DD218731A3 - VENTILATION DEVICE FOR AUTOMATIC AND MANUAL VENTILATION WITH NARCOSIS VENTILATION - Google Patents

Abstract

THE INVENTION INCLUDES A VENTILATION DEVICE FOR AUTOMATIC AND MANUAL VENTILATION WITH A BELLOW IN BOTTLE SYSTEM FOR AUTOMATIC OPERATION AND A HANDBAG FOR MANUAL OPERATION. IT PROVIDES A VOLUME CONSTANCE THROUGH PRESSURE COMPENSATION FUNCTION THROUGH A COMBINED FUNCTION GROUPS CIRCUIT, WHICH TAXES TECHNOLOGY TO COMMUNICATE EXCESSIVE ENERGY FAILURE. THE TASK COMPLEX IS ESTABLISHED BY A CIRCUIT ARRANGEMENT PERFORMING A VOLUME-CONSTANT VENTILATION, PRESSURE CONSTANT VENTILATION, HAND TAMING, AND SPANISHING VIA U / P CONVERTERS IN SIGNIFICANT CONNECTION WITH AN APPLICATION UNIT.

Description

Ventilation ventilator for anesthesia ventilation- with automatic and manual ventilation __

Field of application of the invention:,. , '. ·

The invention relates to a respiratory ventilator with automatic and manual ventilation, with a "bellow in bottle" system for automatic operation and a manual ventilation bag for manual operation. Its electronically operating control part is combined with devices of the drive gas supply and breathing gas supply as well as peripheral puncture groups for Yolumenkonstanz, Anästhesiebeatmungswahl and ΡΞΕΡ-ffunktion to a control unit whose connections with each other and with the "bellow in bottle" -Sststem are solvable.

Characteristic of the known technical solutions:

3s already ITarkosebeatmungsgeräte or anesthesia Buhmuhgssysteme are known in which the switching from automatic to manual ventilation by means of a switching mechanism

12 NQY 1932 * 047335

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(DS-OS 25, 54 674) "The memory and drive elements used are a '·' for the operating mode" Automatic ". Bellows and for the operating mode "hand" a breathing bag. Of these flows during an inspiration phase, the breathing gas through ^one a GOP absorber and a Einatemventii "to the patient. The exhalation, however, via a Ausatemventii .back into the memory and Antriabselement The case used breathing gas quantity is replaced by fresh gas in the system 3inatemzweig between CO-- Absorber and Sinatemventil flows »The resulting in the system respiratory gas excess is discharged in automatic mode by an exhalation open taxed Memoranventil and in 'manual operation by a spring loaded te S- overpressure valve»

These devices allow only limited use and. are an optionally assignment to oeliebige Harkosekreis- ^N systems not _(suitable. This Hangel avoids sarcosis-Deatmungssystem, which is intended for semi-closed and semi-open systems and the both automatic as well as manual and spontaneous operation enables (DSvCS-29 4.5 485) He also uses a breathing bellows in a pressure chamber for automatic operation and a breathing bag for manual operation, its construction being such that, with automatic ventilation in the semi-closed system, breathing gas driven by the breathing bellows is inspired by the sinus branch the inspiration, the breathing gas via the exhalation branch with expiratory valve and switching valve is first to the breathing bag and after the filling sum respiratory tallow is promoted back.With manual ventilation, the breathing gas by pressure on the breathing bag ÜDer a bypass on the breathing bellows Passed in. The lung and at The inspiration flows back into the breathing bag via the switching valve. The halo-open system is achieved by an adjustment of the Umscnaltventils, so that both in automatic and in manual ¹ operation with the same inspiratory the

Breathing gas is guided into an exhaust gas manifold during aspiration via the expiratory valve and the correspondingly rotated changeover valve ", '.

Regardless of whether re-use of the exhaled gas is desired or the patient is always receiving fresh respiratory gas, the fresh gas inflow will always be greater than the gas consumption of the patient, so that the excess from the inflow The outflow of the excess gas during the Esspirationsphase controlled to achieve the volume constancy, however, is achieved via tax-technical links, which justify a large inner volume of the Harkosebeatmungssystems, which makes special designs necessary for different applications · Apart from the absence Although a corresponding monitoring technology realizes the proposed construction the desired goal, but is a universally valid .und optimal Lösung'noch not found.

