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Shandong Medfar Medical Instruments Import and Export Co., Ltd.

Medical Trolley Ventilator manufacturer / supplier in China, offering Hospital Equipment Protable Ventilator, Mfj-Ym Series a Vertical Human Industrial Water Type Pressure Steam Sterilizer, Medfar Medical Centrifuge Mfl-3mc with CE and so on.

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Hospital Equipment Protable Ventilator

FOB Price: US $3,100 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $3,100/ Piece
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Production Capacity: 3000PCS/Year
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: MF-H-700A
  • Ventilation Capacity Per Minute: ≥18L
  • Ventilator Conformance: ≤3
  • Trademark: MEDFAR
  • Origin: Shandong
  • Tidal Volume Adjustment: 50~1500ml
  • Oxygen Concentration: 21%~100%
  • Respiratory Rate: 1~99/M
  • Specification: CE & ISO
Product Description

Product Name:Hospital Equipment Protable Ventilator MF-H-700
Intro:This paragraph ventilator for the multi-mode multi-function universal synchronous machine can be used to aid breathing and adjuvant therapy, the use of bright digital display technology, quick knob to set parameters, external single infrared sensor, a pressure trigger device with advanced heating humidifier, machine through the CE certification.

Pneumatic power control, microcomputer control
Operation control panel with clear LED display, easy to operate
High quality humidifier
High-quality pipeline, accessories, parts

Ventilator host:
Scope: adults, children
Drive: pneumatic power control
knob operation and touch key
Work: time to switch
Breathing Mode:IPPV, SIPPV, IMV, SIMV, PEEP, Manu, Sigh and so on;
Tidal Volume Adjustment:50~1200ml
Respiratory Rate:6~60/m
I/E ratio: 1: 1.5, 1:2.0, 1:2.5, 1:3 
(Ptr) Range:-0.4~1.0kPa
The upper pressure limit: 1 ~ 6KPa
PEEP: 0.1 ~ 1KPa
Oxygen Concentration:<45%
Transfer Time from Controlled to Assistant Respiration:6s
Air Flow Adjustment:1~12times /m
Sigh Volume:150% of tidal volume
Ventilation Capacity per Minute:≥18L
Maximum Safe Pressure:≤6.0kPa
Air supply range:280~600kPa
Monitoring parameters: tidal volume, minute ventilation, the total frequency, peak airway pressure, oxygen concentration, self-triggering
Alarm parameters: the lack of oxygen supply, airway pressure upper limit airway pressure limit, power, sustained pressure, asphyxia, low tidal volume, oxygen concentration, gas missing
Oxygen Consumption:≤1.5mPa change in pressure after 1-hour operation of oxygen cylinder of 12250kPa/40L.
Power supply: AC220V, 50Hz

Thermostat regulated
Automatic over-temperature power-off protection

3.3 Alarm System
The device alarm system provides high level and low level alarms. The principle for monitoring for pressure alarm is that a pressure sensor measures and compares the current ventilator airway pressure with the set value in real time. The principle for monitoring for tidal volume and throughput alarms is that a flow sensor detects and compares the value measured by the ventilator with the set value in real time. The principle for monitoring for oxygen concentration is that a chemical reaction occurs in the oxygen to generate a voltage which will be acquired by the AD of the circuit and converted and such value is compared with the set value in real time. The principle for monitoring for frequency alarm is that the current ventilator operation frequency is calculated and compared with the set value by timing on ventilator CPU. The principle for monitoring for low battery voltage alarm is that the AD of the circuit acquires and detects whether the battery voltage is lower than 10.5V.
A list of alarms is presented as below:
List of Alarms
Alarm ItemAlarm LevelAlarm ConditionAlarm Form
Low gas source pressureHighThe gas source pressure drops to a level below 0.2MPa.
Upper airway pressure limitRange: 0.9 ~ 5.4 KP a, permissible deviation: ±20% (90% of set value)Immediate alarm; "high level alarm" indicator flickers raising an audible alarm.
Continuous positive pressureThe airway pressure exceeds 15hpa.The maximum delay is no longer than 17s. The "high level alarm" indicator flickers raising an audible alarm.
Low tidal volumeMediumLower than 50mlThe alarm will be raised after one breathing cycle. The "medium level alarm" indicator flickers raising an audible alarm.
Lower airway pressure limitThe airway pressure drops to 0.5KPa. The permissible deviation is ±0.2 KPa.The alarm will be raised after a delay of 4 to 15s. The "medium level alarm" indicator flickers raising an audible alarm.
Upper throughput limit
The throughput is higher than 18L/min.Immediate alarm. The "medium level alarm" indicator flickers raising an audible alarm.
Battery voltageThe battery voltage is lower than 10.5V.

