Breathing heating line, breathing treatment device and supply air temperature preservation control method

Abstract

The application relates to the field of medical devices, and specifically provides a breathing heating pipeline, a breathing treatment device and a gas supply temperature preservation control method. The breathing heating pipeline comprises a hollow membrane tube and a heating rib which are arranged in an alternating spiral extension mode, the hollow membrane tube is used for elastic deformation, and the heating rib is used for heat preservation and heating of gas in the breathing heating pipeline; the heating rib comprises a heating rib body and a protective film layer wrapped on the heating rib body, and the protective film layer and the hollow membrane tube are both arranged as biocompatible films. By arranging the protective film layer and the hollow membrane tube as biocompatible films, the manufacturing cost of the breathing heating pipeline is reduced; the materials of the connection parts of the protective film layer and the hollow membrane tube are both biocompatible films, the adhesion and fusion force of the two is high, the bonding force of the connection parts can be increased, the connection strength of the protective film layer and the hollow membrane tube is improved, and finally the structural strength of the breathing heating pipeline is improved.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a breathing heating tubing, a breathing therapy device, and a method for controlling the temperature of the supplied air. Background Technology

[0002] Respiratory therapy equipment (ventilators, anesthesia machines, or oxygen supply machines, etc.) is usually equipped with gas supply lines to ensure stable gas transmission. At the same time, in order to improve user comfort, gas temperature needs to be controlled, and for ease of use, the gas supply lines also need to have a certain degree of bending and stretching deformation capacity.

[0003] To achieve temperature control and deformation capabilities, existing technologies typically configure the gas supply pipeline as a spirally spaced hollow membrane tube and heating ribs. The inner surfaces of the hollow membrane tube and heating ribs form the sealed inner wall of the gas supply pipeline. This requires that both the heating ribs and the hollow membrane tubes be made of materials with good biocompatibility, resulting in high costs for the gas supply pipeline. Simultaneously, the heating ribs also need to provide insulation, while the hollow membrane tubes need to meet deformation requirements. The thin walls of the hollow tubes result in significant heat dissipation at the hollow tubes. Furthermore, the different materials used for the heating ribs and the hollow membrane tubes ultimately lead to poor connection strength at the joint between them.

[0004] Therefore, existing technologies have defects and shortcomings, and need further improvement and development. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a respiratory heating tubing and a respiratory therapy device, which aims to solve the problems of high cost and weak structural strength of the respiratory heating tubing in the prior art.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: a respiratory heating pipeline for respiratory therapy equipment, the respiratory heating pipeline comprising: a hollow membrane tube and a heating rib arranged in alternating spiral extensions, the hollow membrane tube being used for elastic deformation, and the heating rib being used for heat preservation and heating of the gas in the respiratory heating pipeline; the heating rib comprising a heating rib body and a protective membrane layer covering the heating rib body, both the protective membrane layer and the hollow membrane tube being configured as biocompatible membranes.

[0007] Optionally, the heating rib body includes:

[0008] A thermal insulation body, wherein the protective film layer covers the thermal insulation body;

[0009] A plurality of heating wires are spaced apart within the insulation body;

[0010] A plurality of signal lines are spaced apart in the insulation body and are arranged in a one-to-one correspondence with a plurality of heating wires.

[0011] Optionally, the insulation body includes a plurality of insulation sub-body connected in sequence, and the protective film layer covers the insulation sub-body.

[0012] Optionally, each of the aforementioned heat-insulating sub-body is provided with a heating wire.

[0013] Optionally, the radial cross-section of some of the insulation sub-body is set as a triangle, trapezoid, or semicircle.

[0014] Optionally, the protective membrane layer is formed by extending the hollow membrane tube.

[0015] Optionally, the hollow membrane tube is provided with a hollow cavity for introducing a constant temperature medium.

[0016] Optionally, the hollow membrane tube and the heating rib are flush with the inner surface facing the axis, and both are set as planes.

