Datex-Ohmeda S/5 M-CAiOVX, Technical Reference Manual Slot

Page 1: ... CO rev 02 S 5TM Compact Airway Module M C rev 02 Technical Reference Manual Slot All specifications are subject to change without notice Document No 800 1009 1 June 2001 Datex Ohmeda Inc 3030 Ohmeda Drive 53707 7550 MADISON WIS USA Tel 1 608 221 1551 Fax 1 608 222 9147 www us datex ohmeda com Datex Ohmeda Division Instrumentarium Corp P O Box 900 FIN 00031 DATEX OHMEDA FINLAND Tel 358 10 394 11 F...

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Page 3: ...1 4 2 Conditions exceeding normal 6 1 5 Gas exchange specifications 7 1 5 1 VO2 and VCO2 7 1 5 2 RQ 7 2 FUNCTIONAL DESCRIPTION 8 2 1 Measurement principle 8 2 1 1 CO2 N2O and agent measurement 8 2 1 2 O2 measurement 10 2 1 3 Patient spirometry 10 2 1 4 Gas exchange measurement 12 2 2 Main components 13 2 2 1 Gas sampling system 13 2 2 2 TPX measuring unit 17 2 2 3 OM measuring unit 17 2 2 4 PVX me...

Page 4: ...m troubleshooting 39 4 2 1 Sampling system leak test 39 4 2 2 Steam test for the Nafion TM tubes 39 4 3 OM measuring unit troubleshooting 40 4 4 TPX measuring unit troubleshooting 40 4 5 PVX measuring unit troubleshooting 40 4 6 CPU board troubleshooting 40 4 7 Error messages 41 5 SERVICE MENU 42 5 1 General menu 43 5 2 Gases service menu 44 5 3 Spirometry service menu 46 6 SPARE PARTS 48 6 1 Spar...

Page 5: ...pling system layout M C 15 Figure 7 Gas sampling system layout M CAiOV M CAiOVX M CAiO M COVX M COV M CO 16 Figure 8 Gas tubing layout 16 Figure 9 TPX measuring unit 17 Figure 10 OM measuring unit 18 Figure 11 PVX measuring unit 18 Figure 12 Signal processing 19 Figure 13 Control logic 20 Figure 14 Calibration data stored in EEPROM 20 Figure 15 Module bus connector pin layout 21 Figure 16 Pneumati...

Page 6: ...Datex Ohmeda S 5 monitors Document No 800 1009 1 iv ...

Page 7: ...e specifications that apply to the M CAiOVX apply also to the M CAiOVX SERVICE module Module differences the colour of the front mask is green the front panel has a SERVICE text and there are no front panel keys equipped Table 1 Options for Compact Airway modules Modules Parameters measurements CO2 N2O O2 Anesthetic agents Agent ID Spirometry Gas exchange M CAiOVX M CAiOV M CAiO M COV M COVX M CO ...

Page 8: ...t electrical shock Type BF 1 2 Typical performance 1 2 1 CO2 Measurement range 0 15 vol 0 15 kPa 0 113 mmHg Measurement rise time 400 ms typical Accuracy 0 2 vol 2 of reading Gas cross effects 0 2 vol O2 N2O anesthetic agents If CO2 concentration is below 0 1 0 0 is displayed 1 2 2 O2 Measurement range 0 to 100 vol Measurement rise time 400 ms typically Accuracy 1 vol 2 of reading Gas cross effect...

Page 9: ...of total conc 1 2 6 MAC Range 0 9 9 MAC Equation 100 O ETN x AA ETAA MAC AA 2 Formula 1 where x AA Hal 0 75 Enf 1 7 Iso 1 15 Sev 2 05 Des 6 0 1 3 Gas specifications Airway humidity 0 100 condensing Sampling rate 200 20 ml min sampling line 2 3 m normal conditions Sampling delay 2 5 seconds typical with a 3 m sampling line Total system response time 2 9 seconds typical with a 3 m sampling line incl...

