技术领域Technical Field
本实用新型属于医疗器械技术领域，涉及一种非接触磁力驱动器，特别涉及一种用于人工心脏血泵的体外驱动的非接触磁力驱动器。The utility model belongs to the technical field of medical equipment and relates to a non-contact magnetic driver, in particular to a non-contact magnetic driver used for extracorporeal driving of an artificial heart blood pump.
背景技术Background technique
心血管疾病的发病率成逐年上升趋势，其中，心力衰竭是一种严重威胁患者生命安全的疾病，目前心力衰竭的主要治疗手段为心脏移植或人工心脏辅助治疗。The incidence of cardiovascular diseases has been increasing year by year. Among them, heart failure is a disease that seriously threatens the life safety of patients. Currently, the main treatment for heart failure is heart transplantation or artificial heart-assisted therapy.
人工心脏经过数十年的研究，国内外均有产品上市。目前市场上的人工心脏产品基本上采用的都是有线驱动的方式，即通过一根电缆从腹壁进入身体连接到体内血泵，为血泵供电，支持血泵运行。由于驱动血泵转子的线圈置于体内，不可避免的导致血泵温升问题以及腹部经皮电缆感染等问题，同时由于体内驱动线圈的存在，也增加了植入体内的血泵体积大小。After decades of research, artificial hearts have been launched both domestically and internationally. Currently, artificial heart products on the market are basically driven by wires, that is, a cable is connected to the blood pump in the body through the abdominal wall to power the blood pump and support its operation. Since the coil that drives the rotor of the blood pump is placed in the body, it inevitably leads to problems such as temperature rise of the blood pump and infection of the abdominal percutaneous cable. At the same time, the presence of the driving coil in the body also increases the size of the implanted blood pump.
发明内容Summary of the invention
本实用新型的目的是针对现有技术中存在的上述问题，设计一种血泵体外非接触磁力驱动器，采用体外磁场的非接触式驱动作为血泵的驱动装置，从根本上克服了以往电驱动需要经皮导入通道和体内存在实现能量转换的发热部件等缺点。该方案只需将血泵植入体内，并且取消了体内血泵驱动线圈，减少植入体内的异物总量、大大降低植入装置的体积、并从根本上解决了由于体内血泵驱动线圈导致的温升问题以及经皮线缆引起的感染问题。The purpose of the utility model is to design an extracorporeal non-contact magnetic driver for a blood pump in view of the above-mentioned problems existing in the prior art, and to use an extracorporeal magnetic field non-contact drive as the driving device of the blood pump, which fundamentally overcomes the shortcomings of the previous electric drive requiring a percutaneous introduction channel and the presence of heating components in the body to achieve energy conversion. This solution only requires the blood pump to be implanted in the body, and the blood pump drive coil in the body is eliminated, thereby reducing the total amount of foreign matter implanted in the body, greatly reducing the volume of the implanted device, and fundamentally solving the temperature rise problem caused by the blood pump drive coil in the body and the infection problem caused by the percutaneous cable.
本实用新型的目的可通过下列技术方案来实现：一种非接触磁力驱动器，其特征在于，包括壳体以及设置于壳体内部的转子，所述的转子包括旋转轴、第一磁铁、硅钢片、线圈、第二磁铁，所述的旋转轴的两端架设于壳体内部并与壳体旋转连接，所述的第一磁铁与第二磁铁套设于旋转轴的外周部并与旋转轴固定连接，所述的第一磁铁与第二磁铁之间设置有第二套筒，所述的第二套筒套设于旋转轴的外周部并与旋转轴固定连接，所述的线圈套设于第二磁铁的外周部，所述的硅钢片套设于线圈的外部。The purpose of the utility model can be achieved through the following technical solutions: a non-contact magnetic drive, characterized in that it includes a shell and a rotor arranged inside the shell, the rotor includes a rotating shaft, a first magnet, a silicon steel sheet, a coil, and a second magnet, both ends of the rotating shaft are mounted inside the shell and are rotatably connected to the shell, the first magnet and the second magnet are sleeved on the outer periphery of the rotating shaft and are fixedly connected to the rotating shaft, a second sleeve is arranged between the first magnet and the second magnet, the second sleeve is sleeved on the outer periphery of the rotating shaft and is fixedly connected to the rotating shaft, the coil is sleeved on the outer periphery of the second magnet, and the silicon steel sheet is sleeved on the outside of the coil.
