Magnetic suspension stator, driving pump and in-vitro auxiliary circulation system

Abstract

The utility model relates to a magnetic suspension stator, a driving pump and an in-vitro auxiliary circulation system. The magnetic suspension stator comprises a stator coil, the stator coil is provided with an installation groove, a first surface and a second surface, the first surface and the second surface are located on the opposite surfaces of the stator coil, and the first surface is arranged in an arc shape and protrudes in the direction away from the installation groove; a first edge and a second edge are arranged at the joint of the second surface and the stator coil in the circumferential direction, and the second surface does not protrude out of the connecting line of the first edge and the second edge at the second surface; and the stator core is arranged in the mounting groove, and two ends of the stator core are exposed out of the mounting groove. One side of the stator coil protrudes, and the other side of the stator coil does not protrude, so that the size of the stator coil is reduced as much as possible, and the purpose of reducing the overall size of the magnetic suspension stator is achieved. After the magnetic suspension stator is installed on a pump machine of the driving pump, the space of the magnetic suspension stator in the pump machine can be reduced, the size of the pump machine is reduced, and miniaturization design of the driving pump is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a magnetically suspended stator, a driving pump and an extracorporeal assisted circulation system. Background Art

[0002] Extracorporeal circulatory assist systems, such as the extracorporeal membrane oxygenation system, are extracorporeal circulation technologies that have been removed from the cardiac operating room. The principle is to draw venous blood from the body out of the body, oxygenate it through an artificial heart-lung bypass made of special materials, and then inject it into the patient's arterial or venous system. The system plays the role of extracorporeal respiratory support or cardiac support, maintaining oxygenation and blood supply to human organs and tissues. The extracorporeal circulatory assist system usually includes an intravascular cannula, a connecting tube, a drive pump, an oxygenator (membrane lung), and a host.

[0003] Among them, the driving pump is generally composed of a pump head and a driving pump machine / power pump for driving the pump head. In the current driving pump, the pump machine drives the impeller in the pump head to rotate by magnetic coupling. The impeller promotes the flow of blood by rotating or other mechanical movements that push the liquid, thereby assisting or replacing the heart to maintain blood circulation. In the stator of the pump machine, the main coil is saddle-shaped or convex on both sides, which will cause the stator to occupy a large space, resulting in an increase in the volume of the pump machine. Summary of the invention

[0004] Based on this, it is necessary to provide a magnetic levitation stator, a driving pump and an extracorporeal assisted circulation system to address the problem that the large size of the coil structure in the current pump leads to an increase in the volume of the pump. The magnetic levitation stator has a smaller size, thereby reducing the space occupied in the pump, thereby reducing the volume of the pump and facilitating the miniaturization design of the driving pump.

[0005] A magnetic suspension stator, comprising:

[0006] a stator coil, the stator coil having a mounting slot, a first surface and a second surface, the first surface and the second surface being located on surfaces opposite to the stator coil, the first surface being arranged in an arc shape and protruding in a direction away from the mounting slot, the second surface and the stator coil having a first edge and a second edge at a circumferential connection thereof, and the second surface not protruding from a line connecting the first edge and the second edge at the second surface; and

[0007] The stator core is arranged in the installation slot, and both ends of the stator core are exposed from the installation slot.

[0008] In one embodiment of the present application, the stator coil includes a first body, a second body, a first connecting body and a second connecting body, wherein the first connecting body and the second connecting body respectively connect the first body and the second body to form the stator coil with a closed cross section;

[0009] The first surface is located on the surface of the first body away from the second body, the second surface is located on the surface of the second body away from the first body, the connection between the first connecting body and the second body is the first edge, the connection between the second connecting body and the second body is the second edge, and the second surface does not protrude from the line between the first edge and the second edge.

[0010] In an embodiment of the present application, the central angle of the first surface ranges from 30° to 180°.

[0011] In an embodiment of the present application, the second surface is arranged in an arc shape and protrudes toward the direction of the installation groove.

[0012] In an embodiment of the present application, the central angle of the second surface is less than or equal to the central angle of the first surface, or the central angle of the second surface is greater than the central angle of the first surface.

[0013] In an embodiment of the present application, the second surface is a plane.

[0014] In one embodiment of the present application, the stator core includes a vertical portion and a boot portion, the vertical portion is disposed in the mounting groove, and the boot portion is disposed at both ends of the vertical portion and is located outside the mounting groove.

