CN100488577C - Outer bearing type artificial heart blood pump - Google Patents
Outer bearing type artificial heart blood pump Download PDFInfo
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- CN100488577C CN100488577C CNB2006100028943A CN200610002894A CN100488577C CN 100488577 C CN100488577 C CN 100488577C CN B2006100028943 A CNB2006100028943 A CN B2006100028943A CN 200610002894 A CN200610002894 A CN 200610002894A CN 100488577 C CN100488577 C CN 100488577C
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- outer bearing
- blood pump
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Abstract
A blood pump with external bearing for artificial heart is composed of casing, solid supporting body with conic head, external bearing type rotor unit, and flow-out tube. Said rotor unit consists of shell, hollow hub, spiral blade wheel, permanent magnet, external bearing surrounding said shell, and the coil surrounding the external wall of said permanent magnet.
Description
Technical field
The present invention relates to the mobile blood pump of a kind of accessory heart inner blood, refer to a kind of outer bearing type artifical heart blood pump especially.
Background technology
Clinically, need carry out auxiliary treatment by artificial mechanical's device for heart failure patient.At present, artificial mechanical's adjuvant therapy device commonly used has centrifugal pump, axial-flow pump and pulsate pump, is mainly used in ventricle auxiliary treatment and total artificial heart.Because axial flow blood pump has characteristics such as volume is little, efficient is high, implantable, so axial flow blood pump is the present research focus of artificial ventricle's adjuvant therapy device clinically.
Modal axial-flow pump all is an inner bearing formula artificial heart blood pump.Existing inner bearing formula artificial heart blood pump is the inner bearing structure, and the spring bearing that promptly drives the impeller of rotor rotation is positioned at rotor or impeller hub inside.Because the wheel hub inner space is narrow and small, this structure has proposed very high specification requirement for the material and the processing technique of bearing, has brought very burden for simultaneously the lubricated of bearing, and forms thrombosis easily at these positions.
In order to guarantee the normal operation of artificial heart blood pump, present stage, main in the world popular solution was to use non-lubricating ceramic bearing, ruby bearing or utilization magnetic suspension rotor.Though the lubrication problem of bearing when these schemes have solved running, their processing technique are all comparatively complicated, the specification requirement that has is domestic can't to be reached, and causes cost to improve greatly; And the thrombosis problem does not still solve.Particularly, for blood formed element, particularly the destruction of erythrocyte is quite big with the gap leakage current between the casing and high shearing force for rotor blade, and the haemolysis performance issue that causes thus can't overcome.
Summary of the invention
For the high shear force that solves inner bearing formula artificial heart blood pump lubrication problem, when running impeller of rotor blade tip to the blood formed element easy thrombosed problem of destruction problem and bearing place of erythrocyte particularly, the purpose of this invention is to provide a kind of outer bearing type artifical heart blood pump.
For achieving the above object, the present invention takes following design: a kind of outer bearing type artifical heart blood pump is characterized in that: solid supporter, outer bearing type artifical rotor and the outflow pipeline that links to each other with the shell afterbody that it is taper by shell, fixing head in the enclosure mainly constitute;
Described outer bearing type artifical rotor by the rotor casing, be fixed on the shape of the rotor casing inside hollow wheel hub similar, be fixed on screw type impeller of rotor between rotor casing inner wall and the hollow wheel hub outer wall, be fixed on the permanent magnet of rotor casing outer wall to solid supporter nose shape, the coil combination that is fixed on the bearing of rotor casing outer wall and is enclosed within the permanent magnet outer wall forms;
Described outer bearing type artifical rotor is wrapped by described shell after being enclosed within the head of described solid supporter.
Described rotor casing, wheel hub and impeller of rotor are structure as a whole.
There is not the gap between described impeller of rotor and the rotor casing.
Because the present invention be the outer bearing type artifical rotor, its bearing fixing outside rotor, so, not high to the manufacture process requirement of bearing, be convenient to processing and manufacturing, installation, and be convenient to bearing lubrication; The more important thing is that to blood formed element, particularly erythrocytic destruction is little, reduce haemolysis; Reduce the formation of the inner thrombosis of the pump housing.
Description of drawings
Fig. 1 is an outer bearing type artifical heart blood pump structural representation of the present invention
Fig. 2 is an outer bearing type artifical heart blood pump decomposition texture sketch map of the present invention
Fig. 3 is the cutaway view of outer bearing type artifical heart blood pump of the present invention
Fig. 4 is the side view of outer bearing type artifical heart blood pump of the present invention
The specific embodiment
As Fig. 1～shown in Figure 4, outer bearing type artifical heart blood pump disclosed by the invention mainly by shell 1, to be fixed on head in the shell 1 be that solid supporter 2, outer bearing type artifical rotor 3 and the outflow pipeline 4 that links to each other with shell 1 afterbody of taper constitutes.
Outer bearing type artifical rotor 3 by rotor casing 31, be fixed on the shape of the rotor casing 31 inside hollow wheel hub 32 similar, be fixed on screw type impeller of rotor 33 between rotor casing 31 inwalls and hollow wheel hub 32 outer walls, be fixed on the permanent magnet 34 of rotor casing 31 outer walls to solid supporter 2 nose shapes, the coil 36 that is fixed on the bearing 35 of rotor casing 31 outer walls and is enclosed within permanent magnet 34 outer walls combines.
Above-mentioned outer bearing type artifical rotor 3 is wrapped by shell 1 after being enclosed within the head of solid supporter 2.
After outer bearing type artifical blood pump of the present invention is installed between failure heart and the trunk, connect the power supply at shell interior loop two ends, make and flow through electric current generation magnetic field in the coil, this magnetic field and permanent magnet interact, promoting rotor casing, impeller and wheel hub by outer bearing rotates together, blood (shown in arrow among Fig. 1) flows out through flowing out pipeline along the outer wall of solid supporter under the promotion of impeller of rotor.
During fabrication, rotor casing 31, wheel hub 32 and impeller of rotor 33 can be made one.Advantage of the present invention:
1, low cost of manufacture is easy to processing.Because the present invention be the outer bearing type artifical rotor, its bearing fixing outside rotor, so, not high to the manufacture process requirement of bearing, be convenient to processing and manufacturing, installation, low cost of manufacture.
2, be convenient to bearing lubrication.Because the present invention is an outer bearing, so, realize that for lubricated being easy to of bearing the running of bearing is stable more, reliable.
3, little to the destruction of erythrocyte.Because impeller of rotor of the present invention is fixed between rotor casing inner wall and the hollow wheel hub outer wall, and there is not the gap between the rotor casing, when blood flow, do not exist erythrocyte is carried out destructive gap stream shearing force, so the present invention is little to the destruction of erythrocyte, fundamentally solved tip clearance stream to blood formed element, mainly be the destruction of erythrocyte, avoided the influence of bearing, promptly reduce haemolysis blood formed element.
4, reduce the thrombosis problem.Thrombosis mainly results from the non-stationary flow zone of liquid flow in the blood pump, and for example traditional inner bearing formula blood pump is around bearing, because have bigger turbulent area, blood flow rate changes, so, easily cause thrombosis.And the present invention has been owing to adopted the outer bearing type artifical design, thus the turbulent area that causes when having avoided the bearing peripheral blood to flow, thus avoided because the built-in thrombosis that causes of bearing reduces the formation of the inner thrombosis of the pump housing.
The above is the specific embodiment of the present invention and the know-why used, and is any based on the equivalent transformation on the technical solution of the present invention basis, all belongs within the protection domain of the present invention.
Claims (2)
1, a kind of outer bearing type artifical heart blood pump is characterized in that: solid supporter, outer bearing type artifical rotor and the outflow pipeline that links to each other with the shell afterbody that it is taper by shell, fixing head in the enclosure mainly constitute;
Described outer bearing type artifical rotor by the rotor casing, be fixed on the shape of the rotor casing inside hollow wheel hub similar, be fixed on screw type impeller of rotor between rotor casing inner wall and the hollow wheel hub outer wall, be fixed on the permanent magnet of rotor casing outer wall to solid supporter nose shape, the coil combination that is fixed on the bearing of rotor casing outer wall and is enclosed within the permanent magnet outer wall forms;
There is not the gap between described impeller of rotor and the rotor casing;
Described outer bearing type artifical rotor is wrapped by described shell after being enclosed within the head of described solid supporter.
