A self-contained device for autologous blood reinfusion after pericardiocentesis

Abstract

The present application relates to the technical field of medical devices, and discloses a kind of pericardial puncture post self-blood transfusion closed device, including controller, purification equipment and first joint, blood pump, inlet pipeline, sampling equipment and effluent pipeline;Effluent pipeline is provided with blood transfusion device, and filter element is arranged in blood transfusion device, and the outlet of effluent pipeline is connected to indwelling needle;Sampling equipment includes sampling inlet, first sampling outlet and second sampling outlet;Sampling inlet is communicated with the outlet of inlet pipeline, first sampling outlet is communicated with effluent pipeline, second sampling outlet is communicated with the inlet of purification equipment, and the outlet of purification equipment is communicated with the first end of reflux pipeline;First sampling outlet and effluent pipeline are provided with first valve between, and second sampling outlet and the inlet of purification equipment are provided with second valve between;The second end of reflux pipeline is communicated to between first valve and effluent pipeline.The present application is conducive to realizing the automatic control of pericardial puncture post self-blood transfusion, and reduces the work intensity of medical staff.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a sealed device for autologous blood reinfusion after pericardiocentesis. Background Art

[0002] The pericardium is a membranous sac covering the heart. It consists of a fibrous layer and a serous layer. The fibrous layer is relatively tough, closely adhering to the parietal layer of the serous layer and exhibiting minimal elasticity. The serous layer is thin, smooth, and moist, and is further divided into a parietal layer and a visceral layer. The parietal layer adheres closely to the inner surface of the fibrous layer, while the visceral layer adheres to the surface of the heart (the epicardium). Between the visceral and parietal layers lies a cavity called the pericardial cavity. The pericardium protects the heart, preventing excessive expansion of the cardiac chambers and maintaining a constant blood volume.

[0003] Pericardiocentesis is a diagnostic and treatment technique that uses a puncture needle to directly penetrate the pericardial cavity. When there is fluid, blood or pus in the pericardial cavity, pericardiocentesis can be used as a diagnostic measure and an emergency treatment measure to relieve pericardial tamponade.

[0004] After pericardiocentesis, to reduce blood waste and the need for allogeneic blood transfusion, the extracted pericardial blood can be returned to the patient through a vein under standardized procedures. Autologous blood recovery technology involves collecting lost blood using an autologous blood transfusion device and then returning it to the donor through a series of procedures.

[0005] In the prior art, the entire post-pericardiocentesis autologous blood transfusion process is manually performed by medical personnel. This involves connecting the post-pericardiocentesis catheter to a syringe, pulling the syringe to extract the pericardial blood into the syringe, and then pushing the syringe to return the blood in the syringe to the patient through the tubing. This post-pericardiocentesis autologous blood transfusion process is labor-intensive for medical personnel and is not conducive to automated blood transfusion control. Summary of the Invention

[0006] The main purpose of the present invention is to provide a closed device for autologous blood transfusion after pericardiocentesis, aiming to solve the problems in the prior art that the operation of autologous blood transfusion after pericardiocentesis is labor-intensive for medical personnel and is not conducive to automatic control of blood transfusion.

[0007] To achieve the above objectives, the present invention provides a sealed device for autologous blood reinfusion after pericardiocentesis, comprising a controller, a purification device, and a first connector, a blood pump, an inlet pipeline, a sampling device, and an outflow pipeline connected in sequence. The first connector includes a first interface and a second interface. The first interface is used to connect to a pericardiocentesis catheter, and the second interface is used to connect to the blood pump. The outflow pipeline is provided with a blood transfusion device, which is provided with a filter element. The outlet of the outflow pipeline is used to connect to an indwelling needle. The sampling device is provided with a sampling inlet, a first sampling outlet, and a second sampling outlet. The sampling inlet is connected to the outlet of the inlet pipeline, the first sampling outlet is used to connect to the outflow pipeline, and the second sampling outlet is used to connect to the inlet of the purification device. The outlet of the purification device is connected to the first end of the return pipeline. A first valve is provided between the first sampling outlet and the outflow pipeline, and a second valve is provided between the second sampling outlet and the inlet of the purification device. The second end of the return pipeline is connected between the first valve and the outflow pipeline. The sampling device, the purification device, the blood pump, the first valve, and the second valve are respectively connected to the controller for communication.

