CN105268040A - Centrifugal blood pump driven by magnetic coupling - Google Patents
Centrifugal blood pump driven by magnetic coupling Download PDFInfo
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- CN105268040A CN105268040A CN201410350944.1A CN201410350944A CN105268040A CN 105268040 A CN105268040 A CN 105268040A CN 201410350944 A CN201410350944 A CN 201410350944A CN 105268040 A CN105268040 A CN 105268040A
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Abstract
The invention discloses a centrifugal blood pump driven by magnetic coupling, which is mainly used at occasions requiring in-vitro blood circulation such as in-vitro circulation assistance in a cardiac surgery and in-vitro membrane oxygenation. The centrifugal blood pump driven by the magnetic coupling is constituted of a centrifugal pump upper cover, a rotor, an internal drive magnet and a centrifugal pump lower cover. The centrifugal pump adopts a magnetic coupling drive manner to separate the centrifugal pump from driving, so that whole sealing of a blood circulation loop is realized, blood pollution is reduced, and disassembly and replacement become convenient. Streamlined design is adopted to rotor blades of the centrifugal blood pump and satisfies fluid dynamics requirements in the blood pump, so that blood can be flown out from a pump body stably and thrombosis is reduced. The centrifugal pump rotor is connected to the centrifugal pump lower cover through single-point spherical supporting, so that contact friction is reduced, and damages caused by friction-based heat generation to the blood are reduced.
Description
Technical field
The present invention relates to centrifugal blood pump technical field, be specifically related to the centrifugal blood pump that a kind of magnetic coupling drives, this blood pump can make driving be separated with rotor, and blood is flowed within the closed loop, is extracorporeal blood circulating device core component.Be mainly used in extracorporeal circulation in operation on heart to assist and ECMO etc. needs to carry out the occasion of extracorporeal circulation of blood.
Background technology
Blood pump is mainly used in the occasion that external assist circulation ECMO etc. needs to carry out extracorporeal circulation of blood, be replace human heart to beat and a sanguimotor key technology, the treatment of serious symptom first aid and cardiovascular disease and development are had great importance.
At present, blood pump conventional is in the world broadly divided into centrifugal blood pump and roller pump, roller pump adopts the mode of mechanical presses that blood is extruded pipeline, form blood circulation power, after blood is subject to mechanical presses, the easy breakage of erythrocyte causes haemolysis, thus forms larger blood damage, therefore can only use at short notice.Centrifugal blood pump can export blood continuously, and form blood circulation power by the effect of centrifugal force, blood damage is little, can be applicable to long-time use.But in existing centrifugal blood pump, the rotor of centrifugal blood pump and motor drive and need connecting axle, thus cause blood circulator circuit not seal completely, easily cause blood contamination, be also not easy to change centrifugal blood pump consumptive material.Mostly the rotor blade of existing centrifugal pump is linear type simultaneously, easily causes turbulent blood flow, and form thrombosis, therefore effect is not good.
Summary of the invention
Have damage in order to overcome current roller pump to blood, centrifugal blood pump can not form closed blood loop, easily cause the problem such as blood contamination and easy formation thrombosis, the invention provides the centrifugal blood pump that a kind of novel magnetic coupling drives.This blood pump can use for a long time, without blood damage, and without blood contamination.
For achieving the above object, technical scheme of the present invention is as follows:
The centrifugal blood pump that magnetic coupling drives, this blood pump comprises centrifugal pump upper cover, rotor, internal drive Magnet and centrifugal pump lower cover; Wherein: described centrifugal pump upper cover and centrifugal pump lower cover form the pump case with inner chamber, arrange described rotor in the inner chamber of described pump case, and described internal drive Magnet is installed on described rotor by the draw-in groove offered on rotor.Described internal drive Magnet is ndfeb magnet.
Described centrifugal pump is covered with blood entry port and blood outlet, the upper end of centrifugal pump upper cover is designed to taper, and be convenient to blood and flow in centrifugal blood pump, blood entry port is located at the center of taper upper end; The medial surface of centrifugal pump upper cover is offered helical form and is led blood groove, flows to blood outlet for guide blood.
The rotor of described centrifugal blood pump comprises four streamline vanes, and blade design is streamlinedly make blood smooth flow in centrifugal blood pump, reduces blood damage and thrombosis; The centre position of described rotor is provided with spherical supporter, for contacting with centrifugal pump lower cover.
