CN207708246U - Microminiature micro-centrifugal blood pump with self-regulation blade - Google Patents
Microminiature micro-centrifugal blood pump with self-regulation blade Download PDFInfo
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- CN207708246U CN207708246U CN201720485269.2U CN201720485269U CN207708246U CN 207708246 U CN207708246 U CN 207708246U CN 201720485269 U CN201720485269 U CN 201720485269U CN 207708246 U CN207708246 U CN 207708246U
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- 239000008280 blood Substances 0.000 title claims abstract description 43
- 210000004369 blood Anatomy 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 9
- 238000010008 shearing Methods 0.000 description 3
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- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 206010027514 Metrorrhagia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses the microminiature micro-centrifugal blood pumps with self-regulation blade.The prior art can not control boundary layer thickness, Secondary Flow and the eddy current crack in microminiature centrifugal blood pump very well.Every level-one blade suction surface of the utility model one stage impeller is equipped with winglet；Every two grade blades are fixed with a piece of oscillating vane by cylindrical bar, and cylindrical bar constitutes revolute pair with drive end bearing bracket；Arc-shaped rack is equipped on the inside of active annulus, the gear of control cabinet output end is engaged with arc-shaped rack；The hinged end of each connecting rod and active annulus is uniformly distributed along the circumferential direction of active annulus；Cut-point is set on the molded line of each oscillating vane, the hinged end as the piece oscillating vane and respective link；Cut-point is at the trailing edge of oscillating vane on the molded line of oscillating vane at the bigger position of spiral case sectional area.Two grade blades of the utility model have the different angles of attack, solve on different spiral case sections the flow parameters such as friction speed of the blood demand to adjustable vane established angle under different conditions.
Description
Technical field
The utility model belongs to fluid transport field, and blade, low noise can be automatically adjusted, to the low damage of haemocyte by being related to one kind
Bad microminiature micro-centrifugal blood pump, more particularly to it is a kind of according to control cabinet and push and pull system automatic adjustment blade and impeller blade
Suction surface has the microminiature micro-centrifugal blood pump of small wing structure.
Background technology
Pump be it is a kind of being widely used general universal machine, play huge effect in the production, life of the mankind, no
It is constantly manufactured also with new application needs with the pump of type and various sizes and applied among industry-by-industry.According to
Pump can be generally divided into following a few classes by the difference of characteristic dimension：Conventional pumps, microminiature pump and micropump.Wherein microminiature
Characteristic dimension range substantially 1~50mm of pump, and the characteristic length of micropump and conventional pumps be respectively 1mm or less and 50mm with
On.
Microminiature pump such as micro motor and includes meter because its special size range shows its good application prospect
The cooling system of electronic equipment including calculation machine CPU, pipeline pump, the temperature control system of fuel cell and now most widely used
General Medical Devices etc..
In view of blood has the characteristic that haemocyte is easily rupturable in larger viscosity and blood transportation, how to design flowing and cut
The microminiature centrifugal pump that shear force is low, internal flow is stablized is most important.But in addition to conveying liquid particularity other than, microminiature from
Extremely complex property is flowed in heart pump, is mainly reflected in：1) flowing is three-dimensionality；2) viscosity of fluid；3) non-stationarity flowed.
Because transporting blood in viscosity and the particularity for transporting requirement, it is to meet Ku Ta-to eat that viscosity, which not only influences exit edge of blade,
Koffsky condition and the blade wake passing vortex formed.Due to viscosity, blade surface and ring wall channel surface can be in the presence of viscous
Property boundary layer, have strong interaction between them and between mainstream, generate " Secondary Flow " phenomenon.Secondary flow is micro-
The main contributor that small-size centrifugal pump loss rising, efficiency decline.Meanwhile Secondary Flow and vortex bursting are generation noises in centrifugal pump
Main source.
Meanwhile heart is to convey blood by diastole and contraction, output is pulsating flow (flow, pressure pulsation).
