A breathing workstation and oxygen supply method thereof

Abstract

The present invention provides a breathing workstation and an oxygen supply method thereof, which have a normal frequency jet mode and a normal frequency / ECG-triggered composite jet mode, receive human electrocardiogram raw data through a monitoring system, analyze the electrocardiogram raw data, extract cardiac cycle and single / dual frequency jet mode conversion point data and send them to a dual-channel jet ventilation system; the dual-channel jet ventilation system receives the cardiac cycle and single / dual frequency jet mode conversion point data sent by the monitoring system, and determines the dual / single frequency jet mode conversion point in combination with the input breathing ratio, implements the conversion from the normal frequency jet mode to the normal frequency / ECG-triggered composite jet mode at the single / dual frequency jet mode conversion point, and implements the conversion from the normal frequency / ECG-triggered composite jet mode to the normal frequency jet mode at the dual / single frequency jet mode conversion point. The breathing workstation and the oxygen supply method thereof adjust the jet mode according to the recipient's own physiological state, thereby achieving the purpose of improving the patient's survival rate.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a breathing workstation for rescue or auxiliary surgery and an oxygen supply method thereof. Background Art

[0002] With the widespread application of jet ventilation, supraglottic jet ventilation has been recommended by experts and scholars for airway intervention, emergency treatment of patients with respiratory arrest, and treatment of critically ill patients. In airway intervention, anesthesia and treatment share the narrow airway, and the airway is in an open state, and continuous high-frequency jet ventilation is used as a respiratory support method. High-frequency jet ventilation adopts the "Venturi" principle, which integrates the mutual influence of disease and treatment, but may cause high driving pressure and high frequency, which in turn may cause complications such as barotrauma and hypercapnia. Some foreign scholars have suggested the use of extracorporeal membrane oxygenation and transjugular vein replacement of carbon dioxide, but they cannot be widely used due to the disadvantages of large damage, high cost, and difficulty in promotion. The jet ventilators currently produced are only single-frequency jet mode, which cannot solve the risks brought by high-frequency jet ventilation.

[0003] In response to the current problems in respiratory reconstruction, the inventors provide a respiratory workstation and an oxygen supply method thereof, which, combined with the recipient's physiological indicator data, ensures sufficient ventilation and oxygen supply to improve the recipient's microcirculation while avoiding a series of complications such as hypoxemia, hypercapnia and barotrauma, effectively establishes artificial respiration and circulation, and improves the success rate of treatment. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the inventors have conducted intensive research and provided a breathing workstation and an oxygen supply method thereof, which have a normal frequency jet mode and a normal frequency / ECG triggered composite jet mode. The normal frequency jet mode uses a lower frequency for single-path jet, and the normal frequency / ECG triggered composite jet mode uses a lower frequency and a higher frequency to jointly implement dual-path jet. By receiving the original electrocardiogram data and according to the physiological state of each recipient, the single / dual-frequency jet mode switching point and the dual / single-frequency jet mode switching point are determined to implement the conversion between the two modes, so that the normal frequency / ECG triggered dual-path jet ventilation is ventilated during ventricular diastole, forming a positive pressure in the chest cavity, increasing the amount of blood returning to the heart, and reducing the heart load, the purpose of improving the survival rate of emergency patients is achieved, thereby completing the present invention.

[0005] The technical solution provided by the present invention is as follows:

[0006] In a first aspect, a respiratory workstation is provided, which has a normal frequency jet mode and a normal frequency / ECG-triggered composite jet mode, including a monitoring system and a dual-channel jet ventilation system, wherein:

[0007] The monitoring system is used to receive the original electrocardiogram data of the human body, analyze the original electrocardiogram data, extract the cardiac cycle and the single / dual-frequency jet mode switching point data and send them to the dual-channel jet ventilation system; wherein the single / dual-frequency jet mode switching point is located in the time period after the corresponding R wave band in the cardiac cycle;

[0008] The dual-channel jet ventilation system is used to receive the input normal frequency jet start signal, the normal frequency jet stop signal, and the cardiac cycle and single / dual frequency jet mode switching point data sent by the monitoring system, and respectively implement the start and stop of the normal frequency ventilation mode according to the input normal frequency jet start signal and the normal frequency jet stop signal; determine the dual / single frequency jet mode switching point according to the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, and the input respiratory ratio parameter, and implement the normal frequency jet mode to the normal frequency / ECG triggering complex at the single / dual frequency jet mode switching point. The dual-channel jet ventilation system uses low frequency to perform single-channel jet ventilation in the normal frequency / ECG-triggered composite jet mode. The dual-channel jet ventilation system uses low frequency and high frequency to perform dual-channel jet ventilation in the normal frequency / ECG-triggered composite jet mode.

