CN107693869A - A kind of suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus - Google Patents
A kind of suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus Download PDFInfo
- Publication number
- CN107693869A CN107693869A CN201710923468.1A CN201710923468A CN107693869A CN 107693869 A CN107693869 A CN 107693869A CN 201710923468 A CN201710923468 A CN 201710923468A CN 107693869 A CN107693869 A CN 107693869A
- Authority
- CN
- China
- Prior art keywords
- boss
- shell
- cavity
- suspension
- thrombus
- 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.)
- Granted
Links
- 206010018910 Haemolysis Diseases 0.000 title claims abstract description 24
- 230000008588 hemolysis Effects 0.000 title claims abstract description 24
- 239000000725 suspension Substances 0.000 title claims abstract description 24
- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 21
- 208000002925 dental caries Diseases 0.000 claims description 5
- 239000008280 blood Substances 0.000 abstract description 16
- 210000004369 blood Anatomy 0.000 abstract description 16
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 7
- 230000023555 blood coagulation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010019280 Heart failures Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000010247 heart contraction Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
- 238000005406 washing 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
- A61M2210/125—Heart
Abstract
The invention provides a kind of suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus, including stationary parts and vane rotor, stationary parts is shell, pump inlet and pump discharge are offered on shell, vane rotor includes setting the boss of blade and cylinder inside the housing, and blade is along the circumferential direction uniformly arranged, and the through hole of cylinder is offered at the center of boss, circumferencial direction of the bottom of through hole along boss offers annular groove, and magnet is provided with annular groove；Pallet is provided with below shell, the first cavity and the second cavity are provided with pallet, magnet coil is provided with the first cavity, electromagnetic drive coil is provided with the second cavity.Impeller of the present invention uses suspension of five-freedom degree magnetic Centrifugal Pump Design, and the conventional centrifugal that compares impeller, vane rotor is completely in placement and pump housing, ensure that blood is run in loop, avoid lubricating, seal and blood pollution problem, while caloric value is small, it is low in energy consumption.
Description
Technical field
The invention belongs to field of medical device, more particularly, to a kind of suspension of five-freedom degree magnetic that can reduce haemolysis and thrombus
Receded disk impeller.
Background technology
The serious heart failure incidence of disease rises year by year, but is available for that the heart donor of transplanting is considerably less, and artificial heart can be solved effectively
The problem of certainly donor lacks, attended class from operation principle and be divided into TAH and ventricular assist device.Artificial heart is most important
It is impeller, the problem of facing maximum is haemolysis caused by heart pump operation process and blood coagulation problem.
The development experience of artificial heart beating pump, the rotary pump and magnetic suspension pump for having axle.Magnetic suspension pump can be solved effectively
Certainly destruction and sealing problem of the mechanical bearing to haemocyte, including magnetically levitated centrifugal pump and magnetic levitation axial flow pump.
The content of the invention
In view of this, the present invention is directed to propose a kind of centrifugal leaf of suspension of five-freedom degree magnetic that can reduce haemolysis and thrombus
Wheel, the impeller are designed using suspension of five-freedom degree magnetic, are kept suspending using solenoid controlled rotor part, are used electromagnetic drive
Coil is kept rotating by rotor, the conventional centrifugal that compares impeller, and rotor part is placed with pump housing, ensureing that blood exists completely
Run in loop, avoid lubricating, seal and blood pollution problem.The edge of rotor part is handled, and optimized
The distance between rotor and pump case, grinding of the solid to haemocyte is reduced, reduces the generation of haemolysis.It can increase in operation simultaneously
Big blood washes away to solid wall surface, reduces blood coagulation and the generation of thrombus.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus, including stationary parts and impeller turn
Son, the stationary parts are shell, and the shell offers pump inlet and pump discharge, and described vane rotor is outer including being arranged on
Blade, the boss and kuppe of cylinder inside shell, the blade are uniformly arranged along the circumferencial direction of boss, the boss
The through hole of cylinder is offered at center, the kuppe is arranged at the top of through hole, the edge of the kuppe and blade
Leading edge connection, the circumferencial direction of the bottom of the through hole along boss offers annular groove, is provided with the annular groove
Magnet；
Pallet is provided with below the shell, multiple first cavitys and multiple second cavitys are provided with the pallet,
First cavity is surrounded on outside the boss setting, and the second cavity is arranged at the lower section of boss, is provided with first cavity
Magnet coil, electromagnetic drive coil is provided with the second cavity.
Further, the distance between the outline of the vane rotor and shell are 0.2mm-10mm.
Further, the marginal portion of the boss and blade or all roundings or fillet.