The rotor outward flange of described centrifugal blood pump is evenly arranged six draw-in grooves, in draw-in groove, internal drive Magnet is installed.
Described its inner surface of centrifugal pump lower cover establishes bossed platform, and the center of platform is provided with bulbous recess, and bulbous recess matches with described spherical supporter, forms point cantact supporting way.
When described centrifugal blood pump uses, rotarily drive internal drive Magnet by the external magnets outside pump to rotate, thus provide power for rotor, and rotor rotates the centrifugal force produced and provides power for blood flows out, thus ensures the blood flow that meets needed for blood circulation of human body and required blood pressure.
Compared with prior art, beneficial effect of the present invention is embodied in:
1, centrifugal blood pump of the present invention drives and is separated with pump head, and blood circulates in loop, without blood contamination, also dismounting and change can be carried out easily, blood pump blade adopts airflow design simultaneously, blood is steadily flowed out in blood pump, greatly reduces thrombosis.
2, the rotor outer periphery of centrifugal blood pump of the present invention embeds six blocks of Magnet, is coupled to form magnetic coupling and drive with blood pump external drive Magnet, centrifugal pump is separated with external drive, realizes the totally-enclosed of blood circulator circuit, reduces blood contamination, replacing for convenience detach.
3, centrifugal blood pump rotor blade of the present invention adopts airflow design, meets fluid dynamic requirements in blood pump, blood can be made steadily to flow out the pump housing, reduces thrombosis.
4, the mode that centrifugal blood pump rotor of the present invention adopts single-point ball to support is connected with centrifugal pump lower cover, decreases contact friction, causes damage after avoiding frictional heat to blood.
Accompanying drawing explanation
Fig. 1 is centrifugal blood pump structural representation of the present invention.
Fig. 2 is centrifugal pump superstructure schematic diagram.
Fig. 3 is centrifugal pump rotor structural representation; Wherein: (a) and (b) is respectively different directions view.
Fig. 4 is centrifugal pump lower cover structure schematic diagram.
In figure: 1-centrifugal pump upper cover; 11-blood entry port; 12-blood exports; 13-helical form leads blood groove; 14-upper end; 2-centrifugal pump lower cover; 21-platform; 22-bulbous recess; 3-rotor; 31-blade; The spherical supporter of 32-; 33-draw-in groove; 4-internal drive Magnet.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, technical scheme of the present invention is described further.
Of the present invention being to provide at present a kind ofly can to use, for a long time without the New Magnetic Field Controlled couple drive centrifugal blood pump of blood damage and blood contamination.As shown in Figure 1, this centrifugal blood pump comprises centrifugal pump upper cover 1, rotor 3, internal drive Magnet 4 and centrifugal pump lower cover 2; Wherein: described centrifugal pump upper cover 1 and centrifugal pump lower cover 2 match to be formed and have the pump case of inner chamber, rotor 3 is set in the inner chamber of pump case, described internal drive Magnet 4 is installed on described rotor 4 by the draw-in groove offered on rotor 3, and internal drive Magnet 4 is ndfeb magnet.
Described centrifugal pump upper cover 1 is provided with blood entry port 11 and blood outlet 12, and the upper end 14 of centrifugal pump upper cover 1 is designed to taper, and be convenient to blood and flow in centrifugal blood pump, blood entry port 11 is located at the center of taper upper end 14; The medial surface of centrifugal pump upper cover 1 is offered helical form and is led blood groove 13, and flow to blood outlet 12 for guide blood, structure chart as shown in Figure 2.
As shown in Figure 3, it comprises four streamline vanes 31 to rotor 3 structure chart of described centrifugal blood pump, and blade 31 is designed to streamlinedly make blood smooth flow in centrifugal blood pump, reduces blood damage and thrombosis; The centre position of described rotor 3 is provided with spherical supporter 32, for contacting with centrifugal pump lower cover 2.
Rotor 3 outward flange of described centrifugal blood pump evenly arranges six draw-in grooves 33, in draw-in groove 33, internal drive Magnet 4 is installed.
Described centrifugal pump lower cover 2 structure chart as shown in Figure 4, centrifugal pump lower cover 2 mainly rises and supports and closure function, its inner surface establishes bossed platform 21, the center of platform 21 is provided with bulbous recess 22, bulbous recess 22 matches with described spherical supporter 32, form point cantact supporting way, thus realize the support fixation to centrifugal pump rotor.And the point cantact supporting way that bulbous recess 22 and spherical supporter 32 are formed, greatly reduce contact and support area, reduce the generation of contact friction and frictional heat.