Page 10: ...es CO2 readings 0 6 vol typically 1 3 2 Conditions exceeding normal Accuracy specifications under the following conditions Ambient temperature 10 40 C within 5 C of calibration Ambient pressure 500 800 mmHg 50 mmHg of calibration Ambient humidity 10 98 RH 20 RH of calibration During warm up 2 to 10 minutes anesthetic agents 5 10 minutes under normal conditions During warm up 10 to 30 minutes under...

Page 11: ...y pressures Paw Ppeak Pplat PEEPe PEEPiStat PEEPiDyn Pmean Measurement range 20 100 cmH2O Resolution 0 5 cmH2O Accuracy 1 cmH2O Airway flow Measurement range 1 5 100 l min adults for both directions 0 25 25 l min pediatric Tidal volume Measurement range 150 2000 ml adults 15 300 ml pediatric Resolution 1 ml Accuracy 6 or 30 ml adult 6 or 4 ml pediatric Minute volume Measurement range 2 20 l min ad...

Page 12: ...ad space of the sensor 9 5 ml adult 2 5 ml pediatric Resistance of the sensor 0 5 cmH2O 30 l min adult 1 0 cmH2O 10 l min pediatric 1 4 2 Conditions exceeding normal Accuracy specifications under the following condition during warm up 2 to 10 minutes Airway Pressure Paw Accuracy 2 cmH2O Tidal volume Accuracy 10 or 100 ml adult 10 or 10 ml pediatric ...

Page 13: ... apply only when a 2 meter gas sampling line is used and a Y piece with a physical dead space less than 8 ml NOTE These specifications only apply if the FiO2 level delivered to the patient is varing by less than 0 2 during the inspiratory cycle at the measurement point 1 5 1 VO2 and VCO2 Measurement range 50 1000 ml min Resolution 10 ml min Accuracy 10 or 10 ml when FiO2 65 15 or 15 ml when 65 FiO...

Page 14: ...as out Sample chamber Figure 1 TPX sensor principle Anesthetic agents or mixtures of two anesthetic agents are automatically identified and concentrations of the identified agents are measured TPX also detects mixtures of more than two agents and issues an alarm TPX is a nondispersive infrared analyzer measuring absorption of the gas sample at seven infrared wavelengths which are selected using op...

Page 15: ...tions is performed by measuring absorptions at five wavelengths in the 8 9 µm band and solving the concentrations from a set of five equations Figure 3 Infrared absorbance of AAs The measuring accuracy is achieved utilizing numerous software compensations The compensation parameters are determined individually for each TPX during the factory calibration ...

Page 16: ...TV respiration rate RR and inspiration expiration ratio in time I E determined by the settings of the ventilator The Patient Spirometry monitors patient ventilation The following parameters are displayed Expiratory and inspiratory tidal volume TV in ml Expiratory and inspiratory minute volume MV in l min Expiratory spontaneous minute volume in l min Inspiration expiration ratio I E Airway pressure...

Page 17: ... on measuring the kinetic gas pressure and is performed using the Pitot effect A pressure transducer is used to measure the Pitot pressure The obtained pressure signal is linearized and corrected according to the density of the gas Speed of the flow is calculated from these pressure values and TV value is then integrated MV value is further calculated and averaged using TV and RR respiratory rate ...

Page 18: ...surement The gas exchange measurement uses the D lite TM flow sensor and the gas sampler The basic data which is needed to obtain O2 consumption and CO2 production are volumes and concentrations Concentrations have been corrected for delay and deformation during the transport of the gas sample in a sidestream gas measurement sensor To obtain the amount of O2 consumed in ml min the amount which is ...

Page 19: ...X measuring unit OM measuring unit PVX measuring unit CPU board OM board PVX board 2 2 1 Gas sampling system The sampling system takes care of drawing a gas sample to the analyzers at a fixed rate The gas sampling system samples the measured air to the module and removes water and impurities from it A sampling line is connected to the water trap The pump draws gas through the sampling line to gas ...

