Humidifying tank of breathing machine

Abstract

The invention discloses a breathing machine humidifying tank. The breathing machine humidifying tank comprises a base; the humidifying tank body is detachably arranged on the base to form a containing cavity for containing humidifying liquid, and the humidifying tank body comprises a mounting hole formed in the upper end part and a connecting part arranged on the surface; the liquid level detector comprises a detection end and a display, the detection end is arranged on the mounting hole and extends into the bottom of the accommodating cavity, and the display is arranged on the connecting part; the alarm is arranged on the display; the height of the humidifying liquid in the containing cavity is detected through the liquid level detector, and an alarm is given out through the alarm when the humidifying liquid is too much or too little.

Description

Technical Field

[0001] This invention relates to the field of humidifier technology, and more specifically to a humidifier for a ventilator. Background Technology

[0002] In mechanical ventilation, the humidifier is a core component, its main function being to heat and humidify the dry air entering the patient's airway, making it meet the body's physiological needs and preventing problems such as mucosal damage, thickened secretions, and difficulty in expectoration caused by dry air directly entering the airway. The humidifier typically contains purified or distilled water as the humidifying fluid, which is evaporated by heating, thereby humidifying the air flowing through the container. However, existing humidifiers have significant deficiencies in monitoring the humidifying fluid level. The humidifying fluid level directly affects the humidification effect and safety: if the humidifying fluid is too low, insufficient steam cannot be provided, resulting in inadequate gas humidification, affecting the treatment effect and potentially damaging the patient's airway; conversely, if there is too much humidifying fluid, during the ventilator's delivery of air, excess liquid may be carried by the high-speed airflow, forming droplets or water mist that enter the patient's airway, causing choking, aspiration, or even serious complications such as lung infection. Currently, clinical practice mainly relies on medical staff to manually check and replenish humidifiers by observing simple markings on the humidifier or based on experience. This method is not only unreliable in real-time and labor-intensive, but also easily overlooked at night or when medical staff are busy. If the humidifier level exceeds the safe range (too much or too little), there will be no timely warning or intervention, directly threatening the patient's respiratory safety and treatment effectiveness. Therefore, there is an urgent need to develop a ventilator humidifier that can automatically, in real-time, and accurately monitor the humidifier level and issue timely alarms, which is crucial for improving the safety, reliability, and intelligence of ventilator use. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a humidifier canister for a ventilator, which uses a liquid level detector to detect the level of humidifier liquid in the containment chamber. If the level is too high or too low, an alarm will be triggered.

[0004] The present invention adopts the following technical solution: A humidifier canister for a ventilator, comprising: Base; The humidification tank body is detachably mounted on the base to form a receiving cavity for containing humidification liquid, including a mounting hole at the upper end and a connecting part on the surface; A liquid level detector includes a detection end and a display. The detection end is disposed on a mounting hole and extends into the bottom of a receiving cavity, and the display is disposed on a connecting part. An alarm is installed on the monitor; The detection end of the liquid level detector extends into the bottom of the receiving cavity, enabling real-time and continuous monitoring of the humidification liquid level and displaying the liquid level information intuitively on the display screen. When the liquid level is too high or too low and exceeds the preset safety range, the alarm will immediately issue an audible and visual alarm to remind medical staff to handle the situation in a timely manner, effectively solving the safety hazards of traditional humidification tanks that rely on manual observation, have poor real-time performance, and are prone to errors.

[0005] Preferably, the connecting part includes a connecting part body and a magnetic suction part located on the connecting part body, and a magnetic suction piece matching the magnetic suction part is provided at a corresponding position on the display; the display and the humidification tank body can be quickly installed and removed by magnetic attraction, which facilitates the replacement, maintenance or cleaning of the display, while the connection is stable and reliable.

[0006] Preferably, the connecting part body is provided with a mounting groove, and the corresponding position on the display is provided with a mounting post that matches the mounting groove; the cooperation between the mounting post and the mounting groove provides physical positioning and auxiliary fixation, and works in conjunction with the magnetic attraction structure to ensure that the display is installed in an accurate position and prevent the display from shifting or falling off due to shaking or external force.

[0007] Preferably, the end of the mounting post is provided with a guide surface; the guide surface guides the mounting post to slide easily and accurately into the mounting groove, which simplifies the installation operation, improves the assembly efficiency, and reduces scratch damage to the magnetic part or the mounting groove during the installation process.

[0008] Preferably, the base includes a chassis and an annular protrusion on the chassis, the annular protrusion having an annular groove; the bottom of the humidification tank body can be attached to the outside of the annular protrusion, and the annular groove provides installation space for possible sealing structures, which helps to enhance the connection and sealing between the humidification tank body and the base, and prevent air leakage or liquid leakage.

[0009] Preferably, a sealing ring is provided on the annular groove; the sealing ring fills the space between the bottom of the humidification tank body and the annular protrusion to form a reliable seal, ensuring the airtightness of the humidification tank during operation, preventing the leakage of humidification vapor or the entry of external air, and ensuring the stability of the humidification effect and the safety of gas delivery; at the same time, the sealing ring provides a certain static friction force to prevent the humidification tank body from detaching from the base during normal use.

[0010] Preferably, the chassis and the annular protrusion are made of thermally conductive metal. The metal base has good thermal conductivity, which can quickly and evenly transfer the heat generated by the heating element (usually located inside the ventilator main unit and in contact with the base) to the humidification tank body and the internal humidification liquid, thereby improving heating efficiency and ensuring uniform and stable humidification effect.

[0011] Preferably, the humidifier body is provided with an air inlet for connecting to the ventilator's air inlet pipe, an air outlet for connecting to the air outlet pipe, and a liquid inlet for connecting to the humidifier bottle; the connection interface between the humidifier and other parts of the ventilator system is clearly defined, the air inlet and air outlet ensure unobstructed gas path, and the liquid inlet facilitates the addition of humidifying liquid into the receiving cavity.

[0012] Preferably, the humidification tank body is made of transparent material and has scales on its surface. Medical staff can directly observe the consumption of the humidification fluid inside the transparent tank. The scales on the surface provide an intuitive reference for the liquid level and serve as an auxiliary verification for electronic liquid level detection, thereby improving the reliability and convenience of use.

[0013] Preferably, a sealing rubber is provided between the inner wall of the mounting hole and the detection end. The sealing rubber effectively seals the gap between the mounting hole and the detection end, preventing the humidification liquid vapor or liquid from leaking from the mounting hole, ensuring the airtightness of the internal environment of the humidification tank, and protecting the level detector from moisture corrosion.

[0014] Compared with the prior art, the present invention has the following advantages: (1) By integrating a liquid level detector and an alarm, automatic and real-time monitoring and alarm of the humidifying liquid level are realized, which greatly improves the safety and intelligence of the ventilator. (2) The monitor is fixed by a combination of magnetic attraction and card slot, which realizes quick disassembly and assembly and stable connection, and facilitates maintenance; (3) The base is made of thermally conductive metal and has a sealed structure, which ensures efficient heating performance and reliable airtightness; (4) The transparent tank and scale design provide an intuitive manual observation window, forming a double guarantee with electronic detection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the humidifier tank of a ventilator.

[0016] Figure 2 This is a partial structural diagram of the humidifier tank of a ventilator.

[0017] Figure 3 This is a structural diagram of the base.

[0018] Figure 4 This is a schematic diagram of the liquid level detector.

[0019] Figure 5 This is a schematic diagram of the display's structure.

[0020] In the figure, the components are: base 1, chassis 1-1, annular protrusion 1-2, annular groove 1-3; humidification tank body 2, mounting hole 2-1, connecting part 2-2, connecting part body 2-2-1, magnetic suction part 2-2-2, mounting groove 2-2-3, air inlet 2-3, air outlet 2-4, liquid inlet 2-5; liquid level detector 3, detection end 3-1, display 3-2, magnetic suction plate 3-2-1, mounting column 3-2-2, guide surface 3-2-3; alarm 4; sealing ring 5. Detailed Implementation

[0021] To facilitate understanding of the technical solution of the present invention, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1-5 As shown, a humidifier canister for a ventilator includes a base 1, a humidifier body 2, a liquid level detector 3, and an alarm 4. The humidifier body 2 is detachably mounted on the base 1, and the two together form a cavity for containing humidifying fluid. The upper end of the humidifier body 2 has a mounting hole 2-1, and its surface has a connecting portion 2-2. The liquid level detector 3 includes a detection end 3-1 and a display 3-2. The detection end 3-1 is mounted on the mounting hole 2-1 and extends downward into the bottom of the cavity for real-time detection of the liquid level. The display 3-2 is mounted on the connecting portion 2-2 for visually displaying the current liquid level information. The alarm 4 is mounted on the display 3-2. In this structure, the detection end 3-1 continuously monitors the liquid level in the cavity and transmits the signal to the display 3-2 and the integrated control unit. Simultaneously, through a preset program, when the liquid level exceeds the maximum safety threshold (too high) or falls below the minimum safety threshold (too low), the alarm 4 is immediately triggered to issue an audible and visual alarm. This design transforms the originally passive, manual liquid level monitoring into active, continuous electronic monitoring and early warning, fundamentally solving the respiratory safety hazards caused by uncontrolled liquid levels and achieving an inherent safety improvement in the use of humidification tanks.

[0023] The connecting part 2-2 includes a connecting part body 2-2-1 and a magnetic suction part 2-2-2 located on the connecting part body 2-2-1. A magnetic suction piece 3-2-1 matching the magnetic suction part 2-2-2 is provided at a corresponding position on the display 3-2. In this structure, the magnetic force between the magnetic suction part 2-2-2 and the magnetic suction piece 3-2-1 allows the display 3-2 to be quickly and tool-free attached to the surface of the humidification tank body 2. Simultaneously, this non-rigid connection method allows the display 3-2 to be easily removed when the battery needs to be replaced, the display repaired, or the humidification tank deeply cleaned, greatly improving the maintainability of the device and the user experience.

[0024] In addition, the alarm 4 can be set to sound an alarm when the battery power is too low. The alarm tone can be set to be different from the alarm for abnormal liquid level to prevent medical staff from misjudging the situation.

[0025] The connecting body 2-2-1 is provided with a mounting groove 2-2-3, and the display 3-2 is provided with a mounting post 3-2-2 at a corresponding position that matches the mounting groove 2-2-3. In this structure, the mounting post 3-2-2 is inserted into the mounting groove 2-2-3, providing precise physical positioning and auxiliary limiting before or after magnetic fixation; at the same time, through this combination of mechanical fitting and magnetic fixation, a dual fixing mechanism is formed, which makes the display 3-2 remain stable even when subjected to accidental impact or vibration, effectively preventing it from accidentally falling off the humidification tank body 2, and ensuring the continuous reliability of monitoring and alarm functions.

[0026] Preferably, the end of the mounting post 3-2-2 is provided with a guide surface 3-2-3. In this structure, the guide surface 3-2-3 (such as a slope or arc surface) allows the mounting post 3-2-2 to be smoothly inserted when it approaches the mounting groove 2-2-3; at the same time, by guiding the mounting post 3-2-2 to accurately align and slide into the mounting groove 2-2-3, the installation operation is simplified, and assembly can be completed quickly even without direct vision, improving assembly efficiency and reducing the risk of component damage due to misalignment.

[0027] The base 1 includes a chassis 1-1 and an annular protrusion 1-2 located on the chassis 1-1, with an annular groove 1-3 on the annular protrusion 1-2. In this structure, the bottom of the humidification tank body 2 rests on the chassis 1-1, with its lower edge abutting the outside of the annular protrusion 1-2, improving the stability of placement. At the same time, the design of the annular groove 1-3 provides a standard installation position for sealing elements that may be added later, giving the base 1 good versatility and expandability, making it easy to match different sealing schemes according to different models of humidification tank bodies 2.

[0028] Preferably, a sealing ring 5 is provided on the annular groove 1-3. In this structure, the sealing ring 5 (e.g., a silicone O-ring) is pressed between the bottom of the humidifier body 2 and the annular groove 1-3 of the annular protrusion 1-2, forming an elastic sealing barrier; at the same time, the deformation of the sealing ring 5 fills the microscopic gaps, ensuring that gas will not leak from the joint between the humidifier body and the base during negative or positive pressure ventilation, thus ensuring the integrity and airtightness of the humidification gas circuit system. This is crucial for maintaining preset respiratory parameters such as inspiratory tidal volume and positive end-expiratory pressure.

[0029] Preferably, the chassis 1-1 and the annular protrusion 1-2 are made of thermally conductive metal (e.g., aluminum alloy). In this structure, when the metal base 1 is in close contact with the heating plate inside the ventilator main unit, it can efficiently conduct heat to the entire base; at the same time, through its good thermal conductivity, heat is evenly and quickly transferred to the bottom of the humidification tank body 2 and the humidification liquid inside, reducing heat loss, improving heating response speed and energy efficiency ratio, and ensuring stable output of humidified steam.

[0030] The humidifier body 2 is equipped with an air inlet 2-3 for connecting to the ventilator's air inlet tube, an air outlet 2-4 for connecting to the air outlet tube, and a liquid inlet 2-5 for connecting to the humidifier bottle. In this structure, dry medical gas enters the receiving cavity through the air inlet 2-3, flows over the surface of the heated humidifying liquid or around the internal heating rod, carries water vapor and becomes humidified gas, and is then delivered to the patient through the air outlet 2-4; at the same time, through the liquid inlet 2-5 (usually connected to an independent humidifying water bottle), the humidifying liquid can be conveniently and hygienically replenished without opening the humidifier body 2, forming a complete, efficient and easy-to-operate humidification gas and liquid circuit system.

[0031] Preferably, the humidification tank body 2 is made of transparent material and has graduations on its surface. In this structure, the transparent tank allows medical staff to directly and clearly observe the remaining amount, color, and presence of sediment in the humidification liquid from the outside; at the same time, by combining the graduations printed on the surface, a rough liquid level reference value can be provided, which can be cross-verified with the reading of the electronic liquid level detector 3, forming a dual safety guarantee mechanism of "electronic monitoring + manual verification", further enhancing the reliability of clinical use and the subjective control of medical staff.

[0032] Preferably, the humidification tank body 2 can be for single use or can be repeatedly sterilized. When the humidification tank body 2 is reusable after sterilization, the material of the humidification tank body 2 can be polysulfone resin; in addition, the detection end 3-1 of the liquid level detector 3 that extends into the humidification tank body 2 is made of a sterilizable material, such as common medical metals like titanium alloy, stainless steel, or cobalt-chromium alloy, to facilitate sterilization after use. The sterilization method can be high-pressure steam sterilization, chemical disinfectant immersion, or ultraviolet irradiation. The detection end 3-1 made of the above-mentioned materials will not be damaged after multiple sterilizations and can be reused.

[0033] Preferably, a sealing rubber is provided between the inner wall of the mounting hole 2-1 and the detection end 3-1. In this structure, the sealing rubber (such as a silicone sealing sleeve) tightly wraps around the outside of the rod of the detection end 3-1 and presses against the inner wall of the mounting hole 2-1; at the same time, through its elastic sealing properties, it completely blocks the path of warm and humid water vapor inside the humidification tank to escape upward along the detection end 3-1, which not only prevents the accumulation of condensate and cross-contamination that may be caused by steam leakage, but also protects the precision electronic components inside the level detector 3 from moisture corrosion and extends its service life.

[0034] In some embodiments, the liquid level detector 3 may use a capacitive, ultrasonic, or optical liquid level sensor as the detection end 3-1. The alarm 4 may integrate an audible alarm unit (such as a buzzer) and a visual alarm unit (such as an LED indicator), and may set different alarm tones and light colors according to whether the liquid level is too high or too low (such as continuous red light when too high, and flashing yellow light when too low).

[0035] Referring to the accompanying drawings, the working principle of this invention is as follows: In use, the humidifier body 2 is placed on the preheated base 1, and an appropriate amount of humidifying liquid is added to the receiving cavity through the inlet 2-5. The detection end 3-1 of the level detector 3 extends below the liquid surface from the mounting hole 2-1, detects the liquid level in real time, and converts it into an electrical signal, which is displayed in real time on the display 3-2. When the ventilator is working, dry gas enters through the air inlet 2-3, is humidified by the heated and evaporated humidifying liquid, and is then sent out through the air outlet 2-4. If the humidifying liquid level falls below the preset lower limit due to consumption, or exceeds the preset upper limit due to accidental addition, the signal from the level detector 3 triggers the alarm 4 to immediately issue an audible and visual alarm. Therefore, this invention, through an integrated level detection and alarm system, realizes automatic, real-time monitoring and safety warning of the humidifying liquid level in the ventilator humidifier. The core purpose is to fundamentally solve the technical problem of affecting patient respiratory safety and treatment effectiveness due to uncontrolled humidifying liquid level (too much or too little).

[0036] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention shall be determined by the scope defined in the claims. Any improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be considered as within the scope of protection of the present invention.

Claims

1. A humidifier tank for a breathing machine, characterized in that, The utility model relates to a wetting tank, which comprises a base (1), a wetting tank body (2) detachably arranged on the base (1) and forming a containing cavity containing wetting liquid, the wetting tank body (2) comprising a mounting hole (2-1) arranged at an upper end and a connecting part (2-2) arranged on a surface, a liquid level detector (3) comprising a detection end (3-1) and a display (3-2), the detection end (3-1) being arranged on the mounting hole (2-1) and extending into the bottom of the containing cavity, and the display (3-2) being arranged on the connecting part (2-2), and an alarm (4) arranged on the display (3-2). The connecting part (2-2) comprises a connecting part body (2-2-1) and a magnetic attraction part (2-2-2) arranged on the connecting part body (2-2-1), and the display (3-2) is provided with a magnetic attraction piece (3-2-1) corresponding to the magnetic attraction part (2-2-2). The connecting part body (2-2-1) is provided with a mounting groove (2-2-3), and the display (3-2) is provided with a mounting column (3-2-2) corresponding to the mounting groove (2-2-3). The mounting column (3-2-2) is provided with a guide surface (3-2-3) at an end. The base (1) comprises a base plate (1-1) and an annular protrusion (1-2) arranged on the base plate (1-1), and the annular protrusion (1-2) is provided with an annular groove (1-3).

2. The humidifier tank of claim 1, wherein, The annular groove (1-3) is provided with a sealing ring (5).

3. The humidifier tank of claim 2, wherein, The base plate (1-1) and the annular protrusion (1-2) are made of heat-conducting metal materials.

4. The humidifier tank of claim 3, wherein, The wetting tank body (2) is provided with an air inlet hole (2-3) connected with an air inlet pipe of a breathing machine, an air outlet hole (2-4) connected with an air outlet pipe, and a liquid inlet (2-5) connected with a wetting bottle.

5. The humidifier tank of claim 1, wherein, The wetting tank body (2) is made of transparent material and is provided with a scale on the surface.

6. The humidifier tank of claim 5, wherein, A sealing rubber is arranged between the inner wall of the mounting hole (2-1) and the detection end (3-1).

7. The humidifier tank of claim 1, wherein, ​ 8. The humidifier tank of claim 1, wherein, ​ 9. The humidifier tank of claim 1, wherein, ​ 10. The humidifier tank of claim 1, wherein, ​

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