WO2017063498A1 - Expectoration system - Google Patents

Expectoration system Download PDF

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WO2017063498A1
WO2017063498A1 PCT/CN2016/100104 CN2016100104W WO2017063498A1 WO 2017063498 A1 WO2017063498 A1 WO 2017063498A1 CN 2016100104 W CN2016100104 W CN 2016100104W WO 2017063498 A1 WO2017063498 A1 WO 2017063498A1
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coughing
joint
air pump
valve
port
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PCT/CN2016/100104
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French (fr)
Chinese (zh)
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许庆宾
徐恒谦
白海波
韩广
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濡新(北京)科技发展有限公司
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Priority to CN201510657436.2A priority Critical patent/CN105343944B/en
Priority to CN201510657436.2 priority
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Publication of WO2017063498A1 publication Critical patent/WO2017063498A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/0023Suction drainage systems
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/0023Suction drainage systems
    • A61M1/0031Suction control
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M16/0009Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0051Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057Pumps therefor
    • A61M16/0066Blowers or centrifugal pumps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/021Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022Control means therefor
    • A61M16/024Control means therefor including calculation means, e.g. using a processor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816Joints or connectors
    • A61M16/0833T- or Y-type connectors, e.g. Y-piece
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20Valves specially adapted to medical respiratory devices
    • A61M16/201Controlled valves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20Valves specially adapted to medical respiratory devices
    • A61M16/201Controlled valves
    • A61M16/202Controlled valves electrically actuated

Abstract

An expectoration system comprises an expectoration pipe (20) comprising a throttling device (21) and a balloon valve (19); an expectoration machine (1), comprising a main pipe assembly (15), an air pump assembly (2) and a control system (8). The main pipe assembly (15) comprises a fan (16) and a shutter valve (17). The air pump assembly (2) comprises a first air pump (6) and a second air pump (3). The control system (8) comprises a first sensor (12) for measuring an air pressure of the throttling device (21), and comprises a microcomputer control unit. The microcomputer control unit determines a patient being in an exhaling or inhaling stage by means of an air pressure difference detected by the first sensor (12); during expectoration, the first air pump (6) supplies air to the balloon valve (19) to disconnect a respirator air path, the fan (16) and shutter valve (17) are opened to control the second air pump (3) to supply air to the throttling device (21), and a respirator does not stop running in the expectoration sage.

Description

咳痰系统Cough system 技术领域Technical field
本发明涉及一种医疗护理设备,具体地说,涉及一种咳痰系统。The present invention relates to a medical care device, and in particular to a cough system.
背景技术Background technique
对于因为各种原因所致的呼吸衰竭、包括呼吸窘迫综合征(ARDS)、重度急性肺水肿和哮喘、呼吸功能不全和大手术中的病人,呼吸机是必须的重要生命支持设备。对于上了呼吸机的病人,痰液的及时有效清除是很重要的,如果痰在呼吸道内不及时排出,浓痰及痰痂易聚集并堵塞支气管管腔,严重影响患者的通气功能,加重呼吸衰竭,甚至引起继发性肺不张。痰液还是细菌繁殖的温床,细菌对患者呼吸器官造成感染,使患者很容易发生呼吸机相关性肺炎(VAP)。但是,机械通气病人因失去咳嗽功能,肺功能严重衰退、呼吸肌无力等原因,病人往往不能自行排痰,分泌物显著增加;另外,机械通气病人多处于意识障碍,全身衰竭状态,咳嗽排痰功能降低,使原有的呼吸系统疾病及呼吸衰竭加重;气管插管及气管切开使咽喉部自然屏障破坏,削弱气道纤毛的清洁作用,削弱咳嗽、咳痰的反射机制。因此,对于机械通气病人来讲,持续有效的祛除痰液是预防气道阻塞,维持机械通气的关键。The ventilator is an essential life support device for respiratory failure due to various causes, including respiratory distress syndrome (ARDS), severe acute pulmonary edema and asthma, respiratory insufficiency, and major surgery. For patients who have been in the ventilator, timely and effective removal of sputum is very important. If sputum is not discharged in the respiratory tract, concentrated sputum and sputum tend to accumulate and block the bronchial lumen, which seriously affects the patient's ventilatory function and aggravates breathing. Failure, and even cause secondary atelectasis. Sputum is also a breeding ground for bacterial growth. Bacteria infect respiratory organs and make patients susceptible to ventilator-associated pneumonia (VAP). However, due to the loss of cough function, severe lung function decline, respiratory muscle weakness, etc., patients with mechanical ventilation often cannot discharge their own sputum and the secretions increase significantly. In addition, mechanically ventilated patients are mostly in the state of consciousness, systemic failure, cough and expectoration. Reduced function, the original respiratory diseases and respiratory failure worse; tracheal intubation and tracheotomy to destroy the natural barrier of the throat, weaken the cleansing effect of airway cilia, and weaken the reflex mechanism of cough and cough. Therefore, for mechanically ventilated patients, continuous and effective sputum removal is the key to prevent airway obstruction and maintain mechanical ventilation.
常规的吸痰方式是吸痰管吸痰,它是用一个细小的导管经过气管插管或气管切开管,插入病人的气道,通过细小导管内持续的负压吸引,把痰液从病人体内吸出。当导管与分泌物接近时,分泌物被吸走。然而这种吸痰方法的缺点也是明显的,首先它是一种侵入式的吸痰,由于导管的插入和移动,容易对气道造成伤害甚至气道疤痕增加气道分泌物的产生,使痰越吸越多。同时,加重低氧血症,不能即时清除痰液,增加感染和出血的危险。对于大多数病人来说是非常痛苦的体验。The conventional suction method is suction tube suction, which uses a small catheter through the tracheal intubation or tracheotomy tube, inserted into the patient's airway, through the continuous negative pressure suction in the small catheter, the sputum from the patient Aspirate in the body. When the catheter is close to the secretions, the secretions are aspirated. However, the disadvantages of this method of suction are also obvious. First, it is an invasive suction. Because of the insertion and movement of the catheter, it is easy to cause damage to the airway and even the airway scar increases the secretion of airway secretion. The more you smoke, the more you smoke. At the same time, aggravating hypoxemia, can not immediately remove sputum, increasing the risk of infection and bleeding. It is a very painful experience for most patients.
机械通气病人气道分泌物清除的另一种方法是使用普通的咳痰机,例如飞利 浦公司的coughassist,它在咳痰时,首先,病人的肺吸入接近最大潮气量的空气,然后快速而突然地以最高速率呼出吸入肺内的空气,由于空气以极高的速率从病人肺内呼出,气流将能携带分泌物上行,并且从病人气道内以很高的流速流出,从而达到清除病人分泌物的目的。它清除分泌物实质是一种模拟咳痰的方式,这种咳痰机可以通过气管插管、气管切管或面罩同病人气道连接。这种咳痰方式应该比前述的吸痰管吸痰要好很多,首先,它是一种非侵入式吸痰。其次,咳痰机产生的是在病人整个气道直径、长度范围内流动的高速气流,因此能起到从整个气道清除分泌物的作用。而吸痰管吸痰只是在细小导管内部产生的一个低速气流,其次,由于吸痰管尺寸的限制,吸痰管只能接近较大的气道,而对于那些小的更多级的分支气道,则无能为力。还有病人左右支气管的分支形状,决定了吸痰管在插入病人支气管吸痰时,通常只能插入右边的气道,左边的气道无法吸痰。在吸痰时,病人呼吸道的绝大部分没有同吸痰管和吸引气流接触,只能在吸痰管附近吸除一点点痰液。而咳痰机咳痰,分泌物则是被病人气道内的气流整体移除。Another way to remove airway secretions from mechanically ventilated patients is to use a common coughing machine, such as a Philippine Pu's coughassist, when coughing, first, the patient's lungs inhale the air close to the maximum tidal volume, then quickly and suddenly exhale the air inhaled into the lungs at the highest rate, because the air is at a very high rate from the patient's lungs Exhaled, the airflow will carry the secretions up and out at a very high flow rate from the patient's airway to achieve the purpose of clearing the patient's secretions. Its clearing of secretions is essentially a way of simulating coughing, which can be connected to the patient's airway through a tracheal intubation, tracheal incision or mask. This coughing method should be much better than the aforementioned suction tube suction. First, it is a non-invasive suction. Secondly, the coughing machine produces a high-speed airflow that flows throughout the diameter and length of the patient's airway, thus acting to remove secretions from the entire airway. The suction tube suction is only a low-speed airflow generated inside the small catheter. Secondly, due to the size limitation of the suction tube, the suction tube can only approach the larger air passage, and for those smaller and larger levels of branch gas. Road, there is nothing to do. There is also the branch shape of the patient's left and right bronchus, which determines that the suction tube can only be inserted into the right airway when inserted into the patient's bronchial suction. The airway on the left side cannot be sucked. At the time of sucking, most of the patient's respiratory tract does not come into contact with the suction tube and the suction airflow, and only a little sputum can be removed near the suction tube. The coughing machine coughs and the secretions are removed by the airflow in the patient's airway.
