CN113750364A - Implanted magnetic suspension axial flow blood pump - Google Patents
Implanted magnetic suspension axial flow blood pump Download PDFInfo
- Publication number
- CN113750364A CN113750364A CN202111120923.7A CN202111120923A CN113750364A CN 113750364 A CN113750364 A CN 113750364A CN 202111120923 A CN202111120923 A CN 202111120923A CN 113750364 A CN113750364 A CN 113750364A
- Authority
- CN
- China
- Prior art keywords
- impeller
- permanent magnet
- rotor
- rear guide
- pump shell
- 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.)
- Pending
Links
Images
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
- A61M60/10—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
-
- 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
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow 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
- A61M60/40—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
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor 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
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/804—Impellers
-
- 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
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
Abstract
The invention discloses an implanted magnetic suspension axial flow blood pump, which comprises: the transparent pump shell assembly comprises a rotor impeller and a rear guide impeller, wherein the rotor impeller is provided with a permanent magnet sleeve; the transparent pump shell assembly comprises a rotor impeller pump shell and a rear guide impeller pump shell, and a backflow slit is arranged between the rotor impeller and the rotor impeller pump shell, so that the influence of tip clearance leakage vortex on blood is eliminated, and the incidence rate of blood damage is reduced; the permanent magnet assembly is arranged in the permanent magnet sleeve, so that the axial positioning, the radial positioning and the rotation control of the rotor impeller are realized, and the defect that thrombus is easily formed at the mechanical bearing when the rotor impeller is fixed at the axial position and the radial position by the mechanical bearing in the traditional design is overcome; the back guide impeller can enable blood to form stable flow after flowing out of the blood pump, provides better inflow conditions for the natural heart, effectively reduces adverse effects of the operation of the blood pump on the natural heart, and can provide medium and long-term circulation support for critical patients with complete loss of blood pumping function of the heart.
Description
Technical Field
The invention relates to the technical field of artificial heart pumps, in particular to an implanted magnetic suspension axial flow blood pump.
Background
About 3.3 hundred million cardiovascular disease patients in 2019 in China are predicted by the national health committee that the prevalence rate of cardiovascular diseases is still in an ascending stage, and the disease is a great public health problem. However, since the number of natural heart donations is far from meeting the demand, researchers are turning to the development of artificial blood pumps to replace the natural heart. The existing artificial blood pump technology often faces serious blood compatibility problems, so that a patient suffers from a plurality of complications and even dies. The blood pump is optimized according to the current urgent need, the blood compatibility is improved, the service life is prolonged, and the survival rate of patients is further improved. The rotor impeller of the existing axial flow blood pump mostly adopts a mechanical support bearing, and a series of problems of abrasion, frictional heat, blood pollution of a sealing device and the like exist due to high-speed rotation.
Disclosure of Invention
The invention aims to provide an implanted magnetic suspension axial flow blood pump, which adopts a rotor impeller comprising a permanent magnet sleeve, reduces blood damage caused by poor flow characteristics, and improves the defect of thrombus formation at a mechanical bearing in the traditional design; can provide medium and long term circulation support for severe patients with complete loss of the heart pumping function, reduce the incidence of blood injury and complications of the patients and ensure the life safety of the patients.
The technical scheme adopted by the invention is as follows: an implantable magnetic levitation axial blood pump, comprising: a transparent pump shell assembly, a rotor impeller and a back guide impeller; the transparent pump shell assembly is made of polyurethane; the transparent pump shell assembly comprises a rotor impeller pump shell and a rear guide impeller pump shell; the rotor impeller is positioned in the rotor impeller pump shell, the side edges of the rotor impeller and the rotor impeller pump shell are provided with backflow slits, and the width of each backflow slit is 0.5 mm to 1.5 mm; the rotor impeller comprises rotor blades, a front guide cone, a rotor impeller shaft, a permanent magnet sleeve and a permanent magnet assembly, wherein the permanent magnet assembly is arranged in the permanent magnet sleeve, and the axial length of the permanent magnet sleeve is equal to that of the rotor blades; the rotor blades are spiral and are distributed between the permanent magnet sleeve and the rotor impeller shaft at equal intervals in an alternating mode, and the number of the rotor blades is four; the permanent magnet assembly comprises a front axial annular permanent magnet, a radial annular permanent magnet and a rear axial annular permanent magnet which are positioned in the permanent magnet sleeve, wherein the front axial annular permanent magnet and the rear axial annular permanent magnet are used for axially positioning the rotor impeller, and the radial annular permanent magnet is used for radially positioning the rotor impeller; the rear guide impeller is positioned in the rear guide impeller pump shell, and the rear guide impeller is fixedly connected with the rear guide impeller pump shell; the rear guide impeller comprises rear guide impeller blades, a rear guide impeller shaft and a rear guide cone, and the molded lines of the rear guide impeller shaft and the rear guide cone are in smooth transition; the rear guide vane wheel blades are spiral and are distributed between the rear guide vane wheel pump shell and the rear guide vane wheel shaft at equal intervals in an alternating mode, and the number of the rear guide vane wheel blades is four; the front end of the rotor impeller pump shell is a blood inlet, and the rear end of the rear guide impeller pump shell is a blood outlet.
