CN114870242A

Movatterモバイル変換

Info

Publication number: CN114870242A
Application number: CN202210169758.2A
Authority: CN
Inventors: 谢端卿; 余顺周
Original assignee: Shenzhen Core Medical Technology Co Ltd
Current assignee: Shenzhen Core Medical Technology Co Ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-08-09
Also published as: WO2023160424A1

Abstract

The application relates to a blood pump and a driving device thereof, wherein the driving device comprises a driving shell, a rotor, a stator component and a shaft sleeve component, and the driving shell is provided with a communicating port and a limiting part; the rotor can be rotatably arranged on the driving shell, part of the rotor is accommodated in the driving shell, and part of the rotor extends out of the driving shell and is fixedly connected with the impeller; the stator mechanism is accommodated in the driving shell and can generate a rotating magnetic field for driving the rotor to rotate; the axle sleeve subassembly is including installing in the first axle sleeve and the second axle sleeve of drive shell, the rotation axis setting of rotor is followed to first axle sleeve and second axle sleeve, one in first axle sleeve and the second axle sleeve and spacing portion butt, the second axle sleeve is including ring body and the extension that extends from the ring body, extension and first axle sleeve butt to make ring body and first axle sleeve interval, wherein, first axle sleeve and ring body can be worn to locate to the rotor can rotate, the intercommunication mouth can supply first axle sleeve and second axle sleeve to pass. The driving device is convenient to install and has high assembly precision.

Description

Translated fromChinese

血泵及其驱动装置Blood pump and its driving device

技术领域technical field

本申请涉及医疗器械技术领域，尤其涉及一种血泵及其驱动装置。The present application relates to the technical field of medical devices, and in particular, to a blood pump and a driving device thereof.

背景技术Background technique

血管内血泵，是一种被设计为经皮插入患者的血管中，被探入患者的心脏中作为左心室辅助设备或右心室辅助设备的装置，血管内血泵也可以被称为心内血泵。An intravascular blood pump is a device designed to be inserted percutaneously into a patient's blood vessel and probed into the patient's heart as a left ventricular assist device or a right ventricular assist device. An intravascular blood pump may also be referred to as an intracardiac blood pump.

目前的血管内血泵主要包括叶轮及驱动该叶轮旋转的电机，电机工作时产生旋转磁场，叶轮上设有与该旋转磁场相互作用的磁体，以使叶轮围绕其轴线旋转，将血液从血泵的血液流入口输送至血液流出口。然而，由于血管内血泵的体积较小，所以装配难度较大。The current intravascular blood pump mainly includes an impeller and a motor that drives the impeller to rotate. When the motor works, a rotating magnetic field is generated. The impeller is provided with a magnet that interacts with the rotating magnetic field, so that the impeller rotates around its axis, and the blood is pumped from the blood pump. The blood inflow port is transported to the blood outflow port. However, due to the small volume of the intravascular blood pump, assembly is difficult.

发明内容SUMMARY OF THE INVENTION

本申请提供了一种血泵及其驱动装置，可以使得血泵的装配过程更加简单、方便。The present application provides a blood pump and a driving device thereof, which can make the assembly process of the blood pump simpler and more convenient.

一种驱动装置，能够带动血泵的叶轮转动，包括：A driving device capable of driving an impeller of a blood pump to rotate, comprising:

驱动壳，设有连通口和限位部；The drive shell is provided with a communication port and a limit part;

转子，能够转动地安装于所述驱动壳，所述转子的部分收容于所述驱动壳，部分延伸至所述驱动壳外、并与所述叶轮固接；a rotor, which is rotatably mounted on the drive casing, a part of the rotor is accommodated in the drive casing, a part of the rotor extends outside the drive casing, and is fixedly connected to the impeller;

定子机构，收容于所述驱动壳内，所述定子机构能够产生驱动所述转子旋转的旋转磁场；及a stator mechanism, housed in the drive housing, the stator mechanism capable of generating a rotating magnetic field that drives the rotor to rotate; and

轴套组件，包括安装于所述驱动壳的第一轴套和第二轴套，所述第一轴套和所述第二轴套沿所述转子的旋转轴线设置，所述第一轴套和所述第二轴套中的一个与所述限位部抵接，所述第二轴套包括环本体及从所述环本体上延伸出的延伸部，所述延伸部与所述第一轴套抵接，以使所述环本体与所述第一轴套间隔，其中，所述转子能够转动地穿设于所述第一轴套和所述环本体，所述连通口能够供所述第一轴套和所述第二轴套穿过。A bushing assembly, comprising a first bushing and a second bushing mounted on the drive housing, the first bushing and the second bushing are arranged along the rotation axis of the rotor, the first bushing and one of the second bushings is in contact with the limiting portion, the second bushing includes a ring body and an extension portion extending from the ring body, and the extension portion is connected to the first The shaft sleeve is abutted, so that the ring body is spaced from the first shaft sleeve, wherein the rotor is rotatably penetrated through the first shaft sleeve and the ring body, and the communication port can be used for all The first bushing and the second bushing pass through.

在其中一个实施例中，所述转子包括：In one embodiment, the rotor includes:

转轴，所述转轴包括轴本体和环设于所述轴本体的限位环，所述轴本体能够转动地穿设于所述第一轴套和所述环本体，所述轴本体的一端收容于所述驱动壳，另一端从所述连通口延伸至所述驱动壳外、并与所述叶轮固接，所述限位环位于所述环本体和所述第一轴套之间，且所述限位环位于所述轴本体和所述延伸部之间，所述限位环的外径分别大于所述环本体的内径和所述第一轴套的内径，以在所述轴本体的延伸方向上对所述转轴限位；A rotating shaft, the rotating shaft includes a shaft body and a limit ring arranged around the shaft body, the shaft body is rotatably penetrated through the first shaft sleeve and the ring body, and one end of the shaft body accommodates In the drive housing, the other end extends from the communication port to the outside of the drive housing and is fixedly connected with the impeller, the limiting ring is located between the ring body and the first bushing, and The limiting ring is located between the shaft body and the extension part, and the outer diameter of the limiting ring is respectively larger than the inner diameter of the ring body and the inner diameter of the first bushing, so as to prevent the shaft body Limiting the rotating shaft in the extension direction of ;

磁组件，所述磁组件固接于所述轴本体，其中，所述定子机构能够产生驱动所述磁组件旋转的旋转磁场，所述磁组件能够带动所述转轴旋转。A magnetic assembly, the magnetic assembly is fixed on the shaft body, wherein the stator mechanism can generate a rotating magnetic field that drives the magnetic assembly to rotate, and the magnetic assembly can drive the rotating shaft to rotate.

在其中一个实施例中，所述延伸部为环形，所述延伸部与所述环本体共轴，所述延伸部的内径大于所述限位环的外径，所述延伸部和所述限位环之间形成供流体流通的间隙。In one embodiment, the extension portion is annular, the extension portion is coaxial with the ring body, the inner diameter of the extension portion is larger than the outer diameter of the limiting ring, the extension portion and the limiting ring are A gap for fluid flow is formed between the bit rings.

在其中一个实施例中，所述第一轴套具有第一轴孔，所述第一轴套的朝向所述限位环的一侧上还开设有第一导流槽，所述第一导流槽与所述第一轴孔连通，所述轴本体能够转动地穿设于所述第一轴孔，所述轴本体与所述第一轴孔之间具有供流体流通的间隙；In one embodiment, the first shaft sleeve has a first shaft hole, a first guide groove is further opened on the side of the first shaft sleeve facing the limit ring, and the first guide groove is The flow groove is communicated with the first shaft hole, the shaft body is rotatably penetrated through the first shaft hole, and there is a gap for fluid circulation between the shaft body and the first shaft hole;

及/或，所述环本体具有第二轴孔，所述环本体的朝向所述限位环的一侧上还开设有第二导流槽，所述第二导流槽与所述第二轴孔连通，所述轴本体能够转动地穿设于所述第二轴孔，所述轴本体与所述第二轴孔之间具有供流体流通的间隙。And/or, the ring body has a second shaft hole, and the side of the ring body facing the limit ring is also provided with a second guide groove, and the second guide groove is connected to the second guide groove. The shaft holes are communicated with each other, the shaft body is rotatably penetrated through the second shaft hole, and there is a gap for fluid circulation between the shaft body and the second shaft hole.

在其中一个实施例中，所述限位环具有外环面及与所述外环面连接的两端面，所述外环面和所述两端面的连接处均设有倒角。In one of the embodiments, the limiting ring has an outer annular surface and two end surfaces connected to the outer annular surface, and the connection between the outer annular surface and the two end surfaces is provided with a chamfer.

在其中一个实施例中，所述第一轴套上开设有定位槽，所述延伸部的远离所述环本体的一端收容于所述定位槽中，以对所述第二轴套定位。In one embodiment, a positioning groove is formed on the first bushing, and one end of the extension portion away from the ring body is received in the positioning groove to position the second bushing.

在其中一个实施例中，所述第一轴套包括盘部及形成在所述盘部的一表面的圆台部，所述第一轴套具有第一轴孔，所述第一轴孔从所述盘部的远离所述圆台部的表面延伸至所述圆台部的远离所述盘部的一端的端面；所述延伸部为环形，所述延伸部与所述环本体共轴，所述延伸部套设于所述圆台部上，所述延伸部的远离所述环本体的一端的端面与所述盘部抵接，其中，所述转子能够转动地穿设于所述第一轴孔。In one embodiment, the first bushing includes a disc portion and a circular frustum portion formed on a surface of the disc portion, the first bushing has a first shaft hole, and the first shaft hole extends from the The surface of the disc portion away from the circular truncated portion extends to the end face of the end of the circular truncated portion away from the disc portion; the extension portion is annular, the extension portion is coaxial with the ring body, and the extension The end surface of the extension part away from the ring body is in contact with the disk part, wherein the rotor is rotatably penetrated through the first shaft hole.

在其中一个实施例中，所述第一轴套的靠近所述环本体的一侧的孔径大于所述第一轴套的背离所述环本体的一侧的孔径；及/或，所述环本体的靠近所述第二轴套的一侧的孔径大于所述环本体的背离所述环本体的一侧的孔径。In one embodiment, the hole diameter of the side of the first bushing close to the ring body is larger than the hole diameter of the side of the first bushing facing away from the ring body; and/or the ring The hole diameter of the side of the body close to the second bushing is larger than the hole diameter of the side of the ring body facing away from the ring body.

在其中一个实施例中，所述第二轴套具有第二轴孔，所述第二轴孔具有直孔部及与所述直孔部连通的锥形孔部，所述锥形孔部的孔径较小的一端与所述直孔部连通，孔径较大的一端朝向所述第一轴套，所述转子能够转动地穿设于所述直孔部和所述锥形孔部。In one embodiment, the second shaft sleeve has a second shaft hole, the second shaft hole has a straight hole portion and a tapered hole portion communicating with the straight hole portion, and the tapered hole portion has a An end with a smaller aperture is communicated with the straight hole portion, an end with a larger aperture faces the first bushing, and the rotor is rotatably penetrated through the straight hole portion and the tapered hole portion.

在其中一个实施例中，所述直孔部在所述转子的旋转轴线方向上的长度大于或等于0.5毫米。In one of the embodiments, the length of the straight hole portion in the direction of the rotation axis of the rotor is greater than or equal to 0.5 mm.

