Oxygen controller and automation control system

Abstract

The present application relates to a kind of oxygen controller and automatic control device, including continuity blood purification filter and oxygen controller, continuity blood purification filter and oxygen control device are communicated by pipeline between, oxygen controller includes pressure regulating device and oxygen input device, and realizes the automatic monitoring liquid level in oxygen control its ware by automatic control device.The present application provides oxygen for patient by means other than lung, and the damage to patient's body is less, the economic burden of patient is small, and medical staff is easy to operate.

Description

Technical Field

[0001] This invention relates to a medical device, specifically an oxygen controller and an oxygen delivery system. Background Technology

[0002] The human body absorbs oxygen from the air through the lungs. Once the lungs malfunction, a person may experience hypoxia. There are many such patients in clinical practice. Common symptoms can be resolved by oxygen inhalation, but in many cases, even oxygen inhalation cannot solve the patient's hypoxia problem. In fact, high concentrations of oxygen inhalation may even worsen lung damage. Therefore, there is an urgent clinical need for a solution for oxygen inhalation for patients with severe lung injury.

[0003] Currently, ECMO (extracorporeal membrane oxygenation) is a clinical solution. However, ECMO treatment causes significant damage to the patient's body, is extremely difficult to operate, very expensive, and extremely challenging to manage. Therefore, it is only used clinically when the patient's lung damage is so severe that it is absolutely necessary. Some families have to give up treatment due to financial reasons. Thus, this treatment not only causes great suffering for the patient but also poses a significant challenge to the patient's family and medical staff.

[0004] In fact, from the initial stage of lung injury when regular oxygen therapy (oxygen concentration <50%) fails to improve the patient's condition until ECMO becomes necessary, the patient's condition progresses step by step. During this process, the patient suffers immense pain because when regular oxygen therapy fails to meet the body's oxygen requirements, the concentration of oxygen inhaled into the lungs must be increased to allow the undamaged lung tissue to absorb more oxygen. However, high concentrations of oxygen can damage lung tissue; the higher the inhaled oxygen concentration exceeds 50%, the greater the damage to the lungs. As the lungs become further damaged, the absorbed oxygen is insufficient to meet the body's needs, necessitating an even greater increase in the inhaled oxygen concentration. Thus, the patient enters a vicious cycle, until finally, when even extremely high concentrations (100% oxygen) are insufficient to meet the body's requirements, ECMO treatment is considered.

[0005] Therefore, there is an urgent need for a method that can provide oxygen to patients outside the lungs in the early stages when ordinary oxygen inhalation cannot improve hypoxia. This method is less harmful to the patient's body, less economically burdensome, and easy for medical staff to operate. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an oxygen delivery system. The basic principle involves drawing blood from a patient's vena cava, passing the blood through a semi-permeable membrane in a continuous blood purification filter, and simultaneously delivering oxygen to the membrane via an oxygen controller. The oxygen diffuses through the membrane into the flowing blood within the filter, while carbon dioxide in the blood diffuses outside the membrane, thus achieving gas exchange in the blood. Finally, the gas-exchanged blood is returned to the patient, thus providing the patient with extracorporeal oxygen.

[0007] An oxygen controller includes an oxygen input device, a pressure regulating device, and a liquid level sensing device for sensing changes in the liquid level within the oxygen controller cavity. The pressure regulating device is positioned above the cavity, and a through hole is provided between the pressure regulating device and the cavity. A pressure-applying block of the pressure regulating device is located on the through hole, and a force-applying element is connected to the pressure-applying block. The oxygen input device is connected to the outside world through an oxygen delivery pipe, and the oxygen input device also includes an oxygen delivery pipe opening and closing element.

[0008] Furthermore, the force-applying element is a spring, and the pressure regulating device also includes a rotating head, with the upper end of the spring connected to the rotating head and the lower end of the spring connected to the pressure block.

[0009] Furthermore, the rotating head is connected to the rotary pump.

[0010] Furthermore, the liquid level sensing device is a buoyancy adjustment device, which includes a float and a support rod. The float is mounted on the lower part of the support rod, and each end of the support rod is provided with a rubber head.

[0011] Furthermore, the liquid level sensing device is a liquid level sensor installed outside the cavity, and the cavity is transparent or semi-transparent.

