Aspect Medical Systems, Inc. Aspect Medical Systems International B.V.
One Upland Road Rijnzathe 7d2
Norwood, MA 02062 3454 PV De Meern
U.S.A. The Netherlands 0123
(Tel) 617-559-7000 Tel: +31.30.662.9140
(Tel) 888-BIS INDE(X) (U.S. only) Fax: +31.30.662.9150
(Fax) 617-559-7400 amsint@aspectms.com
bis_info@aspectms.com
www.aspectmedical.com
070-0069 3.00
BIS VISTA is a trademark of Aspect Medical Systems, Inc.
Aspect, Bispectral Index, BIS, the BIS logo, BISx, the BISx logo and Zipprep are trademarks
of Aspect Medical Systems, Inc. and are registered in the U.S.A., E.U. and other countries.
TABLE OF CONTENTS
ABOUT THIS MANUAL........................................................................................ i
INTRODUCING THE BIS VISTA MONITORING SYSTEM............................ ii
2.3 The BIS VISTA Monitoring System – Equipment and Supplies ............................. 2-6
2.3.1 BIS VISTA Monitor .................................................................................................................................. 2-7
2.3.1.1 Front Panel...................................................................................................................................... 2-7
2.3.1.5 Integral Battery .............................................................................................................................. 2-9
2.3.4 BIS Sensors .............................................................................................................................................. 2-11
2.5.1 Starting the Monitor for the First Time ............................................................................................ 2-12
2.5.2 Starting the Monitor from Standby Mode......................................................................................... 2-12
2.6 Initial Menu Settings.................................................................................................. 2-12
2.6.1 Language Selection ................................................................................................................................. 2-13
2.6.2 Date and Time ........................................................................................................................................ 2-13
3.3 BIS Trend Data Screen ............................................................................................... 3-6
3.3.1 BIS (Bispectral Index) Value ................................................................................................................... 3-6
3.3.2 Signal Quality Indicator ........................................................................................................................... 3-6
3.3.5 Message Region ........................................................................................................................................ 3-7
3.3.6 BIS Trend Graph ...................................................................................................................................... 3-8
3.3.7 Additional Screen Information .............................................................................................................. 3-9
3.3.7.2 USB Export Icon............................................................................................................................ 3-9
3.4.2 Menu, Home, Sensor Check and Review Touch Keys................................................................... 3-12
3.5 Menu Selections ......................................................................................................... 3-13
3.5.1 Target Range ........................................................................................................................................... 3-13
3.5.11 Export Data ....................................................................................................................................... 3-22
3.5.12 BIS Smoothing Rate.......................................................................................................................... 3-24
3.5.16 Date and Time................................................................................................................................... 3-27
3.5.17 Language ............................................................................................................................................. 3-28
3.5.21 Demo Case ........................................................................................................................................ 3-30
3.5.22 Diagnostic Menu ............................................................................................................................... 3-30
3.6 Reviewing and Printing Stored Trend Data............................................................ 3-31
3.8 Ending a Case ............................................................................................................. 3-34
3.9 Data Transfer ............................................................................................................. 3-35
3.10 How the BIS VISTA Monitoring System Works.................................................... 3-36
3.10.1 Bispectral Index (BIS).......................................................................................................................3-37
3.10.3 System Self-Checks........................................................................................................................... 3-37
3.10.4 Monitor Data Memory ....................................................................................................................3-38
3.10.5 BISx Data Memory ........................................................................................................................... 3-38
5.2.3 System Checkout ..................................................................................................................................... 5-3
5.2.4 Checking the Battery............................................................................................................................... 5-4
5.2.5 Replacing the Battery .............................................................................................................................. 5-4
5.2.6 Replacing the Power Supply................................................................................................................... 5-5
6.1.1 Display BISx Connection History ......................................................................................................... 6-1
6.1.2 Serial Protocol .......................................................................................................................................... 6-1
Figure 38 - BIS VISTA Menu Map ............................................................................................... 7-1
ABOUT THIS MANUAL
This Operating Manual contains all of the information you need to set up and operate the
Aspect Medical Systems BIS VISTA™ Monitoring System. It also includes specific cleaning
and test procedures you may occasionally be required to perform. Although this manual is
intended for trained medical personnel, it does not assume prior knowledge or experience
with operator-programmable medical electronics devices.
