Monitor intelligent zero calibration device and zero calibration method

Abstract

The invention provides an intelligent zero calibration device and method for a monitor, the zero calibration device is provided with a drainage mechanism and the monitor, the drainage mechanism is provided with a drainage tube, the drainage mechanism is provided with a three-way valve, and the three-way valve is arranged on the drainage tube; a transmission line is arranged between the monitor and the three-way valve; the monitor is further provided with a plug-in monitor, a pressure sensor, a storage and a controller, the plug-in monitor, the pressure sensor, the storage and the three-way valve are all electrically connected with the controller, the plug-in monitor is arranged at the plug-in connecting base, and the pressure sensor is arranged at one connector of the three-way valve. The controller is used for receiving and analyzing signals transmitted by the plugging monitor and the pressure sensor, and controlling the state of the three-way valve and whether the memory stores the information of the patient; the zero calibration method comprises the following steps: the controller receives signals transmitted by the plugging monitor and the pressure sensor, analyzes a state signal and a pressure signal, and determines whether to perform zero calibration on the monitor according to the state of the monitor; the controller can automatically calibrate zero according to judgment, manual zero calibration is omitted, operation is convenient, time can be saved, patient experience is improved, complicated monitor zero calibration operation is avoided, cost is saved, and efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of monitors, and more particularly to an intelligent zero calibration device and a zero calibration method for a monitor. Background Art

[0002] When the patient's head is injured internally or externally, the injured tissue inside the brain will leak fluid or bleed, causing increased intracranial pressure and a series of serious consequences. Clinically, surgical drainage must be performed outside the brain or outside the lesion to relieve symptoms, reduce intracranial pressure, and provide treatment.

[0003] Drainage devices are usually composed of a suspension device, a drip bucket, a liquid storage bag, a pressure regulator, and a drainage tube. The drainage tube is inserted into the intracranial fluid accumulation site, and the fluid is drained into the drip bucket through a catheter, and then discharged into the liquid storage bag. The drainage pressure is set by the suspension device and the pressure regulator. The liquid storage bag is affected by many factors such as the specific gravity, filling degree, and flow rate of the drained liquid, which can easily cause the bag to deform and lead to inaccurate measurement. In order to measure accurately, nursing staff often pour the liquid in the drainage bag into a measuring cylinder and re-measure it.

[0004] The existing drainage equipment and monitors mainly have the following problems: during the drainage process of the drainage device, the pressure of the intracranial fluid cannot be monitored at any time. If you want to monitor the current pressure of the intracranial fluid, the operation is cumbersome and easy to cause pollution; before using the monitor, the sensor needs to be manually zeroed, and the operation is very complicated. Each time the zeroing is performed, the three-way switch on the consumable needs to be manually switched to the atmosphere or saline channel, and then the zeroing button on the monitor needs to be operated, which is time-consuming and labor-intensive and has very low efficiency; during the ICP monitoring process, when the patient needs to undergo CT, X-ray and other examinations or go to the toilet, he needs to be disconnected from the monitor for a period of time. Each time the monitor is reconnected, it needs to be zeroed, which is cumbersome and time-consuming, affecting the patient's clinical experience. Summary of the invention

[0005] The purpose of the present invention is to make up for the deficiencies of the prior art and provide a monitor intelligent zero calibration device and zero calibration method. The technical solution adopted in this application is:

[0006] A monitor intelligent zeroing device is provided, which is provided with a drainage mechanism and a monitor, wherein the drainage mechanism is provided with a drainage tube, and is characterized in that the drainage mechanism is provided with a three-way valve, which is arranged on the drainage tube; the monitor is provided with a plug-in connection seat, and a transmission line is provided between the plug-in connection seat and the three-way valve; the monitor is also provided with a plug-in monitor, a pressure sensor, a memory and a controller, wherein the plug-in monitor, the pressure sensor, the memory and the three-way valve are all electrically connected to the controller, the plug-in monitor is arranged at the plug-in connection seat, the pressure sensor is arranged at an interface of the three-way valve, and the memory is used to store patient information, pressure signals, and zeroing time, zeroing results and zero value information; the controller is used to receive and analyze signals transmitted by the plug-in monitor and the pressure sensor, and control the state of the three-way valve and whether the memory saves patient information.