[0012] Furthermore, it also includes a signal receiver, a command center, and control lines. The liquid level sensor is connected to the signal receiver through the control lines. The liquid level sensor converts the value of the liquid level fluctuation into an electrical signal and transmits it to the signal receiver through the lines. The signal receiver then transmits the signal to the command center, which then issues commands to the rotary pump.

[0013] Furthermore, the oxygen input device includes an oxygen output pipe, a switch rod, a switch, and an oxygen input pipe. One end of the switch rod is connected to a buoyancy adjustment device, and the other end is connected to the switch.

[0014] Furthermore, the oxygen input device includes an oxygen delivery pipe and an oxygen delivery pipe clamp. The oxygen delivery pipe is connected to the pipeline, and the oxygen delivery pipe clamp is connected to the command center via a control line.

[0015] The present invention also provides an automated control system for an oxygen controller, characterized in that it includes a command center and a signal receiver. The command center is connected to the rotary pump of the pressure regulating device and the gas clamp on the ventilation pipeline via control lines. The signal receiver is connected to the liquid level sensing device via control lines. The command center and the signal receiver are connected via control lines.

[0016] Furthermore, the oxygen controller includes an oxygen input device, a pressure regulating device, and a liquid level sensing device for sensing changes in the liquid level within the oxygen controller cavity. The pressure regulating device is positioned above the cavity, and a through hole is provided between the pressure regulating device and the cavity. The pressure applying block of the pressure regulating device is located on the through hole, and a force applying element is connected to the pressure applying block. The oxygen input device is connected to the outside world through an oxygen delivery pipe, and the oxygen input device also includes an oxygen delivery pipe opening and closing element.

[0017] The present invention also provides an oxygen delivery system, including a continuous blood purification filter and an oxygen controller as described in the present invention, wherein the continuous blood purification filter and the oxygen controller are interconnected by pipelines.

[0018] Furthermore, the continuous blood purification filter includes a housing and a semi-permeable membrane disposed within the housing. The semi-permeable membrane divides the filter into two spaces: an inner space and an outer space. An inlet pipe and an outlet pipe are respectively provided at the upper and lower ends of the housing, and the inlet pipe and the outlet pipe are respectively connected to the inner space of the membrane. The patient's blood enters the inner space of the blood purification filter through the inlet pipe of the filter, undergoes dialysis within the membrane, and then exits the filter through the outlet pipe and flows back into the patient's body.

[0019] Beneficial Effects: The oxygen delivery system described in this invention delivers oxygen to patients through a continuous blood recirculation (CRRT) filter combined with an oxygen controller. This system effectively provides oxygen to patients outside the lungs with minimal harm to the patient's body, lower economic burden, and simple operation for medical staff. ECMO requires two large tubing implanted in the patient, while this invention, utilizing CRRT, only requires one tubing. This invention begins operation when the patient's inhaled oxygen concentration exceeds 50%, which is beneficial for the patient, as inhaling high concentrations of oxygen can damage the lungs.

[0020] Instruction manual illustrations

[0021] Figure 1 This is a schematic diagram of the first type of oxygen input device.

[0022] Figure 2 This is a schematic diagram of the internal structure of the oxygen input device.

[0023] Figure 3 This is a schematic diagram of the second type of oxygen input device.

[0024] Specific Implementation Cases

[0025] The following is a brief description with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 The oxygen delivery system shown includes a continuous blood purification filter and an oxygen controller. The continuous blood purification filter and the oxygen controller are interconnected via pipes 4 and 8.

[0027] The continuous blood purification filter is a common hemodialysis machine or CRRT filter, including a housing 32, and semi-permeable membranes 34 and 41 disposed within the housing. The semi-permeable membranes divide the filter into two spaces: an inner membrane space 33 and an outer membrane space 42. An inlet pipe 31 and an outlet pipe 35 are respectively located at the upper and lower ends of the housing, and the inlet and outlet pipes are connected to the inner membrane space 33. The patient's blood enters the inner membrane space 33 of the blood purification filter through the inlet pipe 31, undergoes dialysis within the inner membrane space 33 via membranes 34 and 41, and then exits the filter through the outlet pipe 35, flowing back into the patient's body. The membranes 34 and 41 are semi-permeable membranes; for example, the semi-permeable membranes are selected from common hemodialysis membranes. These semi-permeable membranes only allow small molecules such as gases, water, inorganic salts, and inflammatory mediators to pass through. Therefore, blood cells and large molecules cannot permeate through the semi-permeable membranes 34 and 41 to the outer membrane space 42, while carbon dioxide in the blood can diffuse to the outer membrane space, and similarly, oxygen from the outer membrane can diffuse to the inner membrane space and combine with red blood cells, thus completing gas exchange. Connection ports are provided at the upper and lower parts of the outer casing sidewall, and the connection ports are respectively connected to pipes 4 and 8.