[0017] Another technical solution adopted by this application to solve the technical problem is as follows: a respiratory therapy device, the respiratory therapy device including the respiratory heating pipeline as described above, and a temperature sensor for detecting the gas temperature in the respiratory heating pipeline.

[0018] Another technical solution adopted by this application to solve the technical problem is as follows: A method for controlling the supply temperature of a respiratory therapy device as described above, comprising:

[0019] Obtain the preset gas temperature threshold;

[0020] Monitor the real-time temperature of the breathing heating tubing;

[0021] When the real-time gas temperature value is less than the gas supply temperature threshold, the heating rib is controlled to heat the gas in the breathing heating pipeline until the real-time gas temperature value reaches the gas supply temperature threshold.

[0022] Beneficial effects:

[0023] This application provides a respiratory heating pipeline, a respiratory therapy device, and a method for controlling the temperature of the supplied air. The respiratory heating pipeline is provided with a hollow membrane tube and a heating rib. By covering the heating rib with a protective film layer and making both the protective film layer and the hollow membrane tube biocompatible membranes, it is not necessary to make the heating rib body itself a biocompatible material, which increases the selectivity of the heating rib body material and reduces the manufacturing cost of the respiratory heating pipeline. At the same time, the heating rib is connected to the hollow membrane tube through the protective film layer. The material at the connection between the protective film layer and the hollow membrane tube is a biocompatible membrane, which has high adhesion and fusion force, which can increase the bonding force at the connection and improve the connection strength between the protective film layer and the hollow membrane tube, ultimately improving the structural strength of the respiratory heating pipeline. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the breathing heating pipeline provided in this application;

[0025] Figure 2 This is a top view of the breathing heating tubing provided in this application;

[0026] Figure 3 It is provided in this application Figure 2 A cross-sectional view along the I-I direction;

[0027] Figure 4 It is provided in this application Figure 3 Enlarged view of point A;

[0028] Figure 5 It is provided in this application Figure 3 A schematic diagram of a deformed structure;

[0029] Figure 6 It is provided in this application Figure 5 Enlarged view of point B;

[0030] Figure 7 It is provided in this application Figure 3 Another deformed structural schematic diagram;

[0031] Figure 8 It is provided in this application Figure 7 A magnified view of point C;

[0032] Figure 9 This is a partially enlarged schematic diagram of the breathing heating tubing provided in this application;

[0033] Figure 10 This is a schematic flowchart of the gas supply temperature insulation control method provided in this application;

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Breathing heating tubing; 11. Hollow membrane tubing; 12. Heating rib; 111. Hollow cavity; 121. Heating rib body; 122. Protective membrane layer; 123. Insulation body; 124. Heating wire; 125. Insulation sub-body; 126. Signal line. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0037] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In respiratory therapy, gases are typically delivered into the patient's respiratory tract at room temperature or low temperature, which may lead to adverse effects such as airway mucosal damage, dehydration, and a feeling of coldness during breathing. To improve user comfort, gas temperature control is necessary. Furthermore, for ease of use, the gas supply tubing needs to have a certain degree of flexibility and deformation capability. Current technologies typically use a spirally wound and bonded structure of heating ribs and hollow membrane tubes to achieve temperature control and deformation capability. Since both the heating ribs and the hollow membrane tube need to come into contact with the breathing gas, both require biocompatibility. The heating ribs, in addition to biocompatibility, also need to possess high thermal insulation and flexibility, but such biocompatible materials are expensive. Therefore, current technologies use heating ribs and deformation ribs made of different materials bonded together to construct the respiratory heating tubing. However, bonding between different materials is difficult and results in low bonding strength, leading to low tensile strength and poor deformation capability of the respiratory heating tubing.

