Blood purification system and use method

Abstract

The invention discloses a blood purification system and a using method, and relates to the technical field of medical instruments.The blood purification system comprises at least two independent cavities formed in a venous kettle, a blood pipeline assembly comprises a plurality of liquid inlet pipes and liquid outlet pipes, the liquid inlet pipes are all communicated with a dialyzer, the liquid outlet pipes are all communicated with a human body, and the liquid inlet pipes are communicated with the dialyzer. The pressure pipeline assembly comprises a main pressure guide pipe, at least one pressure sensor protection cover and a plurality of pressure guide pipes, one ends of the pressure guide pipes communicate with the corresponding cavities, the other ends of the pressure guide pipes communicate with the main pressure guide pipe, and the at least one pressure sensor protection cover comprises a first pressure sensor protection cover. The two ends of the first pressure sensor protection cover communicate with the main pressure catheter and the dialysis equipment correspondingly, the pipeline control assembly is used for controlling connection and disconnection of the blood pipeline assembly and the pressure pipeline assembly, the situation that blood of a patient makes contact with the outside world and is infected due to the fact that treatment consumables need to be replaced is avoided, and the safety of the patient during treatment is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a blood purification system. Furthermore, this invention also relates to a method of using the aforementioned blood purification system. Background Technology

[0002] Blood purification is an important treatment for acute and chronic kidney injury, poisoning, and other diseases. Extracorporeal circulation (ECG) tubing is an essential medical device for blood purification therapy. The venous reservoir is a crucial component of the ECG tubing, located in the venous segment. Blood purified by the filter flows through the venous reservoir before being returned to the patient. The reservoir monitors the pressure in the venous segment and intercepts microbubbles and thrombi in the blood, preventing them from entering the body and ensuring the safety of ECG therapy. Due to the continuous dehydration during ECG therapy and the venous reservoir's interception of microbubbles and thrombi, the blood in the venous reservoir can easily become concentrated or even coagulate during the up to 4 hours of ECG therapy. This concentration or coagulation reduces the flow of blood within the venous reservoir, causing the pressure to rise and rise into the pressure monitoring catheter. This rising blood contaminates the pressure sensor protective cover on the pressure monitoring catheter (the pressure sensor protective cover protects the pressure monitoring element of the dialysis equipment), making pressure monitoring impossible.

[0003] Currently, clinical treatment is based on the condition of the blood in the venous chamber. When the blood in the venous chamber is concentrated but no significant clotting has occurred, medical staff need to replace the pressure sensor protective cover. First, the clamp on the pressure monitoring catheter is closed, and the pressure sensor protective cover is removed. A syringe filled with saline is connected to the pressure monitoring catheter, and the clamp on the pressure monitoring catheter is opened. The blood in the pressure monitoring catheter is pushed back into the venous chamber using the syringe, while simultaneously diluting the blood in the venous chamber. Then, the new pressure sensor protective cover is connected to continue subsequent treatment. However, there is a risk of blood exposure leading to patient infection during the replacement of the pressure sensor protective cover. That is, the blood-filled pressure monitoring catheter is separated from the contaminated pressure sensor protective cover, and during the connection of the syringe, the extracorporeal blood is exposed to the air, increasing the risk of infection for the patient. Furthermore, if clotting occurs in the blood in the venous chamber during treatment, the patient may be forced to discontinue treatment, resulting in the patient not achieving the expected treatment effect.

[0004] In conclusion, how to reduce the risk of infection during the treatment of patients undergoing blood purification and ensure the continuity of treatment is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a blood purification system that can not only avoid infection during the treatment of blood purification patients, greatly improve the safety of the treatment process, but also ensure the continuous treatment and achieve the expected therapeutic effect.

[0006] Another object of the present invention is to provide a method of using the above-described blood purification system.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A blood purification system, comprising:

[0009] A vein pot, wherein the vein pot has at least two independent cavities, and each of the cavities is equipped with a filter device;

[0010] A blood tubing assembly includes several inlet tubes and outlet tubes respectively connected to the corresponding cavities. The inlet tubes are all connected to a dialyzer, and the outlet tubes are all connected to the human body, so that blood is sequentially passed through the dialyzer, the inlet tubes, the venous reservoir, and the outlet tubes before being returned to the human body.

[0011] A pressure pipeline assembly, comprising a main pressure conduit, at least one pressure sensor protective cover, and a plurality of pressure conduits, wherein one end of each of the plurality of pressure conduits is connected to a corresponding cavity, and the other end of each pressure conduit is connected to the main pressure conduit; the at least one pressure sensor protective cover includes a first pressure sensor protective cover, the two ends of which are connected to the main pressure conduit and the dialysis device, respectively, for protecting the pressure monitoring element of the dialysis device;

[0012] A pipeline control assembly, comprising several access control devices for controlling the on / off state of the blood pipeline assembly and the pressure pipeline assembly.

[0013] Furthermore, the venous pot is provided with two independent cavities, namely a first cavity and a second cavity;

[0014] The blood tubing assembly also includes a dialysis catheter and a venous catheter. The plurality of inlet tubes are divided into two, namely a first inlet tube and a second inlet tube. Both the first inlet tube and the second inlet tube are connected to the dialysis catheter. The first inlet tube is connected to the first cavity, and the second inlet tube is connected to the second cavity. The dialysis catheter is provided with a dialysis connector.

[0015] The plurality of outlet tubes are in pairs, namely a first outlet tube and a second outlet tube. Both the first outlet tube and the second outlet tube are connected to the venous catheter. The first outlet tube is connected to the first cavity, and the second outlet tube is connected to the second cavity.

