364 results about "Extracorporeal circulation" patented technology

The invention relates to the technical field of data monitoring and analysis, and discloses a hemodialysis care unit extracorporeal circulator monitoring method and system and a storage medium. The method comprises the steps that vital signs and identity features of a patient are collected, a sign feature data set is obtained through fusion processing, and initial dialysis parameters are generated; analyzing the sign feature data set to obtain blood vessel state parameters; adjusting a circulation system based on the blood vessel state parameters and the initial dialysis parameters to obtain circulation control data; monitoring a dialysate path by using the circulation control data, and generating a liquid path operation parameter; the circulation control data and the liquid path operation parameters are integrated to analyze the system state, and equipment early warning indexes are formed; and evaluating equipment operation according to the early warning index and generating an automatic control instruction. According to the method, deep integration of the physical sign characteristic data of the patient and the equipment operation data is realized, a data-driven objective decision basis is provided for the dialysis process, and the safety and effectiveness of dialysis treatment are improved.

The invention discloses an assembling device for an extracorporeal circulation blood path attached tube, which comprises a production line, and a conveying device for clamping a catheter and driving the catheter to move forwards is arranged on the production line. The assembling device further comprises an automatic catheter feeding and cutting device, an automatic flow stopping clamp feeding and assembling device, a flow stopping clamp detecting device, a catheter gluing device, an automatic female needle base feeding device, an automatic antibacterial cap feeding and assembling device, a visual detecting device and an automatic discharging device which are sequentially arranged in the moving direction of the production line. The device has the beneficial effects that cutting, feeding and automatic conveying of the guide pipe in the extracorporeal circulation blood path attached pipe are achieved, a flow stopping clamp, a mother needle base and an antibacterial cap are sequentially assembled at a corresponding assembling station, after part of stations are assembled, automatic detection can be carried out, inferior-quality products, waste products and the like are prevented from entering the next working procedure, and after assembling is completed, the production efficiency is greatly improved. And the extracorporeal circulation blood path attached pipes can be automatically discharged and conveyed, and automatic machining of the extracorporeal circulation blood path attached pipes is achieved.

The invention discloses a device and method for accurately adjusting the extracorporeal circulation left and right heart compression degree, and relates to the technical field of medical instruments. The device for accurately adjusting the extracorporeal circulation left and right heart compression degree comprises a first connector, a sterile saline bag, a first pipeline, a first flow stopping piece, a second connector and a second pipeline. The first connector is suitable for being installed on a liquid inlet pipeline of the rolling pump. The liquid outlet end of the sterile saline bag is connected with the first joint through a first pipeline; the first flow stopping piece is suitable for being arranged on a liquid inlet pipeline of the rolling pump and clamping and closing the blood inlet end of the first connector; the second joint is suitable for being mounted on a liquid outlet pipeline of the rolling pump, and the second joint is detachably connected with the pulmonary membrane through a second pipeline; the second flow stopping piece is suitable for being arranged on a liquid outlet pipeline of the rolling pump and clamping and closing the bleeding end of the second connector. According to the device and the method for accurately adjusting the extracorporeal circulation left and right centroid compaction degree, the accuracy and the convenience of adjustment of the extracorporeal circulation left and right centroid compaction degree are greatly improved.

The invention provides a clinical diagnosis and treatment path generation method and system for tracking a chest pain patient. Wherein a dynamic spatio-temporal data atlas is constructed by synchronously collecting respiratory rhythm phase difference, coronary artery calcification integral and hypersensitive troponin curve slope, and risk degree transition signals are generated by coupling analysis of ST segment elevation amplitude asymmetric growth, left ventricular ejection fraction attenuation gradient and B-type natriuretic peptide release rate. In the acute stage, the constraint relation between a vascular recanalization time window and thrombolysis taboo is dynamically bound, in the subacute stage, a phase synchronization rule for enhancing CT scanning and anticoagulant drug dosage is established through a multidisciplinary interface, intravascular ultrasonic plaque morphological mutation characteristics and extracorporeal circulation parameters are fused, the blood supply reconstruction time sequence is dynamically adjusted based on a myocardial oxygen consumption balance equation, and the thrombolysis time sequence is determined. And path self-optimization is realized through space-time superposition of an interventional therapy delay parameter and a drug metabolism curve. According to the technical scheme provided by the invention, chest pain diagnosis and treatment path dynamic optimization and multi-modal parameter collaborative decision-making are realized, and the risk layering precision and the treatment timeliness are improved.

