327 results about "Respiration" patented technology

The invention relates to a food fresh-keeping method, device and equipment and a storage medium, and the method comprises the steps: collecting respiration intensity data and decay gas concentration of target food in a cold chain carriage, carrying out fresh-keeping threshold matching, and generating food fresh-keeping information; real-time environment parameters of the cold chain compartment are collected, a fresh-keeping instruction is generated according to the food fresh-keeping information and the real-time environment parameters, and an air adjusting valve opening instruction and a compressor frequency instruction are obtained; dynamic regulation and control operation is executed based on the air regulating valve opening instruction and the compressor frequency instruction, and putrefying bacterium comprehensive evaluation indexes and compressor power consumption data are obtained in real time; and according to the putrefying bacterium comprehensive evaluation index and the compressor power consumption data, instruction feedback analysis is carried out, strategy construction is carried out, and a fresh-keeping regulation and control strategy is output. The air conditioning and refrigeration strategy can be dynamically adjusted according to the breathing characteristics of different foods and the growth dynamic state of putrefying bacteria.

The invention belongs to the technical field of medical imaging and digital twinning, and discloses a thoracic cavity whole organ system level lung four-dimensional EIT detection digital motif and a library building method, and the method comprises the following steps: S1) segmenting multiple organs such as double lungs, heart, sternum, rib and thoracic vertebra central axis skeleton, main bronchus and esophagus based on an individual CT image, and building a three-dimensional geometric model integrated with an EIT electrode array; s2) simulating breathing dynamic deformation by using a solid mechanical model; s3) establishing a coupling relationship between deformation and conductivity, and generating dynamic three-dimensional conductivity distribution; s4) solving an electromagnetic field positive problem, and generating a virtual EIT voltage database synchronous with respiration; the invention also covers pathological model integration and data enhancement strategies. According to the method, a high-fidelity, large-scale and diversified EIT virtual data set can be generated, core data support is provided for training and verifying an AI intelligent reconstruction algorithm, and a model foundation is laid for developing a lung function dynamic digital twinning system.

The invention discloses a fresh commodity after-ripening regulation and control planning method oriented to maturity grading, and relates to the technical field of food science and biologication.The method comprises the steps that physiological parameters of fresh commodities are collected in real time based on a multi-modal sensor, and the physiological parameters comprise the epidermis pigment content, the ethylene release rate, the fruit hardness and the respiration intensity; the collected physiological parameters are input into a multi-objective optimization model based on deep learning, the model fuses a metabolic kinetic equation and an LSTM time sequence prediction algorithm, and a regulation and control parameter combination adaptive to the current mature stage is output; according to the regulation and control parameter combination, the temperature, the relative humidity and the O2 / CO2 concentration gradient of the controlled atmosphere storage equipment are synchronously regulated through a distributed control system, and a plant hormone antagonist is injected through an ultrasonic atomization device; and constructing a supply chain collaborative network based on a block chain technology, binding a grading result with logistics path planning, and adjusting a temperature control strategy and a shelf life countdown parameter of the cold chain transport vehicle in real time through an edge computing node.

The invention provides an intelligent identification and alarm method for respiratory suppression events in an anesthesia revival period, which comprises the following steps of: continuously acquiring high-frequency physiological data such as respiration, blood oxygen and electrocardio of a patient through multi-channel equipment, and establishing a dynamic causal network model fusing medical priori knowledge and clinical guidelines after standardized processing and feature extraction; a Granger causal test and a dynamic time warping algorithm are combined, a significant causal relationship among key physiological parameters is dynamically identified, a causal network structure is updated in real time, a causal analysis result is further input into a time sequence Bayesian network, calculation of a respiratory suppression event occurrence probability and reasoning path tracing are realized, and the probability of occurrence of a respiratory suppression event is calculated. According to the method and the system, the probability score is calculated, an interpretable medical logic evidence chain and thermodynamic diagram visualization are automatically generated, and if the probability score exceeds the limit, multi-mode alarm and data locking are synchronously triggered, so that the timeliness, intelligence and interpretability of respiratory suppression detection are improved, and clinical precise intervention is facilitated.