但是,咳痰机也有缺点,例如,给机械通气病人咳痰时,需要切断呼吸机与病人的通气管路,将咳痰机与病人连接才能执行咳痰操作。但是对于上了呼吸机的机械通气病人,尤其是对于危重病人,频繁地切断呼吸机与病人的通气管路可能导致病情恶化。咳痰机采用周期循环停止病人吸气阶段,它可能会带来一些问题,因为对于通气病人来说,容积循环或流量循环模式是更安全、更有效的。此外,咳痰机没有呼气末正压功能(PEEP),其在咳痰末段气道内的压力只能约等于大气压。而呼气末正压在治疗呼吸窘迫综合征ARDS、非心源性肺水肿、肺出血时起重要作用,同时可以促进痰液清除。而咳痰机对于上述症状病人是不适用的,另外,咳痰机没有生命支持设备所配备的报警系统,使用的安全性也无法得到保证。However, cough machines also have disadvantages. For example, when coughing a mechanically ventilated patient, it is necessary to cut off the ventilation line of the ventilator and the patient, and connect the coughing machine to the patient to perform a coughing operation. However, for mechanically ventilated patients who are on a ventilator, especially for critically ill patients, frequent disconnection of the ventilator from the ventilator of the patient may result in worsening of the condition. The coughing machine uses a periodic cycle to stop the patient's inhalation phase, which can cause problems because the volumetric or flow-circulation mode is safer and more effective for ventilated patients. In addition, the coughing machine does not have a positive end expiratory pressure (PEEP) function, and its pressure in the airway at the end of the cough can only be approximately equal to atmospheric pressure. Positive end-expiratory pressure plays an important role in the treatment of respiratory distress syndrome ARDS, non-cardiogenic pulmonary edema, pulmonary hemorrhage, and can promote sputum clearance. The coughing machine is not suitable for patients with the above symptoms. In addition, the coughing machine does not have an alarm system equipped with life support equipment, and the safety of use cannot be guaranteed.
常规的咳痰机咳痰无论是吸气还是咳痰,都是采用同一条管路,咳痰时的气流包含病人的分泌物,这些分泌物可能含有大量细菌,这些分泌物堆积暴露在气管中,与病人吸气气流反复接触,给病人带来二次感染的风险。Conventional coughing machines, whether inhaling or coughing, use the same line. The coughing airflow contains the patient's secretions, which may contain large amounts of bacteria that are exposed to the trachea. Repeated contact with the patient's inspiratory flow, which brings the risk of secondary infection to the patient.
还有,咳痰机的吸气和咳痰都采用同一个风机,吸气和咳痰时风机直面可能含有细菌的气流和痰液,如不同的病人使用同一台咳痰机,潜在地降低了风机的使用寿命和增加了不同病人之间交叉感染的风险。 In addition, the coughing machine uses the same fan for inhalation and coughing. When inhaling and coughing, the face of the fan may contain bacterial airflow and sputum. If different patients use the same cough machine, the potential is reduced. The life of the fan increases the risk of cross-contamination between different patients.
专利WO2007054829提出了一种与呼吸机联合工作,辅助病人呼吸、咳嗽,去除病人气道分泌物的咳痰机,它和飞利浦coughassist的区别在于:给病人进行正压通气的气源不再使用咳痰机内部的风机,而是采用给病人机械通气的呼吸机。病人的呼吸和咳痰采用不同的管路,在呼吸管路与咳痰管路分别设有开关阀,当呼吸机正常给病人通气时,设在呼吸管路上的开关阀是打开的,而咳痰管路上的开关阀处于关闭状态。当病人吸气结束,即将进入呼气状态时,咳痰管路上的阀门打开,咳痰机开始咳痰。咳痰结束后,咳痰管路上的阀门关闭,呼吸管路上的阀门打开,病人进入吸气状态,依此循环。Patent WO2007054829 proposes a coughing machine that works in conjunction with a ventilator to assist the patient in breathing, coughing, and removing airway secretions from the patient. It differs from the Philips coughassist in that the source of positive pressure ventilation for the patient no longer uses cough. Instead of a fan inside the machine, a ventilator that mechanically ventilates the patient is used. The patient's breathing and coughing use different pipelines. The breathing circuit and the coughing tube are respectively provided with on-off valves. When the ventilator is normally ventilated to the patient, the on-off valve provided on the breathing circuit is opened, and the cough is opened. The on/off valve on the 痰 line is closed. When the patient inhales and is about to enter the exhalation state, the valve on the coughing tube opens and the coughing machine begins to cough. After the cough is over, the valve on the cough line is closed, the valve on the breathing line is opened, and the patient enters the inspiratory state and circulates accordingly.
与飞利浦的coughassist咳痰机相比,执行吸痰时不需要拆掉病人和呼吸机的连接管路,因此,病人不会中断呼吸机治疗,尤其对于需要由给予呼吸机PEEP治疗的病人,临时的中断更是不利的,并且PEEP更有利于咳痰。同时,由于飞利浦咳痰机需要拆掉呼吸机才能咳痰,因此,只能隔一定阶段才能咳痰,痰液不能即时清除。而专利WO2007054829由于不存在咳痰拆呼吸机的问题,因此,可以随时、即时咳痰。病人吸气和咳痰采用不同的管路,降低了病人二次感染的风险,给病人正压通气和负压咳痰分别采用呼吸机和咳痰机内部的负压风机,避免了病人之间的交叉感染,提高了风机使用寿命。Compared with Philips' coughassist coughing machine, it is not necessary to remove the connecting line between the patient and the ventilator when performing suction. Therefore, the patient does not interrupt the ventilator treatment, especially for patients who need to be treated with PEEP. The interruption is even more unfavorable, and PEEP is more conducive to coughing. At the same time, because the Philips cough machine needs to remove the ventilator to cough, it can only cough at a certain stage, and the sputum can not be removed immediately. The patent WO2007054829 has a problem of coughing and disassembling the ventilator, so that it can cough at any time and immediately. The patient uses different pipelines for inhalation and coughing, which reduces the risk of secondary infection of the patient. The patient's positive pressure ventilation and negative pressure cough are respectively used in the ventilator and the negative pressure fan inside the coughing machine to avoid the patient. Cross-infection improves the life of the fan.
但是WO2007054829发明在实施中依然有很多问题,比如噪声过大,散热不好,在咳痰时会影响呼吸机的工作甚至报警,系统的安全性存在隐患,对临床的适应能力较差等,本发明有效解决了WO2007054829发明存在的问题,是对该发明的框图性方案的工程实施,并进一步对WO2007054829专利进行了细化、丰富和完善。However, the invention of WO2007054829 still has many problems in the implementation, such as excessive noise, poor heat dissipation, affecting the work of the ventilator and even the alarm when coughing, the safety of the system has hidden dangers, and the ability to adapt to the clinic is poor. The invention effectively solves the problems existing in the invention of WO2007054829, is an engineering implementation of the block diagram scheme of the invention, and further refines, enriches and perfects the WO2007054829 patent.
发明内容Summary of the invention
针对上述现有技术存在的问题,本发明提出一种咳痰系统,包括:咳痰机和咳痰管路,In view of the above problems in the prior art, the present invention provides a cough system comprising: a coughing machine and a coughing tube,
咳痰管路包括节流装置和球囊阀,其中球囊阀为一两通阀,其一个端口为呼吸机端口,通过节流装置连接到呼吸机,另一端口分成两支,一支为咳痰机端口,连接咳痰机,另一支为病人端口,连接病人;The coughing tube includes a throttling device and a balloon valve, wherein the balloon valve is a two-way valve, one port is a ventilator port, connected to the ventilator through a throttling device, and the other port is divided into two, one for a coughing machine port, connected to a coughing machine, and the other is a patient port to connect the patient;
咳痰机包括主管路组件、气泵组件和控制系统,主管路组件包括产生负压的 风机以及在咳痰时开启的快门阀;气泵组件包括向球囊阀供气的第一气泵和向节流装置供气的第二气泵;以及控制系统用于控制主管路组件和气泵组件,控制系统包括用于测量节流装置处的气压的第一传感器和微机控制单元;The coughing machine includes a main line assembly, a gas pump assembly, and a control system, and the main line assembly includes a negative pressure generating a fan and a shutter valve that opens when coughing; the air pump assembly includes a first air pump that supplies air to the balloon valve and a second air pump that supplies air to the throttle device; and a control system that controls the main line assembly and the air pump assembly, and controls The system includes a first sensor and a microcomputer control unit for measuring air pressure at the throttle device;
其中,微机控制单元通过第一传感器检测的气压差判断病人处于呼吸阶段或者吸气阶段,当病人处于吸气阶段向呼气阶段转换时,微机控制单元控制第一气泵向球囊阀的球囊供气以断开呼吸机端口至病人端口的气路,控制系统打开风机和快门阀以辅助病人咳痰,同时,微机控制单元控制第二气泵向节流装置供气,在咳痰期间,呼吸机不停止工作。Wherein, the microcomputer control unit determines that the patient is in the breathing phase or the inhalation phase by the air pressure difference detected by the first sensor, and the microcomputer control unit controls the balloon of the first air pump to the balloon valve when the patient is in the inhalation phase to the exhalation phase. Air supply to disconnect the ventilator port to the patient port, the control system opens the fan and shutter valve to assist the patient cough, while the microcomputer control unit controls the second air pump to supply air to the throttling device, during the cough, breathing The machine does not stop working.
