CN1775314A - Magnetic controlled valveless pulsate blood pump - Google Patents
Magnetic controlled valveless pulsate blood pump Download PDFInfo
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- CN1775314A CN1775314A CN 200510047820 CN200510047820A CN1775314A CN 1775314 A CN1775314 A CN 1775314A CN 200510047820 CN200510047820 CN 200510047820 CN 200510047820 A CN200510047820 A CN 200510047820A CN 1775314 A CN1775314 A CN 1775314A
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Abstract
The present invention relates to a magnetic control valve-free pulsation type blood pump, belonging to the field of blood pump technology. It includes controller, valve-free pump and driver. The valve-free pump is connected with driver by means of connecting bar on the valve-free pump, the driver is connected with controller by means of control winding on it, and the controller can be used for controlling whole working process of said blood pump.
Description
Technical field
The invention belongs to the blood pump technical field, particularly a kind of magnetic controlled valveless pulsate blood pump.
Background technology
Heart disease is the disease of seeing of middle-aged and elderly people more, and myocardial failure is to cause dead major reason, and unique effective ways for the treatment of late cardiac depletion at present are heart transplantations.According to statistics, can carry out heart transplantation at present, only account for 5% of the heart transplantation number of waiting for, in the process of waiting for heart transplantation, about 20% patient death.Because donor's heart is in great shortage, old friends place high hopes to artificial heart.The critical piece of artificial heart is an electronic blood pump of keeping the heart blood supply function, and the artificial heart blood pump is divided into pulsate pump and non-pulsate pump two classes by the character that it produces blood flow.Non-pulsatory blood pump mainly contains impeller pump, centrifugal pump and axial-flow pump.Centrifugal pump is at present most widely used clinically a kind of, the centrifugal force pulls blood flow that is produced by the rotation of motor rotor impeller.Long-play may produce problems such as thrombosis, blood constituent destruction, aeroembolism and infection.Adopt the centrifugal blood pump of magnetic suspension bearing-free motor, can solve pump to a certain extent to erythrocytic destruction and long-time running problem, but the magnetic suspension blood pump needs the real-time control of a plurality of degree of freedom, technology is very complicated.Pulsate pump produces pulsatile flow, meets physiological requirement more, because the histocompatibility of its blood contacting surface is good, destroys little to blood component.Be divided into two types of air driven pump and electrodynamic pumps by the type pulsate pump of driver, air driven pump is to be that motive force makes the artificial ventricle's contraction and the diastole of capsule promote blood motion with gas; Electronic push pedal type pump is to promote a baffle plate with electric power to move back and forth, and makes artificial ventricle's contraction and diastole make blood form folk prescription to pulsate flow through the import and export valve of artificial ventricle.The shortcoming of existing pulsate pump is that volume is bigger, complex structure and costing an arm and a leg.
Summary of the invention
In order to solve the problem of above-mentioned existence, the object of the present invention is to provide a kind of magnetic controlled valveless pulsate blood pump.It has kept pulsation type blood pump and has met the Human Physiology characteristic and blood constituent is destroyed little advantage, overcome the shortcoming of traditional blood pump, adopt the magnetic control driver, to solve traditional, pneumatic and the motor drive mechanism power energy drawback that density is little, the blood pump volume is bigger, the pump housing adopts the valveless structure to simplify blood pump control, to increase reliability and service life.
Magnetic controlled valveless pulsate blood pump of the present invention, comprise controller, valveless pump and driver, valveless pump links to each other by the connecting rod on the valveless pump with driver, and driver links to each other with controller by the control winding on it, controls the entire work process of this blood pump by controller.Valveless pump comprises the connecting rod of the pump housing, elastic plate, entry conductor and delivery channel, transmission of drive force, the pump housing is the cuboid of upper end open, be fixed on pump housing upper end around the elastic plate, fixedly connected with connecting rod, on the sidewall of the pump housing, have the entrance and exit that has tapering, the quantity of set entrance and exit, tapering size and tapered direction are identical, and entry conductor is connected with entrance and exit respectively with delivery channel.Entrance and exit is located at the same wall or the different wall of the pump housing, the size of tapering is decided according to pump housing volume size and flow, its scope is: 5 °～7 °, the quantity of entrance and exit is at least a pair of, in order to increase the flow of pump, the quantity of entrance and exit can be for how right, and connecting rod is made with non-magnet material.
