CN109904955A - A kind of integration external artificial heart's driving device - Google Patents
A kind of integration external artificial heart's driving device Download PDFInfo
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- CN109904955A CN109904955A CN201910127519.9A CN201910127519A CN109904955A CN 109904955 A CN109904955 A CN 109904955A CN 201910127519 A CN201910127519 A CN 201910127519A CN 109904955 A CN109904955 A CN 109904955A
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- rotor
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- artificial heart
- driving device
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Abstract
A kind of integration external artificial heart's driving device, belongs to biomedical engineering field.The driving device is made of shell, integrated permanent-magnet rotor, rotor-position sensor, stator winding and magnetic masking layer.Wherein integrated permanent-magnet rotor passes through axis and cage connection；Stator winding is fixed in the tail portion of integrated permanent-magnet body rotor；Rotor-position sensor is installed in integrated permanent-magnet rotor head；Fixed magnetic masking layer outside stator winding.Generating rotating excitation field by stator winding drives integrated permanent-magnet rotor to be rotated, and then is outwardly formed rotating excitation field by the part that integrated permanent-magnet rotor is exposed to except stator winding and magnetic masking layer, for driving implanted artificial heart to run.The device can be effectively reduced the problems such as fever and vibration that traditional external artificial heart's driving device occurs, effectively improve the stability and safety of the external drive system of artificial heart.
Description
Technical field
The present invention is a kind of integrated external artificial heart's driving device, belongs to biomedical engineering field, particular for
The non-contact type body external magnetic drive system of artificial heart pump.
Technical background
Heart failure (heart failure) is a kind of disease for seriously threatening human health.For the most effective treatment side of advanced heart failure
Method is that heart transplant and artificial heart assist.Since heart transplant is much unable to satisfy the needs of heart failure treatment, market is for people
The demand of work heart is continuously increased, thus its market prospects are very good.In order to reduce traditional artificial heart for patient's
Damage, is devised using the artificial heart driving device of external Magnetic driving mode.This design fundamentally solves biography
The problems such as infection caused by the temperature rise of the implanted artificial heart of system artificial heart and percutaneous leads.For the artificial of this type
Heart, a variety of external drive systems are devised.Patent 2013104054966 designs a kind of self-balancing artificial heart driving system
System, solves the problems, such as the autoregistration between external artificial heart's driving equipment and implanted artificial heart.Patent 2013104056232
The external drive system of artificial heart for designing a kind of multistage solves the problems, such as external drive system driving apart from inadequate.Although
Foregoing invention effectively raises the reliability of external drive system, but external drive system is all made of separation in these inventions
Formula design drags permanent magnet load rotation by shaft coupling or the direct-connected mode of long axis using motor and generates turn magnetic field.It is this
Design has at following 3 points: first, using motor drag, increases the volume and weight of integral device, is unfavorable for device
It wears；Second, it is connected using shaft coupling or long axis mode, increases vibration and the noise level of equipment, and long-play
Afterwards, the reliability of shaft coupling can be substantially reduced, to bring security risk.Third, since alternation can be generated when permanent magnet rotation
Magnetic field, this alternating magnetic field can generate vortex at motor housing, and then generate apparent fever phenomenon, influence equipment operation
Reliability.
Summary of the invention
In order to solve the above problem of the external drive system of artificial heart, the present invention designs a kind of external artificial heart of integration
Motor and permanent magnet load outside conventional bulk in drive system is merged by dirty driving device, reduces the volume and again of integral device
Amount cancels shaft coupling and improves long-term running reliability, designs solution equipment heating with magnetic masking layer using non-metal shell and asks
Topic.
The technical solution adopted by the present invention is as shown in Figure 1.
The driving device includes shell (1), integrated permanent-magnet rotor (4), rotor-position sensor (5), stator winding (2)
And magnetic masking layer (3)；Wherein integrated permanent-magnet rotor (4) is long shaft-like structure, and both ends of the surface connect by the way that axis and shell are fixed
It connects, and integrated permanent-magnet rotor can be rotated around itself axis inside the shell；Integrated permanent-magnet rotor (4) extends axis direction and is divided into not
With two sections of column structures of diameter, one end is the column structure being relatively large in diameter, referred to as head；And the other end, that is, tail portion uses diameter
Lesser column structure, the size of above-mentioned diameter are opposite；Integrated permanent-magnet rotor (4) radial magnetizing forms a pair of of magnetic pole；
In the circumferential outer stator winding (2) for being equipped with axis cyclic structure together of integrated permanent-magnet rotor (4) small column structure, stator around
There is gap between group (2) and small column structure, in the circumferential outer magnetic screen for being equipped with axis cyclic structure together of stator winding (2)
Layer (3)；It is equipped with a rotor-position sensor (5) on the end face on integrated permanent-magnet rotor (4) head, turns for detecting permanent magnetism
Son rotation angle.
