Anesthesia concentration adjusting and monitoring device for anesthesiology department

Abstract

The application discloses a kind of anesthetic concentration adjusting monitoring devices for anesthesiology department in the technical field of medical equipment, the device contains carrier, deflection groove, liquid inlet mechanism, disc, pivot, deflection resistance adjusting mechanism, first transfer channel, second transfer channel, liquid outlet mechanism, microfluidic detection mechanism, acquisition unit, control unit and alarm unit etc.Component.Working time is installed in anesthetic infusion path, acquisition unit obtains patient weight information, control unit judges anesthetic concentration range accordingly and controls deflection resistance.Anesthetic enters deflection groove, disc is deflected by boundary layer effect, channel is switched by deflection angle, realizes that anesthetic enters patient vein or microfluidic detection mechanism carries out detection.Control unit controls alarm unit output corresponding alarm signal according to detection result.This scheme can effectively reduce the risk of anesthesia caused by abnormal drug concentration by real-time monitoring and automatic adjustment, guarantee the life safety of patient.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically an anesthesia concentration adjustment and monitoring device for anesthesiology. Background Technology

[0002] In the field of anesthesia, liquid drug infusion systems are widely used. These systems, administered according to preset parameters, play a crucial role in maintaining stable vital signs and achieving optimal anesthetic effects during surgery. However, this process is fraught with potential risks arising from human error or system misconfiguration.

[0003] Anesthesiologists, who prescribe, administer, and manage a variety of medications in their work, often operate at a fast-paced and continuous pace, making them susceptible to distraction. Statistics show that medication errors and proximity errors are relatively common in anesthesia, estimated to occur between one in 133 and one in 450 anesthetic drug administrations. Based on this data, anesthesiologists may incur an average of seven medication errors per year, two of which can cause serious harm to patients. Most of these medication errors are due to human error and are preventable. Therefore, reducing human error and improving the accuracy and safety of anesthetic drug infusions has become an urgent problem to be solved.

[0004] The most common types of drug misuse during anesthesia include: incorrect dosage (calculation error, concentration, or infusion rate), substitution (exchanging syringes), duplication (extra dose), and omission (missing dose). These types of errors cover all stages from drug preparation to infusion, and once they occur, they can have serious negative impacts on the patient's anesthetic effect and postoperative recovery.

[0005] To address the aforementioned issues and improve the safety and reliability of anesthetic drug infusion, several technical solutions have been proposed. For example, patent document CN102355913B discloses a system for controlling the injection of anesthetic or sedative drugs to induce anesthesia or sedation. Its main principle is to analyze electroencephalogram (EEG) signals to obtain an anesthesia depth signal, reflecting the patient's anesthetic state. The system can automatically adjust the injection of anesthetic drugs to maintain the anesthesia depth signal below a predetermined value (induction period) or within a predetermined range of the target value (maintenance period), thus maintaining the predetermined anesthesia depth. While this system can solve some common problems of anesthetic drug misuse, it still has limitations: for example, there is a certain delay between drug injection and the actual effect, especially when faced with sudden changes in anesthesia depth, the system cannot react immediately. This may lead to untimely drug infusion adjustments and an inability to instantly correct deviations.

[0006] Given the shortcomings of existing technologies, there is an urgent need for a device that can quickly identify and adjust abnormal concentrations of anesthetic drugs to further improve the safety and reliability of infusion systems, reduce the risk of drug misuse, and ensure patient anesthesia safety. Summary of the Invention

[0007] To address the aforementioned problems, the present invention aims to provide an anesthesia concentration adjustment and monitoring device for anesthesiology departments, which can accurately monitor drug concentration in real time and issue an immediate alarm to facilitate adjustment of the infusion rate and ensure precise control of the depth of anesthesia.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows:

[0009] An anesthesia concentration adjustment and monitoring device for anesthesiology includes a carrier; a deflection groove is formed inside the carrier, and the deflection groove is connected to a liquid inlet mechanism; several disks are rotatably connected inside the deflection groove, and a preset distance is set between adjacent disks, the preset distance being no more than twice the thickness of the fluid boundary layer; a rotating shaft is axially fixedly connected between adjacent disks; a deflection resistance adjustment mechanism is set on any one of the disks; a first transfer channel and a second transfer channel are set on the rotating shaft; the first transfer channel is connected to a liquid outlet mechanism; the second transfer channel is connected to a microfluidic detection mechanism; when the deflection angle of the rotating shaft reaches the first preset angle, the first transfer channel is connected to the deflection groove; when the deflection angle of the rotating shaft reaches the second preset angle, the second transfer channel is connected to the deflection groove.

