CN108619601B

CN108619601B - Heating pipe for respiratory system, respiratory system and control method of respiratory system

Info

Publication number: CN108619601B
Application number: CN201810419439.6A
Authority: CN
Inventors: 徐结兵; 于海滨; 赵军
Original assignee: Vincent Medical Manufacturing Co ltd
Current assignee: Vincent Medical Manufacturing Co ltd
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2021-06-08
Anticipated expiration: 2038-05-04
Also published as: CN108619601A

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

Heating pipe for respiratory system, respiratory system and control method of respiratory system

Technical Field

The invention relates to the field of medical instruments, in particular to a heating pipe for a respiratory system, the respiratory system and a control method of the respiratory system.

Background

The humidification gas of heating that produces by the humidifier passes through pipe (breathing return line pipe) and carries gas for patient in-process, because the reason of the environmental temperature difference, produce the comdenstion water on the inner wall of breathing return line pipe easily, the existence of comdenstion water probably causes great breathing hidden danger, thereby infect the patient including the comdenstion water breed bacterium easily, the comdenstion water blocks up breathing return line pipe, the gas that leads to carrying patient end does not reach relative standard humiture, cause patient's breathing discomfort easily, perhaps cause patient breathing difficulty and harm patient life safety even, therefore, prior art is through setting up the heater strip in the transmission pipe, keep heating the temperature of humidification gas, can prevent the comdenstion water, can transmit relative standard humiture gas to the patient again.

Meanwhile, for accurately controlling the standard temperature and humidity gas to be transmitted to a patient, the existing breathing humidification system is externally connected with a probe and used for detecting gas characteristics such as gas temperature, humidity, temperature and humidity, pressure and the like in the current breathing loop, and the existing breathing humidification system comprises the probe arranged at the air inlet end (humidification tank) and the probe arranged at the air outlet end (patient), however, the external probe brings many defects, such as easy falling off of incorrect installation, easy damage of the probe, infection and increased risk to the patient. And additional wiring connections lead to bulkiness and inconvenient use of the breathing apparatus.

Meanwhile, the gas characteristic information acquired by the probe needs to be transmitted to the controller through an additional lead, so that the stability of the system is reduced. Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a heating tube for a respiratory system, a respiratory system and a control method thereof. The respiratory system external probe aims to solve the problems of various defects in the prior art as described in the background art and the problems of preventing the generation of condensed water and outputting comfortable gas for a patient by measuring the gas characteristics and timely and accurately adjusting the heating power of a humidifier and/or a heating device.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the present invention provides a heating tube for a respiratory system, comprising

A pipe body; the first joint is connected with one end of the pipe body; a second joint connected to the other end of the pipe body; the first measuring module is arranged on the first joint and used for measuring the gas characteristics at the gas inlet end of the pipe 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 the second measuring module, and is used for transmitting signals and heating the gas in the pipe body.

In some embodiments of the first aspect the tubular body comprises:

a tube wall; and a spiral part arranged around the outer side of the pipe wall.

In some embodiments of the first aspect the heating means are 2 heating wires arranged in the spiral.

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

a first receiving member; a first connecting member; the first bearing part is connected with the pipe body, one end of the first connecting part is sleeved on the first bearing part, and the other end of the first connecting part is connected with the breathing system.

In some embodiments of the first aspect, the first adapter comprises:

a receiving body; a power connection; the power supply connecting piece penetrates through the through hole of the first connecting piece and is arranged on the side wall of the bearing body, and the bearing body is connected with the pipe body.

In some embodiments of the first aspect, the power connector has a 3-pin plug built into it that partially contacts the heating device.

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

a second receiving member; a second connecting member; the second is accepted the piece with the body is connected, second connecting piece pot head is located the second is accepted the piece, and other end patient respirator connects.

In some embodiments of the first aspect, the first measuring module is disposed on the first receiving member or the first connecting member, and includes a first PCB board, the first PCB board is provided with a first temperature sensor, and the first PCB board is connected to the heating device.

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

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

In some embodiments of the first aspect, the gas property is one or a combination of temperature, humidity, temperature and humidity, 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 over a cycle time.

In a second aspect, the invention provides a breathing system comprising

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

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

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

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 over a cycle time.