Further, the inner surface of the transparent pump casing assembly, the surface of the rotor impeller and the surface of the back guide impeller are coated with an anticoagulant coating to reduce the risk of platelet activation coagulation to form thrombus.
Compared with the prior art, the invention has the following beneficial effects: according to the implantable magnetic suspension axial flow blood pump provided by the invention, the back guide impeller is arranged, so that blood flows form stable flow after flowing out of the blood pump, a better inflow condition is provided for a natural heart, and adverse effects of the operation of the blood pump on the natural heart are effectively reduced; the rotor impeller comprising the permanent magnet sleeve replaces the traditional rotor impeller, so that the influence of tip clearance leakage vortex on blood is eliminated, the blood damage occurrence rate is reduced, meanwhile, the direct contact between the rotor impeller and a static part is avoided, and the damage of vibration of the rotor impeller to other parts during working is effectively reduced; the front axial annular permanent magnet and the rear axial annular permanent magnet are adopted to control the axial position of the rotor impeller, and the radial annular permanent magnet is adopted to control the radial position of the rotor impeller, so that the defect that the axial position and the radial position of the rotor impeller are fixed by a mechanical bearing to form thrombus at the mechanical bearing in the traditional design is overcome.
Drawings
FIG. 1 is a cross-sectional view of the apparatus of the present invention;
FIG. 2 is a front view of the apparatus of the present invention;
FIG. 3 is a left side view of the device of the present invention;
FIG. 4 is a right side view of the apparatus of the present invention;
FIG. 5 is a schematic view of a rotor wheel according to the present invention;
FIG. 6 is a schematic view of a back guide vane wheel according to the present invention;
FIG. 7 is a schematic view of the internal flow of the present invention;
wherein, 1: a transparent pump housing assembly; 2: a rotor impeller; 3: a back guide impeller; 4: a rotor impeller pump housing; 5: a rear guide impeller pump shell; 6: a reflow slit; 7: a rotor blade; 8: a leading cone; 9: a rotor impeller shaft; 10: a permanent magnet sleeve; 11: a permanent magnet assembly; 12: a front axial annular permanent magnet; 13: a radial annular permanent magnet; 14: a rear axial annular permanent magnet; 15: a back guide impeller blade; 16: a back guide impeller shaft; 17: a rear guide cone; 18: a blood inlet; 19: and (4) a blood outlet.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, which are included by way of illustration and not by way of limitation.
As shown in fig. 1 and 2, an implantable magnetic levitation axial blood pump includes: a transparent pump shell component 1, a rotor impeller 2 and a back guide impeller 3; the transparent pump shell component 1 is made of polyurethane; the transparent pump shell assembly 1 comprises a rotor impeller pump shell 4 and a rear guide impeller pump shell 5, wherein the rotor impeller 2 is positioned in the rotor impeller pump shell 4, backflow slits 6 are arranged on the side edges of the rotor impeller 2 and the rotor impeller pump shell 4, the width of the backflow slits 6 is 0.5 mm to 1.5 mm, the flow in the backflow slits 6 is influenced by the pressure difference between the upstream and the downstream of the rotor impeller 2, and under the design working condition, the blood flow in the backflow slits 6 can effectively flush the wall surface, so that the risk of thrombus is reduced; the rotor impeller 2 comprises rotor blades 7, a front guide cone 8, a rotor impeller shaft 9, a permanent magnet sleeve 10 and a permanent magnet assembly 11, wherein the permanent magnet assembly 11 is arranged in the permanent magnet sleeve 10, and the axial length of the permanent magnet sleeve 10 is equal to that of the rotor blades 7.
