CN201684223U - Embedded type magnetic liquid suspension type centrifugal blood pump - Google Patents
Embedded type magnetic liquid suspension type centrifugal blood pump Download PDFInfo
- Publication number
- CN201684223U CN201684223U CN2010201925172U CN201020192517U CN201684223U CN 201684223 U CN201684223 U CN 201684223U CN 2010201925172 U CN2010201925172 U CN 2010201925172U CN 201020192517 U CN201020192517 U CN 201020192517U CN 201684223 U CN201684223 U CN 201684223U
- Authority
- CN
- China
- Prior art keywords
- impeller
- pump
- lower house
- liquid suspension
- blood pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000004369 blood Anatomy 0.000 title claims abstract description 29
- 239000008280 blood Substances 0.000 title claims abstract description 29
- 239000006194 liquid suspension Substances 0.000 title claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 3
- 208000007536 Thrombosis Diseases 0.000 abstract description 5
- 206010018910 Haemolysis Diseases 0.000 abstract description 3
- 230000008588 hemolysis Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 210000000601 blood cell Anatomy 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000002301 combined effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 210000003677 hemocyte Anatomy 0.000 description 1
- 229940000351 hemocyte Drugs 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Landscapes
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to a medical device, in particular relates to an embedded type magnetic liquid suspension type centrifugal blood pump; in the utility model, dynamic pressure liquid suspension and permanent magnet suspension combination technology is adopted, the traditional contact type mechanical bearing is replaced, no mechanical contact exists between a rotor and a stator and mechanical wearing can not happen, so as to reduce the laminating function of blood cells to the maximum extent and effectively alleviate thrombus and hemolysis; the embedded type magnetic liquid suspension type centrifugal blood pump is driven by a permanent magnet bearing no-position sensor disc type brushless direct current motor and has the characteristics of simple structure, reliable operation, convenient maintenance and stepless speed regulation and the like; te rotating speed of the utility model is low, the volume is small, the weight is light and the temperature rise is low, the inlet of the pump is directly inserted in the ventriculus sinister of human body, a pump body is arranged in the cavum pericardiale, and the gap of the cavum pericardiale can be fully utilized, and a bag is avoided from being manufactured in the human body, the pain of patients is alleviated, and reliable continuous operation of an artificial assisting cardio pump can be realized.
Description
Technical field
This utility model belongs to a kind of medical apparatus and instruments, is specifically related to a kind of implantable magnetic liquid suspension type centrifugal blood pump.
Background technology
Artificial accessory heart pump from first generation pneumatic type pulsate pump, to second filial generation mechanical bearing formula sickle pump, has developed into the floated blood pump of the third generation through the development of decades now.At present, what abroad use clinically mainly is second filial generation blood pump (employing mechanical bearing), and rotor adopts the mechanical support mode more.Owing in the pump chamber mechanical friction is arranged, makes the artificial heart auxiliary device haemolysis and thrombosis phenomenon inevitably occur.At present, the floated blood pump of the domestic third generation is in the Preliminary development stage.
Summary of the invention
The purpose of this utility model provides a kind of reliability height, implantable magnetic liquid suspension type centrifugal blood pump with low cost.
This utility model is to realize like this, it comprises the upper shell assembly implantable magnetic liquid suspension type centrifugal blood pump, lower house assembly and impeller assembly, impeller assembly is between upper shell assembly and lower house assembly, described impeller assembly comprises impeller, the magnetcisuspension magnet ring that floats, magnetic steel of motor, gasket seal, wherein, impeller has four blades, separate by four wedge-shaped slots, wedge-shaped slot is the blood guiding gutter, the wedge-shaped slot bottom surface is a space plane, and it and horizontal plane and vertical plane all have certain angle, is provided with guide face at the upper surface of impeller, the magnetcisuspension magnet ring that floats, magnetic steel of motor is installed in the impeller, and gasket seal and impeller constitute a closed structure; Described upper shell assembly comprises upper shell, coil, stator core and upper end cover, and coil and stator core are installed in the upper shell, and upper shell is fixedlyed connected with upper end cover; The lower house assembly comprises lower house, coil, stator core, upper end cover, central shaft housing, axle, the magnetostatic ring of magnetic suspension, pad and base, coil and stator core are installed in the lower house, lower house is fixedlyed connected with bottom end cover, central shaft housing and lower house constitute an integral body, the magnetostatic ring of magnetic suspension is fixed on the base by axle, and pad is between axle and the magnetostatic ring of magnetic suspension.
