Warming and humidifying device for artificial airway

Abstract

The utility model discloses a kind of heating and humidifying devices for artificial airway, this heating and humidifying device is set to cylindrical structure, heating and humidifying device includes the outside cylinder wall and inside cylinder wall of its radial layering arrangement, the inside of inside cylinder wall forms the air passage of communication with outside, the inner wall surface of inside cylinder wall is provided with the heating element of heating gas in air passage, and, inside cylinder wall and outside cylinder wall meet in the both ends of axis direction, to make that inside cylinder wall and outside cylinder wall form the containing cavity of liquid storage between;And, the inner wall surface of inside cylinder wall is also provided with the liquid suction accessory of meeting with heating element. When using, it is connected in the end on the end of artificial airway, heating element can heat to heat the air in air passage. And liquid suction accessory can vaporize liquid adsorbed to play humidification effect to the air in air passage. The structure of this heating and humidifying device is small and exquisite, convenient to carry.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a heating and humidifying device for artificial airways. Background Technology

[0002] When patients experience airway obstruction or respiratory depression, artificial airway placement, including endotracheal intubation or tracheotomy, is often performed clinically. Endotracheal intubation involves inserting a specially designed tube through the mouth or nose, via the glottis, into the trachea. The endotracheal incision site is typically between the 2nd and 4th rings of the thyroid cartilage, where the endotracheal tube is inserted to form an artificial airway. After artificial airway placement, the patient's airway loses its ability to humidify, warm, and filter inhaled air, weakening its protective function. The airway remains open to the outside environment, and inhaled air does not pass through the nasal cavity and pharynx, failing to receive adequate warming and humidification, leading to dry airway mucosa, secretion retention, and potentially lung infections.

[0003] In clinical practice, there are already various devices for warming and humidifying artificial airways.

[0004] For patients who rely on ventilators for continuous breathing, a heating guidewire is installed in the inspiratory side of the ventilator to meet the heating needs of the inhaled gas, and a humidifier canister is used to meet the humidification needs of the inhaled gas. This heating and humidification device is generally integrated into the ventilator equipment, and a single ventilator is large and expensive.

[0005] For patients who do not require continuous mechanical ventilation, the following three methods are often used clinically:

[0006] 1) Use a high-flow oxygen therapy device for continuous heating and humidification. This heating and humidification device is usually integrated into the high-flow oxygen therapy device. A single oxygen therapy device is large, expensive and inconvenient for home use.

[0007] 2) A Venturi mask is used in conjunction with a dedicated heated humidifier to provide continuous heating and humidification of the airway. However, this device requires a dedicated oxygen source.

[0008] 3) A nebulizer specifically designed for tracheotomy is used, but this device can only humidify the inhaled gas and cannot provide heating.

[0009] For patients with artificial airways who do not require ventilator-assisted ventilation in clinical practice, whether in a hospital or at home, there are no portable devices on the market that can simultaneously perform the functions of heating and humidifying inhaled gas. Utility Model Content

[0010] The purpose of this invention is to solve the above-mentioned defects in the existing technology of artificial airway humidification and heating, and to provide a heating and humidification device for artificial airways with the advantage of good portability.

[0011] Specifically, this heating and humidifying device has a cylindrical structure with open ends along the axis. Its outline is adapted to the artificial airway. When assembled onto the artificial airway, it will not protrude too much from the artificial airway, thus improving the portability of the heating and humidifying device.

[0012] When this heating and humidifying device is installed on an artificial airway, one end of the device is connected to the end of the artificial airway, while the other end can be directly connected to the outside. This allows outside air to be delivered into the artificial airway through the device. Of course, this heating and humidifying device can be used alone or added between the artificial airway and the oxygen supply equipment. Specifically, one end is connected to the artificial airway, and the other end is connected to the air supply line of the oxygen supply equipment, thereby heating and humidifying the oxygen supplied by the equipment.

[0013] The heating and humidifying device includes an outer cylinder wall and an inner cylinder wall stacked radially thereon. The inner cylinder wall forms an air channel that extends along the axial direction to both ends of the heating and humidifying device and communicates with the outside. The inner wall surface of the inner cylinder wall is provided with a heating element for heating the gas in the air channel. External air can enter the air channel inside the inner cylinder wall from the other end of the heating and humidifying device. In the air channel, the heating element can generate heat to heat the air in the air channel.