As shown in fig. 5, the rotor blades 7 are helical, and four blades are alternately and equally spaced between the permanent magnet sleeve 10 and the rotor wheel shaft 9.
The permanent magnet assembly 11 comprises a front axial annular permanent magnet 12, a radial annular permanent magnet 13 and a rear axial annular permanent magnet 14 which are positioned in the permanent magnet sleeve 10, wherein the front axial annular permanent magnet 12 and the rear axial annular permanent magnet 14 are used for axially positioning the rotor impeller 2, and the radial annular permanent magnet 13 is used for radially positioning the rotor impeller 2, so that the stable rotation of the rotor impeller 2 is jointly ensured, the severe change of the width of the backflow slit 6 caused by the rotation oscillation of the rotor impeller 2 is avoided, and the generation of hemolysis at the backflow slit 6 is further inhibited; the rear guide impeller 3 is positioned in the rear guide impeller pump shell 5, and the rear guide impeller 3 is fixedly connected with the rear guide impeller pump shell 5; the rear guide impeller 3 comprises rear guide impeller blades 15, a rear guide impeller shaft 16 and a rear guide cone 17, and molded lines of the rear guide impeller shaft 16 and the rear guide cone 17 are in smooth transition, so that the generation of flow separation is inhibited.
As shown in fig. 6, the back guide vane 15 is spiral, and has four pieces, and is alternately and equally spaced between the back guide vane pump casing 5 and the back guide vane shaft 16.
As shown in fig. 7, the front end of the rotor impeller pump casing 4 is a blood inlet 18, and the rear end of the back guide impeller pump casing 5 is a blood outlet 19.
The inner surface of the transparent pump housing assembly 1, the surface of the rotor impeller 2 and the surface of the back guide impeller 3 are coated with an anti-coagulant coating to reduce the risk of platelet activation coagulation to form thrombi.
The first embodiment is as follows: stable cycle conditions in clinic
During operation, the rotation of the rotor impeller 2 is controlled by an electromagnetic system outside the pump: the axial positioning of the rotor impeller 2 is realized by electromagnetic control of the front axial annular permanent magnet 12 and the rear axial annular permanent magnet 14; the radial positioning and the rotation control of the rotor impeller 2 are realized by the electromagnetic control of the radial annular permanent magnet 13; thereby ensuring stable rotation of the rotor wheel 2.
Under the stable circulation condition, blood flows into the blood pump from the blood inlet 18 and flows into the rotor impeller 2 under the flow guiding action of the front guide cone 8. After the rotor impeller 2 rotates, is accelerated and pressurized, flows through the rear guide impeller 3 and flows out of the blood pump from the blood outlet 19; after a small part of blood flows out of the rotor impeller 2, under the influence of the pressure difference between the upstream and the downstream of the rotor impeller 2, the small part of blood flows back to the front side of the rotor impeller 2 through the backflow slit 6, and then flows into the blood flowing in the upstream of the rotor impeller 2 and flows into the rotor impeller 2.
