Hemodialysis machine

Abstract

This invention discloses a hemodialysis machine, including a dialysis machine body and a dialyzer support. The dialyzer support includes a connecting mounting base, a cylinder I, a motor I, a left support plate, and a right support plate. One end of the connecting mounting base is connected to the front side of the dialysis machine body, the cylinder I is fixed to the other end of the connecting mounting base, and the motor I is fixedly connected to the piston rod of the cylinder I. The concave arc surfaces of the left and right support plates correspond to each other, and the power output shaft of the motor I is fixedly connected to the left side of the left support plate. The left and right support plates are equipped with a clamping mechanism for clamping the dialyzer and a vibration mechanism for vibrating the dialyzer. This hemodialysis machine achieves automatic dialyzer rotation, automatic dialyzer tilting, and automatic dialyzer vibration, thereby achieving automatic air venting and impurity removal, greatly reducing manual operation, reducing the chance of contact with the equipment, and lowering the risk of infection from manual operation.

Description

Technical Field

[0001] This invention relates to the field of hemodialysis technology, and more specifically to a hemodialysis machine. Background Technology

[0002] Air embolism is a potentially serious complication during hemodialysis. It occurs when air enters the body and causes blockage of blood vessels. While rare, air embolism during dialysis can lead to severe consequences if not managed properly. Air can travel through veins to the right ventricle, where it churns in the blood, creating foam that severely obstructs arterial blood flow to the right ventricle and lungs, potentially causing acute right heart failure and even death. Small amounts of air bubbles can also enter the systemic circulation through arteriovenous anastomoses in the lungs, reaching the heart, brain, and kidneys, potentially causing embolisms in these vital organs.

[0003] One of the main causes of air embolism in hemodialysis is improper technique, specifically failing to pre-flush the dialyzer before connecting it to the venous puncture needle. Before initiating dialysis, the dialyzer must be pre-flushed and purged. This step aims to remove air and impurities, ensuring smooth blood flow within the hollow fiber filaments. During pre-flushing, the principle of "low-speed perfusion, high-speed flushing" should be followed to thoroughly humidify the dialyzer, thereby reducing the risk of clotting or dialysis membrane reactions. Strict aseptic techniques must be adhered to when using the dialyzer. Aseptic techniques should be used during connection to minimize the risk of infection.

[0004] In existing technology, a rotatable bracket is installed on the front side of the dialysis machine body. The dialyzer is inserted into the bracket with the venous end of the dialyzer facing upwards. The dialysis venous tubing is connected to the venous end of the dialyzer. The bracket is manually rotated, and then the dialysis arterial tubing is connected to the arterial end of the dialyzer. The bracket is then manually reversed, so that the venous end of the dialyzer returns to the top. When the dialyzer is pre-flushing and venting operations begin, the pre-flushing fluid enters the dialyzer from the arterial end at the bottom and exits from the venous end at the top, thereby expelling gas and impurities from the dialyzer membrane. In order to... To better remove gas and impurities from the dialyzer membrane, the operator needs to tap the dialyzer or remove it and rub it to expel the gas from the membrane. Then, connect the bypass port on the side wall of the dialyzer to the bypass tubing, and manually rotate the support again so that the arterial end of the dialyzer is higher than the venous end. The dialysate enters the dialyzer from the bottom bypass tubing and exits from the top bypass tubing, thus rinsing the outside of the dialyzer membrane. After the pre-rinse, connect the other end of the dialysis arterial tubing and dialysis venous tubing to the patient's arterial and venous puncture needles, and dialysis can begin.

[0005] As can be seen from the existing pre-flushing of dialyzers, the inversion, tilting, and tapping of the dialyzer are all manual operations. The entire operation requires manual intervention to completely remove impurities and gases from inside and outside the dialyzer membrane. This depends entirely on whether the medical staff operates in a standardized and careful manner. If the operation is careless or interrupted, impurities and gases from inside and outside the dialyzer membrane may not be completely removed, which may lead to the risk of embolism. At the same time, manual inversion, tilting, and tapping require the hands to come into contact with different parts of the dialyzer and stent at different times, which may bring the risk of infection to the subsequent connection of the human veno-veno-invasive puncture needle connector. Summary of the Invention

[0006] To address the shortcomings of the existing technology, the present invention provides a hemodialysis machine that reduces manual operation and can automatically flip, tilt, and vibrate the dialyzer.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A hemodialysis machine includes a dialysis machine body and a dialyzer support. The dialyzer support is mounted on the dialysis machine body and includes a connecting mounting base, cylinder I, motor I, a left support plate, and a right support plate. One end of the connecting mounting base is detachably connected to the front side of the dialysis machine body, and the other end of the connecting mounting base extends outward from the front side of the dialysis machine body. Cylinder I is fixed to the other end of the connecting mounting base, and the piston rod of cylinder I extends horizontally towards the left side of the dialysis machine body. Motor I is fixedly connected to the piston rod of cylinder I. The power output shaft of motor I is horizontally positioned. Both the left and right support plates are arc-shaped plates with corresponding concave arc surfaces. The rear ends of the left and right support plates are hinged together, and the front ends of the left and right support plates form the dialyzer insertion end. The power output shaft of motor I is fixedly connected to the left side of the left support plate. The left and right support plates are equipped with clamping mechanisms to clamp the dialyzer, and they are also equipped with vibration mechanisms to vibrate the dialyzer.

