Hemodialysis foam breaker

Abstract

The invention discloses a hemodialysis foam breaker, and relates to the technical field of hemodialysis equipment, the hemodialysis foam breaker comprises a foam breaking cylinder and a rotating paddle, and a shunting cover is fixed above the foam breaking cylinder. According to the hemodialysis foam breaker, blood is impacted and dispersed through the tip end of the flow guide block, then is guided and gathered at the same outlet through the flow guide groove, the blood impacts the concave face of the rotating paddle, the rotating paddle drives the main shaft to rotate, and small bubbles can be broken through collision between the rotating paddle and the blood and shear force of the rotating paddle; when the main shaft rotates, a scraping mechanism drives a scraping ring to scrape a small amount of blood remaining and adhering to the inner wall of the cavity, after the blood enters the transition cylinder, the main shaft rotates to enable a series of assemblies to drive a knocking block to knock the transition cylinder, a buffering mechanism buffers the knocking force, the transition cylinder generates small-frequency vibration, and therefore the blood collecting effect is improved. And bubbles can be driven to float to the surface of blood and are gathered and broken, so that the working efficiency and the working quality of the hemodialysis defoaming device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hemodialysis equipment, in particular to a hemodialysis defoamer. Background Art

[0002] Hemodialysis is a medical procedure used to treat kidney failure, designed to remove toxins and excess fluid from the blood. This process is performed using a dialyzer. Blood is drawn from the patient and passed through the dialyzer. The semipermeable membrane of the dialyzer exchanges waste products and electrolytes with the dialysate, achieving a purification effect. Dialysis treatment can help patients with kidney failure maintain their lives. During the hemodialysis process, it is crucial to eliminate air bubbles from the blood to prevent them from entering the patient's circulatory system and causing serious complications such as air embolism. Therefore, a hemodialysis defoamer is installed on the hemodialysis machine to remove air bubbles from the blood.

[0003] Existing hemodialysis defoamers usually use ultrasonic vibration or sharp block crushing to defoam blood. The defoaming method is relatively simple. Especially when the blood flows too fast, the simple bubble crushing structure cannot completely remove all bubbles in the blood. While the blood flows, a small amount of blood will be retained and adhere to the inner wall of the defoamer, forming small bubbles. The blood retention will affect the fluidity of the blood and reduce the working efficiency and quality of the defoamer. For this reason, we propose a hemodialysis defoamer. Summary of the Invention

[0004] The object of the present invention is to provide a hemodialysis defoamer to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hemodialysis defoamer, comprising a defoaming cylinder and a rotating paddle, a diverter cover is fixed on the top of the defoaming cylinder, the top of the diverter cover is connected to the hemodialyzer through a No. 1 connecting hose, the bottom end of the defoaming cylinder away from the diverter cover is connected to a liquid outlet pipe, a cavity is opened in the middle of the defoaming cylinder, a main shaft is installed on the inner wall of the defoaming cylinder close to the cavity through a bearing, the rotating paddle is distributed in an annular manner on the outside of the main shaft, a scraping mechanism is installed at one end of the main shaft, and the scraper The removal mechanism includes a fixed gear plate fixedly sleeved on the outside of the main shaft, one side of the fixed gear plate is meshedly connected to the swinging gear plate, the main shaft is movably sleeved with a ring on the outside of the fixed gear plate, the side of the ring close to the swinging gear plate is fixedly connected to a No. 1 rocker arm, the outside of the ring is fixedly connected to a ring-shaped No. 2 rocker arm, the same end of the No. 1 rocker arm and the No. 2 rocker arm is fixedly connected to a scraper ring, a strip groove is provided on the inner side of the No. 1 rocker arm, and a cylindrical slider is fixed to the surface of the side of the swinging gear plate close to the strip groove.

[0006] Preferably, a guide groove is provided in the middle of the diverter cover, a guide block is provided inside the guide groove, and an annularly distributed oblique rod is fixedly connected between the outer side of the guide block and the inner wall of the guide groove.

