Viasys Bear Cub 750 Ventilator

A ventilator is a respiratory device that pumps air into the lungs of people who are unable to breathe on their own. The Bear Cub 750 is a ventilator specifically for infants and small children weighing up to 66lbs (30kg). It was produced from 2003 to 2004 by Viasys Healthcare, Inc., which was acquired by Cardinal Health in 2007. The device was intended for use across the US and Britain and has had no recalls or notable press attention. The cost of the ventilator was around the range of $3,000-$5,000.

There are three different ventilation modes: assisted control, SIMV/IMV, and CPAP. The 750vs has integrated synchronized ventilation and tidal volume monitoring, as well as includes independent base and inspiratory flows. It has an internal battery backup. There are no known common failures, but after continued use the exhalation valve and flow sensor may need to be replaced.

You can identify the Viasys Bear Cub Ventilator by its appearance: its color is predominantly white, with some gray over the sections containing the adjusting knobs. In the top left corner in blue is the brand “Viasys” and on the right in gray is “Bear Cub 750 infant ventilator.” There are three different color sections of lights (from top to bottom): yellow, red, and green.

• Integrated Synchronized Ventilation
• Tidal Volume Monitoring
• Independent Base & Inspiratory Flows
• Internal Battery Back-Up
• Exclusive Volume Limit
• Assist Control
• Flow Cycled AC
• SIMV/IMV
• Flow Cycled SIMV
• CPAP
• SIMV with Pressure Support
• Pneumatic Ventilator
• Gas Inlet Conditioning
• Accurate blending of gases in the O2 blender
• Flow Control Valve
• Auxiliary Gas Outlet
• Pressure Control System
• Flow Sensor

Ventilator Dimensions

• Height: 11 in
• Width: 13.5 in
• Depth: 10 in

Compressor Dimensions

• Height: 36 in
• Width: 22 in
• Depth: 21.5 in
• Weight: 110 lbs.

Controls

• Mode: AC, Flow cycle AC, SIMV/IMV, Flow Cycled SIMV, SIMV/PSV, PSV, CPAP
• Ventilator Rate: 1.0 to 150 BPM
• Inspiratory Time: 0.1 to 3.0 sec.
• Inspiratory Flow: 1.0 to 30 LPM
• Base Flow: 1.0 to 30 LPM
• Volume Limit: 5.0 to 300 ml
• PEEP: 0 to 30 cmH2O
• Inspiratory Pressure: 0 to 72 cmH2O
• Manual Breath: x One
• Assist Sensitivity: 0.2 to 5.0 LPM; Minimum to Maximum bar
• Over Pressure Relief: 15 to 75 cmH2O
• % O2: 21 to 100%
• Alarm Loudness: Min 60 to Max. 75 dbA
• Audible Off Volume Limit: LED On/Off

Alarms

• High Breath Rate: 3.0 to 255 BPM
• Low PEEP/CPAP: -5.0 to 30 cmH2O
• Low Inspiratory Pressure (vs): 1.0 to 65 cmH2O
• Low Inspiratory Pressure (psv): 5 to 41 cmH2O (derived from High Pressure Limit and Low PEEP/CPAP Alarm Settings
• Patient Circuit: LED On/Off
• Failed to Cycle: LED On/Off
• Low Gas Supply: LED On/Off
• Apnea Alarm: 5, 10, 20, 30 sec
• Settings Incompatible: LED On/Off
• Pressure Settings Incompatible: LED On/Off
• Prolonged Inspiratory Pressure: LED On/Off
• Flow Sensor: LED On/Off
• Low Battery: LED On/Off
• Alarm Silence: 60 sec
• Visual Reset: Push Button
• High Pressure Limit: 10 to 75 cmH2O
• Low Minute Volume: Off to 99 lpm

