CN209033311U - Heart chamber auxiliary pump - Google Patents
Heart chamber auxiliary pump Download PDFInfo
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- CN209033311U CN209033311U CN201820047665.1U CN201820047665U CN209033311U CN 209033311 U CN209033311 U CN 209033311U CN 201820047665 U CN201820047665 U CN 201820047665U CN 209033311 U CN209033311 U CN 209033311U
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Abstract
This application involves a kind of heart chamber auxiliary pumps, including drain cone, impeller, motor, determine magnet ring and dynamic magnet ring, are all set in hollow shell with upper-part, the shell is additionally provided with entrance and exit.Entrance described in the drainage cone face.The impeller is simultaneously sheathed on the drainage cone, inside sets runner.The rotor of the motor is fixedly arranged on the impeller.When the wheel rotation described in the motor driven, the pair of magnet ring is used for so that the impeller is in suspended state radially, and the stator and the rotor make the impeller be in suspended state in the axial direction.Herein described heart chamber auxiliary pump structure is simple, small volume, has higher blood compatibility.
Description
Technical field
This application involves medical instruments field more particularly to a kind of heart chamber auxiliary pumps.
Background technique
Heart chamber auxiliary pump is that a kind of draw blood by venous system or heart is pumped directly into arterial system, partly or entirely
The artificial mechanism device to do work instead of ventricle.To improve blood compatibility, the side effect of clinical treatment is reduced, ventricle assists at present
The development trend of pump is using non-contact type bearing technology.It is characterized in that realizing the outstanding of impeller and rotor using physics mode
It is floating.Due to not contacted directly between rotor and stator in the operation of impeller, it is thus possible to it is auxiliary to maximally reduce ventricle
The destruction pumped to blood is helped, and the generation of thrombus and haemolysis is effectively reduced, has the advantages that high reliablity and service life are long, is suitble to length
Phase is implanted into human body.
The general requirement of heart chamber auxiliary pump is that lightweight, miniaturization, low-power consumption and structure are simple, can satisfy operation
Requirement and improve implantation after patient comfort level.For this purpose, impeller does not use machine driving mostly in existing heart chamber auxiliary pump
Mode, but rotated using suspended pattern, to save the occupied space of transmission mechanism, further compression volume.
There are many current impeller suspended modes, but existing suspended pattern often exists that end clearance is small, blood compatibility is poor,
Or multiple displacement sensors and independent active levitation driving coil are needed to assist, leading to heart chamber auxiliary pump, structure is complicated,
The shortcomings that size and weight are big, and reliability reduces, and power consumption and cost also accordingly increase.Further, if such suspension mechanism
It is arranged according to axial manner, it will cause the axial dimension of heart chamber auxiliary pump to increase, be unfavorable for minimizing.
Utility model content
The application's is designed to provide a kind of heart chamber auxiliary pump for taking into account blood compatibility and miniaturization, and structure is simple,
Has higher reliability.The application heart chamber auxiliary pump includes following technical solution:
A kind of heart chamber auxiliary pump, including drain cone, impeller, motor, determine magnet ring and dynamic magnet ring；The impeller set is set to described
Drainage cone is peripheral, sets runner in the impeller, the runner forms radial passage in the impeller；The motor is for driving
The wheel rotation；Described to determine magnet ring and the dynamic magnet ring and be distributed along the radial direction of the impeller, described to determine magnet ring fixed
It is bored in the drainage, the dynamic magnet ring is fixedly arranged on the impeller, described to determine magnet ring and the magnetic pole of the dynamic magnet ring towards identical, institute
It states and determines magnet ring and the dynamic magnet ring cooperation so that the relatively described drainage cone of the impeller is radially in suspended state.
Wherein, the heart chamber auxiliary pump includes hollow shell, and inside is cavity, is divided into epicoele and cavity of resorption, the cavity
It is connected to the entrance and exit of the hull outside；The motor includes stator and rotor, and the drainage cone and the impeller are located at
The epicoele, the stator are fixedly arranged on the cavity of resorption.