在其中一个实施例中，所述驱动壳包括壳本体及与所述壳本体对接的安装壳，所述第一轴套和所述第二轴套均安装于所述安装壳，所述定子机构收容于所述壳本体，所述连通口和所述限位部均设置于所述安装壳。In one embodiment, the drive casing includes a casing body and a mounting casing that is butted with the casing body, the first bushing and the second bushing are both mounted on the mounting casing, and the stator mechanism It is accommodated in the housing body, and both the communication port and the limiting portion are arranged on the mounting housing.

在其中一个实施例中，所述转子包括转轴和磁组件，所述转轴的一端收容于所述驱动壳，另一端延伸至所述驱动壳外、并与所述叶轮固接，所述转轴相对所述驱动壳能够转动，所述磁组件包括第一磁体和第二磁体，所述第一磁体和所述第二磁体均固接于所述转轴；In one embodiment, the rotor includes a rotating shaft and a magnetic assembly, one end of the rotating shaft is accommodated in the driving casing, and the other end extends outside the driving casing and is fixedly connected to the impeller, and the rotating shaft is opposite to The drive housing can rotate, the magnet assembly includes a first magnet and a second magnet, and the first magnet and the second magnet are both fixed to the rotating shaft;

所述定子机构包括驱动定子和动力定子，所述驱动定子和所述动力定子沿所述转轴的旋转轴线布置，所述驱动定子能够产生驱动所述第一磁体旋转的旋转磁场，所述动力定子能够产生驱动所述第二磁体旋转的旋转磁场；其中，所述第一磁体位于所述驱动定子和所述动力定子之间，其中，所述转轴穿设于所述动力定子，所述驱动定子在所述转轴的延伸方向上与所述转轴间隔。The stator mechanism includes a driving stator and a power stator, which are arranged along a rotation axis of the rotating shaft, the driving stator capable of generating a rotating magnetic field that drives the rotation of the first magnet, and the power stator. A rotating magnetic field can be generated to drive the second magnet to rotate; wherein, the first magnet is located between the driving stator and the power stator, wherein the rotating shaft passes through the power stator, and the driving stator It is spaced from the rotating shaft in the extending direction of the rotating shaft.

在其中一个实施例中，所述驱动定子包括多个第一磁芯及分别缠绕多个所述第一磁芯设置的多个第一线圈，多个所述第一磁芯环绕所述转轴的旋转轴线所在的直线设置一周；所述动力定子包括多个第二磁芯及分别缠绕多个所述第二磁芯设置的多个第二线圈，多个所述第二磁芯环绕所述转轴设置一周，其中，所述第一磁芯和所述第二磁芯均包括磁柱，所述第一磁芯的所述磁柱的横截面积大于所述第二磁芯的所述磁柱的横截面积。In one embodiment, the driving stator includes a plurality of first magnetic cores and a plurality of first coils respectively wound around the plurality of first magnetic cores, and the plurality of first magnetic cores surround the rotating shaft. The straight line where the rotation axis is located is arranged for a circle; the power stator includes a plurality of second magnetic cores and a plurality of second coils respectively wound around the plurality of second magnetic cores, and a plurality of the second magnetic cores surround the rotating shaft The first magnetic core and the second magnetic core both include magnetic pillars, and the cross-sectional area of the magnetic pillars of the first magnetic core is larger than the magnetic pillars of the second magnetic core. cross-sectional area.

在其中一个实施例中，所述转轴具有第一配合段和第二配合段，所述第一配合段的横截面积大于所述第二配合段的横截面积，所述第一配合段能够转动地穿设于所述轴套组件，所述第二配合段能够转动地穿设于所述动力定子。In one embodiment, the rotating shaft has a first fitting section and a second fitting section, the cross-sectional area of the first fitting section is larger than the cross-sectional area of the second fitting section, and the first fitting section can The second matching segment is rotatably penetrated through the power stator.

一种血泵，包括：A blood pump that includes:

上述驱动装置；the above-mentioned driving device;

叶轮，设置于所述驱动壳外，所述叶轮与所述转子固接，并且能够随所述转子旋转。The impeller is arranged outside the drive casing, the impeller is fixedly connected with the rotor, and can rotate with the rotor.

上述血泵的驱动装置用于支撑转子的第一轴套和第二轴套沿转子的旋转轴线设置，且第一轴套和第二轴套中的一个与驱动壳的限位件抵接，以支撑第一轴套和第二轴套中的一个，第二轴套的支撑转子的环本体通过第二轴承的延伸部与第一轴套抵接，以支撑分隔环本体和第一轴套，以更好地支撑转子，且延伸部和环本体为一体件，能够减少零件的装配，有利于简化驱动装置的装配；进一步将连通口设置为能够供第一轴套和第二轴套穿过，以使第一轴套和第二轴套能够从连通口装入驱动壳的安装壳中，以使驱动装置的装配更加方便；且上述结构设计使得驱动装置不仅装配简单方便，而且能够提高驱动装置的装配精度，提高生产效率。The driving device of the above-mentioned blood pump is used to support the first bushing and the second bushing of the rotor, which are arranged along the rotation axis of the rotor, and one of the first bushing and the second bushing is in contact with the limiting member of the driving shell, to support one of the first bushing and the second bushing, the ring body of the second bushing supporting the rotor abuts the first bushing through the extension of the second bearing to support the dividing ring body and the first bushing , in order to better support the rotor, and the extension part and the ring body are integrated, which can reduce the assembly of parts, which is beneficial to simplify the assembly of the driving device; further, the communication port is set to be able to be worn by the first bushing and the second bushing However, the first bushing and the second bushing can be installed into the installation shell of the drive housing from the communication port, so as to make the assembly of the drive device more convenient; and the above structural design makes the drive device not only simple and convenient to assemble, but also can improve the The assembly accuracy of the drive device improves production efficiency.

附图说明Description of drawings

为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present application. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

图1是一实施方式的血泵的结构示意图；1 is a schematic structural diagram of a blood pump according to an embodiment;

图2是图1所示血泵的省略了部分套管组件和猪尾管的结构示意图；FIG. 2 is a schematic structural diagram of the blood pump shown in FIG. 1 omitting part of the cannula assembly and pigtail tube;

图3是图2所示的血泵沿A-A的剖视图；3 is a cross-sectional view of the blood pump shown in FIG. 2 along A-A;

图4是图1所示的血泵的驱动装置的结构示意图；Fig. 4 is the structural representation of the drive device of the blood pump shown in Fig. 1;

图5是图4所示的驱动装置的另一角度的结构示意图；FIG. 5 is a schematic structural diagram of the driving device shown in FIG. 4 from another angle;

图6是图5所示的驱动装置沿B-B线的剖视图；FIG. 6 is a cross-sectional view of the driving device shown in FIG. 5 along line B-B;

图7是图4所示的驱动装置的另一角度的结构示意图；FIG. 7 is a schematic structural diagram of the driving device shown in FIG. 4 from another angle;

图8是图7所示的驱动装置沿C-C线的剖视图；FIG. 8 is a cross-sectional view of the driving device shown in FIG. 7 along line C-C;

图9是图4所示的驱动装置的分解图；Figure 9 is an exploded view of the drive device shown in Figure 4;

图10是图6所示的驱动装置的转轴、轴套组件和驱动壳的安装壳的剖视图；FIG. 10 is a cross-sectional view of the rotating shaft, the shaft sleeve assembly and the mounting shell of the drive housing of the drive device shown in FIG. 6;

图11是图9所示的驱动装置的轴套组件的第一轴套的另一角度的结构示意图；Figure 11 is a schematic structural diagram of another angle of the first bushing of the bushing assembly of the drive device shown in Figure 9;

图12是图9所示的驱动装置的轴套组件的第二轴套的另一角度的结构示意图；Figure 12 is a schematic structural diagram of another angle of the second bushing of the bushing assembly of the drive device shown in Figure 9;

图13是图10所示的驱动装置的轴套组件的剖视图；Figure 13 is a cross-sectional view of a bushing assembly of the drive device shown in Figure 10;

图14是图9所示的驱动装置的转轴的剖视图；FIG. 14 is a cross-sectional view of the rotating shaft of the drive device shown in FIG. 9;

图15是图8所示的驱动装置的转轴、轴套组件和驱动壳的安装壳的剖视图；FIG. 15 is a cross-sectional view of the rotating shaft, the bushing assembly and the mounting shell of the drive housing of the drive device shown in FIG. 8;

图16是图9所示的驱动装置的转子的磁组件的另一角度的结构示意图；FIG. 16 is a schematic structural diagram of another angle of the magnetic assembly of the rotor of the driving device shown in FIG. 9;

图17是图16所示的磁组件沿D-D线的剖视图；FIG. 17 is a cross-sectional view of the magnetic assembly shown in FIG. 16 along line D-D;

图18是图16所示的磁组件的分解图；Figure 18 is an exploded view of the magnet assembly shown in Figure 16;

图19为图9所示的驱动装置的驱动定子的另一角度的结构示意图。FIG. 19 is a schematic structural diagram of another angle of the driving stator of the driving device shown in FIG. 9 .

具体实施方式Detailed ways

为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图即实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings, namely the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者间接在该另一个元件上。当一个元件被称为是“连接于”另一个元件，它可以是直接连接到另一个元件或间接连接至该另一个元件上。It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of this application, "plurality" means two or more, unless otherwise expressly and specifically defined.

为了说明本申请的技术方案，下面结合具体附图及实施例来进行说明。In order to illustrate the technical solutions of the present application, the following description is made with reference to the specific drawings and embodiments.

请参考图1～图3，本申请第一实施方式提供了一种血泵100，包括驱动装置10、套管组件20和叶轮30。套管组件20与驱动装置10连接；叶轮30能够转动地收容于套管组件20中；叶轮30与驱动装置10连接，驱动装置10能够带动叶轮30转动，以实现血泵100的泵血功能。Referring to FIGS. 1 to 3 , the first embodiment of the present application provides ablood pump 100 , which includes a drivingdevice 10 , acannula assembly 20 and animpeller 30 . Thesleeve assembly 20 is connected with thedrive device 10; theimpeller 30 is rotatably accommodated in thesleeve assembly 20; theimpeller 30 is connected with thedrive device 10, and thedrive device 10 can drive theimpeller 30 to rotate to realize the blood pumping function of theblood pump 100.

具体地，套管组件20具有流入口21和流出口22。在其中一个实施例中，套管组件20延伸穿过心脏瓣膜，诸如主动脉瓣膜，而流入口21位于心脏内，流出口22和驱动装置10位于心脏外的诸如主动脉的血管中。当叶轮30旋转时，血液从流入口21流入套管组件20中，再从流出口22流出套管组件20。Specifically, thesleeve assembly 20 has aninflow port 21 and anoutflow port 22 . In one embodiment, thecannula assembly 20 extends through a heart valve, such as the aortic valve, with theinflow port 21 located within the heart and theoutflow port 22 and drivedevice 10 in a blood vessel outside the heart, such as the aorta. When theimpeller 30 rotates, the blood flows into thecannula assembly 20 from theinflow port 21 , and then flows out of thecannula assembly 20 from theoutflow port 22 .

更具体地，套管组件20的一端与驱动装置10连接，另一端可设置猪尾管 23，猪尾管23用于稳定血泵100在心脏中的位置，为心脏组织提供无创伤支持。More specifically, one end of thecannula assembly 20 is connected to the drivingdevice 10, and the other end can be provided with apigtail tube 23, which is used to stabilize the position of theblood pump 100 in the heart and provide non-invasive support for the heart tissue.

