CN106593891B - A kind of magnetic driving equipment and electromagnetic drive pump - Google Patents
A kind of magnetic driving equipment and electromagnetic drive pump Download PDFInfo
- Publication number
- CN106593891B CN106593891B CN201611244533.XA CN201611244533A CN106593891B CN 106593891 B CN106593891 B CN 106593891B CN 201611244533 A CN201611244533 A CN 201611244533A CN 106593891 B CN106593891 B CN 106593891B
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- magnetic
- coil
- helical conduit
- block
- helical
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
- F04D13/027—Details of the magnetic circuit
Abstract
Related magnetic driving equipment and electromagnetic drive pump according to the present invention, including helical conduit, the pump housing, magnetic block, the first valve group, the second valve group and control circuit；Shape is in the plural groups coil block that symmetrical stepped helical conduit includes stacked offset, the successive time sequencing of the electric current of different coil blocks is led in control, so that a plurality of coil blocks generate the superposition magnetic field of opposite magnetic pole corresponding with magnetic block in helical conduit, magnetic block makees straight reciprocating motion along helical conduit in superposition magnetic field.Electromagnetic drive pump provided by the invention can generate alternately changing magnetic field in helical guidewire lumen, make to pump intracorporal magnetic block and do that there is the reciprocating motion for simulating heartbeat rule under the action of the magnetic field, can be avoided damage of the continuous pouring pump blood of centrifugal pump to tissue internal organs and brain.
Description
Technical field
The invention belongs to electromagnetic arts, and in particular to a kind of magnetic drive structure.
Background technique
Extracorporeal membrane oxygenation (exteacorporeal membrane oxygenation, ECMO) is one kind to follow in vitro
Loop system is its basic equipment, a kind of auxiliary treatment means for being operated and being managed using Cardiopulmonary Bypass.ECMO be by
Internal venous blood guides to external progress film oxygen conjunction, then into the human body by the injection of ECMO blood pump.Clinically, the main needle of ECMO technology
To the patient of respiratory insufficiency and cardiac dysfunction, patient's cardiopulmonary can be made adequately to be stopped by extracorporal circulatory system
Breath, effectively improves patients with hypoxemia.Core component of the blood pump as ECMO system, determines ECMO to a certain extent
The development of technology.
It common are roller press type blood pump and centrifugal blood pump in ECMO at present.Roll-in pump is always that extracorporal circulatory system branch is most normal
Blood pump, roll-in pump begin to use from nineteen thirty-five, and its advantages are that independent preloading can provide a constant flow,
Relatively children is suitble to use.Children use Shi Kezuo small-flow precise thin tuning, make to be detached from trained also more convenient.But due to its machinery
The influence of structure, so that roll-in pump is also easy to produce aeroembolism and micro- bolt, easily pump is de-.There is investigation display roll-in pump to have higher failure of pump rate
For 56% height.Centrifugal pump has as second generation blood pump to be improved well, and the working principle of centrifugal pump is using in rotary body
The heart generates negative pressure, high pressure is generated around rotary body, so that there are pressure differences for input/output port, to push blood flow.Current
Third generation magnetically levitated centrifugal pump uses magnetic levitation technology, so that the hemolytic of blood pump further reduces, while magnetic suspension skill
Art avoids mechanical structure and contacts with the direct of blood, so that the incidence of micro- bolt is reduced, but its shortcoming is that, centrifugal pump exists
Continuous pouring is provided when pumping blood, this causes the damage to tissue internal organs and brain to a certain extent.
Summary of the invention
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of magnetic driving equipment and electromagnetism
Transfer tube.
The present invention provides a kind of magnetic driving equipments, have the feature that, lead including shape in symmetrical stepped
The helical conduit that line is coiled into；The control circuit being connect with helical conduit, wherein helical conduit includes answering for stacked offset
The pipe thickness of array coil block, helical conduit is successively decreased from two ends of helical conduit to middle part, control circuit control
System leads to the successive time sequencing of the electric current of different coil blocks, so that a plurality of coil blocks generate in solenoid and magnetic
Property the corresponding opposite magnetic pole of block superposition magnetic field, magnetic block along helical conduit makees straight reciprocating motion in superposition magnetic field.