According to the difference of the operation principle of magnetic control driver, activation configuration has three kinds: electromagnetic actuator, magnetic control shape memory alloy driver and permanent magnet bias Differential Control magnetic control driver.
Electromagnetic actuator comprises magnetic conductive iron, magnetic conduction moves ferrum, moving ferrum back-moving spring and control winding, its annexation is: the magnetic conductive iron cross section is the rectangle frame that has opening, the moving ferrum of magnetic conduction places the opening of magnetic conductive iron, the lower end of the moving ferrum of magnetic conduction is connected with the connecting rod of valveless pump, between the inwall of magnetic conduction moving ferrum upper end and magnetic conductive iron back-moving spring is installed, back-moving spring has spacing top cover and bottom up and down, top cover is fixed on the inwall of magnetic conductive iron, bottom is fixed on the upper surface of the moving ferrum of magnetic conduction, leave the gap between moving ferrum of magnetic conduction and the magnetic conductive iron, guarantee that the moving ferrum of magnetic conduction freely moves up and down along magnetic conductive iron, the control winding is wrapped in a side of close controller on the magnetic conductive iron.
The magnetic control shape memory alloy driver is to replace the magnetic conduction in the electromagnetic actuator to move ferrum with nickel-manganese-gallium alloy magnetic control element, back-moving spring is placed the pump housing of valveless pump, concrete structure is: the top cover of back-moving spring is fixed on the elastic plate on the valveless pump, bottom is fixed on the inner surface of valveless pump pump housing lower wall, baffle plate is fixed on the opening top of magnetic conductive iron inside, it between the connecting rod of baffle plate and valveless pump the magnetic control element, magnetic control element and connecting rod, be the face contact between the baffle plate, the magnetic control element, all leave the gap between connecting rod and the magnetic conductive iron, guarantee that magnetic control element and connecting rod freely move up and down along magnetic conductive iron.
Permanent magnet bias Differential Control magnetic control driver comprises the coupling and the control winding of non-magnetic conduction, connector, gusset piece, two identical magnetic conductive iron, two have same size, the permanent magnet of the performance and the direction of magnetization, two non-magnetic conduction magnetic isolation plates, two sizes, nickel-manganese that performance is identical-gallium alloy magnetic control element, its annexation is: the both sides of coupling are respectively the magnetic control element, magnetic isolation plate, permanent magnet, the centre of magnetic conductive iron has groove, the shape and structure at two ends respectively with the magnetic control element, magnetic isolation plate, the mounting structure of permanent magnet cooperates, coupling places the groove middle part of two magnetic conductive iron, two magnetic control elements place the space of upper and lower unshakable in one's determination respectively, two magnetic isolation plates are separately fixed in the end recesses of magnetic conductive iron, the last low groove that two permanent magnets place two magnetic conductive iron to form respectively, leave the gap between magnetic control element and magnetic conductive iron, guarantee that the magnetic control element freely moves up and down, two magnetic control element and couplings, be the face contact between the magnetic isolation plate, there is not free clearance between the contact surface, cooperate tight, coupling is connected by connector with the connecting rod of transmission of drive force, so that it all sends the output displacement of driver to the elastic plate of valveless pump, two magnetic conductive iron link together with bolt by the gusset piece of four non-magnetic conductions, and the control winding is wrapped in a side of close controller on the magnetic conductive iron.
Work process of the present invention: when controller is given energising of control winding and outage periodic duty, generation is made the driving force of valveless pump continuous operation, elastic plate allows enough big strain under the pressure of driver or pulling force effect, dotted line is represented the maximum distortion position of elastic plate among the figure; The elastic plate of valveless pump passed to the driving force of driver by connecting rod, the elastic plate that driver drives valveless pump by connecting rod is out of shape the volume that makes valveless pump up and down and increases or reduce, make the liquid in the valveless pump produce negative pressure or malleation, thereby make liquid attempt to enter in the valveless pump or the outflow pump housing by entrance and exit, because the pyramidal structure that the valveless pump entrance and exit has, make by inlet and flow into always many in the valveless pump than effusive, and in contrast, flow into always lacking in the valveless pump by outlet than effusive, therefore, when doing continuously under the drive of elastic plate in driver when being out of shape up and down, valveless pump will produce the pulsatile flow of one-way flow.By regulating the size that feeds the control winding current, can change the deflection of elastic plate, thereby regulate the flow of each working cycle of valveless pump.Change energising and the power-off time cycle of controlling winding by controller, the flow in the beat frequency and the unit interval of may command valveless pump.
