OES Orion Anes Ventilator
Contents
1. pressure within the breathing circuit Doc 1988 501 Issue A Page 18 of 24 PRE USE FUNCTION TEST 1 Ensure that the ventilator is correctly connected refer to the ventilator set up procedure 2 Set the adjustable pressure relief valve to the required setting 3 Set the desired inspiratory time 4 Set the desired expiratory time 5 Set the desired flow rate 6 Attach a 2 litre breathing bag to the patient connection as a breathing bag 7 Fill the bellows by using the anaesthetic machine oxygen flush 8 Turn the ventilator on and ensure that the ventilator delivers the correct tidal volume this can be checked by the scale on the adult bellows housing or by using a flow sensor 9 Remove the breathing bag and occlude the end of the patient connector 10 Refill the bellows with the oxygen flush 11 Turn the ventilator back on and check that the patient circuit relieves at the set level WARNING The pressure relief valve is not intended for use as a pressure limiter but as a pressure relief valve The pressure at which the circuit relieves is effected by the flow rate set at the ventilator Doc 1988 501 Issue A Page 19 of 24 CLINICAL OPERATION 1 Prior to use with a patient check that all connections are correct and that there are no leaks 2 Perform the pre use function test 3 Set the desired ventilator parameters WARNING The actual ventilation of the pa2. Notes may appear throughout the text of this manual to indicate useful points to the user It is the responsibility of the user to read this manual and fully understand the functions of this ventilator prior to use Doc 1988 501 Issue A Page 5 of 24 PURPOSE The OES ORION VENTILATOR is a pneumatically controlled oxygen driven anaesthesia ventilator with bellows unit designed for mechanical ventilation during anaesthesia It can be used in closed circuit anaesthesia and to drive a Bain circuit The Orion Ventilator must only be used by suitably qualified personnel for the above purpose DESCRIPTION The OES ORION VENTILATOR is a time cycled flow generator type ventilator that is oxygen driven and is provided with an ascending bellows unit which is easily detachable for cleaning FRONT PANEL DESCRIPTION 1 On Off switch rotates 90 degrees clockwise to turn the ventilator on 2 Manometer calibrated between 20 to 100 cm H 0 the gauge must be connected to the inspiratory limb of the breathing circuit via the connector on the rear panel 3 Adjustable pressure relief valve calibrated at 20 cm H O at 0 5 litres per second flow Note the pressure relief valve will relieve at a slightly lower or higher level depending on the flow rate selected on the flow control knob WARNING The pressure relief valve is not intend for use as a pressure limiter but as a pressure relief valve 4 Inspiratory time co
3. cleaner or alcohol Bellows Gas or liquid such as cidex Sporicidin and Sonacide Exhaust diaphragm assembly Gas or liquid Bellows base assembly Gas liquid or low temperature autoclave Doc 1988 501 Issue A Page 23 of 24 ORDERING INFORMATION 9050 014 9060 001 9060 010 9060 011 9060 012 9060 020 9060 015 9070 001 9070 002 9070 003 9070 004 9070 005 9070 006 9070 007 9050 005 9050 001 DISPOSAL OES ORION anaesthesia ventilator 1 5 metre oxygen drive hose DISS to open end Corrugated drive gas hose 265 mm Corrugated drive gas hose 1500 mm for remote mounting of the bellows Patient breathing system drive hose 1800 mm Breathing system pressure tee piece 22 mm male female taper Pressure sensing tube silicone 2 5 metres Adult bellows assembly Adult bellows housing Adult bellows Exhaust diaphragm assembly Exhaust diaphragm assembly screws 3 off Bellows base assembly Bellows base thumbscrews 4 off Pole mount bracket Breathing circuit pressure monitor The ORION Ventilator contains metal and plastic parts which must be disposed of appropriately at the end of the lifetime of the product Re cycling may be possible Refer to your local authorities OES Medical Ltd will accept returned product for disposal if it is returned at your Own expense Doc 1988 501 Issue A Page 24 of 24
