Metrant

Humming V is done (Figure ; That humming V is done outward appearance photograph)

1. The characteristic

As for that MERA humming II is done, with the manufacture of the "METORAN" Inc., the Izumi carpenter medical department industry became a sales agent. Later, that humming II is done became a discontinuance, that humming V is done was developed by the "METORAN" Inc. and as for this, Daido Hoxan became a sales agent. At present, Iwaki Inc. is selling. Powerful neoveto rival product however, there is that humming V is done. That humming V is done, too, was a resuscitator for the domestic newborn baby who combined HFO of the piston method and IMV of the continuous flow relieving method, but the stroke volume increased more to 50 ml than humming II is done and the application range expanded. Also, because MPU had two ones of 16 bits, the resolution of the control improved. That humming V is done has a pressure trigger mechanism but the trigger performance in the newborn baby isn't enough. The HFO adaptation is a maximum of about 8 kg at the weight. R100 which is Calliope alpha where the "METORAN" Inc. updated a that humming V is done mechanism in the modern technology after that and where there was cost cutting and HFO machine for the infant adult, too, is •Ή”„ing. The thing with schedule that improvement is repeated every model about the HFO mechanism of the "METORAN" Inc. and that a model is unified by the X of next term main force aircraft's being hummed in the future

2. The performance

1) The mode that it is possible to use

(All active-ventilations are done by the pressure relieving ventilation of time cycle.)

(S) IMV, the pressure relieving

CPAP (The continuous flow)

HFO

HFO+AutoSigh

2) This proximal dater

The continuous flow quantity .5-45 LPM (The IMV mode)

.8 LPM (The HFO mode)

The intake gas slew-rate L/s²

The IMV number of times .1-120 BPM

The HFO number of times .13-17 Hz

The maximum HFO amplitude of vibration .80 ml

3. The explanation of the control circuit, the controlling mechanism

The method which the ventilating-pressure is composed of by relieving a continuous flow in the pressure by the exhalation-valve in the time cycle is adopted. Call feeling ‘ͺ is equipped with HFO of the piston type. Because the control of flow does, that it is mechanical, the new Mattick circuit is complicated.

4. The new Mattick circuit (Figure ; That humming V is done new Mattick circuit)

1) The IMV/CPAP mode (Figure ; Outline of gas stream in IMV/CPAP mode)

The dense fog which was entered than each gas of oxygen, air supplies an intake flow through positive-crankcase-ventilation-valve (1)EP1 and (2)EP2 after adjusted to the setting oxygen concentration by the isotonicity mechanical blender. At this time, current-adjustment (1) valve EP1 does a current-adjustment in case of intake and (2)EP2 adjusts a continuous flow through the reservoir back. Gas is sent to the patient circuit, but the safety valve operates and being opened to it in the atmosphere when the patient circuit internal pressure exceeds 15cmH2O than the caution set value Gas is sent to the lung through the impedance valve. At this time, the impedance valve becomes the condition (the influence doesn't come out to the intake flow) which the disengagedness and the becoming resistance don't hang over. An expiratory-pressure is adjusted to the gas which was summoned from the lung by the exhalation-valve through the circuit of breathing of the side of the expiration and is opened to it in the atmosphere.

2) The HFO mode (Figure ; Outline of gas stream in HFO mode)

The dense fog which was entered than each gas of oxygen, air supplies intake flow 8L/a minute through positive-crankcase-ventilation-valve (1)EP1 after adjusted to the setting oxygen concentration by the isotonicity mechanical blender. At this time, positive-crankcase-ventilation-valve (1)EP1 adjusts a continuous flow in case of intake. Positive-crankcase-ventilation-valve (2)EP2 adjusts a continuous flow to control an average airway pressure through venture Lee. The piston adds a high frequency oscillation for the HFO ventilation into breathing circuit with the circuit of the side of the piston. Gas is sent to the patient circuit, but the safety valve operates and being opened to it in the atmosphere when the patient circuit internal pressure exceeds 15cmH2O than the caution set value Gas is sent to the lung through the impedance valve. At this time, the impedance valve becomes a half •Β condition and the condition (the continuous flow make pass and cuts a high frequency oscillation ingredient) which the becoming resistance drives. An average airway pressure is adjusted to the gas which was summoned from the lung by the exhalation-valve through the circuit of breathing of the side of the expiration with the continuous flow in 8L/the minute and is opened to it in the atmosphere. It is removed, it is sent to the piston integrate type exhalation-valve and moisture and so on are opened to the expiration which was emitted from the patient about any ventilation mode in the atmosphere after that by the watered lap. In the exhalation-valve, the timing of intake and the expiration resembles each other with the control unit, opens and shuts and it controls an average airway pressure at the time of the PEEP/CPAP pressure and the HFO ventilation mode.

3) The structure of the HFO piston (Figure ; Photograph of V piston)

The that humming V is done vibration generating procedure adopts a piston method. The structure can be roughly divided into the linear motor to move this piston, and the control unit, the new Mattick control unit which manages ventilator ability. The gas which plumbing was inputted to passes a decompression-valve and an oxygen blender, it is controlled and the side of intake is sent to breathing circuit in the flow rate by the flow valve. The flow valve implements the one which is special respectively for the IMV/CPAP mode and the HFO mode. The side of the expiration is separated to two, and as for the side, the exhalation-valve and jet venture Lee are implemented and get off. The low-pass filter tube, the other which is thin to control the emission of the expiration and the continuous flow and average airway pressure (MAP) become the piston tube which is bold to tell the oscillating flow to have made occur with the piston to breathing circuit from the side of the expiration. In the IMV/CPAP mode, a flow inspiratory-pressure, PEEP/CPAP pressure and so on are controlled in the expiration by the low-pass filter tube. The piston tube gets not to move with a piston shut for the leak to pass away. In the HFO mode, the control of MAP is made a low-pass filter tube by the emission of the flow continuous flow, the expiration and jet venture Lee in the expiration. The piston vibrates at the stroke volume (SV) to have been opened to and for it to have been set by the linear motor and frequency (Hz) and vibration is conducted into breathing circuit by the piston tube.

5. The control software

@

1) The trigger formula

It is a pressure trigger formula.

2)IMV/CPAP

SIMV is a variable-time method. (Figure ; Explanation of SIMV : The length of t5, t6, t7, t8 is the same and is fixed at the 60sec/SIMV number of times.)

3) In SIGH addition, HFO stops. (Figure ; Explanation of auto sigh) The setting of IMV is used in the number of times and the time of SIGH. That is, the operation of SIGH is fixed at the air changes per hour and the intake time by IMV.

6. The operation system (Figure ; That humming V is done operating panel)

In the IMV mode, it sets trigger sensitivity, an inspiratory-pressure, a flow rate, intake time, breathing number of times. In the HFO mode, it sets SIGH pressure, a frequency, a stroke volume, an average airway pressure. When using SIGH, it sets a desired air changes per hour (the SIGH number of times) and intake time (the SIGH time) by the setting of IMV.