CN108619601A - A heating tube for respiratory system, respiratory system and control method thereof - Google Patents

Abstract

The invention provides a heating pipe for a respiratory system, the respiratory system and a control method thereof, wherein the heating pipe comprises: a pipe body; the gas measuring device comprises a first joint, a second joint and a first measuring module, wherein the first measuring module is used for measuring the gas characteristics of the gas inlet end of the pipe body; the second measurement module is used for measuring the gas characteristics at the gas outlet end of the tube body; and the heating device is arranged between the first measuring module and the second measuring module, is electrically connected with the first measuring module and is used for transmitting signals and heating gas in the pipe body. The external circuit and the probe are removed to prevent infection. A respiratory system comprising a humidifier, a gas supply device, a heating tube as described above; and a controller. A respiratory system control method, comprising the steps of: measuring the air inlet end of the heating pipe; measuring the gas outlet end of the tube; outputting power; the heating power of the humidifier and/or the heating device is timely and accurately adjusted by measuring the gas characteristics, so that the generation of condensed water is prevented, and better comfortable gas is output for a patient.

Description

A heating tube for respiratory system, respiratory system and control method thereof

technical field

The invention relates to the field of medical equipment, in particular to a heating tube for a breathing system, a breathing system and a control method thereof.

Background technique

During the process of delivering the heated and humidified gas generated by the humidifier to the patient through the catheter (breathing circuit tube), due to the ambient temperature difference, it is easy to generate condensed water on the inner wall of the breathing circuit tube, and the existence of condensed water may cause large breathing problems. Hidden dangers, including condensed water is easy to breed bacteria and infect patients, and condensed water blocks the breathing circuit tube, resulting in the gas delivered to the patient end not reaching the relative standard temperature and humidity, which is likely to cause respiratory discomfort of the patient, and may even cause breathing difficulties and endanger the life safety of the patient For this reason, the prior art maintains the temperature of the heated and humidified gas by arranging heating wires in the transmission tube, which can prevent condensation and transmit the gas with relatively standard temperature and humidity to the patient.

At the same time, in order to accurately control the transmission of standard temperature and humidity gas to the patient, the existing respiratory humidification system is connected with an external probe to detect the gas characteristics such as temperature, humidity, temperature and humidity, pressure, etc. The probe at the gas port (humidification tank) and the probe at the gas outlet (patient), however, the external probe brings many disadvantages, such as easy to fall off if it is not installed correctly, the probe is easy to be damaged, infected, and increases the risk to the patient. risk. And the extra line connection causes the bloated and inconvenient use of the breathing apparatus.

At the same time, the gas characteristic information collected by the probe needs to be transmitted to the controller through an additional wire, which reduces the stability of the system.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

In view of the shortcomings of the prior art above, the object of the present invention is to provide a heating tube for a breathing system, a breathing system and a control method thereof. , aiming to solve the many shortcomings of the external probes of the respiratory system in the prior art as described in the background technology, and timely and accurately adjust the heating power of the humidifier and/or heating device by measuring the gas characteristics, that is, to prevent the generation of condensed water, It is also the problem of outputting a better comfort gas for the patient.

In order to achieve the above object, the present invention has taken the following technical solutions:

In a first aspect, the present invention provides a heating tube for a respiratory system, which includes

Pipe body; a first joint, the first joint is connected to one end of the pipe; a second joint, the second joint is connected to the other end of the pipe; a first measurement module is arranged on the first A joint is used to measure the gas characteristics of the gas inlet end of the pipe body; the heating device is arranged between the first measurement module and the second measurement module, and is electrically connected to the first measurement module and the second measurement module Sexual connection for transmitting signals and heating the gas in the tube.

In some embodiments of the first aspect the tube comprises:

a tube wall; and a helix disposed around the outside of the tube wall.

In some embodiments of the first aspect, the heating device is two heating wires arranged in the spiral part.

In some embodiments of the first aspect the first engagement member comprises:

The first receiving part; the first connecting part; the first receiving part is connected to the pipe body, one end of the first connecting part is sleeved on the first receiving part, and the other end is connected to the respiratory system.

