Intensive care unit patient airway humidification accurate regulation and control device

Abstract

The invention relates to the technical field of medical breathing equipment, and discloses an intensive care unit patient airway humidification precise regulation and control device which comprises a host, a heating disc is arranged at the top of the host, and a cooling mechanism is installed at the bottom of the heating disc and used for being matched with a control module in the host to actively cool and regulate and control the temperature of the heating disc. A heat dissipation mechanism is mounted in the host and is used for dissipating heat transferred by the cooling mechanism; the cooling mechanism comprises a semiconductor chilling plate, the top cold face of the semiconductor chilling plate is fixedly connected to the bottom of the heating disc, the bottom hot face of the semiconductor chilling plate is fixedly connected with a vapor chamber, and the bottom of the vapor chamber is fixedly connected with cooling fins. A bunching mechanism is installed in the middle of the main machine. According to the invention, through active and accurate temperature control, convenient cable management and flexible screen adjustment functions, the safety of airway humidification treatment, the convenience of clinical use and the man-machine interaction experience are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical breathing equipment, in particular to a precise control device for airway humidification of patients in intensive care units. BACKGROUND

[0002] For patients receiving mechanical ventilation treatment in intensive care units, sufficient heating and humidification of the inhaled gas is a key clinical measure to maintain airway function and prevent complications. For this reason, respiratory humidifiers are widely used in clinical practice, which usually use a heating disc to heat the water stored in the humidification tank, so that the dry gas delivered by the ventilator becomes warm and humid when it flows through the water surface.

[0003] However, the respiratory humidifiers in the prior art still face inherent challenges in achieving ideal temperature control. In order to maintain stable heat output, the heating disc is usually designed to have a large heat capacity, but this directly leads to a significant thermal inertia problem. When the respiratory gas flow changes (such as patient coughing, ventilator parameter adjustment or temporary disconnection of the pipeline) and needs to be quickly reduced, the high-heat-capacity heating disc cannot be quickly cooled by the conventional humidifier that stops heating. The large amount of heat energy stored in the heating disc will continue to be released, causing the gas temperature in the pipeline to inevitably overshoot severely, which not only poses a risk of heat injury to the patient's airway, but also makes it difficult to achieve precise temperature control. The existing control strategy is mostly passive feedback adjustment, i.e. only when the patient's end temperature has exceeded the standard does the heating stop, and this delayed response mechanism cannot solve the safety hazards caused by thermal inertia.

[0004] In addition, the design of existing humidification devices often ignores the comprehensive use experience in real clinical environments. The intensive care unit is an environment with many devices and complex lines, with power lines and sensor cables of various monitors and treatment devices intertwined and scattered, which not only affects the operation and movement of medical staff, but also poses a safety hazard. The existing humidifier itself usually does not integrate an effective cable management solution, further exacerbating the clutter of the bedside environment. At the same time, medical staff need to frequently observe and set the humidifier parameters, but the fixed angle of the operation screen cannot adapt to the observation needs of medical staff of different heights or different working positions (such as standing or sitting), forcing them to operate in an uncomfortable posture, affecting work efficiency and the accuracy of data reading. Therefore, developing a new airway humidification device that can not only solve the core temperature control problem, but also optimize human-machine interaction and environmental adaptability, has become a problem to be solved in the field. SUMMARY

[0005] In response to the shortcomings of the existing technology, the present invention provides a precise airway humidification control device for patients in the intensive care unit, which solves the problems of inaccurate temperature control and safety hazards caused by thermal inertia of existing medical humidifiers, as well as poor convenience and human-computer interaction experience due to chaotic cable management and fixed screen angles in clinical use.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a precise control device for airway humidification of patients in an intensive care unit, comprising:

[0007] A main unit, wherein a heating plate is provided on the top of the main unit, a cooling mechanism is installed at the bottom of the heating plate, and is used to cooperate with a control module in the main unit to actively cool and regulate the temperature of the heating plate. A heat dissipation mechanism is installed inside the main unit to dissipate heat transferred by the cooling mechanism;

[0008] The cooling mechanism includes a semiconductor refrigeration plate, the top cold surface of the semiconductor refrigeration plate is fixedly connected to the bottom of the heating plate, the bottom hot surface of the semiconductor refrigeration plate is fixedly connected to a heat spreader, and the bottom of the heat spreader is fixedly connected to a heat dissipation fin;

[0009] A wire harness mechanism is installed in the middle of the host, and the wire harness mechanism is used to restrain the wires on the host;

[0010] The front side of the host is rotatably connected to an operating screen, an angle adjustment mechanism is installed inside the host, and the operating screen is connected to the angle adjustment mechanism for controlling the pitch angle of the operating screen.