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

measuring the air inlet end of the heating pipe: measuring gas characteristics at an air inlet end of a heating tube for a respiratory system; measuring the air outlet end of the heating pipe: measuring gas characteristics at an outlet end of a heating tube for a respiratory system; heating: and acquiring gas characteristic values of an air inlet end and an air outlet end of a heating pipe for the respiratory system, and outputting a control signal to control the heating power of the heating device and/or the humidifier.

In some embodiments of the third aspect, the step of outputting power is specifically: and when the gas characteristic values of the air inlet end and the air outlet end of the heating pipe for the respiratory system are lower than or higher than a preset standard value, a control signal is output to adjust the heating power of the heating device and/or the humidifier.

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

According to the heating pipe for the breathing system, the breathing system and the control method thereof, the first measuring module is arranged at the air inlet end of the heating pipe, the second measuring module is arranged at the air outlet end of the heating pipe, and the gas characteristic measurement of the gas flowing through the heating pipe is completed, so that an external probe is not needed, and the defects caused by the external probe, such as the fact that the external probe is easy to fall off when not correctly installed, the probe is easy to damage and infect, and the risk to a patient is increased, are avoided. And additional wiring connections lead to bulkiness and inconvenient use of the breathing apparatus.

Meanwhile, the heating device sends the measurement data to the controller in the measurement process, so that extra wires are omitted for transmitting the measurement data, and the stability of the system is improved.

Meanwhile, the heating device arranged on the heating pipe heats the gas flowing through the heating pipe, so that the generation of condensed water is prevented, and a plurality of potential safety hazards caused by the condensed water are reduced.

Simultaneously, based on the gas characteristic data that the measuring module of heating pipe air inlet end and air outlet end measured, the humidifying power through controller control humidifier and heating device's the power that generates heat to better prevent the comdenstion water and carry better gas and give the patient, increase the patient and breathe the comfort.

Drawings

Fig. 1 is a schematic view of a respiratory system according to the present invention.

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

Fig. 3 is a cross-sectional view of a heating tube for a respiratory 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 Description

The invention provides a heating pipe for a respiratory system, the respiratory system and a control method thereof, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 1 is a schematic diagram of a respiratory system of the present invention, which is used with a heating tube, and includes a respiratory circuit and a humidifier 20.

Gas is delivered in a breathing circuit. Gas is delivered from the gas supply 10 to the humidifier 20, the humidifier 20 humidifies the gas, the humidified gas enters the heating tube 30 from the gas inlet end 31, is heated and delivered to the gas outlet end 32, and is interfaced with the patient interface, and the patient receives the heated and humidified gas through the patient interface.

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

Humidifier 20 includes a humidification chamber 21 having a volume of liquid within humidification chamber 21. in some embodiments, humidification chamber 21 is removable from humidifier 20 for easy sterilization or placement. Humidification chamber 21 is provided with a gases inlet and outlet, and a gases inlet end 31 of heating tube 30 is configured to connect to the outlet on humidification chamber 21, and a gases outlet end 32 is configured to connect to a patient via a patient interface, in some embodiments, a patient end of an inspiratory conduit is configured to connect directly to a patient interface, including but not limited to a tube cover, Y-fitting, mask, face mask, nasal mask, cannula.

In some embodiments, the breathing circuit further comprises an exhalation conduit through which gas exhaled by the patient is returned to the gas supply 10.

Humidifier 20 also includes a heater plate 22, and humidification chamber 21 is in direct contact with heater plate 22 to heat the liquid in humidification chamber 21 by thermal conduction.

The respiratory system may also include a controller (not shown) that may be located on the humidifier 20, in this embodiment one or more controllers are located on the humidifier base 23. In some embodiments, the humidifier base 23 further includes one or more memories 23A or other suitable storage components (not shown), and in some embodiments, the humidifier base 23 further includes a control panel 23B, and the control 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 may be used to display the gas characteristic data measured by the humidifier 20 or to adjust the preset gas characteristic parameters by entering or operating a joystick on the display screen.