In some embodiments of the first aspect, the first receiving member includes:

A receiving body; a power connector; the power connector passes through the through hole of the first connector and is arranged on the side wall of the receiving body, and the receiving body is connected to the pipe body.

In some embodiments of the first aspect, the power connector has a built-in 3-pin plug partially in contact with the heating device.

In some embodiments of the first aspect the second engagement member comprises:

The second receiving part; the second connecting part; the second receiving part is connected with the pipe body, one end of the second connecting part is sleeved on the second receiving part, and the other end is connected to the patient's breathing mask.

In some embodiments of the first aspect, the first measurement module is placed on the first receiving part or the first connecting part, including a first PCB board, and a first temperature sensor is arranged on the first PCB board, The first PCB board is connected with the heating device.

In some embodiments of the first aspect, the second measurement module is arranged on the second receiving member or the second connecting member, and includes a second PCB board, on which a second temperature sensor and a diode are arranged on the PCB board , the second PCB board is connected to the heating device.

In some embodiments of the first aspect, the second measurement module is arranged on the second receiving member or the second connecting member, and includes a second PCB board, and the second PCB board is provided with a sensor for detecting temperature, temperature and humidity. , one or more digital sensors of humidity or pressure, and an MCU control chip, the second PCB board is connected to the heating device.

In some embodiments of the first aspect, the gas characteristic is one or a combination of temperature, humidity, temperature and humidity, and pressure of the gas.

In some embodiments of the first aspect, the first measurement module, the second measurement module, and the heating device measure and heat within a cycle time.

In a second aspect, the present invention provides a respiratory system, comprising

a gas supply for generating a gas supply to the patient; a heating tube as described above;

and a controller, the controller obtains the gas characteristic values of the first measurement module and the second measurement module, and based on the gas characteristic values, outputs a control signal to control the heating power of the heating device and/or humidifier.

In some embodiments of the second aspect, when the gas characteristic value is lower than or higher than a preset standard value, the controller outputs a control signal to adjust the heating power of the heating device and/or humidifier.

In some embodiments of the second aspect, the controller controls the first measurement module, the second measurement module, the heating device and/or the humidifier to measure and/or generate heat power within a cycle time.

In a third aspect, the present invention provides a respiratory system control method, comprising the following steps:

Measuring steps at the inlet end of the heating tube: measuring the gas characteristics at the inlet end of the heating tube used in the respiratory system; measuring steps at the gas outlet end of the heating tube: measuring the gas characteristics at the gas outlet end of the heating tube used in the breathing system; heating steps: obtaining It is used for gas characteristic values at the inlet port and gas outlet port of the heating tube of the respiratory system, and outputs control signals to control the heating power of the heating device and/or humidifier.

In some embodiments of the third aspect, the step of outputting power is specifically: when the gas characteristic values at the inlet port and the gas outlet port of the heating tube used in the breathing system are lower than or higher than a preset standard value, outputting The control signal adjusts the heating power of the heating device and/or the humidifier.

In some embodiments of the third aspect, the step of measuring the inlet end of the heating tube, the step of measuring the gas outlet end of the heating tube, and the heating step are performed within a cycle time.

A heating tube for a breathing system, a breathing system and a control method thereof provided by the present invention, by setting a first measurement module at the inlet end of the heating tube and a second measurement module at the gas outlet end, the convection heating is completed. The gas in the tube is used to measure the gas characteristics, thus eliminating the need for an external probe, which avoids many disadvantages of the external probe, such as easy to fall off if not installed correctly, the probe is easy to be damaged, infected, and increases the risk to patients. And the extra line connection causes the bloated and inconvenient use of the breathing apparatus.

At the same time, during the measurement process, the heating device sends the measurement data to the controller, which saves additional wires for transmission of the measurement data and improves the system stability.

At the same time, the heating device arranged on the heating pipe heats the gas flowing through the heating pipe to prevent the generation of condensed water and reduce many potential safety hazards caused by condensed water.