[0011] Preferably, the heat dissipation mechanism includes a heat dissipation duct, the heat dissipation duct is fixedly connected to the interior of the host, the heat dissipation fins are arranged inside the heat dissipation duct, and fans are installed on the air inlet side and the air outlet side of the heat dissipation duct.

[0012] Preferably, a guide plate is fixedly connected to the inside of the heat dissipation duct for shielding the gap between the two sides of the heat dissipation fins and the heat dissipation duct, and a guide cone is fixedly connected to the inside of the heat dissipation duct near the air inlet side for guiding the surrounding airflow to the center.

[0013] Preferably, the control module includes:

[0014] Main controller;

[0015] a patient-side temperature probe connected to the external gas circuit and communicatively connected to the main controller for providing real-time gas temperature data ultimately delivered to the patient;

[0016] a temperature sensor, fixedly connected to the bottom of the heating plate and communicatively connected to the main controller, for providing real-time local temperature data of the heating plate;

[0017] The cooling drive unit is controlled by the main controller and is used to cooperatively drive the semiconductor cooling plate and the fan.

[0018] Preferably, the main controller is configured to determine an active cooling trigger condition, where the trigger condition is satisfied when any of the following conditions occurs:

[0019] The value of the real-time gas temperature data exceeds a preset safety target value;

[0020] Alternatively, the rate of change of the real-time gas temperature data exceeds a preset temperature rate safety threshold;

[0021] When the active cooling trigger condition is met, the thermal inertia state of the heating plate is quantitatively evaluated by calculating the temperature difference between the real-time local temperature data and the safety target value;

[0022] Based on the calculated temperature difference, a control signal is generated for the cooling drive unit, wherein the strength of the control signal is proportional to the temperature difference, so as to cooperatively drive the semiconductor cooling plate and the fan to actively regulate the temperature of the heating plate.

[0023] The top of the fixing plate is fixedly connected to the fixing plate, and the bottom of the fixing plate is fixedly connected to the fixing plate. The top of the fixing plate is rotatably connected to the rotating rod 1, and the rotating rod 1 passes through the fixing plate and is fixedly connected to the rotating rod 2 at the bottom. The side of the rotating rod 2 is fixedly connected to the strap, and the rotating rod 2 is used to rotate and rewind the strap. The end of the strap is fixedly connected to the docking block, and a clockwork spring is provided on the top of the fixing plate. The center end of the clockwork spring is fixedly connected to the middle of the rotating rod 1, and the outer end of the clockwork spring is rotatably connected to the connecting rod of the fixing plate to fix the position of the docking block and keep the strap extended. The rear side of the main machine is fixedly connected to the wire harness plate, and the wire harness plate is provided with a wire management groove. A fixing mechanism is also installed inside the main machine.

[0024] Preferably, the fixing mechanism includes a mounting shell 2, the mounting shell 2 is fixedly connected to the inside of the main unit, the mounting shell 2 is rotatably connected to a rotating block inside, a spring telescopic rod 1 and a spring telescopic rod 2 are installed inside the mounting shell 2, the end of the spring telescopic rod 1 contacts the front side of the tail end of the rotating block, the middle part of the mounting shell 2 is slidably connected to a pressing rod, and the end of the pressing rod contacts the rear side of the tail end of the rotating block.

[0025] Preferably, the inside of the docking block is provided with a clamping groove, the clamping hole end of the rotating clamping block is clamped with the clamping groove, and the end of the spring telescopic rod II is fixedly connected with a resisting block.

[0026] Preferably, the angle adjusting mechanism comprises a mounting plate fixedly connected to the inside of the main machine, a moving frame and a baffle slidably connected to the two sides of the mounting plate respectively, the baffle being fixedly connected to the side of the moving frame, a slide rod fixedly connected to the side of the moving frame, a connecting frame rotatably connected to the end of the slide rod, the connecting frame being slidably connected to the back side of the operation screen, a motor installed in the middle of the mounting plate, a rotating plate fixedly connected to the output end of the motor, the rotating plate being rotatably connected to the middle of the mounting plate, and a driving rod fixedly connected to the side of the rotating plate close to the moving frame, the driving rod being arranged in the middle of the moving frame.

[0027] Preferably, the inside of the mounting plate and the moving frame is respectively provided with a sliding groove I and a sliding groove II, the connecting part of the moving frame and the baffle is slidably connected to the middle of the sliding groove II, and the driving rod is arranged in the inside of the sliding groove I.

[0028] The application provides a precise control device for airway humidification of patients in an intensive care unit.

