Hemodialysis foam breaker
By designing a hemodialysis defoamer with stents, vibration damping components and binding components, the problems of vibration conduction and infusion tube positioning are solved, safe and efficient defoaming effect is achieved, and the operation stability of the hemodialysis equipment is improved.
Patent Information
- Application Number
- CN202510777591.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-07-08
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When existing hemodialysis equipment vibrates and defoams, vibrations are easily transmitted to other components and the patient's body, affecting safety, and the infusion tube is not easy to position and is prone to bend, causing the equipment to run abnormally.
A hemodialysis defoamer including mounting brackets, vibration damping components, vibration mechanisms and binding components is designed to absorb vibration energy through the support plate and shock absorber, use vibration motors to defoam, and fix the infusion tube by binding components to prevent bending.
It effectively reduces the impact of vibration on the equipment, ensures safety, and prevents infusion tubes from bent, improving the operating stability and efficiency of hemodialysis equipment.
Smart Images

Figure CN120267913A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of hemodialysis equipment, and specifically to a hemodialysis defoamer. Background Art
[0002] Hemodialysis is one of the kidney replacement treatment methods for patients with acute and chronic renal failure. It involves draining the blood in the body to the outside, passing it through a dialyzer composed of countless hollow fibers. Inside and outside the hollow fibers, the blood and an electrolyte solution with a concentration similar to that of the body undergo mass exchange through the principles of diffusion, ultrafiltration, adsorption, and convection to remove metabolic wastes in the body, maintain electrolyte and acid-base balance, and at the same time remove excess water in the body. The whole process of returning the purified blood is called hemodialysis.
[0003] Hemodialysis equipment usually includes components such as a dialyzer, a hemofiltration device, a hemoperfusion device, and an endotoxin filter. Since the flow of liquid in the hemodialysis equipment mainly relies on externally added water pressure to make the liquid flow in the pipeline, thereby realizing the transportation of the liquid and the replenishment of liquid during dialysis, bubbles are likely to appear in the above-mentioned dialysis equipment during dialysis. In order to eliminate bubbles, a hemodialysis defoamer is disclosed in Chinese Patent Publication No. CN117205390B. This hemodialysis defoamer uses a clamping structure to install a vibration mechanism on the corresponding dialysis equipment, thereby eliminating the bubbles existing in the hemodialysis equipment by vibration.
[0004] The above device is directly fixed to the hemodialysis equipment to drive it to vibrate and defoam. When the vibration defoamer is in use, the vibration will be directly transmitted to other components and the infusion needle on the patient through the infusion tube. The vibration damping and isolation effect of the device is poor, and it is easy to cause loosening at the connection ends of the components and the infusion needle, thus affecting the safety of the hemodialysis process. In addition, the infusion tube connected to the hemodialysis equipment is not convenient to position, and the infusion tube is easily bent and blocked by external force, which is not conducive to the normal operation of the hemodialysis equipment. Therefore, those skilled in the art have provided a hemodialysis defoamer to solve the problems raised in the above background art. Summary of the Invention
[0005] The purpose of the present invention is to provide a hemodialysis defoamer to solve the problems that when the vibration defoamer operates, it will drive most components of the hemodialysis equipment to vibrate synchronously, which affects the safety during the use of the hemodialysis equipment, and the infusion tube connected to the hemodialysis equipment is not convenient to position and is prone to bending, affecting the normal operation of the equipment.
[0006] To achieve the above purpose, the present invention provides the following technical solution: A hemodialysis defoamer, comprising: Installation bracket, the installation bracket includes two sets of symmetrically arranged support plates up and down, and a vertical plate with multiple installation holes inside is integrally formed at the rear ends of the two sets of support plates; Vibration damping component, a set of vibration damping components are installed on the inner sides of the two sets of support plates, and a device bracket is fixedly installed between the two sets of vibration damping components; Vibration mechanism, two sets of symmetrically arranged vibration mechanisms are arranged inside the device bracket, and an adjusting member for controlling the reverse movement of the two sets of vibration mechanisms is installed on the device bracket. The two sets of vibration mechanisms are used to clamp the hemodialysis component that needs defoaming; Binding component, binding components for fixing the hemodialysis infusion tube are installed on the outer sides of the two sets of support plates. A card slot communicating with the inside of the binding component is opened inside the support plate. The card slot is used to place the hemodialysis infusion tube, and an anti-bending component is connected to one end of the binding component away from the support plate.