本发明提出的咳痰吸痰能够全自动工作,与呼吸机配合使用时无需停止呼吸机,且不会影响呼吸机的正常工作。The cough sucking provided by the invention can work fully automatically, and it is not necessary to stop the ventilator when used together with the ventilator, and does not affect the normal operation of the ventilator.
附图说明DRAWINGS
图1为本发明的全自动咳痰系统气路原理图。1 is a schematic diagram of a gas path of a fully automatic cough system of the present invention.
图2是球囊阀的受力分析图。Figure 2 is a force analysis diagram of the balloon valve.
图3为气路组件的气路连接图。Figure 3 is a gas path connection diagram of the pneumatic circuit assembly.
具体实施方式detailed description
下面参照附图描述本发明的实施方式,其中相同的部件用相同的附图标记表示。Embodiments of the invention are described below with reference to the drawings, in which like parts are designated by the same reference numerals.
图1比较详细地描述了本发明的全自动咳痰系统的气路原理。其中全自动咳痰系统由两部分组成:咳痰机1和咳痰管路20。咳痰管路20是一次性用品,例如可以用医用塑料制成。Figure 1 illustrates in more detail the gas path principle of the fully automatic cough system of the present invention. The automatic cough system consists of two parts: a coughing machine 1 and a coughing line 20. The coughing line 20 is a disposable item, for example, can be made of medical plastic.
咳痰机1的主要功能是提供产生高速气流的负压,同时对整个系统的压力、流量、潮气量、时间等数据进行监测,并根据监测结果,进行分析、判断、计算,从而对系统实施有效控制,以及触发和停止咳痰。The main function of the coughing machine 1 is to provide negative pressure for generating high-speed airflow, and to monitor the pressure, flow, tidal volume, time and other data of the whole system, and analyze, judge and calculate according to the monitoring results, thereby implementing the system. Effective control, as well as triggering and stopping coughing.
咳痰管路20的核心部件是节流装置21和球囊阀19,咳痰管路20在病人、呼吸机和咳痰机1之间形成气路连通,提供接口供各种压力、流量传感器进行数据采集,同时在咳痰机1的控制下,完成呼吸机-病人和咳痰机-病人之间的气路切换。 The core components of the coughing circuit 20 are the throttling device 21 and the balloon valve 19, and the coughing line 20 forms a gas path connection between the patient, the ventilator and the coughing machine 1, providing an interface for various pressure and flow sensors. Data collection is performed, and at the same time, under the control of the coughing machine 1, the airway switching between the ventilator-patient and the coughing machine-patient is completed.
具体地,咳痰管路20的节流装置21上面有接口A和接口B。接口A连接到咳痰机1内的气泵组件2(下面详述)的第二气泵3,第二气泵3可以对接口A供气。接口B连接到咳痰机1内的气泵组件2的第三气泵5,第三气泵5可以对接口A供气。另外,接口A、B分别和咳痰机1内的压差传感器12(第一传感器)的两个输入口连接,构成了实质上的压差流量计。可选地,接口A连接到压力传感器12,接口B连接到压力传感器11(第二传感器),分别用这两个传感器检测这两个口的压力,从而压力传感器12和压力传感器11构成实质上的压差流量计。Specifically, the throttling device 21 of the coughing line 20 has an interface A and an interface B thereon. The interface A is connected to a second air pump 3 of the air pump assembly 2 (described in detail below) in the coughing machine 1, and the second air pump 3 can supply air to the interface A. The interface B is connected to the third air pump 5 of the air pump assembly 2 in the coughing machine 1, and the third air pump 5 can supply air to the interface A. Further, the interfaces A and B are respectively connected to the two input ports of the differential pressure sensor 12 (first sensor) in the coughing machine 1, and constitute a substantially differential pressure flowmeter. Optionally, the interface A is connected to the pressure sensor 12, and the interface B is connected to the pressure sensor 11 (second sensor), and the pressure of the two ports is detected by the two sensors, respectively, so that the pressure sensor 12 and the pressure sensor 11 constitute substantially Differential pressure flow meter.
球囊阀19是一个两通阀,包括连接呼吸机的呼吸机端口,另一端分成两支,一支是连接咳痰机的咳痰机端口,另一支是连接病人的病人端口。呼吸机端口和病人端口的通道是常开的,用于呼吸机向病人送气,但是通过球囊阀19可以关闭该气路。关闭的实现方式是在球囊阀19内部设置一个球囊,当球囊被充入气体膨胀时,体积增大,堵塞阀口,从而切断呼吸机-病人气路。咳痰机端口和病人端口的通道是常通的,但是由于快门阀17是常闭的,因此不会影响呼吸机对病人的供气,快门阀17只有在咳痰机工作时才打开,而且咳痰机工作时,通过向球囊阀19内部的球囊充气来关闭呼吸机-病人气路,以不影响咳痰机工作。当咳痰结束后,快门阀17关闭,球囊阀19内部的球囊被放气,球囊体积变小,阀口与球囊之间产生较大间隙,气流可以通过,实现接通气路的功能。另外,球囊阀19由咳痰机1内的气泵组件2的第一气泵6供气,第一气泵6的供气受气路组件2(下面详述)内的电磁阀4控制。The balloon valve 19 is a two-way valve that includes a ventilator port that connects to the ventilator, and the other end is divided into two, one is a coughing machine port that connects the coughing machine, and the other is a patient port that connects the patient. The passages of the ventilator port and the patient port are normally open for the ventilator to deliver air to the patient, but the balloon can be closed by the balloon valve 19. The closing is achieved by providing a balloon inside the balloon valve 19, which increases in volume when the balloon is inflated, clogging the valve port, thereby shutting off the ventilator-patient airway. The passage of the coughing machine port and the patient port is always open, but since the shutter valve 17 is normally closed, it does not affect the supply of air to the patient by the ventilator, and the shutter valve 17 is only opened when the coughing machine is working, and When the coughing machine is in operation, the ventilator-patient airway is closed by inflating the balloon inside the balloon valve 19 so as not to affect the operation of the coughing machine. When the cough is finished, the shutter valve 17 is closed, the balloon inside the balloon valve 19 is deflated, the volume of the balloon is reduced, and a large gap is generated between the valve port and the balloon, and the airflow can pass to realize the connection of the airway. The function. Further, the balloon valve 19 is supplied by the first air pump 6 of the air pump unit 2 in the coughing machine 1, and the air supply of the first air pump 6 is controlled by the electromagnetic valve 4 in the air path unit 2 (described in detail below).
优选地,当球囊阀19放气时,球囊阀19内的气体不是排放到大气中,而是主呼吸管路中,其目的是:如果球囊阀19内的空间直接与大气通联,由于某些病人的自主呼吸,可能导致主呼吸管路内的负压环境,在大气压与主呼吸管路负压压差的作用下,可能使偏软偏薄的球囊阀19切断呼吸管路或使呼吸管路变窄,从而危及病人生命(见图2),同时,每次咳痰后,从球囊阀19放出的气体还可以顺便对检测病人端口(图1中C处)压力的压力传感器9(第三传感器)的测控管路进行吹扫,防止该传感器的测控管路中有水滴或痰液,影响传感器工作。Preferably, when the balloon valve 19 is deflated, the gas in the balloon valve 19 is not discharged into the atmosphere, but in the main breathing circuit, the purpose of which is: if the space inside the balloon valve 19 is directly connected to the atmosphere, Due to the spontaneous breathing of some patients, it may cause a negative pressure environment in the main breathing circuit. Under the action of the negative pressure difference between the atmospheric pressure and the main breathing circuit, the soft and thin balloon valve 19 may be cut off. Or narrowing the breathing tube to endanger the patient's life (see Figure 2). At the same time, after each cough, the gas released from the balloon valve 19 can also be used to detect the pressure of the patient port (C in Figure 1). The measuring and controlling pipeline of the pressure sensor 9 (third sensor) is purged to prevent water droplets or sputum in the measuring and controlling pipeline of the sensor, which affects the operation of the sensor.
