Anesthesia concentration adjusting and monitoring device for anesthesiology department

Abstract

The invention discloses an anesthesia concentration adjusting and monitoring device for the anesthesiology department in the technical field of medical equipment. The device comprises a carrier, a deflection groove, a liquid inlet mechanism, a disc, a rotating shaft, a deflection resistance adjusting mechanism, a first transfer channel, a second transfer channel, a liquid outlet mechanism, a microfluidic detection mechanism, an acquisition unit, a control unit, an alarm unit and the like. During working, the anesthetic infusion device is installed on an anesthetic infusion path, the collecting unit obtains body weight information of a patient, and the control unit judges the anesthetic concentration range and regulates and controls deflection resistance according to the body weight information. After the anesthetic enters the deflection groove, the disc is deflected by means of the boundary layer effect, and the channel is switched through the deflection angle, so that the anesthetic enters the vein of a patient or is detected by the microfluidic detection mechanism. The control unit controls the alarm unit to output corresponding alarm signals according to detection results. According to the scheme, through real-time monitoring and automatic adjustment, the anesthesia risk caused by abnormal medicine concentration can be effectively reduced, and the life safety of a patient is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular is an anesthetic concentration regulating and monitoring device for anesthesia department. Background Art

[0002] Liquid drug infusion systems are widely used in the field of anesthesia. They deliver medication according to preset parameters, playing a key role in maintaining stable vital signs during surgery and achieving the desired anesthesia effect. However, this process is subject to numerous potential risks caused by human error or incorrect system settings.

[0003] Because anesthesiologists need to prescribe, formulate, and manage a variety of different medications in their work, and often work at a fast and continuous pace, they are easily distracted by other factors. According to statistics, medication errors and near-errors are relatively common in anesthesia, with an estimated incidence ranging from 1 error in every 133 anesthetic drug uses to 1 error in every 450 anesthetic drug uses. Based on this data, anesthesiologists may make an average of seven medication errors per year, two of which may cause serious harm to patients. Most of these medication errors are due to human error and are preventable. Therefore, how to reduce human error and improve the accuracy and safety of anesthetic drug infusion has become an urgent problem to be solved.

[0004] The most common types of drug misuse in anesthesia include incorrect dosing (errors in calculation, concentration, or infusion rate), substitution (syringe exchange), duplication (extra dose), and omission (missing dose). These errors encompass all aspects of drug preparation and infusion, and once they occur, they can have a serious negative impact on the patient's anesthesia and postoperative recovery.

[0005] In order to solve the above problems and improve the safety and reliability of anesthetic drug infusion, existing related technical solutions have been proposed. For example, the patent document with publication number CN102355913B discloses a system for controlling the device for injecting anesthetics or sedatives to induce anesthesia or sedation. Its main principle is that by analyzing the brain electrical activity signal, the system can obtain an anesthesia depth signal, which reflects the patient's anesthesia state. The system can automatically adjust the injection of anesthetic drugs so that the anesthesia depth signal remains below a predetermined value (induction period) or within a predetermined range of a target value (maintenance period) to maintain a predetermined anesthesia depth. Although the system can solve some common anesthetic drug misuse problems, there are still some limitations: for example, there is a certain delay from drug injection to the actual effect, especially when facing sudden changes in anesthesia depth, the system cannot respond immediately. This may lead to untimely adjustment of drug infusion and inability to correct deviations instantly.

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

[0007] In order to solve the above problems, the purpose of the present invention is to provide an anesthetic concentration adjustment and monitoring device for anesthesia department, which can accurately monitor the drug concentration in real time and give an immediate alarm to facilitate adjustment of the infusion rate and ensure precise control of the anesthesia depth.

[0008] In order to achieve the above object, the technical solution of the present invention is as follows:

[0009] An anesthesia concentration adjustment and monitoring device for anesthesia department includes a carrier; a deflection slot is defined within the carrier, the deflection slot is connected to a liquid inlet mechanism, a plurality of discs are rotatably connected within the deflection slot, a preset distance is set between adjacent discs, and the preset distance is no greater than twice the fluid boundary layer thickness; a rotating shaft is axially fixedly connected between adjacent discs, a deflection resistance adjustment mechanism is provided on any of the discs, a first transfer channel and a second transfer channel are provided on the rotating shaft, the first transfer channel is connected to the liquid outlet mechanism, and the second transfer channel is connected to a microfluidic detection mechanism; when the deflection angle of the rotating shaft reaches a first preset angle, the first transfer channel is connected to the deflection slot, and when the deflection angle of the rotating shaft reaches a second preset angle, the second transfer channel is connected to the deflection slot;