The upper surface of described impeller is provided with hydrodynamic configuration.
The radial flow path of pump is provided with hydrodynamic configuration.
The inner surface of upper and lower casing is coated with ceramic layer.
The utility model has the advantages that, the present invention adopts dynamic pressure liquid to suspend and the permanent magnet suspension combination technique, replaced traditional contact mechanical bearing, there is not Mechanical Contact between rotor and the stator, can not produce mechanical wear, reduced the effect that rolls to hemocyte to greatest extent, thrombosis and haemolysis can effectively alleviate.It is driven by Permanent-magnet bearing position-sensor-free disc type brushless direct current motor, has characteristics such as simple in structure, reliable, easy to maintenance and stepless speed regulation.Rotating speed of the present invention is low, volume is little, in light weight, temperature rise is low, the inlet of pump directly can be inserted the human body left ventricle, the pump housing places in the pericardial cavity, made full use of the space of pericardial cavity, avoid in human body, doing in addition the capsule bag, alleviate patient's misery, can realize the reliable continuous operation of artificial accessory heart pump.
Description of drawings
Fig. 1 is an implantable magnetic liquid suspension type centrifugal blood pump cutaway view provided by the utility model;
Fig. 2 is an implantable magnetic liquid suspension type centrifugal blood pump schematic three dimensional views provided by the utility model;
Fig. 3 is the impeller sketch map;
Fig. 4 is a pump inner flow passage structural representation.
Among the figure, 1 impeller; The 2 magnetcisuspensions magnet ring that floats; 3 magnetic steel of motor; 4 gasket seals; 5 upper shells; 6 coils; 7 stator cores; 8 upper end covers; 9 lower houses; 10 coils; 11 stator cores; 12 bottom end covers; 13 central shaft housings; 14 axles; The magnetostatic ring of 15 magnetic suspension; 16 pads; 17 bases; 18 screws; 19 inlets; 20 outlets; 21 impeller assemblies; 22 guide faces; 23 hydrodynamic configuration; 24 wedge-shaped slots; 101 standard screw thread; 102 hydrodynamic configuration curves.
The specific embodiment
Below in conjunction with the drawings and specific embodiments this utility model is described in detail:
It comprises upper shell assembly, lower house assembly and impeller assembly implantable magnetic liquid suspension type centrifugal blood pump.Impeller assembly comprises impeller 1, the unsteady magnet ring 2 of magnetcisuspension, magnetic steel of motor 3, gasket seal 4.Impeller assembly is that the impeller of centrifugal pump also is the rotor of motor, and under the combined effect of magnetic suspension and liquid suspension, impeller 1 is suspended in the pump chamber.The inside of impeller 1 is equipped with the unsteady magnet ring 2 of magnetcisuspension, the unsteady magnet ring 2 of magnetcisuspension is installed on the central shaft housing 13, axle 14 is installed in the central shaft housing 13, the unsteady magnet ring 2 of magnetcisuspension is enclosed within on the axle 14, and the bottom of central shaft housing 13 is installed on the base 17, and central shaft housing 13 passes the centre bore of upper shell 5 and lower house 9, wherein, impeller 1 has four blades, is separated by four wedge-shaped slots, and wedge-shaped slot is the blood guiding gutter.Wedge-shaped slot 24 bottom surfaces are space plane, it and horizontal plane and perpendicular all have certain angle, the big I of angle is determined according to practical application, be generally less than 90 °, upper surface at impeller 1 is provided with guide face 22, and it can improve the mobile performance of blood to guide face 22 for taper seat, prevents the blood flow dead band, reduce the formation of thrombosis, the top of impeller 1 is hydrodynamic configuration 23.Float magnet ring 2, magnetic steel of motor 3 of magnetcisuspension is embedded in the impeller 1.With gasket seal 4 laser weld and impeller 1 bottom, make the impeller sealing, avoid magnet steel to contact with blood.
