Airtight device for autologous blood transfusion after pericardiocentesis

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses a pericardiocentesis autoblood transfusion sealing device which comprises a controller, a purification device, a first connector, a blood pump, an inlet pipeline, a sampling device and an outlet pipeline. The outflow pipeline is provided with a blood transfusion device, a filtering element is arranged in the blood transfusion device, and an outlet of the outflow pipeline is connected with a remaining needle; the sampling equipment comprises a sampling inlet, a first sampling outlet and a second sampling outlet; the sampling inlet is communicated with an outlet of the inlet pipeline, the first sampling outlet is communicated with the outlet pipeline, the second sampling outlet is communicated with an inlet of the purification equipment, and an outlet of the purification equipment is communicated with a first end of the return pipeline; a first valve is arranged between the first sampling outlet and the outflow pipeline, and a second valve is arranged between the second sampling outlet and the inlet of the purification equipment; the second end of the backflow pipeline is communicated between the first valve and the outflow pipeline. Automatic control over autologous blood transfusion after pericardiocentesis can be achieved easily, and the working intensity of medical workers is reduced.

Description

Technical Field

[0001] The 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 surface of the heart. The pericardium is divided into a fibrous layer and a serous layer. The fibrous layer is relatively tough and closely adheres to the parietal layer of the serous layer, with little elasticity. The serous layer is very thin, smooth and moist, and is divided into a parietal layer and a visceral layer. The parietal layer is closely attached to the inner surface of the fibrous layer, and the visceral layer is attached to the surface of the heart (i.e., the epicardium). There is a cavity between the visceral and parietal layers, called the pericardial cavity. The pericardium has a protective effect on the heart and can prevent excessive expansion of the heart cavity to maintain 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 both a diagnostic measure and an emergency treatment measure to relieve pericardial tamponade.

[0004] After pericardiocentesis, in order to reduce blood waste and allogeneic blood transfusion, the extracted pericardial blood can be returned to the patient through the vein under standardized operation. Autologous blood recovery technology is the process of collecting lost blood through an autologous blood transfusion device and then returning it to the donor through a series of operations.

[0005] In the prior art, the entire post-pericardial puncture autologous blood transfusion process is manually completed by medical staff, who connect the post-pericardial puncture catheter to the syringe, draw the blood in the pericardium into the syringe by pulling the syringe, and then push the syringe to return the blood in the syringe to the patient through the pipeline. During the post-pericardial puncture autologous blood transfusion operation, the medical staff have a high workload and are not conducive to the automatic control of blood transfusion. Summary of the invention

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

[0007] To achieve the above-mentioned purpose, the present invention provides a closed device for autologous blood reinfusion after pericardiocentesis, comprising a controller, a purification device, and a first joint, a blood pump, an inlet pipeline, a sampling device and an outflow pipeline connected in sequence; the first joint comprises a first interface and a second interface; the first interface is used to connect to the 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 the 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 reflux 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 reflux 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 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 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, and a third valve is arranged 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 comprises a blood gas analysis unit and a blood routine analysis unit which are respectively communicatively connected to the controller.

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

[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 arranged 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 also used to connect to an ECG monitoring device; the controller is used to:

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

[0016] Acquire monitoring data of the ECG monitoring device and sampling data of the sampling device, and determine whether to generate a purification signal according to 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 used for:

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

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

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

[0022] determining, according to first flow data of 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 used for:

[0026] Generate a recommended injection drug type based on the monitoring data of the ECG 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, the pericardial puncture catheter is connected to the autologous blood return closed device through the first interface of the first connector, and the blood pump provides power for the inflow of pericardial blood, and inputs the pericardial blood into the pipeline and flows into the sampling device for blood sample detection; after blood sampling, according to the sampling results or the settings of medical staff, the pericardial blood can enter the outflow pipeline or enter the purification device; wherein, the outflow pipeline is provided with a blood transfusion device, and the blood transfusion device is provided with a filter element for filtering out thrombus and other substances in the blood, and the purification device is used to purify the blood after blood sampling and then input it into the outflow pipeline. The pericardial blood that has passed through the outflow pipeline is transfused back into 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 functions of sampling and purifying pericardial hemorrhage. The sampling equipment, the purification equipment, the blood pump, the first valve and the second valve can all be controlled by a controller, so that the operation of autologous blood transfusion after pericardial puncture frees the hands of medical staff to provide more timely rescue and treatment for patients, thereby solving the problem in the prior art that in the operation of autologous blood transfusion after pericardial puncture, the work intensity of medical staff is high and it is not conducive to the automatic control of blood transfusion. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0033] Figure 3 It is a schematic diagram of the sealed device for autologous blood reinfusion after pericardial puncture of the present invention being accommodated in a shell.

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings 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 used 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 meanings. Therefore, "unit", "component" or "unit" can be used in a mixed manner.

[0037] See also Figures 1 to 3 The present invention provides a closed device for reinfusion of autologous blood after pericardial puncture, comprising a controller, a purification device, and a first joint, a blood pump, an inlet pipeline, a sampling device and an outflow pipeline connected in sequence; the first joint comprises a first interface and a second interface; the first interface is used to connect to a pericardial puncture 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 reflux 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 reflux 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 connected to the controller for communication.

[0038] In the technical solution of the present invention, the pericardial puncture catheter is connected to the autologous blood return closed device through the first interface of the first connector, and the blood pump provides power for the inflow of pericardial blood, and inputs the pericardial blood into the pipeline and flows into the sampling device for blood sample detection; after blood sampling, according to the sampling results or the settings of medical staff, the pericardial blood can enter the outflow pipeline or enter the purification device; wherein, the outflow pipeline is provided with a blood transfusion device, and the blood transfusion device is provided with a filter element for filtering out thrombus and other substances in the blood, and the purification device is used to purify the blood after blood sampling and then input it into the outflow pipeline. The pericardial blood that has passed through the outflow pipeline is transfused back into 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 functions of sampling and purifying pericardial hemorrhage. The sampling equipment, the purification equipment, the blood pump, the first valve and the second valve can all be controlled by a controller, so that the operation of autologous blood transfusion after pericardial puncture frees the hands of medical staff to provide more timely rescue and treatment for patients, thereby solving the problem in the prior art that in the operation of autologous blood transfusion after pericardial puncture, the work intensity of medical staff is high and it is not conducive to the automatic control of blood transfusion.

[0039] The filter element can be a filter net, 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 autologous blood reinfusion after pericardial puncture also includes a bypass pipeline, 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 arranged on the bypass pipeline, and the third valve is communicatively connected with the controller.

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

[0042] The first flow meter is used to measure the liquid flow entering the device, that is, 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 instruction of the controller to accurately control the flow entering the blood receiving component. The first flow meter and the second flow meter in the present invention can be turbine flow meters or electromagnetic flow meters. The first flow control valve and the second flow control valve in the present invention can be electric control valves.

[0043] The blood receiving component in the present invention is used as an intermediate storage container between the inlet and outlet pipelines of the pericardial blood to smooth out flow rate fluctuations and provide additional control flexibility. The blood receiving component has a certain volume and can store a certain amount of liquid to cope with flow changes. As a result, there can be a certain adjustment and operating space between the rate at which the pericardial blood is extracted from the patient's body and the rate at which the pericardial blood is returned to the patient's body. For example, the flow rate of blood entering the blood receiving component can be controlled separately by the first flow control valve, while the flow rate of blood returned to the patient's body can be controlled separately by the second flow control valve.