The invention provides an ultrasonic blood flow sensor based on temperature compensation, and relates to the field of medical instruments. The ultrasonic blood flow sensor based on temperature compensation comprises an ultrasonic probe assembly, a temperature sensor and a detection circuit, and the ultrasonic probe assembly is used for emitting ultrasonic waves to an extracorporeal circulation pipeline and receiving the ultrasonic waves penetrating through the extracorporeal circulation pipeline. According to the ultrasonic blood flow sensor based on temperature compensation, the problem that the measurement precision is reduced due to blood temperature changes can be effectively solved, and the ultrasonic blood flow sensor based on temperature compensation can be applied to application scenes such as extracorporeal circulation operations, such as the ECMOs process. Accurate blood flow monitoring is crucial to adjustment of ECMO system parameters, optimization of membrane lung oxygenation effect and guarantee of patient treatment effect. The sensor can provide high-precision and reliable blood flow data and help a doctor to more accurately evaluate the extracorporeal circulation state of a patient, so that a more accurate medical decision is made, and the treatment success rate is increased.

The invention discloses a method for controlling the compaction degree of a left heart and a right heart in an extracorporeal circulation operation, which comprises the following steps of: in an in-vitro environment, mounting a peristaltic pump at a left heart inlet and a right heart inlet of an extracorporeal circulation device; a liquid inlet of the peristaltic pump is connected with a liquid inlet pump, and a liquid outlet of the peristaltic pump is connected with a liquid outlet pump; and finally, a first pressure measuring structure and a second pressure measuring structure are arranged on the sides, away from the peristaltic pump, of the liquid inlet pump and the liquid outlet pump correspondingly, and the pressure of the liquid inlet pump and the pressure of the liquid outlet pump are adjusted to be-20 mmHg. The negative pressure of the liquid inlet pump is adjusted through the first pressure measuring structure, and the negative pressure of the liquid outlet pump is adjusted through the second pressure measuring structure, so that the purpose of quantifying the adjusting mode is achieved, and the adjusting mode is accurate, rapid and high in reliability; the peristaltic pump can effectively avoid the occurrence of risks such as blood component damage, hemolysis, gas embolism and the like caused by reduction of the amount of blood conveyed by the pump, insufficient blood supply or direct interruption of blood circulation due to the condition that a pipe body connected with the peristaltic pump is shrunken or cannot be sucked during an operation.

The embodiment of the invention provides a continuous blood oxygen monitoring system in extracorporeal circulation and a control method thereof. The continuous blood oxygen monitoring system comprises a vein sensor, an artery sensor, a blood flow sensor, an oxygen sensor, a carbon dioxide sensor, a controller and a display, the vein sensor monitors the vein blood oxygen saturation degree; the artery sensor monitors arterial oxygen saturation and hematocrit; the blood flow sensor monitors the blood flow of the artery pipeline; the oxygen sensor monitors the oxygen concentration of the oxygenator; the carbon dioxide sensor monitors the carbon dioxide concentration of the oxygenator; the display provides an interaction control, responds to a trigger operation acting on the interaction control, sends an interaction instruction to the controller, and updates information displayed in an interaction interface according to the control of the controller; the controller receives the interaction instruction and executes processing corresponding to the interaction instruction; the processing includes controlling display information of the display; the display information comprises information corresponding to the monitoring parameters. The scheme ensures the safety and effectiveness of the treatment process.

The invention discloses a postoperative sub-delirium syndrome risk prediction system for a cardiac surgery patient, and relates to the technical field of medical treatment, and the system comprises a clinical data collection module which is used for collecting multi-dimensional clinical data of the cardiac surgery patient in a perioperative period under extracorporeal circulation, the data comprises patient baseline information, preoperative neurocognitive function evaluation indexes, intraoperative physiological parameters and postoperative early-stage vital signs; and the risk identification module is used for utilizing a single-factor statistical analysis mechanism. According to the postoperative sub-delirium syndrome risk prediction system for the cardiac surgery patient, accurate prediction of the sub-delirium syndrome risk is achieved by collecting multi-dimensional clinical data of the patient in the perioperative period, such as baseline information, preoperative neurocognitive function, intraoperative physiological parameters and postoperative early-stage vital signs; the independent risk factors are scientifically screened and quantified by using single factor analysis and a multivariate Logistic regression model, and the problem of incomplete data dimensions in traditional evaluation is effectively solved.

