CN110292670A

CN110292670A - Magnetic coupling centrifugal blood pump and its blood pump pedestal, blood pump controller and control method

Info

Publication number: CN110292670A
Application number: CN201910766483.9A
Authority: CN
Inventors: 韩佳鑫; 卢飞; 李剑青; 易博
Original assignee: Shanghai Minimally Invasive Medical Technology Co Ltd
Current assignee: Shanghai Minimally Invasive Medical Technology Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2019-10-01
Anticipated expiration: 2039-08-20
Also published as: CN110292670B

Abstract

The present invention relates to a kind of magnetic coupling centrifugal blood pump and its blood pump pedestals, blood pump controller and control method, blood pump pedestal therein is other than including casing assembly, electric machine assembly, driving mechanism and gear adjustment mechanism, further include gear detecting mechanism, for detection-sensitive motor component axial position and generate axial position information.And then blood pump controller of the invention can receive the axial position information of electric machine assembly, and judge whether the current gear of motor matches with the current rotating speed and/or target gear of motor, if being judged as mismatch, then blood pump controller outwardly sends prompt, make doctor according to prompt to adjust motor gear in time, motor gear i.e. magnetic steel gap is made to match always with motor speed.It does so, can effectively reduce the formation of haemolysis and thrombus, improve the working efficiency of blood pump.

Description

Magnetic coupling centrifugal blood pump and its blood pump pedestal, blood pump controller and control method

Technical field

The present invention relates to blood pump field, in particular to a kind of magnetic coupling centrifugal blood pump and its blood pump pedestal, blood pump controller And control method.

Background technique

In openheart surgery or when cardiogenic shock occurs for patient, external centrifugal blood pump for setting up blood flow in vitro Channel is operated, accessory heart pumps blood.PLVAD system (Percutaneous Left Ventricular Assist Device: Percutaneous left ventricular assist device), ECMO system (Extra-Corporeal Membrane Oxygenation) and extracorporal circulatory system System etc. can serve as power device by external centrifugal blood pump, instead of cardiac pumping.

Magnetic coupling is the driving method of most commonly seen external centrifugal blood pump: a driven magnet steel is placed in impeller, and one Driving magnet steel is mounted on the base and is connected to the motor；By the magnetic coupling interaction of two magnet steel, the torque of motor is transferred to On impeller, impeller rotation.Magnetic coupling arrangement separates impeller with motor, avoids dynamic sealing, and pump head part is detachable, from And pedestal is recycled.

In general, magnetic coupling centrifugal blood pump supports impeller by upper and lower two bearings.In the axial direction, impeller will receive to On hydraulic coupling and downward magnetic pull effect, add gravity, the resultant force of three power is the axial load at bearing. So controlling the size of three power, makes resultant force close to zero, can be minimized the axial load at bearing, thus lifting system Efficiency reduces fever and abrasion, and reduces the risk of haemolysis and thrombus.And adjustable frames pass through the magnetic coupling of two magnet steel of adjusting Gap is closed, has achieved the purpose that real-time adjusting magnetic pull, makes pump under different rotating speeds, magnetic pull can offset with hydraulic coupling Disappear, makes resultant force close to zero.

Applicant proposes a kind of with gear adjustment machine in the patent of invention that Authorization Notice No. is CN108815601B The adjustable frames of structure correspond to different revolving speeds by different stalls, adjust the magnetic coupling gap of two magnet steel.But applicant Further study show that doctor is when in use, since revolving speed needed for pumping under different use conditions is not identical, doctor is easy opening The dynamic stage ignores whether verification current gear matches revolving speed needed for oneself, while in the process of running, and doctor may basis at any time Patient needs to adjust running speed, and for the focus of doctor mainly on revolving speed, same easy ignorance needs regulation stall at this time With revolving speed.

Current magnetic steel gap automatic adjustment technology can solve this risk, but need to increase additionally on pedestal Stepper motor does so the structure complexity that will increase pedestal, increases pedestal cost, and poor radiation, working long hours can The problem of motor over-heat inside can be will lead to, influences the performance and used life of motor and generates security risk.Importantly, Though automatic adjustment magnetic steel gap technology can satisfy the magnetic steel gap adjusted under any revolving speed, doctor in actual application The revolving speed for needing to adjust is often fixed several gears, for example 2500rpm, 3000rpm, 3500rpm, therefore between manually adjusting Gap can satisfy doctor's demand, while can simplify the structure of pedestal, reduce cost, and can also optimize the thermal diffusivity of pedestal Can, extend the service life of motor.

Therefore, it is necessary to which gap can not only be manually adjusted by developing one kind, and can be to blood pump revolving speed and motor gear The magnetic coupling centrifugal blood pump and its blood pump pedestal, blood pump controller and control for being monitored in real time and doctor being prompted to carry out gear adjusting Method processed, can mitigate the work load of doctor in this way, and effectively reduce the generation of haemolysis and thrombus, improve medical effect.

Summary of the invention

In view of this, the purpose of the present invention is to provide a kind of magnetic coupling centrifugal blood pump and its blood pump pedestals, blood pump control Device and control method, it is intended to motor gear (corresponding with magnetic steel gap) is monitored online, and work as blood pump revolving speed and motor shelves Position can also send alarm when mismatching, so that doctor be prompted to carry out gear adjusting, can effectively reduce haemolysis and thrombus in this way Generation, improve the working efficiency of blood pump, improve medical effect.

To achieve the above object, the present invention provides a kind of blood pump pedestals, including casing assembly, electric machine assembly, driving machine Structure, gear adjustment mechanism and gear detecting mechanism；The electric machine assembly is set in the casing assembly, the electric machine assembly packet The motor being connected and driving magnet steel are included, the driving mechanism is connect with the electric machine assembly, for driving the electric machine assembly It axially moves relative to the casing assembly, so that the electric machine assembly has at least two axis relative to the casing assembly To position, the gear adjustment mechanism is arranged on the casing assembly, will be described for matching with the driving mechanism Electric machine assembly limits one at least two axial position；

The gear detecting mechanism, for sensing the axial position of the electric machine assembly and generating axial position information, the axis It is used to judge whether the current gear of motor to match with the current rotating speed and/or target gear of the motor to location information.

Optionally, the gear detecting mechanism is arranged on the casing assembly, and under the action of the driving mechanism Generate the axial position information.

Optionally, in the blood pump pedestal, the gear adjustment mechanism includes at least two locating parts, the driving Mechanism includes at least one actuating arm；The actuating arm with one at least two locating part for selectively matching It closes, electric machine assembly is limited one at least two axial position with this, at least two locating part point It is not corresponded at least two axial position；

The gear detecting mechanism includes at least two sensors, and at least two sensor is limited with described at least two respectively Position part corresponds；When the actuating arm and a locating part cooperate, the actuating arm is activated described in corresponding one Sensor, one be activated, one power information of sensor definition, the power information correspond to the axial direction of the electric machine assembly Location information.

Optionally, in the blood pump pedestal, the gear detecting mechanism further includes a detection circuit, and at least two The sensor is set in the detection circuit, and the detection circuit is configured to output at least two-way power information, institute At least two-way power information is stated to correspond at least two axial position respectively；

Wherein: when the actuating arm cooperates with a corresponding locating part, the actuating arm activates a corresponding institute Sensor is stated, one in the output of detection circuit described in be activated a the sensor definition at least two-way power information Road.

Optionally, in the blood pump pedestal, the locating part is positioning column and can be along the axis of the electric machine assembly One sensor is set to movement, while on the side of each positioning column, and the sensor also can be along described The axial movement of electric machine assembly and with the actuating arm cooperate or separate so that the actuating arm with the positioning column cooperate when Activate the corresponding sensor.

Optionally, in the blood pump pedestal, the gear adjustment mechanism further includes at least one sliding slot and at least The wall of the casing assembly is arranged in each along the circumferential direction of the casing assembly for one mounting groove, the sliding slot and the mounting groove It goes up and is interconnected, at least two positioning columns are movably disposed on the mounting groove and along the extension side of the sliding slot It is arranged to interval；

At least two sensors are also movably disposed at the extending direction interval on the mounting groove and along the sliding slot Setting, and the actuating arm be used for it is mobile in the sliding slot and selectively with a phase at least two positioning column With merging while activating a corresponding sensor.

Optionally, in the blood pump pedestal, the gear adjustment mechanism further includes PBU pushbutton unit and button hole, described Button hole is arranged on the wall of the casing assembly and is connected to the mounting groove；The PBU pushbutton unit include movable-component and Button, the movable-component are movably disposed in the mounting groove and including elastic component, the sensor and the limits Position part is all set on the movable-component, and the button is set in the button hole；

The button is matched with the movable-component, for triggering the movable-component along the axis of the electric machine assembly First direction movement is yearned for, so that the positioning column and the sensor are separated with the actuating arm；The elastic component is for leading to It crosses movable-component described in elastic power drive to move along the axial of the electric machine assembly toward second direction, so that the positioning column Cooperate with the sensor and the actuating arm.

Optionally, in the blood pump pedestal, the detection circuit includes circuit board, and the movable-component further includes Fixed ontology, the fixed ontology is made of insulating material and is movably disposed in the mounting groove, and the circuit board It is arranged on the fixed ontology with the locating part, the sensor is arranged on the circuit board.

Optionally, in the blood pump pedestal, the fixed ontology includes bottom plate and the side that is erected on the bottom plate Plate, the circuit board are set on the bottom plate, and the side plate is along the axially extending of the casing assembly and close to described outer The wall of shell component is arranged.

Optionally, in the blood pump pedestal, the locating part is arranged on the bottom plate, the elastic component and described Locating part is separately positioned on the opposite sides of the bottom plate, and one end of the elastic component connects the bottom plate, and the other end connects institute State the bottom of mounting groove；

Wherein, the shape of the circuit board matches with the bottom plate, and has the notch for avoiding the locating part, and described Bottom plate and the circuit board are arc-shaped.

Optionally, in the blood pump pedestal, an oblique protrusion is also provided on the side plate, the oblique protrusion has one One outer surface of a notch, the button is matched with the inner surface of the notch, and the inner surface of the notch is smooth bevel And there is the angle that one is acute angle with the bottom plate.

Optionally, in the blood pump pedestal, the locating part is fixed groove, the depth of each fixed groove It is different, and a sensor is set in each fixed groove.