[0007] Preferably, the rotating paddle is fixedly connected to the main shaft, and the cylindrical slider is slidably connected to the strip-shaped slide groove.

[0008] Preferably, an air outlet is provided on the inner wall of the defoaming cylinder near the cavity, a liquid guide port is provided inside the defoaming cylinder near the bottom of the cavity, and a transition cylinder is provided in the built-in groove of the defoaming cylinder near the bottom of the liquid guide port.

[0009] Preferably, buffer mechanisms are connected to both sides of the transition cylinder, and a movable ring is slidably sleeved on one end of the main shaft away from the rotating paddle.

[0010] Preferably, a reciprocating slider is fixed on the inner wall of the movable ring, and an annular groove is provided on the outer wall of the main shaft close to the reciprocating slider.

[0011] Preferably, a knocking rod is connected to the bottom of the movable ring, and a knocking block is connected to one end of the knocking rod close to the transition tube.

[0012] Preferably, a movable groove is provided inside the defoaming cylinder near the knocking rod, and the movable groove and the knocking rod are slidably connected.

[0013] Preferably, a No. 2 connecting hose is connected between the bottom end of the transition tube and the liquid outlet pipe, and the buffer mechanism includes a receiving block connected to both ends of the transition tube.

[0014] Preferably, a sliding rod is slidably sleeved on the inner side of the receiving block, and a buffer spring is sleeved on the outer side of the sliding rod close to both sides of the receiving block. The two ends of the sliding rod are connected to the inner wall of the defoaming cylinder through a mounting block.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the hemodialysis defoamer disperses the blood by impacting the tip of the guide block. After the blood is dispersed through the circumference, a small part of the bubbles in the blood will be broken by the tip of the guide block and the inclined rod. Then the blood is guided through the guide groove and gathered at the same outlet. The blood flows downward into the cavity. Since the blood has a certain impact when it flows downward, the blood flows to the concave surface of the rotating paddle. The kinetic energy of the blood flow is converted into the rotational power of the rotating paddle, so that the rotating paddle drives the main shaft to rotate. The rotating paddle collides with the blood, and the shear force of the rotating paddle can help break the small bubbles. At the same time as the main shaft rotates, the scraping mechanism drives the scraper ring to scrape off a small amount of blood retained and adhered to the inner wall of the cavity. After the blood enters the transition tube, the main shaft drives the moving ring to move, and the moving ring then drives the knocking rod to drive the knocking block to knock on the outer wall of the transition tube. The buffer mechanism buffers the knocking force, so that the transition tube generates a small frequency vibration, which can drive the bubbles to float to the surface of the blood and gather and break them, which is beneficial to improving the working efficiency and work quality of the hemodialysis defoamer.

[0016] 1. This hemodialysis defoamer can disperse blood through the tip of the guide block when it passes through the diversion cover. After the blood is dispersed around the circumference, a small number of bubbles in the blood will be broken by the tip of the guide block and the inclined rod. The blood is then guided through the guide groove and gathered at the same outlet. The blood flows downward into the cavity. Because the blood flow has a certain impact, the blood flows to the concave surface of the rotating paddle. The kinetic energy of the blood flow is converted into the rotational power of the rotating paddle, so that the rotating paddle drives the main shaft to rotate. When the rotating paddle collides with the blood, the shear force of the rotating paddle can help break small bubbles, reduce bubble generation, accelerate defoaming efficiency, and improve blood fluidity.