Wherein, on the axis direction perpendicular to the impeller, the epicoele includes the first inner wall close to the entrance
With the second inner wall far from the entrance；The impeller includes first face opposite with first inner wall, and with described
The second opposite face of two inner walls；The heart chamber auxiliary pump further includes a thrust fluid bearing, the thrust fluid bearing setting
Between first inner wall and first face or the thrust fluid bearing is set to second inner wall and described second
Between face；The thrust fluid bearing and the motor collective effect, so that being in the axial direction when the wheel rotation outstanding
Floating state.
Wherein, the thrust fluid bearing is two, is divided into lifting force fluid bearing and lower thrust fluid bearing, it is described on
Thrust fluid bearing is between first inner wall and first face；The lower thrust fluid bearing is located in described second
Between wall and second face, the lifting force fluid bearing, the lower thrust fluid bearing and the motor collective effect, with
So that suspended state is in when the wheel rotation in the axial direction.
Wherein, the thrust fluid bearing is set on first inner wall and/or second inner wall of the shell.
Wherein, on the axis direction of the impeller, the rotor and the dynamic magnet ring are contained in the impeller.
Wherein, on the axis direction of the impeller, the rotor is between the runner and second face.
Wherein, on the axis direction of the impeller, the dynamic magnet ring also is located between the runner and second face.
Wherein, the rotor includes the axial magnet and tangential magnet for being spaced apart from each other setting, the axial magnet and described
Tangential magnet is sector, and the axial magnet is at least arranged two, and the magnetic pole of two axial magnets is reversed each other.
Wherein, the outlet is set on the side wall between first inner wall and second inner wall.
Herein described heart chamber auxiliary pump, by the inner cavity of the shell by the partition be divided into the epicoele and it is described under
Chamber, wherein the cavity of resorption is used to seal the stator of the motor, the rotor and the impeller in the epicoele
Fixed, the rotor and the stator cooperate, and realize the suspension of the impeller in the axial direction in rotation.It is described by being fixed on
Drainage cone on it is described determine magnet ring, the cooperation with the dynamic magnet ring being fixed on the impeller, so that the impeller is rotating
The suspension of Shi Shixian radially.Cooperate on entrance and exit setting and the drainage cone, the impeller on the shell
Described runner etc. is formed together the circulation path of blood.Herein described heart chamber auxiliary pump structure is simple, small volume, to described
Entrance and the specific location of the outlet are not particularly limited, and can be adapted to according to the installation site of product and use demand
The entrance of all directions and the design of the outlet, have higher compatibility.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the application heart chamber auxiliary pump；
Fig. 2 is the detail view of the application heart chamber auxiliary pump middle magnetic ring；
Fig. 3 is the schematic diagram of one embodiment of the application thrust fluid bearing；
Fig. 4 is the schematic diagram of another embodiment of the application thrust fluid bearing；
Fig. 5 is the schematic diagram of the application impeller shape；
Fig. 6 is the schematic diagram of the application impeller internal details；
Fig. 7 is the schematic diagram of one embodiment of the application impeller channel shape；
Fig. 8 is the schematic diagram of another embodiment of the application impeller channel shape；
Fig. 9 is the schematic diagram of the application impeller channel shape another embodiment；
Figure 10 is the schematic illustration of the application rotor magnetic ring；
Figure 11 is the schematic diagram of the application rotor magnetic ring arrangement.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiment of the application, instead of all the embodiments.Base
Embodiment in the application, those of ordinary skill in the art are obtained all without making creative work
Other embodiments shall fall in the protection scope of this application.
