A heated breathing circuit and system

Abstract

The present invention provides a heated breathing circuit, which is used to assist a humidification instrument in heating humidified gas, thereby preventing the formation of condensed water, and at least comprises a heating circuit (1), a temperature sensor assembly (2), and a temperature heating assembly (3), wherein the heating circuit (1) is respectively connected to the temperature sensor assembly (2) and the temperature heating assembly (3), wherein the temperature sensor assembly (2) and the temperature heating assembly (3) are injection molded integral structures and are connected to the heating circuit (1), wherein a spiral heating assembly (11) is provided on the outer circumferential surface of the heating circuit (1) along the length direction, and the temperature heating assembly (3) is electrically connected to the spiral heating assembly (11). The present invention has a simple structure, is easy to use, has good safety, can effectively prevent secondary infection, and has extremely high commercial value.

Description

Technical Field

[0001] The invention belongs to the field of respiratory therapy and relates to a matching accessory for a humidifier or a ventilator. Background Art

[0002] A humidifier or ventilator is an important component of a ventilator. It uses physical heating to provide the appropriate temperature and humidity for the dry air-oxygen mixed gas. Using a respiratory humidifier to heat and humidify the gas of patients treated with a ventilator is an important measure in the treatment process. If the respiratory humidifier fails, it will directly affect the patient's treatment effect. A serious failure will cause harm to the patient. The humidifier and the ventilator need to be used with some supporting components when they are in working condition. For example, in order to ensure the temperature of the exhaust gas, merchants often install a The breathing circuit is used to control the temperature of the air when it is exhaled. Among the existing products of heated breathing circuits, the heated breathing circuits produced by Fisher & Paykel are composed of an inner spiral heating wire placed in a corrugated tube, which is controlled by equipment to ensure the temperature of the gas in the tube. However, such a design has defects. First, the heating wire and sensor placed inside the tube greatly hinder the airflow and affect the flow rate; second, the sensor and the resistance wire are very likely to have leakage and short circuit in the tube with a certain temperature and humidity for a long time; third, the inner wall of the corrugated tube is wrinkled, which is easy to breed bacteria, and secondary infection will occur if the dead corners cannot be cleaned.

[0003] At present, due to the above technical problems, it is easy to bring great inconvenience to patients or users, and the use cannot meet the daily needs of users. The current heated breathing tubes have safety issues such as bacteria, which also greatly troubles merchants and consumers. At present, there is a lack of a technical solution that can solve the above technical problems. That is, in the current existing technology, there is no heated breathing tube and system. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a heated breathing circuit, which is used to assist a humidification instrument in heating humidified gas, thereby preventing the formation of condensed water, and at least comprises a heating circuit, a temperature sensor assembly, and a temperature heating assembly, wherein the heating circuit is respectively connected to the temperature sensor assembly and the temperature heating assembly, wherein:

[0005] The temperature sensor component and the temperature heating component are an integral injection-molded structure and are connected to the heating pipeline, wherein:

[0006] A spiral heating component is arranged on the outer circumferential surface of the heating pipeline along the length direction, and the temperature heating component is electrically connected to the spiral heating component.

[0007] Preferably, it also includes a pipe joint, which is connected to the injection-molded integrated structure formed by the temperature sensor component and the temperature heating component to form a rubber-encapsulated sealing body.

[0008] Preferably, it also includes a machine connector and a stepped pin, wherein the machine connector and the stepped pin are an integral injection-molded structure and are connected to one end of the heating pipeline away from the temperature sensor assembly and the temperature heating assembly.

[0009] Preferably, in the working state, after the machine connector and the stepped pin are connected to the heating pipeline as an integral injection-molded structure, an overmolding process is performed.

[0010] Preferably, it also includes an assembled sealing structure formed by a pipeline machine sealing joint and a pipeline machine sealing joint silicone, and the assembled sealing structure performs pipeline sealing with the machine joint in a working state.

[0011] Preferably, the temperature sensor component and the temperature heating component are arranged at an interval.

[0012] Preferably, the connection method between the integrated structure of the temperature sensor assembly and the temperature heating assembly and the heating pipeline includes at least:

[0013] -welding;

[0014] - Riveting;

[0015] - bonding; or

[0016] -Threaded connection.

[0017] Preferably, the machine connector and the stepped pin are an injection-molded integral structure, and the connection method with the heating pipeline includes at least:

[0018] -welding;

[0019] - Riveting;

[0020] - bonding; or

[0021] -Threaded connection.

[0022] Preferably, the spiral heating component comprises M heat-resistant enameled wires coated with resistance wires, wherein the M heat-resistant enameled wires are wound around the outer wall of the heating pipeline and form a heating circuit with the temperature heating component, and M≥1.

[0023] Preferably, the diameter of the heat-resistant enameled wire is 0.1-0.5 mm.