The invention discloses a multi-factor coupling ganoderma lucidum environment digital twinborn regulation and control method oriented to high-yield requirements, particularly relates to the technical field of intelligent cultivation of edible mushrooms, and is used for solving the problems of equipment action oscillation and recessive physiological stress caused by physiological response hysteresis of ganoderma lucidum in an existing environment regulation and control system. Carbon dioxide concentration and illumination intensity predicted values are generated in real time by constructing ganoderma lucidum growth digital twins, and an oxidative stress mark is activated by combining hypha respiratory entropy matching degree analysis and an active oxygen accumulation curve; when the matching degree exceeds a threshold value and oxidative stress exists, a metabolic overload signal is generated, and whether the carbon dioxide predicted value is in a physiological hysteresis interval or not is judged; delay compensation and metabolic overload suppression coefficient adjustment are performed on the carbon dioxide predicted value in the delay interval; and finally, inputting the compensated carbon dioxide value and the illumination prediction value into an environment factor coordination rule base, generating a ventilation opening degree and light supplementing power instruction to drive execution equipment, and ensuring the morphological development stability of the sporocarp and the synthesis efficiency of the active component.

The invention discloses a PET / MR (positron emission tomography / magnetic resonance) all-in-one machine-based dynamic attenuation correction and respiratory and cardiac dual motion correction method. The method comprises the following steps of: generating a dynamic mu graph of a respiratory cycle; mR cardiac function movie sequence scanning of the cardiac cycle; accurately segmenting the cardiac muscle; 6, performing tissue segmentation on the dynamic mu graph; clustering the PET data; pET data space-time registration is carried out; merging PET data of the same time phase; performing frame-by-frame dynamic attenuation correction; respiratory movement correction; correcting a partial volume effect; carrying out myocardial MR image space standardization on different time phases of the cardiac cycle; and carrying out spatial standardization on the myocardial PET image of different time phases in the cardiac cycle. According to the method, the mu graph of the respiration and cardiac cycles is reconstructed through time-phase sharing and is accurately registered with the PET data, so that the high-quality attenuation correction of the heart PET image is realized and the motion correction is completed at the same time.

The invention is a system for continuous monitoring of respiratory and gastric functions using wearable devices. Each device includes a three-axis accelerometer and optionally a gyroscopic sensor. They feature wireless communication for data transmission and means for attachment to the skin. A computation device analyzes the data, using a machine learning model to detect coughing, swallowing and respiration. The method involves placing sensors on the skin of the cricoid region and epigastric region, filtering and transmitting data, training the model, and plotting coughing frequency. This system enhances detection accuracy and facilitates early medical interventions, benefiting chronic condition management and postoperative care.

The invention discloses a rice large-scale metabolism regulator DGP1 and crop metabolism quality design. The invention finds that the structural domain of the rice DGP1 family protein TIGR01589 targets a plurality of metabolic enzymes and promotes the metabolic enzymes to be transferred to a cell nucleus; the structural domain also has an intervention effect on a light breathing pathway by changing the composition of a glycine decarboxylase compound in mitochondria. Based on a molecular mechanism of DGP1, a chimeric protein ST containing a conservative structural domain and coupled with a chloroplast positioning signal is designed, and genetic engineering modification of pakchoi is realized. The modification strategy not only can guide substrate flow of a central glycolysis pathway to flavonoid biosynthesis, but also can promote accumulation of saccharides derived from photosynthetic products in leaves.

The invention relates to the field of biosensors, and discloses a cardiovascular data monitoring method for the cardiovascular medicine department. According to the method, electrocardio, respiration and blood oxygen signals are synchronously collected through a non-invasive terminal, sleep apnea events are analyzed and recognized in a combined mode, the electrocardio signals are deeply analyzed to detect cardiovascular abnormalities, and time sequence characterization of the function state of the autonomic nervous system is generated based on heart rate variability; and further constructing a time sequence causal reasoning model, quantifying the triggering effect of the respiratory event on the cardiovascular event, generating a comprehensive night cardiovascular risk layering index, and triggering graded early warning. According to the invention, non-sensitive, long-time-history and high-precision night cardiovascular risk dynamic assessment and causal mechanism analysis are realized.