Optionally, in the blood pump pedestal, the gear adjustment mechanism further includes at least one sliding slot and at least One mounting groove, the sliding slot and the mounting groove are arranged on the wall of the casing assembly, at least two anchors The setting of the extending direction interval on the sliding slot and along the sliding slot is arranged in slot；

Wherein: a through-hole is set in each fixed groove, and the through-hole is connected to the sliding slot and the mounting groove；At least two The setting of the extending direction interval in the mounting groove and along the sliding slot, each sensor warp is arranged in a sensor Corresponding fixed groove is protruded by corresponding through-hole；The actuating arm is used for mobile in the sliding slot and selectively and at least A matching in two fixed grooves merges while activating a corresponding sensor.

Optionally, in the blood pump pedestal, the detection circuit includes circuit board, and the circuit board is arranged described In mounting groove, the sensor is arranged on the circuit board, and the circuit board is arc-shaped.

Optionally, in the blood pump pedestal, the sensor is a push switch, and the detection circuit includes at least Two circuit paths, at least two circuit path are arranged in parallel, and are pressed described in setting one on each circuit path It compresses switch, each push switch is used to control the on-off of a corresponding circuit path, and each circuit path corresponds to The power information all the way；

When the actuating arm cooperates with a corresponding locating part, a corresponding push switch is turned by disconnecting Become being closed, and is connected to a corresponding circuit path；

When the actuating arm is separated with a corresponding locating part, a corresponding push switch is turned by closure It goes off, and is cut off a corresponding circuit path.

Optionally, in the blood pump pedestal, the detection circuit further includes circuit board, is formed on the circuit board At least two circuit path, the push switch are set on the circuit board；

It is additionally provided at least two divider resistances on the circuit board, and is provided at least one institute on each circuit path Divider resistance is stated, the divider resistance is arranged in series with the push switch, while one end of the detection circuit connects power supply Output end, the other end connect ground terminal.

Optionally, in the blood pump pedestal, the push switch is miniature touch-switch.

Optionally, in the blood pump pedestal, the first connector, the detection circuit are additionally provided on the circuit board It is electrically connected by first connector with blood pump controller.

Optionally, in the blood pump pedestal, first connector is for horizontal type structure and including separable socket And plug；The socket is arranged on the circuit board, and the blood pump pedestal further includes the second connector, and the plug is by leading Line is electrically connected with second connector, and second connector is electrically connected with the blood pump controller.

Optionally, in the blood pump pedestal, the conducting wire is arranged and is fixed along the inner wall of the casing assembly.

Optionally, in the blood pump pedestal, the power information is information of voltage.

To achieve the above object, the present invention also provides a kind of blood pump controllers, for electrical with the blood pump pedestal Connection, and the blood pump controller includes the acquisition unit, processing unit and reminding unit being sequentially connected electrically；

The acquisition unit is used to receive the axial position information for the electric machine assembly that the blood pump pedestal is fed back to and feeds back to institute State processing unit；

The processing unit is used for the axial position information according to electric machine assembly, obtains the current gear information of motor, and Further judge whether the current gear of motor matches with the current rotating speed and/or target gear of motor, if not being judged as not Match, then the reminding unit outwardly sends prompt information.

Optionally, in the blood pump controller, the processing unit includes:

Compensating module, for the critical speed according to a return difference speed considerations motor, so that compensated critical speed is in One preset range, the critical speed is for limiting two adjacent gears；And

Judgment module, for judging the current rotating speed of the motor whether in the preset range:

If so, the reminding unit does not send the prompt information；

If it is not, then further obtaining the object gear information of the motor according to the current rotating speed of the motor, and described in judgement Whether the target gear of motor matches with the current gear of the motor；

If so, the reminding unit does not send the prompt information；

If it is not, the reminding unit outwardly sends the prompt information.

Optionally, in the blood pump controller, the motor at least has the first critical speed and second critical turn Speed, first critical speed are less than the critical speed of second order；

The compensating module is used to compensate first critical speed and described second respectively using the same return difference revolving speed Critical speed, so that compensated first critical speed is in the first preset range and compensated described second faces Boundary's revolving speed is in the second preset range, and first preset range is not overlapped with second preset range；

And then whether the judgment module is used to judge the current rotating speed of the motor in first preset range or described the In two preset ranges；

If the current rotating speed of the motor not in first preset range or the second preset range, the judgment module into One step obtains the object gear information of the motor according to the current rotating speed of the motor, and judges the target gear of the motor Whether match with the current gear of the motor；

If so, the reminding unit does not send the prompt information；

If it is not, then the reminding unit outwardly sends the prompt information.

Optionally, in the blood pump controller, the blood pump controller further includes storage unit, described for storing The object gear information of motor, the object gear information include:

When blood pump revolving speed is lower than first critical speed, the object gear information is the 1st gear；

When blood pump revolving speed is between first critical speed and critical speed of second order, the object gear information is the 2nd grade Position；

When blood pump revolving speed is higher than the critical speed of second order, the object gear information is the 3rd gear.

Optionally, in the blood pump controller, the return difference revolving speed is greater than the maximum value of blood pump revolving speed sampling error.

Optionally, in the blood pump controller, the value range of the return difference revolving speed is 50 ~ 100 rpm.

Optionally, in the blood pump controller, the acquisition unit is that an A/D acquires port, is used for the electricity The axial position information of thermomechanical components is converted to digital signal and exports to the processing unit.

Optionally, further include signal conditioning unit in the blood pump controller, be electrically connected with the acquisition unit； The axial position information of the electric machine assembly exports after the signal condition processing by the signal conditioning unit to the acquisition Unit.

Optionally, in the blood pump controller, the prompt information includes image information, voice messaging and light At least one of information.

To achieve the above object, invention further provides a kind of magnetic coupling centrifugal blood pumps, comprising:

The blood pump pedestal；And the blood pump controller.

To achieve the above object, the present invention also provides a kind of control methods of magnetic coupling centrifugal blood pump, comprising:

Using the gear detecting mechanism detection-sensitive motor component axial position and generate axial position information, and by the axial direction Location information feeds back to the blood pump controller；

The blood pump controller obtains the current gear information of the motor according to the axial position information of the electric machine assembly, And further judge whether the current gear of the motor matches with the current rotating speed and/or target gear of the motor, if It mismatches, then the blood pump controller outwardly sends the prompt information.

Optionally, in the control method, the blood pump controller judge the motor current gear whether with The specific steps that the current rotating speed and/or target gear of the motor match further include:

The blood pump controller utilizes a critical speed of a return difference speed considerations motor, and compensated critical speed is made to be in one Preset range, and the critical speed is for limiting two adjacent gears；

And then whether the blood pump controller judges the current rotating speed of the motor in the preset range；

If so, the blood pump controller does not send the prompt information；

If it is not, further obtaining the object gear information of the motor according to the current rotating speed of the motor, and judge motor Whether target gear matches with the current gear of motor；

If so, the blood pump controller does not send the prompt information；

If it is not, the blood pump controller sends the prompt information.

Optionally, in the control method, the motor at least has the first critical speed and critical speed of second order, First critical speed is less than the critical speed of second order；The blood pump controller judge the motor current gear whether The specific steps to match with the current rotating speed of the motor further include:

The blood pump controller compensates first critical speed and described second using the same return difference revolving speed respectively and faces Boundary's revolving speed compensates, so that compensated first critical speed is in the first preset range and compensated described Critical speed of second order is in the second preset range, and first preset range is not overlapped with second preset range；

And then whether the blood pump controller judges the current rotating speed of the motor in first preset range or described second In preset range:

If the current rotating speed of the motor is not in first preset range or the second preset range, further according to The current rotating speed of motor obtains the object gear information of the motor, and judge the motor target gear whether with the electricity The current gear of machine matches；

If so, the reminding unit does not send the prompt information；

If it is not, then the reminding unit outwardly sends the prompt information.

Magnetic coupling centrifugal blood pump and its blood pump pedestal, blood pump controller and control method provided by the invention have and have as follows Beneficial effect:

The first, magnetic coupling centrifugal blood pump of the invention is realized using the gear detecting mechanism on blood pump controller and blood pump pedestal The purpose that blood pump revolving speed and motor gear are monitored in real time, and when motor gear and blood pump revolving speed mismatch, blood The also transmittable prompt of pump controller, prompts doctor that motor gear is adjusted in time, do so can reduce doctor work it is negative Load, and the formation of haemolysis and thrombus is effectively reduced, the working efficiency of blood pump is improved, medical effect is improved.

The second, gear detecting mechanism of the invention preferably includes at least two sensors, at least two sensor point It is not corresponded at least two locating parts in gear adjustment mechanism, as long as and then utilizing the actuating arm and shelves in driving mechanism The cooperation of locating part in the adjustment mechanism of position, can activate a corresponding sensor by actuating arm, and make the biography being activated Sensor senses the axial position of electric machine assembly in time and sends a power information, and the axis of electric machine assembly can be obtained according to power information To position, the gear information that can easily and fast and accurately obtain motor is done so.

Third, gear detecting mechanism of the invention more preferably include detection circuit, and sensor is preferably push switch, more Preferably miniature touch-switch.When practical application, when actuating arm cooperates with a corresponding locating part, corresponding one miniature Touch-switch is pressed by actuating arm and is closed, and a corresponding circuit path in the detection circuit is switched on, from And detection circuit is enable to export corresponding power information all the way (preferred voltage), conversely, when the actuating arm and corresponding one When locating part separates, a corresponding miniature touch-switch is disconnected, and is cut off a corresponding circuit path, is set in this way It sets, structure is simple, and the reliability of gear detection and accuracy are high.

4th, since revolving speed is sampled there are error, cause blood pump tachometer value near critical speed when, it may appear that gear frequency The case where numerous bounce, to reduce the accuracy of gear adjustment, in order to avoid the generation of this phenomenon, blood pump controller of the invention The critical speed of return difference speed considerations motor is also utilized, only when the current rotating speed of motor is higher than compensated critical speed most Big value or when being lower than minimum value, blood pump controller just issue prompt and remind the adjusting of doctor's progress gear, can overcome in this way turn Fast sampling error influences gear detection bring, to improve the accuracy and reliability of gear detection.