Monitors

• PEEP: 0 to 30 cmH2O
• Breath Rate: 0 to 255 BPM
• Breath Type (Patient Initiated): LED
• Minute Volume: 0 to 30.0 LPM
• Tidal Volume (Exhaled): 0 to 500 ml
• % Tube Leak: 0 to 100%
• Inspiratory Time: 0.1 to 3.10 sec Expiratory Time 9 to 99.9 sec
• I:E Ratio: 9.9:1 to 1:9.9
• Peak Inspiratory Pressure: 0 to 99 cmH2O
• Mean Airway Pressure: 0 to 75 cmH2O
• Air Pressure: 0 to 100 psig; 0 to 99 psig
• O2 Pressure: 0 to 100 psig; 0 to 99 psig
• Proximal Airway Pressure: -10 to 100 cmH2O
• Hour meter: 0 to 99,999 hours
• Test: Push Button
• Line Power: Green/Red LED
• Battery: LED On/Off
• Inspired Tidal Volume: 0 to 500 ml

Limits

• Minimum Expiratory Time: 0.15 seconds
• Maximum Inspiratory Time: 3:10 seconds
• Maximum settable I:E Ratio: 4:1

Monitors

• Breath Rate: ± 1 BPM or ± 20 msec, whichever is greater
• Inspiratory Time: ± 0.02 sec
• Expiratory Time: ± 0.02 sec
• I:E Ratio: ± 0.1 or ± 20 msec (on the calculation based on the monitored inspiratory and expiratory times), whichever is greater
• Airway Pressure (Continuous):
  ± 1 cmH2O (-10 to 20 cmH2O)
  ± 2 cmH2O (20 to 65 cmH2O)
  ± 3 cmH2O (65 to 100 cmH2O)
• Peak Inspiratory Pressure: ± 2 cmH2O or ± 5%, whichever is greater
• Mean Airway Pressure: ± 2 cmH2O or ± 3%, whichever is greater
• PEEP: ± 2 cmH2O or ± 5%, whichever is greater
• Air/O2 Pressure: ± 5 psig
• Minute Volume Accuracy: Based on the Tidal Volume and Breath Rate Monitors
• Inspiratory Tidal Volume: ± 1 ml or ± 10%, whichever is greater
• Expiratory Tidal Volume: ± 1 ml or ± 10%, whichever is greater
• % Leak: ± 1 ml or ± 2%, whichever is greater
  (when compared to the Inspired and Expired Tidal Volume Monitors)
• Hour Meter: ± 2% of reading

Alarms and Limits

• Low PEEP/CPAP: ± 2 cmH2O
• High Breath Rate: ± 1 BPM
• Low Minute Volume:
  ± 10 ml/min (0 to 99 ml/min)
  ± 0.1 L/min (0.1 to 9.9 L/min)
• High Pressure Limit: ± 4 cmH2O
• Prolonged Inspiratory Pressure: ± 2 cmH2O
• Volume Limit: ± 2 ml or ±  10% of setting, whichever is greater
• Apnea: ± 1 sec
• Maximum (Pop-off) Pressure: ± 4 cmH2O

Controls

• Ventilator Rate: ± 1 BPM or ± 20 msec (applied to the breath interval), whichever is greater
• Inspiratory Rate:
  ± 0.020 sec (0.10 to 0.50 sec)
  ± 0.025 sec (0.50 to 3.00 sec)
• Assist Sensitivity: Not a calibrated scale
• PEEP/CPAP and Inspiratory: ± 1 cmH2O or ±  5%, whichever is greater (breath to breath)
• Base/Inspiratory Flow: ± 0.5 LPM or ± 10% of setting, whichever is greater (0 to 60 cmH2O)
• Oxygen %: ± 3%
• Degree of Safety in Presence of Flammable Anesthetics: None
• Mode of Operation: Continuous

Sources: Outfront Medical and Soma Technology

Purchase Viasys Bear Cub 750PSV Ventilator from Outfront Medical and Gumbo Medical.

Purchase Viasys Bear Cub 750PSV Maintenance Kit from HospiVent.

Viasys Healthcare is now part of Cardinal Health.