下面详细描述咳痰机1,咳痰机1由五个部件组成,包括:气泵组件2、气路组件22、主管路组件15、控制系统8和消声降噪系统18。 The coughing machine 1 is described in detail below. The coughing machine 1 is composed of five components, including: a gas pump assembly 2, a pneumatic circuit assembly 22, a main line assembly 15, a control system 8, and a noise reduction and noise reduction system 18.
气泵组件2包括三个微型气泵:第一气泵6、第二气泵3和第三气泵5。第一气泵6对球囊阀19的球囊进行供气。第二气泵3对节流装置21的接口A进行供气,第三气泵5对节流装置21的接口B进行供气。第二气泵3和第三气泵5有两个作用,第一个作用是避免呼吸机在咳痰机正常工作时报警。当咳痰开始后,由于呼吸机气路被切断,没有病人呼出的气体进入呼吸机呼气回路,呼吸机会误认为病人窒息、气管脱开或出现其他异常状况,从而会报警。第二气泵3和第三气泵5此时会提供足够流量的气流,通过节流装置21进入呼吸机呼气回路通道吹扫,从而避免呼吸机报警。除了避免呼吸机报警。另外,呼吸机在实际使用中,为了保证病人吸入的空气或氧气湿润,需要在管路里串接湿化瓶,因此呼吸管路里会随时凝结大量的液态水,病人呼出的气体也含有水分,还有,在给病人吸痰过程中,吸出的痰液也有可能附着或粘结在管路上,这种复杂的管路环境非常不利于各种传感器准确检测信号,尤其是液态水或痰液堆积在用于测控的极细的管路里。因此,第二气泵3和第三气泵5的第二个作用是定期对压力传感器11、差压传感器12和节流装置21之间的管路进行吹扫,以防止液态水或痰液影响传感器工作。其中,产生吹扫气流的动力元件不限于气泵、微型空压机,也可以使用风机、储存气体的高压力储罐,以上动力元件或储能元件单独、多个或联合使用,或收集风机排出的气体吹回呼吸机的呼气回路代替吹扫等,本实施例中采用两个高压第二气泵3和5并联供气,以满足瞬时大流量的需求。可选地,也可以采用一个气泵对节流装置21的接口A和接口B同时进行供气。The air pump assembly 2 includes three micro air pumps: a first air pump 6, a second air pump 3, and a third air pump 5. The first air pump 6 supplies air to the balloon of the balloon valve 19. The second air pump 3 supplies air to the interface A of the expansion device 21, and the third air pump 5 supplies air to the interface B of the expansion device 21. The second air pump 3 and the third air pump 5 have two functions. The first function is to prevent the ventilator from alerting when the coughing machine is working normally. When the cough begins, because the ventilator's airway is cut off, no gas exhaled by the patient enters the ventilator's exhalation circuit. The breathing opportunity mistakenly believes that the patient is suffocated, the trachea is disengaged, or other abnormal conditions occur, and an alarm is issued. The second air pump 3 and the third air pump 5 at this time provide a flow of sufficient flow to enter the ventilator expiratory circuit passage through the throttling device 21 to avoid ventilator alarms. In addition to avoiding ventilator alarms. In addition, in actual use, in order to ensure that the air or oxygen inhaled by the patient is wet, it is necessary to connect the humidifying bottle in series in the pipeline. Therefore, a large amount of liquid water is condensed at any time in the breathing pipeline, and the gas exhaled by the patient also contains moisture. Moreover, during the process of sucking the patient, the sucked sputum may also adhere or adhere to the pipeline. This complicated pipeline environment is very unfavorable for various sensors to accurately detect signals, especially liquid water or sputum. Stacked in a very thin pipeline for measurement and control. Therefore, the second function of the second air pump 3 and the third air pump 5 is to periodically purge the pipeline between the pressure sensor 11, the differential pressure sensor 12, and the throttle device 21 to prevent liquid water or sputum from affecting the sensor. jobs. Wherein, the power component that generates the purge airflow is not limited to the air pump or the micro air compressor, and the fan or the high pressure storage tank for storing the gas may be used, and the above power components or energy storage components are used alone, in multiple or in combination, or collected by the fan. The gas is blown back to the expiratory circuit of the ventilator instead of the purging, etc. In the present embodiment, two high-pressure second air pumps 3 and 5 are used in parallel to supply air to meet the demand of instantaneous large flow. Alternatively, an air pump may be used to simultaneously supply air to the interface A and the interface B of the throttling device 21.
气路组件22的功能是完成咳痰机1与咳痰管路20的气路连通以及控制连接,气路组件22的核心部件是电磁阀4。电磁阀优选是两位三通,但不限于两位三通,例如两位两通、四通、五通、三位电磁阀等。电磁阀4控制第一气泵6,第一气泵6的作用是在两位三通电磁阀4的控制下给球囊阀19供气和排气。气路组件22还可以包括另一个两位三通电磁阀7,其属于备用电磁阀,起到双重安全保护的作用,即当两位三通电磁阀4发生故障时,球囊阀19内部的气体无法排出,呼吸机管路无法接通,无法给病人实施机械通气时,两位三通阀7将得电打开,将球囊阀19内的气体排出。The function of the pneumatic circuit assembly 22 is to complete the pneumatic communication and control connection of the coughing machine 1 with the coughing circuit 20, the core component of which is the solenoid valve 4. The solenoid valve is preferably a two-position three-way, but is not limited to a two-position three-way, such as a two-position two-way, four-way, five-way, three-position solenoid valve, and the like. The solenoid valve 4 controls the first air pump 6, which functions to supply and exhaust the balloon valve 19 under the control of the two-position three-way solenoid valve 4. The gas path assembly 22 may further include another two-position three-way solenoid valve 7, which belongs to the backup solenoid valve and functions as a double safety protection, that is, when the two-position three-way solenoid valve 4 fails, the inside of the balloon valve 19 When the gas cannot be discharged, the ventilator line cannot be connected, and the patient cannot be mechanically ventilated, the two-position three-way valve 7 will be electrically opened to discharge the gas in the balloon valve 19.
主管路组件15包含快门阀17、质量流量计14、压力传感器13(第五传感器)和风机16。优选地,由于负压风机16工作排气时会产生高分贝旋转噪声和 涡流噪声,主管路组件15还包括消声降噪系统18,用于有效降低噪声对环境的影响。风机16用于产生咳痰需要的负压。压力传感器13即时检测风机16的压力,并且传输到控制系统8。风机16例如可以采用离心式、轴流式风机,但不限于风机,包含一切可以产生负压的动力元件,例如真空泵、真空发生器等。质量流量计14检测咳痰时的抽吸流量并提供给控制系统8,以在检测到所述抽吸流量接近0时或根据需要由控制系统8关闭快门阀17以切断咳痰回路。质量流量计14也可以是差压式、热式、涡轮式、超声波等其他任何形式的质量流量计,优选是差压式质量流量计或热式质量流量计。快门阀17是常闭的,只有在咳痰机工作时才由控制系统8打开。同时,其具备快速启闭、实现气流扰动的功能,可以增强咳痰效果。The main line assembly 15 includes a shutter valve 17, a mass flow meter 14, a pressure sensor 13 (fifth sensor), and a blower 16. Preferably, high-decibel rotating noise is generated due to the operation of the negative-pressure fan 16 when exhausting The eddy current noise, main line component 15 also includes a noise reduction noise reduction system 18 for effectively reducing the environmental impact of noise. Fan 16 is used to generate the negative pressure required for coughing. The pressure sensor 13 immediately detects the pressure of the blower 16 and transmits it to the control system 8. The fan 16 can be, for example, a centrifugal or axial fan, but is not limited to a fan, and includes all power components that can generate a negative pressure, such as a vacuum pump, a vacuum generator, and the like. The mass flow meter 14 detects the suction flow at the time of coughing and provides it to the control system 8 to close the shutter valve 17 to close the cough circuit when the suction flow is detected to be close to zero or as needed by the control system 8. The mass flow meter 14 can also be any other type of mass flow meter, such as differential pressure, thermal, turbine, ultrasonic, etc., preferably a differential pressure mass flow meter or a thermal mass flow meter. The shutter valve 17 is normally closed and is only opened by the control system 8 when the coughing machine is in operation. At the same time, it has the function of quick opening and closing and realizing airflow disturbance, which can enhance the cough effect.
