Magnetic transmission type centrifugal pump and ophthalmologic cutting equipment

Abstract

The magnetic transmission type centrifugal pump comprises a pressure regulating part and a magnetic driving part, the pressure regulating part comprises a fluid box and a rotating wheel, a pump cavity is formed in the fluid box in a concave mode, the rotating wheel is coaxially arranged in the pump cavity in a rotatable mode, the outer surface of the rotating wheel is evenly divided into a set of fan-shaped flow dividing areas, and the fan-shaped flow dividing areas are arranged in the pump cavity. A connecting port is formed in the axis of the outer surface of the rotating wheel, an input runner is formed in the axis of the pump cavity, and one side of the pump cavity communicates with an output runner; the magnetic driving part comprises a motor and a magnetic head, the magnetic head is fixedly arranged at the end of a motor shaft of the motor, the magnetic head and the fluid box are arranged in a spaced mode, the magnetic head and the rotating wheel are coaxially arranged, the opposite end faces of the magnetic head and the rotating wheel are each provided with a set of magnets, and magnetic end faces with different magnetisms are formed between the magnets. The motor can drive the rotating wheel to rotate synchronously through the magnetic head so as to adjust the pressure. According to the scheme, the motor can control the rotating wheel to rotate through magnetic force, transmission consistency can be guaranteed, infection can be avoided, replacement is convenient, and use safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a magnetic transmission centrifugal pump and ophthalmic cutting equipment. Background Art

[0002] During ophthalmic surgeries such as vitrectomy and phacoemulsification, it is often necessary to drain waste fluid from the eye and simultaneously replenish it to maintain normal intraocular pressure and prevent damage to the eyeball. During surgery, waste fluid extraction and collection, as well as irrigation fluid delivery and replenishment, are often performed through consumable fluid cartridges. The control unit regulates these processes to maintain stable intraocular pressure.

[0003] Commonly used pressure-regulating mechanisms for controlling infusion pressure include adjusting the hanging height of the infusion bottle, squeezing the infusion bag, pressurizing the infusion fluid in the consumable fluid box through air pressure, and pressurizing the peristaltic pump. On the one hand, the pressure-regulating mechanism needs to be kept clean during surgery; on the other hand, the pressure-regulating mechanism needs to be disassembled and replaced after the surgery to ensure safety for the next use and avoid the risk of infection caused by repeated use. As disclosed in announcement number CN 113710209 B, the pump body structure is complex and not convenient for disassembly and assembly. How to accurately feedback pressure regulation and ensure ease and safety of use is an urgent problem that needs to be solved. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a magnetic transmission centrifugal pump and an ophthalmic cutting device.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A magnetic drive centrifugal pump includes a pressure regulating unit and a magnetic drive unit. The pressure regulating unit includes a fluid box and a runner. A pump chamber matching the runner is recessed in the fluid box. The runner is rotatably coaxially arranged in the pump chamber. The outer surface of the runner is evenly divided into a group of fan-shaped flow diversion areas. The outer surface axis of the runner is provided with a connection port connected to a group of the fan-shaped flow diversion areas. The axis of the pump chamber is provided with an input flow channel connected to the connection port. One side of the pump chamber is connected to an output flow channel that can be connected to the fan-shaped flow diversion areas. The magnetic drive unit includes a motor and a magnetic head. The magnetic head is fixed to the end of the motor shaft of the motor. The magnetic head is spaced apart from the fluid box and coaxially arranged with the runner. A group of magnets are respectively provided on the opposite end faces of the magnetic head and the runner, forming magnetic end faces with different magnetic properties between the two, so that the motor can drive the runner to rotate synchronously through the magnetic head, and the runner adjusts the pressure according to the rotation speed.

[0007] Preferably, the outer surface of the runner is equally divided into the fan-shaped diversion areas by a group of circumferentially evenly distributed arc-shaped partition walls, and the width of each fan-shaped diversion area gradually increases from the connecting port to its edge.

[0008] Preferably, the inner ends of a group of the arc-shaped partition walls are not connected to form a connection port that is connected to a group of the fan-shaped diversion areas.

[0009] Preferably, a group of first magnets are evenly spaced between the inner surface and the outer surface of the rotating wheel, and the magnetic properties of two adjacent first magnets are different.

