A centrifugal wetting member and airway humidification device

Abstract

The application provides a centrifugal humidifying element and an airway humidifying device, the airway humidifying device comprising a gas conveying unit, a liquid conveying unit and the centrifugal humidifying element; wherein the centrifugal humidifying element comprises a first channel comprising a mixing section, a converging section, a transition section and an atomizing section connected in sequence along an axial direction; and a second channel comprising a ring cavity and a plurality of centrifugal flow channels, the ring cavity being arranged on a circumferential side of the mixing section, the plurality of centrifugal flow channels being arranged between the ring cavity and the mixing section in a circumferential direction, and two ends of each centrifugal flow channel being in communication with the ring cavity and the mixing section respectively. In the application, the humidifying liquid is atomized under the action of gas shearing in the atomizing section, so that the centrifugal humidifying element can atomize different humidifying liquids, thereby expanding the application range of the humidifying liquid. The plurality of centrifugal flow channels are arranged between the ring cavity and the mixing section in a circumferential direction, so that the humidifying liquid can enter the mixing section more uniformly, thereby improving the atomizing uniformity of the humidifying liquid.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a centrifugal humidification component and an airway humidification device. Background Technology

[0002] Establishing an artificial airway is a crucial measure in the rescue and treatment of critically ill patients in medicine. An artificial airway is a gas passage established by inserting a tube through the upper respiratory tract into the trachea or directly into the trachea, including endotracheal intubation and tracheotomy. The establishment of an artificial airway creates conditions for effective airway drainage and mechanical ventilation, improving the success rate of treating critically ill patients to some extent. However, at the same time, an artificial airway causes the respiratory tract to lose its functions of humidification, filtration, and warming of inhaled air, leading to increased moisture loss from respiratory secretions. This makes secretions viscous and difficult to expel, and may even obstruct the airway, causing various complications such as lung infections and ventilator-associated pneumonia, affecting patient prognosis. Therefore, the effectiveness of airway humidification directly affects the quality of artificial airway management and patient outcomes, making it particularly important to strengthen the humidification of artificial airways.

[0003] Currently, humidifying solutions used for artificial airway humidification include sodium chloride solution, sterile water for injection, sodium bicarbonate solution, and combined medications. Furthermore, the main humidification methods used for artificial airway humidification include airway drip humidification, nebulized inhalation humidification, and evaporative nebulization. Airway drip humidification, due to the teardrop shape of the humidifying solution, results in uneven humidification distribution and can irritate the respiratory mucosa. Nebulized inhalation humidification is divided into Venturi nebulization and ultrasonic nebulization. Venturi nebulization is difficult to control in terms of the amount of humidifying solution used and can lead to uneven nebulization, resulting in poor inhalation. Ultrasonic nebulization suffers from uneven distribution of the humidifying solution in the airway, leading to insufficient humidification, a large residual volume of humidifying solution, and difficulty in controlling the nebulization volume. Evaporative nebulization can only use sterile water for injection as the humidifying solution, limiting the range of applicable humidifying solutions.

[0004] In summary, existing humidification methods, when used with humidifying fluids to humidify artificial airways, suffer from problems such as uneven humidification, insufficient atomization, difficulty in controlling the amount of humidifying fluid used, and a limited range of applicable humidifying fluid types, thus exhibiting limitations. Summary of the Invention

[0005] The present invention was made to solve the above-mentioned problems, and its purpose is to provide a centrifugal humidification element and an airway humidification device.

[0006] This invention provides a centrifugal humidification component, characterized by: a first channel comprising a mixing section, a converging section, a transition section, and an atomizing section connected sequentially along the axial direction, wherein the opening end of the mixing section is an inlet for gas entry, and the opening end of the atomizing section is an outlet for gas exit; and a second channel comprising an annular cavity and multiple centrifugal channels, wherein the annular cavity is disposed on the periphery of the mixing section and has an inlet for humidifying liquid entry, and the multiple centrifugal channels are distributed circumferentially between the annular cavity and the mixing section, with each centrifugal channel having two ends connected to the annular cavity and the mixing section respectively; wherein the mixing section is used for mixing gas and humidifying liquid, the converging section merges the mixed gas and humidifying liquid by reducing the cross-sectional area, the transition section is used for transitioning the merged gas and humidifying liquid into the atomizing section, and the atomizing section is used for atomizing the humidifying liquid subjected to gas shearing action.

[0007] The centrifugal humidification component provided by the present invention also has the following features: the mixing section is cylindrical and the mixing section is coaxially arranged with the annular cavity.

[0008] The centrifugal humidification component provided by the present invention also has the following feature: multiple centrifugal channels are uniformly distributed circumferentially between the annular cavity and the mixing section.

[0009] The centrifugal humidification component provided by the present invention also has the following feature: each centrifugal channel is arranged along the tangential direction of the cross-section of the mixing section.

[0010] The centrifugal humidification component provided by the present invention also has the following features: the converging section is truncated cone-shaped, the large-diameter end of the converging section is connected to the mixing section, the transition section is cylindrical, one end of the transition section is connected to the small-diameter end of the converging section, and the other end is connected to the atomizing section.

[0011] The present invention provides an airway humidification device, characterized by including a centrifugal humidification element as described above.

[0012] The airway humidification device provided by the present invention also has the feature that the air outlet is used to connect to an artificial airway.

[0013] The centrifugal humidification component provided by the present invention also has the following feature: the size of the air outlet is smaller than the size of the artificial airway.

[0014] The airway humidification device provided by the present invention also has the following features: it further includes a gas delivery unit and a liquid delivery unit. The gas delivery unit is used to input gas into the centrifugal humidification element. The gas delivery unit includes a gas supply device and a venting hose. One end of the venting hose is connected to the gas supply device, and the other end is connected to the air inlet. The liquid delivery unit is used to input humidification liquid into the centrifugal humidification element. The liquid delivery unit includes a liquid supply device and a humidification liquid hose. One end of the humidification liquid hose is connected to the liquid supply device, and the other end is connected to the liquid inlet.

[0015] The airway humidification device provided by the present invention also has the following feature: both the ventilation hose and the humidification liquid hose are equipped with heating mechanisms.

[0016] The role and effect of invention

[0017] According to the centrifugal humidifier of the present invention, the humidifying liquid can enter the mixing section of the first channel through the annular cavity and centrifugal flow channel in the second channel, and then, driven by the gas entering from the opening end of the mixing section, it passes through the convergence section and the transition section to enter the atomization section. At this time, the humidifying liquid is atomized under the action of gas shearing, so that the centrifugal humidifier of the present invention can atomize different humidifying liquids and make the humidifying liquid atomized more fully, thereby expanding the scope of application of the present invention for humidifying liquids.

[0018] According to the airway humidification device of the present invention, because the centrifugal flow channel is uniformly arranged circumferentially between the annular cavity and the mixing section, and the centrifugal flow channel is arranged along the tangential direction of the mixing section, the humidifying liquid can enter the mixing section more uniformly through the centrifugal flow channel. Furthermore, the humidifying liquid, driven by the gas, rotates and exits from the transition section, then diffuses and atomizes in a large-angle conical surface, allowing the atomized humidifying liquid to cover the entire cross-section of the artificial airway, thereby achieving uniform humidification. In addition, the infusion unit can input the required amount of humidifying liquid into the centrifugal humidification element as needed, thus easily controlling the amount of humidifying liquid used and reducing the residual volume of the humidifying liquid after atomization. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the airway humidification device in an embodiment of the present invention;

[0020] Figure 2 This is a partial cross-sectional view of the airway humidification device in an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the centrifugal humidification component from a first perspective in an embodiment of the present invention;

[0022] Figure 4 This is a cross-sectional view of the centrifugal humidification component from a second perspective in an embodiment of the present invention.

[0023] 10. Centrifugal humidification component; 11. First channel; 111. Mixing section; 1111. Air inlet; 112. Converging section; 113. Transition section; 114. Atomizing section; 1141. Air outlet; 12. Second channel; 121. Annular cavity; 1211. Liquid inlet; 122. Centrifugal flow channel; 20. Gas delivery unit; 21. Ventilation hose; 30. Liquid delivery unit; 31. Liquid supply device; 32. Humidification liquid hose; 40. Heating mechanism; 41. Heating tube; A. Artificial air tube. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the following embodiments are described in detail with reference to the accompanying drawings.

[0025] Example

[0026] Figure 1 A schematic diagram of the airway humidification device in an embodiment of the present invention. Figure 2 This is a partial cross-sectional view of the airway humidification device in an embodiment of the present invention.

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides an airway humidification device that can humidify input gas and deliver it into an artificial airway, including: a centrifugal humidification element 10, a gas delivery unit 20, a liquid delivery unit 30, and a heating mechanism 40.

[0028] Figure 3 This is a cross-sectional view of the centrifugal humidification component from a first perspective in an embodiment of the present invention. Figure 4 This is a cross-sectional view of the centrifugal humidification component from a second perspective in an embodiment of the present invention.

[0029] like Figure 3 and Figure 4 As shown, the centrifugal humidification element 10 includes a first channel 11 and a second channel 12.

[0030] The first channel 11 includes a mixing section 111, a converging section 112, a transition section 113, and an atomizing section 114 connected sequentially along the axial direction. The second channel 12 includes an annular cavity 121 and multiple centrifugal channels 122. The opening end of the mixing section 111 is an air inlet 1111 for gas entry. The opening end of the atomizing section 114 is an air outlet 1141 for gas exit. The annular cavity 121 is located around the mixing section 111 and has an inlet 1211 for humidifying liquid entry. The two ends of each centrifugal channel 122 are connected to the annular cavity 121 and the mixing section 111, respectively. During operation, the gas delivery unit 20 can input gas into the mixing section 111 in the first channel 11 through the air inlet 1111. The infusion unit 30 can input humidifying liquid into the annular cavity 121 in the second channel 12 through the inlet 1211. Then, the humidifying liquid in the annular cavity 121 will enter the mixing section 111 through multiple centrifugal channels 122, so that the humidifying liquid and gas come into contact with each other in the mixing section 111. Then, the gas carries the humidifying liquid through the convergence section 112 and the transition section 113 in sequence and enters the atomization section 114, where the humidifying liquid is atomized. Finally, the gas carries the atomized humidifying liquid into the artificial airway through the outlet 1141.

[0031] In this embodiment, the mixing section 111 is cylindrical and coaxially arranged with the annular cavity 121. Multiple centrifugal channels 122 are evenly distributed circumferentially between the annular cavity 121 and the mixing section 111, so that when the humidifying liquid in the annular cavity 121 flows into the mixing section 111 through the multiple centrifugal channels 122, it can enter the mixing section 111 more evenly, thereby enabling the humidifying liquid to contact the gas more evenly, and thus making the driving effect of the gas on the humidifying liquid more balanced.

[0032] In this embodiment, each centrifugal channel 122 is arranged tangentially to the cross-section of the mixing section 111. The preferred inclination angle between the axis of the centrifugal channel 122 and the axis of the annular cavity 121 is 65°–80°, and the preferred tangential angle between the axis of the centrifugal channel 122 and the cross-section of the mixing section 111 is 75°–90°. This allows the humidifying liquid entering the mixing section 111 through the centrifugal channel 122 to possess an angular velocity. The humidifying liquid, possessing this angular velocity, uniformly enters the mixing section 111 and, driven by the gas within the mixing section 111, rotates and moves along the inner wall of the mixing section 111. This causes the humidifying liquid within the mixing section 111 to surround the gas, thereby completing the mixing of the gas and the humidifying liquid.

[0033] In this embodiment, the converging section 112 is truncated cone-shaped, and its larger diameter end is connected to the mixing section 111. During operation, because the larger diameter end of the converging section 112 is connected to the mixing section 111, the humidifying liquid that is rotating and moving along the inner wall of the mixing section 111 will continue to rotate and move along the inner wall of the converging section 112. Furthermore, because the converging section 112 is truncated cone-shaped, the humidifying liquid and gas entering the converging section 112 will gradually merge as the cross-sectional area of ​​the converging section 112 decreases, thereby allowing the humidifying liquid to better surround the gas.

[0034] In this embodiment, the transition section 113 is cylindrical, with one end connected to the small-diameter end of the converging section 112 and the other end connected to the atomizing section 114. The dimensions of the transition section 113 are standard design dimensions. During operation, because one end of the transition section 113 is connected to the small-diameter end of the converging section 112, the cross-sectional dimension of the transition section 113 is smaller than the cross-sectional dimensions of the mixing section 111 and the converging section 112, thus enabling the transition section 113 to form an air core between the gas and the humidifying liquid. Furthermore, because the other end of the transition section 113 is connected to the atomizing section 114, the humidifying liquid, driven by the gas, will continue to move along the inner wall of the transition section 113 towards the atomizing section 114.

