Blood purification apparatus

Abstract

The application belongs to the technical field of medical devices, and relates to a blood purification device, which comprises a shell, a liquid flow pipeline arranged on the shell, a liquid flow control device arranged on the shell and connected with an intermediate section of a purification main pipeline of the liquid flow pipeline, a display device arranged on the top of the shell, and a liquid supplementing device; the liquid supplementing device comprises a weighing assembly arranged on the top of the shell, a weighing cavity formed in the weighing assembly, a mounting support detachably vertically mounted in the weighing cavity, and a liquid storage part; in the process of liquid supplementing, when the preset liquid in the liquid storage part is relatively much, the liquid storage part is placed in the weighing cavity; when the preset liquid in the liquid storage part is relatively little, the mounting support is arranged in the weighing cavity, and the liquid storage part is vertically arranged in the mounting support in an upside-down manner. The blood purification device has the advantages of simple and reliable structure, more flexible use, higher compatibility, convenient liquid supplementing steps, and the like, and is beneficial to improving the safety and control convenience in the process of blood purification treatment of patients.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a blood purification device. Background Technology

[0002] Blood purification equipment is a medical device that draws blood from a patient's body, purifies and corrects it through various processes, and then returns the treated blood to the body for treatment. Currently, blood purification equipment is widely used in clinical practice for various types of cardiovascular instability, acute and chronic renal failure with high catabolism or cerebral edema, as well as multiple organ dysfunction syndrome, acute respiratory distress syndrome, crush syndrome, acute necrotizing pancreatitis, chronic heart failure, hepatic encephalopathy, and drug and toxin poisoning.

[0003] Currently, blood purification equipment typically includes anticoagulation systems, display systems, power input systems, motor control systems, and fluid circuit control systems. This makes the structure of blood purification equipment relatively complex and bulky, resulting in inconvenience for users and limiting its applicability and compatibility. For example, in blood purification treatment, fluid replacement bags are often used. However, in practice, these bags are usually placed in a dedicated container, which makes it difficult for all the fluid to drain out, often leaving a small amount of residual fluid. To avoid waste, users often have to manually squeeze out the remaining fluid from the bag, which increases the risk of infection for patients undergoing blood purification treatment, makes it difficult to accurately control the infusion rate, and does not comply with the standard safe operating procedures for blood purification treatment. Furthermore, unsafe infusion procedures can compromise the safety of the entire blood purification treatment. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems of existing blood purification equipment being inconvenient to use and having difficulty in ensuring the safety of fluid replacement.

[0005] To address the aforementioned technical problems, embodiments of the present invention provide a blood purification device, employing the following technical solution:

[0006] The blood purification device includes:

[0007] case;

[0008] A fluid flow pipeline is disposed on the housing; the fluid flow pipeline includes a purification main pipeline, the two ends of which are respectively used to connect an artery and a vein;

[0009] A liquid flow control device is installed on the housing and connected to the middle section of the main purification pipeline to control the flow of liquid in the main purification pipeline.

[0010] A display device is disposed on the top of the housing; and

[0011] A liquid replenishment device, located at the top of the housing, is used to deliver a preset liquid to the main purification pipeline as needed;

[0012] The fluid replenishment device includes:

[0013] A weighing assembly is disposed on the top of the housing; a weighing chamber is formed on the weighing assembly;

[0014] The mounting bracket is detachably and vertically installed in the weighing chamber; and

[0015] Liquid storage unit, used to store a preset liquid;

[0016] During the process of transporting the preset liquid to the purification main pipeline, when the total weight of the liquid storage component is greater than the preset safe weight, the liquid storage component is placed in the weighing chamber; when the total weight of the liquid storage component is less than or equal to the preset safe weight, the mounting support is installed in the weighing chamber, and the liquid storage component is installed upside down and vertically on the mounting support.

[0017] In a preferred embodiment of some embodiments of the blood purification device of the present invention, the weighing component includes a tray, and the weighing chamber is recessed on the top of the tray;

[0018] When the liquid storage device is a liquid storage bag, the mounting support is a support rod with a hook; the hook is used to hang the liquid storage bag upside down.

[0019] Alternatively, when the liquid storage component is a liquid storage bottle, the mounting support is a support with a clamping part; the clamping part is used to clamp the inverted liquid storage bottle.

[0020] In a preferred embodiment of the blood purification device of the present invention, one end of the mounting support is mounted on the tray via a detachable structure within the weighing chamber.

[0021] In a preferred embodiment of some embodiments of the blood purification device of the present invention, the detachable structure includes interlocking sockets and plugs, wherein one of the tray and the mounting bracket is provided with the socket and the other is provided with the plug;

[0022] Alternatively, the detachable structure includes a first magnetic element and a second magnetic element that attract each other magnetically, with one of the tray and the mounting bracket having the first magnetic element and the other having the second magnetic element.

[0023] In a preferred embodiment of the blood purification device of the present invention, the display device includes:

[0024] The display frame is vertically mounted on the top of the housing;

[0025] The display panel is fitted onto the display frame and a mounting cavity is formed between the display panel and the display frame;

[0026] A hinged structure is provided within the mounting cavity;

[0027] The hinge structure has two ends connected to the inner sidewalls of the display panel and the display frame, respectively, to hinge the display panel and the display frame, so that the display panel and the display frame can be opened or closed relative to each other, and to support the display panel.

[0028] In a preferred embodiment of the blood purification device of the present invention, the hinge structure includes:

[0029] The first end bracket is fixedly installed on the inner wall of the display panel;

[0030] The second end frame is fixedly installed on the inner wall of the display frame at the bottom of the first end frame;

[0031] The first support rod is pivotally connected at its top end to the first end frame and at its bottom end to the second end frame;

[0032] The second support rod is pivotally connected at its top to the first end frame and at its bottom to the second end frame;

[0033] When the display panel is open or closed, both the first support rod and the second support rod can support the display panel.

[0034] In a preferred embodiment of the blood purification device of the present invention, the hinge structure is located on the bottom side of the display frame within the mounting cavity; and two hinge structures are provided, with the two hinge structures connected to the left and right sides of the display panel.