具体地，猪尾管23为中空结构。猪尾管23的材料选自聚氨酯、尼龙、聚乙烯、聚醚嵌段聚酰胺PEBAX及乳胶材料中的至少一种。Specifically, thepigtail tube 23 has a hollow structure. The material of thepigtail tube 23 is selected from at least one of polyurethane, nylon, polyethylene, polyether block polyamide PEBAX and latex materials.

进一步地，血泵100还包括导管组件40，导管组件40与驱动装置10连接，导管组件40内设置有供应管线，供应管线包括用于给驱动装置10通入清洗流体的清洗管线411。具体在图示的实施例中，驱动装置10位于套管组件20和导管组件40之间。Further, theblood pump 100 further includes acatheter assembly 40, thecatheter assembly 40 is connected with the drivingdevice 10, a supply pipeline is provided in thecatheter assembly 40, and the supply pipeline includes acleaning pipeline 411 for passing the cleaning fluid to the drivingdevice 10. Specifically in the illustrated embodiment, thedrive device 10 is located between thecannula assembly 20 and thecatheter assembly 40.

具体地，清洗流体可以为生理盐水、含有肝素生理盐水或葡萄糖等。Specifically, the cleaning fluid may be physiological saline, physiological saline containing heparin, glucose, or the like.

请一并参阅图3～图9，驱动装置10与叶轮30传动连接，驱动装置10能够带动血泵100的叶轮30转动。在图示的实施例中，驱动装置10包括驱动壳 11、转子12、定子机构13、固定件14和轴套组件15。Please refer to FIG. 3 to FIG. 9 together, the drivingdevice 10 is connected with theimpeller 30 in a driving manner, and the drivingdevice 10 can drive theimpeller 30 of theblood pump 100 to rotate. In the illustrated embodiment, thedrive device 10 includes adrive housing 11 , arotor 12 , astator mechanism 13 , a fixingmember 14 and abushing assembly 15 .

驱动壳11具有连通口11a。连通口11a位于驱动壳11的靠近套管组件20 的一侧。具体地，连通口11a连通驱动壳11和套管组件20。叶轮30设置在驱动壳11外。其中，清洗管线411中通入的清洗流体能够流经驱动壳11的内部，从连通口11a流入套管组件20中，以阻止血液从驱动壳11的连通口11a渗透到驱动壳11中。Thedrive case 11 has acommunication port 11a. Thecommunication port 11a is located on the side of thedrive housing 11 close to thesleeve assembly 20 . Specifically, thecommunication port 11a communicates thedrive housing 11 and thesleeve assembly 20 . Theimpeller 30 is provided outside thedrive housing 11. The cleaning fluid introduced into thecleaning line 411 can flow through the inside of thedrive housing 11 and into thecannula assembly 20 from thecommunication port 11a to prevent blood from penetrating into thedrive housing 11 from thecommunication port 11a of thedrive housing 11.

请一并参阅图10，驱动壳11内还设有限位部11b。本实施例中，驱动壳 11包括壳本体111及与壳本体111对接的安装壳112，连通口11a和限位部11b 均设置于安装壳112。具体地，壳本体111和安装壳112均大致为筒形。限位部11b为设置于安装壳112的内壁上的环形凸起。安装壳112的一开口端与壳本体111的一开口端对接，连通口11a为安装壳112的远离壳本体111的一端的开口。其中，限位部11b位于安装壳112的远离连通口11a的一端，也即安装壳112的靠近壳本体111的一端。Please also refer to FIG. 10 , a limitingportion 11 b is also provided in the drivingcasing 11 . In this embodiment, thedrive casing 11 includes acasing body 111 and aninstallation casing 112 that is butted with thecasing body 111 . Specifically, both thecase body 111 and the mountingcase 112 are substantially cylindrical. The limitingportion 11b is an annular protrusion disposed on the inner wall of the mountingshell 112. An open end of the mountingshell 112 is abutted with an open end of theshell body 111, and thecommunication port 11a is an opening of the end of the mountingshell 112 away from theshell body 111. The limitingportion 11b is located at one end of the mountingshell 112 away from thecommunication port 11a, that is, the end of the mountingshell 112 that is close to theshell body 111.

转子12能够转动地安装于驱动壳11，转子12部分收容于驱动壳11，部分延伸至驱动壳11外、并与叶轮30固接，转子12能够带动叶轮30转动。Therotor 12 is rotatably mounted on thedrive housing 11, therotor 12 is partially accommodated in thedrive housing 11, and partially extends to the outside of thedrive housing 11 and is fixedly connected with theimpeller 30, and therotor 12 can drive theimpeller 30 to rotate.

请结合图3、图6、图8和图9，具体地，转子12包括转轴121和磁组件 122，转轴121的一端收容于驱动壳11，另一端从连通口11a延伸至驱动壳11 外、并与叶轮30固接，转轴121能够相对驱动壳11转动，磁组件122与转轴 121固接。具体地，转轴121穿设于安装壳112，一端收容于壳本体111，另一端从连通口11a延伸至驱动壳11外而与叶轮30固接。磁组件122位于驱动壳 11的壳本体111中。3, 6, 8 and 9, specifically, therotor 12 includes arotating shaft 121 and amagnetic assembly 122. One end of therotating shaft 121 is accommodated in thedrive casing 11, and the other end extends from thecommunication port 11a to the outside of thedrive casing 11, It is fixedly connected with theimpeller 30 , therotating shaft 121 can rotate relative to the drivingcasing 11 , and themagnetic assembly 122 is fixedly connected with therotating shaft 121 . Specifically, therotating shaft 121 passes through theinstallation casing 112, one end is accommodated in thecasing body 111, and the other end extends from thecommunication port 11a to the outside of thedrive casing 11 to be fixedly connected with theimpeller 30. Themagnet assembly 122 is located in thehousing body 111 of thedrive housing 11.

具体地，转轴121为陶瓷或不锈钢等材料制造，例如氧化铝增韧氧化锆 (ATZ)或SUS316L等制造，以避免转轴121断裂。Specifically, therotating shaft 121 is made of materials such as ceramics or stainless steel, such as alumina toughened zirconia (ATZ) or SUS316L, so as to prevent therotating shaft 121 from breaking.

定子机构13收容于驱动壳11，定子机构13能够产生驱动转子12旋转的旋转磁场。具体地，定子机构13能够产生驱动磁组件122旋转的旋转磁场，以使磁组件122能够带动转轴121绕转轴121的轴线旋转。具体地，定子机构13 收容于驱动壳11的壳本体111中。Thestator mechanism 13 is accommodated in thedrive case 11, and thestator mechanism 13 can generate a rotating magnetic field that drives therotor 12 to rotate. Specifically, thestator mechanism 13 can generate a rotating magnetic field that drives themagnetic assembly 122 to rotate, so that themagnetic assembly 122 can drive therotating shaft 121 to rotate around the axis of therotating shaft 121 . Specifically, thestator mechanism 13 is accommodated in thecasing body 111 of thedrive casing 11 .

在其中一个实施例中，磁组件122包括第一磁体1222，第一磁体1222与转轴121固接。定子机构13包括驱动定子131，驱动定子131与转轴121沿转轴121的轴线间隔设置，即转轴121不穿设至驱动定子131内。驱动定子131 能够产生与第一磁体1222相互作用的旋转磁场，以使第一磁体1222能够带动转轴121绕转轴121的轴线旋转，从而带动叶轮30旋转。其中，驱动定子131 与转轴121沿转轴121的轴线间隔设置，即转轴121不穿设至驱动定子131内，可使得驱动定子131沿垂直于转轴121轴向的横截面更大，驱动定子131产生的旋转磁场的磁通量更大，对第一磁体1222的扭矩也更大，从而减少了驱动定子131在带动转轴121旋转时所需的电流，可以确保血泵100功耗更低，发热量更少。In one embodiment, themagnet assembly 122 includes afirst magnet 1222, and thefirst magnet 1222 is fixedly connected to therotating shaft 121. Thestator mechanism 13 includes a drivingstator 131, and the drivingstator 131 and therotating shaft 121 are arranged at intervals along the axis of therotating shaft 121, that is, therotating shaft 121 does not penetrate into the drivingstator 131. The drivingstator 131 can generate a rotating magnetic field interacting with thefirst magnet 1222, so that thefirst magnet 1222 can drive therotation shaft 121 to rotate around the axis of therotation shaft 121, thereby driving theimpeller 30 to rotate. The drivingstator 131 and therotating shaft 121 are arranged at intervals along the axis of therotating shaft 121, that is, therotating shaft 121 does not penetrate into the drivingstator 131, so that the cross section of the drivingstator 131 along the axis perpendicular to the axis of therotating shaft 121 is larger, and the drivingstator 131 generates The magnetic flux of the rotating magnetic field is larger, and the torque to thefirst magnet 1222 is also larger, thereby reducing the current required to drive thestator 131 to drive therotating shaft 121 to rotate, which can ensure that theblood pump 100 consumes less power and generates less heat. .

具体地，驱动定子131包括第一背板1311、多个第一磁芯1312及多个分别环绕第一磁芯1312设置的第一线圈1313。第一背板1311固接于驱动壳11 内。多个第一磁芯1312环绕转轴121的轴线间隔设置一周。具体地，每个第一磁芯1312的延伸方向均与转轴121的延伸方向平行。每个第一磁芯1312的一端与第一背板1311固接，另一端延伸至靠近第一磁体1222。第一线圈1313能够产生与第一磁体1222相互作用的旋转磁场，从而引起第一磁体1222旋转，以带动转轴121旋转，叶轮30随转轴121旋转。Specifically, the drivingstator 131 includes afirst backplane 1311 , a plurality of firstmagnetic cores 1312 , and a plurality offirst coils 1313 respectively disposed around the firstmagnetic cores 1312 . Thefirst backplane 1311 is fixed in thedrive housing 11 . The plurality of firstmagnetic cores 1312 are arranged around the axis of therotating shaft 121 at intervals. Specifically, the extending direction of each of the firstmagnetic cores 1312 is parallel to the extending direction of therotating shaft 121. One end of each firstmagnetic core 1312 is fixed to thefirst back plate 1311 , and the other end extends to be close to thefirst magnet 1222 . Thefirst coil 1313 can generate a rotating magnetic field that interacts with thefirst magnet 1222, thereby causing thefirst magnet 1222 to rotate, so as to drive therotating shaft 121 to rotate, and theimpeller 30 rotates with therotating shaft 121.

需要说明的是，在一些实施例中，驱动定子131也可以不具有第一背板1311。第一背板1311起到闭合磁路的作用，以促进和增加驱动定子131磁通量的产生，提高耦合能力。由于第一背板1311能够增加磁通量，因此，设置第一背板1311有利于减小血泵100的整体直径。第一背板1311与第一磁芯1312 的材料相同，在一些实施例中，第一背板1311与第一磁芯1312均由软磁性材料制成，如钴钢等。It should be noted that, in some embodiments, the drivingstator 131 may also not have thefirst back plate 1311 . Thefirst back plate 1311 functions to close the magnetic circuit, so as to promote and increase the generation of the magnetic flux of the drivingstator 131, and to improve the coupling ability. Since thefirst back plate 1311 can increase the magnetic flux, the provision of thefirst back plate 1311 is beneficial to reduce the overall diameter of theblood pump 100. Thefirst backplane 1311 and the firstmagnetic core 1312 are made of the same material. In some embodiments, thefirst backplane 1311 and the firstmagnetic core 1312 are both made of soft magnetic materials, such as cobalt steel.