[0017] 2. The hemodialysis defoamer, when the rotating paddle rotates, drives the main shaft to rotate, and the main shaft drives the fixed gear plate to rotate, and then the fixed gear plate is meshed with the swinging gear plate, so that the fixed gear plate drives the swinging gear plate to rotate, and the swinging gear plate drives the cylindrical slider to rotate, and the cylindrical slider slides in the strip slide groove, and the cylindrical slider can pull the first swing rod to rotate and swing back and forth around the main shaft, and at the same time, the first swing rod drives the collar to rotate outside the main shaft, and the second swing rod swings along with the first swing rod, and the first and second swing rods drive the scraper ring to rotate and swing back and forth, scraping off the blood retained and adhered on the inner wall of the cavity, thereby improving the blood transportation efficiency and no additional power source is required, thereby improving the practicality of the hemodialysis defoamer;

[0018] 3. In the hemodialysis defoamer, the blood in the cavity can flow into the transition tube through the liquid guide port. When the rotating paddle drives the main shaft to rotate, the main shaft drives the annular groove to rotate, and the annular groove squeezes the reciprocating slider, so that the reciprocating slider slides back and forth along the annular groove. At the same time, the reciprocating slider drives the moving ring to slide back and forth on the outside of the main shaft. Then the moving ring drives the knocking rod to slide in the moving groove, and the knocking rod drives the knocking block to knock the transition tube. At the same time, the receiving blocks at both ends of the transition tube slide back and forth on the outside of the sliding rod. The buffer spring buffers and reduces the moving force of the receiving block, generating low-frequency vibration on the blood inside the transition tube, which can make small bubbles gather and float on the surface of the blood, thereby accelerating the efficiency of small bubble crushing. The transition tube cooperates with the rotating paddle to fully crush the bubbles, thereby improving the working quality of the hemodialysis defoamer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the defoaming cylinder of the present invention;

[0021] Figure 3 Schematic diagram of the three-dimensional cross-sectional structure of the guide trough of the present invention;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the guide block of the present invention;

[0023] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the cavity of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the transition tube of the present invention;

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the scraping mechanism of the present invention;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the knocking rod of the present invention;

[0027] Figure 9 This is a schematic diagram of the three-dimensional cross-sectional structure of the main shaft of the present invention;

[0028] Figure 10 It is a schematic diagram of the three-dimensional structure of the buffer mechanism of the present invention.

[0029] In the figure: 1. Defoaming cylinder; 2. Diverter hood; 3. Connecting hose No. 1; 4. Hemodialyzer; 5. Liquid outlet pipe; 6. Scraping mechanism; 601. Ring; 602. Fixed gear disc; 603. Cylindrical slider; 604. Strip slide; 605. Rocker No. 1; 7. Swinging gear disc; 8. Air outlet; 9. Buffer mechanism; 901. Receiver block; 902. Buffer spring; 903. Slide rod; 10. Transition cylinder; 11. Connecting hose No. 2; 12. Moving groove; 13. Cavity; 14. Liquid guide port; 15. Knocking rod; 16. Knocking block; 17. Spindle; 18. Rotating paddle; 19. Annular groove; 20. Scraping ring; 21. Guide block; 22. Guide groove; 23. Inclined rod; 24. Mounting block; 25. Rocker No. 2; 26. Moving ring; 27. Reciprocating slider. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 3 、 Figure 5 and Figure 6 The present invention provides a technical solution: a hemodialysis defoamer, comprising a defoaming cylinder 1 and a rotating paddle 18, a diverter cover 2 is fixed above the defoaming cylinder 1, the top of the diverter cover 2 is connected to a hemodialyzer 4 through a No. 1 connecting hose 3, and the bottom end of the defoaming cylinder 1 away from the diverter cover 2 is connected to a liquid outlet pipe 5.

[0032] See also Figure 2-Figure 9 A cavity 13 is provided in the middle of the defoaming cylinder 1, and a main shaft 17 is installed on the inner wall of the defoaming cylinder 1 near the inside of the cavity 13 through a bearing. The rotating paddle 18 is distributed in an annular manner on the outside of the main shaft 17, and a guide groove 22 is provided in the middle of the diverter cover 2. A guide block 21 is provided inside the guide groove 22, and a circularly distributed inclined rod 23 is fixedly connected between the outer side of the guide block 21 and the inner wall of the guide groove 22. A plurality of sharp blocks are provided on the surface of the inclined rod 23, and the guide block 21 is set to a conical structure. The material of the rotating paddle 18 is selected as polytetrafluoroethylene, the rotating paddle 18 is set to an arc structure, and the inner side of the rotating paddle 18 is set to a concave structure. The cross-sectional shape of the inclined rod 23 is set to a triangle.