[0008] Preferably, the inlet pipeline is connected with a first flow meter, a first flow control valve and a blood receiving component in sequence along the direction from the blood pump to the sampling device; the outflow pipeline is connected with the blood transfusion device, a second flow control valve and a second flow meter in sequence along the direction from the sampling device to the indwelling needle; the inlet of the first flow meter is connected with the outlet of the blood pump, and the outlet of the blood receiving component is used to connect with the sampling inlet; the inlet of the blood transfusion device is connected with the first sampling outlet, and the outlet of the second flow meter is used to connect with the indwelling needle; the closed device for reinfusion of autologous blood after pericardial puncture also includes a bypass pipe, which is used to return the blood limited by the first flow meter to the inlet of the blood pump, and a third valve is provided on the bypass pipe, and the third valve is communicatively connected with the controller.

[0009] Preferably, the blood receiving component is connected to an injection tube, and the injection tube is provided with a connecting joint to connect an external injection drug; the injection tube is also provided with an infusion metering pump, and the infusion metering pump is communicatively connected to the controller.

[0010] Preferably, the sampling device includes a blood gas analysis unit and a blood routine analysis unit respectively connected to the controller for communication.

[0011] Preferably, the purification device comprises a primary filter, a centrifuge, a washing system and a secondary filter which are sequentially connected along the direction of blood flow.

[0012] Preferably, the controller, the purification device, the second interface, the blood pump, the inlet pipeline, the sampling device and the outflow pipeline are respectively accommodated in the shell, and the first interface, the indwelling needle and the connecting joint are respectively arranged outside the shell; a control panel connected to the controller is also provided on the shell.

[0013] Preferably, the blood receiving component is further provided with a liquid level meter, and the liquid level meter is communicatively connected with the controller.

[0014] Preferably, the controller is further configured to connect to an electrocardiogram monitoring device; the controller is configured to:

[0015] After starting the machine, opening the first valve and closing the second valve;

[0016] Acquiring monitoring data from the electrocardiogram monitoring device and sampling data from the sampling device, and determining whether to generate a purification signal based on the monitoring data and the sampling data;

[0017] After the purge signal is generated, the first valve is closed and the second valve is opened.

[0018] Preferably, the controller is further configured to:

[0019] controlling the blood pump to operate according to set operating parameters to provide a set flow rate;

[0020] When the monitoring data of the electrocardiogram monitoring device does not reach a set data interval, generating an adjustment working parameter for lowering the suction rate of the blood pump;

[0021] controlling the blood pump to operate at the adjusted operating parameters to reduce the outlet flow of the blood pump to an adjusted flow rate;

[0022] determining, based on first flow data from the first flow meter, whether the outlet flow of the blood pump is adjusted down to an adjusted flow rate;

[0023] If not, lowering the opening of the first flow control valve so that the flow entering the blood receiving component meets the adjusted flow;

[0024] The extraction volume of the pericardial effusion is calculated, and when the set extraction volume is reached, a stop signal is sent to the blood pump.

[0025] Preferably, the controller is further configured to:

[0026] generating a recommended injection drug type based on the monitoring data of the electrocardiogram monitoring device and the sampling data of the sampling device;

[0027] Obtain the type of medication to be injected;

[0028] Determining a quantitative signal of the infusion quantitative pump according to the type of medicine to be injected;

[0029] The infusion quantitative pump is controlled according to the quantitative signal of the infusion quantitative pump.