It in magnetic driving equipment provided by the invention, can also have the following features: wherein, coil block includes multiple
The coil of several layers of superposition.
In addition, can also have the following features: wherein in magnetic driving equipment provided by the invention, the spiral shell of coil
Line coiling direction is consistent.
In addition, can also have the following features: wherein, coil block in magnetic driving equipment provided by the invention
It is provided with input terminal and output end, is to be connected in series, and all connect to the control circuit between plural groups coil block.
In addition, can also have the following features: wherein in magnetic driving equipment provided by the invention, helical conducting wire
Pipe has 5 layer line circles.
The present invention provides a kind of electromagnetic drive pumps, have the feature that, including above-mentioned magnetic driving equipment；Pump
Body is arranged in helical conduit, is in the form of a column, internal to have cavity；Permanent magnetic slider in cavity is set；And respectively with
The first valve group and the second valve group that pump housing both ends are connected, wherein the first valve group and the second valve group include two not in the same direction
Cavity is separated into two working chambers by the check valve being connected respectively with the pump housing, permanent magnetic slider.
In addition, can also have the following features: wherein in electromagnetic drive pump provided by the invention, permanent magnetic slider packet
It includes permanent magnet and is separately positioned on the liquid capsule at permanent magnet both ends.
In addition, can also have the following features: wherein in electromagnetic drive pump provided by the invention, permanent magnet is used
NdFeB rear-earth material is made.
In addition, can also have the following features: wherein, liquid capsule is by using in electromagnetic drive pump provided by the invention
Pellosil is made, and physiological saline is wrapped up in liquid capsule.
The action and effect of invention
Involved electromagnetic drive pump according to the present invention, including magnetic driving equipment, the pump housing, magnetic block, the first valve group, second
Valve group；Magnetic driving equipment includes the helical conduit that shape is coiled into symmetrical stepped conducting wire, and helical conduit includes mistake
The plural groups coil block that position stacks, the pipe thickness of helical conduit are successively decreased from two ends of helical conduit to middle part,
The successive time sequencing of the electric current of different coil blocks is led in control, so that a plurality of coil blocks produce in helical conduit
The superposition magnetic field of raw opposite magnetic pole corresponding with magnetic block, magnetic block make linear reciprocation along helical conduit in superposition magnetic field
Movement.
Magnetic driving equipment provided by the invention obtains magnetic field of the goal by design loop construction, using electromagnetic force as driving
Power is different from other drive control principles, target mechanism is driven by magnetic field force, reduces the volume of equipment.Further
Ground, electromagnetic drive pump provided by the invention can control the alternating changing magnetic field generated in helical guidewire lumen, make in the pump housing
Magnetic block done under the action of the magnetic field with simulation heartbeat rule reciprocating motion, can be avoided the continuous of centrifugal pump
Damage of the charge pump blood to tissue internal organs and brain.
Detailed description of the invention
Fig. 1 is the current equivalence model schematic of magnet in the embodiment of the present invention；
Fig. 2 is the component schematic diagram of magnetic induction intensity in the embodiment of the present invention；
Fig. 3 is electromagnetic drive pump internal structure chart schematic diagram in the embodiment of the present invention；
Fig. 4 is helical conduit configuration entirety sectional view in the embodiment of the present invention；
Fig. 5 is first coil component stacked section schematic diagram in the embodiment of the present invention；
Fig. 6 is the second coil block stacked section schematic diagram in the embodiment of the present invention；
Fig. 7 is tertiary coil component stacked section schematic diagram in the embodiment of the present invention；
Fig. 8 is control circuit schematic diagram in the embodiment of the present invention；
Fig. 9 is stress rule schematic diagram of the magnetic block in magnetic field in the embodiment of the present invention；
Figure 10 is the magnetic induction intensity superposition schematic diagram in the embodiment of the present invention in helical guidewire lumen inner axis；
Figure 11 is the force diagram that magnetic block is subject in step 1 in the embodiment of the present invention；And
Figure 12 is the force diagram that magnetic block is subject in step 2 in the embodiment of the present invention.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to be specifically addressed magnetic driving equipment provided by the present invention.