At the same time, based on the gas characteristic data measured by the measurement module at the inlet and outlet ends of the heating tube, the humidification power of the humidifier and the heating power of the heating device are controlled by the controller, so as to better prevent condensed water and deliver better The gas is given to the patient to increase the patient's breathing comfort.

Description of drawings

Fig. 1 is a schematic diagram of the respiratory system of the present invention.

Fig. 2 is an exploded view of the heating tube used in the respiratory system according to the present invention.

Fig. 3 is a cross-sectional view of the heating tube used in the breathing system according to the present invention.

FIG. 4 is a circuit diagram of Embodiment 1 of the present invention.

Fig. 5 is a circuit diagram of Embodiment 2 of the present invention.

Detailed ways

The present invention provides a heating tube for a respiratory system, a respiratory system and a control method thereof. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of the breathing system of the present invention, which is a breathing system used together with a heating tube. The breathing system includes a breathing circuit and a humidifier 20 .

Gas is transported in the breathing circuit. The gas is transmitted from the gas supply device 10 to the humidifier 20, and the humidifier 20 humidifies the gas, and the humidified gas enters the heating tube 30 from the air inlet port 31 to be heated and transferred to the gas outlet port 32 to connect with the patient interface. The patient interface receives the warmed and humidified gas.

Preferably, the gas supply device 10 is a ventilator or blower or other suitable source of pressurized gas suitable for breathing or for use in medicine.

The humidifier 20 includes a humidifying chamber 21, which contains a certain volume of liquid. In some embodiments, the humidifying chamber 21 can be detached from the humidifier 20 for easy disinfection or placement. The humidification chamber 21 is provided with a gas inlet and an outlet, the inlet end 31 of the heating tube 30 is configured to be connected to the outlet on the humidification chamber 21, and the gas outlet end 32 is configured to be connected to the patient via the patient interface. In some embodiments, The patient end of the inspiratory catheter is directly configured to connect to a patient interface including, but not limited to, a tube cover, Y-joint, mask, face mask, nasal mask, cannula.

In some embodiments, the breathing circuit further includes an exhalation conduit through which the gas exhaled by the patient returns to the gas supply device 10 .

The humidifier 20 also includes a heating plate 22, the humidifying chamber 21 is in direct contact with the heating plate 22, and the liquid in the humidifying chamber 21 is heated by heat conduction.

The respiratory system may also include a controller (not shown in the figure), and the controller may be arranged on the humidifier 20 . In this embodiment, one or more controllers are arranged on the humidifier base 23 . In some embodiments, the humidifier base 23 also includes one or more storage devices 23A or other suitable storage components (not shown in the figure), and in some embodiments, the humidifier base 23 also includes a control panel 23B for controlling The panel 23B includes, but is not limited to, a display screen or a joystick for providing user display information or receiving user operation input. The display screen can be used to display the gas characteristic data measured by the humidifier 20 or to adjust preset gas characteristic parameters by inputting on the display screen or operating the joystick.

Preferably, the controller is a microprocessor based controller executing computer software commands stored in associated memory 23A. For example, according to the gas characteristic parameter set by the user and the gas characteristic parameter sensed by the sensor, the controller controls the heating power of the heating plate 22 and the heating device 400 .

Please refer to FIG. 2 and FIG. 3 at the same time. FIG. 2 is an exploded view of the heating tube used in the breathing system of the present invention. Fig. 3 is a cross-sectional view of the heating tube used in the breathing system according to the present invention. Fig. 2 and Fig. 3 are the overall structural diagrams of the heating tube 30 for the respiratory system according to the preferred embodiment of the present invention, the heating tube 30 includes the tube body 100; the first joint 200, the first joint 200 and the tube body 100 is connected at one end; the second joint 300 is connected to the other end of the pipe body 100; the first measurement module 201 is arranged on the first joint 200 for measuring the air inlet port 31 of the pipe body 100 Gas characteristics; the second measurement module 301 is arranged on the second joint 300 for measuring the gas characteristics of the gas outlet end 32 of the pipe body 100; the heating device 400 is arranged between the first measurement module 201 and the second measurement module 301 , is electrically connected with the first measurement module 201 and the second measurement module 301 for transmitting signals and heating the gas flowing through the pipe body 100 .

