138 results about "Cerebral ventricle" patented technology

The invention provides a ventricular drainage tube clamping device for the neurosurgery department, and belongs to the field of medical instruments. Comprising three elastic telescopic adsorption mechanisms and three pressing type exhaust mechanisms, the second hollow shell is fixedly installed at the end of the upper hollow rod, the interior of the second hollow shell is in a hollow state, and the second hollow shell is communicated with the internal structure of the upper hollow rod; and the piston plate is placed in the second hollow shell and enables gas in the upper hollow rod to be pumped out in the moving process. The outer wall of the soft drainage tube can be fixed in an adsorption mode through the suction force of gas, the working stability of the drainage tube during working can be effectively guaranteed through adsorption type fixing, in addition, the drainage tube can expand outwards at the adsorption fixing part through the elastic acting force of the spring, and therefore the drainage tube can be fixed to the outer wall of the drainage tube. Therefore, normal drainage efficiency of the inner diameter of the drainage tube is ensured.

The invention provides a bendable nerve ventricle endoscope, and relates to the technical field of endoscopes. A bendable nerve ventricle endoscope comprises a handle, the handle is provided with an insertion tube, a bent snake bone is arranged at the end, away from the handle, of the insertion tube, a tip is arranged at the end, away from the insertion tube, of the bent snake bone, and a camera is arranged at the tip; the bent snake bone is hollow, two pull wires are oppositely connected to the inner side wall of the front end of the bent snake bone, the pull wires penetrate through the insertion tube and extend into the handle, and the handle is provided with a traction assembly used for pulling the pull wires. By the adoption of the endoscope, the problems that a traditional cranial nerve operation is large in trauma and large in operation difficulty can be solved, the endoscope is simple in structure, convenient to use, small in trauma and capable of being bent easily, lesions which cannot be displayed by a hard endoscope can be observed, the operation can be conducted at the same time, a safer and more reliable technical means is provided for the cranial nerve operation, and the operation cost is reduced. The operation quality is improved, and the operation complications are reduced.

The present invention relates to the use of selective aquaporin inhibitors, e.g., of aquaporin-4 or aquaporin-2, e.g., certain phenylbenzamide compounds, for the prophylaxis, treatment and control of aquaporin-mediated conditions, e.g., diseases of water imbalance, for example edema (particularly edema of the brain and spinal cord, e.g., following trauma or ischemic stroke, as well as the edema associated with glioma, meningitis, acute mountain sickness, epileptic seizures, infections, metabolic disorders, hypoxia, water intoxication, hepatic failure, hepatic encephalopathy, diabetic ketoacidosis, abscess, eclampsia, Creutzfeldt-Jakob disease, and lupus cerebritis, as well as edema consequent to microgravity and / or radiation exposure, as well as edema consequent to invasive central nervous system procedures, e.g., neurosurgery, endovascular clot removal, spinal tap, aneurysm repair, or deep brain stimulation, as well as retinal edema), as well as hyponatremia and excess fluid retention, and diseases such as epilepsy, retinal ischemia and other diseases of the eye associated with abnormalities in intraocular pressure and / or tissue hydration, myocardial ischemia, myocardial ischemia / reperfusion injury, myocardial infarction, myocardial hypoxia, congestive heart failure, sepsis, and neuromyelitis optica, as well as migraines, as well as to novel assays for identifying aquaporin inhibitors.

The invention relates to the technical field of neurosurgery navigation, in particular to a neurosurgery brain puncture path accurate planning method and system.The neurosurgery brain puncture path accurate planning method comprises the following steps that by obtaining a preoperative brain function area image and nerve fiber bundle data, a function area range and sensitivity are extracted, a focus and cranial entry point path set is constructed, and a path set is established; the method comprises the steps of analyzing the distance between a path and a functional area and a fiber bundle included angle, calculating a functional interaction risk, dividing path sections and calculating the distances to a blood vessel, a ventricle and the functional area, generating obstacle field intensity and calculating a gradient difference, constructing a risk map, scoring candidate paths, and screening an optimal path to generate a puncture result. The method comprises the following steps: extracting a brain function region range and a fiber bundle direction, introducing a function sensitivity parameter, improving tiny damage identification, calculating obstacle field intensity in a path segmentation manner, forming a gradient, dynamically identifying a high-risk region, grading and screening candidate paths by integrating risk factors, performing function protection and risk reduction, and improving path planning refinement and safety.