Heart chamber auxiliary pump 100 shown in FIG. 1 is please referred to, including shell 10, drainage bore 20, impeller 30, motor 40, determine magnet ring
51 and dynamic magnet ring 52.The shell 10 includes hollow inner cavity, and entrance 11 and the outlet 12 of the connection inner cavity.The shell
Partition 13 is additionally provided in the inner cavity of body, the inner cavity of the shell 10 is divided into epicoele 14 and cavity of resorption 15 by the partition 13.It is described enter
Mouth 11 is connected to the epicoele 14 with the outlet 12.The drainage cone 20 is set in the epicoele 14, the drainage cone 20
It is connected with the partition 13, and entrance 11 described in 20 faces is bored in the drainage.The impeller 30 is ring-type, and the impeller 30 is arranged
In on drainage cone 20, the impeller 30 is clearance fit with drainage cone 20, the impeller 30 and drainage cone 20
It does not contact.Runner 31 is set in the impeller 30, the runner 31 is connected to cricoid inner ring and the outer of the impeller 30, i.e., described
Runner 31 forms the radial channel of the perforation impeller 30 in the impeller 30.The motor 40 includes stator 41 and rotor
42.Winding is set in the stator 41, the stator 41 is set in the cavity of resorption 15.The partition 13 is by the stator 41 and institute
The sealing of epicoele 14 is stated to separate.The rotor 42 is permanent magnet, and the rotor 42 is fixedly arranged on the impeller 30.It is described to determine magnet ring 51
It is fixedly arranged on the drainage cone 20, the dynamic magnet ring 52 is fixedly arranged on the impeller 30, and the dynamic magnet ring 52 and the rotor
42 coaxial arrangements.The outer diameter of the dynamic magnet ring 52 be less than or equal to the rotor 42 internal diameter, i.e., the impeller 30 radially,
The dynamic magnet ring 52 is located at the inner ring of the impeller 30 compared to the rotor 42.See Fig. 2, it is described to determine magnet ring 51 and the dynamic magnetic
The magnetic pole of ring 52 is axial distribution, i.e., described itself pole N for determining magnet ring 51 and the dynamic magnet ring 52 and S are extremely along respective axis
To distribution.By it is described determine magnet ring 51 for, the pole N for determining magnet ring 51 is located at described one end determined on 51 axial direction of magnet ring, S
Pole is located at the other end determined on 51 axial direction of magnet ring.The direction of the magnetic pole for determining magnet ring 51 and the dynamic magnet ring 52 is
It is identical, so that described determine magnet ring 51 and the opposite state for being in homopolar-repulsion of the dynamic magnet ring 52.The drainage cone 20 and institute
It states impeller 30 and keeps clearance fit therewith.It should be mentioned that in herein described heart chamber auxiliary pump 100, the drainage cone
20, the impeller 30, the stator 41, the rotor 42, it is described determine magnet ring 51 and the dynamic magnet ring 52, with axis 001
For center of circle coaxial arrangement.
When the application heart chamber auxiliary pump 100 works, the motor 50 is powered, and the driving impeller 30 is along the axis
The direction of line 001 is suspended in the epicoele 14.With the curent change of the motor 50, the impeller 30 is in the epicoele 14
Interior rotation.Specifically, the coil in the stator 51 being fixedly arranged in the cavity of resorption 15 is powered, and generate magnetic field.With the leaf
The connected rotor 52 of wheel 30 rotates under the action of the magnetic field around the axis 001.The gravity of the impeller 30 and institute
The axial magnetic that rotor 30 is subject to is stated mutually to balance so that the impeller 30 be suspended on the direction of the axis 001 it is described
In epicoele 14.And the impeller 30 radially, due to the cooperation for determining magnet ring 51 and the dynamic magnet ring 52, the impeller
30 keep clearance fit state namely the impeller 30 diametrically opposed in described with drainage cone 20 always in rotation
Drainage cone 20 is in suspended state.The impeller 30 is axially and radially all in suspended state as a result, not with the shell
Body 10, drainage cone 20 etc. generate any contact, and rotation is kept under the action of motor 40.