The upper shell assembly comprises upper shell 5, coil 6, stator core 7 and upper end cover 8.Coil 6 and stator core 7 are installed in the upper shell 5, with upper shell 5 and upper end cover 8 laser weld, avoid coil 6 to contact with blood with stator core 7.
The lower house assembly comprises lower house 9, coil 10, stator core 11, upper end cover 12, central shaft housing 13, axle 14, the magnetostatic ring 15 of magnetic suspension, pad 16 and base 17.Coil 10 and stator core 11 are installed in the lower house 9, and lower house 9 and bottom end cover 12 avoid coil 10 to contact with blood with stator core 11 by laser weld.Central shaft housing 13 and lower house 9 are fixed by laser weld.The magnetostatic ring 15 of magnetic suspension is fixed on the base 17 by axle 14.Upper and lower surface at the magnetostatic ring 15 of magnetic suspension is placed pad 16, and pad 16 is used to regulate the relative position up and down of magnetostatic ring 15 of magnetic suspension and the unsteady magnet ring 2 of magnetcisuspension, plays the effect of regulating the magnetic suspension force size.
Upper shell assembly and lower house assembly are fixing by screw 21.
Describe concrete structure of the present utility model and operation principle in detail below in conjunction with accompanying drawing.
As shown in Figure 1: magnetic steel of motor 3 is the permanent magnetism magnetic pole that N, S alternating polarity are arranged, the permanent magnet axial magnetized, at last lower house one group of motor stator core 7,11 and motor coil 6,10 are installed respectively, behind coil electricity, produce axial rotating excitation field, 3 rotations of drive motors magnet steel, thereby impeller rotation, import department by pump case axially sucks with blood, from radially discharging, finishes artificial heart pump's assist circulation effect.
The magnetcisuspension magnet ring 2 that floats is formed by three magnet steel with the magnetostatic ring 15 of magnetic suspension, magnetic pole by N, S polar phase to laying.Magnetic suspension bearing utilizes captivation and the repulsive force between the permanent magnet to produce radial and axial suspending power.
As shown in Figure 3: the upper surface of impeller 1 is provided with hydrodynamic configuration 23.When impeller rotated, blood was brought in the wedge shape dynamic pressure face, and the pressure fluid film is pushed impeller and upper shell open, produced the axial hydrodynamic suspending power, and when dynamic pressure suspending power and axial magnetic suspension dynamic balance, impeller axially is being in poised state.Employing has the hydrodynamic configuration on peripheral ring limit, and the blood that overflows from the hydrodynamic bearing border reduces, and has increased bearing surface liquid bed thickness, increases the support force of hydrodynamic bearing, has also reduced the shearing force to blood.
As shown in Figure 4: the radial flow path of pump is provided with hydrodynamic configuration.The curve of the radial flow path of pump is generally standard screw thread 101, and what adopt in the present invention is hydrodynamic configuration curve 102, and the pump of hydrodynamic configuration curve shape radially flows to the hydrodynamic configuration that is pump.When impeller rotates, because fluid pressure inequality in the runner, impeller will be subjected to the hydraulic radial eccentric force, cause impeller off-centre.After increasing the radial dynamic pressure structure, impeller radially is being subjected to the dynamic pressure suspending power, and the radial disbalance power of impeller and radial dynamic pressure suspending power are cancelled out each other.Impeller radially is being in the suspension poised state.