[0028] The oxygen controller includes a pressure regulating device, a buoyancy regulating device, and an oxygen input device, all housed within a housing 26 (5 shown in the figure is also a housing, identical to housing 26). The pressure regulating device and the buoyancy regulating device are vertically installed within the housing 26 from top to bottom. The buoyancy regulating device is movably connected to the switch lever 10 of the oxygen input device. Figure 1 As shown, the switch lever 10 is connected to the clamp 13 at the lower end of the buoyancy adjustment device. The oxygen controller is connected to the continuous blood purification filter via pipes 4 and 8.

[0029] When a continuous blood purification filter is working, there is a high positive pressure inside the membrane, causing water in the blood to permeate to the outside. Therefore, it is necessary to ensure not only a certain amount of oxygen space outside the membrane but also a corresponding pressure, which is achieved by a pressure regulating device. The pressure regulating device includes a rotating head 1 and a pressure head 3 housed within the housing, with a spring 2 installed between the rotating head 1 and the pressure head 3. The housing includes an air vent 22 communicating with the outside and a control air vent 23 communicating with a buoyancy regulating device. The rotating head 1 is adjustablely mounted on the top wall of the housing 26, meaning it can be moved up and down to adjust the pressure level between the rotating head and the pressure head. The mounting methods of the rotating head 1 on the housing include, but are not limited to, threaded engagement and push-pull engagement. The rotation head 1 controls the extension and retraction of the spring 2, thereby changing the gas pressure outside the filter membrane 42 that pushes the pressure head 3 upward through the control air vent 23. For example, when the rotating head is rotated upwards more, the pressure on the spring between the rotating head 1 and the pressure head 3 will be less, thus reducing the pressure of the gas outside the filter membrane 42 that pushes the pressure head 3 upwards through the control vent 23. Conversely, when the rotating head is rotated downwards more, the pressure on the spring between the rotating head 1 and the pressure head 3 will be greater, thus increasing the pressure of the gas outside the filter membrane 42 that pushes the pressure head 3 upwards through the control vent 23.

[0030] If the pressure outside the membrane 42 is too high and cannot be expelled from the system in time, a large amount of gas will be forced into the membrane 33 and enter the body with the blood, causing air embolism. Therefore, the pressure outside the membrane 42 must be maintained within a certain pressure range.

[0031] The user can adjust the pressure threshold of the pressure regulating device by adjusting the deformation of the spring. The pressure threshold corresponds to the pressure maintained outside the membrane 42. When the gas pressure outside the membrane 42 of the filter exceeds the preset pressure threshold, the gas in the oxygen delivery system can push open the pressure head 3, and the oxygen in the oxygen delivery system enters the pressure regulating device through the control vent 23 and is discharged outside the oxygen delivery system through the exhaust vent 22 of the pressure regulating device.

[0032] The buoyancy adjustment device is installed inside the buoyancy control device cavity 6, including a support rod 25 inside the housing. Each end of the support rod is provided with a rubber head 24 and 29. A float 7 is installed on the support rod 25, preferably the float is installed at the lower part of the support rod.

[0033] The buoyancy adjustment device is located below the control port 23 of the pressure adjustment device. The lower end of the buoyancy adjustment device support rod 25 is connected to one end of the switch rod 10 of the oxygen input device.

[0034] The oxygen controller also has a waste liquid outlet. In a preferred design, the bottom of the housing 26, opposite the control vent 23, has a waste liquid outlet 28. The waste liquid outlet can discharge liquid from the housing 26 as needed.