[0007] Preferably: The vibration damping component includes multiple shock absorbers connecting the support plate and the device bracket. A set of backing plates are installed on the multiple shock absorbers, and multiple springs sleeved outside the shock absorbers are installed between the backing plate and the device bracket.
[0008] Preferably: The vibration damping component further includes an adjusting knob threadedly connected to one of the shock absorbers. The backing plate is slidably installed up and down on the multiple shock absorbers, and the adjusting knob abuts against the backing plate.
[0009] Preferably: The device bracket includes a frame plate connected to the shock absorber and the spring. Multiple vertical rods are fixedly installed between the two sets of frame plates corresponding up and down. Connecting blocks for supporting the adjusting member are installed on the two vertical rods on the same side, and the vibration mechanism is slidably installed up and down on the vertical rods.
[0010] Preferably: The vibration mechanism includes an arc-shaped clamping plate connected to the adjusting member. A vibration motor is fixedly installed on the outer ring of the arc-shaped clamping plate. Sliders are connected to the top and bottom ends of the outer ring of the arc-shaped clamping plate through hinged movable rods, and the sliders are slidably installed up and down on the vertical rods.
[0011] Preferably: The adjusting member includes an adjusting screw rod rotatably installed between the two connecting blocks. Connecting plates sleeved on the adjusting screw rod are fixedly installed on the arc-shaped clamping plates of the two sets of vibration mechanisms. A threaded tube threadedly connected to the adjusting screw rod is fixedly installed on the connecting plate, and turntables are bonded to both ends of the adjusting screw rod.
[0012] Preferably: The binding component includes an arc-shaped baffle plate with one end connected to the support plate and the other end connected to the anti-bending component. A binding strip is bonded to the outer ring of the arc-shaped baffle plate. One side of the binding strip is provided with a hook surface of Velcro, and the other side of the binding strip is provided with a loop surface of Velcro.
[0013] Preferably, an anti-slip sheet is adhered to the inner ring of the arc-shaped baffle.
[0014] Preferably, the anti-folding assembly includes a fixed guiding ring integrally formed with the top end of the arc-shaped baffle. The fixed guiding ring is rotatably connected to a movable guiding ring through a hinge. Corresponding magnetic attraction sheets are fixedly installed at the docking sides of the fixed guiding ring and the movable guiding ring. Arc-shaped openings that turn outwards are integrally formed at the top ends of the fixed guiding ring and the movable guiding ring.
[0015] Preferably, a rubber pad is adhered to the outer side of the vertical plate.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, by setting a turntable to drive the adjusting screw to rotate, the adjusting screw drives the arc-shaped clamping plate, the vibration motor, the movable rod and the slider to move through the threaded pipe and the connecting plate. The corresponding two groups of arc-shaped clamping plates and vibration motors can conveniently clamp and fix blood dialysis components of different sizes. The vibration motor drives the arc-shaped clamping plate and its connecting components to vibrate, and the vibrating blood dialysis components can be efficiently defoamed. The disassembly and assembly structure of the blood dialysis components is simple and easy to operate, which is beneficial to the practical application of the device.
[0017] 2. In the present invention, damping components are installed at both the top end and the bottom end of the equipment support for the support vibration mechanism. The vibration of the vibration mechanism and the equipment support can drive the shock absorbers and springs at the top and bottom to stretch and contract. The shock absorbers and springs can be used to absorb and disperse vibration energy, reduce the influence of the vibration structure on surrounding components, thereby ensuring the safety of the defoamer combined blood dialysis equipment during use. And there is an adjusting knob for controlling the movement of the control pad, which can adjust the corresponding damping of the upper and lower two groups of damping components, improve the flexibility of the use adjustment of the damping structure. The damping components are also beneficial to improving the stability and durability of the vibration structure, and at the same time improve the efficiency of vibration defoaming.