If rotary blood pump simulation human body naive hearts is allowed to export pulsating flow (flow, pressure pulsation), contribute to human body after openheart surgery
Recovery.But since rotation metrorrhagia is periodical variable speed, the flow parameter (flow, pressure etc.) of blood is at any time in the period
Variation, resulting in the speed inside blood pump, pressure, shearing force all moment occurs variation, the flow regime of moment variation
And the particularity (haemocyte is broken, blood sticky big) of blood exacerbate whirlpool formation and shearing force to the damage of haemocyte
It is bad.The setting angle of traditional fixed blade is fixed, and for variable speed centrifugal pump, fluid flows principal direction caused by rotation speed change
Variation and the variations of parameters cannot cope in time, the Optimum Leaves setting angle needed for preferable flowing cannot be provided,
Higher efficiency cannot be all consistently achieved in the case of any rotating speed, can also cause the generation of vortex, aggravate eddy current crack.Together
When, for the continually changing spiral case of area of section, the parameters such as flowing velocity are different on different sections, are required at this time different
Attack angle of blade can be more suitable, this requires the adjustable vane differences of variable speed pump to need having different leaves according to different
Piece, which becomes, has different angle variable rates.
In conclusion for variable speed micro-centrifugal blood pump, go out efficient one kind, low noise, to haemocyte to design optimization
The microminiature micro-centrifugal blood pump of low damage seeks to control and reduce secondary flow, prevent vortex shedding or control the formation in whirlpool,
And find the automatic adjustable of corresponding Optimum Leaves setting angle with the parameter that can be directed to various change in variable speed movement
The blade of section.
Invention content
The purpose of this utility model is the boundary layer that can not be controlled very well for the prior art in microminiature centrifugal blood pump
Thickness, Secondary Flow and eddy current crack, provide the case where can not obtaining adjustable vane established angle blade for variable speed centrifugal pump
It is band automatic adjustment installation that the micro centrifugal pump of two grade blades, specifically level-one blade suction surface, which have small wing structure, sencond stage impeller,
The microminiature micro-centrifugal blood pump of angle blade.
The utility model includes drive end bearing bracket, rear end cap, one stage impeller and two level adjustable vane impeller；The drive end bearing bracket,
Rear end cap, one stage impeller and two level adjustable vane impeller are coaxially disposed.Every level-one blade suction surface of one stage impeller is in height
It spends and is equipped with winglet at the center in direction, the trailing edge of winglet is concordant with the trailing edge of one stage impeller；The short transverse of winglet and level-one leaf
The short transverse of piece is vertically arranged；The molded line length of the winglet is the 10%~15% of level-one vane type line length, and each one
The molded line equal length of winglet on grade blade；Winglet cross section is the isosceles triangle of three equal rounded corners in angle, and radius of corner is
The 0.1~0.2 of isosceles triangle height；The angle that isosceles triangle is located at edge is minimum angles, and minimum angles are 30 °；It is small
Nose of wing has 30 ° of inclination angles with respect to winglet short transverse；Level-one vane thickness is the 0.3~0.4 of winglet trailing edge height.
The two level adjustable vane impeller includes active annulus, connecting rod, oscillating vane, cylindrical bar, two grade blades and control
Case processed.Z1Two grade blade of piece along two level adjustable vane impeller circumferentially, Z1It is the one of one stage impeller that=n*Z, n, which take 1,2 or 3, Z,
Grade blade number.Every two grade blades are fixedly connected with a piece of oscillating vane by cylindrical bar, and cylindrical bar axial line is located at two level
On the centering face of blade and oscillating vane；Cylindrical bar constitutes revolute pair with the circular hole that drive end bearing bracket opens up, and oscillating vane is located at front end
Lid is external, and two grade blades are located inside drive end bearing bracket.One end of every oscillating vane and a connecting rod is hinged, all connecting rods it is another
End is hinged with annulus part；Arc-shaped rack is equipped on the inside of active annulus, gear and the arc-shaped rack of control cabinet output end are nibbled
It closes；The corresponding central angle of arc-shaped rack is 30 °~60 °.The cylindrical bar is equipped with labyrinth-like sealing structure.
The hinged end of each connecting rod and active annulus is uniformly distributed along the circumferential direction of active annulus；Volute tongue is most on annulus part center and spiral case
The line of salient point is zero degree line, and the direction that spiral case sectional area gradually increases is the increased positive direction of angle；Spiral case by drive end bearing bracket and
Rear end cap forms；Cylindrical bar avoids -15 ° of zero degree line~25 ° angular displacement, with zero degree line it is at 45 ° be first cylindrical bar position
It sets, remaining cylindrical bar is circumferentially evenly distributed with after avoiding -15 ° of zero degree line~45 ° along two level adjustable vane impeller.In each oscillating vane
Cut-point is set on molded line, the hinged end as the piece oscillating vane and respective link.Pendulum at the bigger position of spiral case sectional area
Cut-point is at the trailing edge of oscillating vane on the molded line of movable vane piece.