Relative to prior art, the suspension of five-freedom degree magnetic receded disk impeller of the present invention that haemolysis and thrombus can be reduced
Have the advantage that：
(1) it is of the present invention to reduce haemolysis and the suspension of five-freedom degree magnetic receded disk impeller of thrombus uses five degree of freedom
Magnetically levitated centrifugal pump is designed, the conventional centrifugal that compares impeller, and vane rotor is placed with pump housing, ensureing that blood is sealing completely
Run in loop circuit, avoid lubricating, seal and blood pollution problem, while caloric value is small, it is low in energy consumption；
(2) the suspension of five-freedom degree magnetic receded disk impeller of the present invention that can reduce haemolysis and thrombus is to vane rotor
Edge is handled, and optimizes the distance between vane rotor and shell, is reduced grinding of the solid to haemocyte, is reduced haemolysis
Occur；
(3) the suspension of five-freedom degree magnetic receded disk impeller of the present invention that haemolysis and thrombus can be reduced in operation, blood
Liquid flows up from boss bottom along boss central through hole, reduces blood coagulation and the generation of thrombus.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is cuing open for the suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus described in the embodiment of the present invention
View；
Fig. 2 is the suspension of five-freedom degree magnetic receded disk impeller middle period that can reduce haemolysis and thrombus described in the embodiment of the present invention
Take turns the dimensional structure diagram of rotor；
Fig. 3 is the suspension of five-freedom degree magnetic receded disk impeller middle period that can reduce haemolysis and thrombus described in the embodiment of the present invention
Take turns the polycrystalline substance schematic diagram of rotor；
Fig. 4 is in the suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus described in the embodiment of the present invention
Blood flow schematic diagram.
Description of reference numerals：
1st, shell；2nd, pump inlet；3rd, pump discharge, 4, blade；5th, boss；6th, magnet；7th, magnet coil；8th, electromagnetic drive line
Circle；9th, through hole；10th, annular groove；11st, kuppe.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As Figure 1-3, a kind of suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus, including stationary part
Part and vane rotor, stationary parts are shell 1, and shell 1 offers pump inlet 2 and pump discharge 3, and vane rotor is outer including being arranged on
Blade 4, the boss 5 of cylinder inside shell 1, blade 4 are along the circumferential direction uniformly arranged, and cylinder is offered at the center of boss 5
The through hole 9 of shape.Mismatch to reduce the solid shape of inside and cause the grinding and destruction to blood, vane rotor also includes
Kuppe 11, kuppe 11 are arranged at the top of through hole 9, and the edge of kuppe 11 is connected with the leading edge of blade 4.Through hole 9
Circumferencial direction of the bottom along boss 5 offers annular groove 10, and magnet 6 is provided with annular groove 10, and magnet 6 is encapsulated in groove
It is interior, also cavity can be opened up inside boss 5, magnet 6 is encapsulated in cavity；
As shown in figure 1, the lower section of shell 1 is provided with pallet, multiple first cavitys and multiple second skies are provided with pallet
Chamber, the first cavity are surrounded on the outside of boss 5 and set, and the second cavity is arranged at the lower section of boss 5, is provided with first cavity
Magnet coil 7, electromagnetic drive coil 8 is provided with the second cavity.Magnet coil 7 is respectively arranged in each first cavity.
The magnetic suspension receded disk impeller uses bearing-free technology.After electrical power, magnet coil 7 produces under the function of current
Magnetisation field, under the influence of a magnetic field, vane rotor is stable to be suspended in shell 1.Electric current is by electromagnetic drive coil 8 simultaneously,
Under magnetic fields, vane rotor is in the internal rotation of shell 1.In the process of running, connect between vane rotor and shell 1 without machinery
Touch, avoid between solid components mutually frictional heat and haemocyte is damaged, reduce the generation of haemolysis.
, can be some by the outer surface of kuppe and inner surface setting in order to further reduce grinding of the solid components to blood
(1-11 bars) guiding gutter, specifically, the edge of guiding gutter and the surfaces externally and internally rounding off of kuppe 11, adjacent guiding gutter
Between form the round and smooth curved surface to concave.Vertical range between the minimum point of the curved surface and the peak of guiding gutter is 0.2-
10mm, width 0.3-11mm.4 round and smooth connection of blade in the end and impeller of guiding gutter, and guiding gutter is along where blade
Top from curve to the surfaces externally and internally of kuppe 11 extend.
The distance between outline and shell 1 of vane rotor are 0.2mm-10mm.The marginal portion of boss 5 is all
Rounding or fillet.To avoid grinding of the solid components to haemocyte, the blade 4 of the receded disk impeller and the edge of boss 5, part
Or it is whole do rounding or fillet processing, this reduces the probability of haemolysis generation to a certain extent.Meanwhile the vane rotor part
Larger apart from the distance between pump case 1, distance can allow blood effectively by further reducing between 0.2mm-10mm
The generation of haemolysis.
