Emergency portable hemodialysis device

Abstract

The application discloses an emergency portable hemodialysis device, which comprises a main shell, a dialysis cavity formed in the main shell, a dialysis module built in the dialysis cavity, and a preset amount of dialysis liquid filled in the dialysis cavity. One end of the dialysis module is used for communicating with an arterial blood vessel of a patient, and the other end of the dialysis module is used for communicating with a venous blood vessel of the patient. Thus, when the patient suddenly falls ill and needs hemodialysis treatment, the one end of the dialysis module is only needed to be communicated with the arterial blood vessel of the patient, and the other end is communicated with the venous blood vessel, so that the dialysis liquid filled in the main shell is used for dialyzing blood of the patient, quantitative dialysis pre-treatment of the patient is realized, the patient's illness is stabilized, and a buffer time is provided for the arrival of an ambulance or site transfer. The whole structure of the application is simple, the complexity is low, the number of parts is small, and the size and volume are small, so that the application is easy to carry and use, quantitative hemodialysis pre-treatment of the patient can be conveniently and timely performed, and the dependence on a treatment environment is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an emergency portable hemodialysis device. Background Technology

[0002] Currently, patients suffering from uremia require long-term hemodialysis treatment. Hemodialysis involves simultaneously introducing the patient's blood and dialysate into a dialyzer. Using the semi-permeable membrane of the dialyzer (artificial kidney), excess toxins and water accumulated in the blood are removed, while bases are replenished to correct acidosis, adjust electrolyte imbalances, and replace the excretory function of the kidneys. Hemodialysis can also be applied to end-stage renal disease, poisoning, biochemical trauma, and other diseases, providing dialysis filtration, detoxification, treatment, maintaining the body's acid-base and ion balance, and reducing the levels of various toxins in the body.

[0003] In existing technologies, patients with renal function replacement needs usually use outpatient dialysis, emergency dialysis, or CRRT (continuous renal replacement therapy). Patients need to have vascular access prepared in advance, and after arriving at the hospital, professional doctors will carry out treatment according to the prescription.

[0004] However, traditional dialysis treatment is only suitable for patients with stable conditions and slow disease progression. For patients with sudden illnesses, treatment can only be initiated after they have been transferred from the accident site to the hospital, making timely treatment at the accident site impossible and potentially leading to a worsening of their condition during the transfer. Furthermore, in traditional outpatient and emergency models, patients, consumables, equipment, and doctors must be present simultaneously, resulting in a strong dependence on medical care, available space, transportation, and timeliness. This makes it difficult to provide emergency, unified treatment in situations involving mass casualties, such as heatstroke outbreaks. In addition, traditional treatment equipment is installed in hospital wards; the equipment is expensive and bulky, difficult to install and maintain, and virtually impossible to move, making it difficult to access at any time.

[0005] Therefore, how to conveniently and promptly perform hemodialysis treatment on patients, reduce dependence on the treatment environment, and make it easy to carry out is a technical problem faced by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide an emergency portable hemodialysis device that can conveniently and promptly provide quantitative dialysis pretreatment to patients, reduce dependence on the treatment environment, and is easy to carry.

[0007] To address the aforementioned technical problems, the present invention provides an emergency portable hemodialysis machine, comprising a main housing, a dialysis chamber formed within the main housing, and a dialysis module embedded in the dialysis chamber. The dialysis chamber is filled with a preset amount of dialysis fluid. One end of the dialysis module is used to connect with the patient's arterial blood vessel, and the other end of the dialysis module is used to connect with the patient's venous blood vessel.

[0008] Preferably, the device further includes an arterial assembly disposed at one end of the main housing and a venous assembly disposed at the other end of the main housing. The arterial assembly is used to introduce the patient's arterial blood into each fiber tube of the dialysis module, and the venous assembly is used to draw the blood passing through the dialysis module out into the patient's venous blood vessels.

[0009] Preferably, the arterial assembly includes an arterial housing, an arterial lumen formed within the arterial housing, and an arterial interface formed on the arterial housing and communicating with the arterial lumen. The arterial lumen is connected to one end of each fiber tube of the dialysis module, and the arterial interface is used to communicate with the patient's arterial blood vessels.