[0040] Please refer to the following: Figures 1 to 4The first embodiment of this application provides a respiratory heating conduit 10 for use in a respiratory therapy device, used to transmit gas from the respiratory therapy device to the patient end; the respiratory heating conduit 10 includes a hollow membrane tube 11 and a heating rib 12, the hollow membrane tube 11 and the heating rib 12 are alternately spirally extended, thereby forming a respiratory heating conduit 10 with an outer spiral and an inner hollow structure; it can be understood that if the respiratory heating tube is cut along the axial direction, the heating rib 12 and the hollow membrane tube 11 can be seen alternately arranged on the cut surface, and both the heating rib 12 and the hollow membrane tube 11 extend spirally like a spring or a thread; the hollow membrane tube 11 is used for elastic deformation, that is, the hollow The membrane tube 11 can undergo elastic deformation, meaning that the bending or stretching of the respiratory heating pipeline 10 is achieved through the hollow membrane tube 11. The hollow membrane tube 11, through elastic deformation, can bend, contract, or extend the respiratory heating pipeline 10. The heating rib 12 is used to heat and maintain the temperature of the gas in the respiratory heating pipeline 10. That is, the heating rib 12 generates heat, and when the gas in the respiratory heating pipeline 10 comes into contact with the heating rib 12, the heat generated by the heating rib 12 is transferred to the gas in the respiratory heating pipeline 10 through contact, raising the temperature of the gas in the respiratory heating pipeline 10 and achieving the effect of heat preservation and heating, meeting the temperature requirements for treatment. 12 includes a heating rib body 121 and a protective film layer 122, the protective film layer 122 covering the heating rib body 121; it can be understood that the heating rib 12 is composed of the heating rib body 121 and the protective film layer 122 covering the heating rib body 121; wherein, both the protective film layer 122 and the hollow membrane tube 11 are set as biocompatible membranes, so that the heating rib 12 and the hollow membrane tube 11 can interact well with the gas in the breathing heating pipeline 10, and will not cause problems such as inflammation, immune response, or infection in the user; specifically, both the protective film layer 122 and the hollow membrane tube 11 are set as biocompatible membranes, only the protective film layer 122 needs to be set as The use of biocompatible materials reduces manufacturing costs by eliminating the need to use biocompatible materials for the entire heating rib 12. Furthermore, the protective membrane layer 122 and the hollow membrane tube 11 are made of the same biocompatible material, increasing the adhesion and fusion force at the connection between the protective membrane layer 122 and the hollow membrane tube 11, thereby increasing the bonding strength between them and improving the connection strength. This application increases the selectivity of the heating rib body material by using biocompatible membranes for both the protective membrane layer 122 and the hollow membrane tube 11, reducing the manufacturing cost of the breathing heating pipe 10 and improving the connection strength between the protective membrane layer 122 and the hollow membrane tube 11.

[0041] Please refer to the following: Figure 4 , Figure 6 and Figure 8In some embodiments, the heating element body 121 includes an insulation body 123, a plurality of heating wires 124, and a plurality of signal lines 126. The protective film layer 122 covers the insulation body 123, while the plurality of heating wires 124 are spaced apart within the insulation body 123. The plurality of signal lines 126 are also spaced apart within the insulation body, with each signal line 126 corresponding to one of the heating wires. Specifically, the heating wires 124 within the insulation body 123 generate heat and transfer it to the insulation body 123. The spaced-apart arrangement of the heating wires 124 prevents them from contacting each other, thus preventing short circuits or overheating. The signal lines 126 are spaced apart within the insulation body, adjacent to their corresponding heating wires, and are used to transmit temperature signals. The insulation body 123, as the main part of the heating rib 12, has good heat preservation performance and can effectively maintain the temperature stability of the gas. At the same time, several heating wires 124 are arranged at intervals in the insulation body 123, which can uniformly provide heat and further enhance the heat preservation effect. A protective film layer 122 made of biocompatible material is wrapped on the insulation body 123. The protective film layer 122 is in contact with the gas in the breathing heating pipe 10. The protective film layer 122 can interact well with biological tissues or body fluids and will not cause inflammation, immune response, infection or other problems to the user. The heat generated by the heating wires 124 is transferred to the protective film layer 122 through the insulation body 123, and the protective film layer 122 then transfers the heat to the gas in the breathing heating pipe 10, continuously heating and preserving the gas in the breathing heating pipe 10.