[0009] In a preferred embodiment of the present invention, the vibration mechanism includes a left vibration mechanism installed in the middle of the inner side of the left support plate and a right vibration mechanism installed in the middle of the inner side of the right support plate. Both the left and right vibration mechanisms include a cylinder II, a guide cylinder with one open end, a vibration spring, a vibration plate, and a vibration motor. The middle of both the left and right support plates is provided with cylinder II mounting holes. The cylinder II on the left side is fixedly installed in the cylinder II mounting hole on the left support plate, and the cylinder II on the right side is fixedly installed in the cylinder II mounting hole on the right support plate. The piston rod of the cylinder II faces inwards, and the guide cylinder... The cylinder is fixedly connected to the piston rod of cylinder II. One end of the vibration spring is fixedly connected to the inner end wall of the guide cylinder, and the other end of the vibration spring extends out of the open end of the guide cylinder and is fixedly connected to the vibration plate. The outer diameter of the guide cylinder is smaller than the inner diameter of the mounting hole of cylinder II. The vibration plate is an arc-shaped plate. The concave arc surfaces of the left and right vibration plates correspond to each other. The left and right vibration plates are used to clamp the dialyzer during vibration. The vibration motor of the left side is installed at the bottom left side of the left vibration plate, and the vibration motor of the right side is installed at the top right side of the right vibration plate.

[0010] In a preferred embodiment of the present invention, clamping mechanisms are installed on the inner sides of the left support plate near the upper and lower sides, and on the inner sides of the right support plate near the upper and lower sides. Each clamping mechanism includes a clamping cylinder III and a clamping plate. Cylinder III mounting holes are provided on the inner sides of the left support plate near the upper and lower sides, and on the inner sides of the right support plate near the upper and lower sides. Each cylinder III mounting hole is equipped with a clamping cylinder III. The piston rod of the clamping cylinder III faces inward, and the piston rod of the clamping cylinder III is fixedly connected to the clamping plate. The clamping plate is an arc-shaped plate. The clamping plates on the inner sides of the left support plate near the upper side and the clamping plates on the inner sides of the right support plate near the upper side form a set of dialyzer clamping plates. The clamping plates on the inner sides of the left support plate near the lower side and the clamping plates on the inner sides of the right support plate near the lower side form another set of dialyzer clamping plates.

[0011] In a preferred embodiment of the present invention, the rear ends of the left and right support plates are hinged to each other by a positioning and rotating mechanism. The positioning and rotating mechanism includes a rotating shaft and a torsion spring. The rear end of the left support plate is provided with at least two grooves near its inner side, and the rear end of the right support plate is provided with a number of protrusions equal to the number of grooves and cooperating with each other near its inner side. The rear end of the left support plate and the protrusions are provided with through holes I. The protrusions on the rear end of the right support plate are located in the corresponding grooves on the rear end of the left support plate. The rotating shaft passes through the through holes I on the rear end of the left support plate and the through holes I on the protrusions. A torsion spring is sleeved on the rotating shaft in each groove and at both ends of the corresponding protrusion. One end of the torsion spring is fixedly connected to the side wall of the corresponding groove, and the other end of the torsion spring is fixedly connected to the corresponding protrusion. When the torsion spring is in its natural state, the snap-fit ​​ends of the front ends of the left and right support plates are close to each other.

[0012] As a preferred embodiment of the present invention, elastic pads are provided on the inner sides of both the vibrating plate and the clamping plate. A pressure sensor and an tilt sensor are installed on the inner side of each elastic pad. The pressure sensor and the tilt sensor are both electrically connected to the controller inside the dialysis machine body. The cylinder I, motor I, cylinder II and clamping cylinder III are all controlled by the controller inside the dialysis machine body.

[0013] As a preferred embodiment of the present invention, a support base is provided on the lower part of the left side wall of the dialysis machine body, and a support arm is provided on the upper part of the left side wall of the dialysis machine body. The support base is provided with an insertion port, and the support arm is provided with a through hole II. The support rod of the infusion stand passes through the through hole II on the support arm, and the bottom of the support rod is inserted into the insertion port on the support base. The distance between the clamping center formed by the left support plate and the right support plate and the support rod is greater than half the length of the dialyzer.

[0014] In a preferred embodiment of the present invention, the connecting mounting base includes an insertion section and an external section. The insertion section has a rectangular cross-section, and slots are provided on all four sides of the insertion section. A rectangular mounting hole is provided on the front side and near the left side of the dialysis machine body. Each surface of the inner wall of the mounting hole has a circular hole corresponding to the slot. The circular hole consists of a smaller diameter circular hole segment I near the inner side and a larger diameter circular hole segment II near the outer side. A limiting mechanism is installed in each circular hole. The limiting mechanism includes a cylinder IV, a limiting plate, a guide sleeve, a limiting block, a limiting spring, and a pull rope. The cylinder IV is installed in the circular hole segment I, and the limiting plate is engaged in the circular hole segment II and rests against the step formed between the circular hole segment I and the circular hole segment II. A limiting hole is provided in the middle of the limiting plate. The guide sleeve passes through the limiting hole and slides in cooperation with it. The limiting block is set in the circular hole section II and slides in cooperation with the inner wall of the circular hole section II. The inner end of the limiting block is fixedly connected to the outer end of the guide sleeve. The piston rod of the cylinder IV extends to the inner end of the guide sleeve. The limiting spring is sleeved outside the guide sleeve and located between the limiting block and the limiting plate. One end of the limiting spring is fixed to the inner end of the limiting block, and the other end is fixed to the limiting plate. The pull rope passes through the guide sleeve. One end of the pull rope is fixedly connected to the inner end of the limiting block, and the other end is fixedly connected to the piston rod of the cylinder IV. The insertion section is inserted into the mounting hole, and the outer end of the limiting block is inserted into the corresponding slot.

[0015] In a preferred embodiment of the present invention, the cylinder IV is controlled by a controller within the dialysis machine body.