固定件14固定于驱动壳11内，固定件14上设置有定位柱141；第一背板 1311上开设置有定位孔1311a，定位柱141穿设于定位孔1311a，从而以便于驱动定子131的定位安装。其中，定位柱141的轴线与转轴121的轴线重合。The fixingmember 14 is fixed in the drivingshell 11, and the fixingmember 14 is provided with apositioning column 141; thefirst back plate 1311 is provided with apositioning hole 1311a, and thepositioning column 141 is inserted through thepositioning hole 1311a, so as to facilitate the driving of thestator 131. Positioning installation. The axis of thepositioning column 141 coincides with the axis of therotating shaft 121 .

具体地，固定件14上开设有贯通孔142，贯通孔142与驱动壳11的内腔连通，贯通孔142用于收容清洗管线411的一端。Specifically, the fixingmember 14 is provided with a throughhole 142, the throughhole 142 communicates with the inner cavity of thedrive housing 11, and the throughhole 142 is used to accommodate one end of thecleaning pipeline 411.

进一步地，固定件14上还开设有支撑孔143，导管组件40内还设置有支撑件(图未示)，支撑件用于在输送血泵100时支撑导管组件40和/或血泵100 的作用，支撑件的一端能够收容于支撑孔143中。具体地，支撑件例如为镍钛丝。Further, asupport hole 143 is also opened on the fixingmember 14, and a support member (not shown) is also provided in thecatheter assembly 40, and the support member is used to support thecatheter assembly 40 and/or theblood pump 100 when theblood pump 100 is delivered. Therefore, one end of the support member can be accommodated in thesupport hole 143 . Specifically, the support is, for example, a nickel-titanium wire.

请再次结合图10，轴套组件15包括安装于驱动壳11的第一轴套152和第二轴套154，第一轴套152和第二轴套154沿转子12的旋转轴线设置，第一轴套152和第二轴套154中的一个与限位部11b抵接，转子12能够转动地穿设于第一轴套152和第二轴套154。其中，连通口11a能够供第一轴套152和第二轴套154穿过。将连通口11a设置为能够供第一轴套152和第二轴套154穿过，以使第一轴套152和第二轴套154能够从连通口11a装入驱动壳11的安装壳 112中，能够方便驱动装置10的装配和提高装配精度，提高生产效率。具体在图示的实施例中，第一轴套152和第二轴套154均安装于安装壳112中；第二轴套154较第一轴套152更靠近连通口11a；第一轴套152与限位部11b抵接；转轴121能够转动地穿设于第一轴套152和第二轴套154。Referring to FIG. 10 again, thebushing assembly 15 includes afirst bushing 152 and asecond bushing 154 mounted on thedrive housing 11 . Thefirst bushing 152 and thesecond bushing 154 are arranged along the rotation axis of therotor 12 . Thefirst bushing 152 and thesecond bushing 154 One of theshaft sleeve 152 and thesecond shaft sleeve 154 is in contact with the limitingportion 11 b , and therotor 12 is rotatably inserted through thefirst shaft sleeve 152 and thesecond shaft sleeve 154 . Thecommunication port 11a can allow thefirst bushing 152 and thesecond bushing 154 to pass therethrough. Thecommunication port 11a is provided so that thefirst sleeve 152 and thesecond sleeve 154 can pass through, so that thefirst sleeve 152 and thesecond sleeve 154 can be inserted into theinstallation shell 112 of thedrive housing 11 from thecommunication port 11a , which can facilitate the assembly of the drivingdevice 10 and improve the assembly precision, thereby improving the production efficiency. Specifically in the illustrated embodiment, both thefirst bushing 152 and thesecond bushing 154 are installed in the mountingshell 112; thesecond bushing 154 is closer to thecommunication port 11a than thefirst bushing 152; thefirst bushing 152 Abutting with the limitingportion 11b; therotating shaft 121 is rotatably passed through thefirst bushing 152 and thesecond bushing 154 .

第一轴套152和转轴121共同构成轴承结构。第一轴套152具有第一轴孔 152a，转子12(具体为转轴121)能够转动地穿设于第一轴孔152a，第一轴孔 152a的孔壁与转轴121之间具有供流体(例如清洗流体)流通的间隙。Thefirst bushing 152 and therotating shaft 121 together constitute a bearing structure. Thefirst shaft sleeve 152 has afirst shaft hole 152a. The rotor 12 (specifically, the rotating shaft 121) is rotatably penetrated through thefirst shaft hole 152a. cleaning fluid) through the gap.

请一并参阅图11，具体地，第一轴套152包括盘部1522及形成在盘部1522 的一表面的圆台部1524，第一轴孔152a从盘部1522的远离圆台部1524的表面延伸至圆台部1524的远离盘部1522的一端的端面。其中，盘部1522的远离圆台部1524的一侧与限位部11b抵接。Please also refer to FIG. 11 , specifically, thefirst bushing 152 includes adisc portion 1522 and a circulartruncated portion 1524 formed on a surface of thedisc portion 1522 , and thefirst shaft hole 152 a extends from a surface of thedisc portion 1522 away from the circulartruncated portion 1524 To the end face of the end of the circulartruncated portion 1524 away from thedisk portion 1522 . Among them, the side of thedisk portion 1522 away from the circulartruncated portion 1524 is in contact with thestopper portion 11b.

请一并参阅图10、图12和图13，第二轴套154与转轴121共同构成轴承结构。其中，第二轴套154包括环本体1542及从环本体1542上延伸出的延伸部1544，即环本体1542与延伸部1544组成一体件。通过环本体1542与延伸部1544组成一体件能够简化驱动装置10的装配，且能够使转轴121在旋转中更加地稳定。其中，延伸部1544与第一轴套152抵接，以使环本体1542与第一轴套152间隔，从而对第一轴套152和环本体1542的相对位置进行定位，其中，转子12能够转动地穿设于环本体1542。具体地，环本体1542具有第二轴孔154a，转轴121能够转动地穿设于第二轴孔154a，第二轴孔154a的孔壁与转轴121之间具有供流体(例如清洗流体)流通的间隙。Please refer to Fig. 10, Fig. 12 and Fig. 13 together, thesecond shaft sleeve 154 and therotating shaft 121 together form a bearing structure. Thesecond shaft sleeve 154 includes aring body 1542 and anextension portion 1544 extending from thering body 1542, that is, thering body 1542 and theextension portion 1544 form an integral piece. By forming thering body 1542 and theextension portion 1544 into one piece, the assembly of the drivingdevice 10 can be simplified, and therotating shaft 121 can be more stable during rotation. Theextension portion 1544 abuts against thefirst bushing 152 to space thering body 1542 from thefirst bushing 152, so as to locate the relative positions of thefirst bushing 152 and thering body 1542, wherein therotor 12 can rotate The ground passes through thering body 1542 . Specifically, thering body 1542 has asecond shaft hole 154a, therotating shaft 121 is rotatably penetrated through thesecond shaft hole 154a, and a hole wall of thesecond shaft hole 154a and therotating shaft 121 is provided with a fluid (eg cleaning fluid) for circulating gap.

具体在图示的实施例中，延伸部1544为环形，延伸部1544与环本体1542 共轴，延伸部1544套设于圆台部1524上，延伸部1544的远离环本体1542的一端的端面与盘部1522抵接。其中，圆台部1524的外径与延伸部1544的内径相适配。Specifically in the illustrated embodiment, theextension portion 1544 is annular, theextension portion 1544 is coaxial with thering body 1542 , theextension portion 1544 is sleeved on the circulartruncated portion 1524 , and the end face of theextension portion 1544 at one end away from thering body 1542 is connected to thedisk portion 1522 abuts. The outer diameter of the circulartruncated portion 1524 is adapted to the inner diameter of theextension portion 1544.

请再次结合图9和图10，进一步地，转轴121包括轴本体1212和环设于轴本体1212的限位环1214，轴本体1212能够转动地穿设于第一轴套152和环本体1542，轴本体1212的一端收容于驱动壳11，另一端从连通口11a延伸至驱动壳11外、并与叶轮30固接；限位环1214位于环本体1542和第一轴套152 之间，且限位环1214位于轴本体1212和延伸部1544之间，限位环1214的外径分别大于环本体1542的内径和第一轴套152的内径，以在轴本体1212的延伸方向上对转轴121限位，避免转轴121在转轴121的延伸方向上相对于驱动壳11发生大幅度移动。Please refer to FIG. 9 and FIG. 10 again. Further, therotating shaft 121 includes ashaft body 1212 and alimit ring 1214 arranged around theshaft body 1212. Theshaft body 1212 is rotatably penetrated through thefirst shaft sleeve 152 and thering body 1542. One end of theshaft body 1212 is accommodated in thedrive housing 11, and the other end extends from thecommunication port 11a to the outside of thedrive housing 11 and is fixedly connected with theimpeller 30; the limitingring 1214 is located between thering body 1542 and thefirst bushing 152, and limits Theposition ring 1214 is located between theshaft body 1212 and theextension part 1544 , and the outer diameter of theposition ring 1214 is larger than the inner diameter of thering body 1542 and the inner diameter of thefirst sleeve 152 respectively, so as to limit therotation shaft 121 in the extension direction of theshaft body 1212 . position to prevent therotating shaft 121 from moving substantially relative to thedrive housing 11 in the extending direction of therotating shaft 121 .

其中，延伸部1544的内径大于限位环1214的外径，延伸部1544和限位环 1214之间形成供流体流通的间隙。从清洗管线411中通入驱动壳11内部的清洗流体，流经第一轴孔152a和转轴121之间的间隙、限位环121a与延伸部1544 之间的间隙、第二轴孔154a的孔壁和转轴121之间的间隙，而从连通口11a进入套管组件20内，不仅能够起到反冲洗的作用，还能起到转轴121和第一轴套 152之间、转轴121与第二轴套154之间的润滑作用。The inner diameter of the extendingportion 1544 is larger than the outer diameter of the limitingring 1214, and a gap for fluid circulation is formed between the extendingportion 1544 and the limitingring 1214. The cleaning fluid introduced into thedrive housing 11 from thecleaning line 411 flows through the gap between thefirst shaft hole 152a and therotating shaft 121, the gap between thelimit ring 121a and theextension portion 1544, and the hole of thesecond shaft hole 154a The gap between the wall and therotating shaft 121, and entering thecasing assembly 20 from thecommunication port 11a can not only play the role of backwashing, but also play the role between therotating shaft 121 and thefirst sleeve 152, between therotating shaft 121 and thesecond sleeve 152. Lubrication betweenbushings 154 .

请再次结合图11～图13，具体地，第一轴套152的朝向限位环1214的一侧上还开设有第一导流槽152b，第一导流槽152b与第一轴孔152a连通。由于第一导流槽152b设置在第一轴套152的朝向限位环1214的一侧，第一导流槽152b 也连通至延伸部1544和限位环1214之间的间隙，第一导流槽152b能够有利于流体流通，降低限位环1214与第一轴套152抵接时对流体流通的影响。具体地，第一导流槽152b开设于圆台部1524的远离盘部1522的一侧上。Please refer to FIG. 11 to FIG. 13 again. Specifically, the side of thefirst bushing 152 facing the limitingring 1214 is further provided with afirst guide groove 152b, and thefirst guide groove 152b communicates with thefirst shaft hole 152a . Since thefirst guide groove 152b is disposed on the side of thefirst bushing 152 facing thelimit ring 1214, thefirst guide groove 152b also communicates with the gap between theextension part 1544 and thelimit ring 1214, and thefirst guide groove 152b Thegrooves 152b can facilitate the fluid flow and reduce the influence on the fluid flow when the limitingring 1214 is in contact with thefirst bushing 152 . Specifically, thefirst guide groove 152b is opened on the side of the circulartruncated portion 1524 away from thedisk portion 1522 .