1 to 3, the heating tube 30 of the preferred embodiment of the present invention is configured such that the air inlet end 31 is connected to the outlet on the humidifier 20 through the first joint 200, and the air outlet end 32 is connected through the second joint. 300 is connected to the patient interface, the gas generated by the gas supply device 10 enters the humidification chamber 21 through the inlet on the humidification chamber 21, is humidified in the humidification chamber 21, and passes through the outlet on the humidification chamber 21, flows through the heating tube 30, and passes through The patient interface transmits to the patient.

In some embodiments, the heating tube 30 is extruded from one or more polymers, preferably the heating tube 30 is flexible as a whole, and preferred polymers include linear low density polyethylene (LLDPE), low density polyethylene (LDPE), polypropylene (PP), polyolefin plastomer (POP), ethylene vinyl acetate (EVA), plasticized polyvinyl chloride (PVC), or blends of two or more of these materials .

Further, the heating tube 30 includes a tube body 100 , one end of the tube body 100 is connected to the first joint part 200 , and the other end is connected to the second joint part 300 .

Further, the tube body 100 includes a tube wall 110 and a spiral portion 120 surrounding the outside of the tube wall 110 . In some embodiments, the tube wall 110 is transparent and visible, which is convenient for users to observe the condensed water condition in the heating tube 30 .

The heating tube 30 includes a first measurement module 201 , and the first measurement module 201 is disposed on the first joint 200 for measuring gas characteristics of the gas inlet end 31 of the heating tube 30 .

The heating tube 30 includes a second measurement module 301 , and the second measurement module 301 is disposed on the second joint 300 for measuring gas characteristics of the gas outlet end 32 of the heating tube 30 .

In the present invention, gas characteristics refer to one or a combination of temperature, humidity, temperature and humidity, and pressure of the gas.

The heating pipe 30 also includes a heating device 400. The heating device 400 can be arranged in any possible position, such as in the pipe body 100 or on the pipe wall 110. In the present invention, the heating device 400 is two spirally wound heating wires, respectively The first heating wire 410 and the second heating wire 420 are housed in the spiral part 120 . The heating device 400 is disposed between the first measurement module 201 and the second measurement module 301 , and is electrically connected with the first measurement module 201 and the second measurement module 301 . The heating device 400 can be controlled by a controller in the breathing system, and the controller is configured to receive the gas characteristic values of the first measurement module 201 and the second measurement module 301, and then perform logic control on the power supply of the heating device 400, and adjust the heating device 400. Heating power. In some embodiments, the controller includes a power supply configured to provide power to the heating device 400 . For example, the controller can control the heating power of the heating device 400 by transmitting varying power, current, voltage or a combination thereof to the heating device 400 .

In this embodiment, the first heating wire 410 and the second heating wire 420 of the heating device 400 can be used to transmit signals to and from the controller.

During specific work, when the controller outputs a control signal to control the first measurement module 201 and the second measurement module 301 to measure gas characteristics, the heating wire acts as a wire between the first measurement module 201 and the second measurement module 301, and is used to connect the first measurement module 201 to the second measurement module 301. The gas characteristic data measured by the first measurement module 201 and the second measurement module 301 are transmitted to the controller; when the controller outputs a control signal to control the heating device 400 to heat, the heating wire will generate heat and heat the gas flowing through the heating tube 30 to prevent the condensation of water produce. The first measurement module 201 and the second measurement module 301 are controlled by the controller, and the heating device 400 measures and heats in the cycle time, and the measurement and heating can be completed without external probes or other circuits, avoiding many problems caused by external probes. Disadvantages, such as improper installation is easy to fall off, the probe is easily damaged, and infection increases the risk to the patient. Simultaneously simplify the system and facilitate system installation or movement. At the same time, the heating wire acts as a wire during the measurement process to transmit measurement data, thereby saving additional wires and improving system stability.