[0024] Preferably, in the horizontal direction, the spacing distance between the heat-resistant enameled wires of the heating pipeline along the length direction is 3 mm to 4 mm.

[0025] According to another aspect of the present invention, a heated breathing circuit system is provided, which includes a heated breathing circuit and at least a humidifying instrument, wherein the heated breathing circuit is mounted on the humidifying instrument so that the temperature of the heated breathing circuit is controlled by the humidifying instrument.

[0026] The present invention provides a heating breathing circuit and system, which is used to assist a humidification instrument in heating humidified gas, thereby preventing the formation of condensed water, and at least includes a heating circuit, a temperature sensor assembly, and a temperature heating assembly. The heating circuit is connected to the temperature sensor assembly and the temperature heating assembly respectively, and the temperature sensor assembly and the temperature heating assembly are an injection-molded integral structure and connected to the heating circuit. A spiral heating assembly is arranged on the outer circumferential surface of the heating circuit along the length direction, and the temperature heating assembly is electrically connected to the spiral heating assembly. The heating circuit is adjusted by a temperature control system to ensure a certain temperature inside the circuit to reduce the temperature difference between the inside and the outside, thereby reducing the generation of condensed water. At the same time, the present invention prevents the growth of bacteria on the inner wall of the corrugated tube through the heating circuit arranged with an outer spiral, and the interval arrangement between the temperature sensor assembly and the temperature heating assembly will not cause leakage short circuit of the sensor and the resistance wire. The present invention has a simple structure, is easy to use, and has good safety. It can effectively prevent secondary infection and has extremely high commercial value. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 A schematic side perspective view of a heated breathing circuit according to a specific embodiment of the present invention is shown. DETAILED DESCRIPTION

[0029] In order to better illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0030] As a specific embodiment of the present invention, Figure 1 A side perspective view of a heated breathing circuit is shown Figure 1 A heating breathing circuit, those skilled in the art understand that the present invention Figure 1 Only the important components and structures disclosed in the present invention are shown, but there are some other components not disclosed in the present invention. Figure 1 Since it is not the inventive point of the present invention, it is not marked in the figure and is not described, but this does not mean that the present invention does not have these components. At the same time, in order to better describe the present application, the present invention Figure 1 It mainly shows the structural connection under the perspective effect. Figure 1 The right side also uses a structural connection diagram with an explosion effect in order to better illustrate the internal structure of the right side of the heated breathing tube, which will not be elaborated here.

[0031] Those skilled in the art understand that the heated breathing circuit is used to assist the humidification instrument in heating the humidified gas, thereby preventing the formation of condensed water, that is, the heated breathing circuit shown in the present invention is for use in conjunction with the humidification instrument. Furthermore, as a preferred embodiment of the present invention, the heated breathing circuit can be controlled by controlling the humidification instrument, thereby heating the humidified gas, thereby preventing the formation of condensed water.

[0032] Furthermore, the heated breathing circuit at least includes a heating circuit, a temperature sensor assembly, and a temperature heating assembly. Those skilled in the art understand that the heating circuit is used to heat the gas. Figure 1 The heating pipeline can be of straight cylindrical type, and in other embodiments, it can also be of other shapes. The temperature sensor assembly is mainly used to monitor the temperature of the heating pipeline in real time. The temperature sensor assembly is preferably arranged on one side of the heating pipeline. The temperature heating assembly is used to heat the gas passing through the heating pipeline. The setting of the temperature heating assembly is adapted to the temperature sensor assembly and is arranged on the same side of the heating pipeline. Furthermore, the heating pipeline is respectively connected to the temperature sensor assembly and the temperature heating assembly.

[0033] Further, the temperature sensor assembly and the temperature heating assembly are an integral injection molding structure and are connected to the heating pipeline. In such an embodiment, the temperature sensor assembly and the temperature heating assembly are configured as an integral injection molding structure. Figure 1The temperature sensor assembly and the temperature heating assembly are arranged at intervals, that is, although the temperature sensor assembly and the temperature heating assembly are an integral injection-molded structure, they are arranged far away from each other. Specifically, the integral injection-molded structure can be set as a cylinder, but the temperature sensor assembly and the temperature heating assembly are respectively arranged at two end points along the diameter direction of the outer circumference of the cylinder. This arrangement is to ensure that the heating of the heated breathing circuit will not interfere with the temperature detection of the heated breathing circuit. Further, the temperature sensor assembly and the temperature heating assembly are connected to the heating circuit as a whole. Those skilled in the art understand that in the prior art, the heating wire and the sensor are often placed inside the pipeline, which will greatly hinder the airflow and affect the flow rate. Through the structural connection in the present invention, the temperature sensor assembly and the temperature heating assembly are arranged outside the heating pipeline, which can effectively avoid the occurrence of the above situation, thereby increasing the flow rate of gas in the heating pipeline and improving work efficiency.