[0015] In an embodiment of the present application, the boot portion has a third surface facing the second surface, the third surface is coplanar with the second surface, or the third surface is recessed relative to the second surface.

[0016] In one embodiment of the present application, the vertical portion and the boot portion are connected by threading, adhesive connection, welding connection or riveting connection.

[0017] A driving pump comprises a pump head, a pump machine and a magnetic levitation stator as described in any of the above technical features, wherein the magnetic levitation stator is arranged at the top of the pump machine, the bottom of the pump head has a rotor, the pump head can be detachably installed on the top of the pump machine, and the magnetic levitation stator provides rotational force for the rotor to drive the impeller in the pump head to rotate.

[0018] In one embodiment of the present application, there are multiple magnetic suspension stators, and the multiple magnetic suspension stators are arranged around the central axis of the pump, and there is a distance between two adjacent magnetic suspension stators.

[0019] An extracorporeal assisted circulation system comprises a host, an oxygenator and a driving pump as described in any of the above technical features, wherein the outlet pipe of the driving pump is connected to the oxygenator, the host is respectively connected to the driving pump and the oxygenator, and controls the operation of the driving pump and the oxygenator.

[0020] After adopting the above technical solution, this application has at least the following technical effects:

[0021] The magnetic levitation stator, driving pump and extracorporeal assisted circulation system of the present application, in which the stator coil has an installation slot, the stator core is installed in the installation slot, and the stator core and the stator coil cooperate to generate a rotating magnetic field to output a rotating force with the rotor. At the same time, the first surface of the stator coil is convexly arranged to the outside, and the second surface and the stator coil have a first edge and a second edge at the axial connection, and the second surface does not protrude from the line connecting the first edge and the second edge, that is, only one side of the stator coil is convex, so as to reduce the size of the stator coil.

[0022] The magnetic levitation stator has a stator coil with a protruding structure on one side and a non-protruding structure on the other side, so as to reduce the size of the stator coil as much as possible, thereby achieving the purpose of reducing the overall size of the magnetic levitation stator. When the magnetic levitation stator is installed in the pump machine of the driving pump, it can reduce the space in the pump machine, reduce the volume of the pump machine, and facilitate the miniaturization design of the driving pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of a driving pump used in the magnetic levitation stator of the present application.

[0024] FIG. 2 is a schematic diagram of a magnetic suspension stator according to an embodiment of the present application viewed from one angle.

[0025] FIG. 3 is a schematic diagram of the magnetic suspension stator shown in FIG. 2 viewed from another angle.

[0026] FIG. 4 is a schematic diagram of the stator coil in the magnetic suspension stator shown in FIG. 2 viewed from an angle.

[0027] FIG. 5 is a schematic diagram of the stator core in the magnetic suspension stator shown in FIG. 2 viewed from an angle.

[0028] FIG. 6 is a schematic diagram of the stator coil shown in FIG. 4 viewed from another angle.

[0029] FIG. 7 is a schematic diagram of the stator core shown in FIG. 5 viewed from another angle.

[0030] FIG. 8 is a cross-sectional view of the magnetic suspension stator shown in FIG. 2 .

[0031] Among them: 10, driving pump; 100, magnetic levitation stator; 110, stator coil; 111, mounting groove; 112, first surface; 113, second surface; 1131, first edge; 1132, second edge; 114, first body; 115, second body; 116, first connecting body; 117, second connecting body; 120, stator core; 121, vertical part; 122, boot; 200, pump head; 300, pump machine; A, baseline; B, first end; C, second end. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0038] Referring to Figures 1 to 3, the present application provides a magnetic levitation stator 100. Figure 1 is a schematic diagram of a driving pump 10 to which the magnetic levitation stator 100 of the present application is applied, Figure 2 is a schematic diagram of a magnetic levitation stator 100 of an embodiment of the present application viewed from one angle, and Figure 3 is a schematic diagram of the magnetic levitation stator 100 shown in Figure 2 viewed from another angle. The magnetic levitation stator 100 is applied to a pump machine 300 of the driving pump 10, and is magnetically coupled with the rotor of a pump head 200 in the driving pump 10. Of course, in other embodiments of the present application, the magnetic levitation stator 100 can also be applied to other structures that require the use of a stator. The present application only takes the application of the magnetic levitation stator 100 to the driving pump 10 as an example for explanation.