[0016] Furthermore, the pipeline control component of the present invention includes:

[0017] A first liquid inlet control device and a second liquid inlet control device, wherein the first liquid inlet control device is installed on the first liquid inlet pipe and is used to control the opening and closing of the first liquid inlet pipe, and the second liquid inlet control device is installed on the second liquid inlet pipe and is used to control the opening and closing of the second liquid inlet pipe;

[0018] A first liquid discharge control device and a second liquid discharge control device are installed on the first liquid discharge pipe to control the opening and closing of the first liquid discharge pipe, and the second liquid discharge control device is installed on the second liquid discharge pipe to control the opening and closing of the second liquid discharge pipe.

[0019] Furthermore, the plurality of pressure conduits include a first pressure conduit and a second pressure conduit, one end of the first pressure conduit is connected to the first cavity, one end of the second pressure conduit is connected to the second cavity, and the other ends of both the first pressure conduit and the second pressure conduit are connected to the main pressure conduit.

[0020] Furthermore, the pipeline control component further includes:

[0021] A first pressure control device and a second pressure control device, wherein the first pressure control device is installed on the first pressure conduit and is used to control the opening and closing of the first pressure conduit, and the second pressure control device is installed on the second pressure conduit and is used to control the opening and closing of the second pressure conduit.

[0022] Furthermore, the at least one pressure sensor protective cover also includes a second pressure sensor protective cover, which is installed in the middle of the first pressure conduit and located between the first pressure control device and the first pressure sensor protective cover.

[0023] Furthermore, the pipeline control component further includes:

[0024] A third pressure control device is installed on the first pressure conduit and located between the first pressure sensor protective cover and the second pressure sensor protective cover, for controlling the opening and closing of the first pressure conduit.

[0025] Furthermore, the plurality of pressure conduits also include a backup pressure conduit, and the at least one pressure sensor protective cover also includes a backup pressure sensor protective cover. The backup pressure sensor protective cover is installed on the backup pressure conduit, and both ends of the backup pressure conduit are connected to the first pressure conduit and are located between the first pressure control device and the third pressure control device, so that the backup pressure sensor protective cover and the second pressure sensor protective cover are connected in parallel.

[0026] The pipeline control assembly further includes a first backup control device and a second backup control device, which are respectively installed on both sides of the backup pressure sensor protective cover and are used to control the connection and disconnection between the backup pressure conduit and the first pressure conduit.

[0027] Furthermore, the present invention also includes:

[0028] The injection catheter has one end connected to the first pressure catheter, and the connected end is located between the first pressure control device and the second pressure sensor protective cover. The other end of the injection catheter is fixedly installed with a locking connector.

[0029] The pipeline control assembly also includes a push control device for controlling the opening and closing of the push conduit.

[0030] A method of use for the aforementioned blood purification system, comprising the following steps:

[0031] System connection: Connect the dialysis catheter to the dialyzer, connect the venous catheter to the human body, and connect the first pressure sensor protective cover to the pressure monitoring port of the dialysis equipment;

[0032] Initial state check and setting: Check and ensure that the first backup control device, the second backup control device, the injection control device, the second liquid inlet control device, the second liquid outlet control device, and the second pressure control device are all in the closed state, and that the first pressure control device, the third pressure control device, the first liquid inlet control device, and the first liquid outlet control device are all in the open state;

[0033] Treatment initiation: Dialysis treatment is initiated, allowing blood to flow sequentially through the dialyzer, the dialysis catheter, and the first inlet tube into the first cavity. After being filtered by the filtration device, the blood is returned to the body through the first outlet tube and the venous catheter. Simultaneously, pressure monitoring is achieved through the first pressure catheter, the second pressure sensor protective cover, the main pressure catheter, and the first pressure sensor protective cover.

[0034] First blood flow assessment and abnormality triggering: The blood flow in the cavity is indirectly assessed by observing the blood level in the first cavity. When the blood level in the first cavity reaches the protective cover of the second pressure sensor, it is determined to be the first pressure monitoring abnormality.

[0035] Abnormal handling and tubing flushing: After shutting down the third pressure control device and the first pressure control device, and sealing the syringe containing saline solution with the locking connector, open the injection control device and the first pressure control device, push the syringe to inject saline solution into the first cavity, so that the blood remaining in the catheter flows back into the first cavity along with the saline solution, thus completing the flushing of the first pressure catheter.

[0036] Backup pressure monitoring switching: After the normal saline injection is completed, the injection control device is turned off, the third pressure control device is turned on, and the first backup control device and the second backup control device are turned on. The pressure is then switched to the backup pressure catheter and the backup pressure sensor protective cover to ensure that the dialysis treatment continues.

[0037] Second blood flow judgment and abnormality triggering: By observing the blood level in the first cavity, the blood flow in the cavity is indirectly judged. When the blood level in the first cavity reaches the protective cover of the backup pressure sensor, it is determined to be a second pressure monitoring abnormality.

[0038] Cavity switching and treatment recovery: The first inlet control device, the first pressure control device, and the first outlet control device are turned off, and the second inlet control device, the second outlet control device, and the second pressure control device are turned on, so that blood is switched to flow through the second inlet tube, the second cavity, the second outlet tube, and the venous catheter and returned to the human body. Pressure monitoring is achieved through the second pressure catheter, the main pressure catheter, and the first pressure sensor protective cover to continue dialysis treatment.