[0042] Please see Figure 9In some embodiments, the insulation body 123 includes several insulation sub-bodies 125 connected in sequence, and the protective film layer 122 covers the insulation sub-bodies 125. Specifically, the insulation body 123 is the main component of the heating rib body 121 and is used to provide insulation function. In order to enhance the insulation effect and flexibility, the insulation body 123 is divided into several insulation sub-bodies 125 and connected in sequence to achieve better heat retention and distribution, and increase the proportion of heating functional components in the breathing heating pipeline 10, ensuring that the gas maintains a stable temperature throughout the heating rib 12. At the same time, the protective film layer 122 covers each insulation sub-bodies 125. The protective film layer 122 is made of the same biocompatible membrane as the hollow membrane tube 11, which has good adhesion and fusion force, and can effectively protect the insulation sub-bodies 125 and heating wire 124 from the influence of the external environment, and enhance the strength of the connection, which not only enhances the insulation effect, but also improves the durability and connection strength of the pipeline. It should be noted that no protective film layer is provided between adjacent insulation sub-body 125, that is, the insulation sub-body 125 is directly connected to the insulation sub-body 125, and the protective film layer is covered on the outer surface formed by several insulation sub-body 125, thereby reducing the amount of protective film layer used and further reducing the manufacturing cost of the breathing heating pipe 10.

[0043] Please see Figure 9 In some embodiments, heating wires 124 are provided in each of the plurality of insulation sub-body 125; specifically, each insulation sub-body 125 is equipped with heating wires 124, and these heating wires 124 are spaced apart in the insulation sub-body 125; by installing heating wires 124 in each insulation sub-body 125, uniform heating of the gas in the respiratory heating pipeline 10 can be achieved, ensuring that the gas maintains a stable temperature throughout the pipeline, providing a more comfortable and efficient respiratory therapy experience; by setting heating wires 124 in each insulation sub-body 125, the heat preservation and heating function of the heating rib body 121 is realized; the insulation sub-body 125, as a component of the insulation body 123, undertakes the supporting and fixing function of the insulation wire, and also plays a role in heat conduction and distribution; the spaced arrangement of heating wires 124 can ensure that the gas is uniformly heated throughout the pipeline, so that the respiratory heating pipeline 10 can effectively provide a stable heat preservation and heating function.

[0044] Please refer to the following: Figures 3 to 9In some embodiments, the radial cross-section of several insulation sub-body 125 is set as triangular, trapezoidal, or semi-circular. Specifically, the cross-sectional shape of each insulation sub-body 125 in the radial direction can be triangular, trapezoidal, or semi-circular. When the radial cross-section of the insulation sub-body 125 is triangular, it can provide a larger contact area, effectively increasing the heat conduction area between it and the gas, thereby improving the heating efficiency. When the radial cross-section of the insulation sub-body 125 is trapezoidal, it can provide more space to accommodate the heating wire 124 and can increase the number or diameter of the heating wire 124, further improving the heating power and heat preservation effect of the heating rib 12. When the radial cross-section of the insulation sub-body 125 is semi-circular, it has a smaller radius of curvature, which can better adapt to the bending deformation requirements of the pipeline and provide a good temperature distribution. The radial cross-sectional shape of several insulation sub-body 125, such as triangular, trapezoidal, or semi-circular, can be selected according to the heating effect, heat preservation performance, and pipeline flexibility requirements.