Object of the invention:

The aim of the invention is the elimination of the indicated disadvantages, the avoidance of a complex circuit design and the creation of an energy failure warning _β. Its purpose is also to minimize the function groups for volume constancy and PSBP function and in such a way; that their assignability to any LFarkosekreissysteme is directly possible «

Explanation of the essence of the invention:

The invention has as its object, a volume constancy by pressure compensation function, by controlled outflow of the excess gases during Ssspirationsphase in blockage of the traditional excess valve in the circular.

during this process, the phase of inspiration is secured by a group of functions. digital control signals in pneumatic power - enhanced: 'control variables an assembly circuit' sought, which is relatively .. small, light, quiet and hardly susceptible to interference

tax-technical linkage is intended to be solved so that, · pneumatic failure in the event of failure and is pneumatically warned in case of failure .Electrical energy, Srfindungsge- ..- .. measure is on 'solved by the fact that a circuit arrangement, with a , Control-for-frequency and Atemzeitverhält _r ... nis has a switching unit connected via a first and a second ü / P - ^ and a switch-off delay with a switch designed for Hehrfachfunktionen switch signal, via a third U / Pi / andler with a known ~ - "DeIIoW connected in Boettle ^M -S7stem and the Atemgasan'schluß - one provided with an excess gas valve ^{ITarkosekreislauf-:} - is connected in part, und.daß the switching unit from a -.Umschaltventil with an associated Handbeatmungsoeutel him.. and - an exhalation valve with a PEEP valve associated with it, of which the S-signal of the Uinschalt valve with .- .- the first U / PV / andler and the S input of the exhalation valve is in communication with the second U / P converter which, in turn, is loosely connected to an OR gate with the turn-off delay sig- 'Γ .

The preferred embodiment of the device according to the invention also provides a simplified structure of the circuit arrangement, which comprises a combination of functional groups for volume-constant ventilation, for pressure-constant ventilation. Manual ventilation and for spontaneous breathing. The circuit arrangement may consist in a first part in that the supplied with electric power and connected in Heihe with a first switching part of the switch, a voltage converter, a frequency divider and a UHD gate control on the one hand via signal lines with a led to the device output, with the third U / P converter, above this with a gas flow valve and this with an outflow valve

and the OR gate connected storage element is signal-linked, on the other hand, having a signal line connected to another AND gate, the inlet side via a signal line to one of the output of the voltage converter to the former UKD gate., From a screening stage, a second Switching part of the switch and an OR gate existing function group and.auslaßseitig connected to the switch-off delay, with its inverse output together with the inverse output of a SiOR gate, one input to the latter signal line and the other input to the output of the memory element and connected to this, OR gate connected, is guided to a second device output

The advantageous embodiment of the invention also consists in a second part of the circuit arrangement, in which an inlet side with third U / P converter signal-linked and over a drive gas processing connected to a drive gas connection UKD gate is connected in series with a metering device and an injector whose Output connected to the gas flow valve, to a pressure relief valve and a Unterdruc & relief valve and to the "bellow in bottle" system is connected. According to the invention, it is expedient to connect the second switching part of the switch to the inputs of an OR gate, one of which Input still with the one ODSR gate and whose output is signal-linked to the other OR gate.

Further features in the context of the invention will become apparent from the claims of the invention, which are particularly related to the preferred embodiment of the energy failure warning and yet the circuit arrangement in its entirety. They consist in that the output of the screening stage with a fourth U / P converter and an .Inhibitor with a pneumatic alarm device and a HAHD gate with an electrical alarm device and the output

the Antrlebsgasaufbereitung over the inhibitor mit.der pneumatic-Alaimeinrichtung and a'P / TJ Viiandler and the -NAND gate with the electrical alarm device connected. ; , ^s ,

The signal connections of the functional groups are of course made via detachable connections of known design. Further advantages of the invention, as well as further details and features, will become apparent from the description of the following embodiment.

'Embodiment:

An embodiment of the invention will be described below with reference to the figures of; described in more detail on the attached drawing. It show in it.

1 shows a circuit arrangement with a pneumatic-electronic and electronic-pneumatic control system and with a detention unit for anesthesia-breathing systems and.