[0010] It also includes a data acquisition unit, a control unit, and an alarm unit; the data acquisition unit is used to acquire the patient's weight information; the control unit is used to determine the anesthetic concentration range based on the weight information and control the operation of the deflection resistance adjustment mechanism, determine the alarm category based on the detection results of the microfluidic detection mechanism, and control the operation of the alarm unit; the alarm unit is used to output an alarm signal based on the alarm category.

[0011] Working principle:

[0012] This device is installed along the infusion path of the anesthetic. During continuous anesthesia, the acquisition unit collects the patient's weight information. The control unit determines the corresponding anesthetic concentration range based on the weight information and then controls the resistance of the deflection resistance adjustment mechanism. When the anesthetic enters the deflection tank through the infusion mechanism, the anesthetic will cause the disc to deflect due to the boundary layer effect. Under the same infusion rate, the higher the anesthetic concentration, the larger the deflection angle. Under the same concentration, the faster the anesthetic infusion rate, the larger the deflection angle. When the disc deflects to the first preset angle, the shaft will deflect to connect with the first transfer channel and the deflection tank. At this time, the anesthetic enters the outlet mechanism through the first transfer channel and finally enters the patient's vein.

[0013] During this process, if the anesthetic concentration is too high or the infusion rate is too fast, the shaft will deflect to connect with the second transfer channel and the deflection tank. The anesthetic will then enter the microfluidic detection mechanism for concentration detection. The control unit will determine whether the concentration is too high based on the detection result. If the detection result shows a high concentration, the control unit will activate the alarm unit to issue an alarm for a high concentration. If the detection result shows a normal concentration, the control unit will activate the alarm unit to issue an alarm for a fast infusion rate. The output parameters are cross-validated by the deflection angle and the detection result of the microfluidic detection mechanism.

[0014] The above approach has the following beneficial effects:

[0015] 1. This solution cleverly combines boundary layer effects and deflection angles, enabling the device to instantly sense changes in anesthetic concentration and infusion rate, and promptly switch channels for processing. When abnormalities occur in concentration or infusion rate, the detection and alarm mechanisms are triggered immediately without waiting for the drug effect to appear. Compared to traditional methods that rely on indirect indicators such as EEG activity for adjustment, this significantly shortens the reaction time, providing patients with a valuable treatment window and effectively avoiding situations such as excessively deep or shallow anesthesia due to abnormal drug concentrations.

[0016] 2. This solution integrates mechanical deflection with microfluidic detection technology to form a dual monitoring system. On the one hand, the deflection angle based on the boundary layer effect is used to initially screen the drug solution state; on the other hand, the microfluidic detection mechanism performs precise detection on suspected abnormal samples. The two systems verify and complement each other, greatly improving the accuracy and reliability of drug concentration monitoring.

[0017] 3. This solution acquires patient weight information in real time through a data acquisition unit. Based on this data, the control unit intelligently determines the appropriate anesthetic concentration range for each individual patient and automatically adjusts the deflection resistance. This design, which dynamically adjusts monitoring and infusion parameters according to the patient's physiological characteristics, fully embodies the concept of personalized medicine. Compared to traditional fixed-parameter infusion methods, it better meets the specific needs of different patient groups, improving the consistency and safety of anesthetic effects.

[0018] Furthermore, the deflection resistance adjustment mechanism includes an adjustment groove on one side of the disc, an electromagnet and a magnetic lever are installed in the adjustment groove, the magnetic lever is fixedly connected to the disc, the magnetic lever rotates with the adjustment groove, and the electromagnet is used to generate a repulsive force to resist the deflection of the magnetic lever.