本实用新型的工作原理：永磁体的周围存在着磁场，由于磁场的存在，可以使磁力无接触地进行传递，表现为同性相斥异性相吸。利用磁场从体外驱动的人工心脏的无接触式动力传递系统的基本结构是两个相距一定距离的圆柱型磁体，磁体间的磁偶合力是能量传递的基础。由于第一磁铁、第二磁铁、第二套筒和旋转轴整体装配组成转子，可整体完成动平衡试验，从而保证转子动平衡精度，降低系统振动。The working principle of the utility model is as follows: there is a magnetic field around the permanent magnet. Due to the existence of the magnetic field, the magnetic force can be transmitted without contact, which is manifested as like poles repel each other and opposite poles attract each other. The basic structure of the contactless power transmission system of the artificial heart driven from outside the body by the magnetic field is two cylindrical magnets at a certain distance. The magnetic coupling force between the magnets is the basis of energy transmission. Since the first magnet, the second magnet, the second sleeve and the rotating shaft are assembled as a whole to form a rotor, the dynamic balance test can be completed as a whole, thereby ensuring the dynamic balance accuracy of the rotor and reducing the vibration of the system.
在上述的非接触磁力驱动器，所述的旋转轴的两端设置均设置有轴承，所述的转子通过轴承与壳体连接。In the above-mentioned non-contact magnetic drive, bearings are provided at both ends of the rotating shaft, and the rotor is connected to the housing through the bearings.
在上述的非接触磁力驱动器，所述的第一磁铁与轴承之间设置有第一套筒，所述的第二磁铁与轴承之间也设置有第一套筒，所述的第一套筒套设于旋转轴的外周部并与旋转轴固定连接。In the above-mentioned non-contact magnetic drive, a first sleeve is arranged between the first magnet and the bearing, and a first sleeve is also arranged between the second magnet and the bearing. The first sleeve is sleeved on the outer periphery of the rotating shaft and fixedly connected to the rotating shaft.
在上述的非接触磁力驱动器，所述的壳体包括外壳以及分别设置于外壳两端的第一端盖和第二端盖，所述的第一端盖和第二端盖均开设有供轴承卡入并固定的连接槽。In the above-mentioned non-contact magnetic drive, the housing comprises an outer shell and a first end cover and a second end cover respectively arranged at two ends of the outer shell, and the first end cover and the second end cover are both provided with a connecting groove for the bearing to be inserted and fixed.
在上述的非接触磁力驱动器，所述的壳体还包括第三端盖，所述的第三端盖位于第一端盖远离转子的一侧，所述的第一端盖与第三端盖扣合并形成腔室。In the above-mentioned non-contact magnetic drive, the housing further comprises a third end cover, the third end cover is located on a side of the first end cover away from the rotor, and the first end cover and the third end cover are buckled together to form a chamber.
在上述的非接触磁力驱动器，所述的第三端盖设置有卡接环，所述的卡接环的外周壁与第一端盖的内周壁抵接使得第三端盖与第一端盖相扣合。In the above-mentioned non-contact magnetic driver, the third end cover is provided with a snap ring, and the outer peripheral wall of the snap ring abuts against the inner peripheral wall of the first end cover so that the third end cover is buckled with the first end cover.
在上述的非接触磁力驱动器，所述的第一端盖和第二端盖均设置有连接环，所述的连接环的外周壁与外壳的内周壁抵接使得第一端盖、第二端盖均与外壳固定连接。In the above-mentioned non-contact magnetic drive, the first end cover and the second end cover are both provided with a connecting ring, and the outer peripheral wall of the connecting ring abuts against the inner peripheral wall of the shell so that the first end cover and the second end cover are both fixedly connected to the shell.
在上述的非接触磁力驱动器，所述的第二磁铁为汝铁硼磁铁。In the above-mentioned non-contact magnetic actuator, the second magnet is a neodymium iron boron magnet.
在上述的非接触磁力驱动器，所述的旋转轴为陶瓷轴。In the above-mentioned non-contact magnetic drive, the rotating shaft is a ceramic shaft.
在上述的非接触磁力驱动器，所述的轴承为陶瓷滚珠轴承或红宝石滑动轴承。In the above-mentioned non-contact magnetic drive, the bearing is a ceramic ball bearing or a ruby sliding bearing.
在上述的非接触磁力驱动器，所述的线圈为空心杯线圈。In the above-mentioned non-contact magnetic actuator, the coil is a hollow cup coil.