When the "high and medium level alarm" indicators on the front panel of the ventilator flicker, this indicates that alarms are raised. You can press the Silence key to silence the alarm and press it again to disarm silencing.
If you need to query the alarm information, you can press and hold the Silence key for more than 3s and the ventilator can show the current alarm information on the throughput window. The symbol designation is as follows:
P upper limit   upper pressure alarm limit;
P lower limit   lower pressure alarm limit;
U upper limit    upper throughput alarm limit;
Po        low airway pressure alarm;
CP        High continuous pressure alarm
12.0       Battery voltage value
You can switch the information of the alarm currently occurring by pressing the Silence key. In case of no alarm, the battery voltage will be directly invoked. After the battery voltage is displayed, press the Silence key again to exit the previous status and display the throughput, or, the system will automatically exit the previous status and display the throughput if you do not press a key within 6s.
3.4 Battery
This ventilator is equipped with an internal backup power supply of the voltage 12V ± 10%, rated capacity 7Ah and maximum current 2A. The fully recharged battery can support the operation of this ventilator for a duration of no less than 30min. In case of a utility main failure, this ventilator can automatically switch to operate on the internal power supply.
3.5 Operating Noise Level
The noise level when this ventilator normally operates is no higher than 65 dB.
3.6 Safety Requirements
In accordance with the classification requirements in GB 9706.1-2007 Medical Electrical Devices Part 1: General Safety Requirements:
A)By electric shock protection type
--Type I device.
--Internal power supply device.
B)By degree of electric shock protection
--Type B application
C)By degree of protection against liquid intrusion
--Common (IPX0)
D)By operating mode
--Continuous operation.
E)This product is not equipped with an application part for protection against defibrillation and discharge effects.
F)This product is not equipped with signal output and input parts.
G)This product is a movable device.
H)This product is not explosive-proof and thus cannot be used in an environment with combustible and explosive anesthetic gases.
4.Installation and Commissioning
Caution: this ventilator should be installed, commissioned, inspected and used by professionals with certain qualifications to avoid unexpected faults or damages.
4.1 Preparations Prior to Installation
Confirm that this ventilator and its fittings are in complete and good condition free from damage during transportation and that contents of the packing box are consistent with the packing list. Keep properly the damping cushions in the packing box for use in another transportation.
Learn how to use the front and rear control panels of this ventilator . Check the position of the pointer of the pressure gauge. If the pointer is not at zero point, then adjust the zero point adjustment screw on the pressure gauge by using a screwdriver.
Check the medical compressed oxygen source and make sure that its pressure ranges from 280 to 600KPa and flow rate is 50L/min. If you supply oxygen with a cylinder, then you also need to check and make sure that the cylinder is sufficient of oxygen, and that the pressure reducer on the cylinder functions well and is correctly installed.
Check and make sure that the single-phase AC power supply used for this ventilator is of the AC 220V±10% voltage and securely grounded for protection and make sure that the emergency battery is already connected correctly.
Before the first use, you need to check whether the corresponding components are washed and disinfected following the method as specified in Section 8 of this user manual.
4.2 Installation and Pre-adjustment of Ventilator
1)Install the ventilator support holder onto the ventilator bracket and mount casters at four corners of the bracket base.
2)Connect the base plate of the ventilator on the support holder of the frame by using screws.
3)Install the battery box on the frame and connect the lead wires of the battery to the terminal screws on the rear panel of the ventilator.
4)Connect two gas guiding screw tubes to the inspiration outlet and expiration inlet of the ventilator respectively, connect the other ends of these tubes to a tee tube and connect that tee tube to a test lung.
5)Connect the pressure signal interface on the tee tube to the "pressure signal input interface" on the front panel of the ventilator circuit casing by using a tube.   
6)Install the flow sensor between the "expiration screw tube adapter" and screw tube and connect the output signal wire of the sensor to the "flow signal input interface" on the front panel of the ventilator circuit casing.