[0007] Preferably, the drainage mechanism is also provided with a drainage bottle and a drainage elbow, the drainage elbow is arranged in the drainage bottle; the drainage elbow is arranged at the tail end of the drainage tube and is connected to the drainage tube, and the drainage elbow is provided with a downward drainage outlet; the drainage bottle is provided with an exhaust pipe and an air-stop clamp, the air-stop clamp is arranged on the exhaust pipe, the exhaust pipe is arranged at the upper part of the drainage bottle and is connected to the drainage bottle, and the outer end of the exhaust pipe is provided with an exhaust port.

[0008] Preferably, the drainage mechanism is further provided with an adjustment mechanism, which is provided with an adjustment track and an adjustment block, and the adjustment block is movably arranged on the adjustment track; the adjustment track is vertically arranged, and the drainage bottle and the drainage elbow are both linked to the adjustment block.

[0009] Preferably, a liquid collecting belt and a liquid draining pipe are also provided. The liquid collecting belt is provided below the drainage bottle, and the liquid draining pipe is provided between the drainage bottle and the liquid collecting belt and connects the drainage bottle and the liquid collecting belt. A drip bottle and a liquid stopping clamp are provided on the liquid draining pipe.

[0010] Preferably, the drainage mechanism is further provided with a flow regulator and a needle connector, the needle connector is arranged at the front end of the drainage tube, the flow regulator is sleeved outside the drainage tube, and the flow regulator is arranged between the needle connector and the three-way valve.

[0011] Preferably, the plug-in monitor is provided with a plug-in analog-to-digital conversion chip, and the plug-in analog-to-digital conversion chip is used to convert the state signal monitored by the plug-in monitor into a digital signal and transmit it to the controller.

[0012] Preferably, the pressure sensor is provided with a pressure analog-to-digital conversion chip, and the pressure analog-to-digital conversion chip is used to convert the pressure signal monitored by the pressure sensor into a digital signal and transmit it to the controller.

[0013] A method for intelligent zero calibration of a monitor, the specific steps are:

[0014] Plug and unplug signal collection: The plug and unplug monitor monitors the status of the plug and unplug connector and transmits the monitored status signal to the controller;

[0015] Pressure signal acquisition: The pressure sensor monitors the pressure in the three-way valve and transmits the monitored pressure signal to the controller;

[0016] Signal analysis: The controller receives the signals transmitted by the plug-in monitor and the pressure sensor, analyzes the status signal and the pressure signal, and determines whether to calibrate the monitor to zero based on the status of the monitor;

[0017] Zero calibration: The controller sends a control signal to the three-way valve, and the three-way valve adjusts its state according to the control signal so that the three-way valve is connected to the atmosphere. The pressure sensor monitors the pressure signal at this time and records it as zero value.

[0018] Storage: The memory stores the information of zero calibration time, zero calibration result and zero value.

[0019] Preferably, the plug-in signal collection includes: a plug-in monitor monitors the voltage of the plug-in connector and generates a voltage signal, performs digital filtering on the voltage signal, and generates a status signal of a digital signal type.

[0020] Preferably, the pressure sensor is provided with a pressure analog-to-digital conversion chip, and the pressure analog-to-digital conversion chip is used to convert the pressure signal monitored by the pressure sensor into a digital signal and transmit it to the controller.

[0021] Preferably, the status of the monitor includes an operating state and a standby state. When the monitor is in the standby state, zero calibration will be performed; the standby state includes an initial state, a power-off restart state, and a transport state.

[0022] Preferably, the monitor is in operation, and the monitor is restarted due to an emergency. The controller analyzes the status signal and the pressure signal, and can determine whether to exempt zero calibration according to the duration of the emergency.

[0023] The advantages of the present invention are as follows:

[0024] Intelligent zeroing equipment, the three-way valve can automatically adjust its state according to the control signal sent by the controller; before the monitor starts to monitor the patient, in order to ensure that the pressure signal of the monitor monitoring the intracranial pressure is accurate and the pressure signal is pulsating and drift-free, the pressure sensor needs to be zeroed relative to the atmosphere, and the three-way valve is adjusted to be connected to the atmosphere. The pressure sensor monitors the pressure signal at this time and transmits it to the monitor through the transmission line. The memory records it as a zero value, realizing automatic zeroing of the monitor; the state of the three-way valve is adjusted to stop the flow of the accumulated fluid in the drainage tube, and the pressure sensor is connected to the intracranial fluid. The pressure sensor detects the pressure of the intracranial fluid and generates a pressure signal. The pressure signal is transmitted to the monitor through the transmission line, and the monitor can accurately monitor and display the pressure of the intracranial fluid.

