GE Mini Telemetry Operation And Maintenance Manual Download Page 5

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2049809-001 Rev B

Table of Contents

Appendix A: Supplies and Accessories ........................................................................41

Appendix B: Technical Specifications ..........................................................................43

B.1 Transmitter ........................................................................................................................................................... 43
B.2 Receiver ................................................................................................................................................................. 48

Appendix C: Electromagnetic Compatibility ..............................................................51

C.1 Electromagnetic compatibility (EMC) guidance................................................................................... 51
C.2 Manufacturer’s guidance and declaration regarding electromagnetic immunity ............ 51

Appendix D: Warranty ....................................................................................................55

Summary of Contents for Mini Telemetry

Page 1: ...lemetry Operation and Maintenance Manual GE Healthcare To order this manual please refer Appendix A for correct language listing Copyright 2010 by General Electric Company All rights reserved 2049809 001 Rev B ...

Page 2: ...product described at any time without notice or obligation Contact your GE Representative for the most current information Corometrics is a trade mark owned by GE Healthcare and GE monogram are trademarks of General Electric Company All other company and product names mentioned may be trademarks of the companies with which they are associated ...

Page 3: ...al Information 3 General Use 3 Responsibility of the Manufacturer 3 Equipment Safety Information 4 FCC Information USA 8 FCC Rules Compliance 8 FCC RF Exposure Compliance 8 FCC Service Information 8 Wireless Medical Telemetry Service USA 8 Industry Canada Information 9 Transmitter Antenna 9 Interference 9 Wireless Medical Telemetry Service 9 CE Marking Information Compliance 9 R TTE directive 10 C...

Page 4: ...23 Performing a Functional Checkout 24 Initial Conditions 24 Testing the Radio Frequency 24 Testing the Ultrasound Functions 25 Testing the ECG Functions 26 Testing the UA Functions 27 Testing the Event Marker Function 29 Testing the Environment 29 Monitoring via Telemetry 30 Suggestions for Ambulatory Monitoring 30 Monitoring Reminders 31 General 31 Ultrasound 32 FECG 32 Tocotransducer 32 IUPC 32...

Page 5: ...A Supplies and Accessories 41 Appendix B Technical Specifications 43 B 1 Transmitter 43 B 2 Receiver 48 Appendix C Electromagnetic Compatibility 51 C 1 Electromagnetic compatibility EMC guidance 51 C 2 Manufacturer s guidance and declaration regarding electromagnetic immunity 51 Appendix D Warranty 55 ...

Page 7: ...ed or contaminated should be replaced immediately Should such repair or replacement become necessary GE Healthcare recommends that a telephonic or written request for service advice be made to the nearest GE Healthcare Regional Service Center This Product or any of its parts should not be repaired other than in accordance with written instructions provided by GE Healthcare and by GE Healthcare tra...

Page 8: ...tially hazardous situation which if not avoided may result in minor or moderate injury Cautions are also used to avoid damage to equipment SENSITIVE TO ELECTROSTATIC DISCHARGE CAUTION An Electrostatic Discharge ESD Susceptibility symbol is displayed to alert service personnel that the part s are sensitive to electrostatic discharge and that ESD control guidelines must be followed to prevent damage...

Page 9: ...ed on the Mini Telemetry Symbol Definition Refer to instruction manual booklet Protective earth terminal Alternating current European Union representative Serial number Manufacturer Equipment shall be used only by qualified trained medical personnel Non sterile Waste of electrical and electronic equipment must not be disposed as unsorted municipal waste and must be collected separately Ground Equa...

Page 10: ...t further limiting the magnitude of possible current flow through the patient Type CF applied parts are suitable for direct cardiac application DEFIBRILLATOR PROOF TYPE BF EQUIPMENT Type BF equipment is suitable for intentional external and internal application to the patient excluding direct cardiac appliction Type BF equipment is type B equipment with an F type isolated floating part The paddles...

Page 11: ...ipment which is not suitable for a residential area e g equipment which produces radio interference when in operation Prescription Device Label for United States Unique Identification number from FCC and Industry Canada Medical Equipment With respect to electric shock fire and mechanical hazard only in accordance with UL Direct Current for products to be powered from DC supply Mark key symbol Spea...