Page 20: ...ween the water trap and the zero valve to balance the sample gas humidity with that of ambient air The tube will prevent errors caused by the effect of water vapor on gas partial pressure when humid gases are measured after calibration with dry gases Another nafion tube is used between the absorper and the pneumatic unit to prevent humidity caused by absorb of CO2 Gas analyzers After the zero valv...

Page 21: ...w is then diverted to the side flow of the D fend water trap to faster remove the occlusion Sampling pump and damping chamber The gas sampling pump is a membrane pump that is run by a brushless DC motor Sample flow is measured with a differential pressure transducer across a known restriction The motor is automatically controlled to maintain a constant flow even when the D fend water trap ages and...

Page 22: ...trap OM unit Nafion tube G CO2 absorber Nafion tube Figure 7 Gas sampling system layout M CAiOV M CAiOVX M CAiO M COVX M COV M CO Sample line D fend Zero valve Reference gas Front panel Pressure transducer p p TPX Occlusion valve Pump Room air Filter Absorber Room air Pressure transducer dp OM D fend 1 1 1 Filter Tubing marked with 1 is thinner in M CAiOVX and M COVX module Figure 8 Gas tubing lay...

Page 23: ...ed for temparature compensation The TPX unit includes TPX board located at the end of the unit Its function is to connect the 7 thermopile signals and the temperature sensor signal to the CPU board Figure 9 TPX measuring unit 2 2 3 OM measuring unit The oxygen measurement is based on paramagnetic susceptibility The gas and the reference gas which usually is room air are conducted into a gap in an ...

Page 24: ...d Pedi lite flow sensors Figure 11 PVX measuring unit The measurement is based on measuring the kinetic gas pressure and is performed using the Pitot effect A pressure transducer is used to measure the Pitot pressure The signal is then linearized and corrected according to the density of the gas Speed of the flow is calculated from the pressure and TV is integrated from it The Patient Spirometry c...

Page 25: ... with 2 meter gas sampling lines 2 2 6 CPU board The CPU board contains the processor and memories and A D converters that are common to the whole module The CPU board also contains preamplifiers of TPX sensor and drivers for valves fan pump and lamp The module is connected to the module bus through a RS 485 serial channel CPU board TPX board PVX Board Flow Press OM Board MUX CPU 80C196NT Anes Age...

Page 26: ...lification and offset of all amplification channels EEPROM EEPROM Figure 14 Calibration data stored in EEPROM 2 2 7 OM board The Oxygen board contains the specific electronics for the oxygen sensor Sample flow measurement and sampling system pressure sensors are on this board It also contains EEPROM s that store calibration data of both TPX and OM sensors The spirometry keyboard connection is on t...

Page 27: ...l 1 I RESET RS485 2 I 15 VDC 3 I 15 VDIRTY 4 I 15VDC 5 I O DATA RS485 6 I O DATA RS485 7 Ground and Shield 8 I RESET RS485 9 n c 10 n c 11 n c 12 n c 13 Ground and Shield 14 I 24 32 VDIRTY depends on power supply not used 15 I Ground DIRTY 16 n c 17 n c 18 n c 19 n c 20 I GASFR not used 21 I CTSD not used 22 I TXDD not used 23 O RXDD not used 24 I 5 VDC 25 I 5 VDC DIRTY for infrared lamps ...

Page 28: ...module electronics can only be repaired and calibrated at the factory 3 1 1 OM measuring unit CAUTION Due to the complicated and sensitive mechanical construction any service inside the O2 measuring unit should not be attempted 3 1 2 TPX measuring unit CAUTION The TPX photometer and its components are repaired calibrated at the factory Attempts to repair calibrate the unit elsewhere will adversely...

Page 29: ...dure The procedures are designed for monitors with software of level 00 3 2 1 Recommended tools Tool Order No Notes Screwdriver Ambient pressure manometer Flowmeter Flow cassette 50 1 1 873812 Extra silicon tubing Calibration gas and the regulator 755583 gas 755533 for M CAiOVX M CAiOV M CAiO Calibration gas and the regulator 755587 gas 755530 for M COVX Calibration gas and the regulator 755581 ga...