[0029] 1. The application significantly improves the temperature control accuracy and patient safety during the airway humidification process by setting an active cooling mechanism and performing predictive precise control by the main controller. The main controller can not only start cooling when the gas temperature exceeds the safety target value, but also compare the temperature change rate with the preset temperature rate safety threshold to predict the trend of temperature overshoot in advance. Once triggered, the system will evaluate the thermal inertia of the heating disc based on the real-time local temperature data and apply a cooling intensity proportional to the thermal inertia state, thereby achieving rapid and stable braking of the heating disc temperature and avoiding the temperature lag and overshoot problems caused by thermal inertia in traditional humidifiers, ensuring that the gas temperature delivered to the patient is always stable within the safety range.

[0030] 2. The application greatly improves the use convenience and workplace safety of the equipment in the complex environment of the intensive care unit by setting a set of binding mechanism and fixing mechanism. Medical staff can easily pull out the belt and lock it by cooperating the docking block and the rotating clamping block, quickly organizing the messy wires around the equipment. When it needs to be released, only the tension of the clockwork spring can be triggered by pressing the pressing rod to realize automatic winding of the belt. This design not only makes the workbench more tidy and orderly, effectively avoiding the inconvenience and potential tripping risk caused by cable winding, but also simplifies the equipment layout and arrangement process, improves the clinical work efficiency.

[0031] 3. By equipping the operating screen with a motorized angle adjustment mechanism, this invention optimizes the device's human-computer interaction experience and enhances its clinical applicability. Medical staff can use simple button operations to drive the motor through a linkage mechanism consisting of a rotating plate, drive rod, and mobile frame to smoothly adjust the operating screen's pitch angle. This allows operators of different heights and standing or sitting positions to effortlessly adjust the screen to the optimal viewing angle, ensuring clear and comfortable reading of key data and device operation in any clinical scenario, reducing the risk of misreading and physical fatigue caused by poor viewing angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A perspective view of the present invention;

[0033] Figure 2 Schematic diagram of the structure of the cable tie plate of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the heating plate of the present invention;

[0035] Figure 4 Schematic diagram of the structure of the heat dissipation duct of the present invention;

[0036] Figure 5 It is a structural schematic diagram of the guide cone of the present invention;

[0037] Figure 6 This is a schematic structural diagram of the mounting housing 1 of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the strap of the present invention;

[0039] Figure 8 Schematic diagram of the structure of the clockwork spring of the present invention;

[0040] Figure 9 It is a structural schematic diagram of the rotating clamp block of the present invention;

[0041] Figure 10 It is a structural schematic diagram of the abutment block of the present invention;

[0042] Figure 11 It is a structural schematic diagram of the rotating plate of the present invention;

[0043] Figure 12 It is a structural schematic diagram of the rotating plate of the present invention;

[0044] Figure 13 This is a schematic diagram of the active cooling control system module of the present invention.

[0045] Among them, 1. host; 2. heating plate;

[0046] 3. Cooling mechanism; 301. Semiconductor refrigeration plate; 302. Heat sink; 303. Heat dissipation fins; 304. Temperature sensor;

[0047] 4. Heat dissipation mechanism; 401. Heat dissipation duct; 402. Fan; 403. Guide plate; 404. Guide cone;

[0048] 5. Wire harness mechanism; 501. Mounting housing 1; 502. Fixing plate; 503. Rotating rod 1; 504. Rotating rod 2; 505. Strap; 506. Docking block; 507. Spring; 508. Wire harness plate;

[0049] 6. Fixing mechanism; 601. Mounting housing 2; 602. Rotating clamp; 603. Spring telescopic rod 1; 604. Pressing rod; 605. Spring telescopic rod 2; 606. Stop block; 607. Slot;

[0050] 7. Angle adjustment mechanism; 701. Mounting plate; 702. Moving frame; 703. Sliding rod; 704. Connecting frame; 705. Motor; 706. Rotating plate; 707. Driving rod; 708. Slideway 1; 709. Slideway 2; 710. Baffle;

[0051] 8. Operate the screen. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the specification of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0053] Please see the attached Figure 1 - Attachment Figure 13 The embodiment of the present invention provides a precise control device for airway humidification of patients in an intensive care unit, comprising a main unit 1, a heating plate 2 being provided on the top of the main unit 1, a cooling mechanism 3 being installed on the bottom of the heating plate 2 for cooperating with a control module in the main unit 1 to actively cool and control the temperature of the heating plate 2, and a heat dissipation mechanism 4 being installed inside the main unit 1 for dissipating heat transferred from the cooling mechanism 3;

[0054] The cooling mechanism 3 includes a semiconductor refrigeration plate 301, the top cold surface of the semiconductor refrigeration plate 301 is fixedly connected to the bottom of the heating plate 2, the bottom hot surface of the semiconductor refrigeration plate 301 is fixedly connected to a heat spreader 302, and the bottom of the heat spreader 302 is fixedly connected to a heat dissipation fin 303;

[0055] A wire harness mechanism 5 is installed in the middle of the host 1, and is used to harness the wires on the host 1;

[0056] The front side of the host 1 is rotationally connected with an operation screen 8, and the inside of the host 1 is provided with an angle adjusting mechanism 7, the operation screen 8 is connected with the angle adjusting mechanism 7, and the angle adjusting mechanism 7 is used for controlling the pitch angle of the operation screen 8.