Detailed description of the invention

Feature, property and the advantage of implementation method and related embodiment of the invention will be by combining following drawings to carry out Description, in which:

Fig. 1 is the structural schematic diagram for the magnetic coupling centrifugal blood pump that an embodiment provides according to the present invention；

Fig. 2 is magnetic coupling centrifugal blood pump shown in Fig. 1 in the partial enlarged view of a-quadrant；

Fig. 3 is the main view for the blood pump ontology that an embodiment provides according to the present invention；

Fig. 4 is the axial sectional view for the blood pump ontology that an embodiment provides according to the present invention；

Fig. 5 is the exploded view for the blood pump pedestal that an embodiment provides according to the present invention；

Fig. 6 is the axial sectional view for the electric machine assembly that an embodiment provides according to the present invention；

Fig. 7 is the structural schematic diagram of the lower casing component on the according to embodiments of the present invention one blood pump pedestal provided, wherein installing There is gear detecting mechanism；

Fig. 8 is the top view of the according to embodiments of the present invention one lower casing component provided；

Fig. 9 is the scheme of installation of according to embodiments of the present invention one gear detecting mechanism provided；

Figure 10 is the structural schematic diagram of the according to embodiments of the present invention one gear adjustment mechanism provided；

Figure 11 is the structural schematic diagram of according to embodiments of the present invention one circuit board provided；

Figure 12 is the schematic diagram of detection circuit according to embodiments of the present invention one gear detecting mechanism provided；

Figure 13 is the structural block diagram of according to embodiments of the present invention one blood pump controller provided；

Figure 14 is that according to embodiments of the present invention one blood pump controller provided controls gear adjusting using matching algorithm Schematic diagram；

Figure 15 is the main view of the according to embodiments of the present invention two blood pump pedestals provided；

Figure 16 is the axial sectional view of the according to embodiments of the present invention two blood pump pedestals provided；

Figure 17 is the exploded view of the according to embodiments of the present invention two blood pump pedestals provided；

Figure 18 is the axial sectional view of according to embodiments of the present invention two electric machine assemblies provided；

Figure 19 is the structural schematic diagram of the lower casing component on the according to embodiments of the present invention two blood pump pedestals provided；

Figure 20 is the structural schematic diagram of according to embodiments of the present invention two gear detecting mechanisms provided；

Figure 21 is according to embodiments of the present invention two gear detecting mechanism provided scheme of installation on lower casing component.

In figure:

201- blood pump controller；

202- centrifugal pump；

205- blood pump pedestal；

206- cart；

208- bayonet unit；

The driven magnet steel of 209-；

210- impeller；

211,304- drives magnet steel；

1, the upper casing assembly of 301-；

2,302- electric machine assembly；

3,303- lower casing component；

5,305- fixed structure；

6,306- motor；

7,307- cooling pad；

8,308- motor housing；

9,310- actuating arm；

10,314- sliding slot；

315- guide groove；

313- fixed groove；

311- buckle；

11- positioning column；

12,317- mounting groove；

13- fixes ontology；

131- bottom plate；

132- side plate；

The oblique protrusion 133-；

134- notch；

14- elastic component；

15- button；

16- detection circuit；

17- sensor；

18- push switch；

19- divider resistance；

The first connector of 20-；

The second connector of 21-；

22- conducting wire；

161,318- circuit board；

24- through-hole；

2011- acquisition unit；

2012- processing unit；

2013- reminding unit；

2014- signal conditioning unit；

2015- electric machine controller；

2016- storage unit；

L1, L2, L3- circuit path；R1, R2, R3- divider resistance；S1, S2, S3- push switch；R0- reference resistance；

The same or similar component is indicated with different appended drawing references in attached drawing.

Specific embodiment

Below with reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts Example is applied, shall fall within the protection scope of the present invention.

As used in the present disclosure, singular "a", "an" and "the" includes plural reference, removes non-content In addition it explicitly points out outer.As used in the present disclosure, term "or" is usually to be made with including the meaning of "and/or" , in addition in addition non-content explicitly points out.As used in the present disclosure, it is usually to include " at least that term is " several " One " meaning and carry out using, in addition in addition non-content explicitly points out.As used in the present disclosure, term is " at least Two " be usually carried out with including the meaning of " two or more " using, in addition in addition non-content explicitly points out.This Outside, term " first ", " second ", " third " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or Person implicitly indicates the quantity of indicated technical characteristic.Define as a result, " first ", " second ", " third " feature can be bright Show or implicitly include one or at least two this feature.

Fig. 1 is the structural schematic diagram for the magnetic coupling centrifugal blood pump that an embodiment provides according to the present invention, and Fig. 2 is shown in Fig. 1 Magnetic coupling centrifugal blood pump is in the partial enlarged view of a-quadrant.As depicted in figs. 1 and 2, the embodiment of the invention provides a kind of magnetic couplings Centrifugal blood pump (hereinafter referred to as " blood pump ") is preferably arranged on cart 206 in actual application.

The blood pump specifically includes blood pump controller 201 and the blood pump ontology with 201 communication connection of blood pump controller, blood Pump controller 201 is used to be monitored the operation of entire blood pump, such as is monitored to the revolving speed of blood pump, and to entire blood The power supply of pump is monitored.And in actual application, blood pump controller 201 can be placed on the laminate of cart 206, laminate It is not limited to one.In addition, the blood pump ontology specifically includes centrifugal pump 202 and blood pump pedestal 205, the two is detachably connected, And centrifugal pump 202 is disposable part, blood pump pedestal 205 is that part is recycled.Cart 206 further includes being vertically arranged Support frame, support frame are connected to the side of laminate and are used to install blood pump ontology.The blood pump ontology can be laterally arranged by one Support plate be installed on support frame, and support plate preferably slidably connects support frame, makes the mounting height of blood pump ontology can To adjust, to meet different use highly.

Fig. 3 is the main view for the blood pump ontology that an embodiment provides according to the present invention, and Fig. 4 is an embodiment according to the present invention The axial sectional view of the blood pump ontology of offer.

As shown in figure 3, centrifugal pump 202 can pass through the bayonet unit 208 and blood pump pedestal 205 of two sides on blood pump pedestal 205 It is removably secured.As shown in figure 4, being provided with impeller 210 in centrifugal pump 202, and driven magnet steel 209 is provided on impeller 210, Driving magnet steel 211 is provided in blood pump pedestal 205 simultaneously, thus by the magnetic coupling of driving magnet steel 211 and driven magnet steel 209 come Impeller 210 is driven to rotate.And in actual use, user can change driving magnet steel by way of mechanically or electrically moving 211 position in blood pump pedestal 205, to change the magnetic coupling gap (hereinafter referred to as " magnetic steel gap ") of two magnet steel.This In, present invention seek to address that the problems of when mechanically changing magnetic steel gap.

As shown in figure 5, blood pump pedestal 205 specifically includes casing assembly and electric machine assembly 2, casing assembly includes upper shell group Part 1 and lower casing component 3, upper casing assembly 1 is detachably connected with lower casing component 3 and forms an installation space, and motor Component 2 is arranged in the installation space.

As shown in fig. 6, electric machine assembly 2 specifically includes motor 6, driving magnet steel 211 and motor housing 8.Drive magnet steel 211 solid It is scheduled on the motor shaft of motor 6, is rotated so as to the rotation with motor shaft.A settable fixed structure 5 on motor shaft, Fixed structure 5 can be fixedly connected with driving magnet steel 211, avoid driving magnet steel 211 due to magnetic pull, and 209 direction of Xiang Congdong magnet steel is moved It is dynamic.Entire motor 6 is provide with inside it by motor housing 8, and heat dissipation is preferably provided between motor 6 and motor housing 8 Pad 7, cooling pad 7 are made of the preferable flexible material of heating conduction, can fill the gap between motor 6 and motor housing 8, no Only be conducive to the fixation of motor 6, the contact area of motor 6 Yu motor housing 8 can also be increased, is more conducive to the heat of motor 6 Amount transmitting outward, improves heat dissipation effect.

Further, blood pump pedestal 205 further includes driving mechanism and gear adjustment mechanism.Wherein, the driving mechanism with Electric machine assembly 2 connects, and axially moves for driving motor component 2 relative to casing assembly, so that electric machine assembly 2 is relative to outer Shell component has at least two axial positions, can mechanically change magnetic steel gap in this way, adjustment centrifugal pump 202 by Magnetic pull.In addition, the gear adjustment mechanism is arranged on the casing assembly, and for matching with the driving mechanism It closes, can be only in one at least two axial positions to limit electric machine assembly 2 relative to the casing assembly, and each axis Correspond to different magnetic steel gaps to position, different magnetic steel gaps then corresponds to different blood pump revolving speeds, so that practical behaviour When making, operator only needs to be adjusted electric machine assembly 2 to a specific axial position according to current blood pump revolving speed, Doing so can facilitate user according to current blood pump revolving speed, make to magnetic steel gap and more rapidly and more accurately adjusting.

Specifically, the gear adjustment mechanism includes at least one sliding slot and at least two locating parts, the sliding slot edge The circumferential direction of casing assembly is arranged on the wall of lower casing component 3, and at least two locating parts are along the extension side of the sliding slot To being arranged at intervals on lower casing component 3.Also, the mutual not phase in position of at least two locating parts on lower casing component 3 Together.In addition, the driving mechanism includes at least an actuating arm, it is set on the electric machine assembly, and the actuating arm is used for It moves in a corresponding sliding slot and is selectively matched with one at least two locating parts, it will with this The electric machine assembly limits one at least two axial position, at least two locating part respectively with institute State at least two axial positions one-to-one correspondence.Position of at least two locating parts on lower casing component 3 is different, can To be that axial position is not identical, it is not identical to be also possible to circumferential position.

Driving mechanism and gear adjustment mechanism in the embodiment of the present invention are with applicant's Authorization Notice No. Driving mechanism in the patent of invention of CN108815601B is similar with gear adjustment mechanism, and those skilled in the art should can manage Solution, there are many modes, and driving and gear adjustment may be implemented, and is not limited solely to embodiments of the present invention, the purpose of the present invention exists In overcoming defect present in the patent of invention.Specifically, inventors have found that when manually adjusting magnetic steel gap, Yi Sheng After having adjusted blood pump revolving speed, due to needing to take into account other surgical procedures, it is likely that can forget that motor gear is adjusted simultaneously, But if blood pump revolving speed and motor gear mismatch, the risk that haemolysis and thrombus generate can be increased, but also can reduce The working efficiency of blood pump.In the present embodiment, blood pump revolving speed is motor speed, be described below in i.e. with motor speed refer to blood pump Revolving speed is illustrated.

In consideration of it, blood pump pedestal 205 provided in an embodiment of the present invention is also provided with gear detecting mechanism, it to be used for detection-sensitive motor The axial position of component simultaneously generates axial position information, it is preferred that the gear detecting mechanism setting is on casing assembly and excellent Choosing generates the axial position information under the action of the driving mechanism, to pass through the axial position of electric machine assembly 2 (or motor Gear), further judge whether the current gear of motor matches the current rotating speed and/or target gear of motor.Further, originally The blood pump controller 201 and blood pump pedestal 205 that inventive embodiments provide are electrically connected, to obtain the axial position of electric machine assembly 2 Information, and whether the current gear for judging motor matches with the current rotating speed and/or target gear of motor, and works as motor Current rotating speed and motor current gear and/or target gear mismatch when issue prompt, to remind doctor in time to electricity The gear of machine is adjusted, and does so avoidable doctor and forgets to adjust motor gear simultaneously after having adjusted motor speed, so that Motor gear matches with motor speed always, to efficiently reduce the generation of haemolysis and thrombus, improves the work effect of blood pump Rate improves medical effect.