The first connecting part 200 includes a first receiving part 210 and a first connecting part 220, the first receiving part 210 is connected with the pipe body 100, one end of the first connecting part 220 is sleeved on the first receiving part 210, and the other end is connected to the hose, The patient connection or humidifier 20 is connected, in this embodiment, the other end is connected to the outlet of the humidification chamber 21 .

Further, the first receiving part 210 includes a receiving body 211 and a power connector 212, the power connector 212 passes through the through hole of the first connecting part 220, and is arranged on the side wall of the receiving body 211, and the receiving body 211 is connected to the pipe body 100 . In some embodiments, the receiving body 211 is integrally formed in a hollow tubular shape. In some embodiments, the receiving body 211 may include upper and lower halves, and the hollow tubular shape is formed by including but not limited to buckle. A power connector 212 configured to be directly or indirectly connected to a power source is disposed on the side wall of the carrying body.

Further, the power connector 212 has a built-in 3-pin plug 212A partially in contact with the heating device 400 . In operation, the power connector 212 is directly connected to the humidifier 20 , and in some embodiments, the power connector 212 is connected to the humidifier 20 through a data cable. The respiratory system applies voltage to the first measurement module 201 , the second measurement module 301 and the heating device 400 through the 3-pin plug 212A.

Further, the second coupling part 300 includes a second receiving part 310 and a second connecting part 320, the second receiving part 310 is connected with the pipe body 100, one end of the second connecting part 320 is sleeved on the second receiving part 310, and the other end It is connected to a hose, a patient connection or a humidifier 20, and in this embodiment, the other end is connected to a patient interface.

Further, protrusions 500 providing frictional force are provided on the outer surfaces of the first connecting member 220 and the second connecting member 320, which can facilitate installation and disassembly by users.

Furthermore, the shape of the protrusion 500 is oval, and the protrusion 500 is provided with a plurality of stripes for providing friction.

The heating tube 30 for the respiratory system disclosed in the present invention is provided with a first measurement module 201 and a second measurement module 301 at the air inlet end 31 and the air outlet end 32 of the heating tube 30 respectively, so as to be different in the tube body 100 The gas characteristic is measured at the position, and the controller receives the gas characteristic data, and adjusts the heating power of the humidifier 20 and/or the heating device 400 through a control signal, thereby improving the precision of output control.

In a specific embodiment of the invention, the first measurement module 201 is arranged on the first receiving member 210 or the first connecting member 220, including a first PCB board 201A, and a first temperature sensor 201B is arranged on the first PCB board 201A, And the first PCB board 201A is connected with the heating device 400 .

The second measurement module 301 is arranged on the second receiving part 310 or the second connecting part 320, and includes a second PCB board 301A, and a second temperature sensor 301B and a diode 301C are arranged on the second PCB board 301A, and the second PCB board 301A Connect with heating device 400.

Please refer to FIG. 4 , which is a circuit diagram of Embodiment 1 of the present invention. Part of the pins in the 3-pin plug 212A are in contact with the heating device 400. In this embodiment, the pin a1 of the three pins a1, a2, a3 is connected to one end of the first heating wire 410 of the heating device 400, and the pins a2 is connected to one end of the second heating wire 420 of the heating device 400 , and the pin a3 is connected to the first temperature sensor 201B through a wire. The other ends of the first heating wire 410 and the second heating wire 420 are connected in series with the second temperature sensor 301B through the second PCB board 301A, and the diode 301C is connected in parallel with the second sensor.

During specific work, the controller of the respiratory system is connected to the three pins through a switch (not shown in the figure), and applies voltage to the first measurement module 201 , the second measurement module 301 and the heating device 400 .

During specific operation, when the controller applies the first detection voltage p1 to the pin a3, the first measurement module 201 determines the gas temperature at the air inlet port 31 of the heating tube 30; when the controller applies the second detection voltage p2 to the pin a1, the diode 301C is turned on, and the second measurement module 301 determines the gas temperature at the gas outlet 32 of the heating tube 30; when the controller applies the heating voltage p3 to the pin a2, the diode 301C is turned off, and the heating device 400 heats the gas flowing through the tube body 100.