[0009] In a second aspect, a method for supplying oxygen to a respiratory workstation adopts a normal frequency jet mode and a normal frequency / ECG-triggered composite jet mode to supply oxygen, comprising:

[0010] The original electrocardiogram data of the human body is received through the monitoring system, the original electrocardiogram data is analyzed, and the cardiac cycle and the single / dual-frequency jet mode switching point data are extracted and sent to the dual-channel jet ventilation system; wherein the single / dual-frequency jet mode switching point is located in the time period after the corresponding R wave band in the cardiac cycle;

[0011] The dual-channel jet ventilation system receives the input of the normal frequency jet start signal, the normal frequency jet stop signal, and the cardiac cycle and single / dual frequency jet mode switching point data sent by the monitoring system, and implements the start and stop of the normal frequency ventilation mode according to the input normal frequency jet start signal and the normal frequency jet stop signal; determines the dual / single frequency jet mode switching point according to the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, and the input respiratory ratio parameter, and implements the normal frequency jet mode to the normal frequency / ECG triggering complex at the single / dual frequency jet mode switching point. The dual-channel jet ventilation system uses low frequency to perform single-channel jet ventilation in the normal frequency / ECG-triggered composite jet mode. The dual-channel jet ventilation system uses low frequency and high frequency to perform dual-channel jet ventilation in the normal frequency / ECG-triggered composite jet mode.

[0012] A breathing workstation and oxygen supply method provided by the present invention have the following beneficial effects:

[0013] (1) The breathing workstation and oxygen supply method of the present invention have a normal frequency jet mode and a normal frequency / ECG-triggered composite jet mode. The normal frequency jet mode uses a relatively low frequency for single-path jet, and the normal frequency / ECG-triggered composite jet mode uses a relatively low frequency and a relatively high frequency to implement dual-path jet. By receiving the original electrocardiogram data and according to the physiological state of each recipient, the single / dual frequency jet mode switching point and the dual / single frequency jet mode switching point are determined and the uninterrupted switching between the two modes is implemented, so that the ventricular diastole corresponds to the normal frequency / ECG-triggered dual-path jet ventilation, forming (enhanced) intrathoracic positive pressure, increasing the amount of blood returning to the heart, reducing the heart load, and achieving the purpose of improving the survival rate of emergency patients;

[0014] (2) The breathing workstation of the present invention is equipped with an oxygen buffer tank, an air buffer tank and a mixed gas buffer tank, and each buffer tank is equipped with a pressure reducing valve, a pressure sensor, a flow sensor and an oxygen concentration sensor. The arrangement of the buffer tank, the valve and the sensor is conducive to the regulation of the oxygen content and the stability of the oxygen supply;

[0015] (3) The respiratory workstation of the present invention has data visualization and alarm functions, which is convenient for operators and subjects to use and monitor oxygen supply data and improve the safety of oxygen supply;

[0016] (4) The breathing workstation and oxygen supply method of the present invention can adjust the air supply volume according to the arterial oxygen saturation by monitoring the arterial oxygen saturation data, and thus are more applicable to the users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shows a schematic diagram of a respiratory workstation module;

[0018] Figure 2 A schematic diagram showing the connection between the buffer tank structure and the jet pipeline structure is shown;

[0019] Figure 3 A schematic diagram of the jet joint structure is shown. DETAILED DESCRIPTION

[0020] The following detailed description of the present invention will make the features and advantages of the present invention more clear and explicit.

[0021] According to a first aspect of the present invention, Figure 1 As shown, a respiratory workstation is provided, which has a normal frequency jet mode and a normal frequency / ECG-triggered composite jet mode, including a monitoring system and a dual-channel jet ventilation system, wherein:

[0022] The monitoring system is used to receive the original electrocardiogram data of the human body, analyze the original electrocardiogram data, extract the cardiac cycle and the single / dual-frequency jet mode switching point data and send them to the dual-channel jet ventilation system; wherein the single / dual-frequency jet mode switching point is located in the time period after the corresponding R wave band in the cardiac cycle;