[0057] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 5 In a preferred embodiment of the present application, the heat dissipation mechanism 4 comprises a heat dissipation air duct 401, the heat dissipation air duct 401 is fixedly connected to the inside of the host 1, the heat dissipation fins 303 are arranged in the inside of the heat dissipation air duct 401, and the air inlet side and the air outlet side of the heat dissipation air duct 401 are both provided with a fan 402;

[0058] Specifically, the two fans 402 are arranged in a way that one side is for air inlet and the other side is for air outlet, the heat dissipation air duct 401 is a hollow pipe structure in the shape of a rectangular parallelepiped or similar, which is made of engineering plastics (such as ABS or PBT) with poor thermal conductivity, so as to ensure that the heat on the heat dissipation fins 303 is confined in the inside of the heat dissipation air duct 401.

[0059] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 5 In a preferred embodiment of the present application, the inside of the heat dissipation air duct 401 is fixedly connected with a flow guide plate 403, which is used for shielding the gap between the heat dissipation fins 303 and the heat dissipation air duct 401, and the position close to the air inlet side of the inside of the heat dissipation air duct 401 is fixedly connected with a flow guide cone 404, which is used for guiding the surrounding airflow to the center.

[0060] Specifically, the flow guide plate 403 is usually a long strip-shaped plate structure, which is fixed to the inner wall of the heat dissipation air duct 401 and closely adheres to the left and right side edges of the heat dissipation fins 303, and the role is to completely close the gap between the heat dissipation fins 303 and the inner wall of the heat dissipation air duct 401, so as to avoid the formation of airflow bypass and cause the decrease of heat dissipation efficiency.

[0061] The airflow in the central direction of the fan 402 is less than the surrounding airflow, the flow guide cone 404 can guide and converge the airflow around the fan 402 to the center, increase the airflow in the central direction of the fan 402, and make the airflow flow more evenly through the entire heat dissipation fins 303, thereby improving the overall heat dissipation performance.

[0062] Please refer to the accompanying drawings Figure 3 , the accompanying drawings Figure 4 and the accompanying drawings Figure 13 In a preferred embodiment of the present application, the control module comprises:

[0063] The main controller is the core of the entire system. It is usually a high-performance microcontroller (MCU), such as a chip based on the ARM Cortex-M series core. It integrates a high-precision analog-to-digital converter (ADC), a pulse width modulation (PWM) generator, and multiple communication interfaces. It is responsible for running the preset control algorithm, receiving input from all sensors, and making the final decision.

[0064] The patient-side temperature probe is connected to the external gas circuit and communicates with the main controller to provide real-time gas temperature data ultimately delivered to the patient. It is an independent, pluggable medical-grade temperature probe. When in use, it is placed on the Y-shaped piece of the breathing tube near the patient's inlet to measure the final temperature of the gas to be inhaled by the patient. It is connected to the interface on the host 1 through a dedicated cable and sends the real-time gas temperature data to the main controller in the form of an electrical signal.

[0065] The temperature sensor 304 is fixedly connected to the bottom of the heating plate 2 and is communicatively connected to the main controller. It is used to provide real-time local temperature data of the heating plate 2. It is a compact temperature sensing element, such as an NTC thermistor or a digital temperature sensor. It is firmly fixed to the bottom of the metal heating plate 2 by a high thermal conductivity epoxy resin or thermal conductive glue. Its physical position is close to the semiconductor cooling plate 301, so that it can extremely sensitively and accurately measure the real-time local temperature data of the heating plate 2. This data is a direct basis for evaluating thermal inertia.

[0066] The cooling drive unit is controlled by the main controller and is used to collaboratively drive the semiconductor refrigeration plate 301 and the fan 402. It is an independent circuit board module that receives low-level logic signals (such as PWM signals) from the main controller and converts them into powerful DC currents. The unit integrates at least two drive channels: one is a high-power H-bridge or a dedicated TEC controller chip, which is used to accurately control the current size and direction (cooling or heating) supplied to the semiconductor refrigeration plate 301; the other is a power MOSFET or fan driver chip, which is used to control the speed of the two fans 402.