The invention discloses a method for controlling left and right heart compaction degree before extracorporeal circulation operation, which comprises the following steps of: installing a peristaltic pump at a left and right heart inlet of an extracorporeal circulation device in an in-vitro environment; a liquid inlet of the peristaltic pump is connected with a liquid inlet pump, and a liquid outlet of the peristaltic pump is connected with a liquid outlet pump; and finally, a first pressure measuring structure and a second pressure measuring structure are arranged on the sides, away from the peristaltic pump, of the liquid inlet pump and the liquid outlet pump correspondingly, and the pressure of the liquid inlet pump and the pressure of the liquid outlet pump are adjusted to be-180 mmHg. The negative pressure of the liquid inlet pump is adjusted through the first pressure measuring structure, and the negative pressure of the liquid outlet pump is adjusted through the second pressure measuring structure, so that the purpose of quantifying the adjusting mode is achieved, the adjusting process for controlling the left and right heart compression degree before the extracorporeal circulation operation is visualized, the adjusting result is converted into the specific negative pressure values of the liquid inlet pump and the liquid outlet pump, and the accuracy of the operation is improved. The pressing degree reference for adjusting the left center and the right center is numeralized and standardized, the adjusting difference is avoided, experience and feeling are not needed, and the adjusting mode is fast and high in accuracy.

The invention discloses an extracorporeal circulation system and a control method thereof, and relates to the technical field of medical instruments. The extracorporeal circulation system comprises a membrane oxygenator, a microembolus filter, a rolling pump, a first pressure detector and a second pressure detector; a liquid inlet of the membrane oxygenator is communicated with the arterial cannula; the microembolus filter is circularly communicated with the membrane oxygenator, and the liquid outlet end of the microembolus filter is communicated with the venous cannula; the rolling pump is circularly communicated with the membrane oxygenator; the first pressure detector is communicated with the rolling pump and is used for detecting the outlet liquid pressure of the rolling pump and generating a first pressure signal; the second pressure detector is communicated with the microplug filter and is used for detecting the inlet liquid pressure of the microplug filter and generating a second pressure signal; the structure of the extracorporeal circulation system and the control method of the extracorporeal circulation system are improved, the accuracy and timeliness of medical staff for judging the oxygenation effect of the membrane type oxygenator are improved, the membrane type oxygenator can be replaced in time, a large number of complications can be avoided, and the death rate of patients is reduced.

The invention discloses an intelligent cleaning and disinfecting system for a hemodialysis extracorporeal circulation pipeline, and belongs to the technical field of medical instruments. Comprising the following modules: a real-time monitoring module used for detecting temperature, pressure, liquid level, residual pollutant and disinfectant concentration in a pipeline in real time and feeding back cleaning and disinfection state data; the intelligent control module is used for dynamically adjusting a flowing mode and cleaning disinfectant parameters on the basis of the cleaning and disinfection state data so as to achieve the optimal cleaning effect and the minimum use amount; the flow optimization module integrates a special flow channel structure and a programmable control valve, automatically optimizes the flow mode of the disinfectant in the pipeline according to the control instruction of the intelligent control module, and realizes full contact and efficient cleaning and disinfection; the cleaning disinfectant supply module is used for automatically proportioning and supplying a cleaning solution and a concentrated disinfectant according to the control instruction of the intelligent control module; and the safety protection module is integrated with functions of ultraviolet disinfection, liquid leakage monitoring and ventilation and exhaust, so that sterile and safe operation of the whole system is ensured.

The invention provides an extracorporeal membrane oxygenation kit and a using method thereof.The extracorporeal membrane oxygenation kit comprises a pump head, an oxygenator and an extracorporeal circulation pipeline, the pump head is communicated with the oxygenator through the extracorporeal circulation pipeline, the extracorporeal circulation pipeline comprises a pipeline body and quick connectors, the two ends of the pipeline body are connected with the quick connectors, and the quick connectors are connected with the pump head. The pump head is communicated with one end of the pipeline through one quick connector, the oxygenator is communicated with the other end of the pipeline through the other quick connector, each quick connector comprises a female head and a male head, and the female head and the male head are connected in a clamped mode. According to the extracorporeal membrane oxygenation sleeve bag, the pump head, the oxygenator and the extracorporeal circulation pipeline are connected with one another through the quick connector, the quick connector is connected with the male connector in a clamped mode through the female connector for quick connection and disconnection, and therefore quick replacement can be conducted when thrombus appears in the extracorporeal membrane oxygenation sleeve bag.

