CN104065230A - Efficient high-stability motor applied to artificial heart - Google Patents
Efficient high-stability motor applied to artificial heart Download PDFInfo
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- CN104065230A CN104065230A CN201410281336.XA CN201410281336A CN104065230A CN 104065230 A CN104065230 A CN 104065230A CN 201410281336 A CN201410281336 A CN 201410281336A CN 104065230 A CN104065230 A CN 104065230A
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- motor
- cup
- artificial heart
- sleeve
- permanent magnet
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Abstract
The invention discloses an efficient high-stability motor applied to an artificial heart. The motor comprises a rotor and a stator. The stator is of a hollow cup structure and comprises a sleeve and a winding cup, and the winding cup is an inclined-winding-type hollow cup coil. The rotor comprises a pump body and a permanent magnet, the pump body is arranged in the sleeve in a penetrating mode, the pump body, except the permanent magnet, is made of non-magnetic materials, the structure eliminates electric energy losses, caused due to the fact that a rotor magnetic core forms eddies, of a traditional motor, meanwhile, the weight and the rotational inertia of the motor are greatly reduced, the size is smaller, mechanical energy losses of the rotor itself are reduced, and the rotation speed and the efficiency of the motor are improved. In addition, the motor has excellent control and dragging characteristics, the rotation speed of the motor can be adjusted sensitively, more accurate and more reliable blood flow and blood pressure can be output, and the motor is rapid and accurate to adjust, high in reliability, good in stability, smooth in operation, resistant to jolt and vibration, low in noise, low in vibration, long in service life and capable of meeting the driving requirement of implantable artificial heart blood pumps.
Description
Technical field
The present invention relates to a kind of motor, particularly a kind of high-effect high stability motor that is applied to artificial heart.
Background technology
World Health Organization's statistics demonstration, angiocardiopathy is the first killer who threatens human health always, accounts for 30% left and right of the total death toll in the whole world, the effective way for the treatment of heart failure in latter stage at end is heart transplant or adopts implanted ventricular assist device.Although heart transplant has obtained very ten-strike, heart donor problem is difficult to solve, and develops long-term implantable Small blood pump very important and urgent.The blood pump of clinical practice is now mainly taking axial-flow pump as main, the flow performance of axial-flow pump is better than centrifugal pump, larger CBF can be provided, but current axial-flow pump mostly is traditional handicraft manufacture, the conventional motor of the many employings of its drive motors, conventional motor is difficult to reaching a very high rotating speed, is difficult to ensure enough blood flows and blood pressure, and its stability, reliability, operating efficiency, volume, run curve etc. are all difficult to reach human implantable and do the requirement of artificial heart drive motors.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of exert oneself large, volume is little, reliability is high, good stability, implantable drag cup brushless electric machine that operating efficiency is high.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high-effect high stability motor that is applied to artificial heart, comprise rotor and stator, described stator is a drag cup knot, it comprises sleeve, is set in the coiling cup of sleeve periphery, described rotor comprises the pump housing and is embedded in the permanent magnet of pump body center, the described pump housing is all to adopt non-magnet_conductible material to make except permanent magnet, and the described pump housing is located within sleeve and can relatively rotates, and described coiling cup is a crossing formula hollow cup coil.
Described stator also comprises the casing that is set in the peripheral silicon steel sheet group of coiling cup, is arranged on silicon steel sheet group outside, and described casing two ends are respectively arranged with and coiling cup, silicon steel sheet group can be enclosed in to protecgulum, bonnet between casing, sleeve.
Described coiling cup one end is provided with the PCB circuit board being connected with the line group wiring of the cup that winds the line, and this PCB circuit board is connected with external power source or motor-drive circuit by lead-in wire.
Described permanent magnet is made up of NdFeB material.
The part of the described pump housing except permanent magnet all adopts titanium alloy material to make.