Gasket is equipped between the drive end bearing bracket and rear end cap, and drive end bearing bracket and rear end cap are bolted.
Cavity between the drive end bearing bracket and one stage impeller end face is pumping chamber, and pumping chamber is the input end of blood.
The internal diameter of the active annulus is 1.2 times of drive end bearing bracket inlet radius.
The center of rotation of the one stage impeller meets following formula with cylindrical bar central axis distance L：
L-R1-0.5*L2=0.05R1；
In formula, L2For the molded line length of two grade blades, R1For one stage impeller radius.
The labyrinth-like sealing structure includes two annular groove groups；Annular groove group by equidistant placement 6~8 annular grooves
Composition, the groove width of annular groove are equal with adjacent annular separation.
The defeated speed functions for thering is gear of output end variable speed to rotate of the control cabinet.
The beneficial effects of the utility model：
The utility model, can be very by being provided with the small wing structure of isosceles triangle at level-one fixed blade impeller outlet end
Radial Flow caused by pressure and centrifugal force imbalance of the good control due to fluid, while big Passage Vortex can also be cut
Cut combing, the viscous fluid in runner be effectively separated and be oriented to so that flowing become ideal flow state, reduce from
The Trailing Edge Loss and eddy current crack of heart pump.The size for controlling a pair of channels whirlpool in blade passage, has also just controlled radial motion
Secondary Flow, reduce the uneven of speed, reduce jet stream Trailing Edge Loss, it is suppressed that the vortices breakdown and flow loss of leaf road tail end are simultaneously
Control vortex shedding.
Two level adjustable vane impeller, for speed, pressure etc. caused by the variable speed during centrifugal blood pump operation
Cyclically-varying, suitable attack angle of blade can be selected according to the variation of incoming blood, weaken " penetrating for one stage impeller outlet
Stream-tail " weakens the big vortex that outlet end occurs, and blood is shunted and combed again, and big vortex is combed into
Small whirlpool improves the internal flow situation of blood pump.Two level adjustable guide blade is similar to vane diffuser for entire blood pump, will
The kinetic energy of fluid is converted into useful pressure energy, further promotes the lift of blood pump, thus can be appropriate under identical lift
Reduction centrifugal pump rotating speed, thereby reduce the centrifugal force that blood receives, reduce the centrifugal force that haemocyte is subject in blood.
Control cabinet shifts to an earlier date the speed functions of input/output terminal gear variable speed rotation, according to the variation of function to exporting end tooth
Wheel is controlled, and ensure that initial angular momentum of the adjustable vane on active annulus is consistent, different length of connecting rods makes
The change rate of the adjustable vane of different circumferential positions is different, and further causing different adjustable vanes has no leaf
Piece amount of spin obtains different attack angle of blade, solves on different spiral case sections the flow parameters such as friction speed of blood not
To the demand of the established angle of adjustable vane under conditions of.The adjustable vane for meeting different circumferential positions is right under different rotating speeds
The different demands of adjustable vane established angle just reduce the friction loss of blood, while having to the viscous fluid in runner
Effect separation is oriented to, and causes to become ideal flow state, reduces the noise that vortex shedding and turbo-charger set are formed.Meanwhile reduce from
The vortex intensity of heart pump simultaneously further reduced dynamic pressure, improve static pressure, to obtain higher efficiency.
Description of the drawings
Fig. 1 is the structural perspective of the utility model；
Fig. 2 is the one stage impeller structure chart of the utility model；
Fig. 3 is the level-one blade construction figure of the utility model；
Fig. 4 is the sealing means schematic diagram of the cylindrical bar and drive end bearing bracket of the utility model；
Fig. 5 is the A-A enlarged drawings of Fig. 4；
Fig. 6 is the stereogram of two level adjustable vane impeller in the utility model；
Fig. 7 is the two-dimensional representation of two level adjustable vane impeller in the utility model；
Fig. 8 is the hinged end position distribution schematic diagram of each oscillating vane of the utility model and corresponding oscillating vane.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the microminiature micro-centrifugal blood pump with self-regulation blade, including drive end bearing bracket 1, rear end cap 2, level-one leaf
Wheel 3 and two level adjustable vane impeller 5；Gasket 4 is equipped between drive end bearing bracket 1 and rear end cap 2, and drive end bearing bracket 1 and rear end cap 2 pass through spiral shell
It tethers and connects；Drive end bearing bracket 1, rear end cap 2, one stage impeller 3 and two level adjustable vane impeller 5 are coaxially disposed.Drive end bearing bracket 1 and level-one leaf
The cavity taken turns between 3 end faces is pumping chamber, and pumping chamber is the input end of blood；The level-one lobe numbers Z=5 of one stage impeller 3.
As shown in Figures 2 and 3, every level-one blade suction surface of one stage impeller 3 is equipped with winglet at the center of short transverse
The trailing edge of 3-1, winglet are concordant with the trailing edge of one stage impeller 3；The short transverse of winglet is vertical with the short transverse of a grade blade to be set
It sets；The molded line length of winglet 3-1 be level-one vane type line length 10%~15%, and on each grade blade winglet molded line it is long
It spends equal；Winglet cross section be three equal rounded corners in angle isosceles triangle, radius of corner be isosceles triangle height 0.1~
0.2；The angle that isosceles triangle is located at edge is minimum angles, and minimum angles are 30 °；The small relatively small wing height of nose of wing has
30 ° of inclination angle δ；Level-one vane thickness b2 is the 0.3~0.4 of winglet trailing edge height b1.To there are the leaves of larger flow instability
The exit of wheel runner adds small wing structure, can improve the flow condition at impeller, and the vortex structure in the exits Ye Dao is inhibited to generate,
" jet-wake " phenomenon for inhibiting the outlet of leaf road, reduces eddy current crack caused by blade wake passing.
As shown in Fig. 1,4,6 and 7, two level adjustable vane impeller 5 includes active annulus 9, connecting rod 8, oscillating vane 7, cylinder
Bar 6, two grade blades 10 and control cabinet 11.Z1Two grade blade of piece along two level adjustable vane impeller 5 circumferentially, Z1=n*Z, n take 1,
2 or 3, n=1 is taken in the present embodiment.Every two grade blades are fixedly connected with a piece of oscillating vane by cylindrical bar, cylindrical bar axis
Heart line is located on the centering face of two grade blades and oscillating vane；Cylindrical bar constitutes revolute pair with the circular hole that drive end bearing bracket 1 opens up, and swings
Blade is located at outside drive end bearing bracket 1, and two grade blades are located inside drive end bearing bracket 1.One end of every oscillating vane and a connecting rod is hinged,
The other end of all connecting rods is hinged with annulus part；Active internal radius is 1.2 times of 1 inlet radius of drive end bearing bracket.Active annulus
Inside is equipped with arc-shaped rack 9-1, and the gear 11-1 of control cabinet output end is engaged with arc-shaped rack；Arc-shaped rack is corresponding
Central angle θ is 30 °~60 °, and 30 ° are taken in the present embodiment.The limitation that central angle is corresponded to arc-shaped rack, to limit two level leaf
The extreme position of piece.Because the angle of attack is adjusted in two grade blades, the present embodiment is by ensureing one stage impeller center of rotation and cylindrical bar
The distance L of central axis meet following formula ensure two grade blades and a grade blade close to but do not contact：
L-R1-0.5*L2=0.05R1；
In formula, L2For the molded line length of two grade blades, R1For one stage impeller radius.
As shown in figure 5, cylindrical bar is equipped with labyrinth-like sealing structure, it ensure that sticky blood will not leak.Labyrinth-like
Sealing structure includes two annular groove groups；Annular groove group is made of 6~8 annular grooves of equidistant placement, the groove width of annular groove with
Adjacent annular separation is equal.