The invention discloses an accurate regulation and control instrument for ventricular drainage, and relates to the technical field of neurosurgical medical equipment, the accurate regulation and control instrument for ventricular drainage comprises a fish-shaped clamp, the clamp is formed by connecting symmetrical arc-shaped clamping blocks through a rotating shaft, the inner wall of the clamp is provided with a fixing groove and an arc-shaped air bag I, and the air bag I is embedded with a flow sensor and is provided with semispherical anti-skid grains; the clamp is matched with an elastic plate to form fixation, a controller, an air pump and an electromagnetic valve are arranged on the side portion of the clamp, a second pressing type air bag is additionally arranged, an air path is matched with a pressure gauge, and all the components are in signal connection with the controller. During work, the first air bag is inflated to flexibly extrude the drainage tube, the flow sensor collects data in real time, and the controller is linked with the air pump and the electromagnetic valve to regulate and control the opening degree of a tube cavity in a closed loop mode so as to accurately control flow. Continuous drainage is guaranteed through double-mode air supply, operation is convenient through a convenient clamping structure, the precision is high, the device is suitable for drainage tubes of multiple specifications, the medical care load is reduced, and the clinical treatment safety and continuity are improved.

Systems and methods for high-bandwidth, minimally invasive brain-computer interfaces (BCIs) are disclosed. The BCIs are configured for deployment and operation in conjunction with a comprehensive interventional electrophysiology procedural suite. Three primary methods of minimally invasive electrode array delivery are disclosed: (1) cortical surface delivery, (2) ventricular delivery, and (3) endovascular delivery. Additionally, systems and methods for interacting with such high-bandwidth electrode arrays are discussed, including real-time imaging, signal processing, and neural decoding. Systems and methods for architectures for accelerating the underlying computational processes (such as graphics processing units or tensor processing units) are also discussed. Multiple applications of BCIs are discussed, with emphasis on restoration, rehabilitation, and augmentation of neurologic function.

The invention discloses a ventricular drainage tube with a hydrophilic coating and a packaging device of the ventricular drainage tube, and relates to the technical field of medical instruments, and the ventricular drainage tube comprises a drainage tube body which is of a hollow tubular structure; the drainage end is arranged at one end of the drainage tube body, and a plurality of drainage holes are formed in the drainage end; the connecting end is arranged at the other end of the drainage tube body, and a connector used for being connected with an external drainage device is arranged at the connecting end; the outer surface of the drainage tube body is coated with a hydrophilic coating. According to the ventricular drainage tube with the hydrophilic coating, the drainage tube body is of a hollow tubular structure, drainage liquid can enter the drainage tube body through the drainage holes in the drainage end and is drained out of a body through an external drainage device, the hydrophilic coating is arranged on the surface of the drainage tube, friction between the drainage tube and tissue is reduced, and the drainage effect is improved. Meanwhile, substance attachment is inhibited, the drainage effect is improved, and the infection risk is reduced.

The invention discloses a ventricular drainage device, and belongs to the technical field of ventricular drainage, the ventricular drainage device comprises a drainage tube main pipeline and a pressure measuring device, the lower end of the drainage tube main pipeline is provided with a one-way valve I, the drainage tube main pipeline is internally provided with a liquid medicine injection pipeline, and the liquid medicine injection pipeline is internally provided with a one-way valve II; according to the ventricular drainage device, the drainage function, the medicine injection function and the pressure measuring function are integrated, the drainage function is achieved through the drainage tube main pipeline, the medicine injection function is achieved through the liquid medicine injection pipeline, and the pressure measuring function is achieved through the pressure measuring pipeline and the pressure measuring device; according to the multifunctional integrated design, operation risks caused by replacement of multiple instruments are reduced, the clinical operation process is simplified, the treatment efficiency and safety are improved, meanwhile, reflux of liquid medicine or cerebrospinal fluid is effectively prevented through the design of the second one-way valve and the silica gel plug in the liquid medicine injection pipeline, and the risk of intracranial infection is further reduced.