[0019] Beneficial effects: By setting an adjustment groove on one side of the disc, the interaction between the electromagnet and the magnetic lever generates a repulsive force to resist the deflection of the magnetic lever, allowing for precise adjustment of the resistance according to actual needs. The electromagnet is controlled by the control unit, which can dynamically adjust the repulsive force based on the patient's real-time physiological data, ensuring that the disc deflection angle accurately reflects the current anesthetic concentration and infusion rate.

[0020] Furthermore, the microfluidic detection mechanism includes a microfluidic chip. The inlet of the microfluidic chip is connected to a first connecting pipe. When the rotating shaft deflects to a second preset angle, the first connecting pipe is connected to a second transfer channel. The outlet of the microfluidic chip is connected to a second connecting pipe, which is connected to a liquid dispensing mechanism. A laser emitter and a receiver are respectively provided on both sides of the microfluidic chip, and both the laser emitter and the receiver are electrically connected to the control unit.

[0021] Beneficial effects: The microfluidic chip accurately detects anesthetic concentrations using a laser emitter and receiver. As the drug flows through the microfluidic chip, the laser passes through the drug, and the light signal received by the receiver changes depending on the drug concentration. The control unit accurately determines whether the concentration is abnormal based on the changes in the light signal.

[0022] Furthermore, a third connecting pipe is connected inside the deflection groove. The third connecting pipe is connected to the first connecting pipe. A movable plate and a return spring are provided on the disc near the third connecting pipe. The movable plate is slidably engaged with the deflection groove and the rotating shaft, respectively. When the pressure inside the deflection groove is higher than the preset pressure, the movable plate overcomes the displacement of the return spring until the third connecting pipe is connected to the deflection groove.

[0023] Beneficial effects: During infusion, when the concentration of anesthetic is too low or the infusion rate of anesthetic is too low, the deflection angle of the disc will be difficult to reach the first preset angle, and the anesthetic will continue to accumulate in the deflection groove.

[0024] When the pressure inside the deflection tank is too high, the movable plate slides against the spring force of the reset spring, so that the third connecting pipe is connected to the deflection tank. Excess liquid flows through the third connecting pipe and the first connecting pipe to the microfluidic chip for detection and discharge. The control unit judges the output of the anesthetic based on the detection results of the microfluidic chip and the deflection of the disk, and controls the operation of the early warning unit.

[0025] Through the connection of the third connecting pipe, the accumulated drug solution can be guided to the microfluidic chip for detection, enabling the control unit to have a comprehensive understanding of the drug concentration and infusion status. The control unit combines the detection results from the microfluidic chip with the deflection of the disk to accurately determine whether the anesthetic concentration is too low or the infusion rate is too slow, providing medical staff with more precise alarm information so they can take timely and targeted measures to ensure the safety and stability of the anesthesia process.

[0026] Furthermore, a capacitance sensor is also installed on one side of the first connecting pipe. The capacitance sensor is used to collect the capacitance changes in the first connecting pipe, and the control unit is used to control the operation of the laser transmitter and receiver based on the capacitance changes.

[0027] Beneficial effects: The capacitive sensor monitors the capacitance changes within the first connecting pipe in real time. The control unit only activates the laser emitter and receiver to detect concentration when a capacitance change caused by the flow of medication is detected. This avoids unnecessary laser emission and reception operations when there is no medication flow, extends the lifespan of the laser emitter and receiver, and improves the stability and reliability of the device.

[0028] By monitoring with a capacitive sensor, the laser emitter and receiver are activated only when concentration detection is required, reducing energy consumption in standby or non-flowing states, improving energy efficiency, and lowering operating costs.

[0029] Furthermore, a Venturi throat is provided at the connection point between the liquid dispensing mechanism and the second connecting pipe.

[0030] Beneficial effects: The Venturi throat design significantly increases the flow rate of the anesthetic as it passes through this area, creating negative pressure within the second connecting tube. This negative pressure effectively guides and promotes fluid flow within the microfluidic chip, allowing the drug to pass through the detection area more quickly, shortening the detection time, improving the overall detection efficiency of the device, and ensuring timely acquisition of drug concentration information.

[0031] Furthermore, a liquid storage tank is also provided inside the carrier, which is connected to the liquid dispensing mechanism. A valve is provided on the path connecting the liquid storage tank and the liquid dispensing mechanism, and the valve is electrically connected to the control unit.