A blood pump-oxygenator system (250A, 250B, 250C) for increasing perfusion and oxygen levels in the body of a patient (P), comprising: a blood inlet (80) and a blood outlet (90) connected to form a circuit operable as a cardiopulmonary bypass system suitable for extracorporeal treatment of the blood of the patient; a first blood pump (11) and a first oxygenator (20), wherein the first blood pump (11) is configured to deliver blood from the patient (P) through the circuit to the blood inflow port (80), through the first oxygenator (20), out of the blood outflow port (90) and back to the patient (P). The system further comprises a second blood pump (13) and a second oxygenator (21), wherein the second blood pump (13) is configured to deliver blood from the patient (P) through the circuit to the blood inflow port (80), through the second oxygenator (20), out of the blood outflow port (90) and back to the patient (P). The circuit comprises a first branch (101) and a second branch (102) arranged in parallel with each other, the first branch (101) accommodating the first blood pump (11) and the first oxygenator (20), and the second branch (102) accommodating the second blood pump (13) and the second oxygenator (21). The system further comprises a pump control unit (290) wherein the first and second blood pumps (11, 13) are configured to be controlled by the pump control unit (290) to increase or decrease the blood flow through the corresponding oxygenator (20, 21) by changing the proportion of the blood flow through the first and second oxygenator (20, 21).

According to the high-safety drilling and anchoring integrated trolley applied to the technical field related to drilling and anchoring trolleys, through arrangement of the outer circulation unit, when an oil cylinder works, hydraulic oil can be continuously circulated outside the cylinder, continuous impurity interception is achieved, and compared with the prior art, the service life of the hydraulic oil can be effectively prolonged, the replacement frequency is reduced, and the production efficiency is improved. Meanwhile, the influence of granular impurities on construction is effectively reduced; in the process of carrying out extracorporeal circulation filtration on hydraulic oil, along with increase of impurities intercepted on the movable filter screen and reduction of permeability, the resistance of the movable filter screen to the hydraulic oil is increased, then the thrust of the hydraulic oil borne by the movable filter screen is increased, the hydraulic oil gradually and spontaneously falls into the screen falling bag, and the next movable filter screen with good permeability can continue to carry out impurity interception; and in cooperation with the arrangement of the falling net monitoring unit, the falling situation of the multiple movable filter nets can be monitored, workers can conveniently carry out corresponding treatment in time, and then the service life of hydraulic oil is effectively guaranteed.

To provide an estimation method of a recirculation rate enabling estimation of a recirculation rate without being limited by a preparation location of a blood marker or an arrangement location of detection means of the blood marker.SOLUTION: An estimation method of a recirculation rate includes the steps of: acquiring data representing an amount of change in blood concentration after recirculation when a blood marker is added to blood to be extracorporeally circulated, data representing a relation between an amount of change in blood concentration after recirculation and blood concentration, and data representing a relation between the amount of change in blood concentration after recirculation and a blood flow rate; creating a model by multivariate analysis or machine learning to obtain a regression equation or a conversion model, with the amount of change in blood concentration after recirculation, blood concentration and a blood flow rate used as an explanatory variables and the recirculation rate as an objective variable; acquiring data representing the amount of change in blood concentration, blood concentration and a blood flow rate of blood flowing through an arterial line or a venous line; and inputting treatment data to the regression equation or the conversion model to estimate the recirculation rate.SELECTED DRAWING: Figure 3A

The invention relates to a control method and device of an extracorporeal circulation system, computer equipment and a storage medium. The method comprises the steps that current perfusion parameters and target perfusion parameters are obtained, parameters of a state space model are updated according to the current perfusion parameters, the target perfusion parameters and the state space model, an updated state space model is obtained, and then the current perfusion parameters are adjusted according to the current perfusion parameters and the updated state space model; therefore, during regulation and control, the target perfusion parameter is considered, the state space model is updated according to the target perfusion parameter and the current perfusion parameter, then the current perfusion parameter is used as the initial value of the updated state space model, and the current perfusion parameter is regulated, so that automatic regulation is realized, the manual regulation time of an operator is shortened, and the manual regulation efficiency is improved. And the adjusting efficiency is improved. Meanwhile, the risk of postoperative organ injury of the patient is reduced and the recovery speed of the patient is accelerated through reasonable tissue perfusion, and the treatment overhead of the patient is reduced to a certain extent.

