Blease
Blease Anesthesia Devices and Accessories
BleaseGenius MRI Anaesthesia Machine User Manual Rev C Dec 2010
User Manual
106 Pages
Preview
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BleaseGenius MRI Anesthesia Machine MRI Compatible
User Manual BleaseGenius MRI User Manual
073-0241-00/REV. C 1
2
BleaseGenius MRI User Manual
BleaseGenius MRI Anesthesia System
User Manual MODIFICATIONS LABEL REV A
REV B
REV C
PR023073
PR023688
PR023860
REV F
REV G
REV H
REV D
REV E
REV I
REV J
Spacelabs Healthcare Ltd. (Anesthesia Delivery & Ventilation Division) 1 Harforde Court • John Tate Road • Hertford • SG13 7NW • United Kingdom Tel: +44 (0)1992 507700 Fax: +44 (0)1992 501213 e-mail (enquiries): [email protected] e-mail (technical): [email protected] www.spacelabs.com
BleaseGenius MRI User Manual
Part Number: 073-0241-00/Rev. C December 2010
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BleaseGenius MRI User Manual
IMPORTANT The user must be familiar with the machine and its various functions before using it on a patient.
U.S. Federal law restricts this device for sale by or on the order of a physician.
Incorrect use of the equipment described herein may result in injury to the patient. Read this manual before operating the machine. You must be familiar with the machine and its functions before using it on a patient. Be sure to pay special attention to warnings, cautions and notes within the manual. A full list of these can be found in Section 4 of this manual. Warning Notices Warning notices denote a potential hazard to the health and safety of users and/or patients. These notices clearly state the nature of the respective hazard and the means by which it can be avoided. Warning notices appear in full in the preliminary pages and are repeated at their points of application in the manual. Caution Notices Cautionary notices denote a potential hazard to the physical integrity of equipment/software but NOT a danger to personnel. These notices clearly state the nature of the hazard and the means by which it can be avoided.
Notes This symbol indicates information that is relevant or helpful to the user.
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BleaseGenius MRI User Manual
Table of Contents
Contents
Page
Chapter 1 Introduction Symbols and Abbreviations Used 1.1
Introduction
15 16 17
Chapter 2 Description 2.1 2.2 2.3 2.4 2.5
General The Frame Pneumatic Assembly Flowblock Assembly Detachables
19 23 23 23 24 24
Chapter 3 Specification 3.1
Physical
3.1.1 Machine Weight and Dimensions 3.1.2 Maximum Loading (wall bracket)
3.2
Pneumatics
3.2.1 Gas-Specific Color Specifications 3.2.2 Miscellaneous 3.2.3 Common Gas Outlet
3.3 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 3.3.7
3.4
25 26 26 26
26 26 26 26
Technical/Performance Specifications
27
Controls Monitoring Alarms/Indicators Oxygen Monitor Technical Specifications Regulator Safety Valve Settings Supplies Environmental
27 27 27 28 28 28 29
Ancillaries and Optional Features
29
3.4.1 Standard Features 3.4.2 Optional Fittings
BleaseGenius MRI User Manual
29 30
7
Chapter 4 Installation 4.1 4.2 4.3
33
Unpacking and Installing the Cylinders Pipeline Connections Connecting the Oxygen Transducer
4.3.1 Guidelines for Handling
4.4 4.5 4.5.