4. 21 of 24 USER MAINTENANCE Service schedule The ventilator must be serviced by a factory trained engineer to the following schedule a 3 monthly inspection and function check b 6 monthly bellows replacement c 2 yearly replacement of exhaust diaphragm d 5 yearly major service Cleaning of the ventilator control unit The ventilator control unit must only be cleaned with a damp cloth and if necessary with warm mild detergent to remove persistent grime WARNING Do not allow the cleaning liquid to enter the control unit CAUTION Do not use harsh or abrasive cleaning agents on any parts of the ventilator Doc 1988 501 Issue A Page 22 of 24 Cleaning and sterilisation of the bellows unit To disassemble the bellows assembly for cleaning and sterilisation 1 Twist the bellows housing anticlockwise until the location lugs clear the bellows base then lift it off by pushing gently at the front WARNING Ensure that the cover is not levered off on one of the location lugs on the bellows housing 2 Pull the bellows gently off the bellows base 3 Unscrew the exhaust diaphragm from the bellows base WARNING Do not lose the O seal which seals between the bellows base and the expiratory diaphragm WARNING Do not damage the exhaust seat or the seat on the exhaust diaphragm ITEM STERILISATION METHOD Bellows housing Warm mild detergent solution no abrasive
5. cement c Two yearly replacement of exhaust diaphragm d Five yearly overhaul Service requirements are detailed in the service manual that is available to factory trained personnel Further details are available from The Service department OES MEDICAL LTD UNIT 10 AREA D RADLEY ROAD INDUSTRIAL ESTATE ABINGDON OXFORDSHIRE OX14 3RY ENGLAND Phone 01235 539618 Fax 01235 539619 Always provide the following information with any communication a Type of product and part number b Product name c Serial number d Date of purchase e details of suspected fault Doc 1988 501 Issue A Page 4 of 24 USER RESPONSIBILITIES It is the responsibility of the user of the Orion Ventilator to install use and maintain it according to the instructions in this manual OES Medical Ltd is not liable for any consequences arising from the use of the Orion Ventilator outside the prescribed conditions including use by under qualified personnel WARNINGS AND CAUTIONS Throughout this manual warnings and cautions relating to various aspects of use of this ventilator are given WARNING A warning indicates that there is a possible hazard to the patient user or environment It is enclosed in a box to draw the reader s attention and MUST BE HEEDED CAUTION A caution indicates that there may be a risk of damage to equipment It is advisable to follow the instructions given in the caution NOTE
6. e shelf or on to a pole mount bracket plate to suit diameter 25 0 25 4 mm poles The bracket plate is attached by removing the feet from the ventilator and attaching the bracket in its place This plate is an optional extra see the spares section for details 2 High pressure hose assembly attach the hose to the ventilator care must be taken to attain a leak free seal without over tightening the fitting Attach the other end of the hose assembly to the high pressure oxygen supply NOTE The high pressure hose assembly when not otherwise specified has a free end which must be terminated with the correct connector for the machine to which it will be attached 3 Ventilator to bellows drive hose attach the corrugated hose to both the ventilator drive gas taper and the bellows drive gas taper 4 Manometer tube attach the silicone tube to the manometer connection on the rear panel place the pressure sensing tee piece in the inspiratory limb of the patient breathing circuit 5 Patient breathing system drive hose connect the 22 mm female taper to the bellows breathing system taper connect the other end to the patient circuit 6 Scavenging system connect the exhaust port on the bellows unit to a scavenging system WARNING The anaesthetic gas scavenging system must not generate more than 0 5 cm H20 of negative or positive pressure Failure to comply with this requirement will result in positive or negative