Fig. 2, the switching unit in a schematic representation. ,

The ventilator according to the invention is provided with a "bellow in bottle" system 1 for automatic operation and with a manual ventilator bag 2 for manual operation. These are components of a circuit arrangement shown in Fig. 1, which also has a controller 3 for frequency and respiratory time ratio and a switching unit. 4 having. The latter is signal-linked via a first U / P converter 5 and a second U / P converter 6 as well as a switch-off delay 7 with »a switch S designed for multiple functions. The switchover unit 4 is also connected via a third" U / P converter 9 "connected to the" bellow in bottle "system 1 and .An connected to the breathing gas connection 10 of a provided with an excess gas valve Farkosekreislaufteil (not 'drawn). The switching unit 4 itself consists of a switching valve 11 with its associated

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Handbeatmungsbeutel 2 and an exhalation valve 12 'with an associated with him ΡΞΞΡ valve 13 ο Y.on this is the S-Singang of the switching valve 11 with the first U / P - // on dl he 5' and the S-Singang the exhalation valve 12th connected to the second U / Pv / orler 6. This is signal-linked via an ODSR gate 14 with the switch-off delay 7. The circuit arrangement represents a combination of functional groups for volume-constant ventilation, for constant pressure ventilation, for manual ventilation and for spontaneous breathing. The first part forms the one lined with electric energy 15 and in series with a first Schältteil of the switch 8, a voltage converter 16, a frequency divider 17 and a UHD gate 18 connected controller 3, on the one hand via signal lines 19> 20 with a led to the device output 21, with the U / P converter "9 _} via This is signal-linked to a gas flow valve 22 and via this to a discharge valve 23 and the OR gate 14 connected storage element 24. "On the other hand, the controller 3 is connected via the signal line 20 to an AND gate 25, the inlet side via a signal line 26th to one of output of the voltage converter 16 to the UITD gate 18 out of a Sieve 27 "a second switching part of the switch 8 and an ODSR gate 28 existing functional group and the outlet side is connected to the switch-off delay 7" Dei inverse output of this switch-off delay 7 is together with .the inverse output of a FOR gate 29, whose one input with the signal line 26 and whose other input is connected to the output of the memory element 24 and the ODSR gate 14, led to the output 30. A second part of the circuit arrangement has an AND gate 31 which is signal-connected on the inlet side with the U / P converter 9 and connected via a drive gas treatment 32 with a drive gas connection 33 in series with a metering device 34 and an injector 35. The

Output of the injector 35 is connected to the gas flow valve 22, to a pressure relief valve 35 and. a negative pressure limiting valve 37 and connected to the "bellow in bottle" -Systeni 1.

The; a switching part of the switch 8 'has. Connections to the two inputs of a further integrated in the circuit arrangement. ODEH gate. 38, whose one input is still signal-linked to the OR gate 28 and whose output is connected to the ODSR gate 14

The Snergiausfallwamung according to the invention is so well integrated into the circuit 'or' their logical function groups that pneumatically warned in case of failure of electrical energy and is warned in case of failure of pneumatic energy. This is achieved by the output of the screening stage 27 via a U / P converter 39 and an inhibitor 40 with a pneumatic alarm device 41 and, via a HAED gate 42 with. an electrical alarm device .43 and the output of the drive gas treatment 32 via the inhibitor 40 with the pneumatic alarm device 41 and via a P / U converter 44 and the HA & D gate 42. connected to the electrical alarm device 43, -In Fig. 1 are nor a signal line and a Gasdrucklei-, tion with the reference numerals 451 46, the first injector 35 with? the gas flow valve, 22 and the second connects the U / P converter 5 with the switching valve 11. In addition, from the bellows of the "bellow in bottler system 1 to this switching valve 11, a breathing gas conduit 47 through which breathing gas flows", '-.'

The switching unit 4 illustrated in FIG. 2 illustrates the functional group composed of the switching valve 11, the manual breathing bag 2, the exhalation valve 12 and the PSSP valve 13 and their connection to the respiratory gas line 47 or to the respiratory gas connection 10.

The significant advantages of the invention are not only the circuitry and its combined functional groups,

recognizable, but especially by the. now visible. ,

According to FIG. 1, the ventilator is supplied with electric power 15 'as soon as the first switching part of the switch 3 is switched to "sin". If the second switching part of the switch 8 is then switched to the second of four switching positions, the ventilator becomes Yolumenkonstanten ventilation commissioned. In this switching position run through the QDER gate 28 and the AND gate 18 network synchronous pulses from the Spanaungsv / orler. 16 via the frequency divider 17 in the controller 3, which thus allows ¹ setting different frequencies and Atemzeitverhältnisse · The guided via the signal line 19 to the S input of the memory element 24 pulse causes an output signal from the memory element 24 to the U / P converter > to the ODBE gate 14, the device output 21 and the NOR gate 29 is performed. At the same time via the signal line 26 is a supply of the AND gate 25 and the NOR gate 29 with: operating voltage, the latter blocked due to the applied signal at the U / P-ff-orler 9 this indicates ^: pneumatic signal the AND gate 31 and the gas flow valve 22 from which is closed. , \