The invention has the beneficial effects as follows: a kind of high-effect high stability motor that is applied to artificial heart, comprise rotor and stator, described stator is a drag cup knot, it comprises sleeve, be set in the coiling cup of sleeve periphery, described coiling cup is a crossing formula hollow cup coil, described rotor comprises the pump housing and is embedded in the permanent magnet of pump body center, the described pump housing is located within sleeve and can relatively rotates, the pump housing is all to adopt non-magnet_conductible material to make except permanent magnet, this structure has thoroughly been eliminated conventional motors because rotor conducting magnet core forms the electric energy loss that eddy current causes, its weight and moment of inertia significantly reduce simultaneously, volume is less, reduce the mechanical energy loss of rotor self, improve rotating speed and the operating efficiency of motor, because making the service performance of motor, the structural change of rotor obtains very big improvement, not only there is outstanding characteristics of energy saving, what is more important possessed traditional iron core motor be beyond one's reach control and drag characteristics, motion steadily, reliability is high, good stability.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is schematic cross-section of the present invention;
Fig. 2 is the coiling schematic diagram of coiling cup of the present invention.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 1, Fig. 2 are the structural representations of a specific embodiment of the present invention, as shown in the figure, a kind of high-effect high stability motor that is applied to artificial heart, comprise rotor and stator, described stator is a drag cup knot, it comprises sleeve 1, is set in the coiling cup 2 of sleeve 1 periphery, described rotor comprises the pump housing 3 and is embedded in the permanent magnet 4 of the pump housing 3 inside center positions, the described pump housing 3 is located within sleeve 1 and can relatively rotates, and described coiling cup 2 is a crossing formula hollow cup coil.
As shown in the figure, described stator also comprise be set in coiling cup 2 peripheries silicon steel sheet group 5, be arranged on the casing 6 in silicon steel sheet group 5 outsides, described casing 6 two ends are respectively arranged with and coiling cup 2, silicon steel sheet group 5 can be enclosed in to protecgulum 71, bonnet 72 between casing 6, sleeve 1, described coiling cup 2 one end are provided with the PCB circuit board 21 being connected with the line group wiring of the cup 2 that winds the line, and this PCB circuit board 21 is connected with external power source or motor-drive circuit by lead-in wire 8.
In the present invention, described permanent magnet 4 is made up of NdFeB material, reduce the volume of the pump housing 3, the pump housing 3 is all to adopt non-magnet_conductible material to make except permanent magnet 4, in the present embodiment, preferably adopts titanium alloy material to make, because titanium alloy is magnetic conduction not, therefore can obtain larger transfer of torque, and titanium alloy quality is light and have good biocompatibility, certainly in implementation process, also can adopt the alloy material such as niobium, tantalum or other novel non-magnet_conductible materials.
In the present invention, this rotor structure has thoroughly been eliminated conventional motors because rotor conducting magnet core forms the electric energy loss that eddy current causes, its weight and moment of inertia significantly reduce simultaneously, volume is less, has reduced the mechanical energy loss of rotor self, improves rotating speed and the operating efficiency of motor, ensure enough blood flow and blood pressure, motor itself does not have excitation loss and magnetic brush loss, has eliminated multi-stage speed-reducing loss, and integrated power-saving rate reaches 20%-60%; And be brushless structure, can not produce spark; Reliability is high, good stability, running are level and smooth, and the resistance to vibrations of jolting, noise are little, it is little to shake, running is level and smooth, and long service life, meets the driving requirement of implantable artificial heart blood pump.
And in the present invention, obtain very big improvement because the structural change of rotor makes the service performance of motor, had the following advantages:
1, energy-efficient performance is good: energy conversion efficiency is very high, and its maximal efficiency is generally more than 70%, and part can reach more than 90%;
2, control characteristic is good: adopt brushless tooth slot structure, motor response is sensitive, rapidly, response is exceedingly fast for starting, braking, and mechanical time constant is less than 28 milliseconds, portioned product can reach in 10 milliseconds, under the state of running up, still can coordinate control system, the rotating speed of motor is carried out to sensitive adjusting, can export more accurate blood flow and blood pressure reliably, regulate precisely quick;
3, drag characteristics is good: motor operation stability of the present invention is very reliable, and the fluctuation of rotating speed is very little, ensures the reliable and stable of blood transport.
Above better enforcement of the present invention is illustrated; certainly; the present invention can also adopt form different from the embodiment described above; the conversion being equal to that those of ordinary skill in the art do under the prerequisite without prejudice to spirit of the present invention or accordingly change, all should belong in protection scope of the present invention.