[0035] In this embodiment, the air outlet 1141 can be connected to the artificial airway. The size of the air outlet 1141 is smaller than the size of the artificial airway, and the end face dimensions at both ends of the atomizing section 114 are larger than the end face dimensions at the other end of the transition section 113. During operation, because the end face dimensions at both ends of the atomizing section 114 are larger than the end face dimensions at the other end of the transition section 113, when the humidifying liquid and gas enter the atomizing section 114 through the transition section 113, the gas and humidifying liquid are no longer affected by the inner wall of the transition section 113. Furthermore, because the transition section 113 can create an air core between the gas and the humidifying liquid, the gas is ejected from the transition section 113 into the atomizing section 114. The gas then shears the humidifying liquid surrounding it, causing the humidifying liquid to break up and atomize, forming small mist particles, thus achieving the first atomization. In this process, because the humidifying liquid is carried by the gas from the transition section 113 into the atomization section 114 while maintaining a rotating state, it can diffuse and atomize at a large angle in a conical shape when ejected from the transition section 113. This allows the atomized humidifying liquid to cover the entire cross-section of the artificial airway, achieving uniform humidification. Furthermore, because the outlet 1141 connects to the artificial airway, and its size is smaller than that of the artificial airway, the gas further breaks up the atomized humidifying liquid, forming smaller droplets for a second atomization. Simultaneously, due to the pressure difference between the atomization section 114 and the artificial airway, and the velocity gradient of the humidifying liquid, flash evaporation occurs during the second atomization process, enhancing the mixing of the gas and humidifying liquid after the second atomization. This double atomization process ensures more complete atomization of the humidifying liquid.

[0036] like Figure 1 and Figure 2 As shown, the gas delivery unit 20 includes a gas supply device and a ventilation hose 21. The gas supply device can be a device such as an air pump or gas cylinder that can input gas into the ventilation hose 21. In this embodiment, the gas supply device is preferably an air pump. One end of the ventilation hose 21 is connected to the gas outlet of the gas supply device, and the other end is connected to the air inlet 1111. During operation, the gas supply device can input gas into the mixing section 111 through the ventilation hose 21. The gas entering the mixing section 111 then sequentially enters the convergence section 112, the transition section 113, and the atomization section 114. Finally, the gas is humidified and enters the artificial airway.

[0037] The infusion unit 30 includes a supply device 31 and a humidifying fluid hose 32. The supply device 31 can be a syringe pump or an infusion pump capable of metered or non-metered supply, which can introduce humidifying fluid into the humidifying fluid hose 32. In this embodiment, the supply device 31 is preferably a syringe pump, which allows for easy control of the amount of humidifying fluid used and reduces the residual volume after atomization. One end of the humidifying fluid hose 32 is connected to the outlet of the supply device 31, and the other end is connected to the inlet 1211. During operation, the supply device 31 introduces humidifying fluid into the humidifying fluid hose 32, and then the humidifying fluid in the hose 32 enters the annular cavity 121 through the inlet 1211. After entering the annular cavity 121, the humidifying fluid passes through the centrifugal channel 122 into the mixing section 111, where it mixes with the gas. Next, the humidifying liquid, after entering the mixing section 111, will pass through the convergence section 112 and the transition section 113 in sequence under the influence of the gas. Finally, the gas carries the humidifying liquid to achieve the first atomization in the atomization section 114, and the gas carries the humidifying liquid to achieve the second atomization as it enters the artificial airway in the atomization section 114.

[0038] like Figure 1 and Figure 2 As shown, a heating mechanism 40 is provided on the ventilation hose 21 and the humidification fluid hose 32. In this embodiment, the heating mechanism 40 includes a heater and a heating pipe 41. The heating pipe 41 is connected to the heater and wound around the ventilation hose 21 and the humidification fluid hose 32. During operation, because the heater can heat the gas and humidification fluid in the ventilation hose 21 and the humidification fluid hose 32 through the heating pipe 41, the produced humidified gas reaches a suitable humidity at a suitable temperature, thereby preventing patients from feeling uncomfortable due to inhaling unsuitable humidified air, thus improving the practical effect of the present invention.