在上述的非接触磁力驱动器，所述的壳体为高强度非金属材料，所述的第一套筒和第二套筒为非金属材料。In the above-mentioned non-contact magnetic drive, the shell is made of high-strength non-metallic material, and the first sleeve and the second sleeve are made of non-metallic material.
与现有技术相比，本实用新型具有保证转子动平衡精度，降低系统振动、减少发热的优点。Compared with the prior art, the utility model has the advantages of ensuring the dynamic balance accuracy of the rotor, reducing system vibration and reducing heat generation.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本实用新型的结构示意图。Fig. 1 is a schematic structural diagram of the utility model.
图中，1、第一端盖；2、外壳；3、轴承；4、第一磁铁；5、旋转轴；6、硅钢片；7、线圈；8、第二磁铁；9、第二端盖；10、第一套筒；11、第三端盖；12、第二套筒；13、转子；14、壳体；15、连接环；16、卡接环。In the figure, 1, first end cover; 2, housing; 3, bearing; 4, first magnet; 5, rotating shaft; 6, silicon steel sheet; 7, coil; 8, second magnet; 9, second end cover; 10, first sleeve; 11, third end cover; 12, second sleeve; 13, rotor; 14, housing; 15, connecting ring; 16, clamping ring.
具体实施方式Detailed ways
以下是本实用新型的具体实施例并结合附图，对本实用新型的技术方案作进一步的描述，但本实用新型并不限于这些实施例。The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
如图1所示，本非接触磁力驱动器包括壳体14以及设置于壳体14内部的转子13，转子13包括旋转轴5、第一磁铁4、硅钢片6、线圈7、第二磁铁8，旋转轴5的两端架设于壳体14内部并与壳体14旋转连接，第一磁铁4与第二磁铁8套设于旋转轴5的外周部并与旋转轴5固定连接，第一磁铁4与第二磁铁8之间设置有第二套筒12，第二套筒12套设于旋转轴5的外周部并与旋转轴5固定连接，线圈7套设于第二磁铁8的外周部，硅钢片6套设于线圈7的外部。As shown in Figure 1, the non-contact magnetic drive includes a shell 14 and a rotor 13 arranged inside the shell 14. The rotor 13 includes a rotating shaft 5, a first magnet 4, a silicon steel sheet 6, a coil 7, and a second magnet 8. Both ends of the rotating shaft 5 are mounted inside the shell 14 and are rotatably connected to the shell 14. The first magnet 4 and the second magnet 8 are sleeved on the outer periphery of the rotating shaft 5 and are fixedly connected to the rotating shaft 5. A second sleeve 12 is arranged between the first magnet 4 and the second magnet 8. The second sleeve 12 is sleeved on the outer periphery of the rotating shaft 5 and is fixedly connected to the rotating shaft 5. The coil 7 is sleeved on the outer periphery of the second magnet 8, and the silicon steel sheet 6 is sleeved on the outside of the coil 7.
进一步细说，旋转轴5的两端设置均设置有轴承3，转子13通过轴承3与壳体14连接，转子13采用双轴承3支撑，有效降低系统振动和噪音情况。To elaborate further, bearings 3 are provided at both ends of the rotating shaft 5, and the rotor 13 is connected to the housing 14 through the bearings 3. The rotor 13 is supported by double bearings 3, which effectively reduces system vibration and noise.
进一步细说，第一磁铁4与轴承3之间设置有第一套筒10，第二磁铁8与轴承3之间也设置有第一套筒10，第一套筒10套设于旋转轴5的外周部并与旋转轴5固定连接。In further details, a first sleeve 10 is provided between the first magnet 4 and the bearing 3 , and a first sleeve 10 is also provided between the second magnet 8 and the bearing 3 . The first sleeve 10 is sleeved on the outer periphery of the rotating shaft 5 and fixedly connected to the rotating shaft 5 .
进一步细说，壳体14包括外壳2以及分别设置于外壳2两端的第一端盖1和第二端盖9，第一端盖1和第二端盖9均开设有供轴承3卡入并固定的连接槽。In further details, the housing 14 includes an outer shell 2 and a first end cover 1 and a second end cover 9 respectively disposed at two ends of the outer shell 2. The first end cover 1 and the second end cover 9 are both provided with a connecting groove for the bearing 3 to be inserted and fixed.