Keep this Operating Manual with the BIS VISTA monitor for use by the operator. This
manual is also intended to be a service information manual for service technicians or
biomedical engineering personnel.
Before attempting to set up or use the BIS VISTA system, please familiarize yourself
with the safety information provided in this section.
i
INTRODUCING THE BIS VISTA MONITORING SYSTEM
Introduction
The BIS VISTA Monitoring System is a user-configurable patient monitoring system
designed to monitor the hypnotic state of the brain based on acquisition and processing of
EEG signals. The BIS VISTA system processes raw EEG signals to produce a single
number, called the Bispectral Index™, or BIS, which correlates with the patient's level of
hypnosis.
The BIS VISTA monitor display consists of:
• The current BIS number
• Trend graphs of processed EEG parameters
• Raw EEG waveforms in real time
• Various signal quality indicators (EMG, SQI)
• Suppression Ratio (if requested by the user)
• Burst Count number (when a BIS Extend Sensor is in use)
• Alarm Indicator and Messages
The system performs self-tests to ensure that the monitor and its components are
functioning properly and that impedance levels of patient sensors are within acceptable
limits. Touch screen menus allow the user to change the data display and review stored data.
ii
Important Information about Using BIS Monitoring
The BIS EEG VISTA Monitor System is intended for use under the direct supervision of a
licensed healthcare practitioner or by personnel trained in its proper use. The system, and all
its associated parameters, is intended for use on adult and pediatric patients within a hospital
or medical facility providing patient care to monitor the state of the brain by data acquisition
of EEG signals.
The BIS Index, one of the VISTA Monitor output parameters, may be used as an aid
in monitoring the effects of certain anesthetic agents; and its usage with certain
anesthetic agents may be associated with a reduction in primary anesthetic use and a
reduction in emergence and recovery time.
Use of the BIS Index for monitoring to help guide anesthetic administration may be
associated with the reduction of incidence of awareness with recall in adults during general
anesthesia and sedation.
BIS is a complex monitoring technology intended for use as an adjunct to clinical judgment
and training. Clinical judgment should always be used when interpreting BIS in conjunction
with other available clinical signs. Reliance on BIS alone for intraoperative anesthetic management is not recommended. As with any monitored parameter, artifacts and poor
signal quality may lead to inappropriate BIS values. Potential artifacts may be caused by poor
skin contact (high impedance), muscle activity or rigidity, head and body motion, sustained
eye movements, improper sensor placement and unusual or excessive electrical interference.
BIS values should also be interpreted cautiously with certain anesthetic combinations, such
as those relying primarily on either ketamine or nitrous oxide/narcotics to produce
unconsciousness. Due to limited clinical experience in the following applications, BIS values
should be interpreted cautiously in patients with known neurological disorders and those
taking other psychoactive medications.
The BIS education site, www.biseducation.com, offers relevant information and published
articles on the clinical use of BIS. In addition, there is a “Monitoring Consciousness Using
the Bispectral Index during Anesthesia” Clinician’s Pocket Guide available on the website
and through your local Aspect Representative.
For more information, please contact Aspect Medical Systems at (800) 442-2051. If you
require additional information on the use of BIS, please contact Aspect Medical Systems
Clinical Support at 800-442-8655 or 617-559-7655 if calling from outside of the USA.
Caution:
Carefully read this entire manual before using the monitor in a clinical
setting.
WARNINGS, CAUTIONS, AND NOTES
The terms warning, caution, and note have specific meanings in this manual.
• A WARNING advises against certain actions or situations that could result in
personal injury or death.
• A CAUTION advises against actions or situations that could damage equipment,
produce inaccurate data, or invalidate a procedure, although personal injury is
unlikely.
• A NOTE provides useful information regarding a function or procedure.
KEY TO SYMBOLS
A key to the symbols that may appear on the BIS VISTA system appears at the end of this
section.
1.1 Warnings
EXPLOSION HAZARD: DO NOT USE THE BIS VISTA SYSTEM IN A
FLAMMABLE ATMOSPHERE OR WHERE CONCENTRATIONS OF
FLAMMABLE ANESTHETICS MAY OCCUR.
MONITOR IS NOT DESIGNED FOR USE IN MRI ENVIRONMENT.
USE ONLY THE POWER CORD SUPPLIED BY THE MANUFACTURER.