Page 30: ...nst the CPU board there are no loose objects inside the module NOTE The tubes that are connected to the Oxygen board pressure transducers should not be pressed too deep NOTE Make sure that tubes are not in contact with the sampling pump or the O2 sensor or its springs 2 Check external parts the front cover and the front panel stickers are intact all connectors are intact and are attached properly ...

Page 31: ...e proper functioning 2 m 7 ft sampling line should be used with M COVX and M CAiOVX Connect the Compact Airway Module to the Central Unit s Module motherboard using the Gas interface cable the grounding plates of the cable should be removed Turn the monitor on Configure the monitor screen so that all the needed parameters are shown for example as follows Monitor Setup Screen 1 Setup Waveform field...

Page 32: ...us communication 10 Enter the service menu Gases Gas Unit Gases Check that the flow measurement offset i e the shown sample Zero value is within 10 ml min 11 Check that the shown Ambient value corresponds with the current ambient pressure 20 mmHg 12 Check the zero valve Feed calibration gas and check that the gas readings in the service menu correspond with the values on the gas bottle sticker Kee...

Page 33: ...eat the test 15 Check the flow rates Wait until the Sample Flow value is back near 200 ml min Connect a flowmeter to the 3 meter sampling line use a 2 meter sampling line for M CAiOVX and M COVX and check that the flow the flowmeter reading is within the following range Sampling flow ml min 180 220 If necessary readjust the sampling flow Select Sample gain adj from the menu To increase the samplin...

Page 34: ...and M COV also with the same calibration gas as the M COVX module but M C must always be calibrated with the gas 755581 NOTE For correct measurement values modules need different amounts of oxygen in the calibration If you do not use the recommended calibration gases the calibration does not succeed 18 Perform the fall time measurement in the GASES service menu Monitor Setup Install Service passwo...

Page 35: ... creates a pressure inside the D lite Check that pressure near 5 cmH2O is generated the Aw Pressure value in the service menu If the system leaks heavily no pressure will be generated If there is a small leak in the connections the monitor will measure a pressure difference which is then interpreted as flow and seen on the monitor screen The pressure waveform and the Aw Pressure value decreases sl...

Page 36: ...en 24 Block the tip of the sampling line by your finger and check that the message Sample line blocked appears onto the monitor screen within 60 seconds 25 Detach the D fend and check that the messages Check D fend appears onto the monitor screen within 30 seconds Reattach the D fend Simulate at least 5 breaths by feeding calibration gas into the sampling line Check that the shown gas information ...

Page 37: ...PX unit from CPU board 4 Disconnect OM unit s cables spirometry keyboard cable and PVX unit s cables from the OM board 5 Detach the front panel from the module chassis 1 screw 6 Detach the PVX unit from the front panel 1 screw 7 Reassembling is essentially reversing what was described above 3 3 2 Pump unit 1 Remove the module box 2 Cut off the pump s clamp panduit 3 Unplug the hoses of the pump 4 ...

Page 38: ... calibration instructions 3 4 1 Gas sampling system adjustment NOTE Let the monitor run for 15 minutes before measuring flow rates For the flow rate measurements a flowmeter with a low flow resistance and capability to measure low flow rates is required A normal length of sampling line has to be connected to the monitor as it has a considerable effect on the flow 3 4 2 Flow rate measurement If any...

Page 39: ...tion is needed it is recommended to perform the calibration both with adult values using the D lite and with pediatric values using Pedi lite 1 Connect a spirometry tube with a D lite sensor to the compact airway module To improve the accuracy the endotracheal tube and all accessories which normally are in use should be attached also during the calibration 2 Enter the Gas Unit service menu Monitor...

Page 40: ...REBREATHING message FiCO2 high message 1 CO2 concentration in inspiratory air is too high Possibly CO2 absorber in ventilation is saturated Change the ventilation absorber SAMPLE LINE BLOCKED message Air leak message 1 Sampling line or water trap is occluded Water trap container is full If occlusion persists check internal tubing for blockages SELECT AGENT message 1 No anesthetic agent is selected...