The invention has the beneficial effects as follows: valveless pump has only the liquid inlet and the outlet of band tapering, and the by-pass valve control that confined liquid flows to is not installed, thereby overall structure is simple, reliable operation and long service life.The moving ferrum of the magnetic conduction of electromagnetic actuator directly contact with magnetic conductive iron, and magnetic conduction to move electromagnetic force that ferrum bears be to move on the ferrum position and reduce gradually along with magnetic conduction moves, can not produce any bump and noise.The magnetic control shape memory alloy driver has adopted the distortion of magnetic control shape memory alloy element control valveless pump elastic plate, makes the present invention have little, the advantage of simple structure of volume.Permanent magnet bias Differential Control magnetic control driver, because permanent magnet provides bias magnetic field, and the control winding only need provide the exciting current that produces differential magnetic field, so the exciting power that needs can reduce greatly.Simultaneously owing to cancelled back-moving spring, thereby improve the load capacity of driver and the control performance of valveless pump, improved overall mechanical properties.
Description of drawings
Fig. 1 adopts the structural principle sketch map of electromagnetic actuator for the present invention,
Fig. 2 adopts the structural principle sketch map of magnetic control shape memory alloy driver for the present invention,
Fig. 3 adopts the structural principle sketch map of permanent magnet bias Differential Control magnetic control driver for the present invention,
Fig. 4 is the overall structure sketch map of driver among Fig. 3,
Fig. 5 is the local side view cutaway drawing of Fig. 3, is the connecting rod connection diagram of the coupling and the valveless pump of driver,
Fig. 6 is that nickel-manganese-gallium alloy element is applying the change of shape contrast of controlling magnetic field front and back;
1 pump housing among the figure, 2 elastic plates, 3 inlets, 4 outlets, 5 entry conductors, 6 delivery channels, 7 connecting rods, 8 magnetic conductive iron, 9 back-moving springs, 10 magnetic conductions move ferrum, 11 control windings, 12 controllers, 13 magnetic control elements, 14 baffle plates, 15 permanent magnets, 16, magnetic isolation plate, 17 couplings, 18 gusset pieces, 19 connectors, I is the magnetic control element that adds before the magnetic field, and II is the magnetic control element that adds behind the magnetic field, and δ is the deformation rate of magnetic control element.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described further:
The present invention includes valveless pump, driver and controller 12, valveless pump links to each other by the connecting rod on the valveless pump 7 with driver, and driver links to each other with controller 12 by the control winding 11 on it, by the work of controller 12 these blood pumps of control.Valveless pump comprises the non-magnetic conduction connecting rod 7 of the pump housing 1, high strength elastic plate 2, entry conductor 5, delivery channel 6 and transmission of drive force, its annexation is: the pump housing 1 is the cuboid of upper end open, be fixed on the pump housing 1 upper end around the elastic plate 2, fixedly connected with connecting rod, on the sidewall of the pump housing 1, have the inlet 3 and the outlet 4 that have tapering, the inlet of being opened 3 is identical with quantity, tapering size and the tapered direction of outlet 4, and entry conductor 5 is connected with outlet 4 with inlet 3 respectively with delivery channel 6.
Embodiment 1: as shown in Figure 1, adopt the valveless blood pump of electromagnetic actuator.Electromagnetic actuator comprises magnetic conductive iron 8, magnetic conduction moves ferrum 10, back-moving spring 9 and control winding 11, its annexation is: magnetic conductive iron 8 cross sections are the rectangle frame that has opening, the moving ferrum 10 of magnetic conduction places the opening of magnetic conductive iron 8, the lower end of the moving ferrum 10 of magnetic conduction is connected with the connecting rod 7 of valveless pump, between the inwall of moving ferrum 10 upper ends of magnetic conduction and magnetic conductive iron 8 back-moving spring 9 is installed, back-moving spring 9 has spacing top cover and bottom up and down, top cover is fixed on the inwall of magnetic conductive iron 8, bottom is fixed on the upper surface of the moving ferrum 10 of magnetic conduction, leave the gap between moving ferrum 10 of magnetic conduction and the magnetic conductive iron 8, guarantee that the moving ferrum 10 of magnetic conduction freely moves up and down along magnetic conductive iron 8, control winding 11 is wrapped in a side of close controller 12 on the magnetic conductive iron 8.Valveless pump among this embodiment is to have 3 and outlets 4 of an inlet on the pump housing 1 opposing sidewalls, and the tapering of inlet 3 and outlet 4 is 5 °, and tapered direction is: the awl mouth that is connected with entry conductor 5 is big, and is young with the awl that delivery channel 6 is connected.The square-wave pulse generator that controller adopts digital circuit to constitute, the width and the frequency adjustable of output pulse, with its be controlled to be 11 power supplies of valveless blood pump drives device control winding DC circuit in the turn-on and turn-off of electronic power switch device, the electronic power switch device is power field effect transistor or igbt; The size of current of control winding 11 then can be controlled by adopting chopper to regulate direct current supply voltage.