[0030] In the technical solution of the present invention, a pericardial puncture catheter is connected to an autologous blood return closed device through a first interface of a first connector. A blood pump provides power for the inflow of pericardial blood, and allows the pericardial blood to be input into the pipeline and flow into the sampling device for blood sample testing. After blood sampling, the pericardial blood can enter the outflow pipeline or the purification device according to the sampling results or the settings of medical staff. The outflow pipeline is provided with a blood transfusion device, which is provided with a filter element for filtering out substances such as thrombus in the blood, and the purification device is used to purify the blood after blood sampling before inputting it into the outflow pipeline. The pericardial blood that has passed through the outflow pipeline is returned to the patient's body through the indwelling needle. Therefore, in the technical solution of the present invention, the device can automatically provide suction power and has the sampling and purification functions of pericardial hemorrhage. The sampling equipment, the purification equipment, the blood pump, the first valve and the second valve can all be controlled by the controller. Therefore, the operation of autologous blood transfusion after pericardial puncture frees the hands of medical staff to provide more timely rescue and treatment to patients, thereby solving the problem in the existing technology that the work intensity of medical staff is high and it is not conducive to the automatic control of blood transfusion during the operation of autologous blood transfusion after pericardial puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a connection diagram of an embodiment of a sealed device for autologous blood reinfusion after pericardiocentesis of the present invention;

[0032] Figure 2 This is a connection diagram of another embodiment of the closed device for autologous blood reinfusion after pericardiocentesis of the present invention;

[0033] Figure 3 This is a schematic diagram of the sealed device for autologous blood reinfusion after pericardiocentesis of the present invention housed in a housing.

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] In the following description, suffixes such as "unit," "component," or "unit" used to represent elements are only used to facilitate the description of the present invention and have no specific meaning. Therefore, "unit," "component," or "unit" can be used interchangeably.

[0037] See also Figures 1 to 3 The present invention provides a closed device for autologous blood reinfusion after pericardiocentesis, comprising a controller, a purification device, and a first connector, a blood pump, an inlet pipeline, a sampling device, and an outflow pipeline connected in sequence; the first connector comprises a first interface and a second interface; the first interface is used to connect to a pericardiocentesis catheter, and the second interface is used to connect to the blood pump; the outflow pipeline is provided with a blood transfusion device, which is provided with a filter element, and the outlet of the outflow pipeline is used to connect to an indwelling needle; the sampling device is provided with a sampling inlet, a first sampling outlet, and a second sampling outlet; the sampling inlet is connected to the outlet of the inlet pipeline, the first sampling outlet is used to connect to the outflow pipeline, the second sampling outlet is used to connect to the inlet of the purification device, and the outlet of the purification device is connected to the first end of the return pipeline; a first valve is provided between the first sampling outlet and the outflow pipeline, and a second valve is provided between the second sampling outlet and the inlet of the purification device; the second end of the return pipeline is connected to the space between the first valve and the outflow pipeline; the sampling device, the purification device, the blood pump, the first valve, and the second valve are respectively connected to the controller for communication.

[0038] In the technical solution of the present invention, a pericardial puncture catheter is connected to an autologous blood return closed device through a first interface of a first connector. A blood pump provides power for the inflow of pericardial blood, and allows the pericardial blood to be input into the pipeline and flow into the sampling device for blood sample testing. After blood sampling, the pericardial blood can enter the outflow pipeline or the purification device according to the sampling results or the settings of medical staff. The outflow pipeline is provided with a blood transfusion device, which is provided with a filter element for filtering out substances such as thrombus in the blood, and the purification device is used to purify the blood after blood sampling before inputting it into the outflow pipeline. The pericardial blood that has passed through the outflow pipeline is returned to the patient's body through the indwelling needle. Therefore, in the technical solution of the present invention, the device can automatically provide suction power and has the sampling and purification functions of pericardial hemorrhage. The sampling equipment, the purification equipment, the blood pump, the first valve and the second valve can all be controlled by the controller. Therefore, the operation of autologous blood transfusion after pericardial puncture frees the hands of medical staff to provide more timely rescue and treatment to patients, thereby solving the problem in the existing technology that the work intensity of medical staff is high and it is not conducive to the automatic control of blood transfusion during the operation of autologous blood transfusion after pericardial puncture.

[0039] The filter element can be a filter mesh, which can not only filter out blood clots, but also filter out debris and other substances in the blood.

