CN108066834B - Double-suspension artificial heart blood pump - Google Patents
Double-suspension artificial heart blood pump Download PDFInfo
- Publication number
- CN108066834B CN108066834B CN201711064326.0A CN201711064326A CN108066834B CN 108066834 B CN108066834 B CN 108066834B CN 201711064326 A CN201711064326 A CN 201711064326A CN 108066834 B CN108066834 B CN 108066834B
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- impeller
- magnetic
- blood pump
- sealing cavity
- magnetic block
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- 239000008280 blood Substances 0.000 title claims abstract description 64
- 210000004369 blood Anatomy 0.000 title claims abstract description 64
- 239000000725 suspension Substances 0.000 title claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 230000009977 dual effect Effects 0.000 claims description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005339 levitation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/824—Hydrodynamic or fluid film bearings
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Mechanical Engineering (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a double-suspension artificial heart blood pump which comprises a motor, a sealing cavity, an impeller, a first magnetic ring and an inlet pipe, wherein the motor is arranged right above or right below the sealing cavity, the impeller is arranged in the sealing cavity, the inlet pipe is communicated with the inlet end of the sealing cavity, the first magnetic ring is arranged at the top or bottom of the sealing cavity, the sealing cavity comprises an upper blood pump shell and a lower blood pump shell, an upper hydrodynamic bearing groove is formed in one surface of the upper blood pump shell, which is close to the impeller, of the upper blood pump shell, a lower hydrodynamic bearing groove is formed in the other surface of the lower blood pump shell, which is close to the impeller, of the lower blood pump shell, a second magnetic ring corresponding to the first magnetic ring is arranged on the impeller or the sealing cavity, and a rotor magnet is arranged on the impeller. The beneficial effects of the invention are as follows: the hydraulic suspension and magnetic suspension double suspension are realized, and the reliability is improved.
Description
Technical Field
The invention relates to medical equipment, in particular to a double-suspension artificial heart blood pump.
Background
Most of the existing centrifugal blood pumps adopt one of hydraulic suspension and magnetic suspension, so that the impact resistance and reliability of the existing centrifugal blood pumps are obviously insufficient.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a double-suspension artificial heart blood pump.
The invention provides a double-suspension artificial heart blood pump which comprises a motor, a sealing cavity, an impeller, a first magnetic ring and an inlet pipe, wherein the motor is arranged right above or right below the sealing cavity, the impeller is arranged in the sealing cavity, the inlet pipe is communicated with the inlet end of the sealing cavity, the first magnetic ring is arranged at the top or bottom of the sealing cavity, the sealing cavity comprises an upper blood pump shell and a lower blood pump shell, an upper hydrodynamic bearing groove is formed in one surface of the upper blood pump shell, which is close to the impeller, of the upper blood pump shell, a lower hydrodynamic bearing groove is formed in the other surface of the lower blood pump shell, which is close to the impeller, of the lower blood pump shell, a second magnetic ring corresponding to the first magnetic ring is arranged on the impeller or the sealing cavity, and a rotor magnet is arranged on the impeller.
As a further improvement of the invention, the rotor magnet comprises a first magnetic block and a second magnetic block, wherein the first magnetic block and the second magnetic block are alternately arranged and wound around the impeller for one circle.
As a further improvement of the invention, the double-suspension artificial heart blood pump further comprises an impeller cover plate, wherein the impeller cover plate covers the first magnetic block and the second magnetic block and is sealed with the bottom surface of the impeller.
As a further improvement of the invention, the second magnetic block comprises a central magnetic block close to the center of the impeller and a circumferential magnetic block far from the center of the impeller.
As a further improvement of the invention, the magnetic poles of the first magnetic block and the circumferential magnetic block are opposite, and the magnetic poles of the central magnetic block and the circumferential magnetic block are opposite.
As a further improvement of the invention, the outer diameter of the first magnetic ring is equal to the outer diameter of the central magnetic block, and the inner diameter of the first magnetic ring is equal to the inner diameter of the central magnetic block.
As a further improvement of the invention, the inner wall of the mouth of the inlet pipe is provided with a flow guiding taper.
As a further improvement of the invention, the double-suspension artificial heart blood pump further comprises a motor housing, and the motor is arranged in the motor housing.