As shown in figure 8, each connecting rod 8 and the hinged end 8-1 of active annulus are uniformly distributed along the circumferential direction of active annulus.Each connecting rod 8 with
Spiral case (2 groups of drive end bearing bracket 1 and rear end cap are corresponded at the hinged end positions 8-2 and every cylindrical bar position of corresponding a piece of oscillating vane 7
At spiral case) sectional area size is related, and each connecting rod 8 and the hinged end positions 8-2 of corresponding a piece of oscillating vane 7 are specific as follows：
1) it using the line of volute tongue most salient point on annulus part center and spiral case as zero degree line, and is gradually increased with spiral case sectional area
Direction as the increased positive direction of angle.Because volute tongue nearby -10 °~20 ° flowing instabilities, avoid -15 ° of zero degree line~
25 ° of angular displacement cylindrical bars.Cylindrical bar number is Z in the present embodiment1=5, the position that 45 ° are first cylindrical bar is taken, remaining
Cylindrical bar is circumferentially evenly distributed with after avoiding -15 ° of zero degree line~45 ° along two level adjustable vane impeller 5.
2) area on the basis of maximum sectional area is taken in the sectional area of excessively each cylindrical bar central axis of spiral case, this reality is calculated to obtain
Apply excessively each cylindrical bar central axis of spiral case in example sectional area and reference area sectional area than be respectively 61%, 82%, 84%,
86% and 100%.
3) along the leading edge of oscillating vane to trailing edge direction, position cylindrical bar pair is pressed on the molded line of each oscillating vane
The sectional area answered is than setting cut-point, and as the hinged end 8-2 of the piece oscillating vane 7 and respective link 8, i.e. spiral case sectional area is got over
Cut-point is at the trailing edge of oscillating vane on the molded line of oscillating vane at big position.
The speed functions that gear of output end variable speed rotates are input to control cabinet by the utility model, according to the variation of function
Gear of output end is controlled, ensure that initial angular momentum of the adjustable vane on active annulus is consistent, different companies
Pole length makes the change rate of the adjustable vane of different circumferential positions be different, and further causes different adjustable vane tools
There is no blade amount of spin, obtain different attack angle of blade, solves sencond stage impeller blade because of different spiral case sectional areas
Caused by problem different in flow rate, i.e., the rotational angle of the different each blades of spiral case cross sectional flow rate is not had to.
Meanwhile two grade blade can play the role of water conservancy diversion to the preceding pump chamber of the pump housing and rear pump chamber, for variable speed flow
Caused by ante-chamber and back cavity flowing unstable carry out guide functions, have a guide functions of blade, the preceding pump chamber of centrifugal pump and
The fluid in pump chamber can there are one water conservancy diversion directions in advance afterwards, are combed to viscous fluid, improve the flowing of front and back pump chamber
Situation.
The impeller that sencond stage impeller is adjustable established angle blade, continually changing speed when being moved to centrifugal pump variable speed are provided
Degree, pressure, shearing force change the established angle of two grade blades in a certain range in time so that the blood flowed out from level-one blade
Potential energy is converted kinetic energy under the water conservancy diversion of two grade blades so that centrifugal pump all consistently achieves in the case of any rotating speed most to be had
The efficiency of profit, meanwhile, two grade blades of aerofoil section can also inhibit the generation of vortex, improve flow condition, weaken vortex and make an uproar
Sound.