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

Referring to fig. 2 and fig. 3 together, fig. 2 is an exploded view of a heating tube for a respiratory system according to the present invention. Fig. 3 is a cross-sectional view of a heating tube for a respiratory system according to the present invention. Fig. 2 and 3 are general structural views of a heating tube 30 for a respiratory system according to a preferred embodiment of the present invention, the heating tube 30 including a tube body 100; a first coupling member 200, the first coupling member 200 being coupled to one end of the pipe body 100; a second joint 300, the second joint 300 being connected to the other end of the pipe body 100; a first measuring module 201, disposed on the first joint 200, for measuring the gas characteristics at the gas inlet end 31 of the pipe body 100; a second measuring module 301, disposed on the second joint 300, for measuring the gas characteristics at the gas outlet 32 of the pipe body 100; the heating device 400 is disposed between the first measurement module 201 and the second measurement module 301, electrically connected to the first measurement module 201 and the second measurement module 301, and configured to transmit signals and heat the gas flowing through the tube 100.

Referring to fig. 1-3, a heating tube 30 according to a preferred embodiment of the present invention is configured such that an inlet end 31 is connected to an outlet of a humidifier 20 via a first joint 200, an outlet end 32 is connected to a patient interface via a second joint 300, and gases generated by a gases supply device 10 enter a humidification chamber 21 via an inlet of the humidification chamber 21, are humidified in the humidification chamber 21, pass through an outlet of the humidification chamber 21, flow through the heating tube 30, and are delivered to a patient via the patient interface.

In some embodiments, the heating tube 30 is extruded from one or more polymers, preferably the heating tube 30 is flexible in its entirety, preferred polymers include Linear Low Density Polyethylene (LLDPE), Low Density Polyethylene (LDPE), polypropylene (PP), polyolefin plastomers (POP), Ethylene Vinyl Acetate (EVA), plasticized polyvinyl chloride (PVC), or blends of two or more of these materials.

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

Further, the pipe body 100 includes a pipe wall 110 and a spiral part 120 surrounding the pipe wall 110, and in some embodiments, the pipe wall 110 is transparent and visible, so that a user can observe the condensed water condition in the heating pipe 30.

The heating pipe 30 includes a first measuring module 201, and the first measuring module 201 is disposed on the first joining member 200 and is used for measuring the gas characteristics at the gas inlet end 31 of the heating pipe 30.

The heating pipe 30 comprises a second measuring module 301, and the second measuring module 301 is disposed on the second joining member 300 and is used for measuring the gas characteristics at the gas outlet 32 of the heating pipe 30.

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

The heating pipe 30 further comprises a heating device 400, and the heating device 400 can be disposed at 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 2 spirally wound heating wires, respectively a first heating wire 410 and a second heating wire 420, which are accommodated 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 to the first measurement module 201 and the second measurement module 301. The heating device 400 may be controlled by a controller in the respiratory 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 to adjust the heating power of the heating device 400. In some embodiments, the controller includes a power source configured to provide power to the heating device 400. For example, the controller may control the heating power of the heating device 400 by delivering varying power, current, voltage, or a combination thereof to the heating device 400.

In this embodiment, the first and

second heating wires

410, 420 of the heating device 400 may be used to transmit signals to and from a controller.

When the gas characteristic measuring device works specifically, the controller outputs a control signal to control the first measuring module 201 and the second measuring module 301 to measure the gas characteristics, the heating wire has a wire function between the first measuring module 201 and the second measuring module 301, and is used for transmitting the gas characteristic data measured by the first measuring module 201 and the second measuring module 301 to the controller; when the controller outputs a control signal to control the heating device 400 to heat, the heating wire generates heat to heat the gas flowing through the heating pipe 30, thereby preventing the generation of condensed water. The first measuring module 201, the second measuring module 301 and the heating device 400 are controlled by the controller to measure and heat in a periodic time, and the measurement and the heating can be completed without an external probe or other circuits, so that the defects caused by the external probe, such as easy falling off of incorrect installation, easy damage and infection of the probe and increased risk to patients, are avoided. Meanwhile, the system is simplified, and the system is convenient to install or move. Meanwhile, the heating wire serves as a lead in the measuring process and transmits measuring data, so that an additional lead is omitted, and the stability of the system is improved.