As a further improvement of the invention, the upper hydrodynamic bearing groove is any one of spiral, conical, spherical and inclined plane, and the lower hydrodynamic bearing groove is any one of spiral, conical, spherical and inclined plane.
As a further improvement of the invention, an auxiliary magnetic ring corresponding to the first magnetic ring is arranged on the bottom surface of the sealing cavity, and the motor is arranged at the inlet end of the sealing cavity.
The beneficial effects of the invention are as follows: through the scheme, hydraulic suspension and magnetic suspension double suspension are realized, and the reliability is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a dual suspension artificial heart blood pump of the present invention.
Fig. 2 is a double suspension schematic diagram of a double suspension artificial heart blood pump of the present invention.
Fig. 3 is a schematic diagram of an impeller of a dual suspension artificial heart blood pump of the present invention.
Fig. 4 is a schematic diagram of the installation of an auxiliary magnetic ring of a double-suspension artificial heart blood pump according to the invention.
Fig. 5 is a schematic diagram of the motor installation of a dual suspension artificial heart blood pump of the present invention.
Fig. 6 is a schematic diagram of the motor installation of a dual suspension artificial heart blood pump of the present invention.
Fig. 7 is a magnetic layout of a rotor magnet of a dual suspension artificial heart blood pump of the present invention.
Fig. 8 is a magnetic layout of a rotor magnet of a dual suspension artificial heart blood pump of the present invention.
Fig. 9 is a magnetic layout of a rotor magnet of a dual suspension artificial heart blood pump of the present invention.
Fig. 10 is a magnetic layout of a rotor magnet of a dual suspension artificial heart blood pump of the present invention.
Detailed Description
The invention is further described with reference to the following description of the drawings and detailed description.
As shown in fig. 1 to 10, a double-suspension artificial heart blood pump comprises a motor 6, a sealing cavity 3, an impeller 11, a first magnetic ring 2 and an inlet pipe 1, wherein the motor 6 is arranged right above or right below the sealing cavity 3, the impeller 11 is arranged in the sealing cavity 3, the inlet pipe 1 is communicated with the inlet end of the sealing cavity 3, the first magnetic ring 2 is arranged at the top of the sealing cavity 3, the sealing cavity 3 comprises an upper blood pump shell 31 and a lower blood pump shell 32, the first magnetic ring 2, the upper blood pump shell 31, the impeller 11 and the lower blood pump shell 32 are arranged from top to bottom and are horizontally arranged, an upper hydraulic bearing groove 311 is formed in the bottom surface of the upper blood pump shell 31, which is close to the impeller 11, a lower hydraulic bearing groove 321 is formed in the top surface of the lower blood pump shell 32, which is close to the impeller 11, a second magnetic ring 13 corresponding to the first magnetic ring 2 is arranged on the impeller 11 or the sealing cavity 3, and a rotor 14 is arranged at the bottom of the impeller 11.
As shown in fig. 1 to 10, the rotor magnet 14 includes a first magnetic block 8 and a second magnetic block, the first magnetic block 8 and the second magnetic block are alternately arranged and wound around the impeller 11 for one circle, and the first magnetic block 8 and the second magnetic block are preferably fan-shaped.
As shown in fig. 1 to 10, the double-suspension artificial heart blood pump further comprises an impeller cover plate 7, wherein the impeller cover plate 7 covers the first magnetic block 8 and the second magnetic block and is welded and sealed with the bottom surface of the impeller 11.
As shown in fig. 1 to 10, the second magnetic block includes a central magnetic block 10 near the center of the impeller 11 and a circumferential magnetic block 9 far from the center of the impeller.
As shown in fig. 1 to 10, the magnetic poles of the first magnetic block 8 and the circumferential magnetic block 9 are opposite, and the magnetic poles of the central magnetic block 10 and the circumferential magnetic block 9 are opposite.
As shown in fig. 1 to 10, the outer diameter of the first magnetic ring 2 is equal to the outer diameter of the central magnetic block 10, and the inner diameter of the first magnetic ring 2 is equal to the inner diameter of the central magnetic block 10.
As shown in fig. 1 to 10, the inner wall of the mouth of the inlet pipe 1 is provided with a flow guiding taper.