This invention provides a method and system for intelligent monitoring of ventricular drainage based on multimodal sensing. The method includes simultaneously collecting multimodal sensing data of the drainage fluid at the same monitoring point on the drainage tube; the multimodal sensing data includes optical sensing signals and capacitive sensing signals; preprocessing and feature extraction of the multimodal sensing data to obtain standardized multimodal feature vectors; fusing the feature vectors of the multimodal feature vectors and inputting them into a pre-trained multimodal intelligent analysis model, which outputs a risk assessment result of the current drainage status; and executing a corresponding graded response operation based on the risk assessment result, the graded response operation including at least triggering a local audible and visual alarm, overcoming the shortcomings of only monitoring single quantitative information such as intracranial pressure or total drainage volume, while relying on subjective visual observation for qualitative changes.

The invention belongs to the technical field of animal models, and particularly discloses a method for constructing a primary ciliary dyskinesia hydrocephalus model, which comprises the following steps: screening benzimidazole as a molding agent; performing benzimidazole solution administration on the experimental animals, and setting a blank control group; carrying out experimental verification through pathological morphology and behavioral methods; the ventricle of the experimental animal is obviously enlarged, the athletic ability is obviously reduced, and if the condition is met, the primary ciliary dyskinesia hydrocephalus model is successfully constructed. According to the new method for constructing the primary ciliary dyskinesia hydrocephalus model, the constructed hydrocephalus model is good in stability and repeatability, objective, simple and high in operability, and other possible interference factors are reduced; and a necessary experimental basis is provided for research on the mechanism of hydrocephalus caused by primary ciliary dyskinesia and development of treatment means.

A flush assembly for an external ventricular drain (EVD) system, comprising a collapsible upper body and a base, the flush assembly being connected to the EVD via a connector adjacent to the lower end of the flush assembly, and a connecting tube surrounding the connector, the connector crossing the collapsible upper body and / or the base crossing the connector, the flush assembly storing fluid in an internal fluid reservoir, and when the flush assembly is activated, the collapsible upper body pushes the fluid from the internal fluid reservoir to the flushing site to perform flushing of the EVD.

An artificial intelligence (Al) engine is trained on a plurality of annotated magnetic resonance (MR) images of a patient's brain. A plurality of MR images of a patient's head is provided. For each MR image in the plurality of provided MR images, the Al engine detects a plurality of edges of the brain and determine a biparietal diameter (BP) value, detects a plurality of frontal horn edges, and detects a plurality of occipital horn edges. A correction module determines that at least one detected edge is associated with a non -ventricular body and updates the edge to correspond to the applicable horn. The Al engine determines a frontal horn diameter (F) value, and a occipital horn diameter (O) value. An indication module provides an indication on abnormal dilation of the patient's brain ventricles based on a maximum F value, a maximum O value, and the maximum BP value.

The invention belongs to the technical field of medical instruments, and particularly discloses an intracranial pressure monitoring and external ventricular automatic drainage regulation and control device which comprises a sensing module, a lifting module and a control module. The sensing module comprises a pressure sensor and a blood pressure monitor, the pressure sensor is used for monitoring intracranial pressure data, and the blood pressure monitor is used for monitoring blood pressure data; the lifting module is provided with a mounting part, the mounting part is used for mounting a drainage bottle, and the drainage bottle is connected with the brain of a patient through a catheter; the control module is used for periodically executing the following operations: performing statistical analysis based on the intracranial pressure data and the blood pressure data to obtain multiple statistical values; and regulating and controlling the height of the mounting piece in the lifting module based on the plurality of statistical values. According to the device, monitoring data are obtained through the pressure sensor and the blood pressure monitor, statistical analysis and regulation are conducted through the control module, the state of a patient can be obtained in time, automatic regulation is conducted when the intracranial pressure of the patient is too low or too high, and the height of the drainage bottle is efficiently regulated.

The present invention relates to a female neuroendoscope sleeve assembly for deep ventricles, comprising a primary sleeve, a primary sleeve core, a secondary sleeve, and a secondary sleeve core. The primary sleeve and the secondary sleeve can be nested with each other to construct a primary channel, and the secondary sleeve and the secondary sleeve core can be nested with each other and inserted into the primary sleeve to construct a secondary channel. Through the orderly coordination of the various components in the assembly, the replacement between a primary sleeve with a larger diameter and a shorter tube length for shallow brain tissue surgery and a secondary sleeve with a smaller diameter and a longer tube length for deep brain tissue surgery can be completed through coaxial exchange technology. The use of a thinner, more mobile, less brain-damaging, and more accurately positioned secondary sub-tube to enter deep tissue or ventricles is very beneficial to the protection of deep brain functional nuclei and numerous thin-walled arteries and veins in the ventricular wall, reducing surgical side effects, lowering surgical risks, and improving the patient's neurological function prognosis.