Page 12: ...tion Named as J2 on the Receiver back panel IEC 5850 symbol To identify an output terminal when it is necessary to distinguish between inputs and outputs Named as J1 on the Receiver back panel IEC 5035 symbol Signal Strength Indicator on receiver front panel Battery Symbol on Receiver front panel ISO 0247 symbol Temperature limitations in which the transport package has to be kept and handled Humi...

Page 13: ...lectric Company All rights reserved 2049809 001 Rev B xiii About this Manual Pressure limitations in which the transport package has to be kept and handled NOTE Mini telemetry system is not made with natural rubber latex ...

Page 15: ...ltrasound doppler technology ECG FECG or MECG and uterine activity TOCO or IUPC signals individually or in combination depending on the available parameter in the fetal or maternal fetal monitor Refer to your monitor s operation manual as needed Indications for Use The Mini Telemetry system is intended to transmit fetal heart rate and uterine activity signals from an ambulatory mother to a fetal o...

Page 16: ...tors Following is the list of monitors 120 Series Transducers are interchangeable 3 170 Series Transducers are interchangeable 250 Series Transducers are interchangeable 3 250cx Series Transducers are interchangeable 3 Simultaneous monitoring of two heart rates twins when used with a monitor supporting parameters Ultrasound FHR and FECG Display to view the battery charge status audio volume status...

Page 17: ...all meet the requirements of IEC 60601 1 Disposable devices are intended for single use only They should not be reused Periodically and whenever the integrity of the equipment is in doubt test all functions as indicated under the section Chapter 4 Installation and Setup on page 19 Refer to the Maternal Fetal Monitoring Operator s Manual for information concerning the limitations of internal and ex...

Page 18: ...ections to applied parts patient connection which are likely to degrade safety WARNING CONDUCTIVE PARTS Ensure that the conductive parts of the lead electrodes and associated connectors do not contact other conductive parts including earth WARNING DEFIBRILLATION This equipment is not designed for use with defibrillators WARNING ELECTRICAL SHOCK To reduce the risk of electrical shock do not remove ...

Page 19: ...ent must be interfaced with other types of medical equipment by qualified biomedical engineering personnel Be certain to consult manufacturers specifications to maintain safe operation WARNING BATTERY Check battery low audio alarm and timely recharge the battery WARNING ACCESSORY Use GE recommended accessories power adaptor as listed in the accessory list WARNING RECEIVER PLACEMENT Receiver has to...

Page 20: ...bles and lead wires creates risk of inappropriate electrical connection which may cause patient shock or death WARNING PACEMAKER PATIENTS Rate meters may continue to count the pacemaker rate during occurrences of cardiac arrest or some arrhythmias Do not rely entirely upon rate meter alarms Keep pacemaker patients under close surveillance Refer to your monitor s operation manual for disclosure of ...

Page 21: ...racy and electrical safety of the equipment be verified on an annual basis by an Information Technologies Service Representative CAUTION DAILY INSPECTION It is essential that the equipment and accessories be inspected prior to every use CAUTION ENVIRONMENT The performance of the equipment has not been tested in certain areas such as x ray and imaging suites The equipment is not recommended for use...

Page 22: ...n of a Mini Telemetry System requires prior coordination with a frequency coordinator designated by the FCC for the Wireless Medical Telemetry Service In June 2000 the FCC allocated new spectrum and established rules for Wireless Medical Telemetry Service WMTS allowing potentially life critical equipment to operate on an interference protected basis The frequency allocation for WMTS provides spect...

Page 23: ...ni Telemetry System is only permitted for installation in hospitals and health care facilities Devices shall not be operated in mobile vehicles even ambulances and other vehicles associated with health care facilities The installer user of this device shall ensure that it is at least 80 km from the Penticton radio astronomy station British Columbia latitude 49 19 12 N longitude 118 59 56 W For med...

Page 24: ...lity Requirement and tests The safety and effectiveness of this device has been verified against previously distributed devices Although all standards applicable to presently marketed devices may not be appropriate for prior devices i e electromagnetic compatibility standards this device will not impair the safe and effective use of those previously distributed devices R TTE directive The Mini Tel...

Page 25: ...nts depending on the type and or setting of the Corometrics monitor on the strip chart paper of Corometrics monitor The event marker is commonly used to record an event This mark is available on all Corometrics brand monitors The fetal movement marker default setting is commonly used as an indication that the mother has perceived fetal movement Refer to your monitor s operator s manual to learn if...