[0035] The oxygen input device includes an oxygen output pipe 9, a switch lever 10, a switch 11, and an oxygen input pipe 12. For example... Figure 2 The oxygen input device shown includes an outer shell 1001 and an inner shell 1002. The inner shell is slidably connected within the outer shell and has an oxygen channel 61. Oxygen pipes 9 and 12 are connected to the outer shell. An oxygen channel 62 on the inner wall of the outer shell corresponds to the oxygen channel on the inner shell. 10 is a lever, also called a switch lever. When the lever rotates, it causes the inner shell 1002 to rotate within the outer shell, opening or closing the gas passage formed between the oxygen output pipe 9, oxygen channel 62, oxygen channel 61, and oxygen input pipe 12. The outer shell 1001 is mounted on the outer shell of the oxygen supply device's housing 26, and the outer shell matches the inner shell. A sealing gasket is placed between the outer shell and the inner shell to ensure airtightness. The other end of the switch lever 10 is connected to a buoyancy adjustment device.

[0036] Medical staff cannot be present at all times during their work, so a buoyancy adjustment device is installed in the oxygen controller to ensure patient safety. During operation, the pressure inside membrane 33 changes with the patient's position, blood viscosity, and the amount of blood clots. Therefore, various problems may occur during extracorporeal oxygen delivery, causing the pressure inside membrane 33 of the continuous blood purification filter to rise or fall. Changes in membrane pressure can disrupt the original pressure difference between membranes 34 and 41. If the filter continues to operate in its original state under these circumstances, problems may arise. Human intervention is required to maintain a balanced pressure between membranes 34 and 41.

[0037] When the pressure inside membrane 33 increases, the liquid inside membrane 33 will transfer to outside membrane 42, causing the liquid level outside membrane 42 to rise. The increased liquid outside membrane 42 enters the oxygen control device through conduit 8, further causing the liquid level inside oxygen controller 26 to rise. As the liquid level inside oxygen controller 26 rises, the buoyancy adjustment device inside oxygen controller 26 rises accordingly. When the buoyancy adjustment device rises to the point where the rubber head 24 blocks the control air hole 23, it will drive the lever 10, which is movably connected to the buoyancy adjustment device. As the lever 10 rotates, it will close the gas switch 11. After the gas switch 11 is closed, oxygen cannot enter from the gas inlet pipe and the oxygen outlet pipe, nor can it exit from the filter. Thus, the amount of liquid flowing from inside membrane 33 into outside membrane 42 is limited, and the internal space outside membrane 42 is occupied by the existing liquid and gas.

[0038] When the above situation occurs, medical staff need to adjust the oxygen controller to make it work again. First, the rotating head 1 should be rotated to compress the spring, thereby increasing the pressure of the pressure head 3 on the control port 23, generally by 3 to 5 mmHg. The pressure change can also be measured by the waste hydraulic probe 27. After the pressure is adjusted, the arm lever 10 is rotated to open the gas switch 11, which also moves the buoyancy adjustment device downward, thereby driving the rubber head 24 away from the control port 23. As gas gradually enters the membrane 42, because the pressure of the pressure head 3 on the control port 23 is greater than the pressure on the membrane 42, the liquid on the membrane 42 will gradually transfer to the membrane 33, thereby causing the liquid level in the oxygen controller 26 to drop. When the liquid level drops to the required level, medical staff can judge the pressure of the pressure head 3 on the control port 23 by observing the liquid level in the oxygen controller 26, and then adjust the pressure of the pressure head 3 on the control port 23 to be the same as the pressure on the membrane 42, restarting the continuous blood purification filter to start working again.

[0039] When the pressure inside membrane 33 is too low, the liquid inside membrane 42 will transfer to inside membrane 33. At this time, the liquid level inside the oxygen controller housing 26 will drop, causing the buoyancy adjustment device to also drop. During the descent, the buoyancy adjustment device will drive the lever 10 to rotate downwards, thereby closing the gas switch 11. Since the oxygen is closed, no gas enters, and therefore no gas needs to be expelled. As a result, due to the downward elastic force of spring 2, pressure head 3 will block the control vent 23, making membrane 42 and the oxygen controller a sealed space. Liquid outside membrane 42 cannot continue to enter the membrane, and even if it does, it will not continue to enter, thus preventing a large amount of gas from entering the blood system. Experiments have shown that if a large amount of gas enters the membrane at the upper end of the filter, as long as there is some liquid at the lower end of the filter, the gas will be squeezed out by the liquid at the lower end. Therefore, when there is liquid at the lower end of the filter, a large amount of gas will not enter the blood system and enter the patient's body, thus ensuring the patient's safety.