7)Turn the "tidal volume adjustment" knob to the middle position.
8)Set the IPPV frequency to 20times/min.
9)Set the "inspiration triggering pressure" to -0.2 kPa.
10)Set the airway pressure limit to 4.0kPa.
11)Connect the medical compressed oxygen source with a pressure ranging from 280 to 600kPa.
12)When the above adjustment is completed, you can connect the power supply of the ventilator.
4.3 Test Operation of Ventilator
After connecting the gas source and power supply of the ventilator and turning on the power to start up the ventilator, you should observe:
1)That the ventilator operates in the ventilation mode in which it is shut down previously.
2)Such parameters as "spontaneous breathing frequency", "overall respiratory rate", "throughput", etc. have to be displayed one minute after the startup as they are refreshed once every minute.
3)The indication of the airway pressure does not exceed 4.0kPa.
4)The expiration indicator and inspiration indicator flicker alternatively and you can hear the close-open sound of the solenoid valve in the ventilator. The frequency at which the solenoid valve closes and opens and the indicators flicker is the indicative value of the "control frequency". Also, you can see that the height of the water column in the test lung increases and decreases alternatively at the control frequency.
5) The indicative value of the tidal volume on the test lung is substantially the same as that of the "tidal volume" on the ventilator and relative error between both does not exceed ±20 %.
4.4 Inspection and Alarm
--Block the tee tube to increase the pressure in the airway and you should observe that the ventilator generates an audible-visual alarm signal when the airway pressure increases to the upper pressure limit.
--Cut off the oxygen supply from the oxygen cylinder for a normally operating ventilator and you should observe that the airway pressure indication drops. When the airway pressure indication drops to a level below the lower airway pressure limit, after a delay of 5 to 8s the ventilator generates an audible-visual alarm signal.
--A normally operating ventilator will raise a buzzing alarm when the power supply is interrupted.
--The duration of the inspection alarm sound should be no shorter than 120s.
--In case of an alarm, continuously press the jog dial twice and the alarm will be silenced. But, if the fault is not eliminated, the alarm buzz will sound again within a time no longer than 120s.
5.Use and Operation
5.1 Attention for Use
1)Prior to the use of this ventilator, you must check and read its use record and washing and disinfection record and make sure that it is not only in good condition with good performance but also is thoroughly washed and disinfected.
2)Prior to use, you must check and confirm whether the power supply and gas source in the field comply with requirements in accordance with the description in 4.1, and must check whether all functions of the ventilator are normal in accordance with descriptions in 4.3 and 4.4.
3)Prior to use of this ventilator on a patient, you must adjust properly all operating parameters by connecting it to a test lung. For details, see 5.2.
4)Medical staffs must provide field monitoring during the use of this ventilator. While pay attention to the operating status of this ventilator, the monitoring physician must pay attention to the vital signs and blood gas analysis data of the patient and adjust the ventilator to the operating status most adapting to the needs of the patient for optimal medical effect.
5)If oxygen is supplied with an oxygen cylinder, you may use an oxygen pressure reducer. You should adjust the pressure regulation handle to the minimum level position, then turn on the main switch on the oxygen cylinder and then slowly adjust the pressure regulation handle until the desired pressure is reached. Turn off the gas source and then the power to shut down the ventilator.
6)Prior to startup, check the pressures of the air source and oxygen source and they should be stabilized at a level around 0.4MPa.
5.2 Setting of Ventilation Modes
5.2.1Assisted/Controlled" Mode
The "Assisted/Controlled" mode is the default mode in which the ventilator operates when it is started up.
Such mode is mainly intended for patients with no or weak and intermittent spontaneous breathing. If the patient shows no spontaneous breathing, the respirator provides intermittent positive pressure ventilation of the patient following the set parameters, and this ventilation mode is namely called controlled ventilation mode. When the spontaneous breathing is recovered to a certain extent, the ventilation by the respirator is automatically synchronized with the spontaneous breathing in the patient, and this ventilation mode is namely called assisted ventilation mode. The control ventilation and assisted ventilation modes are switched to each other at an interval of 6s.