The invention discloses a mosquito control method and system based on carbon dioxide luring and powerful airflow repelling. The method comprises the steps that carbon dioxide airflow simulating human respiration is released in a preset attracting area to attract mosquitoes; monitoring whether mosquitoes enter a preset defense range or not in real time; when mosquitoes enter, the airflow injection unit is controlled to output pulse type strong airflow to flush away the mosquitoes, and meanwhile the concentration of carbon dioxide is diluted to destroy the smell positioning capacity of the mosquitoes. And repeating the steps to continuously form the dynamic protection field. The whole process of the method does not contain any catching and killing step, so that'only repelling but not killing 'is realized. The system supports multiple modes of automation, timing, manual operation and silence, COs can be generated by adopting DAC materials through biological fermentation or chemical slow release, and different cost requirements are met. The technical prejudice that mosquito prevention must be killed is overcome, non-killing mosquito management is achieved for the first time, and the method can be widely applied to courtyards, baby rooms, temples, ecological communities and other places and is environmentally friendly and free of pollution.

The invention discloses a pet physiological and psychological collaborative treatment system and method, and relates to the technical field of pet medical treatment, and the method comprises the following steps: continuously obtaining first behavior data, first respiration data and first physiological data of a pet at a time window; performing spatio-temporal change analysis on the first behavior data to obtain second behavior data representing behavior complexity; and performing nonlinear calculation on the first breathing data and the second behavior data to obtain second breathing data. According to the scheme, abnormal fluctuation caused by psychological factors is effectively separated through phase difference analysis and nonlinear calculation, in addition, judgment standards can be adaptively adjusted according to individual differences through dynamic clustering and mapping modeling, the suitability of a treatment scheme is remarkably improved, and accurate recognition and quantitative evaluation of the psychological stress state of the pet are achieved.

The invention discloses a method for detecting heart rate, respiration and oxyhemoglobin saturation based on micro-vibration images, and belongs to the technical field of physiological detection and image processing. A camera collects facial micro-vibration videos of a testee in real time, uses an ROI algorithm to lock a facial key area, extracts RGB micro-vibration change signals to replace red light and near-red light signals, and determines whether the micro-vibration videos are abnormal or not; performing wavelet transform five-layer decomposition, three rounds of peak valley screening and abnormal value elimination on the RGB microvibration time sequence signal, performing fine tuning training by using a yov11 model, and calculating to obtain heart rate, respiration and blood oxygen physiological indexes. According to the invention, non-contact detection is realized through video acquisition and signal processing of micro-vibration of a face area, and the comfort level and the use convenience of a testee are improved; interference caused by motion artifacts, baseline drift and expression changes is eliminated through multi-scale wavelet denoising; the three-wheel peak-valley screening algorithm deeply excavates the features of the face micro-vibration signals, and the recognition accuracy of the signal peak-valley pairs is improved; and an abnormity elimination and self-feedback parameter adjustment mechanism improves the calculation precision.

The invention discloses application of theanine in a preservative and a method for relieving cold injury of respiratory climacteric fruits, and belongs to the technical field of cold injury resistance. Firstly, the invention provides an application of theanine, and the theanine is used for preparing the preservative for relieving the cold injury of the respiratory climacteric fruits. Meanwhile, the theanine aqueous solution is used for preparing the fresh-keeping liquid for relieving the cold injury of the respiratory climacteric fruits. Based on the fresh-keeping liquid, the specific use method comprises the following steps: respectively placing the respiratory climacteric fruits in the theanine solution with the concentration of 5-20 mmol / L, soaking for 5-30 minutes, and drying after soaking is finished. Finally, the invention provides the theanine cold damage resistant preservative film which is prepared from the konjac glucomannan, the chitosan and the theanine, the final concentration of the konjac glucomannan is 0.2-0.8 g / L, the final concentration of the chitosan is 0.2-0.8 g / L, and the final concentration of the theanine is 5-20 mmol L <-1 >. The method is good in cold damage resistance effect and wide in application prospect.

The invention discloses a small animal in-vivo multi-parameter dynamic monitoring method based on photoacoustic imaging, and relates to the technical field of biomedical imaging, and the method comprises the steps: obtaining a photoacoustic signal generated by a small animal under the excitation of pulse laser output by an optical excitation module through an acoustic detection module; reconstructing a photoacoustic image of the photoacoustic signal through a filtering back projection algorithm; calculating the similarity between adjacent images in the photoacoustic image, identifying the image of which the similarity is lower than a set frame threshold value as a cross section slice polluted by respiratory motion artifacts and removing the cross section slice, and replacing the removed image frame by using the interpolation of an adjacent artifact-free image so as to obtain an updated photoacoustic image; selecting a region of interest in the photoacoustic image, and carrying out oxygenation kinetics monitoring, pharmacokinetics monitoring, perfusion kinetics monitoring or nanoparticle in-vivo kinetics monitoring; according to the monitoring method, motion artifacts caused by breathing of the small animals are effectively inhibited, and in-vivo multi-parameter dynamics monitoring of the small animals is achieved.