[0039] It is understandable that in the current stator of the driving pump, the main coil is saddle-shaped or convex on both sides, which will cause the stator to occupy a large space and increase the volume of the pump. To this end, the present application provides a new type of magnetic levitation stator 100, which has a smaller size, thereby reducing the space occupied in the pump 300, so as to reduce the volume of the pump 300 and facilitate the miniaturization design of the driving pump 10. The specific structure of the magnetic levitation stator 100 of an embodiment is introduced below.

[0040] In order to better describe the structure of the magnetic levitation stator 100, the structure of the driving pump 10 is first introduced here. Referring to Figures 1 and 2, the driving pump 10 includes a pump head 200 and a pump machine 300, and the pump head 200 is detachably mounted on the top of the pump machine 300. The magnetic levitation stator 100 is arranged on the top of the pump machine 300. The pump machine 300 is the main structure of the driving pump 10, which provides power for the movement of the driving pump 10, and the pump head 200 provides blood flow. The pump head 200 has an impeller and a rotor, and the rotor is arranged on the rotating shaft of the impeller, and the impeller can rotate in the pump head 200. When the driving pump 10 is working, the pump head 200 is installed on the pump machine 300. At this time, the magnetic levitation stator 100 can generate a rotating magnetic field, the rotor is located in the magnetic field, and the magnetic levitation stator 100 is magnetically coupled with the rotor to generate a rotating force. The rotating force can drive the impeller to rotate to achieve blood transportation.

[0041] Referring to FIGS. 2 to 5 , in one embodiment, the magnetic suspension stator 100 includes a stator coil 110 and a stator core 120. The stator coil 110 has a mounting groove 111, a first surface 112 and a second surface 113. The first surface 112 and the second surface 113 are located on the opposite surfaces of the stator coil 110. The first surface 112 is arranged in an arc shape and protrudes in a direction away from the mounting groove 111. The second surface 113 and the stator coil 110 have a first edge 1131 and a second edge 1132 at the connection in the circumferential direction. The second surface 113 does not protrude from the line connecting the first edge 1131 and the second edge 1132 at the second surface 113. The stator core 120 is arranged in the mounting groove 111, and its two ends are exposed from the mounting groove 111. FIG. 4 is a schematic diagram of the stator coil 110 in the magnetic suspension stator 100 shown in FIG. 2 viewed from an angle, and FIG. 5 is a schematic diagram of the stator core 120 in the magnetic suspension stator 100 shown in FIG. 2 viewed from an angle.

[0042] The stator coil 110 is the main structure of the magnetic suspension stator 100. The middle area of ​​the stator coil 110 has a mounting groove 111, and the mounting groove 111 is set through the middle area of ​​the stator coil 110. The mounting groove 111 is used to install the stator core 120. After the stator coil 110 is energized, the stator coil 110 and the stator core 120 cooperate to generate a rotating magnetic field, and the rotating magnetic field can be magnetically coupled with the rotor in the pump head 200 to drive the impeller to rotate. The stator coil 110 has a first end B and a second end C relative to each other in the axial direction. It is worth noting that the axial direction of the stator coil 110 refers to the central axis direction of the arc-shaped first surface 112, which is also the height direction of the stator coil 110 shown in Figures 2 and 3. Correspondingly, the circumferential direction is the width direction of the stator coil 110, which is also the circumferential direction of the arc-shaped first surface 112. The stator core 120 is installed in the installation slot 111 , with the first end B and the second end C exposed.

[0043] The stator coil 110 has a first surface 112 and a second surface 113 facing each other, and the first surface 112 and the second surface 113 are located on the outer surface of the stator coil 110, and the first surface 112 and the second surface 113 are facing each other, and the first surface 112 and the second surface 113 are in opposite directions, as shown in Figures 2 and 3. The structural dimensions of the stator coil 110 directly affect the size of the entire magnetic levitation stator 100. For this reason, the present application sets the first surface 112 as an outward convex structure, that is, the first surface 112 is set in an arc shape, and the first surface 112 protrudes in the direction away from the mounting groove 111.

[0044] In order to better illustrate the structural form of the second surface 113, the first edge 1131 and the second edge 1132 are introduced here, and the second surface 113 is connected to other parts of the stator coil in the circumferential direction, and the connection points are the first edge 1131 and the second edge 1132. The middle area of ​​the second surface 113 does not protrude from the line connecting the first edge 1131 and the second edge 1132. That is, the second surface 113 is a non-protruding structure, and the second surface 113 does not protrude from the line connecting the first edge 1131 and the second edge 1132 at the second surface 113.

[0045] That is to say, one side of the stator coil 110 is a protruding structure, and the other side is not protruding. It protrudes outward at the first surface 112, and does not protrude outward at the second surface 113, as shown in FIG. 4. In this way, the volume of the stator coil 110 can be reduced to reduce the overall size of the stator coil 110, thereby saving space. The inside and outside here are described with reference to the mounting groove 111 and the stator coil 110. The mounting groove 111 is the inner side of the stator coil 110, and the space outside the first surface 112 and the second surface 113 is the outer side of the stator coil 110.

[0046] The magnetic levitation stator 100 of the above embodiment is provided with a stator coil 110 having a protruding structure on one side and a non-protruding structure on the other side, so as to reduce the size of the stator coil 110 as much as possible, thereby achieving the purpose of reducing the overall size of the magnetic levitation stator 100. When the magnetic levitation stator 100 is installed in the pump machine 300 of the driving pump 10, the space in the pump machine 300 can be reduced, the volume of the pump machine 300 can be reduced, and the miniaturization design of the driving pump 10 is facilitated, and the driving pump 10 is convenient for application in the host.

[0047] Referring to FIG. 4 and FIG. 6 , in one embodiment, the stator coil 110 includes a first body 114, a second body 115, a first connecting body 116 and a second connecting body 117. The first connecting body 116 and the second connecting body 117 respectively connect the first body 114 and the second body 115 to form a stator coil 110 with a closed cross section. The first surface 112 is located on the surface of the first body 114 away from the second body 115, the second surface 113 is located on the surface of the second body 115 away from the first body 114, the connection between the first connecting body 116 and the second body 115 is the first edge 1131, the connection between the second connecting body 117 and the second body 115 is the second edge 1132, and the second surface 113 does not protrude from the line connecting the first edge 1131 and the second edge 1132. FIG. 6 is a schematic diagram of the stator coil 110 shown in FIG. 4 from another angle.

[0048] One edge of the first connection body 116 is connected to the first body 114, and the other edge is connected to the second body 115. One edge of the second connection body 117 is connected to the first body 114, and the other edge is connected to the second body 115. In this way, the first body 114, the second body 115, the first connection body 116, and the second connection body 117 are arranged to form a quadrilateral structure with the installation groove 111 in the middle. The first body 114, the first connection body 116, the second body 115, and the second connection body 117 are connected end to end in sequence to form a hollow stator coil 110, and the hollow part of the stator coil 110 is the installation groove 111. The first body 114 and the second body 115 are arranged opposite to each other, and the first connection body 116 and the second connection body 117 are arranged opposite to each other.

[0049] The first surface 112 is located outside the first body 114, that is, the first surface 112 is the outer surface of the first body 114. The first surface 112 has the same shape as the first body 114, that is, the first body 114 is also arranged in an arc shape, and the first body 114 protrudes in a direction away from the mounting groove 111, so that the first body 114 of the stator coil 110 is arranged in a protruding manner. The second surface 113 is located outside the second body 115, that is, the second surface 113 is the outer surface of the second body 115, and the first edge 1131 and the second edge 1132 are connected at the second surface 113, which is recorded as the reference line A, and the second surface 113 will not protrude from the reference line A. That is, the second body 115 of the stator coil 110 is not arranged in a protruding manner.

[0050] In this way, in the stator coil 110, the first body 114 is arc-shaped and protrudes, and the second body 115 is not protruding, so as to reduce the size of the stator coil 110 in the circumferential direction, thereby reducing the volume of the entire magnetic levitation stator 100, combined with the installation space, which is conducive to the miniaturized design of the driving pump 10.

[0051] Optionally, the first body 114, the second body 115, the first connecting body 116 and the second connecting body 117 are an integrated structure. The stator coil 110 is divided into four parts here for ease of description. In fact, the stator coil 110 is a structure formed by winding and is an integral whole. It is worth noting that the first surface 112 is the first body 114 after extending along the thickness direction, and the second surface 113 is the second body 115 after extending along the thickness direction. Optionally, the width dimensions of the first body 114 and the second body 115 are the same. In the following text, only the first surface 112 replaces the first body 114 and the second surface 113 replaces the second body 115 as an example for explanation.