Integrated permanent-magnet rotor (4), rotor-position sensor (5), stator winding (2) and magnetic masking layer (3) are located at outer
In shell (1), one end end face and the shell (1) of stator winding (2) are fixed together；Magnetic masking layer (3) is close to stator winding (2).
The driving device further includes controller, and stator winding is connect with controller, and controller controls stator winding and generates
Rotating excitation field, rotor-position sensor are connect with controller.Generating rotating excitation field by stator winding drives integrated permanent-magnet to turn
Son is rotated, and then is outwardly formed rotation by the part that integrated permanent-magnet rotor is exposed to except stator winding and magnetic masking layer
Magnetic field.
Shell is made of nonmetallic materials.
Stator winding is made of 3 integral multiple coil, using Y type or △ type connection type.
Device is equipped with magnetic masking layer in stator winding outer layer, for increasing central magnetic field intensity.Magnetic masking layer has high magnetic conductance
Rate metal tile is overrided to form, insulated from each other between metal tile, with to avoid vortex, reduces fever.
Stator winding is fixed in the tail portion of integrated permanent-magnet body rotor；In the fixed position sensor in permanent magnet head；It is fixed
Fixed magnetic masking layer outside sub- winding；Stator winding generates rotating excitation field under peripheral control unit control, via its external magnetic
After shielded layer carries out magnetic field focusing, stronger rotating excitation field is generated at interior integrally p-m rotor；P-m rotor is rotating
Rotation is synchronized around central axis under the drive of magnetic field, so that rotating excitation field is generated on equipment periphery, it is intracorporal for driving
Artificial heart.In addition, rotor-position sensor is installed in integrated permanent-magnet rotor head, for detecting p-m rotor rotation angle
Degree, and peripheral control unit is fed back to, guarantee that rotor can continue to rotate.
Detailed description of the invention
A kind of Fig. 1: integration external artificial heart's driving device.Wherein 1. non-metal shell；2. stator winding；3. magnetic cup
Cover layer；4. integrated permanent-magnet rotor；5. rotor-position sensor.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, but the present invention is not limited to following embodiments.
Embodiment 1
A kind of integrated external artificial heart's driving device of the present invention is shown in Fig. 1, in: non-metal shell outer diameter 60mm is used
The production of nonmetallic materials polysulfones, wall thickness 4mm, axial length 65mm；Stator winding uses 3 phase, 9 grades of Y type coil windings, line footpath
0.2mm, stator winding outer diameter 48mm, internal diameter 30mm；Magnetic masking layer is overrided to form using 0.2mm thickness silicon steel sheet, silicon steel lamella
It is insulated between layer using polyurethane, magnetic masking layer outer diameter 52mm, internal diameter 48mm, axial length 15mm；Integrated permanent-magnet
Rotor uses neodymium iron boron N52 material, radial magnetizing, a pair of of magnetic pole, head diameter 50mm, axial length 45mm, tail diameter
30mm, axial length 15mm；Rotor-position sensor is mounted on integrated permanent-magnet rotor head, quantity 3, the relatively peace at center
Filling angle is 120 °.Generating rotating excitation field by stator winding drives integrated permanent-magnet rotor to be rotated, and then by integration
The part that p-m rotor is exposed to except stator winding and magnetic masking layer is outwardly formed rotating excitation field, for the artificial heart in driving body
Dirty operation.The device can be effectively reduced the problems such as fever and vibration that traditional external artificial heart's driving device occurs, effectively
Improve the stability and safety of the external drive system of artificial heart.
It is found through experiments that, the revolving speed of the device may be up to 6000rpm, 3 DEG C of shell temperature rise in operational process；Entirety is without bright
Aobvious vibration and noise；Continuous 30 days operation fault-frees, and can artificial heart except stabilized driving distance 150mm, meet
Artificial heart drives demand.
Claims (7)
1. a kind of integration external artificial heart's driving device, which is characterized in that the driving device includes shell (1), integration
P-m rotor (4), rotor-position sensor (5), stator winding (2) and magnetic masking layer (3)；Wherein integrated permanent-magnet rotor
It (4) is long shaft-like structure, both ends of the surface are fixedly connected by axis with shell, and integrated permanent-magnet rotor can be inside the shell around certainly
The rotation of body axis；Integrated permanent-magnet rotor (4) extends two sections of column structures that axis direction is divided into different-diameter, and one end is to be relatively large in diameter
Column structure, referred to as head；And the other end, that is, tail portion uses the lesser column structure of diameter, the size of above-mentioned diameter is opposite
's；Integrated permanent-magnet rotor (4) radial magnetizing forms a pair of of magnetic pole；In the circumferential direction of integrated permanent-magnet rotor (4) small column structure
It is equipped with the stator winding (2) of axis cyclic structure together outside, has gap between stator winding (2) and small column structure, in stator
The circumferential outer magnetic masking layer (3) for being equipped with axis cyclic structure together of winding (2)；At the end on integrated permanent-magnet rotor (4) head
Face is equipped with a rotor-position sensor (5), for detecting p-m rotor rotation angle.