NEVER ADAPT THE PLUG FROM THE MONITOR TO FIT A NONSTANDARD OUTLET.
U.S.A. REQUIREMENT: FOR PROPER GROUNDING, THE POWER
RECEPTACLE MUST BE A THREE-WIRE GROUNDED OUTLET. A
HOSPITAL GRADE OUTLET IS REQUIRED. NEVER ADAPT THE THREEPRONG PLUG FROM THE MONITOR TO FIT A TWO-SLOT OUTLET. IF
THE OUTLET HAS ONLY TWO SLOTS, MAKE SURE THAT IT IS
REPLACED WITH A THREE-SLOT GROUNDED OUTLET BEFORE
ATTEMPTING TO OPERATE THE MONITOR.
IF THE INTEGRITY OF THE EXTERNAL PROTECTIVE EARTH GROUND
IS IN DOUBT, THE BIS VISTA SYSTEM SHALL BE OPERATED FROM ITS
INTERNAL BATTERY POWER SOURCE ONLY.
BE SURE THE MONITOR IS MOUNTED SECURELY IN PLACE TO AVOID
PERSONAL OR PATIENT INJURY.
WHEN CONNECTING EXTERNAL EQUIPMENT (e.g., DATA CAPTURE
COMPUTER), THE SYSTEM LEAKAGE CURRENT MUST BE CHECKED
AND MUST BE LESS THAN THE IEC 60601-1-1 LIMIT.
THE USE OF ACCESSORY EQUIPMENT NOT COMPLYING WITH THE
EQUIVALENT SAFETY REQUIREMENTS OF THIS EQUIPMENT MAY
LEAD TO A REDUCED LEVEL OF SAFETY OF THE RESULTING SYSTEM.
CONSIDERATION RELATING TO THE CHOICE SHALL INCLUDE:
• USE OF THE ACCESSORY IN THE PATIENT VICINITY
• EVIDENCE THAT THE SAFETY CERTIFICATION OF THE
ACCESSORY HAS BEEN PERFORMED IN ACCORDANCE TO THE
APPROPRIATE IEC 60601-1 AND/OR IEC 60601-1-1 HARMONIZED
NATIONAL STANDARD.
DUE TO ELEVATED SURFACE TEMPERATURE, DO NOT PLACE BISx™ IN
PROLONGED DIRECT CONTACT WITH PATIENT’S SKIN, AS IT MAY
CAUSE DISCOMFORT.
THE CONDUCTIVE PARTS OF ELECTRODES OR SENSOR AND
CONNECTORS SHOULD NOT CONTACT OTHER CONDUCTIVE PARTS,
INCLUDING EARTH.
TO REDUCE THE HAZARD OF BURNS DURING USE OF HIGHFREQUENCY SURGICAL EQUIPMENT, THE SENSOR OR ELECTRODES
SHOULD NOT BE LOCATED BETWEEN THE SURGICAL SITE AND THE
ELECTRO-SURGICAL UNIT RETURN ELECTRODE.
TO REDUCE THE HAZARD OF BURNS DURING USE OF BRAINSTIMULATING DEVICES (e.g., TRANSCRANIAL ELECTRICAL MOTOR
EVOKED POTENTIAL), PLACE STIMULATING ELECTRODES AS FAR AS
POSSIBLE FROM THE BIS SENSOR AND MAKE CERTAIN THAT SENSOR IS
PLACED ACCORDING TO PACKAGE INSTRUCTIONS.
THE SENSOR MUST NOT BE LOCATED BETWEEN DEFIBRILLATOR
PADS WHEN A DEFIBRILLATOR IS USED ON A PATIENT CONNECTED
TO THE BIS VISTA SYSTEM.
TO MINIMIZE THE RISK OF PATIENT STRANGULATION, THE PATIENT
INTERFACE CABLE (PIC) MUST BE CAREFULLY PLACED AND SECURED.
SHOCK HAZARD: DO NOT ATTEMPT TO DISCONNECT THE POWER
CORD WITH WET HANDS. MAKE CERTAIN THAT YOUR HANDS ARE
CLEAN AND DRY BEFORE TOUCHING THE POWER CORD.
UNIVERSAL PRECAUTIONS SHALL BE OBSERVED TO PREVENT
CONTACT WITH BLOOD OR OTHER POTENTIALLY INFECTIOUS
MATERIALS. PLACE CONTAMINATED MATERIALS IN REGULATED
WASTE CONTAINER.