7. ed to set a tidal volume this should be done by referring to the movement of the bellows Small tidal volumes less than 300 ml should be achieved using the paediatric bellows assembly Doc 1988 501 Issue A Page 16 of 24 14 Minute volume range derived from tidal volume and frequency At I E ratio of 1 1 minute volumes of more than 22 5 l m can be achieved 15 Inspiratory relief pressure variable between 20 and 80 cm H2O calibrated at 20 cm H O and 0 5 1 sec Maximum relief pressure is 100 cm H O at maximum flow rate 17 I E ratio variable between 1 18 and 4 9 1 18 Weight 7 7 Kg 19 Dimensions height of complete ventilator 325 mm height of control unit 110 mm width 260 mm depth 260 mm 20 Sterilisation for details on bellows assembly sterilisation see appropriate section 22 Alarms none an airway pressure alarm is available as an optional extra VENTILATOR STANDARD PARTS The ventilator is supplied with the following standard parts 1 High pressure drive hose Specification as per order 2 Ventilator to bellows drive hose 3 Manometer tube 4 Pressure sensing tee piece 22 mm male female taper 5 Patient breathing system drive hose with male and female 22 mm taper connectors 1 8 metre long 6 User manual Doc 1988 501 Issue A Page 17 of 24 VENTILATOR SET UP PROCEDURE 1 Mounting the ventilator the ventilator can be mounted either on the anaesthetic machin
8. negative or positive pressure Failure to comply with this requirement will result in positive or negative pressure within the breathing circuit Doc 1988 501 Issue A Page 9 of 24 8 Bellows unit patient connection a 22 mm male taper connection which connects to the patient circuit via 1 8 metre length of disposable corrugated tubing Doc 1988 501 Issue A Page 10 of 24 HIGH PRESSURE MEDICAL OXYGEN DRIVE GAS INLET 300 840 KPA Doc 1988 501 Issue A Page 11 of 24 ADULT BELLOWS ASSEMBLY DESCRIPTION 1 Bellows base assembly the bellows base assembly is attached to the top of the ventilator case and incorporates an O seal for the bellows housing to seal against and an O seal to seal between the bellows base and the exhaust gas diaphragm assembly An exhaust valve seat which allows the escape of exhaust gas to the bellows exhaust port on the rear of the assembly at the end of the expiratory phase is situated in the centre of the assembly WARNING Care must be taken not to damage the exhaust valve seat 2 Bellows base screws thumb screws which hold the bellows base to the top of the ventilator case 4 off 3 Exhaust diaphragm assembly this assembly contains a diaphragm and a sealing disc which seals on the exhaust valve seat in the bellows base during the expiratory phase 4 Exhaust diaphragm assembly screws thumb screws which hold the diaphragm assembly onto the bellow
9. ntrol knob calibrated between 0 25 and 3 0 seconds accuracy the greater of 10 or 0 05 seconds Rotation of the knurled knob clockwise increases the inspiratory time 5 Expiratory time control knob calibrated between 0 5 and 6 0 seconds accuracy 10 Rotation of the knob in a clockwise direction increases the expiratory time Doc 1988 501 Issue A Page 6 of 24 Breaths per minute is determined in the following way B P M 60 Inspiratory time Expiratory time The I E ratio is determined in the following way I E RATIO INSPIRATORY TIME EXPIRATORY TIME 6 Flow control knob calibrated between 0 1 and 1 0 litres per second accuracy 10 Rotation of the grooved knob in an anti clockwise direction increases the flow rate The tidal volume delivered to the patient is determined in the following way Tidal volume inspiratory time x flow rate litres seconds litres per second Minimum tidal volume is 0 035 litres maximum deliverable is 1 6 litres because of the bellows capacity 7 Bellows unit assembly the bellows canister is marked with a scale which allows the tidal volume to the patient to be determined with bellows movement Further information on the bellows unit assembly are given on page 12 and 25 Doc 1988 501 Issue A Page 7 of 24 Doc 1988 501 Issue A Page 8 of 24 REAR PANEL DESCRIPTION 1 High pressure oxygen inlet connector a 1 5 metre long high pressure hose is
