CN1833736A - Pulsation axial flow blood pump - Google Patents
Pulsation axial flow blood pump Download PDFInfo
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- CN1833736A CN1833736A CN 200510055575 CN200510055575A CN1833736A CN 1833736 A CN1833736 A CN 1833736A CN 200510055575 CN200510055575 CN 200510055575 CN 200510055575 A CN200510055575 A CN 200510055575A CN 1833736 A CN1833736 A CN 1833736A
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Abstract
An axial-flow pulse blood pump for the patient of acute heart failure and final-phase heart disease is composed of a stator consisting of windings and shell, and a rotor consisting of high-energy magnet and propulsion unit. Said propulsion unit comprises spiral rotor, central axle and three pairs of cylindrical magnets to form a sealed one-way spiral blood channel. The rotation speed of rotor is pulsed by changing the pulse width and frequency of voltage or current in stator.
Description
Technical field
The present invention relates to a kind of heart assisting pump of beating.
Background technology
In the research process of nearly half a century of heart-assist device, aspects such as its material, structure, processing technology, function and service life are constantly being improved, are being developed, different driving modes such as pneumatic, electronic, electric hydraulic pressure occurred, the blood flow that is produced is also more near the physiology heart.Heart-assist device is the important means that the critical patient earns a bare living.Be divided into finally and substitute, wait for transplanting and reduce cardiac load, three kinds of modes of promotion functional rehabilitation.
According to statistics, there are 4,000,000 patients with heart failure in China.Along with medical science applied continuous development, it is more and more to break away from cardiopulmonary bypass unit, wait heart transplantation and heart disease at final stage people behind acute heart failure, the operation on heart, is badly in need of heart assistance short-term transition or keeps long period wait heart donor or long-term assisting.Therefore, require auxiliary device not only favorable durability will be arranged, minimum blood destructiveness also will have low noise, low power consuming, miniaturization, characteristic such as implantable.Axial-flow pump has above-mentioned advantage just, generally is placed on outside the heart, and at left ventricle apex and ascending aorta or descending aorta, right superior pulmonary vein inserts left room and ascending aorta is set up path, aorta is squeezed in left chamber or left room blood, to keep the systemic blood supply.Heart-assist device commonly used has centrifugal pump and axial-flow pump, and axial-flow pump is slighter than centrifugal pump to the destructiveness of blood, and it is little to have a volume, advantage such as easy to carry, therefore, in the research implantable, the axial-flow type ventricular assist device, become the hot subject of present research.The floating technology of dynamic pressure liquid is used in axial-flow pump first, has further promoted the research and development of axial-flow pump, and heart-assist device is progressively improved becomes possibility.
Axial-flow pump commonly used at present has (1) MicroMed DeBakey type heart chamber auxiliary pump, is used to wait for the patient of heart transplantation, clinical existing 5 years experience; (2) the HeartMate II of Nimbus company design; (3) Jarvik 2000, in clinical practice, obtained good effect; (4) in zoopery, obtained satisfied progress by the axial-flow pump of the Akamatsu development and design of Japanese Terumo company; (5) design such as Yamazaki is placed on intraventricular axial-flow pump.(6) the Germany system berlin Heart profile shaft pump of bleeding.(7), promote axial-flow pump-hemopump that cardiac function recovers with the hemodynamics of improving the cardiogenic shock patient with alleviate left chamber load.Described traditional axial-flow pump is difficult to solve in the blade rotation process and the armature spindle end-grain cutting is cut blood and caused a blood and the destructive difficult problem of clotting mechanism.
Normally used heart-assist device can cause the infection of various antibacterials even fungus, and thrombosis is destroyed blood, reduces immunologic function.The prolonged application axial-flow pump carries out advection perfusion and still has certain dispute, experiment showed, that prolonged application do not have pulsatile flow and can cause attenuation of aorta structural pipe wall and vasoconstriction function reduction.Pulsatile flow more meets the Human Physiology needs.And wear and tear between the collar of axial-flow pump and its supporting, cause the destruction of blood and the formation of thrombosis.Use the floating technology of dynamic pressure liquid rotor is suspended, in the duty, form mobile blood film between axle and supporting, the friction between avoiding axle and supporting can reduce blood destruction and prevent thrombosis, obviously prolongs the service life of pump.