The controller can control the sequence and duration of measurement and heating by the first measurement module 201 , the second measurement module 301 and the heating device 400 according to preset logic in each time period, and the sequence is performed in a cyclical order. In some embodiments, the controller may preferentially control the first measurement module 201 to measure, followed by the second measurement module 301 to measure, and finally the heating device 400 to heat; in some embodiments, the controller may also preferentially control the first measurement module 201 to measure , followed by heating by the heating device 400 , and finally measured by the second measurement module 301 .

Further, the controller outputs a control signal to control the heating power of the humidifier 20 according to the gas characteristic data of the first measurement module 201 and the second measurement module 301 .

In another specific embodiment 2 of the invention, the first measurement module 201 is arranged on the first receiving member 210 or the first connecting member 220, including a first PCB board 201A, and a first temperature sensor is arranged on the first PCB board 201A 201B, the first PCB board 201A is connected to the heating device 400 .

The second measurement module 301 is arranged on the second receiving part 310 or the second connecting part 320, and includes a second PCB board 301A, and the second PCB board 301A is provided with one or more components for detecting temperature, temperature and humidity, humidity or pressure. Kind of digital sensor 301D and MCU control chip 600.

Please refer to FIG. 5 , which is a circuit diagram of Embodiment 2 of the present invention. Part of the pins in the 3-pin plug 212A are in contact with the heating device 400. In this embodiment, the pin a3 of the three pins a1, a2, and a3 is connected to one end of the first heating wire 410 of the heating device 400. a2 is connected to one end of the second heating wire 420 of the heating device 400 , and the pin a1 is connected to the first temperature sensor 201B through a wire. The MCU control chip 600 is connected to the digital sensor 301D through pins, the MCU control chip 600 is connected in parallel with a step-down voltage and several capacitors, the step-down voltage is used to reduce the input voltage for the MCU control chip 600 to work, and some capacitors are used for filtering and storage power to continuously power the MCU. The first heating wire 410 and the second heating wire 420 are connected in series with the MCU control chip 600 .

During specific work, the controller of the respiratory system applies voltage to the first measurement module 201 , the second measurement module 301 and the heating device 400 through the 3-pin plug 212A.

During specific work, when the controller applies the first detection voltage p1 to the pin a1, the first temperature sensor 201B determines the gas temperature at the air inlet port 31 of the heating tube 30; when the controller applies the heating voltage p2 to the pin a2, the switch S1 conducts When the switch S2 is turned off, the MCU control chip 600 collects and stores the gas characteristic data of the gas outlet port 32, the MOS tube Q1 is turned on, and the heating device 400 heats the gas flowing through the heating tube 30; the controller applies the second detection voltage p3 to When pin a2 is inserted, S1 is turned off, S2 is turned on, and the MCU control chip 600 returns the collected data to the data collection terminal M1.

Further, the controller outputs a control signal to control the heating power of the humidifier 20 according to the gas characteristic data of the first measurement module 201 and the second measurement module 301 .

Further, the controller can control the order of measurement and heating power of the first measurement module 201, the second measurement module 301, the heating device 400 and/or the humidifier 20 according to the preset logic in each time period, and The cycle is performed sequentially.

In this embodiment, the digital sensor 301D on the second PCB board 301A can be a digital sensor 301D that measures one or a combination of temperature, humidity, temperature and humidity or pressure, for example, a digital temperature sensor, a digital temperature and humidity sensor, One or a combination of pressure sensor and temperature sensor.

Through the above-mentioned control method, the heating device 400 is used to transmit signals, and at the same time, the first measurement module 201 and the second measurement module 301 respectively measure the temperature at the inlet end 31 of the heating tube 30 and the gas characteristics at the gas outlet end 32, and according to the gas characteristic information The heating power of the heating device 400 and/or the humidifier 20 is controlled, and the gas characteristics of the breathing gas are fully monitored and adjusted, so that the patient can breathe the gas with the best comfort.