4.6 4.7 4.8 4.9
35 37 38 39
Fitting a Selectatec Vaporizer Fitting an Absorber
39 42
Making The Breathing System Connections
42
Fitting the Bellows Fitting Suction Units Fitting Ancillary Equipment Post-Installation Check
42 42 43 44
Chapter 5 Operation 5.1 5.2 5.3 5.4 5.5 5.5.1 5.5.2 5.5.3 5.5.4 5.5.5 5.5.6 5.5.7 5.5.8 5.5.9 5.5.10
5.6 5.7 5.7.1 5.7.2 5.7.3 5.7.4 5.7.5
8
45 General Oxygen System and Oxygen Failure Warning Device Nitrous Oxide System Medical Air System Oxygen Monitor System
47 50 51 52 53
Principles of Operation Components Description Calibrating the O2 Monitor To Calibrate the O2 Monitor. Automatic Calibration to Room Air Factors Influencing Calibration Alarm Setting Procedure Basic Operation Alarm Conditions Problem Solving
53 57 60 61 62 62 64 65 65 66
Fitting a New Oxygen Sensor Controls
66 67
On/Off Switch Flow Controls Oxygen Flush Hypoxic Guard Vaporizers
67 67 68 68 69
BleaseGenius MRI User Manual
Chapter 6 User Maintenance 6.1 6.2 6.3 6.4
User Checking Policy Pre-Use Check (Perform on a daily basis) Full System Check Cleaning
71 73 73 73 73
Chapter 7 Pre-Use Check 7.1 7.2 7.3 7.4 7.5 7.6
Cylinder and Pipeline Supplies Flowblock Assemblies Oxygen Failure Warning System Check Oxygen Monitor Check Leak Test -Vaporizers General
75 77 77 78 78 79 79
Chapter 8 Full System Check 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8
Leak Test On/Off Switch and Warning System Checks Mechanical Hypoxic Guard Test Oxygen Flush Tap Test Auxiliary Outlet Test Vaporizer Test Integrated Oxygen Monitor Tests General Test
81 83 84 85 85 85 86 86 86
Chapter 9 Notices & Important Information 9.1 9.2 9.3 9.4
Product Improvement Responsibilities of the User Responsibilities of the Manufacturer Disclaimer
BleaseGenius MRI User Manual
87 89 89 89 90 9
9.5 9.6
Technology Disclaimer / Tamper Proof Seal Note to Service Personnel
9.6.1 Contact Details
9.7 9.8 9.9 9.10 9.11
91
CE Marking Trademarks and Acknowledgements Warnings Electrostatic Sensitive Devices (ESD) Warnings and Cautions Cautions
9.11.1 Anesthetic Machines
9.12 9.13 9.14
90 90 91 92 93 94 95 95
Oxygen Monitor Ventilator Vaporizer
96 97 98
Appendix A Optional Ventilator Mounting Bracket
10
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List of Figures Figure 1 - BleaseGenius MRI
20
Figure 2 - Battery Pack
21
Figure 3 - Parameter Diagram
22
Figure 4 - Installing the Cylinders
36
Figure 5 - Oxygen Probe
38
Figure 6 - CAS Absorber
41
Figure 7 - BleaseGenius MRI Components
46
Figure 8 - BleaseGenius MRI Pneumatic Circuit
49
Figure 9 - Blease Oxygen Monitor Figure A1 - Optional Ventilator Mounting Bracket
BleaseGenius MRI User Manual
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Copyright © 2010 Spacelabs Healthcare Ltd. All rights reserved. The information contained in this publication may not be used for any purpose other than that for which it was originally supplied. This publication may not be reproduced in part or in whole without the written consent of Spacelabs Healthcare Ltd.
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BleaseGenius MRI User Manual
Important
BleaseGenius MRI Anesthesia System
Important Read this Manual before operating the Equipment. Read the Vaporizer manual before operating the machine. Read the Ventilator manual before operating the machine. The user must be familiar with the machine and its various functions before using it on a patient.
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BleaseGenius MRI User Manual
Chapter 1
BleaseGenius MRI Anesthesia System
Chapter 1
Introduction
BleaseGenius MRI User Manual
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Chapter 1
Symbols and Abbreviations Used Caution - Consult accompanying documentation
Year of manufacture
IEC symbol denoting type B applied part
Manufacturer
WARNING: There is danger of personal injury the user or patient
CE Mark. Confers approval under the European Medical Device Directive and the Notified Body Number
Further relevant or helpful information
Equipment serial number
Caution: Denotes a potential hazard and NOT a danger to personnel
Consult operating instructions
Power Off
Oxygen Flush
Power On
Bag
l/m l/pm Liters per minute ml
Milliliters Liters
l
O2
Oxygen This symbol indicates that the waste of electrical and electronic equipment must not be disposed as unsorted municipal waste and must be collected separately. Please contact an authorized representative of the manufacturer for information concerning the decommissioning of your equipment
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Cylinder Pipeline
psi psig
Pounds per square inch Pounds per square inch gauge ESD - Electrostatic Discharge
Safe for use in a magnetic resonance (MR) environment
BleaseGenius MRI User Manual
Chapter 1 1.1
Introduction
This manual describes the BleaseGenius MRI anesthetic machine and the instructions required to install, set up, operate and maintain this machine. If an integrated oxygen monitor is installed, refer to the Oxygen Monitor section in this manual. For information on vaporizer operation, refer to the vaporizer operating manual. This manual, the vaporizer manual and the machine’s associated documentation should be studied thoroughly before any attempt is made to set up, use or operate the machine. Requests for advice, assistance or servicing facilities should be addressed to Spacelabs Healthcare or an authorized Spacelabs Healthcare agent. Any adaptations, modifications or procedures not recommended by Spacelabs Healthcare or their agents may affect any warranty relating to the machine. No matter which part of the manual you are using, you should always be familiar with the Warnings and Cautions sections at the beginning of the manual. Before using this system, familiarize yourself with the BleaseGenius MRI Anesthesia System by reading through this entire manual. Also read the manuals for any optional monitors and accessories installed in the system. Pay special attention to the Warnings and Cautions that appear throughout this manual and any that are summarized in the Warnings and Cautions at the beginning of this manual. Read the User Responsibility statement. It describes your responsibilities to maintain the system. Read the Warranty. It describes Spacelabs Healthcare’s responsibility in case of a functional defect. Keep this manual with the system to refer to and to answer any questions that arise about the system’s operation, maintenance or, if necessary, repair.
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BleaseGenius MRI User Manual
Chapter 2
BleaseGenius MRI Anesthesia System
Chapter 2
Description
BleaseGenius MRI User Manual
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Chapter 2 B T H
S L
M G N K A D J
P A B D F G H J
W
Frame Pneumatic unit Hypoxic guard Cylinder/pipeline gauges Flowblock assemblies Oxygen flush Cylinder Reg Box
F K L M N P T W
Flow control knobs Backbar Vaporizer Common gas outlet Main On/Off switch Oxygen monitor N2O/Air selector switch
Figure 1 - BleaseGenius MRI 20
BleaseGenius MRI User Manual
Chapter 2
Figure 2 - Battery Pack
BleaseGenius MRI User Manual
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Chapter 2
25 G
625 G
1000 G
30FT
20FT
10FT
5FT
30000G/ 3T
5FT
10FT
20FT
30FT
625 G
25 G BleaseGenius MRI Anesthesia Systems can be safely used up to the 1000G line.
Figure 3 - Parameter Diagram
The oxygen sensor must be fixed to the BleaseGenius MRI anesthesia system during an MRI examination. If oxygen sensor is not connected to the BleaseGenius MRI anesthesia system and is placed near the patient during an MRI examination the picture quality of the MRI system will be adversely affected.
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Chapter 2
2.1
General
The BleaseGenius MRI anesthesia system contains all the pneumatic circuitry, controls, monitoring, ancillaries and storage required to control, distribute and mix medical gases and anesthetic agents in order to deliver them to a patient system. The system is available in one width only. The gas options available are two and three gas. The BleaseGenius is safe for use in a magnetic resonance (MR) environment. The BleaseGenius MRI is designed to comply with ISO 5358 and BS EN 606011 and BS EN 740. Referring to Figure 1, the BleaseGenius consists of four sections: a frame A, a pneumatic assembly B, flowblock assembly G and a set of detachables. • • • • •
2.2
The BleaseGenius MRI machine has been tested with Siemens and Philips Scanners without adverse side effects. Can operate up to the 1000 gauss line (0.1T) or beyond, with up to 3 Tesla scanner. Made entirely from non-ferrous materials. Can stand directly next to the scanner (3 Tesla). Closed, semi-closed and open system.
The Frame
The frame is made of extruded aluminum and can be supplied as wall mounted, with a specifically designed trolley or can be mounted on a Modura Rail.
2.3
Pneumatic Assembly
The frame contains the pneumatic assembly B in Figure 1. The pneumatic unit contains the pneumatics that regulate the supply pressures to a usable pressure, the oxygen failure alarm and its logic circuitry. The lower area contains the cylinder contents and pipeline pressure gauges, flow control valves, hypoxic guard, flowblock assemblies, the pneumatic power On/Off switch and gas selection switch. The Vaporizer Backbar contains the common gas outlet, Pressure Relief Valve and O2 cell connection point. The pneumatic power outlet is located on the top left hand side. BleaseGenius MRI User Manual
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Chapter 2
2.4
Flowblock Assembly
The flowblock assemblies G in Figure 1 may contain an integrated oxygen monitor. The monitor uses a Galvanic sensor to measure the oxygen concentration of patient gases. It is also equipped with low and high concentration alarms.
2.5
Detachables
The detachables consists of four hooks, up to four v-brackets, oxygen, nitrous oxide and air supply hoses (if the machine has the relevant pipeline inlets) and a user manual. Other accessories are listed in 3.5 Ancillaries and Optional Features.
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BleaseGenius MRI User Manual
Chapter 3
BleaseGenius MRI Anesthesia System
Chapter 3
Specification
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Chapter 3
3.1
Physical
3.1.1
Machine Weight and Dimensions Weight
Height
Width
Depth
25kg
675mm
400mm
180mm
3.1.2
Maximum Loading (wall bracket)
50kg depending on the type of fixings.
3.2
Pneumatics
3.2.1
Gas-Specific Color Specifications Gas
ISO
ANSI
Oxygen
White
Green
Nitrous Oxide
Blue
Blue
Air
Black
Yellow
3.2.2
Miscellaneous
Max no, of gases
Max no. of cylinders
Max no. of pneumatic pipeline inputs
3
2
3
3.2.3
Max no. of outlets Air
O2
0
1
Electrical outlets*
0
Common Gas Outlet
The common gas outlet is fitted at the Right Hand side of the Backbar and is a non swivel type. It will accept a 22mm female or a 15mm male taper coupling.
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BleaseGenius MRI User Manual
Chapter 3
3.3
Technical/Performance Specifications
3.3.1
Controls
Oxygen Flow
150 ml/m to 10 l/m Simplex/Cascade
Nitrous Oxide flow
0 ml/m to 12 l/m Simplex/Cascade
Airflow
0 ml/m to 15 l/m
Flowblock assembly accuracy
±(1.875% measured value + 0.625% fullscale) at 20ºC and 101.3kPa / 14.7psi
Oxygen Flush
45 to 50 l/m
Vaporizers
Selectatec
Hypoxic gasses
Minimum 21% oxygen/nitrous oxide mixture allowed
3.3.2
Monitoring
Oxygen flow
3.3.3
0 to 100% O2
Alarms/Indicators
Oxygen failure
Audible alarm for minimum of 8 seconds when oxygen pressure falls below 225kPa / 32.7psi
High Oxygen
30 to 100% O2
Low Oxygen
15 to 85% O2
Sensor cable disconnected
O2 sensor not connected indicator
Low battery
Battery voltage low light
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Chapter 3 3.3.4
Oxygen Monitor Technical Specifications
Accuracy
±1% of full scale at constant pressure and temperature
Response Time
90% of final reading in less than or equal to 15 seconds
Stability
Less than 1% of full scale over an 8 hour period
3.3.5
Regulator Safety Valve Settings
Cylinder
360kPa / 52.2psi
Cylinder regulator relief valve
500kPa / 72.5psi
Machine gas piping design rating
500kPa / 72.5psi max
Secondary hypoxic regulators
193kPa to 221kPa / 28 to 32psi
Common gas outlet relief valve
48.3kPa / 7psi
3.3.6
Supplies
O2, Air, N2O pipeline
400kPa / 58.0psi BS 5682 Medical Grade Air
Auxiliary pneumatic outlets
O2 400kPa / 58psi at zero flow. 80 l/m max flow
Battery power supply
3V (not rechargeable) 8 off AA Long Life Primary Cells
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Chapter 3 3.3.7
Environmental
Temperature
5ºC-40ºC (41ºF-104ºF) oxygen cell operates to specification 10ºC-40ºC (50ºF-104ºF)
Storage
20ºC-60ºC (-4ºF-140ºF) with batteries and oxygen cell removed 0ºC-50ºC (32ºF-122ºF) with batteries and oxygen cell in place
Humidity
15-95% Non-condensing
3.4
Ancillaries and Optional Features
3.4.1
Standard Features • • • • • • • • • • • • •
Color coded cylinder pressure gauge labels Pin index yokes with color coded symbols A choice of simplex or cascade rotameters is available Oxygen preferential flowblock assembly Oxygen failure alarm with multi-gas cutout devices Cardiff swivel common gas outlet with over pressure relief valve ON/OFF pneumatic and electrical switch Oxygen flush High pressure oxygen outlet Cable hooks Multipurpose hooks and mounting blocks ‘V’ brackets for supporting suction systems etc High Pressure Ventilator oxygen outlet
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Chapter 3 3.4.2
Optional Fittings
Hypoxic Guard Simplex Rotameter
*
Cascade Rotameter with Hypoxic Guard
*
Integral Oxygen Monitor UK
12400597
Active Gas Scavenging System 120 liters/min
12800000
High Suction Kit comprising of Suction Controller (V mounted), receiver jar and fittings
11400014
Venturi Suction Kit comprising of Suction Controller, receiver jar 11400025 (V mounted) & fittings Magill Circuit
ST7557
Lack Circuit
2010
Semi-closed Circuit
2020
Cylinder Key
11901766
Ventilator mounting bracket Kit
12400116
Integrated oxygen monitor
12400600
Monitoring shelf (white, trolley mount only)
12400114
*
Part number varies with configuration, available on request
3.4.2.1
Vaporizer Fittings
Backbar for Selectatec vaporizer
3.4.2.2
12400300
Vaporizers
BleaseDatum Vaporizers with standard fillers Selectatec Mounting Halothane calibrated to 5% v/v
13022218
Enflurane calibrated to 5% v/v
13032218
Isoflurane calibrated to 5% v/v
13012218
Sevoflurane calibrated to +8% v/v
13062218
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BleaseGenius MRI User Manual
Chapter 3 BleaseDatum Vaporizers keyfill Selectatec Mounting Halothane calibrated to 5% v/v
13022118
Enflurane calibrated to 5% v/v
13032118
Isoflurane calibrated to 5% v/v
13012118
Sevoflurane calibrated to +8% v/v
13062118
Other vaporizer mounting options available on request. 3.4.2.3
Suction
High Suction Units Complete with Jar High Suction Controller, Direct Mounting with Mark 3/4 Probe, 2 liter Receiver Jar for Rail Mounting
11400000
High Suction Controller, Dovetail V Mounting with Pipeline 11400001 and Mark 3/4 Probe 2 liter Receiver Jar for Dovetail V Mounting Low Suction Units Complete with Jar O2 Low Suction Controller Direct Mounting with Pipeline and Probe, 2 liter Receiver Jar for Dovetail V Mounting
11400025
Air Low Suction Controller Dovetail V Mounting with Pipeline 11400026 and Probe, 2 liter Receiver Jar for Rail Mounting Listed above are the most common configurations; others are available on request.
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Chapter 3
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BleaseGenius MRI User Manual
Chapter 4
BleaseGenius MRI Anesthesia System
Chapter 4
Installation
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Chapter 4
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BleaseGenius MRI User Manual
Chapter 4
4.1
Unpacking and Installing the Cylinders
Upon delivery, inspect the system and its accessories for signs of damage that may have occurred during shipment. If any damage is found, immediately notify the transportation company and file a damage claim. Save the original shipping container, packaging, materials and any manuals or instructions. Many of the steps in the following sections will be performed when a service representative installs the system. Some of the system’s accessories have installation instructions that describe in greater detail the procedures described in this section. However, during use, maintenance or sterilization, the system components may be left disconnected or may be reconnected incorrectly. Read through Chapter 5 Operation to confirm that your system is setup properly. Perform any steps necessary to correctly connect your system’s components. 1. Open the yoke by turning the bridge piece counter-clockwise. 2. Ensure that the Bodoc seal is fitted to the cylinder/yoke connector and is clean and undamaged. 3. When fitting a new cylinder, ensure that its seal and cap are undamaged. 4. Remove the seal and cap from the cylinder and discard. 5. Using a non-ratchet cylinder key momentarily open the cylinder. As soon as gas issues from the cylinder close the cylinder again. WARNING: Cylinders MUST be MRI compatible
6. Check that the pin indexing on the cylinder valve corresponds to that in the yoke. 7. Align the cylinder’s connection with the corresponding connections in the cylinder yoke on the machine, and position the valve in the opening in the yoke. 8. Taking care to align the yoke’s connector and pins with the corresponding holes in the cylinder valve, push the cylinder into the opening of the yoke so that the connector becomes fully engaged.
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Chapter 4 9. Whilst supporting the cylinder from underneath, close the cylinder yoke by turning the bridge clockwise until its cutout is fully engaged in the coupling on the yoke body.
A B C D
-
Cylinder Yoke Locking handle Bridge WARNING: Cylinders MUST be MRI compatible
Figure 4 - Installing the Cylinders
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BleaseGenius MRI User Manual
Chapter 4 10. Secure the cylinder by turning the locking handle clockwise so that the screw engages with the location in the cylinder valve. Tighten the handle until the cylinder is firmly secured against the connecting face of the yoke. 11. Repeat for all the cylinders on the machine. To prevent leakage from the cylinder valve gland nut, keep the cylinder valves shut when not in use.
WARNING: To avoid stripping threads, do not use wrenches on the yoke gate T screws.
4.2
Pipeline Connections 1. Remove and discard the protective caps from the pipeline inlets. 2. Ensure that each pipeline (O2, N2O or Air) is coupled to the appropriate inlet by noting which gas is marked on the inlet. WARNING: The pipeline connections are not interchangeable, as they are fitted with gas-specific male NIST connectors (DISS on USAspecification machines).
3. Align the pipeline’s probe with the corresponding inlet coupling. 4. Push the probe into the coupling until the threaded section engages with the thread on the connector. 5. Secure the connector by rotating the locking ring fully clockwise (hand tight only). 6. Repeat for all the required pipeline supplies. 7. Plug the pipelines into suitable outlet points.
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Chapter 4
4.3
Connecting the Oxygen Transducer Part No 70300001 1. Connect the transducer plug to the mating connector which is located above the vaporizer backbar to the right. Press the plug release catch into the plug body while pushing it into the connector. WARNING: The oxygen monitor will need at least 10 minutes to stabilize after it has been turned on. The transducer should always remain plugged into the machine to ensure that it is ready for use.
2. The transducer should be placed in the upright position (cable exit on top) when in use. See also section 4.3.1 Guidelines for Handling, paragraph 2 for further details.
O2 Sensor Body ‘O’ Ring Diffuser
Connector Figure 5 - Oxygen Probe The oxygen sensor measures the concentration of oxygen in the patient circuit.
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BleaseGenius MRI User Manual
Chapter 4 4.3.1
Guidelines for Handling 1. Do not expose the O2 sensor to gas samples exceeding those listed under “Operating Temperature”. 2. In general, there are no altitude restrictions for installation of the O2 sensor. However, for optimal performance and life characteristics, it is recommended that the sensor be mounted with the sensing surface pointed down or in a horizontal position. It is recommended that the sensor should not be installed with the sensing surface facing in an upward facing position. 3. Take precautions to prevent condensation forming on the sensor surface. 4. Do not subject the sensor to excessive shock or vibration. In general, do not expose the sensor to shock greater than 2.7G. WARNING: Do not attempt to disassemble or modify the sensor.
4.4
Fitting a Selectatec Vaporizer
The maximum number of vaporizers that can be fitted to the BleaseGenius MRI Unit is one. 1. Remove the protective caps from the inlet ports on the vaporizer and discard. 2. Check that the ‘O’ rings on the male connectors on the backbar manifold are present and undamaged (replace if necessary). 3. Ensure that there is no foreign matter present on the mating surfaces of the manifold or the vaporizer. 4. Turn the vaporizer locking lever fully counter-clockwise. 5. Turn the vaporizer concentration setting control fully clockwise to off. 6. Position the vaporizer to the backbar manifold so the manifold ports align with the vaporizer ports.
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Chapter 4 7. Push the vaporizer down on to the backbar manifold and secure in position by turning the locking lever fully clockwise. Refer to the vaporizer operating manual for filling and operating instructions. 8. Carry out Leak Test (refer to section 7.5 Leak Test - Vaporizers in this manual) for details. WARNING: Refer to the vaporizer operating manual, before use, for filling, operating and service instructions. The manual also contains information concerning the extent to which the delivered vapor concentration is affected by changes in ambient temperature and pressure, and accuracy and calibration details, which should be understood before use. Vaporizers should not be used when set between the OFF position (or the ZERO position if this is also the OFF position) and the first graduation mark. WARNING: Do not use any vaporizer that is visibly misaligned on the manifold or that, when it is locked, can be lifted off the manifold. Incorrect mounting may result in incorrect delivery of gases.
To remove a vaporizer: 1. Move the vaporizer control knob to Off. 2. Turn the vaporizer locking knob fully counter-clockwise to release the vaporizer. 3. Carefully lift the vaporizer straight up and off the manifold.
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BleaseGenius MRI User Manual
Chapter 4 K J
L
M
N
A
I
B H C G
D F With Bypass
E
Key A B C D E F
I J K L M
APL Valve Bypass Switch (optional) (not available in US) Expiratory non-return valve Canister Bag connection Patient expiratory connector (22mm/0.8” male and 15mm/0.5” female taper Oxygen sensor port and oxygen sensor port blanking plug Patient inspiratory connector (22mm/0.8” male and 15mm/0.5” female taper Inspiratory non-return valve Bag/vent Switch Manometer gauge Fresh Gas Port APL Exhaust Port
N
Vent port
G H
Without Bypass
Figure 6 - CAS Absorber BleaseGenius MRI User Manual
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Chapter 4
4.5
Installing an Absorber
The absorber is mounted onto a fixed bracket. 4.5.1
Connecting the Breathing System
Connect the anesthetic machine to the absorber. See Figure 6. 1. A 22mm connector is used to attach the fresh gas tube from the common gas outlet on the BleaseGenius, the other end of the tube is connected to the fresh gas port on the absorber using a fresh gas adaptor. 2. Connect the other end of the fresh gas supply to the fitting L labeled “Fresh Gas” on the absorber. 3. Connect a patient breathing system to the absorber F & H. 4. Attach a patient breathing bag to the absorber E.
4.6
Installing the Bellows 1. Remove the bellows housing by twisting it gently anti-clockwise until the bayonet tabs are free, then lift it from the base. 2. Mount the bellows. 3. Push the bellows housing down over the bellows, then twist it gently clockwise to engage the bayonet tabs. WARNING: At pressures above 10cmH2O differential positive pressure, the bellows may be dislodged from the mounting ring, resulting in a dangerous malfunction of the ventilator. Do not exceed the stated pressure.
4.7
Installing Suction Units Part Numbers: 11400045 High 11400047 Venturi
The suction units consist of two units: a suction controller and a receiver jar. The suction unit can be mounted one of the upper V brackets and the receiver jar can be mounted one of the lower V brackets.
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BleaseGenius MRI User Manual
Chapter 4 1. Position the suction controller so that its gauge faces the front of the machine and its V bracket adaptor is aligned with the V bracket on the machine. 2. Push down the controller so that the V bracket adaptor mates with the machine’s V bracket. 3. On non-venturi types, plug the controller vacuum probe into a suitable vacuum source. For venturi types, fit the mini-Schräder probe connection of the venturi pipeline to an auxiliary outlet on the anesthetic machine. 4. Align the receiver jar V piece with the V bracket and push the receiver jar downwards so that the V piece mates with the V bracket. WARNING: Note there is no locking or securing mechanism.
5. Couple the suction controller hose to the connection on the receiver jar. 6. Refer to the suction unit manual for Cannula fitting, and operating instructions for the suction unit.
4.8
Installing Ancillary Equipment
Ancillary equipment such as drip sets, sphygmomanometers and hose hooks etc can be mounted in the four mounting blocks or the three V brackets on the sides of the machine. The mounting blocks each have two 6.5mm diameter holes into which the hooks or sphygmomanometer posts can be fitted. The equipment is secured in place by locking screws. Ancillary equipment which may need pneumatic power or an oxygen supply (ventilators etc) should have their supply hoses plugged into the pneumatic outlet on the machine. All machines have an oxygen power outlet.
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Chapter 4 WARNING: Note the oxygen power outlet is not switched on or off by the machine’s On/Off switch.
The equipment hose probe should be a mini-Schräder and should be pushed into the outlet port. The port is self-locking and will hold the probe in position. Pull the mini-Schräder outlet port shroud outwards to release the equipment probe.
4.9
Post-Installation Check
When the system has been installed the full system check should be carried out (See Chapter 8 Full System Test).
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Chapter 5
BleaseGenius MRI Anesthesia System
Chapter 5
Operation
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Chapter 5 B T H
S L
M G N K A D J
P
W
Frame Pneumatic unit Hypoxic guard Cylinder/pipeline gauges Flowblock assemblies Oxygen flush Cylinder Reg Box
A B D F G H J
F K L M N P T W
Flow control knobs Backbar Vaporizer Common gas outlet Main On/Off switch Oxygen monitor N2O/Air selector switch
Figure 7 - BleaseGenius MRI Components 46
BleaseGenius MRI User Manual
Chapter 5
5.1
General
Refer to Figure 7 (previous page) as you read this section. The gas supply inputs consist of the cylinder yokes that couple and secure the gas cylinders to the machine and its pneumatics, and the pipe line inlets. All the gas input connections are gas-specific, the cylinder yokes are pin indexed and the pipeline inlets are non-interchangeable screw threads (NIST) (DISS on ANSI-specification machines). The pneumatics that regulate the gas supply pressures consist of high pressure regulators to reduce the cylinder gas pressures and non-return valves to ensure that gases do not flow from one inlet to another. Each cylinder yoke and pipeline inlet has an associated pressure gauge F located on the front of the machine. The cylinder contents gauges are mounted centrally at the bottom and the pipeline pressure gauges are located above these to the right of the N2O/Air switch. The sequence of the cylinder gauges is the same as that of the cylinder yokes. The regulated gases are coupled to their flow control valves K via the oxygen failure warning device. The oxygen failure warning device monitors the pressure of the oxygen supply. If the oxygen supply pressure falls below 32.7psi / 225kPa all the gases (except oxygen) will be cut off and the pneumatic audible alarm