When centrifugal blood pump of the present invention uses, internal drive Magnet 4 can be coupled with external magnets, when the external magnets outside pump rotarily drive internal drive Magnet 4 rotate time, for rotor 3 provides power, form contactless magnetic coupling to drive, and rotor 3 rotates the centrifugal force produced and provides power for blood flows out, thus ensure the blood flow that meets needed for blood circulation of human body and required blood pressure.
Claims (7)
1. a centrifugal blood pump for magnetic coupling driving, is characterized in that: this blood pump comprises centrifugal pump upper cover, rotor, internal drive Magnet and centrifugal pump lower cover; Wherein: described centrifugal pump upper cover and centrifugal pump lower cover form the pump case with inner chamber, arrange described rotor in the inner chamber of described pump case, and described internal drive Magnet is installed on described rotor by the draw-in groove offered on rotor.
2. the centrifugal blood pump of magnetic coupling driving according to claim 1, is characterized in that: described internal drive Magnet is ndfeb magnet.
3. the centrifugal blood pump of magnetic coupling driving according to claim 1, it is characterized in that: described centrifugal pump is covered with blood entry port and blood outlet, the upper end of centrifugal pump upper cover is designed to taper, be convenient to blood flow in centrifugal blood pump, blood entry port is located at the center of taper upper end; The medial surface of centrifugal pump upper cover is offered helical form and is led blood groove, flows to blood outlet for guide blood.
4. the centrifugal blood pump of magnetic coupling driving according to claim 1, it is characterized in that: the rotor of described centrifugal blood pump comprises four streamline vanes, the centre position of described rotor is provided with spherical supporter, is contacted with centrifugal pump lower cover by spherical supporter.
5. the centrifugal blood pump of magnetic coupling driving according to claim 1, is characterized in that: the rotor outward flange of described centrifugal blood pump is evenly arranged six draw-in grooves, install internal drive Magnet respectively in draw-in groove.
6. the centrifugal blood pump of magnetic coupling driving according to claim 1, it is characterized in that: described its inner surface of centrifugal pump lower cover establishes bossed platform, the center of platform is provided with bulbous recess, and bulbous recess matches with described spherical supporter, forms point cantact supporting way.
7. the centrifugal blood pump of magnetic coupling driving according to claim 1, it is characterized in that: when described centrifugal blood pump uses, rotarily drive internal drive Magnet by the external magnets outside pump to rotate, thus provide power for rotor, and rotor rotates the centrifugal force produced and provides power for blood flows out, thus ensure the blood flow that meets needed for blood circulation of human body and required blood pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350944.1A CN105268040B (en) | 2014-07-22 | 2014-07-22 | A kind of centrifugal blood pump of magnetic coupling driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350944.1A CN105268040B (en) | 2014-07-22 | 2014-07-22 | A kind of centrifugal blood pump of magnetic coupling driving |
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| Publication Number | Publication Date |
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| CN105268040A true CN105268040A (en) | 2016-01-27 |
| CN105268040B CN105268040B (en) | 2018-04-17 |
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| CN201410350944.1A Active CN105268040B (en) | 2014-07-22 | 2014-07-22 | A kind of centrifugal blood pump of magnetic coupling driving |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105641762A (en) * | 2016-03-14 | 2016-06-08 | 正仁（北京）医疗仪器有限公司 | In-vitro non-implantable maglev heart chamber assisting centrifugal blood pump |