[0023] The dual-channel jet ventilation system is used to receive the input normal frequency jet start signal, the normal frequency jet stop signal, and the cardiac cycle and single / dual frequency jet mode switching point data sent by the monitoring system, and respectively implement the start and stop of the normal frequency ventilation mode according to the input normal frequency jet start signal and the normal frequency jet stop signal; determine the dual / single frequency jet mode switching point according to the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, and the input respiratory ratio parameter, implement the conversion from the normal frequency jet mode to the normal frequency / ECG triggered composite jet mode at the single / dual frequency jet mode switching point, and implement the conversion from the normal frequency jet mode to the normal frequency / ECG triggered composite jet mode at the dual / single frequency jet mode switching point. At the switching point, the conversion from the normal frequency / ECG-triggered composite jet mode to the normal frequency jet mode is implemented. In each cardiac cycle, the conversion from the normal frequency jet mode to the normal frequency / ECG-triggered composite jet mode and from the normal frequency / ECG-triggered composite jet mode to the normal frequency jet mode is performed once. In the normal frequency jet mode, the dual-channel jet ventilation system only uses a lower frequency (such as 2 to 40 times / minute) for single-channel jet. In the normal frequency / ECG-triggered composite jet mode, the dual-channel jet ventilation system uses both a lower frequency (such as 2 to 40 times / minute) and a higher frequency (41 to 1200 times / minute) to implement dual-channel jet.

[0024] In the present invention, the normal frequency jet start signal and the normal frequency jet stop signal are input into the dual-circuit jet ventilation system by an operator such as a medical staff. The breathing ratio is the time ratio of the recipient's exhalation and inspiration, which is generally about 2:1. The ratio of the operation time of the normal frequency jet mode to the operation time of the normal frequency / ECG-triggered composite jet mode is similar to the breathing ratio. The breathing ratio of the recipient can be monitored by an operator such as a medical staff and then input into the dual-circuit jet ventilation system for setting, or the breathing ratio data is received by the monitoring system and sent to the dual-circuit jet ventilation system for setting.

[0025] In the present invention, the single / dual frequency jet mode switching point is located in the time period after the corresponding R wave band in the cardiac cycle, preferably in the time period where the T wave band after the R wave band is located, such as the corresponding T wave starting point. In the time period after the R wave, the normal frequency jet mode is converted to the normal frequency / ECG-triggered composite jet mode, and (enhanced) positive pressure jet ventilation is given to form intrathoracic positive pressure, increase the amount of blood returning to the heart, and reduce the heart load, so as to achieve the purpose of improving the survival rate of emergency patients.

[0026] The inventors have discovered that electrocardiogram data is the regular potential change data generated by the beating of the human heart. In the electrocardiogram data, all data appear regularly. The maximum potential value of each cardiac cycle is generally the peak of the R wave. Between the peaks of two R waves, the peak that appears first is the T wave, and the T wave can be located based on this.

[0027] Summarizing the above rules, the method for the monitoring system to determine the single / dual frequency jet mode switching point and cardiac cycle is given:

[0028] Step 1, the monitoring system receives the original electrocardiogram data, locates the R wave peak according to the original electrocardiogram data, and the time difference between adjacent R wave peaks is the cardiac cycle;

[0029] Step 2: The time point corresponding to 0.1 to 0.2 seconds after the peak value of the R wave appears is used as the single / dual frequency jet mode switching point.

[0030] In the present invention, the jet ventilation system includes a control element, a switch element and a dual-path jet ventilation pipeline, and is used to implement the conversion between jet modes, wherein:

[0031] The control element is used to receive the input normal frequency jet start signal and the normal frequency jet stop signal, respectively generate the normal frequency jet pipeline opening instruction and the normal frequency jet pipeline closing instruction and send them to the normal frequency jet pipeline switch; receive the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, determine the dual / single frequency jet mode switching point according to the input breathing ratio, and respectively generate the ECG-triggered jet pipeline opening instruction and the ECG-triggered jet pipeline closing instruction according to the single / dual frequency jet mode switching point and the dual / single frequency jet mode switching point and send them to the ECG-triggered jet pipeline switch;

[0032] The switch element includes a normal frequency jet pipeline switch and an ECG-triggered jet pipeline switch. The normal frequency jet pipeline switch receives a normal frequency jet pipeline opening instruction and a normal frequency jet pipeline closing instruction to respectively control the opening and closing of the normal frequency jet pipeline; the ECG-triggered jet pipeline switch receives an ECG-triggered jet pipeline opening instruction and an ECG-triggered jet pipeline closing instruction to respectively control the opening and closing of the ECG-triggered jet pipeline;