The gear detecting mechanism of the embodiment of the present invention is preferably provided on lower casing component 3, and logical with blood pump controller 201 News connection enables blood pump controller 201 to receive the axial position information of the electric machine assembly of gear detecting mechanism output, and then blood Pump controller 201 obtains the current gear information of motor, and then can determine whether motor according to the axial position information of electric machine assembly Whether current gear with the current rotating speed and/or target gear of motor matches (motor gear and motor speed correspond). When blood pump controller 201 judges that the current gear of motor and the current rotating speed and/or target gear of motor mismatch, then blood pump Controller 201 outwardly sends prompt information, reminds doctor to carry out gear adjusting with this.Doing so can be such that magnetic steel gap protects always It holds in optimum position, to guarantee offseting each other for magnetic pull and hydraulic coupling, makes bearing load at 210 upper and lower ends of impeller most Smallization promotes the working efficiency of centrifugal blood pump, reduces the abrasion and fever of centrifugal blood pump, reduces the formation of haemolysis and thrombus.

Further, the gear detecting mechanism includes the sensor for sensing actuating arm position, the quantity of sensor It is consistent with the quantity of locating part.It is described when the actuating arm cooperates with a corresponding locating part in actual application Actuating arm activates a corresponding sensor, to pass through a sensor definition being activated power information all the way, in turn The power information according to defined by obtains the axial position of the electric machine assembly.In the present embodiment, the gear detecting mechanism is preferred Including at least two sensors, at least two sensor definitions at least two-way power information, and these power information are different, At least two-way power information is corresponded at least two axial position respectively simultaneously.Further, the gear Testing agency further includes a detection circuit, and at least two sensors are set in the detection circuit, and detection electricity Road is configured to output at least two-way power information.Therefore, when the actuating arm cooperates with a corresponding locating part, institute Actuating arm is stated while activating a corresponding sensor, also by detection described in a sensor definition being activated Described in circuit output at least in two-way power information all the way.As long as and then blood pump controller 201 reads what detection circuit was exported The axial position information of corresponding power information all the way namely electric machine assembly can obtain the current of motor according to the road power information Gear does so the current gear information that can easily and fast and accurately obtain motor.In the embodiment of the present invention, power information can To be information of voltage, it is also possible to current information, is preferably recommended as information of voltage, blood pump controller 201 is made to read and handle Power information is more convenient.

And then in practical operation, the operation of magnetic coupling centrifugal blood pump can be controlled in the following way, guarantees the current of motor The current rotating speed and/or target gear of gear and motor are always consistent, and specific control method includes:

Using the gear detecting mechanism detection-sensitive motor component axial position and generate axial position information, and by the axial direction Location information feeds back to blood pump controller；

And then the blood pump controller obtains the current of motor by look-up table according to the axial position information of the electric machine assembly Gear information, and further judge the motor current gear whether the current rotating speed and/or target gear phase with motor Match, if mismatching, the blood pump controller outwardly sends prompt information, if matching, the blood pump controller is preferably not Any prompt information is outwardly sent, in order to avoid the operation of interference doctor.

Subsequently in conjunction with attached drawing, and for gear adjustment mechanism and driving mechanism disclosed in aforementioned granted patent, to this The blood pump and its blood pump pedestal, the structure of blood pump controller and implementation that inventive embodiments provide are further described.

Embodiment one >

As shown in figure 5, upper casing assembly 1 and electric machine assembly 2 are connected through a screw thread, and then can be adjusted by the driving mechanism Axial position of the thermomechanical components 2 of economizing on electricity relative to upper casing assembly 1 is adjusted to change the magnetic coupling gap of two magnet steel with this The magnetic pull that centrifugal pump is subject to.

As shown in fig. 6, the driving mechanism only includes an actuating arm 9 in the embodiment of the present invention, it is set up directly on motor On shell 8, and integral structure preferably is formed with motor housing 8.The outer wall of actuating arm 9 from motor housing 8 extends outwardly simultaneously It is preferred that extend outwardly in the axis direction perpendicular to electric machine assembly 2, in the sliding slot 10 that protrudes on lower casing component 3 (refering to figure 7) it, and further stretches out lower casing component 3 and operates actuating arm 9 for doctor.And after completing the adjusting of magnetic steel gap, the gear Actuating arm 9 can be fixed in adjustment mechanism, so that electric machine assembly 2, is on the one hand limited to currently by fixed entire electric machine assembly 2 Position, on the other hand also can avoid motor vibration.

As shown in Figure 7 to 10, the gear adjustment mechanism includes sliding slot 10 and positioning column 11, in the present embodiment, Sliding slot 10 be only one, and positioning column 11 i.e. constitute locating part above-mentioned, therefore, at least two positioning columns 11 respectively with motor At least two axial positions correspond.Sliding slot 10 is preferably arc chute.In the present embodiment, positioning column 11 is three, and can Three axial positions of electric machine assembly 2 are limited, namely define three magnetic steel gaps, these certain axial positions are different. Sliding slot 10 is arranged on the wall of lower casing component 3, and three positioning columns 11 along the chute 10 the setting of extending direction interval, and three A positioning column 11 is arranged on lower casing component 3 and position is different.When practical operation, actuating arm 9 is used in sliding slot 10 Movement is simultaneously selectively matched with a positioning column 11 in three positioning columns 11, is limited electric machine assembly 2 to three with this One in axial position, three positioning columns 11 are corresponded with three axial positions respectively.

As shown in figure 8, the gear adjustment mechanism further includes mounting groove 12, button hole and PBU pushbutton unit.Mounting groove 12 is opened On lower casing component 3, towards centrifugal pump 202, and mounting groove 12 is located at the inside of sliding slot 10 (i.e. along the diameter of electric machine assembly 2 To), and mounting groove 12 extends along sliding slot 10 and is connected with sliding slot 10, and button hole is (not shown) to be arranged in lower casing component It on 3 wall and is specifically located at the outer side-lower (i.e. along the axial direction of electric machine assembly) of sliding slot 10, and button hole is connected to mounting groove 12. Preferably, mounting groove 12 is located at the lower section of sliding slot 10, i.e., mounting groove 12 compared to sliding slot 10 lower casing component 3 axis direction On closer to the bottom of lower casing component 3.As shown in figure 9, the PBU pushbutton unit is movably disposed in mounting groove 12, depending on Position column 11 is set on PBU pushbutton unit, the PBU pushbutton unit for controlling positioning column 11 along the axial movement of electric machine assembly, from And selectively locked with actuating arm 9, sliding slot 10 exposes at least part positioning column 11.

As shown in Figure 9 and Figure 10, the PBU pushbutton unit includes movable-component and button 15, and movable-component includes solid Determine ontology 13 and elastic component 14, on fixed ontology 13, elastic component 14 and positioning column 11 are respectively distributed to admittedly the setting of positioning column 11 Determine the opposite sides of ontology 13, and one end of elastic component 14 is connected and fixed ontology 13, the other end connects the bottom of mounting groove 12, excellent Selecting elastic component 14 is spring.The quantity of elastic component 14 is identical as the quantity of positioning column 11 or not identical.Preferably, fixing this Body 13 and positioning column 11 are made into integration (refering to fig. 1 0).Button 15 is set in aforementioned button hole, for triggering fixed ontology 13 Axial along electric machine assembly is moved toward first direction, is moved to trigger entire PBU pushbutton unit towards first direction, first direction is excellent It is selected as the direction close to the bottom of blood pump pedestal.Elastic component 14 is then in fixed ontology 13 along the axial toward first party of electric machine assembly To elastic potential energy is stored when movement, to be moved by the elastic entire PBU pushbutton unit of power drive towards second direction, second party To being a pair of of opposite direction with first direction.

Using elastic component 14 identical with 11 quantity of positioning column as signal, three positioning columns 11 and three elastic components 14 are distinguished It is distributed in the two sides up and down of fixed ontology 13 along the extending direction of sliding slot 10, and the arc length between every two positioning column 11 Rotation angle corresponding to electric machine assembly 2.Since upper casing assembly 1 and electric machine assembly 2 are connected through a screw thread, upper casing assembly 1 Fixed, therefore, the rotary motion of electric machine assembly 2 will cause electric machine assembly 2 in axial movement, so that electric machine assembly 2 Axial displacement can determine according to lead of screw thread and electric machine assembly relative to the rotation angle of upper casing assembly 1, electricity here The rotation angle of thermomechanical components 2 is just limited by the arc length between two adjacent positioned columns 11.Specifically, the axial direction of sliding slot 10 Height can be 4-10mm, then the distance range that is axially movable of actuating arm 9 is 4-10mm, when actuating arm 9 is from a positioning column 11 are moved to another adjacent positioning column 11, actuating arm 9 will move up or decline 0.3-2mm namely electric machine assembly 2 moves up or under 0.3-2mm is dropped, while driving magnet steel being driven to move up or decline 0.3-2mm.

And then when operating, as shown in figures 7 and 9, it is only necessary to press lower button 15, fixed ontology can be forced using button 15 13 along electric machine assembly 2 axially downwardly (i.e. first direction) it is mobile, positioning column 11 also moves down therewith, while spring 14 is therewith Elastic potential energy is stored by compression, at this point, actuating arm 9 can be pulled to move along sliding slot 10 manually according to the current rotating speed of motor It is dynamic and electric machine assembly 2 is driven to rotate, the height of electric machine assembly 2 is adjusted, and actuating arm 9 circumferentially and longitudinally on movement Range is all limited by sliding slot 10.After actuating arm 9 is moved to suitable position namely electric machine assembly 2 has arrived proper height, unclamps Button 15 drives fixed ontology 13 along (the i.e. second party axially upwards of electric machine assembly 2 at this point, spring 14 discharges elastic potential energy To) mobile, so that one of positioning column 11 is fixed with 9 phase of actuating arm, so that locking press button device and actuating arm 9, realize electricity The position of thermomechanical components 2 is fixed.

