MRI-1 Ventilator

Reference: MRI-1

Small animal ventilator designed for use in MRI and sensitive electrophysiology recording situations

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The MRI-1 ventilator is a small animal ventilator designed for use in MRI and other high magnetic field environments. The non-electrical nature of the ventilation valves allows this unit to be particularly well suited to sensitive electrophysiology recording situations.

It consists of a microprocessor-based control unit and a set of remote, pneumatically operated, non-metallic valves. It can operate by itself or be contolled and/or monitored by a computer.

The MRI-1 is a volume-cycled ventilator only. It does not measure airway pressure or use pressure to control ventilation. It operates on the flow-time principle: an inspiratory airflow is established and gated into the animal for a set time, thus producing a known volume. This solution provides extraordinary flexibility: a wide range of volumes, breaths-per-minute, and I/E ratios are possible with no hardware changes, and using just 3 front-panel controls. Respiratory airflow is provided by an internal airpump or an external pressurized gas source (oxygen or anesthetic gas).

MRI-1

Data sheet

Dimensions
23 x 14 x 23 cm
Power supply
120/240V (switchable), 100VA
Animal
Mice to guinea pig size
Respiratory rate range
5-200 breaths/min
Tidal volume range
0.1-30 ml
Inspiratory flow range
60-1000 ml/min
Inspiration / expiration range (% Insp)
20-80%
Internal air pump capacity
4 lpm

 

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