[0033] In specific implementation, the existing hemodialysis defoamer usually defoams by ultrasonic vibration or sharp block crushing. The defoaming method is relatively simple. When there are more bubbles in the blood, it takes a longer time to defoam, resulting in low defoaming efficiency and affecting blood circulation. When the blood passes through the diversion cover 2, the blood can be first dispersed by the tip of the guide block 21. After the blood is dispersed through the circumference, a small part of the bubbles in the blood will be broken by the tip of the guide block 21 and the inclined rod 23. Then the blood is guided by the guide groove 22 and gathered at the same outlet. The blood flows downward into the cavity 13. Since the blood has a certain impact when it flows downward, the blood flows to the concave surface of the rotating paddle 18. The kinetic energy of the blood flow is converted into the rotational power of the rotating paddle 18, so that the rotating paddle 18 drives the main shaft 17 to rotate. The rotating paddle 18 collides with the blood, and the shear force of the rotating paddle 18 can help break small bubbles, reduce the generation of bubbles, accelerate the defoaming efficiency, and improve blood fluidity.

[0034] See also Figure 2 and Figure 6-Figure 9 A scraping mechanism 6 is installed at one end of the main shaft 17, and the scraping mechanism 6 includes a fixed toothed disc 602 fixedly sleeved on the outside of the main shaft 17, and one side of the fixed toothed disc 602 is meshedly connected to the swing toothed disc 7. The main shaft 17 is movably sleeved on the outside of the fixed toothed disc 602 with a collar 601, and the side of the collar 601 close to the swing toothed disc 7 is fixedly connected to a first pendulum rod 605, and the outside of the collar 601 is fixedly connected to a second pendulum rod 205 distributed in an annular manner. 5. The same end of the No. 1 pendulum rod 605 and the No. 2 pendulum rod 25 is fixedly connected to a scraper ring 20. A strip groove 604 is provided on the inner side of the No. 1 pendulum rod 605. A cylindrical slider 603 is fixed to the surface of the swing gear plate 7 on the side close to the strip groove 604. The rotating paddle 18 is fixedly connected to the main shaft 17. The cylindrical slider 603 is slidably connected to the strip groove 604. The curvature of the scraper ring 20 matches the curvature of the inner wall of the cavity 13.

[0035] During specific implementation, when the rotating paddle 18 rotates, the rotating paddle 18 drives the main shaft 17 to rotate, and the main shaft 17 drives the fixed gear plate 602 to rotate. Then, the fixed gear plate 602 is meshed with the swinging gear plate 7, so that the fixed gear plate 602 drives the swinging gear plate 7 to rotate, and the swinging gear plate 7 drives the cylindrical slider 603 to rotate. The cylindrical slider 603 slides in the strip slide groove 604, and the cylindrical slider 603 can pull the No. 1 rocker bar 605 to rotate and swing back and forth around the main shaft 17. At the same time, the No. 1 rocker bar 605 drives the collar 601 to rotate on the outside of the main shaft 17, and the No. 2 rocker bar 25 swings with the No. 1 rocker bar 605. The No. 1 rocker bar 605 and the No. 2 rocker bar 25 then drive the scraper ring 20 to rotate and swing back and forth, scraping off the blood retained and adhered on the inner wall of the cavity 13, thereby improving the blood delivery efficiency and no need to provide an additional power source, thereby improving the practicality of the hemodialysis defoamer.