Claims (5)
1. one kind is applied to the high-effect high stability motor of artificial heart, comprise rotor and stator, it is characterized in that: described stator is a drag cup knot, it comprises sleeve (1), is set in the peripheral coiling cup (2) of sleeve (1), described rotor comprises the pump housing (3) and is embedded in the permanent magnet (4) of the pump housing (3) inside center position, the described pump housing (3) is all to adopt non-magnet_conductible material to make except permanent magnet (5), the described pump housing (3) is located within sleeve (1) and can relatively rotates, and described coiling cup (2) is a crossing formula hollow cup coil.
2. a kind of high-effect high stability motor that is applied to artificial heart according to claim 1, it is characterized in that: described stator also comprises the casing (6) that is set in the peripheral silicon steel sheet group (5) of coiling cup (2), is arranged on silicon steel sheet group (5) outside, described casing (6) two ends are respectively arranged with and coiling cup (2), silicon steel sheet group (5) can be enclosed in to protecgulum (71), bonnet (72) between casing (6), sleeve (1).
3. a kind of high-effect high stability motor that is applied to artificial heart according to claim 1, it is characterized in that: described coiling cup (2) one end is provided with the PCB circuit board (21) being connected with the line group wiring of the cup (2) that winds the line, and this PCB circuit board (21) is connected with external power source or motor-drive circuit by lead-in wire (8).
4. a kind of high-effect high stability motor that is applied to artificial heart according to claim 1, is characterized in that: described permanent magnet (4) is made up of NdFeB material.
5. a kind of high-effect high stability motor that is applied to artificial heart according to claim 1, is characterized in that: the part of the described pump housing (3) except permanent magnet (4) all adopts titanium alloy material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281336.XA CN104065230A (en) | 2014-06-20 | 2014-06-20 | Efficient high-stability motor applied to artificial heart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281336.XA CN104065230A (en) | 2014-06-20 | 2014-06-20 | Efficient high-stability motor applied to artificial heart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104065230A true CN104065230A (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410281336.XA Pending CN104065230A (en) | 2014-06-20 | 2014-06-20 | Efficient high-stability motor applied to artificial heart |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888294A (en) * | 2015-05-08 | 2015-09-09 | 淮海工业集团有限公司 | Cardiac pump with slotless and brushless permanent magnet direct current motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1347585A (en) * | 1999-04-20 | 2002-05-01 | 于利希研究中心有限公司 | Rotor device |
| US20020102169A1 (en) * | 1996-02-20 | 2002-08-01 | Kriton Medical, Inc. | Sealless rotary blood pump |
| CN1692229A (en) * | 2002-12-26 | 2005-11-02 | 索尼株式会社 | Hydrodynamic bearing-type pump |
| CN202892503U (en) * | 2012-08-28 | 2013-04-24 | 李国荣 | Magnetic axis drive type cardiac apex miniature centrifugal pump |
| CN203522488U (en) * | 2013-06-21 | 2014-04-02 | 东莞市朗亿机电科技有限公司 | Coreless direct current brushless motor used for steering engine |
| CN203984210U (en) * | 2014-06-20 | 2014-12-03 | 冯森铭 | A kind of implantable drag cup brushless electric machine |
-
2014
- 2014-06-20 CN CN201410281336.XA patent/CN104065230A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020102169A1 (en) * | 1996-02-20 | 2002-08-01 | Kriton Medical, Inc. | Sealless rotary blood pump |
| CN1347585A (en) * | 1999-04-20 | 2002-05-01 | 于利希研究中心有限公司 | Rotor device |
| CN1692229A (en) * | 2002-12-26 | 2005-11-02 | 索尼株式会社 | Hydrodynamic bearing-type pump |
| CN202892503U (en) * | 2012-08-28 | 2013-04-24 | 李国荣 | Magnetic axis drive type cardiac apex miniature centrifugal pump |
| CN203522488U (en) * | 2013-06-21 | 2014-04-02 | 东莞市朗亿机电科技有限公司 | Coreless direct current brushless motor used for steering engine |
| CN203984210U (en) * | 2014-06-20 | 2014-12-03 | 冯森铭 | A kind of implantable drag cup brushless electric machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888294A (en) * | 2015-05-08 | 2015-09-09 | 淮海工业集团有限公司 | Cardiac pump with slotless and brushless permanent magnet direct current motor |
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Application publication date: 20140924 |
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| RJ01 | Rejection of invention patent application after publication |