The first joint 200 includes a first receiving member 210 and a first connecting member 220, the first receiving member 210 is connected to the tube 100, one end of the first connecting member 220 is sleeved on the first receiving member 210, and the other end is connected to the hose, the patient connector or the humidifier 20, in this embodiment, the other end is connected to the outlet of the humidification chamber 21.

Further, the first receiving member 210 includes a receiving body 211 and a power connector 212, the power connector 212 passes through the through hole of the first connector 220 and is disposed on the sidewall of the receiving body 211, and the receiving body 211 is connected to the tube 100. In some embodiments, the receiving body 211 is a hollow tube integrally formed, and in some embodiments, the receiving body 211 may include two halves, including but not limited to a hollow tube formed by a snap-fit formation. A power connection 212 configured to connect directly or indirectly to a power source is provided on a side wall of the carrier body.

Further, the power connector 212 has a 3-pin plug 212A partially in contact with the heating device 400. In operation, the power connection 212 is connected directly to the humidifier 20, and in some embodiments, the power connection 212 is connected to the humidifier 20 via a data line. The respiratory system applies a 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 joint 300 includes a second receiving member 310 and a second connecting member 320, the second receiving member 310 is connected to the tube 100, one end of the second connecting member 320 is sleeved on the second receiving member 310, and the other end is connected to a hose, a patient connector or a humidifier 20, in this embodiment, the other end is connected to a patient interface.

Further, the protrusions 500 for providing friction force are provided on the outer surfaces of the first connector 220 and the second connector 320, so that the installation and removal by a user can be facilitated.

Furthermore, the shape of the protrusion 500 is an ellipse, and a plurality of strip-shaped lines for providing friction are arranged on the protrusion 500.

According to the heating tube 30 for the respiratory system disclosed by the invention, the first measuring module 201 and the second measuring module 301 are respectively arranged at the air inlet end 31 and the air outlet end 32 of the heating tube 30 so as to measure the gas characteristics at different positions in the tube body 100, and the controller receives the gas characteristic data and adjusts the heating power of the humidifier 20 and/or the heating device 400 through the control signal, so that the accuracy of output control is improved.

In an embodiment of the invention, the first measuring module 201 is disposed on the first receiving member 210 or the first connecting member 220, and includes a first PCB 201A, the first PCB 201A is disposed with a first temperature sensor 201B, and the first PCB 201A is connected to the heating device 400.

The second measuring module 301 is disposed on the second receiving member 310 or the second connecting member 320, and includes a second PCB 301A, the second PCB 301A is disposed thereon with a second temperature sensor 301B and a diode 301C, and the second PCB 301A is connected to the heating device 400.

Referring to fig. 4, fig. 4 is a circuit diagram of embodiment 1 of the present invention. A part of the pins of the 3-pin plug 212A is in contact with the heating apparatus 400, in this embodiment, a pin a1 of the 3 pins a1, a2 and a3 is connected to one end of the first heating wire 410 of the heating apparatus 400, a pin a2 is connected to one end of the second heating wire 420 of the heating apparatus 400, and a pin a3 is connected to the first temperature sensor 201B through a lead wire. The other ends of the first and

second heater wires

410 and 420 are connected in series with the second temperature sensor 301B through the second PCB 301A, and the diode 301C is connected in parallel with the second temperature sensor.

In operation, the controller of the respiratory system is connected to the 3 pins through a switch (not shown), and applies a voltage to the first measuring module 201, the second measuring module 301, and the heating device 400.

In specific work, when the controller applies the first detection voltage p1 to the pin a3, the first measurement module 201 determines the gas temperature at the gas inlet end 31 of the heating tube 30; when the controller applies a 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 heater 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 100.

The controller can control the first measuring module 201, the second measuring module 301 and the heating device 400 to measure and heat in sequence and duration according to preset logic in each time period, and the sequence is circulated. In some embodiments, the controller may control the first measurement module 201 to measure first, the second measurement module 301 to measure second, and the heating device 400 to heat last; in some embodiments, the controller may also control the first measurement module 201 to measure preferentially, the second heating device 400 to heat, and the second measurement module 301 to measure preferentially.

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

In another embodiment of the invention, the first measuring module 201 is disposed on the first receiving member 210 or the first connecting member 220, and includes a first PCB 201A, the first PCB 201A is disposed thereon with a first temperature sensor 201B, and the first PCB 201A is connected to the heating device 400.