[0033] The dual-channel jet ventilation circuit includes a normal frequency jet circuit and an ECG-triggered jet circuit, which are used to transmit oxygen-containing gas. The normal frequency jet circuit is controlled by the normal frequency jet circuit switch, and is opened when the dual-channel jet ventilation system starts the ventilation function, and is closed when the dual-channel jet ventilation system stops the ventilation function; the ECG-triggered jet circuit is controlled by the ECG-triggered jet circuit switch, and is opened at the single / dual frequency jet mode switching point, so that the workstation enters the normal frequency / ECG-triggered composite jet mode, and is closed at the dual / single frequency jet mode switching point, so that the workstation enters the normal frequency jet mode; in the normal frequency jet mode, only the normal frequency jet circuit is in the open state, and single-channel jet is performed; in the normal frequency / ECG-triggered composite jet mode, the normal frequency jet circuit and the ECG-triggered jet circuit are both in the open state, and dual-channel jet is performed together. Among them, the normal frequency jet circuit uses a relatively low frequency (such as 2 to 40 times / minute) jet, and the ECG-triggered jet circuit uses a relatively high frequency (41 to 1200 times / minute) jet.

[0034] In the present invention, the monitoring system may be an electrocardiogram monitor, the control element may be a single chip microcomputer or a main control chip, such as the main control chip STM32F105RCT6; the switch element may be an electromagnetic threshold; and the dual-path jet ventilation pipeline is a dual hollow pipeline.

[0035] In the present invention, the control element controls the conversion between the normal frequency jet mode and the normal frequency / ECG-triggered composite jet mode in real time according to the cardiac cycle and ECG-triggered jet mode conversion point sent in real time by the monitoring system and the dual / single frequency jet mode conversion point obtained by analysis. However, the signal transmission between the monitoring system and the dual-channel jet ventilation system may be interrupted due to external factors. If the control element does not receive the cardiac cycle and single / dual frequency jet mode conversion point signal sent by the monitoring system within two consecutive cardiac cycles and the time above, the control element estimates the average cardiac cycle and the single / dual frequency jet mode conversion point and the dual / single frequency jet mode conversion point therein according to several cardiac cycles and single / dual frequency jet mode conversion point data received recently, such as 20, and implements the conversion between the normal frequency jet mode and the normal frequency / ECG-triggered composite jet mode during the signal interruption period according to the estimated single / dual frequency jet mode conversion point and the dual / single frequency jet mode conversion point.

[0036] In the present invention, if the control element has not received the cardiac cycle and single / dual-frequency jet mode switching point signal sent by the monitoring system after exceeding the set time threshold, it sends an ECG-triggered jet circuit closing instruction to the ECG-triggered jet circuit switch, controls the ECG-triggered jet circuit to close, and the dual-channel jet ventilation system only operates in the normal frequency jet mode.

[0037] In the present invention, Figure 2 As shown, the dual-circuit jet ventilation system also includes an oxygen buffer tank, an air buffer tank and a mixed gas buffer tank. The oxygen buffer tank is connected to an external oxygen source such as an oxygen concentrator pipeline, and the air buffer tank is connected to an external air source such as an air compressor pipeline. The oxygen branch drawn from the oxygen buffer tank and the air branch drawn from the air buffer tank merge into the mixed gas buffer tank, and the mixed gas buffer tank respectively draws out a normal frequency jet pipeline and an ECG-triggered jet pipeline. The pipeline outlets of the oxygen buffer tank, the air buffer tank and the mixed gas buffer tank are respectively equipped with a pressure reducing valve, a pressure sensor and a flow sensor to regulate and monitor the gas flow and pressure of each pipeline. The pressure sensor and the flow sensor transmit the monitored gas pressure and gas flow to the control element respectively; the oxygen buffer tank, the air buffer tank and the mixed gas buffer tank are respectively equipped with an oxygen concentration sensor and transmit the oxygen concentration data to the control element. The control element regulates the gas flow ratio transmitted by the oxygen buffer tank and the air buffer tank through the oxygen concentration in the oxygen buffer tank and the air buffer tank, and monitors the oxygen supply concentration through the oxygen concentration in the mixed gas buffer tank. When implementing respiratory reconstruction at disaster sites, the subjects received 80% oxygen concentration gas; during airway intervention, due to the involvement of laser therapy, the subjects received 40% oxygen concentration gas.

[0038] In the present invention, the monitoring system is also used to receive arterial oxygen saturation data and transmit the arterial oxygen saturation data to the control element of the dual-channel jet ventilation system. When the arterial oxygen saturation received by the monitoring system is not higher than 90%, the control element controls the driving pressure of any pressure reducing valve at the outlet of the mixed gas buffer tank pipeline (normal frequency jet pipeline or ECG triggered jet pipeline) to increase by 25% or the driving pressure to increase by 0.5MPa; when the arterial oxygen saturation received by the monitoring system is not lower than 98%, the control element controls the driving pressure of the pressure reducing valve at the corresponding outlet of the mixed gas buffer tank pipeline (normal frequency jet pipeline or ECG triggered jet pipeline) to decrease to the original setting value or the driving pressure to decrease by 0.5MPa.