Embodiment
Electromagnetic drive pump 100 includes helical conduit 10, pump 20 and control circuit 30.
Permanent magnet can be equivalent to circular electric current according to the current equivalence model of permanent magnet, as shown in Figure 1, when circular electric current exists
In the magnetic field of magnetic induction intensity monotonic increase, since there are radial field components, as shown in Fig. 2, in magnetic field magnetic induction intensity point
In amount according to the stress of Ampère circuital theorem circular electric current be 0, can be sentenced on magnetic induction intensity component according to left hand theorem
Disconnected circular electric current is always by the effect of Ampere force, the direction that the direction of active force increases towards magnetic induction intensity always, i.e., with lead
Number B ' is positively correlated.Wherein, Jm is volume current density, and Jms is surface current density, and dl indicates differential, and d is differential sign, and l is spiral shell
Spool length, B are magnetic induction intensity, and BH indicates the horizontal component of magnetic induction intensity, and BV indicates the vertical component of magnetic induction intensity,
I indicates electric current.
As shown in figure 3, helical conduit 10 is in symmetrical stairstepping solenoid, pump 20 is arranged in helical conduit 10
In chamber.
As shown in figure 4, helical conduit 10 includes first coil component 11, the second coil block 12, tertiary coil component
13。
As shown in figure 5, first coil component 11 includes 1a-1b, 2a-2b, 3a-3b, 1a-1b is indicated by a conducting wire coiling
First layer solenoid, 2a-2b indicate second layer solenoid, 3a-3b indicate third layer solenoid, analogize by this rule.Wherein
1a and 1b indicates this layer of solenoidal two pin.11 structure of first coil component be pyramid superposition, from the inside to surface according to
The order coiling of number 1-2-3 in label.
As shown in fig. 6, the second coil block 12 includes 2e-2f, 3e-3f, 4e-4f, 5e-5f., the second coil block 12
Pin letter f holds level with both hands together, is superimposed order coiling of the order according to Arabic numerals 2-3-4-5, the second coil block from the inside to surface
12 with first coil component 11 is mutually embedding constitutes stair-stepping structure；
As shown in fig. 7, tertiary coil component 13 includes 2c-2d, 3c-3d, 4c-4d, 5c-5d.Tertiary coil component 13
Pin letter d holds level with both hands together, is superimposed order coiling of the order according to Arabic numerals 2-3-4-5, tertiary coil component from the inside to surface
13 mutually embedding constitute stair-stepping structure with first group.
The coiling direction of the present embodiment middle line coil assembly is consistent, and any rectangular strip lattice indicate coil on section in Fig. 4
Section, every layer line circle generate magnetic field in lumen, can be obtained by magnetic field of the goal after being overlapped mutually.In order to enable in lumen
Magnetic field magnetic induction intensity gaining rate it is relatively stable, the present embodiment using 5 section of 5 layered structure of 150mm pipe (magnetic induction intensity gaining rate with
The stress of permanent magnet is positively correlated in lumen).The solenoid overall length of first coil component 11 is 150mm, that is, 1a-1b sections of solenoids
Length, 2a-2b sections of solenoid lengths are 90mm, and 3e-3f, 4e-4f, 3c-3d, 4c-4d sections of solenoid lengths are 60mm,
3a-3b, 2e-2f, 5e-5f, 2c-2d, 5c-5d sections of solenoidal length are 30mm；Diameter of wire used is 0.4mm；Pass through
Direct current size be 1A；Enclosed helical lumen diameter is 40mm.
Pump 20 includes the pump housing 21, permanent magnetic slider 22, the first valve group 23 and the second valve group 24.
The pump housing 21 is in the form of a column, internal to have cavity, and the pump housing 20 is arranged in the inner cavity of helical conduit 10, outer wall patch
Close the inner wall of helical conduit 10.
Permanent magnetic slider 22 is arranged in the cavity of the pump housing 21, including permanent magnet 221 and two liquid capsules 222, permanent magnetic slider 22
The cavity of the pump housing 21 is separated into closed left working chamber 211 and right working chamber 212.
Permanent magnet 221, it is cylindrical in embodiment, it is made of NdFeB rear-earth material.
