Smith Medical
Pneupac series; rescuPAC,paraPAC,transPAC,ventiPAC, babyPAC
1. The characteristic (Figure ; Outward appearance photograph, figure of paraPAC ; The outward appearance photograph, figure of ventiPAC ; The outward appearance photograph of babyPAC)
The paraPAC series is the oxygen which was designed, presupposing that the paramedical operates or a simple type resuscitator with the small light weight the source of power of which is the gas pressure of the compressed air, unshockability, informal operation method. It is suitable for the rescue, the revival, CT Muro, MRI Muro, the conveyance. rescuPAC is the simple operation version to set a taking air quantity of ventilation and an air changes per hour to with one control by the emergency and rescue crew business. paraPAC can do the setting of an air changes per hour and a taking air quantity of ventilation separately by the paramedical business. paraPAC and the feature are the same but transPAC becomes the specification to set from the expired volume per minute and the air changes per hour. ventiPAC becomes intake time, expiration time in the hospital business and gets to do can with the setting such as the intake gas flow rate, being small. As for these, the equal to or more than 10-Kg weight is application range. On the other hand, it is possible to be set by BabyPAC, that it differs from the other series in the real resuscitator of the 従圧 type for the infant ~ newborn baby to the 20-Kg weight and moreover that it is free to the oxygen concentration. At present, in the country, only paraPAC and babyPAC are sold. There are P20 of the stationary-type and P200 which is equipped with the electronic type pressure alarm in paraPAC in the pressure relieving & alarm. There are 20 D of P with the demand feature to the spontaneous-respiration which each has and 200 D of P and there are 4 models in amount in paraPAC. 20 D of P, 200 D of P and ventiPAC, babyPAC of paraPAC are MRI compatible model. Way, as for MRI compatible machine, the exterior case is white.
2. The performance
The mode .CMV/Demand(synchronized Minimum Mandatory Ventilation),
IMV (Only babyPAC)
The oxygen concentration 45% (the time of Air Mix), 100% (The time of No Air Mix)
The taking air quantity of ventilation .70-1,300ml (paraPAC)
The I:E ratio It isn't possible to set (paraPAC).
The intake gas flow rate .5.2-52 LPM (paraPAC)
The demand flow .120LPM (- The time of 8pH2O)
Breathing number of times .8-40BPM (paraPAC)
The intake time .0.5-3.0sec. (ventiPAC) 0.25-2.0sec. (babyPAC)
The expiration time .6.0-0.5sec. (ventiPAC) 0.25-4.0sec. (babyPAC)
0.25-40sec. (babyPAC, IMV mode)
The intake gas flow rate .1.0-0.1 L/sec(ventiPAC), 10LPM (Fixation babyPAC)
The inspiratory-pressure 10-70cmH2O (babyPAC)
The gas consumption Expired volume per minute +20 ml x RR
(At the time of the air mixing, it is 30% of expired volume per minute + 20 ml x RR).
The weight .2.8 Kg
The power consumption The pear
3. The outline of the mechanism
1) paraPAC and ventiPAC
paraPAC operates only with gas with the simple type resuscitator of the new Mattick circuit-system. A small compressor, too, is prepared by the option. Breathing number of times and the taking air quantity of ventilation are independent and it is possible to be set by them but with the simple new Mattick circuit, they can not set these parameters correctly at the optional value (For example, CV-2000 and New Port E-100 fix a taking air quantity of ventilation in the product between the intake time and the intake gas flow rate). When changing setting breathing number of times in paraPAC, it accompanies to that and it changes in the intake time, too, and the taking air quantity of ventilation, too, changes consequently (As in the table below). When increasing breathing number of times to make change quantity little, it becomes the mechanism that the intake gas flow rate, too, increases but only in case of specific setting breathing number of times, the error becomes latitude. In the range with taking air quantity of ventilation and breathing number of times, it is divided and the range with the same color becomes desirable setting to 4 colors to the operating panel surface. A lineup is done about ventiPAC (the country isn't sold), too, as the higher rank model to make setting correct. ventiPAC sets intake time, an intake gas flow rate, expiration time and sets a taking air quantity of ventilation and breathing number of times. Like the more mechanism of this one, it is correct but the computation for the part, the setting becomes complex.
The taking air quantity of ventilation setting The actual flow rate The breathing number of times setting The actual taking air quantity of ventilation
The maximum
52 LPM
12 BPM
1570 ml
1290 ml
1300 ml
48 LPM
12 BPM
1400 ml
1180 ml
1000 ml
39 LPM
12 BPM
1170 ml
960 ml
800 ml
34 LPM
12 BPM
15 BPM
850 ml
750 ml
500 ml
23 LPM
15 BPM
20 BPM
540 ml
470 ml
200 ml
20 BPM
40 BPM
220 ml
130 ml
5.2 LPM
25 BPM
40 BPM
90 ml
65 ml
In the intake time, the following fixed value is chosen by setting breathing number of times. In the intake time, too much little change regardless of setting breathing number of times occurs. If anything, in the expiration time, it changes roughly. The point which doesn't change of the device for setting breathing number of times not to change a taking air quantity of ventilation too much by the intake time is contributing most and as for the revision mechanism of the intake gas flow rate, it finds a supplementary thing.
Setting breathing number of times The intake time The I:E ratio The expiration time
12 BPM
15 BPM
20 BPM
25 BPM
30 BPM
35 BPM
40 BPM
1.67 s
1.38 s
1.18 s
1.0 s
0.84 s
0.72 s
0.63 s
0.56 s
1 : 3.49
1 : 2.62
1 : 2.39
1 : 2
1 : 1.86
1 : 1.73
1 : 1.71
1 : 1.68
5.83 s
3.62 s
2.82 s
2.0 s
1.56 s
1.28 s
1.08 s
0.84 s
The setting of paraPAC is quite irresponsible but in this way, it esteems that the paramedical can be undoubtedly operated quickly to the emergency. On the other hand, ventiPAC sets a taking air quantity of ventilation, breathing number of times, I:E ratio (the intake time) by the setting of intake time, expiration time, an intake gas flow rate. This one can set a parameter more correctly and the ambiguousness which paraPAC has is canceled but has the weak point to need mental arithmetic on the occasion of setting and also to require constant knowledge on the occasion of setting.
Way, rescuPAC is simpler, picks and a taking air quantity of ventilation and breathing number of times are set at the same time at one. It is possible to set continuously but as for the control boiling, compatible value is printed.