Claims (7)
1. the microminiature micro-centrifugal blood pump with self-regulation blade, including drive end bearing bracket, rear end cap, one stage impeller and the adjustable leaf of two level
Piece impeller, it is characterised in that：Drive end bearing bracket, rear end cap, one stage impeller and the two level adjustable vane impeller is coaxially disposed；One
Every level-one blade suction surface of grade impeller is equipped with winglet, the trailing edge of winglet and the tail of one stage impeller at the center of short transverse
Edge is concordant；The short transverse of winglet and the short transverse of a grade blade are vertically arranged；The molded line length of the winglet is level-one leaf
The 10%~15% of piece molded line length, and on each grade blade winglet molded line equal length；Winglet cross section is that three angles are equal
The isosceles triangle of rounded corner, radius of corner are the 0.1~0.2 of isosceles triangle height；Isosceles triangle is located at edge
Angle is minimum angles, and minimum angles are 30 °；The small relatively small wing short transverse of nose of wing has 30 ° of inclination angles；Level-one vane thickness is small
The 0.3~0.4 of wing trailing edge height；
The two level adjustable vane impeller includes active annulus, connecting rod, oscillating vane, cylindrical bar, two grade blades and control cabinet；
Z1Two grade blade of piece along two level adjustable vane impeller circumferentially, Z1It is a grade blade of one stage impeller that=n*Z, n, which take 1,2 or 3, Z,
Number；Every two grade blades are fixedly connected with a piece of oscillating vane by cylindrical bar, cylindrical bar axial line be located at two grade blades and
On the centering face of oscillating vane；Cylindrical bar constitutes revolute pair with the circular hole that drive end bearing bracket opens up, and oscillating vane is located at outside drive end bearing bracket,
Two grade blades are located inside drive end bearing bracket；One end of every oscillating vane and a connecting rod is hinged, the other ends of all connecting rods with
Annulus part is hinged；Arc-shaped rack is equipped on the inside of active annulus, the gear of control cabinet output end is engaged with arc-shaped rack；Circular arc
The corresponding central angle of shape rack is 30 °~60 °；The cylindrical bar is equipped with labyrinth-like sealing structure；
The hinged end of each connecting rod and active annulus is uniformly distributed along the circumferential direction of active annulus；Volute tongue most salient point on annulus part center and spiral case
Line be zero degree line, the direction that spiral case sectional area gradually increases be the increased positive direction of angle；Spiral case is by drive end bearing bracket and rear end
Lid composition；Cylindrical bar avoids -15 ° of zero degree line~25 ° angular displacement, with zero degree line it is at 45 ° be first cylindrical bar position,
Remaining cylindrical bar is circumferentially evenly distributed with after avoiding -15 ° of zero degree line~45 ° along two level adjustable vane impeller；In the molded line of each oscillating vane
Upper setting cut-point, the hinged end as the piece oscillating vane and respective link；Swing leaf at the bigger position of spiral case sectional area
Cut-point is at the trailing edge of oscillating vane on the molded line of piece.
2. the microminiature micro-centrifugal blood pump with self-regulation blade according to claim 1, it is characterised in that：Before described
Gasket is equipped between end cap and rear end cap, and drive end bearing bracket and rear end cap are bolted.
3. the microminiature micro-centrifugal blood pump with self-regulation blade according to claim 1, it is characterised in that：Before described
Cavity between end cap and one stage impeller end face is pumping chamber, and pumping chamber is the input end of blood.
4. the microminiature micro-centrifugal blood pump with self-regulation blade according to claim 1, it is characterised in that：The active
The internal diameter of annulus is 1.2 times of drive end bearing bracket inlet radius.
5. the microminiature micro-centrifugal blood pump with self-regulation blade according to claim 1, it is characterised in that：The level-one
The center of rotation of impeller meets following formula with cylindrical bar central axis distance L：
L-R1-0.5*L2=0.05R1；
In formula, L2For the molded line length of two grade blades, R1For one stage impeller radius.
6. the microminiature micro-centrifugal blood pump with self-regulation blade according to claim 1, it is characterised in that：The fan
Palace shape sealing structure includes two annular groove groups；Annular groove group is made of 6~8 annular grooves of equidistant placement, the slot of annular groove
It is wide equal with adjacent annular separation.
7. the microminiature micro-centrifugal blood pump with self-regulation blade according to claim 1, it is characterised in that：The control
The defeated speed functions for thering is gear of output end variable speed to rotate of case processed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485269.2U CN207708246U (en) | 2017-05-04 | 2017-05-04 | Microminiature micro-centrifugal blood pump with self-regulation blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485269.2U CN207708246U (en) | 2017-05-04 | 2017-05-04 | Microminiature micro-centrifugal blood pump with self-regulation blade |
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ID=63062509
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|---|---|---|---|
| CN201720485269.2U Expired - Fee Related CN207708246U (en) | 2017-05-04 | 2017-05-04 | Microminiature micro-centrifugal blood pump with self-regulation blade |
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| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
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| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US12076545B2 (en) | 2021-12-15 | 2024-09-03 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
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2017
- 2017-05-04 CN CN201720485269.2U patent/CN207708246U/en not_active Expired - Fee Related
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| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11229784B2 (en) | 2018-02-01 | 2022-01-25 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| US12076545B2 (en) | 2021-12-15 | 2024-09-03 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
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