CWE SAR-1000 Instruction Manual
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CWE SAR-1000 Instruction Manual

Advanced small animal ventilator
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Instruction Manual
SAR-1000
Advanced Small Animal Ventilator
Read instructions carefully before operating this device.
 This device is not to be used for Human Life Support applications.
 To avoid possible electrical shock, do not operate this device if is wet or has had liquids spilled onto it.
 Service or calibration procedures should only be performed by qualified personnel familiar with the
electrical hazards of line-powered devices.
Ardmore PA 19003 U.S.A.
(610)642-7719
info@cwe-inc.com
©CWE 2023
www.cwe-inc.com

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  • Page 1 Instruction Manual SAR-1000 Advanced Small Animal Ventilator Read instructions carefully before operating this device.  This device is not to be used for Human Life Support applications.  To avoid possible electrical shock, do not operate this device if is wet or has had liquids spilled onto it.
  • Page 2 STATEMENT OF WARRANTY IF THIS INSTRUMENT FAILS WITHIN A PERIOD OF ONE YEAR FROM THE DATE OF DELIVERY OR INSTALLATION, CWE, INC. WILL, AT ITS OPTION, REPAIR OR REPLACE IT FREE OF CHARGE. THIS WARRANTY EXCLUDES DAMAGE INCURRED THROUGH MISUSE OR ACCIDENT. CWE, INC. DOES NOT ASSUME ANY LIABILITY FOR ANY CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THIS INSTRUMENT.

  • Page 3: Table Of Contents

    4.0 TUBING CONNECTIONS ..................9 5.0 REAR PANEL INPUTS AND OUTPUTS ..............10 6.0 REMOTE CONTROL USING THE USB PORT ............13 7.0 USING ANESTHESIA WITH THE SAR-1000 ............15 8.0 SPECIFICATIONS ....................17 9.0 ORDERING INFORMATION ..................17 Figure 1: Model SAR-1000 Front Panel ............... 4 Figure 2: SAR-1000 LCD Display Panel ...............

  • Page 4: Introduction

    Special sigh breaths can be manually initiated or programmed to occur automatically at user determined intervals. The SAR-1000 is completely self-contained, with a built-in air pump to provide airflow. All settings are made from the front panel and are displayed on an LCD display along with computed measurements.

  • Page 5: Basic Ventilator Connections

    SAR-1000 Instruction Manual 2.0 BASIC VENTILATOR CONNECTIONS Setting up the SAR-1000 is straightforward. For basic operation, only a mains power cord and a cannula tubing set need be connected. Power connections Plug an appropriate mains cord into the receptacle on the right of the rear MAINS INLET panel.

  • Page 6: Ventilator Operation

    10.0 cm. Now, inspiratory flow will cease on each breath when the set P pressure is reached. Inspiratory hold Note that the SAR-1000 has another important feature that applies to pressure mode: If is reached before the set T has elapsed, the lung volume will be clamped for the duration of T .
  • Page 7 Manual Sigh function Sighs, or periodic delivery of larger tidal volumes, are often used to maintain good lung ventilation and gas exchange. The SAR-1000 has a manual sigh function actuated by pressing the pushbutton. When this pushbutton is pressed, the ventilator is armed SIGH to deliver a sigh breath on the next inspiration.
  • Page 8 SAR-1000 Instruction Manual pushbuttons and holding for about ½ second. The setup screen shown in SET SIGH PRES Figure 4 will then be displayed: Figure 4: Auto-Sigh setup screen The two settings you can change here are the sigh frequency and sigh ratio values. In the example shown, sigh frequency is set to 1:050, or a sigh every 50 normal breaths.

  • Page 9: Tubing Connections

    Figure 5: SAR-1000 Rear Panel Pump In / Pump Out ports The SAR-1000 is equipped with an internal air pump to provide compressed gas for use as the inspiratory flow. The inlet and outlet connections of this pump are brought out to the rear panel as the ports, respectively.

  • Page 10: Rear Panel Inputs And Outputs

    SAR-1000 Instruction Manual Expired Air port port is connected directly to the lungs during expiration. In most cases, this EXP AIR port should be left unconnected. However, there are some circumstances where a connection is made: PEEP (Positive End-Expiratory Pressure) --- PEEP is a commonly used technique to maintain a small pressure in the lungs during expiration.
  • Page 11 I/O capabilities, it is possible to create a ventilator system with many possibilities, such as constant-CO operation, neural-controlled ventilation, ventilation synchronized to MRI or CT scanners, etc. If this is of interest, please contact CWE, Inc. for details. © 2023 CWE, Inc.
  • Page 12 Figure 6: Connecting an external valve set It is also possible to ventilate up to four rodents simultaneously with just one SAR-1000 as the control unit. The valve assemblies will all operate synchronously, but individual tidal volumes can be adjusted independently by varying the flow rate to each animal.

  • Page 13: Remote Control Using The Usb Port

    CDM20600.EXE. This program will install Virtual Com Port (VCP) drivers, creating a new serial port connection on your computer (for example, COM5). Connect the USB cable and power on the SAR-1000. Locate the new COM port by: Start / Control Panel / System / Hardware / Device Manager / Ports.
  • Page 14 SAR-1000 Instruction Manual Multiple settings commands GS – Sends a full set of machine settings back to host computer in the format: aaa,bbbb,ccc,ddd,ee,fff,ggg where: aaa = Respiratory Rate bbbb = Inspiratory Flow ccc = Pressure Limit ddd = Sigh Pressure...

  • Page 15: Using Anesthesia With The Sar-1000

    SAR-1000 Instruction Manual 7.0 USING ANESTHESIA WITH THE SAR-1000 The SAR-1000 Ventilator can be used with Isoflurane or other inhalational anesthetic systems. Figure 7 shows how to do this. Principle of operation The preferred method of interfacing an anesthesia machine (gas source + vaporizer) to the ventilator is by using a blow-by system, as shown.
  • Page 16 SAR-1000 Instruction Manual Figure 7: SAR-1000 anesthesia connections with optional PEEP. © 2023 CWE, Inc.

  • Page 17: Specifications

    SAR-1000 Instruction Manual 8.0 SPECIFICATIONS Respiratory rate range ................5 - 200 breaths/min Inspiratory flow range .................. 10 - 1100ml/min Inspiration/Expiration (I/E ratio) range ..............10 - 90% Tidal volume range (see Note 1) ................0.1 - 30ml LCD panel ..................4 lines x 20 chars, backlit Indicator lights .................

  • Page 18: Appendix 1: Tidal Volume Vs. Body Weight Charts

    SAR-1000 Instruction Manual APPENDIX 1: TIDAL VOLUME VS. BODY WEIGHT CHARTS Tidal Volume Chart Breaths per minute 40 50 300 400 500 1000 Body Weight (g) Tidal Volume Chart 1000 Breaths per minute 5 6 7 8 9 40 50 Body Weight (kg) ©...

  • Page 19: Appendix 2: Typical Ventilator Settings For Rodents

    SAR-1000 Instruction Manual APPENDIX 2: TYPICAL VENTILATOR SETTINGS FOR RODENTS Body Tidal Resp Insp Weight Volume Rate Flow Ratio (ml) (br/min) (ml/min) 0.25 0.90 1.80 2.40 4.00 Note: Settings above are suggested guidelines. You will probably need to adjust the settings for your particular animal, depending on its condition, anesthesia, or other factors.

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