10. s base assembly 3 off 5 Adult bellows the bellows are attached to the bellows base assembly by the lower convolution on the shoulder of the bellows base assembly 6 Adult bellows housing the adult bellows housing is located on the bellows base assembly by the location ring on the bellows base assembly it is then locked in position by twisting clockwise until the lugs are located in the bellows base assembly Doc 1988 501 Issue A Page 12 of 24 Page 13 of 24 Issue A Doc 1988 501 VENTILATION CYCLE DESCRIPTION 1 The bellows prior to the start of the inspiratory phase is fully inflated and retains this position due to the weight of the exhaust diaphragm valve giving a slight back pressure within the bellows with the fresh gas flow entering the breathing circuit 2 At the start of the inspiratory phase drive gas from the ventilator enters the inside of the bellows housing and forces the bellows down driving the patient gas within the bellows into the breathing circuit During the inspiratory phase the ventilator exhaust diaphragm inflates blocking the exhaust port and the bellows exhaust diaphragm is held shut by the pressure of the drive gas flow from the ventilator 3 At the start of the expiratory phase the flow of drive gas from the ventilator ceases and the ventilator exhaust diaphragm deflates allowing the drive gas within the bellows housing to exhaust through the ventilator drive gas exhaust port as
11. supplied for connection to the DISS oxygen inlet connector 2 Driving gas connector a 17 mm male taper which connects to the bellows drive gas connector with a flexible corrugated tube shown in the illustration 3 Drive gas exhaust port the exhaust port which allows the drive gas to be exhausted from within the bellows canister the outside of the bellows as the bellows rise during the expiratory phase This function is controlled by a silicone diaphragm which is inflated during the inspiratory phase and deflates to allow gas flow during the expiratory phase WARNING Do not attempt to block the drive gas exhaust port 4 Pressure relief valve exhaust port this exhaust port allows the drive gas to exhaust to atmosphere when the set pressure at the adjustable pressure relief valve has been reached WARNING Do not attempt to block the pressure relief exhaust port 5 Manometer connection this connects to the 2 5 metres of silicone tube and the 22 mm taper male female sensing tee which must be placed in the inspiratory limb of the patient breathing circuit 6 Bellows driving gas connector a 17 mm taper which connects to the ventilator bellows drive gas connector via a flexible corrugated tube 7 Bellows unit exhaust port a 30 mm taper to which the anaesthetic gas scavenge system must be connected WARNING The anaesthetic gas scavenging system must not generate more than 0 5 cm H O
12. the bellows rise as the exhaled gas enters the bellows Excess exhaled gas exhausts through the bellows exhaust port into the scavenging system Doc 1988 501 Issue A Page 14 of 24 PNEUMATIC CIRCUIT DESCRIPTION The pneumatic circuit consists of two pneumatic timers which control a spool valve supplying high pressure oxygen to the flow control valve The oxygen inlet pressure is regulated down by a regulator which incorporates a sintered metal filter As the ventilator enters the inspiratory phase the pressure at the flow control needle activates a logic valve and causes the expiratory valve diaphragm to inflate blocking the ventilator drive gas exhaust port At the expiratory phase the diaphragm deflates as it exhausts through the logic valve allowing the drive gas to exhaust to atmosphere The pressure at the diaphragm is controlled by a low pressure secondary regulator The breathing circuit block which is attached to the rear panel incorporates the exhaust diaphragm and also an adjustable pressure relief valve which relieves if the circuit pressure reaches the pre set level during the inspiratory phase The relief valve consists of a spring loaded plunger which seals on a seat with a silicone seal The relief pressure is adjusted by changing the spring loading via the knob on the front panel There is no provision for sub ambient pressure relief as it is unlikely that the patient would be breathing spontaneously during ven