[0052] Referring to FIG. 2 to FIG. 5 , in one embodiment, the central angle of the first surface 112 ranges from 30° to 180°. In this way, the stator coil 110 can have a certain length dimension along the length direction to meet the functional requirements. At the same time, when the central angle of the first surface 112 is within the above range, the contact area between the stator coil 110 and the stator core 120 can be increased to ensure the effect of generating a magnetic field.

[0053] Exemplarily, as shown in FIGS. 2 to 5 , the center angle of the first surface 112 is 45°. At this time, a plurality of magnetic suspension stators 100 are arranged on the top of the pump 300, and the plurality of magnetic suspension stators 100 are arranged around the central axis of the pump 300 to ensure the strength of the rotating magnetic field. Of course, in other embodiments of the present application, the center angle of the first surface 112 can also be 30°, 60° or other required angles.

[0054] 2 to 6, in one embodiment of the present application, the second surface 113 is arranged in an arc shape and protrudes toward the direction of the mounting groove 111. After the second surface 113 is arranged in an arc shape, the protruding portion of the second surface 113 faces the mounting groove 111, the recessed portion faces the outside of the mounting groove 111, and the second surface 113 extends in a direction away from the mounting groove 111, that is, the arc surfaces of the first surface 112 and the second surface 113 are in the same direction.

[0055] The stator coil 110 is designed with arc surfaces on both sides in the same direction. One side of the stator coil 110 is convex and the other side is concave. Compared with the stator coil 110 having a horseshoe shape or a structure with protrusions on both sides, the structural design with one side protruding and the other side concave can reduce the size of one of the protrusions, thereby reducing the overall size of the stator coil 110, and further reducing the size of the space occupied by the stator coil 110.

[0056] Referring to Figures 2 to 6, in one embodiment, the center angle of the second surface 113 is equal to the center angle of the first surface 112. That is, the first surface 112 and the second surface 113 have different radii but the same curvature, and the first surface 112 and the second surface 113 are arranged in parallel. In this way, the production and processing of the stator coil 110 can be facilitated. Of course, in other embodiments of the present application, the center angles of the first surface 112 and the second surface 113 may also be different. For example, the center angle of the second surface 113 is greater than the center angle of the first surface 112, or the center angle of the second surface 113 is smaller than the center angle of the second surface 113, as long as the second surface 113 is recessed inward to reduce the occupied space.

[0057] In another embodiment of the present application, the second surface 113 is a plane. That is, the second body 115 is arranged in a flat plate shape. In this case, the stator coil 110 is designed in a form in which one side is protruding and the other side is a plane. Compared with the stator coil 110 being a horseshoe-shaped structure or a structure in which both sides are protruding, the structure design in which one side is protruding and the other side is a plane can reduce the size of one of the protrusions, thereby reducing the overall size of the stator coil 110, and further reducing the size of the space occupied by the stator coil 110.

[0058] 5, 7 and 8, in one embodiment, the stator core includes a vertical portion 121 and a boot portion 122, the vertical portion 121 is disposed in the mounting groove 111, the boot portion 122 is disposed at both ends of the vertical portion 121 and is located outside the mounting groove 111, and the boot portion 122 is located in the direction of the first end B and the direction of the second end C of the stator coil 110. FIG7 is a schematic diagram of the stator core 120 shown in FIG5 from another angle, and FIG8 is a cross-sectional view of the magnetic suspension stator shown in FIG2.

[0059] There are two boots 122, which are respectively disposed at the two ends of the vertical portion 121 and are located in the direction of the first end B and the direction of the second end C of the stator coil 110. In addition, the boots 122 are bent relative to the vertical portion 121 and extend in the direction where the second surface 113 is located. When the stator core 120 is installed, the vertical portion 121 is located in the installation groove, one of the boots 122 is installed on the vertical portion 121 at the first end B, and the other boot 122 is installed on the vertical portion 121 at the second end C. At this time, the vertical portion 121 and the boots 122 are an integral whole, and can cooperate with the stator coil 110 to generate a rotating magnetic field.

[0060] After the vertical portion 121 and the boot portion are separately provided in the present application, the vertical portion 121 and the boot portion 122 can be easily matched with the stator coil 110 for easy installation. Optionally, the boot portion 122 can fit the first end B and the second end C of the stator coil 110, or it can not fit the first end B and the second end C of the stator coil 110, as long as the boot portion 122 is located in the direction of the first end B and the second end C of the stator coil 110.