The invention discloses an intelligent ventricular drainage tube linkage clamping and closing device. The device comprises a respirator signal acquisition module which is responsible for acquiring sputum suction start-stop signals, filtering, reducing noise and eliminating interference; the clamping execution module is electrically connected with the acquisition module and is used for receiving an instruction to execute clamping and opening actions of the drainage tube; the linkage control module is respectively connected with the acquisition module and the breathing machine, and ensures that clamping is completed before sputum suction or at the same time through data interaction synchronization signals; the user interaction and safety module integrates manual control, state indication and power-off emergency components and can manually control the flow rate of the drainage tube; and the alarm module is connected with the acquisition and execution module, and generates an alarm signal when the system fails, the signal is abnormal or the clamping is abnormal. By means of multi-module linkage, accurate synchronization of sputum suction operation and drainage tube clamping / opening is achieved, intracranial pressure is stabilized, the dual control function, the graded alarm function and the fault self-diagnosis function are combined, clinical operation safety and convenience are improved, and various diagnosis and treatment requirements are met.

This invention discloses a method for constructing an early prediction model of hydrocephalus secondary to intraventricular tumors based on the dynamic changes of inflammatory factors after surgery, belonging to the field of medical data processing and model construction. The method includes: acquiring the concentration values ​​of inflammatory factors and the hydrocephalus outcome of biological samples at multiple postoperative time points; calculating quantitative characteristic parameters characterizing the dynamic evolution of the inflammatory response, such as the dynamic change rate, cumulative load, and acceleration, based on the concentration values; and training a deep learning model using the quantitative characteristic parameters and clinical baseline data as input features, with the hydrocephalus outcome as the label. This invention achieves early quantitative warning of hydrocephalus risk, significantly improving the accuracy, sensitivity, and specificity of prediction. It solves the technical problem of existing technologies relying on post-operative monitoring methods such as imaging and lacking early biochemical warning capabilities.

The invention discloses a neural network-based hydrocephalus imaging feature detection method, electronic equipment and a storage medium, and the method comprises the steps: collecting and marking the brain image data of a normal pressure hydrocephalus patient, and carrying out the preprocessing; segmenting a ventricle region in the thick-layer brain image data by using a neural network to generate a binary image sequence; training a neural network model for interpolation through thin-layer brain image data, and continuously adjusting parameters until the parameters are optimal; inputting the binary segmentation result of the thick-layer image and the original thick-layer image into a trained interpolation network, and outputting a binary segmentation image after interpolation processing; and counting the voxel number of the ventricle part in the binary segmentation image after interpolation, and calculating the actual volume of the ventricle lumen by combining image scanning interval information. According to the method, the error generated when the ventricular volume is calculated through image segmentation when the scanning interval is too large is reduced so as to obtain accurate ventricular volume data, and therefore the computer-aided diagnosis process of hydrocephalus is optimized.

1. The name of this design product: Multifunctional medical measuring ruler. 2. Purpose of this product design: used to measure skin pressure ulcers, ventricular drainage tube height, intra-abdominal pressure monitoring, and joint movement angle. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

Systems and methods for high-bandwidth, minimally invasive brain-computer interfaces (BCIs) are disclosed. The BCIs are configured for deployment and operation in conjunction with a comprehensive interventional electrophysiology procedural suite. Three primary methods of minimally invasive electrode array delivery are disclosed: (1) cortical surface delivery, (2) ventricular delivery, and (3) endovascular delivery. Additionally, systems and methods for interacting with such high-bandwidth electrode arrays are discussed, including real-time imaging, signal processing, and neural decoding. Systems and methods for architectures for accelerating the underlying computational processes (such as graphics processing units or tensor processing units) are also discussed. Multiple applications of BCIs are discussed, with emphasis on restoration, rehabilitation, and augmentation of neurologic function.