The invention relates to the technical field of human body blood gas monitoring, and discloses a blood gas monitoring method and system of an extracorporeal circulation system.The method comprises the steps that current blood gas data of a patient is collected, cleaning is conducted, blood gas features are extracted, the features are input into a blood gas prediction model, and the change trend of the blood gas data of the patient in the future effective intervention period is predicted; if it is monitored that the blood gas data of the patient tends to be bad in the time period, parameters of the oxygenator are actively adjusted; meanwhile, according to the basic information of the patient and the current blood gas data, a corresponding oxygenation parameter adjustment strategy is screened, the change trend of the blood gas data of the patient is continuously predicted, and whether the oxygenation parameter adjustment strategy is replaced or not is judged according to the updated prediction result until the predicted blood gas data of the patient is in a good change trend; the technical problem that existing blood gas monitoring lacks effective early warning is solved.

Disclosed in the present application are an HCT prediction method and system, a device, and a medium. Photons in a photon group are emitted into an extracorporeal circulation blood model so that the photons are reflected, scattered, or absorbed during movement. The extracorporeal circulation blood model is a model constructed on the basis of the thickness of an extracorporeal circulation tube, the thickness of the blood, and the distance from a light source generator to a detector. Light intensity data corresponding to photons reaching the detector are acquired. The acquired light intensity data are input into a prediction model to obtain a hematocrit (HCT) prediction value. The prediction model is a model constructed on the basis of a BP neural network and the relationship between light intensity and HCT. The prediction model combining simulation and neural network increases the data volume, achieves continuous non-invasive estimation of HCT by means of algorithm model optimization, and improves the accuracy of HCT prediction.

The invention provides an extracorporeal circulation thrombus recognition method and system based on a hyperspectral image, and the method comprises the steps: collecting a current region image of a user body surface in an associated region of extracorporeal circulation treatment through hyperspectral image collection software, and carrying out the recognition of the extracorporeal circulation thrombus through an image recognition network based on the current region image; identifying each initial thrombus image region and thrombus image data in the region image; based on the pressure detection information of each region, generating region pressure distribution information of each initial thrombus image region; and on the basis of the regional pressure distribution information and the thrombus image data of each initial thrombus image region, through a thrombus prediction strategy, identifying the thrombus probability and the thrombus range of each initial thrombus image region, thereby generating regional thrombus prediction information of the associated region. By adopting the scheme, advanced early warning and real-time monitoring of extracorporeal circulation blood coagulation reaction can be improved.

The invention relates to an online calibration method for an extracorporeal membrane oxygenation system. A time difference method flow sensor and a Hall sensor collect data, and a host calculates blood pump flow, blood pump rotating speed data and relative indicating value errors and judges whether the data are out of tolerance or not. The on-line calibration device realizes real-time data acquisition and calibration at the stage of treating a patient with the blood pump flow and the blood pump rotating speed, and comprises an on-line calibration device host, a time difference method flow sensor, a Hall sensor and a data line. The Hall sensor is connected with the online calibration device host, one end of the time difference method flow sensor is connected with the online calibration device host, the other end of the time difference method flow sensor is connected with an extracorporeal circulation perfusion pipeline of the extracorporeal membrane oxygenation system, and one end of a pump head of a blood pump of the extracorporeal membrane oxygenation system is connected with a patient through the extracorporeal circulation perfusion pipeline. And the other end is connected with a patient through an extracorporeal circulation drainage pipeline. The accuracy of measured data is improved, and the problem that a conventional optical non-contact rotating speed measuring method cannot be suitable for online calibration of the rotating speed of the blood pump of the in-vitro membrane lung oxygenation system is solved.

The invention relates to the technical field of blood dialysis, in particular to a real-time blood pressure monitoring method of a blood sampling system. According to the method, suspected blood sampling moments and suspected sampling ends are preliminarily screened out through blood pressure deviation conditions according to different change conditions after blood sampling is carried out at the sampling ends, and the blood sampling probability is obtained by analyzing the blood pressure change conditions of the different sampling ends after the suspected blood sampling moments; analyzing the recovery condition after the blood pressure fluctuates according to the suspected blood sampling time, and obtaining a recovery change reduction index according to the reduction change of the recovery condition under continuous sampling; and in combination with accumulation of recovery change reduction indexes and blood sampling probabilities, monitoring and early warning are carried out through comparison analysis of historical patients. The blood sampling condition at the extracorporeal circulation sampling end is analyzed, the fluctuation recovery time reduction condition is compared, the monitoring abnormity is early warned in time, and it is guaranteed that a patient is monitored safely and reliably.