[0035] In a preferred embodiment of the blood purification device of the present invention, the liquid flow control device is a pump; the pump includes:

[0036] A base is disposed in the housing and is provided with a pipeline channel for the installation of the main purification pipeline;

[0037] An end cover plate is axially disposed on one side of the housing and together with the housing forms an adjustable mounting opening;

[0038] An extrusion roller is axially disposed within the housing and located inside the pipeline channel. The extrusion roller includes a first support base, a second support base, a rotating shaft, a cylindrical roller, and a conical pump head. The first and second support bases are axially spaced within the housing. The rotating shaft is axially rotatably mounted on the first and second support bases. The cylindrical roller is sleeved on the rotating shaft between the first and second support bases. The conical pump head is sleeved on one end of the rotating shaft that extends out of the first support base.

[0039] A rotary drive unit, the output end of which is connected to the other end of the rotating shaft;

[0040] The outer walls of the conical pump head and the cylindrical roller can press against the purification main pipeline inserted from the mounting port, so that under the drive of the rotary drive unit, the purification main pipeline is pulled into the pipeline channel by the conical pump head, and the rotation and compression of the conical pump head and the cylindrical roller provide fluid flow power to the purification main pipeline in the pipeline channel.

[0041] Compared with the prior art, the blood purification device provided in this embodiment of the invention has the following main advantages:

[0042] This blood purification device achieves overall structural compactness through the rational arrangement of fluid flow pipelines, fluid flow control devices, display devices, and fluid replenishment devices mounted on the casing. While maintaining the original structure, a new mounting bracket is added. When the liquid level in the storage container is low, the bracket can be directly installed in the weighing chamber of the fluid replenishment device, and the storage container can be inverted onto the bracket. The remaining liquid can be quickly and completely drained by its own weight, avoiding waste, eliminating manual squeezing, improving replenishment efficiency, facilitating precise control of the replenishment rate, and ensuring operational safety. When the liquid level in the storage container is high, the mounting bracket can be removed, and the storage container can be placed directly in the weighing chamber, ensuring its safety and without additional space requirements for the blood purification device.

[0043] This blood purification device has a simple and reliable structure, is more flexible in use, has higher compatibility, and facilitates fluid replacement, which helps to improve the safety and ease of control during the patient's blood purification treatment. Attached Figure Description

[0044] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention or corresponding prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] in:

[0046] Figure 1 This is a three-dimensional structural schematic diagram of a blood purification device in one embodiment of the present invention;

[0047] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0048] Figure 3 This is a front view of the mounting bracket / support rod in one embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the working principle of a blood purification device in one embodiment of the present invention;

[0050] Figure 5 This is a simplified schematic diagram of the shell structure in one embodiment of the present invention;

[0051] Figure 6 This is a three-dimensional exploded view of a pressure detection device in one embodiment of the present invention;

[0052] Figure 7 This is a three-dimensional structural diagram of the pressure detection device in one state according to an embodiment of the present invention; in this diagram, the pressure member and the protrusion are circumferentially offset, and the pressure bladder assembly is in the open operation state.

[0053] Figure 8 This is a perspective structural diagram of the pressure detection device in another state according to one embodiment of the present invention; in this diagram, the pressure member and the protrusion are facing each other, and the pressure bladder assembly is in a tightened fixed installation state;

[0054] Figure 9 This is a front view of the pressure detection device in one state according to an embodiment of the present invention; in this figure, the pressure member and the protrusion are circumferentially offset, and the pressure bladder assembly is in the open operation state.

[0055] Figure 10 This is a perspective structural diagram of the pressure detection device in another state according to one embodiment of the present invention; in this diagram, the pressure member and the protrusion are facing each other, and the pressure bladder assembly is in a tightened fixed installation state;

[0056] Figure 11 This is a side view of the display device when it is closed in one embodiment of the present invention;

[0057] Figure 12 This is a side view of the hinge structure in one embodiment of the present invention when the display device is closed;

[0058] Figure 13 This is a side view of the display device when it is turned on in one embodiment of the present invention;

[0059] Figure 14 This is a side view of the hinge structure in one embodiment of the present invention when the display device is opened;

[0060] Figure 15 This is a simplified three-dimensional structural diagram of the hinge structure in one embodiment of the present invention when the display device is opened;

[0061] Figure 16 This is a three-dimensional structural diagram of the pump in one embodiment of the present invention;

[0062] Figure 17 This is a top view of the pump in one embodiment of the present invention;

[0063] Figure 18 This is a schematic cross-sectional view of the pump in one embodiment of the present invention;

[0064] Figure 19 This is a three-dimensional structural diagram of the pump after removing the housing, rotary drive unit and other components from one perspective in one embodiment of the present invention. The diagram mainly shows the three-dimensional structure of the extrusion roller.

[0065] Figure 20 yes Figure 19 A three-dimensional structural diagram of the pump from another perspective, which also mainly shows the three-dimensional structure of the extrusion rollers;

[0066] Figure 21 yes Figure 19 A schematic diagram of the longitudinal section of the pump, which mainly shows the internal structure of the extrusion rollers;

[0067] Figure 22 yes Figure 19 A schematic diagram of the cross-section at a certain location of the pump.

[0068] The labels in the attached diagram are as follows:

[0069] 100. Blood purification equipment;

[0070] 1. Housing; 11. Support; 12. Blood purification device; 13. Mounting position;

[0071] 2. Liquid flow pipeline; 21. Main purification pipeline; 22. Makeup branch pipeline;

[0072] 3. Liquid flow control device / pump; 31. Housing; 311. Piping channel; 3111. Liquid inlet; 3112. Liquid outlet; 32. End cover plate; 33. Mounting port; 34. Extrusion roller; 341. First support base; 342. Second support base; 343. Rotating shaft; 344. Cylindrical roller; 345. Conical pump head; 35. Rotary drive unit;

[0073] 4. Display device; 41. Display frame; 42. Display panel; 43. Mounting cavity; 44. Hinge structure; 441. First end frame; 442. Second end frame; 443. First support rod; 444. Second support rod; 445. First connector; 446. Second connector; 447. Third connector; 448. Fourth connector; 45. Rotation shaft;

[0074] 5. Liquid replenishment device; 51. Weighing assembly; 511. Tray; 512. Weighing chamber; 52. Mounting support / rod; 521. Rod; 522. Hook; 53. Liquid storage unit / storage bag; 54. Detachable structure; 541. Insert; 542. Insert;

[0075] 6. Pressure detection device; 61. Mounting assembly; 612. Mounting base; 613. Mounting platform; 6131. ​​First shaft hole; 614. Mounting frame; 6141. Second shaft hole; 6142. Protrusion; 61421. First step; 615. Threaded part; 62. Pressure sensor; 63. Pressure bladder assembly; 631. Bladder body; 632. Pressure element; 6321. Second step; 633. Pressure conduit;

[0076] 7. Vein reservoir; 8. Liquid level detector; 9. Bubble detector. Detailed Implementation

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are for ease of description only, and should not be construed as limiting the technical solution.