[0025] Intelligent zeroing method, the controller receives the signals transmitted by the plug-in monitor and the pressure sensor, analyzes the status signal and the pressure signal, and confirms whether to zero the monitor according to the status of the monitor; the controller can automatically zero based on judgment, eliminating the need for manual zeroing, which is easy to operate and can save time, improve the patient experience, solve the complicated monitor zeroing operation, save costs and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative labor.

[0027] Figure 1 is a schematic diagram of a zero calibration device of the present invention;

[0028] Figure 2 It is a flow chart of the zero calibration method of the present invention.

[0029] Explanation of symbols in the figure:

[0030] 1 is a drainage mechanism, 11 is a drainage tube, 12 is a three-way valve, 13 is a mounting plate, 14 is a flow regulator, 15 is a needle connector, 16 is a drainage bottle, 161 is an exhaust pipe, 1611 is an exhaust port, 162 is an air stop clamp, 17 is a drainage elbow, 171 is a drainage outlet, 18 is an adjustment mechanism, 181 is an adjustment track, and 182 is an adjustment block;

[0031] 2 is a monitor, 21 is a plug-in connector, 22 is a pressure sensor, and 23 is a transmission line;

[0032] 3 is a liquid collecting belt, 31 is a liquid discharging pipeline, 311 is a dropper bottle, and 312 is a liquid stopping clamp. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] The intelligent zeroing device and zeroing method for a monitor provided in the embodiments of the present application are now described.

[0035] like Figure 1As shown, a monitor intelligent zero calibration device is provided with a drainage mechanism 1 and a monitor 2, wherein the drainage mechanism 1 is provided with a drainage tube 11; the drainage mechanism 1 is provided with a three-way valve 12, and the three-way valve 12 is provided on the drainage tube 11; the monitor 2 is provided with a plug-in connector 21, and a transmission line 23 is provided between the plug-in connector 21 and the three-way valve 12; the monitor 2 is also provided with a plug-in monitor, a pressure sensor 22, a memory and a controller, and the plug-in monitor, the pressure sensor 22, the memory and the three-way valve are all electrically connected to the controller; the plug-in monitor is provided at the plug-in connector 21, and is used to monitor the state of the plug-in connector 21; the pressure sensor 22 is provided at an interface of the three-way valve 12, and is used to monitor the pressure in the three-way valve 12, and the memory is used to store the patient's data, pressure signal, and zero calibration time, zero calibration result and zero value information; the controller is used to receive and analyze the signals transmitted by the plug-in monitor and the pressure sensor 22, and control the state of the three-way valve 12 and whether the memory saves the patient's information. In this embodiment, the three-way valve 12 adopts a two-position three-way valve.

[0036] When the patient's head is injured, the injured tissue inside the skull will exude fluid or bleed, or the rate of absorption of intracranial fluid is lower than the rate of secretion of intracranial fluid, which will cause increased intracranial pressure. The drainage mechanism 1 will drain the excess intracranial fluid, and the monitor 2 is used to monitor the intracranial pressure to avoid excessive discharge of intracranial fluid and cause excessive low intracranial pressure, and jointly maintain the stability of intracranial pressure. During the process of draining the intracranial fluid, the drainage tube 11 needs to be inserted into the skull, and the intracranial fluid is drained through the drainage tube 11.

[0037] The three-way valve 12 can automatically adjust its state according to the control signal sent by the controller; before the monitor 2 starts to monitor the patient, in order to ensure that the pressure signal of the monitor 2 monitoring the intracranial pressure is accurate and the pressure signal is pulsating and drift-free, it is necessary to zero the pressure sensor 22 relative to the atmosphere, adjust the three-way valve 12 to connect with the atmosphere, and the pressure sensor 22 monitors the pressure signal at this time and transmits it to the monitor 2 through the transmission line 23. The memory records it as a zero value, thereby realizing automatic zeroing of the monitor 2.

