CN113769214A - Control system of breathing machine - Google Patents

Control system of breathing machine Download PDF

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Publication number
CN113769214A
CN113769214A CN202110968102.2A CN202110968102A CN113769214A CN 113769214 A CN113769214 A CN 113769214A CN 202110968102 A CN202110968102 A CN 202110968102A CN 113769214 A CN113769214 A CN 113769214A
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CN
China
Prior art keywords
valve
air
gas
pressure
regulating valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110968102.2A
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Chinese (zh)
Inventor
王勇
余晓丹
姚鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Huirui Biomedical Electronics Co ltd
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Henan Huirui Biomedical Electronics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Henan Huirui Biomedical Electronics Co ltd filed Critical Henan Huirui Biomedical Electronics Co ltd
Priority to CN202110968102.2A priority Critical patent/CN113769214A/en
Publication of CN113769214A publication Critical patent/CN113769214A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/202—Controlled valves electrically actuated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter

Abstract

The invention discloses a control system of a respirator, which comprises a gas control assembly and a microprocessor; the gas control assembly sequentially comprises a gas source filter, a gas source pressure sensor, a pressure reducing valve, a two-position three-way electromagnetic valve, a gas suction flow speed regulating valve, an air-oxygen mixer, an oxygen concentration regulating valve, an air suction filter, a pressure release valve, a flow sensor, a breather valve and an air passage pressure sensor along the gas suction direction. The control system of the breathing machine has the advantages of high integration of the gas circuit and the control design, accurate and flexible fluid control, and remarkably reduced volume of the breathing machine, so that the gas output of the breathing machine is more stable and reliable.