[0040] Please refer to Figure 2Preferably, the inlet pipeline is connected with a first flow meter, a first flow control valve and a blood receiving component in sequence along the direction from the blood pump to the sampling device; the outflow pipeline is connected with the blood transfusion device, a second flow control valve and a second flow meter in sequence along the direction from the sampling device to the indwelling needle; the inlet of the first flow meter is connected with the outlet of the blood pump, and the outlet of the blood receiving component is used to connect with the sampling inlet; the inlet of the blood transfusion device is connected with the first sampling outlet, and the outlet of the second flow meter is used to connect with the indwelling needle; the closed device for reinfusion of autologous blood after pericardial puncture also includes a bypass pipe, which is used to return the blood limited by the first flow meter to the inlet of the blood pump, and a third valve is provided on the bypass pipe, and the third valve is communicatively connected with the controller.

[0041] Specifically, the controller can control the speed of the blood pump to adjust the flow of pericardial blood entering the device, or medical staff can manually adjust the speed of the blood pump as needed to make the flow of pericardial blood entering the device meet the needs.

[0042] The first flowmeter is used to measure the liquid flow entering the device, i.e., the first flow data. The flow entering the device is monitored in real time, and the first flow data is sent to the controller. The first flow control valve is used to control the liquid flow entering the blood receiving component. The first flow control valve adjusts the opening according to the instructions of the controller to accurately control the flow entering the blood receiving component. The first flowmeter and the second flowmeter in the present invention can be turbine flowmeters or electromagnetic flowmeters. The first flow control valve and the second flow control valve in the present invention can be electric control valves.

[0043] The blood containment component of the present invention serves as an intermediate storage container between the pericardial blood inlet and outlet lines, smoothing out flow rate fluctuations and providing additional control flexibility. The blood containment component has a certain volume, capable of storing a certain amount of liquid to accommodate flow rate fluctuations. This allows for a certain degree of adjustment and operational flexibility between the rate at which pericardial blood is withdrawn from the patient and the rate at which it is returned to the patient. For example, the flow rate of blood entering the blood containment component can be independently controlled by a first flow control valve, while the flow rate of blood returned to the patient can be independently controlled by a second flow control valve.

[0044] Furthermore, the second flow control valve of the present invention can accurately control the flow rate of pericardial hemorrhage from the blood receiving component into the patient's body, i.e., the second flow rate data. The second flow control valve receives a flow control signal from the controller to adjust the flow rate of blood returned to the patient. The second flow meter is used to measure the actual flow rate of blood returned to the patient.

[0045] Furthermore, when the controller needs to adjust and reduce the flow rate through the first flow control valve, the excess flow can flow back to the inlet of the blood pump through the bypass pipe. The controller adjusts the opening of the third valve on the bypass pipe according to the blood flow rate flowing through the bypass pipe.

[0046] Preferably, the blood receiving component is connected to an injection tube, and the injection tube is provided with a connecting joint to connect an external injection drug; the injection tube is also provided with an infusion metering pump, and the infusion metering pump is communicatively connected to the controller.

[0047] Specifically, the injectable drug can be determined by a doctor, and the container of the injectable drug can be connected to the connecting joint.

[0048] Furthermore, the injected drug can also be determined by the controller and displayed on the display screen based on the sampling data and ECG monitoring data. For example, it can be determined as the following types:

[0049] Anticoagulants: If the blood clots are due to a clotting disorder, you may need to take an anticoagulant drug (such as heparin) to prevent further bleeding.

[0050] Hemostatic drugs: If bleeding does not stop, hemostatic drugs (such as thrombin, vitamin K, etc.) may be needed to promote hemostasis.

[0051] Antibiotics: If an infection is suspected, antibiotics may be needed to prevent or treat the infection.

[0052] Analgesics: used to relieve pain. Commonly used analgesics include nonsteroidal anti-inflammatory drugs (NSAIDs) and opioids.

[0053] Cardiovascular support drugs: such as dopamine, norepinephrine, etc., used to maintain blood pressure and heart function.

[0054] An infusion pump (also known as an infusion pump or syringe pump) is a medical device used to precisely control the rate and total amount of fluids (such as medications, nutritional solutions, or blood products) delivered. It plays a vital role in clinical care, particularly in situations where precise control of the volume and rate of infusion is required, ensuring that medications or fluids are delivered to the patient at a predetermined rate. This is particularly important for medications requiring strict dosage control.