[0032] Beneficial effects: When the microfluidic detection mechanism detects that the concentration of anesthetic is too high, the control unit can open the valve in time to mix the diluent in the reservoir with the anesthetic, quickly reduce the concentration of anesthetic, avoid excessive anesthesia or anesthetic accidents caused by excessive concentration, and improve the safety of the anesthesia process.

[0033] Furthermore, a squeezing mechanism is provided inside the liquid storage tank; the squeezing mechanism includes a squeezing spring and a piston, the piston is slidably engaged with the liquid storage tank, and the squeezing spring is used to support the movement of the piston.

[0034] Beneficial effect: The constant thrust applied to the piston by the compression spring ensures that the diluent (such as physiological saline) in the reservoir is stably supplied to the dispensing mechanism when needed.

[0035] Furthermore, a Tesla valve channel is installed inside the liquid dispensing mechanism.

[0036] Beneficial effects: As an anti-backflow mechanism, the Tesla valve channel can effectively prevent the anesthetic from flowing back during infusion, ensuring that the drug always flows unidirectionally towards the patient's vein, thus guaranteeing the stability and safety of the infusion.

[0037] Furthermore, the liquid inlet mechanism is connected to the deflection groove along the tangential direction of the deflection groove.

[0038] Beneficial effects: Tangential liquid inlet can still maintain good boundary layer effect and hydrodynamic characteristics at low flow rates. Tangential force can be maximized to be converted into the rotational motion of the disk, making the disk more sensitive to hydrodynamic response and improving the device's detection efficiency for changes in anesthetic concentration and flow rate. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural diagram of the anesthesia concentration adjustment and monitoring device for anesthesiology of the present invention.

[0040] Figure 2 for Figure 1 The front view.

[0041] Figure 3 for Figure 2 Sectional view of AA.

[0042] Figure 4 for Figure 3 A magnified view of a portion of point M in the middle.

[0043] Figure 5 This is a simplified internal view of the deflection groove in the anesthesia concentration adjustment and monitoring device for anesthesiology of the present invention.

[0044] The reference numerals in the accompanying drawings include: 1. Carrier; 2. Warning light; 3. Buzzer; 101. Deflection groove; 102. Rotating shaft; 103. First disk; 104. Second disk; 105. First transfer channel; 106. Second transfer channel; 107. Adjustment groove; 108. Magnetic paddle; 109. First connecting pipe; 110. Microfluidic chip; 111. Receiver; 112. Laser emitter; 113. Capacitive sensor; 114. Second connecting pipe; 115. Movable plate; 116. Third connecting pipe; 117. Return spring; 118. Valve; 119. Venturi throat; 120. Liquid storage tank; 121. Compression spring; 122. Piston; 123. Inlet pipe; 124. Outlet pipe. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0048] The following detailed description illustrates the specific implementation method:

[0049] The basic implementation examples are as follows: Figures 1-5 As shown: An anesthesia concentration adjustment and monitoring device for anesthesiology departments mainly includes a carrier 1, which serves as the supporting structure for the entire device. The carrier 1 is made of high-strength, low-density, and corrosion-resistant medical-grade aluminum alloy. Its surface undergoes a fine oxidation treatment to form a dense protective film, possessing good wear resistance and biocompatibility. This ensures the stability and safety of the device in complex medical environments while reducing the overall weight of the device, facilitating installation and fixation.

[0050] The internal structure of carrier 1 is precisely designed and manufactured. Carrier 1 has a deflection groove 101 for accommodating other components. Its shape and size are precisely customized according to the internal component layout to ensure that all components can fit together tightly and operate stably. The deflection groove 101 is connected to a liquid inlet mechanism, specifically, the liquid inlet mechanism uses a liquid inlet tube 123 made of silicone rubber with a smooth inner wall. The liquid inlet tube 123 is connected to the deflection groove 101 tangentially and is tightly fixed with a special medical-grade connector to ensure the sealing and firmness of the connection and prevent drug leakage. Under the principle of fluid dynamics, tangential liquid inlet allows the anesthetic to impact the components in the deflection groove 101 tangentially, generating a more efficient deflection driving force. Even under low flow rate infusion conditions, it can ensure that the components in the deflection groove 101 respond sensitively to fluid dynamics, realizing precise monitoring and control functions.