The invention discloses an edible fungus multi-parameter growth model construction and environment intelligent optimization method based on deep learning, and the method comprises the steps: collecting environment data, such as temperature, relative humidity, carbon dioxide concentration, illumination intensity, and matrix moisture content, and hypha and sporocarp images; the growth state index is constructed through weighted fusion of hypha respiration intensity, primordium density, pileus color gradient and other characteristics and is used for representing the growth health degree. And predicting a future growth trend based on an image and environment dual-channel feature fusion model, and obtaining prediction credibility according to a prediction error. An environment regulation and control strategy is established according to growth state improvement, energy consumption and physiological risks, equipment control instructions of ventilation, humidification, dehumidification, light supplement and the like are output, and dynamic optimization of a multi-parameter environment is achieved; and meanwhile, the model is updated online in combination with feedback data, so that the system has the capability of adapting to environment change and strain difference. The system can realize accurate monitoring and automatic regulation and control of the growth state of the edible mushrooms, and is suitable for industrialized production of the edible mushrooms.

The invention discloses a four-dimensional cone beam CT (Computed Tomography) reconstruction method based on an anatomical prior constraint diffusion model, which mainly solves the problem of poor quality of a reconstructed image in the prior art, and adopts the implementation scheme that the method comprises the following steps: acquiring CT original full-projection data of a batch of patients, and carrying out sparse sampling on the CT original full-projection data; performing data set division and reconstruction on the original full projection data and the sparse projection data to obtain a reference true value and a low-quality CT image containing a large number of artifacts; preliminarily enhancing the CT image containing a large number of artifacts by using the pre-trained ResViT network to obtain a CT image without artifacts; segmenting the CT image without artifacts by using a body segmentation network to obtain anatomical information of each organ; constructing a four-dimensional cone beam CT motion compensation reconstruction model based on anatomical prior constraints, and training and verifying the four-dimensional cone beam CT motion compensation reconstruction model; and inputting the tested data into the trained reconstruction diffusion model to obtain a reconstruction result. According to the method, artifacts of sparse cone beam CT in a specific organ area can be thoroughly eliminated, the reconstructed image is clear in details, and the method can be used for tracking and positioning tumor movement caused by respiration.

The present disclosure provides systems, apparatuses and methods that provide probe-cavity location and motion data based on probe location and respiration data.

The invention discloses an animal non-constraint physiological monitoring system based on pressure signals, which comprises a pressure signal acquisition module, a signal processing module, a storage module, a communication module and a power supply module which are respectively connected to a processor module, the signal processing module specifically comprises a preprocessing unit, a basic feature extraction unit, a pose feature extraction unit, a physiological parameter detection unit, a sleep monitoring unit, an instantaneous health event detection unit, an emotion evaluation unit, a safety monitoring unit and a summarizing unit so as to monitor the heart rate, breath, sleep, postures, emotions and safety of a target animal. According to the invention, unbound physiological monitoring is carried out on the animal, the method is more friendly to the animal, the monitoring mode is more suitable for the animal, and the monitoring result is more accurate.

The invention relates to the technical field of medical instruments, in particular to a tanning intelligent electronic chest strap used after a cardiothoracic surgery based on artificial intelligence, and a method comprises the following steps: based on a tanning intelligent electronic material, a sensor is embedded in the chest strap, and a sensor array detects biological data such as electrocardio, heartbeat, respiration and body temperature of a patient in real time; the embedded sensor array collects the biological signals in real time, and transmits the signals of the sensor sequence to the AI intelligent analysis platform through the Bluetooth device. The intelligent chest support has the advantages of high quality, comprehensive monitoring and intelligent adjustment, the tanning electronic material, namely the intelligent material with high flexibility, high air permeability and biodegradation resistance, is adopted, the comfort and safety of long-time wearing are ensured, the material has the self-adaptive adjustment characteristic, dynamic adjustment can be performed according to the postoperative recovery condition of a patient, the optimal chest support is ensured, and the intelligent chest support is suitable for popularization and application. The wearing comfort is improved, skin allergy and compression injury are reduced, the biocompatibility is enhanced, and the intelligent monitoring device is suitable for being worn after long-term postoperative rehabilitation and intelligently monitoring various vital sign changes after the operation.

