技术领域Technical field
本发明涉及人工心脏泵技术领域，尤其涉及一种磁悬浮人工心脏泵。The present invention relates to the technical field of artificial heart pumps, and in particular to a magnetic levitation artificial heart pump.
背景技术Background technique
心脏泵血过程其实也是血液循环的过程，左心室收缩之后会把血液泵入到升主动脉，血液通过升主动脉流到全身各处的大动脉，进入到组织器官内的小动脉，在组织器官内会有动脉静脉网，这时候动脉静脉的血液会进行交换，之后通过静脉回流，在盆腔、腹腔、下肢等器官的静脉最终会汇入到下腔静脉，头面部、胸部、上肢的静脉血液会流到上腔静脉，上腔静脉和下腔静脉最终都会回流到右心房，右心房的血液通过三尖瓣会进入到右心室，右心室通过收缩之后会把血液泵入到肺动脉，肺动脉里的血液其实是静脉血，它在肺脏内经过氧气，呼吸吸入氧气后进行氧气和二氧化碳的交换，静脉血就变成动脉血，通过肺静脉流入到左心房，左心房通过二尖瓣进入左心室，就形成一个心脏泵血的过程，其实也就是血液循环的过程；The process of heart pumping is actually a process of blood circulation. After the left ventricle contracts, it pumps blood into the ascending aorta. The blood flows through the ascending aorta to the large arteries throughout the body, and enters the small arteries in the tissues and organs. There is an arterial and venous network in the body. At this time, the blood in the arteries and veins will exchange, and then return through the veins. The veins in the pelvic cavity, abdominal cavity, lower limbs and other organs will eventually merge into the inferior vena cava, and the venous blood in the head, face, chest, and upper limbs will It will flow to the superior vena cava. The superior vena cava and inferior vena cava will eventually return to the right atrium. The blood from the right atrium will enter the right ventricle through the tricuspid valve. After the right ventricle contracts, it will pump the blood into the pulmonary artery and the pulmonary artery. The blood in the lungs is actually venous blood. It passes through oxygen in the lungs. After breathing in oxygen, oxygen and carbon dioxide are exchanged. The venous blood becomes arterial blood and flows into the left atrium through the pulmonary veins. The left atrium enters the left ventricle through the mitral valve. It forms a process of heart pumping, which is actually the process of blood circulation;
然而，传统心脏泵运行过程中产生机械摩擦，这使得血液温度会非正常升高，沿着会造成溶血、血栓等疾病，此外，心脏泵设计小巧，这使得心脏泵叶轮需要保持较高的转速才能有效泵血，过高的转速容易引起心脏泵结构的不稳定，运行稳定低，为此本发明提供一种磁悬浮人工心脏泵用以解决上述问题。However, the traditional heart pump generates mechanical friction during operation, which causes the blood temperature to rise abnormally, causing hemolysis, thrombosis and other diseases. In addition, the heart pump is compact in design, which requires the heart pump impeller to maintain a high speed. In order to effectively pump blood, excessively high rotational speed can easily cause instability of the heart pump structure and low operating stability. Therefore, the present invention provides a magnetic levitation artificial heart pump to solve the above problems.
发明内容Contents of the invention
本发明提供一种磁悬浮人工心脏泵，解决了传统心脏泵运行过程中产生机械摩擦，这使得血液温度会非正常升高，沿着会造成溶血、血栓等疾病，此外，心脏泵设计小巧，这使得心脏泵叶轮需要保持较高的转速才能有效泵血，过高的转速容易引起心脏泵结构的不稳定，运行稳定低的技术问题。The present invention provides a magnetic levitation artificial heart pump, which solves the problem of mechanical friction generated during the operation of a traditional heart pump, which causes the blood temperature to rise abnormally, causing hemolysis, thrombosis and other diseases. In addition, the heart pump is compact in design, which The heart pump impeller needs to maintain a high speed to effectively pump blood. Excessively high speed can easily cause structural instability of the heart pump and technical problems such as low operational stability.