[0051] A plurality of disks are rotatably connected within the deflection groove 101. In this embodiment, a pair of disks are provided, namely a first disk 103 and a second disk 104, which are combined as follows: Figure 5As shown, the first disk 103 is located at the top of the deflection groove 101, and the second disk 104 is located at the bottom of the deflection groove 101. The disks are made of ultra-lightweight, high-strength polycarbonate material. A preset distance is set between adjacent disks, that is, the preset axial distance between the disks is precisely calculated and strictly controlled to ensure that it is no more than twice the thickness of the fluid (anesthetic) boundary layer, thereby ensuring the effective role of the boundary layer effect in the disk deflection monitoring process while meeting the fluid dynamics requirements.

[0052] A rotating shaft 102 is axially fixed between adjacent disks. The rotating shaft 102 is made of high-precision medical-grade stainless steel, possessing excellent anti-magnetic and corrosion-resistant properties, ensuring that its performance will not be affected by external magnetic field interference or chemical corrosion during long-term use. A deflection resistance adjustment mechanism is provided on each disk. In this embodiment, the deflection resistance adjustment mechanism is located on the top of the first disk 103. Specifically, the deflection resistance adjustment mechanism includes an adjustment groove 107 formed on one side of the disk. An electromagnet and a magnetic pawl 108 are arranged in the adjustment groove 107. The shape and size of the adjustment groove 107 are adapted to the shape of the electromagnet and the magnetic pawl 108, ensuring that all components can be tightly installed and operate stably. The magnetic pawl 108 is made of a soft magnetic material with high magnetic permeability and low coercivity, and is welded and fixedly connected to the top of the first disk 103, and rotates in conjunction with the adjustment groove 107. The electromagnet is used to generate a repulsive force to resist the deflection of the magnetic pawl 108.

[0053] Preferably, a groove is provided on the top of the second disk 104, and a movable plate 115 and several return springs 117 are provided in the groove. The two ends of the return springs 117 are welded and fixed to the bottom of the second disk 104 and the bottom of the movable plate 115, respectively.

[0054] The rotating shaft 102 is provided with a first transfer channel 105 and a second transfer channel 106. The first transfer channel 105 is connected to a liquid outlet mechanism. Specifically, the liquid outlet mechanism includes a liquid outlet pipe 124 made of silicone rubber, the same material as the liquid inlet mechanism, ensuring consistency with the liquid inlet mechanism in terms of biocompatibility, flexibility, and corrosion resistance. Preferably, the liquid outlet pipe 124 is provided with an anti-backflow mechanism; the anti-backflow mechanism is a Tesla valve channel. Figure 3 The anesthetic flows from the left side of the outlet tube 124 to the right side of the outlet tube 124 in a positive direction, meaning that the Tesla valve channel will not experience any resistance.

[0055] The second transfer channel 106 connects to a microfluidic detection mechanism, specifically a microfluidic chip 110. The microfluidic chip 110 is made of high-precision quartz glass, possessing extremely high chemical stability and optical transparency, ensuring that the laser can obtain a clear and accurate light signal when passing through the drug solution, providing a reliable basis for concentration detection. The microfluidic channels inside the chip are processed using precise photolithography and etching processes, resulting in precise channel dimensions and a smooth surface. This ensures laminar flow of the drug solution within, avoiding the generation of eddies and bubbles, thereby improving detection accuracy.

[0056] The inlet of the microfluidic chip 110 is connected to a first connecting pipe 109. When the rotating shaft 102 deflects to a second preset angle, the first connecting pipe 109 connects to the second transfer channel 106. The outlet of the microfluidic chip 110 is connected to a second connecting pipe 114, which connects to the liquid outlet pipe 124. Preferably, a Venturi throat 119 connects the second connecting pipe 114 to the liquid outlet pipe 124. A laser emitter 112 and a receiver 111 are respectively provided on both sides of the microfluidic chip 110. Preferably, a third connecting pipe 116 is also connected to the deflection groove 101. The third connecting pipe 116 connects to the first connecting pipe 109. When the pressure in the deflection groove 101 is higher than the preset pressure, the third connecting pipe 116 connects to the deflection groove 101 (the movable plate 115 is squeezed and moves in the direction of overcoming the elastic force of the return spring 117, so that the opening of the third connecting pipe 116 is exposed in the deflection groove 101).