Liquid capsule 222 is separately positioned on the both ends of permanent magnet 221, and liquid capsule 222 is made of pellosil in embodiment, liquid capsule
Physiological saline is enclosed in 222.
One end (left end in Fig. 3) of the pump housing 21 is arranged in first valve group 23, including unidirectionally goes out valve 231, unidirectionally into valve
232, unidirectionally go out valve 231, be unidirectionally connected respectively with the left end of the pump housing 21 into one end of valve 232, unidirectionally go out valve 231, unidirectionally into
The other end of valve 232 is connected with extraneous storage haemocoele respectively.
The other end (right end in Fig. 3) of the pump housing 21 is arranged in second valve group 24, including unidirectionally goes out valve 241, unidirectionally into valve
242, unidirectionally go out valve 241, be unidirectionally connected respectively with the right end of the pump housing 21 into one end of valve 242, unidirectionally go out valve 241, unidirectionally into
The other end of valve 242 is connected with extraneous storage haemocoele respectively.
Control circuit 30 is as shown in figure 8, wherein each group coil connects in a series arrangement, the 1a-3b rectangular box in Fig. 5
Indicate that first group of series coil 1a-1b-2a-2b-3a-3b, this group of coil are encapsulated as an entirety in a series arrangement, only stay 1a,
Two pins of 3b；5f-2e rectangle frame indicates second group of series coil 5f-5e-4f-4e-3f-3e-2f-2e, this group of coil in Fig. 6
It is encapsulated as an entirety in a series arrangement, only stays two pins of 5f, 2e；2c-5d rectangle frame indicates second group of series coil in Fig. 7
2c-2d-3c-3d-4c-4d-5c-5d, this group of coil are encapsulated as an entirety in a series arrangement, only stay two pins of 2c, 5d.
(1) (2) are respectively 5V low level relay (model: srd-05vdc-sl-c) in Fig. 8, are not connecing suspension control signal
When relay connect normal-closed end, when receiving a control signal relay disconnect normal-closed end connect normally open end；1. relay is indicated in figure
2. device normal-closed end indicates that the normally open end of relay, intermediate connection end indicate common end.
Control circuit 30 connects electric mode are as follows: 1a termination power anode vcc, 3b terminate 1 relay common end, and 5f connects 1 relay
The normal-closed end of device, the normally open end of 2c contact relay 1, the normal-closed end of 2e contact relay 2, the normally open end of 5d contact relay 2, relay
2 public termination DC power cathode GND.
30 control mode of control circuit is circuit 1:(1) (2) relay is turned on 1. normal-closed end, coil 1a-3b-5f-2e
Section has electric current to flow through, other parts no current；Circuit 2:(1) (2) relay receive signal control disconnect normal-closed end connect it is 2. normal
At the beginning, 1a-3b-2c-5d sections have electric current to flow through, other parts no current.
As shown in figure 9, ordinate is F/C (N), F is the symbol of power, and C is constant, and F/C is an equivalence value of power, unit
For N newton, abscissa L/mm, L indicate the length of helical conduit 10, and unit is millimeter.Coordinate origin is in spiral shell as shown in Figure 1
10 left end the center point of line conduit, ordinate indicate stress equivalent F (N)/C of permanent magnet.Wherein, block curve indicates helical
The active force in conduit magnetic field, dashed curve indicate the active force with the helical conduit magnetic field of the reverse current of block curve.
Range of the efficient working range of helical conduit 10 between block curve and dashed curve cusp,
It is 20mm < L < 130mm in embodiment, (as shown in figure 9, the region area that the region curve and reference axis between two intersection points are enclosed
Equal, i.e., amount of work is equal, according to conservation of energy principle, selects this section of region that can guarantee the continuous of movement as workspace
Property).
Ordinate B/T, B in Figure 10 are magnetic induction intensity symbols, and T is unit tesla；Abscissa L/mm, L indicate spiral shell
The length of line conduit 10, unit are millimeters.
The working principle of electromagnetic drive pump 100:
Step 1, when relay do not receive control signal when, relay is not triggered, normal-closed end connect, direct current from
Vcc flows through 1a-3b-5f-2e to power cathode, since each layer solenoid coiling direction is consistent, then produces in helical conducting wire tube cavity
The magnetic field of the raw same direction, using the available magnetic field of the goal of magnetic induction intensity principle of stacking as shown in bold portion in Figure 10,
Permanent magnet is as shown in figure 11 by the active force of solenoidal field in the magnetic field, active force rule as indicated by the solid line in fig. 9,
The active force sliding block is moved downward by right intersection point (L=130mm), is reached F (N)/C=0 by even acceleration and is started at position
Slow down, reaches and stop at left intersection point (L=20mm).So that left working chamber 211 compresses, when pressure reaches certain value, unidirectionally go out
The valve of valve 231 is opened, and blood is flowed out from the pump housing 21.Simultaneously as the movement of magnet in right working chamber 212 so that generate negative
Pressure, blood into valve 242 from unidirectionally flowing into the pump housing 21, when slide block movement is opened at position to by even acceleration arrival F (N)/C=0
Begin to slow down, reaches and stop at left intersection point (L=20mm).
Step 2 after the completion of previous step, controls relay, triggers after so that it is received level signal, disconnects normal-closed end,
Normally open end is connected, direct current flows through 1a-3b-2c-5d to power cathode from vcc, generates in helical conducting wire tube cavity equidirectional
Magnetic field obtains the magnetic field of the goal as shown in dotted portion in Figure 10, active force of the permanent magnet by solenoidal field in the magnetic field
As shown in figure 12, active force rule as shown in phantom in Figure 9, the active force sliding block by left intersection point (L=20mm) to the right
Movement reaches F (N)/C=0 by even acceleration and reduces speed now at position, reaches and stops at right intersection point (L=130mm).So that right
Working chamber 212 compresses, and when pressure reaches certain value, the valve of unidirectional valve 241 out is opened, and blood is flowed out from the pump housing 21.Meanwhile
Since the movement of magnet is so that generate negative pressure in left working chamber 211, blood works as sliding block from unidirectionally flowing into the pump housing 21 into valve 232
It moves to and reduces speed now at position by even acceleration arrival F (N)/C=0, reach and stop at left intersection point (L=130mm).
One is repeated the above steps to step 2, until electromagnetic drive pump 100 completes beating pump blood.
The action and effect of embodiment
The electromagnetic drive pump according to involved by the present embodiment, including magnetic driving equipment, the pump housing, magnetic block, the first valve group,
Two valve groups and control circuit；Magnetic driving equipment includes the helical conduit that shape is coiled into symmetrical stepped conducting wire, spiral shell
Line conduit includes the plural groups coil block of stacked offset, and the pipe thickness of helical conduit is held from two of helical conduit
Portion successively decreases to middle part, and the successive time sequencing of the electric current of different coil blocks is led in control circuit control, so that a plurality of lines
Coil assembly generates the superposition magnetic field of opposite magnetic pole corresponding with magnetic block, magnetic block edge in superposition magnetic field in helical conduit
Helical conduit make straight reciprocating motion.
Magnetic driving equipment provided in this embodiment obtains magnetic field of the goal by design loop construction, using electromagnetic force as drive
Power is different from other drive control principles, target mechanism is driven by magnetic field force, reduces the volume of equipment.Into one
Step ground, electromagnetic drive pump provided in this embodiment can control the alternating changing magnetic field generated in helical guidewire lumen, make to pump
Intracorporal magnetic block does the reciprocating motion with simulation heartbeat rule under the action of the magnetic field, can be avoided centrifugal pump
Continuous pouring pumps damage of the blood to tissue internal organs and brain.
In addition, coil block includes the coil of plural layer superposition, the magnetic field of superposition is produced in helical conducting wire tube cavity, is folded
Magnetic induction intensity slope is relative constant in field form after adding, this makes magnet, and stability greatly strengthens during the motion
(stress of the magnet in magnetic field and the magnetic field magnetic induction intensity gaining rate are positively correlated).
Further, coil block is provided with input terminal and output end, is to be connected in series between plural groups coil block, this
So that the electric current in all coils is kept constant, this provides reliable environment for the superposition in magnetic field.