为解决上述技术问题，本发明提供的一种磁悬浮人工心脏泵，包括泵壳，所述泵壳内悬浮设置有中心转子，所述中心转子上顺次设置有转矩转子、轴流叶轮和悬浮转子，所述悬浮转子的外侧固定连接有离心叶轮，所述泵壳的一端至另一端渐变窄设置，使得所述泵壳内依次形成有离心腔体、渐变腔体和转子腔体，且所述悬浮转子、轴流叶轮、转矩转子被分别设置在离心腔体、渐变腔体和转子腔体内部。In order to solve the above technical problems, the present invention provides a magnetic levitation artificial heart pump, which includes a pump casing, a central rotor is suspended in the pump casing, and a torque rotor, an axial flow impeller and a suspension are sequentially provided on the central rotor. A rotor, a centrifugal impeller is fixedly connected to the outside of the suspended rotor, and the pump casing is gradually narrowed from one end to the other end, so that a centrifugal cavity, a gradient cavity and a rotor cavity are sequentially formed in the pump casing, and the The suspension rotor, axial flow impeller, and torque rotor are respectively arranged inside the centrifugal cavity, the gradient cavity, and the rotor cavity.
优选的，所述离心腔体呈扁圆柱型结构设计，且所述离心腔体内壁固定嵌设有两组外永磁体，两组所述外永磁体对称设置，所述悬浮转子内对应两组外永磁体固定连接有两组内永磁体。Preferably, the centrifugal cavity is designed as a flat cylindrical structure, and two groups of external permanent magnets are fixedly embedded in the inner wall of the centrifugal cavity. The two groups of external permanent magnets are symmetrically arranged, and the two groups correspond to each other in the suspended rotor. The outer permanent magnet is fixedly connected to two sets of inner permanent magnets.
优选的，所述外永磁体与内永磁体均围绕离心腔体轴心等距倾斜设置，且相对所述内永磁体、外永磁体的同名磁极相对设置。Preferably, the outer permanent magnet and the inner permanent magnet are both equidistantly arranged around the axis of the centrifugal cavity, and are arranged opposite to the same-named magnetic poles of the inner permanent magnet and the outer permanent magnet.
优选的，所述渐变腔体内且位于中心转子的外侧固定套设有多个轴流叶轮，且多个所述轴流叶轮的尺寸渐变设计。Preferably, a plurality of axial flow impellers are fixedly sleeved in the gradual change cavity and located outside the central rotor, and the sizes of the plurality of axial flow impellers are gradually designed.
优选的，所述转子腔体内壁固定连接有多个转矩绕组，所述转矩转子内对应转矩绕组固定连接有转矩铁芯，且所述转矩绕组、转矩转子之间形成有环状间隙。Preferably, a plurality of torque windings are fixedly connected to the inner wall of the rotor cavity, a torque core is fixedly connected to the corresponding torque windings in the torque rotor, and a torque core is formed between the torque windings and the torque rotor. annular gap.
优选的，所述离心腔体的一侧外壁固定连接有血液输出管，且所述血液输出管的输入口与离心腔体内壁相切设置。Preferably, a blood output tube is fixedly connected to one side of the outer wall of the centrifuge chamber, and the input port of the blood output tube is arranged tangent to the inner wall of the centrifuge chamber.
优选的，所述转子腔体的一侧中部固定连接有血液输入管，所述血液输入管与中心转子位于同一直线上。Preferably, a blood input tube is fixedly connected to the middle part of one side of the rotor cavity, and the blood input tube is located on the same straight line as the central rotor.