[0039] The above-mentioned driving pressure can be adjusted by driving the adjustment through the control element signal, or the control element activates the alarm mechanism and is manually adjusted by an operator such as a medical staff.

[0040] In the present invention, Figure 3As shown, the dual-channel jet ventilation system also includes a jet connector, which is a hollow tubular structure, the rear section of which introduces a normal frequency jet line and an ECG-triggered jet line, and the front section is a standard port that cooperates with a conventional endotracheal tube. The gas transported by the normal frequency jet line and the ECG-triggered jet line enters the endotracheal tube through the jet connector and then enters the subject's airway.

[0041] In the present invention, the dual-path jet ventilation system further includes a display element, and the data received by the control element is visualized through the display element; the display element is a display screen, such as a 10.1-inch medical-grade wide-viewing angle IPS screen of model DMT10600K101_A2W.

[0042] In the present invention, the dual-channel jet ventilation system further includes an alarm element. When the data received by the control element exceeds a preset threshold, such as the control element does not receive the physiological index characteristic data sent by the monitoring system for a period of time exceeding the threshold, or the blood oxygen saturation is lower than 90%, or the driving pressure at the outlet of the oxygen buffer tank / air buffer tank / mixed gas buffer tank pipeline is higher or lower than the threshold, the control element controls the alarm element to start, providing a warning to operators such as medical personnel. The alarm element can be an audible and visual alarm.

[0043] According to a second aspect of the present invention, there is provided an oxygen supply method for a respiratory workstation, which adopts a normal frequency jet mode and a normal frequency / ECG-triggered composite jet mode to supply oxygen, comprising:

[0044] The original electrocardiogram data of the human body is received through the monitoring system, the original electrocardiogram data is analyzed, and the cardiac cycle and the single / dual-frequency jet mode switching point data are extracted and sent to the dual-channel jet ventilation system; wherein the single / dual-frequency jet mode switching point is located in the time period after the corresponding R wave band in the cardiac cycle;

[0045] The dual-channel jet ventilation system receives the input of the normal frequency jet start signal, the normal frequency jet stop signal, and the cardiac cycle and single / dual frequency jet mode switching point data sent by the monitoring system, and implements the start and stop of the normal frequency ventilation mode according to the input normal frequency jet start signal and the normal frequency jet stop signal; determines the dual / single frequency jet mode switching point according to the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, and the input respiratory ratio parameter, and implements the normal frequency jet mode to the normal frequency / ECG triggering complex at the single / dual frequency jet mode switching point. The dual-channel jet ventilation system uses low frequency to perform single-channel jet ventilation in the normal frequency / ECG-triggered composite jet mode. The dual-channel jet ventilation system uses low frequency and high frequency to perform dual-channel jet ventilation in the normal frequency / ECG-triggered composite jet mode.

[0046] In the present invention, the single / dual frequency jet mode switching point is determined by the following method: Step 1, the monitoring system receives the original electrocardiogram data, locates the R wave peak according to the original electrocardiogram data, and the time difference between adjacent R wave peaks is the cardiac cycle;

[0047] Step 2: The time point corresponding to 0.1 to 0.2 seconds after the peak value of the R wave appears is used as the single / dual frequency jet mode switching point.

[0048] In the present invention, the switching between the jet modes is implemented by the control element, the switch element and the dual-path jet ventilation pipeline in the jet ventilation system:

[0049] The control element receives the input normal frequency jet start signal and the normal frequency jet stop signal, generates the normal frequency jet pipeline opening instruction and the normal frequency jet pipeline closing instruction respectively, and sends them to the normal frequency jet pipeline switch; receives the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, determines the dual / single frequency jet mode switching point according to the input breathing ratio, generates the ECG-triggered jet pipeline opening instruction and the ECG-triggered jet pipeline closing instruction respectively according to the single / dual frequency jet mode switching point and the dual / single frequency jet mode switching point, and sends them to the ECG-triggered jet pipeline switch;

[0050] The switch element includes a normal frequency jet pipeline switch and an ECG-triggered jet pipeline switch. The normal frequency jet pipeline switch receives a normal frequency jet pipeline opening instruction and a normal frequency jet pipeline closing instruction to respectively control the opening and closing of the normal frequency jet pipeline; the ECG-triggered jet pipeline switch receives an ECG-triggered jet pipeline opening instruction and an ECG-triggered jet pipeline closing instruction to respectively control the opening and closing of the ECG-triggered jet pipeline;