Page 26: ... key once turns on the transmitter Pressing the key for more than 2 seconds turns off the transmitter 5 Ultrasound Input Connect a Corometrics 5700 Series pulsed Doppler ultrasound transducer to this light grey receptacle 6 ECG Input Connect an FECG cable legplate or MECG cable plug to this grey receptacle This connector is compatible with all round connector FECG MECG patient cables used with Cor...

Page 27: ...ector Connect the GE recommended power adaptor to this connector for charging the transmitter battery WARNING Always use only GE recommended power adaptor 3 Headset Connector Connect the headset to this receptacle to listen to the fetal heart rate derived from ultrasound Thetransmitterhasanoptiontowindtransducercables on the enclosure as a part of cable management 1 A groove provided on the sides ...

Page 28: ...tery Only authorized trained personal shall open the battery compartment for any service related actions CAUTION BATTERY STRENGTH The transmitter emits an audible alarm when the transmitter battery is low The onset of audio alarm indicates that unless the transmitter battery is recharged the transmitter will switch off in approximately 5 minutes If the transmitter battery is not recharged the alar...

Page 29: ...indicated 3 Mark Indicator Arrow mark is visible for an additional second after the Mark key is released 4 Channel Number Channel number of the transmitter is displayed Refer to the frequency chart in the service manual 5 Transducer Connection Status Indicates the connection status of the parametric connectors Filled circle indicates connector plugged in empty circle indicates connector not plugge...

Page 30: ...rnal power adaptor for charging Receiver Receiver Front Panel The following table describes the components of the Receiver front panel Component Description 1 Signal Indicator The green Signal indicator lights continuously when the receiver is accepting radio frequency signals from the transmitter The Signal indicator flashes if the signal strength is weak or marginal 2 UA Mode Selector This switc...

Page 31: ... have a unique channel number Receiver Rear Panel The following table describes the components of the Receiver rear panel Component Description 1 Equipotential Lug Binding post terminal which is directly connected to chassis for use as an equipotentiality connector 2 Transmitter Placeholder Placeholder provided for the transmitter 3 Antenna Connector Twist on connector for attaching the receiver a...

Page 32: ... details As soon as any telemetry mode is detected the front panel of the compatible fetal fetal maternal monitor is disabled and all front panel inputs are ignored In other words telemetry and monitor modes cannot be mixed and matched you must use either telemetry or direct monitoring only For proper operation with 120 170 250 or 250cx Series monitors disconnect all transducers from the front pan...

Page 33: ...ver and Monitor There is a single way of interconnection method between Telemetry receiver and fetal or maternal fetal monitor Check your monitor model number prior to making any connections Models 126 128 129 171 172 173 174 256 259 256cx 259cx IMPORTANT 120 SERIES COMMUNICATIONS OPTION A 120 series monitor requires a communications Board in order to interface to a Mini Telemetry system If your m...

Page 34: ...Installation Instructions part no REF 14153AA included with the bracket or contact your Biomedical Engineering Department for assistance To attach the antenna to the BNC connector on the bracket rotate the antenna attachment collar in a clockwise direction until snug Instructions to attach the Monitor Interconnect Cable to a 120 250 or 250cx Series Monitor 1 Plug one end of the interconnection cab...

Page 35: ...hat battery is connected to the circuit board SENSITIVE TO ELECTROSTATIC DISCHARGE CAUTION This procedure involves handling of ESD sensitive parts ESD control guidelines must be followed during this procedure to ensure that static charges are safely conducted to the ground and not through the sensitive device to prevent damage to the equipment Step Instructions Instructions to connect battery to c...

Page 36: ...r Step Instructions Instructions to connect the power adaptor 1 Turn off the transmitter 2 Locate the DC inlet jack and connect the DC adaptor and plug the adaptor to AC mains socket 3 Switch on the AC mains with specified AC voltage indicated in the specifications Charge the internal battery for 4hrs before using the Transmitter Check for battery charge full indication on the display IMPORTANT Po...

Page 37: ...kwise to release it from the adaptor 2 Place the desired plug attachment on the adaptor Press and hold the Release button as shown in figure 2 and rotate clockwise to attach the plug to the adaptor Attaching the Carrying Strap Perform the following steps to attach the carrying strap Step Instructions Instructions to attach the carrying strap 1 Secure the metal clips at each end of the carrying str...