As shown in fig. 1 to 10, the double-suspension artificial heart blood pump further comprises a motor housing 5, the motor 6 is located right below the impeller 11, the motor 6 is arranged in the motor housing 5 through bolts, and the sealing cavity 4 is fixed right above the motor housing 5.
As shown in fig. 1 to 10, the upper hydrodynamic bearing groove 311 is any one of a spiral shape, a cone shape, and a sphere shape, and the lower hydrodynamic bearing groove 321 is any one of a spiral shape, a cone shape, and a sphere shape.
As shown in fig. 1 to 10, an auxiliary magnetic ring 12 corresponding to the first magnetic ring 2 is disposed on the bottom surface of the sealing cavity 3.
As shown in fig. 1 to 10, the motor 6 is disposed at the inlet end of the sealed chamber 3.
As shown in fig. 1 to 10, the inlet tube 1 is an inlet of a blood pump, is used for being inserted into the apex of the left ventricle of the heart, has a certain taper on the inner wall, and has good flow guiding effect. The primary function of the first magnetic ring 2 is to provide upward suspension force for the impeller 11, and the first magnetic ring is arranged in an annular groove on the outer wall of the sealing cavity 3 and is positioned between the inlet pipe 1 and the upper wall surface of the sealing cavity 3. The impeller assembly 4 is used as a key component of the whole centrifugal pump, is positioned in the sealed cavity 3, has a certain gap with the upper wall surface and the lower wall surface of the sealed cavity 3, and as shown in fig. 3 (the impeller assembly 4 is provided with the impeller cover plate 7), the impeller assembly 4 mainly comprises the impeller cover plate 7, the first magnetic block 8, the circumferential magnetic block 9, the central magnetic block 10 and the impeller 11. The impeller 11 is circumferentially distributed with fan grooves and flow passages (four or eight flow passages) between the fan grooves, and such a layout greatly reduces the thickness of the impeller assembly 4, thereby reducing the mass of the whole centrifugal pump. Three different sector magnetic blocks are arranged in a sector groove of the impeller 11, wherein the combination of the circumferential magnetic blocks 9 and the central magnetic blocks 10 and the first magnetic blocks 8 are alternately arranged, and finally, the impeller cover plate 7 is used for covering and then welding and sealing. Thrust hydraulic bearing grooves, such as spiral, conical or spherical grooves, are formed in the upper and lower bottom surfaces of the sealing cavity 3, and thrust hydraulic levitation force is provided for the impeller assembly 4 when the impeller assembly operates. The motor 6 is a power element of the whole centrifugal blood pump, is positioned right below the impeller 11 and is arranged in the motor shell 5 through bolts.
As shown in fig. 1 to 10, the double-suspension artificial heart blood pump provided by the invention adopts a single stator and a single rotor, and uses a magnetic ring to balance electromagnetic force generated by a motor 6 to an impeller 11 to form magnetic suspension, and additionally an upper hydrodynamic bearing groove 311 and a lower hydrodynamic bearing groove 321 are added to form hydrodynamic suspension. As shown in fig. 2, in the axial direction, electromagnetic force F2 generated by the motor 6 and attractive force F1 generated by the upper second magnetic ring act on the upper and lower surfaces of the impeller 11 and are balanced; the upper and lower cavities balance hydrodynamic bearing thrust forces F5 and F6 generated by the impeller 11. In the radial direction, the attractive force F3 generated by the upper second magnetic ring and the attractive force F4 generated by the rotor and the motor 6 pull the impeller 11 back to the central position, so that the impeller 11 carries out passive magnetic suspension in the radial direction. The device has the advantages of compact structure, high reliability, better manufacturing manufacturability, long service life and the like, and has great development potential.
In this structure, as shown in fig. 4, 5 and 6, compared with the structure of fig. 1, an auxiliary magnetic ring 12 is added to the bottom surface of the sealed cavity 3 in fig. 4, that is, an upward auxiliary magnetic force is added. In comparison with the structure of fig. 1, fig. 5 mounts the motor 6 on the inlet side of the sealed cavity 3, and the second magnetic ring 13 is mounted on the lower surface of the sealed cavity 3. In comparison to the configuration of fig. 5, fig. 6 adds a magnetic ring on the inlet side.