[0010] It also includes an acquisition unit, a control unit and an alarm unit; the acquisition unit is used to collect 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 on the infusion path of the anesthetic. When continuous anesthesia is performed, the collection unit will collect 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 groove through the liquid inlet mechanism, due to the boundary layer effect, the anesthetic will drive the disc to deflect. Under the same infusion rate conditions, the higher the anesthetic concentration, the larger the deflection angle. Under the same concentration conditions, the faster the anesthetic infusion rate, the larger the deflection angle; when the disc deflection reaches a first preset angle, the rotating shaft will deflect to the first transfer channel and connect with the deflection groove. At this time, the anesthetic enters the liquid 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 the second transfer channel to connect to the deflection groove, and the anesthetic will enter the microfluidic detection mechanism for concentration testing. The control unit determines whether the concentration is too high based on the concentration test results. If the test results show that the concentration is too high, the control unit controls the alarm unit to issue a high concentration alarm. If the test shows that the concentration is normal, the control unit controls the alarm unit to issue a high infusion rate alarm. The output parameters are cross-validated by the deflection angle and the test results of the microfluidic detection mechanism.

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

[0015] 1. This solution cleverly combines the boundary layer effect with deflection angle, enabling the device to instantly sense changes in anesthetic concentration and infusion rate, and promptly switch channels for processing. When concentration or infusion rate changes, the detection and alarm mechanism is immediately triggered without waiting for the drug's effects to manifest. Compared to traditional methods that rely on indirect indicators such as EEG activity, this significantly shortens response time, providing patients with a valuable therapeutic window and effectively preventing situations such as over- or under-anesthesia caused by 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 provides preliminary screening of the drug solution state; on the other hand, the microfluidic detection mechanism accurately detects suspected abnormal samples. The two mutually verify and complement each other, greatly improving the accuracy and reliability of drug concentration monitoring.

[0017] 3. This solution uses a data acquisition unit to obtain real-time patient weight information. 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 based on the patient's physiological characteristics, fully embodies the concept of personalized medicine. Compared to traditional fixed-parameter infusion methods, this design better meets the specific needs of different patient groups and improves the consistency and safety of anesthetic effects.

[0018] Furthermore, the deflection resistance adjustment mechanism includes an adjustment slot opened on one side of the disc, in which an electromagnet and a magnetic pick are arranged. The magnetic pick is fixedly connected to the disc, and the magnetic pick rotates in cooperation with the adjustment slot. The electromagnet is used to generate a repulsive force to hinder the deflection of the magnetic pick.

[0019] Beneficial Effects: By providing an adjustment slot on one side of the disc, the interaction between the electromagnet and the magnetic pick generates a repulsive force that hinders the magnetic pick's deflection, allowing the resistance to be precisely adjusted based on actual needs. The electromagnet, controlled by a control unit, dynamically adjusts the repulsive force based on the patient's real-time physiological data, ensuring that the disc's 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 is deflected to a second preset angle, the first connecting pipe is connected to the second transfer channel, the outlet of the microfluidic chip is connected to a second connecting pipe, the second connecting pipe is connected to the liquid outlet mechanism, and a laser emitter and a receiver are respectively provided on both sides of the microfluidic chip, and 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 varies depending on the drug concentration. Based on this light signal change, the control unit accurately determines whether the concentration is abnormal.

[0022] Furthermore, a third connecting pipe is connected to the deflection groove, and 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 slides with the deflection groove and the rotating shaft respectively. When the pressure in 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 effect: During the infusion process, when the anesthetic concentration is too low or the infusion rate of the 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 in the deflection groove is too high, the movable plate overcomes the elastic force of the return spring and slides, so that the third connecting pipe is connected to the deflection groove. The excess liquid flows through the third connecting pipe and the first connecting pipe to the microfluidic chip for detection and then is discharged. The control unit determines the output status of the anesthetic based on the detection results of the microfluidic chip and the deflection of the disc, and controls the operation of the early warning unit.

[0025] Through a third connecting pipe, accumulated liquid medicine is directed to the microfluidic chip for testing, enabling the control unit to fully understand the drug concentration and infusion status. Combining the microfluidic chip's detection results with the disc's deflection, the control unit accurately determines whether the anesthetic concentration is too low or the infusion rate is too slow, providing medical staff with more precise alarm information, allowing them to take timely and targeted measures to ensure a safe and stable anesthesia process.