[0010] Preferably, the vein assembly includes a vein housing, a vein lumen formed within the vein housing, and a vein interface formed on the vein housing and communicating with the vein lumen. The vein lumen is connected to the other end of each fiber tube of the dialysis module, and the vein interface is used to communicate with the patient's vein.

[0011] Preferably, a filter screen is provided in the venous lumen to intercept blood clots formed in the blood, and a one-way valve is provided in the venous interface to prevent blood in the patient's vein from flowing back into the venous lumen.

[0012] Preferably, a waste liquid chamber is further provided inside the main housing, and the waste liquid chamber is connected to the end of the dialysis chamber near the arterial assembly; a waste liquid switch is provided on the arterial housing for controlling the on / off state of the waste liquid chamber and the dialysis chamber.

[0013] Preferably, the main housing is further provided with a fluid replenishment chamber, which stores a preset amount of dialysate, and the fluid replenishment chamber is connected to the end of the dialysis chamber near the vein assembly; the vein housing is provided with a fluid replenishment switch for controlling the on / off state of the fluid replenishment chamber and the dialysis chamber.

[0014] Preferably, the dialysis module includes sealing plates distributed on opposite sides and multiple fiber tubes inserted between the sealing plates. The two sealing plates abut against the arterial assembly and the venous assembly, respectively, and the two ends of each fiber tube are connected to the arterial lumen in the arterial assembly and the venous lumen in the venous assembly, respectively.

[0015] Preferably, it also includes a pre-fill cleaner built into the dialysis chamber, the pre-fill cleaner being used to clean the arterial interface of the arterial assembly and the venous interface of the venous assembly before dialysis.

[0016] Preferably, the pre-filled cleaner includes a tube body, a first lumen and a second lumen opened in the tube body and isolated from each other, a first piston slidably disposed in the first lumen, and a second piston slidably disposed in the second lumen. The space between the first piston and the inner wall of the first lumen is filled with compressed gas, and the space between the second piston and the inner wall of the second lumen is filled with compressed gas. The first lumen is connected to the arterial lumen of the arterial assembly, and the second lumen is connected to the venous lumen of the venous assembly.

[0017] Preferably, each of the sealing plates has a clearance hole in its central area, and each of the fiber tubes is distributed around the clearance hole; the two ends of the pre-filled cleaner are respectively installed in the corresponding clearance holes.

[0018] The emergency portable hemodialysis machine provided by this invention mainly includes a main shell, a dialysis chamber, and a dialysis module. The main shell, the main structure of the hemodialysis machine, is typically elongated and cylindrical, with a small overall size for easy portability. The dialysis chamber, a sealed cavity structure located within the main shell, is filled with a predetermined amount of dialysate and primarily serves to provide the dialysis treatment environment; it is typically cylindrical. The dialysis module is installed within the dialysis chamber, essentially immersed in the dialysate. One end of the dialysis module connects to the patient's artery to introduce arterial blood into the module, while the other end connects to the patient's vein. This allows the arterial blood to exchange substances with the dialysate within the dialysis chamber as it flows through the module, diffusing toxic substances from the blood into the dialysate, thus purifying the blood. The purified blood then flows back into the vein through the other end of the dialysis module, repeating this cycle to achieve quantitative dialysis pre-treatment for the patient. Thus, the emergency portable hemodialysis machine provided by this invention allows for quantitative pre-dialysis treatment of the patient when a sudden illness requires hemodialysis. Simply connect one end of the dialysis module to the patient's artery and the other end to a vein. The dialysate filled within the main casing then dialyzes the patient's blood, stabilizing the patient's condition and providing a buffer time for the arrival of an ambulance or relocation. Compared to existing technologies, the emergency portable hemodialysis machine provided by this invention has a simpler overall structure, lower complexity, fewer components, and a smaller size, making it easy to carry and use. It enables convenient and timely quantitative pre-dialysis treatment, allowing for on-site emergency care and reducing dependence on the treatment environment, while also buying time for subsequent professional treatment. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0021] Figure 2 A schematic diagram of the main shell structure.

[0022] Figure 3 for Figure 2 A partial longitudinal sectional view.

[0023] Figure 4 This is a schematic diagram of the specific structure of the arterial assembly.

[0024] Figure 5 This is a schematic diagram of the specific structure of the vein assembly.

[0025] Figure 6 This is a schematic diagram of the specific structure of the dialysis module.

[0026] Figure 7 This is a longitudinal sectional view of the pre-charge cleaner.

[0027] Figure 8 This is a schematic diagram showing the flow of blood and dialysate within the main casing.

[0028] in, Figure 1 — Figure 8 middle:

[0029] Main housing—11, dialysis chamber—12, dialysis membrane bundle—13, arterial assembly—14, venous assembly—15, waste fluid chamber—16, replenishment fluid chamber—17, clamping groove—18, pre-fill cleaner—19;

[0030] Sealing plate—131, fiber tube—132, clearance hole—133;

[0031] Artery shell—141, artery lumen—142, artery interface—143, elastic pressure membrane—144, waste liquid switch—145;

[0032] Vein housing—151, vein lumen—152, vein interface—153, filter—154, infusion switch—155;

[0033] Tube body—191, first lumen—192, second lumen—193, first piston—194, second piston—195. Detailed Implementation

[0034] 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.

[0035] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0036] In one specific embodiment provided by the present invention, the emergency portable hemodialysis machine mainly includes a main housing 11, a dialysis chamber 12, and a dialysis module 13.

[0037] The main shell 11 is the main structure of the hemodialysis machine. It is usually long and cylindrical, with a small overall size and easy to carry.

[0038] The dialysis chamber 12 is located inside the main shell and is a sealed cavity structure. It is filled with a predetermined amount of dialysis fluid and is mainly used to provide a dialysis treatment environment. It is usually cylindrical.

[0039] The dialysis module 13 is installed inside the dialysis chamber 12, essentially immersed in the dialysate. One end of the dialysis module 13 is connected to the patient's arterial blood to introduce arterial blood into the dialysis module, while the other end is connected to the patient's venous blood. This allows the arterial blood to exchange substances with the dialysate in the dialysis chamber 12 as it flows through the dialysis module 13, diffusing toxic substances from the blood into the dialysate and purifying the blood. The purified blood then flows back into the venous blood through the other end of the dialysis module 13, thus completing the cycle and enabling quantitative dialysis pretreatment for the patient.

[0040] Thus, the emergency portable hemodialysis machine provided in this embodiment can perform hemodialysis treatment on patients who suddenly fall ill and need it. Simply connect one end of the dialysis module 13 to the patient's artery and the other end of the dialysis module 13 to the patient's vein. The patient's blood can then be dialyzed using the dialysis fluid filled in the dialysis chamber 12, achieving quantitative dialysis pretreatment for the patient. This helps stabilize the patient's condition as much as possible and provides a buffer time for the arrival of the ambulance or relocation.

[0041] Compared to existing technologies, the emergency portable hemodialysis device provided in this embodiment has a simple overall structure, low complexity, fewer parts, and smaller size, making it easy to carry and use. It can conveniently and promptly provide quantitative hemodialysis pretreatment for patients, complete emergency treatment on-site, reduce dependence on the treatment environment, and buy time for subsequent professional treatment.

[0042] like Figure 2 , Figure 3 , Figure 6 As shown, Figure 2 A schematic diagram of the main shell 11 is shown below. Figure 3 for Figure 2 Partial longitudinal section view, Figure 6 This is a schematic diagram of the specific structure of the dialysis module 13.

[0043] In one optional embodiment of the dialysis module 13, the dialysis module 13 mainly includes sealing plates 131 and fiber tubes 132. The fiber tubes 132 are the core component, being hollow tubes with a small diameter and semi-permeable membrane walls. A large number of fiber tubes 132 are typically bundled together, such as 10,000 to 15,000 tubes. Two sealing plates 131 are generally provided, distributed on opposite sides, positioned at both ends of the fiber tubes 132, respectively forming tight contact with the arterial housing 141 in the arterial assembly 14 and the venous housing 151 in the venous assembly 15, and sealing the arterial lumen 142 and venous lumen 143, respectively. Specifically, both ends of each fiber tube 132 are inserted into the sealing plates 131 on both sides, fixing and connecting the fiber tubes 132, sealing the gaps between the fiber tubes 132, without affecting the conductivity of the fiber tubes 132. During hemodialysis, dialysate fills the gaps between each fiber tube 132. Blood flows inside each fiber tube 132, while dialysate flows outside each fiber tube 132. The two flow in opposite directions. Toxins in the blood are removed through the principle of semipermeable membrane, and excess water in the blood is removed through ultrafiltration and osmosis.

[0044] To facilitate blood extraction and return, this embodiment includes an arterial assembly 14 and a venous assembly 15. The arterial assembly 14 is located at one end of the main housing 11 and is primarily used to connect to the patient's arterial blood vessels, allowing arterial blood to be drawn into the main housing 11 and then into the fiber tubes 132 of the dialysis module 13. The venous assembly 15 is located at the other end of the main housing 11 and is primarily used to extract and return blood after dialysis via the dialysis module 13 to the patient's venous blood vessels.

[0045] like Figure 4 As shown, Figure 4 This is a schematic diagram of the specific structure of the arterial assembly 14.

[0046] In one alternative embodiment of the arterial assembly 14, the arterial assembly 14 mainly includes an arterial housing 141, an arterial cavity 142, and an arterial interface 143. The arterial housing 141 is the main structure of the arterial assembly 14, its shape matching that of the main housing 11, such as a curved triangle, and is typically plate-shaped, fastened to one end face of the main housing 11. The arterial cavity 142 is located within the arterial housing 141 and is mainly used to temporarily store a certain amount of arterial blood. It is typically circular, and its size is comparable to that of the sealing plate 131 in the dialysis module 13. It can temporarily store a certain amount of arterial blood between the cavity wall and the sealing plate 131. Simultaneously, the sealing plate 131 seals both ends of the dialysis cavity 12, preventing blood from the arterial cavity 142 from entering the dialysis cavity 12 and mixing with the dialysate, ensuring that blood can only enter one end of each fiber tube 132 exposed on the sealing plate 131. The arterial interface 143 is located on the arterial housing 141, typically on its side wall, and communicates with the arterial lumen 142 inside the housing. It is primarily used to connect to the patient's arterial vessels. Generally, an arterial fistula needle is installed in the arterial interface 143 for easy connection to the patient's arterial vessels. With this configuration, the patient's arterial blood can enter the arterial lumen 142 through the arterial interface 143 and then flow into each of the fiber optic tubes 132.

[0047] Furthermore, due to the physiological pressure difference between arteries and veins in the human body, when the arterial assembly 14 is connected to an artery and the venous assembly 15 is connected to a vein, blood can naturally flow through the dialysis module 13 under the influence of this physiological pressure difference. However, for some patients with low blood volume or insufficient blood flow, blood flow may be obstructed. To address this, this embodiment also adds an elastic pressure membrane 144 to the arterial assembly 14. The elastic pressure membrane 144 covers the arterial lumen 142, acting as one side wall of the arterial lumen 142, and is elastic, capable of elastic expansion and contraction. When the elastic pressure membrane 144 is pressed, a certain pressure is applied to the arterial lumen 142. Since a certain amount of blood is temporarily stored in the arterial lumen 142, the blood can be pressurized, allowing it to flow smoothly through the dialysis module 13.

[0048] Furthermore, to prevent pressurized blood from flowing back from the arterial interface 143 into the patient's arterial blood vessels, this embodiment also includes a one-way valve within the arterial interface 143. Specifically, this one-way membrane functions as a one-way valve, allowing blood to flow in only one direction, from the arterial blood vessels into the arterial lumen 142, and preventing reverse flow.

[0049] Furthermore, considering that patients with severe conditions may require prolonged dialysis and frequent blood pressurization, a pressure-boosting blood pump is added in this embodiment. Specifically, the actuator of this pressure-boosting blood pump is poweredly connected to the outer wall of the elastic pressure diaphragm 144, enabling repeated pressing of the outer wall of the elastic pressure diaphragm 144 at a certain frequency, thereby continuously pressurizing the blood. Generally, this pressure-boosting blood pump can be a peristaltic pump, capable of pressurizing the arterial cavity 142 through hydraulic pressure, or by driving the piston rod of a micro-cylinder to extend and retract, thereby repeatedly pressing the elastic pressure diaphragm 144. Simultaneously, a battery compartment can be designed within the pressure-boosting blood pump for battery power, avoiding cable power supply, thus minimizing structural size and weight, and facilitating portability and use. Of course, the elastic pressure diaphragm 144 can also be replaced by pressure-boosting components such as an elastic balloon or plunger. Correspondingly, the actuator of the pressure-boosting blood pump can repeatedly squeeze the elastic balloon or repeatedly push and pull the plunger at a certain frequency, achieving the same effect of pressurizing the arterial cavity 142.

[0050] like Figure 5 As shown, Figure 5 This is a schematic diagram of the specific structure of the vein assembly 15.

[0051] Similarly, in one optional embodiment of the vein assembly 15, the vein assembly 15 mainly includes a vein housing 151, a vein lumen 152, and a vein interface 153. The vein housing 151 is the main structure of the vein assembly 15, its shape matching that of the main housing 11, such as a curved triangle, and is typically plate-shaped, fastened to the other end face of the main housing 11, and aligned with the aforementioned arterial housing 141. The vein lumen 152 is located within the vein housing 151 and is mainly used to temporarily store a certain amount of purified blood. It is typically circular, and its size is comparable to that of the sealing plate 131 in the dialysis module 13. It can temporarily store a certain amount of purified blood between the lumen wall and the sealing plate 131, while the sealing plate 131 seals both ends of the dialysis chamber 12, preventing blood in the vein lumen 152 from entering the dialysis chamber 12 and mixing with the dialysate. The venous interface 153 is located on the venous housing 151, usually on the side wall of the venous housing 151, and is connected to the venous lumen 152 inside the venous housing 151. It is mainly used to connect with the patient's venous blood vessels.

[0052] Typically, a venous fistula needle is installed in the venous interface 153 to facilitate connection with the patient's venous blood vessels. With this configuration, purified blood flows out from the other end of the fiber optic tube 132 and enters the venous lumen 152, then flows back into the patient's venous blood vessels through the venous interface 153.

[0053] Furthermore, considering the possibility of blood clots forming in the patient's blood, in order to prevent blood clots from flowing back into the patient's veins, this embodiment also provides a filter 154 in the vein lumen 152 to physically intercept the blood and remove blood clots from the blood.

[0054] Furthermore, to prevent blood from flowing back into the venous lumen 152 from the patient's vein, this embodiment also includes a one-way valve within the venous interface 153. Specifically, this one-way valve functions like a one-way valve, allowing blood to flow in only one direction, from the venous lumen 152 into the vein, while preventing reverse flow.

[0055] In addition, to facilitate the collection of consumed dialysate, this embodiment also includes a waste fluid chamber 16 within the main housing 11. Specifically, the waste fluid chamber 16 is typically located within the main housing 11 on one side of the dialysis chamber 12, maintaining the same length as the dialysis chamber 12, and is usually cylindrical. The opening of the waste fluid chamber 16 is also connected to one end sidewall of the dialysis chamber 12, specifically to the end sidewall of the dialysis chamber 12 near the arterial assembly 14. Correspondingly, this embodiment also includes a waste fluid switch 145 on the arterial housing 141 to control the opening and closing state between the opening of the waste fluid chamber 16 and the sidewall opening of the dialysis chamber 12. Specifically, the waste fluid switch 145 can be a control valve or similar component, allowing for convenient adjustment of the opening degree.

[0056] Meanwhile, considering that the dialysis chamber 12 is usually pre-filled with a certain amount of dialysate, but the dialysate may be insufficient during long dialysis treatments, this embodiment provides a refill chamber 17 within the main housing 11. Specifically, the refill chamber 17 is typically located on the other side of the dialysis chamber 12 within the main housing 11, maintaining the same length as the dialysis chamber 12, and is usually cylindrical. The opening of the refill chamber 17 also communicates with the other end sidewall of the dialysis chamber 12, specifically with the end sidewall of the dialysis chamber 12 near the venous assembly 15. Correspondingly, this embodiment also provides a refill switch 155 on the venous housing 151 to control the opening and closing state between the opening of the refill chamber 17 and the sidewall opening of the dialysis chamber 12. Specifically, the refill switch 155 can be a control valve or similar component, allowing for convenient adjustment of the opening degree.

[0057] With this configuration, when the replenishment switch 155 and the waste liquid switch 145 are turned on, the dialysate stored in the replenishment chamber 17 can automatically flow into the dialysis chamber 12 under the action of pressure difference, and then enter the waste liquid chamber 16 after the dialysis operation is completed.

[0058] To facilitate maintaining the stable position of the arterial fistula needle in the arterial interface 143 and the venous fistula needle in the venous interface 153, this embodiment also provides a clamping groove 18 on the side wall of the main housing 11 to clamp the arterial fistula needle and the venous fistula needle through the clamping groove 18.

[0059] Considering that the arterial interface 143 in the arterial assembly 14 needs to be connected to the patient's arterial blood vessels, and the venous interface 153 in the venous assembly 15 needs to be connected to the patient's venous blood vessels, in order to ensure the cleanliness of the instruments and prevent bacteria, dust, and other harmful substances on the arterial interface 143 or venous interface 153 from entering the patient's blood vessels, a pre-filled cleaner 19 is added in this embodiment. This pre-filled cleaner 19 is built into the dialysis chamber 12 and is mainly used to discharge a portion of the pre-filled cleaning fluid through the principle of pressure loss expansion before the arterial interface 143 and venous interface 153 are connected to the patient's blood vessels, thereby achieving the effect of pre-cleaning the arterial interface 143 and venous interface 153.

[0060] like Figure 7 , Figure 8 As shown, Figure 7 This is a longitudinal sectional view of the pre-charge cleaner 5. Figure 8 This is a schematic diagram of the flow of blood and dialysate within the main housing 11 (solid lines represent blood, and dashed lines represent dialysate).

[0061] Specifically, the pre-charge cleaner 19 is generally cylindrical, mainly comprising a tube body 191, a first cavity 192, a second cavity 193, a first piston 194, and a second piston 195. The tube body 191 is the main structure of the pre-charge cleaner 19, specifically a hollow cylindrical tube. The first cavity 192 is located at one axial end of the tube body 191, and the second cavity 193 is located at the other axial end of the tube body 191; the two are isolated from each other by baffles or other components. The first piston 194 is embedded in the first cavity 192 and can slide within it. The second piston 195 is embedded in the second cavity 193 and can slide within it. Simultaneously, the first piston 194 and the baffle form a cylindrical cavity within the first cavity 192, which is pre-charged with compressed gas. Similarly, using the second piston 195 and the baffle, a cylindrical cavity is formed within the second tube 193, and this cavity is pre-filled with compressed gas. Furthermore, a certain amount of cleaning fluid is filled in the cavity outside the first piston 194 within the first tube 192 and the cavity outside the second piston 195 within the second tube 193 to assist in gas purging and enhance the cleaning effect.

[0062] With this configuration, since the arterial fistula needle in the arterial interface 143 and the venous fistula needle in the venous interface 153 are usually equipped with clamps, they maintain a sealed state when not in use, thereby maintaining a certain high pressure in the arterial lumen 142 and venous lumen 152 within the main housing 11. This high pressure keeps the first piston 194 and the second piston 195 in a stable position. When needed, the clamps on the arterial fistula needle and the venous fistula needle are removed simultaneously. At this time, both the arterial lumen 142 and the venous lumen 152 are depressurized, and the compressed gas in the first lumen 192 and the second lumen 193 expands due to depressurization, which in turn pushes the first piston 194 and the second piston 195 to their respective positions. 94. The second piston 195 is pushed outward (finally stopping at the outer end of the first lumen 192 and the second lumen 193, or stopping in the relief hole 133), thereby expelling the pre-filled cleaning fluid in the first lumen 192 and the second lumen 193, as well as the gas in the arterial lumen 142 and the venous lumen 152, to the outside. The gas is then discharged through the arterial lumen 142 and the arterial interface 143, and the venous lumen 152 and the venous interface 153, respectively, thus realizing the depressurization and venting operation and the cleaning operation (including gas blowing and cleaning with cleaning fluid) of the arterial interface 143 and the arterial fistula needle, and the venous interface 153 and the venous fistula needle.

[0063] In addition, to minimize the space occupied by the pre-filled cleaner 5 in the dialysis chamber 12 and avoid interfering with the installation of the dialysis module 13 in the dialysis chamber 12, in this embodiment, the dialysis module 13 is specifically a hollow structure, that is, a clearance hole 133 is provided on both sides of the sealing plate 131, and each fiber tube 132 is arranged in a ring around the clearance hole 133, thereby leaving a cylindrical cavity in the central area of ​​each fiber tube 132, and the pre-filled cleaner 5 can be installed in the cylindrical cavity. The two ends of the tube body 51 of the pre-filled cleaner 5 are respectively installed in the clearance holes 133 of the sealing plate 131 on both sides to achieve positioning connection.

[0064] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An emergency portable hemodialysis machine, characterized in that, It includes a main housing (11), a dialysis chamber (12) opened in the main housing (11), and a dialysis module (13) built into the dialysis chamber (12). The dialysis chamber (12) is filled with a preset amount of dialysis fluid. One end of the dialysis module (13) is used to communicate with the patient's arterial blood vessels, and the other end of the dialysis module (13) is used to communicate with the patient's venous blood vessels. It also includes an arterial lumen (142), an arterial interface (143), a venous lumen (152), and a venous interface (153); the arterial lumen (142) is located at one end of the main housing (11) and communicates with one end of the dialysis module (13), and the arterial interface (143) communicates with the arterial lumen (142); the venous lumen (152) is located at the other end of the main housing (11) and communicates with the other end of the dialysis module (13), and the venous interface (153) communicates with the venous lumen (152); The arterial lumen (142) is covered with an elastic pressure membrane (144). After the dialysis module (13) is connected to the patient's blood vessels, it can drive blood to flow through the dialysis module (13) by pressing the elastic pressure membrane (144) and / or drive blood to flow through the dialysis module (13) by the patient's arteriovenous pressure difference. The dialysis chamber is equipped with a pre-filled cleaner (19), which is pre-filled with cleaning fluid and compressed gas. When the compressed gas loses pressure and expands, it can discharge the cleaning fluid through the arterial interface (143) and the venous interface (153) to clean the arterial interface (143) and the venous interface (153).

2. The emergency portable hemodialysis machine according to claim 1, characterized in that, It also includes an arterial assembly (14) disposed at one end of the main housing (11) and a venous assembly (15) disposed at the other end of the main housing (11). The arterial assembly (14) is used to introduce the patient's arterial blood into each fiber tube (132) of the dialysis module (13), and the venous assembly (15) is used to draw the blood passing through the dialysis module (13) into the patient's venous blood vessels.

3. The emergency portable hemodialysis machine according to claim 2, characterized in that, The arterial assembly (14) includes an arterial housing (141), an arterial lumen (142) is formed within the arterial housing (141), and an arterial interface (143) is formed on the arterial housing (141). The arterial lumen (142) is connected to one end of each fiber tube (132) of the dialysis module (13), and the arterial interface (143) is used to connect with the patient's arterial blood vessels.

4. The emergency portable hemodialysis machine according to claim 2, characterized in that, The vein assembly (15) includes a vein housing (151), a vein lumen (152) is opened inside the vein housing (151), a vein interface (153) is opened on the vein housing (151), the vein lumen (152) is connected to the other end of each fiber tube (132) of the dialysis module (13), and the vein interface (153) is used to connect with the patient's vein.

5. The emergency portable hemodialysis machine according to claim 4, characterized in that, The venous interface (153) is provided with a one-way valve to prevent blood in the patient's vein from flowing back into the venous cavity (152).

6. The emergency portable hemodialysis machine according to claim 3, characterized in that, The main housing (11) is also provided with a waste liquid chamber (16), and the waste liquid chamber (16) is connected to the end of the dialysis chamber (12) near the arterial assembly (14); the arterial housing (141) is provided with a waste liquid switch (145) for controlling the on / off state of the waste liquid chamber (16) and the dialysis chamber (12).

7. The emergency portable hemodialysis machine according to claim 4, characterized in that, The main housing (11) is also provided with a fluid replenishment chamber (17), which stores a preset amount of dialysis fluid, and the fluid replenishment chamber (17) is connected to the end of the dialysis chamber (12) near the vein assembly (15); the vein housing (151) is provided with a fluid replenishment switch (155) for controlling the on / off state of the fluid replenishment chamber (17) and the dialysis chamber (12).

8. The emergency portable hemodialysis machine according to claim 2, characterized in that, The dialysis module (13) includes sealing plates (131) distributed on opposite sides and multiple fiber tubes (132) inserted between each sealing plate (131). The two sealing plates (131) abut against the arterial assembly (14) and the venous assembly (15) respectively. The two ends of each fiber tube (132) are connected to the arterial lumen (142) in the arterial assembly (14) and the venous lumen (152) in the venous assembly (15) respectively.

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