Description

Control system of breathing machine
Technical Field
The invention relates to the technical field of medical instruments, in particular to a control system of a breathing machine.
Background
Ventilators have been commonly used for respiratory failure due to various causes, anesthesia and breathing management during major surgery, respiratory support therapy, and rescue resuscitation as an effective means for manually replacing the function of spontaneous ventilation. The existing breathing machine is high in operation difficulty, large in size, capable of occupying larger space, inconvenient to place and inconvenient to carry in the process of first aid and transportation. The control system of the conventional breathing machine is complex, low in integration degree, low in stability and low in reliability.
Disclosure of Invention
In view of this, the present invention provides a control system of a ventilator, which has high integration of gas circuit and control design, high safety, precise and flexible fluid control, and significantly reduces the volume of the ventilator, so that the gas output of the ventilator is more stable and reliable.
In order to achieve the purpose, the invention adopts the following technical scheme: a ventilator control system includes a gas control assembly and a microprocessor; the gas control assembly sequentially comprises a gas source filter, a gas source pressure sensor, a pressure reducing valve, a two-position three-way electromagnetic valve, a gas suction flow speed regulating valve, an air-oxygen mixer, an oxygen concentration regulating valve, an air suction filter, a pressure release valve, a flow sensor, a breather valve and an air passage pressure sensor along the gas suction direction;
the air source filter, the air source pressure sensor, the pressure reducing valve, the two-position three-way electromagnetic valve, the air suction flow rate regulating valve, the air-oxygen mixer, the oxygen concentration regulating valve and the air suction filter are arranged in the host;
the driving gas output by the gas source enters the pressure reducing valve through the gas source filter, the gas source pressure sensor is arranged on a branch between the pressure reducing valve and the gas source filter, and the gas source pressure sensor monitors the gas source pressure in real time; the output port of the pressure reducing valve is connected in series with the two-position three-way electromagnetic valve, and the output port of the two-position three-way electromagnetic valve is connected with the air suction flow speed regulating valve.
Furthermore, a pressure release valve, an emergency air suction inlet and a flow sensor are arranged between the air outlet of the main machine and the breather valve, and an airway pressure sensor is arranged at the patient end of the breather valve.
Further, the oxygen concentration regulating valve includes a first regulating valve and a second regulating valve; the air-oxygen mixer is connected with the second regulating valve in parallel, and the air-oxygen mixer is externally connected with the first regulating valve and the air suction filter.
Further, the flow sensor monitors the inhalation tidal volume in real time and provides inhalation tidal volume data to the microprocessor; the airway pressure sensor provides data of trigger pressure, airway peak pressure, and interval time of spontaneous breathing to the microprocessor.
The invention has the beneficial effects that:
the gas circuit and the control design of the control system of the respirator are highly integrated, the safety is high, the fluid control is accurate and flexible, the volume of the respirator is obviously reduced, and the gas output of the respirator is more stable and reliable. The respirator control system of the invention provides required monitoring data for digital modular management, each sensor is implemented, the microprocessor can rapidly and accurately process a large amount of data, and guarantees the safety, reliability and stability of the respirator.
Drawings
FIG. 1 is a general schematic diagram of a ventilator control system according to the present invention;
FIG. 2 is a schematic view of a portion of a ventilator control system according to the present invention.
Reference numerals: the air source control system comprises an air source 1, an air source filter 2, an air source pressure sensor 3, a pressure reducing valve 4, a two-position three-way electromagnetic valve 5, an air suction flow rate adjusting valve 6, an air-oxygen mixer 7, an oxygen concentration adjusting valve 8, an air suction filter 9, a pressure releasing valve 10, an emergency air suction inlet 11, a flow sensor 12, a breather valve 13, an air flue pressure sensor 14, a first adjusting valve 81 and a second adjusting valve 82.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
A ventilator control system includes a gas control assembly and a microprocessor. The gas control assembly sequentially comprises a gas source filter 2, a gas source pressure sensor 3, a pressure reducing valve 4, a two-position three-way electromagnetic valve 5, a gas suction flow speed regulating valve 6, an air-oxygen mixer 7, an oxygen concentration regulating valve 8, an air suction filter 9, a pressure release valve 10, a flow sensor 12, a breathing valve 13 and an airway pressure sensor 14 along the gas suction direction.
The air source filter 2, the air source pressure sensor 3, the pressure reducing valve 4, the two-position three-way electromagnetic valve 5, the air suction flow speed regulating valve 6, the air-oxygen mixer 7, the oxygen concentration regulating valve 8 and the air suction filter 9 are arranged in the host machine.
The driving gas output by the gas source 1 enters the pressure reducing valve 4 through the gas source filter 2, the gas source pressure sensor 3 is arranged on a branch between the pressure reducing valve 4 and the gas source filter 2, and the gas source pressure sensor 3 monitors the gas source pressure in real time. The output pressure of the pressure reducing valve 4 is limited to 0.28MPa, and when the pressure of the air source is lower than 0.28MPa, an alarm of low pressure of the air source is sent out.
The output port of the pressure reducing valve 4 is connected with a two-position three-way electromagnetic valve 5 in series, and the output port of the two-position three-way electromagnetic valve 5 is connected with an air suction flow speed regulating valve 6 to control the flow of oxygen. The oxygen after flow regulation enters an air-oxygen mixer 7, and an oxygen concentration regulating valve 8 regulates the oxygen flow and the air intake, so that the oxygen concentration is adjustable.
Example 2
The present embodiment is different from embodiment 1 in that: a pressure release valve 10, an emergency air suction inlet 11 and a flow sensor 12 are arranged between the air outlet of the main machine and a breather valve 13, an airway pressure sensor 14 is arranged at the patient end of the breather valve 13, and when the airway pressure is more than 60cmH2O, the pressure relief valve 10 opens to release gas. When the patient can breathe spontaneously and the ventilation is stopped due to equipment failure or the middle section of the air source, the emergency air suction inlet 11 is opened to enable the patient to breathe spontaneously and suck ambient air.
Example 3
The present embodiment is different from embodiment 1 in that: the oxygen concentration adjusting valve 8 includes a first adjusting valve 81 and a second adjusting valve 82. The air-oxygen mixer 7 is connected in parallel to the second regulating valve 82, and the air-oxygen mixer 7 is externally connected to the first regulating valve 81 and the air intake filter 9. The first adjusting valve 81 adjusts the air intake amount, the second adjusting valve 82 adjusts the oxygen flow rate, and the first adjusting valve 81 and the second adjusting valve 82 make the oxygen concentration adjustment more accurate.
Example 4
The present embodiment is different from embodiment 1 in that: the flow sensor 12 monitors the inhalation tidal volume in real time and provides inhalation tidal volume data to the microprocessor; airway pressure sensor 14 provides data to the microprocessor for trigger pressure, airway peak pressure, and interval of spontaneous breathing.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (4)