As shown in Figure 7 to 9, the gear detecting mechanism is preferably comprised sensor 17, sensor 17 at least two, And it is arranged in a one-to-one correspondence with positioning column 11.In the present embodiment, positioning column 11 is three, and sensor 17 is also three, and preferably One sensor 17 is set on the side of each positioning column 11, and sensor 17 is set on movable-component, so that driving When arm 9 cooperates with a corresponding positioning column 11, which can also activate a sensor on 11 side of positioning column simultaneously 17, to limit a power information (such as voltage or electric current) by a sensor 17 being activated, and then blood pump controller As long as 201, which read the power information, can obtain the current gear of motor.Preferably, the gear detecting mechanism further includes detection electricity Road 16, sensor 17 are set in detection circuit, and detection circuit 16 can export at least two-way power information, per power information all the way It is limited by a sensor 17, and at least two-way power information is a pair of at least two axial position of motor one respectively It answers.In the present embodiment, detection circuit 16 exports three tunnel power information.When practical application, when actuating arm 9 and a corresponding positioning column When 11 cooperation, a corresponding sensor 17 is activated by actuating arm 9, and be activated a sensor 17 defines detection electricity In 16, road, three tunnel power information of output all the way.

In the present embodiment, sensor 17 is preferably switched, more preferably push switch 18, so that push switch 18 is driving It is closed under the action of arm 9 and realizes and conduct.But the present invention does not limit the type of push switch 18 particularly, can be electricity Resistive is also possible to condenser type, and can also be touch.Further, push switch 18 is preferably miniature touch-switch, It is not only small in size, but also good reliability, and precision is high, therefore can better meet the use demand of blood pump, and improve shift feeling The accuracy of survey.

Therefore, when practical application, when actuating arm 9 is matched with a corresponding positioning column 11,11 side of positioning column A push switch 18 be to be driven the pressing of arm 9 to enable detection circuit 16 defeated to be changed into closure by disconnection Corresponding power information all the way (such as a corresponding circuit path is connected to) in three tunnel power information out；Opposite, when actuating arm 9 When releasing cooperation with a corresponding positioning column 11, a push switch 18 on 11 side of positioning column is separated with actuating arm 9, from And disconnection is changed by closure, and make detection circuit 16 be cut off and can not export any power information (such as originally be connected to A circuit path be cut off).And then actuating arm 9 is operated again, when matching it with another positioning column 11, it can make Another push switch 18 closure occurs and so that detection circuit 17 is exported another way power information (such as another circuit path is connected It is logical).

Therefore, the detection circuit 16 in the present invention can export at least two-way power information, but can only export one each time Road power information, namely when electric machine assembly 2 is in one at least two axial positions, a corresponding sensor 17 makes to examine Slowdown monitoring circuit 16 can only export corresponding power information all the way, and these power information it is different and respectively with the axial position of electric machine assembly Set one-to-one correspondence.Therefore, blood pump controller 201 can judge tool locating for electric machine assembly by certain specific power information all the way Body position is not only simple in structure in this way, and reliability and accuracy are also high.If power information is information of voltage, blood pump control As long as device 201 processed can be back-calculated to obtain the motor gear of electric machine assembly according to voltage value, handle more convenient.The embodiment of the present invention In, the corresponding relationship of voltage value and motor gear can be stored in blood pump controller 201, and then according to the corresponding relationship you can learn that Motor gear.

As shown in figure 12, detection circuit 16 includes at least two circuit paths, the quantity of circuit path and electric machine assembly Axial position corresponds.In the embodiment of the present invention, the axial position of electric machine assembly is three, and therefore, circuit path is also three It is a and be arranged in parallel.Three circuit paths are circuit path L1, L2 and L3 respectively, and a pressing is arranged on each circuit path Switch 18, by the on-off in 18 control circuit channel of push switch, and each circuit path correspondence can export voltage all the way.Into one Step, the push switch 18 being provided at least one divider resistance 19, with the circuit path on each circuit path is connected in series. One end of detection circuit 16 is connect with power output end VDD simultaneously, and the other end is connect with ground terminal GND, is examined so as to form one Survey time road.

For Figure 12, circuit path L1 is connected in series by a divider resistance R1 and a push switch S1；Circuit Channel L2 is connected in series by a divider resistance R2 and a push switch S2；Circuit path L3 is by a divider resistance R3 and one A push switch S3 is connected in series；Wherein, the resistance value of each divider resistance is not identical so that the voltage value of each circuit path or Current value is also different.Herein, it should be noted that, in the circuit diagram of Figure 12, in order to facilitate understanding with different attached drawings Label illustrates divider resistance and push switch, i.e., S1, S2, S3 and 18 indicate push switch, and R1, R2, R3 and 19 equal tables Show divider resistance.

Using the voltage value in detection circuit channel as signal, when one in three push switches 18 is pressed, accordingly Circuit path i.e. be connected to, but also the voltage value U0 of the circuit path both ends CD being connected to is determined.And then blood As long as pump controller 201 reads the voltage value U0 of the circuit path both ends CD being connected to, can be pushed away according to voltage value U0 is counter The circuit path (circuit path and motor gear correspond) being currently accessed, you can learn that the push switch being currently accessed, Motor gear is just learned.

Further, detection circuit 16 further includes reference resistance R0, is arranged in series with each circuit path, but benchmark is electric Resistance R0 is not limited to be arranged on circuit board 161, also can be set on blood pump controller 201, as long as can play the role of partial pressure , and the present invention is not construed as limiting the resistance value of reference resistance and each divider resistance, and it can according to the actual situation freely Setting.

With continued reference to Fig. 8, Fig. 9 and Figure 11, detection circuit 16 further includes circuit board 161, is formed on circuit board 161 each Circuit path, and push switch 18 and divider resistance 19 are arranged on circuit board 161, to be constructed by circuit board 161 Detection circuit 16, structure is simple, at low cost.Further, it is additionally provided with the first connector 20 on circuit board 161, makes to detect Circuit 16 is electrically connected by the first connector 20 with blood pump controller 201.Further, second is provided on lower casing component 3 Connector 21 is electrically connected with the first connector 20 and blood pump controller 201 respectively.When practical operation, the two of detection circuit 16 End CD is connected to the second connector 21 by the first connector 20, and the first connector 20 is preferably patched by conducting wire 22 with second Part 21 is electrically connected.Here, detection circuit 16 and blood pump controller 201 are realized by the first connector 20 and the second connector 21 Communication, dismount and safeguard and is more convenient.

First connector 20 is preferably horizontal type structure, facilitates cabling, more preferable first connector 20 is along blood pump pedestal It is positioned radially, to facilitate plug and replacement gear detecting mechanism.It is furthermore preferred that the first connector 20 include separable plug and Socket, wherein the socket is arranged on circuit board 161, and plug is mounted on pluggablely on the socket, and the plug It is electrically connected by conducting wire 22 with the second connector 21.Therefore, when practical set, first the both ends of conducting wire 22 can be connect with first respectively The plug of plug-in unit 20 and the second connector 21 are welded, and cabling is too long in order to prevent or wobble effects motor operates, and leads Line 22 is close to the inner wall cabling of blood pump pedestal 205, and conducting wire 22 is fixed in the mode that buckle or solid glue can be used, and then only The plug of first connector 20 is docked with socket can be completed assembling.So, it when practical disassembly, is connect as long as first pulling out first The plug of plug-in unit 20 can remove entire gear detecting mechanism from blood pump pedestal, convenient for disassembly and assembly.Wherein, as shown in figure 8, Second connector 21 is fixed on the position that lower casing component 3 is reserved in the circumferential, for electrically connecting with blood pump controller 201 It connects, such as opens up connecting-disconnecting interface in the outer wall and 21 corresponding position of the second connector of lower casing component 3, and conducting wire 22 is along shell The inner wall cabling of component 3 is simultaneously connect with the plug of the second connector 21 and the first connector 20, and such arrangement will not be right The operating of motor impacts, and facilitates the dismounting and maintenance of gear detecting mechanism.

Further, the setting of circuit board 161 is on fixed ontology 13, and sensor 17 is arranged on circuit board 161, in this way Fixed ontology 13 can drive circuit board 161 along the axial movement of electric machine assembly, and push switch 18 and actuating arm 9 is made to cooperate or divide From.As shown in figure 9, circuit board 161 be fixed on fixed ontology 13 and with positioning column 11 ipsilateral arrangement, and each positioning column 11 Side is respectively provided with a push switch 18 and a divider resistance 19.And be routed for convenience, the shape of circuit board 161 preferably with The shape of a bottom plate on fixed ontology 13 matches, generally curved, with the area of this increasing circuit plate, and circuit board 161 On be provided with evacuation positioning column 11 notch, the interference with positioning column 11 is also avoided, to take full advantage of in blood pump pedestal Limited space makes gear detection convenient for interior installation and use on blood pump pedestal.

Further, fixed ontology 13 is preferably made of insulating material, concretely a plastic part, due to blood pump pedestal It is usually made of metal material, therefore makes that fixed ontology 13 is made from an insulative material, the wind of short circuit can occur to avoid circuit board Danger.It is furthermore preferred that fixed ontology 13 includes bottom plate 131 and the side plate 132 being erected on bottom plate 131, and it is arranged on bottom plate 131 Circuit board 161, screw fastening can be used in circuit board 161 or the mode of viscose glue is fixed on bottom plate 131, prevents circuit board loose with this It is dynamic to influence motor operating.And side plate 132 along the axially extending of casing assembly and is located at detection circuit 16 and blood pump pedestal 205 Between metal shell (i.e. side plate 132 is arranged close to the wall of casing assembly), with this by the electronic component and blood pump on circuit board 161 The metal shell of pedestal is isolated, and the risk of short circuit is further avoided.In the preferred scheme, on circuit board 161 all devices compared with Surface-mounted device is selected, goodly to further avoid the generation of short circuit.In other embodiments, fixed ontology 13 can also be by metal material Material is made, at this point it is possible to which circuit board is isolated with fixed ontology 13 using ordinary circuit board, and by coating technology, but applies The thickness that layer generates itself influences whether the height of the push switch 18 on circuit board 161, to will affect the essence of gear sensing Degree.

Further, as shown in Figure 10, an oblique protrusion 133 is also provided on side plate 132, oblique protrusion 133 has a slot Mouth 134, the inner surface of notch 134 are smooth bevel and have the angle that one is acute angle with bottom plate 131.Outside the one of the button Surface is matched with the inner surface of notch 134, and is also smooth bevel.Therefore, the button passes through the notch with oblique protrusion 133 134 cooperations, trigger the movement of entire PBU pushbutton unit.

