Blood filtration device with blood gas analysis function

Abstract

The invention relates to the field of medical instruments, in particular to a blood filtering device with a blood gas analysis function, which comprises a shell, a shell is arranged in the shell, filtering fibers are arranged in the shell, a blood inlet tube and a blood outlet tube are arranged on the front side of the shell, and one end of the blood inlet tube and one end of the blood outlet tube are communicated with an inner cavity of the shell. The liquid storage cavity, the blood gas branch pipe, the connecting pipe and the blood inlet pipe are sequentially communicated, a first electromagnetic valve is arranged on the surface of the connecting pipe, a first liquid pump is arranged on the surface of the blood gas branch pipe, and a pH value detector and an electrolyte detector are arranged in the liquid storage cavity and sequentially flow through the blood inlet pipe, an inner cavity of the shell and the blood outlet pipe; during circulation in the inner cavity of the shell, the blood filtering effect is achieved through the filtering effect of the filtering fibers, a first electromagnetic valve and a first liquid pump are started at regular time, so that part of blood sequentially flows through a connecting pipe and a blood gas branch pipe to enter a liquid storage cavity, the blood sequentially makes contact with a pH value detector and an electrolyte detector after passing through the blood gas branch pipe, and blood gas analysis is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a blood filtration device with a blood gas analysis function. Background Art

[0002] Hemofiltration is to introduce the patient's blood into a semi-permeable membrane filter with good permeability and equivalent to the area of ​​the glomerular filtration membrane. Due to the transmembrane pressure gradient between the blood area and the outside of the membrane, when the blood passes through the filter, except for formed components such as proteins and cells, water and most small and medium-molecule substances in the plasma are filtered out to achieve the therapeutic purpose of removing excess water and solutes retained in the blood. Blood gas analysis is an important technology in clinical diagnosis. It is a means of understanding the respiratory function, electrolyte level and acid-base balance of the human body by measuring the H+ concentration of human blood and the gas dissolved in the blood. It can directly reflect the lung ventilation function, electrolyte level and acid-base balance, and provide strong support for the diagnosis and treatment of diseases.

[0003] In clinical practice, patients who undergo both hemofiltration and blood gas analysis are mainly critically ill patients with acute renal injury and multiple organ failure. Due to their serious condition, these patients need hemofiltration to remove excess water and toxins from the body, and blood gas analysis is essential for monitoring the patient's acid-base balance and gas exchange status.

[0004] The prior art lacks a device that can simultaneously realize blood gas analysis and blood filtration functions, which requires medical staff to regularly draw blood samples during the blood filtration process and perform blood gas analysis using a blood gas analyzer. This process wastes time and increases the labor intensity of medical staff. In addition, the regular delivery of blood for inspection places a great test on the medical staff's sense of time and mental stress. Summary of the invention

[0005] The present application provides a blood filtration device with a blood gas analysis function to solve the technical problem that the inventors have recognized that there is a lack of a device in the prior art that can simultaneously realize blood gas analysis and blood filtration functions, resulting in the need for medical staff to regularly draw blood samples during the blood filtration process and perform blood gas analysis using a blood gas analyzer. This process wastes time and increases the labor intensity of the medical staff. In addition, the regular inspection has a great test on the medical staff's sense of time and mental stress.

[0006] The present application provides a blood filtration device with a blood gas analysis function, comprising a shell, an outer shell is arranged inside the shell, a filter fiber is arranged inside the outer shell, an inlet blood vessel and an outlet blood vessel are arranged on the front of the shell, one end of the inlet blood vessel and the outlet blood vessel are both connected to the inner cavity of the shell, and the other ends of the inlet blood vessel and the outlet blood vessel extend to the outside of the shell, a connecting tube and a blood gas branch tube are arranged inside the shell, one end of the connecting tube is connected to the surface of the inlet blood vessel, and the other end of the connecting tube is connected to one end of the blood gas branch tube, a liquid storage chamber is arranged inside the shell, and the other end of the blood gas branch tube extends to the inside of the liquid storage chamber, the liquid storage chamber, the blood gas branch tube, the connecting tube and the inlet blood vessel are connected in sequence, a first solenoid valve is arranged on the surface of the connecting tube, and a No. 1 liquid pump is arranged on the surface of the blood gas branch tube, a controller is arranged inside the shell, a pH value detector and an electrolyte detector are arranged inside the liquid storage chamber, and the pH value detector, the electrolyte detector, the first solenoid valve and the No. 1 liquid pump are all electrically connected to the controller.