Page 41: ...ase in circulation pulmonary embolism hyperventilation very large dead space large shunting leak in sampling system calibration error high by pass flow from ventilator check all connections check calibration too high ETCO2 hypoventilation increased metabolism D fend contaminated calibration error change D fend check calibration waveform clipped incorrect scaling change scale no response to breathi...

Page 42: ...aks check D fend exp TV insp TV spirometry tube leak check leakages perform leak test water inside D lite or tubings change tubings and D lite don t use active humidification loop overscale wrong scale selected change scaling monitored volumes set volumes leak between ventilator and D lite check ventilator connections strongly vibrating loop mucus in ET tube suction the patient water or secretions...

Page 43: ...s asthmatic patient bronchospasm Raw value invalid spontaneous breaths breathing efforts against the ventilator patient triggered breaths too high Ppeak bronchospasm patient is coughing patient breaths against the ventilator obstruction in airways HME obstructed static PEEPi not measured CO2 measurement is not connected connect CO2 meas to D lite stat PEEPi measurement not selected 1 exp pause did...

Page 44: ...s unstable O2 delivery gas mixer select oxygram and verify the stableness of the curve RR over 35 min reference gas inlet port blocked check reference port gas sampling line longer than 2 m change 2 m sampling line dead space of Y piece 8 ml check the dead space of Y piece gas sampling line connected to HME gas sampling line should ALWAYS be connected to D lite D lite incorrectly placed do not con...

Page 45: ...ent the module from performing the normal occlusion functions i e controlling the valves by turning the pump first off then on again from the menu 2 Block the reference gas connector at the front panel 3 Connect a flow cassette with high flow resistance value 50 1 1 to the end of the sampling line and start following the Amb Work value in the service menu When the value exceeds 170 mmHg connect th...

Page 46: ...noisy check the measurement unit suspension 4 4 TPX measuring unit troubleshooting CAUTION The TPX measuring unit can only be repaired and calibrated at the factory In case of failure the whole module should be replaced and the faulty module be sent to Datex Ohmeda for repair 4 5 PVX measuring unit troubleshooting In case of failure the PVX unit can be replaced NOTE Never apply overpressure or neg...

Page 47: ...p membrane This decreases air flow Gas calibration is not available during first 5 minutes during occlusion during air leak Entering calibration is not allowed during 5 minutes after power up and during occlusion or air leak Select agent 1 No agent selected Select agent1 Mixture of agent is detected but no agent is selected Check agent1 Agent is selected manually but it differs from the identified...

Page 48: ...Datex Ohmeda S 5 monitors Document No 800 1009 1 42 5 SERVICE MENU Press the Monitor Setup key select Install Service password 16 4 34 select Service password 26 23 8 select Parameters select Gas Unit ...

Page 49: ... is a cumulative number that indicates how many times communication from the module to monitor broke down Bad c s by mod is a cumulative number that indicates how many communication errors the module has detected The monitor starts counting these items at power up and resets to zero at power off The nonzero values do not indicate a failure but the continuous counting more than 50 per second indica...

Page 50: ... module XXX TAI MUUALLE MIHIN XXX M REC Service Data field O2 CO2 N2O AA field shows realtime concentrations noise is standard deviation of concentration O2 CO2 N2O AA channels A E mV field signal is scaled to mV Gain User gain It is scaled as User gain Factory gain ID Shows the identified agent ID unrel The shown value tells how unreliable the identification is With pure agent the value is normal...

Page 51: ...100 is shown Pump voltage is also shown Lamp The state PWM control and current of the lamp are shown Fan The state of the fan is shown Zero and Occl valve Can be toggled between measurement state MEAS and zeroing occlusion states ZERO OCCL Temp Temperatures measured by the module from TPX CPU and OM Time after power on In minutes after power on ...

Page 52: ...in Insp Flow Gain Adjust the Flow sensor gains Valves Switch between MEASUREMENT and ZEROING VCO2 VO2 GainAdjust the VCO2 and VO2 gain Y deadspace Adjust the Y deadspace N2 injection Select between on 1 and off 0 Record Data Record Data prints out the shown service data and board information id serial number and software id onto the recorder module M REC Service Data field Sensor ADULT PEDIATRIC a...