[0055] In the present invention, by setting the total infusion volume of the infusion quantitative pump, the infusion can be automatically stopped when the preset total volume is reached, thereby avoiding excessive infusion.

[0056] Further, in the present application, the data display and data recording functions of the infusion pump are set on the control panel to display the current injection drug type, infusion rate, infusion volume, remaining time and alarm information of the infusion pump. Medical staff can monitor and record in real time through these information, which is convenient for managing the treatment process of patients.

[0057] Preferably, the sampling device comprises a blood gas analysis unit and a blood routine analysis unit, which are respectively communicatively connected with the controller.

[0058] In the present embodiment, the data obtained by the blood gas analysis unit are as follows:

[0059] (1) Oxygenation data: Pericardial effusion can lead to a decrease in cardiac output, which in turn affects oxygenation. Blood gas analysis can measure the partial pressure of oxygen (PaO2) and oxygen saturation (SaO2) in arterial blood to assess the patient's oxygenation level.

[0060] (2) Acid-base balance data: Pericardial effusion can lead to inadequate tissue perfusion, causing metabolic acidosis. Blood gas analysis can measure pH, bicarbonate (HCO3-) and carbon dioxide partial pressure (PaCO2) to assess the patient's acid-base balance status.

[0061] (3) Metabolic data: By measuring lactate levels, the tissue hypoxia and metabolic status can be assessed. High lactate levels may indicate inadequate tissue perfusion or hypoxia.

[0062] The indicators of blood gas analysis are as follows:

[0063] (1) pH: The normal range is 7.35 to 7.45, below 7.35 indicates acidosis, and above 7.45 indicates alkalosis.

[0064] (2) Partial pressure of oxygen (PaO2): The normal range is 80 to 100 mmHg, below 80 mmHg indicates hypoxemia.

[0065] (3) Oxygen saturation (SaO2): The normal range is 95% to 100%, below 95% indicates inadequate oxygenation.

[0066] (4) Carbon dioxide partial pressure (PaCO2): The normal range is 35-45 mmHg, below 35 mmHg indicates respiratory alkalosis, and above 45 mmHg indicates respiratory acidosis.

[0067] (5) Bicarbonate (HCO3-): The normal range is 22-28 mEq / L, below 22 mEq / L indicates metabolic acidosis, and above 28 mEq / L indicates metabolic alkalosis.

[0068] (6) Lactate: The normal range is less than 2mmol / L. Levels above 2mmol / L may indicate tissue hypoxia or metabolic abnormalities.

[0069] During the operation, blood gas analysis at preset intervals can monitor the effect, adjust the pericardial blood aspiration and reinfusion plan, and ensure the patient's condition is stable.

[0070] In this embodiment, the data obtained by the blood routine analysis unit is as follows:

[0071] A routine blood test can provide important information about a patient's overall condition, helping doctors assess their condition and develop treatment plans. The following describes the significance of a routine blood test and common treatment measures for patients with hemopericardium.

[0072] The significance of routine blood analysis:

[0073] (1) Red blood cell count (RBC) and hemoglobin (Hb): used to assess the degree of anemia. Hemopericardium may lead to hemorrhagic anemia, which is manifested by a decrease in red blood cell count and hemoglobin level.

[0074] (2) White blood cell count (WBC): Assess whether there is infection or inflammation. Hemopericardium may be accompanied by infection or inflammation, which manifests as an elevated white blood cell count.

[0075] (3) Platelet count (PLT): Assess coagulation function. Thrombocytopenia may indicate coagulation dysfunction and increase the risk of bleeding.

[0076] (4) Hematocrit (Hct): Assess the degree of hemoconcentration. Hemopericardium may lead to hemoconcentration, which is manifested as an increase in hematocrit.

[0077] (5) Mean Corpuscular Volume (MCV): Assess the size of red blood cells. Helps differentiate between different types of anemia.

[0078] The treatment measures are as follows:

[0079] (1) Red blood cell transfusion: If the patient has significant anemia due to blood loss, red blood cell transfusion may be required to restore blood volume and oxygenation capacity.