Its operation principle: when control winding 11 no currents, no magnetic field produces in the magnetic conductive iron 8, the moving ferrum 10 of magnetic conduction does not bear electromagnetic force, under the effect of back-moving spring 9, move down, make valveless pump elastic plate 2 bear pressure by connecting rod 7 and be bent downwardly distortion, because of the pump housing 1 volume diminishes, liquid pressurized in the valveless pump and the inwall of the pump housing 1 is produced pressure, because inlet 3 has identical tapering left large and right small with outlet 4, obviously the fluid pressure at outlet 4 places is bigger than the pressure at inlet 3 places, thereby from exporting 4 liquid of discharging than big from 3 outputs that entered the mouth.After control winding 11 feeds electric current, produce magnetic flux in the magnetic conductive iron 8, the characteristic of magnetic flux is the path closure of wishing the shortest with the path in magnetic resistance minimum, thereby the moving ferrum 10 of magnetic conduction is produced electromagnetic attraction and it is moved up, drive the upwards distortion of elastic plate 2 of valveless pump by connecting rod 7, increase gradually along with the valveless pump body bulk, the pump housing 1 inside and outside pressure differential becomes negative pressure by malleation, the liquid at entry conductor 5 and delivery channel 6 places will enter the pump housing 1 under suction function, it is same because inlet 3 has identical tapering left large and right small with outlet 4, obviously the fluid pressure at outlet 4 places is littler than the pressure of porch, thereby enters the liquid of pump than little from 3 inlets that enter the mouth from exporting 4.Cut off the power supply to energising from control winding 11, be a working cycle of the present invention.From above-mentioned analysis as can be known, in a working cycle, 3 liquid that enter valveless pump are more than the liquid of discharging valveless pump by entering the mouth, to discharge the liquid of valveless pumps more than the liquid that enters valveless pump by exporting 4 in contrast, and by enter the mouth 3 and the outlet 4 liquid total flows that enter valveless pump equal to discharge the liquid total flow of valveless pump.Liquid is 3 to flow into the valveless pump pump housings 1 and flow out the pump housings from exporting 4 from entering the mouth in general, when 11 energisings of control winding and outage periodic duty, generation is made the driving force of valveless pump continuous operation, makes valveless pump produce the liquid stream of beating of one-way flow.Regulate the size that feeds control winding 11 electric currents by controller 12, can change the displacement of the moving ferrum 10 of electromagnetic driver magnetic conduction and the deflection of elastic plate 2, thereby regulate the flow of each working cycle of valveless pump.Change energising and the power-off time cycle of controlling winding 11 by controller 12, the flow in the beat frequency and the unit interval of may command valveless pump.
Embodiment 2: as shown in Figure 2, adopt the valveless blood pump of magnetic control shape memory alloy driver.This magnetic control shape memory alloy driver is to replace the magnetic conduction among the embodiment 1 to move ferrum 10 with nickel-manganese-gallium alloy magnetic control element 13, back-moving spring 9 is placed the pump housing 1 of valveless pump, concrete structure is: the top cover of back-moving spring 9 is fixed on the elastic plate 2 on the valveless pump, bottom is fixed on the inner surface of the valveless pump pump housing 1 lower wall, baffle plate 14 is fixed on the opening top of magnetic conductive iron 8 inside, be magnetic control element 13 between the connecting rod 7 of baffle plate 14 and valveless pump, magnetic control element 13 and connecting rod 7, be the face contact between the baffle plate 14, magnetic control element 13, all leave the gap between connecting rod 7 and the magnetic conductive iron 8, guarantee that magnetic control element 13 and connecting rod 7 move up and down along magnetic conductive iron 8.Valveless pump among this embodiment is to have 1 pair of entrance and exit on the identical sidewall of the pump housing, and the tapering of entrance and exit is: 6 °, tapered direction is: the awl mouth that is connected with entry conductor 5 is big, and is young with the awl that delivery channel 6 is connected.The square-wave pulse generator that controller adopts digital circuit to constitute, the width and the frequency adjustable of output pulse, with its be controlled to be 11 power supplies of valveless blood pump drives device control winding DC circuit in the turn-on and turn-off of electronic power switch device, the electronic power switch device is power field effect transistor or igbt; The size of current of control winding 11 then can be controlled by adopting chopper to regulate direct current supply voltage.