与相关技术相比较，本发明提供的一种磁悬浮人工心脏泵具有如下有益效果：本发明一种磁悬浮人工心脏泵，通过外永磁体、内永磁体、转矩绕组、转矩铁芯的设置，可使得中心转子保持悬浮状态，能够避免机械摩擦导致的温度升高和溶血、血栓等问题，且不影响转矩绕组通电带动中心转子运行，通过泵壳、轴流叶轮、离心叶轮的设置，使得血液经两次加压后从血液输出管喷出，可在保持低转速的情况下，仍然能够保证泵送压力，提高了磁悬浮人工心脏泵的稳定性。Compared with related technologies, the magnetic levitation artificial heart pump provided by the present invention has the following beneficial effects: The magnetic levitation artificial heart pump of the present invention, through the arrangement of outer permanent magnets, inner permanent magnets, torque windings, and torque iron cores, It can keep the central rotor in a suspended state, which can avoid temperature rise and hemolysis, thrombosis and other problems caused by mechanical friction, and does not affect the torque winding energization to drive the central rotor to operate. Through the settings of the pump casing, axial flow impeller and centrifugal impeller, The blood is sprayed out from the blood output tube after being pressurized twice. The pumping pressure can still be maintained while maintaining a low speed, which improves the stability of the magnetic levitation artificial heart pump.
附图说明Description of the drawings
图1为本发明一种磁悬浮人工心脏泵的立体图；Figure 1 is a perspective view of a magnetic levitation artificial heart pump according to the present invention;
图2为本发明一种磁悬浮人工心脏泵的侧面剖视图；Figure 2 is a side cross-sectional view of a magnetic levitation artificial heart pump according to the present invention;
图3为本发明一种磁悬浮人工心脏泵附图2中沿A-A方向的结构剖视图；Figure 3 is a structural cross-sectional view along the A-A direction in Figure 2 of a magnetic levitation artificial heart pump of the present invention;
图4为本发明一种磁悬浮人工心脏泵附图2中沿B-B方向的结构剖视图。Figure 4 is a structural cross-sectional view along the B-B direction in Figure 2 of a magnetic levitation artificial heart pump according to the present invention.
图中标号：1、泵壳；101、离心腔体；102、渐变腔体；103、转子腔体；2、中心转子；3、转矩转子；301、转矩绕组；302、转矩铁芯；4、轴流叶轮；5、悬浮转子；501、外永磁体；502、内永磁体；6、离心叶轮；7、血液输出管；8、血液输入管。Numbers in the figure: 1. Pump casing; 101. Centrifugal cavity; 102. Gradient cavity; 103. Rotor cavity; 2. Center rotor; 3. Torque rotor; 301. Torque winding; 302. Torque core ; 4. Axial flow impeller; 5. Suspended rotor; 501. External permanent magnet; 502. Internal permanent magnet; 6. Centrifugal impeller; 7. Blood output tube; 8. Blood input tube.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例；基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them; based on The embodiments of the present invention and all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
实施例，由图1-4给出，本发明一种磁悬浮人工心脏泵，包括泵壳1，所述泵壳1内悬浮设置有中心转子2，所述中心转子2上顺次设置有转矩转子3、轴流叶轮4和悬浮转子5，所述悬浮转子5的外侧固定连接有离心叶轮6，所述泵壳1的一端至另一端渐变窄设置，使得所述泵壳1内依次形成有离心腔体101、渐变腔体102和转子腔体103，且所述悬浮转子5、轴流叶轮4、转矩转子3被分别设置在离心腔体101、渐变腔体102和转子腔体103内部，血液经两次加压后从血液输出管7喷出，可在保持低转速的情况下，仍然能够保证泵送压力，提高了磁悬浮人工心脏泵的稳定性。The embodiment is shown in Figures 1-4. A magnetic levitation artificial heart pump of the present invention includes a pump casing 1. A center rotor 2 is suspended in the pump casing 1, and a torque is sequentially provided on the center rotor 2. The rotor 3, the axial flow impeller 4 and the suspended rotor 5. The centrifugal impeller 6 is fixedly connected to the outside of the suspended rotor 5. The pump casing 1 is gradually narrowed from one end to the other end, so that the pump casing 1 is sequentially formed with The centrifugal cavity 101, the gradual change cavity 102 and the rotor cavity 103, and the suspension rotor 5, the axial flow impeller 4 and the torque rotor 3 are respectively arranged inside the centrifugal cavity 101, the gradual change cavity 102 and the rotor cavity 103. , the blood is sprayed out from the blood output tube 7 after being pressurized twice, and the pumping pressure can still be guaranteed while maintaining a low rotational speed, which improves the stability of the magnetic levitation artificial heart pump.
