HSE-Harvard MiniVent Ventilator for Mice
New Look Ventilator, featuring:
- Ideal ventilator for mice
- Stroke volume range from 30 to 350 µl
- Ventilation rate from 60 to 400 strokes/minute
- Simple adjustment of stroke volume while running
- Valveless piston pump, no valves to clog
- Very small instrument / circuit dead space volume
- Compact construction,easy to install close to animal
- No vibrations, very low noise
The newly developed MiniVent Model 845 ventilator
is a quiet, compact and light weight ventilator designed specifically
for mice. It is designed specifically for mice but can be used
for any animal (e.g. birds and perinatal rats) which requires
tidal volumes in tbe range of 30 to 350 µl and respiratory
rates of 80 to 400 breaths per minute. The unit is compact and
light weight, just 1 kg (2.2 lbs)!
The MiniVent Ventilator is a compact, constant-volume respiration
pump operating on the Starling principle. Unlike conventional
units for larger animals, this ventilator employs a rotary plunger
and has no valves. During each ventilation cycle the plunger
performs a synchronized forward and rotating movement. Cleverly
arranged bores and channels in the cylinder and plunger control
inspiration and expiration during each stroke of the plunger.
The extremely compact construction, light weight and convenient
rod clamp allow the MiniVent ventilator to be positioned directly
next to the animal. Typical setups with larger ventilators produce
large tubing and instrument dead space volumes. These larger
volumes introduce greater system compliance which can affect
the accuracy with which the full tidal volume is introduced into
the animals lungs. With the MiniVent, the tidal volume error
due to system compliance is reduced to +/- 3 µl.
Tidal volume and respiration rate can be set exactly to the values
required for mouse ventilation. The precision and control of
tidal volume and respiratory rate that the investigator has minimizes
the danger of hyperventilation or hypoventilation.
The tidal volume can be varied continuously from 30 to 350 µl
during operation without having to interrupt ventilation. The
respiration rate is also continuously adjustable from 60 to 400
strokes/min. The expired air can be recovered at the collection
port for sampling, recycling or for the generation of a positive
end-expiratory pressure (PEFP). Room air or any non-explosive
gas mixture can be used to feed the pump intake.
TECHNICAL DATA
| stroke volume | continuously adjustable from 30 to 350 µl |
| ventilation rate | Continuously adiustable from 60 to 400 strokes/min |
| power | 12 V DC, 0.5A through external mains adapter |
| dimensions, H x W x D | 8 x l0 x 20cm (3.2 x 3.9 x 7.9 in) |
| weight MiniVent | 1kg (2.2 lb) |
| weight AC Adapter | 0.3 kg (0.7 lb) |