[0078] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion; the terms "first," "second," etc., used in the specification, claims, and accompanying drawings are used to distinguish different objects, not to describe a particular order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0079] In the description and claims of this invention and the foregoing drawings, when an element is referred to as "fixed to," "mounted to," "disposed on," or "connected to" another element, it can be located directly or indirectly on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0080] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0081] This invention provides a blood purification device 100, which is mainly used to perform blood purification treatment on patients to remove metabolic waste, toxins, various cytokines, inflammatory mediators, etc. from the body, as well as to correct electrolyte imbalances and ensure nutritional support. The blood purification methods may include, but are not limited to, hemodialysis, hemofiltration, hemoperfusion, plasma exchange, immunoadsorption, peritoneal dialysis, etc.

[0082] Understandably, when the blood purification device 100 is used in different blood purification treatment modes, the blood purification device 100 is a different model of blood purification device. For example, when the blood purification device 100 is used in the hemodialysis treatment mode, the blood purification device 12 is a dialyzer; when the blood purification device 100 is used in the plasma exchange mode, the blood purification device 12 is a plasma separator.

[0083] like Figure 1 and Figure 4 As shown, the blood purification device 100 includes a housing 1, a fluid flow pipeline 2, a fluid flow control device 3, a display device 4, and a fluid replenishment device 5. The housing 1 is configured as the main component of the blood purification device 100 and is mainly used to install various pumps, electronic components, and other parts.

[0084] In this embodiment, both the liquid pipeline and the liquid flow control device 3 are disposed in the housing 1. The liquid pipeline 2 includes a purification main pipeline 21 and a replenishment branch pipeline 22. The two ends of the purification main pipeline 21 are generally used to connect to arteries and veins, respectively, and the middle section of the purification main pipeline 21 is connected to the replenishment branch pipeline 22. In addition, the liquid flow control device 3 is connected to the middle section of the purification main pipeline 21 to control the flow of liquid in the purification main pipeline 21.

[0085] It should be noted that, to ensure the smooth flow of liquid within the entire liquid flow pipeline 2 as specified, the number of liquid flow control devices 3 can be determined according to actual needs. Correspondingly, the specific locations of the liquid flow pipeline 2 and the liquid flow control devices 3 within the housing 1 can also be determined according to actual conditions.

[0086] For example, in practical applications, such as Figure 4 As shown, the blood purification device 100 also includes a blood purification unit 12, a venous reservoir 7, a liquid level detector 8, and a bubble detector 9, etc., wherein the blood purification unit 12, the venous reservoir 7, the liquid level detector 8, and the bubble detector 9 are all directly or indirectly disposed in the housing 1. Figure 1 As shown, a bracket 11 is also provided on the outer periphery of the display device 4 and the housing 1. The bracket 11 is mainly used to hook medical record books, information record books and other items so that users can view or record relevant information about patients and equipment at any time.

[0087] In this embodiment, as Figure 1 As shown, for ease of operation and viewing, both the display device 4 and the fluid replenishment device 5 are located on the top of the housing 1. The display device 4 is mainly used to display relevant treatment parameters such as the fluid flow rate of the fluid flow pipeline 2; the fluid replenishment device 5 is mainly used to deliver the preset fluid to the purification main pipeline 21 as needed through the fluid replenishment branch 22. The preset fluid mentioned here can be a nutrient solution, a liquid containing disease treatment substances, etc., and can be configured according to the actual needs of different patients.

[0088] For example, such as Figure 4 As shown, the working principle of the blood purification device 100 can be roughly as follows:

[0089] Arterial blood can be output from one end of the purification main line 21 to the blood purification device 12. After purification by the blood purification device 12, the blood is replenished with target fluid by the fluid replenishment device 5 via the fluid replenishment branch line 22. The treated blood can then be returned to the patient's vein through the other end of the purification main line 21. The purification main line 21 before purification and the purification main line 21 after purification can be two interconnected lines.

[0090] In addition, to facilitate fluid replenishment and precise control of the fluid flow rate after replenishment, the preset fluid in the replenishment device 5 flows through the replenishment branch 22 and the purified blood flows through the purification main branch 21 to the venous reservoir 7. The fluid level in the venous reservoir 7 can be detected in real time by the level detector 8 near the venous reservoir 7. For example... Figure 4As shown, the purification main pipeline 21 used between the venous chamber 7 and the vein can be connected to the bubble detector 9 to detect whether there are bubbles in the purification main pipeline 21. It can also be connected to the heater (not shown) and the blood detector (not shown) to heat the treated liquid to the body temperature through the heater and to detect the flow rate of the treated liquid through the blood detector, so as to ensure the safe and stable delivery of blood to the vein, ensure the patient's comfort, and the recovery effect after treatment.

[0091] In this embodiment, as Figure 1 In the end Figure 3 As shown, the liquid replenishment device 5 includes a weighing component 51, a mounting bracket 52, and a liquid storage component 53. The weighing component 51 is disposed on the top of the housing 1 to enable the liquid replenishment device 5 to be mounted on the top of the housing 1. Specifically, a weighing chamber 512 is formed on the weighing component 51, and the liquid storage component 53 is mainly used to store a preset liquid. The weighing chamber 512 has the function of placing the liquid storage component 53, and also has the function of weighing the liquid storage component 53 itself and the preset liquid inside it.

[0092] For example, during purification treatment, the liquid storage device 53 can be directly placed in the weighing chamber 512. In this way, on the one hand, when the blood purification device 100 is moved, the liquid storage device 53 can move with the blood purification device 100, thereby simplifying the control process of the blood purification device 100 and making the operation very convenient; on the other hand, the weighing chamber 512 can detect the weight change of the liquid storage device 53 in real time, so as to obtain the flow rate of the preset liquid to be replenished based on the weight change, so as to directly and quickly obtain the fluid replenishment rate of the patient during the blood purification treatment, thereby facilitating the monitoring of the patient's blood purification treatment status and determining whether the treatment process is safe.