[0016] In a preferred embodiment of the present invention, the vibration spring is a hollow spring, and the power cord passes through the hollow cavity of the vibration spring. One end of the power cord is connected to the power supply inside the dialysis machine body, and the other end of the power cord is connected to the vibration motor on the corresponding side.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This hemodialysis machine features automatic dialyzer rotation, automatic dialyzer tilting, and automatic dialyzer vibration, thereby achieving automatic air venting and impurity removal. This greatly reduces manual operation and the chance of contact with the equipment, lowering the risk of infection from manual operation. This hemodialysis machine can effectively prevent air embolism during hemodialysis, safeguarding the health and safety of patients.

[0019] 2. When using this hemodialysis machine, insert the dialyzer between the left and right support plates. The controller controls the piston rod of cylinder II to extend, and the piston rod drives the guide sleeve to move towards the center, thereby driving the vibration spring and vibration plate to approach the dialyzer together. The elastic pads on the inner sides of the left and right vibration plates press against the left and right sides of the dialyzer and hold the dialyzer. Turn on the vibration motors on the left and right sides. At the same time, motor I drives the dialyzer to tilt. The tilt angle of the dialyzer is detected by the tilt sensor on the inner elastic pad of the vibration plate, which facilitates precise control of the dialyzer's tilt angle. When the pre-flushing fluid passes through the dialyzer, the vibration motors of the left and right support plates are at different heights. Under the synergistic effect of motor I driving the dialyzer to tilt, the dialyzer moves in multiple dimensions. Driven by the pre-flushing fluid, the air and impurities attached to the inner wall of the dialyzer and the fiber membrane inside the dialyzer can be quickly removed and discharged. After the dialyzer is tilted, it is also convenient for the gas and impurities attached to the top of the dialyzer to be discharged through the venous end or bypass tubing.

[0020] 3. Before starting dialysis, the dialyzer holder needs to be installed in the mounting hole of the dialysis machine body. The controller controls the piston rod of cylinder I to extend to the left side of the dialysis machine body, driving motor I, left support plate, right support plate, clamping mechanism and vibration mechanism to move to the left together, so that the left and right support plates are outside the left side of the dialysis machine body. Then, insert the dialyzer between the left and right support plates, so that the interface end of the bypass line on the dialyzer faces left, which corresponds to the bypass line on the left side wall of the dialysis machine body, making it easy to connect to the bypass line. The controller controls the piston rod of cylinder III to extend, driving the clamping plate closer to the left side of the machine body. The dialyzer is held in place by elastic pads on the inner sides of the clamping plates on both sides. The dialyzer is held in place by two sets of upper and lower clamping plates. Pressure sensors on the elastic pads detect the clamping force of the clamping plates, allowing control of the clamping force. The venous tubing is then connected to the venous end of the dialyzer. After the venous end is connected, the controller controls motor I to rotate, causing the dialyzer to flip downwards and forwards. The arterial tubing is then connected to the arterial end of the dialyzer, and motor I rotates the dialyzer back to its original position. The tilting and flipping of the entire dialyzer is automatically controlled. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a hemodialysis machine;

[0022] Figure 2 This is a front view of the dialyzer stand;

[0023] Figure 3 This is a top view of the dialyzer support;

[0024] Figure 4 This is a schematic diagram of the structure of the dialyzer being inserted into the dialyzer holder on the hemodialysis machine;

[0025] Figure 5 This is a cross-sectional structural diagram showing the clamping mechanism and vibration mechanism installed inside the left and right support plates;

[0026] Figure 6 This is a structural schematic diagram of the left support plate;

[0027] Figure 7 This is a structural schematic diagram of the right support plate;

[0028] Figure 8 This is a schematic diagram of the structure of the positioning and rotating mechanism cooperating with the right support plate;

[0029] Figure 9 This is a schematic diagram of a structure in which a pressure sensor and a tilt sensor are mounted on an elastic pad.

[0030] Figure 10 This is a cross-sectional structural diagram of the connecting mounting base;

[0031] Figure 11 This is a schematic diagram of the structure with mounting holes and round holes on the main body of the dialysis machine;

[0032] Figure 12 This is a cross-sectional diagram of the insertion section of the mounting base being inserted into the mounting hole on the main body of the dialysis machine.

[0033] Figure 13 yes Figure 12 Enlarged structural diagram at point A in the middle.

[0034] In the diagram: 1—Dialysis machine body; 11—Support base; 12—Support arm; 13—Mounting hole; 14—Round hole; 2—Dialyzer bracket; 21—Connecting mounting base; 211—Insertion section; 212—External section; 213—Slot; 22—Cylinder I; 23—Motor I; 24—Left support plate; 25—Right support plate; 26—Clamping mechanism; 261—Clamping cylinder III; 262—Clamping plate; 263—Cylinder III mounting hole; 27—Vibration mechanism; 271—Cylinder II; 272—Guide... 273—Vibration spring; 274—Vibration plate; 275—Vibration motor; 276—Cylinder II mounting hole; 28—Rotating shaft; 29—Torsion spring; 3—Dialyzer; 30—Groove; 31—Protrusion; 32—Through hole I; 33—Spring pad; 34—Pressure sensor; 35—Tilt sensor; 4—Infusion stand; 41—Support rod; 5—Limiting mechanism; 51—Cylinder IV; 52—Limiting plate; 53—Guide sleeve; 54—Limiting block; 55—Limiting spring; 56—Pull rope. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the embodiments and accompanying drawings.