控制系统8由微机控制单元、人机界面(用来设置全自动咳痰系统的参数)、各种压力或压差传感器组成。控制系统8收集所述传感器采集的各种参数,并进行控制输出其他零部件(例如快门阀17、电磁阀4)、人机互动。The control system 8 is composed of a microcomputer control unit, a human machine interface (a parameter for setting a fully automatic cough system), various pressure or differential pressure sensors. The control system 8 collects various parameters collected by the sensor, and performs control to output other components (such as the shutter valve 17, the solenoid valve 4) and human-machine interaction.
控制系统8包括压力传感器11、压力传感器12,压力传感器11、12实时监测节流装置21两侧的压力和压差,即压力传感器11检测节流装置21的接口A处的压力,压力传感器12检测节流装置21的接口B处的压力,并将数据传输给微机控制单元。如前所述,也可以只用一个压差传感器12分别检测接口A和接口B处的压力。压力传感器11、12监测节流装置21的压力是为了判断病人处于吸气相还是呼气相,为是否开启咳痰机进行数据准备。The control system 8 includes a pressure sensor 11 and a pressure sensor 12. The pressure sensors 11, 12 monitor the pressure and differential pressure on both sides of the throttle device 21 in real time, that is, the pressure sensor 11 detects the pressure at the interface A of the throttle device 21, and the pressure sensor 12 The pressure at the interface B of the throttling device 21 is detected and the data is transmitted to the microcomputer control unit. As previously mentioned, it is also possible to detect the pressure at interface A and interface B, respectively, using only one differential pressure sensor 12. The pressure sensors 11, 12 monitor the pressure of the throttling device 21 in order to determine whether the patient is in the inspiratory phase or the expiratory phase, and prepare data for whether or not to open the coughing device.
优选地,控制系统8优选地还包括压力传感器9,压力传感器9实时检测球囊阀19的病人端口处(图1中的C处)的压力,并将数据传输给微机控制单元。Preferably, the control system 8 preferably further comprises a pressure sensor 9 which detects the pressure at the patient port of the balloon valve 19 (at C in Figure 1) in real time and transmits the data to the microcomputer control unit.
实际上,压力传感器9和压力传感器11检测的是球囊阀19两侧的压力,针对两侧的压力差,在正常呼吸阶段,如果球囊阀19的两侧压力值大于一阈值(例如5厘米水柱)则微机控制单元报警,这样做的目的是:如果电磁阀4失效,球囊阀19开启失灵不能放气,而且二重防护电磁阀7也不能使球囊阀放气时,会造成呼吸机管路被堵塞,不能给病人供气,则控制系统8报警,告知工作人员可以立即检查系统,从而给病人第三重保护。In fact, the pressure sensor 9 and the pressure sensor 11 detect the pressure on both sides of the balloon valve 19, and for the pressure difference on both sides, in the normal breathing phase, if the pressure values on both sides of the balloon valve 19 are greater than a threshold (for example, 5 Cm water column) The microcomputer control unit alarms, the purpose of this is: if the solenoid valve 4 fails, the balloon valve 19 fails to open, and the double protection solenoid valve 7 does not make the balloon valve deflate, which will cause If the ventilator line is blocked and the patient cannot be supplied with air, the control system 8 will alarm and inform the staff to immediately check the system to give the patient a third protection.
优选地,控制系统8优选地还包括压力传感器10(第四传感器),压力传感 器10用于检测第一气泵6出口处的压力的压力传感器10。压力传感器10可以设置在第一气泵6与电磁阀4之间,或者电磁阀4与球囊阀19之间。为了防止第一气泵6的出口压力过高,堵塞以致烧毁电机或吹破球囊阀19的球囊,其中第一个方案是增加一个储气罐,储气罐上有小孔,可以缓慢放气,从而避免气泵出口压力过高。更优选地,在第一气泵6出口处增设压力传感器10(第二压力传感器),根据第一气泵6的出口压力,利用PWM方式,自动调节第一气泵6的转速(即,气泵出口压力低时,增加气泵转速,出口压力高时,降低泵的转速或停止),从而使第一气泵6的输出口保持一个恒定的压力,保证气泵安全。同时减小了设备的体积,降低能耗,增加了系统的可靠性。Preferably, the control system 8 preferably further comprises a pressure sensor 10 (fourth sensor), pressure sensing The device 10 is used to detect the pressure sensor 10 at the outlet of the first air pump 6. The pressure sensor 10 may be disposed between the first air pump 6 and the solenoid valve 4, or between the solenoid valve 4 and the balloon valve 19. In order to prevent the outlet pressure of the first air pump 6 from being too high, the clogging may cause the motor to burn or blow the balloon of the balloon valve 19. The first solution is to add a gas storage tank, which has a small hole and can be slowly placed. Gas, so as to avoid excessive pressure at the outlet of the pump. More preferably, a pressure sensor 10 (second pressure sensor) is added at the outlet of the first air pump 6, and the rotational speed of the first air pump 6 is automatically adjusted according to the outlet pressure of the first air pump 6 by means of a PWM method (ie, the air pump outlet pressure is low) When the air pump speed is increased and the outlet pressure is high, the pump speed is reduced or stopped, so that the output of the first air pump 6 is maintained at a constant pressure to ensure the safety of the air pump. At the same time, the volume of the device is reduced, the energy consumption is reduced, and the reliability of the system is increased.
图3显示了气路组件22的一个示例的连接关系图。气路组件22包括还有10个接头:第一接头207、第二接头206、第三接头204、第四接头203、第五接头258、第六接头205,以及与性咳痰管路20连接的四个接头第七接头226、第八接头228、第九接头229,第十接头230。FIG. 3 shows a connection diagram of an example of the air passage assembly 22. The pneumatic circuit assembly 22 includes 10 joints: a first joint 207, a second joint 206, a third joint 204, a fourth joint 203, a fifth joint 258, a sixth joint 205, and a connection to the sexual coughing line 20. The four joints are a seventh joint 226, an eighth joint 228, a ninth joint 229, and a tenth joint 230.
具体地,第一接头207一端连接到第二气泵3,一端连接第七接头226,进而连接到咳痰管路20中的节流装置21的A口,第二气泵3输出的压缩空气将经过第一接头207和第七接头226输出节流装置21的A口,实现第二气泵3对A口的吹气。第二接头206与差压传感器12一个输入口连通,藉由此路,实现差压传感器12对节流装置21上A点的压力数据采集。第三接头204与差压传感器12的另一个输入口连通(或者与压力传感器11连通),第三接头204通过第九接头229连接到节流装置21的B口,通过此路,实现压差传感器12对节流装置21上B口的压力数据采集。同样地,第四接头203与第三气泵5连通,进而通过第九接头229与咳痰管路20中的节流装置21的B口连接,实现第三气泵5对B口的吹气。Specifically, the first joint 207 is connected to the second air pump 3 at one end and the seventh joint 226 at one end, and is connected to the A port of the throttling device 21 in the coughing line 20, and the compressed air output by the second air pump 3 passes. The first joint 207 and the seventh joint 226 are outputted to the A port of the throttle device 21, and the second air pump 3 is blown to the A port. The second joint 206 is in communication with an input port of the differential pressure sensor 12, and by this path, pressure data acquisition by the differential pressure sensor 12 at point A on the throttling device 21 is achieved. The third joint 204 is in communication with the other input port of the differential pressure sensor 12 (or is in communication with the pressure sensor 11), and the third joint 204 is connected to the B port of the throttle device 21 through the ninth joint 229, through which the pressure difference is achieved. The sensor 12 collects pressure data from port B on the throttling device 21. Similarly, the fourth joint 203 is in communication with the third air pump 5, and is further connected to the B port of the throttle device 21 in the coughing line 20 through the ninth joint 229, so that the third air pump 5 blows the B port.
第五接头258连接第一气泵6和电磁阀4的第一口(图3中的(1))。第八接头228连接电磁阀4的第二口(图3中的(2)),进而连接到球囊阀19。第六接头205连接电磁阀4的第三口(图3中的(3))和压力传感器9。第十接头230连接电磁阀4的(3)口和病人端口C。实质上接头205与第十接头230连通,可以使压力传感器9能够对主呼吸管路中靠近病人端的压力进行监测。检测此处 的压力是非常有用的,正如前面描述的可以用于判断主呼吸管路是否堵塞的依据。第一气泵6输出的压缩空气经过第五接头258,由电磁阀4的(1)口进入电磁阀4。The fifth joint 258 connects the first air pump 6 and the first port of the solenoid valve 4 ((1) in Fig. 3). The eighth joint 228 is connected to the second port of the solenoid valve 4 ((2) in Fig. 3), and is further connected to the balloon valve 19. The sixth joint 205 is connected to the third port ((3) in FIG. 3) of the solenoid valve 4 and the pressure sensor 9. The tenth joint 230 connects the port (3) of the solenoid valve 4 and the patient port C. In essence, the joint 205 is in communication with the tenth joint 230, which allows the pressure sensor 9 to monitor the pressure in the main breathing circuit adjacent to the patient end. Detect here The pressure is very useful, as described above, which can be used to determine if the main breathing circuit is blocked. The compressed air output from the first air pump 6 passes through the fifth joint 258, and enters the electromagnetic valve 4 from the (1) port of the electromagnetic valve 4.
