CN102500021B - Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine - Google Patents
Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine Download PDFInfo
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- CN102500021B CN102500021B CN201110298795.5A CN201110298795A CN102500021B CN 102500021 B CN102500021 B CN 102500021B CN 201110298795 A CN201110298795 A CN 201110298795A CN 102500021 B CN102500021 B CN 102500021B
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Abstract
The invention relates to an air channel system of a pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine. The air channel system is communicated with a user through an external interface, a communication pipeline and a Peep value (PEEP) and comprises an oxygen communication pipeline, a reduced pressure pump (REG1), an oxygen flow regulation valve (NV1), an air communication pipeline, an air inlet single-way valve (DV1), an air flow regulating valve (NV2) and a Venturi device (WENTURI), wherein the reduced pressure pump (REG1) and the oxygen flow regulation valve (NV1) are arranged on the oxygen communication pipeline; the air inlet single-way valve (DV1) and the air flow regulating valve (NV2) are arranged on the air communication pipeline; the output end of the Venturi device (WENTURI) is communicated with the external interface through a main pipeline, the input end of the Venturi device (WENTURI) is communicated with the oxygen communication pipeline, the bypass of the Venturi device (WENTURI) is communicated with the air communication pipeline; Peep valve controls a branch air channel as well as a proportion solenoid valve (PSOL1) and a safety solenoid valve (SOV1) which are arranged on the branch air channel; and the outlet end of the proportion solenoid valve (PSOL1) is communicated with the pneumatic control end of the Peep valve, the inlet end of the safety solenoid valve (SOV1) is communicated with the oxygen communication pipeline, and the air discharge end of the safety solenoid valve (SOV1) is communicated with the Venturi device (WENTURI). The air channel system is high in work stability, long in working life, continuous and adjustable in PEEP, high in safety coefficient and low in air consumption.
Description
Technical field
The present invention relates to medical electronics, be specifically related to a kind of can precise control, safety coefficient is higher and air consumption is low pilot-operated type intelligent breathing machine air-channel system.
Background technology
Respirator, is that a kind of normal physiological that can replace, control or change people is breathed, and increases pulmonary ventilation volume, improves respiratory function, alleviates work of breathing consumption, saves the device of heart reservation ability.It must possess following four basic functions:, to lung inflation, air-breathing to the conversion of exhaling, discharge alveolar gas and exhale to air-breathing conversion, moving in circles successively.Therefore correspondence must have: (1) the power of carrying gas can be provided, replace the work of human body respiration flesh; (2) can produce certain respiratory rhythm, comprise respiratory frequency and inspiratory/expiratory, to replace the function of human body respiration nervus centralis domination respiratory rhythm; (3) can provide suitable tidal volume (VT) or minute ventilation (MV), to meet the needs of respiratory metabolism; (4) the gas of supplying with, preferably through adding gentle humidifying, replaces human body nasal cavity function, and can supply with higher than amount of oxygen contained in atmosphere, to improve oxygen intake concentration, improves oxygenate.Power source: available Compressed Gas is used as power (pneumatic) or motor also can utilize the types such as pneumatic gas-control, electric electric-controlled, Pneumatic electrical control as power (electronic) respiratory frequency and inspiratory/expiratory, exhale the switching of phase when air-breathing, often when air-breathing, in respiratory cycle, reach after switching to expiration (level pressure type) after predetermined pressure or reaching predetermined volumes when air-breathing and switch to expiration (volum-controlled type), but modern ventilator all has above two kinds of forms concurrently.
Peep is end expiratory positive pressure, and in the time of end-tidal airway open, airway pressure is still kept above atmospheric pressure, to prevent that alveolar atrophy from subsiding.In the time that Peep increases extremely, the required acting of patient exhales increases and causes expiratory dyspnea, may cause asphyxiation hazard and work of breathing to increase.
At present, respirator employing air feed control electromagnetic valve is connected on the control mode before charge flow rate control valve, therefore the ventilation bore of air feed control electromagnetic valve needs enough large, use in the environment of high pressure, and need repeatedly open and close, like this to air feed control electromagnetic valve require highly, service life is short.
On the other hand, the applicant applies for China's invention " respiratory flow rhythm control air valve " simultaneously, discloses a kind of flow control valve, opens or closes by its pneumatic control end air pressure control main channel.The applicant is application China's invention " a kind of Peep security protection system and method thereof-" simultaneously also, discloses a kind of Peep safety device, carries out security protection by gas circuit structure, electronics and software control.
Summary of the invention
The technical issues that need to address of the present invention are, how a kind of pilot-operated type control band intelligence PEEP air channel system of breathing machine is provided, and can increase respirator security performance, improve the service life of respirator; Peep precise control, safety coefficient is higher and air consumption is low.
The above-mentioned technical problem of the present invention solves like this: build a kind of pilot-operated type control band intelligence PEEP air channel system of breathing machine, connect by external interface, connecting pipe and Peep valve and user, also comprise:
Oxygen connecting pipe and on gas circuit is ganged up from outside to inside drawdown pump and described oxygen flow rate adjusting valve;
Air communication pipeline and on gas circuit is ganged up from outside to inside breather check valve and air flow rate adjustment valve;
Venturi, outlet is communicated with described external interface by main pipeline gas circuit, and entrance gas circuit is communicated with described oxygen connecting pipe, and bypass gas circuit is communicated with described air communication pipeline;
Proportional solenoid and security solenoid valve that a Peep control gas circuit and upper gas circuit thereof are ganged up, the port of export gas circuit of described proportional solenoid is communicated with the pneumatic control end of described Peep valve, the arrival end gas circuit of described security solenoid valve is communicated with described oxygen connecting pipe, and the exhaust end gas circuit of described security solenoid valve is communicated with described Venturi or main pipeline.
According to air channel system of breathing machine provided by the invention, oxygen connecting pipe, air communication pipeline and main pipeline form the main gas circuit of this air-channel system.
According to air channel system of breathing machine provided by the invention, also comprise: air feed control electromagnetic valve, its arrival end gas circuit is communicated with the oxygen connecting pipe before the inlet end of described oxygen flow rate adjusting valve, port of export gas circuit is communicated with the pneumatic control end of described oxygen flow rate adjusting valve, and exhaust end gas circuit is communicated with described Venturi or main pipeline.
According to air channel system of breathing machine provided by the invention, described oxygen connecting pipe and described air communication pipeline are all also ganged up the filter at air inlet front end position separately.
According to air channel system of breathing machine provided by the invention, on described oxygen connecting pipe, contact from outside to inside, successively oxygen filter, described drawdown pump and oxygen flow rate adjusting valve.
According to air channel system of breathing machine provided by the invention, also comprise the relief valve being communicated with described main pipeline by safety support gas circuit.
According to air channel system of breathing machine provided by the invention, also comprise the free breather valve being communicated with described main pipeline by freely breathing a gas circuit.
According to air channel system of breathing machine provided by the invention, one end that a described Peep control gas circuit is positioned at described proportional solenoid also comprises that another outlet externally connects by vapour lock.
According to air channel system of breathing machine provided by the invention, gang up in addition the part that built-in flow transducer on main pipeline also belongs to main gas circuit, in a broad sense, also comprise the various sensors in gas circuit.
Air channel system of breathing machine provided by the invention, the security solenoid valve, the small-bore air feed control electromagnetic valve that have adopted Venturi, Peep to control, each sensor in associative processor, control circuit and program and gas circuit, can improve Peep controls safety and accuracy, and adjusts as required oxygen concentration, accurately controls respiratory rhythm etc., improve product whole service life and job stability, prior art has following advantage relatively:
1, adopt pilot valve control mode.The pilot-actuated valve that air feed control electromagnetic valve is flow control valve, changes the electromagnetic valve of air feed control in the past and connects with flow control valve, and air feed control electromagnetic valve is as the control mode of switch valve.Air feed control electromagnetic valve only, by controlling gas, does not need by main flow gas, and its latus rectum requires very little, and the volume of air feed control electromagnetic valve is very little.Thereby respiratory flow rhythm and pace of moving things control section can unite two into one, and overall volume is very little.Make air feed control magnetic valve performance more stable, control more accurately, the life-span is longer;
2, adopt Venturi.Can effectively reduce oxygen concentration, by the latus rectum of adjust flux control valve, the oxygen concentration that can realize respirator is adjustable continuously, meets the concrete needs of user.Adopt this device simultaneously, by air amount, reduce the oxygen consumption of gas cylinder, increase the service time of gas cylinder;
3, electronics is accurately controlled, exhale last malleation continuously adjustable, safety coefficient is high, air consumption is low, when system detects when abnormal, controls security solenoid valve and closes, and ensures that patient exhales is smooth and easy, guarantees patient safety.It is little that the proportional solenoid that this air-channel system uses simultaneously has flow, mates use with the vapour lock of high-drag, can reduce source of the gas loss.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, further the present invention is described in detail.
Fig. 1 is specific embodiment of the invention gas circuit structure schematic diagram;
Fig. 2 is control sequence schematic flow sheet in respirator shown in Fig. 1.
Wherein Reference numeral:
F1-oxygen filter, PQ1-high-pressure sensor, REG1-air relief valve, CV1-air feed control electromagnetic valve, NV1-oxygen flow rate adjusting valve, WENTURI-Venturi, the built-in flow transducer of FQ1-, SV1-relief valve, OS-oxygen cell, DV1-check valve, PQ2-the first low-pressure sensor, the external flow transducer of FQ2-, F2-air filter, the free outlet valve of EV1-, NV2-air flow rate adjustment valve, EMS-patient respiratory valve, PQ3-the second low-pressure sensor, PEEP-Peep valve, SOV1-security solenoid valve, PSOL1-proportional solenoid, AR3-vapour lock, HEM-humidifier.
Detailed description of the invention
First, gas circuit key of the present invention is described:
(i) Peep control gas circuit and on the proportional solenoid PSOL1 and the security solenoid valve SOV1 that gang up, closed safe electromagnetic valve SOV1 in the time that pressure is excessive, user can freely be breathed, and improves safety;
(ii) Venturi and subsidiary conduit structure, can, from bypass air amount, realize the mixing of air and oxygen, reduces oxygen concentration;
(iii) the oxygen flow rate adjusting valve NV1 that air feed control electromagnetic valve CV1 controls, adopts non-series arrangement, and the inside latus rectum of air feed control electromagnetic valve CV1 can be very little.
The second, the air-channel system structure of the specific embodiment of the invention is described:
The Peep air channel system of breathing machine of the specific embodiment of the invention and the sensor on it, structure as shown in Figure 1, comprise that main gas circuit, Peep control gas circuit and other branch air path, main gas circuit comprises two entrances, an outlet, corresponding oxygen connecting pipe, air communication pipeline and main pipeline respectively, three device for cleaning pipelines are crossed Venturi WENTURI and are communicated with, and air communication pipeline is bypass, and this air-channel system is described as follows:
Venturi WENTURI, can, from bypass air amount, realize the mixing of air and oxygen, reduces oxygen concentration.
Oxygen connecting pipe, can connect oxygen cylinder, accesses high pressure oxygen, enters Venturi WENTURI through oxygen filter F1, drawdown pump REG1 and oxygen flow rate adjusting valve NV1 successively, air in air amount connecting pipe; Oxygen flow rate adjusting valve NV1 can pass through the flow velocity of manual adjustments oxygen, controls the size of the tidal volume of respirator system; High-pressure sensor PQ1 is also set on oxygen connecting pipe.
Peep controls a gas circuit, gas circuit and two-way air feed control electromagnetic valve CV1 are propped up in air feed control, the connection of two-way air feed control electromagnetic valve CV1 arrival end is positioned at the oxygen connecting pipe before described charge flow rate control valve NV1 inlet end, the port of export props up gas circuit by air feed control and is communicated with oxygen flow rate adjusting valve NV1 pneumatic control end, oxygen flow rate adjusting valve NV1 is by the outlet port controlling of two-way air feed control electromagnetic valve CV1, thereby start signal control air feed control electromagnetic valve CV1 action is connected source of the gas and is opened oxygen flow rate adjusting valve NV1, and respirator system is to user air feed; Shutdown signal control air feed control electromagnetic valve CV1 transposition, (disconnect source of the gas and switch to aerofluxus, being communicated with Venturi WENTURI by air feed control electromagnetic valve CV1 exhaust end gas circuit) oxygen flow rate adjusting valve NV1 closes, and respirator system stops air feed, and at this moment user is exhaled; Oxygen connecting pipe controls by Peep the pneumatic control end that a gas circuit is communicated with Peep valve PEEP, and this Peep controls the security solenoid valve SOV1 and the proportional solenoid PSOL1 that in a gas circuit, sequentially arrange, and Peep controls a gas circuit also by the external conducting of vapour lock AR3.Vapour lock AR3, mates use with proportional solenoid PSOL1, stablizes Peep pressure.An in use direct exhaust.Proportional solenoid PSOL1 is by software system control, and its aperture of controllable adjustable, mates use with vapour lock AR3, regulates Peep pressure; Security solenoid valve SOV1 is normally open valve (arrival end and port of export normal open), in the situation that proportional solenoid PSOL1 breaks down, closes, and ensures the safety of Peep Use of respirator.In the situation that not using Peep function, can be by signal controlling, realize the exhaust end of close/open security solenoid valve SOV1, the port of export of security solenoid valve SOV1 is communicated with arrival end or exhaust end, when aerofluxus, gas circuit is communicated with Venturi WENTURI, and the free breather valve EV1 of Synchronization Control opens or closes.
Air communication pipeline, access extraneous air, enters Venturi WENTURI through air filter F2, breather check valve DV1 and air flow rate adjustment valve NV2 successively; Breather check valve DV1 ensure air thus pipeline enter respirator, and in any case the air feed of system not thus pipeline leak in air.
Main pipeline, on it, gang up built-in flow transducer FQ1, outlet is connected user by connecting pipe with patient respiratory valve EMS, oxygen cell OS and the first low-pressure sensor PQ2 are also set on main pipeline, wherein: oxygen cell OS can detect respirator system and offer the oxygen concentration of user, and the signal of detection is offered to software system; Built-in low-pressure sensor PQ2 detects the actual pressure of patient inhales, and signal is offered to software system.
Safety support gas circuit and relief valve SV1, be communicated with main pipeline, and relief valve SV1 realizes air channel system of breathing machine and supply with the pressure of user and be no more than the setting value of relief valve, ensures air-breathing safety.
Freely breathe gas circuit and a free outlet valve EV1, be communicated with main pipeline, free outlet valve EV1 normally open valve, opened or closed by signal of telecommunication Synchronization Control, the air feed that can ensure respirator gas circuit while closing is tight, can discharge the residue air pressure in air flue when unlatching, ensures the smooth and easy of patient exhales.Under respirator such as quits work at the Fisrt fault, patient from then on valve inhales people's air, ensures not suffocated of patient.
The air channel system of breathing machine of the specific embodiment of the invention also comprises:
Peep valve PEEP, regulates Peep pressure by pneumatic control end;
Humidifier HEM, to gas cylinder dry gas humidification out, makes patient respiration more comfortable;
External flow transducer FQ2, is arranged near user end, than the more stable flow that detects more accurately of built-in flow transducer;
The second low-pressure sensor PQ3, detects near patient end, and accuracy of detection is higher.
The two-way air feed control electromagnetic valve CV1 of this air-channel system or two-way security solenoid valve SOV1, all comprise arrival end, the port of export and exhaust end, switch arrival end by signal of telecommunication control and be communicated with the port of export or the port of export is communicated with exhaust end, when aerofluxus, gas flows to exhaust end from the port of export.
Finally, in conjunction with the method for work of the processor Internal Control Procedure explanation specific embodiment of the invention coordinating with air-channel system and principle as shown in Figure 2, this control sequence is that multi-task parallel mode is moved, and specifically comprises the following steps:
According to the setting of respirator system, the opening and closing time of system signal control air feed control electromagnetic valve CV1 action control oxygen flow rate adjusting valve NV1, realize the needed respiratory frequency of patient and inspiratory/expiratory;
Regulate oxygen flow rate adjusting valve NV1, realize the needed inspiratory flow of patient and regulate.The flow of flow transducer FQ1 real-time monitoring system, by data feedback to software system;
In the time of patient inhales, provide high pressure of PEEP at respirator system control ratio electromagnetism PSOL1, ensure that PEEP control terminal is air tight.In the time of patient exhales, respirator system control ratio electromagnetism PSOL1 provides the PEEP force value of a setting, maintains the last malleation of exhaling of patient.
Separately, the respective operations that " changes valve state according to goal condition " in Fig. 2 has: 1: change valve state according to breathing parameters; 2: realize respective objects value (as the Peep pressure of specifying) according to monitoring of respiration parameter control valve state.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the claims in the present invention scope change and modify, and all should belong to the covering scope of the claims in the present invention.
Claims (6)
1. a pilot-operated type control band intelligence PEEP air channel system of breathing machine, connects by external interface, connecting pipe and Peep valve (PEEP) and user, it is characterized in that, comprising:
Oxygen connecting pipe and on gas circuit is ganged up from outside to inside drawdown pump (REG1) and oxygen flow rate adjusting valve (NV1);
Air communication pipeline and on gas circuit is ganged up from outside to inside breather check valve (DV1) and air flow rate adjustment valve (NV2);
Venturi (WENTURI), outlet is communicated with described external interface by main pipeline gas circuit, and entrance gas circuit is communicated with described oxygen connecting pipe, and bypass gas circuit is communicated with described air communication pipeline;
Proportional solenoid (PSOL1) and security solenoid valve (SOV1) that a Peep control gas circuit and upper gas circuit thereof are ganged up, the port of export gas circuit of described proportional solenoid is communicated with the pneumatic control end of described Peep valve, the arrival end gas circuit that is positioned at described security solenoid valve is communicated with described oxygen connecting pipe, and the exhaust end gas circuit of described security solenoid valve is communicated with described Venturi or main pipeline.
2. air channel system of breathing machine according to claim 1, it is characterized in that, also comprise: air feed control electromagnetic valve (CV1), its arrival end gas circuit is communicated with the oxygen connecting pipe before the inlet end of described oxygen flow rate adjusting valve (NV1), port of export gas circuit is communicated with the pneumatic control end of described oxygen flow rate adjusting valve (NV1), and exhaust end gas circuit is communicated with described Venturi or main pipeline.
3. air channel system of breathing machine according to claim 1, is characterized in that, described oxygen connecting pipe and described air communication pipeline all gas circuit are ganged up the filter at air inlet leading portion position separately.
4. air channel system of breathing machine according to claim 1, is characterized in that, also comprises the relief valve (SV1) being communicated with described main pipeline gas circuit by safety support gas circuit.
5. air channel system of breathing machine according to claim 1, is characterized in that, also comprises the free breather valve (EV1) being communicated with described main pipeline gas circuit by freely breathing a gas circuit.
6. air channel system of breathing machine according to claim 1, is characterized in that, described Peep controls the port of export that a gas circuit is positioned at described proportional solenoid and also comprises that another outlet is by externally aerofluxus of vapour lock (AR3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110298795.5A CN102500021B (en) | 2011-09-28 | 2011-09-28 | Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110298795.5A CN102500021B (en) | 2011-09-28 | 2011-09-28 | Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine |
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| Publication Number | Publication Date |
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| CN102500021A CN102500021A (en) | 2012-06-20 |
| CN102500021B true CN102500021B (en) | 2014-07-30 |
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| CN201110298795.5A Expired - Fee Related CN102500021B (en) | 2011-09-28 | 2011-09-28 | Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793959B (en) * | 2012-08-14 | 2015-01-21 | 苏州品诺维新医疗科技有限公司 | Respirator air path system for stabilizing air and oxygen mixed tidal volume |
| CN104841055B (en) * | 2015-04-21 | 2017-11-14 | 深圳市科曼医疗设备有限公司 | Control method, the device and system of lung ventilator PEEP valves |
| CN105013057B (en) * | 2015-07-28 | 2018-05-04 | 深圳市安保科技有限公司 | A kind of end-expiratory positive pressure control system and method |
| CN105169539B (en) * | 2015-10-30 | 2017-12-26 | 深圳市普博科技有限公司 | A kind of first-aid respirator |
| CN106769148B (en) * | 2016-12-29 | 2023-07-21 | 南京舒普思达医疗设备有限公司 | Safety and performance detection equipment for anesthesia respiratory system |
| CN107320825A (en) * | 2017-08-21 | 2017-11-07 | 河北爱西欧医疗设备科技有限公司 | Malleation humidification oxygen therapy instrument and its application method |
| CN109011090B (en) * | 2018-07-02 | 2021-04-20 | 南京乐基医疗器械有限公司 | Air-oxygen mixed gas circuit design and breathing machine with same |
| CN110464950B (en) * | 2019-08-29 | 2022-01-25 | 宁波戴维医疗器械股份有限公司 | High-frequency respirator system and ventilation control method |
| CN110464951B (en) * | 2019-08-29 | 2022-04-08 | 宁波戴维医疗器械股份有限公司 | High-frequency respirator system and ventilation control method |
| CN110464949B (en) * | 2019-08-29 | 2022-07-12 | 宁波戴维医疗器械股份有限公司 | High-frequency respirator system |
| CN111632250A (en) * | 2020-06-08 | 2020-09-08 | 山东科技大学 | Humidification therapeutic apparatus for monitoring mixture of air and oxygen and monitoring method thereof |
| CN113769214A (en) * | 2021-08-23 | 2021-12-10 | 河南辉瑞生物医电技术有限公司 | Control system of breathing machine |
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| US4020834A (en) * | 1975-05-16 | 1977-05-03 | Bird F M | Respirator and method |
| CN102114301A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | PEEP (positive end expiratory pressure) valve and respirator with same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007101124A2 (en) * | 2006-02-23 | 2007-09-07 | Spacelabs Healthcare | Ventilator for rapid response to respiratory disease conditions |
| US8020558B2 (en) * | 2007-01-26 | 2011-09-20 | Cs Medical, Inc. | System for providing flow-targeted ventilation synchronized to a patient's breathing cycle |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4020834A (en) * | 1975-05-16 | 1977-05-03 | Bird F M | Respirator and method |
| CN102114301A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | PEEP (positive end expiratory pressure) valve and respirator with same |
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