[0036] like Figure 1 As shown, the hemodialysis machine includes a dialysis machine body 1, a dialyzer support 2, an infusion stand 4, and a limiting mechanism 5. The dialyzer support 2 is installed on the front side of the dialysis machine body 1 and near the left side, while the infusion stand 4 is located on the left side of the dialysis machine body 1.

[0037] The dialyzer support 2 includes a connecting mounting base 21, a cylinder I 22, a motor I 23, a left support plate 24, and a right support plate 25, as follows: Figure 2 and Figure 3As shown. One end of the connecting mounting base 21 is detachably connected to the front side of the dialysis machine body 1 and close to the left side of the dialysis machine body 1. The other end of the connecting mounting base 21 extends outward to the front side of the dialysis machine body 1. Cylinder I 22 is fixedly connected to the other end of the connecting mounting base 21. The piston rod of cylinder I 22 extends horizontally to the left side of the dialysis machine body 1. Motor I 23 is fixedly connected to the piston rod of cylinder I 22. The power output shaft of motor I 23 faces the left side of the dialysis machine body 1 and is horizontally positioned. The left support plate 24 and the right support plate 25 are both arc-shaped plates. The concave arc surfaces of the left support plate 24 and the right support plate 25 correspond to each other, and the left support plate 24 and the right support plate 25 form an outer support ring. The rear ends of the left support plate 24 and the right support plate 25 are hinged together by a positioning and rotating mechanism. The front ends of the left support plate 24 and the right support plate 25 form the insertion end of the dialyzer 3. The insertion end has a V-shaped structure that opens forward and to both sides, facilitating the insertion of the dialyzer 3 between the left support plate 24 and the right support plate 25. The power output shaft of the motor I 23 is fixedly connected to the left side of the left support plate 24. The left support plate 24 and the right support plate 25 are equipped with a clamping mechanism 26 for clamping the dialyzer 3, and a vibration mechanism 27 for vibrating the dialyzer 3. When the dialyzer 3 is inserted into the outer support ring formed by the left support plate 24 and the right support plate 25 through the insertion end, the clamping mechanism 26 in the left support plate 24 and the right support plate 25 can clamp the dialyzer 3. Figure 4 As shown, at this time, the motor I 23 rotates, which can drive the left support plate 24 and the right support plate 25, as well as the clamping mechanism 26, the vibration mechanism 27 and the dialyzer 3 inside them, to flip and tilt. When flipping, the venous end of the dialyzer 3 can be flipped to the bottom and the arterial end of the dialyzer 3 can be flipped to the top, which is convenient for connecting the arterial catheter. When the vibration mechanism 27 clamps the dialyzer 3, the vibration mechanism 27 is turned on, and with the synergistic effect of the motor I 23 driving the dialyzer 3 to tilt, the air and impurities in the dialyzer 3 can be completely and effectively expelled.

[0038] The vibration mechanism 27 includes a left vibration mechanism installed in the middle of the inner side of the left support plate 24 and a right vibration mechanism installed in the middle of the inner side of the right support plate 25, such as... Figure 5 As shown, both the left and right vibration mechanisms include a cylinder II 271, a guide cylinder 272 with one open end, a vibration spring 273, a vibration plate 274, and a vibration motor 275. The left support plate 24 and the right support plate 25 both have cylinder II mounting holes 276 in their middle sections, as shown... Figure 6 and Figure 7As shown, the cylinder II 271 on the left is fixedly installed in the cylinder II mounting hole 276 of the left support plate 24, and the cylinder II 271 on the right is fixedly installed in the cylinder II mounting hole 276 of the right support plate 25. The piston rod of the cylinder II 271 faces inward (that is, the piston rod of the cylinder II 271 faces the middle between the left support plate 24 and the right support plate 25). The guide cylinder 272 is fixedly connected to the piston rod of the cylinder II 271. One end of the vibration spring 273 is fixedly connected to the inner end wall of the guide cylinder 272, and the other end of the vibration spring 273 extends out of the open end of the guide cylinder 272 and is fixedly connected to the vibration plate 274. The outer diameter of the guide cylinder 272 is smaller than the inner diameter of the cylinder II mounting hole 276. The vibration plate 274 is an arc-shaped plate. The concave arc surfaces of the left vibration plate 274 and the right vibration plate 274 correspond to each other. The left vibration plate 274 and the right vibration plate 274 are used to clamp the dialyzer 3 during vibration. The left vibration motor 275 is installed at the bottom left side of the left vibration plate 274, and the right vibration motor 275 is installed at the top right side of the right vibration plate 274. When dialyzer 3 is placed between the left support plate 24 and the right support plate 25, the piston rods of cylinders II 271 on the left and right support plates 24 and 25 extend, driving the guide cylinder 272 to move towards the center. This drives the vibration spring 273 and the vibration plate 274 to approach and press against dialyzer 3. The vibration plates 274 on both sides press against and clamp dialyzer 3. At this time, the vibration motors 275 on both sides are turned on. Simultaneously, motor I 23 drives dialyzer 3 to tilt, pre- When the flushing fluid passes through the dialyzer 3, the vibration motors 275 on the left support plate 24 and the right support plate 25 are at different heights. Under the synergistic effect of the motor I 23 driving the dialyzer 3 to tilt, the dialyzer 3 moves in multiple dimensions. Driven by the pre-flushing fluid, the air and impurities attached to the inner wall of the dialyzer 3 and the fiber membrane inside the dialyzer 3 can be quickly removed and discharged. Moreover, after the dialyzer 3 is tilted, it is also convenient for the gas and impurities attached to the top of the dialyzer 3 to be discharged through the venous end or the bypass line.