[0051] The dual-channel jet ventilation circuit includes a normal frequency jet circuit and an ECG-triggered jet circuit, which are used to transmit oxygen-containing gas. The normal frequency jet circuit is controlled by the normal frequency jet circuit switch, and is opened when the dual-channel jet ventilation system starts the ventilation function, and is closed when the dual-channel jet ventilation system shuts down the ventilation function; the ECG-triggered jet circuit is controlled by the ECG-triggered jet circuit switch, and is opened at the single / dual frequency jet mode switching point to enter the normal frequency / ECG-triggered composite jet mode, and is closed at the dual / single frequency jet mode switching point to enter the normal frequency jet mode; in the normal frequency jet mode, only the normal frequency jet circuit is in the open state, and single-channel jet is performed; in the normal frequency / ECG-triggered composite jet mode, both the normal frequency jet circuit and the ECG-triggered jet circuit are in the open state, and dual-channel jet is performed together.

[0052] In the present invention, the control element controls the conversion between the normal frequency jet mode and the normal frequency / ECG triggered composite jet mode in real time according to the cardiac cycle and single / dual frequency jet mode conversion point sent in real time by the monitoring system, as well as the dual / single frequency jet mode conversion point obtained by analysis.

[0053] If the control element does not receive the cardiac cycle and single / dual-frequency jet mode switching point signals sent by the monitoring system within two consecutive cardiac cycles or more, the control element estimates the average cardiac cycle and the single / dual-frequency jet mode switching point and the dual / single-frequency jet mode switching point therein based on several cardiac cycles and single / dual-frequency jet mode switching point data received most recently, such as 20, and implements the switching between the normal frequency jet mode and the normal frequency / ECG triggered composite jet mode during the signal interruption period based on the estimated single / dual-frequency jet mode switching point and dual / single-frequency jet mode switching point.

[0054] Furthermore, when the signal transmission interruption between the control element and the monitoring system exceeds the set time threshold, the control element sends an ECG-triggered jet line closing instruction to the ECG-triggered jet line switch to control the ECG-triggered jet line to close, and the dual-channel jet ventilation system only operates in normal frequency jet mode.

[0055] In the present invention, an oxygen buffer tank, an air buffer tank and a mixed gas buffer tank are arranged in a dual-path jet ventilation system, the oxygen buffer tank is connected to an external oxygen source such as an oxygen concentrator pipeline, the air buffer tank is connected to an external air source such as an air compressor pipeline, the oxygen branch drawn from the oxygen buffer tank and the air branch drawn from the air buffer tank are merged into the mixed gas buffer tank, and the mixed gas buffer tank respectively draws out a normal frequency jet pipeline and an electrocardiogram triggered jet pipeline. The pipeline outlets of the oxygen buffer tank, the air buffer tank and the mixed gas buffer tank are respectively equipped with a pressure reducing valve, a pressure sensor and a flow sensor to regulate and monitor the gas flow and pressure of each pipeline, and the pressure sensor and the flow sensor transmit the monitored gas pressure and gas flow to the control element respectively; the oxygen buffer tank, the air buffer tank and the mixed gas buffer tank are respectively equipped with an oxygen concentration sensor and transmit the oxygen concentration data to the control element, and the control element regulates the gas flow ratio transmitted by the oxygen buffer tank and the air buffer tank through the oxygen concentration in the oxygen buffer tank and the air buffer tank, and monitors the oxygen supply concentration through the oxygen concentration in the mixed gas buffer tank.

[0056] In the present invention, the normal frequency jet pipeline and the ECG triggered jet pipeline merge into the jet connector, which is a hollow tubular structure, and the front section is a standard port that matches with a conventional endotracheal tube. The gas transported by the normal frequency jet pipeline and the ECG triggered jet pipeline enters the endotracheal tube through the jet connector, and then enters the airway of the subject.

[0057] In the present invention, the monitoring system also receives arterial oxygen saturation data and transmits the arterial oxygen saturation data to the control element of the dual-channel jet ventilation system. When it is detected that the arterial oxygen saturation is not higher than 90%, the control element controls the driving pressure of any pressure reducing valve at the outlet of the mixed gas buffer tank pipeline (normal frequency jet pipeline or ECG triggered jet pipeline) to increase by 25% or the driving pressure to increase by 0.5MPa; when it is detected that the arterial oxygen saturation is not lower than 98%, the control element controls the driving pressure of the pressure reducing valve at the corresponding outlet of the mixed gas buffer tank pipeline (normal frequency jet pipeline or ECG triggered jet pipeline) to decrease to the original setting value or the driving pressure to decrease by 0.5MPa.

[0058] In the present invention, when the data received by the control element exceeds a preset threshold, such as when the control element fails to receive the physiological indicator characteristic data sent by the monitoring system for a period of time exceeding the threshold, or the blood oxygen saturation is lower than 90%, or the pressure at the outlet of the oxygen buffer tank / air buffer tank / mixed gas buffer tank pipeline is higher or lower than the threshold, the control element sends an alarm instruction, controls the alarm element to start, implements the alarm, and provides a warning to medical personnel and other operators.

[0059] The present invention has been described in detail above in conjunction with specific implementations and exemplary examples, but these descriptions cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, a variety of equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its implementation methods, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

[0060] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A breathing workstation, characterized in that: The respiratory workstation has a normal frequency jet mode and a normal frequency / ECG-triggered composite jet mode, including a monitoring system and a dual-channel jet ventilation system. The monitoring system is used to receive the original electrocardiogram data of the human body, analyze the original electrocardiogram data, extract the cardiac cycle and the single / dual-frequency jet mode switching point data and send them to the dual-channel jet ventilation system; wherein the single / dual-frequency jet mode switching point is located in the time period after the corresponding R wave band in the cardiac cycle; The dual-channel jet ventilation system is used to receive the input normal frequency jet start signal, the normal frequency jet stop signal, and the cardiac cycle and single / dual frequency jet mode switching point data sent by the monitoring system, and respectively implement the start and stop of the normal frequency ventilation mode according to the input normal frequency jet start signal and the normal frequency jet stop signal; determine the dual / single frequency jet mode switching point according to the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, and the input respiratory ratio parameter, and implement the normal frequency jet mode to the normal frequency / ECG triggering complex at the single / dual frequency jet mode switching point. The dual-channel jet ventilation system converts the normal frequency / ECG-triggered composite jet mode to the normal frequency jet mode at the dual / single frequency jet mode conversion point, and converts the normal frequency jet mode to the normal frequency / ECG-triggered composite jet mode and the normal frequency / ECG-triggered composite jet mode to the normal frequency jet mode once in each cardiac cycle; in the normal frequency jet mode, the dual-channel jet ventilation system only uses low frequency for single-channel jet, and in the normal frequency / ECG-triggered composite jet mode, the dual-channel jet ventilation system uses low frequency and high frequency to implement dual-channel jet; The dual-path jet ventilation system includes a control element, a switch element and a dual-path jet ventilation pipeline, wherein: The control element is used to receive the input normal frequency jet start signal and the normal frequency jet stop signal, respectively generate the normal frequency jet pipeline opening instruction and the normal frequency jet pipeline closing instruction and send them to the normal frequency jet pipeline switch; receive the cardiac cycle and the single / dual frequency jet mode switching point sent by the monitoring system, determine the dual / single frequency jet mode switching point according to the input breathing ratio, and respectively generate the ECG-triggered jet pipeline opening instruction and the ECG-triggered jet pipeline closing instruction according to the single / dual frequency jet mode switching point and the dual / single frequency jet mode switching point and send them to the ECG-triggered jet pipeline switch; The switch element includes a normal frequency jet pipeline switch and an ECG-triggered jet pipeline switch. The normal frequency jet pipeline switch receives a normal frequency jet pipeline opening instruction and a normal frequency jet pipeline closing instruction to respectively control the opening and closing of the normal frequency jet pipeline; the ECG-triggered jet pipeline switch receives an ECG-triggered jet pipeline opening instruction and an ECG-triggered jet pipeline closing instruction to respectively control the opening and closing of the ECG-triggered jet pipeline; The dual-channel jet ventilation circuit includes a normal frequency jet circuit and an ECG-triggered jet circuit, which are used to transmit oxygen-containing gas. The normal frequency jet circuit is controlled by the normal frequency jet circuit switch, and is opened when the dual-channel jet ventilation system starts the ventilation function, and is closed when the dual-channel jet ventilation system stops the ventilation function; the ECG-triggered jet circuit is controlled by the ECG-triggered jet circuit switch, and is opened at the single / dual frequency jet mode switching point to enable the workstation to enter the normal frequency / ECG-triggered composite jet mode, and is closed at the dual / single frequency jet mode switching point to enable the workstation to enter the normal frequency jet mode; in the normal frequency jet mode, only the normal frequency jet circuit is in the open state, and single-channel jet is performed; in the normal frequency / ECG-triggered composite jet mode, both the normal frequency jet circuit and the ECG-triggered jet circuit are in the open state, and dual-channel jet is performed together. The control element controls the switching between the normal frequency jet mode and the normal frequency / ECG-triggered composite jet mode in real time according to the cardiac cycle and the single / dual frequency jet mode switching point sent in real time by the monitoring system, and the dual / single frequency jet mode switching point obtained by analysis; If the control element does not receive the cardiac cycle and single / dual-frequency jet mode switching point signals sent by the monitoring system within two consecutive cardiac cycles or more, the control element estimates the average cardiac cycle and the single / dual-frequency jet mode switching point and the dual / single-frequency jet mode switching point therein based on the most recently received cardiac cycle and single / dual-frequency jet mode switching point data, and implements the switching between the normal frequency jet mode and the normal frequency / ECG triggered composite jet mode during the signal interruption period based on the estimated single / dual-frequency jet mode switching point and dual / single-frequency jet mode switching point.