It is common, the small volume of blood pump, so the volume of gear detecting mechanism also should be as small as possible, for this purpose, in selection electricity When sub- component, small in size, good reliability, electronic component with high accuracy are selected in the case where can satisfy requirement, Such as aforementioned miniature touch-switch, the width of these switches can preferably adapt in blood pump pedestal substantially in 5.0 ~ 6.0mm Portion's narrow space.In addition, it will be appreciated that, under natural conditions (i.e. no push switch), it is to fix the bottom plate of ontology 13 Benchmark, the height that each key height (thickness for considering circuit board) preferably should be less than positioning column 11 avoid influencing to drive The locking of arm 9 and positioning column 11, in addition, the height when actuating arm 9 is fixed relative to positioning column 11 is different, so each key Height it is also different.And actuation of keys stroke must be moderate, to ensure that actuating arm 9 can switch to key-press status by disconnecting Conducting.In addition to this, the pressing force of key is necessarily less than the elastic force of spring, and actuating arm 9 can under the support to ensure elastic force Keeping key is always on state.Further, miniature touch-switch belongs to electromechanical component, and the reliability of mechanical part is direct Determine whether entire gear detection function is normal.Therefore, it is preferable that should select good reliability or live through reliability test by Pressure number 1000 times or more touch-switch.

It is further, different for the height of positioning column 11 in each fixed position phase due to actuating arm 9, The pressing stroke of each push switch 18 must be matched with height, to guarantee under corresponding motor gear, push switch 18 Inner contact is driven the pressing of swing arm 9 and can be connected.For corresponding three push switches 18, following several combination can be Mode: the first, height is different and pressing stroke is identical；The second, the identical and pressing stroke of height is different；Third, height it is different and Pressing stroke is also different.In view of the pressing stroke of existing miniature touch-switch is usually in 2mm or so, adjustable extent is smaller, It is therefore preferable that height difference and the identical combination of pressing stroke, i.e., the height of three push switches 18 is different but pressing is gone Cheng Xiangtong.

Figure 13 and Figure 14 is subsequently combined, to the structure and the method for operation of the blood pump controller 201 of the embodiment of the present invention It is further described.

As shown in figure 13, blood pump controller 201 specifically includes sequentially connected acquisition unit 2011,2012 and of processing unit Reminding unit 2013.Acquisition unit 2011 is used to receive the axial position information of electric machine assembly caused by gear detecting mechanism simultaneously Feed back to processing unit 2012.Processing unit 2012 is used for the axial position information according to electric machine assembly, obtains the current of motor Gear information, and then according to the current gear information of motor, judge motor current gear whether with the current rotating speed of motor and/ Or target gear matches, if mismatching, reminder announced unit 2013 outwardly sends prompt information.

In embodiments of the present invention, acquisition unit 2011 is specially that an A/D acquires port, can will test the both ends of circuit 16 CD is connected to A/D acquisition port, the voltage value U0 for the circuit path for connecting the voltage value of A/D acquisition port as currently.Institute With as long as the voltage value that processing unit 2012 acquires A/D acquisition port can obtain the axial position of electric machine assembly.Here, A/D The voltage value of acquisition port needs to be further converted into digital signal and exports to processing unit 2012.

Blood pump controller 201 may also include signal conditioning unit 2014, with 2011 communication connection of acquisition unit.It is described The axial position information (such as voltage) of the electric machine assembly of gear detecting mechanism output first passes around the signal conditioning unit It exports after 2014 signal condition processing to A/D and acquires port.Modulus is done to the information that signal condition is crossed in turn in A/D acquisition port Output digit signals are converted to processing unit 2012.Processing unit 2012 can be a CPU processor, can be according to the number received Signal obtains the voltage value for the circuit path being currently accessed, and then determines motor according to the corresponding relationship of voltage and motor gear Current gear, then the match condition of the current gear of motor and the current rotating speed of motor and/target gear is judged, is sentenced When breaking to mismatch, reminder announced unit 2013 outwardly sends prompt information.

Reminding unit 2013 can be display screen, be also possible to phonetic alarm device, such as loudspeaker, sound equipment, or remind Unit 2013 can also include display screen and phonetic alarm device simultaneously.Unmatched information can be shown by display screen, and is led to Crossing loudspeaker can be transmitted voice alarm.The present invention does not limit prompt information transmitted by reminding unit 2013 specifically, both may be used Can also be alerted by voice by showing for the display screen that doctor watches, it can also pass through display screen and loudspeaker simultaneously Alerted, can also separately be prompted by the indicator light on blood pump controller or blood pump pedestal, such as indicator light lights generation Table " mismatch ", and when the current rotating speed of the current gear of motor and motor matches, then indicator light extinguishes.

With continued reference to Figure 13, blood pump controller 201 further includes electric machine controller 2015, is controlled for the revolving speed to motor On the other hand system is also used for the revolving speed of acquisition motor, specific acquisition method is the prior art, and and will not be described here in detail.Motor control The collected motor speed of device 2015 is after the signal condition of signal conditioning unit 2014, using the mould of A/D acquisition port Number conversion is exported to processing unit 2012.

In the present embodiment, blood pump controller 201 also there is gear to adjust prompting function, in motor speed and target It issues and reminds when gear mismatches, in order to which doctor is in time adjusted gear.Specifically, blood pump controller 201 is preferably gone back Including storage unit 2016, for storing the object gear information of motor and the corresponding relationship of revolving speed.Come with three motor gears It says, the object gear information includes:

When blood pump revolving speed is lower than the first critical speed, object gear information is the 1st gear；

When blood pump revolving speed is between the first critical speed and critical speed of second order, object gear information is the 2nd gear；

When blood pump revolving speed is higher than critical speed of second order, object gear information is the 3rd gear.

The accessible storage unit 2016 of processing unit 2012, obtains the target of motor corresponding to the current rotating speed of motor Gear.

More specifically, as shown in figure 14, when motor speed is less than the first critical speed S1, the target gear of motor is set It is scheduled on the 1st grade；When motor speed is between the first critical speed S1 and critical speed of second order S2, the target gear of motor is set It is scheduled on the 2nd gear；When motor speed is greater than critical speed of second order S2, the target gear of motor is set in the 3rd gear；Three motor shelves Position respectively correspond a magnetic steel gap, when the current rotating speed of motor within the above range when, motor also should be in corresponding target Gear if motor gear and target gear that detection obtains mismatch needs that gear is adjusted.

Since there are errors for motor speed measurement, when actual speed and the first critical speed S1 or critical speed of second order S2 phase When close, it may appear that the case where gear frequently jumps, this will increase the operation difficulty of doctor, and will affect the standard of gear adjustment Exactness.For example, the first critical speed S1 is assumed to 2500rpm, critical speed of second order 3500rpm, and it is adjacent twice by The actual speed monitored is respectively 2490 rpm and 2510 rpm, it is assumed that previous motor gear is the 2nd grade, at this point, processing is single Member 2012 judges 2490 rpm less than the first critical speed S1, then needs for motor gear to be adjusted to the 1st grade from the 2nd grade, and Post-processing unit 2012 judges that 2510 rpm greater than the first revolving speed S1 and less than the second revolving speed S2, are then needed motor gear again again It is adjusted to the 2nd gear from the 1st grade, just occurs the case where gear frequently jumps in this way.In order to avoid the generation of this case: one In a little embodiments, after processing unit 2013 is averaged the multiple motor speeds continuously measured, then being averaged motor speed Value carries out matching judgment with motor gear, can eliminate the influence of measurement error to a certain extent in this way；In the present embodiment, sentencing When whether power machine revolving speed matches with target gear, processing unit 2012 is preferably by carrying out return difference speed considerations to motor speed The influence of measurement error is eliminated, the accuracy of gear adjustment can be effectively improved using this scheme.

The principle compensated to motor speed is as shown in figure 14.Specifically, blood pump controller 201 is preferably according to same time Differential speed Δ compensates each critical speed, and blood pump controller 201 is made to judge the current shelves of motor according to compensated critical speed The match condition of the current rotating speed (and/or target gear) of position and motor.When the motor speed of sampling front and back is in (S- Δ, S+ Δ) in the range of when, then blood pump controller 201 judges the current gear of motor and current rotating speed (and/or the target shift of motor Position) match without sending prompt information, otherwise it is judged as the current gear of motor and current rotating speed (and/or the target of motor Gear) it mismatches and prompt information is sent by reminding unit and carries out shift prompting.Wherein, S is the critical speed before compensation.Not When compensation, when motor speed is less than S, target motor gear is low-grade location, and when motor speed is greater than S, target motor shelves Position is high tap position, therefore, as long as motor speed is not less than S, that is, needs by low grade to adjust motor gear to top grade, conversely, working as Motor speed then needs by top grade to adjust motor gear to low grade by being adapted to below S not less than S.But after compensation, only Have when motor speed lower than S- Δ by changing into not less than S+ Δ, just needs by low grade to adjust motor gear to top grade, instead It just needs by top grade to adjust motor gear to low grade when motor speed is by being adapted to below S- Δ not less than S+ Δ.And The value of return difference revolving speed Δ is related with revolving speed sampling precision, it is necessary to greater than the maximum value of sampling error, usually desirable 50 ~ 100 rpm。

More specifically, it only just needs when motor speed is by changing into S1+ Δ or more lower than S1- Δ by motor gear It is adjusted by the 1st grade to the 2nd grade, i.e., the previous gear of motor is the 1st grade, but when motor speed changes to not less than S1+ Δ, electricity Machine gear is adjusted to the 2nd grade；Conversely, needing will be electric only when motor speed is by changing into S1- Δ or less not less than S1+ Δ Machine gear is adjusted by the 2nd grade to the 1st grade.Similarly, only when motor speed is by changing into S2+ not less than S1+ Δ and lower than S2- Δ When more than Δ, need by the 2nd grade to adjust motor gear to the 3rd grade；Conversely, only when motor speed not less than S2+ Δ by changing When becoming less than S2- Δ and being higher than S1+ Δ, need by the 3rd grade to adjust motor gear to the 2nd grade.Such as first critical speed S1 is 2500rpm, and critical speed of second order S2 is 3500rpm, Δ 50rpm, and then, compensated first critical speed exists In the preset range of (2450rpm ~ 2550rpm), predetermined model of the compensated critical speed of second order at (3450rpm ~ 3550rpm) In enclosing.Only when motor speed lower than 2450rpm by changing into not less than 2550rpm, just motor gear is adjusted by the 1st grade To the 2nd grade；Alternatively, motor gear is adjusted by the 2nd grade when motor speed is by being adapted to below 2450rpm not less than 2550rpm It is whole to the 1st grade.Similarly, when motor speed by not less than 2550rpm change into not less than 3550rpm when, just by motor gear by 2nd grade adjusts to the 3rd grade, and when motor speed not less than 3550rpm by being adapted to below 3450rpm and being higher than 2550rpm, Motor gear is adjusted by the 3rd grade to the 2nd grade.