A medical device includes an obtainer configured to obtain flow rate data representing a time series of a flow rate of respiration of a patient, a generator configured to generate frequency data from at least a part of an inspiration period of one respiration in the flow rate data, and a detector configured to detect occurrence of a snore of the patient on the basis of satisfaction of a detection condition related to the frequency data and reference data having a frequency distribution of the flow rate of the respiration in a case where no snore is assumed to occur in the patient.

The invention discloses an application of a PGK1 inhibitor in preparation of a medicine for treating MYC (myelodysplastic cancer) oncogene amplification type prostate cancer, it is found for the first time that PGK1 is a stable target for patent medicine, the PGK1 inhibitor NG-52 can effectively inhibit growth of MYC oncogene amplification type prostate cancer cells, and the target targets a glycolytic pathway, has small influence on aerobic respiratory metabolism of normal cells in a body, and can be used for preparing a medicine for treating MYC oncogene amplification type prostate cancer. The safety is higher; the mechanism of the target is different from that of current advanced prostate cancer chemotherapy drugs and endocrine therapy drugs, and the target has great potential of combined treatment with current first-line drugs, is easy to popularize and use clinically, and provides better prognosis for MYC gene amplification type prostate cancer patients.

The invention discloses a respiratory movement tracking method and system, computer equipment and a medium thereof, which are applied to the technical field of medical treatment, and the method comprises the following steps: inputting a CT image sequence into a network model pre-constructed based on a conditional diffusion model, identifying the morphological change of a target area along with respiration, and generating a sequential deformation field changing along with respiration; selecting representative tracking points such as organ edge special position points and focus area center points from a target area, tracing position information at different moments according to a time sequence deformation field, calculating displacement and forming a displacement track; irrelevant frequency interference in displacement track data is filtered out through a band-pass filtering technology, breathing movement related signals are highlighted, phase information is extracted through Hilbert transform, a breathing movement curve is drawn, visual presentation and tracking of breathing movement are achieved, doctors can be helped to more accurately grasp the breathing law of a patient, and the accuracy of breathing movement tracking is improved. Errors caused by respiratory movement are avoided in advance in surgical planning.

The application discloses a simulation-based respiratory displacement prediction method and device, a surgical robot, and an electronic device. The method comprises the following steps: obtaining a first three-dimensional model of a first object, wherein the first three-dimensional model comprises a first tissue model, and the first tissue model is a model of a first tissue in the first object; determining a first relationship of the first tissue model based on stress characteristics of the first tissue, wherein the first relationship is a relationship between a force received by the first tissue model and a deformation of the first tissue model; obtaining a first simulation force, wherein the first simulation force is used to simulate a respiratory force on the first tissue; and determining a first respiratory displacement of the first tissue based on the first three-dimensional model, the first relationship and the first simulation force, wherein the first respiratory displacement is a displacement generated by respiration of the first object. According to the method provided in the application, the first respiratory displacement of the first tissue can be determined by simulating the movement of the first tissue in the respiration process of the first object, and thus the accuracy of the first respiratory displacement can be improved.

The application discloses a solanaceae family seed automatic disinfection working method based on dynamic adjustment of humidity and heat, relates to the technical field of seed automatic disinfection, and is used for solving the problem that precise regulation and control based on physiological state is difficult to realize, and the probability of disease occurrence is increased. The seed coat state and conductivity of solanaceae family seeds after disinfection are detected, the proportion of a highlighted area is calculated, and the ethanol concentration is collected. The humidity response characteristics are analyzed through the proportion of the highlighted area and the ethanol concentration. The number of cracked seeds is counted, and the temperature response characteristics are analyzed in combination with the conductivity. Whether a ventilation processing mechanism is started is comprehensively judged. After ventilation, a regulation and control time is set. The respiration intensity and the tray water film thickness are monitored in real time. The humidity and heat states are classified according to the respiration change trend and the water film thickness. Cooling or drying channels are selected according to the classification results. The dynamic monitoring and regulation and control of the humidity and heat states after disinfection are realized. The ventilation channels are automatically selected through multi-dimensional sensing. The disinfection environment is optimized. The seed quality and storage stability are effectively improved.