2. The breathing workstation according to claim 1, characterized in that: The single / dual-frequency jet mode switching point corresponds to the time period of the T wave band after the R wave band.

3. The breathing workstation according to claim 1, characterized in that: The monitoring system determines the single / dual frequency jet mode switching point and cardiac cycle by: The monitoring system receives the original ECG data and locates the R wave peak according to the original ECG data. The time difference between adjacent R wave peaks is the cardiac cycle. The time point corresponding to 0.1~0.2s after the appearance of the R wave peak is used as the single / dual frequency jet mode switching point.

4. The breathing workstation according to claim 1, characterized in that: If the control element has not received the cardiac cycle and single / dual-frequency jet mode switching point signal sent by the monitoring system after exceeding the set time threshold, it sends an ECG-triggered jet circuit closing instruction to the ECG-triggered jet circuit switch to control the ECG-triggered jet circuit to close, and the dual-circuit jet ventilation system only operates in the normal-frequency jet mode.

5. The breathing workstation according to claim 1, characterized in that: The dual-circuit jet ventilation system also includes an oxygen buffer tank, an air buffer tank and a mixed gas buffer tank. The oxygen buffer tank is connected to an external oxygen source pipeline, the air buffer tank is connected to an external air source pipeline, the oxygen branch led out of the oxygen buffer tank and the air branch led out of the air buffer tank merge into the mixed gas buffer tank, and a normal frequency jet pipeline and an ECG-triggered jet pipeline are respectively led out of the mixed gas buffer tank.

6. The breathing workstation according to claim 5, characterized in that: The pipeline outlets of the oxygen buffer tank, the air buffer tank and the mixed gas buffer tank are respectively installed with a pressure reducing valve, a pressure sensor and a flow sensor, and the pressure sensor and the flow sensor transmit the monitored gas pressure and gas flow to the control element respectively; Oxygen concentration sensors are installed in the oxygen buffer tank, air buffer tank and mixed gas buffer tank respectively, and transmit oxygen concentration data to the control element; the control element receives the oxygen concentration data, regulates the gas flow ratio transmitted by the oxygen buffer tank and the air buffer tank according to the oxygen concentration in the oxygen buffer tank and the air buffer tank, and monitors the oxygen supply concentration according to the oxygen concentration in the mixed gas buffer tank.

7. The breathing workstation according to claim 1, characterized in that: The monitoring system is also used to receive arterial blood oxygen saturation data and transmit the arterial blood oxygen saturation data to the control element of the dual-path jet ventilation system.

8. The breathing workstation according to claim 7, characterized in that: When the arterial blood oxygen saturation received by the monitoring system is not higher than 90%, the control element controls the driving pressure of any pressure reducing valve at the outlet of the normal frequency jet line or the ECG triggered jet line to increase by 25% or the driving pressure to increase by 0.5MPa; When the arterial blood oxygen saturation received by the monitoring system is not less than 98%, the control element controls the driving pressure of the pressure reducing valve at the corresponding outlet of the normal frequency jet pipeline or the ECG triggered jet pipeline to be lowered to the original set value or the driving pressure is lowered by 0.5MPa.

9. The respiratory workstation according to claim 1, characterized in that: The dual-channel jet ventilation system also includes a jet connector, which is a hollow tubular structure, a rear section of which introduces a normal frequency jet line and an ECG-triggered jet line, and a front section of which is a standard port that cooperates with a conventional endotracheal tube.

10. The respiratory workstation according to claim 1, characterized in that: The dual-path jet ventilation system further comprises a display element, and the data received by the control element is visualized through the display element; and / or The dual-path jet ventilation system further comprises an alarm element, and when the data received by the control element exceeds a preset threshold value, the control alarm element is activated.

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