[0057] Preferably, capacitance sensors 113 are installed on both the side near the first connecting pipe 109 and the side near the third connecting pipe 116 (not shown in the figure) to collect real-time capacitance changes within the pipes. The capacitance sensors 113 are made of high-sensitivity, low-noise ceramic capacitance sensing material, capable of accurately sensing minute capacitance changes caused by the flow of the liquid medicine.

[0058] The laser emitter 112 is a high-brightness, single-wavelength semiconductor laser that can emit a stable, high-intensity laser beam; the receiver 111 uses a high-sensitivity photodiode that can accurately receive the laser signal after passing through the liquid medicine and convert it into an electrical signal for output for analysis and processing.

[0059] When the deflection angle of the rotating shaft 102 reaches the first preset angle, that is, when one of the openings of the first transfer channel 105 is exposed in the deflection groove 101 (as shown in the attached figure) Figure 5 As shown), at this time, the first transfer channel 105 is connected to the deflection groove 101. When the deflection angle of the rotating shaft 102 reaches the second preset angle (that is, when the rotating shaft 102 continues to rotate to the entrance of the second transfer channel 106 and docks with the deflection groove 101), the second transfer channel 106 is connected to the deflection groove 101.

[0060] It also includes a data acquisition unit, a control unit, and an alarm unit. The data acquisition unit is used to collect the patient's weight information. Specifically, in this embodiment, the data acquisition unit uses a high-precision electronic scale sensor, which is installed on the side of the operating table or at a suitable location on the anesthesia cart. This sensor has fast response, high-precision measurement, and good stability, and can acquire the patient's weight data in real time and accurately, and transmit it to the control unit in the form of a digital signal.

[0061] The control unit is used to determine the anesthetic concentration range based on body weight information and control the operation of the deflection resistance adjustment mechanism. It also determines the alarm category based on the detection results from the microfluidic detection mechanism and controls the operation of the alarm unit. Specifically, the control unit, as the core "brain" of the entire device, employs a high-performance, low-power embedded microprocessor, possessing powerful data processing capabilities and rapid instruction execution speed. It integrates multiple advanced control algorithms and data processing modules, enabling it to receive real-time information from multiple sources, including patient weight information from the acquisition unit, concentration detection data from the microfluidic detection mechanism, and capacitance change signals from the capacitance sensor 113, and perform rapid and accurate analysis and processing.

[0062] Based on a preset anesthetic concentration range model and a database of patient weight-anesthetic concentration relationships, the control unit can intelligently determine whether the current anesthetic concentration meets the individual needs of the patient and precisely adjust the operating parameters of the deflection resistance adjustment mechanism, such as the current of the electromagnet, thereby achieving precise and dynamic control of the anesthetic infusion process.

[0063] The alarm unit outputs different types of alarm signals based on instructions from the control unit. The alarm unit employs multi-mode alarm methods, including a high-decibel buzzer 3 audible alarm, a warning light 2 alarm (high-brightness LED light alarm), and visual text prompts. The buzzer 3 uses a medical-grade high-quality piezoelectric buzzer, which emits a clear and penetrating sound, effectively alerting medical staff in noisy operating rooms. The warning light 2 alarm uses high-brightness LEDs of different colors (e.g., green for normal, yellow for warning, and red for danger), visually displaying the alarm level through flashing frequency and brightness changes. The visual text prompt alarm displays the specific alarm content in real time on a small LCD screen, such as "anesthetic concentration too high," "infusion rate too fast," "anesthetic concentration too low," and "infusion rate too slow," providing clear and timely warnings to medical staff, ensuring they can quickly take appropriate measures to protect patient anesthesia safety.

[0064] Preferably, the carrier 1 also includes a liquid storage tank 120, which is connected to a liquid outlet pipe 124. A valve 118 is installed along the connection path between the liquid storage tank 120 and the liquid outlet pipe 124, and the valve 118 is electrically connected to the control unit. Preferably, the liquid storage tank 120 is provided with a compression mechanism; the compression mechanism includes a compression spring 121 and a piston 122, the piston 122 is slidably engaged with the liquid storage tank 120, and the compression spring 121 is used to support the movement of the piston 122.