[0039] The blood purification system provided by this invention, in practice, includes at least two independent cavities within the venous chamber. The blood tubing assembly includes several inlet and outlet pipes respectively connected to the corresponding cavities. The inlet pipes are all connected to the dialyzer, and the outlet pipes are all connected to the patient, allowing blood to sequentially pass through the dialyzer, inlet pipes, venous chamber, and outlet pipes before being returned to the patient. In other words, by employing multiple independent cavities, a single venous chamber is used in conjunction with the blood tubing, and each cavity has its own filter device, achieving multiple independent blood purification pathways. The pressure tubing assembly includes a main pressure conduit, at least one pressure sensor protective cover, and several pressure conduits. One end of each pressure conduit is connected to a corresponding cavity, and the other end is connected to the main pressure conduit. The at least one pressure sensor protective cover includes a... A pressure sensor protective cover is provided, with its two ends connected to the main pressure conduit and the dialysis equipment, respectively. This cover is used to protect the pressure monitoring element of the dialysis equipment. In other words, by setting up the pressure sensor protective cover and pressure conduit, the device can have several corresponding pressure detection paths to detect the pressure of the corresponding blood purification path. The pipeline control component includes several path control devices to control the on / off state of the blood pipeline component and the pressure pipeline component. Different blood flow paths are set on the venous reservoir, and the venous reservoir is set as a double-lumen structure. When the blood in the venous reservoir becomes concentrated or coagulates, treatment can continue, avoiding the risk of infection from the patient's blood coming into contact with the outside world due to the replacement of treatment consumables. Moreover, treatment can be continued without interrupting the treatment or forcing the patient to leave the machine, thus improving the safety and effectiveness of the patient's treatment.

[0040] The present invention also provides a method of use for the above-mentioned blood purification system, which has the aforementioned beneficial effects. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the overall structure of the device provided by the present invention;

[0043] Figure 2 This is a schematic diagram of the internal structure of the vein pot provided by the present invention;

[0044] Figure 3 This is a schematic diagram of the pipeline control component structure provided by the present invention;

[0045] Figure 4 This is a schematic diagram of the pressure pipeline assembly provided by the present invention.

[0046] Figures 1-4 In the accompanying drawings, the reference numerals include:

[0047] 1. Vein pot; 101. Partition; 102. Filter device; 103. First cavity; 104. Second cavity;

[0048] 2. Blood tubing assembly; 201. First inlet tube; 202. Second inlet tube; 203. First outlet tube; 204. Second outlet tube; 205. Intravenous catheter; 206. Dialysis catheter; 207. Dialysis connector; 208. Dust cap;

[0049] 3. Pressure piping assembly; 301. First pressure conduit; 302. Second pressure conduit; 303. First pressure sensor protective cover; 304. Second pressure sensor protective cover; 305. Backup pressure conduit; 306. Backup pressure sensor protective cover; 307. Main pressure conduit;

[0050] 4. Piping control components; 401. First inlet control device; 402. Second inlet control device; 403. First outlet control device; 404. Second outlet control device; 407. First pressure control device; 406. Second pressure control device; 405. Third pressure control device; 408. First backup control device; 409. Second backup control device; 410. Injection control device;

[0051] 5. Injection catheter; 501. Locking connector. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] The core of this invention is to provide a blood purification system that can not only avoid infection during blood purification treatment, greatly improving the safety of the treatment process, but also ensure the continuous progress of treatment and achieve the expected therapeutic effect.

[0054] Another core aspect of this invention is to provide a method of using the aforementioned blood purification system.

[0055] Please refer to Figure 2A blood purification system includes a venous chamber, a blood tubing assembly 2, a pressure tubing assembly 3, and a tubing control assembly 4. The venous chamber has at least two independent cavities, each containing a filter device 102. The blood tubing assembly 2 includes several inlet and outlet tubes connected to corresponding cavities. The inlet tubes are connected to a dialyzer, and the outlet tubes are connected to the patient, allowing blood to pass sequentially through the dialyzer, inlet tubes, venous chamber, and outlet tubes before being returned to the patient. The pressure tubing assembly 3 includes a main pressure conduit 307, at least one pressure sensor protective cover, and several pressure conduits. One end of each pressure conduit is connected to a corresponding cavity, and the other end is connected to the main pressure conduit 307. The at least one pressure sensor protective cover includes a first pressure sensor protective cover 303, with both ends connected to the main pressure conduit 307 and the dialysis equipment, respectively. The tubing control assembly 4 includes several access control devices for controlling the on / off states of the blood tubing assembly 2 and the pressure tubing assembly 3.

[0056] It should be noted that, in this embodiment of the invention, the ends of the pipes connected to other devices are equipped with sealing heads or dust caps 208 when the system is stored, in order to avoid contamination during storage.

[0057] In addition, in this embodiment of the invention, the pressure sensor protective cover is a component that allows air to pass through but not water. The pressure sensor protective cover is used to connect with the pressure monitoring element of the dialysis equipment to prevent the pressure monitoring element of the dialysis equipment from being contaminated by blood.

[0058] In addition, in this embodiment of the invention, the ends of each pipeline are equipped with medical quick connectors as needed to facilitate quick connection with the required components and improve the efficiency of pre-treatment preparation.

[0059] In addition, in this embodiment of the invention, the bottle body of the vein pot 1 is provided with a partition plate 101, which divides the inside of the bottle body of the vein pot 1 into several independent cavities. At least one layer of filter screen is installed at the bottom of the cavity of the vein pot 1 to intercept the tiny air bubbles and blood clots contained in the cavity of the vein pot 1.

[0060] Optionally, in some embodiments, the multiple access control devices may be valves or medical clamps, or check valves may be used as control devices to control the opening and closing of the pipeline.

[0061] Optionally, in some embodiments, the blood tubing assembly 2 further includes several check valves installed on the blood tubing to prevent blood backflow from affecting the treatment.

[0062] Optionally, in some embodiments, a plurality of pressure catheters can be connected to the main pressure catheter 307 via a multi-port connector so that all of the pressure catheters are ultimately connected to the dialysis device.