1. A ventilator control system characterized by: comprises a gas control component and a microprocessor; the gas control assembly sequentially comprises a gas source filter, a gas source pressure sensor, a pressure reducing valve, a two-position three-way electromagnetic valve, a gas suction flow speed regulating valve, an air-oxygen mixer, an oxygen concentration regulating valve, an air suction filter, a pressure release valve, a flow sensor, a breather valve and an air passage pressure sensor along the gas suction direction;
the air source filter, the air source pressure sensor, the pressure reducing valve, the two-position three-way electromagnetic valve, the air suction flow rate regulating valve, the air-oxygen mixer, the oxygen concentration regulating valve and the air suction filter are arranged in the host;
the driving gas output by the gas source enters the pressure reducing valve through the gas source filter, the gas source pressure sensor is arranged on a branch between the pressure reducing valve and the gas source filter, and the gas source pressure sensor monitors the gas source pressure in real time; the output port of the pressure reducing valve is connected in series with the two-position three-way electromagnetic valve, and the output port of the two-position three-way electromagnetic valve is connected with the air suction flow speed regulating valve.
2. The ventilator control system of claim 1, wherein: a pressure release valve, an emergency air suction inlet and a flow sensor are arranged between the air outlet of the main machine and the breather valve, and an airway pressure sensor is arranged at the patient end of the breather valve.
3. A ventilator control system according to claim 1 or 2, wherein: the oxygen concentration regulating valve comprises a first regulating valve and a second regulating valve; the air-oxygen mixer is connected with the second regulating valve in parallel, and the air-oxygen mixer is externally connected with the first regulating valve and the air suction filter.
4. A ventilator control system according to claim 1 or 2, wherein: the flow sensor monitors the inhalation tidal volume in real time and provides inhalation tidal volume data to the microprocessor; the airway pressure sensor provides data of trigger pressure, airway peak pressure, and interval time of spontaneous breathing to the microprocessor.
CN202110968102.2A 2021-08-23 2021-08-23 Control system of breathing machine Pending CN113769214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110968102.2A CN113769214A (en) 2021-08-23 2021-08-23 Control system of breathing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110968102.2A CN113769214A (en) 2021-08-23 2021-08-23 Control system of breathing machine

Publications (1)

Publication Number Publication Date
CN113769214A true CN113769214A (en) 2021-12-10

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CN202110968102.2A Pending CN113769214A (en) 2021-08-23 2021-08-23 Control system of breathing machine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114917438A (en) * 2022-05-17 2022-08-19 山东大学 Breathing machine working method based on flow rate control and breathing machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004030747A1 (en) * 2004-06-25 2006-01-19 Weinmann Geräte für Medizin GmbH + Co. KG Air-oxygen breathing mixtures, for emergency respirators, are produced using supply of pressurized oxygen to suck atmospheric air through venturi nozzle eductor
US20070193579A1 (en) * 2006-02-21 2007-08-23 Viasys Manufacturing, Inc. Hardware configuration for pressure driver
CN102500021A (en) * 2011-09-28 2012-06-20 于邦仲 Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine
CN102500020A (en) * 2011-09-28 2012-06-20 于邦仲 Pilot-operated type control air channel system of breathing machine
CN203710499U (en) * 2014-01-26 2014-07-16 郜向阳 Pneumatic respirator special for infants
CN105963837A (en) * 2016-06-08 2016-09-28 湖南明康中锦医疗科技发展有限公司 Air-oxygen mixed control breathing machine and control method
CN111888599A (en) * 2018-12-10 2020-11-06 深圳市科曼医疗设备有限公司 Pressure maintaining device of breathing machine
CN113577477A (en) * 2021-07-29 2021-11-02 深圳市安保科技有限公司 Gas circuit system and breathing machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004030747A1 (en) * 2004-06-25 2006-01-19 Weinmann Geräte für Medizin GmbH + Co. KG Air-oxygen breathing mixtures, for emergency respirators, are produced using supply of pressurized oxygen to suck atmospheric air through venturi nozzle eductor
US20070193579A1 (en) * 2006-02-21 2007-08-23 Viasys Manufacturing, Inc. Hardware configuration for pressure driver
CN102500021A (en) * 2011-09-28 2012-06-20 于邦仲 Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine
CN102500020A (en) * 2011-09-28 2012-06-20 于邦仲 Pilot-operated type control air channel system of breathing machine
CN203710499U (en) * 2014-01-26 2014-07-16 郜向阳 Pneumatic respirator special for infants
CN105963837A (en) * 2016-06-08 2016-09-28 湖南明康中锦医疗科技发展有限公司 Air-oxygen mixed control breathing machine and control method
CN111888599A (en) * 2018-12-10 2020-11-06 深圳市科曼医疗设备有限公司 Pressure maintaining device of breathing machine
CN113577477A (en) * 2021-07-29 2021-11-02 深圳市安保科技有限公司 Gas circuit system and breathing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114917438A (en) * 2022-05-17 2022-08-19 山东大学 Breathing machine working method based on flow rate control and breathing machine

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