[0065] The specific implementation process is as follows:

[0066] Before surgery, medical staff need to install the anesthesia concentration adjustment and monitoring device (i.e., this device) on the anesthetic infusion path (specifically, between the infusion pump containing the anesthetic and the indwelling needle in the patient's vein), ensuring that all components of the device are tightly connected, well-sealed, and in normal working condition. Simultaneously, the data acquisition unit is activated to accurately collect the patient's weight information and transmit the data to the control unit in real time.

[0067] When the anesthetic infusion begins, the anesthetic enters the deflection tank 101 tangentially through the inlet tube 123. Because the inlet tube 123 is made of silicone rubber tubing, it possesses good flexibility and biocompatibility, ensuring stable flow of the anesthetic at low flow rates. The anesthetic impacts the first disk 103 and the second disk 104 tangentially, generating a driving force that deflects the disks.

[0068] The first disk 103 and the second disk 104 deflect under the action of hydrodynamic force, and the rotating shaft 102 rotates accordingly. When the deflection angle of the rotating shaft 102 reaches the first preset angle, the first transfer channel 105 is connected to the deflection groove 101, and the anesthetic flows into the outflow pipe 124 through the first transfer channel 105, and then enters the patient's vein after passing through the Venturi larynx 119.

[0069] During infusion, if the anesthetic concentration is too high or the infusion rate is too fast, the disc deflection angle increases. When the deflection angle of the rotating shaft 102 reaches the second preset angle, the second transfer channel 106 connects with the deflection groove 101, and the anesthetic enters the microfluidic detection mechanism. The concentration of the drug solution is detected by the laser emitter 112 and receiver 111 on both sides of the microfluidic chip 110. The capacitance sensor 113 on one side of the first connecting pipe 109 monitors the capacitance change in the first connecting pipe 109 in real time. When drug flow is detected, the signal is transmitted to the control unit, and the control unit starts the laser emitter 112 and receiver 111. If the detection result shows that the concentration is too high, the control unit drives the alarm unit to issue an alarm signal for high concentration; if the concentration is normal but the infusion rate is too fast, an alarm signal for excessive infusion rate is issued.

[0070] When the microfluidic detection mechanism detects that the anesthetic concentration is too high, the control unit calculates the required dilution ratio based on the patient's weight information and then controls valve 118 to open. Under the action of the compression spring 121, the squeezing mechanism pushes piston 122 to move, squeezing out the diluent (such as saline) in the reservoir 120 and mixing it with the anesthetic, thereby reducing the anesthetic concentration. The mixed solution then enters the patient's vein through the dispensing mechanism. The entire adjustment process is rapid and precise, ensuring a stable depth of anesthesia for the patient.

[0071] When the anesthetic concentration is too low, the deflection angle of the disc is relatively small and cannot reach the first preset angle. At this time, the anesthetic (infused by the infusion pump) accumulates in the deflection tank 101, but due to the low concentration, the driving force generated on the disc is insufficient. Similarly, if the infusion rate of the anesthetic is too slow, the amount of drug entering the deflection tank 101 per unit time is insufficient. The disc deflection angle is difficult to reach the first preset angle.

[0072] At this time, the hydraulic pressure in the deflection tank 101 will continuously increase until it squeezes the movable plate 115 to the point of misalignment with the opening of the third connecting pipe, thus switching the third connecting pipe and the deflection tank 101 into a connected state. The capacitance sensor 113 on one side of the third connecting pipe 116 monitors the capacitance change in the third connecting pipe 116 in real time. When the flow of the liquid is detected, the signal is transmitted to the control unit, which then starts the laser emitter 112 and receiver 111. If the detection result shows that the concentration is too low, the control unit drives the alarm unit to issue an alarm signal for low concentration; if the concentration is normal but the infusion rate is too slow, an alarm signal for slow infusion rate is issued.

[0073] After receiving an alarm, medical staff can take measures according to the actual situation.