It is assumed that the current gear of motor is the 2nd grade, i.e., the current rotating speed of motor in 2550rpm more than or lower than 3450rpm, And the motor speed then acquired be 2540rpm, at this point, processing unit 2012 determine motor current gear and motor it is current Revolving speed and/or target gear match, if the motor speed of acquisition becomes 2450rpm, processing unit 2012 determines motor Current gear and motor current rotating speed and/or target gear mismatch and send prompt information, prompt doctor need will be electric Machine gear is adjusted by the 2nd grade to the 1st grade.Similar, it is assumed that the current gear of motor is the 1st grade, i.e. the current rotating speed of motor is low In 2450rpm, then just needing to adjust motor gear by the 1st grade when then only the motor speed of acquisition is not less than 2550rpm It is whole to the 2nd grade, otherwise motor gear is not adjusted.It does so, can effectively overcome the problems, such as that gear frequently jumps, make gear tune Whole reliability and accuracy is higher.Certainly in other embodiments, rotary speed parameter and Rule of judgment, the present invention couple also can be changed This is with no restrictions.

Further, processing unit 2012 includes judgment module and compensating module.Wherein the compensating module is used for basis The critical speed of return difference revolving speed Δ small electromotor, so that compensated critical speed is in a preset range.And then the judgement Whether module is used to judge the current rotating speed of motor in the preset range of compensated critical speed: if so, thinking motor Current gear and the current rotating speed and/or target gear of motor match without outwardly sending prompt information；If it is not, then sentencing Disconnected module further according to the current rotating speed of motor obtain motor target gear, and judge motor target gear whether with electricity The current gear of machine matches, if mismatching, reminding unit 2013 outwardly sends prompt information.

Have at least two critical speeds with motor, i.e. the first critical speed and critical speed of second order, at this point, processing Unit 2012 judges the specific implementation the side whether current gear of motor and the current rotating speed of motor and/or target gear match Formula are as follows:

The compensating module described first compensates the first critical speed and critical speed of second order using the same return difference revolving speed Δ respectively, with Compensated first critical speed is set to be in the first preset range, compensated critical speed of second order is in the second preset range, And then further according to compensated critical speed to determine whether needing to upshift or downshift；

Then in practical operation, after the revolving speed of acquisition telegram in reply machine, the judgment module first determines whether the current rotating speed of motor (i.e. The motor speed currently acquired) whether in first preset range or second preset range, if judgement the result is that The current rotating speed of motor is in first preset range or second preset range, then without adjusting gear, if judgement The result is that the current rotating speed of motor is neither in the first preset range, also not in the second preset range, then the judgment module Also need further to obtain the target gear of motor according to the current rotating speed of motor, so judge motor target gear whether with The current gear of motor matches, if mismatching, reminder announced unit 2013 outwardly sends prompt information.Such as motor Current gear is the 1st grade, and the target gear of motor corresponding to the current rotating speed of motor is the 2nd grade, then needs to adjust motor Gear, opposite, if the target gear of motor corresponding to the current rotating speed of motor is also the 1st grade, do not need adjustment electricity Machine gear.

Therefore, in blood pump actual moving process, once blood pump controller 201 monitors the current gear and motor of motor Current rotating speed and/or target gear mismatch, then prompt is outwardly sent immediately, and then doctor is according to prompt, by manual Operation actuating arm 9 adjusts the axial position of electric machine assembly 2 to target position, in target location, actuating arm 9 and corresponding one A 11 phase of positioning column locking is simultaneously in contact with the push switch 18 on 11 side of positioning column and its closure is connected, to trigger correspondence Circuit path be connected to, at this point, blood pump controller 201, which by A/D acquires port, can collect and be currently connected to The voltage value of circuit path, and be converted into the voltage value to pass processing unit 2012 after digital signal back and judge.It does so, So that magnetic steel gap is matched always with the revolving speed of motor, to reduce the abrasion and fever of blood pump, reduces the shape of haemolysis and thrombus At, and promote the working efficiency of blood pump.And blood pump controller 201 also overcomes sampling speed error using return difference speed considerations The problem of bring influences, and gear is frequently beated when avoiding blood pump revolving speed near critical speed, to improve gear inspection The reliability and accuracy of survey.

A kind of blood pump pedestal is also provided in the embodiment of the present invention two.The circuit of the control of blood pump controller involved in the embodiment is former Reason, selected component, mounting means and backoff algorithm are similar with the first embodiment, herein only to the driving machine of embodiment two Structure, the structure of gear adjustment mechanism and gear detecting mechanism and the method for operation are illustrated, and something in common repeats no more.

Figure 15 is the main view of blood pump pedestal provided by Embodiment 2 of the present invention, and Figure 16 is provided by Embodiment 2 of the present invention The axial sectional view of blood pump pedestal, Figure 17 are the exploded view of blood pump pedestal provided by Embodiment 2 of the present invention, and Figure 18 is the present invention The axial sectional view for the electric machine assembly that embodiment two provides, Figure 19 are the solid of lower casing component provided by Embodiment 2 of the present invention Figure.

As shown in Figure 15 to Figure 19, blood pump pedestal 205 also includes upper casing assembly 301, electric machine assembly 302, lower casing group Part 303 and driving mechanism, electric machine assembly 302 include motor 306, driving magnet steel 304, fixed structure 305,308 and of motor housing Cooling pad 307.

The structure of the blood pump pedestal 205 of the present embodiment is basically the same as the first embodiment, and is repeated no more below to something in common, It is described only for difference.

As shown in figure 18, actuating arm 310 is set up directly on motor housing 308, and the quantity of actuating arm 310 is two. Two actuating arms 310 arrange preferably about the axisymmetrical of electric machine assembly 302, actuating arm 310 from the outer wall of motor housing 308 to Outer extension, and direction is preferably extended over perpendicular to the axis direction of electric machine assembly 302.After extending outwardly, actuating arm 310 is for protruding into In sliding slot 314 on lower casing component 303, and lower casing component 303 is further stretched out, as shown in figure 19.

As shown in figure 19, the gear adjustment mechanism includes sliding slot 314 and fixed groove 313, fixed groove 313 here Locating part as above-mentioned.But in the present embodiment, sliding slot 314 is two, and two sliding slots 314 are oppositely arranged on lower casing component On 303 wall, every sliding slot 314 is along the circumferentially extending of lower casing component 303, and one end of every sliding slot 314 is preferably provided with One guide groove 315, guide groove 315 open up and open at one end along axial direction, to allow actuating arm 310 to be oriented to via one Slot 315 enters a corresponding sliding slot 314 and moves in sliding slot 314.In addition, 314 extension along the chute on every sliding slot 314 Direction is arranged at intervals at least two fixed grooves 313, and the depth of at least two fixed grooves 313 on same sliding slot 314 Different (have different axial heights), and on two corresponding sliding slots 314 corresponding fixed groove 313 depth All identical, identical a pair of of the fixed groove 313 of depth just corresponds to an axial position of electric machine assembly.

Specifically, in assembling, two actuating arms 310 are inserted into a corresponding guide groove 315 in advance, and then operate When, it is only necessary to according to current motor speed, actuating arm 310 is lifted manually and imports sliding slot 314 and selectively inserts to extremely One in few two fixed grooves 313.If inserting from different fixed grooves 313, there is electric machine assembly 302 Different axial positions.More preferably, in being provided with buckle 311 on actuating arm 310, buckle 311 and actuating arm 310 rotationally phase Connection.After the setting in place of actuating arm 310, by the buckle 311 on actuating arm 310 by electric machine assembly 302 and lower casing component 303 Peripheric lockings, avoid motor from shaking.

When practical application, the depth of a pair of of fixed groove 313 joined together by two actuating arms 310 is all identical, is ensured with this Electric machine assembly 102 will not glance off.In addition, actuating arm 310 is moved to by opening buckle 311 and lifting actuating arm 310 It is matched with other fixed grooves 313, the position of electric machine assembly 302 can be readjusted, operation is very easy, and presses again Buckle 311 can fix the position of electric machine assembly 302.

In the present embodiment, also circumferential on the side wall of lower casing component 303 to have opened up mounting groove 317, as shown in figure 19. The interior side-lower of sliding slot 314 is arranged in mounting groove 317, preferably only opens up an installation in the interior side-lower of a sliding slot 314 Slot 317, and the circuit board 318 of the present embodiment is directly mounted in mounting groove 317.

As shown in figure 19, a through-hole 24 is offered in each fixed groove 313 of the sliding slot 314 of 317 top of mounting groove, It is connected with mounting groove 317, has such as opened up three through-holes 24, these through-holes 24 makes sliding slot 314 and the mounting groove 317 of lower section exist It is penetrated through in axial direction.As shown in figure 20, detection circuit 16 includes a circuit board 318, and at least two are arranged on circuit board 318 and presses Compress switch 18, by taking three push switches 18 as an example, three push switches 18 along circuit board 318 edge arranged for interval, preferably Circuit board 318 is generally curved, is matched with the shape with mounting groove 317.

As shown in figure 21, when practical set, circuit board 318 is placed in mounting groove 317, and each push switch 18 is divided It is not aligned in the axial direction with a fixed groove 313, and the key of each push switch 18 is inserted into a corresponding through-hole 24, when The key of right push switch 18 needs further stretching through-hole 24 and can receive the pressing of actuating arm 310.Then, practical application In the process, actuating arm 310 is adjusted every time to corresponding fixed groove 313 and after placing completion, and actuating arm 310 can all be pressed onto correspondence Push switch 18 key and make its closure, so that but also a circuit path in detection circuit 16 is connected to.Conversely, When actuating arm 30 leaves corresponding fixed groove 313, corresponding push switch 18 is released and resets realization and disconnect.

In addition, the shape of circuit board 318 is different from the shape of circuit board 161 of embodiment one, and as shown in figure 20, circuit board 318 notch without opening up evacuation, therefore shape can be matched with the shape of mounting groove 317, to increase the face of circuit board 318 Product.In addition, preferably circuit board is fixed on installation by the component made of an insulating materials in order to avoid short circuit occurs for circuit board In slot 317, such as fixation ontology L-shaped as optional embodiment one kind, on the one hand fixed by the bottom plate of fixed ontology Circuit board reduces the risk that short circuit occurs with this on the other hand by the side plate isolation circuit plate and metal shell of fixed ontology. Alternatively, in other embodiments, can also be not provided with fixing ontology made of insulating materials, but pass through coating technology for circuit board It is isolated with the metal shell of surrounding.The first connector 20 is additionally provided on circuit board 318, optionally in lower casing component The second connector being connected with the first connector 20 is arranged in the circumferential spare bits place of setting on 303, and details are not described herein again.