Its operation principle: magnetic control shape memory alloy is a kind of nickel-manganese-gallium alloy that produces distortion and have shape memory function under the action of a magnetic field.As shown in Figure 6, when for the nickel-manganese with specific lattice orientation-when the gallium alloy element applies magnetic field, alloying element produces the elongation strain that is approximated to direct ratio with the magnetic field size on perpendicular to magnetic direction, its deformation rate δ is 4%, the maximum distortion rate can reach more than 10%, and has very big power energy density.Nickel-manganese after cancel in magnetic field-gallium alloy element has shape memory function, by applying external pressure it is resiled.The present invention utilizes this distinctive performance of nickel-manganese-gallium alloy, has constituted the magnetic control shape memory alloy driver of the pulsation type valveless blood pump of high force-energy density.Nickel-manganese-gallium alloy magnetic control element 13 is vertically passed in the magnetic field that control winding 11 energising backs produce, the elastic plate 2 that these magnetic control element 13 elongation strains move down connecting rod 7 and make valveless pump is bent downwardly distortion, the valveless pump housing 1 volume reduces and produces malleation, liquid in the valveless pump pump housing 1 is by conical entrance and outwards discharging of outlet, as mentioned above, owing to the effect of bell, cause by the flow-rate ratio of outlet discharge many by the flow of inlet discharge; When the after-applied magnetic field on magnetic control element 13 of control winding 11 outages disappears, this magnetic control element 13 resiles under the spring pressure effect, simultaneously because elastic plate 2 is bent upwards distortion under the pulling force of connecting rod 7, the valveless pump pump housing 1 volume increases the generation negative pressure makes the outer liquid of valveless pump attempt to enter the pump housing 1 by conical entrance and outlet, same because the effect of bell causes by inlet more than the liquid that enters valveless pump by outlet.Periodic energising and outage by to control winding 11 just can obtain unidirectional liquid stream of beating.
Embodiment 3: as Fig. 3, Fig. 4, shown in Figure 5, adopt the valveless blood pump of permanent magnet bias Differential Control magnetic control driver.Be a kind of improvement structure of example 1 and example 2, cancelled back-moving spring, adopted permanent magnet bias magnetic circuit and Differential Control mode.Its structure comprises the coupling 17, control winding 11, connector 19, gusset piece 18 of non-magnetic conduction, two magnetic conductive iron that structure is identical 8, the permanent magnet 15 with same size, performance and horizontal direction of magnetization, non-magnetic conduction magnetic isolation plate 16; Nickel-manganese that size is identical with performance-gallium alloy magnetic control element 13, its annexation is: the two ends of coupling 17 are respectively magnetic control element 13, magnetic isolation plate 16, permanent magnet 15, its both sides are magnetic conductive iron 8, the centre of magnetic conductive iron 8 has groove, the shape and structure at two ends respectively with magnetic control element 13, magnetic isolation plate 16, the mounting structure of permanent magnet 15 cooperates, coupling 17 places the groove middle part of two magnetic conductive iron 8, two magnetic control elements 13 place the space of magnetic conductive iron 8 upper and lowers respectively, two magnetic isolation plates 16 are separately fixed in the end recesses of magnetic conductive iron 8, the last low groove that two permanent magnets 15 place two magnetic conductive iron 8 to form respectively, 8 of magnetic control element 13 and magnetic conductive iron leave the gap, guarantee that magnetic control element 13 moves up and down, two magnetic control elements 13 and coupling 17, be the face contact between the magnetic isolation plate 16, there is not free clearance between the contact surface, coupling 17 is connected by connector 19 with the connecting rod 7 of transmission of drive force, as shown in Figure 4; Two magnetic conductive iron 8 are linked together by the gusset piece 18 usefulness bolts of four non-magnetic conductions, as shown in Figure 5; Control winding 11 is wrapped in a side of close controller 12 on the magnetic conductive iron 8; The connecting rod 7 of valveless pump is arranged in the below of two magnetic conductive iron, 8 lower grooves permanent magnets 15.Valveless pump among this embodiment is to have 2 pairs of entrance and exits on opposing sidewalls, and the tapering of entrance and exit is 7 °, and tapered direction is: the awl mouth that is connected with entry conductor 5 is big, and is young with the awl that delivery channel 6 is connected.The square-wave pulse generator that controller adopts digital circuit to constitute, the pulse width and the frequency adjustable of output, become two group pulse signals of 180 ° of phase phase difference by logic circuit, be controlled to be the turn-on and turn-off of the electronic power switch device (power field effect transistor or igbt) of valveless blood pump drives device control winding 11 power supply inverters with it, supply with the symmetric AC square wave current of driver control winding 11 positive and negative half-waves, size of current then can adopt chopper to control by regulating inverter direct current supply voltage.
Its operation principle is as follows: when control winding 11 no currents, nickel-manganese-gallium alloy magnetic control element 13 is passed in the magnetic field that only has two permanent magnets 15 to produce, because magnetic structure symmetry, the identical equal and opposite in direction of magnetic direction in the magnetic control element 13, thereby the distortion of two magnetic control elements 13 is identical, so coupling 17 mediates and do not export displacement, corresponding valveless pump elastic plate 2 is in the normal position.After control winding 11 feeds electric current, magnetic flux by two magnetic control elements, 13 closures will be produced, equal and opposite in direction in two magnetic control elements 13 but direction is opposite, the magnetic flux that this magnetic flux and two permanent magnets 15 produce addition and another subtracts each other in two elements, the different degeneration amount differences that produce in magnetic field of bearing owing to two magnetic control elements 13 up and down, the shortening that the elongation that magnetic field is strong and magnetic field are weak, the displacement that its result will make coupling 17 produce downward or upward drives valveless pump elastic plate 2 by connecting rod 7 and makes corresponding deformation.Size, direction and the frequency of driver output displacement can change size, direction and the frequency of supply of controlling winding 11 electric currents by controller 12 and control.
Claims (7)
1, a kind of magnetic controlled valveless pulsate blood pump, include controller, it is characterized in that it also includes valveless pump, driver, valveless pump links to each other by the connecting rod on the valveless pump with driver, driver links to each other with controller by the control winding on it, controls the entire work process of this blood pump by controller.
2, magnetic controlled valveless pulsate blood pump according to claim 1, it is characterized in that described valveless pump comprises the connecting rod of the pump housing, elastic plate, entry conductor and delivery channel, transmission of drive force, its annexation is: the pump housing is the cuboid of upper end open, be fixed on pump housing upper end around the elastic plate, fixedly connected with connecting rod, on the sidewall of the pump housing, have the entrance and exit that has tapering, the quantity of set entrance and exit, tapering size and tapered direction are identical, and entry conductor is connected with entrance and exit respectively with delivery channel.
3, magnetic controlled valveless pulsate blood pump according to claim 2, it is characterized in that the entrance and exit that has tapering set on the pump housing is at same wall or different wall, range of taper is 5 °～7 °, and the quantity of entrance and exit is at least a pair of, and connecting rod is made with non-magnet material.
4, magnetic controlled valveless pulsate blood pump according to claim 1 is characterized in that described activation configuration form has three kinds: electromagnetic actuator, magnetic control shape memory alloy driver and permanent magnet bias Differential Control magnetic control driver.
5, magnetic controlled valveless pulsate blood pump according to claim 4, it is characterized in that described electromagnetic actuator comprises magnetic conductive iron, magnetic conduction moves ferrum, back-moving spring and control winding, its annexation is: the magnetic conductive iron cross section is the rectangle frame that has opening, the moving ferrum of magnetic conduction places the opening of magnetic conductive iron, the lower end of the moving ferrum of magnetic conduction is connected with the connecting rod of valveless pump, between the inwall of magnetic conduction moving ferrum upper end and magnetic conductive iron back-moving spring is installed, back-moving spring has spacing top cover and bottom up and down, top cover is fixed on the inwall of magnetic conductive iron, bottom is fixed on the upper surface of the moving ferrum of magnetic conduction, leave the gap between moving ferrum of magnetic conduction and the magnetic conductive iron, guarantee that the moving ferrum of magnetic conduction freely moves up and down along magnetic conductive iron, the control winding is wrapped in a side of close controller on the magnetic conductive iron.