The method for monitoring parameters of a patient during surgery with extracorporeal circulation serves to estimate the presence of AKI risk and comprises calculating a dynamic global index of AKI risk as a logistic regression deriving from a static AKI risk index and a dynamic index of AKI risk. The value and / or the time trend of such global index of AKI risk can be advantageously displayed on a monitor during the surgery. The dynamic AKI risk index is calculated at least on the basis of the extracorporeal circulation time, the minimum level of oxygen supply and the exposure time to oxygen supply below a critical threshold which are measured or determined repeatedly during surgery. Preferably, the dynamic AKI risk index is also calculated on the basis of the minimum mean arterial pressure during surgery and / or the maximum concentration of lactate in the blood during surgery and / or the minimum hematocrit during surgery and / or the fact that the patient has been subjected to transfusion(s) during the extracorporeal circulation.

The invention provides an anesthetic waste gas recycling and discharging device, and belongs to the technical field of waste gas treatment. In order to solve the problem that an existing anesthetic waste gas treatment device cannot treat anesthetic waste gas generated by an anesthetic gas volatilization tank on an extracorporeal circulation machine in time, the anesthetic waste gas recycling and discharging device capable of treating the anesthetic waste gas generated by the extracorporeal circulation machine in time is arranged. The device is connected with a pipe orifice of an anesthetic waste gas exhaust pipe of the extracorporeal circulation machine, so that anesthetic waste gas generated by the extracorporeal circulation machine can be treated in time; the waste anesthetic gas recycling and discharging device comprises a disinfection mechanism, a condensation and liquefaction mechanism and an adsorption mechanism, after waste anesthetic gas enters the waste anesthetic gas recycling device, the waste anesthetic gas is heated and then condensed, recovery of anesthetic components in the waste anesthetic gas is achieved, and the waste anesthetic gas which is not liquefied is adsorbed and degraded; furthermore, the treated gas is safely exhausted through an exhaust pipe of the adsorption mechanism.

The invention belongs to the field of medical care informatics, and provides an extracorporeal circulation real-time risk early warning and decision support system based on multi-modal physiological data, which comprises the following steps: collecting multi-modal data in an extracorporeal circulation process; determining the current activation state of each mode, and numbering and identifying the modes in the activation state; respectively executing independent state updating operation on the modes in the activated state; selecting a plurality of reference state units from a historical state set to identify the difference degree between the input feature vector and the plurality of reference state units on the modal structure, and adjusting the participation degree and the influence weight of the reference state units based on the difference degree; and based on the risk evolution trajectory of the reference state unit and the corresponding participation degree and influence weight, determining a risk score value at the current moment, and finally generating a control suggestion.

A method for abnormal alarm in blood bubble monitoring includes: when receiving a bubble signal sent by a bubble sensor, obtaining the first moment when the bubble signal is generated, and obtaining pressure sampling data of the extracorporeal circulation pipeline within a preset target time range based on a pressure acquisition device. Based on the pressure sampling data, judging whether there is abnormal pressure fluctuation in the extracorporeal circulation pipeline within the target time range. If so, obtaining the abnormal fluctuation time range corresponding to the abnormal pressure fluctuation in the extracorporeal circulation pipeline. Judging whether the first moment is within the abnormal fluctuation time range. If so, ignoring the bubble signal. If the first moment is not within the abnormal fluctuation time range, or if there is no abnormal pressure fluctuation in the extracorporeal circulation pipeline within the target time range, issuing a bubble alarm message.