具体地，第二轴套154的环本体1542的朝向限位环1214的一侧上还开设有第二导流槽154b，第二导流槽154b与第二轴孔154a连通。由于第二导流槽 154b设置环本体1542的朝向限位环1214的一侧，第二导流槽154b也连通至延伸部1544和限位环1214之间的间隙，第二导流槽154b能够有利于流体在延伸部1544和限位环1214之间的间隙和第二轴孔154a之间流通，降低限位环 1214与环本体1542抵接时对流体流通的影响。Specifically, the side of thering body 1542 of thesecond bushing 154 facing thelimit ring 1214 is further provided with asecond guide groove 154b, and thesecond guide groove 154b communicates with thesecond shaft hole 154a. Since thesecond guide groove 154b is disposed on the side of thering body 1542 facing thelimit ring 1214, thesecond guide groove 154b also communicates with the gap between theextension part 1544 and thelimit ring 1214, thesecond guide groove 154b can This facilitates fluid flow between the gap between theextension portion 1544 and thelimit ring 1214 and thesecond shaft hole 154a, and reduces the influence on the fluid flow when thelimit ring 1214 abuts against thering body 1542.

需要说明的是，在其它实施例中，还可以在第一轴套152和环本体1542 中的其中一个设置导流槽，或者不设置导流槽。It should be noted that, in other embodiments, a guide groove may also be provided in one of thefirst bushing 152 and thering body 1542, or no guide groove may be provided.

可以理解，延伸部1544不限于为环形，在一个实施例中，延伸部1544为杆状结构，延伸部1544为多个，多个延伸部1544环绕转子的旋转轴线设置，第一轴套152上还开设有定位槽，延伸部1544的远离环本体1542的一端收容于定位槽中，以对第二轴套154定位。It can be understood that theextension portion 1544 is not limited to be annular. In one embodiment, theextension portion 1544 is a rod-shaped structure, and there aremultiple extension portions 1544. The plurality ofextension portions 1544 are arranged around the rotation axis of the rotor. A positioning groove is also provided, and one end of theextension portion 1544 away from thering body 1542 is received in the positioning groove to position thesecond bushing 154 .

具体地，第一轴套152的靠近环本体1542的一侧的孔径大于第一轴套152 的背离环本体1542的一侧的孔径。如此设置，不仅能够较小第一轴套152与转轴121之间接触面积，减小摩擦，而且有利于流体的流动，以及减小转轴121 的晃动幅度。Specifically, the hole diameter of the side of thefirst bushing 152 close to thering body 1542 is larger than the hole diameter of the side of thefirst bushing 152 facing away from thering body 1542 . This arrangement can not only reduce the contact area between thefirst bushing 152 and therotating shaft 121, reduce friction, but also facilitate the flow of fluid and reduce the shaking amplitude of therotating shaft 121.

具体地，环本体1542的靠近第一轴套152的一侧的孔径大于环本体1542 的背离第一轴套152的一侧的孔径。如此设置，不仅能够较小环本体1542与转轴121之间接触面积，减小摩擦，而且有利于流体的流动，以及减小转轴121 的晃动幅度和防止套管组件20中的血液通过第二轴孔154a进入驱动壳11中。Specifically, the hole diameter of the side of thering body 1542 close to thefirst bushing 152 is larger than the hole diameter of the side of thering body 1542 facing away from thefirst bushing 152 . This arrangement can not only reduce the contact area between thering body 1542 and therotating shaft 121, reduce friction, but also facilitate the flow of fluid, reduce the shaking amplitude of therotating shaft 121, and prevent the blood in thecannula assembly 20 from passing through the second shaft. Thehole 154a enters into thedrive housing 11 .

在其中一个实施例中，环本体1542的远离第一轴套152的一端与转轴121 之间的间隙小于或等于2μm。由于最小的红血球(直径约为8μm，厚度约为2μm) 难以进入宽度小于或等于2μm的间隙，加之反向冲洗的清洗流体经过此间隙，阻止了血液通过第二轴孔154a进入驱动壳11的内部。In one embodiment, the gap between the end of thering body 1542 away from thefirst bushing 152 and therotating shaft 121 is less than or equal to 2 μm. Since it is difficult for the smallest red blood cells (about 8 μm in diameter and about 2 μm in thickness) to enter the gap with a width of less than or equal to 2 μm, and the backflushing cleaning fluid passes through this gap, blood is prevented from entering thedrive housing 11 through thesecond shaft hole 154a. internal.

具体地，第二轴孔154a具有直孔部154c及与直孔部154c连通的锥形孔部 154d，锥形孔部154d的孔径较小的一端与直孔部154c连通，孔径较大的一端朝向环本体1542，转子12(具体为转轴121)能够转动地穿设于直孔部154c 和锥形孔部154d。Specifically, thesecond shaft hole 154a has astraight hole portion 154c and atapered hole portion 154d communicating with thestraight hole portion 154c. The taperedhole portion 154d has an end with a smaller diameter communicated with thestraight hole portion 154c, and an end with a larger diameter Facing thering body 1542, the rotor 12 (specifically, the rotating shaft 121) is rotatably penetrated through thestraight hole portion 154c and the taperedhole portion 154d.

具体地，直孔部154c在转子12的旋转轴线方向上的长度大于或等于0.5 毫米。即在图示的实施例中，直孔部154c在转轴121的延伸方向上的长度大于或等于0.5毫米，以更好地对转轴121进行支撑。Specifically, the length of thestraight hole portion 154c in the rotational axis direction of therotor 12 is greater than or equal to 0.5 mm. That is, in the illustrated embodiment, the length of thestraight hole portion 154c in the extending direction of therotating shaft 121 is greater than or equal to 0.5 mm, so as to better support therotating shaft 121.

在图示的实施例中，第一轴孔152a也类似于第二轴孔154a，具有直孔部和锥形孔部，第一轴孔152a的锥形孔部较其直孔部更靠近环本体1542。In the illustrated embodiment, thefirst shaft hole 152a is also similar to thesecond shaft hole 154a, and has a straight hole portion and a tapered hole portion, and the tapered hole portion of thefirst shaft hole 152a is closer to the ring than the straight hole portion thereof.Body 1542.

可以理解，第一轴孔152a和第二轴孔154a也不限于为上述结构，在其它实施例中，第二轴孔154a也可以为从靠近第一轴套154的一侧到远离第一轴套 154的一侧，第二轴孔154a的逐渐减小；在与图13所示的视角相同的视角下，第二轴孔154a的孔壁可以相对于转轴121的延伸方向呈倾斜的直面，或者呈弧面状；或者，从靠近第一轴套154的一侧到远离第一轴套154的一侧，第二轴孔154的孔径相等。第一轴孔152a也可以为第二轴孔154a类似的构造。在同一个实施例中，第一轴孔152a和第二轴孔154a的构造可以基本相同，也可以不相同。It can be understood that thefirst shaft hole 152a and thesecond shaft hole 154a are not limited to the above structures, and in other embodiments, thesecond shaft hole 154a can also be from the side close to thefirst shaft sleeve 154 to the side away from the first shaft On one side of thesleeve 154, thesecond shaft hole 154a gradually decreases; under the same viewing angle as that shown in FIG. Or it is arc-shaped; or, from the side close to thefirst shaft sleeve 154 to the side away from thefirst shaft sleeve 154 , the diameters of the second shaft holes 154 are equal. Thefirst shaft hole 152a may also be of a similar configuration to thesecond shaft hole 154a. In the same embodiment, the configurations of thefirst shaft hole 152a and thesecond shaft hole 154a may be substantially the same or different.

请参阅图14，具体地，限位环1214具有外环面1214a及与外环面1214a 连接的两端面1214b，外环面1214a和两端面1214b的连接处均设有倒角1214c。在外环面1214a和和两端1214b面的连接处均设置倒角1214c，不仅能够降低限位环1214与第一轴套152、第二轴套154之间的摩擦，而且还有利于流体的流通。Please refer to FIG. 14 , specifically, the limitingring 1214 has an outerannular surface 1214a and twoend surfaces 1214b connected with the outerannular surface 1214a, andchamfers 1214c are provided at the connection between the outerannular surface 1214a and the twoend surfaces 1214b.Chamfers 1214c are provided at the connection between theouter ring surface 1214a and the surfaces of bothends 1214b, which can not only reduce the friction between thelimit ring 1214 and thefirst bushing 152 and thesecond bushing 154, but also facilitate the flow of fluid. circulation.

请结合图15，具体地，第一轴套152和第二轴套154均与驱动壳11固定连接。在其中一个实施例中，第一轴套152和第二轴套154均与驱动壳11通过胶黏剂粘结固定。具体在图示的实施例中，安装壳112的靠近壳本体111的一端开设有与安装壳112的内孔连通的第一置胶槽112a，第一置胶槽112a中的胶黏剂将安装壳112、第一轴套152和延伸部1544的远离环本体1542的一端粘接固定。第二轴套154的外壁上还开设有第二置胶槽154e，第二置胶槽154e 中的胶黏剂将安装壳112、第二轴套154固定粘结。Please refer to FIG. 15 , specifically, both thefirst bushing 152 and thesecond bushing 154 are fixedly connected with thedrive housing 11 . In one embodiment, both thefirst bushing 152 and thesecond bushing 154 are fixed to thedrive housing 11 by adhesive bonding. Specifically, in the illustrated embodiment, one end of the mountingshell 112 close to theshell body 111 is provided with afirst glue groove 112a that communicates with the inner hole of theinstallation shell 112, and the adhesive in thefirst glue groove 112a will be installed Theshell 112 , thefirst bushing 152 and one end of theextension portion 1544 away from thering body 1542 are glued and fixed. The outer wall of thesecond shaft sleeve 154 is further provided with asecond glue groove 154e, and the adhesive in thesecond glue groove 154e firmly bonds the mountingshell 112 and thesecond shaft sleeve 154.

请再次结合图8，进一步地，磁组件122还包括第二磁体1223，第二磁体 1223与转轴121固定连接；定子机构13还包括动力定子132，动力定子132 和驱动定子131沿转轴121的轴线设置，且动力定子132较驱动定子131更靠近叶轮30，即在转轴121的延伸方向上，动力定子132布置在叶轮30和驱动定子131之间。其中，转轴121能够转动地穿设于动力定子132，动力定子132 能够产生与第二磁体1223相互作用的旋转磁场。驱动定子131和动力定子132 能够分别驱动第一磁体1222和第二磁体1223转动，而使驱动定子131和动力定子132能够共同带动转轴121绕转轴121的轴线旋转，从而带动叶轮30旋转，以给叶轮30的旋转提供更大的驱动力。Referring again to FIG. 8 , further, themagnetic assembly 122 further includes asecond magnet 1223 , which is fixedly connected to therotating shaft 121 ; thestator mechanism 13 further includes apower stator 132 , and thepower stator 132 and the drivingstator 131 are along the axis of therotating shaft 121 . Thepower stator 132 is disposed closer to theimpeller 30 than the drivingstator 131 , that is, in the extending direction of therotating shaft 121 , thepower stator 132 is arranged between theimpeller 30 and the drivingstator 131 . Therotating shaft 121 is rotatably penetrated through thepower stator 132 , and thepower stator 132 can generate a rotating magnetic field that interacts with thesecond magnet 1223 . The drivingstator 131 and thepower stator 132 can respectively drive thefirst magnet 1222 and thesecond magnet 1223 to rotate, so that the drivingstator 131 and thepower stator 132 can jointly drive therotating shaft 121 to rotate around the axis of therotating shaft 121, thereby driving theimpeller 30 to rotate to give Rotation of theimpeller 30 provides greater driving force.