DO NOT MIX DISINFECTING SOLUTIONS (e.g., BLEACH AND AMMONIA),
AS HAZARDOUS GASES MAY RESULT.
ELECTRICAL SHOCK HAZARD: DO NOT REMOVE MONITOR COVERS
DURING OPERATION OR WHILE POWER IS CONNECTED TO MONITOR.
ELECTRICAL SHOCK HAZARD: THE MANUFACTURER'S INSPECTION OF
THIS APPARATUS VERIFIED THAT THE GROUND LEAKAGE CURRENT
AND THE PATIENT SAFETY CURRENT WERE LESS THAN THE
SPECIFIED LIMITS ESTABLISHED BY THE APPLICABLE SAFETY
STANDARDS. AS A MATTER OF SAFE PRACTICE, THE INSTITUTION
SHOULD CONDUCT PERIODIC TESTS TO VERIFY THESE CURRENTS.
WHENEVER AN EVENT SUCH AS SPILLAGE OF BLOOD OR SOLUTIONS
OCCURS, RE-TEST GROUND LEAKAGE CURRENT BEFORE FURTHER
USE.
LEAKAGE CURRENT MUST BE CHECKED BY A QUALIFIED BIOMEDICAL
ENGINEERING TECHNICIAN WHENEVER INSTRUMENT CASE IS
OPENED.
POWER SUPPLY IS INTERNALLY FUSED. REPLACE POWER SUPPLY
ONLY WITH ASPECT MEDICAL SYSTEMS BIS VISTA POWER SUPPLY.
1.2 Cautions
Read this entire manual carefully before using the monitor in a clinical setting.
Do not autoclave the BISx or Monitor. Autoclaving will seriously damage both
components.
Do not block ventilation inlet holes on the underside of monitor.
Do not open BISx for any reason. The seal to prevent liquids from entering the BISx
may be damaged if opened.
Service or repairs must be performed only by qualified biomedical technicians.
The BIS VISTA system has been designed to operate with a BIS sensor. The sensor
is a silver/silver chloride electrode array that utilizes Aspect's patented Zipprep™
technology and uses a proprietary connector. Use of other electrodes is not
recommended.
To completely remove power from the unit: put the monitor in Standby mode,
disconnect power cord from the power receptacle of the monitor, then remove the
battery from the monitor.
Continuous impedance checking may need to be disabled if the 1 nanoampere 128
Hz impedance check signal interferes with other equipment (e.g., evoked potential
monitors).
Considerations when using Electro-Convulsive Therapy (ECT) equipment during
BIS monitoring: Place ECT electrodes as far as possible from the BIS sensor to
minimize the effect of interference. Certain ECT equipment may interfere with the
proper function of the BIS monitoring system. Check for compatibility of equipment
during patient setup.
Check the battery periodically by operating a BIS VISTA monitor that has been
disconnected from the wall socket and that has been charged to full capacity (at least
6 hours of charge time). After long periods of storage, charge the battery for 6 hours
to assure full capacity. If the BIS VISTA monitor fails to operate reliably from the
battery for approximately 45 minutes, battery replacement is required.
The BIS VISTA monitor contains an internal Lithium ion battery. The battery must
be removed by a qualified service technician and disposed of or recycled in
accordance with the national laws of the country. Contact Aspect Medical Systems,
Inc. or the local distributor for a replacement battery: Aspect part number 186-0208.
Avoid liquid ingress to the Patient Interface Cable. Contact of fluids with the PIC
sensor connector can interfere with PIC performance.
Service or repairs must be performed only by qualified biomedical technicians.
The BIS VISTA system complies with the electromagnetic compatibility
requirements of IEC 60601-1-2. Operation of this device may affect or be affected by
other equipment in the vicinity due to electromagnetic interference (EMI). If this
occurs:
• Increase separation between devices
• Re-orient device cabling
• Plug devices into separate outlet circuit branches
Refer to Section 8.2 “Electromagnetic Compatibility Specifications”.
Do not disconnect the BISx during the software update.
When connecting or disconnecting BISx, take care not to touch the exposed contacts
of either connector. Damage due to electrostatic discharge may result.
Using accessories other than those specified may result in increased electromagnetic
emissions or decreased electromagnetic immunity of the BIS VISTA Monitoring
System.