[0063] In a specific implementation of this invention, the venous reservoir 1 has at least two independent cavities. The blood tubing assembly 2 includes several inlet and outlet pipes respectively connected to the corresponding cavities. The inlet pipes are all connected to the dialyzer, and the outlet pipes are all connected to the human body, so that blood passes sequentially through the dialyzer, inlet pipes, venous reservoir 1, and outlet pipes before being returned to the patient. In other words, by using multiple independent cavities, a single venous reservoir 1 can be coupled with the blood tubing, and each cavity has a separately configured filter device 102, achieving multiple independent blood purification pathways. The pressure tubing assembly 3 includes a main pressure conduit 307, at least one pressure sensor protective cover, and several pressure conduits. One end of each pressure conduit is connected to a corresponding cavity, and the other end is connected to the main pressure conduit 307. The at least one pressure sensor protective cover includes a first pressure sensor protective cover 303. The two ends of the protective cover 303 are connected to the main pressure conduit 307 and the pressure monitoring port of the dialysis machine, respectively, to protect the pressure monitoring element of the dialysis machine. In other words, by setting up a pressure sensor protective cover and a pressure conduit, the device can have several corresponding pressure detection tube passages to detect the pressure of the corresponding blood purification passages. The pipeline control component 4 includes several passage control devices to control the opening and closing of the blood pipeline component 2 and the pressure pipeline component 3. The venous reservoir 1 is equipped with different blood flow paths and a structure that sets the venous reservoir 1 as at least two independent cavities. When the blood in one of the cavities of the venous reservoir 1 becomes concentrated or coagulates, treatment can still continue, avoiding the risk of infection caused by the patient's blood coming into contact with the outside world due to the need to change treatment consumables. Moreover, treatment can be continued without interrupting the treatment or forcing the patient to get off the machine, thus improving the safety and effectiveness of the patient's treatment.

[0064] Please refer to Figure 1 In some embodiments, the vein pot 1 is provided with two independent cavities, namely the first cavity 103 and the second cavity 104. That is, in this embodiment, the vein pot 1 is arranged with two cavities, with the first cavity 103 as the main cavity and the second cavity 104 as the spare cavity.

[0065] In this embodiment, the blood tubing assembly 2 further includes a dialysis catheter 206 and a venous catheter (205). The plurality of inlet tubes are divided into two: a first inlet tube 201 and a second inlet tube 202. Both the first inlet tube 201 and the second inlet tube 202 are connected to the dialysis catheter 206. The first inlet tube 201 is connected to the first cavity 103, and the second inlet tube 202 is connected to the second cavity 104. The plurality of outlet tubes are divided into two: a first outlet tube 203 and a second outlet tube 204. Both the first outlet tube 203 and the second outlet tube 204 are connected to the venous catheter 205. The first outlet tube 203... The first inlet pipe 201, the first cavity 103, and the first outlet pipe 204 are connected to the first cavity 104. In other words, in this embodiment, the first inlet pipe 201, the first cavity 103, and the first outlet pipe 203 form a first blood channel through which the blood completes the purification process. The second inlet pipe 202, the second cavity 104, and the second outlet pipe 204 form a second blood channel, so that the device has a backup blood channel. This avoids the risk of infection caused by the need to replace treatment consumables such as pressure sensor protective covers when blood clotting occurs, which would lead to blood coming into contact with the outside world. This greatly improves the safety and effectiveness of the treatment process.

[0066] Optionally, in some embodiments, tee fittings can be used as connectors at the connection points of the first outlet tube 203, the second outlet tube 204, and the intravenous catheter 205, as well as at the connection points of the first inlet tube 201, the second inlet tube 202, and the dialysis catheter 206. Connecting the first inlet tube 201 and the second inlet tube 202 to the dialysis catheter 206 via tee fittings reduces the number of interfaces connected to the dialyzer, and eliminates the need to change the positions of the two inlet tubes when switching blood channels, thus improving the efficiency of blood channel switching.

[0067] Optionally, in some embodiments, the dialysis catheter 206 is provided with a dialysis connector 207, which may be a quick connector to improve the efficiency of connector connection.

[0068] Optionally, in some embodiments, the end of the venous catheter 205 is provided with a quick connector to improve the efficiency of connector connection.

[0069] Optionally, in some embodiments, the end of the dialysis catheter 206 away from the venous chamber 1 is detachably fitted with a dust cap 208 to prevent contamination during storage.

[0070] Please refer to Figure 1In some embodiments, the pipeline control assembly 4 includes a first inlet control device 401, a second inlet control device 402, a first outlet control device 403, and a second outlet control device 404. The first inlet control device 401 is installed on the first inlet pipe 201 and is used to control the opening and closing of the first inlet pipe 201. The second inlet control device 402 is installed on the second inlet pipe 202 and is used to control the opening and closing of the second inlet pipe 202. The first outlet control device 403 is installed on the first outlet pipe 203 and is used to control the opening and closing of the first outlet pipe 203. The second outlet control device 404 is installed on the second outlet pipe 204 and is used to control the opening and closing of the second outlet pipe 204. That is to say, in this embodiment, the blood channel can be controlled using four control devices. The system controls the flow of liquid through a switching state. Specifically, when the first liquid inlet control device 401 and the first liquid outlet control device 403 are open, while the second liquid inlet control device 402 and the second liquid outlet control device 404 are closed, the first blood channel formed by the first liquid inlet pipe 201, the first cavity 103, and the first liquid outlet pipe 203 is in an open state, allowing blood to complete the purification process. When the second liquid inlet control device 402 and the second liquid outlet control device 404 are open, while the first liquid inlet control device 401 and the first liquid outlet control device 403 are closed, the second blood channel formed by the second liquid inlet pipe 202, the second cavity 104, and the second liquid outlet pipe 204 is in an open state, allowing blood to complete the purification process.

[0071] Optionally, in some embodiments, when the venous chamber 1 uses other numbers of cavities, the number of outlet and inlet tubes matches the number of cavities, and the number of blood pipeline control devices matches the number of outlet and inlet tubes. Therefore, by controlling the control devices at the corresponding positions, the on / off and switching states of different blood channels can be controlled to meet the needs of different treatment states.