其中，所述离心腔体101呈扁圆柱型结构设计，且所述离心腔体101内壁固定嵌设有两组外永磁体501，两组所述外永磁体501对称设置，所述悬浮转子5内对应两组外永磁体501固定连接有两组内永磁体502，中心转子2保持悬浮状态，转矩转子3、轴流叶轮4和悬浮转子5均与泵壳1无接触，能够避免机械摩擦导致的温度升高和溶血、血栓等问题。Among them, the centrifugal cavity 101 is designed as an oblate cylindrical structure, and two sets of outer permanent magnets 501 are fixedly embedded in the inner wall of the centrifugal cavity 101. The two sets of outer permanent magnets 501 are symmetrically arranged, and the suspended rotor 5 There are two sets of inner permanent magnets 502 fixedly connected to the two sets of outer permanent magnets 501. The central rotor 2 remains in a suspended state. The torque rotor 3, the axial flow impeller 4 and the suspended rotor 5 have no contact with the pump shell 1, which can avoid mechanical friction. Resulting in temperature rise and problems such as hemolysis and thrombosis.
其中，所述外永磁体501与内永磁体502均围绕离心腔体101轴心等距倾斜设置，且相对所述内永磁体502、外永磁体501的同名磁极相对设置，相邻的外永磁体501形成“八”字形结构，使得内永磁体502在磁场斥力的作用在能够自动居中，实现磁悬浮。Wherein, the outer permanent magnet 501 and the inner permanent magnet 502 are both equidistantly arranged around the axis of the centrifugal cavity 101, and are arranged opposite to the magnetic poles of the same name of the inner permanent magnet 502 and the outer permanent magnet 501. The adjacent outer permanent magnets are arranged oppositely. The magnet 501 forms an "eight"-shaped structure, so that the inner permanent magnet 502 can automatically center under the repulsive force of the magnetic field to achieve magnetic levitation.
其中，所述渐变腔体102内且位于中心转子2的外侧固定套设有多个轴流叶轮4，且多个所述轴流叶轮4的尺寸渐变设计，多个轴流叶轮4可同步增压血液，使得血液压强快速升高，提高了泵送动力。Among them, a plurality of axial flow impellers 4 are fixedly mounted in the gradient cavity 102 and located outside the central rotor 2, and the sizes of the plurality of axial flow impellers 4 are gradually designed, and the multiple axial flow impellers 4 can be increased simultaneously. Pressure the blood, causing the blood pressure to rise rapidly and improving the pumping power.
其中，所述转子腔体103内壁固定连接有多个转矩绕组301，所述转矩转子3内对应转矩绕组301固定连接有转矩铁芯302，且所述转矩绕组301、转矩转子3之间形成有环状间隙，转矩绕组301间歇性通电，使得转矩铁芯302在磁力作用下旋转，可带动中心转子2转动，可实现电驱动控制。Among them, a plurality of torque windings 301 are fixedly connected to the inner wall of the rotor cavity 103, and a torque core 302 is fixedly connected to the corresponding torque windings 301 in the torque rotor 3, and the torque windings 301, torque An annular gap is formed between the rotors 3, and the torque winding 301 is intermittently energized, causing the torque core 302 to rotate under the action of magnetic force, which can drive the center rotor 2 to rotate, thereby realizing electric drive control.
其中，所述离心腔体101的一侧外壁固定连接有血液输出管7，且所述血液输出管7的输入口与离心腔体101内壁相切设置，血液在离心力的作用下将会被加压甩出，顺向设置的血液输出管7减少了输出阻力。Among them, a blood output tube 7 is fixedly connected to one side of the outer wall of the centrifugal cavity 101, and the input port of the blood output tube 7 is tangent to the inner wall of the centrifugal cavity 101. The blood will be added under the action of centrifugal force. Pressure is thrown out, and the blood output tube 7 arranged in the forward direction reduces the output resistance.