[0010] Preferably, a solid plate body is formed between the inner surface and the outer surface of the rotating wheel, and a group of slots matching the first magnets are formed in the solid plate body, and a group of the first magnets are inserted into the installation slots one by one.

[0011] Preferably, a group of limiting grooves are provided on the front end surface of the magnetic head, each of the limiting grooves is embedded with a second magnet, and the magnetic properties of two adjacent second magnets are different, and the positions of a group of second magnets match those of the first magnet.

[0012] Preferably, a group of the first magnets and the second magnets is a corresponding even number.

[0013] Preferably, each of the fan-shaped diversion areas is directly opposite to one of the first magnets.

[0014] Preferably, the output flow channel extends in a direction tangent to the circular inner contour of the pump chamber.

[0015] The ophthalmic cutting device comprises at least a main unit arranged in its device housing and the magnetic transmission centrifugal pump as described above, wherein the magnetic drive unit is built into the main unit, and the pressure regulating unit is external to the main unit. A groove is provided on the shell of the main unit, and the fluid box is detachably embedded in the groove. The input flow channel and the output flow channel are respectively connected to the fluid flow channel in the device housing. The magnetic head is coaxially arranged with the rotor, and the magnetic end faces of the two are arranged opposite to each other. The motor can drive the rotor to rotate through the magnetic head.

[0016] The beneficial effects of the present invention are mainly reflected in:

[0017] 1. A magnetic head is set on the motor shaft of the motor, and a matching magnetic end surface is formed between the magnetic head and the rotor, so that the motor can control the rotation of the rotor through magnetism, realizing contactless transmission. On the one hand, this transmission method can use magnetism to enable the magnetic drive unit to quickly respond to pressure regulation needs and ensure the stability and effectiveness of the transmission; on the other hand, it can avoid direct contact between the magnetic drive unit and the pressure regulating unit, ensuring the cleanliness of the pressure regulating unit and avoiding the risk of infection. In addition, the pressure regulating unit can be directly adsorbed to the outside of the main body shell through magnetism, which facilitates the replacement and installation of the entire pressure regulating unit and ensures safe use.

[0018] 2. The outer surface of the impeller uses arc-shaped partition walls to form a set of fan-shaped diversion areas. At the same time, the output flow channel is extended in a tangential manner to the edge of the pump chamber. The fan-shaped diversion area is easier to match the extension direction of the output flow channel, so as to facilitate the outflow of liquid inside the pump chamber and make it easier to use centrifugal force to reduce the occurrence of blockage.

[0019] 3. The first magnet and the second magnet are matched in quantity and position to facilitate stable cooperation between the magnetic head and the rotating wheel and consistency of effective transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the utility model is further described below with reference to the accompanying drawings:

[0021] Figure 1 : Schematic diagram of a magnetic drive centrifugal pump;

[0022] Figure 2 : Schematic diagram of ophthalmic cutting equipment;

[0023] Figure 3 : Perspective view of the fluid box. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by a person skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0025] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0026] like Figure 1 and Figure 3 As shown, the utility model discloses a magnetic transmission centrifugal pump, including a pressure regulating part and a magnetic drive part, the pressure regulating part includes a fluid box 6 and a runner 4, the fluid box 6 is recessed with a pump chamber 3 that matches the runner 4, the runner 4 is rotatably coaxially arranged in the pump chamber 3, the outer surface of the runner 4 is evenly divided into a group of fan-shaped diversion areas 400, the outer surface of the runner 4 is provided with a connecting port 401 connected to a group of the fan-shaped diversion areas 400, the axis of the pump chamber 3 is provided with an input flow channel 301 connected to the connecting port 401, the pump One side of the cavity 3 is connected to an output flow channel 302 that can be connected to the fan-shaped diversion area 400; the magnetic drive part includes a motor 1 and a magnetic head 2, the magnetic head 2 is fixed to the end of the motor shaft of the motor 1, the magnetic head 2 is spaced apart from the fluid box 6, and the magnetic head 2 is coaxially arranged with the rotor 4, and a group of magnets are respectively provided on the opposite end faces of the magnetic head 2 and the rotor 4, forming magnetic end faces with different magnetic properties between the two, so that the motor 1 can drive the rotor 4 to rotate synchronously through the magnetic head 2, and the rotor 4 adjusts the pressure according to the rotation speed.