[0039] Clamping mechanisms 26 are installed on the inner side of the left support plate 24 near the top and bottom sides, and on the inner side of the right support plate 25 near the top and bottom sides. Each clamping mechanism 26 includes a clamping cylinder Ⅲ 261 and a clamping plate 262. Figure 5 As shown. Cylinder III mounting holes 263 are provided on the inner side of the left support plate 24 near the top and bottom sides, and on the inner side of the right support plate 25 near the top and bottom sides, as shown. Figure 6 and Figure 7As shown, each cylinder III mounting hole 263 is equipped with a clamping cylinder III 261. The piston rod of the clamping cylinder III 261 faces inward (i.e., the piston rod of the clamping cylinder III 261 faces the middle between the left support plate 24 and the right support plate 25), and the piston rod of the clamping cylinder III 261 is fixedly connected to a clamping plate 262. The clamping plate 262 is an arc-shaped plate. The clamping plate 262 on the inner side of the left support plate 24 near the upper side and the clamping plate 262 on the inner side of the right support plate 25 near the upper side form a set of dialyzer clamping plates. The clamping plate 262 on the inner side of the left support plate 24 near the lower side and the clamping plate 262 on the inner side of the right support plate 25 near the lower side form another set of dialyzer clamping plates. Before pre-flushing begins, when dialyzer 3 needs to be flipped or tilted, the piston rods of cylinders III 261 on the left support plate 24 and right support plate 25 extend, driving the clamping plates 262 on both sides to approach and clamp dialyzer 3. The dialyzer 3 is held more stably by the two sets of upper and lower dialyzer clamping plates. During formal dialysis, dialyzer 3 is also held by these two sets of dialyzer clamping plates.

[0040] The rear ends of the left support plate 24 and the right support plate 25 are hinged together by a positioning and rotating mechanism, which includes a rotating shaft 28 and a torsion spring 29, as shown below. Figure 8 As shown. The rear end of the left support plate 24 near its inner side has at least two grooves 30, and the rear end of the right support plate 25 near its inner side has an equal number of protrusions 31 that cooperate with each other. In this embodiment, there are two grooves 30 and two protrusions 31. The rear end of the left support plate 24 and the protrusions 31 both have through holes I 32. The protrusions 31 on the rear end of the right support plate 25 are located within the corresponding grooves 30 on the rear end of the left support plate 24. The rotating shaft 28 passes through the through holes I 32 on the rear end of the left support plate 24 and the through holes I 32 on the protrusions 31. Torsion springs 29 are fitted onto the rotating shaft 28 within each groove 30 and at both ends of the corresponding protrusion 31. One end of the torsion spring 29 is fixedly connected to the sidewall of the corresponding groove 30, and the other end is fixedly connected to the corresponding protrusion 31. When the torsion springs 29 are in their natural state, the snap-fit ​​ends of the front ends of the left support plate 24 and the right support plate 25 are close to each other. When the dialyzer 8 is installed on the dialyzer support 2, the dialyzer 8 presses against the front end of the left support plate 24 and the right support plate 25. After the right end of the dialyzer 8 is pressed, the right support plate 25 rotates around the pivot 28 to the right rear side, and the torsion spring 29 deforms. After the dialyzer 8 is placed between the left support plate 24 and the right support plate 25, under the restoring force of the torsion spring 29, the left support plate 24 and the right support plate 25 are driven to approach the dialyzer 8, and the clamping mechanism 26 or the vibration mechanism 27 clamps the dialyzer 8.

[0041] Both the vibrating plate 274 and the clamping plate 262 have elastic pads 33 on their inner sides. Each elastic pad 33 has a pressure sensor 34 and an tilt sensor 35 mounted on its inner side. Figure 9 As shown, pressure sensor 34 and tilt sensor 35 are both electrically connected to the controller inside the dialysis machine body 1. Cylinder I 22, motor I 23, cylinder II 271, and clamping cylinder III 261 are all controlled by the controller inside the dialysis machine body 1. When the dialyzer 3 is clamped by the clamping plate 262 or the vibrating plate 274, the pressure sensor 34 can monitor the clamping force to prevent excessive clamping force from damaging the dialyzer 3, and to prevent insufficient clamping force from causing the dialyzer 3 to slip out from the two clamping plates 262 or the two vibrating plates 274. The tilt sensor 35 can monitor the tilt angle of the dialyzer 3 to tilt it to the optimal position, which facilitates the further upward movement and discharge of gas and impurities attached to the top of the dialyzer 3, and also ensures that the venous or arterial end of the dialyzer 3 is in the optimal position for discharge.

[0042] A support base 11 is located near the lower part of the left side wall of the dialysis machine body 1, and a support arm 12 is located near the upper part of the left side wall of the dialysis machine body 1. The support base 11 has an insertion port, and the support arm 12 has a through hole II. The support rod 41 of the infusion stand 4 passes through the through hole II on the support arm 12, and the bottom of the support rod 41 is inserted into the insertion port on the support base 11. Figure 1 and Figure 4 As shown. The distance between the clamping center formed by the left support plate 24 and the right support plate 25 and the support rod 41 is greater than half the length of the dialyzer 3. This prevents the end of the dialyzer 3 from contacting the support rod 41 when the motor I 23 drives the dialyzer 3 to flip or tilt, thus avoiding affecting the flipping or tilting of the dialyzer 3. The piston rod of the cylinder I 22 and the power output shaft of the motor I 23 both face the left side of the dialyzer body 1. After the piston rod of the cylinder I 22 extends, it can drive the entire left support plate 24, right support plate 25, clamping mechanism 26 and vibration mechanism 27 to be located outside the left side of the dialyzer body 1. This arrangement is not only conducive to the flipping or tilting of the support plate 24, right support plate 25, clamping mechanism 26 and vibration mechanism 27 and the clamped dialyzer 3, but also ensures that the connector on the dialyzer 3 that connects to the bypass pipeline is always located on the left side of the dialyzer 3, facilitating connection to the bypass pipeline.