Axial flow blood pump makes much progress the ventricle slave side.As Jarvik 2000 axial-flow pumps; Cleveland Clinic centrifugal pump; Streamliner mixing blood pump.These blood pumps all are the impeller driven blood flows by high speed rotating, and play the auxiliary effect of ventricle.With regard to Jarvik 2000, axle contacts with the close of blood, may produce blood and destroy, and be easy to form thrombosis.Use the floating technology of dynamic pressure liquid and make the mobile blood film of formation between axle and supporting, can produce minimum blood and destroy.Countershaft the washing away of mobile blood in the axle reduced thrombotic chance.Rotor suspends, and obviously reduces energy expenditure.
Summary of the invention
The objective of the invention is the floating technology of axle head application dynamic pressure liquid suspends rotor.Electric current, voltage, pulsewidth, frequency change by stator winding produce the pulsation rotating speed, form pulsatile flow, drive p-m rotor and drive the spiral pushing device high speed rotating.Use heart rate and electrocardio-activity and motor synchronous control principle, form and be fit to individual pulsatile flow and frequency, promote the blood one-way flow, assist or replace cardiac pumping fully.
A kind of pulsation axial flow blood pump of the present invention, it is made up of stator, rotor.Stator is made up of stator winding and stator case.Rotor is made up of the magnet and the propulsion plant of high level, and its propulsion plant is by helical rotor, central shaft and be fixed on and be mutually 60 ° of three pairs of cylindrical magnets on the rotor and form, and forms the unidirectional propelling passage of blood of a helixseal; Rotor is inserted in the supporting sleeve by central shaft two cylindrical axle heads, and axle head is used the floating technology of dynamic pressure liquid suspends rotor.Electric current, voltage, pulsewidth, frequency change by stator winding produce the pulsation rotating speed, produce synchronous pulsatile flow, drive p-m rotor and drive the spiral pushing device high speed rotating, use heart rate and electrocardio-activity and motor synchronous control principle, form and be fit to individual pulsatile flow and frequency, promote the blood one-way flow, auxiliary or replace cardiac pumping fully.The two ends of described rotor are respectively the entrance and exit of pump.
Aforesaid pulsation axial flow blood pump is used the floating technology (the armature spindle end bearing partly is carved with 10 °-90 ° helicla flute, and groove is counted the 1-20 bar, 0.05 micron-50 microns of groove depths) of dynamic pressure liquid at the rotor axle head, and rotor is suspended.
Aforesaid pulsation axial flow blood pump is formed by being mutually 60 ° of three pairs of cylindrical magnets on the rotor, and is radially bonding, presses N-S and arranges formation, surface applications magnetism-free stainless steel or titanium alloy.
Aforesaid pulsation axial flow blood pump, its cylindrical helical blade is formed by three that are mutually 120 °, presses uniform pitch and arranges, and is fixed on the rotor; The design of its pitch and blade angle is to satisfy the requirement that blood is produced minimized friction resistance and minimum eddy currents.
Aforesaid pulsation axial flow blood pump is positioned at stator cover two ends, and the supporting of the cylindrical axle head of fixed center axis is formed by being mutually 90 ° four or three supporting structures of 120 °.
Aforesaid pulsation axial flow blood pump all is coated with the heparin biological coating on the surface of cover, column permanent magnet material, helical blade and central shaft in described rotor.
Aforesaid pulsation axial flow blood pump has a D.C. regulated power supply or high-energy battery to be connected with described stator.
Aforesaid pulsation axial flow blood pump, electric current, voltage, pulsewidth, frequency change generation pulsation rotating speed by stator winding drive p-m rotor and drive the spiral pushing device high speed rotating, produce pulsatile flow.
Aforesaid pulsation axial flow blood pump is used heart rate and electrocardio-activity and motor synchronous control principle, forms to be fit to individual pulsatile flow and frequency, promotes the blood one-way flow.
Advantage of the present invention and positive effect are as follows:
1. the invention provides the floating technology of a kind of rotor axle head dynamic pressure liquid rotor is suspended, the floating technology of application dynamic pressure liquid makes between axle and supporting and forms mobile blood film, and the blood that can produce minimum destroys.Countershaft the washing away of mobile blood in the axle reduces thrombotic chance.Rotor suspends, and can obviously reduce energy expenditure.