进一步细说，壳体14还包括第三端盖11，第三端盖11位于第一端盖1远离转子13的一侧，第一端盖1与第三端盖11扣合并形成腔室。In further detail, the housing 14 further includes a third end cover 11 , which is located at a side of the first end cover 1 away from the rotor 13 , and the first end cover 1 and the third end cover 11 are buckled together to form a chamber.
进一步细说，第三端盖11设置有卡接环16，卡接环16的外周壁与第一端盖1的内周壁抵接使得第三端盖11与第一端盖1相扣合。To further elaborate, the third end cover 11 is provided with a snap ring 16 , and the outer peripheral wall of the snap ring 16 abuts against the inner peripheral wall of the first end cover 1 so that the third end cover 11 is buckled with the first end cover 1 .
进一步细说，第一端盖1和第二端盖9均设置有连接环15，连接环15的外周壁与外壳2的内周壁抵接使得第一端盖1、第二端盖9均与外壳2固定连接。To further elaborate, the first end cover 1 and the second end cover 9 are both provided with a connecting ring 15 , and the outer peripheral wall of the connecting ring 15 abuts against the inner peripheral wall of the outer shell 2 so that the first end cover 1 and the second end cover 9 are both fixedly connected to the outer shell 2 .
进一步细说，第二磁铁8为汝铁硼磁铁，例如N52磁铁，具有磁场强度大、增加驱动距离和驱动稳定性的优点。To further elaborate, the second magnet 8 is a neodymium iron boron magnet, such as an N52 magnet, which has the advantages of high magnetic field strength, increased driving distance and driving stability.
进一步细说，旋转轴5为陶瓷轴。To be more specific, the rotating shaft 5 is a ceramic shaft.
进一步细说，轴承3为陶瓷滚珠轴承或红宝石滑动轴承。To be more specific, the bearing 3 is a ceramic ball bearing or a ruby sliding bearing.
进一步细说，线圈7为空心杯线圈7，具有无齿槽效应、电枢电感小、绕组散热条件好的优点，空心杯线圈7绕组配合硅钢片6驱动器定子具有功率密度高、体积小、效率高的优点。To elaborate further, the coil 7 is a hollow cup coil 7, which has the advantages of no cogging effect, small armature inductance, and good winding heat dissipation conditions. The hollow cup coil 7 winding combined with the silicon steel sheet 6 driver stator has the advantages of high power density, small size, and high efficiency.
进一步细说，壳体14为高强度非金属材料，第一套筒10和第二套筒12为非金属材料，非金属材料为碳纤维或赛钢，具有降低产生涡流效应、减少温升的优点。To further elaborate, the shell 14 is made of high-strength non-metallic material, and the first sleeve 10 and the second sleeve 12 are made of non-metallic material. The non-metallic material is carbon fiber or sintered steel, which has the advantages of reducing the eddy current effect and reducing the temperature rise.
本文中所描述的具体实施例仅仅是对本实用新型精神作举例说明。本实用新型所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本实用新型的精神或者超越所附权利要求书所定义的范围。The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
尽管本文较多地使用了大量术语，但并不排除使用其它术语的可能性。使用这些术语仅仅是为了更方便地描述和解释本实用新型的本质；把它们解释成任何一种附加的限制都是与本实用新型精神相违背的。Although a large number of terms are used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322019868.3UCN220778839U (en) | 2023-07-28 | 2023-07-28 | Non-contact magnetic driver |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322019868.3UCN220778839U (en) | 2023-07-28 | 2023-07-28 | Non-contact magnetic driver |
| Publication Number | Publication Date |
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| CN220778839Utrue CN220778839U (en) | 2024-04-16 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322019868.3UActiveCN220778839U (en) | 2023-07-28 | 2023-07-28 | Non-contact magnetic driver |
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| CN (1) | CN220778839U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12311170B2 (en) | 2020-05-04 | 2025-05-27 | Btl Healthcare Technologies A.S. | Device and method for unattended treatment of a patient |
| US12427307B2 (en) | 2020-05-04 | 2025-09-30 | Btl Healthcare Technologies A.S. | Device and method for unattended treatment of a patient |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12311170B2 (en) | 2020-05-04 | 2025-05-27 | Btl Healthcare Technologies A.S. | Device and method for unattended treatment of a patient |
| US12427307B2 (en) | 2020-05-04 | 2025-09-30 | Btl Healthcare Technologies A.S. | Device and method for unattended treatment of a patient |
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