[0043] The connecting mounting base 21 includes an insertion section 211 and an external section 212, such as... Figure 10 As shown, the insertion section 211 has a rectangular cross-section, and slots 213 are provided on all four sides of the insertion section 211. A rectangular mounting hole 13 is provided on the front side and near the left side of the dialysis machine body 1. Each surface of the inner wall of the mounting hole 13 has a circular hole 14 corresponding to the slot 213. The circular hole 14 consists of a smaller diameter circular hole segment I near the inner side and a larger diameter circular hole segment II near the outer side, as shown... Figure 11As shown. Each circular hole 14 is equipped with a limit mechanism 5, such as... Figure 12 As shown. The limiting mechanism 5 includes cylinder IV 51, limiting plate 52, guide sleeve 53, limiting block 54, limiting spring 55, and pull rope 56, as follows. Figure 13 As shown; cylinder IV 51 is installed in circular hole section I; limiting plate 52 is locked in circular hole section II and abuts against the step formed between circular hole section I and circular hole section II; limiting hole is provided in the middle of limiting plate 52; guide sleeve 53 passes through the limiting hole and slides with the limiting hole; limiting block 54 is set in circular hole section II and slides with the inner wall of circular hole section II; the inner end of limiting block 54 is fixedly connected to the outer end of guide sleeve 53; piston rod of cylinder IV 51 Extending to the inner end of the guide sleeve 53, the limiting spring 55 is sleeved outside the guide sleeve 53 and located between the limiting block 54 and the limiting plate 52. One end of the limiting spring 55 is fixed to the inner end of the limiting block 54, and the other end of the limiting spring 55 is fixed to the limiting plate 52. The pull rope 56 passes through the guide sleeve 53, with one end of the pull rope 56 fixedly connected to the inner end of the limiting block 54, and the other end of the pull rope 56 fixedly connected to the piston rod of the cylinder IV 51. The insertion section 211 is inserted into the mounting hole 13, and the outer end of the limiting block 54 is inserted into the corresponding slot 213, such as... Figure 12 As shown. Cylinder IV 51 is controlled by a controller inside the dialysis machine body 1. Before dialysis, the dialyzer support 2 needs to be installed on the dialysis machine body 1. First, the controller in the dialysis machine body 1 controls the piston rod 51 of cylinder IV 51 to retract, and pulls the limit block 54 into the round hole 14 through the pull rope 56. The guide sleeve 53 slides towards the side of cylinder IV 51, and the limit spring 55 is compressed. Then, the insertion section 211 of the connecting mounting base 21 is inserted into the mounting hole 13. After insertion, the controller controls the piston rod 51 of cylinder IV 51 to extend, and the pull rope 56 is released. At the same time, under the restoring force of the limit spring 55, the limit spring 55 drives the limit block 54 to move outward in the round hole 14 and insert into the corresponding slot 213.

[0044] The vibration spring 273 is a hollow spring. The power cord passes through the hollow cavity of the vibration spring 273. One end of the power cord is connected to the power source inside the dialyzer body 1, and the other end is connected to the vibration motor 275 on the corresponding side. By using a hollow structure for the vibration spring 273, the power cord is arranged inside the hollow structure of the vibration spring 273, avoiding the power cord being exposed and affecting the clamping and vibration of the dialyzer 3.