[0014] Furthermore, the inner and outer cylinder walls are connected at both ends along the axial direction, forming a liquid-storing cavity between them. Additionally, a liquid adsorption element connected to the heating element is provided on the inner wall surface of the inner cylinder wall. This adsorption element has, in a radial direction, an adsorption section located within the cavity and a evaporation section located within the air passage. The adsorption section and the evaporation section are connected to each other. The liquid adsorption element on the inner cylinder wall adsorbs the liquid in the cavity between the inner and outer cylinder walls using the adsorption section and diffuses it to the evaporation section. The heating element heats the evaporation section to vaporize the liquid, thereby humidifying the air in the air passage. This allows air with suitable body temperature and humidity to be discharged into the artificial airway from one end, avoiding patient discomfort and reducing the risk of lung infection.

[0015] In summary, this heating and humidifying device for artificial airways is compact and portable. It can be used as an accessory for artificial airways, independent of oxygen therapy equipment, to meet the needs of patients wearing artificial airways at home or when oxygen supply is not required, for heating and humidifying the air inside the artificial airway.

[0016] Furthermore, the heating element is a sheet-like structure that fits into the inner wall of the inner cylinder, which can stably heat the air along the circumference of the air channel, ensuring that the air in the air channel is heated evenly and that the heated air is suitable for the human body.

[0017] Furthermore, this heating element occupies less space in the air channel and generates less resistance to the air flowing along the axial direction in the air channel, ensuring the airflow rate in the air channel.

[0018] Furthermore, in the axial direction, the heating element is closer to the inner wall of the cylinder and closer to the end connected to the artificial airway, so that the heated and humidified air can quickly enter the artificial airway and reduce the heat loss of the air.

[0019] Furthermore, the heating and humidifying device includes multiple liquid adsorption elements, each of which is a columnar structure and is fixed to the inner cylinder wall extending radially along the heating and humidifying device.

[0020] The inner cylinder wall has multiple sets of mounting holes spaced apart along the axial direction. Each set of mounting holes includes multiple mounting holes arranged at equal intervals along the circumference of the inner cylinder wall. Furthermore, the adsorption part of each liquid adsorption component extends into a corresponding mounting hole, and a sealing gasket is provided between the outer wall of the liquid adsorption component and the corresponding mounting hole.

[0021] Furthermore, the surface of the heating element is formed with multiple through holes that are adapted to each liquid adsorbent, and the evaporation part of each liquid adsorbent extends into the air channel through the through holes.

[0022] After being heated by the heating element, multiple sets of liquid adsorption elements vaporize the liquid in their evaporation sections, thereby humidifying the air in the air channel sequentially along the axial direction. Furthermore, each set of liquid adsorption elements is arranged at equal intervals along the circumference of the inner cylinder wall, ensuring that the air in the air channel is uniformly humidified.

[0023] Furthermore, the columnar liquid adsorption component passes through the mounting hole in the inner cylinder wall and the through hole of the heating element in sequence, which not only ensures the assembly stability of the liquid adsorption component and the inner cylinder wall, but also allows the liquid adsorption component passing through the through hole to be heated circumferentially by the heating element, thereby vaporizing the liquid adsorbed inside the liquid adsorption component.

[0024] In addition, a sealing gasket is provided between the outer wall of the liquid adsorption component and the corresponding mounting hole, which can prevent the liquid stored between the outer and inner cylinder walls from seeping into the air channel inside the inner cylinder wall through the mounting hole, thereby improving the sealing of the liquid storage cavity and preventing the liquid in the storage cavity from seeping into the air channel and being inhaled into the lungs by the patient, causing choking.

[0025] Furthermore, the heating element is made of a nano heating film, which can directly convert electrical energy into heat energy. It has the characteristics of rapid response and high heating efficiency, thereby quickly heating the air in the artificial airway and heating and vaporizing the liquid in the liquid adsorption element.

[0026] Liquid adsorbents are made from any one of the following: wood core rods, carbon core rods, fiber core rods, or wood powder core rods. They possess strong adsorption capacity for liquids. During adsorption, the solid or liquid surface adsorbs gases or solutes through chemical bonds or physical interactions, releasing heat of adsorption. This heat of adsorption raises the liquid temperature, increasing the kinetic energy of the liquid molecules. When the kinetic energy of the liquid molecules is sufficiently high, they can overcome intermolecular forces, making it easier for them to transition from the liquid surface to a gaseous state.

[0027] In addition, the adsorption process itself also changes the surface state of the liquid, making it easier for molecules on the liquid surface to overcome attractive forces, thereby accelerating the vaporization process. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure of a heating and humidifying device for an artificial airway provided in an embodiment of this utility model;

[0029] Figure 2 Axial sectional view of a heating and humidifying device for an artificial airway (the housing cavity is divided into a first cavity and a second cavity by a partition layer) provided for an embodiment of the present invention.