The working principle of the double-suspension artificial heart blood pump provided by the invention is that the motor 6 drives the impeller rotor to rotate by generating a rotating magnetic field, blood is pumped into the pump body from the inlet pipe 1, flows into the impeller rotor flow channel after being guided by the boss and rotates along with the rotor, the blood is thrown out from the impeller rotor flow channel outlet due to the effect of centrifugal force, the thrown blood is slowly reduced in the volute, the conversion from kinetic energy to pressure energy is realized, and finally the blood is pumped out from the pump outlet.
In the whole pump working process, the most critical technology is a suspension technology, and the invention adopts a suspension mode combining hydraulic suspension and magnetic suspension in the axial direction and adopts a passive suspension mode of magnetic suspension in the radial direction. The polarities of the fan-shaped magnets of the impeller are shown in fig. 7, and an axial magnetizing mode is adopted. The first magnetic ring 2 has the same outer diameter and inner diameter as the central magnet 10 and is installed with the opposite polarity, so that there is an upward attraction force to the impeller 11 in the axial direction. The polarities N, S of the sector magnetic blocks 8 and the circumferential magnetic blocks 9 are alternately arranged, when the motor 6 is electrified and runs, a downward attractive force exists on the whole impeller 11, and the attractive force can be controlled by a control system, so that the position of the impeller assembly 4 in the sealed cavity 3 is controlled, and the active control suspension technology is realized. In addition, the thrust bearing is machined on the inner bottom surface of the cavity, and the passive hydraulic suspension mode has two main functions: the impeller can be assisted to start during starting, so that the starting current is reduced; this blood pump may be assisted in running for a period of time when the magnetic levitation fails. In the radial direction, when the impeller 11 is offset from the center, the first magnetic ring 2 also generates an attractive force on the impeller 11 in the radial direction, so that the impeller 11 is forced to return to the center position in the radial direction, and the radial passive magnetic suspension of the impeller 11 is realized.
In a further variant of the present construction, as shown in fig. 8, the first magnetic ring 2 is reversed with respect to fig. 7, except that the magnets are magnetically mounted in opposition. In addition, fig. 9 and 10 show a four-channel magnet arrangement.
The double-suspension artificial heart blood pump provided by the invention has the following advantages:
1. and (5) double suspension control. The invention adopts a suspension mode combining hydraulic suspension and magnetic suspension in the axial direction, adopts a magnetic suspension passive suspension mode in the radial direction, has controllable rigidity, high control precision, strong shock resistance and high reliability.
2. Weight is reduced. The magnet is arranged between the runners, so that the thickness of the impeller is greatly reduced, the thickness of the whole blood pump is further reduced, the weight is reduced, and the blood pump is more beneficial to implantation into a human body.
3. And the processing efficiency is improved. Simplifying the structure and improving the manufacturing manufacturability.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (6)
1. A double suspension artificial heart blood pump, characterized in that: comprises a motor, a sealing cavity, an impeller, a first magnetic ring and an inlet pipe, wherein the motor is arranged right above or right below the sealing cavity, the impeller is arranged in the sealing cavity, the inlet pipe is communicated with the inlet end of the sealing cavity, the first magnetic ring is arranged at the top of the sealing cavity, the sealing cavity comprises an upper casing and a lower casing of the blood pump, an upper hydrodynamic bearing groove is arranged on one surface of the upper casing of the blood pump, which is close to the impeller, a lower hydrodynamic bearing groove is arranged on the other surface of the lower casing of the blood pump, which is close to the impeller, a second magnetic ring corresponding to the first magnetic ring is arranged on the impeller, a rotor magnet is arranged on the impeller, the rotor magnet comprises a first magnetic block and a second magnetic block, the first magnetic blocks and the second magnetic blocks are alternately arranged and wound around the impeller, the second magnetic blocks comprise a central magnetic block close to the center of the impeller and a circumferential magnetic block far away from the center of the impeller, the first magnetic ring, the second magnetic ring and the rotor magnet are arranged along the axial direction of the impeller, the magnetic pole of one side of the first magnetic ring, which faces the central magnetic block, is opposite to the magnetic pole of one side of the central magnetic block, which faces the first magnetic ring, the outer diameter of the first magnetic ring is equal to the outer diameter of the central magnetic block, the inner diameter of the first magnetic ring is equal to the inner diameter of the central magnetic block, the magnetic poles of the first magnetic block and the circumferential magnetic block are opposite, and the magnetic poles of the central magnetic block and the circumferential magnetic block are opposite.