[0045] When using this hemodialysis machine, before starting dialysis, the dialyzer holder 2 needs to be installed in the mounting hole 13 of the dialysis machine body 1. The controller controls the piston rod of cylinder I 22 to extend to the left side of the dialysis machine body 1, driving motor I 23, left support plate 24, right support plate 25, clamping mechanism 26 and vibration mechanism 27 to move to the left together, so that the left support plate 24 and right support plate 25 are outside the left side of the dialysis machine body 1. Then, the dialyzer 3 is inserted between the left support plate 24 and right support plate 25, so that the bypass interface end on the dialyzer 3 faces left, which corresponds to the bypass pipeline on the left side wall of the dialysis machine body 1, making it easy to connect to the bypass pipeline. The controller controls the piston rod of cylinder III 261 to extend, driving the clamping plate 262 to approach the dialysis machine. The main body 1 has elastic pads 33 on the inner side of the clamping plates 262 on both sides pressing against the left and right sides of the dialyzer 3. The dialyzer 3 is held by the upper and lower sets of dialyzer clamping plates. The pressure sensor 34 on the elastic pad 33 detects the clamping force of the clamping plates 262 on the dialyzer 3, and the clamping force can be controlled. Then, the venous tubing is connected to the venous end at the top of the dialyzer 3. After the venous end on the dialyzer 3 is connected, the controller controls the motor I 23 to rotate, causing the dialyzer 3 to flip. The venous end of the dialyzer 3 flips forward and downward until the venous end of the dialyzer 3 is at the bottom of the dialyzer 3. Then, the arterial tubing is connected to the arterial end of the dialyzer 3. Then, the motor I 23 drives the dialyzer 3 to rotate back, so that the venous end of the dialyzer 3 returns to the top. The controller controls the piston rod of cylinder II 271 to extend, and the piston rod drives the guide sleeve 272 to move towards the center, thereby driving the vibration spring 273 and the vibration plate 274 to approach the dialyzer 3 together. The elastic pads 33 on the inner side of the left and right vibration plates 274 press on the left and right sides of the dialyzer 3 and clamp the dialyzer 3. At this time, the controller controls the piston rod of cylinder III 261 to retract, driving the clamping plate 262 and the elastic pads 33 on its inner side away from the dialyzer 3, releasing the clamping mechanism 26 from the dialyzer 3.The vibration motors 275 on both sides are turned on. At the same time, motor I 23 drives the dialyzer 3 to tilt back and forth. The tilt angle of the dialyzer 3 is detected by the tilt sensor 35 on the elastic pad 33 on the inner side of the vibration plate 274, which facilitates precise control of the tilt angle of the dialyzer 3. When the pre-flushing fluid passes through the dialyzer 3, the vibration motors 275 of the left support plate 24 and the right support plate 25 are at different heights. With the synergistic effect of motor I 23 driving the dialyzer 3 to tilt, the dialyzer 3 is in a multi-dimensional mixed motion. Driven by the pre-flushing fluid, the fluid adheres to the inner wall of the dialyzer 3 and the fiber membrane inside the dialyzer 3. Air and impurities can be quickly removed and discharged. After the dialyzer 3 is tilted back and forth, it is also convenient for the gas and impurities attached to the top of the dialyzer 3 to be discharged through the venous end. After the gas and impurities in the dialyzer 3 membrane are discharged, the bypass interface on the dialyzer 3 is connected to the bypass line. The controller controls the motor I23 to drive the dialyzer 3 to rotate so that the arterial end of the dialyzer 3 faces upward. The bypass line is opened to flush the outside of the dialyzer 3 membrane. At the same time, two vibration motors 275 are turned on, and the dialyzer 3 is driven by the motor I23 to swing up and down slightly, which can quickly remove the gas and impurities outside the dialyzer 3 membrane. This hemodialysis machine features automatic dialyzer rotation, automatic dialyzer tilting, and automatic dialyzer vibration, enabling automatic air and impurity removal without manual operation. Medical personnel only need to connect the venous end, arterial end, and bypass interface, significantly reducing manual operation and thus minimizing contact with the equipment. This also lowers the risk of infection associated with subsequent manual connection of the human puncture needles. Furthermore, automatic control prevents improper operation by medical personnel from causing impurities within the dialyzer and incomplete removal of gas from the dialyzer membrane, which could lead to embolism. This greatly reduces reliance on medical personnel and ensures better clearance of gas and impurities from the dialyzer membrane during pre-priming.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A hemodialysis machine comprising a dialysis machine body (1) and a dialyzer support (2) mounted on the dialysis machine body (1), characterized in that: The dialyzer support (2) comprises a connecting mounting base (21), a cylinder I (22), a motor I (23), a left support plate (24) and a right support plate (25); one end of the connecting mounting base (21) is detachably connected on the front side of the dialysis machine main body (1), the other end of the connecting mounting base (21) extends to the outside of the front side of the dialysis machine main body (1), the cylinder I (22) is fixed on the other end of the connecting mounting base (21), the piston rod of the cylinder I (22) horizontally extends to the left side of the dialysis machine main body (1), the motor I (23) is fixedly connected on the piston rod of the cylinder I (22), the power output shaft of the motor I (23) is horizontally arranged, the left support plate (24) and the right support plate (25) are both arc plates, the inner concave arc surfaces of the left support plate (24) and the right support plate (25) correspond to each other, the rear ends of the left support plate (24) and the right support plate (25) are hingedly connected to each other, the front ends of the left support plate (24) and the right support plate (25) form the clamping end of the dialyzer (3), and the power output shaft of the motor I (23) is fixedly connected with the left side surface of the left support plate (24); the left support plate (24) and the right support plate (25) are internally provided with a clamping mechanism (26) capable of clamping the dialyzer (3), and the left support plate (24) and the right support plate (25) are further provided with a vibration mechanism (27) capable of vibrating the dialyzer (3); The vibration mechanism (27) comprises a left vibration mechanism installed in the middle of the inner side of the left supporting plate (24) and a right vibration mechanism installed in the middle of the inner side of the right supporting plate (25), and each of the left vibration mechanism and the right vibration mechanism comprises a cylinder II (271), a guide cylinder (272) with one open end, a vibration spring (273), a vibration plate (274) and a vibration motor (275), the middle of the inner side of the left supporting plate (24) and the middle of the inner side of the right supporting plate (25) are provided with a cylinder II mounting hole (276), the left cylinder II (271) is fixedly installed in the cylinder II mounting hole (276) of the left supporting plate (24), the right cylinder II (271) is fixedly installed in the cylinder II mounting hole (276) of the right supporting plate (25), the piston rod of the cylinder II (271) faces the inner side, the guide cylinder (272) is fixedly connected to the piston rod of the cylinder II (271), one end of the vibration spring (273) is fixedly connected to the inner side end wall of the guide cylinder (272), the other end of the vibration spring (273) extends out of the open end of the guide cylinder (272) and is fixedly connected with the vibration plate (274), the outer diameter of the guide cylinder (272) is smaller than the inner diameter of the cylinder II mounting hole (276), the vibration plate (274) is an arc-shaped plate, the inner concave arc-shaped surfaces of the left vibration plate (274) and the right vibration plate (274) correspond to each other, and the left vibration plate (274) and the right vibration plate (274) are used for clamping the dialyzer (3) when vibrating, the left vibration motor (275) is installed on the left side bottom of the left vibration plate (274), and the right vibration motor (275) is installed on the right side top of the right vibration plate (274).