[0067] Please see the attached Figure 3 , Attachment Figure 4 and attached Figure 13 In a preferred embodiment of the present invention, the main controller is configured to determine the active cooling trigger condition, and the trigger condition is satisfied when any of the following conditions occurs:

[0068] The value of real-time gas temperature data exceeds the preset safety target value;

[0069] Alternatively, the rate of change of the real-time gas temperature data exceeds a preset temperature rate safety threshold;

[0070] When the active cooling trigger condition is met, the thermal inertia state of the heating plate 2 is quantitatively evaluated by calculating the temperature difference between the real-time local temperature data and the safety target value;

[0071] Based on the calculated temperature difference, a control signal is generated for the cooling drive unit. The strength of the control signal is proportional to the temperature difference, so as to cooperatively drive the semiconductor cooling plate 301 and the fan 402 to actively control the temperature of the heating plate 2.

[0072] Specifically, the main controller collects the real-time gas temperature data from the patient-side temperature probe and the real-time local temperature data from the temperature sensor 304 at a very high frequency (e.g., 100 times per second), and compares the real-time gas temperature data with two key parameters preset in the system to determine the active cooling trigger condition;

[0073] The real-time gas temperature value is compared with the safety target value (e.g., 37.0°C) set by the user on the operation screen 8. Once the real-time gas temperature is greater than the safety target value, the condition is immediately met;

[0074] The main controller performs differential calculations on continuous real-time gas temperature data to calculate its rate of change (i.e., heating rate, in °C / second). It then compares this rate of change with a temperature rate safety threshold (e.g., 0.05 °C / second) determined by the manufacturer in experiments and then preset in the main unit 1. If the heating rate exceeds the safety threshold, even if the temperature has not yet exceeded the safety threshold (e.g., it is only 36.8 °C), the system predicts that a severe overshoot is about to occur, and the trigger condition is also met.

[0075] Once any of the above trigger conditions is met, the main controller immediately executes the next step, reading the real-time local temperature data at that moment and calculating the temperature difference between it and the safety target value (such as 37°C). This calculated temperature difference (48°C in this example) is an accurate quantitative value of the excess heat or thermal inertia strength currently stored in the heating plate 2;

[0076] Based on the calculated temperature difference, the main controller generates a control signal (e.g., a PWM signal with a specific duty cycle) for the cooling drive unit. The strength of the signal is proportional to the temperature difference. After receiving the signal, the cooling drive unit collaboratively drives the semiconductor cooling plate 301 and the fan 402 to start working. When the temperature difference is large, the output signal strength is also large, and the semiconductor cooling plate 301 and the fan 402 operate at nearly full power, providing strong cooling. As the temperature of the heating plate 2 drops, the temperature difference decreases, and the control signal strength also decreases linearly, and the cooling power decreases smoothly.

[0077] This proportional control method can achieve a rapid and steady reduction in the temperature of the heating plate 2, accurately suppress the overshoot of the patient end temperature, and stabilize it near the safe target value.

[0078] Please see the attached Figure 2 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Figure 9 and attached Figure 10 In a preferred embodiment of the present invention, the cable harness mechanism 5 includes a mounting shell 501, which is fixedly connected to the middle of the main unit 1. The interior of the mounting shell 501 is fixedly connected to a fixing plate 502. The top of the fixing plate 502 is rotatably connected to a rotating rod 503. The rotating rod 503 passes through the fixing plate 502 and is fixedly connected to a rotating rod 2 504 at the bottom. The side of the rotating rod 2 504 is fixedly connected to a strap 505. The rotating rod 2 504 is used to rotate and rewind the strap 505. The strap 5 The end of 05 is fixedly connected to a docking block 506, and a spring 507 is provided on the top of the fixed plate 502. The central end of the spring 507 is fixedly connected to the middle of the rotating rod 503, and the outer end of the spring 507 is rotatably connected to the connecting rod of the fixed plate 502, which is used to fix the position of the docking block 506 and keep the strap 505 extended. The rear side of the host 1 is fixedly connected to a cable tie plate 508, which has a cable management groove. A fixing mechanism 6 is also installed inside the host 1;

[0079] Specifically, the mounting shell 1 501 fixes each structure inside the host 1. When the strap 505 is pulled out, the clockwork spring 507 changes from a relaxed state to a tightened state, and at the same time applies a pulling force to the rotating rod 2 504 to reverse and rewind the strap 505. The wire management groove of the wire harness plate 508 makes it easier for users to fix the wires.