Page 38: ...y Perform the following steps to test the radio frequency Step Instructions Instructions to Test the Radio Frequency 1 Check the status of the Signal indicator on the receiver Continuous Green Indicates that the receiver is accepting the radio frequency signals from the transmitter and the signal strength is good Flashing Green Indicates the signal strength is weak or marginal 2 Check the status o...

Page 39: ...ws Telemetry connected symbol will be printed on the strip chart paper Additionally Telemetry symbol will be displayed on Corometrics 120 250 and 250cx series monitor If _ _ _ is not displayed on the monitor ensure that the corresponding interconnection cable is firmly attached to both the monitor and the receiver 3 Use your finger to gently rub the ultrasound transducer surface in a rhythmic mann...

Page 40: ...head set is not connected Testing the ECG Functions Perform the following steps to test the ECG functions Step Instructions Instructions to test the ECG functions 1 Plug an ECG transducer into the ECG connector on the transmitter as shown in the figure 2 Verify the following on the monitor ECG transducer connector status indication is reflected on the transmitter display Telemetry connected symbol...

Page 41: ...time the monitor is powered on 2 Plug a tocotransducer into the transmitter s UA connector as shown in the figure Verify that UA transducer connector status indication is reflected on the transmitter display Telemetry connected symbol will be printed on the strip chart paper Additionally Telemetry symbol will be displayed on Corometrics 120 250 and 250cx series monitor An arbitrary pressure value ...

Page 42: ...g interconnection cable is firmly attached to both the monitor and the receiver NOTE Refer respective operator manual of the fetal monitor 5 This step applies to monitors which support IUP monitoring Place the receiver s UA Mode Selector switch in the IUP position Verify the following on the monitor Corometrics 120 250 250cx series monitor IUP will be displayed on the monitor as the UA mode Corome...

Page 43: ... display NOTE The settings for the mark should to be done in the monitor This annotation is commonly used to record an event This mark is available on all Corometrics brand monitors This annotation is commonly used as an indication that the mother has perceived fetal movement Refer to the operator s manual for your monitor to learn if your monitor supports this feature Refer to the service manual ...

Page 44: ... for ambulatory monitoring 1 Instruct the patient to wear the transmitter with the enclosure faced towards the receiver when possible 2 Adjust the carrying strap to a comfortable length 3 Encourage the patient to walk in a smooth gliding motion It is preferable to slide feet instead of moving quickly which may cause bouncing and artifact 4 Instruct the patient following each fetal movement to list...

Page 45: ...terconnection method according to your monitor model See page 19 Remember to apply power to all three devices monitor receiver and transmitter Check that each interconnection cable is firmly attached to both the receiver and the monitor As soon as any telemetry mode is detected the front panel of the 250 or 170 Series Monitor is disabled and all front panel inputs are ignored In other words teleme...

Page 46: ...d to use FECG during ambulation the recommended position for the legplate is on top of the upper thigh instead of the inner thigh This facilitates walking and minimizes fluid contacting the legplate Tocotransducer Remember to place the receiver s UA Mode Selector switch in the TOCO position When connecting or re connecting a Corometrics Trimline Tocotransducer to the transmitter s UA connector you...

Page 47: ...e receiver Use care while carrying the receiver and transmitter General Cleaning Precautions NOTE Refer to your monitor s operator manual for cleaning instructions for the monitor and transducers CAUTION SHOCK Unplug the fetal or maternal fetal monitor and the receiver from the AC power source and detach all accessories Do not immerse accessories in any liquid Do not use abrasive cloth or cleaners...

Page 48: ...houlder Strap Cleaning 1 Wipe any fluids from the surface of the shoulder strap 2 Dampen a soft cloth with cleaning solution and gently clean the strap 3 Wipe with cotton cloth dipped in water to remove any traces of cleaning agent 4 Dry with a soft dry cloth The following table lists approved cleaning solutions Generic Formulation Maximum concentration level Expected life of the belt Hydrogen per...

Page 49: ...ceiver Power indicator does not light when the receiver is turned on Receiver not connected to AC receptacle Connect to AC receptacle Defective AC power cord Replace AC power cord Use a different AC outlet Signal indicator flashes with transmitter turned on Transmitter antenna detached Contact your Service Representative Reattach transmitter antenna as instructed in Antenna Replacement Chapter of ...