[0080] (2) Whole blood transfusion: In cases of severe blood loss, whole blood transfusion may be required.

[0081] (3) Drug treatment, including:

[0082] Hemostatic drugs: such as thrombin, vitamin K, etc., used to promote hemostasis.

[0083] Anticoagulants: If the blood clots are due to a clotting disorder, you may need to take an anticoagulant drug (such as heparin) to prevent further bleeding.

[0084] Antibiotics: If an infection is suspected, antibiotics may be needed to prevent or treat the infection.

[0085] Supportive care may also involve:

[0086] Fluid resuscitation: Intravenous fluids are given to replenish blood volume and maintain blood pressure and cardiac output.

[0087] Oxygen therapy: If the patient has hypoxemia, oxygen therapy is needed to improve oxygenation.

[0088] Cardiovascular support drugs: such as dopamine, norepinephrine, etc., used to maintain blood pressure and heart function.

[0089] Specifically, blood gas analysis and routine blood test results are displayed on the control panel. The controller analyzes these results and presents preset recommendations on the control panel, corresponding to the analysis results. These recommendations can be used to correct blood gas and routine blood test abnormalities, if necessary, such as using sodium bicarbonate to correct metabolic acidosis and oxygen to treat hypoxemia. In summary, blood gas analysis in patients with hemopericardium is an important tool for assessing oxygenation status, acid-base balance, and metabolic status. These indicators allow physicians to promptly identify and address potential complications, improving patient outcomes.

[0090] Preferably, the purification device comprises a primary filter, a centrifuge, a washing system and a secondary filter which are sequentially connected along the direction of blood flow.

[0091] Specifically, in the present invention, after sampling, pericardial hemorrhage can pass through the purification equipment and then enter the outflow pipeline, or directly enter the outflow pipeline. Even if there is pericardial hemorrhage that has not passed through the purification equipment, thrombus and other substances can be filtered through the blood transfusion device provided in the outflow pipeline of the present invention, thereby effectively improving the safety of blood transfusion.

[0092] The primary filter is used to initially filter out large particles (such as tissue fragments and clots) from the blood. The centrifuge separates the different components of the blood through centrifugal force, and the washing system is used to remove harmful substances (such as free hemoglobin, white blood cells, and platelets). The washing system can be a saline washing system, which improves blood purity through multiple washes. The secondary filter is used to further filter out small particles and impurities from the blood.

[0093] See also Figure 3 Preferably, the controller, the purification device, the second interface, the blood pump, the inlet pipeline, the sampling device and the outflow pipeline are respectively accommodated in the shell, and the first interface, the indwelling needle and the connecting joint are respectively arranged outside the shell; the shell is also provided with a control panel connected to the controller.

[0094] Necessary interfaces, for example, the first interface, the interface for connecting the indwelling needle, and the connecting connector can be respectively arranged outside the housing, while the remaining components are accommodated in the housing to form the device as a whole.

[0095] Furthermore, an observation window may be provided in a part of the housing, for example, an observation window may be provided at a position corresponding to the blood receiving component, so as to facilitate observation of the state of the blood.

[0096] The control panel includes a control interface and a display screen.

[0097] The display shows the operating parameters and status of each component connected to the controller.

[0098] The control interface is used to control the various components connected to the controller.

[0099] Preferably, the blood receiving component is further provided with a liquid level meter, which is communicatively connected to the controller. The liquid level meter is connected to the controller and is configured to transmit a liquid level signal within the blood receiving component to the controller. The controller calculates the blood volume within the blood receiving component based on the liquid level signal fed back by the liquid level meter, calculates the liquid inflow rate within the blood receiving component based on the flow data from the first flow control valve, and thereby calculates the flow control range of the second flow control valve. If the second flow data fed back by the second flow meter exceeds the flow control range, the controller adjusts the flow data of the second flow control valve downward.

[0100] Preferably, the controller is further configured to connect to an electrocardiogram monitoring device; the controller is configured to:

[0101] After starting the machine, opening the first valve and closing the second valve;

[0102] Acquiring monitoring data from the electrocardiogram monitoring device and sampling data from the sampling device, and determining whether to generate a purification signal based on the monitoring data and the sampling data;

[0103] After the purge signal is generated, the first valve is closed and the second valve is opened.