Page 53: ...l Insp are shown to ease calibration The numbers are the same as on main display The former pump calibration procedure has been dropped out We claim that calibration is not needed in routine clinical use so a separate Flow calibration menu is not needed Calibration can be done with the pump or spirometry tester The results must be taken from the screen and gains adjusted accordingly VCO2 and VO2 G...

Page 54: ... 01 M CAiOV rev 01 M COVX rev 00 Item Description Order No Item Description Order No 1 CPU board Compact Airway Module 884313 11 Module box double width 893225 2 PVX unit Compact Airway Module 895946 12 Latch 879181 3 Sampling pump Compact Airway Module 57313 13 Spring pin 879182 4 Special tube 300mm 733382 14 Cable tie 640013 5 Fan Compact Airway Module 886213 15 Cross recess screw UNC4 40 61841 ...

Page 55: ...rev 02 S 5 M COVX rev 02 S 5 M COV rev 03 S 5 M CO rev 02 S 5 M C rev 02 No new spare parts See S 5 stickers below 6 1 4 Front panel stickers Front panel stickers that are related to the Compact Module type and adaptation Adaptation codes DA Danish DE German EN English ES Spanish FI Finnish FR French IT Italian JA Japanese NL Dutch NO Norwegian PT Portuguese SV Swedish Adaptation M C rev 00 01 M C...

Page 56: ...249 892251 897787 897798 FR 890690 890699 890684 897782 897793 IT 892236 892237 892239 897785 897796 JA 894988 894989 894990 897791 897802 NL 892230 892231 892233 897783 897794 NO 893546 893545 893542 897789 897800 PT 895247 895248 895243 897786 897797 SV 891103 891102 891099 897788 897799 6 1 5 S 5 stickers Adaptation S 5 M C rev 02 S 5 M CO rev 02 S 5 M CAiO rev 02 blanco sticker for all item 20...

Page 57: ...898532 898544 898629 IT 898654 898666 898535 898547 898632 JA 898660 898672 898541 898553 898638 NL 898652 898664 898533 898545 898630 NO 898658 898670 898539 898551 898636 PT 898655 898667 898536 898548 898633 SV 898657 898669 898538 898550 898635 Service sticker 898542 898623 6 1 6 Planned Maintenance PM Kits Compact Airway Module M xxxxxx Anesthesia w o CO2 absorber 8001758 Compact Airway Modul...

Page 58: ...l slot main manual Note Compact Airway Module M CAiOVX rev 00 Compact Airway Module M CAiOV rev 02 Compact Airway Module M CAiO rev 01 Compact Airway Module M COVX rev 01 Compact Airway Module M COV rev 02 Compact Airway Module M CO rev 01 Compact Airway Module M C rev 01 896 619 896 624 ...

Page 59: ...APPENDIX A Service check form S 5 Compact Airway modules Document No 800 1009 1 53 APPENDIX A ...

Page 60: ...Datex Ohmeda S 5 monitors Document No 800 1009 1 54 ...

Page 61: ...2 External parts 3 Fan filter 4 D fend O rings 5 Other filters Notes OK N A Fail OK N A Fail 6 Fan 7 Module software GAS 8 Module configuration 9 Module bus communication 10 Flow measurement offset 10 ml min 11 Ambient pressure 12 Zero valve 13 Special tubes CO2 absorber 14 Leak test 6 mmHg min 15 Flow rates Sampling flow 180 220 ml min Reference flow M CAiOVX M COVX 27 40 ml min Reference flow M ...

Page 62: ...as calibration 18 Fall time measurement CO2 fall time 400 ms O2 fall timeb 400 ms CO2 N2O delay 800 ms AA option S N 19 ID unrel 50 Patient spirometry option S N OK N A Fail OK N A Fail 20 Spirometry system leak test 21 Flow waveform 22 Spirometry tester All modules 23 Electrical safety check 24 Occlusion detection 25 Air leak detection 26 Apnea detection 27 Final cleaning Notes Used Spare Parts S...