[0093] In this embodiment, as Figures 1 to 3 As shown, the mounting bracket 52 is detachably and vertically installed in the weighing chamber 512. Specifically, during the process of transporting the pre-set liquid in the liquid storage unit 53 to the purification main pipeline 21 via the replenishment branch 22, if the total weight of the liquid storage unit 53 is greater than the preset safe weight, the liquid storage unit 53 can be directly placed in the weighing chamber 512 without the need for the mounting bracket 52. When the total weight of the liquid storage unit 53 is less than or equal to the preset safe weight, the mounting bracket 52 can be installed in the weighing chamber 512, that is, ensuring that the mounting bracket 52 is installed in the weighing chamber 512, and the liquid storage unit 53 is placed upside down and vertically on the mounting bracket 52.

[0094] In short, when the liquid storage container 53 contains a small amount of pre-filled liquid, the mounting bracket 52 can be installed in the weighing chamber 512, and the liquid storage container 53 can be inverted and placed on the mounting bracket 52. When the liquid storage container 53 contains a large amount of pre-filled liquid and the mounting bracket 52 is not required, the mounting bracket 52 can be directly removed from the weighing chamber 512, and the liquid storage container 53 can be directly placed in the weighing chamber 512. This ensures smooth flow of the pre-filled liquid while also guaranteeing the safety of the liquid storage container 53. In conclusion, the liquid replenishment operation is convenient and quick, and with minimal modifications while maintaining existing operating habits, residual liquid in the liquid storage container 53 can be avoided, effectively solving the problem of incomplete drainage of pre-filled liquid.

[0095] In summary, compared with existing technologies, this blood purification device 100 has at least the following beneficial effects:

[0096] The blood purification device 100 achieves overall structural compactness by rationally arranging the liquid flow pipeline 2, liquid flow control device 3, display device 4, and replenishment device 5 installed on the housing 1. While maintaining the original structure, a new mounting bracket 52 is added. When the liquid storage container 53 contains a small amount of pre-set liquid, the mounting bracket 52 can be directly installed in the weighing chamber 512 of the replenishment device 5, and the liquid storage container 53 can be inverted onto the mounting bracket 52. The remaining pre-set liquid can be quickly and completely discharged by its own weight, avoiding waste, eliminating the need for manual squeezing, improving replenishment efficiency, facilitating precise control of the replenishment rate, and ensuring operational safety. When the liquid storage container 53 contains a large amount of pre-set liquid, the mounting bracket 52 can be removed, and the liquid storage container 53 can be directly placed in the weighing chamber 512, ensuring the safety of the liquid storage container 53 and not occupying additional space in the blood purification device 100.

[0097] The blood purification device 100 has a simple and reliable structure, is more flexible in use, has higher compatibility, and facilitates fluid replacement, which helps to improve the safety and ease of control during the patient's blood purification treatment.

[0098] To enable those skilled in the art to better understand the present invention, the following will be described in conjunction with the appendix. Figures 1 to 22 The technical solutions in the embodiments of the present invention will be clearly and completely described.

[0099] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, to facilitate the placement of the liquid storage unit 53, the weighing assembly 51 includes a tray 511, wherein a weighing cavity 512 is recessed on the top of the tray 511.

[0100] In one specific embodiment, when the liquid storage component 53 is a liquid storage bag, the mounting support 52 is a support rod with a hook portion 522 (see...). Figure 3 The hook 522 is mainly used for hanging the liquid storage bag upside down. Exemplarily, the support rod includes a rod portion 521 and a hook portion 522, wherein the top end of the rod portion 521 is connected to the hook portion 522, and the bottom end is detachably mounted to the tray 511 within the weighing chamber 512. When the amount of pre-set liquid in the storage bag is small, the bottom end of the support rod can be detachably mounted to the weighing chamber 512, and the storage bag can be hung upside down on the hook portion 522 at the top of the support rod, so that the weight of the pre-set liquid will drain all the remaining pre-set liquid, avoiding waste caused by incomplete drainage.

[0101] For example, in this embodiment, two trays 511 are provided, each tray 511 having a recessed weighing cavity 512, and each weighing cavity 512 can be equipped with a support rod. It should be noted that the load-bearing capacity, structure, size, etc. of the support rods configured on the two trays 511 can be the same or different, depending on actual needs, so as to facilitate the flexible selection of the corresponding tray 511 and support rod as needed.

[0102] Alternatively, in another specific embodiment, when the liquid storage component 53 is a liquid storage bottle (not shown), the mounting support can be a support (not shown) with a clamping part (not shown), wherein the clamping part is mainly used to clamp the inverted liquid storage bottle.

[0103] For example, when the amount of liquid in the storage bottle is low, the support can be detachably installed into the weighing chamber 512, and the inverted storage bottle can be clamped by the clamping part of the support, so that the weight of the liquid can be used to drain all the remaining liquid.

[0104] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, to facilitate the installation and removal of the mounting support 52, one end of the mounting support 52 is mounted on the tray 511 via a detachable structure 54 within the weighing chamber 512. It should be noted that the mounting support 52 can be installed on the wall or the bottom of the weighing chamber 512; no particular limitation is made here. For example, when the liquid storage component 53 is a liquid storage bag and the mounting support 52 is a support rod, the support rod is installed on the bottom of the weighing chamber 512.

[0105] Understandably, since the mounting bracket 52 is installed inside the weighing chamber 512, when the mounting bracket 52 is inverted with the liquid storage component 53, the weighing chamber 512 will bear the weight of the liquid storage component 53 and sense the weight change. Therefore, the weighing chamber 512 will still weigh the liquid storage component 53.

[0106] Specifically, in one embodiment, to facilitate the assembly and disassembly of the mounting bracket 52 and the tray 511, the aforementioned detachable structure 54 includes interlocking sockets 541 and inserts 542. One of the tray 511 and the mounting bracket 52 is provided with a socket 541, and the other with an insert 542. Understandably, if the mounting bracket 52 needs to be installed in the weighing chamber 512, simply ensure that the insert 542 and the socket 541 are correspondingly inserted, and the mounting bracket 11 can be installed on the tray 511 within the weighing chamber 512. If the bracket 52 does not need to be installed, simply pull the insert 542 out of the socket 541. Clearly, the installation operation of the mounting bracket 52 is very convenient.