Operating parameters should be preset on the test lung following the procedures as follows:
1)Connect the gas source and power and confirm that the ventilator operates in the "Assisted/controlled" mode and the corresponding indicators go on.
2)Adjust the "Adjust IPPV Frequency" knob and the "Control Frequency" digital display will provide the corresponding indication.
3)Select an I:E ratio according to the needs of the patient.
4)Adjust the "Adjust Tidal Volume" knob, observe the "Tidal Volume" indicator and set the tidal volume to the value as needed. For adult patients, make the initial setting based on the value of 10mL per kg of body weight and then fine tune the value according to the actual conditions of the patient.
5)The airway pressure indicator shows the variation in the airway pressure in real time. Carefully adjust the "Airway Pressure Limit" according to the airway pressure peak to set the airway pressure limit to a level slightly higher than the peak pressure.
6)Set the "Inspiration Triggering Pressure". When the spontaneous breathing in the patient is recovered to a certain extent, the inspiration triggering pressure will provide a ventilation synchronization signal to the respirator. At the same time, each time when the patient takes a breath spontaneously the inspiration triggering pressure indicator flickers once. Generally, the inspiration triggering pressure can be set to be a level 0.1kPa lower than the minimum airway pressure when the patient has no spontaneous breathing.
7)Adjust the "PEEP" knob, observe the minimum airway pressure displayed when expiration ends and judge whether the setting of the PEEP is appropriate or not. The adjustment range is 0.1~1.0 kPa.
8) After selecting the "Sign" button and select this function, the Sigh indicator goes on and the ventilator provides one ventilation at a big tidal volume (no less than 1.5 times of the set value) at an interval of 80 ventilations.     
Only upon completion of the above setting can you remove the test lung and connect the ventilator with the patient.
After connecting the ventilator with the airway in the patient, you should carefully observe the symptoms and lung inflation of the patient and further fine adjust the operation status of the respirator according to the monitor instrument and arterial blood and gas analysis data to achieve the optimal ventilation effect.
5.2.2 Controlled" Mode
This mode is only intended for patients with no spontaneous breathing.  
Press the "Select Ventilation Mode" key to enable the "Control" indicator to be on and the ventilator enters this operating mode. The "Spontaneous Breathing Frequency" digital display provides no presentation due to the condition that no spontaneous breath is taken and other displays still show the corresponding contents. The setting of the operating parameters in this mode is the same as that in 5.2.1.
In this mode, you can still select (or not select) the PEEP and Sigh functions.
5.2.3 IMV Mode
This ventilation mode is intended for spontaneously breathing patients. It can gradually reduce the patient's dependency on the ventilator to facilitate weaning of the patient from the ventilator. In this mode, the mandatory ventilation of the patient is performed once at a certain interval. Upon completion of mandatory ventilation, the next mandatory ventilation is performed a certain period of time later. During the interval between two mandatory ventilations, the patient can spontaneously breath at his own breathing rate.
The interval at which the mandatory ventilation occurs depends on the setting of the "IMV" frequency.
1)Press the "Select Ventilation Mode" key to select the "Intermittent Mandatory Ventilation" mode and the corresponding indicator goes on.
2)Adjust such parameters as IPPV frequency, respiratory rate, tidal volume, pressure limit, spontaneous inspiration triggering pressure, etc. to ensure that the optimal respiratory indexes needed by the patient are reached.
3) You should adjust the "Inspiration Triggering Pressure" knob gradually from "0 kPa" to "-0.4kPa" to exercise and control the patient's spontaneous breathing efforts and respiratory volume. In this mode, the tidal volume should be adjusted in a finer mode because the tidal volume can change the patient's respiratory parameters under the impact by the inspiration triggering pressure such as the respiration time, respiratory rate, inspiratory tidal volume and other relevant life index.
4)In this mode, you can still select (or not select) the PEEP and Sigh functions.