当电磁阀4失电时,由图3可以看到,(1)口是关闭的,气路由此被切断。当电磁阀4得电后,(1)口和(2)口接通,气流由电磁阀4的(2)口出来,通过第八接头228与球囊阀19直接连通,因此通过电磁阀4的得电,可以实现第一气泵6对球囊阀19的充气,球囊阀因此关闭,实现对呼吸机管路的切断(见图2)。当需要球囊阀放气时,电磁阀4失电,电磁阀4的(2)口与(3)口接通,球囊阀气囊内的气体经过第八接头228、电磁阀4的(2)口、电磁阀4的(3)口排出,到达第十接头230处,第十接头230与一次性咳痰管路20中的靠近病人端的一个压力采集口连通,因此球囊阀排出的气体最终经过该口进入了主呼吸管路。球囊阀排出的气体不排入大气而排到主呼吸管路里的原因,前面已做阐述。When the solenoid valve 4 is de-energized, it can be seen from Fig. 3 that (1) the port is closed and the gas route is cut off. When the solenoid valve 4 is energized, the ports (1) and (2) are connected, the airflow is from the port (2) of the solenoid valve 4, and the eighth port 228 is directly connected to the balloon valve 19, so that the solenoid valve 4 is passed. The power of the first air pump 6 can inflate the balloon valve 19, and the balloon valve is thus closed to cut off the ventilator line (see Fig. 2). When the balloon valve is required to deflate, the solenoid valve 4 is de-energized, the (2) port of the solenoid valve 4 is connected to the port (3), and the gas in the balloon valve air bag passes through the eighth joint 228 and the solenoid valve 4 (2) The port (3) of the solenoid valve 4 is discharged to reach the tenth joint 230, and the tenth joint 230 communicates with a pressure collecting port of the disposable coughing line 20 near the patient end, so the gas discharged from the balloon valve Eventually through the mouth into the main breathing circuit. The reason why the gas discharged from the balloon valve is not discharged into the atmosphere and discharged into the main breathing circuit has been described above.
如前所述,电磁阀7的作用是当电磁阀4因某种原因切换失灵时,球囊阀19不能放气,导致呼吸机管路被非预期切断,电磁阀7能够及时把球囊中的气体放掉,保证患者安全,其工作过程是这样的:当电磁阀4失电后,主系统检测到球囊阀没有排气,于是电磁阀7得电,球囊阀中的气体将经过第八接头228进入电磁阀7的第一口(图3中的《1》),此时,电磁阀7由于得电,第一口和第二口(图3中的《2》)接通,气体从电磁阀7的第二口排出,经过第十接头230,由病人压力检测口进入到主呼吸管路,从而完成球囊阀的排气。As mentioned above, the function of the solenoid valve 7 is that when the solenoid valve 4 fails to switch for some reason, the balloon valve 19 cannot be deflated, causing the ventilator line to be unintentionally cut off, and the solenoid valve 7 can be placed in the balloon in time. The gas is released to ensure the safety of the patient. The working process is as follows: when the solenoid valve 4 is de-energized, the main system detects that the balloon valve is not exhausted, so the solenoid valve 7 is energized, and the gas in the balloon valve passes. The eighth joint 228 enters the first port of the solenoid valve 7 ("1" in Fig. 3). At this time, since the solenoid valve 7 is energized, the first port and the second port ("2" in Fig. 3) are turned on. The gas is discharged from the second port of the solenoid valve 7, passes through the tenth joint 230, and enters the main breathing circuit from the patient pressure detecting port, thereby completing the exhaust of the balloon valve.
就如前面描述的,本发明的咳痰系统可以工作在自动模式,即由操作者(一般是医护人员)设定一个间隔时间,一旦到时间,全自动咳痰机就进入待命状态,系统开始检测病人是否符合咳痰条件,一旦符合,咳痰即开始。另一种工作方式是手动模式,操作者通常是有一定活动能力的病人,当病人按下手动咳痰按钮后,不是立即咳痰,同样也是全自动咳痰机进入待命状态,直到病人吸气结束,病人呼吸开始前,满足咳痰条件时,咳痰机才启动咳痰。咳痰并不是无条件的,如果不满足一定的条件,强行咳痰不但达不到预期的效果,还可能对病人造成伤害。As described above, the cough system of the present invention can operate in an automatic mode, that is, an interval is set by an operator (generally a medical professional), and once the time is up, the automatic coughing machine enters a standby state, and the system starts. Test whether the patient meets the cough condition, and once met, the cough begins. Another way of working is manual mode. The operator is usually a patient with certain mobility. When the patient presses the manual cough button, it does not cough immediately. The automatic coughing machine also enters the standby state until the patient inhales. At the end, the coughing machine starts coughing when the patient's breathing begins and the coughing condition is met. Cough is not unconditional. If you do not meet certain conditions, forcing a cough will not only achieve the desired effect, but may also cause harm to the patient.
参看图1,不进行咳痰时,控制系统8监测传感器11、12采集的节流装置21的压力,监测吸气流量。此时,球囊阀19没有充气,是常通的,快门阀17 是常闭的。呼吸机按设定的呼吸频率给病人持续进行机械通气。启动咳痰可以是病人手动触发或者根据咳痰机操作者设定的时间间隔(例如5分钟)触发。咳痰过程如下:Referring to Figure 1, when coughing is not performed, the control system 8 monitors the pressure of the throttling device 21 collected by the sensors 11, 12 to monitor the inspiratory flow. At this time, the balloon valve 19 is not inflated and is normally open, and the shutter valve 17 It is normally closed. The ventilator continuously mechanically ventilates the patient at a set respiratory rate. Initiating a cough can be triggered manually by the patient or according to a time interval (eg, 5 minutes) set by the coughing machine operator. The coughing process is as follows:
1、咳痰启动后,控制系统8开启咳痰机1内部的风机16,在风机16和快门阀17之间的管路将产生预期的负压,负压可以是在-10cmH2O至-200cmH2O之间,优选的是-50cmH2O至-150cmH2O之间,更优选的是在-60cmH2O至-120mH2O之间,此时,由于快门阀17是关闭的,不会对病人的机械通气造成任何影响。压力传感器13即时检测风机压力,并且传输到控制系统8,从而控制系统8可以调节风机16的压力。1. After the cough is activated, the control system 8 turns on the fan 16 inside the coughing machine 1, and the pipeline between the fan 16 and the shutter valve 17 will produce the expected negative pressure, and the negative pressure may be between -10 cmH2O and -200 cmH2O. Preferably, it is between -50 cmH2O and -150 cmH2O, more preferably between -60 cmH2O and -120 mH2O. At this time, since the shutter valve 17 is closed, it does not have any influence on the mechanical ventilation of the patient. The pressure sensor 13 immediately detects the fan pressure and transmits it to the control system 8, so that the control system 8 can adjust the pressure of the fan 16.