[0107] For example, specifically in this embodiment, such as Figure 1 and Figure 2 As shown, the insertion hole 541 is located at the bottom of the weighing chamber 512 of the tray 511; as Figure 3 As shown, the plug 542 is located at the bottom end of the support rod. Preferably, the plug 542 is integrally formed with the support rod.

[0108] Alternatively, in another specific embodiment, in order to realize the assembly and disassembly of the mounting bracket 52 and the tray 511, the above-mentioned detachable structure 54 includes a first magnetic element (not shown) and a second magnetic element (not shown) that are magnetically attracted to each other. One of the tray 511 and the mounting bracket 52 is provided with the first magnetic element, and the other is provided with the second magnetic element.

[0109] Of course, in other specific embodiments, the above-mentioned detachable structure 54 can also be other suitable structures, such as existing structures or newly created detachable structures 54.

[0110] In some embodiments of the present invention, such as Figures 5 to 10 As shown, the blood purification device 100 also includes a pressure detection device 6, which is disposed on the front of the housing 1 (see Figure 1). Figure 5 During blood purification treatment, the pressure detection device 6 is mainly used to detect the pressure of the liquid in the purification main pipeline 21, so as to determine whether the patient's blood purification treatment process is in a safe state based on the liquid pressure.

[0111] Specifically in this embodiment, such as Figures 6 to 8As shown, the pressure detection device 6 includes a mounting assembly 61, a pressure sensor 62, and a pressure bladder assembly 63. The mounting assembly 61 has a hollow cavity (not shown) and an axially extending protrusion 6142 that can pass through and protrude from the hollow cavity. The pressure sensor 62 is axially mounted in the hollow cavity; the pressure bladder assembly 63 is disposed on the mounting assembly 61. It should be noted that the mounting assembly 61, pressure sensor 62, and pressure bladder assembly 63 are axially installed sequentially. At least one top end of the pressure sensor 62 is disposed on the mounting assembly 61, and the bottom end of the pressure bladder assembly 63 is inserted into the hollow cavity and abuts against the top end of the pressure sensor 62. The top end of the pressure bladder assembly 63 protrudes from the mounting assembly 61. It should also be noted that the axial direction referred to here is the height direction of the mounting assembly 61.

[0112] Specifically, such as Figure 6 As shown, the pressure bladder assembly 63 includes a bladder body 631 and multiple pressure members 632. The bottom of the bladder body 631 axially abuts against the top of the pressure sensor 62. The bladder body 631 is mainly used to sense the pressure change of the liquid flow in the purification main pipeline 21 and transmits the pressure change to the pressure sensor 62 through its own deformation, converting it into an electrical signal. Each pressure member 632 is circumferentially arranged on the bladder body 631.

[0113] It should be noted that the pressure sensor 62 can be made of a special metal material, which can convert minute pressure into electrical signals such as voltage and current for measuring the pressure within the pipeline. Additionally, pressure members 632 are circumferentially arranged on the bladder 631, allowing for easy manual simultaneous circumferential pressing of each pressure member 632 to deform the bladder 631. This allows the bottom end of the bladder 631 to pass through the hollow cavity of the mounting assembly 61, and when the pressure is released and the bladder 631 returns to its original state, it can be quickly and stably installed at the target position on the mounting assembly 61. Preferably, the pressure member 632 can be a long strip-shaped pressure block made of an elastic material, possessing a certain degree of elastic deformation capability. Furthermore, the bladder 631 is also made of an elastic material.

[0114] It should also be noted that the pressure bladder assembly 63 also includes a pressure conduit 633, which is disposed on the bladder body 631. When the pressure conduit 633 is connected to the purification main pipeline 21, the pressure conduit 633 can transmit the pressure variable of the blood to the bladder body 631. The bladder body 631 will deform accordingly according to the pressure variable, so as to have different degrees of contact with the pressure sensor 62. After the pressure sensor 62 senses the pressure deformation of the bladder body 631, it will convert this pressure deformation into an electrical signal of corresponding magnitude. According to the change in the amplitude of the electrical signal, the pressure change of the blood in the purification main pipeline 21 can be accurately reflected.

[0115] In this embodiment, as Figures 6 to 8As shown, when the pressure member 632 is radially pressed to insert the pressure bladder assembly 63 into the hollow cavity of the mounting assembly 61, and the pressure member 632 is rotated so that it is aligned with the protrusion 6142 before the radial pressing is released, the bottom end of the pressure bladder assembly 63 can be fixedly inserted into the hollow cavity, and the protrusion 6142 abuts radially against the pressure member 632 on its outer periphery. The pressure member 632 is axially connected to the protrusion 6142 through an axial limiting structure. When the pressure member 632 is rotated so that it is completely circumferentially misaligned with the protrusion 6142, and then the pressure member 632 is radially pressed, the pressure bladder assembly 63 can be withdrawn from the hollow cavity.

[0116] Understandably, such as Figure 8 As shown, when the pressure bladder assembly 63 is in a fixed installation state (see...) Figure 10 The pressure member 632 and the protrusion 6142 are directly opposite each other, and the protrusion 6142 and the pressure member 632 are radially abutted. In this way, the user can no longer press the pressure member 632 radially, avoiding the user accidentally touching the pressure member 632 and causing the pressure bladder assembly 63 to become loose from the mounting assembly 61, which would make the pressure bladder assembly 63 easy to pull out and cause abnormal detachment. This helps to ensure that the pressure bladder assembly 63 is not easily affected by external impact during the pressure detection process and remains unchanged, thereby ensuring the safety and stability of the pressure bladder assembly 63 and the pressure sensor 62 axially abutting, and the accuracy of the pressure sensor 62 sensing.

[0117] Understandably, since the pressure chamber assembly 63 is axially limited by an axial limiting structure after installation, preventing the pressure chamber assembly 63 from being easily pulled out or detached, the pressure chamber assembly 63 must be rotated before installation or removal to completely offset the pressure chamber assembly 63 and the protrusion 6142 circumferentially (see...). Figure 9 Then, insert the bottom end of the pressure bladder assembly 63 into the hollow cavity, or pull it out of the hollow cavity. In short, the pressure member 632 and the protrusion 6142 must be completely misaligned in the circumferential direction in order to complete the assembly and disassembly of the pressure bladder assembly 63.

