Ventilator Orpheus is used for surgical operations under General anesthesia, in intensive care and life support to patients with critical disorders of respiratory function. The apparatus carries out artificial respiration and supply of anaesthesia for open and closed breathing circuit by controlling the pressure and oxygen content in the gas mixture, as well as providing accurate flow anesthesia.

ventilator "Orpheus" provides след0ующие modes of breathing:

• VCV - controlled mechanical ventilation with a control volume
• PCV - controlled artificial ventilation with pressure control
• A/C + VCV - auxiliary-controlled mechanical ventilation with a control volume
• A/C + PCV - auxiliary-controlled artificial ventilation with pressure control
• SPONT - spontaneous breathing through the circuit of the device
• MV - manual ventilation

Structurally we can distinguish the following functional subsystems:

the
• pneumatic system consisting of asynchronous ;
• brushless BLDC motor drive, discharge fur and
• auxiliary mechanics;
• Electromechanical system controlled valves;
• sensors;
• controller

Equipment placed in the body. The volume, composition, pressure and quantity of supplied gas mixture is determined in accordance with the values system of sensors and gauges. The ventilator "Orpheus" provides the following sensors:

• two sensors breath
• sensor oxygen
• two sensors of the pressure control circuit
• valves positive end expiratory pressure (peep)

the phone has a combined management system (climatic and software). The introduction of additional feedbacks in the control of the Executive subsystems have allowed to achieve high accuracy of outlet pressure, volume of the issuing gas mixture and stability. To improve accuracy was used Electromechanical drive with high-precision control of shaft speed, a system of compensation of the systematic and accumulated errors.

To construct the device with a pneumatic system for pressurizing the gas mixture, the control system and interface interaction. To provide stable operation of the equipment within 72 hours taking into account possible emergency situations (power loss, unauthorized access, etc.).

System software should provide the following functions:

- the control of pressure in the pneumatic system, quantity of gas mixture directed to the patient and after exhalation

- output charts of flow, volume and pressure

- manage of incoming gases

- informing user about power status and willingness to work.

- audible and visual indication

- graphical interface with touch screen

- ability to set modes, thresholds of maximum pressure, respiratory rate, ratio of inhalation and exhalation, etc.

- emergency and light alarm in case of depressurization, the release of the figures for the limits set, the cutting of power supply, unauthorized changes to variables, etc.

IVL "Orpheus" has the following functions:

• pressure control in the pneumatic system, quantity of gas mixture directed to the patient and exhalation
• combined control system
• output charts of flow, volume and pressure
• management of incoming gases
• informing the user about power status and readiness
• audible and visual indication
• graphical interface with touch screen
• ability to set thresholds of maximum pressure, respiratory rate, ratio of inhalation and exhalation, etc.
• alarm and light alarm in case of depressurization, the exit of indicators of range, power is lost, unauthorized changes to variables, etc.
• to switch to manual control mode in case of disconnection of external power
• automatic switching to backup sources in case of disconnection of external power
• maintain a functioning failure in the management interface