The blood for needing to be pressurized flows into the epicoele 14 from the entrance 11, by institute after encountering the drainage cone 20
Drainage cone 20 is stated to disperse and drain into the impeller 30 of rotation.Specifically, blood passes through the runner 31 from the leaf
The inside that the impeller 30 is flowed through at the inner ring of wheel 30, finally flows out the outer of the impeller 30 from the runner 31.Blood exists
It is accelerated, has when from the 12 outflow shell 10 of outlet bigger under the action of the impeller 30 persistently rotated
Speed and pressure realize the function of ventricle auxiliary to achieve the effect that pressurization.Since the suspension of the impeller 30 is arranged, this
Apply for heart chamber auxiliary pump 100 during the work time, internal any two component, being capable of maximum limit all there is no directly contacting
Destruction of the reduction of degree to blood, effectively reduces the generation of thrombus and haemolysis, has the advantages that high reliablity and service life are long, fits
Conjunction is chronically implanted human body.
It should be mentioned that using the partition 13 in the present embodiment, inside the shell 10 to separate on described
Chamber 14 and the cavity of resorption 15.In remaining some embodiment, the separation of the epicoele 14 and the cavity of resorption 15 can not also be used
The partition 13, but the mutually independent epicoele 14 and the combination of the cavity of resorption 15 are set to form the shell 10.At this
It is the top plate of the bottom plate or the cavity of resorption 15 by the epicoele 14 between epicoele 14 and the cavity of resorption 15 described in kind embodiment
It separates.There are also a kind of embodiment, the motors 40, specifically, the shell of the stator 41 is in the inner cavity of the shell 10
The middle separation function for forming the epicoele 14 and the cavity of resorption 15.To point of institute's epicoele 14 and the cavity of resorption 15 in application scheme
Every being not particularly limited, as long as being able to achieve the sealing of the stator 41, guarantee the normal work of the motor 40.
In one embodiment, the shape of the epicoele 14 and the impeller 30 cooperates.Perpendicular to the axis
On 001 direction, the epicoele 14 includes in the first inner wall 141 close to the entrance 11 and second far from the entrance 11
Wall 142.Also include first face 32 opposite with first inner wall 141 on the impeller 30, and with second inner wall 142
The second opposite face 33.The form fit of the shape of first inner wall 141 and first face 32, second inner wall 142
Shape and first face 33 form fit, the shape collective effect being mutually matched at two is to prevent the impeller 30 from turning
Occur biggish turbulent flow during dynamic, and then influences the suspended state of the impeller 30.
Further, the form fit for the shape of first inner wall 141 and first face 32 and described the
The form fit of the shape of two inner walls 142 and first face 33 in one embodiment will in the heart chamber auxiliary pump 100
Wherein at least a pair of of form fit is set as thrust fluid bearing 60.Namely the thrust fluid bearing 60 is set to described first
Between inner wall 141 and first face 32 or the thrust fluid bearing 60 is set to second inner wall 142 and described second
Between face 33.The Hydrodynamic suspension principle of the thrust fluid bearing 60, is shown in Fig. 3, Fig. 4, is that rule are arranged in fluid flow path
Guide groove 61 then, the guide groove 61 are uniformly distributed along the circumference around the center of the thrust fluid bearing 60, using liquid flow in generate
Regular, uniform thrust realizes driven suspension of the impeller 30 in 100 inner cavity of heart chamber auxiliary pump.Another kind description
Mode, the impeller 30 is under the magneticaction of the rotor 42 and the stator 41, then is aided with the thrust fluid bearing 60
Thrust so that the suspended state when impeller 30 overcomes self gravity and realizes rotation in the epicoele 14.Another
Brief description mode is the thrust fluid bearing 60 and 40 collective effect of motor, so that the impeller 30 is turning
Suspended state when dynamic in axial direction.
It should be understood that when the thrust fluid bearing 60 be set to first inner wall 141 and first face 32 it
Between when, the impeller 30 is by the thrust of the thrust fluid bearing 60 and the thrust and self gravity of the motor 40.This
Three power mutually balance on the direction of the axis 001, to realize the suspension of the impeller 30；When the thrust fluid bearing
60 when being set between second inner wall 142 and second face 33, and the impeller 30 is by the thrust fluid bearing 60
Thrust and the motor 40 thrust or pulling force and self gravity.These three power are mutual on the direction of the axis 001
Balance, to realize the suspension of the impeller 30.