[0072] Please refer to Figure 1 In some embodiments, a plurality of pressure catheters include a first pressure catheter 301 and a second pressure catheter 302. One end of the first pressure catheter 301 is connected to the first cavity 103, and one end of the second pressure catheter 302 is connected to the second cavity 104. The other ends of the first pressure catheter 301 and the second pressure catheter 302 are both connected to the main pressure catheter 307. That is, the corresponding pressure catheter is connected to the corresponding cavity, and the pressure of the blood in the corresponding cavity will be monitored by the pressure monitoring element of the dialysis device. At least one pressure sensor protective cover includes a first pressure sensor protective cover 303. The first pressure sensor protective cover 303 is installed at the end of the main pressure catheter 307 away from the venous pot 1, and the pressure sensor protective cover protects the dialysis device to prevent blood from contaminating the pressure monitoring element of the dialysis device.

[0073] Optionally, in some embodiments, a tee fitting is used as a connector at the connection position of the first pressure conduit 301, the second pressure conduit 302, and the main pressure conduit 307.

[0074] Alternatively, in some embodiments, the tee may be a tee connector.

[0075] Optionally, in some embodiments, a sliding joint and a locking joint 501 are also installed on the pressure conduit. The sliding joint and the locking joint 501 are located on both sides of the pressure sensor protective cover, so as to facilitate the installation of the pressure sensor protective cover on the pressure conduit.

[0076] Please refer to Figure 1 In some embodiments, the pipeline control assembly 4 further includes a first pressure control device 407 and a second pressure control device 406. The first pressure control device 407 is installed on the first pressure conduit 301 and is used to control the opening and closing of the first pressure conduit 301. The second pressure control device 406 is installed on the second pressure conduit 302 and is used to control the opening and closing of the second pressure conduit 302. That is, when blood passes through different blood channels, the pressure monitoring in the blood channel is controlled by the pressure control device. In specific use, when the first inlet control device 401 and the first outlet control device 403 are open, and the second inlet control device 402 and the second outlet control device 404 are closed, the first blood channel formed by the first inlet pipe 201, the first cavity 103, and the first outlet pipe 203 is in an open state, and the blood... The purification process can be completed through the first blood channel. At this time, the first pressure control device 407 is turned on and the second pressure control device 406 is turned off, so that the blood pressure is monitored through the first pressure conduit 301, thereby realizing the function of monitoring the pressure of the first blood channel. When the second liquid inlet control device 402 and the second liquid outlet control device 404 are turned on, and the first liquid inlet control device 401 and the first liquid outlet control device 403 are turned off, the second blood channel formed by the second liquid inlet pipe 202, the second cavity 104 and the second liquid outlet pipe 204 is in the open state, and the blood can complete the purification process through the second blood channel. At this time, the second pressure control device 406 is turned on and the first pressure control device 407 is turned off, so that the blood pressure is monitored through the second pressure conduit 302, thereby realizing the function of monitoring the pressure of the second blood channel.

[0077] Optionally, in some embodiments, when the venous pot 1 uses other numbers of cavities, the number of pressure catheters matches the number of cavities, and the number of pressure control devices matches the number of pressure catheters. Therefore, by controlling the pressure control devices at the corresponding positions, the pressure of different blood channels can be monitored to meet the needs of different treatment states.

[0078] Please refer to Figure 1In some embodiments, at least one pressure sensor protective cover further includes a second pressure sensor protective cover 304. The second pressure sensor protective cover 304 is installed in the middle of the first pressure conduit 301 and is located between the first pressure control device 407 and the first pressure sensor protective cover 303. In this embodiment, the second pressure sensor protective cover 304 is installed on the first pressure conduit 301 and is located below the first pressure sensor protective cover 303, so that the first pressure conduit 301 has the protection function of a double pressure sensor protective cover, further enhancing the protection of the pressure monitoring unit of the dialysis equipment.

[0079] Optionally, in some embodiments, the plurality of pressure sensor protective covers includes a fourth pressure sensor protective cover. The fourth pressure sensor protective cover is installed in the middle of the second pressure conduit 302 and is located between the second pressure control device 406 and the first pressure sensor protective cover 303. In this embodiment, the fourth pressure sensor protective cover is installed on the second pressure conduit 302, and the fourth pressure sensor protective cover is located below the first pressure sensor protective cover 303, so that the second pressure conduit 302 has the protection function of dual pressure sensor protective covers, further enhancing the protection of the pressure monitoring unit of the dialysis equipment.

[0080] Please refer to Figure 1 In some embodiments, the pipeline control assembly 4 further includes a third pressure control device 405, which is installed on the first pressure conduit 301 and located between the first pressure sensor protective cover 303 and the second pressure sensor protective cover 304, for controlling the opening and closing of the first pressure conduit 301.

[0081] Optionally, in some embodiments, the pipeline control assembly 4 further includes a fourth pressure control device, which is installed on the second pressure conduit 302 and located between the fourth pressure sensor protective cover and the first pressure sensor protective cover 303, for controlling the on / off state of the second pressure conduit 302.

[0082] Please refer to Figure 1In some embodiments, the plurality of pressure conduits also include a backup pressure conduit 305, and at least one pressure sensor protective cover also includes a backup pressure sensor protective cover 306. The backup pressure sensor protective cover 306 is installed on the backup pressure conduit 305. Both ends of the backup pressure conduit 305 are connected to the first pressure conduit 301 and are located between the first pressure control device 407 and the third pressure control device 405, so that the backup pressure sensor protective cover 306 and the second pressure sensor protective cover 304 are connected in parallel. That is, by setting the backup pressure conduit 305, the backup pressure sensor protective cover 306 and the second pressure sensor protective cover 304 are connected in parallel. When the second pressure sensor is contaminated by blood, the backup pressure sensor protective cover 306 can be activated to protect the pressure monitoring unit of the dialysis equipment. Together with the first pressure sensor protective cover 303, it still has a double-layer protection effect on the pressure monitoring unit of the dialysis equipment, and at the same time ensures that pressure monitoring of the first blood channel can still be performed.