13. tient may vary from the set ventilator parameters due to compliance and circuit leaks The patient ventilation must be monitored independently from the ventilator It is the responsibility of the user to monitor patient ventilation NOTE The use of this ventilator is not recommended without the use of an electronic breathing circuit pressure monitor with appropriate alarms The use of this ventilator is recommended with agent and oxygen analysers Doc 1988 501 Issue A Page 20 of 24 FAULT FINDING FAULT CONDITION When the ventilator is turned on it does not cycle Bellows will not fill or it collapses Bellows collapses progressively during use with normal fresh gas flow Tidal volume is incorrect Doc 1988 501 Issue A POSSIBLE CAUSE 1 The oxygen high pressure hose is not connected 2 The oxygen supply is not turned on 1 No fresh gas flow 2 Breathing system hose disconnected 3 Detached or damaged bellows 4 Damaged exhaust diaphragm assembly 5 Missing or damaged O seals 6 Damaged bellows base assembly 1 Anaesthesia machine APL valve may be open 2 Breathing system leak 3 Damaged exhaust diaphragm assembly 4 Missing or damaged O seal at exhaust diaphragm assembly 1 Missing or damaged O seals 2 Damaged exhaust diaphragm assembly 3 Partially detached bellows 4 High compliance 5 low oxygen inlet pressure Page
14. tilation under anaesthesia Doc 1988 501 Issue A Page 15 of 24 SPECIFICATION 1 Application adult and paediatric ventilation during anaesthesia 2 Gas supply oxygen at 275 to 840 kPa recommended 400 kPa 3 Gas supply hose 1 5 metres of white anti static hose fitted with a DISS fitting 4 Hose end as requested by the end user oxygen probe to BS 5682 mini schrader or open supplied as standard 5 Patient airway pressure gauge 63 mm diameter aneroid pressure gauge with 20 to 100 cm H 0 2 2 cm H20 zero adjustable 6 Ventilator to bellows connection 17 mm taper NOT to any published standard to avoid mis connection 7 Bellows to patient taper 22 mm taper to BS EN 1281 1 1997 8 Bellows exhaust gas taper 30 mm taper to BS EN 1281 1 1997 9 Inspiratory time range 0 25 to 3 0 10 or 0 05 seconds 10 Expiratory time range 0 5 to 6 0 10 or 0 05 seconds 11 Frequency range 7 5 to 70 breaths per minute derived from inspiratory and expiratory times 12 Inspiratory gas flow rate 0 1 to 1 0 10 or 0 02 litre per second of oxygen at supply pressures below 350 kPa flow is reduced to no less than 75 of setting at 275 kPa pro rata 13 Tidal volume range 0 036 to 2 025 litres per breath derived from inspiratory time and inspiratory flow rate NOTE The maximum tidal volume which can be achieved is 1 6 litres due to the capacity of the bellows If it is desir
15. www ardusmedical com OES MEDICAL LTD UNIT 10 AREA D RADLEY ROAD INDUSTRIAL ESTATE RADLEY ROAD ABINGDON OXON OX14 3RY UK Tel 01235 539618 Fax 01235 539619 e mail richard oes medical co uk INSTRUCTIONS FOR USE ORION PNEUMATIC VENTILATOR Copyright 2001 OES Medical Ltd Doc 1988 501 Issue A Page 2 of 24 INDEX CONTENTS PAGE NO Index 2 Service and repairs 3 User Responsibilities 4 Warnings and cautions 4 Purpose 5 Description Front panel description 5 Front panel illustration 7 Rear panel description 8 Rear panel illustration 10 Adult bellows assembly description ll Adult bellows assembly illustration 12 Ventilation cycle description 13 Pneumatic circuit description 14 Specification 15 Ventilator standard parts 16 Ventilator set up procedure 17 Pre use function test 18 Clinical operation 19 Fault finding 20 User maintenance service schedule 21 Cleaning of the control unit 21 Cleaning and sterilisation of the bellows 21 unit Ordering information 22 Disposal 23 NOTE This symbol appears on the shortform instruction label of the ORION Ventilator It s intended meaning is to refer the user to this manual Doc 1988 501 Issue A Page 3 of 24 SERVICING AND REPAIRS In order to achieve the full operational life of the ORION ANAESTHESIA VENTILATOR the following service schedule must be adhered to a Three monthly inspection and service check b Six monthly bellows repla
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