It should be mentioned that when the thrust fluid bearing 60 is set to second inner wall 142 and second face 33
Between when, the thrust or pulling force that the motor 40 is shown, depend on 30 self gravity of impeller and the thrust it is hydraulic
The thrust size of bearing 60.When the self gravity of the impeller 30 is greater than the thrust of the thrust fluid bearing 60, the electricity
Machine 40 shows as thrust, and the thrust collective effect of the thrust of the motor 40 and the thrust fluid bearing 60 is described to overcome
The gravity of impeller 30 realizes the suspended state of the impeller 30；When the self gravity of the impeller 30 is hydraulic less than the thrust
When the thrust of bearing 60, the motor 40 shows as pulling force, and the pulling force of the motor 40 and the self gravity of the impeller 30 are total
Same-action, to overcome the thrust of the thrust fluid bearing 60, to realize the suspended state of the impeller 30.
More again, the suspended state of the impeller 30 is not the suspension of constant position.In the rotation process of the impeller 30
In, probably due to the influence of the factors such as the variation of revolving speed or the mutation of moment stress, and generate to the thrust fluid bearing 60
Disturbance.The impeller 30 will deviate on the direction of the axis 001 at this time.When the impeller 30 deviates
When, the thrust fluid bearing 60 and the stator 41 can generate corresponding because changing at a distance from the impeller 30
Thrust variation.When the impeller 30 and the thrust fluid bearing 60 close to when, what the impeller 30 was subject to pushes away from described
The thrust of power fluid bearing 60 will become larger, and the impeller 30 is pushed away the thrust fluid bearing 60, the leaf by the thrust to become larger
Wheel 30, which is able to come back to initial equilbrium position, to be continued to rotate.Likewise, when the impeller 30 to the stator 41 close to when,
The magnetic fields that the impeller 30 is subject to are also bigger, thus in the collective effect of the stator 41 and the thrust fluid bearing 60
Under be pushed back initial equilbrium position to continue to rotate.Vice versa.
In one embodiment, two thrust fluid bearings 60 are set simultaneously in the heart chamber auxiliary pump 100, this
Shi Suoshu thrust fluid bearing 60 is divided into lifting force fluid bearing 62 and lower thrust fluid bearing 63.The lifting force hydraulic axis
62 are held between first inner wall 141 and first face 32, the lower thrust fluid bearing 63 is located in described second
Between wall 142 and second face 33.It is the lifting force fluid bearing 62, described it should be understood that in this embodiment
Lower thrust fluid bearing 63 and 40 collective effect of motor, so that along the axis 001 when the impeller 30 rotates
Suspended state is on direction.
In order to further compress the axial dimension of the heart chamber auxiliary pump 100, the thrust fluid bearing 60 can be with
It is directly arranged on first inner wall 141 and/or second inner wall 142 of the shell 10.I.e. when the thrust is hydraulic
Bearing 60 only one when, the thrust fluid bearing 60 is arranged on its corresponding inner wall, is avoided because setting is individual
The thrust fluid bearing 60 and the waste for causing axial space.It is when the thrust fluid bearing 60 is two, then described to push away
Power fluid bearing 60 is respectively arranged on first inner wall 141 and second inner wall 142.
It should be noted that the shape of the guide groove 61 is respectively screw type and herringbone in the embodiment of Fig. 3, Fig. 4
Type, but in further embodiments, the shape of the guide groove 61 can also be other some embodiments.As long as meeting center pair
Claim distribution, being capable of providing blood flow path with rule, uniform deflecting can be realized scheme described herein.