[0045] In some embodiments, the protective membrane layer 122 is formed by extending the hollow membrane tube 11; specifically, the protective membrane layer 122 is formed by extending a biocompatible membrane of the same material as the hollow membrane tube 11. This means that the protective membrane layer 122 and the hollow membrane tube 11 have the same chemical composition and biocompatibility, so that the heating rib 12 is seamlessly connected to or integrally set with the hollow membrane tube 11, which improves the sealing and durability of the entire pipeline, reduces the manufacturing cost, and improves the connection strength, sealing and biocompatibility to ensure the stability and reliability of the pipeline.

[0046] Please refer to the following: Figure 4 , Figure 6 and Figure 8 In some embodiments, the hollow membrane tube 11 has a hollow cavity 111 for introducing a constant temperature medium. The hollow membrane tube 11 is an important component of the pipeline, and a hollow cavity 111 is provided inside it. The constant temperature medium can be filled into the hollow cavity 111, including but not limited to water and gas. By introducing the constant temperature medium into the hollow cavity 111, the heat of the gas in the respiratory heating pipeline 10 is not easily diffused to the outside of the respiratory heating pipeline 10, thereby maintaining a stable gas temperature in the respiratory heating pipeline. At the same time, it enables the respiratory heating pipeline 10 to be used in various temperature environments, and can maintain a suitable temperature in various temperature environments to meet the needs of respiratory therapy.

[0047] Please refer to the following: Figure 3 , Figure 5 and Figure 7In some embodiments, the hollow membrane tube 11 and the heating rib 12 are flush with the inner surfaces facing the axis, and both are designed as planes. Specifically, the inner surface of the hollow membrane tube 11 is flush with the inner surface of the heating rib 12, forming an adjacent plane, which allows the hollow membrane tube 11 and the heating rib 12 to be better and more tightly connected, improving the overall stability and sealing of the pipeline. At the same time, since the hollow membrane tube 11 and the heating rib 12 are both designed as planes, it means that their shapes have no obvious protrusions or depressions, making the inner surface of the breathing heating pipeline 10 smoother and more uniform, reducing interference and resistance to airflow, and facilitating cleaning and disinfection operations. The design of the hollow membrane tube 11 and the heating rib 12 being flush with the inner surfaces facing the axis and both being designed as planes improves the stability, sealing and airflow of the breathing heating pipeline 10, and facilitates cleaning and disinfection.

[0048] The second embodiment of this application also provides a respiratory therapy device, which includes the respiratory heating pipeline 10 and temperature sensor provided in the first embodiment of this application. The temperature sensor is used to detect the gas temperature in the respiratory heating pipeline 10. Specifically, the temperature sensor can be connected to several signal lines 126. It can be seen that the respiratory therapy device provided in this embodiment has the advantages of low cost and high tensile strength of the respiratory heating pipeline 10.

[0049] Please see Figure 10 The third embodiment of this application also provides a gas supply temperature insulation control method, which is based on the respiratory therapy device provided in the second embodiment of this application. The main purpose is to keep the gas supplied in the respiratory heating pipeline of the respiratory therapy device warm. Specifically, the gas supply temperature insulation control method includes:

[0050] Step S10: Obtain the preset gas temperature threshold;

[0051] When supplying gas through respiratory therapy equipment, different usage needs have different application requirements for the temperature of the supplied gas. Therefore, in different usage scenarios, the gas temperature threshold is obtained in advance, that is, the target temperature value of the gas to be controlled is obtained, which provides a benchmark reference for the temperature control of the supplied gas.

[0052] Step S20: Detect the real-time temperature value of the breathing heating tubing;

[0053] After obtaining the preset temperature threshold, the temperature of the gas supplied by the breathing heating pipeline can be obtained by detecting the real-time temperature value of the breathing heating pipeline, thus providing real-time data support for achieving gas supply temperature insulation control.

[0054] Step S30: When the real-time temperature value is less than the gas temperature threshold, control the main heating element to heat the gas supply in the breathing heating pipeline until the real-time temperature value reaches the gas temperature threshold.