[0018] 3. In the present invention, the infusion tubes connected to the top end and the bottom end of the blood dialysis component to be defoamed pass through the binding component and the anti-folding component. The binding component is used to fix the infusion tubes, which can prevent the vibrating blood dialysis component from transmitting vibration to other components through the infusion tubes. And the guiding rings and the arc-shaped openings of the anti-folding component are convenient for providing a guiding component for the infusion tubes, avoiding the infusion tubes from being bent and affecting the normal operation of the blood dialysis equipment. And it is convenient to open and close between the fixed guiding ring and the movable guiding ring, and it is convenient to position the infusion tube to be limited inside it. Description of the Drawings
[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a rear view of the overall structure of the present invention; Figure 3Schematic diagram of the device bracket, vibration mechanism and adjusting member structure of the present invention; Figure 4 Schematic diagram of the mounting bracket and shock absorption assembly structure of the present invention; Figure 5 Schematic diagram of the binding component and anti-fold component structure of the present invention.
[0020] In the figure: 10, mounting bracket; 101, support plate; 102, vertical plate; 20, shock absorption assembly; 201, shock absorber; 202, backing plate; 203, spring; 204, adjusting knob; 30, device bracket; 301, frame plate; 302, vertical rod; 303, connecting block; 40, vibration mechanism; 401, arc clamping plate; 402, vibration motor; 403, movable rod; 404, slider; 50, adjusting member; 501, adjusting screw; 502, connecting plate; 503, threaded tube; 504, turntable; 60, binding component; 601, arc baffle; 602, lashing strip; 603, magic tape; 70, anti-fold component; 701, fixed guide ring; 702, movable guide ring; 703, magnetic sheet; 704, arc-shaped opening; 11, mounting hole; 12, card slot; 13, anti-slip sheet; 14, rubber pad. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0022] Please refer to Figures 1 to 5, in the embodiment of the present invention, a blood dialysis defoamer includes an installation bracket 10, a vibration damping component 20, a vibration mechanism 40, a binding component 60, etc. The installation bracket 10 includes two groups of symmetrically arranged upper and lower support plates 101. A vertical plate 102 with multiple installation holes 11 formed inside is integrally formed at the rear ends of the two groups of support plates 101. A group of vibration damping components 20 are installed on the inner sides of the two groups of support plates 101 respectively. A device bracket 30 is fixedly installed between the two groups of vibration damping components 20. Two groups of symmetrically arranged left and right vibration mechanisms 40 are provided inside the device bracket 30. And an adjusting member 50 for controlling the reverse movement of the two groups of vibration mechanisms 40 is installed on the device bracket 30. The two groups of vibration mechanisms 40 are used to clamp the blood dialysis component to be defoamed. Binding components 60 for fixing the blood dialysis infusion tube are installed on the outer sides of the two groups of support plates 101 respectively. A card slot 12 communicating with the inside of the binding component 60 is formed inside the support plate 101. The card slot 12 is used to place the blood dialysis infusion tube. One end of the binding component 60 away from the support plate 101 is connected with an anti-bending component 70.
[0023] When the device is in use, the installation bracket 10 is fixed to the blood dialysis device or surrounding components, etc. When the blood dialysis device is running, the component to be defoamed can be placed between the two groups of vibration mechanisms 40. The operator rotates the adjustment component to drive the two groups of vibration mechanisms 40 to correspond to each other. The two groups of vibration mechanisms 40 can firmly clamp components of different sizes. The infusion tubes connected to the top and bottom of the blood dialysis component to be defoamed can be placed inside the binding component. The binding component is used to fix the infusion tube. The infusion tube extends to the outside of the defoamer through the anti-bending component 70, which can prevent the infusion tube from being bent.