6, magnetic controlled valveless pulsate blood pump according to claim 4, it is characterized in that described magnetic control shape memory alloy driver is to replace the magnetic conduction in the electromagnetic actuator to move ferrum with nickel-Manganese-gallium alloy magnetic control element, back-moving spring is placed the pump housing of valveless pump, concrete structure is: the top cover of back-moving spring is fixed on the elastic plate on the valveless pump, bottom is fixed on the inner surface of valveless pump pump housing lower wall, baffle plate is fixed on the opening top of magnetic conductive iron inside, it between the connecting rod of baffle plate and valveless pump the magnetic control element, magnetic control element and connecting rod, be the face contact between the baffle plate, the magnetic control element, all leave the gap between connecting rod and the magnetic conductive iron, guarantee that magnetic control element and connecting rod freely move up and down along magnetic conductive iron.
7, magnetic controlled valveless pulsate blood pump according to claim 4, it is characterized in that described permanent magnet bias Differential Control magnetic control driver comprises the coupling of non-magnetic conduction, the control winding, connector, gusset piece, two magnetic conductive iron that structure is identical, two have same size, the permanent magnet of the performance and the direction of magnetization, two non-magnetic conduction magnetic isolation plates, two nickel-Manganese-gallium alloy magnetic control elements that size is identical with performance, its annexation is: the two ends of coupling are respectively the magnetic control element, magnetic isolation plate, permanent magnet, its both sides are magnetic conductive iron, the centre of magnetic conductive iron has groove, the shape and structure at two ends respectively with the magnetic control element, magnetic isolation plate, the mounting structure of permanent magnet cooperates, coupling places the groove middle part of two magnetic conductive iron, two magnetic control elements place the space of magnetic conductive iron upper and lower respectively, two magnetic isolation plates are separately fixed in the end recesses of two magnetic conductive iron, the last low groove that two permanent magnets place two magnetic conductive iron to form respectively, leave the gap between magnetic control element and magnetic conductive iron, guarantee that the magnetic control element freely moves up and down, two magnetic control element and couplings, be the face contact between the magnetic isolation plate, there is not free clearance between the contact surface, coupling is connected by connector with the connecting rod of transmission of drive force, two magnetic conductive iron link together with bolt by the gusset piece of four non-magnetic conductions, and the control winding is wrapped in a side of close controller on the magnetic conductive iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510047820A CN100577223C (en) | 2005-11-25 | 2005-11-25 | Magnetic controlled valveless pulsate blood pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510047820A CN100577223C (en) | 2005-11-25 | 2005-11-25 | Magnetic controlled valveless pulsate blood pump |
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| Publication Number | Publication Date |
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| CN1775314A true CN1775314A (en) | 2006-05-24 |
| CN100577223C CN100577223C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200510047820A Expired - Fee Related CN100577223C (en) | 2005-11-25 | 2005-11-25 | Magnetic controlled valveless pulsate blood pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284091A (en) * | 2011-06-16 | 2011-12-21 | 北京航空航天大学 | Left ventricle assist device |
| CN105251068A (en) * | 2015-09-10 | 2016-01-20 | 苏州大学张家港工业技术研究院 | Electromagnetic-permanent magnetism bidirectional driving type artificial heart pump |
| CN113368388A (en) * | 2021-06-21 | 2021-09-10 | 内蒙古工业大学 | Left ventricle auxiliary pulsation type blood pump |
-
2005
- 2005-11-25 CN CN200510047820A patent/CN100577223C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284091A (en) * | 2011-06-16 | 2011-12-21 | 北京航空航天大学 | Left ventricle assist device |
| CN105251068A (en) * | 2015-09-10 | 2016-01-20 | 苏州大学张家港工业技术研究院 | Electromagnetic-permanent magnetism bidirectional driving type artificial heart pump |
| CN113368388A (en) * | 2021-06-21 | 2021-09-10 | 内蒙古工业大学 | Left ventricle auxiliary pulsation type blood pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100577223C (en) | 2010-01-06 |
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