximum comfort to the
patient.

11

•If the patient probe senses an abnormal
patient temperature (below 29°C [84.2°F]
or above 45°C [113°F]), therapy will stop,
the CHECK PATIENT PROBE alert will
light and an audible alarm will sound.
This condition may indicate the
patient probe has become dislodged,
an incorrect probe is being used, or
the probe has become defective (see
Alerts, pp. 18-19).
NOTE: The PATIENT temperature display will
ash when the patient’s temperature
is more than 1°C (1.8°F) from the SET
POINT temperature. Such ashing
occurs only in the AUTO mode.

WARNING