The compressed gas flowing from the AntriebsgasanschluB 33 in the drive gas processing and finally to the AND gate 31 flows at an applied signal from the U / P converter 9 via the metering device 34 to the injector 35 and. from there via the gas pressure line 45 into the chamber 48 of the "bellow in bottler system 1, whereby the bellows therein is compressed and the breathing gas contained in it. flows via the breathing gas line 47 to the switching valve 11. As a result of the ODSR Gate 28 acting on the U / P converter 5 signal via the signal line 46, a pulse which brings the switching valve 11 in the open position. Also by the signal effect of the OR gate 14 and thereby caused by the pressure circuit of the ü /? -Tfandlers 6 the Exhalation valve 12 is opened, so that the breathing gas via the switching valve 11, the exhalation valve 12 and the breathing gas connection 10 the

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peripheral circulatory part (not drawn) and via this reaches the patient,

With .Beginn the subsequent expiratory phase is the memory, 7 element 24 reset by the controller 1 via the signal line 20, -also locked and simultaneously on the Ul'TD gate. 25 switched on the switch-off delay 7. This connection ensures that the signal occupancy remains on the exhalation valve 12 for the time being. However, since the memory element 24 blocks, the U / P converter 9 s.bj finally closes the uHD gate 31 and thus terminates the drive gas supply to the "bellow in bottle" system .; 1 .aur episode has. In addition, the gas flow valve 22 is brought into the open position, so.daß a venting of the "bellow in bottle" system T, in response to the Ahströmventil 23 possible. It is achieved by this switching process shown here that, the respiratory gas during the delayed switch-off, at the .Absehaltverzögerung 7 from the circuit part via the breathing gas connection 10, the exhalation valve 12, the switching valve 11 and the breathing gas line 4.7 in the bellows of the "bellow in bottle" system. Tray of the set time at the switch-off delay 7, the ODSH gate 14 is disabled-, the U / Pw ⁷ andler 6 drops, the exhalation valve 12 is switched and the excess gas can escape via the / PEEP valve 13 in the .Atmosphäre. The overpressure relief valve 36 and the vacuum relief valve 37 work as safety valves for the breathing pressure range.

Is-the second switch part of the switch S in the third ^switch. Switched position, in "conjunction with the above-described circuit system, a constant pressure ventilation is realized The operation of the entire circuit arrangement differs from the constant-volume respirator characterized in that the Sighalleitung 26 energized. and, consequently, the turn-off delay 7 is disabled, but the signal occupancy of the ODHR gate 38 affects the OR gate 14, which eventually turns on the commutator 6, so that the exhalation valve 12 closes the connection to the atmosphere via the OR gate ΡΞΞΡ-

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Valve 13 locks. This realizes the outflow of the excess gas from the Ateinkreislauf depending on the setting of the Abströmventiles 23 during the inspiration phase. Sine switching of the exhalation valve 12 can not be done via the ODJSH gate 14- or »by signaling to the U / P converter 6 with pressure-constant ventilation, since, as I said, the switch-off delay 7 is without puncture-and also at the CDER gate 38 constant signal is present, ·. Finally, if the second switching part of the switch 8 is switched to the fourth switching position, the / control 3 is also without electrical energy 15 and therefore no longer able to operate. Thus, although the U / P ./analisers 9, 5 are switched off, Via the changeover valve 11, a connection is made from the manual bag 2 via the exhalation valve 12. The exhalation valve 12 supplied with signal by the U / Pv / orler 6 blocks on the one hand the connection to the PKEiP valve 13, on the other hand a connection is made to the breathing gas connection 10, since at the same time the access from the switching valve 1 via the breathing gas line 4-7 to the bellow in bottle ^ft system 1 is closed, a ventilation of the patient can be carried out with the aid of the hand-held breathing bellows 2. The last switching position of the second switching part of the switch 8 causes the entire ventilator to be de-energized, that is to say the U / Pumps 9, 5 and 6 are out of operation and valves 11 and 12 are in the O position, allowing the patient to breathe spontaneously via exhalation valve 12 and PSSP valve 13. At this switch position and also in the second and third switching position of the second switching part of the switch 8 is via die.Siebstufe 27 an operating voltage via the NAND gate 42 to the electrical alarm device 4-3 and the U / P-tfandler 39 out. As long as the drive gas pressure from the drive gas conditioning 32 is applied to the F / Uv / aadler 4-4 remains

das.KAICD gate, 4-2 locked. falls; however, the drive gas pressure, the F / U vvandler also drops 4-4, so that the HAND gate. 4-2 turns on and the Alarmeinriciitung 43 warns the drive gas failure

 If there is a sleeplessness of the power supply, the ü / P-wanaler drops

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39, and on the inverted Singang of the inhibitor .40., Which in turn mechanically coupled with a second input inversion with the hand switch 8 mechanically and with its other input, directly with the drive gas processing 32 ver. is switched on, the failure is signaled at the pneumatic alarm device 4-1 '.