[0040] At this point, medical personnel need to continue adjusting the oxygen controller. First, adjust the pressure of pressure head 3 against the control port 23 by rotating the rotating head 1 to reduce the compression of spring 2, thereby reducing the pressure of pressure head 3 against the control port 23. This pressure is 3 to 5 mmHg lower than the pressure measured by the waste hydraulic probe 27. At this time, the pressure outside the membrane 42 is less than the pressure inside the membrane 33, so the liquid inside the membrane 33 will flow to the outside membrane 42. This causes the liquid level outside the membrane 42 to rise, and the liquid level inside the oxygen controller housing 26 will also rise, causing the buoyancy adjustment device to rise. This, through the lever 10, drives the switch 11 to open the gas passage 9. When the oxygen controller reaches the required level, adjust the pressure of pressure head 3 against the gas port 23 to be the same as the pressure outside the membrane 42. At this point, the liquid level will no longer change, and the system can continue to operate.

[0041] Experiments have shown that if a large amount of gas enters the membrane from the upper end of the filter, as long as there is some liquid at the lower end of the filter, the gas will be squeezed out by the liquid at the lower end when it flows to the lower end of the filter because the gas is lighter than the liquid. Therefore, when there is liquid at the lower end of the filter, a large amount of gas will not enter the blood system and reach the patient's body, ensuring the patient's safety.

[0042] When treating patients, all adjustments are based on the presence of blood flow in membrane 33. If the blood flow in membrane 33 stops at the same time, the blood flow in the membrane should be restored before adjusting the oxygen controller. All probes on the device are the same as those on CRRT machines or hemodialysis machines.

[0043] Since membranes 34 and 41 have a limited lifespan, which is reflected in the pressure difference between the inside of the membrane 33 and the outside of the membrane 42, known as transmembrane pressure, an excessively high transmembrane pressure will shorten the lifespan. Therefore, a pressure probe 27 can be installed on the oxygen controller, which can be connected to the waste pressure probe of the CRRT machine. This way, when the machine measures the pressure at the front end 31 and the rear end 35 of the filter, it can also calculate the transmembrane pressure. Similar to blood purification, the machine can then determine whether to shut down the blood pump based on the transmembrane pressure to ensure safety. We can also use the transmembrane pressure to decide whether to replace the filter to maintain its effectiveness.

[0044] The buoyancy and gravity of the float 7 moving up and down must be sufficient to drive the switch rod 10. The switch 11 fits into the oxygen controller housing 26 to ensure the airtightness of the oxygen controller. When needed, the switch 11 can be adjusted via the switch rod 10, thereby adjusting the buoyancy adjustment device.

[0045] Figure 3 What is shown is Figure 1 Another design of the oxygen delivery system shown adds automatic control components. Figure 3 The oxygen delivery system shown includes a continuous blood purification filter and an oxygen controller.

[0046] The continuous blood purification filter and the oxygen control device are interconnected via pipes 104 and 108.

[0047] The continuous blood purification filter is a common hemodialysis machine or CRRT filter, including a filter body 107, a filter housing, and a semi-permeable membrane disposed within the housing. The semi-permeable membrane divides the filter into two spaces: an inner space and an outer space. The upper end of the housing is the arterial end, with an arterial inlet tube 105, and the lower end of the housing is the venous end, with a venous outlet tube 110. The inlet and outlet tubes are respectively connected to the inner space of the membrane. The patient's blood enters the inner space of the blood purification filter through the inlet tube, undergoes dialysis within the membrane, and then exits the filter through the outlet tube, flowing back into the patient's body. A pre-filter pressure probe 106 is located at the upper end of the filter; in this embodiment, the pre-filter pressure probe 106 is installed on the arterial inlet tube 105. A venous probe 109 is located at the lower end of the filter; in this embodiment, the venous probe 109 is installed on the venous outlet tube 110.

[0048] The oxygen controller includes a pressure regulating device, a buoyancy regulating device, an oxygen input device, and a control system.