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

[0027] Beneficial Effects: The capacitive sensor monitors capacitance changes within the first connecting pipe in real time. Only when a capacitance change caused by liquid flow is detected does the control unit activate the laser transmitter and receiver to perform concentration detection. This avoids unnecessary laser emission and reception when no liquid is flowing, extending the service life of the laser transmitter and receiver and improving the stability and reliability of the device.

[0028] Through the monitoring of the capacitive sensor, the laser transmitter and receiver are only started when concentration detection is required, which reduces the energy consumption of the device when it is in standby or no liquid flow state, improves energy utilization efficiency and reduces operating costs.

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

[0030] Beneficial Effects: The Venturi throat significantly increases the anesthetic's flow rate as it passes through this area, generating 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 detection time, improving the detection efficiency of the entire device, and ensuring timely acquisition of drug concentration information.

[0031] Furthermore, a liquid storage tank is provided in the carrier, which is connected to the liquid outlet mechanism. A valve is provided on the communication path between the liquid storage tank and the liquid outlet mechanism, and the valve is electrically connected to the control unit.

[0032] Beneficial effects: When the microfluidic detection mechanism detects that the anesthetic concentration 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 anesthetic concentration, avoid excessive anesthesia or anesthesia accidents caused by excessive concentration, and improve the safety of the anesthesia process.

[0033] Furthermore, an extrusion mechanism is provided in the liquid storage tank; the extrusion mechanism includes an extrusion spring and a piston, the piston is in sliding cooperation with the liquid storage tank, and the extrusion spring is used to support the movement of the piston.

[0034] Beneficial effect: The constant thrust exerted by the extrusion spring on the piston can ensure that the diluent (such as saline) in the liquid storage tank is stably supplied to the liquid discharge mechanism when needed.

[0035] Furthermore, a Tesla valve channel is provided in the liquid outlet mechanism.

[0036] Beneficial effects: As an anti-backflow mechanism, the Tesla valve channel can effectively prevent the backflow of anesthetics during the infusion process, ensuring that the drug solution always flows in one direction toward the patient's vein, thereby ensuring the stability and safety of the infusion.

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

[0038] Beneficial effects: The tangential liquid inlet method can still maintain good boundary layer effect and fluid dynamic characteristics at low flow rates. The tangential force can be maximized and converted into the rotational motion of the disc, making the disc more sensitive to fluid dynamics and improving the device's detection efficiency of changes in anesthetic concentration and flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0040] Figure 2 for Figure 1 Front view of .

[0041] Figure 3 for Figure 2 Middle AA section view.

[0042] Figure 4 for Figure 3 A partial enlarged schematic diagram of point M in the middle.

[0043] Figure 5 The figure is a schematic diagram of the internal structure of the deflection groove in the anesthesia concentration adjustment and monitoring device for anesthesia department of the present invention.

[0044] The figure marks in the drawings of the specification include: 1. carrier; 2. warning light; 3. buzzer; 101. deflection groove; 102. rotating shaft; 103. first disc; 104. second disc; 105. first transfer channel; 106. second transfer channel; 107. adjustment groove; 108. magnetic pick; 109. first connecting pipe; 110. microfluidic chip; 111. receiver; 112. laser transmitter; 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. extrusion spring; 122. piston; 123. liquid inlet pipe; 124. liquid outlet pipe. DETAILED DESCRIPTION

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

[0046] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0047] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0048] The following is further described in detail through specific implementation methods:

[0049] The embodiment is basically as shown in the attached Figure 1-Figure 5 The following figure shows an anesthesia concentration adjustment and monitoring device for anesthesia. The device primarily comprises a carrier 1, which serves as the entire device's supporting structure and is constructed from a high-strength, low-density, and corrosion-resistant medical-grade aluminum alloy. Its surface undergoes a meticulous oxidation treatment, forming a dense protective film that offers excellent wear resistance and biocompatibility. This ensures the device's stability and safety in complex medical environments, while also reducing its overall weight and facilitating installation and fixturing.