The second measuring module 301 is disposed on the second receiving member 310 or the second connecting member 320, and includes a second PCB 301A, and the second PCB 301A is provided with a digital sensor 301D for detecting one or more of temperature, humidity, or pressure, and an MCU control chip 600.

Referring to fig. 5, fig. 5 is a circuit diagram of embodiment 2 of the present invention. A part of the pins of the 3-pin plug 212A is in contact with the heating apparatus 400, in this embodiment, a pin a3 of the 3 pins a1, a2 and a3 is connected to one end of the first heating wire 410 of the heating apparatus 400, a pin a2 is connected to one end of the second heating wire 420 of the heating apparatus 400, and a pin a1 is connected to the first temperature sensor 201B through a lead wire. MCU control chip 600 passes through the pin and is connected with digital sensor 301D, MCU control chip 600 and step-down voltage and a plurality of electric capacity parallel connection, and step-down voltage is used for reducing the voltage of input to supply MCU control chip 600 work, a plurality of electric capacities are used for filtering and electric quantity storage, and for MCU lasts the power supply. The first and

second heating wires

410 and 420 are connected in series with the MCU control chip 600.

Specifically, during operation, 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 a first detection voltage p1 to the pin a1, the first temperature sensor 201B determines the gas temperature at the gas inlet end 31 of the heating tube 30; when the controller applies heating voltage p2 to the pin a2, the switch S1 is turned on, the switch S2 is turned off, the MCU control chip 600 collects and stores the characteristic data of the gas at the gas outlet 32, the MOS transistor Q1 is turned on, and the heating device 400 heats the gas flowing through the heating tube 30; when the controller applies the second detection voltage p3 to the pin a2, 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 may control the first measuring module 201, the second measuring module 301, and the heating apparatus 400 and/or the humidifier 20 to perform the measurement and the sequence of the heating power according to a preset logic in each time period, and perform the measurement and the sequence cyclically.

In this embodiment, the digital sensor 301D on the second PCB 301A may be a digital sensor 301D for measuring one or a combination of temperature, humidity, or pressure, for example, one or a combination of a digital temperature sensor, a digital temperature and humidity sensor, a pressure sensor, and a temperature sensor.

By the above control method, the heating device 400 is used for transmitting signals, and at the same time, the first measuring module 201 and the second measuring module 301 respectively measure the temperature of the air inlet end 31 of the heating pipe 30 and the air characteristics of the air outlet end 32, and control the heating power of the heating device 400 and/or the humidifier 20 according to the air characteristic information, so as to comprehensively monitor and adjust the air characteristics of the breathing air, and enable the patient to breathe the air with the best comfort.

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

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

and a controller which acquires the gas characteristic values of the first and

second measurement modules

201 and 301 and outputs a control signal to control the heating power of the heating apparatus 400 and/or the humidifier 20 based on the gas characteristic values.

During specific operation, the gas supply device 10 generates respiratory gas to enter 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 damp-heat gas flows into the patient interface through the heating pipe 30 to enter 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 may control the first measuring module 201, the second measuring module 301, the heating device 400 and/or the humidifier 20 to measure the sequence and duration of the heating power according to a preset logic in each time period, and to perform the measurement and the heating power in a cyclic sequence.

The invention also provides a control method of the respiratory system, which comprises the following steps:

measuring the air inlet end of the heating pipe: measuring gas characteristics at an air inlet end of a heating tube for a respiratory system;

measuring the air outlet end of the heating pipe: measuring gas characteristics at an outlet end of a heating tube for a respiratory system;

and power output step: and acquiring gas characteristic values of an air inlet end and an air outlet end of a heating pipe for the respiratory system, and outputting a control signal to control the output power of the heating device and/or the humidifier.

The measuring steps of the air inlet end of the heating pipe are as follows: the first measurement module measures the gas characteristics of the air inlet end of a heating pipe for the respiratory system and sends the measured gas characteristic data of the air inlet end to the controller;

the measuring steps of the air outlet end of the heating pipe are as follows: the second measuring module detects the gas characteristics of the gas outlet end of the heating pipe for the breathing system and sends the measured gas characteristic data of the gas outlet end to the controller.