[0038] During the process of draining out the intracranial fluid, the state of the three-way valve 12 is adjusted so that the drainage tube 11 is in a connected state, and the excess intracranial fluid can be drained out; the state of the three-way valve 12 is adjusted so that the fluid in the drainage tube 11 stops flowing, and the pressure sensor 22 is connected to the intracranial fluid. The pressure sensor 22 detects the pressure of the intracranial fluid and generates a pressure signal. The pressure signal is transmitted to the monitor 2 through the transmission line 23. The monitor 2 can accurately monitor and display the pressure of the intracranial fluid.

[0039] The drainage mechanism 2 is further provided with a drainage bottle 16 and a drainage elbow 17 . The drainage elbow 17 is arranged in the drainage bottle 16 ; the drainage elbow 17 is arranged at the tail end of the drainage tube 11 and is connected to the drainage tube 11 . The drainage elbow 17 is provided with a downward drainage outlet 171 .

[0040] The position of the drainage outlet 171 is higher than the liquid level in the drainage bottle 16 to ensure that the accumulated fluid does not flow back. By observing whether there is accumulated fluid flowing out of the drainage outlet 171 and the liquid height in the drainage bottle 16, it is possible to confirm whether the accumulated fluid in the drainage tube 11 is flowing and roughly understand the drainage speed at this time.

[0041] The drainage bottle 16 is provided with an exhaust pipe 161 and an air-stopping clamp 162 . The air-stopping clamp 162 is provided on the exhaust pipe 161 . The exhaust pipe 161 is provided at the upper part of the drainage bottle 16 and is connected with the drainage bottle 16 . An exhaust port 1611 is provided at the outer end of the exhaust pipe 161 .

[0042] The exhaust pipe 161 and the exhaust port 1611 are used to maintain pressure balance when the accumulated fluid flows into and out of the drainage bottle 16 .

[0043] The drainage mechanism 2 is also provided with an adjustment mechanism 18 , which is provided with an adjustment track 181 and an adjustment block 182 , and the adjustment block 182 is movably arranged on the adjustment track 181 ; the adjustment track 181 is vertically arranged, and the drainage bottle 16 and the drainage elbow 17 are both linked with the adjustment block 182 .

[0044] The regulating mechanism 18 can adjust the liquid pressure of the drainage outlet 171 by adjusting the height of the drainage bottle 16 and the drainage elbow 17, thereby adjusting the pressure difference between the front and rear ends of the drainage tube 11, and then adjusting the flow rate of the accumulated fluid in the drainage tube 11 to control the drainage speed of the intracranial fluid.

[0045] In this embodiment, the drainage mechanism 1 is further provided with a mounting plate 13 , which is vertically arranged; the three-way valve 12 , the drainage bottle 16 , the drainage elbow 17 and the adjustment track 181 are all installed on the side of the mounting plate 13 .

[0046] A liquid collecting belt 3 and a liquid drainage pipe 31 are also provided. The liquid collecting belt 3 is provided below the drainage bottle 16. The liquid drainage pipe 31 is provided between the drainage bottle 16 and the liquid collecting belt 3 and connects the drainage bottle 16 and the liquid collecting belt 3. A dropper bottle 311 and a liquid stop clamp 312 are provided on the liquid drainage pipe 31.

[0047] The accumulated liquid in the drainage bottle 16 can flow into the liquid collecting belt 3 through the drainage pipe 31. The flow and flow rate of the accumulated liquid in the drainage pipe 31 can be observed through the dropper bottle 311. The liquid stop clamp 312 is used to control whether the drainage pipe 31 is connected.

[0048] The drainage mechanism 1 is also provided with a flow regulator 14 and a needle connector 15 . The needle connector 15 is arranged at the front end of the drainage tube 11 . The flow regulator 14 is sleeved outside the drainage tube 11 . The flow regulator 14 is arranged between the needle connector 15 and the three-way valve 12 .

[0049] The needle connector 15 is used to be inserted into the skull and communicate with the intracranial fluid accumulation; the flow regulator 14 controls the minimum diameter of the drainage tube 11 by adjusting the degree of flattening of the drainage tube 11, thereby adjusting the flow rate of the fluid accumulation.