Page 50: ...logies Service Representative Signal and or Low Battery indicators light with transmitter turned off External source of radio frequency interference is present Contact your Information Technologies Service Representative Another transmitter with the same frequency is in use within the same facility Reprogram the transmitter and or receiver to a different frequency using the procedure listed in App...

Page 51: ...y within signal range and designated areas where reception is clear Another transmitter with the same frequency is in use within the same facility Discontinue use of one of the transmitters NOTE Mini Telemetry can be re programmed to an alternative frequency Exceeding transmission range Install optional ceiling antenna system Shielding effect of hospital structure If problem persists contact your ...

Page 52: ...after consultation with a frequency coordinator designated by FCC Transmitter antenna detached Contact your Service Representative Reattach transmitter antenna as instructed in Antenna Replacement Chapter of Service Manual If problem persists contact your Information Technologies Service Representative Mini Telemetry transmitter switches off automatically Battery is low Recharge battery by connect...

Page 53: ...hnologies Service Representative Bad battery icon appears on the transmitter screen Transmitter battery pack over discharged Connect the power adaptor to the transmitter and charge for 15 minutes Disconnect the power adaptor and reconnect Switch on the transmitter and check if bad battery symbol is replaced with the battery status Disconnect the battery from the battery compartment Refer to sectio...

Page 55: ... 001 Base Plate for Mini Telemetry Wall Mount 2051641 001 Mini Telemetry Wall mount Assembly 2052779 001 Headset for Mini Telemetry System 3316AAO System Interconnect Cable 1563AAO RXR 425MHZ MINI ANTENNA 2052722 001 RXR 435 MHz MINI ANTENNA 2049802 001 RXR 445 MHz MINI ANTENNA 2049803 001 RXR 611 MHz MINI ANTENNA 2049804 001 Power cord UK 2037674 001 Power cord EU 2037672 001 Power cord US 203767...

Page 56: ...8 001 Mini Telemetry Operation manual Portuguese 2049819 001 Mini Telemetry Operation manual French 2049820 001 Quick Ref Guide English 2049966 001 Quick Ref Guide German 2049967 001 Quick Ref Guide Dutch 2049968 001 Quick Ref Guide Italian 2049969 001 Quick Ref Guide Spanish 2049970 001 Quick Ref Guide Greek 2049971 001 Quick Ref Guide Polish 2049972 001 Quick Ref Guide Russian 2049973 001 Quick ...

Page 57: ...equirements Input voltage range Line frequency Power consumption maximum During charging Mains isolation 100 240VAC 50 60Hz 15W 4000VAC 5656VDC Primary Secondary Physical Characteristics Height Width Depth Weight 1 9 4 7cm 4 7 11 9cm 4 8 12 1cm 1lb 0 45kg Environmental Conditions Ambient Temperature Relative Humidity Atmospheric Pressure Altitude Storage and Transport 14 F to 131 F 10 C to 55 C 5 ...

Page 58: ...utocorrelation processing Transducer Type 9 crystal Leakage Current 100 µA isolated by transducer TYPE BF I sata at the transducer face 2 7 mW cm2 Entrance beam dimensions Aaprt 10 18 cm2 Center frequency fc 1 151 MHz 40 Hz Pulse duration 92 5 µs Pulse repetition frequency 2 kHz 8 Hz Global maximum value of total acoustic power W0 27 5 mW Spatial average pulse average intensity 14 6 mW cm2 20 mW c...

Page 59: ...ensitivity MECG Sensitivity Leakage Current 1 GΩ 1 V 90 dB 30 µ V to 1 mV 0 5 mV to 5 mV 10 µA TYPE CF TOCO Mode Type Sensitivity Range Tocotransducer 20 µ V relative unit 0 to 100 relative units IUPC Mode Type Sensitivity Range Leakage Current DC Strain Gauge 20 µ V mmHg 0 to 100 mmHg 10 µA TYPE CF Antenna Type Internal helical Control Power Key Mark key Speaker volume key internal speaker and he...