In the embodiment provided by the present invention, the temperature sensor is a thermistor, which can be replaced by other temperature sensors in actual work.

The present invention also provides a respiratory system, including a humidifier 20, and a gas supply device 10 for generating the gas supply device 10 to the patient; the heating tube 30 as described above;

and a controller, the controller obtains the gas characteristic values of the first measurement module 201 and the second measurement module 301, and based on the gas characteristic values, outputs a control signal to control the heating device 400 and/or the humidifier 20 heating power.

During specific operation, the gas supply device 10 generates respiratory gas and enters the humidifier 20 , the controller controls the heating power of the humidifier 20 to heat and humidify the gas entering the humidifier 20 , and the humid and hot gas flows into the patient interface through the heating tube 30 and enters the patient.

When the gas characteristic value is lower than or higher than a preset standard value, the controller outputs a control signal to adjust the heating power of the heating device 400 and/or the humidifier 20 .

Further, the controller can control the sequence and duration of measurement and heating power of the first measurement module 201, the second measurement module 301, the heating device 400 and/or the humidifier 20 according to the preset logic in each time period , and proceed in a cyclic order.

The present invention also provides a control method of the respiratory system, comprising:

Measuring steps at the inlet end of the heating tube: measuring the gas characteristics at the inlet end of the heating tube used in the breathing system;

Measuring steps at the gas outlet end of the heating tube: measuring the gas characteristics at the gas outlet end of the heating tube used in the respiratory system;

Output power step: Obtain gas characteristic values at the inlet port and gas outlet port of the heating tube used in the breathing system, and output control signals to control the output power of the heating device and/or humidifier.

The step of measuring the air inlet end of the heating tube is specifically: the first measurement module measures the gas characteristics of the air inlet end of the heating pipe used in the respiratory system, and sends the measured gas characteristic data of the air inlet end to the controller;

The step of measuring the gas outlet end of the heating tube specifically includes: the second measurement module detects the gas characteristics of the gas outlet end of the heating tube used in the respiratory system, and sends the measured gas characteristic data of the gas outlet end to the controller.

The step of outputting power is specifically: when the gas characteristic value of the gas inlet port and the gas outlet port of the heating tube used in the breathing system is greater than or smaller than a preset standard value, outputting a control signal to adjust the output of the heating device and/or humidifier power.

Further, the step of measuring the inlet end of the heating tube, the step of measuring the gas outlet end of the heating tube and the step of outputting power are performed cyclically within the cycle time.

In summary, the present invention provides a heating tube for a breathing system, a breathing system and a control method thereof. The heating tube includes: a tube body; a first joint and a second joint for measuring the temperature of the tube body The first measurement module of the gas characteristics at the inlet end; the second measurement module for measuring the gas characteristics of the gas outlet end of the pipe body; the heating device is arranged between the first measurement module and the second measurement module and is electrically connected with it Connection for transmitting signals and heating the gas inside the tube. Remove external lines and probes to prevent infection. A breathing system including a humidifier, gas supply, heated tubes as described above; and a controller. The respiratory system control method comprises the steps of: measuring the inlet end of the heating tube; measuring the gas outlet end of the tube; output power; adjusting the heating power of the humidifier and/or heating device in time and accurately by measuring the gas characteristics, that is, preventing condensation water The generation, and output a better comfort gas for the patient.

It can be understood that those skilled in the art can make equivalent replacements or changes according to the technical solutions of the present invention and the concept of the present invention, and all these changes or replacements should belong to the protection scope of the appended claims of the present invention.