Impeller is in poised state under the combined effect of dynamic pressure suspending power, magnetic suspension force, be suspended in the pump chamber, has eliminated mechanical friction.
At pump chamber is that the inner surface of upper and lower casing is coated with ceramic layer, and the air gap precision between motor stator and rotor is controlled easily, and processing technique is relatively simple, in the hardness, has also improved the surface smoothness in the pump chamber in having increased pump chamber.The equal smooth excessiveness of runner in the pump does not have the design dead angle, and the flow dead of no blood can not form thrombosis.
Claims (4)
- Implantable magnetic liquid suspension type centrifugal blood pump it comprise the upper shell assembly, lower house assembly and impeller assembly, impeller assembly is between upper shell assembly and lower house assembly, it is characterized in that: described impeller assembly comprises impeller (1), the magnetcisuspension magnet ring (2) that floats, magnetic steel of motor (3), gasket seal (4), wherein, impeller (1) has four blades, separate by four wedge-shaped slots, wedge-shaped slot is the blood guiding gutter, the wedge-shaped slot bottom surface is a space plane, it and horizontal plane and vertical plane all have certain angle, upper surface at impeller is provided with guide face, the magnetcisuspension magnet ring (2) that floats, magnetic steel of motor (3) is installed in the impeller (1), and gasket seal (4) constitutes a closed structure with impeller (1); Described upper shell assembly comprises upper shell (5), coil (6), stator core (7) and upper end cover (8), and coil (6) and stator core (7) are installed in the upper shell (5), and upper shell (5) is fixedlyed connected with upper end cover (8); The lower house assembly comprises lower house (9), coil (10), stator core (11), upper end cover (12), central shaft housing (13), axle (14), the magnetostatic ring of magnetic suspension (15), pad (16) and base (17), coil (10) and stator core (11) are installed in the lower house (9), lower house (9) is fixedlyed connected with bottom end cover (12), central shaft housing (13) constitutes an integral body with lower house (9), the magnetostatic ring of magnetic suspension (15) is fixed on the base (17) by axle (14), and pad (16) is positioned between axle (14) and the magnetostatic ring of magnetic suspension (15).
- 2. implantable magnetic liquid suspension type centrifugal blood pump as claimed in claim 1, it is characterized in that: the upper surface of described impeller (1) is provided with hydrodynamic configuration (23).
- 3. implantable magnetic liquid suspension type centrifugal blood pump as claimed in claim 1 or 2, it is characterized in that: the radial flow path of pump is provided with hydrodynamic configuration.
- 4. implantable magnetic liquid suspension type centrifugal blood pump as claimed in claim 1 or 2, it is characterized in that: the inner surface of upper and lower casing is coated with ceramic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201925172U CN201684223U (en) | 2010-05-17 | 2010-05-17 | Embedded type magnetic liquid suspension type centrifugal blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201925172U CN201684223U (en) | 2010-05-17 | 2010-05-17 | Embedded type magnetic liquid suspension type centrifugal blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201684223U true CN201684223U (en) | 2010-12-29 |
Family
ID=43372515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201925172U Expired - Lifetime CN201684223U (en) | 2010-05-17 | 2010-05-17 | Embedded type magnetic liquid suspension type centrifugal blood pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201684223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104324428A (en) * | 2014-10-17 | 2015-02-04 | 山东科技大学 | Magnetic liquid suspension centrifugal device |
-
2010
- 2010-05-17 CN CN2010201925172U patent/CN201684223U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104324428A (en) * | 2014-10-17 | 2015-02-04 | 山东科技大学 | Magnetic liquid suspension centrifugal device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102247628B (en) | Implantable magnetic liquid suspension centrifugal blood pump | |