[0050] The internal structure of the carrier 1 has been precisely designed and processed. The carrier 1 is provided with a deflection slot 101 for accommodating other components. The shape and size of the deflection slot 101 are precisely customized according to the layout of the internal components to ensure that the components can fit closely and operate stably. The deflection slot 101 is connected to a liquid inlet mechanism. Specifically, the liquid inlet mechanism adopts a liquid inlet tube 123 made of silicone rubber with a smooth inner wall. The liquid inlet tube 123 is connected to the deflection slot 101 along the tangential direction of the deflection slot 101 and is tightly fixed through a dedicated medical-grade connector to ensure the sealing and firmness of the connection and prevent leakage of the liquid medicine. Under the principle of fluid dynamics, the tangential liquid inlet can make the anesthetic impact the components in the deflection slot 101 in a tangential direction, generating a more efficient deflection driving force. Even in the case of low flow rate infusion, it can ensure that the components in the deflection slot 101 respond sensitively to the fluid dynamics, thereby achieving precise monitoring and control functions.

[0051] Several discs are rotatably connected in the deflection slot 101. In this embodiment, a pair of discs are provided, which are the first disc 103 and the second disc 104. Figure 5As shown, a first disk 103 is located at the top of the deflection slot 101, and a second disk 104 is located at the bottom of the deflection slot 101. The disks are made of ultra-lightweight, high-strength polycarbonate. A preset distance is set between adjacent disks. This axial distance is precisely calculated and strictly controlled to ensure it is no greater than twice the fluid (anesthetic) boundary layer thickness. This ensures that the boundary layer effect is effective in monitoring disk deflection while meeting fluid dynamics requirements.

[0052] A rotating shaft 102 is axially fixedly connected between adjacent disks. Made from high-precision medical stainless steel, the shaft 102 exhibits excellent anti-magnetic and corrosion resistance, ensuring its performance is unaffected 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 slot 107 provided on one side of the disk. An electromagnet and a magnetic pick 108 are located within the adjustment slot 107. The shape and size of the adjustment slot 107 match the outer shapes of the electromagnet and magnetic pick 108, ensuring tight installation and stable operation of all components. The magnetic pick 108 is made of a soft magnetic material with high magnetic permeability and low coercivity. It is welded and fixedly connected to the top of the first disk 103 and rotates in conjunction with the adjustment slot 107. The electromagnet is used to generate a repulsive force to prevent the magnetic pick 108 from deflecting.

[0053] Preferably, a groove is provided on the top of the second disc 104 , a movable plate 115 and a plurality of return springs 117 are provided in the groove, and both ends of the return spring 117 are welded and fixed to the bottom of the second disc 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 the same silicone rubber material as the liquid inlet mechanism, ensuring consistency with the liquid inlet mechanism in terms of biocompatibility, flexibility, and corrosion resistance. Preferably, an anti-backflow mechanism is provided in the liquid outlet pipe 124; the anti-backflow mechanism is a Tesla valve channel. Figure 3 The anesthetic agent flows from the left side of the liquid outlet pipe 124 to the right side of the liquid outlet pipe 124 in a positive flow direction, that is, the Tesla valve channel does not generate resistance.

[0055] Second transfer channel 106 is connected to a microfluidic detection mechanism. Specifically, this mechanism includes a microfluidic chip 110, crafted from high-precision quartz glass with exceptional chemical stability and optical transparency. This ensures that the laser beam transmits a clear and accurate optical signal as it passes through the liquid, providing a reliable basis for concentration detection. The microfluidic channels within the chip are meticulously crafted through photolithography and etching processes. The channels are precisely dimensioned and have a smooth surface, ensuring laminar flow within the liquid, preventing 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 a liquid outlet pipe 124. Preferably, the connection between the second connecting pipe 114 and the liquid outlet pipe 124 is connected to a Venturi throat 119. 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 slot 101. The third connecting pipe 116 connects to the first connecting pipe 109. When the pressure in the deflection slot 101 exceeds the preset pressure, the third connecting pipe 116 connects to the deflection slot 101 (the movable plate 115 is squeezed and moves in a direction that overcomes the elastic force of the return spring 117, exposing the opening of the third connecting pipe 116 to the deflection slot 101).

[0057] Preferably, capacitive 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 monitor the capacitance changes within the pipes in real time. Capacitive sensors 113 are made of highly sensitive, low-noise ceramic capacitance sensing material and can accurately sense the slight capacitance changes caused by the flow of the liquid medicine.

[0058] The laser transmitter 112 uses a high-brightness, single-wavelength semiconductor laser that can emit a stable, high-intensity laser beam; the receiver 111 uses a highly sensitive photodiode that can accurately receive the laser signal after passing through the liquid medicine and convert it into an electrical signal for output to facilitate 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 slot 101. When the deflection angle of the rotating shaft 102 reaches the second preset angle (that is, as the rotating shaft 102 continues to rotate until the entrance of the second transfer channel 106 is docked with the deflection slot 101), the second transfer channel 106 is connected to the deflection slot 101.