[0118] Preferably, specifically in this embodiment, such as Figures 6 to 8 As shown, the aforementioned axial limiting structure includes a first step 61421 and a second step 6321 with an axially concave-convex fit. The first step 61421 is disposed on the inner wall of the protrusion 6142, and the second step 6321 is disposed on the outer wall of the pressure member 632. Understandably, the concave-convex fit of the first step 61421 and the second step 6321 ensures that the pressure member 632 is axially blocked and limited by the protrusion 6142, thereby preventing the pressure bladder assembly 63 from being axially pulled out after installation. This prevents the pressure bladder assembly 63 of the pressure detection device 6 from easily popping out of the housing 1 of the blood purification device 100, thus improving the overall structural stability and reliability.

[0119] In some embodiments of the present invention, such as Figures 6 to 8 As shown, to simplify the structure of the pressure detection device 6, the mounting assembly 61 includes a mounting base 612, a mounting platform 613, and a mounting frame 614. The mounting base 612 is mounted on the housing 1 and axially connected to the mounting platform 613. The mounting base 612 and the mounting platform 613 together form the aforementioned hollow cavity. The bottom end of the pressure sensor 62 is mounted on the mounting base 612 within the hollow cavity. For example, as... Figure 6 As shown, the mounting base 612 and the pressure sensor 62 are screwed and fixedly connected to the housing 1 by screws, bolts and other screws 615.

[0120] To facilitate the installation of the pressure bladder assembly 63 and to form the aforementioned hollow cavity, the mounting platform 613 has a first axial hole 6131; the mounting frame 614 has a hollow structure. Specifically, the mounting frame 614 has a second axial hole 6141 along its axial direction, and the first axial hole 6131 and the second axial hole 6141 communicate with each other. Furthermore, the mounting frame 614 is fitted onto the top of the pressure sensor 62 and has a circumferentially protruding protrusion 6142; the protrusion 6142 can pass through the first axial hole 6131 and protrude from the mounting platform 613. The pressure bladder assembly 63 can pass through the first axial hole 6131 and be installed on the mounting platform 613.

[0121] In some embodiments of the present invention, such as Figures 11 to 15 As shown, the display device 4 includes a display frame 41 and a display panel 42. The display frame 41 is vertically mounted on the top of the housing 1 and is mounted on the housing 1 via a rotating shaft 45 to adjust the orientation of the display device 4 as needed. Figure 11 and Figure 12 As shown, the display panel 42 covers the display frame 41, and a mounting cavity 43 is formed between the display panel 42 and the display frame 41. The hinge structure 44 is disposed in the mounting cavity 43 to be hidden within the mounting cavity 43 between the display frame 41 and the display panel 42.

[0122] In this embodiment, to allow the display panel 42 and the display frame 41 to rotate relative to each other and adjust the orientation of the display panel 42, the two ends of the hinge structure 44 are respectively connected to the inner sidewalls of the display panel 42 and the display frame 41 to hinge the display panel 42 and the display frame 41, allowing the display panel 42 and the display frame 41 to open or close relative to each other and supporting the display panel 42. Understandably, by installing the hinge structure 44 in the mounting cavity 43, the display panel 42 and the display frame 41 can be tightly closed, ensuring that there are no gaps at the point of contact, while ensuring that the display panel 42 can be opened relative to the display frame 41 as needed. During use after opening, the display panel 42 is supported by the hinge structure 44. Therefore, the display device 4 has a simple and reliable structure with good sealing performance.

[0123] Specifically in this embodiment, such as Figures 11 to 15 As shown, the hinge structure 44 includes a first end frame 441, a second end frame 442, a first support rod 443, and a second support rod 444. The first end frame 441 is fixedly installed on the inner wall of the display panel 42. Correspondingly, the second end frame 442 is fixedly installed on the inner wall of the display frame 41 at the bottom of the first end frame 441. The top end of the first support rod 443 is pivotally connected to the first end frame 441, and the bottom end is pivotally connected to the second end frame 442. Correspondingly, the top end of the second support rod 444 is pivotally connected to the first end frame 441, and the bottom end is pivotally connected to the second end frame 442. When the display panel 42 is opened or closed, both the first support rod 443 and the second support rod 444 can support the display panel 42.

[0124] It should be noted that the display device 4 utilizes a double-rod structure, such as the first support rod 443 and the second support rod 444, to achieve a hidden hinge function of the hinge structure 44 for the display panel 42 and the display frame 41 through the free rotation of the first support rod 443 and the second support rod 444 within the mounting cavity 43. This not only ensures that the display panel 42 can be freely opened or closed relative to the display frame 41, but also that the display device 4 is supported by the first support rod 443 and the second support rod 444 when the display panel 42 is open or closed, thereby improving the structural stability of the display device 4.

[0125] For example, such as Figure 12 and Figure 14 As shown, the aforementioned hinge structure 44 further includes a first connector 445, a second connector 446, a third connector 447, and a fourth connector 448. The top end of the first support rod 443 is pivotally connected to the first end frame 441 via the first connector 445, and the bottom end is pivotally connected to the second end frame 442 via the second connector 446. The first support rod 443 can rotate relative to the first end frame 441 around the first connector 445, and can also rotate relative to the second end frame 442 around the second connector 446. Correspondingly, the top end of the second support rod 444 is pivotally connected to the first end frame 441 via the third connector 447, and the bottom end is pivotally connected to the second end frame 442 via the fourth connector 448. The second support rod 444 can rotate around the third connector 447 relative to the first end frame 441, and can also rotate around the fourth connector 448 relative to the second end frame 442. This allows the display panel 42 to be opened or closed freely. During the opening or closing of the display panel 42, the bottom edge of the display panel 42 can move away from or closer to the display frame 41 relative to the display frame 41 through the support of the first support rod 443 and the second support rod 444, without interfering with the bottom edge of the display frame 41.

[0126] Specifically in this embodiment, such as Figure 15As shown, to simplify the structure of the display device 4 and ensure its stability and reliability, a hinge structure 44 is located on the bottom side of the display frame 41 within the mounting cavity 43. Two hinge structures 44 are provided, connecting the left and right sides of the display panel 42. That is, by installing two hinge structures 44 on the bottom inner side of the display device 4, the display panel 42 can be flipped open from the top to achieve the rotating and concealing function of the dual support rods, making operation convenient.