The invention relates to a respiration-based disease detection system for animals, which measures, by means of electronic pressure sensors, the vacuum effect generated by animals during respiration, evaluates said measurements, analyzes the magnitude and frequency of the force applied to the diaphragm, assesses the muscular strength of the diaphragm, and provides an output based on said assessment.

A physiological information display apparatus includes a heart rate acquisition unit configured to acquire a heart rate of a subject, a respiration rate acquisition unit configured to acquire a respiration rate of the subject, a hemodynamics calculation unit configured to calculate a hemodynamic parameter of the subject, and a respiratory variation of the hemodynamic parameter, based on a plurality of the hemodynamic parameters calculated in a predetermined period, and a display controller configured to output the respiratory variation to a display. The hemodynamics calculation unit is configured to calculate a heart rate in one respiration. The display controller is configured to output a setting screen for setting a length of the predetermined period. The hemodynamics calculation unit is configured to acquire setting information, set the length of the predetermined period based on the acquired setting information; and calculate the respiratory variation in the set predetermined period.

Methods and systems for assessment, treatment, and / or prevention of positional sleep therapy for sleep apnea and other disorders are disclosed. In one example, a method for determining at least one respiratory severity metric for an individual's sleep session is provided. The method may include steps of receiving a data signal indicative of respiratory air flow of the individual as a function of time; identifying a plurality of respiratory severity events from the data signal; calculating respiratory severity values for each of the plurality of identified respiratory events; grouping the plurality of respiratory events into a plurality of clusters; and calculating, for each cluster, an accumulated respiratory severity value as a clustering index.

Neurostimulation therapy can be efficiently controlled based on information from an acceleration signal, such as can be obtained from an accelerometer. In an example, the accelerometer can be implanted in a cervical region or submandibular region of a patient. Circuitry can be configured to identify a first series of respiration phase transition events in the acceleration signal and, in response, provide the neurostimulation therapy synchronously with an inspiration phase of a patient's respirator cycle. In an example, m absence of identifying the first series of respiration phase transition events in the acceleration signal, the neurostimulation therapy can be provided asynchronously with the patient's respiratory cycle.

This invention provides a non-contact method, device, equipment, and storage medium for measuring trunk respiratory parameters. It synchronously acquires three-dimensional motion data of optical reflective markers during respiration, with these markers positioned at multiple pre-defined anatomical landmark locations on the subject's trunk. Based on the three-dimensional motion data, it determines the volume change of the spatial envelope formed by the optical reflective markers. According to a pre-established mapping relationship between the volume change and tidal volume, it converts the volume change into tidal volume. Based on the signal of the volume change over time, it extracts the respiratory rate. Finally, it calculates the total respiratory volume based on the tidal volume and the respiratory rate. By combining optical motion capture with spatial geometric modeling, it achieves non-contact, continuous, and high-precision measurement of trunk respiratory motion, effectively overcoming the shortcomings of traditional methods, such as reliance on patient cooperation, invasiveness, expensive equipment, and complex operation.

The invention relates to the technical field of sputum suction devices, in particular to a sputum suction device for respiration and critical disease medical nursing, which comprises a push-pull plate and a distraction component, a manual sputum suction apparatus is embedded in the front end of the push-pull plate, the output end of the manual sputum suction apparatus is connected with a sputum suction tube, the front end of the sputum suction tube is fixedly connected with a connecting hose, chutes are symmetrically formed in two outer walls of the push-pull plate, and the push-pull plate is provided with a push-pull rod. An adjusting assembly used for adjusting the length of the front end of the sputum suction tube is arranged at the outer end of the push-pull plate and comprises a sliding frame slidably connected to the outer end of the push-pull plate in a sleeving mode, connecting blocks are fixedly connected to the top end and the bottom end of the sliding frame, sliding blocks clamped in the sliding grooves are fixedly connected to the upper end and the lower end of the inner wall of the sliding frame, and reset springs are fixedly connected between the sliding blocks and the sliding grooves; and the outer walls of the connecting blocks are fixedly connected with drawing wires which penetrate through and are clamped into the conical pipes in a sliding manner. The sputum suction device has the beneficial effects that the drawing wire in the adjusting assembly is linked with the sliding frame, the conical tube can be collected into the sputum suction tube, sputum is prevented from flowing out when being drawn out, and the injury prevention effect is enhanced through a double-contraction structure.