[0083] Optionally, in some embodiments, a backup pressure conduit 305 may also be installed on the second pressure conduit 302, and a backup pressure sensor protective cover 306 may also be installed on the backup pressure conduit 305, so that the backup pressure sensor protective cover 306 and the fourth pressure sensor protective cover are connected in parallel, so that the second pressure conduit 302 and the first pressure conduit 301 have the same double-layer protection for the pressure monitoring unit of the dialysis equipment, while also ensuring that pressure monitoring of the second blood channel can still be performed.

[0084] Optionally, in some embodiments, both the first pressure conduit 301 and the second pressure conduit 302 are equipped with a backup pressure conduit 305 with a backup pressure sensor protective cover 306, such that the backup pressure sensor protective cover 306 is connected in parallel with the second pressure sensor protective cover 304 and the fourth pressure sensor protective cover, respectively. That is, the pressure monitoring channel structure of the first blood channel side and the second blood channel side is the same or symmetrical.

[0085] Please refer to Figure 1In some embodiments, the pipeline control assembly 4 further includes a first backup control device 408 and a second backup control device 409. The first backup control device 408 and the second backup control device 409 are respectively installed on both sides of the backup pressure sensor protective cover 306 and are used to control the connection and disconnection between the backup pressure conduit 305 and the first pressure conduit 301. In this embodiment, the third pressure control device 405 can be disposed between the connection between the first pressure conduit 301, the backup pressure conduit 305 and the first pressure sensor protective cover 303. When the blood level rises in the first pressure conduit 301 to contact the second pressure sensor protective cover 304, the first backup control device 408 and the second backup control device 409 are opened, so that the blood pressure is monitored by the dialysis equipment pressure monitoring unit through the backup pressure conduit 305.

[0086] In some embodiments, the pipeline control assembly 4 at the backup pressure detection channel may also include only a first backup control device 408, which is installed on the lower side of the backup pressure sensor protective cover 306 and is used to control the connection and disconnection between the backup pressure conduit 305 and the first pressure conduit 301.

[0087] In the above embodiments, when the pressure sensor protective cover is contaminated with blood, it loses its ventilation function.

[0088] Optionally, in some embodiments, several sets of backup pressure conduits 305 may be provided simultaneously, along with corresponding backup pressure sensor protective covers 306, a first backup control device 408, and a second backup control device 409. When one of the backup pressure sensor protective covers 306 is contaminated, the on / off state of the first backup control device 408 and the second backup control device 409 on the corresponding conduit can be controlled to ensure that the dialysis equipment pressure monitoring unit always has double-layer protection measures and can continue to monitor the pressure of the corresponding blood channel.

[0089] Please refer to Figure 1In some embodiments, the system further includes an injection catheter 5, one end of which is connected to a first pressure catheter 301, and this connected end is located between the first control device 407 and the second pressure sensor protective cover 304. A locking connector 501 is fixedly installed at the other end of the injection catheter 5. The pipeline control assembly 4 also includes an injection control device 410, which controls the opening and closing of the injection catheter 5. When the blood level in the first cavity 103 reaches the second pressure sensor protective cover 304, the third pressure control device 405 and the first pressure control device 405 are closed. After sealing the locking connector 501 with the syringe containing saline solution, set 407, open the injection control device 410 and the first pressure control device 407, and inject saline solution into the first cavity 103, so that the blood remaining in the catheter flows back into the first cavity 103 along with the saline solution, completing the flushing of the first pressure catheter 301. Close the injection control device 410, and open the first backup control device 408, the second backup control device 409, and the third pressure control device 405 to continue treatment using the backup pressure sensor protective cover 306.

[0090] In the above embodiment, the connection between the injection catheter 5 and the first pressure catheter 301 is located between the second pressure sensor protective cover 304 and the first pressure control device 407.

[0091] Optionally, in some embodiments, a one-way valve is installed on the injection catheter 5. The one-way valve of this application controls the direction of liquid flow from left to right, that is, the liquid can only flow from the left end to the right end of the injection catheter 5. The one-way valve is used to prevent blood from contacting the outside air. That is, when physiological saline is injected into the injection catheter 5, it prevents the blood in the first chamber of the venous reservoir 1 from entering the injection catheter 5 along the first pressure catheter 301 and thus coming into contact with the air.

[0092] Optionally, in some embodiments, the free end of the injection catheter 5 is fitted with a locking connector 501 cap, which is fitted with a dust cap to prevent dust and provide a seal.

[0093] A method of use for the aforementioned blood purification system, comprising the following steps:

[0094] S1. System Connection: Connect the dialysis catheter 206 to the dialyzer, connect the venous catheter 205 to the human body, and connect the first pressure sensor protective cover 303 to the pressure monitoring port of the dialysis equipment;

[0095] S2. Initial state check and setting: Check and ensure that the first backup control device 408, the second backup control device 409, the injection control device 410, the second liquid inlet control device 402, the second liquid outlet control device 404, and the second pressure control device 406 are all in the closed state, and that the first pressure control device 407, the third pressure control device 405, the first liquid inlet control device 401, and the first liquid outlet control device 403 are all in the open state;

[0096] S3. Start treatment: Start dialysis treatment, allowing blood to flow sequentially through the dialyzer, the dialysis catheter 206, and the first inlet tube 201 into the first cavity 103. After being filtered by the filter device 102, the blood is returned to the body through the first outlet tube 203 and the venous catheter 205. At the same time, pressure monitoring is achieved through the first pressure catheter 301, the second pressure sensor protective cover 304, the main pressure catheter 307, and the first pressure sensor protective cover 303.

[0097] S4. First blood flow judgment and abnormality triggering: By observing the blood level in the first cavity 103, the blood flow in the cavity is indirectly judged. When the blood level in the first cavity 103 reaches the second pressure sensor protective cover 304, it is determined to be the first pressure monitoring abnormality.