[0050] The plug-in monitor is provided with a plug-in analog-to-digital conversion chip. The plug-in monitor detects the slight change in voltage caused by plugging and unplugging the plug connector 21. The plug-in analog-to-digital conversion chip is used to convert the status signal monitored by the plug-in monitor into a digital signal and transmit it to the controller.

[0051] The pressure sensor 22 is provided with a pressure analog-to-digital conversion chip, and the pressure analog-to-digital conversion chip is used to convert the pressure signal monitored by the pressure sensor 22 into a digital signal and transmit it to the controller.

[0052] like Figure 1 and Figure 2 As shown, a method for intelligent zero calibration of a monitor, the specific steps are:

[0053] Plug and unplug signal collection: The plug and unplug monitor monitors the state of the plug and unplug connector 21 and transmits the monitored state signal to the controller;

[0054] Pressure signal acquisition: The pressure sensor 22 monitors the pressure in the three-way valve 12 and transmits the monitored pressure signal to the controller;

[0055] Signal analysis: The controller receives the signals transmitted by the plug-in monitor and the pressure sensor 22, analyzes the status signal and the pressure signal, and determines whether to calibrate the monitor 2 to zero according to the status of the monitor 2;

[0056] Zero calibration: The controller sends a control signal to the three-way valve 12, and the three-way valve 12 adjusts its state according to the control signal so that the three-way valve 12 is connected to the atmosphere. The pressure sensor 22 monitors the pressure signal at this time and records it as zero value;

[0057] Storage: The memory stores the information of zero calibration time, zero calibration result and zero value.

[0058] The three-way valve 12 adjusts its state according to the control signal so that the three-way valve 12 is connected to the atmosphere. The pressure sensor 22 monitors the pressure signal at this time and records it as zero. The pressure signal of the intracranial effusion subsequently detected by the pressure sensor 22 is an accurate value relative to the zero value, ensuring that the pressure signal monitored by the pressure sensor 22 is pulsating and drift-free. The controller receives the signals transmitted by the plug-in monitor and the pressure sensor 22, and analyzes the state signal and the pressure signal, and confirms whether to calibrate the monitor 2 to zero according to the state of the monitor 2. The controller can automatically calibrate to zero based on judgment, eliminating the need for manual zeroing, which is easy to operate and can save time, improve the patient experience, solve the complicated monitor zeroing operation, save costs, and improve efficiency.

[0059] The plug-in signal collection includes: the plug-in monitor monitors the voltage of the plug-in connector 21, performs digital filtering on the voltage signal of the plug-in connector 21, and generates a status signal of a digital signal type.

[0060] The pressure signal acquisition includes: the pressure sensor 22 monitors the pressure in the three-way valve 12, performs digital filtering on the pressure signal, and generates a pressure signal of a digital signal type.

[0061] The status of the monitor 2 includes a running status and a standby status. When the monitor 2 is in the standby status, it will automatically perform zero calibration; the standby status includes an initial status, a power-off restart status, and a transport status.

[0062] The transfer state refers to the situation where the patient needs to disconnect the monitor 2 because he / she leaves the monitoring bed, including when the patient needs to undergo CT, X-ray or go to the toilet; the power-off restart state refers to the situation where the monitor 2 restarts due to an emergency; the initial state refers to the situation where the monitor 2 starts to monitor the patient due to the patient's condition.

[0063] In the transport state or power-off restart state, the controller will analyze the state signal and pressure signal, first determine whether the monitored patient has been replaced, and then confirm whether to exempt zero calibration based on the length of time the monitor 2 has been disconnected from monitoring; if the monitored patient has not been replaced and the length of time the monitor 2 has been disconnected from monitoring does not exceed the specified time, zero calibration can be exempted; otherwise, the monitor 2 will automatically perform zero calibration, eliminating manual operation steps and saving time, thereby improving the patient experience.