The invention relates to an extracorporeal circulation platform and a method for simulating different physiological statuses, and the method comprises the steps: enabling a flow and pressure curve to be closer to a simulation target by controlling the motion curves of a valve simulation device and a servo drive device; the method comprises the following steps: building an experimental platform which takes a valve simulation device, an electromagnetic proportional valve, a compliance simulation device, a servo driving device and a heart simulation device as components, and respectively simulating valves, peripheral resistance of blood vessels, arteriovenous and left heart in vitro; physiological parameters such as pressure and flow of a simulation target and curves are obtained through medical materials such as echocardiography, and part of feature points of the physiological parameters are used as control nodes of motion curves of the valve simulation device and the servo driving device on an extracorporeal circulation platform to adjust the motion curves of the device; finally, the feature points are adjusted according to the deviation between an experimental curve and a target curve, so that different physiological states of the heart are simulated, and the accuracy of a flow field near the valve is improved.

The utility model discloses an extracorporeal circulation blood vessel connecting structure under a field operation condition, and relates to the technical field of medical instruments. The connecting structure comprises a connecting assembly I and a connecting assembly II; the two ends are respectively inserted into blood vessels on the left and right sides of the broken blood vessel; the first connecting assembly and the second connecting assembly are of the same structure and are symmetrically arranged, and each connecting assembly comprises a puncture assembly, a drainage tube and a connecting base arranged at the end of the drainage tube. The switching structure is connected between the first connecting assembly and the second connecting assembly. According to the extracorporeal circulation blood vessel connecting structure under the field operation condition, rapid and stable connection of broken blood vessels is achieved by designing the connecting structure and the switching structure, and therefore the treatment efficiency and the survival rate of wounded personnel in the field operation environment are remarkably improved.

The invention relates to an extracorporeal circulation control method based on membrane lung resistance and an extracorporeal membrane lung oxygenation system thereof, and aims to solve the core technical bottlenecks of membrane lung blockage, efficiency reduction, embolism risk increase and operation time limitation caused by coagulation activation and thrombosis due to the fact that blood is in contact with non-biological materials in an ECMO system. The core is that pressure sensors at three key positions are used for monitoring an outlet and an inlet of the magnetic suspension blood pump and a membrane lung outlet in real time. And calculating membrane lung resistance pressure difference and scouring resistance pressure difference on the basis. And the system continuously judges whether the pressure difference is abnormal or not. When the pressure difference is normal, the constant flow mode of the blood pump is maintained, and the operation efficiency and stability are guaranteed. And once it is detected that the membrane lung resistance pressure difference and / or the flushing resistance pressure difference are / is abnormal, the blood pump is immediately switched to the pulsation mode. On one hand, thrombus which is deposited or loosened on membrane lung fibers can be physically scoured and scattered, and the blocking process is delayed; on the other hand, the risk that large free thrombus forms embolism can be remarkably reduced.

The utility model discloses a blood extracorporeal circulation device, which belongs to the technical field of blood extracorporeal circulation equipment and comprises an inner tube and an outer tube, the inner tube and the outer tube are integrally nested, one end of the outer tube is connected with an air inlet tube, the air inlet tube is communicated with oxygen inlet equipment, and the other end of the outer tube is connected with an air outlet tube. A temperature changer and a flow speed controller are connected between one end, far away from the air outlet end, of the outer pipe and the oxygen inlet equipment; one end of the inner tube is a liquid inlet end for transporting blood, the other end of a blood inlet of the inner tube is a liquid outlet end, and the liquid outlet end is connected with a temperature sensor, an oxygen saturation sensor, a blood pump and a microembolus filter; the part, in the outer pipe, of the inner pipe is made of a gas exchange membrane material, and the liquid inlet end of the inner pipe is opposite to the gas inlet pipe of the outer pipe. The blood temperature rising process is safer, meanwhile, in the blood temperature rising process, the oxygen saturation index in the blood can be directly adjusted, the blood oxygen value is simple, convenient and controllable on the basis of convenient temperature rising, temperature control and oxygen saturation of in-vitro blood circulation are carried out at the same time, and operation is easy and safe.

The invention relates to the field of blood purification treatment, and discloses an extracorporeal circulation pipeline of a blood purification treatment device.The extracorporeal circulation pipeline comprises end plates, an inlet pipe and an outlet pipe, the two end plates are fixedly connected through a first connecting rod, the inlet pipe fixedly penetrates through one end plate, and the outlet pipe fixedly penetrates through the other end plate; a plurality of switching tubes are arranged between the two end plates through a switching structure, and the switching tubes are switched to be communicated with the inlet tube and the outlet tube respectively by directly rotating a switching sleeve on the switching structure, so that time and labor are saved during operation, the working difficulty is reduced, smooth operation of extracorporeal blood circulation work is guaranteed, and the working efficiency is improved.