在图示的实施例中，第一磁体1222和第二磁体1223布置在驱动定子131 和动力定子132之间。具体地，磁组件122还包括与转轴121固接的飞轮1224，飞轮1224位于动力定子132和驱动定子131之间，第一磁体1222和第二磁体 1223均设置在飞轮1224上。In the illustrated embodiment, thefirst magnet 1222 and thesecond magnet 1223 are arranged between thedrive stator 131 and thepower stator 132 . Specifically, themagnet assembly 122 further includes aflywheel 1224 fixed to therotating shaft 121, theflywheel 1224 is located between thepower stator 132 and the drivingstator 131, and both thefirst magnet 1222 and thesecond magnet 1223 are disposed on theflywheel 1224.

飞轮1224固定地套设在转轴121的远离叶轮30的一端。其中，飞轮1224 与转轴121可以为一体成型，或者通过粘接、焊接等方式与转轴121固定。Theflywheel 1224 is fixedly sleeved on the end of therotating shaft 121 away from theimpeller 30 . Theflywheel 1224 and therotating shaft 121 may be integrally formed, or fixed to therotating shaft 121 by means of bonding, welding, or the like.

通过设置飞轮1224可以增加磁体与转轴121的连接强度，提高转轴121 旋转的稳定性；另外，通过将第一磁体1222和第二磁体1223均设置在同一个飞轮1224上，能够减少转轴121在旋转过程中的晃动，使转轴121在旋转过程中更加稳定。By arranging theflywheel 1224, the connection strength between the magnet and therotating shaft 121 can be increased, and the rotation stability of therotating shaft 121 can be improved; in addition, by arranging thefirst magnet 1222 and thesecond magnet 1223 on thesame flywheel 1224, the rotation of therotating shaft 121 can be reduced. The shaking during the process makes therotating shaft 121 more stable during the rotation.

请结合图16和图17，飞轮1224包括盘状部1224a和管状部1224b，管状部1224b固定地穿设于盘状部1224a的中部、并与盘状部1224a共轴，转轴121 的远离叶轮30的一端固定地收容于管状部1224b内，第一磁体1222和第二磁体1223分别设置在盘状部1224a的相背离的两侧，从而方便第一磁体1222和第二磁体1223的装配，以便于更好地将第一磁体1222和第二磁体1223与转轴 121固定。16 and FIG. 17, theflywheel 1224 includes a disk-shaped portion 1224a and atubular portion 1224b, thetubular portion 1224b is fixedly penetrated in the middle of the disk-shaped portion 1224a, and is coaxial with the disk-shaped portion 1224a, and therotating shaft 121 is away from theimpeller 30 One end of the disk-shapedportion 1224b is fixedly accommodated in thetubular portion 1224b, and thefirst magnet 1222 and thesecond magnet 1223 are respectively arranged on opposite sides of the disk-shaped portion 1224a, so as to facilitate the assembly of thefirst magnet 1222 and thesecond magnet 1223, and facilitate the assembly of thefirst magnet 1222 and thesecond magnet 1223. It is better to fix thefirst magnet 1222 and thesecond magnet 1223 with therotating shaft 121 .

请结合图18，具体地，第一磁体1222和第二磁体1223均为环状的海尔贝克阵列磁铁。第一磁体1222包括多个充磁方向与第一磁体1222的轴线平行的第一磁块1222a，第二磁体1223包括多个充磁方向与第二磁体1223的轴线平行的第二磁块1223a，多个第二磁块1223a和多个第一磁块1222a分别环绕转轴121设置在盘状部1224a的相背离的两侧。在转轴121的延伸方向上，每个第二磁块1223a与一个第一磁块1222a相对设置，且相对设置的第二磁块1223a 与第一磁块1222a的朝向盘状部1224a的一侧的极性相反。如此设置可以方便第一磁体1222和第二磁体1223的安装，避免第一磁体1222的磁块和第二磁体 1223的磁块相互排斥而造成装配困难的问题。Please refer to FIG. 18 , specifically, thefirst magnet 1222 and thesecond magnet 1223 are both ring-shaped Halbach array magnets. Thefirst magnet 1222 includes a plurality of first magnet blocks 1222 a whose magnetization directions are parallel to the axis of thefirst magnet 1222 , thesecond magnet 1223 includes a plurality of second magnet blocks 1223 a whose magnetization directions are parallel to the axis of thesecond magnet 1223 , The plurality of secondmagnetic blocks 1223a and the plurality of firstmagnetic blocks 1222a are respectively disposed on opposite sides of the disc portion 1224a around therotating shaft 121 . In the extending direction of therotating shaft 121 , eachsecond magnet block 1223a is disposed opposite to afirst magnet block 1222a, and thesecond magnet block 1223a and thefirst magnet block 1222a disposed opposite to the side facing the disk-shaped portion 1224a opposite polarity. This arrangement can facilitate the installation of thefirst magnet 1222 and thesecond magnet 1223, and avoid the problem of difficulty in assembly caused by the magnetic block of thefirst magnet 1222 and the magnetic block of thesecond magnet 1223 being mutually repelled.

在一些实施例中，第一磁体1222还包括多个沿第一磁体1222的周向充磁的第三磁块1222b，周向充磁的第三磁块1222b和沿平行于第一磁体1222的轴线充磁的第一磁块1222a沿第一磁体1222所在的圆周交替设置。其中，相邻的第一磁块1222a的充磁方向相反，例如，相邻的第一磁体1222中的一个的充磁方向是从第一磁块1222a的背离盘状部1224a的一侧指向朝向盘状部1224a的一侧，另一个的充磁方向则为从第一磁块1222a的朝向盘状部1224a的一侧指向背离盘状部1224a的一侧。相邻的第三磁块1222b的充磁方向在第一磁体1222 所在的圆周上相反。In some embodiments, thefirst magnet 1222 further includes a plurality ofthird magnet blocks 1222b magnetized along a circumferential direction of thefirst magnet 1222 , athird magnet block 1222b magnetized circumferentially, and a plurality of magnetizedthird magnet blocks 1222b magnetized along an axis parallel to thefirst magnet 1222 Thefirst magnet blocks 1222a are alternately arranged along the circumference where thefirst magnets 1222 are located. Wherein, the magnetization directions of the adjacentfirst magnet blocks 1222a are opposite, for example, the magnetization direction of one of the adjacent first magnet blocks 1222 is directed from the side of thefirst magnet block 1222a away from the disk-shaped portion 1224a. The magnetization direction of one side and the other of the disk-shaped portion 1224a is from the side of thefirst magnet block 1222a toward the disk-shaped portion 1224a to the side away from the disk-shaped portion 1224a. The magnetization directions of the adjacentthird magnet blocks 1222b are opposite on the circumference where thefirst magnet 1222 is located.

对应地，第二磁体1223还包括多个沿第二磁体1223的周向充磁的第四磁块1223b，第四磁块1223b和第二磁块1223a沿第二磁体1223所在的圆周交替设置。其中，相邻的第二磁块1223a的充磁方向相反，相邻的第四磁块1223b 的充磁方向在第二磁体1223所在的圆周上相反。Correspondingly, thesecond magnet 1223 further includes a plurality offourth magnet blocks 1223b magnetized along the circumference of thesecond magnet 1223. The fourth magnet blocks 1223b and thesecond magnet blocks 1223a are alternately arranged along the circumference of thesecond magnet 1223. Wherein, the magnetization directions of the adjacentsecond magnet blocks 1223a are opposite, and the magnetization directions of the adjacentfourth magnet blocks 1223b are opposite on the circumference where thesecond magnet 1223 is located.

需要说明的是，第三磁块1222b和第四磁块1223b的充磁方向不限于为周向充磁，在一些实施例中，第三磁块1222b和第四磁块1223b的充磁方向还可以为相对转轴121的轴线是倾斜的。It should be noted that the magnetization directions of thethird magnet block 1222b and thefourth magnet block 1223b are not limited to circumferential magnetization. In some embodiments, the magnetization directions of thethird magnet block 1222b and thefourth magnet block 1223b may also be It is inclined with respect to the axis of therotating shaft 121 .

本实施例中，第一磁体1222和第二磁体1223均设置八个磁块，即，第一磁块1222a、第二磁块1223a、第三磁块1222b和第四磁块1223b均为四个。第一磁块1222a、第二磁块1223a、第三磁块1222b和第四磁块1223b均为扇环形磁铁，第一磁体1222和第二磁体1223大致为圆环状结构。可以理解的是，在其他实施例中，第一磁体1222和第二磁体1223还可以由更多或更少的磁块组成，如两个、四个、六个或十个等。In this embodiment, thefirst magnet 1222 and thesecond magnet 1223 are each provided with eight magnet blocks, that is, thefirst magnet block 1222a, thesecond magnet block 1223a, thethird magnet block 1222b and thefourth magnet block 1223b are all four . Thefirst magnet 1222a, thesecond magnet 1223a, thethird magnet 1222b and thefourth magnet 1223b are all sector ring magnets, and thefirst magnet 1222 and thesecond magnet 1223 are substantially annular structures. It can be understood that, in other embodiments, thefirst magnet 1222 and thesecond magnet 1223 may also be composed of more or less magnet blocks, such as two, four, six or ten, etc.

为了方便第一磁体1222和第二磁体1223的安装，飞轮1224上还设有用于确定第一磁块1222a的安装位置和第二磁块1223a的安装位置的标识部1224c。标识部1224c可以设置为槽、刻度线或者是标识等。在安装第一磁块1222a和第二磁块1223a时，只要使用标识部1224c标识出其中一个第一磁块1222a和其中一个第二磁块1223a的位置，就可以确定剩余磁块的安装位置，从而方便第一磁体1222和第二磁体1223的安装。具体地，标识部1224c可以在管状部 1224b及盘状部1224a中的至少一个上。In order to facilitate the installation of thefirst magnet 1222 and thesecond magnet 1223, theflywheel 1224 is also provided with anidentification portion 1224c for determining the installation position of thefirst magnet 1222a and the installation position of thesecond magnet 1223a. The markingportion 1224c may be provided as a groove, a graduation line, or a marking or the like. When installing thefirst magnet block 1222a and thesecond magnet block 1223a, as long as theidentification part 1224c is used to identify the position of one of the first magnet blocks 1222a and one of thesecond magnet blocks 1223a, the installation position of the remaining magnet blocks can be determined, Thus, the installation of thefirst magnet 1222 and thesecond magnet 1223 is facilitated. Specifically, theidentification portion 1224c may be on at least one of thetubular portion 1224b and the disc portion 1224a.

在其中一个实施例中，飞轮1224通过粘接的方式与转轴121固定。请结合图15和图17，转轴121的远离叶轮30的一端的端部开设有点胶槽121a，管状部1224b的内壁上设置与点胶槽121a相抵接的止位凸起1224d。如此可以通过在点胶槽121a内布置胶水以方便转轴121与止位凸起1224d固接。In one embodiment, theflywheel 1224 is fixed to therotating shaft 121 by means of bonding. 15 and 17, the end of therotating shaft 121 away from the end of theimpeller 30 is provided with a dispensinggroove 121a, and the inner wall of thetubular portion 1224b is provided with astop protrusion 1224d abutting against the dispensinggroove 121a. In this way, by arranging glue in theglue dispensing groove 121a, therotating shaft 121 and thestop protrusion 1224d can be easily fixed.