5.2.4Manually Controlled Ventilation" Mode
In the event that the AC power supply to the ventilator is down, the ventilator can operate the emergency battery. The output voltage of the battery gradually drops during operation. If such output voltage drops to a level which is insufficient to drive the ventilator to operate, you should replace the battery with one with sufficient power in time. If you cannot replace with a new battery or in an urgent case when you cannot find a new battery, you can apply the "Manually Controlled Ventilation" mode.
Such mode needs to be operated by a physician with rich clinical experiences. That physician should press the "Manually Controlled Ventilation" button at a certain rhythm to simply maintain the respiration of the patient. Each time the physician presses the button the ventilator ventilates the patient once and such parameters as the ventilation time, tidal volume, circuit pressure, etc. are completely manually controlled by the physician.
When pressing the button, the physician must pay close attention to the lung inflation of the patient and indication on the airway pressure gauge. The ventilator uses an pneumatic pressure gauge and such gauge will not be affected in case of a sudden power supply failure.
5.3 Use of Humidifier
The humidifier is not a standard accessory of this ventilator and the user needs to optionally purchase it according to actual requirements.
For a patient using an artificial airway or using a ventilator for a long time, a humidifier should be connected in series on the ventilation tube to increase the temperature and humidity of the mixed gas. The internal water temperature of the humidifier should be carefully adjusted according to the patient's needs. Generally, the water temperature of the humidifier should ensure that the temperature of the gas inhaled by the patient ranges from 32ºC to 35ºC and does not exceed 40ºC. Although the humidity is higher if the temperature is higher, a too high temperature will cause adverse reactions to the patient and respiratory tract burn to occur in severe cases.
During the use of the humidifier, you should also always pay attention to the outlet temperature and water volume in the humidifier to prevent dry burning.
5.4 Operation Time Extension Upon Power Failure
This ventilator is capable of extending the operation time in case of power failure: when the AC power supply is down, the ventilator will automatically switch to operate on the battery. At this time, the "Operation on Battery" indicator goes on. After the AC power supply is resumed, the ventilator will automatically switch to operate on AC power supply, the "Operation on Battery" indicator goes out and the ventilator power circuit charges the battery in a trickle manner.
What needs to be noted is that the battery has limited capacity and can be only used as emergency battery. If you need to have the ventilator operate on the battery for a long time, you must select one with large capacity (battery pack).
For the further description of the use and maintenance of the battery, please refer to Section 9.2 of this user manual.
5.5 Shutdown Operations
When the patient's various vital indexes comply with the shutdown requirements, you can wean the ventilator.
Before weaning the ventilator, you should remove the tee tube connected with the patient and observe the spontaneous breathing by the patient. Only after the spontaneous breathing is completely recovered can you remove the mask or extract the endotracheal tube and then shut down the ventilator. You must not shut down the ventilator and then remove the tee tube.
The ventilator should be immediately washed and disinfected after it is used and then should be necessarily serviced and maintained.
SymptomPossible CauseSolution
Ventilator tidal volume is not stable or displayedFlow sensor is interfered by strong lightAvoid impellers in the flow sensor from direct strong light
Flow sensor is in poor contactRe-connect the flow sensor or replace the plug