Therefore, in the present embodiment, if blood pump controller 201 monitors that the current gear of motor and motor work as forward Speed and/or target gear mismatch, then outwardly send prompt immediately, and then doctor is driven according to prompt by manual operation Arm 310 adjusts the axial position of electric machine assembly 2 to target position, and in target location, actuating arm 310 is inserted into corresponding one On a fixed groove 313 and by 311 locking actuating arm 310 of buckle, while actuating arm 310 connects with the push switch 18 of bottom It touches and makes its closure conducting, be connected to trigger a corresponding circuit path, at this point, blood pump controller 201 is adopted by A/D Collection port can collect the voltage value for the circuit path being currently connected to, and pass back after the voltage value is converted into digital signal Processing unit 2012 is judged.

To sum up, the technical solution provided according to embodiments of the present invention, magnetic coupling centrifugal blood pump of the invention utilize blood pump control Gear detecting mechanism on device and blood pump pedestal processed, realizes the mesh monitored in real time to blood pump revolving speed and motor gear , and when motor gear and blood pump revolving speed mismatch, the also transmittable prompt of blood pump controller prompts doctor in time to motor Gear is adjusted, and does so the work load that can reduce doctor, and the formation of haemolysis and thrombus is effectively reduced, and improves blood pump Working efficiency, improve medical effect, moreover, monitoring the axial position of electric machine assembly using power information, can be more convenient, quickly and The gear information for accurately obtaining motor reduces the difficulty of gear detection and improves the precision of gear detection.

Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims Range.

Claims

1. a kind of blood pump pedestal, including casing assembly, electric machine assembly, driving mechanism and gear adjustment mechanism；The electric machine assembly It is set in the casing assembly, the electric machine assembly includes the motor being connected and driving magnet steel, the driving mechanism and institute Electric machine assembly connection is stated, for driving the electric machine assembly to axially move relative to the casing assembly, so that the motor Component has at least two axial positions relative to the casing assembly, and the gear adjustment mechanism is arranged in the casing assembly On, for matching with the driving mechanism, the electric machine assembly is limited into one at least two axial position It is a, which is characterized in that the blood pump pedestal further include:

Gear detecting mechanism, for sensing the axial position of the electric machine assembly and generating axial position information, the axial direction position Confidence breath is for judging whether the current gear of the motor matches with the current rotating speed and/or target gear of the motor.

2. blood pump pedestal according to claim 1, which is characterized in that the gear detecting mechanism is arranged in the shell group On part, and the axial position information is generated under the action of the driving mechanism.

3. blood pump pedestal according to claim 1, which is characterized in that the gear adjustment mechanism includes at least two limits Part, the driving mechanism include at least one actuating arm；The actuating arm for selectively at least two locating part In one match, electric machine assembly is limited one at least two axial position with this, it is described at least Two locating parts are corresponded at least two axial position respectively；

4. blood pump pedestal according to claim 3, which is characterized in that the gear detecting mechanism further includes a detection electricity Road, at least two sensors are set in the detection circuit, and the detection circuit is configured to output at least two Road power information, at least two-way power information are corresponded at least two axial position respectively；

Wherein: when the actuating arm and a locating part cooperate, the actuating arm activates a corresponding sensing Device, described in a sensor definition being activated at least in two-way power information all the way.

5. blood pump pedestal according to claim 4, which is characterized in that the locating part is positioning column and can be along the electricity A sensor is arranged on the side of each positioning column in the axial movement of thermomechanical components, and the sensor also can Along the electric machine assembly axial movement and with the actuating arm cooperate or separate so that the actuating arm with the positioning column The corresponding sensor is activated when cooperation.

6. blood pump pedestal according to claim 5, which is characterized in that the gear adjustment mechanism further includes at least one sliding Slot and at least one mounting groove, the sliding slot and the mounting groove are arranged each along the circumferential of the casing assembly described outer It on the wall of shell component and is interconnected, at least two positioning columns are movably disposed on the mounting groove and along the cunning The extending direction interval of slot is arranged；

7. blood pump pedestal according to claim 6, which is characterized in that the gear adjustment mechanism further include PBU pushbutton unit and Button hole, the button hole are arranged on the wall of the casing assembly and are connected to the mounting groove；The PBU pushbutton unit includes Movable-component and button, the movable-component are movably disposed in the mounting groove and including elastic component, the biographies Sensor and the locating part are all set on the movable-component, and the button is set in the button hole；

8. blood pump pedestal according to claim 7, which is characterized in that the detection circuit includes circuit board, described removable Dynamic component further includes fixed ontology, and the fixed ontology is made of insulating material and is movably disposed in the mounting groove, And the circuit board and the locating part are arranged on the fixed ontology, the sensor is arranged on the circuit board.

9. blood pump pedestal according to claim 8, which is characterized in that the fixed ontology includes bottom plate and is erected in described Side plate on bottom plate, the circuit board are set on the bottom plate, the side plate along the casing assembly it is axially extending simultaneously Wall close to the casing assembly is arranged.

10. blood pump pedestal according to claim 9, which is characterized in that the locating part is arranged on the bottom plate, described Elastic component and the locating part are separately positioned on the opposite sides of the bottom plate, and one end of the elastic component connects the bottom plate, The other end connects the bottom of the mounting groove；

11. blood pump pedestal according to claim 9, which is characterized in that an oblique protrusion is also provided on the side plate, it is described Oblique protrusion has a notch, and an outer surface of the button is matched with the inner surface of the notch, the interior table of the notch Face is smooth bevel and has the angle that one is acute angle with the bottom plate.

12. blood pump pedestal according to claim 4, which is characterized in that the locating part is fixed groove, each described solid The depth for determining groove is different, and a sensor is arranged in each fixed groove.

13. blood pump pedestal according to claim 12, which is characterized in that the gear adjustment mechanism further includes at least one Sliding slot and at least one mounting groove, the sliding slot and the mounting groove are arranged on the wall of the casing assembly, and at least two The setting of the extending direction interval on the sliding slot and along the sliding slot is arranged in a fixed groove；

14. blood pump pedestal according to claim 13, which is characterized in that the detection circuit includes circuit board, the electricity Road plate is arranged in the mounting groove, and the sensor is arranged on the circuit board, and the circuit board is arc-shaped.

15. blood pump pedestal according to claim 3, which is characterized in that the sensor is a push switch, the detection Circuit includes at least two circuit paths, and at least two circuit path is arranged in parallel, and is set on each circuit path Set the push switch, each push switch is used to control the on-off of a corresponding circuit path, and each institute It states circuit path and corresponds to the power information all the way；

When the actuating arm and a locating part cooperate, a corresponding push switch, which is changed by disconnection, is closed It closes, and is connected to a corresponding circuit path；

When the actuating arm is separated with a locating part, a corresponding push switch is changed by closure disconnected It opens, and is cut off a corresponding circuit path.

16. blood pump pedestal according to claim 15, which is characterized in that the detection circuit further includes circuit board, described At least two circuit path is formed on circuit board, the push switch is set on the circuit board；

17. blood pump pedestal according to claim 15, which is characterized in that the push switch is miniature touch-switch.

18. blood pump pedestal according to claim 16, which is characterized in that be additionally provided with first on the circuit board and patch Part, the detection circuit are electrically connected by first connector with blood pump controller.

19. blood pump pedestal according to claim 18, which is characterized in that first connector be horizontal type structure and including Separable socket and plug；The socket is arranged on the circuit board, and the blood pump pedestal further includes the second connector, institute It states plug to be electrically connected by conducting wire with second connector, second connector is electrically connected with the blood pump controller.

20. blood pump pedestal according to claim 19, which is characterized in that the conducting wire along the casing assembly inner wall It arranges and fixes.

21. blood pump pedestal according to claim 3, which is characterized in that the power information is information of voltage.

22. a kind of blood pump controller, for being electrically connected with blood pump pedestal described according to claim 1 any one of -21, It is characterized in that, the blood pump controller includes the acquisition unit, processing unit and reminding unit being sequentially connected electrically；

23. blood pump controller according to claim 22, which is characterized in that the processing unit includes:

If so, the reminding unit does not send the prompt information；

If it is not, the reminding unit outwardly sends the prompt information.

24. blood pump controller according to claim 23, which is characterized in that the motor at least has the first critical speed And critical speed of second order, first critical speed are less than the critical speed of second order；

If so, the reminding unit does not send the prompt information；

If it is not, then the reminding unit outwardly sends the prompt information.

25. blood pump controller according to claim 24, which is characterized in that the blood pump controller further includes that storage is single Member, for storing the object gear information of the motor, the object gear information includes:

26. blood pump controller according to claim 23, which is characterized in that the return difference revolving speed is sampled greater than motor speed The maximum value of error.

27. blood pump controller according to claim 26, which is characterized in that the value range of the return difference revolving speed be 50 ~ 100 rpm。

28. blood pump controller according to claim 22, which is characterized in that the acquisition unit is that an A/D acquires port, It exports for the axial position information of the electric machine assembly to be converted to digital signal to the processing unit.

29. blood pump controller according to claim 22, which is characterized in that the blood pump controller further includes signal condition Unit is electrically connected with the acquisition unit；Letter of the axial position information of the electric machine assembly Jing Guo the signal conditioning unit Output is to the acquisition unit after number conditioning processing.

30. blood pump controller according to claim 22, which is characterized in that the prompt information includes image information, language At least one of message breath and light information.

31. a kind of magnetic coupling centrifugal blood pump characterized by comprising

Blood pump pedestal described in any one of -21 according to claim 1；And

The blood pump controller according to any one of claim 22-30.

32. a kind of control method of magnetic coupling centrifugal blood pump as claimed in claim 31 characterized by comprising

33. the control method of magnetic coupling centrifugal blood pump according to claim 32, which is characterized in that the blood pump controller Judge specific steps that whether current gear of the motor matches with the current rotating speed and/or target gear of the motor also Include:

If so, the blood pump controller does not send the prompt information；

If it is not, further obtaining the object gear information of motor according to the current rotating speed of motor, and judge the target of the motor Whether gear matches with the current gear of the motor；

If so, the blood pump controller does not send the prompt information；

If it is not, the blood pump controller sends the prompt information.

34. the control method of magnetic coupling centrifugal blood pump according to claim 33, which is characterized in that the motor at least has There are the first critical speed and critical speed of second order, first critical speed is less than the critical speed of second order, and the blood pump Controller judges the specific steps whether current gear of the motor matches with the current rotating speed of the motor further include:

The blood pump controller compensates first critical speed and described second using the same return difference revolving speed respectively and faces Boundary's revolving speed, so that compensated first critical speed is in the first preset range and compensated described second critical Revolving speed is in the second preset range, and first preset range is not overlapped with second preset range；

If so, the reminding unit does not send the prompt information；

If it is not, then the reminding unit outwardly sends the prompt information.