[0064] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An intelligent zero calibration device for a monitor, comprising a drainage mechanism and a monitor, wherein the drainage mechanism is provided with a drainage tube, and wherein: The drainage mechanism is provided with a three-way valve, which is arranged on the drainage tube; the monitor is provided with a plug-in connection socket, and a transmission line is provided between the plug-in connection socket and the three-way valve; the monitor is also provided with a plug-in monitor, a pressure sensor, a memory and a controller, and the plug-in monitor, the pressure sensor, the memory and the three-way valve are all electrically connected to the controller, the plug-in monitor is arranged at the plug-in connection socket, the pressure sensor is arranged at an interface of the three-way valve, and the memory is used to store patient information, pressure signals, and zero calibration time, zero calibration results and zero value information; the controller is used to receive and analyze the signals transmitted by the plug-in monitor and the pressure sensor, and control the state of the three-way valve and whether the memory saves the patient's information.

2. The intelligent zero calibration device for a patient monitor according to claim 1, characterized in that: The drainage mechanism is also provided with a drainage bottle and a drainage elbow, wherein the drainage elbow is arranged in the drainage bottle; the drainage elbow is arranged at the tail end of the drainage tube and is connected with the drainage tube, and the drainage elbow is provided with a downward drainage outlet; the drainage bottle is provided with an exhaust pipe and an air-stop clamp, wherein the air-stop clamp is arranged on the exhaust pipe, the exhaust pipe is arranged at the upper part of the drainage bottle and is connected with the drainage bottle, and the outer end of the exhaust pipe is provided with an exhaust port.

3. The intelligent zero calibration device for a patient monitor according to claim 2, characterized in that: The drainage mechanism is also provided with an adjustment mechanism, which is provided with an adjustment track and an adjustment block, and the adjustment block is movably arranged on the adjustment track; the adjustment track is vertically arranged, and the drainage bottle and the drainage elbow are both linked to the adjustment block.

4. The intelligent zero calibration device for a patient monitor according to claim 3, characterized in that: A liquid collecting belt and a liquid draining pipe are also provided. The liquid collecting belt is provided below the drainage bottle. The liquid draining pipe is provided between the drainage bottle and the liquid collecting belt and connects the drainage bottle and the liquid collecting belt. A drip bottle and a liquid stopping clamp are provided on the liquid draining pipe.

5. The intelligent zero calibration device for a patient monitor according to claims 1 to 4, characterized in that: The drainage mechanism is also provided with a flow regulator and a needle connector. The needle connector is arranged at the front end of the drainage tube, the flow regulator is sleeved outside the drainage tube, and the flow regulator is arranged between the needle connector and the three-way valve.

6. A method for intelligent zero calibration of a monitor, using the intelligent zero calibration device of a monitor as claimed in any one of claims 1 to 5, characterized in that: The specific steps are: Plug and unplug signal collection: the plug and unplug monitor monitors the state of the plug and unplug connector and transmits the monitored state signal to the controller; Pressure signal acquisition: the pressure sensor monitors the pressure in the three-way valve and transmits the monitored pressure signal to the controller; Signal analysis: the controller receives the signals transmitted by the plug-in monitor and the pressure sensor, analyzes the status signal and the pressure signal, and determines whether to calibrate the monitor to zero based on the status of the monitor; Zero calibration: the controller sends a control signal to the three-way valve, and the three-way valve adjusts its state according to the control signal so that the three-way valve is connected to the atmosphere. The pressure sensor monitors the pressure signal at this time and records it as a zero value; Storage: The memory stores information on zero calibration time, zero calibration result and zero value.

7. The intelligent zero calibration method for a patient monitor according to claim 6, characterized in that: The plug-in signal collection includes: the plug-in monitor monitors the voltage of the plug-in connector and generates a voltage signal, performs digital filtering on the voltage signal, and generates a status signal of a digital signal type.

8. The intelligent zero calibration method for a patient monitor according to claim 6, characterized in that: The pressure signal acquisition includes: the pressure sensor monitors the pressure in the three-way valve and generates a pressure signal, and performs digital filtering on the pressure signal to generate a pressure signal of a digital signal type.

9. The intelligent zero calibration method for a patient monitor according to claim 6, characterized in that: The status of the monitor includes a running state and a standby state. When the monitor is in the standby state, zero calibration will be performed; the standby state includes an initial state, a power-off restart state, and a transport state.

10. The intelligent zero calibration method for a patient monitor according to claim 9, characterized in that: When the monitor is restarted due to an emergency, the controller analyzes the status signal and the pressure signal, and can determine whether to exempt from zero calibration according to the duration of the emergency.

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