On the other hand, the guide groove 61 of the thrust fluid bearing 60 both can be set in the side of the impeller 30,
I.e. described first face 32 and/or 33 side of the second face；It is can be set again on the epicoele 14, i.e., described first inner wall
141 and/or 142 side of the second inner wall.Also or, all correspondence is set on two opposite faces of the impeller 30 and the epicoele 14
Set the mutually matched guide groove 61.I.e. first face 32 and on first inner wall 141 and/or second face 33 with
It is both provided with the guide groove 61 cooperated in pairs on second inner wall 142, is pushed away described in the conduct of the guide groove 61 being arranged in pairs
Power fluid bearing 60 in the application heart is worked in auxiliary pump.For the specific setting position of the guide groove 61, the application is not done
It is particularly limited to.
A kind of embodiment, in order to avoid the rotor 42 and the dynamic magnet ring 52 that are set on the impeller 30 are to described
The influence of the rotational action of impeller 30, especially when the rotor 42 protrudes from first face 32 or institute with the dynamic magnet ring 52
When stating the second face 33, the rotor 42 will generate the operation of the thrust fluid bearing 60 with the dynamic magnet ring 52 uncontrollable
Interference generates barrier to the blood flow path of rule to cause turbulent flow.In this regard, on the direction of the axis 001, it will be described
Rotor 42 is disposed as flushing or being contained within the impeller 30 with the dynamic magnet ring 52, so that first face 32 or described
Second face 33 is able to be set as the form of the guide groove 61 of plane or the aforementioned rule being previously mentioned.Another describing mode, described turn
Son 42 on the direction along the axis 001, is contained in the impeller 30 with the dynamic magnet ring 52.
About setting of the rotor 42 in the impeller 30, in order to reduce the power of the motor 40, further contract
The volume of small the application heart chamber auxiliary pump 100, the rotor 42 preferably as close as possible to the stator 41, with shorten the rotor 42 with
The distance between described stator 41 improves electromagnetic induction efficiency.In one embodiment, the rotor 42 is in the impeller 30
On 001 direction of axis, between the runner 31 and second face 33.I.e. relative to the runner 31, described turn
Son 42 is closer to the stator 41.The blood flowed in the runner 31 at this time is in the stator 41 towards the rotor 42
It circulates on extending direction, the electromagnetic induction between the stator 41 and the rotor 42 will not be deadened.
On the other hand, it is the channel (see Fig. 5) be radially connected in the impeller 30 due to the runner 31, is used for blood
Flowing.When then the dynamic magnet ring 52 is in the inner ring in the rotor 42, the dynamic magnet ring 52 is in the side of the axis 001
A part of volume of the impeller 30 can only be occupied upwards, concede space for the feeder connection of the runner 31.It can be seen from the above,
The rotor 42 on 001 direction of the axis of the impeller 30 between the runner 31 and second face 33, if
The dynamic magnet ring 52 is between the runner 31 and first face 32, then the runner 31 is in the direction of the axis 001
On, feeder connection and channel outlet will appear difference in height.The feeder connection and channel outlet of the i.e. described runner 31 be not same
In plane.Such design causes certain change to the circulation path of blood, enters compared to channel in the same plane
For mouth and channel outlet, a part of pressurization energy in the heart chamber auxiliary pump 100 is consumed changing in blood flow path
In change.For this purpose, the dynamic magnet ring 52 is also arranged between the runner 31 and second face 33, i.e., in a kind of embodiment
The flowing for being more advantageous to blood in the same plane can be set in the circulation path of the runner 31 (see Fig. 6).
Shape setting for the runner 31, is shown in Fig. 7 to Fig. 9, and the shape setting of the common runner 31 can be
Linear type, eccentric straight-line type and three kinds of streamline channel.The number of blade of the impeller 30 is generally between 4 to 8.Certainly,
The application does citing example at this, in other embodiments, the concrete shape of the runner 31 or the impeller 30
Blade quantity can also be adjusted freely.