| CN107551341A (en) * | 2017-09-08 | 2018-01-09 | 美茵（北京）医疗器械研发有限公司 | The centrifugal blood pump of stability of rotation |
| CN107670135A (en) * | 2017-09-18 | 2018-02-09 | 上海交通大学医学院附属上海儿童医学中心 | A kind of single fulcrum magnetomotive drive-type centrifugal pump and its drive component |
| CN113769258A (en) * | 2021-10-08 | 2021-12-10 | 卡迪美科(北京)生物科技有限公司 | Medical centrifugal pump head |
| CN114099940A (en) * | 2021-11-25 | 2022-03-01 | 山东大学 | Mixed-flow blood pump and extracorporeal circulation auxiliary system |
| WO2022203634A1 (en) * | 2021-03-25 | 2022-09-29 | Dokuz Eylul Universitesi Rektorlugu | Centrifugal blood pump head that constitutes the propelling force of an aspiration device |
| CN115837118A (en) * | 2022-11-01 | 2023-03-24 | 北京航空航天大学 | Centrifugal blood pump driven by magnetic coupling |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658136A (en) * | 1994-08-31 | 1997-08-19 | Jostra Medizintechnik Gmbh | Centrifugal blood pump |
| CN1234854A (en) * | 1996-07-29 | 1999-11-10 | 海因里希·希玛 | Centrifugal pump for pumping blood and other shear-sensitive liquids |
| CN2381817Y (en) * | 1999-03-11 | 2000-06-07 | 王庆武 | Sandy water pump |
| CN1314552A (en) * | 2000-03-20 | 2001-09-26 | 株式会社日立制作所 | Turbine machine |
| CN1431404A (en) * | 2003-01-30 | 2003-07-23 | 李克海 | Method for transporting fluid by using super-speed rotational flows and devices |
| US6623475B1 (en) * | 1998-12-02 | 2003-09-23 | Impella Cardiosystems Ag | Blood pump without bearing |
| CN2604549Y (en) * | 2003-03-11 | 2004-02-25 | 博利源科技股份有限公司 | Scroll runner apparatus for pumping |
-
2014
- 2014-07-22 CN CN201410350944.1A patent/CN105268040B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658136A (en) * | 1994-08-31 | 1997-08-19 | Jostra Medizintechnik Gmbh | Centrifugal blood pump |
| CN1234854A (en) * | 1996-07-29 | 1999-11-10 | 海因里希·希玛 | Centrifugal pump for pumping blood and other shear-sensitive liquids |
| US6623475B1 (en) * | 1998-12-02 | 2003-09-23 | Impella Cardiosystems Ag | Blood pump without bearing |
| CN2381817Y (en) * | 1999-03-11 | 2000-06-07 | 王庆武 | Sandy water pump |
| CN1314552A (en) * | 2000-03-20 | 2001-09-26 | 株式会社日立制作所 | Turbine machine |
| CN1431404A (en) * | 2003-01-30 | 2003-07-23 | 李克海 | Method for transporting fluid by using super-speed rotational flows and devices |
| CN2604549Y (en) * | 2003-03-11 | 2004-02-25 | 博利源科技股份有限公司 | Scroll runner apparatus for pumping |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105641762A (en) * | 2016-03-14 | 2016-06-08 | 正仁（北京）医疗仪器有限公司 | In-vitro non-implantable maglev heart chamber assisting centrifugal blood pump |
| CN107551341A (en) * | 2017-09-08 | 2018-01-09 | 美茵（北京）医疗器械研发有限公司 | The centrifugal blood pump of stability of rotation |
| CN107551341B (en) * | 2017-09-08 | 2024-04-26 | 美茵（北京）医疗器械研发有限公司 | Centrifugal blood pump with stable rotation |
| CN107670135A (en) * | 2017-09-18 | 2018-02-09 | 上海交通大学医学院附属上海儿童医学中心 | A kind of single fulcrum magnetomotive drive-type centrifugal pump and its drive component |
| WO2022203634A1 (en) * | 2021-03-25 | 2022-09-29 | Dokuz Eylul Universitesi Rektorlugu | Centrifugal blood pump head that constitutes the propelling force of an aspiration device |
| CN113769258A (en) * | 2021-10-08 | 2021-12-10 | 卡迪美科(北京)生物科技有限公司 | Medical centrifugal pump head |
| CN114099940A (en) * | 2021-11-25 | 2022-03-01 | 山东大学 | Mixed-flow blood pump and extracorporeal circulation auxiliary system |
| CN115837118A (en) * | 2022-11-01 | 2023-03-24 | 北京航空航天大学 | Centrifugal blood pump driven by magnetic coupling |
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| CN105268040B (en) | 2018-04-17 |
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Effective date of registration: 20190301 Address after: 110016 No. 83, cultural road, Shenhe District, Shenyang, Liaoning Patentee after: General Hospital of the Northern War Zone of the Chinese People's Liberation Army Address before: 110016 No. 83, cultural road, Shenhe District, Shenyang, Liaoning Patentee before: Wang Huishan |
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