[0104] Specifically, in this embodiment, it is defaulted that the pericardial hemorrhage flows directly into the outflow pipeline without purification after starting the machine, so as to shorten the time for returning the pericardial hemorrhage to the patient's body in an emergency situation, so as to cope with the emergency.

[0105] When the monitoring data of the ECG monitoring device reaches a set data interval and the sampling data does not reach the sampling standard data, the controller generates a purification signal to close the first valve and open the second valve, so that the pericardial blood enters the outflow pipeline after purification, and the controller further obtains the monitoring data and sampling data for analysis;

[0106] If the monitoring data of the ECG monitoring device does not reach the set data interval, the first valve is controlled to open and the second valve is controlled to close to suspend the purification function.

[0107] Preferably, the controller is further configured to:

[0108] controlling the blood pump to operate according to set operating parameters to provide a set flow rate;

[0109] When the monitoring data of the electrocardiogram monitoring device does not reach a set data interval, generating an adjustment working parameter for lowering the suction rate of the blood pump;

[0110] controlling the blood pump to operate at the adjusted operating parameters to reduce the outlet flow of the blood pump to an adjusted flow rate;

[0111] determining, based on first flow data from the first flow meter, whether the outlet flow of the blood pump is adjusted down to an adjusted flow rate;

[0112] If not, lowering the opening of the first flow control valve so that the flow entering the blood receiving component meets the adjusted flow;

[0113] The extraction volume of the pericardial effusion is calculated, and when the set extraction volume is reached, a stop signal is sent to the blood pump.

[0114] Specifically, the present invention associates the pericardial effusion suction rate of the blood pump with the monitoring data of the electrocardiogram monitoring device and the sampling data of the sampling device.

[0115] Specifically, the blood pump of the present invention does not operate continuously after startup. Instead, it initially operates at a set, relatively slow flow rate. After startup, the controller calculates changes in the monitoring data from the ECG monitor. If the monitoring data from the ECG monitor remains within the set range, the controller controls the blood pump to increase the flow rate to a flow rate slightly faster than the set flow rate. If the monitoring data from the ECG monitor exceeds the set range, the controller controls the blood pump to decrease the flow rate to an adjusted flow rate slightly slower than the set flow rate. When the set flow rate is adjusted to an adjusted flow rate, the flow rate is adjusted according to a set flow adjustment gradient.

[0116] Furthermore, the present invention also sets a pericardial effusion extraction volume to avoid excessive pericardial effusion extraction.

[0117] Preferably, the controller is further configured to:

[0118] generating a recommended injection drug type based on the monitoring data of the electrocardiogram monitoring device and the sampling data of the sampling device;

[0119] Obtain the type of medication to be injected;

[0120] Determining a quantitative signal of the infusion quantitative pump according to the type of medicine to be injected;

[0121] The infusion quantitative pump is controlled according to the quantitative signal of the infusion quantitative pump.

[0122] For example, when the monitoring data of the ECG monitoring device shows abnormal blood pressure and heart function, the recommended injection drug type generated may be cardiovascular support drugs. When the blood sampled by the sampling device is found to be infected, the recommended injection drug type generated may be anti-infective drugs.

[0123] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course, by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a computer-readable storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to enter the method described in each embodiment of the present invention.