[0049] The pressure regulating device includes a rotary pump 100 and a rotary pump head 101 connected to the rotary pump. The rotary pump head is connected to the elastic device housing 102, and the rotary pump head 101 and the pressure head 122 are connected to each other by a spring 114. The rotary pump 100 is connected to the command center 124 via a control line 123. The elastic device housing 102 is also provided with a gas outlet 121.

[0050] The pressure regulating device and the buoyancy regulating device are vertically connected, and a vent pipe is provided between them. A gas clamp 103 is installed on the vent pipe. The gas clamp 103 is connected to the command center 124 via a control line 126.

[0051] The buoyancy adjustment device includes a cavity 200 and a liquid level sensor 127 disposed on the cavity. The liquid level sensor 127 is connected to a signal receiver 128 via a control line 129. The cavity 200 is connected to a filter via pipes 104 and 108.

[0052] The lower end of the buoyancy regulating device cavity 200 is also equipped with a waste liquid end probe 131 and a waste liquid outlet 113, both of which extend from the housing 130 of the cavity 200. The oxygen input device includes an oxygen supply pipe 112 and an oxygen supply pipe clamp 111. The oxygen supply pipe 112 is connected to the pipeline 108. The oxygen supply pipe clamp 111 is connected to the command center 124 via control line 132.

[0053] The command center 124 and the signal receiver 128 are connected by a control line.

[0054] If the pressure inside filter 107 changes, the liquid level inside oxygen controller 130 will change accordingly. When the pressure inside oxygen controller 130 changes, the external liquid level sensor 127 will detect whether the liquid level rises or falls. The working principle of the liquid level sensor is based on the different speeds of ultrasound propagation in water and air, or the refraction of light in water and air. The value of the liquid level fluctuation is converted into an electrical signal and transmitted to signal receiver 128 through line 129. Signal receiver 128 then transmits the signal to command center 124, which issues commands to rotary pump 100, gas clamps 103 and 111 respectively. The command center sends current to the machine at the gas clamp through the line. This machine can be a clamping motor installed at the gas clamp, or it can use the principle of an electromagnet, where only when energized does it generate magnetic force to close the switch, or a Wi-Fi or Bluetooth receiver can be installed on the gas clamp. When the command center 124 receives a signal indicating a drop in the liquid level within the oxygen controller 130, it means the pressure inside the oxygen controller 130 is greater than the pressure inside the membrane of the filter 107. In this case, the command center 124 sends a command to the rotary pump 100 to rotate the rotating head 101, extending the spring and reducing the pressure exerted by the pressure head 122. This reduces the pressure inside the oxygen controller, causing the liquid level in the oxygen controller 130 to rise to the specified level, ultimately finding the equilibrium pressure across the membrane. Conversely, when the command center 124 receives a signal indicating a rise in the liquid level within the oxygen controller 130, it means the pressure inside the oxygen controller 130 is less than the pressure inside the membrane of the filter 107. In this case, the command center 124 sends a command to the rotary pump 100 to rotate the rotating head 101, compressing the spring and increasing the pressure exerted by the pressure head 122. This increases the pressure inside the oxygen controller, causing the liquid level in the oxygen controller 130 to drop to the specified level, ultimately finding the equilibrium pressure across the membrane. This intelligent device greatly reduces the tedious manual adjustment work, making it more efficient and reducing the interruption time of oxygen administration for patients.

[0055] If the liquid level in the oxygen controller becomes too high or too low during the adjustment process, and the adjustment is ineffective, the command center 124 will simultaneously issue clamping commands to both gas clamps 103 and 111 to ensure the patient's safety.

[0056] After gas clamps 103 and 111 are closed simultaneously, first check if the entire device is still usable. If it is usable, and the patient needs to continue extracorporeal oxygen therapy, then the command center should be manually adjusted. Adjustment can be done in the following two ways:

[0057] When the liquid level in the oxygen delivery controller is too low, the adjustment command center 124 sends a command to make the rotary pump 100 rotate, the rotating head 101 extends the spring, and reduces the pressure of the pressure head 122 on the gas hole below it, thereby reducing the pressure in the oxygen delivery controller. This causes the liquid inside the membrane to transfer to the outside of the membrane, which in turn causes the liquid level in the oxygen delivery controller to rise. When the liquid level reaches a certain height, the machine enters the working state, and the machine will adjust its operation according to the liquid level height we set.