[0039] The gas humidification process of the airway humidification device of the present invention is as follows: First, the operator inputs gas and humidifying liquid into the ventilation hose 21 and humidifying liquid hose 32 respectively through the gas supply device and the liquid supply device 31. Then, the gas enters the mixing section 111 through the air inlet 1111, while the humidifying liquid enters the mixing section 111 through the liquid inlet 1211, the annular cavity 121, and the centrifugal flow channel 122. Because each centrifugal flow channel 122 is arranged tangentially to the cross-section of the mixing section 111, the humidifying liquid entering the mixing section 111 through the centrifugal flow channel 122 possesses an angular velocity. Then, the humidifying liquid with angular velocity moves along the inner wall of the mixing section 111 under the influence of the gas, causing the humidifying liquid in the mixing section 111 to surround the gas. Next, as the gas carries the humidifying liquid into the converging section 112, the humidifying liquid and gas within the converging section 112 gradually merge as the cross-sectional area of ​​the converging section 112 decreases, allowing the humidifying liquid to better surround the gas. Then, when the merged gas and humidifying liquid enter the transition section 113, the transition section 113 creates an air core between the gas and humidifying liquid. Then, as the gas carries the humidifying liquid into the atomizing section 114, the gas shears the humidifying liquid surrounding it, causing the humidifying liquid to break up and atomize into small mist particles, achieving the first atomization. Because the humidifying liquid remains in a rotating state when the gas carries it from the transition section 113 to the atomizing section 114, the humidifying liquid can diffuse and atomize at a large angle cone when it is ejected from the transition section 113, allowing the atomized humidifying liquid to cover the entire cross-section of the artificial airway. Finally, when the gas and the humidified liquid from the first atomization enter the artificial airway through the atomization section 114, the gas further breaks up the humidified liquid, forming smaller mist particles, thus achieving a second atomization. Furthermore, due to the pressure difference between the atomization section 114 and the artificial airway, and the velocity gradient of the humidified liquid, flash evaporation occurs during the second atomization process, enhancing the mixing effect of the gas and humidified liquid after the second atomization.

[0040] The role and effect of the embodiments

[0041] According to the centrifugal humidifier and airway humidification device involved in this embodiment, the humidifying liquid can enter the mixing section in the first channel through the annular cavity and centrifugal flow channel in the second channel. Then, driven by the gas entering from the opening end of the mixing section, it passes through the convergence section and transition section and enters the atomization section. At this time, the humidifying liquid is atomized under the shearing action of the gas, which enables the centrifugal humidifier of the present invention to atomize different humidifying liquids and make the humidifying liquid atomized more fully, thereby expanding the applicability of the present invention to humidifying liquids. Furthermore, because the centrifugal flow channel is circumferentially uniformly arranged between the annular cavity and the mixing section and is arranged along the tangential direction of the mixing section, the humidifying liquid can enter the mixing section more evenly through the centrifugal flow channel. Moreover, after the humidifying liquid rotates out of the transition section under the drive of the gas, it diffuses and atomizes with a large-angle conical surface, so that the atomized humidifying liquid can cover the entire cross-section of the artificial airway, thereby achieving the purpose of uniform humidification.

[0042] According to the centrifugal humidification component involved in this embodiment, because the mixing section is cylindrical and coaxially arranged with the annular cavity, multiple centrifugal channels are evenly arranged circumferentially between the annular cavity and the mixing section. This allows the humidifying liquid in the annular cavity to enter the mixing section more evenly when flowing into the mixing section through the multiple centrifugal channels, thereby enabling the humidifying liquid to contact the gas more evenly, and thus making the driving effect of the gas on the humidifying liquid more balanced.

[0043] According to the centrifugal humidification component involved in this embodiment, since the axis of each centrifugal channel is inclined to the axis of the annular cavity, and each centrifugal channel is arranged along the tangential direction of the cross-section of the mixing section, the humidifying liquid entering the mixing section through the centrifugal channel can have an angular velocity. Then, the humidifying liquid with an angular velocity enters the mixing section uniformly and moves along the inner wall of the mixing section under the drive of the gas in the mixing section, thereby making the humidifying liquid in the mixing section surround the gas, thus completing the mixing of gas and humidifying liquid.

[0044] According to the centrifugal humidification component involved in this embodiment, since the converging section is truncated cone-shaped, the humidification liquid and gas entering the converging section will gradually merge as the cross-sectional area of ​​the converging section decreases, thereby enabling the humidification liquid to better surround the gas.

[0045] According to the centrifugal humidifier involved in this embodiment, because the cross-sectional size of the transition section is smaller than that of the mixing section and the convergence section, the transition section can enable an air core state to be formed between the gas and the humidifying liquid.