[0055] After obtaining the preset temperature threshold and the real-time temperature value of the breathing heating tubing, the two values ​​are compared. Normally, the temperature of the gas supplied by the ventilator is lower than the ambient temperature, so the gas in the breathing heating tubing needs to be heated. At the same time, it is usually heated before entering the breathing heating tubing, but it will also exchange heat with the environment while flowing through the breathing heating tubing, causing the gas temperature to drop. That is, when the real-time temperature value is lower than the gas temperature threshold, the heating element is controlled to heat the gas supply in the breathing heating tubing until the real-time temperature value reaches the gas temperature threshold, and then the operation of the main heating element or the auxiliary heating element is stopped, thus completing the temperature control of the gas supply.

[0056] In summary, this application provides a respiratory heating pipeline, a respiratory therapy device, and a method for controlling the temperature of the supplied gas. The respiratory heating pipeline includes a hollow membrane tube and a heating rib arranged in alternating spirals. The hollow membrane tube is used for elastic deformation, and the heating rib is used to heat and maintain the temperature of the gas in the respiratory heating pipeline. The heating rib includes a heating rib body and a protective film layer covering the heating rib body. Both the protective film layer and the hollow membrane tube are biocompatible membranes. The breathing heating circuit is equipped with a hollow membrane tube and a heating rib. By covering the heating rib with a protective membrane layer and making both the protective membrane layer and the hollow membrane tube biocompatible membranes, it is not necessary to make the heating rib body itself a biocompatible material. This increases the selectivity of the heating rib body material and reduces the manufacturing cost of the breathing heating circuit. At the same time, the heating rib is connected to the hollow membrane tube through the protective membrane layer. The material at the connection between the protective membrane layer and the hollow membrane tube is a biocompatible membrane. The two have high adhesion and fusion force, which can increase the bonding force at the connection point and improve the connection strength between the protective membrane layer and the hollow membrane tube, ultimately improving the structural strength of the breathing heating circuit.

[0057] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A respiratory heating tubing for use in a respiratory therapy device, characterized in that, The breathing heating pipeline includes: a hollow membrane tube and a heating rib arranged in alternating spirals. The hollow membrane tube is used for elastic deformation, and the heating rib is used to heat and insulate the gas in the breathing heating pipeline. The heating rib includes a heating rib body and a protective membrane layer covering the heating rib body. Both the protective membrane layer and the hollow membrane tube are biocompatible membranes. The heating element body includes an insulation body, the protective film layer covering the insulation body; a plurality of heating wires, which are spaced apart in the insulation body; and a plurality of signal lines, which are spaced apart in the insulation body and correspond one-to-one with the plurality of heating wires. The insulation body includes a plurality of insulation sub-body connected in sequence, and the protective film layer covers the insulation sub-body; Heating wires are provided in several of the aforementioned heat-insulating sub-body structures; The protective membrane layer is formed by extending the hollow membrane tube; The signal line is disposed adjacent to the corresponding heating wire, and the signal line is used to transmit temperature signals; The protective film layer is not provided between adjacent insulation sub-body, and the protective film layer only covers the outer surface formed by several insulation sub-body together.

2. The breathing heating pipeline according to claim 1, characterized in that, The radial cross-section of some of the heat-insulating sub-body is set as a triangle, trapezoid, or semi-circle.

3. The breathing heating pipeline according to claim 1, characterized in that, The hollow membrane tube is provided with a hollow cavity, which is used to introduce a constant temperature medium.

4. The breathing heating pipeline according to claim 1, characterized in that, The hollow membrane tube and the heating rib are arranged flush with the inner surface facing the axis, and both are set as planes.

5. A respiratory therapy device, characterized in that, It includes a breathing heating line as described in any one of claims 1-4, and a temperature sensor for detecting the temperature of the gas in the breathing heating line.

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