[0030] Figure 3 Axial sectional view of a heating and humidifying device for an artificial airway provided for an embodiment of this utility model;

[0031] Figure 4 A cross-sectional schematic diagram of a heating and humidifying device for an artificial airway provided in an embodiment of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10. Heating and humidifying device;

[0034] 100. Outer wall of the cylinder; 110. Receiving cavity; 111. First chamber; 112. Second chamber;

[0035] 200. Inner cylinder wall; 210. Air passage;

[0036] 300. Heating element;

[0037] 400. Liquid adsorption component; 410. Adsorption section; 420. Volatilization section;

[0038] 500. Sealing cap;

[0039] 600, Power supply;

[0040] 101. Connector; 102. Sealing sidewall; 103. Embedded sidewall; 104. Fine thread;

[0041] Z represents the axial direction; Y represents the radial direction. Detailed Implementation

[0042] Normal respiratory mucosa has the functions of warming, humidifying, filtering, and clearing foreign objects from the airway. Most of the warming and humidification process takes place in the nasopharynx and oropharynx. The most suitable temperature for humidification in the human body is to reach the isothermal saturation interface, i.e., 37°C, absolute humidity of 44 mgH2O / L (milligrams of water per liter), and relative humidity of 100%. When patients experience airway obstruction or respiratory depression, tracheotomy is a common emergency and treatment procedure in clinical practice.

[0043] When a patient's trachea is cut open, an artificial airway needs to be inserted. This involves inserting a special tube through the mouth or nose, through the glottis, into the trachea. Once an artificial airway is established, the body's natural humidification system is bypassed, and the respiratory tract's warming and humidifying functions are lost. Prolonged direct inhalation of unhumidified oxygen can lead to thickened bronchial secretions that are difficult to suction or cough up, forming sputum crusts, and even obstructing the tracheostomy tube, worsening airway obstruction and causing lung infections. Therefore, it is necessary to humidify and heat the oxygen inhaled by the patient.

[0044] In existing technologies, the device for heating and humidifying the air in the artificial airway is usually integrated into the air supply pipeline of the oxygen supply equipment. That is, when the artificial airway is removed from the oxygen supply equipment, it loses the function of heating and humidifying the air in the artificial airway, which cannot meet the needs of some patients who carry artificial airways but live at home or do not need special oxygen supply.

[0045] Therefore, this utility model provides a heating and humidifying device for artificial airways. The device has a cylindrical structure and includes an outer cylindrical wall and an inner cylindrical wall stacked radially thereon. An air channel communicating with the outside is formed inside the inner cylindrical wall. A liquid-containing space is formed between the outer and inner cylindrical walls. A heating element and a liquid-absorbing element extending into the containing cavity are formed on the inner wall surface of the inner cylindrical wall. In use, one end of the heating and humidifying device is connected to the end of the artificial airway. The heating element generates heat to heat the air in the air channel. Furthermore, it vaporizes the liquid absorbed by the liquid-absorbing element to humidify the air in the air channel.

[0046] This heating and humidifying device is compact and portable. It can be used as an accessory for artificial airways and can be used independently of oxygen therapy equipment. It meets the needs of patients wearing artificial airways at home or when oxygen supply is not required, to heat and humidify the air in the artificial airway.

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0048] like Figure 1 As shown, this utility model discloses a heating and humidifying device 10 for an artificial airway. This heating and humidifying device 10 has a cylindrical structure with both ends open in the Z-direction along its axis. One end of the heating and humidifying device 10 is connected to the end of the artificial airway. It should be noted that the other end of the heating and humidifying device 10 can be connected to the external environment, heating and humidifying the air from the external environment before supplying it to the artificial airway connected to the patient's trachea. The other end of the heating and humidifying device 10 can also be connected to a filter assembly to filter impurities from the external environment, thereby improving the cleanliness of the air supplied to the artificial airway. The other end of the heating and humidifying device 10 can also be connected to the pipeline of an oxygen supply device to heat and humidify the oxygen supplied by the oxygen supply device before delivering it to the artificial airway. Those skilled in the art can design such devices according to actual conditions and specific needs; this embodiment does not impose specific limitations on these designations.