2, outer bearing type artifical heart blood pump according to claim 1 is characterized in that: described rotor casing, wheel hub and impeller of rotor are structure as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100028943A CN100488577C (en) | 2006-02-10 | 2006-02-10 | Outer bearing type artificial heart blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100028943A CN100488577C (en) | 2006-02-10 | 2006-02-10 | Outer bearing type artificial heart blood pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1958085A CN1958085A (en) | 2007-05-09 |
| CN100488577C true CN100488577C (en) | 2009-05-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100028943A Expired - Fee Related CN100488577C (en) | 2006-02-10 | 2006-02-10 | Outer bearing type artificial heart blood pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100488577C (en) |
Cited By (6)
| 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 |
| 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 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822854B (en) * | 2010-05-06 | 2012-09-05 | 北京航空航天大学 | Front diversing flow rotor structure with tapping splitter blades for artificial heart blood pump |
| DE102013104849A1 (en) * | 2012-06-20 | 2013-12-24 | Vorwerk & Co. Interholding Gmbh | Fan wheel and electric motor |
| CN105498002B (en) * | 2015-12-23 | 2018-06-15 | 丰凯医疗器械（上海）有限公司 | Pump blood impeller |
| CN107349484A (en) * | 2017-08-24 | 2017-11-17 | 清华大学 | Suspension rotor blood pump and pumping system |
| EP3795836A1 (en) * | 2019-09-18 | 2021-03-24 | Levitronix GmbH | Centrifugal pump and pump housing |
| CN111337659B (en) * | 2020-03-16 | 2021-06-18 | 中南大学 | Blood shearing injury simulator |
Citations (7)
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| US5370509A (en) * | 1989-05-08 | 1994-12-06 | The Cleveland Clinic Foundation | Sealless rotodynamic pump with fluid bearing |
| CN2558386Y (en) * | 2002-06-19 | 2003-07-02 | 中国航天科技集团公司第十一研究所(京) | Spiral mixed-flow impeller for auxiliary ventricle blood pump |
| JP2003205030A (en) * | 2002-01-15 | 2003-07-22 | Mitsubishi Heavy Ind Ltd | Artificial cardiac pump |
| US6716157B2 (en) * | 2002-02-28 | 2004-04-06 | Michael P. Goldowsky | Magnetic suspension blood pump |
| WO2005028000A1 (en) * | 2003-09-18 | 2005-03-31 | Myrakelle, Llc | Rotary blood pump |
| WO2005030296A3 (en) * | 2003-09-25 | 2005-06-23 | Medforte Res Foundation | Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller |
| CN2880096Y (en) * | 2006-02-10 | 2007-03-21 | 北京航空航天大学 | External bearing type artificial heart blood circulation pump |
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2006
- 2006-02-10 CN CNB2006100028943A patent/CN100488577C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5370509A (en) * | 1989-05-08 | 1994-12-06 | The Cleveland Clinic Foundation | Sealless rotodynamic pump with fluid bearing |
| JP2003205030A (en) * | 2002-01-15 | 2003-07-22 | Mitsubishi Heavy Ind Ltd | Artificial cardiac pump |
| US6716157B2 (en) * | 2002-02-28 | 2004-04-06 | Michael P. Goldowsky | Magnetic suspension blood pump |
| CN2558386Y (en) * | 2002-06-19 | 2003-07-02 | 中国航天科技集团公司第十一研究所(京) | Spiral mixed-flow impeller for auxiliary ventricle blood pump |
| WO2005028000A1 (en) * | 2003-09-18 | 2005-03-31 | Myrakelle, Llc | Rotary blood pump |
| WO2005030296A3 (en) * | 2003-09-25 | 2005-06-23 | Medforte Res Foundation | Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller |
| CN2880096Y (en) * | 2006-02-10 | 2007-03-21 | 北京航空航天大学 | External bearing type artificial heart blood circulation pump |
Cited By (8)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1958085A (en) | 2007-05-09 |
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Granted publication date: 20090520 Termination date: 20100210 |