[0061] Optionally, after the first end B of the boot 122 is mounted on the vertical portion 121, the boot 122 is located on the side of the first end B, and after the second end C of the boot 122 is mounted on the vertical portion 121, the boot 122 is located on the side of the second end C. In this way, the stator core 120 and the stator coil 110 can be reliably assembled, and the stator core 120 can be prevented from moving in the stator coil 110.

[0062] Optionally, the vertical portion 121 is an integral structure with one of the boots 122, and is separately provided with the other boot 122. During installation, the vertical portion 121 is installed in the installation slot, and then the other boot 122 is installed. Of course, in other embodiments of the present application, the vertical portion 121 is separately provided with the two boots 122. During installation, the vertical portion 121 is installed in the installation slot, and then the two boots 122 are installed at both ends of the vertical portion 121.

[0063] Optionally, the vertical portion 121 and the boot portion 122 are connected by threading, gluing, welding or riveting. Exemplarily, the vertical portion 121 has a first mounting hole, the boot portion 122 has a second mounting hole, the first mounting hole and the second mounting hole are coaxially arranged, and the threaded member passes through the first mounting hole and is installed in the second mounting hole to achieve the connection between the vertical portion 121 and the boot portion 122. Optionally, the threaded member is a screw or the like. Of course, in other embodiments of the present application, the vertical portion 121 and the boot portion 122 can also be connected by gluing, welding, anchoring, etc., as long as the connection is reliable.

[0064] 2, 3, 5 and 7, in one embodiment, the boot portion 122 has a third surface facing the second surface 113, and the third surface is coplanar with the second surface 113, or the third surface is coplanar with respect to the second surface 113. It is worth noting that the structures of the two boot portions 122 are substantially the same, and only the boot portion 122 at the first end B is taken as an example for description.

[0065] The third surface of the boot 122 is coplanar with the second surface 113, that is, the boot 122 does not protrude from the second surface 113, so as to save space, and at the same time ensure the area of ​​the stator core 120, thereby ensuring the magnetic field strength. Of course, in other embodiments of the present application, the third surface of the boot 122 can also be recessed in the second surface 113 to reduce the space occupied by the magnetic suspension stator 100.

[0066] 2 , 3 , 5 , 7 and 8 , in this embodiment, the vertical portion 121 and the boot portion 122 are arranged in a flat plate shape, and the vertical portion 121 is arranged in an L shape after being connected to one of the boot portions 122 , and the vertical portion 121 and the two boot portions 122 are arranged in a concave-shaped structure.

[0067] The magnetic levitation stator 100 of the present application sets the stator coil 110 to a structure with one side protruding and the other side not protruding. Compared with the stator coil being a horseshoe-shaped structure or a structure with two sides protruding, the structural design with one side protruding and the other side not protruding can reduce the size of one of the protrusions, so as to reduce the size of the stator coil 110 as much as possible, thereby achieving the purpose of reducing the overall size of the magnetic levitation stator 100. When the magnetic levitation stator 100 is installed in the pump machine 300 of the driving pump 10, it can reduce its space in the pump machine 300, reduce the volume of the pump machine 300, and facilitate the miniaturization design of the driving pump 10.

[0068] Meanwhile, when manufacturing the stator coil 110, the stator coil 110 with two convex surfaces is formed by winding on the mold, and the convex surface at the second surface 113 is shaped by a jig so that the second surface 113 is in a non-convex structure, so as to reduce the size of the stator coil 110, thereby reducing the space occupied by the stator coil 110. In addition, the stator core 120 is designed to be a separate vertical portion 121 and a boot portion 122, which can facilitate the assembly of the stator core 120.

[0069] Referring to FIG. 1 , the present application further provides a driving pump 10, comprising a pump head 200, a pump machine 300, and a magnetic suspension stator 100 as in any of the above embodiments, wherein the magnetic suspension stator 100 is disposed at the top of the pump machine 300, and the bottom of the pump head 200 has a rotor, the pump head 200 is detachably mounted on the top of the pump machine 300, and the magnetic suspension stator 100 provides a rotational force for the rotor to drive the impeller in the pump head 200 to rotate. After the driving pump 10 of the present application adopts the magnetic suspension stator 100 of the above embodiment, the volume of the driving pump 10 can be reduced, which is conducive to the miniaturization design of the driving pump 10.