Example two: machine removal state
In a machine withdrawal state, the implanted magnetic suspension axial flow blood pump maintains the stable circulation working condition in the first embodiment, and the rotating speed of the rotor impeller 2 is gradually reduced by monitoring the human body circulation signs so as to match the pulsation effect of the heart of the patient; and after the human body completely recovers the autonomous circulation, removing the blood pump, and finishing machine withdrawal.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (2)
1. An implantable magnetic levitation axial blood pump, comprising: the transparent pump shell assembly (1), the rotor impeller (2) and the rear guide impeller (3); the transparent pump shell assembly (1) is made of polyurethane; the transparent pump shell assembly (1) comprises a rotor impeller pump shell (4) and a rear guide impeller pump shell (5); the rotor impeller (2) is positioned in the rotor impeller pump shell (4), the side edges of the rotor impeller (2) and the rotor impeller pump shell (4) are provided with backflow slits (6), and the width of the backflow slits (6) is 0.5 mm to 1.5 mm; the rotor impeller (2) comprises rotor blades (7), a front guide cone (8), a rotor impeller shaft (9), a permanent magnet sleeve (10) and a permanent magnet assembly (11), wherein the permanent magnet assembly (11) is arranged in the permanent magnet sleeve (10), and the axial length of the permanent magnet sleeve (10) is equal to that of the rotor blades (7); the rotor blades (7) are spiral and are distributed between the permanent magnet sleeve (10) and the rotor impeller shaft (9) at equal intervals in turn; the permanent magnet assembly (11) comprises a front axial annular permanent magnet (12), a radial annular permanent magnet (13) and a rear axial annular permanent magnet (14) which are positioned in the permanent magnet sleeve (10), wherein the front axial annular permanent magnet (12) and the rear axial annular permanent magnet (14) are used for axially positioning the rotor impeller (2), and the radial annular permanent magnet (13) is used for radially positioning the rotor impeller (2); the rear guide impeller (3) is positioned in the rear guide impeller pump shell (5), and the rear guide impeller (3) is fixedly connected with the rear guide impeller pump shell (5); the rear guide impeller (3) comprises rear guide impeller blades (15), a rear guide impeller shaft (16) and a rear guide cone (17), and molded lines of the rear guide impeller shaft (16) and the rear guide cone (17) are in smooth transition; the rear guide vane wheel blades (15) are spiral and are four in number and are alternately distributed between the rear guide vane wheel pump shell (5) and the rear guide vane wheel shaft (16) at equal intervals; the front end of the rotor impeller pump shell (4) is a blood inlet (18), and the rear end of the rear guide impeller pump shell (5) is a blood outlet (19).
2. An implantable magnetic levitation axial blood pump according to claim 1, wherein the inner surface of the transparent pump housing assembly (1), the surface of the rotor impeller (2) and the surface of the trailing impeller (3) are coated with an anti-coagulant coating to reduce the risk of platelet-activated clotting forming thrombus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120923.7A CN113750364A (en) | 2021-09-24 | 2021-09-24 | Implanted magnetic suspension axial flow blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120923.7A CN113750364A (en) | 2021-09-24 | 2021-09-24 | Implanted magnetic suspension axial flow blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113750364A true CN113750364A (en) | 2021-12-07 |
Family
ID=78797371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111120923.7A Pending CN113750364A (en) | 2021-09-24 | 2021-09-24 | Implanted magnetic suspension axial flow blood pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113750364A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030163019A1 (en) * | 2002-02-28 | 2003-08-28 | Goldowsky Michael P. | Magnetic suspension blood pump |
| CN101601875A (en) * | 2009-06-11 | 2009-12-16 | 浙江大学 | The blood passive control suspension bearing that is used for applied to implantable centrifugal blood pump |
| CN102019002A (en) * | 2010-12-03 | 2011-04-20 | 中山哈特人工心脏实验室有限公司 | Implanted hollow minimal axial blood pump |
| CN103083742A (en) * | 2013-01-18 | 2013-05-08 | 江苏大学 | Low-blood-loss micro axial-flow type artificial heart |
| CN103877630A (en) * | 2014-04-15 | 2014-06-25 | 长治市久安人工心脏科技开发有限公司 | Heart auxiliary device of axial magnetic force unloading type axial flow pump |