About the device outputs 21 and 30, the control of esternal accessories is possible, in which case the particular advantage is given that from the former the ventilation frequency and the Atemzeitverhältnis can be tapped and the second monitoring the function of the exhalation valve 12 as a function of. which, when the switch position is applied, two and three of the switch 8 also includes the control of the effectively acting ¹ ShZ respiration times.

Claims (6)

-13-Srf indungs.claim:. '- ·. , 1. Anesthesia ventilation ventilator with automatic and manual ventilation with a ".bellow in bottle" system for automatic operation and a manual ventilator bag for manual operation, characterized in that a circuit arrangement with a controller (3) for frequency and breath time ratio a Umsehalteinheit (4). which is signal-linked via a first U / P converter (5) and a second U / P converter (6) and a switch-off delay (7) to a switch (8) designed for multiple functions via a third U / P converter. Transducer (9) connected to the "bellow in bottle" system (1) and to the breathing gas connection (10) of a provided with an excess gas valve anesthesia circuit part (not shown) is connected, and that. (4) consists of a switching valve (11) with its associated hand-held breathing bag (2) and an exhalation valve (12) with an associated PSEP valve (13), of which the S-Ξΐη-gear of the switching valve ( 11) with the first U / P converter (5) and the 3-input of the exhalation valve (12) with the 'second ü / P-v7andler (6) is in communication, in turn via an ODSR gate (14) the switch-off delay (7) is signal-linked <> 2. The ventilator according to item 1, characterized in that the circuit arrangement is a combination of functional groups for constant volume ventilation, for pressure-constant ventilation, manual ventilation and for spontaneous breathing, which consists in a first 'part that supplied with electric power (15) and in Seihe with a first switching part of the switch (3), a voltage converter (16), a frequency divider (17) and a UIID -G-atter (18) connected control (3) on the one hand via signal lines (19, 20) - 14 - one to the device outlet (21) guided, with the U / P • converter (9), above this with a gas flow valve (22). and about this with a discharge valve (23) and the; ODSH gate (14 *) connected to the memory element (24), on the other hand with the signal line (20) has a connection to a UED gate (25) on the lase side via a signal line (14 ·) to one of Aus- Passage of voltage converter (16 ") to üi © gate (18) led, from a screening stage (27), a second Schaltte'il the switch (8) and a ODSH gate (28) best- hende function group and on the outlet side to the switch-off delay (7) is connected, which, with its inverse output together with the inverse output of a UGH gate (29) whose one input to the signal line. '(26) and whose other input to the output of the memory element . (24 *) and the OR gate (14-), is connected to the output (30). ' 3. ventilator according to item 1 and 2, characterized in that in a second part of the circuit arrangement an inlet side with the U / P- ^ andler. (9 ') signal-linked and via a drive gas processing (32) to a drive, gas connection (33) connected: UHD gate (31) in Heihe with a metering device (34-) and an injector (35) is connected, whose output: to the gas flow valve (22), to ^: an over pressure relief valve (36) and to a vacuum relief valve (37). as well as to the 'bellow in bottle' - 'system (1) connected'ist. ''. 4-, respirator according to item 1 "to 3, characterized in that the second switching part of the switch 8 has connections' at the two inputs of an ODEH gate (38), - 15 -. whose one input is still signal-linked to the 0D3R gate (23) and whose output to the ODSR gate (14). , 5 »Respirator after. Points 1 to 4, characterized in that the output of the screening stage (2?) Via a TJ / PV / andler (39) and an inhibitor (40) with a pneumatic alarm device (41) and via an ITAIJD gate (42) with an electrical Alanneinrichtung (43) and the output of the drive gas preparation (32) via the inhibitor (40) with. the pneumatic alarm device (41) and via a P / ü tfandler (44) and the ITAED gate (42) with the electrical alarm device (43) is connected. 6, respirator according to items 1 to 5 », characterized in that the signal connections of the functional groups are made via detachable connections of known design · '' ·. ^; ..;. '  Dazu_j2L.Seiten drawings