[0060] The system 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 in a suitable location on the anesthesia cart. This sensor features fast response, high-precision measurement, and excellent stability, enabling it to accurately and in real time obtain the patient's weight data and transmit it to the control unit as a digital signal.

[0061] The control unit is used to determine the anesthetic concentration range based on weight information, control the operation of the deflection resistance adjustment mechanism, determine the alarm type based on the detection results of the microfluidic detection mechanism, and control the operation of the alarm unit. Specifically, the control unit, serving as the core "brain" of the entire device, utilizes a high-performance, low-power embedded microprocessor with powerful data processing capabilities and fast instruction execution speed. It integrates multiple advanced control algorithms and data processing modules, capable of receiving multiple channels of information in real time, including patient weight information from the acquisition unit, concentration data from the microfluidic detection mechanism, and capacitance change signals from the capacitive sensor 113, and performing rapid and accurate analysis and processing.

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

[0063] The alarm unit is used to output different types of alarm signals based on commands from the control unit. It employs multiple alarm modes, including a high-decibel buzzer 3 audible alarm, a warning light 2 (a high-brightness LED light), and a visual text prompt. The buzzer 3 uses a medical-grade, high-quality piezoelectric buzzer 3. Its clear, penetrating sound effectively alerts medical staff in noisy operating rooms. The warning light 2 uses a high-brightness LED with different colors (e.g., green for normal, yellow for warning, and red for danger). The flashing frequency and brightness of the LED visually indicate the alarm level. The visual text prompt displays detailed alarm information in real time on a small LCD screen, including details such as "anesthetic concentration too high," "infusion rate too fast," "anesthetic concentration too low," and "infusion rate too slow." This provides clear and timely warnings to medical staff, ensuring they can quickly take appropriate countermeasures and ensure patient anesthesia safety.

[0064] Preferably, a liquid reservoir 120 is further provided within the carrier 1. The liquid reservoir 120 is connected to a liquid outlet pipe 124. A valve 118 is installed in the communication path between the liquid reservoir 120 and the liquid outlet pipe 124. The valve 118 is electrically connected to the control unit. Preferably, a squeezing mechanism is provided within the liquid reservoir 120; the squeezing mechanism includes a squeezing spring 121 and a piston 122. The piston 122 is slidably engaged with the liquid reservoir 120, and the squeezing 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 must install the anesthetic concentration adjustment and monitoring device (this device) on the anesthetic infusion path (specifically, between the syringe 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 order. At the same time, they must activate the data collection unit to accurately collect the patient's weight information and transmit the data in real time to the control unit.

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

[0068] The first and second disks 103 and 104 deflect under the influence of fluid dynamics, causing the shaft 102 to rotate accordingly. When the deflection angle of the shaft 102 reaches a first predetermined angle, the first transfer channel 105 communicates with the deflection slot 101, and the anesthetic flows through the first transfer channel 105 into the liquid outlet tube 124, then through the Venturi throat 119 and into the patient's veins.

[0069] During the infusion process, 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 is connected to the deflection groove 101, and the anesthetic enters the microfluidic detection mechanism. The laser emitter 112 and the receiver 111 on both sides of the microfluidic chip 110 are used to detect the concentration of the drug solution. The capacitive sensor 113 on one side of the first connecting pipe 109 monitors the capacitance changes in the first connecting pipe 109 in real time. When the flow of the drug solution is detected, the signal is transmitted to the control unit, and the control unit starts the laser emitter 112 and the receiver 111. If the test 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 too fast infusion rate is issued.

[0070] When the microfluidic detection mechanism detects an excessively high anesthetic concentration, the control unit calculates the required dilution ratio based on the patient's weight and subsequently controls valve 118 to open. The extrusion mechanism, driven by extrusion spring 121, pushes piston 122, squeezing the diluent (e.g., saline) from reservoir 120 and mixing it with the anesthetic, thereby reducing the anesthetic concentration. The mixed solution enters the patient's veins through the discharge mechanism. The entire adjustment process is rapid and precise, ensuring a stable depth of anesthesia.