The BIS VISTA Monitor should not be used adjacent to or stacked with other
equipment. If adjacent or stacked use is necessary, the BIS VISTA Monitor should
be observed to verify normal operation in the configuration in which it will be used.
Important:
The BIS VISTA systems comply with the European Medical Device Directive
(MDD) and applicable regulatory requirements of the country distributed to and
carry the CE
Marking. Declarations of Conformity provided upon request where
Product marked with a
number contains certain
toxic or hazardous
substances or elements, and
can be used safely during its
Environment-Friendly Use
Period (EFUP). The
product should be recycled.
The Environment-Friendly
Use Period is valid only
when the product is
operated under the
conditions defined in the
product manual. **
*Contact Aspect Medical Systems International B.V. for a Return Materials Authorization
(RMA) number. According to the WEEE Directive 2002/96/EC, all waste electrical and
electronic equipment (EEE) should be disposed of and collected separately and treated
according to the best available and environmentally friendly techniques.
EEE contains hazardous substances to the (human) environment but also EEE is a valuable
resource of new raw materials. Therefore it is important to collect WEEE separately from
other waste.
Aspect Medical products are subject to the Directive and we therefore urge you to dispose of the equipment
separately and make sure that it is treated at an electronics recycler. Please contact your municipality or the
nearest collection site and dispose of waste equipment there and make sure the discarded equipment does not
end-up in the ‘normal’ household waste.
** Refer to www.aspectmedical.com for Material Declaration Data Sheets.
Figure 1 - Symbol Key (Page 2 of 3)
separate treatment from general
waste at end of life *
Product marked with the “e”
does not contain any toxic or
hazardous substances or
elements, and is green and
environmental. The product can
be recycled. **
• Verify battery icon is not displayed below BIS banner.
• Verify “OPERATING ON BATTERY BACKUP” is not displayed.
8. End of install.
2.2 Environment
2.2.1 Shipping and Storage Environment
The monitor and its accessories can be stored or shipped within the following environmental
limits. Note that these limits apply to non-operational storage and shipping situations.
Temperature -10°C to +60°C
Humidity 15% to 95% (non-condensing)
Pressure 800 mm Hg (1500 feet below sea level) to 360mm Hg (20,000 feet
above sea level)
Protect the monitor from sudden temperature changes that can lead to condensation within
the instrument. To minimize condensation, avoid moving the system between heated
buildings and outside storage. Once moved inside, allow the monitor to stabilize in the
unopened shipping container at the inside ambient temperature before unpacking and
placing into service. Before operation, wipe down all visible condensation and allow the
system to reach equilibrium at room temperature.
2.2.2 Operating Environment
The BIS VISTA Monitoring System is not designed for use in areas containing flammable
gases or vapors.
WARNING:
EXPLOSION HAZARD: DO NOT USE THE BIS VISTA SYSTEM
IN A FLAMMABLE ATMOSPHERE OR WHERE
CONCENTRATIONS OF FLAMMABLE ANESTHETICS MAY
OCCUR.
MONITOR IS NOT DESIGNED FOR USE IN MRI
ENVIRONMENT.
The BIS VISTA monitor is designed to operate safely under the following conditions.
Conditions outside these ranges could affect reliability.
Temperature 0°C to +40°C
Humidity 15% to 95% (non-condensing)
Pressure 800 mm Hg (1500 feet below sea level) to 360mm Hg (20,000 feet
The BIS VISTA Monitoring System requires a power source of 100-240 VAC, 50-60Hz.
Current consumption is 0.7 ampere maximum.
To protect operating personnel and patients, the monitor must be properly grounded.
Accordingly, the monitor is equipped with a hospital grade line cord. The power cord
grounds the system to the power line ground when plugged into an appropriate three-wire
receptacle.
WARNING:
USE ONLY THE POWER CORD SUPPLIED BY THE
MANUFACTURER. NEVER ADAPT THE PLUG FROM THE
MONITOR TO FIT A NON-STANDARD OUTLET.
U.S.A. REQUIREMENT: FOR PROPER GROUNDING, THE
POWER RECEPTACLE MUST BE A THREE-WIRE GROUNDED
OUTLET. A HOSPITAL GRADE OUTLET IS REQUIRED.
NEVER ADAPT THE THREE-PRONG PLUG FROM THE
MONITOR TO FIT A TWO-SLOT OUTLET. IF THE OUTLET
HAS ONLY TWO SLOTS, MAKE SURE THAT IT IS REPLACED
WITH A THREE-SLOT GROUNDED OUTLET BEFORE
ATTEMPTING TO OPERATE THE MONITOR.
IF THE INTEGRITY OF THE EXTERNAL PROTECTIVE
EARTH GROUND IS IN DOUBT, THE BIS VISTA MONITOR
SHALL BE OPERATED FROM ITS INTERNAL BATTERY
POWER SOURCE ONLY.
2.2.4 Electromagnetic Compatibility Requirements
The BIS VISTA Monitoring System should be used only with the power cord and
accessories recommended and supplied by Aspect Medical Systems, Inc. The system must be
installed and put into use according to the specifications described in Section 8.2
“Electromagnetic Compatibility Specifications.”
Caution:
The BIS VISTA system complies with the electromagnetic
compatibility requirements of IEC 60601-1-2. Operation of this device
may affect or be affected by other equipment in the vicinity due to
electromagnetic interference (EMI). If this occurs:
• Increase separation between devices
• Re-orient device cabling
• Plug devices into separate outlet circuit branches
Refer to Section 8.2 “Electromagnetic Compatibility Specifications.”
Aspect Medical Systems, Inc. strongly recommends permanent mounting of the BIS VISTA
monitor to the anesthesia machine to enhance safety and facilitate ease-of-use. Please
contact your local representative or Aspect to discuss mounting options.
WARNING:
BE SURE THE MONITOR IS MOUNTED SECURELY IN PLACE
TO AVOID PERSONAL OR PATIENT INJURY.
2.2.5.1 Mounting the Monitor using the Pole Clamp
To mount the monitor to a secure vertical pole (1/2" - 1½" in diameter):
1. Place pole within clamp bracket and tighten screw using the black finger knob. Make
sure that there is enough space above the clamp so that you have a few inches to slide
the monitor in from above.
2. Line up the clamp shoe (on back of monitor) with the slot on pole clamp and slide
monitor down to fit. The bottom of the clamp shoe should be seen well below the
bottom of the pole clamp, and the monitor should snap securely into place.
Figure 2 - Pole Clamp
To remove the monitor, press tab on top of clamp shoe before sliding monitor up.
The pole clamp may be locked onto the monitor so that the two do not get separated. To do
this:
1. Line up the clamp shoe (on back of monitor) with the slot on pole clamp and slide
monitor down to fit. The bottom of the clamp shoe should be seen well below the
bottom of the pole clamp and the monitor should snap securely into place.
2. Make sure that set screw hole on pole clamp aligns with corresponding hole on clamp
shoe.
3. Remove black knob screw from pole clamp.
4. Using the Allen wrench supplied, secure pole clamp to monitor with the set screw
provided.
5. Replace black knob screw.
6. To attach to pole, place pole within clamp bracket and tighten screw using the black
finger knob.
2.2.5.2 Optional Mounting Accessories
For information on optional mounting accessories, request Aspect’s “Monitor Mounting
Solutions” booklet (part number 070-0031).
The BIS VISTA Monitoring System consists of the following basic components:
• BIS VISTA Monitor (P/N 185-0151)
• BISx (P/N 185-0145-AMS)
• Patient Interface Cable (PIC) (P/N 186-0107)
• BIS Sensor
• Detachable Power Cord
Sensors are sold separately. For a list of available sensors please contact Aspect Medical
Systems, Inc. or your local distributor.
A pole clamp is also included; however its use is optional. Contact Aspect or your local
representative for information on additional equipment and accessories.
The front panel of the BIS VISTA monitor contains the Touch Screen, BISx port and the
ON/Standby button. See Figure 3.
2.3.1.2 Touch Screen
The BIS VISTA monitor is designed so that all controls (with the exception of the
ON/Standby button) are accessible by touching a designated area on the monitor screen.
This area is called a touch key. The touch keys are designed to function even when the user
is wearing examination gloves.
2.3.1.3 ON/Standby button
The ON/Standby button is located in the lower right corner of the monitor and indicates
whether the monitor is ON or in Standby mode. When the small LED light to the right of
the ON/Standby button is green, the unit is running and providing power to the BISx.