[0070] In one embodiment, there are multiple magnetic suspension stators 100, and the multiple magnetic suspension stators 100 are arranged around the central axis of the pump 300, and there is a gap between two adjacent magnetic suspension stators 100. After the multiple magnetic suspension stators 100 are arranged at intervals along the circumferential direction in the pump 300, a rotating magnetic field can be generated in the circumferential direction to ensure the smooth rotation of the impeller.

[0071] The present application also provides an extracorporeal assisted circulation system, including a host, an oxygenator, and a driving pump 10 as described above with any of the technical features, wherein the outlet pipe of the driving pump 10 is connected to the oxygenator, and the host is respectively connected to the driving pump 10 and the oxygenator, and controls the driving pump 10 and the oxygenator to work. The medical pump is a power component of the extracorporeal assisted circulation system, which provides power for the flow of liquids such as blood. The medical pump is set in the host and connected to the oxygenator. When the host controls the operation of the medical pump, the medical pump can drive the blood entering it to flow, so that the blood enters the oxygenator from the medical pump for oxygenation, and the oxygenated blood returns to the body.

[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A magnetic suspension stator, characterized in that: include: A stator coil, the stator coil having a mounting groove, a first surface and a second surface, the first surface and the second surface being located on surfaces opposite to the stator coil, the first surface being arranged in an arc shape and protruding in a direction away from the mounting groove, the second surface and the stator coil having a first edge and a second edge at a circumferential connection thereof, and the second surface not protruding from a line connecting the first edge and the second edge at the second surface; as well as The stator core is arranged in the installation slot, and both ends of the stator core are exposed from the installation slot.

2. The magnetic suspension stator according to claim 1, characterized in that: The stator coil comprises a first main body, a second main body, a first connecting main body and a second connecting main body, wherein the first connecting main body and the second connecting main body respectively connect the first main body and the second main body to form the stator coil with a closed cross section; The first surface is located on the surface of the first body away from the second body, the second surface is located on the surface of the second body away from the first body, the connection between the first connecting body and the second body is the first edge, the connection between the second connecting body and the second body is the second edge, and the second surface does not protrude from the line between the first edge and the second edge.

3. The magnetic suspension stator according to claim 1, characterized in that: The central angle of the first surface ranges from 30° to 180°.

4. The magnetic suspension stator according to claim 1, characterized in that: The second surface is arranged in an arc shape and protrudes toward the mounting groove.

5. The magnetic suspension stator according to claim 4, characterized in that: The central angle of the second surface is less than or equal to the central angle of the first surface, or the central angle of the second surface is greater than the central angle of the first surface.

6. The magnetic suspension stator according to claim 1, characterized in that: The second surface is a plane.

7. The magnetic suspension stator according to any one of claims 1 to 6, characterized in that: The stator core comprises a vertical portion and a shoe portion, wherein the vertical portion is arranged in the mounting groove, and the shoe portion is arranged at two ends of the vertical portion and is located outside the mounting groove.

8. The magnetic suspension stator according to claim 7, characterized in that: The shoe portion has a third surface facing the second surface, the third surface is coplanar with the second surface, or the third surface is recessed relative to the second surface.

9. The magnetic suspension stator according to claim 7, characterized in that: The vertical portion and the boot portion are connected by threading, gluing, welding or riveting.

10. A driving pump, characterized in that: It comprises a pump head, a pump machine and a magnetic levitation stator as described in any one of claims 1 to 9, wherein the magnetic levitation stator is arranged at the top of the pump machine, the bottom of the pump head has a rotor, the pump head can be detachably installed on the top of the pump machine, and the magnetic levitation stator provides rotational force for the rotor to drive the impeller in the pump head to rotate.

11. The driving pump according to claim 10, characterized in that: There are multiple magnetic suspension stators, which are arranged around the central axis of the pump, and there is a distance between two adjacent magnetic suspension stators.

12. An extracorporeal circulatory system, characterized in that: The invention comprises a host, an oxygenator and a driving pump as claimed in claim 10 or 11, wherein the outlet pipe of the driving pump is connected to the oxygenator, the host is respectively connected to the driving pump and the oxygenator, and controls the driving pump and the oxygenator to work.

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