[0036] See also Figure 2 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 10 , an air outlet 8 is provided on the inner wall of the defoaming cylinder 1 near the cavity 13, a liquid guide port 14 is provided inside the defoaming cylinder 1 near the bottom of the cavity 13, a transition cylinder 10 is provided in the built-in groove below the liquid guide port 14 of the defoaming cylinder 1, and buffer mechanisms 9 are connected to both sides of the transition cylinder 10, and a moving ring 26 is slidably sleeved on one end of the main shaft 17 away from the rotating paddle 18, a reciprocating slider 27 is fixed on the inner wall of the moving ring 26, and an annular groove 19 is provided on the outer wall of the main shaft 17 near the reciprocating slider 27, a knocking rod 15 is connected to the bottom of the moving ring 26, and a knocking block 16 is connected to the end of the knocking rod 15 near the transition cylinder 10, and the defoaming cylinder 1 is close to the rotating paddle 18. A movable groove 12 is provided inside the knocking rod 15, and the movable groove 12 and the knocking rod 15 are slidably connected. A No. 2 connecting hose 11 is connected between the bottom end of the transition cylinder 10 and the liquid outlet pipe 5. The buffer mechanism 9 includes a receiving block 901 connected to both ends of the transition cylinder 10. The inner side of the receiving block 901 is slidably sleeved with a sliding rod 903. The sliding rod 903 is sleeved with a buffer spring 902 on the outside near both sides of the receiving block 901. The two ends of the sliding rod 903 are connected to the inner wall of the defoaming cylinder 1 through a mounting block 24. The knocking rod 15 is set to be L-shaped, the opening of the liquid guide port 14 is located inside the transition cylinder 10, and the annular groove 19 is set to be inclined.

[0037] In a specific implementation, after the blood is guided and defoamed by the rotating paddle 18, a small amount of small bubbles will still exist in the blood. The blood in the cavity 13 can flow into the transition tube 10 through the liquid guide port 14. When the rotating paddle 18 drives the main shaft 17 to rotate, the main shaft 17 drives the annular groove 19 to rotate, and the annular groove 19 squeezes the reciprocating slider 27, so that the reciprocating slider 27 slides back and forth along the annular groove 19. At the same time, the reciprocating slider 27 drives the moving ring 26 to slide back and forth on the outside of the main shaft 17, and then the moving ring 26 drives the knocking rod 15 Sliding in the moving groove 12, the knocking rod 15 drives the knocking block 16 to knock on the transition tube 10. At the same time, the receiving blocks 901 at both ends of the transition tube 10 slide back and forth on the outside of the sliding rod 903. The buffer spring 902 buffers and reduces the moving force of the receiving block 901, generating low-frequency vibrations on the blood inside the transition tube 10, which can make small bubbles gather and float on the surface of the blood, speeding up the efficiency of small bubble breakage. The transition tube 10 cooperates with the rotating paddle 18 to fully break the bubbles, thereby improving the working quality of the hemodialysis defoamer.