Setting for the rotor 42, in some embodiments, the rotor 42 combine shape by pairs of sector electromagnet
At.The sector electromagnet includes the axial magnet 421 and tangential magnet 422 for being spaced apart from each other setting.It should be understood that the axial direction
Magnet 421 is magnet of the magnetic pole along 001 directional spreding of axis, and the tangential magnet 422 is magnetic pole along the impeller 30
Circumferentially distributed magnet.The axial magnet 421 is to be arranged in pairs with the tangential magnet 422, and the axial magnet 421
It is arranged with the tangential interval of magnet 422, two neighboring 421 magnetic pole of the axial magnet being arranged in pairs is reversed each other, simultaneously
Two neighboring tangential 422 magnetic pole of magnet being arranged in pairs is also reversed each other.Such setting is able to set the rotor 42
It is set to Halbach (Halbach) magnetic array, principle is shown in Figure 10.Increased using axial magnet and longitudinal being staggered for magnet
Magnetic field strength on strong unit direction, in order to generate strongest magnetic field with minimal amount of magnet.Such setting further mentions
The high efficiency of the motor 40, reduces the volume of the application heart chamber auxiliary pump 100.
In the signal of Figure 11, the axial magnet 421 and the tangential magnet 422 are 4 pairs.To described in the application
The particular number of axial magnet 421 and the tangential magnet 422 with no restriction, in other embodiments, the axial magnetic
The quantity of iron 421 and the tangential magnet 422 can be any logarithm.As long as the scheme that can form Halbach magnetic array all belongs to
In the application range claimed.
For the setting of the outlet 12, since the runner 31 in the impeller 30 is radial flow path, by described
The blood that impeller 30 flows out after being pressurized is flowed out from the circumference outer of the impeller 30.It is a kind of in order to obtain preferable supercharging effect
In embodiment, the outlet 12 is set on the side wall directly between first inner wall 141 and second inner wall 142, with
The epicoele 14 can be more smoothly being flowed out after pressurization convenient for blood, avoid being lost because of the mutation of circulation path
Flow velocity or pressure.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (10)
1. a kind of heart chamber auxiliary pump, it is characterised in that:
Including drainage cone, impeller, motor, determine magnet ring and dynamic magnet ring；
The impeller set is set to drainage cone periphery, sets runner in the impeller, the runner forms diameter in the impeller
To access；
It is described to determine magnet ring and the dynamic magnet ring and be distributed along the radial direction of the impeller, it is described to determine magnet ring and be fixedly arranged on the drainage
Cone, the dynamic magnet ring are fixedly arranged on the impeller, described to determine magnet ring and the magnetic pole of the dynamic magnet ring towards identical；
It is described to determine magnet ring and the dynamic magnet ring cooperation so that the impeller is opposite when the wheel rotation described in the motor driven
The drainage cone is in suspended state radially.
2. heart chamber auxiliary pump as described in claim 1, it is characterised in that:
The heart chamber auxiliary pump includes hollow shell, and partition is set in the shell, and the partition divides the inner cavity of the shell
For epicoele and cavity of resorption, the epicoele sets the entrance and exit for being connected to the hull outside；
The motor includes stator and rotor, and the drainage cone and the impeller are located at the epicoele, and the stator is fixedly arranged on institute
State cavity of resorption；
When the wheel rotation described in the motor driven, the stator controls the rotor through the partition and drives the leaf
Wheel rotation, the stator and the rotor engagement are so that the relatively described drainage cone of the impeller is in suspension radially
State.
3. heart chamber auxiliary pump as claimed in claim 2, it is characterised in that:
On the axis direction perpendicular to the impeller, the epicoele includes close to the first inner wall of the entrance and far from described
Second inner wall of entrance；The impeller includes first face opposite with first inner wall, and opposite with second inner wall
The second face；
The heart chamber auxiliary pump further includes a thrust fluid bearing, the thrust fluid bearing be set to first inner wall with
Between first face or the thrust fluid bearing is set between second inner wall and second face；
The thrust fluid bearing and the motor collective effect, so that being in suspension when the wheel rotation in the axial direction
State.