[0098] S5. Abnormal handling and tubing flushing: Close the third pressure control device 405 and the first pressure control device 407, seal the syringe containing saline solution to the locking connector 501, open the injection control device 410 and the first pressure control device 407, push the syringe to inject saline solution into the first cavity 103, so that the blood remaining in the catheter flows back into the first cavity 103 along with the saline solution, thus completing the flushing of the first pressure catheter 301;

[0099] S6. Switching to backup pressure monitoring: After the saline injection is completed, turn off the injection control device 410, turn on the third pressure control device 405, and turn on the first backup control device 408 and the second backup control device 409. Switch to the backup pressure catheter 305 and the backup pressure sensor protective cover 306 for pressure monitoring to ensure that dialysis treatment continues.

[0100] S7. Second blood flow judgment and abnormality triggering: By observing the blood level in the first cavity 103, the blood flow in the cavity is indirectly judged. When the blood level in the first cavity 103 reaches the backup pressure sensor protective cover 306, it is determined to be a second pressure monitoring abnormality.

[0101] S8. Cavity Switching and Treatment Recovery: The first inlet control device 401, the first pressure control device 407, and the first outlet control device 403 are closed, and the second inlet control device 402, the second outlet control device 404, and the second pressure control device 406 are turned on, so that blood is switched to flow through the second inlet pipe 202, the second cavity 104, the second outlet pipe 204, and the venous catheter 205 and returned to the human body. Pressure monitoring is achieved through the second pressure catheter 302, the main pressure catheter 307, and the first pressure sensor protective cover 303, and dialysis treatment continues.

[0102] In other words, the key point of this invention is that: the venous reservoir 1 is provided with at least two independent cavities; the blood tubing assembly 2 includes several inlet and outlet pipes respectively connected to the corresponding cavities; the inlet pipes are all connected to the dialyzer; and the outlet pipes are all connected to the human body, so that blood passes through the dialyzer, inlet pipe, venous reservoir 1, and outlet pipe sequentially before being returned to the patient's body. That is, by using multiple independent cavities, a single venous reservoir 1 can be matched with the blood tubing, and a filter device 102 is separately provided in each cavity, thus achieving multiple independent blood purification pathways. The pressure tubing assembly 3 includes a main pressure conduit 307, at least one pressure sensor protective cover, and several pressure conduits. One end of each pressure conduit is connected to a corresponding cavity, and the other end is connected to the main pressure conduit 307. The at least one pressure sensor protective cover includes a first pressure sensor protective cover. The two ends of the cover 303 are connected to the main pressure conduit 307 and the pressure monitoring port of the dialysis machine, respectively, to protect the pressure monitoring element of the dialysis machine. In other words, by setting up a pressure sensor protective cover and a pressure conduit, the device can have several corresponding pressure detection paths to detect the pressure of the corresponding blood purification path. The pipeline control component 4 includes several path control devices to control the opening and closing of the blood pipeline component 2 and the pressure pipeline component 3. The venous reservoir 1 is equipped with different blood flow paths and a structure that sets the venous reservoir 1 as at least two independent cavities. When the blood in one of the cavities of the venous reservoir 1 becomes concentrated or coagulates, treatment can still continue, avoiding the risk of infection caused by the patient's blood coming into contact with the outside world due to the need to change treatment consumables. Moreover, it does not require interruption of treatment or forcing the patient to get off the machine, thus improving the safety and effectiveness of the patient's treatment.

[0103] In addition to the blood purification system disclosed in the above embodiments, the present invention also provides a method of using the above blood purification system. For the structure of other parts of the method of use, please refer to the prior art, and will not be described in detail here.

[0104] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0105] The blood purification system and its usage method provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of this invention.

Claims

1. A blood purification system, characterized in that, include: The vein pot (1) has at least two independent cavities, and each of the cavities is equipped with a filter device (102). Blood tubing assembly (2), the blood tubing assembly (2) includes several inlet tubes and outlet tubes respectively connected to the corresponding cavities, several inlet tubes are connected to the dialyzer, and several outlet tubes are connected to the human body, so that blood passes through the dialyzer, the inlet tube, the venous chamber (1) and the outlet tube in sequence and is then returned to the human body; The pressure pipeline assembly (3) includes a main pressure conduit (307), at least one pressure sensor protective cover, and several pressure conduits. One end of each of the several pressure conduits is connected to the corresponding cavity, and the other end is connected to the main pressure conduit (307). The at least one pressure sensor protective cover includes a first pressure sensor protective cover (303). Both ends of the first pressure sensor protective cover (303) are connected to the main pressure conduit (307) and the dialysis equipment, respectively, for protecting the pressure monitoring element of the dialysis equipment. The pipeline control component (4) includes several access control devices for controlling the on / off state of the blood pipeline component (2) and the pressure pipeline component (3).

2. The blood purification system according to claim 1, characterized in that, The vein pot (1) is provided with two independent cavities, namely the first cavity (103) and the second cavity (104). The blood tubing assembly (2) further includes a dialysis catheter (206) and a venous catheter (205). The plurality of inlet tubes are two in number, namely a first inlet tube (201) and a second inlet tube (202). Both the first inlet tube (201) and the second inlet tube (202) are connected to the dialysis catheter (206). The first inlet tube (201) is connected to the first cavity (103), and the second inlet tube (202) is connected to the second cavity (104). The dialysis catheter (206) is provided with a dialysis connector (207). The plurality of the discharge tubes are two, namely a first discharge tube (203) and a second discharge tube (204). Both the first discharge tube (203) and the second discharge tube (204) are connected to the venous catheter (205). The first discharge tube (203) is connected to the first cavity (103), and the second discharge tube (204) is connected to the second cavity (104).