[0027] In this solution, a magnetic head 2 is provided on the motor shaft of the motor 1, and a matching magnetic end face is formed between the magnetic head 2 and the rotor 4, so that the motor 1 can control the rotation of the rotor 3 by magnetic force, thereby realizing contactless transmission. On the one hand, such a transmission method can utilize magnetism to enable the magnetic drive unit to quickly respond to pressure regulation requirements and ensure the stability and effectiveness of the transmission; on the other hand, it can avoid direct contact between the magnetic drive unit and the pressure regulating unit, thereby ensuring the cleanliness of the pressure regulating unit and avoiding the risk of infection.

[0028] Specific examples Figure 1As shown, the outer surface of the runner 4 is divided equally into the fan-shaped flow diversion areas 400 by a set of circumferentially evenly distributed arcuate partition walls 402. The width of each fan-shaped flow diversion area 400 gradually increases from the connection port 401 toward its edge. The arcuate structure of the arcuate partition walls 402 is more conducive to reducing the impact of the internal fluid on the partition walls 402 during the rotation of the runner 4, thereby facilitating the smooth rotation of the runner 4.

[0029] Furthermore, the inner ends of a group of the arc-shaped partition walls 402 are not connected, forming a connection port 401 connected to a group of the fan-shaped diversion areas 400 to facilitate the communication between the input flow channel 301 and the output flow channel 302 .

[0030] A group of first magnets 403 are evenly spaced between the inner and outer surfaces of the rotating wheel 4, with adjacent first magnets 403 having different magnetic properties. Preferably, a solid plate is formed between the inner and outer surfaces of the rotating wheel 4, and a group of slots 404 are formed within the solid plate to match the first magnets 403. The first magnets 403 are inserted into the mounting slots 404 one by one. This structure ensures that the first magnets and the rotating wheel 4 form a tight, integrated whole, ensuring overall rigidity.

[0031] Furthermore, a group of limiting grooves 201 are provided on the front end surface of the magnetic head 2, and each of the limiting grooves 201 is embedded with a second magnet 202, and the magnetic properties of two adjacent second magnets 201 are different. The position of a group of second magnets 202 matches the first magnet 403, so that a magnetic attraction is formed between the magnetic head 2 and the rotating wheel 4 to ensure the consistency of their rotation.

[0032] Preferably, a group of the first magnet 403 and the second magnet 201 is a corresponding even number, such as 2 poles, 4 poles, 8 poles, etc., so that a stable magnetic adsorption force is formed between the magnetic head 2 and the rotating wheel 4, thereby ensuring the consistency and reliability of the synchronous rotation of the two.

[0033] A group of at least two fan-shaped diversion areas 400 are distributed axially symmetrically on the outer surface of the rotor 4 to generate uniform output pressure. In a preferred embodiment, each fan-shaped diversion area 400 is directly opposite to one of the first magnets 403 to further ensure that the fan-shaped diversion areas 400 are uniformly subjected to the output centrifugal force during the rotation of the rotor 4.

[0034] Furthermore, the output flow channel 302 extends in a direction tangent to the circular inner contour of the pump chamber 3. This extension method is easier to cooperate with the fan-shaped diversion area 400 to facilitate the outflow of liquid inside the pump chamber 3 and to utilize centrifugal force to reduce blockage.

[0035] Further, such as Figure 2 As shown, this solution also discloses an ophthalmic cutting device, which at least includes a main unit 5 and a magnetic transmission centrifugal pump as described above, which is arranged in the housing of the device. The magnetic drive unit is built into the main unit 5, and the pressure regulating unit is external to the main unit 5. A groove 501 is provided on the housing of the main unit 5. The fluid box 6 is detachably embedded in the groove 501. The input flow channel 301 and the output flow channel 302 are respectively connected to the fluid flow channel in the device housing. The magnetic head 2 is coaxially arranged with the runner 4, and the magnetic end faces of the two are arranged oppositely. The motor 1 can drive the runner 4 to rotate through the magnetic head 2. Such a structure allows the pressure regulating unit to be directly arranged outside the housing of the main unit 5, so as to facilitate the replacement and installation of the pressure regulating unit as a whole by using magnetism, thereby ensuring safe use.