Claims (18)

1. A heating tube for respiratory system, comprising: pipe body; a first joint, which is connected to one end of the tubular body; a second joint, the second joint is connected to the other end of the tube; The first measurement module is arranged on the first joint and is used to measure the gas characteristics of the air inlet end of the pipe body; The second measurement module is arranged on the second joint and is used to measure the gas characteristics of the gas outlet end of the pipe body; The heating device is arranged between the first measurement module and the second measurement module, and is electrically connected with the first measurement module and the second measurement module, and is used for transmitting signals and heating the gas in the tube. 2. The heating tube for the respiratory system according to claim 1, wherein the tube body comprises: pipe wall; And a spiral part arranged around the outer side of the tube wall. 3 . The heating tube for the respiratory system according to claim 2 , wherein the heating device is two heating wires arranged in the spiral part. 4 . 4. The heating tube for a respiratory system according to claim 1, wherein the first joining member comprises: the first undertaking; first connector; The first receiving part is connected to the pipe body, one end of the first connecting part is sleeved on the first receiving part, and the other end is connected to the respiratory system. 5. The heating tube for the respiratory system according to claim 4, wherein the first receiving member comprises: Undertake the body; power connector; The power connector passes through the through hole of the first connector and is disposed on the side wall of the receiving body, and the receiving body is connected to the pipe body. 6. The heating tube for the respiratory system according to claim 5, wherein the power connector comprises a three-pin plug partially in contact with the heating device. 7. The heating tube for a respiratory system according to claim 1, wherein the second joining member comprises: The second undertaking; second connector; The second receiving part is connected to the tube body, one end of the second connecting part is sheathed on the second receiving part, and the other end is connected to a hose or a machine or a patient interface. 8. The heating tube for the respiratory system according to claim 4, characterized in that, the first measurement module is placed on the first receiving part or the first connecting part, including a first PCB board, the A first temperature sensor is arranged on the first PCB, and the first PCB is connected to the heating device. 9. The heating tube for the respiratory system according to claim 7, wherein the second measuring module is arranged on the second receiving part or the second connecting part, comprising a second PCB board, the A second temperature sensor and a diode are arranged on the PCB, and the second PCB is connected to the heating device. 10. The heating tube for the respiratory system according to claim 7, characterized in that, the second measurement module is arranged on the second receiving part or the second connecting part, including a second PCB board, the The second PCB board is provided with a digital sensor and an MCU control chip for detecting one or more of temperature, temperature and humidity, humidity or pressure, and the second PCB board is connected to the heating device. 11. The heating tube for a breathing system according to claim 1, wherein the gas characteristic is one or a combination of temperature, humidity, temperature and humidity, and pressure of the gas. 12. The heating tube for respiratory system according to claim 1, characterized in that, the first measurement module, the second measurement module, and the heating device measure and heat within a cycle time. 13. A respiratory system, comprising a humidifier, characterized in that: also comprising a gas supply for generating a gas supply to the patient; The heating tube as claimed in any one of claims 1 to 12; and a controller, the controller obtains the gas characteristic values of the first measurement module and the second measurement module, and based on the gas characteristic values, outputs a control signal to control the heating power of the heating device and/or humidifier. 14. The breathing system according to claim 13, characterized in that, when the gas characteristic value is lower than or higher than a preset standard value, the controller outputs a control signal to adjust the heating device and/or humidifier Heating power. 15. The respiratory system according to claim 13, wherein the controller controls the first measuring module, the second measuring module, the heating device and/or the humidifier to measure and/or heat power within a cycle time . 16. A method for controlling the respiratory system, comprising the following steps: Measuring steps at the inlet end of the heating tube: measuring the gas characteristics at the inlet end of the heating tube used in the breathing system; Measuring steps at the gas outlet end of the heating tube: measuring the gas characteristics at the gas outlet end of the heating tube used in the respiratory system; Heating step: Obtain gas characteristic values at the inlet port and gas outlet port of the heating tube used in the respiratory system, and output control signals to control the heating power of the heating device and/or humidifier. 17. The breathing system control method according to claim 16, wherein the heating step is specifically: the gas characteristic values at the inlet end and the air outlet end of the heating tube used for the breathing system are lower or higher than a preset standard value , output a control signal to adjust the heating power of the heating device and/or humidifier. 18. The breathing system control method according to claim 16, the step of measuring the air inlet end of the heating tube, the measuring step of the air outlet end of the heating tube, and the heating step are performed within a cycle time.