[0080] Please see the attached Figure 2 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Figure 9 and attached Figure 10 In a preferred embodiment of the present invention, the fixing mechanism 6 includes a second mounting shell 601, which is fixedly connected to the interior of the main body 1. A rotating block 602 is rotatably connected to the interior of the second mounting shell 601. A spring telescopic rod 1 603 and a spring telescopic rod 2 605 are installed inside the second mounting shell 601. The end of the spring telescopic rod 1 603 contacts the front end of the rear end of the rotating block 602. A pressing rod 604 is slidably connected to the middle of the second mounting shell 601. The end of the pressing rod 604 contacts the rear end of the rotating block 602.

[0081] Specifically, each structure is installed into the host 1 using the mounting shell 2 601. The spring telescopic rod 1 603 and the spring telescopic rod 2 605 are mainly composed of springs and telescopic rods. This is the existing technology and will not be repeated. The end of the spring telescopic rod 1 603 is against the front side of the tail end of the rotating block 602.

[0082] Please see the attached Figure 2 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Figure 9 and attached Figure 10 In a preferred embodiment of the present invention, a slot 607 is provided inside the docking block 506, the bayonet end of the rotating block 602 is engaged with the slot 607, and the end of the spring telescopic rod 605 is fixedly connected to the block 606, which squeezes the docking block 506;

[0083] Specifically, the docking block 506 squeezes the rotating clamping block 602 through the inclined surface of the rotating clamping block 602 so that its clamping end is away from the docking block 506. When the clamping end of the rotating clamping block 602 is aligned with the clamping slot 607, the spring telescopic rod 1 603 applies pressure to it, so that the clamping end is rotated and clamped into the clamping slot 607, and the position of the docking block 506 is fixed through the squeezing cooperation of the spring telescopic rod 2 605 and the block 606.

[0084] Please see the attached Figure 1 , Attachment Figure 11 and attached Figure 12 In a preferred embodiment of the present invention, the angle adjustment mechanism 7 includes a mounting plate 701, which is fixedly connected to the inside of the main body 1, and a movable frame 702 and a baffle 710 are slidably connected to both sides of the mounting plate 701. The baffle 710 is fixedly connected to the side of the movable frame 702, and a sliding rod 703 is fixedly connected to the side of the movable frame 702. The end of the sliding rod 703 is rotatably connected to the connecting frame 704, and the connecting frame 704 is slidably connected to the rear side of the operation screen 8. A motor 705 is installed in the middle of the mounting plate 701, and the output end of the motor 705 is fixedly connected to a rotating plate 706. The rotating plate 706 is rotatably connected to the middle of the mounting plate 701. A driving rod 707 is fixedly connected to the side of the rotating plate 706 close to the movable frame 702, and the driving rod 707 is set in the middle of the movable frame 702;

[0085] Specifically, each structure is installed in the host 1 using the mounting plate 701, the motor 705 controls the rotation of the driving rod 707 through the rotating plate 706, the driving rod 707 rotates and slides in the mobile rack 702, pushing the mobile rack 702, and the mobile rack 702 controls the selection of the operation screen 8 through the cooperation of the sliding rod 703 and the connecting rack 704.

[0086] Please see the attached Figure 1 , Attachment Figure 11 and attached Figure 12In a preferred embodiment of the present invention, a first slide groove 708 and a second slide groove 709 are respectively provided inside the mounting plate 701 and the movable frame 702. The connecting portion between the movable frame 702 and the baffle 710 is slidably connected to the middle portion of the second slide groove 709. The driving rod 707 is disposed inside the first slide groove 708.

[0087] Specifically, by designing the first slide groove 708 and the second slide groove 709, space is provided for the movement of the mounting plate 701 and the movable frame 702, while limiting the movement range of the two.

[0088] Working principle:

[0089] The main controller continuously monitors the real-time gas temperature data provided by the patient-end temperature probe. When the value of the real-time gas temperature data exceeds the preset safety target value, or its rate of change exceeds the preset temperature rate safety threshold, the main controller determines that the active cooling trigger condition is met. The main controller will immediately obtain the real-time local temperature data of the heating disk 2 through the temperature sensor 304 fixed at the bottom of the heating disk 2, and calculate the temperature difference between the data and the safety target value. Subsequently, the main controller generates a control signal proportional to the intensity based on the temperature difference, controls the cooling drive unit to collaboratively drive the semiconductor cooling plate 301 and the fan 402 to work, ensures the precise intervention of active cooling control, and realizes rapid, precise and stable regulation of the temperature of the heating disk 2 to prevent temperature shock to the patient; the heat spreader 302 transfers the heat from the hot surface of the semiconductor cooling plate 301 to the heat dissipation fins 303, and dissipates the heat on the heat dissipation fins 303 through the cooperation of the heat dissipation duct 401, the fan 402, the guide plate 403 and the guide cone 404, thereby ensuring the stability of the operation of the semiconductor cooling plate 301.