2. the invention provides the floating technology of rotor axle head dynamic pressure liquid rotor is suspended, the floating technology of application dynamic pressure liquid makes between axle and supporting and forms mobile blood film, and in the service life that can obviously improve axial flow blood pump, blood pump is implanted for a long time becomes possibility.
3. pulsation axial flow blood pump provided by the invention, electric current, voltage, pulsewidth, frequency change generation pulsation rotating speed by stator winding drive p-m rotor and drive the spiral pushing device high speed rotating, form pulsatile flow, are more suitable for the human body needs.
4. pulsation axial flow blood pump provided by the invention is used heart rate and electrocardio-activity and motor synchronous control principle, produces and individual synchronous pulsatile flow, obviously improves perfused tissue.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the floating schematic diagram of dynamic pressure liquid of the present invention;
The specific embodiment
Pulsation axial flow blood pump of the present invention comprises: (1) stator winding is wrapped on the stator core; (2) cylindrical rotors are positioned at the central authorities of axial-flow pump; (3) by many cylindrical magnet is formed on the rotor, be positioned at efferent tract; (4) many helical blades are fixed in the surface of rotor, are positioned at the inflow road; (5) rotor is inserted in the supporting sleeve by central shaft two cylindrical axle heads, and axle head is used the floating technology of dynamic pressure liquid suspends rotor.(6) stator winding in shell body, is used the laser welded seal shell body with epoxy sealing.(7) by computer software control dc brushless motor wiring board, realize that electric current, voltage, pulsewidth, the frequency change of stator winding produces the pulsation rotating speed, drive p-m rotor and drive the spiral pushing device high speed rotating, form pulsatile flow.(8) use heart rate and electrocardio-activity and motor synchronous control principle, produce and individual synchronous pulsatile flow, assist or replace cardiac pumping fully.This device can be used as short-term or long-term ventricle is auxiliary, is applicable to acute cardiac nonfunction and heart disease at final stage patient.
The specific embodiment of the invention can be referring to Fig. 1 and Fig. 2.Fig. 1 is a structural representation of the present invention, and it comprises: (1), rotor (2), shell (3), stator (4), inner shell (5) five parts composition are held in the over draft of dynamic pressure liquid.Wherein the structure of stator is made up of stator case and stator winding.The concrete structure of rotor is by rotor block, epitrochanterian many surfaces of cylindrical magnet and many helical blades being fixed in rotor.The motor revolution of this device is scalable in 5000-15000 rev/min of scope.About the supporting three to eight for supporting rib is fixed in the inner housing, be positioned at the two ends of cylinder-shaped sleeve.One end is that the inlet and the other end of blood is the outlet of blood, and the spiral blood that forms a sealing advances passage.Spiral blood in the described propulsion plant advances on the vias inner walls surface and all is coated with the heparinization biological coating.The both ends of described central shaft are cylindrical, place in the axle sleeve of supporting rib, and axle head is used the floating technology of dynamic pressure liquid, and make it satisfy the rotor suspension.
A key issue of axial flow blood pump design is to use life problems, use the floating technology of dynamic pressure liquid at the rotor axle head rotor is suspended, between axle and supporting, form mobile blood film, reduce the friction between axle and supporting, reduce blood and destroy the service life of obviously improving axial flow blood pump.Save a large amount of energy consumptions simultaneously, make the remote activity of patient become possibility.
Electric current, voltage, pulsewidth, frequency change by stator winding produce the pulsation rotating speed, form pulsatile flow.Use heart rate and electrocardio-activity and motor synchronous control principle, produce and the synchronous pulsatile flow of human body, obviously improve perfused tissue, effectively accessory heart.
Claims (9)
1. pulsation axial flow blood pump, it is made up of stator, rotor; Stator is made up of stator winding and stator case, rotor is made up of the magnet and the propulsion plant of high level, its propulsion plant is by helical rotor, central shaft and be fixed on and be mutually 60 ° of three pairs of cylindrical magnets on the rotor and form, and forms the unidirectional propelling passage of blood of a helixseal; Rotor is inserted in the supporting sleeve by central shaft two cylindrical axle heads, and axle head is used the floating technology of dynamic pressure liquid suspends rotor; Electric current, voltage, pulsewidth, frequency change by stator winding produce the pulsation rotating speed, promote the blood one-way flow, use heart rate and electrocardio-activity and motor synchronous control principle, form to be fit to individual pulsatile flow and frequency.
2. a kind of pulsation axial flow blood pump as claimed in claim 1 is characterized in that: use the floating technology (the armature spindle end bearing partly is carved with 10 °-90 ° helicla flute, and groove is counted the 1-20 bar, 0.05 micron-50 microns of groove depths) of dynamic pressure liquid at the rotor axle head rotor is suspended.
3. a kind of pulsation axial flow blood pump as claimed in claim 1 is characterized in that: the rotor axle head is used the floating technology of dynamic pressure liquid and is made the mobile blood film of formation between axle and supporting, obviously reduces the friction between axle and supporting, the service life of raising axial flow blood pump.
4. a kind of pulsation axial flow blood pump as claimed in claim 1, it is characterized in that: on the rotor by mutually four pairs at 45,60 ° three pairs or 90 ° of two pairs of cylindrical magnets are formed, its spiral angle is a standard with the eddy current requirement of minimum, radially bonding, press N-S and arrange formation, surface applications magnetism-free stainless steel or titanium alloy.
5. a kind of pulsation axial flow blood pump as claimed in claim 1 is characterized in that: its cylindrical helical blade is formed by being mutually 90 ° four, 120 ° three or 180 ° two, presses uniform pitch and arranges, and is fixed on the rotor; The design of its pitch and blade angle is to satisfy the requirement that blood is produced minimized friction resistance and minimum eddy currents.
6. a kind of pulsation axial flow blood pump as claimed in claim 1 is characterized in that: be positioned at stator cover two ends, the supporting of the cylindrical axle head of fixed center axis is formed by being mutually 60 ° six, 90 ° four or three supporting structures of 120 °.
7. a kind of pulsation axial flow blood pump as claimed in claim 1 is characterized in that: inner shell materials is used titanium alloy and magnetism-free stainless steel is made.
8. a kind of pulsation axial flow blood pump as claimed in claim 1 is characterized in that: electric current, voltage, pulsewidth, frequency change by stator winding produce the pulsation rotating speed, form pulsatile flow.
9. a kind of pulsation axial flow blood pump as claimed in claim 1 is characterized in that: use heart rate and electrocardio-activity and motor synchronous control principle, produce and the synchronous pulsatile flow of human body, obviously improve perfused tissue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510055575 CN1833736A (en) | 2005-03-17 | 2005-03-17 | Pulsation axial flow blood pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510055575 CN1833736A (en) | 2005-03-17 | 2005-03-17 | Pulsation axial flow blood pump |
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| CN1833736A true CN1833736A (en) | 2006-09-20 |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977463A (en) * | 2014-06-06 | 2014-08-13 | 清华大学 | Implanted miniature antithrombus axial blood pump |
| CN104056312A (en) * | 2014-06-20 | 2014-09-24 | 冯森铭 | Implantable mini-type shaftless axial blood pump |
| CN104208764A (en) * | 2014-09-26 | 2014-12-17 | 长治市久安人工心脏科技开发有限公司 | Magnetic fluid suspension type axial pump heart assisting device |
| WO2015039605A1 (en) * | 2013-09-17 | 2015-03-26 | 上海微创医疗器械（集团）有限公司 | Implanted self-suspended axial flow blood pump |
| CN105477706A (en) * | 2016-01-14 | 2016-04-13 | 山东大学 | Double-stator hybrid supporting artificial heart pump |
| CN105517589A (en) * | 2013-07-09 | 2016-04-20 | 德国弗雷泽纽斯医疗保健股份有限公司 | Method for operating an extracorporeal blood treatment device and blood treatment device |
| CN106075621A (en) * | 2015-04-28 | 2016-11-09 | 傅风荣 | A kind of implantation blood pump in operative cardiac |
| CN107441573A (en) * | 2017-07-20 | 2017-12-08 | 山东大学 | A kind of axial-flow type magnetic suspension blood pump with pulsation speed governing feature |
| CN109562211A (en) * | 2016-08-01 | 2019-04-02 | 心脏器械股份有限公司 | It is determined based on the heart rate of VAD current waveform |
| 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 |
| US11368081B2 (en) | 2018-01-24 | 2022-06-21 | Kardion Gmbh | Magnetic coupling element with a magnetic bearing function |
| 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 |
| US11754075B2 (en) | 2018-07-10 | 2023-09-12 | Kardion Gmbh | Impeller for an implantable, vascular support system |
| US11944805B2 (en) | 2020-01-31 | 2024-04-02 | Kardion Gmbh | Pump for delivering a fluid and method of manufacturing a pump |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US12005248B2 (en) | 2018-05-16 | 2024-06-11 | Kardion Gmbh | Rotor bearing system |
-
2005
- 2005-03-17 CN CN 200510055575 patent/CN1833736A/en active Pending
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105517589A (en) * | 2013-07-09 | 2016-04-20 | 德国弗雷泽纽斯医疗保健股份有限公司 | Method for operating an extracorporeal blood treatment device and blood treatment device |
| CN110064083A (en) * | 2013-07-09 | 2019-07-30 | 德国弗雷泽纽斯医疗保健股份有限公司 | Extracorporeal blood treat-ment apparatus operating method and blood processing apparatus |
| US10124103B2 (en) | 2013-07-09 | 2018-11-13 | Fresenius Medical Care Deutschland Gmbh | Method for operating an extracorporeal blood treatment apparatus and blood treatment apparatus |
| WO2015039605A1 (en) * | 2013-09-17 | 2015-03-26 | 上海微创医疗器械（集团）有限公司 | Implanted self-suspended axial flow blood pump |
| CN103977463A (en) * | 2014-06-06 | 2014-08-13 | 清华大学 | Implanted miniature antithrombus axial blood pump |
| CN104056312A (en) * | 2014-06-20 | 2014-09-24 | 冯森铭 | Implantable mini-type shaftless axial blood pump |
| CN104208764B (en) * | 2014-09-26 | 2016-08-17 | 长治市久安人工心脏科技开发有限公司 | A kind of magnetic liquid suspension formula axial-flow pump heart-assist device |
| CN104208764A (en) * | 2014-09-26 | 2014-12-17 | 长治市久安人工心脏科技开发有限公司 | Magnetic fluid suspension type axial pump heart assisting device |
| CN106075621A (en) * | 2015-04-28 | 2016-11-09 | 傅风荣 | A kind of implantation blood pump in operative cardiac |
| CN105477706A (en) * | 2016-01-14 | 2016-04-13 | 山东大学 | Double-stator hybrid supporting artificial heart pump |
| CN113499538A (en) * | 2016-08-01 | 2021-10-15 | 心脏器械股份有限公司 | Heart rate determination based on VAD current waveform |
| CN109562211A (en) * | 2016-08-01 | 2019-04-02 | 心脏器械股份有限公司 | It is determined based on the heart rate of VAD current waveform |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| CN107441573B (en) * | 2017-07-20 | 2020-03-31 | 山东大学 | Axial-flow type magnetic suspension blood pump with pulsation speed regulation characteristic |
| CN107441573A (en) * | 2017-07-20 | 2017-12-08 | 山东大学 | A kind of axial-flow type magnetic suspension blood pump with pulsation speed governing feature |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11368081B2 (en) | 2018-01-24 | 2022-06-21 | Kardion Gmbh | Magnetic coupling element with a magnetic bearing function |
| US11804767B2 (en) | 2018-01-24 | 2023-10-31 | Kardion Gmbh | Magnetic coupling element with a magnetic bearing function |
| 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 |
| US12005248B2 (en) | 2018-05-16 | 2024-06-11 | Kardion Gmbh | Rotor bearing system |
| US11754075B2 (en) | 2018-07-10 | 2023-09-12 | Kardion Gmbh | Impeller for an implantable, vascular support system |
| 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 |
| US11944805B2 (en) | 2020-01-31 | 2024-04-02 | Kardion Gmbh | Pump for delivering a fluid and method of manufacturing a pump |
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