[0024] When the vibration mechanism 40 is running, it can drive the blood dialysis component to be defoamed to vibrate. There is a certain length of infusion tube between the fixed points of the top and bottom infusion tubes and the blood dialysis component to be defoamed, which is convenient for realizing the free vibration defoaming of the blood dialysis component. When the vibration mechanism 40 is running, its vibration will be transmitted to the adjusting member 50 and the device bracket 30 connected to it. And the vibration damping components 20 arranged at the top and bottom of the device bracket 30 can provide an effective shock absorption and buffering effect, preventing the vibration of the device from being transmitted to the installation bracket 10 and its connected devices, and preventing the blood dialysis component to be defoamed from transmitting vibration to other components through the infusion tube. Vibration defoaming destroys the surface tension of the foam through high-frequency vibration, so that the foam quickly breaks and merges back into the liquid, which is beneficial to realizing an efficient defoaming effect.
[0025] In one embodiment, refer to Figures 1 to 4, Specifically, the vibration damping assembly 20 includes multiple shock absorbers 201 connecting the support plate 101 and the equipment bracket 30. A group of backing plates 202 are installed on the multiple shock absorbers 201. Multiple springs 203 sleeved outside the shock absorbers 201 are installed between the backing plates 202 and the equipment bracket 30. Further, the vibration damping assembly 20 further includes an adjusting knob 204 threadedly connected to one of the shock absorbers 201. The backing plates 202 are slidably installed up and down on the multiple shock absorbers 201, and the adjusting knob 204 abuts against the backing plates 202.
[0026] When the vibration mechanism 40 drives the equipment bracket 30 to vibrate, the equipment bracket 30 drives the multiple shock absorbers 201 and springs 203 at the top and bottom to expand and contract. The shock absorbers 201 and springs 203 are used to absorb and disperse vibration energy. By rotating the adjusting knob 204, the backing plates 202 can be pushed to slide on the shock absorbers 201. Adjusting the upper and lower adjusting knobs 204 can conveniently control the corresponding damping of the upper and lower vibration damping assemblies 20, improving the flexibility of adjustment of the vibration damping structure. Moreover, the vibration damping assembly 20 is also beneficial to improving the stability and durability of the vibration structure.
[0027] Refer to Figures 1 to 3 , Correspondingly, the equipment bracket 30 includes a frame plate 301 connected to the shock absorbers 201 and springs 203. Multiple vertical rods 302 are fixedly installed between the upper and lower corresponding frame plates 301. Connection blocks 303 for supporting the adjusting member 50 are installed on two vertical rods 302 on the same side. The vibration mechanism 40 is slidably installed up and down on the vertical rods 302. The equipment bracket 30 is used to support the vibration mechanism 40 and the adjusting member 50, and is used to connect the upper and lower vibration damping assemblies 20. The equipment bracket 30 can be made of materials such as plastic or stainless steel. The fixation between plastic components can be through bonding, and the fixation between stainless steel materials can be through welding, etc.
[0028] On the basis of the above embodiments, refer to Figures 1 to 3 , Specifically, the vibration mechanism 40 includes an arc-shaped clamping plate 401 connected to the adjusting member 50. A vibration motor 402 is fixedly installed on the outer ring of the arc-shaped clamping plate 401. The top and bottom of the outer ring of the arc-shaped clamping plate 401 are both connected with sliders 404 through articulated movable rods 403. The sliders 404 are slidably installed up and down on the vertical rods 302. The vibration motor 402 can be connected to an external power supply through a power source, and the circuit connection method is prior art and will not be elaborated here too much. The vibration motor 402 can also be a vibration motor, etc. in the prior art. The size of the vibration motor 402 can be selected as a corresponding micro-miniature vibration motor 402 according to the overall actual size of the device. Starting the vibration motor 402 can drive the arc-shaped clamping plate 401 and its connection structure to vibrate. The two opposite arc-shaped clamping plates 401 are convenient for firmly clamping blood dialysis components of different sizes.