The invention provides an injection regulation and control system, method and equipment based on brain planar graph mapping, and relates to the technical field of injection regulation and control. The system comprises a needle inserting position monitoring module, an injection pre-regulation and control module and an injection emergency regulation and control module. The needle insertion position of the injection needle is obtained through the deployed needle insertion position detection tool, then injection presetting is carried out according to the predicted needle insertion position, the electroencephalogram of the injection object is obtained in real time, and when the electroencephalogram of the injection object predicts the neural reaction, the injection object is subjected to neural reaction prediction. If yes, the predicted needle inserting position is matched with the actual needle inserting position to obtain a needle inserting position matching result, and corresponding injection regulation and control are conducted according to the needle inserting position matching result, so that the effect of improving the timeliness of ventricular injection regulation and control of the injection object is achieved. The problem that in the prior art, when the needle inserting position of an injection object deviates, ventricular injection regulation and control response is not timely is solved.

The present application relates to the field of medical device technology, and in particular to a perfusion and drainage system and control method. The system includes: a perfusion unit, a drainage unit, an interactive control unit, and a drainage tube; the interactive control unit is used to obtain intracranial pressure parameters and drainage volume parameters of the patient's ventricles, dynamically determine the current perfusion and drainage mode based on the intracranial pressure parameters and drainage volume parameters, and generate control instructions corresponding to the current perfusion and drainage mode. The current perfusion and drainage mode is one of the normal perfusion and drainage mode, the dredging mode, and the drainage mode. The dredging mode is used to remove the blockage of the drainage tube; the drainage tube is used to connect the perfusion unit and the drainage unit to the patient's ventricles respectively; the perfusion unit and the drainage unit are used to receive the control instructions sent by the interactive control unit, and perfuse and / or drain the patient's ventricles according to the control instructions. The present application simplifies the perfusion and drainage control process and improves treatment efficiency.

The invention relates to an in-utero ventriculoamniotic shunting device that includes a composite shunt tube composed of polymer material, e.g., silicone-based material, and metallic wire, having a bend or curve formed in the length of the shunt tube, with one or more anchors composed of super-elastic wire or mesh, e.g., shape memory alloy wire or mesh structures, attached to the shunt tube, and a one-way passive valve composed of a thin polymer membrane. The anchors are effective to prevent migration and dislodgement of the shunting device following its deployment, and the valve is effective to prevent the backflow of amniotic fluid.

Systems and methods for high-bandwidth, minimally invasive brain-computer interfaces (BCIs) are disclosed. The BCIs are configured for deployment and operation in conjunction with a comprehensive interventional electrophysiology procedural suite. Three primary methods of minimally invasive electrode array delivery are disclosed: (1) cortical surface delivery, (2) ventricular delivery, and (3) endovascular delivery. Additionally, systems and methods for interacting with such high-bandwidth electrode arrays are discussed, including real-time imaging, signal processing, and neural decoding. Systems and methods for architectures for accelerating the underlying computational processes (such as graphics processing units or tensor processing units) are also discussed. Multiple applications of BCIs are discussed, with emphasis on restoration, rehabilitation, and augmentation of neurologic function.

The application relates to a medical image segmentation method and device, computer equipment and a storage medium, wherein the medical image segmentation method comprises the following steps: acquiring a threshold image of a medical image; determining a plurality of connected domains in the threshold image, and generating a connected domain image corresponding to each connected domain; matching the threshold image with a standard template image containing a ventricle region label to obtain an initial ventricle mask image; further, comparing each connected domain image with the initial ventricle mask image, and selecting the connected domain image for fusion based on the comparison result to obtain a target ventricle mask image, thereby solving the problem that the spatial position and shape information of the ventricle is ignored, resulting in inaccurate image segmentation results, and improving the accuracy of the image segmentation result.

The embodiment of the present application relates to the technical field of medical devices, and discloses a retractor and medical equipment, the retractor comprises a dilating piece and a guide piece, the dilating piece is provided with a dilating hole penetrating along a preset direction, the dilating piece is provided with a first end and a second end oppositely arranged along the preset direction; the guide piece is provided with a receiving hole extending along the preset direction, the guide piece is inserted into the dilating hole, and the guide piece at least partially extends out of the second end, and the part of the guide piece extending out of the second end can at least partially transmit light. In the above manner, an endoscope or a ventriculoscope can be received in the receiving hole and shoot images from the second end, which facilitates doctors to locate lesions, thereby reducing the movement of the retractor.