3. The blood purification system according to claim 2, characterized in that, The pipeline control component (4) includes: A first liquid inlet control device (401) and a second liquid inlet control device (402), wherein the first liquid inlet control device (401) is installed on the first liquid inlet pipe (201) and is used to control the opening and closing of the first liquid inlet pipe (201), and the second liquid inlet control device (402) is installed on the second liquid inlet pipe (202) and is used to control the opening and closing of the second liquid inlet pipe (202); A first liquid discharge control device (403) and a second liquid discharge control device (404). The first liquid discharge control device (403) is installed on the first liquid discharge pipe (203) and is used to control the opening and closing of the first liquid discharge pipe (203). The second liquid discharge control device (404) is installed on the second liquid discharge pipe (204) and is used to control the opening and closing of the second liquid discharge pipe (204).

4. The blood purification system according to claim 3, characterized in that, The plurality of pressure conduits include a first pressure conduit (301) and a second pressure conduit (302). One end of the first pressure conduit (301) is connected to the first cavity (103), and one end of the second pressure conduit (302) is connected to the second cavity (104). The other ends of the first pressure conduit (301) and the second pressure conduit (302) are both connected to the main pressure conduit (307).

5. The blood purification system according to claim 4, characterized in that, The pipeline control component (4) also includes: A first pressure control device (407) and a second pressure control device (406), wherein the first pressure control device (407) is installed on the first pressure conduit (301) and is used to control the opening and closing of the first pressure conduit (301), and the second pressure control device (406) is installed on the second pressure conduit (302) and is used to control the opening and closing of the second pressure conduit (302).

6. The blood purification system according to claim 5, characterized in that, The at least one pressure sensor protective cover also includes a second pressure sensor protective cover (304), which is installed in the middle of the first pressure conduit (301) and located between the first pressure control device (407) and the first pressure sensor protective cover (303).

7. The blood purification system according to claim 6, characterized in that, The pipeline control component (4) also includes: A third pressure control device (405) is installed on the first pressure conduit (301) and located between the first pressure sensor protective cover (303) and the second pressure sensor protective cover (304) for controlling the opening and closing of the first pressure conduit (301).

8. The blood purification system according to claim 7, characterized in that, The plurality of pressure conduits also include a backup pressure conduit (305), and the at least one pressure sensor protective cover also includes a backup pressure sensor protective cover (306). The backup pressure sensor protective cover (306) is installed on the backup pressure conduit (305). Both ends of the backup pressure conduit (305) are connected to the first pressure conduit (301) and are located between the first pressure control device (407) and the third pressure control device (405), so that the backup pressure sensor protective cover (306) and the second pressure sensor protective cover (304) are in parallel. The pipeline control assembly (4) further includes a first backup control device (408) and a second backup control device (409). The first backup control device (408) and the second backup control device (409) are respectively installed on both sides of the backup pressure sensor protective cover (306) and are used to control the connection and disconnection between the backup pressure conduit (305) and the first pressure conduit (301).

9. The blood purification system according to claim 8, characterized in that, Also includes: The injection conduit (5) has one end connected to the first pressure conduit (301), and the connected end is located between the first pressure control device (407) and the second pressure sensor protective cover (304). The other end of the injection conduit (5) is fixedly installed with a locking connector (501). The pipeline control assembly (4) further includes a push control device (410) for controlling the opening and closing of the push conduit (5).

10. A method of use for the blood purification system of claim 9, characterized in that, Includes the following steps: S1. System connection: Connect the dialysis catheter (206) to the dialyzer, connect the venous catheter (205) to the human body, and connect the first pressure sensor protective cover (303) to the pressure monitoring port of the dialysis equipment; S2. Initial state check and setting: Check and ensure that the first backup control device (408), the second backup control device (409), the injection control device (410), the second liquid inlet control device (402), the second liquid outlet control device (404), and the second pressure control device (406) are all in the closed state, and that the first pressure control device (407), the third pressure control device (405), the first liquid inlet control device (401), and the first liquid outlet control device (403) are all in the open state; S3. Start treatment: Start dialysis treatment, so that blood flows sequentially through the dialyzer, the dialysis catheter (206), and the first inlet tube (201) into the first cavity (103), and after being filtered by the filter device (102), it is returned to the human body through the first outlet tube (203) and the venous catheter (205). At the same time, pressure monitoring is achieved through the first pressure catheter (301), the second pressure sensor protective cover (304), the main pressure catheter (307), and the first pressure sensor protective cover (303). S4. First blood flow judgment and abnormal triggering: By observing the blood height in the first cavity (103), the blood flow in the cavity is indirectly judged. When the blood level in the first cavity (103) reaches the second pressure sensor protective cover (304), it is judged as the first pressure monitoring abnormality. S5. Abnormal handling and tubing flushing: Close the third pressure control device (405) and the first pressure control device (407), seal the syringe containing saline to the locking connector (501), open the injection control device (410) and the first pressure control device (407), push the syringe to inject saline into the first cavity (103), so that the blood remaining in the catheter flows back into the first cavity (103) along with the saline, and complete the flushing of the first pressure catheter (301); S6. Switching to backup pressure monitoring: After the saline injection is completed, turn off the injection control device (410), turn on the third pressure control device (405), and turn on the first backup control device (408) and the second backup control device (409) to switch to the backup pressure catheter (305) and the backup pressure sensor cover (306) for pressure monitoring to ensure that dialysis treatment continues; S7. Second blood flow judgment and abnormal triggering: By observing the blood height in the first cavity (103), the blood flow in the cavity is indirectly judged. When the blood level in the first cavity (103) reaches the backup pressure sensor protective cover (306), it is judged as a second pressure monitoring abnormality. S8. Cavity Switching and Treatment Recovery: The first inlet control device (401), the first pressure control device (407), and the first outlet control device (403) are closed, and the second inlet control device (402), the second outlet control device (404), and the second pressure control device (406) are turned on, so that the blood is switched to flow through the second inlet tube (202), the second cavity (104), the second outlet tube (204), and the venous catheter (205) and returned to the human body. Pressure monitoring is achieved through the second pressure catheter (302), the main pressure catheter (307), and the first pressure sensor protective cover (303) to continue dialysis treatment.

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