CN108404237A - Impeller alternation rotary type suspension centrifugal blood pump - Google Patents
Impeller alternation rotary type suspension centrifugal blood pump Download PDFInfo
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- CN108404237A CN108404237A CN201710068553.4A CN201710068553A CN108404237A CN 108404237 A CN108404237 A CN 108404237A CN 201710068553 A CN201710068553 A CN 201710068553A CN 108404237 A CN108404237 A CN 108404237A
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- impeller
- centrifugal
- pump
- suspension
- axial
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Classifications
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- 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
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/861—Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body
- A61M60/863—Apex rings
-
- 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
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
- A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular 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
- A61M60/20—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
- A61M60/226—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 radial components
- A61M60/232—Centrifugal 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
- A61M60/422—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
- A61M60/818—Bearings
- A61M60/82—Magnetic bearings
-
- 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
- A61M2206/00—Characteristics of a physical parameter; associated device therefor
- A61M2206/10—Flow characteristics
- A61M2206/16—Rotating swirling helical flow, e.g. by tangential inflows
Abstract
A kind of impeller alternation rotary type suspension centrifugal blood pump, is made of symmetrical structure centrifugal impeller (29) and symmetrical structure centrifugal pump shell (27)；Centrifugal impeller (29) can generate identical centrifugation blood flow according to positive and negative direction rotation and export.Impeller cylinder (23) outer wall is blood flow secondary channels (22) with pump barrel (26) inner wall gap, and the cavity in impeller cylinder inner wall (26) is blood flow sprue (2)；Axial control magnet (5) forward and backward movement can be pushed when axial control winding (6) feed；Preceding rotor suspension magnet ring (3) and rear rotor suspension magnet ring (21) form forward and backward permanent magnetic radial suspension bearing with front stator suspension magnet ring (4) and rear stator suspension magnet ring (9)；The outer plate-like driving motor stator (11) in edge driving motor rotor magnet (16) and centrifugal pump shell front and back walls (10), (14), (12) are corresponding in impeller blade (17).Pump barrel outer wall (7) rear end wraps suture ring (20).
Description
Technical field：
A kind of impeller alternation rotary type suspension the present invention relates to biomedical engineering field for heart assistance centrifuges blood
Pump, by magnetic suspension system, forward and backward driving motor disc type stator, using reference plane as the centrifugal impeller of symmetrical structure and symmetrically from
Heart pump shell forms；Centrifugal impeller can generate identical centrifugation blood flow according to rotating clockwise or counterclockwise.Centrifugal impeller revolves
Turn direction periodically-varied, blood contacting surfaces are washed away by symmetrical blood flow, can reduce " dead zone " of slow blood flow in pump, more
Prevent thrombosis well.So that centrifugal impeller is in suspended state using magnetic levitation technology, without mechanical bearing wear, blood can be extended
The working life of pump, further increases in blood pump and washes away, and mitigates the destruction to blood component.
Background technology：
Centrifugal blood pump is one kind of implantable cardiac auxiliary device, and clinical treatment advanced heart failure achieves good result.But
It using such device will appear the severe complications such as thromboembolism, bleeding for a long time, be hinder this technological progress at present important
It is difficult.Overcome these difficulties that need to be further improved and optimize the structure of centrifugal blood pump.Centrifugal pump basic structure be centrifugal pump shell and
The centrifugal impeller being placed in centrifugal pump shell chamber.The periphery position of centrifugal pump shell is arranged pump discharge, centrally disposed pump intake, liquid stream by
Pump intake enters in centrifugal pump shell, and centrifugal impeller high speed rotation drives liquid to form rotating flow, under the influence of centrifugal force liquid
It is flowed out from pump discharge.In general, the centrifugal impeller of centrifugal blood pump, centrifugal pump shell and pump discharge are all made of asymmetrical design, pump discharge
It is connected with tangential direction and centrifugal pump shell chamber, the area of passage of outlet gradually expands.Such design can be sharp at pump discharge
Output pressure is further increased with the tangential momentum of rotation blood flow and the diffusion process in runner, is conducive to improve centrifugal pump
Energy conversion efficiency.But this Structural Design Requirement centrifugal impeller must be rotated according to specific direction, if impeller reversely rotates
Working efficiency degradation can then be caused.
The structure design of centrifugal blood pump has specific characteristics, with drive other liquid centrifugal pump Structural Design Requirement it is incomplete
Unanimously.For example centrifugal pump structure must have blood compatibility as good as possible, that is, require good antithrombotic and as light as possible
The characteristic of micro- blood constituent damage.The impeller and centrifugal pump shell cavity wall of centrifugal blood pump are the surfaces being in direct contact with blood,
Make these factor activators since foreign matter is contacted with the active factors in blood, blood clotting can be caused and is attached to these foreign matter tables
Face forms thrombus.Thrombus usually is more readily formed in " dead zone " of slow blood flow, is easily formed destruction and the damage of blood constituent
Wound.Thrombosis and attachment can be prevented by removing liquid stream slow " dead zone " and being washed away to the good blood flow on foreign matter surface, be reduced
The broken ring of blood constituent.It can be seen that the structure design of centrifugal blood pump should prevent blood flow relatively slow " dead zone " as far as possible
It is formed.
Using traditional centrifugal pump structure, the rotation of centrifugal impeller one direction makes the flow field form in centrifugal pump shell fix, and holds
It easily forms some blood flows and washes away undesirable region, such as the corresponding region of low pressure surface of impeller blade, pump interior each surface blood flow
Wash away uneven, these features are unfavorable for preventing from pumping interior thrombosis.In order to overcome this disadvantage, the HeartMate in the U.S.
III implanted centrifugal blood pumps use the driving strategy of periodically-varied wheel speed, and the flow field form of centrifugal pump shell intracavitary can
Change under different rotating speeds, the scouring effect of centrifugal pump shell intracavitary and each surface of impeller can be improved to a certain extent in this way.
But this driving strategy still cannot make each surface in centrifugal pump shell wait until impartial wash away.Imagining centrifugal impeller can be periodical
It is alternately rotated clockwise and anticlockwise, then, blood flow direction of rotation is by periodic inversion, centrifugal impeller and centrifugation in centrifugal pump shell
Each surface can be obtained the symmetrical of blood flow and wash away in pump case, can remove the liquid stream " dead zone " of centrifugal pump shell intracavitary to the maximum extent,
Improve the antithrombic properties of blood pump.But this type of drive requires the structures such as centrifugal pump shell and centrifugal impeller to use symmetric design,
To ensure that impeller fluid output characteristics when two opposite directions rotate is identical.The present invention proposes that a kind of impeller alternation is rotary
Suspended centrifugal blood pump is, it can be achieved that above-mentioned working mechanism.
It is another key technology to support the bearing of centrifugal impeller.Sliding bearing can be used as the support construction of centrifugal impeller, but
Its is maximum the disadvantage is that friction, abrasion and the local temperature of sliding contact surface increase, and can also form blood around mechanical bearing
Stream washes away defective region, is easy to form thrombus.So that rotary blade is in suspended state at work using magnetic force control, removes machine
Tool abrasion makes blood pump working life further extend, and no local friction's heat production and local temperature rise are more advantageous to anti-tampon shape
At these improvement can further improve the performance of centrifugal blood pump.
Invention content：
In order to reduce complication, improve the overall performance of implantable cardiac auxiliary device, the present invention provides a kind of impeller friendship
Become rotary suspended centrifugal blood pump.Pump case, pump intake, pump discharge and the centrifugal impeller of the centrifugal blood pump use symmetrical structure；
Centrifugal impeller is supported by magnetic suspension system, and radial position is restricted using Permanent-magnet bearing；Axial position is controlled by calutron, diameter
The 5DOF constraint for jointly controlling achievable centrifugal impeller to permanent magnetism and axial electromagnetic bearings, maintains centrifugal impeller to be in inorganic
The full suspended state of tool contact.Driving motor stator is disc type, and two disk type electric machine stators drive centrifugation leaf by rotating excitation field
Wheel periodically rotates clockwise or counterclockwise, and then drives blood flow rotation, by the centrifugation power drive blood flow of rotating flow by
Pump discharge flows out.
The technical solution adopted by the present invention to solve the technical problems is：
Impeller alternation rotary type suspension centrifugal blood pump is by driving motor, centrifugal pump shell, centrifugal impeller and centrifugal impeller magnetcisuspension
Floating system composition；Centrifugal pump shell is divided into the blade cavity of the centrifugation pump barrel and rear end of front end, and blade cavity is cylindrical shape, in blade cavity
The pump discharge vertical with wall surface tangent line and symmetrical relative to reference plane is set in circular cylindrical circumferential.The stator of driving motor is disc type
Stator, two panels disc type stator are located at front and rear ends of blade cavity and corresponding with the rotor permanent magnet in impeller blade.From
The impeller cylinder of lobus cardiacus wheel is located in centrifugation pump barrel, adheres to impeller blade in the tail end of impeller cylinder, impeller blade is four, along impeller
The radial radiation shape of cylinder is symmetrically arranged, and is located in blade cavity.Forward and backward two groups of permanent magnetic radial bearings are set, respectively by forward and backward stator
Suspension magnet ring and forward and backward rotor suspension magnet ring composition；Forward and backward stator suspension magnet ring surrounds centrifugal pump drum outer wall, forward and backward turn
Sub- suspension magnet ring is embedded in the impeller cylinder of centrifugal impeller；Levitation gap is set between impeller drum outer wall and centrifugation pump barrel inner wall,
It is connected with blade cavity, forms blood flow secondary channels.Forward and backward stator suspension magnet ring is axial fill with forward and backward rotor suspension magnet ring
Magnetic and axial length is equal, position correspond to, and polarity is collectively aligned, the magnetic repulsion thus generated between stator and rotor suspension magnet ring
Power can limit impeller radial displacement.Impeller cylinder inner wall forms tubular conduit, is connected with blade cavity, is that blood flow enters blade cavity
Blood flow sprue.The front opening for centrifuging pump barrel is pump intake, is connected with blood flow sprue and blood flow secondary channels.Blood pump works
When major part blood flow guided by sprue, small part blood flow is guided by secondary channels to be entered in blade cavity by pump intake, in centrifugal force
Under the action of from pump discharge flow out；Flow through blood flow sprue and blood flow secondary channels blood flow can to the inside and outside wall surface of impeller cylinder and
The internal face for centrifuging pump barrel carries out continuous erosion, prevents thrombosis and attachment.The cylinder of axial charging is also embedded in impeller cylinder
Shape axially controls permanent magnet, between forward and backward rotor suspension magnet ring；In axial control permanent magnet midpoint and axial control coil
Point position corresponds to.The axial control permanent magnet embedded in impeller cylinder and forward and backward rotor suspension magnet ring are strictly concentric with impeller cylinder
Coaxially.
The centrally disposed water conservancy diversion centrum of rear wall of blade cavity can make sprue enter the axial blood flow in blade cavity to periphery point
It dissipates, forms rotating flow, prevent vortex from being formed.It is cavity in water conservancy diversion centrum, Hall sensor, the sensor is set in the cavity
The axial position for determining centrifugal impeller can be measured by the change of magnetic field strength to rear rotor suspension magnet ring, for suspension feedback control
Device provides position feed back signal.The outer wall for centrifuging pump barrel winds Circular Winding, forms axial control coil, is located at forward and backward stator
It is corresponding with the axial control permanent magnetism body position in impeller cylinder between suspension magnet ring.It is axial under the control of suspension feedback controller
Current strength and direction change in real time in control coil, generate axial magnetic field and control impeller axial position；Forward and backward radial direction forever
Under the cooperation of magnetic bearing, centrifugal impeller is positively retained at full suspended state.
Due to centrifugal impeller, centrifugal pump shell, pump intake and pump discharge be with the left and right symmetrical structure of reference plane, so from
Lobus cardiacus wheel periodically rotates clockwise or counterclockwise can drive blood to rotate at the same rate, and the centrifugal force of rotating flow can
Blood is driven to be flowed out from pump discharge.
Description of the drawings
Fig. 1 is sectional view of the impeller alternation rotary type suspension centrifugal blood pump of the present invention along reference plane, and Fig. 2 is reference plane and outer
Schematic diagram is seen, Fig. 3 is the appearance diagram of the present invention, and Fig. 4, Fig. 5 are the appearance diagrams of centrifugal impeller of the present invention.In Fig. 1, figure
2, in Fig. 3,1. pump intakes, 2. sprues, rotor suspension magnet ring before 3., 4. front stator suspension magnet rings, 5. axial control magnets, 6.
Axial control winding, 7. pump barrel outer walls, 8. pump barrel inner walls, stator suspension magnet ring after 9., 10. blade cavity antethecas drive electricity before 11.
Machine disc type stator drives electric disc formula stator, 13. pump discharges, 14. blade cavity rear walls, 15. water conservancy diversion centrums, 16. drivings after 12.
Rotor magnet, 17. impeller blades, 18. Hall sensors, 19. blade cavities, 20. suture rings, rotor suspension magnet ring after 21.,
22. secondary channels, 23. impeller cylinders, 24. impeller cylinder inner walls, 25. impeller drum outer walls, 26. pump barrels, 27. centrifugal pump shells, 28. butt ends
Face, 29. centrifugal impellers, 30. reference planes, 31. signals and electric source line interface
Present invention will be further explained below with reference to the attached drawings and examples：
In Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, centrifugal impeller (29) by front end impeller cylinder (23) and tail end adhere to leaf
Impeller blade (17) forms, and impeller cylinder (23) is the tubular cavity wrapped by impeller drum outer wall (25) and impeller cylinder inner wall (24), empty
Intracavitary is embedded with the axial control magnet (5) of tubular；Impeller blade (17) is dovetail shaped, totally 4, is attached to the tail of impeller cylinder
End, and along the radial arrangement in axle center, driving motor rotor magnet (16) centrifugal pump shells of the interior embedding axial charging of impeller blade
(27) it is made of the blade cavity (11) of the pump barrel of front end (26) and tail end, the pump barrel (26) of centrifugal pump shell (27) front end is by pumping
The tubular cavity of drum outer wall (7) and pump barrel inner wall (8) wrapping, the forward and backward stator suspension magnet ring (4) of the interior embedding of cavity and (9) and axis
To control winding (6)；Axial control winding (6) twines in concentric fashion between forward and backward stator suspension magnet ring (4) and (9)
It is wound on pump barrel inner wall (8) outside.Impeller cylinder (23) and impeller blade (17) are located in pump barrel (26) and centrifugal pump shell (27), together
Heart arranged in co-axial alignment；Gap between the outside wall surface and the internal face of pump barrel (26) of impeller cylinder (23) forms the secondary channels (22) of blood flow,
Cavity in impeller cylinder inner wall (26) forms blood flow sprue (2)；Axial control magnet (5) is divided into forward and backward two sections, two segment length
Equal, equal axial charging and being docked with like pole end to form docking end face (28), and the position of docking end face (28) corresponds to axis
To the intermediate point of control winding；Can be generated when axial control winding (6) are fed axial magnetic field push axial control magnet (5) to
It is preceding or move backward.
Preceding rotor suspension magnet ring (3) and rear rotor suspension magnet ring (21) are inlaid in impeller cylinder (23), respectively with pump barrel
(26) the front stator suspension magnet ring (4) and rear stator suspension magnet ring (9) position in are corresponding and strictly concentric with pump barrel；Preceding rotor is outstanding
Floating magnet ring (3), rear rotor suspension magnet ring (21), front stator suspension magnet ring (4) and rear stator suspension magnet ring (9) are axial fill
Magnetic, axial length is equal and pole arrangement direction is identical, and impeller cylinder (23) and leaf are limited by magnetic repulsion between each suspension magnet ring
The radial displacement of impeller blade (17) forms forward and backward permanent magnetic radial suspension bearing；Driving motor rotor is inlayed in impeller blade (17)
Magnet (16), the magnet axial magnetize and with the outer plate-like driving motor stator (11) in centrifugal pump shell front and back walls (10), (14),
(12) position corresponds to, and rotating excitation field is generated when feed and pushes centrifugal impeller rotation.Axial control winding (6), front stator suspension magnetic
There are the pump barrel outer wall (7) that sealing wraps, pump barrel outer wall (7) rear end wrapping seam in the outer surface of ring (4) and rear stator suspension magnet ring (9)
Cyclization (20).When being implanted into human body, pump barrel (26) is inserted by apex of the heart notch in left ventricular cavity, and suture ring (20) is sewn to
Apical myocardium surface, centrifugal pump shell (27) are placed in cavum pericardiale, and outlet passes through artificial blood vessel and the identical unicom of aorta.
Claims (17)
1. a kind of impeller alternation rotary type suspension centrifugal blood pump for heart assistance, by centrifugal impeller, centrifugal pump shell, centrifugal pump
Entrance, outlet of centrifugal pump, forward and backward driving motor disc type stator and magnetic suspension system composition；The impeller alternation rotary type suspension
Centrifugal blood pump has the symmetrical profile of a reference plane, and centrifugal impeller, centrifugal pump shell, centrifugal pump inlet and outlet of centrifugal pump are with benchmark
It is left and right symmetrical subject to face, it is rotated according to alternation clockwise and counterclockwise when centrifugal impeller works；Centrifugal impeller is by magnetic suspension system
System control is in full suspended state；The rotating excitation field driving centrifugal impeller rotation that forward and backward driving motor disc type stator generates.
2. impeller alternation rotary type suspension centrifugal blood pump according to claim 1, the centrifugal impeller of symmetrical structure are controlling
Under to rotate clockwise and counterclockwise, change centrifugal impeller direction of rotation can be periodically or non-periodically, can also
According to treatment it needs to be determined that.
3. impeller alternation rotary type suspension centrifugal blood pump according to claim 1, centrifugal pump shell is by the pump barrel of front end with after
The blade cavity at end forms, and centrifugal impeller is made of the impeller cylinder of front end and the impeller blade of rear end, and impeller cylinder is located at centrifugal pump shell
Pump barrel in, impeller blade is located in the blade cavity of centrifugal pump shell, and centrifugal pump shell and centrifugal impeller are coaxially arranged concentrically.
4. impeller alternation rotary type suspension centrifugal blood pump according to claim 1, the centrifugation leaf being set in centrifugal pump shell
Wheel realizes five-degree magnetic suspension under the control of magnetcisuspension system, and the magnetic suspension system is by forward and backward radial magnetic bearing and axial direction
Electromagnetic control system forms.
5. centrifugal impeller according to claim 3, impeller cylinder is the tubulose wrapped by impeller drum outer wall and impeller cylinder inner wall
Cavity is embedded with the axial control magnet of tubular in cavity；Impeller blade is dovetail shaped, totally 4, is attached to the tail of impeller cylinder
End, and arranged along the radial radiation of impeller cylinder centered on impeller cylinder axle center, and it is symmetrical with symmetrical vertical section；Impeller blade
The driving motor rotor magnet of interior embedding axial charging.
6. centrifugal pump shell according to claim 3, the pump barrel of centrifugal pump shell is wrapped by pump barrel outer wall and pump barrel inner wall
Tubular cavity, the forward and backward stator suspension magnet ring of the interior embedding of cavity and axial control winding；Axial control winding is located at forward and backward stator
Between suspension magnet ring, and it is wrapped in concentric fashion outside pump barrel inner wall.
7. forward and backward radial magnetic bearing according to claim 4, preceding radial magnetic bearing is suspended magnet ring by front stator
It is formed with preceding rotor suspension magnet ring, rear radial magnetic bearing is made of rear stator suspension magnet ring and rear rotor suspension magnet ring；Before,
Stator suspension magnet ring and the forward and backward equal axial charging of rotor suspension magnet ring afterwards；Rotor suspension magnet ring before the embedding of impeller cylinder front end, pump barrel
Front end embed front stator suspension magnet ring, preceding rotor suspension magnet ring and front stator suspension magnet ring position are opposite, axial length it is equal and
Pole arrangement direction is identical, magnetic suspension bearing before being formed；Rotor suspension magnet ring after the embedding of impeller tube rear end, after the embedding of pump barrel rear end
Stator suspension magnet ring, rear rotor suspension magnet ring and rear stator suspension magnet ring position are opposite, and axial length is equal and pole arrangement side
To identical, radial magnetic bearing after formation.
8. impeller alternation rotary type suspension centrifugal blood pump according to claim 1, driving motor rotor magnet axial charging,
It is embedded in centrifugal impellers blades, it is corresponding with forward and backward driving motor disc type position of stator.
9. impeller alternation rotary type suspension centrifugal blood pump according to claim 1, the outside wall surface of impeller cylinder and pump barrel it is interior
Levitation gap between wall surface forms blood flow secondary channels, and the cavity in impeller cylinder inner wall forms blood flow sprue.
10. blade cavity according to claim 3, in the centrally disposed water conservancy diversion centrum of the rear wall of the blade cavity, water conservancy diversion centrum
Center is cavity, and Hall sensor is arranged in the cavity of water conservancy diversion centrum.
11. axial magnetic control system according to claim 4, axial direction is embedded in the impeller drum outer wall in impeller cylinder stage casing
The axial control permanent magnet to magnetize, the axial control winding of the interior embedding of pump barrel outer wall in pump barrel stage casing, position controls permanent magnetism with axial
Body corresponds to；The coil axle center of axial control winding and pump barrel are coaxial, and space generates axial magnetic field in pump barrel when feed.
12. axial control permanent magnet according to claim 11, the axial permanent magnet that controls is divided into forward and backward two sections, two sections long
Spend equal, equal axial charging and being docked with like pole end to form docking end face, and the position for docking end face corresponds to axial control
The intermediate point of winding.
13. axial magnetic control system according to claim 4, the Hall sensor being arranged in water conservancy diversion centrum cavity can
The changes of magnetic field of rotor suspension magnet ring after detection, output and the relevant electric signal of centrifugal impeller axial position, pass through connecting wire
It is transported to suspension feedback controller.
14. suspension feedback controller, the suspension feedback control is arranged in axial magnetic control system according to claim 4
The electric signal that device processed is exported according to Hall sensor carries out the feed direction of axial control winding and intensity by connecting wire
Control.
15. the front opening of impeller alternation rotary type suspension centrifugal blood pump according to claim 1, pump barrel is pump intake,
Pump discharge is arranged in blade cavity periphery, and pump intake is connected by sprue and secondary channels with blade cavity and pump discharge, and guiding is pumped into
The blood of mouth flows into pump case blade cavity.
16. preceding driving is arranged in the antetheca of impeller alternation rotary type suspension centrifugal blood pump according to claim 1, blade cavity outside
Motor disc type stator；The rear wall peripheral hardware of blade cavity postpones driving motor disc type stator.
17. impeller alternation rotary type suspension centrifugal blood pump according to claim 1, forward and backward driving motor disc type stator are each
The feed sequence of winding is changed by control program timing, and centrifugal impeller changes direction in the driving periodical of stator field, point
It is not rotated according to both direction clockwise and anticlockwise.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710068553.4A CN108404237A (en) | 2017-02-09 | 2017-02-09 | Impeller alternation rotary type suspension centrifugal blood pump |
| PCT/CN2017/097961 WO2018145434A1 (en) | 2017-02-09 | 2017-08-18 | Suspended centrifugal blood pump having alternating rotating impellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710068553.4A CN108404237A (en) | 2017-02-09 | 2017-02-09 | Impeller alternation rotary type suspension centrifugal blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108404237A true CN108404237A (en) | 2018-08-17 |
Family
ID=63107904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710068553.4A Pending CN108404237A (en) | 2017-02-09 | 2017-02-09 | Impeller alternation rotary type suspension centrifugal blood pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108404237A (en) |
| WO (1) | WO2018145434A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113750364A (en) * | 2021-09-24 | 2021-12-07 | 北京航空航天大学 | Implanted magnetic suspension axial flow blood pump |
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| 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 |
| EP3996797A4 (en) | 2019-07-12 | 2023-08-02 | Shifamed Holdings, LLC | Intravascular blood pumps and methods of manufacture and use |
| 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 |
| CN113730792B (en) * | 2021-09-24 | 2022-09-27 | 北京航空航天大学 | Extracorporeal circulation magnetic suspension mixed flow blood pump |
| CN113819072B (en) * | 2021-10-18 | 2023-08-22 | 杭州旋速科技有限公司 | Turbofan magnetic suspension pipeline fan |
| CN114593085B (en) * | 2022-02-25 | 2024-03-15 | 北京航天动力研究所 | Long-life temperature control pump system adopting space suspension bearing |
| CN116780817A (en) * | 2023-08-21 | 2023-09-19 | 航天泰心科技有限公司 | Micro motor for interventional catheter pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206789C (en) * | 2002-05-31 | 2005-06-15 | 沈阳工业大学 | Axial controllable magnetic suspension permanent magnet disk type blood pump motor |
| AU2007207782B2 (en) * | 2006-01-13 | 2012-09-27 | Heartware, Inc. | Rotary blood pump |
| JP5562954B2 (en) * | 2008-08-08 | 2014-07-30 | キャロン カーディオ テクノロジー リミテッド | Cardiac assist device |
| CN101732769B (en) * | 2010-01-26 | 2011-10-05 | 浙江大学 | Implantable blood pump adopting driven suspension bearing |
| CN103585683B (en) * | 2013-10-23 | 2015-09-23 | 北京航天控制仪器研究所 | A kind of implantable left ventricular assist system |
-
2017
- 2017-02-09 CN CN201710068553.4A patent/CN108404237A/en active Pending
- 2017-08-18 WO PCT/CN2017/097961 patent/WO2018145434A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113750364A (en) * | 2021-09-24 | 2021-12-07 | 北京航空航天大学 | Implanted magnetic suspension axial flow blood pump |
Also Published As
| Publication number | Publication date |
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| WO2018145434A1 (en) | 2018-08-16 |
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Application publication date: 20180817 |