[0058] When the liquid level in the oxygen delivery controller is too high, the command center 124 sends a command to the rotary pump 100 to rotate the rotating head 101, which compresses the spring 114 and increases the pressure of the pressure head 122 on the gas hole below it. Then, the command center 124 sends a command to open the gas clamps 113 and 111 simultaneously. At this time, the pressure in the oxygen delivery controller will gradually increase as oxygen or air, or a mixture of air and oxygen, is introduced into the membrane through the oxygen pipe 112. As a result, the pressure in the oxygen delivery controller will gradually exceed the pressure inside the membrane, and the liquid outside the membrane will gradually transfer into the membrane. Thus, the liquid level will gradually decrease until it reaches the level we set, at which point the machine can enter the working state. The command center will also adjust according to the liquid level.

[0059] During treatment, it is essential to ensure unobstructed blood flow within the membrane before adjusting the oxygen controller. Only on this basis can the oxygen controller be adjusted effectively.

[0060] The clinical application of the oxygen delivery system described in this invention includes the following steps: Pre-filling the continuous blood purification filter; adding physiological saline or pre-filling fluid to the oxygen controller to a certain level; and then connecting the oxygen controller to the filter. Then, adjusting the liquid level in the oxygen controller to provide oxygen therapy to the patient.

Claims

1. An oxygen delivery system, comprising an oxygen controller and a continuous blood purification filter, characterized in that, The continuous blood purification filter and the oxygen control device are interconnected via pipelines. The oxygen controller includes an oxygen input device, a pressure regulating device, and a liquid level sensing device that senses changes in the liquid level within the oxygen controller chamber. The pressure regulating device is located above the chamber, and a through hole is provided between the pressure regulating device and the chamber. The pressure applying block of the pressure regulating device is located on the through hole, and a force applying element is connected to the pressure applying block. The oxygen input device is connected to the outside via an oxygen delivery tube and also includes an oxygen delivery tube opening and closing element. The continuous blood purification filter includes a shell and a semi-permeable membrane disposed within the shell. The semi-permeable membrane divides the filter into two spaces: an inner space and an outer space. The upper and lower ends of the shell are respectively provided with an input tube and an output tube, which are respectively connected to the inner space of the membrane. The patient's blood enters the membrane of the blood purification filter through the input tube, undergoes dialysis within the semi-permeable membrane, and then exits the filter through the output tube and flows back into the patient's body.

2. The oxygen delivery system according to claim 1, characterized in that, The force-applying element is a spring, and the pressure regulating device also includes a rotating head, with the upper end of the spring connected to the rotating head and the lower end of the spring connected to the pressure block.

3. The oxygen delivery system according to claim 2, characterized in that, The rotating head is connected to the rotary pump.

4. The oxygen delivery system according to claim 1, characterized in that, The liquid level sensing device is a buoyancy adjustment device, which includes a float and a support rod. The float is installed at the lower part of the support rod, and each end of the support rod is provided with a rubber head.

5. The oxygen delivery system according to claim 1, characterized in that, The oxygen input device includes an oxygen output pipe, a switch rod, a switch, and an oxygen input pipe. One end of the switch rod is connected to a buoyancy adjustment device, and the other end is connected to the switch.

6. An automated control system for an oxygen delivery system, characterized in that, The system includes the oxygen delivery system of claim 1, wherein the automated control system comprises a command center and a signal receiver. The command center is connected to the rotary pump of the pressure regulating device and the gas clamp on the ventilation pipeline via control lines. The signal receiver is connected to the liquid level sensing device via control lines. The command center and the signal receiver are connected via control lines. The liquid level sensing device is a liquid level sensor installed outside the cavity. The cavity is transparent or semi-transparent. The liquid level sensor is connected to the signal receiver via control lines. The liquid level sensor converts the value of liquid level fluctuations into an electrical signal and transmits it to the signal receiver via the lines. The signal receiver then transmits the signal to the command center. The command center issues commands to the rotary pump and the oxygen delivery clamp respectively. The oxygen input device includes an oxygen delivery pipe and an oxygen delivery clamp. The oxygen delivery pipe is connected to the pipeline, and the oxygen delivery clamp is connected to the command center via control lines.

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