As shown in figure 4, in actual motion, vane rotor is protected in the presence of magnet coil 7 and electromagnetic drive coil 8
Suspension and rotation in shell 1 are held, when blood is flowed into shell 1 from import 2, the centrifugal force caused by rotor rotates,
Blood flow direction outlet 3, completes blood flow process.In this process, blood has upward buoyance lift to the rotor part of rotation
Power acts on, and due to there is the through hole 9 of cylinder among boss 5, through hole 9 of the blood from the bottom of boss 5 along the center of boss 5 is to upstream
It is dynamic, increase blood washing away to the through hole 9 of the bottom of boss 5 and the central cylindrical of boss 5, avoid blood from being trapped in the bottom of boss 5,
Reduce blood coagulation and the formation of thrombus.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (3)
- A kind of 1. suspension of five-freedom degree magnetic receded disk impeller that can reduce haemolysis and thrombus, it is characterised in that：The impeller includes quiet Stop part and vane rotor, the stationary parts are shell (1), and the shell (1) offers pump inlet (2) and pump discharge (3), Described vane rotor includes being arranged on the internal blade (4) of shell (1), the boss (5) and kuppe (11) of cylinder, described Circumferencial direction of the blade (4) along boss (5) is uniformly arranged, and the through hole (9) of cylinder is offered at the center of the boss (5), The kuppe (11) is arranged at the top of through hole (9), and the edge of the kuppe (11) is connected with the leading edge of blade (4), Circumferencial direction of the bottom of the through hole (9) along boss (5) offers annular groove (10), is installed in the annular groove (10) There is magnet (6)；Pallet is provided with below the shell (1), multiple first cavitys and multiple second cavitys, institute are provided with the pallet State the first cavity and be surrounded on the setting of boss (5) outside, the second cavity is arranged at the lower section of boss (5), set in first cavity Magnet coil (7) is equipped with, electromagnetic drive coil (8) is provided with the second cavity.
- 2. the suspension of five-freedom degree magnetic receded disk impeller according to claim 1 that can reduce haemolysis and thrombus, its feature exist In：The distance between outline and shell (1) of the vane rotor are 0.2mm-10mm.
- 3. the suspension of five-freedom degree magnetic receded disk impeller according to claim 1 or 2 that haemolysis and thrombus can be reduced, its feature It is：The boss (5) and marginal portion or all roundings or the fillet of blade (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923468.1A CN107693869B (en) | 2017-09-30 | 2017-09-30 | Five-degree-of-freedom magnetic suspension centrifugal impeller capable of reducing hemolysis and thrombus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923468.1A CN107693869B (en) | 2017-09-30 | 2017-09-30 | Five-degree-of-freedom magnetic suspension centrifugal impeller capable of reducing hemolysis and thrombus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107693869A true CN107693869A (en) | 2018-02-16 |
| CN107693869B CN107693869B (en) | 2024-04-02 |
Family
ID=61184461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710923468.1A Active CN107693869B (en) | 2017-09-30 | 2017-09-30 | Five-degree-of-freedom magnetic suspension centrifugal impeller capable of reducing hemolysis and thrombus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107693869B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108785770A (en) * | 2018-04-18 | 2018-11-13 | 清华大学天津高端装备研究院 | A kind of external blood pump that can reduce haemolysis |
| CN110064084A (en) * | 2019-04-03 | 2019-07-30 | 湖州露湖鄱生物科技有限公司 | A kind of magnetic suspension centrifugal blood pump |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| CN112516454A (en) * | 2020-11-26 | 2021-03-19 | 深圳汉诺医疗科技有限公司 | Magnetic suspension artificial heart pump |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | 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 |
| CN115887908A (en) * | 2022-10-20 | 2023-04-04 | 北京航空航天大学 | Artificial heart and blood pump |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | 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 |
| US11964145B2 (en) | 2020-07-13 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | 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 |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11229784B2 (en) | 2018-02-01 | 2022-01-25 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
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| CN110064084A (en) * | 2019-04-03 | 2019-07-30 | 湖州露湖鄱生物科技有限公司 | A kind of magnetic suspension centrifugal blood pump |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | 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 |
| US11964145B2 (en) | 2020-07-13 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| CN112516454A (en) * | 2020-11-26 | 2021-03-19 | 深圳汉诺医疗科技有限公司 | Magnetic suspension artificial heart pump |
| CN112516454B (en) * | 2020-11-26 | 2024-04-09 | 深圳汉诺医疗科技有限公司 | Magnetic suspension artificial heart pump |
| CN115887908A (en) * | 2022-10-20 | 2023-04-04 | 北京航空航天大学 | Artificial heart and blood pump |
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|---|---|
| CN107693869B (en) | 2024-04-02 |
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