[0127] In some embodiments of the present invention, such as Figures 16 to 22 As shown, the fluid flow control device 3 is preferably a pump 3. Specifically, the pump 3 can be a peristaltic pump, but in other embodiments, it can also be other types of pumps. It should be noted that, as Figure 5 As shown, in order to better and more accurately control the flow of liquid in the liquid flow pipeline 2, the blood purification device 100 can usually be equipped with multiple pumps. Correspondingly, the housing 1 will be provided with multiple mounting positions 13, in which the pump 3 is installed on the housing 1 at the corresponding mounting position 13.

[0128] Specifically, in this embodiment, the pump 3 used in the fluid flow control device 3 can be used as a blood pump. Of course, in other embodiments, the pump used in the fluid flow control device 3 can also have a corresponding purpose in a specific location, and its specific structure can be an existing pump structure or a newly created structure.

[0129] For example, specifically in this embodiment, such as Figures 16 to 18 As shown, pump 3 includes a housing 31, an end cover plate 32, extrusion rollers 34, and a rotary drive unit 35. The housing 31 is disposed within the housing 1 and has a pipeline channel 311 for installing the main purification pipeline 21. Figure 17 and Figure 18 As shown, the pipeline channel 311 typically has an inlet 3111 and an outlet 3112. The pipeline installed in the pipeline channel 311 has one end extending out of the housing 31 from the inlet 3111 and the other end extending out of the housing 31 from the outlet 3112. The middle section is pressed into the pipeline channel 311.

[0130] For example, such as Figure 17 and Figure 18 As shown, the pipe channel 311 is preferably an arc-shaped bend. Correspondingly, the pipe installed within the pipe channel 311 is also installed in an arc-shaped bend. This reduces the resistance to liquid flow within the pipe, making the liquid flow smoother, more stable, and allowing for safer control of the liquid flow state via a pump.

[0131] Additionally, the end cover plate 32 is axially disposed on one side of the housing 31, and together with the housing 31, forms an adjustable mounting opening 33. It should be noted that the end cover plate 32 is primarily used to stop or release the main purification pipeline 21 located within the pipeline channel 311 from the mounting opening 33 side. For example, when the pipeline needs to be installed in the pipeline channel 311, the user needs to manually pull the end cover plate 32 outwards in the direction away from the housing 31 to enlarge the size of the mounting opening 33, then insert the pipeline into the pipeline channel 311, and then press the end cover plate 32 towards the housing 31 to press the pipeline into the pipeline channel 311 and prevent the pipeline from detaching from the mounting opening 33 within the pipeline channel 311.

[0132] In this embodiment, as Figure 16 As shown, to provide driving force to the liquid in the pipeline channel 311, and to control the flow velocity and direction of the liquid, the extrusion roller 34 is axially disposed in the housing 31, located within the inner perimeter of the pipeline channel 311. Specifically, as... Figure 16 , Figures 19 to 21 As shown, the extrusion roller 34 includes a first support 341, a second support 342, a rotating shaft 343, a cylindrical roller 344, and a conical pump head 345. The first support 341 and the second support 342 are axially spaced within the housing 31, and the rotating shaft 343 is axially rotatably mounted on the first support 341 and the second support 342. The cylindrical roller 344 is fitted between the first support 341 and the second support 342 and sleeved on the rotating shaft 343. The conical pump head 345 is sleeved on one end of the rotating shaft 343 extending from the first support 341. The output end of the rotary drive unit 35 is connected to the other end of the rotating shaft 343.

[0133] The outer walls of the conical pump head 345 and the cylindrical roller 344 can press against the purification main pipeline 21 inserted from the installation port 33, so that under the drive of the rotary drive unit 35, the purification main pipeline 21 is pulled into the pipeline channel 311 by the conical pump head 345, and the rotation and compression of the conical pump head 345 and the cylindrical roller 344 provide liquid flow power to the purification main pipeline 21 in the pipeline channel 311, so that the liquid in the pipeline flows at a certain speed and in a certain direction.

[0134] Understandably, the cylindrical roller 344 and the conical pump head 345 share a common shaft 343 for coaxial rotation, and since they are axial, there is an axial clearance. The first support 341 provides stable support for the coaxial rotation of both the cylindrical roller 344 and the conical pump head 345, and the second support 342 also provides support for both the cylindrical roller 344 and the conical pump head 345. In this way, by supporting the rotating shaft 343 at different positions of the first support seat 341 and the second support seat 342, the extrusion roller 34 obtains greater support force, which helps to improve the support stability of the rotating shaft 343 and avoids the cylindrical roller 344 and the conical pump head 345 from generating large tensile forces due to their respective excessive centrifugal forces during coaxial rotation. This avoids the problem of the extrusion roller 34 disintegrating under stress during the rotation of the conical pump head 345 and the cylindrical roller 344, thereby improving the reliability of the extrusion roller 34 structure during rotation.

[0135] Understandably, because the conical pump head 345 is conical in shape, on the one hand, when the pump head rotates and squeezes the pipeline, the conical pump head 345 can provide an inward driving force for the pipeline, which can prevent the pipeline from falling off the pipeline channel 311; on the other hand, when installing the pipeline into the pipeline channel 311, simply place the pipeline near the conical pump head 345 in the housing 31 through the installation port 33, and then rotate the pump head. At this time, the conical pump head 345 will generate a pulling force on the pipeline it is in contact with, so as to pull the pipeline into the pipeline channel 311, thereby limiting the installation of the pipeline, so that the pipeline can be installed more smoothly and conveniently in the pipeline channel 311.

[0136] For example, both the first support 341 and the second support 342 are plate parts. To further improve the structural stability and reliability of the extruded roller, the first support 341 and the second support 342 are connected by an axial intermediate connector (not shown) to provide a more stable support force.

[0137] In some embodiments of the present invention, at least two extrusion rollers 34 are provided, for example, such as Figure 19 and Figure 22 As shown, three extrusion rollers 34 are provided. Each extrusion roller 34 is arranged at a different position along the pipeline channel 311 so that the extrusion roller 34 can periodically extrude different positions in the pipeline, so that the extrusion position moves forward continuously along the liquid travel direction, thereby achieving the pumping purpose, and finally enabling the liquid in the purification main pipeline 21 to flow according to the target flow rate and target flow direction.