When it is yellow, the battery is charging and the system is in Standby mode. When it is not
lit, no A/C power is available to the unit; pressing the ON/Standby button will start up the
monitor using the battery.
2.3.1.4 Rear Panel
The rear panel components are pictured in Figure 4. They include: two USB ports (Type A
and B), the clamp shoe, an RS-232 port, the Reset button, the Battery/Power Supply cover,
and the power cord receptacle.
There are two USB ports on the rear of the monitor. The Type A port is used to export
data to a removable drive. It is also used to update monitor and BISx software.
The clamp shoe allows the monitor to slide into the pole clamp so that it can be attached
to a ½" – 1 ½" diameter vertical pole.
The RS-232 serial port can be used to transfer data from the monitor.
WARNING:
WHEN CONNECTING EXTERNAL EQUIPMENT (e.g., DATA
CAPTURE COMPUTER), THE SYSTEM LEAKAGE CURRENT
MUST BE CHECKED AND MUST BE LESS THAN THE IEC
60601-1-1 LIMIT.
THE USE OF ACCESSORY EQUIPMENT NOT COMPLYING
WITH THE EQUIVALENT SAFETY REQUIREMENTS OF THIS
EQUIPMENT MAY LEAD TO A REDUCED LEVEL OF SAFETY
OF THE RESULTING SYSTEM. CONSIDERATION RELATING
TO THE CHOICE SHALL INCLUDE:
THE ACCESSORY HAS BEEN PERFORMED IN
ACCORDANCE TO THE APPROPRIATE IEC 60601-1
AND/OR IEC 60601-1-1 HARMONIZED NATIONAL
STANDARD.
Under normal operation, power is cycled through the ON/Standby button. The Reset
button can be used to reset the software functions of the BIS monitor (and the BISx if it is
attached) in the unlikely case that it is required. See Section 6.4. “Using the Reset Button.”
The Battery/Power Supply cover contains the BIS VISTA monitor’s power supply and
allows access to its battery.
The power cord receptacle, located on the side of the Battery/Power Supply cover, is used
to plug in the power cord provided by the manufacturer. It provides power to the monitor
and to the BISx when it is attached.
Caution:
The BIS VISTA Monitoring System complies with the electromagnetic
compatibility requirements of IEC 60601-1-2. Operation of this device
may affect or be affected by other equipment in the vicinity due to
electromagnetic interference (EMI). If this occurs:
• Increase separation between devices
• Re-orient device cabling
• Plug devices into separate outlet circuit branches
Refer to Section 8.2 “Electromagnetic Compatibility Specifications”.
2.3.1.5 Integral Battery
A rechargeable lithium ion battery inside the monitor provides approximately 45 minutes of
back-up power when power cannot be supplied via the power cord. Recharge time is
approximately 6 hours. The battery charges continually as long as the unit is plugged into
A/C power.
When the system is running on battery, a battery icon displays indicating the battery status. A
battery icon with four green bars indicates that the battery is fully charged. When the battery
reaches a low power condition, the monitor beeps and the battery symbol displayed on the
screen changes color. In addition, a “Battery Voltage Low” message blinks in the Message
area of the screen.
Caution:
Check the battery periodically by operating a BIS VISTA monitor that
has been disconnected from the wall socket and that has been charged
to full capacity (at least 6 hours of charge time). After long periods of
storage, charge the battery for 6 hours to assure full capacity. If the
BIS VISTA monitor fails to operate reliably from the battery for
approximately 45 minutes, battery replacement is required.
The BIS VISTA monitor contains an internal lithium ion battery. The
battery must be removed by a qualified service technician and
disposed of or recycled in accordance with the national laws of the
country. Contact Aspect Medical Systems, Inc. or the local distributor
for a replacement battery: Aspect part number 186-0208.
2.3.2 BISx
Patient Interface Cable (PIC)
Monitor Interface Cable
Figure 5 - BISx and PIC
The BISx receives, filters, and processes patient EEG signals. It is located close to the
patient's head where the EEG signal is less subject to interference from other medical
equipment.
The BISx is shown in Figure 5. Its long flexible Monitor Interface Cable connects to the
front of the monitor. The Patient Interface Cable (PIC) connects the BIS sensor to the
BISx.
The attachment clip on the BISx is used to secure it in a convenient location near the
patient's head.
2-10
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