Ventilation circuit connection is incorrectRe-connect the ventilation circuit
Ventilation circuit leaks and the patient shows oxygen deficitCheck whether the humidifier is tightened and whether the ventilation circuit leaks
Water vapor exists in the impellersRemove, wash and air dry impellers
Air source pressure is too lowPressurize the compressed air source and ensure the air source pressure ranges from 0.35 to 0.5MPa
PEEP setting is inappropriateSet a correct PEEP
Inspiration triggering pressure setting is inappropriateSet a correct inspiration triggering pressure
Inspiration plateau setting is inappropriateSet a correct inspiration plateau
Flow sensor is damagedReplace the flow sensor
Indication from the oxygen pressure gauge or laughing pressure gauge is inaccurateInput air source pressure is too lowAdjust the air source pressure
Respiratory circuit leaksCheck the circuit connector and re-install, and replace the leaking cannula.
Internal pressure regulator valve is in malfunctionRe-adjust the pressure regulator valve or replace
The machine operating frequency is too fastThe frequency setting is too high or the inspiration triggering pressure is inappropriately setAdjust the operating frequency to the correct level and set the inspiration triggering pressure to be negative
Lower tidal volume limit alarmTidal volume is set to be too lowSet the tidal volume to the appropriate range.
Upper tidal volume limit alarmTidal volume is set to be too highSet the tidal volume to the appropriate range.
The ventilator airway pressure alarm and airway pressure limits icons are highlighted and the upper airway pressure limit alarm continues to be onThe tidal volume and I:E ratio are not properly adjusted.Adjust the I:E ratio and tidal volume
The upper pressure limit is notAdjust the upper pressure limit
The patient's spontaneous breathing conflicts with the mechanical ventilationSet a correct the inspiration triggering pressure
The patient suffers tracheospasm or airway resistance is increased by secretaSputum suction of the patient is recommended and expectorant should be used
The ventilator airway pressure alarm icon is highlighted and the airway pressure lower limit alarm continues to be on.The tidal volume value is set to be too small.Adjust the tidal volume
The pressure of the oxygen cylinder or central oxygen supply is insufficientSet a correct lower pressure limit
The pressure of the oxygen cylinder or central oxygen supply is insufficientReplace the oxygen cylinder or increase the air source pressure
The oxygen cylinder reducer or oxygen conveyance circuit is in malfunctionReplace the oxygen cylinder, reducer and oxygen conveyance circuit.
Pressure signal tube is separated or water is accumulated in the tubeRe-connect the signal tube or drain the water
Continuous audible alarmThe battery power is exhausted or battery is damaged after the AC power supply is down.Replace  with battery with sufficient capacity
Black screen of ventilatorInverter is damagedReplace the inverter
LCD screen is damagedReplace the LCD screen
Blank screen of ventilatorLCD screen wires are in poor contactRe-connect LCD screen wires
Control block is damagedReplace the control block
Rapid oxygen supply valve does not provide gasThe spring of the rapid oxygen supply valve is snapped and the seal ring is dry or valve contains sundries.Adjust or replace spring and apply Vaseline to the seal ring and clear sundries.
Rapid oxygen supply valve outputs gas all the timeSeal ring is aged or rapid oxygen supply valve cannot retract after being pressedRe-adjust, install or replace it
Humidifier cannot workAC power is not connectedRe-connect the AC power
Fuse is burnt outReplace the fuse
Humidifier is heating all the timeHeating rod is damagedReplace the heating rod
Battery works when the grid power is normalAC power plug is not connectedConnect the power plug
Fuse is burnt outReplace the fuse
Junction panel or power cord is damagedReplace junction panel or power cord

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