[0138] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A blood purification device, characterized in that, The blood purification device includes: case; A fluid flow pipeline is disposed on the housing; the fluid flow pipeline includes a purification main pipeline, the two ends of which are respectively used to connect an artery and a vein; A liquid flow control device is installed on the housing and connected to the middle section of the main purification pipeline to control the flow of liquid in the main purification pipeline. A display device is disposed on the top of the housing; and A liquid replenishment device, located at the top of the housing, is used to deliver a preset liquid to the main purification pipeline as needed; The fluid replenishment device includes: A weighing assembly is disposed on the top of the housing; a weighing chamber is formed on the weighing assembly; The mounting bracket is detachably and vertically installed in the weighing chamber; and Liquid storage unit, used to store a preset liquid; During the process of transporting the preset liquid to the purification main pipeline, when the total weight of the liquid storage component is greater than the preset safe weight, the liquid storage component is placed in the weighing chamber; when the total weight of the liquid storage component is less than or equal to the preset safe weight, the mounting support is installed in the weighing chamber, and the liquid storage component is installed upside down and vertically on the mounting support.

2. The blood purification device according to claim 1, characterized in that, The weighing assembly includes a tray, and the weighing chamber is recessed on the top of the tray; When the liquid storage device is a liquid storage bag, the mounting support is a support rod with a hook; the hook is used to hang the liquid storage bag upside down. Alternatively, when the liquid storage component is a liquid storage bottle, the mounting support is a support with a clamping part; the clamping part is used to clamp the inverted liquid storage bottle.

3. The blood purification device according to claim 2, characterized in that, Inside the weighing chamber, one end of the mounting support is mounted on the tray via a detachable structure.

4. The blood purification device according to claim 3, characterized in that, The detachable structure includes interlocking sockets and plugs, wherein one of the tray and the mounting bracket is provided with the socket and the other is provided with the plug; Alternatively, the detachable structure includes a first magnetic element and a second magnetic element that attract each other magnetically, with one of the tray and the mounting bracket having the first magnetic element and the other having the second magnetic element.

5. The blood purification device according to any one of claims 1 to 4, characterized in that, The blood purification equipment also includes a pressure detection device, which is disposed on the housing and used to detect the pressure of the liquid in the purification main pipeline; The pressure detection device includes: The mounting assembly has a hollow cavity and an axially extending protrusion; the protrusion passes through the hollow cavity and is exposed outside the hollow cavity; A pressure sensor is axially mounted in the hollow cavity; and A pressure bladder assembly is disposed on the mounting assembly; the pressure bladder assembly includes a bladder body and multiple pressure members, the bottom of the bladder body axially abutting against the top of the pressure sensor; the bladder body is used to sense the pressure change of the liquid flow in the purification main pipeline, and transmits the pressure change to the pressure sensor through its own deformation, converting it into an electrical signal; each of the pressure members is circumferentially disposed on the bladder body; When the pressure member is pressed radially to insert the pressure bladder assembly into the hollow cavity, and the pressure member is rotated to make the pressure member face the protrusion before the radial pressing is released, the bottom end of the pressure bladder assembly can be fixedly inserted into the hollow cavity, and the protrusion abuts radially against the pressure member on the periphery of the pressure member, and the pressure member is connected to the protrusion through an axial limiting structure; When the pressure member is rotated to completely offset it circumferentially from the protrusion, and then the pressure member is pressed radially, the pressure bladder assembly can be extracted from the hollow cavity.

6. The blood purification device according to claim 5, characterized in that, The installation components include: Mounting base, mounted on the housing, with the pressure sensor mounted at the bottom; The mounting platform has a first shaft hole; the mounting platform is axially connected to the mounting base, and the two together form the hollow cavity; The mounting frame has a hollow structure; the mounting frame is sleeved on the top of the pressure sensor and has a circumferentially protruding protrusion; the protrusion can pass through the first shaft hole and protrude from the mounting platform; The pressure bladder assembly can pass through the first shaft hole and be installed on the mounting platform; And / or, the axial limiting structure includes a first step and a second step that fit together axially, the first step being disposed on the inner wall of the protrusion and the second step being disposed on the outer wall of the pressure member.

7. The blood purification device according to any one of claims 1 to 4, characterized in that, The display device includes: The display frame is vertically mounted on the top of the housing; The display panel is fitted onto the display frame and a mounting cavity is formed between the display panel and the display frame; A hinged structure is provided within the mounting cavity; The hinge structure has two ends connected to the inner sidewalls of the display panel and the display frame, respectively, to hinge the display panel and the display frame, so that the display panel and the display frame can be opened or closed relative to each other, and to support the display panel.

8. The blood purification device according to claim 7, characterized in that, The hinge structure includes: The first end bracket is fixedly installed on the inner wall of the display panel; The second end frame is fixedly installed on the inner wall of the display frame at the bottom of the first end frame; The first support rod is pivotally connected at its top end to the first end frame and at its bottom end to the second end frame; The second support rod is pivotally connected at its top to the first end frame and at its bottom to the second end frame; When the display panel is open or closed, both the first support rod and the second support rod can support the display panel.

9. The blood purification device according to claim 8, characterized in that, Within the mounting cavity, the hinge structure is located on the bottom side of the display frame; and two hinge structures are provided, with the two hinge structures connected to the left and right sides of the display panel.

10. The blood purification device according to any one of claims 1 to 4, characterized in that, The fluid flow control device is a pump; the pump includes: A base is disposed in the housing and is provided with a pipeline channel for the installation of the main purification pipeline; An end cover plate is axially disposed on one side of the housing and together with the housing forms an adjustable mounting opening; An extrusion roller is axially disposed within the housing and located inside the pipeline channel. The extrusion roller includes a first support base, a second support base, a rotating shaft, a cylindrical roller, and a conical pump head. The first and second support bases are axially spaced within the housing. The rotating shaft is axially rotatably mounted on the first and second support bases. The cylindrical roller is sleeved on the rotating shaft between the first and second support bases. The conical pump head is sleeved on one end of the rotating shaft that extends out of the first support base. A rotary drive unit, the output end of which is connected to the other end of the rotating shaft; The outer walls of the conical pump head and the cylindrical roller can press against the purification main pipeline inserted from the mounting port, so that under the drive of the rotary drive unit, the purification main pipeline is pulled into the pipeline channel by the conical pump head, and the rotation and compression of the conical pump head and the cylindrical roller provide fluid flow power to the purification main pipeline in the pipeline channel.

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