[0090] Put the wires on the rear side of the host 1 into the wire management groove of the wire harness plate 508, pull out the strap 505, and insert the docking block 506 into the second mounting shell 601. The docking block 506 squeezes and rotates the rotating clamping block 602 through the inclined surface of the rotating clamping block 602, so that its bayonet end is away from the docking block 506. Then, when the bayonet end of the rotating clamping block 602 is aligned with the slot 607 of the docking block 506, the pressure applied by the spring telescopic rod 1 603 rotates the rotating clamping block 602 so that its bayonet end is stuck in the slot 607, and the spring telescopic rod 2 605 controls the block 606 to press against the other side of the docking block 506, so that the fixed The current position of the fixed strap 505 and the rotational tension applied by the clockwork spring 507 to the rotating rod 2 504 enable the rotating rod 2 504 to maintain the tension on the winding of the strap 505. The taut strap 505 stably fixes the wires on the rear side of the host 1 in the cable tie plate 508. When the strap 505 needs to be retracted, only the pressing rod 604 needs to be pressed down. The pressing rod 604 will press the rotating block 602 and move its bayonet end away from the release docking block 506. Once released, the tension of the clockwork spring 507 will drive the rotating rod 2 504 to rotate, quickly and automatically winding up the strap 505, thereby realizing convenient cable management.

[0091] When the angle of the operating screen 8 needs to be adjusted, the button on the front side of the host 1 is pressed to control the motor 705 to drive the rotating plate 706 to rotate. While the rotating plate 706 rotates, the driving rod 707 on its side rotates and slides in the movable frame 702, pushing the movable frame 702 to move forward. The movable frame 702 then controls the operating screen 8 to flip and tilt through the cooperation of the sliding rod 703 and the connecting frame 704. If the driving rod 707 rotates half a circle on the rotating plate 706, the motor 705 continues to drive the rotating plate 706 to rotate, and the rotating plate 706 will push the movable frame 702 to move backward, controlling the operating screen 8 to return to the normal position. The entire transmission process is precise and stable, allowing the user to easily adjust the operating screen 8 to any viewing angle.

[0092] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A precise control device for airway humidification of patients in an intensive care unit, characterized in that: include: A host (1), wherein a heating plate (2) is provided on the top of the host (1), a cooling mechanism (3) is installed at the bottom of the heating plate (2), and is used to cooperate with a control module in the host (1) to actively cool and regulate the temperature of the heating plate (2), and a heat dissipation mechanism (4) is installed inside the host (1) to dissipate heat transferred by the cooling mechanism (3); The cooling mechanism (3) comprises a semiconductor refrigeration plate (301), the top cold surface of the semiconductor refrigeration plate (301) is fixedly connected to the bottom of the heating plate (2), the bottom hot surface of the semiconductor refrigeration plate (301) is fixedly connected to a heat spreader (302), and the bottom of the heat spreader (302) is fixedly connected to a heat dissipation fin (303); A wire harness mechanism (5) is installed in the middle of the host (1), and the wire harness mechanism (5) is used to harness the wires on the host (1); The front side of the host (1) is rotatably connected to an operating screen (8), an angle adjustment mechanism (7) is installed inside the host (1), and the operating screen (8) is connected to the angle adjustment mechanism (7) for controlling the pitch angle of the operating screen (8).

2. The device for precise airway humidification control for patients in an intensive care unit according to claim 1, characterized in that: The heat dissipation mechanism (4) comprises a heat dissipation duct (401), the heat dissipation duct (401) is fixedly connected to the interior of the host (1), the heat dissipation fins (303) are arranged inside the heat dissipation duct (401), and fans (402) are installed on both the air inlet side and the air outlet side of the heat dissipation duct (401).

3. The device for precise airway humidification control for patients in an intensive care unit according to claim 2, characterized in that: A guide plate (403) is fixedly connected to the interior of the heat dissipation duct (401) for shielding the gap between the two sides of the heat dissipation fins (303) and the heat dissipation duct (401); a guide cone (404) is fixedly connected to the interior of the heat dissipation duct (401) near the air inlet side for guiding the surrounding air flow to the center.

4. The device for precise airway humidification control for patients in an intensive care unit according to claim 2, characterized in that: The control module includes: Main controller; a patient-side temperature probe connected to the external gas circuit and communicatively connected to the main controller for providing real-time gas temperature data ultimately delivered to the patient; a temperature sensor (304), fixedly connected to the bottom of the heating plate (2) and communicatively connected to the main controller, for providing real-time local temperature data of the heating plate (2); A cooling drive unit is controlled by the main controller and is used to cooperatively drive the semiconductor cooling plate (301) and the fan (402).