4. heart chamber auxiliary pump as claimed in claim 3, it is characterised in that: the thrust fluid bearing is two, is divided into lifting force
Fluid bearing and lower thrust fluid bearing, the lifting force fluid bearing is between first inner wall and first face；
The lower thrust fluid bearing between second inner wall and second face, the lifting force fluid bearing, it is described under
Thrust fluid bearing and the motor collective effect, so that being in suspended state when the wheel rotation in the axial direction.
5. heart chamber auxiliary pump as claimed in claim 4, it is characterised in that: the thrust fluid bearing is set to the institute of the shell
It states on the first inner wall and/or second inner wall.
6. the heart chamber auxiliary pump as described in any one of claim 2~5, it is characterised in that: on the axis direction of the impeller, institute
It states rotor and the dynamic magnet ring is contained in the impeller.
7. heart chamber auxiliary pump as claimed in claim 3, it is characterised in that: on the axis direction of the impeller, the rotor position
Between the runner and second face.
8. heart chamber auxiliary pump as claimed in claim 7, it is characterised in that: on the axis direction of the impeller, the dynamic magnet ring
It also is located between the runner and second face.
9. heart chamber auxiliary pump as claimed in claim 2, it is characterised in that: the rotor includes the axial magnet for being spaced apart from each other setting
With tangential magnet, the axial magnet and the tangential magnet are sector, and the axial magnet is at least arranged two, two institutes
The magnetic pole for stating axial magnet is reversed each other.
10. heart chamber auxiliary pump as claimed in claim 3, it is characterised in that: the outlet is set to first inner wall and described the
On side wall between two inner walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820047665.1U CN209033311U (en) | 2018-01-11 | 2018-01-11 | Heart chamber auxiliary pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820047665.1U CN209033311U (en) | 2018-01-11 | 2018-01-11 | Heart chamber auxiliary pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209033311U true CN209033311U (en) | 2019-06-28 |
Family
ID=67027565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820047665.1U Active CN209033311U (en) | 2018-01-11 | 2018-01-11 | Heart chamber auxiliary pump |
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| CN (1) | CN209033311U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175884A (en) * | 2018-01-11 | 2018-06-19 | 深圳核心医疗器械有限公司 | Heart chamber auxiliary pump |
| CN112156255A (en) * | 2020-10-14 | 2021-01-01 | 北京航空航天大学 | Magnetic suspension centrifugal blood pump with integrated extracorporeal circulation magnetic wheel |
| CN114042241A (en) * | 2021-11-16 | 2022-02-15 | 深圳核心医疗科技有限公司 | Magnetic suspension pump |
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2018
- 2018-01-11 CN CN201820047665.1U patent/CN209033311U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175884A (en) * | 2018-01-11 | 2018-06-19 | 深圳核心医疗器械有限公司 | Heart chamber auxiliary pump |
| CN112156255A (en) * | 2020-10-14 | 2021-01-01 | 北京航空航天大学 | Magnetic suspension centrifugal blood pump with integrated extracorporeal circulation magnetic wheel |
| CN112156255B (en) * | 2020-10-14 | 2022-07-26 | 北京航空航天大学 | Magnetic suspension centrifugal blood pump with integrated extracorporeal circulation magnetic wheel |
| CN114042241A (en) * | 2021-11-16 | 2022-02-15 | 深圳核心医疗科技有限公司 | Magnetic suspension pump |
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Address after: 518000 factory building a qiugu 202, fengyeyuan industrial plant, Liuxian Er Road, Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN CORE MEDICAL TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong Shenzhen City, Shenzhen Nanshan District Taoyuan Street Li Shan Road University City Pioneer Park 1106 room Patentee before: SHENZHEN HEXIN MEDICAL DEVICES Co.,Ltd. |
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Address after: 518000 1601, building D3, Nanshan Zhiyuan, No. 1001, Xueyuan Avenue, Changyuan community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Patentee after: Shenzhen Core Medical Technology Co.,Ltd. Address before: 518000 qiugu 202, workshop a, fengyeyuan industrial plant, Liuxian 2nd Road, Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN CORE MEDICAL TECHNOLOGY Co.,Ltd. |