[0046] According to the centrifugal humidifying component involved in this embodiment, since the end face dimensions at both ends of the atomizing section are larger than the end face dimensions at the other end of the transition section, when the humidifying liquid and gas enter the atomizing section through the transition section, the gas and humidifying liquid will no longer be affected by the inner wall of the transition section. As a result, the gas will be injected from the transition section into the atomizing section, and then the gas will shear the humidifying liquid surrounding it, thereby breaking the humidifying liquid into atomization and forming small mist particles, thus achieving the first atomization.

[0047] According to the centrifugal humidifier involved in this embodiment, because the size of the air outlet is smaller than the size of the artificial airway, the gas will break up the humidifier liquid after the first atomization again, thereby forming mist particles with smaller particle size and realizing a second atomization.

[0048] According to the centrifugal humidifier involved in this embodiment, due to the pressure difference between the atomizing section and the artificial airway and the velocity gradient of the humidifying liquid, the humidifying liquid undergoes flash evaporation during the second atomization process, thereby enhancing the mixing effect of the gas and the humidifying liquid after the second atomization, and thus making the atomization of the humidifying liquid more complete through the two atomizations.

[0049] According to the airway humidification device involved in this embodiment, since the liquid supply device is an injection pump, it is easy to control the amount of humidification liquid used and reduce the residual volume of humidification liquid after atomization.

[0050] According to the airway humidification device involved in this embodiment, because the heating mechanism can heat the gas and humidification liquid in the ventilation hose and humidification liquid hose, the humidified gas produced reaches a suitable humidity at a suitable temperature, thereby preventing patients from feeling uncomfortable due to inhaling unsuitable humidified air, thus improving the practical effect of the present invention.

[0051] The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A centrifugal humidification element, characterized in that, Used to atomize humidifying liquid through gas shearing, including: The first channel includes a mixing section, a converging section, a transition section, and an atomizing section connected sequentially along the axial direction. The opening end of the mixing section is an air inlet for gas entry, and the opening end of the atomizing section is an air outlet for gas exit. The air outlet is used to connect to an artificial airway, and the size of the air outlet is smaller than the size of the artificial airway. The second channel includes an annular cavity and multiple centrifugal channels. The annular cavity is disposed on the periphery of the mixing section and has an inlet for the humidifying liquid to enter. The multiple centrifugal channels are distributed circumferentially between the annular cavity and the mixing section. The two ends of each centrifugal channel are respectively connected to the annular cavity and the mixing section, and each centrifugal channel is arranged along the tangential direction of the cross-section of the mixing section. The mixing section is used to mix the gas with the humidifying liquid. The converging section reduces the cross-sectional area to facilitate the merging of the mixed gas and humidifying liquid. The transition section is used to allow the converging gas and humidifying liquid to transition into the atomizing section. The atomizing section is used to diffuse and atomize the humidified liquid subjected to gas shearing in a large-angle conical surface.

2. The centrifugal humidification element according to claim 1, characterized in that: in, The mixing section is cylindrical and is coaxially arranged with the annular cavity.

3. The centrifugal humidification element according to claim 2, characterized in that: in, Multiple centrifugal channels are evenly distributed circumferentially between the annular cavity and the mixing section.

4. The centrifugal humidification element according to claim 1, characterized in that: in, The converging section is shaped like a frustum of a cone, and its large-diameter end is connected to the mixing section. The transition section is cylindrical, with one end connected to the small-diameter end of the converging section and the other end connected to the atomizing section.

5. An airway humidification device for humidifying input gas and delivering it into an artificial airway, characterized in that: Includes the centrifugal humidification element as described in any one of claims 1 to 4.

6. The airway humidification device according to claim 5, characterized in that: in, It also includes a gas delivery unit and an infusion unit. The gas delivery unit is used to input gas into the centrifugal humidification element. The gas delivery unit includes a gas supply device and a vent hose. One end of the vent hose is connected to the gas supply device, and the other end is connected to the air inlet. The infusion unit is used to input humidifying liquid into the centrifugal humidifying element. The infusion unit includes a liquid supply device and a humidifying liquid hose. One end of the humidifying liquid hose is connected to the liquid supply device, and the other end is connected to the liquid inlet.

7. The airway humidification device according to claim 6, characterized in that: in, Both the ventilation hose and the humidifying liquid hose are equipped with heating mechanisms.

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