Further, permanent magnetic slider includes permanent magnet and the liquid capsule for being separately positioned on permanent magnet both ends, and liquid capsule is by using
Pellosil is made to form soft contact environment, can effectively reduce the physical injury in certain blood pressure sliding block for blood.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (5)
1. a kind of magnetic driving equipment, for being driven to the magnetic block being arranged inside characterized by comprising
The helical conduit that shape is coiled into symmetrical stepped conducting wire；
The control circuit being connect with the helical conduit,
Wherein, the helical conduit includes the plural groups coil block of stacked offset, the pipe thickness of the helical conduit
Successively decrease from two ends of the helical conduit to middle part,
The coil block includes the coil of plural layer superposition, and the helical coiling direction of the coil is consistent, and the helical is led
Spool has the coil that is of five storeys,
The coil block is provided with input terminal and output end, is series connection between coil block described in plural groups, and all
It is connect with the control circuit,
The successive time sequencing of the electric current of the different coil blocks is led in the control circuit control, so that a plurality of described
Coil block generates the superposition magnetic field of opposite magnetic pole corresponding with the magnetic block in the helical conduit,
The magnetic block makees straight reciprocating motion along the helical conduit in superposition magnetic field.
2. a kind of electromagnetic drive pump characterized by comprising
Magnetic driving equipment described in claim 1；
The pump housing is arranged in helical conduit, is in the form of a column, internal to have cavity；
Permanent magnetic slider in the cavity is set；And
The first valve group and the second valve group being connected respectively with the pump housing both ends,
Wherein, first valve group and second valve group include two lists being connected respectively with the pump housing not in the same direction
To valve,
The cavity is separated into two working chambers by the permanent magnetic slider.
3. electromagnetic drive pump according to claim 2, it is characterised in that:
Wherein, the permanent magnetic slider includes permanent magnet and the liquid capsule for being separately positioned on the permanent magnet both ends.
4. electromagnetic drive pump according to claim 3, it is characterised in that:
Wherein, the permanent magnet is made of NdFeB rear-earth material.
5. electromagnetic drive pump according to claim 3, it is characterised in that:
Wherein, the liquid capsule wraps up physiological saline by being made of pellosil in the liquid capsule.
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| CN201611244533.XA CN106593891B (en) | 2016-12-29 | 2016-12-29 | A kind of magnetic driving equipment and electromagnetic drive pump |
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| CN201611244533.XA CN106593891B (en) | 2016-12-29 | 2016-12-29 | A kind of magnetic driving equipment and electromagnetic drive pump |
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| CN108744096B (en) * | 2018-06-04 | 2020-07-31 | 上海市杨浦区市东医院 | Magnetic drive high-flow pulsation type blood pump |
| CN109157686B (en) * | 2018-08-20 | 2020-10-23 | 上海市杨浦区市东医院 | High-flow pulsating electromagnetic blood pump and left heart counterpulsation auxiliary system comprising same |
| CN109793953B (en) * | 2019-01-17 | 2021-11-02 | 上海理工大学 | Magnetic force and elastic force linked single-cavity reciprocating blood pump |
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| CN106787588A (en) * | 2016-12-29 | 2017-05-31 | 上海理工大学 | A kind of magnetic driving equipment |
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| US4375941A (en) * | 1978-03-20 | 1983-03-08 | Child Frank W | Method and apparatus for pumping blood |
| CN1085767A (en) * | 1992-10-22 | 1994-04-27 | 广东威达医疗器械集团公司 | Medical instrument with even magnetic field |
| CN202777219U (en) * | 2012-09-20 | 2013-03-13 | 上海市杨浦区市东医院 | Extracorporeal lung assisting system employing improved connecting mode |
| CN102886082B (en) * | 2012-09-20 | 2016-04-20 | 上海市杨浦区市东医院 | Active in-vitro lung auxiliary system |
| CN103845766B (en) * | 2014-03-07 | 2016-06-22 | 上海市杨浦区市东医院 | Untouchable electromagnetic coupled cylinder type liquid pumping system |
| CN105709287A (en) * | 2016-04-12 | 2016-06-29 | 上海理工大学 | Electromagnetic coil driving type blood pump system |
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| CN106787588A (en) * | 2016-12-29 | 2017-05-31 | 上海理工大学 | A kind of magnetic driving equipment |
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