5. The device for precise airway humidification control for patients in an intensive care unit according to claim 4, characterized in that: The main controller is configured to determine an active cooling trigger condition, where the trigger condition is satisfied when any of the following conditions occurs: The value of the real-time gas temperature data exceeds a preset safety target value; Alternatively, the rate of change of the real-time gas temperature data exceeds a preset temperature rate safety threshold; When the active cooling trigger condition is met, the thermal inertia state of the heating plate (2) is quantitatively evaluated by calculating the temperature difference between the real-time local temperature data and the safety target value; Based on the calculated temperature difference, a control signal is generated for the cooling drive unit, wherein the intensity of the control signal is proportional to the temperature difference, so as to cooperatively drive the semiconductor cooling plate (301) and the fan (402) to actively regulate the temperature of the heating plate (2).

6. The device for precise airway humidification control for patients in an intensive care unit according to claim 1, characterized in that: The harness mechanism (5) includes a mounting shell (501), the mounting shell (501) is fixedly connected to the middle of the main machine (1), the interior of the mounting shell (501) is fixedly connected to a fixing plate (502), the top of the fixing plate (502) is rotatably connected to a rotating rod (503), the rotating rod (503) passes through the fixing plate (502) and is fixedly connected to a rotating rod (504) at the bottom, the side of the rotating rod (504) is fixedly connected to a strap (505), the rotating rod (504) is used to rotate and rewind the strap (505), and the end of the strap (505) is fixedly connected to the fixing plate (502). The main unit (1) is fixedly connected to a docking block (506), a spring (507) is provided on the top of the fixed plate (502), the central end of the spring (507) is fixedly connected to the middle of the rotating rod (503), the outer end of the spring (507) is rotatably connected to the connecting rod of the fixed plate (502), and is used to fix the position of the docking block (506) and keep the strap (505) in an extended state. The rear side of the main unit (1) is fixedly connected to a wire harness plate (508), and the wire harness plate (508) is provided with a wire management groove. A fixing mechanism (6) is also installed inside the main unit (1).

7. The device for precise airway humidification control for patients in an intensive care unit according to claim 6, characterized in that: The fixing mechanism (6) includes a second mounting shell (601), the second mounting shell (601) is fixedly connected to the inside of the main unit (1), the inside of the second mounting shell (601) is rotatably connected to a rotating block (602), the inside of the second mounting shell (601) is installed with a spring telescopic rod (603) and a spring telescopic rod (605), the end of the spring telescopic rod (603) contacts the front side of the tail end of the rotating block (602), the middle part of the second mounting shell (601) is slidably connected to a pressing rod (604), the end of the pressing rod (604) contacts the rear side of the tail end of the rotating block (602).

8. The device for precise airway humidification control for patients in an intensive care unit according to claim 7, characterized in that: A card slot (607) is provided inside the docking block (506), the bayonet end of the rotating card block (602) is engaged with the card slot (607), and the end of the second spring telescopic rod (605) is fixedly connected with a block (606), and the block (606) squeezes the card block (606).

9. The device for precise airway humidification control for patients in an intensive care unit according to claim 1, characterized in that: The angle adjustment mechanism (7) comprises a mounting plate (701), the mounting plate (701) is fixedly connected to the inside of the main unit (1), and the two sides of the mounting plate (701) are slidably connected to a movable frame (702) and a baffle (710), the baffle (710) is fixedly connected to the side of the movable frame (702), the side of the movable frame (702) is fixedly connected to a sliding rod (703), the end of the sliding rod (703) is rotatably connected to a connecting frame (704), and the connecting frame (704) is fixedly connected to the side of the movable frame (702). The connecting frame (704) is slidably connected to the rear side of the operating screen (8); a motor (705) is installed in the middle of the mounting plate (701); an output end of the motor (705) is fixedly connected to a rotating plate (706); the rotating plate (706) is rotatably connected to the middle of the mounting plate (701); a driving rod (707) is fixedly connected to a side of the rotating plate (706) close to the movable frame (702); and the driving rod (707) is arranged in the middle of the movable frame (702).

10. The device for precise airway humidification control for patients in an intensive care unit according to claim 9, characterized in that: A first slide groove (708) and a second slide groove (709) are respectively provided inside the mounting plate (701) and the movable frame (702); the connecting portion between the movable frame (702) and the baffle (710) is slidably connected to the middle of the second slide groove (709); and the driving rod (707) is arranged inside the first slide groove (708).

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