[0071] When the anesthetic concentration is too low, the disc's deflection angle is relatively small and cannot reach the first preset angle. In this case, the anesthetic (infused by the syringe pump) accumulates within the deflection groove 101, but due to its low concentration, the driving force exerted on the disc is insufficient. Similarly, if the anesthetic infusion rate is too slow, the amount of liquid entering the deflection groove 101 per unit time is insufficient, making it difficult for the disc to reach the first preset deflection angle.

[0072] At this point, the hydraulic pressure within deflection trough 101 continues to rise until movable plate 115 is squeezed to the point where it is misaligned with the opening of the third connecting pipe, thereby connecting the third connecting pipe to deflection trough 101. Capacitive sensor 113 on one side of third connecting pipe 116 monitors the capacitance changes within third connecting pipe 116 in real time. When it detects the flow of liquid medicine, it transmits a signal to the control unit, which activates laser emitter 112 and receiver 111. If the detection result indicates low concentration, the control unit activates the alarm unit to issue a low concentration alarm signal; if the concentration is normal but the infusion rate is too slow, it issues a slow infusion rate alarm signal.

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

[0074] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and / or characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An anesthesia concentration adjustment and monitoring device for anesthesia department, comprising a carrier (1); characterized in that: A deflection groove (101) is provided in the carrier (1), the deflection groove (101) is connected to a liquid inlet mechanism, a plurality of discs are rotatably connected in the deflection groove (101), a preset distance is provided between adjacent discs, a rotating shaft (102) is axially fixedly connected between adjacent discs, a deflection resistance adjustment mechanism for adjusting the rotation resistance of the disc is provided on any disc, a first transfer channel (105) and a second transfer channel (106) are provided on the rotating shaft (102), 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 a first preset angle, the first transfer channel (105) is connected to the deflection groove (101), and when the deflection angle of the rotating shaft (102) reaches a second preset angle, the second transfer channel (106) is connected to the deflection groove (101); It also includes an acquisition unit, a control unit and an alarm unit; the acquisition unit is used to collect the patient's weight information; the control unit is used to determine the anesthetic concentration range based on the weight information, and to 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.

2. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 1, characterized in that: The deflection resistance adjustment mechanism comprises an adjustment groove (107) provided on one side of the disc, an electromagnet and a magnetic pick (108) being arranged in the adjustment groove (107), the magnetic pick (108) being fixedly connected to the disc, the magnetic pick (108) being rotationally matched with the adjustment groove (107), and the electromagnet being used to generate a repulsive force to hinder the deflection of the magnetic pick (108).

3. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 2, characterized in that: The microfluidic detection mechanism includes a microfluidic chip (110), which is embedded in a carrier (1). The liquid 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 the second transfer channel (106). The liquid outlet of the microfluidic chip (110) is connected to a second connecting pipe (114). The second connecting pipe (114) is connected to the liquid outlet mechanism. A laser emitter (112) and a receiver (111) are respectively provided on both sides of the microfluidic chip (110). The laser emitter (112) and the receiver (111) are both electrically connected to a control unit.

4. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 3, 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 one side of the disc close to the third connecting pipe (116). The movable plate (115) is slidably matched with the deflection groove (101) and the rotating shaft (102) respectively. When the pressure in the deflection groove (101) is higher than a preset pressure, the movable plate (115) overcomes the return spring (117) and moves until the third connecting pipe (116) is connected to the deflection groove (101).

5. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 4, 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 capacitance changes in the first connecting pipe (109). The control unit is used to control the operation of the laser transmitter (112) and the receiver (111) based on the capacitance changes.

6. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 5, characterized in that: A Venturi throat (119) is provided at the connection point between the liquid outlet mechanism and the second connecting pipe (114).

7. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 6, characterized in that: A liquid storage tank (120) is also provided in the carrier (1), the liquid storage tank (120) is connected to the liquid outlet mechanism, a valve (118) is provided on the communication path between the liquid storage tank (120) and the liquid outlet mechanism, and the valve (118) is electrically connected to the control unit.

8. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 7, characterized in that: An extrusion mechanism is provided in the liquid storage tank (120); the extrusion mechanism comprises an extrusion spring (121) and a piston (122); the piston (122) is in sliding cooperation with the liquid storage tank (120); and the extrusion spring (121) is used to support the movement of the piston (122).

9. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 8, characterized in that: A Tesla valve channel is provided in the liquid outlet mechanism.

10. The anesthesia concentration adjustment and monitoring device for anesthesia department according to claim 9, characterized in that: The liquid inlet mechanism is communicated with the deflection groove (101) along a tangential direction of the deflection groove (101).

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