[0036] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0037] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Magnetic drive centrifugal pump, characterized by: The invention comprises a pressure regulating part and a magnetic driving part, wherein the pressure regulating part comprises a fluid box (6) and a runner (4), wherein a pump chamber (3) matching the runner (4) is concavely provided in the fluid box (6), and the runner (4) is rotatably coaxially arranged in the pump chamber (3), and the outer surface of the runner (4) is evenly divided into a group of fan-shaped diversion areas (400), and the outer surface axis of the runner (4) is provided with a connecting port (401) connected to a group of fan-shaped diversion areas (400), and the axis of the pump chamber (3) is provided with an input flow channel (301) connected to the connecting port (401), and one side of the pump chamber (3) is connected to the fan-shaped diversion areas (400). The output flow channel (302) is connected to the fan-shaped diversion area (400); the magnetic drive unit includes a motor (1) and a magnetic head (2), the magnetic head (2) is fixed to the end of the motor shaft of the motor (1), the magnetic head (2) and the fluid box (6) are spaced apart, and the magnetic head (2) and the rotating wheel (4) are coaxially arranged, and a group of magnets are respectively provided on the opposite end faces of the magnetic head (2) and the rotating wheel (4), and magnetic end faces with different magnetic properties are formed between the two, so that the motor (1) can drive the rotating wheel (4) to rotate synchronously through the magnetic head (2), and the rotating wheel (4) performs pressure adjustment through the rotation speed.

2. The magnetic drive centrifugal pump according to claim 1, characterized in that: The outer surface of the runner (4) is equally divided into the fan-shaped diversion areas (400) by a group of circumferentially evenly distributed arc-shaped partition walls (402), and the width of each fan-shaped diversion area (400) gradually increases from the connecting port (401) to its edge.

3. The magnetic drive centrifugal pump according to claim 2, characterized in that: The inner ends of a group of the arc-shaped partition walls (402) are not connected, forming a connection port (401) that is connected to a group of the fan-shaped diversion areas (400).

4. The magnetic drive centrifugal pump according to claim 3, characterized in that: A group of first magnets (403) are evenly spaced between the inner surface and the outer surface of the rotating wheel (4), and the magnetic properties of two adjacent first magnets (403) are different.

5. The magnetic transmission centrifugal pump according to claim 4, characterized in that: A solid plate body is formed between the inner surface and the outer surface of the rotating wheel (4), and a group of slots (404) matching the first magnets (403) are formed in the solid plate body, and a group of the first magnets (403) are inserted into the slots (404) one by one.

6. The magnetic drive centrifugal pump according to claim 5, characterized in that: The front end surface of the magnetic head (2) is provided with a group of limiting grooves (201), each of the limiting grooves (201) is embedded with a second magnet (202), and the magnetic properties of two adjacent second magnets (202) are different, and the position of a group of second magnets (202) matches that of the first magnet (403).

7. The magnetic drive centrifugal pump according to claim 6, characterized in that: A group of the first magnets (403) and the second magnets (202) is a corresponding even number.

8. The magnetic drive centrifugal pump according to claim 7, characterized in that: Each of the fan-shaped diversion areas (400) is directly opposite to one of the first magnets (403).

9. The magnetic drive centrifugal pump according to claim 1, characterized in that: The output flow channel (302) extends in a direction tangent to the circular inner contour of the pump chamber (3).

10. Ophthalmic cutting equipment, characterized in that: The invention comprises at least a main unit (5) arranged in its device housing and a magnetic transmission centrifugal pump as described in any one of claims 1 to 9, wherein the magnetic drive unit is built into the main unit (5), the pressure regulating unit is external to the main unit (5), a groove (501) is provided on the housing of the main unit (5), the fluid box (6) is detachably embedded in the groove (501), the input flow channel (301) and the output flow channel (302) are respectively connected to the fluid flow channel in the device housing, the magnetic head (2) and the impeller (4) are coaxially arranged, and the magnetic end faces of the two are arranged opposite to each other, and the motor (1) can drive the impeller (4) to rotate through the magnetic head (2).

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