[0034] Furthermore, a spiral heating component is provided on the outer circumferential surface of the heating pipeline along the length direction, and the temperature heating component is electrically connected to the spiral heating component. Those skilled in the art understand that Figure 1 As shown, the heating pipeline is provided with a spiral heating component, and the spiral heating component is spirally attached to the outer surface of the heating pipeline. In other embodiments, the heating component can also be arranged in other shapes, such as irregular curves, serrations, etc., but as a preferred solution, setting it in a spiral shape can greatly improve the heating efficiency, but this does not mean that only such an attachment form can be used, which will not be elaborated here.

[0035] Furthermore, it also includes a pipe joint, which is connected to the injection-molded integrated structure formed by the temperature sensor component and the temperature heating component to form a rubber-encapsulated seal, such as Figure 1 As shown, the pipe joint is a hollow structure, and the shape of the hollow structure of the pipe joint is adapted to the outer diameter of the heating pipe. In such an embodiment, the pipe joint encloses the injection-molded integrated structure formed by the temperature sensor assembly and the temperature heating assembly, and is sealed by rubber coating. Such a setting makes the heated breathing pipe more practical and comfortable when used, and is not easy to slip when encountering water.

[0036] Furthermore, it also includes a machine connector and a stepped pin. The machine connector and the stepped pin are an integral injection-molded structure and are connected to one end of the heating pipeline away from the temperature sensor assembly and the temperature heating assembly. Those skilled in the art will understand that the machine connector and the stepped pin are integrally injection-molded. In a preferred embodiment, three stepped pins are provided. The three stepped pins can ensure that the power supply will not loosen when the product is repeatedly plugged in and out of the device. The nickel plating on the surface is brighter and not prone to oxidation and corrosion. The "double-wing" machine connector structure has an anti-slip strip design on the outside and a rib stroke limit on the inside, which is simple and ensures practicality and beautiful appearance of the structure.

[0037] Furthermore, in the working state, after the machine connector and the stepped pin are connected to the heating pipeline as an integral injection-molded structure, a rubber-coating molding process is performed. Those skilled in the art understand that sealing by rubber-coating can make the heated breathing pipeline more practical and comfortable when in use, and is not likely to slip when in contact with water.

[0038] Furthermore, the heated breathing circuit also includes an assembled sealing structure formed by a circuit machine sealing joint and a circuit machine sealing joint silicone, and the assembled sealing structure performs circuit sealing with the machine joint in a working state, such as Figure 1 As shown, the pipeline machine sealing joint and the pipeline machine sealing joint silicone are assembled and sealed by a plurality of groove structures and are integrally installed to the machine joint. The pipeline is sealed by a rounded corner at one end of the pipeline machine sealing joint silicone and a chamfer inside the machine joint.

[0039] Furthermore, the integrated structure of the temperature sensor assembly and the temperature heating assembly is connected to the heating pipeline by welding, while in other embodiments, the above connection method can also be riveting, bonding or threaded connection, which does not affect the specific implementation scheme of the present invention and will not be elaborated here.

[0040] Furthermore, the machine connector and the stepped pin are an integral injection-molded structure and are connected to the heating pipeline by welding. In other embodiments, the connection method may also be riveting, bonding or threaded connection. These do not affect the specific implementation scheme of the present invention and will not be elaborated here.

[0041] Further, the spiral heating component comprises M heat-resistant enameled wires coated with resistance wires, wherein the M heat-resistant enameled wires are wound around the outer wall of the heating pipe and form a heating circuit with the temperature heating component, and M≥1. A person skilled in the art will understand that, as a preferred embodiment of the present invention, three resistance wires are provided, and the resistance wires are coated with heat-resistant enameled wires, that is, a group of three resistance wires of heat-resistant enameled wires are fitted on the heating pipe, and further, the resistance wires in the heat-resistant enameled wires form a heating circuit with the temperature heating component to heat the heat-resistant enameled wires, and the heat-resistant enameled wires are wound around the outer wall of the heating pipe to heat the heating pipe.

[0042] Furthermore, the diameter of the heat-resistant enameled wire is 0.1-0.5 mm. In a preferred embodiment, the diameter of the heat-resistant enameled wire is 0.25 mm, and in other embodiments, the diameter may be 0.1 mm or 0.5 mm, which will not be elaborated here.

[0043] Furthermore, in the horizontal direction, the spacing distance between the heat-resistant enameled wires of the heating pipeline along the length direction is 3mm to 4mm, the interior of the outer spiral heating pipeline is smooth without dead corners and is not easy to breed bacteria, and the heating pipeline has good flexibility and tensile strength. In a preferred embodiment, three 0.3mm diameter enameled wires are attached to the outer wall of the heating pipeline using a special process. Three wires are grouped together and the distance between each group is 3.5mm, ensuring that heat is evenly transferred to the pipe during heating, thereby ensuring the temperature inside the pipe. At the same time, the inner diameter of the outer spiral heating pipeline is set to a large size. Preferably, the size is 19mm. The large size will be more conducive to increasing the flow rate and has the characteristics of large flow output.

[0044] Those skilled in the art will appreciate that the present invention also provides a heated breathing circuit system, which comprises: Figure 1 The heated breathing circuit shown in the figure at least includes a humidifier, and the heated breathing circuit is installed on the humidifier so that the temperature of the heated breathing circuit can be controlled by the humidifier to achieve temperature regulation. Preferably, the temperature sensor assembly and the temperature heating assembly are injection molded as one and the separate design avoids interference from the temperature heating assembly, and the temperature sensor assembly has higher temperature control sensitivity; the temperature sensor assembly is used to measure the temperature of the humidified gas in the pipeline, and the high-standard thermistor monitors the pipeline temperature at all times and feeds back to the host system to adjust the control temperature. The temperature heating assembly is used to heat three resistance wires to make the pipeline heat up, so that the pipeline forms a heating circuit.

[0045] Furthermore, by installing the machine connector in the heated breathing circuit in the present application onto the humidification therapy device, adjusting the equipment parameter temperature to a certain temperature, such as 37°C, flow rate 40L / min, humidified gas flows out of the pipeline, the temperature sensor component senses the change in gas temperature resistance and feeds back to the host, the host power supply adjusts the background parameters to control the current heating according to the feedback information, and the temperature of the air outlet is at 37°C ± 2°C at this time, so that a certain temperature is maintained in the pipeline, thereby reducing the formation of condensed water. The present invention overcomes the problems of uneven heating of the heated breathing circuit, large wind resistance at small flow rates, easy breeding of bacteria due to wrinkles in the tube, risk of leakage and short circuit of the heating wire in the tube, and complex installation methods.

[0046] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A heated breathing circuit, which is used to assist a humidifier in heating humidified gas, thereby preventing the formation of condensed water, characterized in that: The device comprises at least a heating pipeline (1), a temperature sensor assembly (2), and a temperature heating assembly (3), wherein the temperature sensor assembly and the temperature heating assembly are arranged at an interval, and the heating pipeline (1) is respectively connected to the temperature sensor assembly (2) and the temperature heating assembly (3), wherein: The temperature sensor component (2) and the temperature heating component (3) are an integral injection-molded structure and are connected to the heating pipeline (1), wherein: A spiral heating component (11) is provided on the outer circumferential surface of the heating pipeline (1) along the length direction, and the temperature heating component (3) is electrically connected to the spiral heating component (11); It also comprises a pipe joint (4), wherein the pipe joint (4) is connected to the injection-molded integrated structure formed by the temperature sensor component (2) and the temperature heating component (3) to form a rubber-encapsulated sealing body; It also includes a machine connector (5) and a stepped pin (6), wherein the machine connector (5) and the stepped pin (6) are an integral injection-molded structure and are connected to one end of the heating pipeline (1) away from the temperature sensor assembly (2) and the temperature heating assembly (3).

2. The heated breathing circuit according to claim 1, characterized in that: In the working state, after the machine connector (5) and the stepped pin (6) are connected to the heating pipeline (1) as an integral injection-molded structure, an overmolding process is performed.

3. The heated breathing circuit according to claim 2, characterized in that: It also includes an assembled sealing structure formed by a pipeline machine sealing joint (7) and a pipeline machine sealing joint silicone (8), wherein the assembled sealing structure performs pipeline sealing with the machine joint (5) in a working state.

4. The heated breathing circuit according to claim 1, characterized in that: The connection method of the integrated structure of the temperature sensor component (2) and the temperature heating component (3) and the heating pipeline (1) at least includes: -welding; - Riveting; - bonding; or -Threaded connection.

5. The heated breathing circuit according to claim 1, characterized in that: The machine connector (5) and the stepped pin (6) are an injection-molded integrated structure, and the connection method with the heating pipeline (1) at least includes: -welding; - Riveting; - bonding; or -Threaded connection.

6. The heated breathing circuit according to claim 1, characterized in that: The spiral heating component (11) comprises M heat-resistant enameled wires coated with resistance wires, wherein: The M heat-resistant enameled wires are wound around the outer wall of the heating pipeline (1) and form a heating circuit with the temperature heating component (3), and M≥1.

7. The heated breathing circuit according to claim 6, characterized in that The diameter of the heat-resistant enameled wire is 0.1-0.5 mm.

8. The heated breathing circuit according to claim 6, characterized in that: In the horizontal direction, the spacing distance between the heat-resistant enameled wires of the heating pipeline (1) along the length direction is 3 mm to 4 mm.

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