| US11471662B2 (en) | High efficiency blood pump | |
| CN102397598B (en) | Compact axial-flow magnetic-levitation artificial heart pump | |
| CN108175884A (en) | Heart chamber auxiliary pump | |
| CN107890590B (en) | Dynamic magnetic balance suspension centrifugal blood pump | |
| CN106512118B (en) | A kind of full-implantation type magnetic liquid dual suspension axial flow blood pump | |
| CN104258481B (en) | Magnetic suspension axial flow type spiral driving device | |
| CN205460099U (en) | Novel centrifugal artificial heart pump | |
| JP2009523488A (en) | Rotary blood pump | |
| CN107837430A (en) | A kind of magnetic suspension shaft streaming self power generation artificial heart pump | |
| CN104324428B (en) | A kind of centrifugal device of magnetic liquid suspension | |
| CN201754550U (en) | Permanent magnetism bearing double-stator disc type brushless direct current motor for artificial heart | |
| CN211096485U (en) | External magnetic suspension centrifugal blood pump with central magnetic pole structure | |
| CN110585502B (en) | In-vitro magnetic suspension centrifugal blood pump for short and medium term | |
| CN209033311U (en) | Heart chamber auxiliary pump | |
| CN204890743U (en) | Axial -flow type magnetic suspension leaf wheel transmission | |
| CN1206789C (en) | Axial controllable magnetic suspension permanent magnet disk type blood pump motor | |
| WO2023226916A1 (en) | Magnetic suspension type centrifugal pump | |
| WO2023226910A1 (en) | Magnetic levitation centrifugal pump | |
| CN201684223U (en) | Embedded type magnetic liquid suspension type centrifugal blood pump | |
| CN211705441U (en) | In vitro short-medium-period magnetic suspension centrifugal blood pump | |
| WO2019041394A1 (en) | Blood pumping device | |
| CN102705246B (en) | Impeller-suspended superminiature pump | |
| CN208259961U (en) | A kind of magnetic suspension shaft streaming self power generation artificial heart pump | |
| Onuma et al. | Magnetically levitated centrifugal blood pump with radially suspended self-bearing motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Wei Inventor after: Su Jingjing Inventor after: Liu Huixiang Inventor after: Wang Yi Inventor after: Zhang Wenhai Inventor after: Liu Kang Inventor after: Li Jipeng Inventor before: Wang Wei Inventor before: Su Jingjing Inventor before: Zhang Wenhai Inventor before: Liu Kang Inventor before: Li Jipeng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG WEI SU JINGJING ZHANG WENHAI LIU KANG LI JIPENG TO: WANG WEI SU JINGJING LIU HUIXIANG WANG YI ZHANG WENHAI LIU KANG LI JIPENG |
|
| ASS | Succession or assignment of patent right |
Owner name: BEIJING PRECISION MECHANICAL AND ELECTRICAL CONTRO Free format text: FORMER OWNER: BEIJING TIANGAO ZHIJI TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20150205 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Wei Inventor after: Su Jingjing Inventor after: Jiang Yang Inventor after: Xu Jian Inventor after: Gao Hang Inventor after: Li Jipeng Inventor after: Li Xue Inventor after: Zhang Lei Inventor before: Wang Wei Inventor before: Su Jingjing Inventor before: Liu Huixiang Inventor before: Wang Yi Inventor before: Zhang Wenhai Inventor before: Liu Kang Inventor before: Li Jipeng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG WEI SU JINGJING LIU HUIXIANG WANG YI ZHANG WENHAI LIU KANG LI JIPENG TO: WANG WEI SU JINGJING JIANG YANG XU JIAN GAO HANG LI JIPENG LI XUE ZHANG LEI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150205 Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee after: Beijing Research Institute of Precise Mechatronic Controls Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee before: Beijing Tiangao Zhiji Technology Development Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20200326 Address after: 300457 workshop b3-04, b3-05 and b3-06, No. 17, No. 80, Haiyun street, Binhai New Area, Tianjin Patentee after: HANGTIAN TAIXIN TECHNOLOGY Co.,Ltd. Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee before: BEIJING RESEARCH INSTITUTE OF PRECISE MECHATRONIC CONTROLS |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |