CN107349484A - Suspension rotor blood pump and pumping system - Google Patents
Suspension rotor blood pump and pumping system Download PDFInfo
- Publication number
- CN107349484A CN107349484A CN201710733173.8A CN201710733173A CN107349484A CN 107349484 A CN107349484 A CN 107349484A CN 201710733173 A CN201710733173 A CN 201710733173A CN 107349484 A CN107349484 A CN 107349484A
- Authority
- CN
- China
- Prior art keywords
- pump case
- suspension rotor
- inner supporting
- axle journal
- rotor
- 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
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
- A61M60/40—Details relating to driving
Abstract
The invention provides a kind of suspension rotor blood pump and pumping system, it is related to artificial heart field.The suspension rotor blood pump includes pump case, suspension rotor and inner supporting type axle journal；The suspension rotor and the inner supporting type axle journal are located inside the pump case；One end of the pump case is provided with import, and the inner supporting type axle journal is fixed on the other end of the pump case；The suspension rotor includes matrix, blade and PM rotor；Matrix is set in outside the inner supporting type axle journal, and leaves gap；The blade is fixed on described matrix close to the inlet side；The PM rotor is inlaid in described matrix；The pump case be additionally provided with the blade for collect blood and with the pumping chamber of ft connection；The week side of boss of the pump case is fixed with delineation corresponding with the PM rotor.The pumping system has used suspension rotor blood pump as described above.The present invention solves existing blood pump, and easily axial leakage produces the technical problem that blood pollutes.
Description
Technical field
The present invention relates to artificial heart technical field, more particularly, to a kind of suspension rotor blood pump and pumping system.
Background technology
Heart pump is the device of the part or all of replacement cardiac pumping function of the serious heart failure patient of co-treatment, split
Interior transplanting and external two kinds of short-period used, at present generally use motor and the design of pump head one.
Existing heart pump is designed to realize the basic function of heart pump, but due to most of motors and pump head one
Body, be directly driven, especially for the heart pump of external short-period used, can only integrally be discarded after use, economy compared with
Difference.Moreover, mechanical axis transmission is likely to cause liquid axial direction seepage, blood is caused to pollute.
Based on this, the invention provides a kind of suspension rotor blood pump and pumping system to solve above-mentioned technical problem.
The content of the invention
It is an object of the invention to provide a kind of suspension rotor blood pump, to solve the easily axial leakage of existing blood pump
Produce the technical problem of blood pollution.
The present invention also aims to provide a kind of pumping system, for solving above-mentioned technical problem.
Based on above-mentioned first purpose, the invention provides a kind of suspension rotor blood pump, including pump case, suspension rotor and interior
Brace type axle journal；
The suspension rotor and the inner supporting type axle journal are located inside the pump case；
One end of the pump case is provided with import, and the inner supporting type axle journal is fixed on the other end of the pump case；
The suspension rotor includes matrix, blade and PM rotor；
Described matrix is set in outside the inner supporting type axle journal, and leaves gap；
The blade is fixed on described matrix close to the inlet side；The PM rotor is inlaid in described matrix
It is interior；
The pump case be additionally provided with the blade for collect blood and with the pumping chamber of ft connection；
The week side of boss of the pump case is fixed with delineation corresponding with the PM rotor.
Optionally, the inner supporting type axle journal and the week side of boss of described matrix inserting part are provided with helicla flute.
Optionally, the inner supporting type axle journal inserts with the pump case interference.
Optionally, the week side of boss of the inner supporting type axle journal at the inserting with the pump case is provided with a circle seal groove,
Sealing ring is provided with the seal groove.
Optionally, the sealing ring uses rubber seal.
Optionally, the inserting end of the inner supporting type axle journal and the pump case is additionally provided with fastening bolt, the fastening spiral shell
Bolt is additionally provided with pad with the pump case part.
Optionally, the PM rotor is completely encapsulated in described matrix.
Optionally, also there is gap between described matrix and the pump case, and more than the inner supporting type axle journal with it is described
Gap between matrix.
Optionally, the one end of the pump case away from the inner supporting type axle journal is provided with the connecting portion of tubulose, the connection
The one end in portion connects with the pump case, and the other end forms the import.
Based on above-mentioned second purpose, the invention provides a kind of pumping system, the pumping system has used as described above
Suspension rotor blood pump.
The suspension rotor blood pump provided by the invention, including pump case, suspension rotor, pumping chamber, inner supporting type axle journal
Deng wherein pump case includes pump case bottom and pump case top, and suspension rotor includes matrix, blade, PM rotor.PM rotor
It is embedded in suspension rotor, completely isolated state is in fluid.Inner supporting type axle journal is fixed together with pump case bottom.Interior branch
The same central axis of inwall of the outer wall and pump case of support formula axle journal.The central axis is also the axis of suspension rotor blood pump.Suspend
There is gap between the inwall of rotor and the outer wall of inner supporting type axle journal, they collectively form the sliding bearing of blood pump rotary motion
Friction pair.When suspension rotor rotates, relative motion is formed between the inwall of suspension rotor and the outer wall of inner supporting type axle journal,
Fluid is pressed into gap, forms oil lubrication so that have fluid lubrication between inner supporting type axle journal and the inwall of suspension rotor
Condition, so as to improve the Frotteurism of suspension rotor and limit the radial motion of suspension rotor.It is rotated using such as motor
Driving principle, by the field drives between stator and PM rotor.Meanwhile during suspension rotor rotation, band movable vane piece rotates, warp
Cross import blood is sucked and pressurizeed, be sent into pumping chamber and be pumped to outside.
The suspension rotor blood pump provided by the invention, change existing by power transmission shaft direct-drive driving impeller
The mode of rotation, avoid using the issuable liquid axial direction seepage of power transmission shaft direct-drive, normally transported in guarantee blood pump
While row, the pollution to blood is avoided.
Meanwhile there is hydrodynamic lubrication between suspension rotor and inner support axle journal, easily start, rotate it is smooth but limit it is outstanding
The radial motion of floating rotor.It is additionally, since and employs inner support, the mode of external magnetic field driving, than Mechanical Driven or outside branch
Support needs smaller driving force, it is necessary to which less acting can be such that impeller quickly starts and continue to rotate.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of suspension rotor blood pump provided in an embodiment of the present invention；
Fig. 2 is the sectional view of the suspension rotor blood pump shown in Fig. 1；
Fig. 3 is the schematic diagram of inner supporting type axle journal；
Fig. 4 is the sectional view of inner supporting type axle journal.
Icon：1- pump cases；2- suspension rotors；3- inner supporting type axle journals；4- imports；5- matrixes；6- blades；7- permanent magnets turn
Son；8- pumping chambers；9- stators；10- helicla flutes；11- seal grooves；12- sealing rings；13- fastening bolts；14- pads；15- connections
Portion.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
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, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Suspension rotor blood pump embodiment one
As Figure 1-4, a kind of suspension rotor blood pump, the suspension rotor blood pump bag are provided in the present embodiment
Include pump case 1, suspension rotor 2 and inner supporting type axle journal 3；
The suspension rotor 2 and the inner supporting type axle journal 3 are located inside the pump case 1；
One end of the pump case 1 is provided with import 4, and the inner supporting type axle journal 3 is fixed on the other end of the pump case 1；
The suspension rotor 2 includes matrix 5, blade 6 and PM rotor 7；
Described matrix 5 is set in outside the inner supporting type axle journal 3, and leaves gap；
The blade 6 is fixed on described matrix 5 close to the side of import 4；The PM rotor 7 is inlaid in the base
In body 5；
The pump case 1 is additionally provided with the blade 6 for the pumping chamber 8 with ft connection；
The week side of boss of the pump case 1 is fixed with and the PM rotor 7 corresponding one delineation 9.
The blood pump of the suspension rotor 2 provided by the invention, including pump case 1, suspension rotor 2, pumping chamber 8, inner supporting type
Axle journal etc., wherein pump case 1 include the bottom of pump case 1 and the top of pump case 1, and suspension rotor 2 includes matrix 5, blade 6, PM rotor
7.Preferably, the bottom of pump case 1 is cylinder, and matrix 5 is also cylinder.PM rotor 7 is embedded in suspension rotor 2, with stream
Body is in completely isolated state.Inner supporting type axle journal is fixed together with the bottom of pump case 1.The outer wall and pump case of inner supporting type axle journal
The 1 same central axis of inwall.The central axis is also the axis of the blood pump of suspension rotor 2.The inwall and inner support of suspension rotor 2
There is gap between the outer wall of formula axle journal 3, they collectively form the sliding bearing friction pair of blood pump rotary motion.Work as suspension rotor
During 2 rotation, relative motion is formed between the inwall of suspension rotor 2 and the outer wall of inner supporting type axle journal 3, between fluid is pressed into
Gap, form oil lubrication so that there is fluid lubrication condition, so as to change between the inwall of inner supporting type axle journal 3 and suspension rotor 2
The Frotteurism of kind suspension rotor 2 simultaneously limits the radial motion of suspension rotor 2.It rotates former using the driving such as motor
Reason, by the field drives between stator 9 and PM rotor 7.Meanwhile during the rotation of suspension rotor 2, band movable vane piece 6 rotates, by entering
Blood is sucked and pressurizeed by mouth 4, is sent into pumping chamber 8 and is simultaneously pumped to outside.
The blood pump of the suspension rotor 2 provided by the invention, change existing by power transmission shaft direct-drive driving leaf
The mode of rotation is taken turns, is avoided using the issuable liquid axial direction seepage of power transmission shaft direct-drive, is ensureing that blood pump is normal
While operation, the pollution to blood is avoided.
Meanwhile there is hydrodynamic lubrication between suspension rotor 2 and inner support axle journal, easily start, rotate smooth without hair
Raw radial motion.It is additionally, since and employs inner support, the mode of external magnetic field driving, is needed than Mechanical Driven or external support
Smaller driving force is, it is necessary to which less acting can be such that impeller quickly starts and continue to rotate.
Such as Fig. 1-3, in the alternative of the present embodiment, the inner supporting type axle journal 3 inserts the week of part with described matrix 5
Side is provided with helicla flute 10.
When suspension rotor 2 rotates, formed between the inwall of suspension rotor 2 and the outer wall of inner supporting type axle journal 3 relative
Motion, fluid are pressed into gap, form the oil lubrication along the direction of helicla flute 10 so that inner supporting type axle journal 3 turns with suspending
There is fluid lubrication condition between the inwall of son 2, preferably lubricated.
Such as Fig. 2, in the alternative of the present embodiment, the inner supporting type axle journal 3 inserts with the interference of pump case 1.
The bottom of pump case 1 and the benchmark that the joint portion of inner supporting type axle journal 3 is the assembling of inner supporting type axle journal 3, inner supporting type axle
Neck 3 and the faying face of the bottom of pump case 1 are interference fit at the joint portion of the bottom of pump case 1.Interference inserts the more firm of fixation,
It is difficult for drop-off.
Further, the week side of boss of the inner supporting type axle journal 3 at the inserting with the pump case 1 is provided with a circle seal groove
11, it is provided with sealing ring 12 in the seal groove 11.
In order to ensure that the inside of blood pump and outside are completely isolated, seal groove 11 is opened up at faying face, sealing ring is installed
12, to ensure sealing effectiveness.
Preferably, the sealing ring 12 uses rubber seal 12.
The good sealing effect of rubber seal 12, can possess pressure-bearing within the specific limits with pressure-bearing and seal dual
Effect.
Further, the inserting end of the inner supporting type axle journal 3 and the pump case 1 is additionally provided with fastening bolt 13, described
Fastening bolt 13 is additionally provided with pad 14 with the pump case 1.
Inner supporting type axle journal is fixed together via fastening bolt 13 and pad 14 with the bottom of pump case 1, and fixed is more firm
Gu it will not fall off and rock.
In the alternative of the present embodiment, the PM rotor 7 is completely encapsulated in described matrix 5.
Permanent magnet is embedded in suspension rotor 2, is in completely isolated state with fluid, blood will not be impacted, and is protected
Demonstrate,prove the purity of blood.
Such as Fig. 2, in the alternative of the present embodiment, also there is gap, and be more than between described matrix 5 and the pump case 1
Gap between the inner supporting type axle journal 3 and described matrix 5.
Gap between described matrix 5 and the pump case 1 is also filled with blood, and lubrication is equally played to suspension rotor 2 and is made
With so that suspension rotor 2 is easier to rotate.
Such as Fig. 1-2, in the alternative of the present embodiment, the one end of the pump case 1 away from the inner supporting type axle journal 3 is set
There is the connecting portion 15 of tubulose, one end of the connecting portion 15 connects with the pump case 1, and the other end forms the import 4.
Connecting portion 15 is set, is more convenient connection, meanwhile, also allow for sucking blood and be pumped to outside pump.
Pumping system embodiment
This embodiment offers a kind of pumping system, the pumping system has used the blood of suspension rotor 2 as described above
Pump.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of suspension rotor blood pump, it is characterised in that including pump case, suspension rotor and inner supporting type axle journal；
The suspension rotor and the inner supporting type axle journal are located inside the pump case；
One end of the pump case is provided with import, and the inner supporting type axle journal is fixed on the other end of the pump case；
The suspension rotor includes matrix, blade and PM rotor；
Described matrix is set in outside the inner supporting type axle journal, and leaves gap；
The blade is fixed on described matrix close to the inlet side；The PM rotor is inlaid in described matrix；
The pump case be additionally provided with the blade for collect blood and with the pumping chamber of ft connection；
The week side of boss of the pump case is fixed with delineation corresponding with the PM rotor.
2. suspension rotor blood pump according to claim 1, it is characterised in that the inner supporting type axle journal and described matrix
The week side of boss of inserting part is provided with helicla flute.
3. suspension rotor blood pump according to claim 1, it is characterised in that the inner supporting type axle journal and the pump case
Interference inserts.
4. suspension rotor blood pump according to claim 3, it is characterised in that the inner supporting type axle journal with the pump
The week side of boss at the inserting of shell is provided with a circle seal groove, and sealing ring is provided with the seal groove.
5. suspension rotor blood pump according to claim 4, it is characterised in that the sealing ring uses rubber seal.
6. suspension rotor blood pump according to claim 3, it is characterised in that the inner supporting type axle journal and the pump case
Inserting end be additionally provided with fastening bolt, the fastening bolt is additionally provided with pad with the pump case part.
7. suspension rotor blood pump according to claim 1, it is characterised in that the PM rotor is completely encapsulated in institute
State in matrix.
8. suspension rotor blood pump according to claim 1, it is characterised in that also have between described matrix and the pump case
There is gap, and more than the gap between the inner supporting type axle journal and described matrix.
9. suspension rotor blood pump according to claim 1, it is characterised in that the pump case is away from the inner supporting type axle
One end of neck is provided with the connecting portion of tubulose, and one end of the connecting portion connects with the pump case, and the other end forms the import.
10. a kind of pumping system, it is characterised in that the pumping system has used outstanding as described in claim any one of 1-9
Floating rotor blood pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710733173.8A CN107349484A (en) | 2017-08-24 | 2017-08-24 | Suspension rotor blood pump and pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710733173.8A CN107349484A (en) | 2017-08-24 | 2017-08-24 | Suspension rotor blood pump and pumping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107349484A true CN107349484A (en) | 2017-11-17 |
Family
ID=60289914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710733173.8A Pending CN107349484A (en) | 2017-08-24 | 2017-08-24 | Suspension rotor blood pump and pumping system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107349484A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| CN112689716A (en) * | 2018-10-18 | 2021-04-20 | 波士顿科学国际有限公司 | Blood pump shaft bearing |
| 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 |
| 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) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
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| CA2370740A1 (en) * | 1999-04-28 | 2000-11-02 | Kriton Medical, Inc. | Rotary blood pump |
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| JP2003205030A (en) * | 2002-01-15 | 2003-07-22 | Mitsubishi Heavy Ind Ltd | Artificial cardiac pump |
| US20040236420A1 (en) * | 2001-07-12 | 2004-11-25 | Takashi Yamane | Artificial heart pump equipped with hydrodynamic bearing |
| CN1958085A (en) * | 2006-02-10 | 2007-05-09 | 北京航空航天大学 | Outer bearing type artifical heart blood pump |
| CN209033309U (en) * | 2017-08-24 | 2019-06-28 | 清华大学 | Suspension rotor blood pump and pumping system |
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- 2017-08-24 CN CN201710733173.8A patent/CN107349484A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| CA2370740A1 (en) * | 1999-04-28 | 2000-11-02 | Kriton Medical, Inc. | Rotary blood pump |
| CN1342498A (en) * | 2000-09-14 | 2002-04-03 | 株式会社Jms | Turbine blood pump |
| US20040236420A1 (en) * | 2001-07-12 | 2004-11-25 | Takashi Yamane | Artificial heart pump equipped with hydrodynamic bearing |
| JP2003205030A (en) * | 2002-01-15 | 2003-07-22 | Mitsubishi Heavy Ind Ltd | Artificial cardiac pump |
| CN1958085A (en) * | 2006-02-10 | 2007-05-09 | 北京航空航天大学 | Outer bearing type artifical heart blood pump |
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Cited By (10)
| 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 |
| CN112689716A (en) * | 2018-10-18 | 2021-04-20 | 波士顿科学国际有限公司 | Blood pump shaft bearing |
| CN112689716B (en) * | 2018-10-18 | 2023-06-30 | 波士顿科学国际有限公司 | Blood pump shaft bearing |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | 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 |
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