will be activated. The gases flow from the pneumatic logic valves through the flow control valves and their flowblock assemblies G. Each gas has an associated flow control valve K and flowblock assembly. The flow control valve knobs are turned counter-clockwise to increase the gas flow and clockwise to reduce it. All the gases can be turned off by turning the knobs fully clockwise save for the oxygen control which has a minimum (basal) flow of 220 to 280ml per minute. To turn off the oxygen, the On/Off switch P at the front of the machine must be used. The valves are independent of each other except for the mechanical hypoxic guard which links the oxygen and nitrous oxide flow controls together such that the ratio of oxygen to nitrous oxide is not less than 21%. An air-nitrous oxide interlock switch W selects one of the two gases prior to the flow control valves. BleaseGenius MRI User Manual
47
Chapter 5 Gases flow from the flow control valves to the vaporizer M (if fitted) and then to the common gas outlet N located on the top right hand side of the machine. The common gas outlet has a male 22mm/15mm female taper. The oxygen flush control H is located on the front, top right of the machine and connects the regulated or pipeline oxygen supply directly to the common gas outlet when it is operated. The control is pressed in to supply oxygen. The On/Off switch P is located on the front of the machine to the left of the N2O/ Air selector switch and is used to turn all the gases of the machine on or off (except the supply to the oxygen flush control and the oxygen power outlet). The switch is turned clockwise to turn the machine on and counter-clockwise to turn it off. The interlock switch W is used to select either Nitrous oxide or Air. WARNING: In order to minimize the possibility of running the oxygen supply cylinders down it is recommended that the machine be switched off when it is not in use
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BleaseGenius MRI User Manual
Chapter 5
Key A B C E F H L N Q R S T
O2 power outlet O2 pipeline O2 cylinder yoke N2O pipeline N2O cylinder Air pipeline Air relay On/Off switch Oxygen failure alarm Reservoir N2O relay O2 flush
U V W X Y Z AA CC DD
Flowblock assemblies (O2, N2O, Air) O2 Secondary regulator for hypoxic protection system N2O Secondary regulator for hypoxic protection system Vaporizer mounting Over pressure protection relief valve Entrainment valve Common gas outlet (22mm) Hypoxic protection link system Air/N2O interlock switch
Figure 8 - BleaseGenius MRI Pneumatic Circuit BleaseGenius MRI User Manual
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Chapter 5
5.2
Oxygen System and Oxygen Failure Warning Device
Refer to Figure 8 BleaseGenius MRI Pneumatic Circuit. Oxygen is conducted from the oxygen yoke block C to the high pressure oxygen regulator input and cylinder contents gauge which indicates the cylinder pressure. The regulator reduces and regulates the pressure to a nominal 359kPa. The outlet of each regulator is coupled by a non-return valve to a common oxygen supply line. The cylinder regulator pressure is deliberately set low to give preference to the pipeline supply. Oxygen may also be conducted from the oxygen pipeline input B to its pipeline pressure gauge, which indicates the pipeline pressure, and through a non-return valve to the common oxygen supply line. The common oxygen supply line is connected directly to the input of the On/ Off switch N, the oxygen flush control T, and the input of the oxygen auxiliary power outlet A. The output of the On/Off switch N is connected to: • the input of the oxygen failure warning device Q; • the input to the secondary oxygen regulator V for the mechanical hypoxic guard. Each of the gases except oxygen have their outputs controlled by a cutout valve. The purpose of the cutouts is to shut the gases off if the oxygen supply pressure falls below 32.7psi / 225kPa. The cutoff system also activates the oxygen failure warning device Q, which produces a warning signal in the form of a whistle when the oxygen supply pressure falls below 32.7psi / 225kPa. It has its own reservoir R to ensure that the warning signal lasts for at least 8 seconds. When the On/Off switch N is turned On, oxygen is supplied to the oxygen flow control (via the secondary regulator V), the oxygen failure warning device Q and the control inputs of the other gases’ cutouts L and S. The oxygen failure warning device Q will give a momentary whistle as its reservoir pressure builds up, and the gas cutouts will switch over and allow the other gases to reach their respective flowblock assemblies. 50
BleaseGenius MRI User Manual