[0124] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0125] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0126] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sealed device for autologous blood transfusion after pericardiocentesis, characterized in that: The invention comprises a controller, a purification device, and a first connector, a blood pump, an inlet pipeline, a sampling device and an outflow pipeline connected in sequence; the first connector comprises a first interface and a second interface; the first interface is used to connect to a pericardiocentesis catheter, and the second interface is used to connect to the blood pump; the outflow pipeline is provided with a blood transfusion device, a filter element is provided in the blood transfusion device, and the outlet of the outflow pipeline is used to connect to an indwelling needle; the sampling device is provided with a sampling inlet, a first sampling outlet and a second sampling outlet; the sampling inlet is connected to the outlet of the inlet pipeline, the first sampling outlet is used to connect to the outflow pipeline, the second sampling outlet is used to connect to the inlet of the purification device, and the outlet of the purification device is connected to the first end of the return pipeline; a first valve is provided between the first sampling outlet and the outflow pipeline, and a second valve is provided between the second sampling outlet and the inlet of the purification device; the second end of the return pipeline is connected to between the first valve and the outflow pipeline; the sampling device, the purification device, the blood pump, the first valve and the second valve are respectively communicated with the controller; The purification device includes a primary filter, a centrifuge, a washing system and a secondary filter which are sequentially connected along the direction of blood flow; The inlet pipeline is connected to the first flow meter, the first flow control valve and the blood receiving component in sequence along the direction from the blood pump to the sampling device; the outflow pipeline is connected to the blood transfusion device, the second flow control valve and the second flow meter in sequence along the direction from the sampling device to the indwelling needle; The blood receiving component is further provided with a liquid level meter, and the liquid level meter is communicatively connected with the controller; The liquid level meter is connected to the controller and is used to send a liquid level signal in the blood receiving component to the controller. The controller calculates the blood volume in the blood receiving component based on the liquid level signal fed back by the liquid level meter, calculates the liquid inflow speed in the blood receiving component based on the flow data of the first flow control valve, and thus calculates the flow control range of the second flow control valve. When the second flow data fed back by the second flow meter exceeds the flow control range, the controller reduces the flow data of the second flow control valve.

2. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 1, characterized in that: The inlet of the first flow meter is connected to the outlet of the blood pump, and the outlet of the blood receiving component is used to connect to the sampling inlet; the inlet of the blood transfusion device is connected to the first sampling outlet, and the outlet of the second flow meter is used to connect to the indwelling needle; the closed device for autologous blood reinfusion after pericardial puncture also includes a bypass pipe, which is used to return the blood limited by the first flow meter to the inlet of the blood pump. A third valve is provided on the bypass pipe, and the third valve is communicatively connected to the controller.

3. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 2, characterized in that: The blood receiving component is connected to an injection tube, and the injection tube is provided with a connecting joint to connect an external injection drug; the injection tube is also provided with an infusion quantitative pump, and the infusion quantitative pump is communicatively connected to the controller.

4. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 1, characterized in that: The sampling device includes a blood gas analysis unit and a blood routine analysis unit which are respectively connected to the controller for communication.

5. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 3, characterized in that: The controller, the purification device, the second interface, the blood pump, the inlet pipeline, the sampling device and the outflow pipeline are respectively accommodated in the shell, and the first interface, the indwelling needle and the connecting joint are respectively arranged outside the shell; a control panel connected to the controller is also provided on the shell.

6. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 3, characterized in that: The controller is also used to connect to an ECG monitoring device; the controller is used to: After starting the machine, opening the first valve and closing the second valve; Acquiring monitoring data from the electrocardiogram monitoring device and sampling data from the sampling device, and determining whether to generate a purification signal based on the monitoring data and the sampling data; After the purge signal is generated, the first valve is closed and the second valve is opened.

7. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 6, characterized in that: The controller is also used for: controlling the blood pump to operate according to set operating parameters to provide a set flow rate; When the monitoring data of the electrocardiogram monitoring device does not reach a set data interval, generating an adjustment working parameter for lowering the suction rate of the blood pump; controlling the blood pump to operate at the adjusted operating parameters to reduce the outlet flow of the blood pump to an adjusted flow rate; determining, based on first flow data from the first flow meter, whether the outlet flow of the blood pump is adjusted down to an adjusted flow rate; If not, lowering the opening of the first flow control valve so that the flow entering the blood receiving component meets the adjusted flow; The extraction volume of pericardial effusion is calculated, and when the set extraction volume is reached, a stop signal is sent to the blood pump.

8. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 7, characterized in that: The controller is also used for: generating a recommended injection drug type based on the monitoring data of the electrocardiogram monitoring device and the sampling data of the sampling device; Obtain the type of medication to be injected; Determining a quantitative signal of the infusion quantitative pump according to the type of medicine to be injected; The infusion quantitative pump is controlled according to the quantitative signal of the infusion quantitative pump.

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