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

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

[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 injectable drug container is 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 the ECG monitoring data. For example, it can be determined as the following types:

[0049] Anticoagulant drugs: If the bleeding is 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 dosing pump (also called an infusion pump or syringe pump) is a medical device used to accurately control the infusion rate and total amount of liquids (such as drugs, nutrient solutions or blood products). It plays an important role in clinical care, especially in situations where the amount and rate of infusion need to be accurately controlled to ensure that the drug or liquid is infused into the patient at a predetermined rate. This is especially important for drugs that require 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] Furthermore, in the present invention, the data display and data recording functions of the infusion quantitative 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 quantitative pump. Medical staff can monitor and record these information in real time, which is convenient for managing the patient's treatment process.

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

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

[0059] (1) Oxygenation status data: Pericardial hemorrhage may lead to a decrease in cardiac output, which in turn affects oxygenation. Blood gas analysis can measure the partial pressure of oxygen in arterial blood (PaO 2 ) and oxygen saturation (SaO 2 ), assess the patient's oxygenation level.

[0060] (2) Acid-base balance data: Hemopericardium may lead to tissue hypoperfusion and cause metabolic acidosis. Blood gas analysis can measure pH, bicarbonate (HCO 3 -) and partial pressure of carbon dioxide (PaCO 2 ), assess the patient's acid-base status.

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

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

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

[0064] (2) Oxygen partial pressure (PaO 2 ): The normal range is 80 to 100 mmHg, and below 80 mmHg indicates hypoxemia.

[0065] (3) Oxygen saturation (SaO 2 ): The normal range is 95% to 100%, and anything below 95% indicates inadequate oxygenation.

[0066] (4) Carbon dioxide partial pressure (PaCO 2 ): The normal range is 35-45 mmHg. Below 35 mmHg indicates respiratory alkalosis, and above 45 mmHg indicates respiratory acidosis.

[0067] (5) Bicarbonate (HCO 3-): The normal range is 22-28mEq / L. Below 22mEq / L indicates metabolic acidosis, and above 28mEq / 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 stable condition.

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

[0071] Routine blood analysis can provide important information about the patient's overall condition, helping doctors assess the condition and develop treatment plans. The following is the significance of routine blood analysis and common treatment measures for patients with pericardial hemorrhage.

[0072] The significance of blood routine 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): evaluates 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 to differentiate different types of anemia.

[0078] The treatment measures are as follows:

[0079] (1) Red blood cell transfusion: If the patient has significant hemorrhagic anemia, 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] Anticoagulant drugs: If the bleeding is 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: Fluids are given intravenously 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, the blood gas analysis results and the blood routine analysis results are displayed on the control panel. The controller analyzes the blood gas analysis results and the blood routine analysis results, and prompts the preset recommended solutions corresponding to the analysis results on the control panel to correct the abnormal blood gas and blood routine conditions when necessary: ​​such as using sodium bicarbonate to correct metabolic acidosis, using oxygen to treat hypoxemia, etc. In summary, blood gas analysis of patients with pericardial hemorrhage is an important means to evaluate oxygenation status, acid-base balance, and metabolic conditions. Through these indicators, doctors can promptly detect and deal with potential complications and improve patient prognosis.

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

[0091] Specifically, in the present invention, after sampling, pericardial hemorrhage can enter the outflow pipeline through a purification device, or directly enter the outflow pipeline. Even if there is pericardial hemorrhage that does not pass through the purification device, 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 in the blood (such as tissue fragments, clots, etc.). The centrifuge separates the different components in the blood through centrifugal force, and the washing system is used to remove harmful substances in the blood (such as free hemoglobin, white blood cells, platelets, etc.). The washing system can be a saline washing system, which improves the purity of the blood through multiple washings. The secondary filter is used to further filter out tiny particles and impurities in the blood.

[0093] See also Figure 3Preferably, 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 arranged on the shell.

[0094] Necessary interfaces, for example, the first interface, the interface for connecting the indwelling needle and the connecting connector can be arranged outside the housing respectively, 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 shell, for example, an observation window may be provided at a position corresponding to the blood receiving component, so as to observe the state of the blood.

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

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

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

[0099] Preferably, 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 with 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 according to the liquid level signal fed back by the liquid level meter, and calculates the liquid inlet speed in the blood receiving component according to the flow data of the first flow control valve, thereby calculating the flow control interval of the second flow control valve, and when the second flow data fed back by the second flow meter exceeds the flow control interval, the flow data of the second flow control valve is lowered.

[0100] Preferably, the controller is also used to connect to an ECG monitoring device; the controller is used to:

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

[0102] Acquire monitoring data of the ECG monitoring device and sampling data of the sampling device, and determine whether to generate a purification signal according to 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 assumed that the pericardial hemorrhage flows directly into the outflow pipeline without being purified after starting the machine, so as to shorten the time for the pericardial hemorrhage to be returned to the patient's body in an emergency situation, so as to cope with the emergency situation.

[0105] When the monitoring data of the ECG monitoring device reaches the 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 the 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 used for:

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

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

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

[0111] determining, according to first flow data of 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 in the present invention does not work continuously after starting up, but works at a set slower set flow rate at the beginning, and after starting up, the controller calculates the changes in the monitoring data of the ECG monitoring device. If the monitoring data of the ECG monitoring device is still within the set range, the controller controls the blood pump to increase the flow rate to adjust to a flow rate slightly faster than the set flow rate; if the monitoring data of the ECG monitoring device exceeds the set range, the controller controls the blood pump to decrease the flow rate to adjust to an adjusted flow rate slightly slower than the set flow rate. Among them, when the set flow rate is adjusted to the adjusted flow rate, it is adjusted according to the set flow adjustment gradient.

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

[0117] Preferably, the controller is further used for:

[0118] Generate a recommended injection drug type based on the monitoring data of the ECG 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 drug. When the blood sampled by the sampling device is found to be infected, the recommended injection drug type generated may be anti-infection drug.

[0123] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially 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 article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0125] The serial numbers of the above embodiments of the present invention are only for description 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 specification 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 closed device for autologous blood transfusion after pericardiocentesis, characterized in that: The invention comprises a controller, a purification device, and a first joint, a blood pump, an inlet pipeline, a sampling device and an outflow pipeline which are connected in sequence; the first joint comprises a first interface and a second interface; the first interface is used to connect to a pericardial puncture 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 reflux 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 reflux 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 connected to the controller for communication.

2. The closed device for autologous blood reinfusion after pericardiocentesis according to claim 1, characterized in that: 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 autologous blood reinfusion after pericardial puncture also includes a bypass pipeline, 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 arranged on the bypass pipeline, and the third valve is communicatively connected with the controller.

3. The closed 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 with the controller.

4. The closed 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 closed device for autologous blood reinfusion after pericardiocentesis according to claim 1, characterized in that: The purification device comprises a primary filter, a centrifuge, a washing system and a secondary filter which are sequentially connected along the blood flow direction.

6. The closed 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 outlet 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 arranged on the shell.

7. The closed device for autologous blood reinfusion after pericardiocentesis according to claim 2, characterized in that: The blood receiving component is also provided with a liquid level meter, and the liquid level meter is communicatively connected with the controller.

8. The closed 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; Acquire monitoring data of the ECG monitoring device and sampling data of the sampling device, and determine whether to generate a purification signal according to the monitoring data and the sampling data; After the purge signal is generated, the first valve is closed and the second valve is opened.

9. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 8, characterized in that: The controller is also used for: Controlling the blood pump to operate at set operating parameters to provide a set flow rate; When the monitoring data of the electrocardiogram monitoring device does not reach the set data interval, generating an adjustment working parameter for lowering the suction rate of the blood pump; Controlling the blood pump to operate with the adjusted operating parameters to reduce the outlet flow rate of the blood pump to an adjusted flow rate; determining, according to first flow data of 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 the pericardial effusion is calculated, and when the set extraction volume is reached, a stop signal is sent to the blood pump.

10. The sealed device for autologous blood reinfusion after pericardiocentesis according to claim 9, characterized in that: The controller is also used for: Generate a recommended injection drug type based on the monitoring data of the ECG 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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