Medivent Gold

Intensive Care Ventilator

It is an advanced ventilator with features to provide efficient respiratory support to critically ill patients. The concept of breath to breath correction is remarkable for accurate delivery of tidal volume. Automatic change-over between controlled and support ventilation corresponding to breathing pattern is also noteworthy. Highly sensitive sensing devices ensure better synchrony with the patient. The addition of NIV makes the ventilator very versatile.

Features

12.1 inch coloured TFT display

Monitoring of patient data

PT FT and VT curves

PV and FV loops

Advanced mode of operation

The ventilator offers several control and support modes along with their combinations. There is a choice of interactive mode also where control and support modes can be switched automatically. This is helpful when the patient has insufficient spontaneous activity and immediate switching to corresponding control mode is desired to sustain life.

It also provides non- invasive ventilation (NIV) as well, to avoid complications associated with the invasive ventilation.

Finally, the ventilator has Airway Pressure Release Ventilation (APRV) which maintains a CPAP for a longer duration to recruit the alveoli and optimize oxygenation. The CPAP is released for a very short duration to wash out CO2 intermittently. It is essentially a pressure control mode and works with strategy of IRV. The mode is relevant for patients with acute lung injury/ARDS.

Pressure & flow triggering

The breathing effort of the patient can be detected by fall in pressure or the flow of gas towards the patient. On detection of either these phenomena, the ventilator initiates the mechanical breath. The triggering is very effective as either of the two factors are considered, instead of only one.

Servo controlled oxygen blender

Blending of air and oxygen is done by precise regulation of the flow of gases with the help of advanced proportional valves. The controller does it depending on the closed feedback provided by the oxygen sensor. The closed feedback makes the blending accurate although outflow may vary widely.

NIV facility

NIV is preferred at times to avoid the complications associated with intubation. It is so designed to provide the desired inspiratory and expiratory pressure levels called IPAP & EPAP to support the ventilatory demand of the patient.

The cycling between IPAP and EPAP follows the patient’s breathing pattern and provides patient-ventilator synchrony. It reduces the Work of Breathing (WOB).

Specific masks are used for the purpose to maintain the NIV. The Apnea Backup Ventilation is active in this mode.

The role of NIV to treat cases of Sleep Apnea is noteworthy.

Breath-to-breath correction

The actual tidal volume delivered by a mechanical breath also varies with changes in lung characteristics. To nullify this effect, the unit applies ‘Breath-to-Breath’ correction. The process involves monitoring each mechanical breath and providing the appropriate variation in tidal volume subsequently so that overall desired ventilation is maintained.

Benefits: Ensures adequate ventilation despite changes in lung characteristics. Ventilating an obese or a patient in prone position is easy to perform.

Automatic O₂ cell calibration

Calibration of oxygen cell is desired for monitoring FiO₂ correctly, as the cell gets affected with continuous exposer to oxygen. The ventilator thus performs the required calibration at the very start. However, the operator has the option to skip.

Quick start facility

This is an option for the operator to start the ventilator with default settings depending on ideal body weight. It helps the operator not to divert its attention from the critical patient. However the set parameters can be modified conveniently later.

Auto change-over of driving gas

Dual gas source of oxygen and air is required for driving the ventilator. However it is designed to continue ventilation even in case of failure of either of the gases. To maintain the optimum ventilation, the available gas takes over the failed gas. The lack of proper air/oxygen mixing, the FiO₂ remains affected till the failed gas is restored.

Battery back-up

The backup has been provided for running the ventilator in the event of sudden failure of electricity. However, it is not applicable to run accessories like air compressor or humidifier. Backup of 5 hours approximately is available using a Lithium ion battery.

Option of integrated air compressor

The compressor is an optional accessory. It may be integrated mounting the ventilator on it. The compressor then works as the mobile trolley for the ventilator.

The compressor runs continuously for suppling oil-free air @ 40-50 lpm at 50 psi. It uses a device based on Peltier effect for making the outflow dry. This helps avoiding damage to the critical valves sensitive to moisture.