进一步地，点胶槽121a沿垂直于转轴121的轴线方向延伸，且点胶槽121a 的端部延伸至转轴121的外圆周面。如此设置可以使对点胶槽121a布置胶水，胶水溢流至转轴121的外圆周面，以粘接管状部1224b的内周壁和转轴121的周面，使得转轴121与飞轮1224之间可以更好地固定，或者，也方便用于粘结转轴121和管状部1224b之间的多余的胶水溢流到点胶槽121a中。Further, theglue dispensing groove 121 a extends in a direction perpendicular to the axis of therotating shaft 121 , and the end of theglue dispensing groove 121 a extends to the outer circumferential surface of therotating shaft 121 . In this way, glue can be arranged on the dispensinggroove 121a, and the glue overflows to the outer peripheral surface of therotating shaft 121 to bond the inner peripheral wall of thetubular portion 1224b and the peripheral surface of therotating shaft 121, so that therotating shaft 121 and theflywheel 1224 can be better Alternatively, it is also convenient for the excess glue used for bonding between therotating shaft 121 and thetubular portion 1224b to overflow into theglue dispensing groove 121a.

在本实施例中，飞轮1224还包括环绕盘状部1224a设置的外环壁1224e，外环壁1224e、管状部1224b和盘状部1224a共同围设出分别容置第一磁体1222 和第二磁体1223的第一容置部和第二容置部，且第一容置部和第二容置部被盘状部1224a分隔。如此设置能够对第一磁体1222和第二磁体1223限位，不仅方便第一磁体1222和第二磁体1223的安装，而且也使得第一磁体1222和第二磁体1223和飞轮1224结合更加稳固。In this embodiment, theflywheel 1224 further includes an outerannular wall 1224e disposed around the disc-shaped portion 1224a, and the outerannular wall 1224e, thetubular portion 1224b and the disc-shaped portion 1224a together define a space for accommodating thefirst magnet 1222 and the second magnet respectively. The first accommodating portion and the second accommodating portion of 1223, and the first accommodating portion and the second accommodating portion are separated by the disc-shaped portion 1224a. This arrangement can limit the position of thefirst magnet 1222 and thesecond magnet 1223, which not only facilitates the installation of thefirst magnet 1222 and thesecond magnet 1223, but also makes the combination of thefirst magnet 1222 and thesecond magnet 1223 and theflywheel 1224 more stable.

在本实施例中，在管状部1224b的轴向上，第一磁体1222的背离盘状部 1224a的一侧高出外环壁1224e一段距离，第二磁体1223的背离盘状部1224a 的一侧高出外环壁1224e一段距离，以方便第一磁体1222、第二磁体1223装配于飞轮1224上。In this embodiment, in the axial direction of thetubular portion 1224b, the side of thefirst magnet 1222 facing away from the disk-shaped portion 1224a is higher than theouter ring wall 1224e by a distance, and the side of thesecond magnet 1223 facing away from the disk-shaped portion 1224a is higher than theouter ring wall 1224e. It is higher than theouter ring wall 1224e by a distance, so that thefirst magnet 1222 and thesecond magnet 1223 can be assembled on theflywheel 1224 conveniently.

需要说明的是，飞轮1224不限于为上述结构，在一些实施例中，飞轮1224 不具有外环壁1224e；在一些实施例中，飞轮1224不具有外环壁1224e和管状部1224b，此时，转轴121固定地穿设于盘状部1224a，例如，盘状部1224a的中心。相对于仅具有盘状部1224a的飞轮1224，设置管状部1224b能够使飞轮 1224与转轴121更加稳定地连接。It should be noted that theflywheel 1224 is not limited to the above structure. In some embodiments, theflywheel 1224 does not have theouter ring wall 1224e; in some embodiments, theflywheel 1224 does not have theouter ring wall 1224e and thetubular portion 1224b. In this case, Therotating shaft 121 is fixedly penetrated through the disk-shaped portion 1224a, eg, the center of the disk-shaped portion 1224a. The provision of thetubular portion 1224b enables theflywheel 1224 to be connected to therotating shaft 121 more stably than theflywheel 1224 having only the disk portion 1224a.

请结合图8，动力定子132的结构与驱动定子131的结构类似。其中，动力定子132包括第二背板1321、多个第二磁芯1322及多个第二线圈1323。多个第二磁芯1322环绕转轴121间隔设置一周，每个第二磁芯1322的延伸方向均与转轴121的轴线平行。每个第二磁芯1322的一端与第二背板1321固接，另一端延伸至靠近第二磁体1223。换而言之，在转轴121的轴向上，驱动定子 131和动力定子132反向设置。每个第二线圈1323分别缠于相应的第二磁芯 1322。第二线圈1323能够产生与第二磁体1223相互作用的旋转磁场。Please refer to FIG. 8 , the structure of thepower stator 132 is similar to that of thedrive stator 131 . Thepower stator 132 includes asecond backplane 1321, a plurality of secondmagnetic cores 1322 and a plurality ofsecond coils 1323. A plurality of secondmagnetic cores 1322 are arranged at intervals around therotating shaft 121, and the extending direction of each secondmagnetic core 1322 is parallel to the axis of therotating shaft 121. One end of each secondmagnetic core 1322 is fixedly connected to thesecond back plate 1321 , and the other end extends to be close to thesecond magnet 1223 . In other words, in the axial direction of therotating shaft 121, the drivingstator 131 and thepower stator 132 are arranged in opposite directions. Each of thesecond coils 1323 is wound around the corresponding secondmagnetic core 1322, respectively. Thesecond coil 1323 can generate a rotating magnetic field that interacts with thesecond magnet 1223 .

其中，第一磁芯1312和第二磁芯1322包括磁柱，第一线圈1313缠绕于第一磁芯1312的磁柱上，第二线圈1323缠绕在第二磁芯1322的磁柱上。第一磁芯1312的磁柱的横截面积大于第二磁芯1322的磁柱的横截面积。即第一磁芯 1312的磁柱比第二磁芯1322的磁柱粗。The firstmagnetic core 1312 and the secondmagnetic core 1322 include magnetic columns, thefirst coil 1313 is wound on the magnetic column of the firstmagnetic core 1312 , and thesecond coil 1323 is wound on the magnetic column of the secondmagnetic core 1322 . The cross-sectional area of the magnetic column of the firstmagnetic core 1312 is larger than the cross-sectional area of the magnetic column of the secondmagnetic core 1322. That is, the magnetic column of the firstmagnetic core 1312 is thicker than the magnetic column of the secondmagnetic core 1322.

磁柱的横截面积越大，所产生的磁通量就越大，定子对磁体的扭矩就越大，所需电流越小，有利于降低功耗，减少发热。由于动力定子132的中部有转轴 121穿过，受到血泵100径向尺寸的限制，限制了第二磁芯1322的横截面积，而驱动定子131的中部没有转轴121穿过，使得第一磁芯1312能够选择较大的横截面积，换而言之，如此设置可以降低功耗，减少驱动装置10发热。The larger the cross-sectional area of the magnetic column, the larger the generated magnetic flux, the larger the torque of the stator to the magnet, and the smaller the required current, which is beneficial to reduce power consumption and heat generation. Because therotating shaft 121 passes through the middle of thepower stator 132, the cross-sectional area of the secondmagnetic core 1322 is limited by the radial size of theblood pump 100, and the middle of the drivingstator 131 does not pass through therotating shaft 121, so that the first magnetic Thecore 1312 can be selected to have a larger cross-sectional area, in other words, such a setting can reduce power consumption and reduce heat generation of the drivingdevice 10 .

在本实施例中，第一磁芯1312和第二磁芯1322均仅具有磁柱，即第一磁芯1312和第二磁芯1322均没有宽度较大的头部(即极靴)，在第一磁芯1312 和第二磁芯1322的长度方向上，其宽度是恒定的，整个第一磁芯1312均能够与第一磁体1222进行磁耦合，整个第二磁芯1322均能够与第二磁体1223进行磁耦合，相较于设置有极靴的磁芯，本申请能够减少磁损耗，增加第一磁芯1312 和第一磁体1222、第二磁芯1322和第二磁体1223之间的磁耦合密度，以增大驱动定子131对第一磁体1222的扭矩(在相等电流条件下)和动力定子132对第二磁体1223的扭矩(在相等电流条件下)。另外，没有头部的第一磁芯 1312和第二磁芯1322还能够大大降低相邻磁芯之间的接触而导致的局部磁短路造成的电机功率降低的问题。In this embodiment, both the firstmagnetic core 1312 and the secondmagnetic core 1322 only have magnetic columns, that is, neither the firstmagnetic core 1312 nor the secondmagnetic core 1322 has a head (ie, a pole piece) with a larger width. In the length direction of the firstmagnetic core 1312 and the secondmagnetic core 1322, the widths thereof are constant, the entire firstmagnetic core 1312 can be magnetically coupled with thefirst magnet 1222, and the entire secondmagnetic core 1322 can be magnetically coupled with the secondmagnetic core 1322. Themagnet 1223 is magnetically coupled. Compared with the magnetic core provided with the pole piece, the present application can reduce the magnetic loss and increase the magnetic force between the firstmagnetic core 1312 and thefirst magnet 1222, and the secondmagnetic core 1322 and thesecond magnet 1223. Coupling density to increase the torque of thedrive stator 131 to the first magnet 1222 (under equal current conditions) and the torque of thepower stator 132 to the second magnet 1223 (under equal current conditions). In addition, the firstmagnetic core 1312 and the secondmagnetic core 1322 without the head can also greatly reduce the problem of motor power reduction caused by partial magnetic short circuit caused by the contact between adjacent magnetic cores.

仅具有磁柱的第一磁芯1312和第二磁芯1322的横截面的形状可以为扇形、圆形、梯形、扇环形等等。如图19所示，在图示的实施例中，仅具有磁柱的第一磁芯1312和第二磁芯1322大致为三棱柱状，每个磁芯的一个棱边朝向转轴 121的轴线。在本实施例中，第一磁芯1312和第二磁芯1322的棱边均做了倒圆处理，通过将棱边倒圆处理可以方便后续线圈的缠绕，同时有利于保护线圈上包覆的绝缘材料。The shape of the cross section of the firstmagnetic core 1312 and the secondmagnetic core 1322 having only the magnetic column may be a sector, a circle, a trapezoid, a sector ring, or the like. As shown in FIG. 19 , in the illustrated embodiment, only the firstmagnetic core 1312 and the secondmagnetic core 1322 having magnetic columns are substantially triangular prisms, and one edge of each magnetic core faces the axis of therotating shaft 121. In this embodiment, the edges of the firstmagnetic core 1312 and the secondmagnetic core 1322 are rounded. By rounding the edges, the winding of subsequent coils can be facilitated, and at the same time, it is beneficial to protect the coils covered on the coils. Insulation Materials.

可以理解，在其它实施例中，第一磁芯1312和第二磁芯1322还可以包括设置在磁柱的一端的头部，第一背板1311与第一磁芯1312的磁柱的远离头部的一端接合；第二背板1321与第二磁芯1322的磁柱的远离头部的一端结合。或者，在一些实施例中，还可以为第一磁芯1312和第二磁芯1322中的一个同时具有磁柱和头部，另一个仅具有磁柱。It can be understood that, in other embodiments, the firstmagnetic core 1312 and the secondmagnetic core 1322 may further include a head disposed at one end of the magnetic column, and thefirst backplate 1311 and the firstmagnetic core 1312 are remote from the magnetic column of the head Thesecond back plate 1321 is combined with one end of the magnetic column of the secondmagnetic core 1322 away from the head. Alternatively, in some embodiments, one of the firstmagnetic core 1312 and the secondmagnetic core 1322 may have both a magnetic column and a head, and the other only has a magnetic column.

请再次参阅图14，为了使动力定子132的第二磁芯1322尽可能地粗，穿设于动力定子132的转轴121需较细，但是考虑到转轴121与轴套组件15需要配合，转轴121又需要较大的刚度和较耐磨，为此，转轴121的轴本体1212 具有第一配合段1212a和第二配合段1212b，在垂直于轴本体1212的延伸方向上，第一配合段1212a的横截面积大于第二配合段1212b的横截面积，即第一配合段1212a比第二配合段1212b要粗，第一配合段1212a穿设于轴套组件15，第二配合段1212b穿设于动力定子132。其中，限位环1214固定地设置于第一配合段1212a上。Please refer to FIG. 14 again, in order to make the secondmagnetic core 1322 of thepower stator 132 as thick as possible, therotating shaft 121 passing through thepower stator 132 needs to be thinner. It also requires greater rigidity and wear resistance. For this reason, theshaft body 1212 of therotating shaft 121 has afirst matching section 1212a and asecond matching section 1212b. The cross-sectional area is larger than the cross-sectional area of thesecond matching section 1212b, that is, thefirst matching section 1212a is thicker than the second matching section1212b. Power stator 132 . Wherein, the limitingring 1214 is fixedly disposed on thefirst matching segment 1212a.

为了避免清洗流体被污染和/或驱动装置10内的元件被腐蚀，驱动装置10 的驱动定子131和动力定子132上均上包覆有防水密封膜。其中，防水密封膜的材料可以为硅胶、胶水等。In order to prevent the cleaning fluid from being polluted and/or the components in the drivingdevice 10 from being corroded, the drivingstator 131 and thepower stator 132 of the drivingdevice 10 are both covered with a waterproof sealing film. Wherein, the material of the waterproof sealing film can be silica gel, glue, etc.

上述驱动装置10至少具有以下优点：Theabove driving device 10 has at least the following advantages:

(1)上述驱动装置10用于支撑转子12的第一轴套152和第二轴套154 沿转子12的旋转轴线设置，且第一轴套152和第二轴套154中的一个与驱动壳 11的限位件11b抵接，以支撑第一轴套152和第二轴套154中的一个，第二轴套154的支撑转子12的环本体1542通过第二轴承154的延伸部1544与第一轴套152抵接，以支撑分隔环本体1542和第一轴套152，以更好地支撑转子12；且延伸部1544和环本体1542为一体件，能够减少零件的装配，有利于简化驱动装置10的装配；进一步将连通口11a设置为能够供第一轴套152和第二轴套154穿过，以使第一轴套152和第二轴套154能够从连通口11a装入驱动壳11 的安装壳112中，以使驱动装置10的装配更加方便；且上述结构设计使得驱动装置10不仅装配简单方便，而且能够提高驱动装置10的装配精度，提高生产效率。(1) Thefirst bushing 152 and thesecond bushing 154 of the above-mentioneddriving device 10 for supporting therotor 12 are arranged along the rotation axis of therotor 12, and one of thefirst bushing 152 and thesecond bushing 154 is connected to the drive casing Thestopper 11b of 11 abuts to support one of thefirst bushing 152 and thesecond bushing 154 , and thering body 1542 of thesecond bushing 154 supporting therotor 12 is connected to thesecond bushing 154 through theextension 1544 of thesecond bearing 154 . Abushing 152 abuts to support the separatingring body 1542 and thefirst bushing 152 to better support therotor 12; and theextension 1544 and thering body 1542 are one piece, which can reduce the assembly of parts and facilitate the simplification of driving Assembly of thedevice 10; further setting thecommunication port 11a so that thefirst bushing 152 and thesecond bushing 154 can pass through, so that thefirst bushing 152 and thesecond bushing 154 can be loaded into the drive housing from thecommunication port 11a 11 to make the assembly of thedrive device 10 more convenient; and the above structural design not only makes the assembly of thedrive device 10 simple and convenient, but also improves the assembly accuracy of thedrive device 10 and improves production efficiency.

(2)通过在转轴121上设置限位环1214，限位环1214的外径分别大于环本体1542的内径和第一轴套152的内径，以在轴本体1212的延伸方向上对转轴121限位，避免转轴121在转轴121的延伸方向上相对于驱动壳11发生大幅度移动；而通过设置第一导流槽152b和/或第二导流槽154b，能够有利于流体流通，降低限位环1214与第一轴套152或环本体1542抵接时对流体流通的影响。(2) By disposing the limitingring 1214 on therotating shaft 121 , the outer diameter of the limitingring 1214 is larger than the inner diameter of thering body 1542 and the inner diameter of thefirst sleeve 152 respectively, so as to limit therotating shaft 121 in the extending direction of theshaft body 1212 . position, to prevent therotating shaft 121 from moving significantly relative to thedrive housing 11 in the extending direction of therotating shaft 121; and by providing thefirst guide groove 152b and/or thesecond guide groove 154b, it can facilitate the flow of fluid and reduce the limit The effect on fluid flow when thering 1214 is in contact with thefirst bushing 152 or thering body 1542 .

(3)将第一轴套152的靠近环本体1542的一侧的孔径设置为大于第一轴套152的背离环本体1542的一侧的孔径，环本体1542的靠近第一轴套152的一侧的孔径大于环本体1542的背离第一轴套152的一侧的孔径，不仅可以使第一轴套152和环本体1542起到支撑转轴121的部分相隔尽可能远，以尽可能地降低转轴121的晃动幅度，而且还可以减少轴套组件15与转轴121之间的接触面积，减小摩擦，另外还有利于流体(例如清洗流体)的流动。(3) The hole diameter of the side of thefirst bushing 152 close to thering body 1542 is set to be larger than the hole diameter of the side of thefirst bushing 152 away from thering body 1542 . The hole diameter of the side is larger than the hole diameter of the side of thering body 1542 away from thefirst bushing 152, not only thefirst bushing 152 and thering body 1542 supporting therotating shaft 121 can be separated as far as possible, so as to reduce the rotating shaft as much as possible. 121, and can also reduce the contact area between theshaft sleeve assembly 15 and therotating shaft 121, reduce friction, and facilitate the flow of fluid (eg, cleaning fluid).

(4)将第二轴孔154a的直孔部154c在转轴121的延伸方向上的长度大于或等于0.5毫米，以更好地实现对转轴121的支撑。(4) The length of thestraight hole portion 154c of thesecond shaft hole 154a in the extending direction of therotating shaft 121 is greater than or equal to 0.5 mm, so as to better support therotating shaft 121.

(5)将驱动定子131与转轴121沿转轴121的轴线间隔设置，可使得驱动定子131沿垂直于转轴121轴向的横截面更大，驱动定子131产生的旋转磁场的磁通量更大，对第一磁体1222的扭矩也更大，从而减少了驱动定子131在带动转轴121旋转时所需的电流，可以确保血泵100功耗更低，发热量更少；通过进一步地设置动力定子132，而使驱动定子131和动力定子132能够共同带动转轴121绕转轴121的轴线旋转，从而带动叶轮30旋转，以给叶轮30的旋转提供更大的驱动力。(5) Disposing the drivingstator 131 and therotating shaft 121 at intervals along the axis of therotating shaft 121 can make the cross-section of the drivingstator 131 along the axis perpendicular to the axis of therotating shaft 121 larger, and the magnetic flux of the rotating magnetic field generated by the drivingstator 131 is larger. The torque of amagnet 1222 is also larger, thereby reducing the current required to drive thestator 131 to rotate therotating shaft 121, which can ensure lower power consumption and lower heat generation of theblood pump 100; The drivingstator 131 and thepower stator 132 can jointly drive therotating shaft 121 to rotate around the axis of therotating shaft 121 , thereby driving theimpeller 30 to rotate, so as to provide greater driving force for the rotation of theimpeller 30 .

需要说明的是，驱动装置10不限于为上述结构，在一些实施例中，驱动装置10具有两个飞轮，两个飞轮均设置在动力定子132和驱动定子131之间，两个飞轮均与转轴121固接，且沿转轴121的旋转轴线布置，第一磁体1222和第二磁体1223分别安装于两个飞轮上。It should be noted that the drivingdevice 10 is not limited to the above-mentioned structure. In some embodiments, the drivingdevice 10 has two flywheels, both of which are arranged between thepower stator 132 and the drivingstator 131 , and the two flywheels are connected to the rotating shaft. 121 is fixedly connected, and is arranged along the rotation axis of therotating shaft 121. Thefirst magnet 1222 and thesecond magnet 1223 are respectively installed on the two flywheels.

可以理解，此时，转子12也可以不具有飞轮；或者，飞轮为一个，该飞轮用于安装第一磁体1222和第二磁体1223中的一个。It can be understood that, at this time, therotor 12 may also not have a flywheel; alternatively, there is one flywheel, and the flywheel is used to install one of thefirst magnet 1222 and thesecond magnet 1223.

或者，动力定子132位于两个飞轮之间，即一个飞轮位于叶轮30和动力定子132之间，另一个飞轮位于动力定子132和驱动定子131之间，第一磁体1222 固定在动力定子132和驱动定子131之间的飞轮上，第二磁体1223固定在叶轮 30和动力定子132之间的飞轮上，即，第一磁体1222位于动力定子132和驱动定子131之间，第二磁体1223位于叶轮30和动力定子132之间。可以理解，此时，转子12也可以不具有飞轮。Alternatively, thepower stator 132 is located between two flywheels, that is, one flywheel is located between theimpeller 30 and thepower stator 132, and the other flywheel is located between thepower stator 132 and the drivingstator 131, and thefirst magnet 1222 is fixed between thepower stator 132 and the drivingstator 132. On the flywheel between thestators 131 , thesecond magnet 1223 is fixed on the flywheel between theimpeller 30 and thepower stator 132 , that is, thefirst magnet 1222 is located between thepower stator 132 and the drivingstator 131 , and thesecond magnet 1223 is located on theimpeller 30 and thepower stator 132. It can be understood that, at this time, therotor 12 may also not have a flywheel.

或者，在一些实施例中，转轴121也可以设置为穿设于驱动定子131，转轴121穿设于驱动定子131和动力定子132，此时，整个磁组件122可以设置在驱动定子131和动力定子132之间；或者，动力定子132位于第一磁体1222 和第二磁体1223之间，或者，驱动定子131和动力定子132均位于第一磁体 1222和第二磁体1223之间。可以理解，此时，转子12也可以不具有飞轮。Alternatively, in some embodiments, therotating shaft 121 may also be arranged to pass through the drivingstator 131, and therotating shaft 121 may be arranged to pass through the drivingstator 131 and thepower stator 132. In this case, the entiremagnetic assembly 122 may be arranged at the drivingstator 131 and thepower stator 132. 132 ; alternatively, thepower stator 132 is located between thefirst magnet 1222 and thesecond magnet 1223 , or both the drivingstator 131 and thepower stator 132 are located between thefirst magnet 1222 and thesecond magnet 1223 . It can be understood that, at this time, therotor 12 may also not have a flywheel.

或者，在一些实施例中，驱动装置10仅具有动力定子132和驱动定子131 中的一个。Alternatively, in some embodiments, thedrive device 10 has only one of thepower stator 132 and thedrive stator 131 .

以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application, and should be included in the application. within the scope of protection.