Page 60: ...ck charge Li Ion battery pack 2 cells 7 2 VDC nominal 2600mAh 4 hours Approximately 12 hours when fully charged 2 5 hours backup when recharged for 30 min Audio Indicator Low Battery Audio output Internal speaker Audio head set Alarms Audio alarm for every 1 6s if battery is LOW Audio alarm for every 0 8s if battery is critical Display 132x32 resolutions in pixels Pixel 0 35x0 40mm ...

Page 61: ... 429 7375 MHz 12 5kHz 432 0000 438 0000 MHz 25kHz 440 5625 449 6625 MHz 12 5kHz 608 0250 613 9750 MHz 25kHz Frequency Band Distance Coverage 420 0500 429 7375 MHz 100m 432 0000 438 0000 MHz 500m 440 5625 449 6625 MHz 100m 608 0250 613 9750 MHz 500m Connectors DC inlet for charger Audio head set 3 parametric connector US FHR UA MECG FECG Classification Class IIb device under Rule 10 of Annex IX of ...

Page 62: ...dth Depth Weight 4 10 2cm 8 1 20 6cm 11 9 30 2cm 5 6 lbs 2 55kg Environmental Conditions Ambient Temperature Relative Humidity Atmospheric Pressure Altitude Storage and Transport 14 F to 131 F 10 C to 55 C 5 to 95 non condensing 700 1060 mbar 525 795 mmHg Operating 50 F to 104 F 10 C to 40 C 5 to 95 non condensing 700 1060 mbar 525 795 mmHg Up to 3000m Certification and Compliance UL FCC Industry ...

Page 63: ...more information Controls Power Switch UA Mode Switch Visual Indicators Power Signal Strength Transmitter Low Depleted Battery Green LED Green LED Red LED Connectors AC Line Input Auxiliary Output 3 Prong IEC Style Use only with Series 250 and 170 Monitors Classification Class IIb device under Rule 10 of Annex IX of the Council Directive 93 42 EEC Product Compatibility The system operates with the...

Page 65: ...ntended for use by healthcare professionals only This equipment system may cause radio interference or may disrupt the operation of nearby equipment It may be necessary to take mitigation measures such as re orienting or relocating the equipment system or shielding the location C 2 Manufacturer s guidance and declaration regarding electromagnetic immunity The unit is intended for use in the electr...

Page 66: ...ions and voltage variations on power supply input lines IEC 61000 4 11 5 Ut 95 dip in Ut for 0 5 cycle 40 Ut 60 dip in Ut for 5 cycles 70 Ut 30 dip in Ut for 25 cycles 5 Ut 95 dip in Ut for 5 sec 5 Ut 95 dip in Ut for 0 5 cycle 40 Ut 60 dip in Ut for 5 cycles 70 Ut 30 dip in Ut for 25 cycles 5 Ut 95 dip in Ut for 5 sec Mains power quality should be that of a typical commercial or hospital environm...

Page 67: ... the performance of the unit see Note 1 below P 2 1 d 26 MHz to 800 MHz P 2 1 d 800 MHz to 2 5 GHz where P is the maximum output power rating of the transmitter in watts W according to the transmitter manufacturer and d is the recommended separation distance in meters m Field strengths for fixed RF transmitters as determined by an electromagnetic site survey see Note a should be less than the comp...

Page 68: ...prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communica tions equipment transmitters and the unit as recommended below according to the maximum output power of the communications equipment Rated maximum output power of transmitter W Separation distance in meters m according to frequency of transmitter 150 kHz to 80 MHz P 2 1 d 80 MHz to 800 M...

Page 69: ...irty 30 days with respect to expendable parts such as batteries The foregoing warranties shall not apply if the Product has been repaired other than by GE Healthcare or in accordance with written instructions provided by GE Healthcare or altered by anyone other than GE Healthcare or if the Product has been subject to abuse misuse negligence or accident GE Healthcare s sole and exclusive obligation...

Page 71: ... Medical Systems Information Technologies Asia GE China Co Ltd No 1 Huatuo Road Zhangjiang Hi Tech Park Pudong Shanghai People s Republic of China 201203 Tel 86 21 5257 4650 Fax 86 21 5208 2008 GE Medical Systems Information Technologies Inc 8200 West Tower Avenue Milwaukee WI 53223 USA Tel 1 414 355 50001 800 558 5120 US Only Fax 1 414 355 3790 Made in India www gehealthcare com ...

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