2. The dual suspension artificial heart blood pump of claim 1, wherein: the double-suspension artificial heart blood pump further comprises an impeller cover plate, wherein the impeller cover plate covers the first magnetic block and the second magnetic block and is sealed with the bottom surface of the impeller.
3. The dual suspension artificial heart blood pump of claim 1, wherein: the inner wall of the mouth of the inlet pipe is provided with a flow guiding taper.
4. The dual suspension artificial heart blood pump of claim 1, wherein: the double-suspension artificial heart blood pump further comprises a motor shell, and the motor is installed in the motor shell.
5. The dual suspension artificial heart blood pump of claim 1, wherein: the upper hydrodynamic bearing groove is any one of spiral, conical, spherical and inclined surfaces, and the lower hydrodynamic bearing groove is any one of spiral, conical, spherical and inclined surfaces.
6. The dual suspension artificial heart blood pump of claim 1, wherein: an auxiliary magnetic ring corresponding to the first magnetic ring is arranged on the bottom surface of the sealing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064326.0A CN108066834B (en) | 2017-11-02 | 2017-11-02 | Double-suspension artificial heart blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064326.0A CN108066834B (en) | 2017-11-02 | 2017-11-02 | Double-suspension artificial heart blood pump |
Publications (2)
| Publication Number | Publication Date |
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| CN108066834A CN108066834A (en) | 2018-05-25 |
| CN108066834B true CN108066834B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711064326.0A Active CN108066834B (en) | 2017-11-02 | 2017-11-02 | Double-suspension artificial heart blood pump |
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| CN (1) | CN108066834B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2018280236B2 (en) | 2017-06-07 | 2024-06-06 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| CN112004563A (en) | 2018-02-01 | 2020-11-27 | 施菲姆德控股有限责任公司 | Intravascular blood pump and methods of use and manufacture |
| CN111375098B (en) * | 2018-12-29 | 2023-04-07 | 上海微创心力医疗科技有限公司 | Percutaneous blood pump and rotor limit structure thereof |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| WO2021016372A1 (en) | 2019-07-22 | 2021-01-28 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| CN112156255B (en) * | 2020-10-14 | 2022-07-26 | 北京航空航天大学 | Magnetic suspension centrifugal blood pump with integrated extracorporeal circulation magnetic wheel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247628A (en) * | 2010-05-17 | 2011-11-23 | 北京天高智机技术开发公司 | Implantable magnetic liquid suspension centrifugal blood pump |
| CN208927213U (en) * | 2017-11-02 | 2019-06-04 | 深圳核心医疗器械有限公司 | A kind of dual suspension artificial heart blood pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU741418B2 (en) * | 1998-04-22 | 2001-11-29 | Medquest Products, Inc. | Implantable centrifugal blood pump with hybrid magnetic bearings |
| JP4340183B2 (en) * | 2004-03-31 | 2009-10-07 | テルモ株式会社 | Centrifugal blood pump device |
| CN101732769B (en) * | 2010-01-26 | 2011-10-05 | 浙江大学 | Implantable blood pump adopting driven suspension bearing |
| US10371152B2 (en) * | 2015-02-12 | 2019-08-06 | Tc1 Llc | Alternating pump gaps |
-
2017
- 2017-11-02 CN CN201711064326.0A patent/CN108066834B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247628A (en) * | 2010-05-17 | 2011-11-23 | 北京天高智机技术开发公司 | Implantable magnetic liquid suspension centrifugal blood pump |
| CN208927213U (en) * | 2017-11-02 | 2019-06-04 | 深圳核心医疗器械有限公司 | A kind of dual suspension artificial heart blood pump |
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| CN108066834A (en) | 2018-05-25 |
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Country or region after: China Address after: 518000 1601, building D3, Nanshan Zhiyuan, No. 1001, Xueyuan Avenue, Changyuan community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Applicant after: Shenzhen Core Medical Technology Co.,Ltd. Address before: 518000 qiugu 202, workshop a, fengyeyuan industrial plant, Liuxian 2nd Road, Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN CORE MEDICAL TECHNOLOGY Co.,Ltd. Country or region before: China |
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