[0007] In any of the above technical solutions, further, a flushing cavity is opened inside the shell, a flushing branch pipe is arranged inside the shell, one end of the flushing branch pipe is connected to the connecting pipe, the other end of the flushing branch pipe extends to the inside of the flushing cavity, the flushing cavity, the flushing branch pipe and the connecting pipe are connected, a No. 2 liquid pump is arranged on the surface of the flushing branch pipe, the No. 2 liquid pump is electrically connected to the controller, a liquid inlet pipe is arranged inside the shell, one end of the liquid inlet pipe is connected to the flushing cavity, the other end of the liquid inlet pipe extends to the outside of the shell, and a valve is arranged on the surface of the liquid inlet pipe and located outside the shell.

[0008] In any of the above technical solutions, further, a drain pipe is provided inside the shell, the number of the drain pipes is two, one of the drain pipes is connected to the inside of the liquid storage chamber, one of the drain pipes is connected to the inside of the flushing chamber, the bottoms of the two drain pipes extend to the outside of the shell, a No. 2 solenoid valve is provided on the surface of the drain pipe and located inside the shell, and the two No. 2 solenoid valves are electrically connected to the controller.

[0009] In any of the above technical solutions, further, the liquid storage chamber has a detection section and a liquid storage section, and the pH value detector and the electrolyte detector are both arranged in the detection section.

[0010] In any of the above technical solutions, further, a liquid level sensor is arranged inside the shell, and the number of the liquid level sensors is two, one of which is used to monitor the liquid level in the flushing cavity, and one of which is used to monitor the liquid level in the liquid storage section, and both of the liquid level sensors are electrically connected to the controller.

[0011] In any of the above technical solutions, further, a No. 3 solenoid valve is provided on the surface of the blood inlet and the blood outlet, and the No. 3 solenoid valve is electrically connected to the controller.

[0012] In any of the above technical solutions, further, a timer is arranged inside the shell, and the timer is electrically connected to the controller.

[0013] In any of the above technical solutions, further, a display screen is provided on the front side of the shell, and the display screen is electrically connected to the controller.

[0014] In any of the above technical solutions, further, a battery is arranged inside the shell, and the battery is used to power the controller, the No. 1 solenoid valve, the No. 2 solenoid valve, the No. 3 solenoid valve, the No. 1 liquid pump, the No. 2 liquid pump, the timer, the liquid level sensor, the display screen, the pH value detector and the electrolyte detector, and a charging hole is opened on one side of the shell.

[0015] In any of the above technical solutions, it further includes a replaceable inner shell, the filter limiter is arranged on the surface of the replaceable inner shell, an abutment plate is arranged on one side of the replaceable inner shell, one side of the abutment plate can be detachably connected to one side of the shell, and a handle is arranged on the other side of the abutment plate.

[0016] The beneficial effects of this application are mainly: 1. The blood flows through the inlet blood vessel, the inner cavity of the shell and the outlet blood vessel in sequence. When the blood flows through the inner cavity of the shell, the blood filtration effect is achieved through the filtering effect of the filter fiber. The first solenoid valve and the No. 1 liquid pump are started at a fixed time, so that part of the blood flows through the connecting tube and the blood gas branch tube to the liquid storage cavity in sequence. After passing through the blood gas branch tube, the blood will contact the pH detector and the electrolyte detector in sequence, so as to perform blood gas analysis on the blood, and finally display it on the display screen. In the process of blood filtration, blood gas analysis is performed regularly, so that medical staff do not need to send blood samples for inspection regularly, which relieves the labor intensity and work pressure of medical staff.

[0017] 2. After the first solenoid valve and liquid pump No. 1 have finished working, start liquid pump No. 2 and liquid pump No. 1 to allow the flushing liquid in the flushing chamber to flow through the flushing branch pipe, connecting pipe, blood gas branch pipe and flow into the liquid storage chamber in sequence to flush the blood in the detection section to ensure the detection accuracy during subsequent blood gas analysis.

[0018] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present application. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present application. At the same time, the specification and the drawings are used to explain the principles of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the blood filtration device according to an embodiment of the present application (front cross-sectional view); Figure 2 This is a schematic diagram of the structure of the blood filtration device according to an embodiment of the present application (front view); Figure 3 This is a schematic diagram of the structure of the housing, shell, filter fiber, abutment plate and handle in the embodiment of the present application (front cross-sectional view); Figure 4 This is a schematic diagram of the electronic control process in the embodiment of the present application.

[0021] icon: 100-shell; 101-outer shell; 102-filter fiber; 103-inlet blood vessel; 104-outlet blood vessel; 105-connecting tube; 106-blood gas branch tube; 107-liquid storage chamber; 108-first solenoid valve; 109-liquid pump No. 1; 110-controller; 111-pH value detector; 112-electrolyte detector; 113-flushing chamber; 114-flushing branch tube; 115-liquid pump No. 2; 116-liquid inlet pipe; 117-valve; 118-liquid discharge pipe; 119-solenoid valve No. 2; 120-detection section; 121-liquid storage section; 122-liquid level sensor; 123-solenoid valve No. 3; 124-timer; 125-display screen; 126-battery; 127-charging hole; 128-replacement of inner shell; 129-abutment plate; 130-handle; 131-liquid pump No. 3; 132-circulation pipe. DETAILED DESCRIPTION

[0022] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0023] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4In one or more embodiments, a blood filtration device with a blood gas analysis function is provided, including a shell 100, a shell 101 is arranged inside the shell 100, a filter fiber 102 is arranged inside the shell 101, an inlet blood vessel 103 and an outlet blood vessel 104 are arranged on the front of the shell 101, one end of the inlet blood vessel 103 and the outlet blood vessel 104 are both connected to the inner cavity of the shell 101, and the other ends of the inlet blood vessel 103 and the outlet blood vessel 104 extend to the outside of the shell 100, a connecting tube 105 and a blood gas branch tube 106 are arranged inside the shell 100, one end of the connecting tube 105 is connected to the surface of the inlet blood vessel 103, and the other end of the connecting tube 105 is connected to one end of the blood gas branch tube 106, and a liquid storage chamber 103 is arranged inside the shell 100. 7. The other end of the blood gas branch tube 106 extends to the interior of the liquid storage chamber 107. The liquid storage chamber 107, the blood gas branch tube 106, the connecting tube 105 and the blood inlet blood 103 are sequentially connected. A first solenoid valve 108 is arranged on the surface of the connecting tube 105. A No. 1 liquid pump 109 is arranged on the surface of the blood gas branch tube 106. A controller 110 is arranged inside the shell 100. A pH value detector 111 and an electrolyte detector 112 are arranged inside the liquid storage chamber 107. The pH value detector 111, the electrolyte detector 112, the first solenoid valve 108 and the No. 1 liquid pump 109 are all electrically connected to the controller 110. A No. 3 solenoid valve 123 is arranged on the surfaces of the blood inlet blood 103 and the blood outlet blood 104. The No. 3 solenoid valve 123 is electrically connected to the controller 110.

[0027] In this embodiment, a self-locking universal wheel can be provided at the bottom of the housing 100 to facilitate pushing the blood filter device to a suitable position, and connecting the corresponding pipelines to the blood inlet 103 and the blood outlet 104 respectively, wherein the pipelines are fixed to the corresponding positions of the patient, and then the No. 3 solenoid valve 123 is activated to put the blood inlet 103 and the blood outlet 104 in a circulation state, and the blood flows through the blood inlet 103, the inner cavity of the housing 101, and the blood outlet 104 in turn, and the blood is filtered by the filtering fiber 102 when the blood flows through the inner cavity of the housing 101, thereby achieving the blood filtration effect. The first solenoid valve 108 and the first liquid pump 109 are started at a fixed time at the same time, so that part of the blood flows through the connecting tube 105 and the blood gas branch tube 106 to the liquid storage chamber 107 in sequence. After passing through the blood gas branch tube 106, the blood will contact the pH value detector 111 and the electrolyte detector 112 in sequence, so as to perform blood gas analysis on the blood; wherein a heating wire can be set on the surface of the outer shell 101 to keep the blood in the outer shell 101 warm; it should be noted that the detectors required for blood gas analysis can be increased according to actual conditions.

[0028] In this embodiment, a No. 3 liquid pump 131 is arranged in the shell 100, and the input end of the No. 3 liquid pump 131 is connected to a flow tube 132, and the output end of the No. 3 liquid pump 131 is connected to the liquid storage chamber 107, and the other end of the flow tube 132 extends to the outside of the shell 100. The flow tube 132 can be connected to the arterial catheter on the patient's body, and the No. 3 liquid pump 131 can be started as needed to draw the patient's arterial blood into the liquid storage chamber, and the blood is in contact with the pH detector 111 and the electrolyte detector 112 in turn, thereby realizing blood gas analysis of the arterial blood.

[0029] See also Figure 1 , Figure 2 and Figure 4 In some embodiments, a flushing chamber 113 is provided inside the shell 100, and a flushing branch pipe 114 is arranged inside the shell 100, one end of the flushing branch pipe 114 is connected to the connecting pipe 105, and the other end of the flushing branch pipe 114 extends to the inside of the flushing chamber 113, the flushing chamber 113, the flushing branch pipe 114 and the connecting pipe 105 are connected, and a second liquid pump 115 is arranged on the surface of the flushing branch pipe 114, and the second liquid pump 115 is electrically connected to the controller 110, the liquid storage chamber 107 has a detection section 120 and a liquid storage section 121, the pH value detector 111 and the electrolyte detector 112 are both arranged in the detection section 120, and a liquid inlet pipe 116 is arranged inside the shell 100, one end of the liquid inlet pipe 116 is connected to the flushing chamber 113, and the other end of the liquid inlet pipe 116 extends to the outside of the shell 100, and a valve 117 is arranged on the surface of the liquid inlet pipe 116 and located outside the shell 100.

[0030] In this embodiment, after the blood gas analysis is completed, the first solenoid valve 108 and the No. 1 liquid pump 109 are in a stopped working state. At this time, the No. 2 liquid pump 115 and the No. 1 liquid pump 109 are started to allow the flushing liquid in the flushing chamber 113 to flow through the flushing branch pipe 114, the connecting pipe 105, and the blood gas branch pipe 106 in sequence and flow into the liquid storage chamber 107 to flush the blood in the detection section 120 to ensure the detection accuracy during the subsequent blood gas analysis. The flushing liquid in the detection section 120 will also slide into the liquid storage section 121 under the action of gravity. At the same time, a heating device can be set according to actual conditions to heat the detection section 120 to dry the flushing liquid attached to the inner wall of the detection section 120. The flushing liquid can be injected into the flushing chamber 113 through the liquid inlet pipe 116, and the circulation of the liquid inlet pipe 116 can be controlled by the valve 117.

[0031] See also Figure 1 , Figure 2 and Figure 4In some embodiments, a drain pipe 118 is disposed inside the housing 100. The number of the drain pipes 118 is two, one of which is connected to the inside of the liquid storage chamber 107, and one of which is connected to the inside of the flushing chamber 113. The bottoms of the two drain pipes 118 extend to the outside of the housing 100. A second solenoid valve 119 is disposed on the surface of the drain pipe 118 and located inside the housing 100. The two second solenoid valves 119 are electrically connected to the controller 110. A liquid level sensor 122 is disposed inside the housing 100. The number of the liquid level sensors 122 is two, one of which is used to monitor the liquid level in the flushing chamber 113, and one of which is used to monitor the liquid level in the flushing chamber 113. 22 is used to monitor the liquid level of the liquid storage section 121. Both liquid level sensors 122 are electrically connected to the controller 110. A timer 124 is arranged inside the shell 100, and the timer 124 is electrically connected to the controller 110. A display screen 125 is arranged on the front of the shell 100, and the display screen 125 is electrically connected to the controller 110. A battery 126 is arranged inside the shell 100, and the battery 126 is used to power the No. 1 solenoid valve, the No. 2 solenoid valve 119, the No. 3 solenoid valve 123, the No. 1 liquid pump 109, the No. 2 liquid pump 115, the timer 124, the liquid level sensor 122, the display screen 125, the pH value detector 111 and the electrolyte detector 112. A charging hole 127 is opened on one side of the shell 100.

[0032] In this embodiment, two liquid level sensors 122 monitor the liquid levels in the flushing chamber 113 and the liquid storage section 121 respectively. When the liquid level in the flushing chamber 113 is lower than the set threshold, the display screen 125 prompts the medical staff to inject flushing liquid into the flushing chamber 113, and when the liquid level in the liquid storage section 121 is higher than the set threshold, the display screen 125 prompts the medical staff to discharge the waste liquid in the liquid storage section 121; when it is necessary to drain the flushing chamber 113 or the liquid storage chamber 107, the second solenoid valve on the drainage pipe 118 connected to the flushing chamber 113 or the liquid storage chamber 107 is controlled respectively, so that the drainage pipe 118 is in the The working time and working interval of the first solenoid valve 108 and the first liquid pump 109 can be controlled by the timer 124, so as to realize the effect of timed blood gas analysis. At the same time, the working time and working interval of the first liquid pump 109 and the second liquid pump 115 can be controlled to flush the blood in the detection section 120 to ensure that the flushing is within the blood gas analysis interval. At the same time, since the flow rates of the second liquid pump 115 and the third liquid pump 131 are fixed, the working time of the second liquid pump 115 and the third liquid pump 131 can be set by the timer 124 to realize blood pumping. The amount of blood drawn can be controlled so that the amount of blood drawn at a time is within a controllable range; the display screen 125 can provide feedback on the blood gas analysis results and the liquid level, and can also display a blood gas analysis result comparison table. Medical staff can compare the blood gas analysis results with the blood gas analysis result comparison table, and then adjust the blood filtration replacement fluid ratio in a targeted manner to meet the patient's normal blood filtration requirements; the battery 126 can control the controller 110, the No. 1 solenoid valve, the No. 2 solenoid valve 119, the No. 3 solenoid valve 123, the No. 1 liquid pump 109, the No. 2 liquid pump 115, the No. 3 liquid pump 131, the timer 124, the liquid level sensor 122, the display screen 1 25. The electrical structures such as the pH detector 111 and the electrolyte detector 112 are powered, and the charging port 127 can charge the battery 126; it also includes a terminal, the terminal includes a display and a wireless communicator, the display and the wireless communicator are electrically connected, the wireless communicator and the controller 110 are communicatively connected, and the relevant data obtained by the controller 110, such as the liquid level, blood gas analysis results, etc., are transmitted to the wireless communicator, and finally displayed on the display to achieve the effect of remote monitoring, wherein the terminal can be a mobile phone, a tablet, a computer, etc., and the communication connection adopts 4G, 5G, Wi-Fi, a local area network, Bluetooth, etc.

[0033] It should be noted that in the present disclosure, the specific models and specifications of the liquid pump No. 3 131, the heating wire, the heating structure, the solenoid valve No. 1, the solenoid valve No. 2 119, the solenoid valve No. 3 123, the liquid pump No. 1 109, the liquid pump No. 2 115, the timer 124, the liquid level sensor 122, the display screen 125, the pH detector 111, the electrolyte detector 112, the wireless communicator and the display need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail; its power supply and principle are clear to those skilled in the art, and will not be described in detail here; the connection and installation of its various parts and the signal transmission principle belong to the well-known technology in the field.

[0034] See also Figure 1 and Figure 3 In some embodiments, a replacement inner shell 128 is also included, and a filter limiter is arranged on the surface of the replacement inner shell 128. An abutment plate 129 is arranged on one side of the replacement inner shell 128, and one side of the abutment plate 129 can be detachably connected to one side of the shell 100, and a handle 130 is arranged on the other side of the abutment plate 129.

[0035] In this embodiment, when the filter fiber 102 needs to be replaced, the replacement inner shell 128 can be directly replaced, wherein the abutment plate 129 and the shell 100 are detachably connected via a bolt structure, that is, after removing the bolts, directly pull the handle 130 through the abutment plate 129 to pull out the replacement inner shell 128 and the filter fiber 102 arranged inside, and then take out the new replacement inner shell 128 and reversely operate the above structure.

[0036] Specifically, the working principle of a blood filtration device with blood gas analysis function provided by the present application is: The blood filtration device is pushed to a suitable position, and the corresponding pipelines are connected to the blood inlet 103 and the blood outlet 104 respectively, and the pipelines are fixed to the corresponding positions of the patient, and then the No. 3 electromagnetic valve 123 is started to make the blood inlet 103 and the blood outlet 104 in a flow state, and the blood flows through the blood inlet 103, the inner cavity of the housing 101 and the blood outlet 104 in sequence. When the blood flows through the inner cavity of the housing 101, the filtering effect of the filter fiber 102 is achieved to achieve a blood filtration effect; The first solenoid valve 108 and the first liquid pump 109 are started regularly by the timer 124 or automatically according to actual needs, so that part of the blood flows through the connecting tube 105 and the blood gas branch tube 106 to the liquid storage chamber 107 in sequence. After passing through the blood gas branch tube 106, the blood will contact the pH value detector 111 and the electrolyte detector 112 in sequence, so as to perform blood gas analysis on the blood; The No. 2 liquid pump 115 and the No. 1 liquid pump 109 are started regularly by the timer 124 to allow the flushing liquid in the flushing chamber 113 to flow through the flushing branch pipe 114, the connecting pipe 105, and the blood gas branch pipe 106 in sequence and flow into the liquid storage chamber 107 to flush the blood in the detection section 120 to ensure the detection accuracy during the subsequent blood gas analysis.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A blood filtration device with blood gas analysis function, characterized in that: It includes a shell, an outer shell is arranged inside the shell, a filter fiber is arranged inside the outer shell, an inlet blood vessel and an outlet blood vessel are arranged on the front of the shell, one end of the inlet blood vessel and the outlet blood vessel are both connected with the inner cavity of the shell, and the other ends of the inlet blood vessel and the outlet blood vessel extend to the outside of the shell, a connecting tube and a blood and gas branch tube are arranged inside the shell, one end of the connecting tube is connected to the surface of the inlet blood vessel, and the other end of the connecting tube is connected to one end of the blood and gas branch tube, a liquid storage chamber is arranged inside the shell, and the other end of the blood and gas branch tube extends to the inside of the liquid storage chamber, the liquid storage chamber, the blood and gas branch tube, the connecting tube and the inlet blood vessel are connected in sequence, a first solenoid valve is arranged on the surface of the connecting tube, and a No. 1 liquid pump is arranged on the surface of the blood and gas branch tube, a controller is arranged inside the shell, a pH value detector and an electrolyte detector are arranged inside the liquid storage chamber, and the pH value detector, the electrolyte detector, the first solenoid valve and the No. 1 liquid pump are all electrically connected to the controller.

2. A blood filtration device with blood gas analysis function according to claim 1, characterized in that: A flushing cavity is provided inside the shell, a flushing branch pipe is provided inside the shell, one end of the flushing branch pipe is connected to the connecting pipe, the other end of the flushing branch pipe extends to the inside of the flushing cavity, the flushing cavity, the flushing branch pipe and the connecting pipe are communicated, a No. 2 liquid pump is provided on the surface of the flushing branch pipe, the No. 2 liquid pump is electrically connected to the controller, a liquid inlet pipe is provided inside the shell, one end of the liquid inlet pipe is communicated with the flushing cavity, the other end of the liquid inlet pipe extends to the outside of the shell, and a valve is provided on the surface of the liquid inlet pipe and outside the shell.

3. A blood filtration device with blood gas analysis function according to claim 2, characterized in that: A drain pipe is arranged inside the shell, and there are two drain pipes, one of which is connected to the inside of the liquid storage chamber, and one of which is connected to the inside of the flushing chamber. The bottoms of the two drain pipes extend to the outside of the shell, and a No. 2 solenoid valve is arranged on the surface of the drain pipe and located inside the shell. The two No. 2 solenoid valves are electrically connected to the controller.

4. A blood filtration device with blood gas analysis function according to claim 3, characterized in that: The liquid storage chamber comprises a detection section and a liquid storage section, and the pH value detector and the electrolyte detector are both arranged in the detection section.

5. A blood filtration device with blood gas analysis function according to claim 4, characterized in that: A liquid level sensor is arranged inside the shell, and the number of the liquid level sensors is two. One of the liquid level sensors is used to monitor the liquid level in the flushing cavity, and one of the liquid level sensors is used to monitor the liquid level in the liquid storage section. Both of the liquid level sensors are electrically connected to the controller.

6. A blood filtration device with blood gas analysis function according to claim 5, characterized in that: A No. 3 solenoid valve is disposed on the surface of the blood inlet and the blood outlet, and the No. 3 solenoid valve is electrically connected to the controller.

7. A blood filtration device with blood gas analysis function according to claim 6, characterized in that: A timer is arranged inside the housing and is electrically connected to the controller.

8. The blood filtration device with blood gas analysis function according to claim 7, characterized in that: A display screen is arranged on the front of the shell, and the display screen is electrically connected to the controller.

9. A blood filtration device with blood gas analysis function according to claim 8, characterized in that: A battery is arranged inside the shell, and the battery is used to power the controller, the No. 1 solenoid valve, the No. 2 solenoid valve, the No. 3 solenoid valve, the No. 1 liquid pump, the No. 2 liquid pump, the timer, the liquid level sensor, the display screen, the pH value detector and the electrolyte detector. A charging hole is opened on one side of the shell.

10. The blood filtration device with blood gas analysis function according to claim 1, characterized in that: It also includes a replaceable inner shell, the filter limiter is arranged on the surface of the replaceable inner shell, an abutment plate is arranged on one side of the replaceable inner shell, one side of the abutment plate can be detachably connected to one side of the shell, and a handle is arranged on the other side of the abutment plate.

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