其中，所述转子腔体103的一侧中部固定连接有血液输入管8，所述血液输入管8与中心转子2位于同一直线上，使得血液能够沿中心转子2与转子腔体103内壁之间的间隙流通，且中心转子2与转子腔体103无摩擦，可防止血液升温。Among them, a blood input tube 8 is fixedly connected to the middle part of one side of the rotor cavity 103. The blood input tube 8 is located on the same straight line as the central rotor 2, so that the blood can flow along the space between the central rotor 2 and the inner wall of the rotor cavity 103. The gap circulates, and there is no friction between the central rotor 2 and the rotor cavity 103, which can prevent the blood from heating up.
工作原理：在使用时，在初始状态下，泵壳1的内部抽真空，接通血液输入管8后，血液充满泵壳1，在外永磁体501、内永磁体502的磁力作用下，中心转子2保持悬浮状态，转矩转子3、轴流叶轮4和悬浮转子5均与泵壳1无接触，能够避免机械摩擦导致的温度升高和溶血、血栓等问题，运行时，转矩绕组301间歇性通电，使得转矩铁芯302在磁力作用下旋转，可带动中心转子2转动，轴流叶轮4转动挤压后侧血液进入离心腔体101，使得血液初次加压，离心叶轮6转动，推挤进入离心腔体101的血液从血液输出管7喷出，使得血液再次加压，可在保持低转速的情况下，仍然能够保证泵送压力。Working principle: During use, in the initial state, the inside of the pump housing 1 is evacuated. After the blood input tube 8 is connected, the blood fills the pump housing 1. Under the magnetic force of the outer permanent magnet 501 and the inner permanent magnet 502, the center rotor 2 maintain the suspended state. The torque rotor 3, axial flow impeller 4 and floating rotor 5 have no contact with the pump shell 1, which can avoid temperature rise and hemolysis, thrombus and other problems caused by mechanical friction. During operation, the torque winding 301 is intermittent When the power is energized, the torque core 302 rotates under the action of magnetic force, which can drive the center rotor 2 to rotate. The axial flow impeller 4 rotates and squeezes the rear blood into the centrifugal cavity 101, causing the blood to be pressurized for the first time. The centrifugal impeller 6 rotates and pushes the The blood squeezed into the centrifugal chamber 101 is ejected from the blood output tube 7, causing the blood to be pressurized again, and the pumping pressure can still be guaranteed while maintaining a low rotational speed.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310854555.1ACN116899098A (en) | 2023-07-13 | 2023-07-13 | A magnetic levitation artificial heart pump |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310854555.1ACN116899098A (en) | 2023-07-13 | 2023-07-13 | A magnetic levitation artificial heart pump |
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| CN116899098Atrue CN116899098A (en) | 2023-10-20 |
| Application Number | Title | Priority Date | Filing Date |
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| CN202310854555.1APendingCN116899098A (en) | 2023-07-13 | 2023-07-13 | A magnetic levitation artificial heart pump |
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| CN (1) | CN116899098A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209033309U (en)* | 2017-08-24 | 2019-06-28 | 清华大学 | Suspension Rotor Blood Pumps and Pumping Systems |
| CN112121249A (en)* | 2020-10-21 | 2020-12-25 | 山东大学 | In-vitro centrifugal magnetic suspension artificial heart pump and use method |
| CN112206409A (en)* | 2020-11-10 | 2021-01-12 | 山东大学 | A magnetic levitation mixed-flow heart pump |
| CN214260372U (en)* | 2020-11-18 | 2021-09-24 | 山东科技大学 | Centrifugal magnetic suspension artificial heart pump |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209033309U (en)* | 2017-08-24 | 2019-06-28 | 清华大学 | Suspension Rotor Blood Pumps and Pumping Systems |
| CN112121249A (en)* | 2020-10-21 | 2020-12-25 | 山东大学 | In-vitro centrifugal magnetic suspension artificial heart pump and use method |
| CN112206409A (en)* | 2020-11-10 | 2021-01-12 | 山东大学 | A magnetic levitation mixed-flow heart pump |
| CN214260372U (en)* | 2020-11-18 | 2021-09-24 | 山东科技大学 | Centrifugal magnetic suspension artificial heart pump |
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