[0049] Among them, such as Figure 2 and Figure 3 As shown, the heating and humidifying device 10 includes an outer cylinder wall 100 and an inner cylinder wall 200 stacked along its radial direction Y. An air channel 210 is formed inside the inner cylinder wall 200, extending along the axial direction Z to both ends of the heating and humidifying device 10 and communicating with the outside. A heating element 300 for heating the gas in the air channel 210 is provided on the inner wall surface of the inner cylinder wall 200.

[0050] Furthermore, the inner cylinder wall 200 and the outer cylinder wall 100 are connected at both ends in the Z-axis direction, so that a liquid-containing cavity 110 is formed between the inner cylinder wall 200 and the outer cylinder wall 100. The liquid stored in the cavity 110 can be sterile water for humidification or a drug solution mixed with medication, which is mixed into the artificial airway after the drug solution is vaporized and inhaled by the patient for nebulization therapy.

[0051] Specifically, a liquid adsorption component 400 is provided on the inner wall surface of the inner cylinder wall 200, which is in contact with the heating component 300. The liquid adsorption component 400 has an adsorption part 410 located in the receiving cavity 110 and an evaporation part 420 located in the air channel 210 along the radial Y direction. The adsorption part 410 and the evaporation part 420 are in contact with each other. The adsorption part 410 adsorbs the liquid in the receiving cavity 110 and diffuses it to the evaporation part 420. The heating component 300 heats the evaporation part 420 so that the liquid in the evaporation part 420 vaporizes.

[0052] During the adsorption process, the liquid adsorbent 400 or the liquid surface adsorbs gases or solutes through chemical bonds or physical interactions, releasing heat of adsorption. Due to this heat, the liquid temperature rises, increasing the kinetic energy of the liquid molecules. When the kinetic energy of the liquid molecules is sufficiently high, they can overcome intermolecular forces, making it easier for them to transition from the liquid surface to a gaseous state.

[0053] In addition, the adsorption process itself also changes the surface state of the liquid, making it easier for molecules on the liquid surface to overcome attractive forces, thereby accelerating the vaporization process.

[0054] This heating and humidifying device 10 for artificial airways is designed with a cylindrical structure. In use, one end is connected to the end of the artificial airway. External air can enter the air channel 210 inside the inner cylindrical wall 200 from the other end of the heating and humidifying device 10. Inside the air channel 210, the heating element 300 can generate heat to heat the air inside the air channel 210. At the same time, the liquid adsorption element 400 located on the inner cylindrical wall 200 can adsorb the liquid in the cavity 110 between the inner cylindrical wall 200 and the outer cylindrical wall 100, and diffuse it from the adsorption part 410 to the evaporation part 420. The heating element 300 heats the evaporation part 420 to vaporize the liquid in the evaporation part 420, thereby humidifying the air inside the air channel 210. This allows air with a suitable temperature and humidity for the human body to be discharged into the artificial airway from one end, avoiding discomfort for the patient and reducing the risk of lung infection.

[0055] In summary, this heating and humidifying device 10 for artificial airways is compact and portable. It can be used as an accessory to the artificial airway, independent of the oxygen therapy device, to meet the needs of patients wearing artificial airways at home or when oxygen supply is not required, for heating and humidifying the air within the artificial airway. Of course, this heating and humidifying device 10 can not only be used alone, but can also be added between the artificial airway and the oxygen supply device. Specifically, one end is connected to the artificial airway, and the other end is connected to the air delivery line of the oxygen supply device, thereby heating and humidifying the oxygen supplied by the oxygen supply device.

[0056] It should be noted that, in this embodiment, the outer cylinder wall 100 and the inner cylinder wall 200 are stacked in a radial Y direction, thereby forming a cavity inside the inner cylinder wall 200 and between the outer cylinder wall 100 and the inner cylinder wall 200.

[0057] Optionally, in one embodiment, the interior of the inner cylinder wall 200 forms an air passage 210 for air circulation, and the space between the outer cylinder wall 100 and the inner cylinder wall 200 forms a liquid-containing cavity 110. Alternatively, in another embodiment, the interior of the inner cylinder wall 200 forms a liquid-containing cavity 110, while the space between the outer cylinder wall 100 and the inner cylinder wall 200 forms an air passage 210 for air circulation. It should be noted that the liquid-containing cavity 110 needs to be a sealed cavity. This is to prevent liquid leakage and to ensure the cleanliness of the liquid within the cavity 110, preventing contamination by external impurities.

[0058] The following description uses the example of an air passage 210 formed inside the inner cylinder wall 200 for air circulation, and a liquid-containing cavity 110 formed between the outer cylinder wall 100 and the inner cylinder wall 200.

[0059] like Figure 2 and Figure 3 As shown, in order to ensure the airtightness of the liquid storage cavity 110, the outer cylinder wall 100 and the inner cylinder wall 200 are connected to each other at both ends in the axial direction Z to form end faces.

[0060] Since a large amount of liquid is required for long-term vaporization, the volume of the cavity 110 between the outer cylinder wall 100 and the inner cylinder wall 200 to contain the liquid is limited. Optionally, in one embodiment, a water inlet is formed on the outer cylinder wall 100, penetrating the outer cylinder wall 100 and communicating with the cavity 110. Furthermore, the heating and humidifying device 10 also includes a sealing cap 500 that can be opened and disposed at the water inlet.

[0061] During normal use, the water inlet is sealed by the sealing cap 500 to prevent liquid from leaking out. When the liquid in the containing cavity 110 is exhausted, the sealing cap 500 can be manually opened to inject liquid through the water inlet. Of course, powdered medicine can also be injected through the water inlet to dissolve in the liquid; this utility model does not specifically limit this.

[0062] Furthermore, even when the heating and humidifying device 10 is not in use, the liquid adsorption element 400 will continue to adsorb and evaporate the liquid within the containing cavity 110. Therefore, as... Figure 2 As shown, in one embodiment, an openable partition layer is formed in the receiving cavity 110 to divide the receiving cavity 110 into a first chamber 111 and a second chamber 112. Liquid is stored in the first chamber 111, and the adsorption part 410 of the liquid adsorption member 400 is formed in the second chamber 112.

[0063] When the heating and humidifying device 10 is not in use, since the liquid is stored in the first chamber 111 and the adsorption part 410 of the liquid adsorption member 400 is located in the second chamber 112, the adsorption part 410 of the liquid adsorption member 400 cannot adsorb the liquid, thus reducing the waste of liquid in the containing cavity 110. When the heating and humidifying device 10 is in use, by manually squeezing the part of the outer cylinder wall 100 located in the first chamber 111, the pressure in the first chamber 111 is increased, thereby breaking through the partition layer between the first chamber 111 and the second chamber 112. The liquid in the first chamber 111 will enter the second chamber 112 and be adsorbed by the liquid adsorption member 400 for vaporization.

[0064] The heating element 300 disposed on the inner cylinder wall 200 in this embodiment will be described in detail below.

[0065] The heating element 300 is disposed on the inner wall 200 and is used to heat the air in the air channel 210 and the liquid adsorption element 400. Optionally, in one embodiment, such as Figure 2 and Figure 4 As shown, the heating element 300 has a sheet-like structure that fits against the inner wall surface of the inner cylinder wall 200. It should be noted that the sheet-like heating element 300 can be installed on the inner cylinder wall 200 by snap-fit. Of course, an installation groove can also be provided on the inner surface of the inner cylinder wall 200 to embed the heating element 300 into the inner cylinder wall 200. This utility model does not make specific limitations in this regard.

[0066] The heating element 300 is configured as a sheet-like structure that adheres to the inner wall surface of the inner cylinder wall 200, which can stably heat the air along the circumference of the air channel 210, ensuring that the air in the air channel 210 is heated evenly and that the heated air is suitable for the human body.

[0067] Furthermore, this heating element 300 occupies less space in the air channel 210 and generates less resistance to the air flowing along the axial direction Z in the air channel 210, ensuring the airflow rate in the air channel 210.

[0068] Specifically, in this embodiment, the heating element 300 is made of a nano heating film. The nano heating film can directly convert electrical energy into heat energy, and has the characteristics of fast response and high heating efficiency, thereby quickly heating the air in the artificial airway and heating and vaporizing the liquid in the liquid adsorption element 400.

[0069] Furthermore, such as Figure 2 and Figure 3 As shown, in the axial direction Z, the heating element 300 is closer to the inner cylinder wall 200 and closer to the end connected to the artificial airway.

[0070] Because the heating element 300 is closer to the inner wall 200 and closer to the end connected to the artificial airway, the heated and humidified air can quickly enter the artificial airway, reducing the heat loss of the air.

[0071] In another alternative embodiment, the heating element 300 completely covers the inner wall surface of the inner cylinder wall 200, thereby heating the air in the entire air channel 210. Regarding the portion of the sheet-like heating element 300 that covers the inner cylinder wall 200, those skilled in the art can design it according to actual conditions and specific needs, and this embodiment does not specifically limit it in this regard.

[0072] It should be noted that this heating and humidifying device 10 also includes a power supply 600 electrically connected to the heating element 300. Specifically, the power supply 600 can be a lithium-ion battery commonly used in the art, and is connected to the heating element 300 in a circuit via a wire with a switch in series. The switch controls the current flow between the power supply 600 and the heating element 300. Furthermore, the power supply 600 can be located on the inner wall surface of the inner cylinder wall 200 or on the outer wall surface of the outer cylinder wall 100. This embodiment does not specifically limit this, and those skilled in the art can design it according to actual conditions and specific needs. This embodiment does not specifically limit this.

[0073] In another alternative embodiment, the heating element 300 is configured as a heating wire spirally wound along the axial direction in a Z-shape and attached to the inner wall 200, while the liquid adsorption element 400 is disposed at the intervals of the heating wire. When the heating wire heats up, it can accelerate the vaporization of the liquid in the evaporation section 420 of the liquid adsorption element 400. This heating wire is relatively inexpensive, which can reduce the cost of the heating and humidifying device 10.

[0074] The liquid adsorption element 400 disposed on the inner cylinder wall 200 in this embodiment will be described in detail below.

[0075] The liquid adsorption element 400 is disposed on the inner wall surface of the inner cylinder wall 200. Based on the function of its various parts, it is divided into an adsorption section 410 and a evaporation section 420. The adsorption section 410 is located within the receiving cavity 110 and is used to adsorb liquid. The liquid adsorbed by the adsorption section 410 diffuses to the evaporation section 420 located in the air channel 210, where it is heated and vaporized by the heating element 300. This liquid adsorption element 400 can improve the vaporization efficiency of the liquid and better humidify the air within the air channel 210.

[0076] Optionally, such as Figure 4 As shown, in one embodiment, the heating and humidifying device 10 includes a plurality of liquid adsorption elements 400. Each liquid adsorption element 400 has a columnar structure and is fixed to the inner cylinder wall 200 extending radially Y along the heating and humidifying device 10. The number of liquid adsorption elements 400 can be one, two, three, five, or other numbers, and this utility model does not specifically limit this number.

[0077] Among them, such as Figure 2 and Figure 4 As shown, multiple sets of mounting holes are arranged at intervals along the axial direction Z on the inner cylinder wall 200. Each set of mounting holes includes multiple mounting holes arranged at equal intervals along the circumference of the inner cylinder wall 200. Furthermore, the adsorption part 410 of each liquid adsorption component 400 extends into a corresponding mounting hole, and a sealing gasket is provided between the outer wall of the liquid adsorption component 400 and the corresponding mounting hole.

[0078] Furthermore, the surface of the heating element 300 is formed with a plurality of through holes adapted to each liquid adsorbent 400, and the evaporation part 420 of each liquid adsorbent 400 extends into the air channel 210 through the through holes.

[0079] It should be noted that the number of mounting holes on the inner cylinder wall 200 and the number of through holes on the heating element 300 are related to the number and arrangement of the liquid adsorption elements 400.

[0080] Optionally, in one embodiment, two sets of liquid adsorption elements 400 are arranged at intervals along the axial direction Z on the inner cylinder wall 200. After being heated by the heating element 300, the two sets of liquid adsorption elements 400 can vaporize the liquid in their evaporation section 420, thereby humidifying the air in the air channel 210 along the axial direction Z.

[0081] Furthermore, each set of liquid adsorption elements 400 includes four liquid adsorption elements 400 arranged at equal intervals along the circumference of the inner cylinder wall 200, with the included angle between two adjacent liquid adsorption elements 400 being ninety degrees, thereby making the air in the air channel 210 uniformly humidified.

[0082] The columnar liquid adsorption component 400 passes through the mounting hole of the inner cylinder wall 200 and the through hole of the heating component 300 in sequence. This not only ensures the assembly stability of the liquid adsorption component 400 and the inner cylinder wall 200, but also allows the liquid adsorbed in the liquid adsorption component 400 to be heated circumferentially by the heating component 300 through the through hole, thereby vaporizing the liquid adsorbed in the liquid adsorption component 400.

[0083] In addition, a sealing gasket is provided between the outer wall of the liquid adsorption component 400 and the corresponding mounting hole, which can prevent the liquid stored between the outer cylinder wall 100 and the inner cylinder wall 200 from seeping into the air channel 210 inside the inner cylinder wall 200 through the mounting hole, thereby improving the sealing of the liquid storage cavity 110 and preventing the liquid in the storage cavity 110 from seeping into the air channel 210 and being inhaled into the lungs by the patient, causing choking.

[0084] Optionally, in one embodiment, the liquid adsorption element 400 is made of any one of a wood core rod, a carbon core rod, a fiber core rod, or a wood powder core rod. Among these, the wood core rod is more resistant to bending, has more stable volatilization, and a longer service life compared to other materials. It is not easily broken and is suitable for long-term use. The carbon core rod and the wood powder core rod have good adsorption and stability. The fiber core rod also has a good volatilization effect, is not easily broken, and is more stable in use. Those skilled in the art can design it according to actual conditions and specific needs. This embodiment does not make specific limitations in this regard.

[0085] The connection structure between the heating and humidifying device 10 and other components is described below.

[0086] When in use, the heating and humidifying device 10 must be connected to the artificial airway at least one end, while the other end may not be connected to any component, or may optionally be connected to the filter assembly or the pipeline of the oxygen supply equipment.

[0087] Furthermore, in this embodiment, in order to improve the connection stability between the heating and humidifying device 10 and other components, the heating and humidifying device 10 is provided with a connector 101 at least at one end in the Z-axis direction.

[0088] Optionally, in one embodiment, a connector 101 is provided at one end of the heating and humidifying device 10, and the heating and humidifying device 10 is connected to one end of the artificial airway through the connector 101.

[0089] like Figure 2 and Figure 3 As shown, the inner cylinder wall 200 and the outer cylinder wall 100 are joined at their ends in the axial direction Z to form an end face. The connector 101 includes a sealing side wall 102 and an embedded side wall 103, which are disposed on the outer side of the end face and extend along the axial direction Z of the heating and humidifying device 10. In the radial direction Y, the sealing side wall 102 is located on the side of the embedded side wall 103 that is away from the air passage 210.

[0090] The sealing sidewall 102 is fitted on the outside of the corresponding assembled artificial airway, and the inner sidewall 103 is embedded in the artificial airway of the corresponding assembled tube.

[0091] More specifically, in this embodiment, the inner surface of the sealing sidewall 102 is formed with fine thread 104 that is adapted to and connected to the outer wall of the artificial airway.

[0092] In this embodiment, the heating and humidifying device 10 is connected to the artificial airway through the fine thread 104 on the sealing sidewall 102. This not only ensures the stability of the connection between the heating and humidifying device 10 and the artificial airway, but also improves the sealing between the heating and humidifying device 10 and the artificial airway, preventing unhumidified gas at room temperature from seeping into the artificial airway from the connection between the two.

[0093] In another alternative embodiment, such as Figure 2 and Figure 3 As shown, both ends of the heating and humidifying device 10 are provided with connectors 101, and the connectors 101 at both ends have the same structure.

[0094] The heating and humidifying device 10 has one end connected to an artificial airway via a connector 101, and the other end connected to a filter assembly via a connector 101. It should be noted that the filter assembly is mainly used to filter impurities in the outside air and can be a filter plug or similar material commonly used in this field.

[0095] Of course, one end of the heating and humidifying device 10 can be connected to the artificial airway via connector 101, and the other end can be connected to the pipeline of the oxygen supply equipment via connector 101.

[0096] Of course, the connection method between the heating and humidifying device 10 and the gas component is not limited to the connector 101 in the above embodiment. For example, the connector 101 may not be provided at both ends of the heating and humidifying device 10. The heating and humidifying device 10 can be connected to the pipelines of other components through the existing connection structure. Those skilled in the art can design according to the actual situation and specific needs. This embodiment does not limit this to a single method.

[0097] In summary, this utility model provides a heating and humidifying device 10 for an artificial airway. Patients with an artificial airway can connect one end of the heating and humidifying device 10 to the end of the artificial airway at home or in other situations where no external oxygen supply equipment is required. For example, a connector 101 is provided at one end of the heating and humidifying device 10. The inner sidewall 103 of the connector 101 is embedded into the inner side of the artificial airway, while the sealing sidewall 102 of the connector 101 is tightened and fixed to the outer side of the artificial airway (with a corresponding fine thread) by a fine thread 104. Then, the heating element 300 located on the inner cylinder wall 200 starts to work. While heating the air in the air passage 210, the heating element 300 also heats the evaporation part 420 of the liquid adsorption element 400, accelerating the vaporization of the liquid in the evaporation part 420, thereby humidifying the air in the air passage 210. When the patient inhales through the artificial airway, they can inhale air with a suitable body temperature and humidity.

[0098] Of course, the other end of the heating and humidifying device 10 can also be connected to the oxygen supply equipment, for example, by connecting it to the oxygen supply pipeline of the oxygen supply equipment through the connector 101 set in another section, so as to heat and humidify the oxygen supplied by the oxygen supply equipment.

[0099] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0100] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0101] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model 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. Therefore, they should not be construed as limitations on the utility model.

[0102] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0103] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0104] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A heating and humidifying device for artificial airways, characterized in that, The heating and humidifying device has a cylindrical structure with both ends open along its axis, and one end of the heating and humidifying device is connected to the end of the artificial airway; wherein The heating and humidifying device includes an outer cylindrical wall and an inner cylindrical wall stacked radially thereon. The interior of the inner cylindrical wall forms an air channel extending axially to both ends of the heating and humidifying device and communicating with the outside. The inner wall surface of the inner cylindrical wall is provided with a heating element for heating the gas within the air channel. The inner cylinder wall and the outer cylinder wall are connected at both ends in the axial direction to form a liquid storage cavity between the inner cylinder wall and the outer cylinder wall; and a liquid adsorption member is provided on the inner wall surface of the inner cylinder wall, which is connected to the heating element. The liquid adsorption member has an adsorption part located in the storage cavity and a evaporation part located in the air channel along the radial direction. The adsorption part and the evaporation part are connected to each other. The adsorption part adsorbs the liquid in the storage cavity and diffuses it to the evaporation part. The heating element heats the evaporation part to vaporize the liquid in the evaporation part.

2. The heating and humidifying device for artificial airways as described in claim 1, characterized in that, The heating element is a sheet-like structure that fits into the inner wall of the inner cylinder.

3. The heating and humidifying device for artificial airways as described in claim 2, characterized in that, In the axial direction, the heating element is closer to the inner wall of the cylinder, near the end connected to the artificial airway.

4. The heating and humidifying device for artificial airways as described in claim 3, characterized in that, The heating and humidifying device includes a plurality of liquid adsorption elements, each of which is a columnar structure and is fixed to the inner wall of the heating and humidifying device, extending radially along the inner side of the device; wherein On the inner cylindrical wall, multiple sets of mounting holes are spaced apart along the axial direction. Each set of mounting holes includes multiple mounting holes arranged at equal intervals along the circumference of the inner cylindrical wall. The adsorption portion of each liquid adsorption element extends into a corresponding mounting hole, and a sealing gasket is provided between the outer wall of the liquid adsorption element and the corresponding mounting hole; and The surface of the heating element is formed with a plurality of through holes adapted to each of the liquid adsorbents, and the evaporation portion of each liquid adsorbent extends into the air channel through the through holes.

5. The heating and humidifying device for artificial airways as described in claim 4, characterized in that, in The heating element is made of a nano heating film, and the liquid adsorption element is made of any one of the following: wood core rod, carbon core rod, fiber core rod, and wood powder core rod.

6. The heating and humidifying device for artificial airways as described in any one of claims 1-5, characterized in that, The heating and humidifying device is provided with a connector at least at one end along its axial direction; wherein One end of the heating and humidifying device is provided with the connector, and the heating and humidifying device is connected to one end of the artificial airway through the connector; or Both ends of the heating and humidifying device are provided with the connector. One end of the heating and humidifying device is connected to the artificial airway through the connector, and the other end is connected to the air supply pipeline or filter assembly of the oxygen supply equipment through the connector.

7. The heating and humidifying device for artificial airways as described in claim 6, characterized in that, The inner cylinder wall and the outer cylinder wall are joined at their ends in the axial direction to form an end face. The connector includes a sealing side wall and an embedded side wall disposed on the outer side of the end face and extending along the axial direction of the heating and humidifying device. In the radial direction, the sealing side wall is located on the side of the embedded side wall that is away from the air channel. The sealing sidewall is sleeved on the outside of the corresponding assembly tube, and the embedded sidewall is embedded in the inside of the corresponding assembly tube.

8. The heating and humidifying device for artificial airways as described in claim 7, characterized in that, The inner surface of the sealing sidewall is formed with fine-tooth threads that are adapted to and connected to the outer wall of the corresponding tube.

9. The heating and humidifying device for artificial airways as described in any one of claims 1-5, characterized in that, An openable partition layer is formed within the accommodating cavity to divide the accommodating cavity into a first chamber and a second chamber. The liquid is stored in the first chamber, and the adsorption portion of the liquid adsorption element is formed in the second chamber.

10. The heating and humidifying device for artificial airways as described in any one of claims 1-5, characterized in that, A water inlet is formed on the outer cylinder wall, penetrating the outer cylinder wall and communicating with the accommodating cavity, and The heating and humidifying device also includes a sealing cap that can be opened and disposed at the water inlet.

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