The invention provides a brain organoid / encephalitis B virus infected brain organoid model and a construction method and application thereof, and belongs to the technical field of organoid. The invention provides the kit for constructing the brain organoid, the brain organoid is constructed on the basis of the kit, the construction method of the brain organoid is provided, and the constructed brain organoid model shows clear staged development characteristics, completely reproduces cell diversity in the human brain development process and forms ventricular-like structural characteristics. The encephalitis B virus infected brain organ model constructed on the basis of the obtained brain organs can be used for deeply analyzing the pathogenic process and related immune response characteristics of JEV infected human brain, researching and developing vaccines related to encephalitis B virus and screening antiviral drugs.

The invention discloses an external clamping type external ventricular drainage monitoring and alarming device and a control method, and relates to the field of intelligent medical treatment, and the device comprises an external clamping type flow sensing module, an intelligent alarming module and a safety control module; the outer clamping type flow sensing module is arranged outside the drainage tube, the intelligent alarm module is in communication connection with the flow sensing module, and the safety control module is connected with the alarm module. On the premise that the structure of a traditional drainage tube is not changed, the functions of real-time flow sensing, automatic alarming, excessive drainage, closed-loop control, remote data linkage and the like are achieved, good universal adaptability, operation convenience and intelligent response capacity are achieved, and the drainage monitoring device is particularly suitable for neurosurgery critical patient postoperative external ventricular drainage monitoring scenes and has a wide application prospect. The postoperative management quality and the patient safety level can be obviously improved.

The utility model discloses a ventricular drainage height measuring scale, which comprises a height scale, a transverse scale and an inclined scale, and is characterized in that the transverse scale is slidably arranged on the height scale along the extension direction of the height scale; and the inclined ruler is rotationally fixed at the lower end of the height ruler, and the inclined ruler is obliquely arranged relative to the transverse ruler. During use, the transverse ruler is adjusted to be 15 cm away from the height ruler, then the measuring ruler is placed on the bedside of a patient, the position where the patient is lifted to the 30-degree angle is rapidly found, the height of the drainage bag is adjusted to be 15 cm away from the ear height, the head lifting angle does not need to be measured firstly, and then the horizontal position, flush with the ear, of the drainage bag does not need to be measured; and the placement height of the drainage bag is measured from the horizontal position, so that the measuring efficiency and the adjusting efficiency are correspondingly improved.

This invention discloses a device for assisting in adjusting the posture during endoscopic neurosurgery, relating to the field of medical device technology. It includes a base, a flexible component, and a locking assembly. The base is used to fix the device to the skull of the subject by screws. A first through-hole is provided in the middle of the base, corresponding to a bone window opened on the subject's skull. The lower end of the flexible component is detachably mounted on the base, and the upper end is detachably connected to the locking assembly. The locking assembly is used to lock the endoscopic endoscope. The flexible component includes a flexible tube, the inner cavity of which communicates with the first through-hole. In its natural state, the flexible tube can maintain the locked endoscopic endoscope's posture unchanged. Under a certain force, the flexible tube can bend to change the posture of the locked endoscopic endoscope. The device for assisting in adjusting the posture during endoscopic neurosurgery provided by this invention is easy to adjust and does not occupy bedside space, reducing the probability of the endoscope being unintentionally bumped and changing its posture during surgery.

The invention discloses a flow monitoring and control device for ventricular drainage, and relates to the field of medical drainage instruments, comprising: a drainage assembly comprising a drainage tube, a drainage bottle, an electric three-way valve and a drainage bag connected in sequence; the full-liquid detection module is used for monitoring whether the liquid level in the drainage bottle reaches a full-liquid threshold value or not in real time and generating a full-liquid signal when the liquid level in the drainage bottle is monitored to reach the full-liquid threshold value; the control module is used for controlling the electric three-way valve to be communicated with a passage between the drainage bottle and the drainage bag according to the full-liquid signal from the full-liquid detection module, so that liquid in the drainage bottle flows into the drainage bag under the action of gravity; after it is determined that the liquid in the drainage bottle completely flows into the drainage bag, the electric three-way valve is controlled to turn off a channel between the drainage bottle and the drainage bag, and the drainage amount is determined based on the communication times of the channel between the drainage bottle and the drainage bag and the full liquid capacity of the drainage bottle; and the storage and display module is used for storing and displaying the working state, the communication times, the drainage amount and the like of the electric three-way valve.