| CN104826183A (en) * | 2015-05-26 | 2015-08-12 | 山东大学 | Blood flow guide device of centrifugal magnetic suspension artificial heart pump |
| CN105688298A (en) * | 2016-01-13 | 2016-06-22 | 山东大学 | Novel inner impeller axial flow blood pump |
| CN106512118A (en) * | 2016-11-02 | 2017-03-22 | 中南大学 | Totally-implanted magnetic liquid dual-suspension axial-flow blood pump |
| CN107261231A (en) * | 2017-07-25 | 2017-10-20 | 中国医学科学院阜外医院 | A kind of Axial feedback controls magnetic levitation axial flow blood pump |
| CN108404237A (en) * | 2017-02-09 | 2018-08-17 | 王改峰 | Impeller alternation rotary type suspension centrifugal blood pump |
| CN212651227U (en) * | 2020-07-02 | 2021-03-05 | 中国医学科学院阜外医院 | Magnetic suspension blood pump device |
-
2021
- 2021-09-24 CN CN202111120923.7A patent/CN113750364A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030163019A1 (en) * | 2002-02-28 | 2003-08-28 | Goldowsky Michael P. | Magnetic suspension blood pump |
| CN101601875A (en) * | 2009-06-11 | 2009-12-16 | 浙江大学 | The blood passive control suspension bearing that is used for applied to implantable centrifugal blood pump |
| CN102019002A (en) * | 2010-12-03 | 2011-04-20 | 中山哈特人工心脏实验室有限公司 | Implanted hollow minimal axial blood pump |
| CN103083742A (en) * | 2013-01-18 | 2013-05-08 | 江苏大学 | Low-blood-loss micro axial-flow type artificial heart |
| CN103877630A (en) * | 2014-04-15 | 2014-06-25 | 长治市久安人工心脏科技开发有限公司 | Heart auxiliary device of axial magnetic force unloading type axial flow pump |
| CN104826183A (en) * | 2015-05-26 | 2015-08-12 | 山东大学 | Blood flow guide device of centrifugal magnetic suspension artificial heart pump |
| CN105688298A (en) * | 2016-01-13 | 2016-06-22 | 山东大学 | Novel inner impeller axial flow blood pump |
| CN106512118A (en) * | 2016-11-02 | 2017-03-22 | 中南大学 | Totally-implanted magnetic liquid dual-suspension axial-flow blood pump |
| CN108404237A (en) * | 2017-02-09 | 2018-08-17 | 王改峰 | Impeller alternation rotary type suspension centrifugal blood pump |
| CN107261231A (en) * | 2017-07-25 | 2017-10-20 | 中国医学科学院阜外医院 | A kind of Axial feedback controls magnetic levitation axial flow blood pump |
| CN212651227U (en) * | 2020-07-02 | 2021-03-05 | 中国医学科学院阜外医院 | Magnetic suspension blood pump device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10434232B2 (en) | Blood pump with separate mixed-flow and axial-flow impeller stages and multi-stage stators | |
| US20120134832A1 (en) | Blood pump with splitter impeller blades and splitter stator vanes and related methods | |
| CN205163763U (en) | Axial compressor blood vessel pump of no bearing of rotor magnetism liquid suspension | |
| CN212651227U (en) | Magnetic suspension blood pump device | |
| AU2014306563A1 (en) | Impeller for axial flow pump | |
| CN105688298B (en) | New-type inner impeller axial blood pump | |
| CN103877630A (en) | Heart auxiliary device of axial magnetic force unloading type axial flow pump | |
| CN101513546B (en) | Hydrodynamic suspension bearing for artificial heart | |
| CN103083742A (en) | Low-blood-loss micro axial-flow type artificial heart | |
| CN104707194B (en) | A kind of implantable axial flow type blood pump supported based on blood flow dynamic pressure and Pivot | |
| CN104069555A (en) | Accessory axial-flow type blood pump for heart | |
| CN203842087U (en) | Axial magnetic force uninstalling type axial flow pump heart auxiliary device | |
| CN106512118A (en) | Totally-implanted magnetic liquid dual-suspension axial-flow blood pump | |
| CN204219479U (en) | A kind of magnetic liquid suspension formula axial-flow pump heart-assist device | |
| CN113952610A (en) | Magnetic suspension blood pump device | |
| CN112156255B (en) | Magnetic suspension centrifugal blood pump with integrated extracorporeal circulation magnetic wheel | |
| CN113730793A (en) | Implanted magnetic suspension axial flow blood pump with inlet and outlet guide vanes | |
| CN113769259A (en) | Extracorporeal circulation magnetic suspension axial flow blood pump | |
| US11471664B2 (en) | Blood pump device | |
| CN113750364A (en) | Implanted magnetic suspension axial flow blood pump | |
| CN116271504B (en) | Intervention type blood pump | |
| CN102705246B (en) | Impeller-suspended superminiature pump | |
| CN205055004U (en) | Adopt artifical blood pump of hydraulic suspension bearing | |
| CN113730792B (en) | Extracorporeal circulation magnetic suspension mixed flow blood pump | |
| CN112206409B (en) | Magnetic suspension mixed flow heart pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211207 |
|
| RJ01 | Rejection of invention patent application after publication |