2、控制系统8内部的压力传感器11此时实时监测节流装置21的接口A处的压力,差压传感器12实时监测节流装置21的接口B处的压力,并将数据传输给微机控制单元,微机控制单元计算出的咳痰管路20中即时的流量和压力,分析、判断病人所处的为吸气阶段或者呼气阶段,捕捉到吸气结束,呼气即将开始的转换时间点,当病人处在这一个转换时间点时,控制系统8开启第一气泵6,两位三通电磁阀4得电,接通第一气泵6与球囊阀19的气路,球囊阀19被充气,导致球囊阀19关闭,切断了呼吸机给病人的通气路线,几乎在同时,常闭的快门阀17由控制系统8迅速打开,风机16的负压管路同病人的气道连通,这将导致一个快速、突然的呼气气流,从病人的肺内喷出,相关实践及理论研究证明,当流量大于170L/Min时,将能有效咳痰,这个流量约等同于一个普通人正常的咳嗽。此时,由于球囊阀19被关闭,呼吸机不会暴露在风机的负压下,但是对于某些有检测病人呼气流量功能的呼吸机,可能会导致其报警,因此,在球囊阀19被关闭的那一瞬间,气泵组件2中的第二气泵3、5同时也开始运行,产生的气体分别经过节流装置21的接口A和接口B进入呼吸管路,流向呼吸机的呼气回路,从而能够顶替病人呼气气流,避免呼吸机报警。2. The pressure sensor 11 inside the control system 8 monitors the pressure at the interface A of the throttle device 21 in real time, and the differential pressure sensor 12 monitors the pressure at the interface B of the throttle device 21 in real time and transmits the data to the microcomputer control unit. The instantaneous flow rate and pressure in the coughing tube 20 calculated by the microcomputer control unit analyzes and judges whether the patient is in the inhalation phase or the expiratory phase, and captures the transition time point at which the inhalation is over and the exhalation is about to start. When the patient is at this switching time point, the control system 8 turns on the first air pump 6, the two-position three-way solenoid valve 4 is energized, and the air path of the first air pump 6 and the balloon valve 19 is turned on, and the balloon valve 19 is turned on. Inflation causes the balloon valve 19 to close, cutting off the ventilation path of the ventilator to the patient. At about the same time, the normally closed shutter valve 17 is quickly opened by the control system 8, and the negative pressure line of the fan 16 is in communication with the patient's airway. This will result in a rapid, sudden expiratory flow that is ejected from the patient's lungs. Relevant practical and theoretical studies have shown that when the flow rate is greater than 170L/Min, it will be effective for coughing. This flow is equivalent to an ordinary person. Cough . At this time, since the balloon valve 19 is closed, the ventilator will not be exposed to the negative pressure of the fan, but for some ventilators that have the function of detecting the patient's expiratory flow, it may cause an alarm, therefore, in the balloon valve. At the moment when 19 is closed, the second air pumps 3, 5 in the air pump assembly 2 also start to operate at the same time, and the generated gas enters the breathing circuit through the interface A and the interface B of the throttling device 21, respectively, and the exhalation to the ventilator The circuit is able to replace the patient's expiratory flow and avoid ventilator alarms.
3、当从病人肺内流出的气体经过快门阀17、流量传感器14、风机16、消声系统18排放到大气中。流量传感器14检测病人的呼气流量并将数据传输至微机控制单元,当检测到病人的呼气流量接近于零的时候,微机控制单元关闭快门阀17,同时,两位三通电磁阀4失电,球囊阀19开始放气,其内部的气体经过三通电磁阀流入病人主呼吸管路,球囊阀19因此打开,呼吸机与病人接通,此 时,病人开始吸气,呼吸机被触发,病人和没有咳痰之前一样,继续进行正常的机械通气,此时标志着一次咳痰已经完成。3. When the gas flowing out of the patient's lungs is discharged to the atmosphere through the shutter valve 17, the flow sensor 14, the blower 16, and the muffler system 18. The flow sensor 14 detects the patient's expiratory flow and transmits the data to the microcomputer control unit. When detecting that the patient's expiratory flow is close to zero, the microcomputer control unit closes the shutter valve 17, and at the same time, the two-position three-way solenoid valve 4 is lost. Electric, the balloon valve 19 begins to deflate, and the internal gas flows into the patient's main breathing circuit through the three-way solenoid valve, and the balloon valve 19 is thus opened, and the ventilator is connected to the patient. At the time, the patient begins to inhale, the ventilator is triggered, and the patient continues normal mechanical ventilation as before the cough, indicating that a cough has been completed.
还要说明的是:理论上是病人的呼气流量接近于零时,咳痰停止,但是,由于快门阀、球囊阀等部件需要响应时间,如果呼气流量接近于零时再发出指令,可能会产生过抽,危及病人生命,因此,实际运行过程中,应该提前关闭快门阀和球囊阀,当流量传感器14检测到通过快门阀17的气体流量低于一阈值时,微机控制单元关闭快门阀17,该阈值理想的值可以根据咳痰管路的硬件设备以及病人的生理特征进行调整,例如一般可以设为17L/Min或以上。It should also be noted that: theoretically, when the patient's expiratory flow is close to zero, the cough stops. However, since the shutter valve, the balloon valve and the like require response time, if the expiratory flow is close to zero, the command is issued. Excessive pumping may occur, endangering the patient's life. Therefore, during actual operation, the shutter valve and the balloon valve should be closed in advance. When the flow sensor 14 detects that the gas flow rate through the shutter valve 17 is below a threshold, the microcomputer control unit is turned off. The shutter valve 17, the ideal value of the threshold can be adjusted according to the hardware device of the coughing line and the physiological characteristics of the patient, for example, generally can be set to 17L/Min or more.
同时,对于呼吸窘迫综合征等需要进行高PEEP(呼气末正压)值通气治疗的病人,可以更提前地关闭快门阀,因此,提前关闭的流量值会大于17L/MIN,以使病人肺内压力在咳痰结束后仍保持高于大气压,以防止肺泡萎缩塌陷。这也是本咳痰系统相比于背景技术中所述的飞利浦coughassist,能够更广泛地应用于各种病情病人的重要原因。At the same time, for patients with respiratory distress syndrome and other patients requiring high PEEP (expiratory positive end expiratory pressure) ventilation, the shutter valve can be closed earlier, so the flow rate of early closure will be greater than 17L/MIN, so that the patient's lungs The internal pressure remains above atmospheric pressure after the end of the cough to prevent collapse of the alveolar atrophy. This is also an important reason why the cough system can be more widely used in various medical conditions than the Philips coughassist described in the background art.
通过对上述过程的不断重复,可以有效地把病人的气道分泌物从肺部深层逐步排出到体外,然后再通过有负压吸引功能的痰液收集装置,把痰液汇聚起来,由医护人员定期倒掉或清除。Through repeated repetition of the above process, the patient's airway secretions can be effectively discharged from the deep part of the lungs to the outside of the body, and then the sputum collection device is collected by the sputum collecting device with negative pressure suction function, and the medical staff is gathered by the medical staff. Drop or clear regularly.
如前面描述的,该系统可以工作在自动模式,即由操作者,一般是医护人员,设定一个间隔时间,一旦到时间,全自动咳痰机就进入待命状态,风机启动,系统开始检测病人是否符合咳痰条件,一旦符合,咳痰即开始。另一种工作方式是手动模式,操作者通常是有一定活动能力的病人,当病人按下手动咳痰按钮后,不是立即咳痰,同样也是全自动咳痰机进入待命状态,风机启动,直到病人吸气结束,病人呼吸开始前,满足咳痰条件时,咳痰机才启动咳痰。As described above, the system can work in an automatic mode, that is, an operator, usually a medical staff, sets an interval time. Once the time is up, the automatic coughing machine enters a standby state, the fan starts, and the system starts to detect the patient. Whether it meets the cough condition, once it meets, the cough begins. Another way of working is manual mode. The operator is usually a patient with certain mobility. When the patient presses the manual cough button, it does not cough immediately. Also, the automatic coughing machine enters the standby state, and the fan starts until the fan starts. The coughing machine starts coughing when the patient inhales and the coughing condition is met before the patient begins to breathe.
以上所述的实施例,只是本发明较优选的具体实施方式,本领域的技术人员在本发明技术方案范围内进行的通常变化和替换都应包含在本发明的保护范围内。 The embodiments described above are only preferred embodiments of the present invention, and the usual changes and substitutions made by those skilled in the art within the scope of the present invention are included in the scope of the present invention.

Claims (10)

  1. 一种咳痰系统,其特征在于,包括:咳痰机(1)和咳痰管路(20),A coughing system, comprising: a coughing machine (1) and a coughing line (20),
    咳痰管路(20)包括节流装置(21)和球囊阀(19),其中球囊阀(19)为一两通阀,其一个端口为呼吸机端口,通过节流装置(21)连接到呼吸机,另一端口分成两支,一支为咳痰机端口,连接咳痰机(1),另一支为病人端口,连接病人;The coughing line (20) includes a throttling device (21) and a balloon valve (19), wherein the balloon valve (19) is a two-way valve, one port of which is a ventilator port, and a throttling device (21) Connected to the ventilator, the other port is divided into two, one is the coughing machine port, connected to the coughing machine (1), the other is the patient port, connected to the patient;
    咳痰机(1)包括主管路组件(15)、气泵组件(2)和控制系统(8),主管路组件(15)包括产生负压的风机(16)以及在咳痰时开启的快门阀(17);气泵组件(2)包括向球囊阀(19)供气的第一气泵(6)和向节流装置(21)供气的第二气泵(3);控制系统(8)用于控制主管路组件(15)和气泵组件(2),控制系统(8)包括用于测量节流装置(21)处的气压的第一传感器(12),以及微机控制单元;The coughing machine (1) comprises a main line assembly (15), a gas pump assembly (2) and a control system (8), the main line assembly (15) comprising a fan (16) for generating a negative pressure and a shutter valve that opens when coughing (17); the air pump assembly (2) includes a first air pump (6) for supplying air to the balloon valve (19) and a second air pump (3) for supplying air to the throttle device (21); for the control system (8) For controlling the main line assembly (15) and the air pump assembly (2), the control system (8) includes a first sensor (12) for measuring the air pressure at the throttling device (21), and a microcomputer control unit;
    其中,微机控制单元基于第一传感器(12)检测的气压差判断病人处于呼吸阶段或者吸气阶段,当病人处于吸气阶段向呼气阶段转换时,微机控制单元控制第一气泵(6)向球囊阀(19)的球囊供气以断开呼吸机端口至病人端口的气路,控制系统(8)打开风机(16)和快门阀(17)以辅助病人咳痰,同时微机控制单元控制第二气泵(3)向节流装置(21)供气,在咳痰期间,呼吸机不停止工作。Wherein, the microcomputer control unit determines that the patient is in the breathing phase or the inhalation phase based on the air pressure difference detected by the first sensor (12), and when the patient is in the inhalation phase to the exhalation phase, the microcomputer control unit controls the first air pump (6) to The balloon of the balloon valve (19) supplies air to disconnect the ventilator port to the patient port, and the control system (8) opens the fan (16) and the shutter valve (17) to assist the patient in coughing, while the microcomputer control unit The second air pump (3) is controlled to supply air to the throttling device (21), and the ventilator does not stop working during coughing.
  2. 根据权利要求1所述的咳痰系统,其特征在于,节流装置(21)沿呼吸机送气气流方向上设置接口A和接口B,气泵组件(2)还包括第三气泵(5),控制系统(8)还包括第二传感器(11),The coughing system according to claim 1, characterized in that the throttling device (21) is provided with an interface A and an interface B in the direction of the ventilating airflow of the ventilator, and the air pump assembly (2) further comprises a third air pump (5) for controlling The system (8) also includes a second sensor (11),
    而且,第一传感器(12)用于检测节流装置(21)接口A和B处的压差,第二传感器(11)用于检测节流装置(21)接口B处的气压,Moreover, the first sensor (12) is used to detect the pressure difference at the interfaces A and B of the throttle device (21), and the second sensor (11) is used to detect the air pressure at the interface B of the throttle device (21).
    第二气泵(3)向节流装置(21)接口A供气,第三气泵(5)向节流装置(21)接口B供气。The second air pump (3) supplies air to the interface A of the throttling device (21), and the third air pump (5) supplies air to the interface B of the throttling device (21).
  3. 根据权利要求2所述的咳痰系统,其特征在于,还包括气路组件(22),气路组件(22)包括受微机控制单元控制的电磁阀(4),电磁阀(4)连接在第一气泵(6)和球囊阀(19)之间,电磁阀(4)控制球囊阀(19)的进气和排气。 The coughing system according to claim 2, further comprising a pneumatic circuit assembly (22), the pneumatic circuit assembly (22) comprising a solenoid valve (4) controlled by the microcomputer control unit, the solenoid valve (4) being connected Between the first air pump (6) and the balloon valve (19), the solenoid valve (4) controls the intake and exhaust of the balloon valve (19).
  4. 根据权利要求2所述的咳痰系统,其特征在于,控制系统(8)还包括:检测球囊阀(19)的病人端口处的压力的第三传感器(9),当微机控制单元计算第二传感器(11)与第三传感器(9)检测的压力之间的压力差大于一阈值时,微机控制单元报警。The coughing system according to claim 2, characterized in that the control system (8) further comprises: a third sensor (9) for detecting the pressure at the patient port of the balloon valve (19), when the microcomputer control unit calculates When the pressure difference between the pressures detected by the second sensor (11) and the third sensor (9) is greater than a threshold, the microcomputer control unit alarms.
  5. 根据权利要求1所述的咳痰系统,其特征在于,主管路组件(15)还包括流量计(14),流量计(14)用于检测通过快门阀(17)的气体流量,当低于一阈值时,微机控制单元确定咳痰结束,关闭快门阀(17),该阈值大于0。The coughing system of claim 1 wherein the main line assembly (15) further comprises a flow meter (14) for detecting gas flow through the shutter valve (17) when below At a threshold, the microcomputer control unit determines that the cough is over and closes the shutter valve (17), the threshold being greater than zero.
  6. 根据权利要求5所述的咳痰系统,其特征在于,主管路组件(15)还包括用于检测风机(16)的压力的第五压力传感器(13),微机控制单元根据第五压力传感器(13)检测的压力来调节风机(16)的转速。The coughing system according to claim 5, characterized in that the main line assembly (15) further comprises a fifth pressure sensor (13) for detecting the pressure of the fan (16), the microcomputer control unit being according to the fifth pressure sensor ( 13) The detected pressure is used to adjust the speed of the fan (16).
  7. 根据权利要求3所述的咳痰系统,其特征在于,气路组件(22)还包括:第一接头(207)、第二接头(206)、第三接头(204)、第四接头(203)、第五接头(258)、第六接头(205),第七接头(226)、第八接头(228)、第九接头(229)和第十接头(230),其中The coughing system according to claim 3, wherein the pneumatic circuit assembly (22) further comprises: a first joint (207), a second joint (206), a third joint (204), and a fourth joint (203). a fifth joint (258), a sixth joint (205), a seventh joint (226), an eighth joint (228), a ninth joint (229), and a tenth joint (230), wherein
    第一接头(207)一端连接到第二气泵(3),另一端通过第七接头(226)连接到节流装置(21)的接口A,The first joint (207) is connected at one end to the second air pump (3), and the other end is connected to the interface A of the throttle device (21) through the seventh joint (226).
    第二接头(206)连接到第一传感器(12),a second connector (206) is coupled to the first sensor (12),
    第三接头(204)连接到第二传感器(11),a third connector (204) is coupled to the second sensor (11),
    第四接头(203)一端连接到第三气泵(5),另一端通过第九接头(229)连接到节流装置(21)的接口B,The fourth joint (203) is connected at one end to the third air pump (5), and the other end is connected to the interface B of the throttle device (21) through the ninth joint (229).
    第五接头(258)一端连接到第一气泵(6),另一端连接电磁阀(4)的第一口,The fifth joint (258) is connected at one end to the first air pump (6), and at the other end to the first port of the solenoid valve (4),
    第六接头(205)连接到电磁阀(4)的第三口且连接第三传感器(9),a sixth joint (205) is connected to the third port of the solenoid valve (4) and connected to the third sensor (9),
    第八接头(228)一端连接到球囊阀(19)的球囊,另一端连接电磁阀(4)的第二口,第十接头(230)连接到电磁阀(4)的第三口且连接第三传感器(9),The eighth joint (228) has one end connected to the balloon of the balloon valve (19), the other end connected to the second port of the solenoid valve (4), and the tenth joint (230) is connected to the third port of the solenoid valve (4) and Connecting the third sensor (9),
  8. 根据权利要求7所述的咳痰系统,其特征在于,气路组件(22)还包括备用电磁阀(7),电磁阀(7)的第一口连接到第八接头(228),电磁阀(7)的第二口连接到第十接头(230),电磁阀(7)得电后,电磁阀(7)的第一口和第二口接通,球囊阀(19)的球囊中的气体经由第八接头(228)和第十接头(230) 排出。The coughing system according to claim 7, wherein the pneumatic circuit assembly (22) further comprises a backup solenoid valve (7), the first port of the solenoid valve (7) being connected to the eighth connector (228), the solenoid valve The second port of (7) is connected to the tenth joint (230). After the solenoid valve (7) is energized, the first port and the second port of the solenoid valve (7) are connected, and the balloon of the balloon valve (19) is opened. The gas in the middle via the eighth joint (228) and the tenth joint (230) discharge.
  9. 根据权利要求8所述的咳痰系统,其特征在于,第六接头(205)连接到呼吸机的呼吸管路,球囊阀(19)的球囊中的气体排出到呼吸机的呼吸管路中。The coughing system according to claim 8, wherein the sixth joint (205) is connected to the breathing circuit of the ventilator, and the gas in the balloon of the balloon valve (19) is discharged to the breathing circuit of the ventilator in.
  10. 根据权利要求4所述的咳痰系统,其特征在于,控制系统(8)还包括用于检测第一气泵(6)出口处的气压的第四传感器(10),第四传感器(10)设置在第一气泵(6)出口处,微机控制单元根据第四传感器(10)检测的压力,利用PWM方式调节第一气泵(6)的转速,以使得第一气泵(6)输出恒定的压力。 Cough system according to claim 4, characterized in that the control system (8) further comprises a fourth sensor (10) for detecting the air pressure at the outlet of the first air pump (6), the fourth sensor (10) setting At the outlet of the first air pump (6), the microcomputer control unit adjusts the rotational speed of the first air pump (6) by means of PWM according to the pressure detected by the fourth sensor (10) so that the first air pump (6) outputs a constant pressure.
PCT/CN2016/100104 2015-10-12 2016-09-26 Expectoration system WO2017063498A1 (en)

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