The air changes per hour

The taking air quantity of ventilation


b) The CMV/Demand mode
In this mode, according to the demand volume, the active-ventilation number of times decreases. It is done by the following theory. According to the volume quantity, in the expiration time to the following active-ventilation, it is maximum, setting breathing number of times from the time when there was a demand and it is extended until the prescribed expiration time (the expiration time of the table above). Because the expiration time extension mechanism operates every time there is an enough demand volume, if (breath by breath basis), the condition are well-proportioned, consequently, the oscillator stops fully (continuously). Breathing number of times 12-16 In the range of BPM, if there is a taking air quantity of ventilation of equal to or more than 400 ml, it meets this condition. At few intake gas flow rates, the expiration time extension mechanism doesn't operate. Tachypn ea however, however, if there is a demand volume sufficiently, the extension mechanism operates. Therefore, when there is much spontaneous-respiration number of times, the dead-stop of "OSIRETA-" can happen but when little, the partial stop can happen. It is 15 to the case If there is a demand flow rate above LPM, the mechanical ventilation synchronizes with the spontaneous-respiration (In other words, it operates as the trigger mechanism). When summarizing these operation, CMV/Demand operates like EMMV if it is strong in the spontaneous-respiration and it operates like SIMV if the spontaneous-respiration is weak.
2) The new Mattick circuit (The figure ; New Mattick schematic, figure of ventiPAC ; The structural drawing of ventiPAC)
Only an outline is published by the new Mattick circuit. The product which added a demand mechanism to paraPAC is paraPAC It is 20 D. It is ventiPAC that changed the setting method of "MEINOSIRETA-". Main new Mattick switch 4 is the switch whether or not which supplies drive gas to the CMV circuit and as for the Demand circuit, regardless of the position of the switch, drive gas is directly supplied. A change is done in CMV/Demand and Demand by this switch. "MEINOSIRETA-" is composed of new Mattick circuit and controls timing in the time of intake and the expiration by CMV. The demand circuit participates in the "OSIRETA-" circuit, too, and depending on the demand quantity, it brings about the stop of "OSIRETA-". Also, it operates as the trigger mechanism, too. Setting knob 6 with breathing number of times has the neelde valve which controls the operation of "OSIRETA-" and also the function to rather change an intake gas flow rate to. The knob of the taking air quantity of ventilation controls the flow rate of connected neelde valves 13, 14. When air intake 15 doesn't do air mixing with the equipment which does air mixing, because drive gas is mixed, consequently, it isn't diluted. An abnormal fluid pressure in the circuit is relieved with opening valve 12. When intake valve 16 (becomes on by "OSIRETA-" and) pressure is taken It makes a switch off and when pressure isn't taken, it does the function which opens a patient circuit to 以外 in the big worrying in case of intake with the new Mattick switch which becomes on. Because air mixing isn't done about demand gas on the mechanism, drive gas is 100% supplied.
The exhalation-valve is the valve mechanism which Ambu bag has and similar structure and expiration is covered in pressurization by it. PEEP valve, too, is prepared with the option.
4. The operation (Figure ; Operating panel, figure of ventiPAC ; The operating panel of babyPAC)
paraPAC sets Vt (the taking air quantity of ventilation) and Freq (the air changes per hour). These can not be recommended because that they do many 与"ERU" of an impression which can be set to the optional value but many errors occur in the setting which failed from the range which was divided into the same color because they are a simple machine persistently. ventiPAC sets intake time, expiration time, an intake gas flow rate. As far as drive gas is connected, the demand mechanism works. To be general had better do air mixture to save drive gas, too. It becomes about 45% of oxygen concentrations to the case. It does the adjustment (20-80pH2O) of the relieving pressure while seeing a manometer. babyPAC sets an inspiratory-pressure and PEEP pressure and so on.
5. The monitor, the alarm
The manometer can make the monitor of the airway pressure. In pressure relieving, the alarm sound sounds.
6. The maintenance
It does a feature check regularly. It doesn't need a special check repair plan. Check a patient circuit and an exhalation-valve timely and sterilize them in the timeliness, the wash.
7. The fault
There is much consumption of oxygen because it is a gas drive system.