[0029] Among them, the adjusting member 50 includes an adjusting screw rod 501 rotatably installed between two groups of connecting blocks 303. A connecting plate 502 sleeved on the adjusting screw rod 501 is fixedly installed on the arc-shaped clamping plates 401 of the two groups of vibration mechanisms 40. A threaded pipe 503 threadedly connected to the adjusting screw rod 501 is fixedly installed on the connecting plate 502. Turntables 504 are bonded to both ends of the adjusting screw rod 501. An operator can rotate the adjusting screw rod 501 through the turntables 504 on both sides. The two groups of symmetric internal threads on the adjusting screw rod 501 can drive the two threaded pipes 503 and the connecting plate 502 to move in opposite directions. The connecting plate 502 can drive the arc-shaped clamping plates 401 and the vibration motor 402 to displace. When the arc-shaped clamping plates 401 move, the slider 404 can be driven to slide on the vertical rod 302 through the movable rod 403, which can improve the stability of the movement of the arc-shaped clamping plates 401. The operation structure is simple and convenient to realize the quick fixing and disassembly of the vibration mechanism 40 to the hemodialysis component.
[0030] In one embodiment, referring to Figures 1 to 2 and Figure 5 , specifically, the binding component 60 includes an arc-shaped baffle 601 with one end connected to the support plate 101 and the other end connected to the anti-bending component 70. A binding strip 602 is bonded to the outer circle of the arc-shaped baffle 601. One side of the binding strip 602 is provided with a rough surface of the magic tape 603, and the other side of the binding strip 602 is provided with a hook surface of the magic tape 603. The infusion tubes connected to the top and bottom of the hemodialysis component can be placed into the inside of the arc-shaped baffle 601 through the card slots 12. There is a certain bending vibration length between the fixed part of the infusion tube and the fixed hemodialysis component. The operator uses the binding strip 602 to firmly bind the infusion tube to the inside of the arc-shaped baffle 601, and the magic tape 603 facilitates the quick positioning of the binding strip 602 itself.
[0031] Furthermore, an anti-slip sheet 13 is bonded to the inner circle of the arc-shaped baffle 601. The anti-slip sheet 13 can be made of a sponge material with rubber anti-slip on the surface, etc. It has good anti-slip performance and certain support elasticity. The material of the binding strip 602 can also be the same as that of the anti-slip sheet 13, further improving the stability of fixing the infusion tube.
[0032] Correspondingly, the anti-bending assembly 70 includes a fixed guiding ring 701 integrally formed with the top end of the arc-shaped baffle 601. The fixed guiding ring 701 is rotatably connected with a movable guiding ring 702 through a hinge. Corresponding magnetic attraction sheets 703 are fixedly installed at the docking sides of the fixed guiding ring 701 and the movable guiding ring 702. Arc-shaped openings 704 turned outwards are integrally formed at the top ends of the fixed guiding ring 701 and the movable guiding ring 702. Open the movable guiding ring 702 and place the infusion tube into the interior of the fixed guiding ring 701. The docking and fixation of the fixed guiding ring 701 and the movable guiding ring 702 are realized through the corresponding magnetic attraction sheets 703. The corresponding magnetic attraction sheets 703 can also adopt structures such as snap fasteners that are easy to switch in the prior art. The smooth arc-shaped openings 704 at the top of the guiding ring facilitate the support of the bent infusion tube, avoiding the infusion tube from being bent and affecting the normal operation of the hemodialysis equipment.
[0033] Refer to Figures 1 to 2 , a rubber pad 14 is bonded to the outer side of the vertical plate 102. The mounting bracket 10 is fixed to the support member. The rubber pad 14 on the side of the mounting bracket 10 abuts against the support member. The rubber pad 14 can further provide a shock absorption effect. The mounting bracket 10 can be fixed to the member by passing bolts and other members through the mounting holes 11. The mounting bracket 10 can also be combined with other clamping members that are convenient for fixation, facilitating the overall fixation of the device.
[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A hemodialysis defoamer, characterized in that: Comprising: An installation bracket (10), the installation bracket (10) includes two sets of symmetrically arranged upper and lower support plates (101), and a vertical plate (102) with multiple sets of installation holes (11) internally opened is integrally formed at the rear ends of the two sets of support plates (101); A vibration damping component (20), one set of vibration damping components (20) is installed on the inner sides of the two sets of support plates (101), and an equipment bracket (30) is fixedly installed between the two sets of vibration damping components (20); A vibration mechanism (40), two sets of symmetrically arranged left and right vibration mechanisms (40) are provided inside the equipment bracket (30), and an adjusting member (50) for controlling the reverse movement of the two sets of vibration mechanisms (40) is installed on the equipment bracket (30), and the two sets of vibration mechanisms (40) are used for clamping a hemodialysis component that needs to be defoamed; A binding component (60), a binding component (60) for fixing a hemodialysis infusion tube is installed on the outer sides of the two sets of support plates (101), a card slot (12) communicating with the inside of the binding component (60) is opened inside the support plate (101), the card slot (12) is used for placing the hemodialysis infusion tube, and an anti-bending component (70) is connected to one end of the binding component (60) away from the support plate (101).