[0038] In summary, when the hemodialysis defoamer is used, the hemodialyzer 4 inputs the filtered blood into the diversion cover 2 through the No. 1 connecting hose 3, disperses and guides the blood through the guide block 21 and the guide groove 22, and then gathers the blood. At the same time, the guide block 21 and the inclined rod 23 initially break the bubbles in the blood, and the blood then impacts the rotating paddle 18, so that the rotating paddle 18 drives the main shaft 17 to rotate. The rotating paddle 18 collides with the blood, which can generate shear force, causing the bubbles to burst and enhance the blood fluidity. While the rotating paddle 18 rotates, it can drive the scraping mechanism 6 and the scraping ring 20 to scrape the inner wall of the cavity 13. Scraping can prevent blood from staying and adhering to the inner wall of the cavity 13, facilitating blood flow, and when blood enters the transition tube 10, the main shaft 17 drives the knocking rod 15 and the knocking block 16 to knock on the transition tube 10, and at the same time the buffer mechanism 9 buffers the movement of the transition tube 10, so that the transition tube 10 vibrates at a low frequency, which can make small bubbles rise and gather on the surface of the blood, which is conducive to the rapid breakage of bubbles. Finally, the blood is transported to the liquid outlet pipe 5 through the No. 2 connecting hose 11, and is transported into the human body through the external infusion pipeline. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hemodialysis defoamer, comprising a defoaming cylinder (1) and a rotating paddle (18), wherein a diverter cover (2) is fixed above the defoaming cylinder (1), the top of the diverter cover (2) is connected to a hemodialyzer (4) via a No. 1 connecting hose (3), and the bottom end of the defoaming cylinder (1) away from the diverter cover (2) is connected to a liquid outlet pipe (5), characterized in that: A cavity (13) is provided in the middle of the defoaming cylinder (1), a main shaft (17) is mounted on the inner wall of the defoaming cylinder (1) near the cavity (13) via a bearing, the rotating paddles (18) are distributed in an annular manner on the outside of the main shaft (17), a scraping mechanism (6) is mounted on one end of the main shaft (17), the scraping mechanism (6) comprises a fixed toothed disc (602) fixedly sleeved on the outside of the main shaft (17), one side of the fixed toothed disc (602) is meshedly connected to a swinging toothed disc (7), and the main shaft (17) is close to the fixed toothed disc (602). A sleeve (601) is movably sleeved on the outside, and a first rocker (605) is fixedly connected to the side of the sleeve (601) close to the swinging gear disc (7), and a second rocker (25) distributed in an annular pattern is fixedly connected to the outside of the sleeve (601), and a scraper ring (20) is fixedly connected to the same end of the first rocker (605) and the second rocker (25), and a strip-shaped slide groove (604) is provided on the inside of the first rocker (605), and a cylindrical slider (603) is fixed on the surface of the side of the swinging gear disc (7) close to the strip-shaped slide groove (604).

2. A hemodialysis defoamer according to claim 1, characterized in that: A guide groove (22) is provided in the middle of the diversion cover (2), a guide block (21) is provided inside the guide groove (22), and an annularly distributed oblique rod (23) is fixedly connected between the outer side of the guide block (21) and the inner wall of the guide groove (22).

3. A hemodialysis defoamer according to claim 1, characterized in that: The rotating paddle (18) and the main shaft (17) are fixedly connected, and the cylindrical slider (603) and the strip-shaped slide groove (604) are slidably connected.

4. A hemodialysis defoamer according to claim 1, characterized in that: An air outlet (8) is provided on the inner wall of the defoaming cylinder (1) near the cavity (13), a liquid guide port (14) is provided inside the defoaming cylinder (1) below the cavity (13), and a transition cylinder (10) is provided in a built-in groove below the liquid guide port (14).

5. A hemodialysis defoamer according to claim 4, characterized in that: Buffer mechanisms (9) are connected to both sides of the transition cylinder (10), and a moving ring (26) is slidably sleeved on one end of the main shaft (17) away from the rotating paddle (18).

6. A hemodialysis defoamer according to claim 5, characterized in that: A reciprocating slider (27) is fixed on the inner wall of the movable ring (26), and an annular groove (19) is provided on the outer wall of the main shaft (17) near the reciprocating slider (27).

7. A hemodialysis defoamer according to claim 6, characterized in that: A knocking rod (15) is connected to the lower side of the movable ring (26), and a knocking block (16) is connected to one end of the knocking rod (15) close to the transition tube (10).

8. A hemodialysis defoamer according to claim 7, characterized in that: A movable groove (12) is provided inside the defoaming cylinder (1) near the knocking rod (15), and the movable groove (12) and the knocking rod (15) are in sliding connection.

9. A hemodialysis defoamer according to claim 5, characterized in that: A second connecting hose (11) is connected between the bottom end of the transition tube (10) and the liquid outlet pipe (5), and the buffer mechanism (9) includes a receiving block (901) connected to both ends of the transition tube (10).

10. A hemodialysis defoamer according to claim 9, characterized in that: The inner side of the receiving block (901) is slidably sleeved with a slide rod (903), and the outer sides of the slide rod (903) close to both sides of the receiving block (901) are sleeved with a buffer spring (902), and the two ends of the slide rod (903) are connected to the inner wall of the defoaming cylinder (1) through the mounting block (24).

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