2. a kind of integrated external artificial heart's driving device described in accordance with the claim 1, which is characterized in that integrated permanent-magnet
Rotor (4), rotor-position sensor (5), stator winding (2) and magnetic masking layer (3) are located in shell (1), stator winding (2)
One end end face be fixed together with shell (1)；Magnetic masking layer (3) is close to stator winding (2).
3. a kind of integrated external artificial heart's driving device described in accordance with the claim 1, which is characterized in that the driving dress
Setting further includes controller, and stator winding is connect with controller, and controller controls stator winding and generates rotating excitation field, and rotor-position passes
Sensor is connect with controller.
4. a kind of integrated external artificial heart's driving device described in accordance with the claim 1, which is characterized in that shell is by non-gold
Belong to material composition.
5. a kind of integrated external artificial heart's driving device described in accordance with the claim 1, which is characterized in that stator winding by
3 integral multiple coil composition, using Y type or △ type connection type.
6. a kind of integrated external artificial heart's driving device described in accordance with the claim 1, which is characterized in that device is in stator
Winding outer layer is equipped with magnetic masking layer, for increasing central magnetic field intensity；Magnetic masking layer has high magnetic permeability metal tile to be overrided to form, gold
It is insulated from each other between category watt, with to avoid vortex, reduce fever.
7. a kind of working method of integrated external artificial heart's driving device described in accordance with the claim 1, which is characterized in that
Stator winding is fixed in the tail portion of integrated permanent-magnet body rotor；In the fixed position sensor in permanent magnet head；Outside stator winding
Magnetic masking layer is fixed in portion；Stator winding generates rotating excitation field under peripheral control unit control, via its external magnetic masking layer into
After row magnetic field focuses, stronger rotating excitation field is generated at interior integrally p-m rotor；P-m rotor drives in rotating excitation field
Under around central axis synchronize rotation, so that rotating excitation field is generated on equipment periphery, for driving intracorporal artificial heart.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910127519.9A CN109904955A (en) | 2019-02-20 | 2019-02-20 | A kind of integration external artificial heart's driving device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910127519.9A CN109904955A (en) | 2019-02-20 | 2019-02-20 | A kind of integration external artificial heart's driving device |
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| CN109904955A true CN109904955A (en) | 2019-06-18 |
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| CN201910127519.9A Pending CN109904955A (en) | 2019-02-20 | 2019-02-20 | A kind of integration external artificial heart's driving device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111467682A (en) * | 2020-04-15 | 2020-07-31 | 东莞市银磁磁性材料有限公司 | Spiral magnetic field generating method |
| CN114225212A (en) * | 2021-12-14 | 2022-03-25 | 利为惠德无锡医疗科技有限公司 | Non-contact driving system for artificial heart |
Citations (5)
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|---|---|---|---|---|
| US6387125B1 (en) * | 1992-06-23 | 2002-05-14 | Sun Medical Technology Research Corporation | Auxiliary artificial heart of an embedded type |
| CN2899800Y (en) * | 2006-04-06 | 2007-05-16 | 北京工业大学 | Artificial heart energy system |
| CN101106313A (en) * | 2007-06-15 | 2008-01-16 | 清华大学 | A magnetic drive device for generating rotary magnetic field |
| CN107261231A (en) * | 2017-07-25 | 2017-10-20 | 中国医学科学院阜外医院 | A kind of Axial feedback controls magnetic levitation axial flow blood pump |
| CN108635630A (en) * | 2018-05-29 | 2018-10-12 | 长治市久安人工心脏科技开发有限公司 | A kind of afterload intelligence control system of artificial heart |
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2019
- 2019-02-20 CN CN201910127519.9A patent/CN109904955A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6387125B1 (en) * | 1992-06-23 | 2002-05-14 | Sun Medical Technology Research Corporation | Auxiliary artificial heart of an embedded type |
| CN2899800Y (en) * | 2006-04-06 | 2007-05-16 | 北京工业大学 | Artificial heart energy system |
| CN101106313A (en) * | 2007-06-15 | 2008-01-16 | 清华大学 | A magnetic drive device for generating rotary magnetic field |
| CN107261231A (en) * | 2017-07-25 | 2017-10-20 | 中国医学科学院阜外医院 | A kind of Axial feedback controls magnetic levitation axial flow blood pump |
| CN108635630A (en) * | 2018-05-29 | 2018-10-12 | 长治市久安人工心脏科技开发有限公司 | A kind of afterload intelligence control system of artificial heart |
Non-Patent Citations (1)
| Title |
|---|
| 曾培，茹伟民，袁海宇，钱坤喜: "人工心脏血泵驱动电机的控制研究", 《中国生物医学工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111467682A (en) * | 2020-04-15 | 2020-07-31 | 东莞市银磁磁性材料有限公司 | Spiral magnetic field generating method |
| CN114225212A (en) * | 2021-12-14 | 2022-03-25 | 利为惠德无锡医疗科技有限公司 | Non-contact driving system for artificial heart |
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Application publication date: 20190618 |