2. The blood dialysis defoamer according to claim 1, characterized in that: The vibration damping component (20) includes multiple shock absorbers (201) connecting the support plate (101) and the equipment bracket (30), a cushion plate (202) is installed on the multiple shock absorbers (201), and multiple springs (203) sleeved outside the shock absorbers (201) are installed between the cushion plate (202) and the equipment bracket (30).
3. The blood dialysis defoamer according to claim 2, characterized in that: The vibration damping component (20) further includes an adjusting knob (204) threadedly connected to one of the shock absorbers (201), the cushion plate (202) is slidably installed up and down on the multiple shock absorbers (201), and the adjusting knob (204) abuts against the cushion plate (202).
4. The blood dialysis defoamer according to claim 3, characterized in that: The equipment bracket (30) includes a frame plate (301) connected to the shock absorber (201) and the spring (203), multiple vertical rods (302) are fixedly installed between the two sets of corresponding upper and lower frame plates (301), a connecting block (303) for supporting the adjusting member (50) is installed on the two sets of vertical rods (302) on the same side, and the vibration mechanism (40) is slidably installed up and down on the vertical rod (302).
5. The blood dialysis defoamer according to claim 4, wherein: The vibration mechanism (40) includes an arc-shaped clamping plate (401) connected to the adjusting member (50), a vibration motor (402) is fixedly installed on the outer ring of the arc-shaped clamping plate (401), the top and bottom of the outer ring of the arc-shaped clamping plate (401) are connected with sliders (404) through articulated movable rods (403), and the sliders (404) are slidably installed up and down on the vertical rod (302).
6. The blood dialysis defoamer according to claim 5, wherein: The adjusting member (50) includes an adjusting screw rod (501) rotatably installed between two sets of connecting blocks (303). A connecting plate (502) sleeved on the adjusting screw rod (501) is fixedly installed on the arc-shaped clamping plates (401) of the two sets of vibration mechanisms (40). A threaded tube (503) threadedly connected to the adjusting screw rod (501) is fixedly installed on the connecting plate (502). Turntables (504) are bonded to both ends of the adjusting screw rod (501).
7. A hemodialysis defoamer according to any one of claims 1-6, characterized in that: The binding assembly (60) includes an arc-shaped baffle (601) with one end connected to the support plate (101) and the other end connected to the anti-folding assembly (70). A binding strip (602) is bonded to the outer circle of the arc-shaped baffle (601). A rough surface of a magic tape (603) is provided on one side of the binding strip (602), and a hook surface of the magic tape (603) is provided on the other side of the binding strip (602).
8. A blood dialysis defoamer according to claim 7, characterized in that: An anti-slip sheet (13) is bonded to the inner circle of the arc-shaped baffle (601).
9. The blood dialysis defoamer according to claim 7, wherein: The anti-folding assembly (70) includes a fixed guiding ring (701) integrally formed with the top end of the arc-shaped baffle (601). The fixed guiding ring (701) is rotatably connected to a movable guiding ring (702) through a hinge. Corresponding magnetic attraction sheets (703) are fixedly installed at the docking sides of the fixed guiding ring (701) and the movable guiding ring (702). Arc-shaped openings (704) turned outwards are integrally formed at the top ends of the fixed guiding ring (701) and the movable guiding ring (702).
10. A blood dialysis defoamer according to claim 1, characterized in that: A rubber pad (14) is bonded to the outer side of the vertical plate (102).
Citation Information
Patent Citations
A hemodialysis defoamer
CN117205390B