The step of outputting power specifically comprises: when the gas characteristic values of the air inlet end and the air outlet end of the heating pipe for the respiratory system are larger than or smaller than a preset standard value, a control signal is output to adjust the output power of the heating device and/or the humidifier.

Further, the step of measuring the gas inlet end of the heating pipe, the step of measuring the gas outlet end of the heating pipe and the step of outputting power are circularly performed in the period time.

In summary, the heating tube for a respiratory system, the respiratory system and the control method thereof provided by the present invention include: 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.

It should be understood that the technical solutions and concepts of the present invention may be equally replaced or changed by those skilled in the art, and all such changes or substitutions should fall within the protection scope of the appended claims.

Claims

1. A heating tube for a respiratory system, comprising:

a pipe body;

the first joint is connected with one end of the pipe body;

a second joint connected to the other end of the pipe body;

the first measuring module is arranged on the first joint and used for measuring the gas characteristics at the gas inlet end of the pipe body;

the second measuring module is arranged on the second joint and used for measuring the gas characteristics at the gas outlet end of the pipe body;

the heating device is arranged between the first measuring module and the second measuring module, is electrically connected with the first measuring module and the second measuring module, is used for transmitting signals and heating gas in the pipe body, comprises 2 heating wires which are respectively a first heating wire and a second heating wire, and has a wire function between the first measuring module and the second measuring module and is used for transmitting gas characteristic data measured by the first measuring module and the second measuring module to the controller;

the first engaging member comprises a first receiving member comprising a power connector comprising a three pin plug partially in contact with the heating device;

the first measuring module comprises a first PCB, a first temperature sensor is arranged on the first PCB, and the first PCB is connected with the heating device;

the second measuring module comprises a second PCB, a second temperature sensor and a diode are arranged on the second PCB, and the second PCB is connected with the heating device;

a pin a1 of 3 pins a1, a2 and a3 in the three-pin plug is connected with one end of a first heating wire of the heating device, a pin a2 is connected with one end of a second heating wire of the heating device, and a pin a3 is connected with a first temperature sensor through a lead;

the other ends of the first heating wire and the second heating wire are connected with a second temperature sensor in series through a second PCB, and the diode is connected with the second temperature sensor in parallel.

2. The heating tube for a respiratory system according to claim 1, wherein the tube body comprises:

a tube wall;

and a spiral part arranged around the outer side of the pipe wall.

3. The heating tube for a respiratory system according to claim 2, characterized in that 2 heating wires are provided in the spiral.

4. The heating tube for a respiratory system of claim 1, wherein the first engagement member further comprises:

a first connecting member;

the first bearing part is connected with the pipe body, one end of the first connecting part is sleeved on the first bearing part, and the other end of the first connecting part is connected with the breathing system.

5. The heating tube for a respiratory system according to claim 4, wherein the first acceptor further comprises:

a receiving body;

the power supply connecting piece penetrates through the through hole of the first connecting piece and is arranged on the side wall of the bearing body, and the bearing body is connected with the pipe body.

6. The heating tube for a respiratory system according to claim 1, wherein the second engagement member comprises:

a second receiving member;

a second connecting member;

the second bearing piece is connected with the pipe body, one end of the second connecting piece is sleeved on the second bearing piece, and the other end of the second connecting piece is connected with a hose or a machine or a patient interface.

7. The heating tube for a respiratory system of claim 6, wherein the second measuring module is disposed on the second receiving member or the second connecting member, and comprises a second PCB, the second PCB 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 is connected to the heating device.

8. The heating tube for a respiratory system according to claim 1, wherein the gas property is one or a combination of temperature, humidity, temperature and humidity, pressure of the gas.

9. The heating tube for a respiratory system according to claim 1, characterized in that the first measuring module, the second measuring module, the heating device measure and heat over a cycle time.

10. A respiratory system comprising a humidifier, characterized in that: also comprises

A gas supply for generating a gas supply to a patient;

the heating tube of any one of claims 1 to 9;

11. The respiratory system of claim 10, wherein the controller outputs a control signal to adjust the heating power of the heating device and/or humidifier when the gas property value is lower or higher than a predetermined standard value.

12. The respiratory system of claim 10, wherein 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 over a cycle time.