2. The hemodialysis machine of claim 1, wherein: The inner side of the left supporting plate (24) near the upper and lower sides and the inner side of the right supporting plate (25) near the upper and lower sides are provided with clamping mechanisms (26), the clamping mechanism (26) comprises a clamping cylinder III (261) and a clamping plate (262), the inner side of the left supporting plate (24) near the upper and lower sides and the inner side of the right supporting plate (25) near the upper and lower sides are provided with cylinder III mounting holes (263), one clamping cylinder III (261) is installed in each cylinder III mounting hole (263), the piston rod of the clamping cylinder III (261) faces the inner side, the piston rod of the clamping cylinder III (261) is fixedly connected with the clamping plate (262), the clamping plate (262) is an arc-shaped plate, the clamping plates (262) near the upper side of the inner side of the left supporting plate (24) and the clamping plates (262) near the upper side of the inner side of the right supporting plate (25) form a set of dialyzer clamping plates, and the clamping plates (262) near the lower side of the inner side of the left supporting plate (24) and the clamping plates (262) near the lower side of the inner side of the right supporting plate (25) form another set of dialyzer clamping plates.

3. The hemodialysis machine of claim 2, wherein: The rear ends of the left support plate (24) and the right support plate (25) are hingedly connected to each other through a positioning rotating mechanism, the positioning rotating mechanism comprises a rotating shaft (28) and a torsion spring (29), at least two grooves (30) are arranged on the rear end of the left support plate (24) close to the inner side, and a protrusion (31) equal in number to the grooves (30) and matched with the grooves (30) is arranged on the rear end of the right support plate (25) close to the inner side, a through hole I (32) is arranged on the rear end of the left support plate (24) and the protrusion (31), the protrusion (31) on the rear end of the right support plate (25) is located in the groove (30) on the rear end of the left support plate (24), the rotating shaft (28) passes through the through hole I (32) on the rear end of the left support plate (24) and the through hole I (32) on the protrusion (31), and the rotating shaft (28) in each groove (30) and located at both ends of the corresponding protrusion (31) is sleeved with the torsion spring (29). One end of the torsion spring (29) is fixedly connected to the side wall of the corresponding groove (30), the other end of the torsion spring (29) is fixedly connected to the corresponding protrusion (31), and when the torsion spring (29) is in a natural state, the clamping ends of the front ends of the left support plate (24) and the right support plate (25) are close to each other.

4. The hemodialysis machine of claim 3, wherein: The inner sides of the vibrating plate (274) and the clamping plate (262) are provided with elastic pads (33), a pressure sensor (34) and an inclination sensor (35) are mounted on the inner side surface of each elastic pad (33), the pressure sensor (34) and the inclination sensor (35) are electrically connected with the controller in the dialysis machine body (1), and the cylinder I (22), the motor I (23), the cylinder II (271) and the clamping cylinder III (261) are controlled by the controller in the dialysis machine body (1).

5. The hemodialysis machine of claim 4, wherein: A support seat (11) is arranged on the left side of the dialysis machine body (1) close to the lower part, a support arm (12) is arranged on the left side of the dialysis machine body (1) close to the upper part, the support seat (11) is provided with a socket, the support arm (12) is provided with a through hole II, the support rod (41) of the infusion support (4) passes through the through hole II on the support arm (12), the bottom of the support rod (41) is inserted into the socket on the support seat (11), and the distance between the clamping center formed by the left support plate (24) and the right support plate (25) and the support rod (41) is greater than half the length of the dialyzer (3).

6. The hemodialysis machine of any one of claims 1 to 5, wherein: The connecting mounting base (21) comprises an insertion section (211) and an external section (212), the cross section of the insertion section (211) is rectangular structure, and the four faces of the insertion section (211) are all provided with clamping grooves (213); the front side of the dialysis machine main body (1) is provided with a rectangular mounting hole (13) close to the left side, each face of the inner wall of the mounting hole (13) is provided with a round hole (14) corresponding to the clamping groove (213), the round hole (14) is composed of a small-diameter round hole section I close to the inner side and a large-diameter round hole section II close to the outer side, and a limiting mechanism (5) is mounted in each round hole (14); the limiting mechanism (5) comprises a cylinder IV (51), a limiting plate (52), a guide sleeve (53), a limiting clamping block (54), a limiting spring (55) and a pull rope (56); the cylinder IV (51) is mounted in the round hole section I, the limiting plate (52) is clamped in the round hole section II and abuts against the step formed between the round hole section I and the round hole section II, the middle part of the limiting plate (52) is provided with a limiting hole, the guide sleeve (53) passes through the limiting hole and is in sliding fit with the limiting hole, the limiting clamping block (54) is arranged in the round hole section II and is in sliding fit with the inner wall of the round hole section II, the inner side end of the limiting clamping block (54) is fixedly connected with the outer end of the guide sleeve (53), the piston rod of the cylinder IV (51) extends to the inner end of the guide sleeve (53), the limiting spring (55) is sleeved outside the guide sleeve (53) and located between the limiting clamping block (54) and the limiting plate (52), one end of the limiting spring (55) is fixed on the inner end of the limiting clamping block (54), the other end of the limiting spring (55) is fixed on the limiting plate (52), the pull rope (56) passes through the guide sleeve (53), one end of the pull rope (56) is fixedly connected with the inner end of the limiting clamping block (54), and the other end of the pull rope (56) is fixedly connected with the piston rod of the cylinder IV (51); the insertion section (211) is inserted into the mounting hole (13), and the outer end of the limiting clamping block (54) is inserted into the corresponding clamping groove (213).

7. The hemodialysis machine of claim 6, wherein: The cylinder IV (51) is controlled by a controller in the dialysis machine main body (1).

8. The hemodialysis machine of claim 1, wherein: The vibration spring (273) is a hollow spring, a power line passes through the hollow cavity of the vibration spring (273), one end of the power line is connected with a power supply in the dialysis machine main body (1), and the other end of the power line is connected with the vibration motor (275) on the corresponding side.

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