Background
The MR850 Respiratory Humidifier is used to warm and humidify gases delivered to patients requiring mechanical ventilation, positive pressure breathing assistance, or other medical gases. The MR850 is adaptable to be used for therapies for adults, pediatric, and neonatal. Device is outfitted with automated flow sensor technology that places the device in standby during periods of gas flow interruption. This device is most commony attached directly to the ventilator so it can be plumbed in line with the hoses running to the patient. It can also be pole mounted for use in non ventilated patient uses such as humidifed nasal canula and non-rebreather.
There are no known recalls for this device.
There are various software revisions. To determine the software version, enter diagnostic mode by pressing the mute and mode buttons together for 1 second, the diagnostic menu is entered, indicated by the display of two rows of dashes ‘= = =’. Releasing both buttons will allow the diagnostic menu to cycle automatically through the menu, pausing at each function. Pressing the mute button at this time will display the value behind each function for as long as the mute button is held. Scorll through the menu until the letter SoF appear, that will indicate your software version.
Identification
The MR 850 is manufactured under both the Fisher & Paykel name as well as the Dräger name. The body of the device is a light gray color with a blue retention lip to keep the chamber in place. It has a 3 digit display that primarily displays the temperature in celsius. The display will display different symbols when a button is depressed to indicate settings changes.
Technical Specifications
Dimensions: 140 mm x 173 mm x 135 mm (without chamber fitted)
Weight: 2.8 kg (without chamber fitted) 3.1 kg (chamber fitted and filled with water)
Mains Supply: 115 V~, 60 Hz
Rated Power: 220 VA
Heater-plate Output: 150 W
Heater-wire Output: 22 V~, 2.73 A, 60 W
Essential Performance: Delivery of specified humidification output or generation of an alarm condition
Temperature Display Range: 10 – 70 °C
Gas Temperature Measurement Accuracy: ± 2 °C (Temperature Probe Accuracy: ± 0.3 °C, in 25 – 45 °C range)
Software Version: Refer to MR850 Technical Manual (Located in attached documents)
Alarm Sound Pressure Level: > 50 dBA at 1 m
Audio Information Signal: Single beep or double beep
Maximum Operating Pressure: Refer to chamber and breathing circuit specifications
Service Life: 7 years
Recommended Environmental Conditions
Ambient temperature: 18 – 26 °C (64.4 – 78.8 °F)
Ambient humidity: 10 – 95% RH
Ambient pressure: 700 – 1060 hPa