[0074] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific structures and / or characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An anesthesia concentration adjustment and monitoring device for use in anesthesiology departments, comprising a carrier (1); characterized in that: The carrier (1) has a deflection groove (101) inside, the deflection groove (101) is connected to a liquid inlet mechanism, a number of discs are rotatably connected inside the deflection groove (101), a preset distance is set between adjacent discs, and a rotating shaft (102) is axially fixed between adjacent discs. Any disc is provided with a deflection resistance adjustment mechanism for adjusting the magnitude of the disc rotation resistance. The rotating shaft (102) is provided with a first transfer channel (105) and a second transfer channel (106). The first transfer channel (105) is connected to a liquid outlet mechanism, and the second transfer channel (106) is connected to a microfluidic detection mechanism for detecting drug concentration. When the deflection angle of the rotating shaft (102) reaches the first preset angle, the first transfer channel (105) is connected to the deflection groove (101). When the deflection angle of the rotating shaft (102) reaches the second preset angle, the second transfer channel (106) is connected to the deflection groove (101). It also includes a data acquisition unit, a control unit, and an alarm unit; the data acquisition unit is used to acquire the patient's weight information; the control unit is used to determine the anesthetic concentration range based on the weight information, control the operation of the deflection resistance adjustment mechanism, determine the alarm category based on the detection results of the microfluidic detection mechanism, and control the operation of the alarm unit; the alarm unit is used to output an alarm signal based on the alarm category. The deflection resistance adjustment mechanism includes an adjustment groove (107) on one side of the disk. An electromagnet and a magnetic rudder (108) are provided in the adjustment groove (107). The magnetic rudder (108) is fixedly connected to the disk and rotates with the adjustment groove (107). The electromagnet is used to generate a repulsive force to resist the deflection of the magnetic rudder (108). The microfluidic detection mechanism includes a microfluidic chip (110), which is embedded in a carrier (1). The inlet of the microfluidic chip (110) is connected to a first connecting pipe (109). When the rotating shaft (102) deflects to a second preset angle, the first connecting pipe (109) is connected to a second transfer channel (106). The outlet of the microfluidic chip (110) is connected to a second connecting pipe (114), which is connected to an outlet mechanism. A laser emitter (112) and a receiver (111) are respectively provided on both sides of the microfluidic chip (110). Both the laser emitter (112) and the receiver (111) are electrically connected to the control unit. A Venturi throat (119) is provided at the connection between the liquid dispensing mechanism and the second connecting pipe (114); The liquid dispensing mechanism is equipped with a Tesla valve channel.

2. The anesthesia concentration adjustment and monitoring device for anesthesiology departments according to claim 1, characterized in that: The deflection groove (101) is also connected to a third connecting pipe (116), which is connected to the first connecting pipe (109). A movable plate (115) and a return spring (117) are provided on the side of the disc near the third connecting pipe (116). The movable plate (115) is slidably engaged with the deflection groove (101) and the rotating shaft (102) respectively. When the pressure in the deflection groove (101) is higher than the preset pressure, the movable plate (115) is displaced against the return spring (117) until the third connecting pipe (116) is connected to the deflection groove (101).

3. The anesthesia concentration adjustment and monitoring device for anesthesiology departments according to claim 2, characterized in that: A capacitance sensor (113) is also provided on one side of the first connecting pipe (109). The capacitance sensor (113) is used to collect the capacitance change in the first connecting pipe (109). The control unit is used to control the operation of the laser transmitter (112) and receiver (111) based on the capacitance change.

4. The anesthesia concentration adjustment and monitoring device for anesthesiology departments according to claim 3, characterized in that: The carrier (1) is also provided with a liquid storage tank (120), which is connected to the liquid dispensing mechanism. A valve (118) is provided on the connection path between the liquid storage tank (120) and the liquid dispensing mechanism. The valve (118) is electrically connected to the control unit.

5. The anesthesia concentration adjustment and monitoring device for anesthesiology departments according to claim 4, characterized in that: A squeezing mechanism is provided inside the liquid storage tank (120); the squeezing mechanism includes a squeezing spring (121) and a piston (122), the piston (122) slides in cooperation with the liquid storage tank (120), and the squeezing spring (121) is used to support the movement of the piston (122).

6. The anesthesia concentration adjustment and monitoring device for anesthesiology departments according to claim 5, characterized in that: The liquid inlet mechanism is connected to the deflection groove (101) along the tangential direction of the deflection groove (101).

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