CN206443963U - Flexible transmission system, percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system - Google Patents
Flexible transmission system, percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system Download PDFInfo
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- CN206443963U CN206443963U CN201621106663.2U CN201621106663U CN206443963U CN 206443963 U CN206443963 U CN 206443963U CN 201621106663 U CN201621106663 U CN 201621106663U CN 206443963 U CN206443963 U CN 206443963U
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Abstract
The utility model discloses a kind of flexible transmission system, percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system, the flexible transmission system includes the flexible drive shaft and the sheath on the outside of the flexible drive shaft positioned at internal layer, perfusion liquid is filled between the flexible drive shaft and sheath, the flexible drive shaft is the braiding hank knotting being at least knitted to form by 2 strands of wires, and the sheath is made up of hollow metallic coil, macromolecule tubing or composite pipe.The two ends of the flexible transmission system are connected with external motor and pump blood impeller respectively.When motor rotates at a high speed, the vibration of transmission system is small, makes patient more comfortable safe when using.
Description
Technical field
The utility model belongs to medical instruments field, more particularly to a kind of flexible transmission system, percutaneously aids in blood pumping device
And Intravascular Thrombus suction system.
Background technology
Heart is the power resources for maintaining the effective blood circulation of whole body and oxygen conveying, in the event of acute myocardial infarction (AMI), the heart
Cardiac function declines caused by the reason such as force failure (HF) and cardiogenic shock (CS), it is impossible to meet the demand of tissue metabolism, will
The life of entail dangers to patient.To the treatment method of these patients, two sides of causal treatment and supportive treatment are generally can be divided into
Face, but causal treatment and circulatory support are closely related over the course for the treatment of.In general, etiological analysis needs the time,
Respond well to treatment and be also required to the time, but recovery of the circulatory support to haemodynamics often gets instant result, it is important to it can be controlled for the cause of disease
Treatment gains time.Therefore, people always search for going partly or entirely to substitute cardiac function using the method for machinery, obtain heart
To rest and reduce oxygen consumption, improve myocardial blood supply, promote heart to recover.
Come over the past several decades, developed many servicing units for being used to replace cardiac pumping and (be referred to as " blood in this part
Pump ").The blood pump of early stage is all using the membrane pump with bio-imitability, but due to volume reason, and Clinical practice wound is big, complication
Many, operation prognosis is not good.The appearance of 1980s continuous stream blood pump, make it possible blood pump volume reduce, the nineties with
Come, updated through Srgery grafting left ventricular assist device (Left ventricular assistant device, LVAD),
It is improved, for severe and drug refractory patients with heart failure, is planted through surgery in validity, security and in terms of reducing complication
Enter ventricular assist device, in the American-European useful supplement for having become heart transplant operation.
But, surgical operation implantation ventricular assist device implantation and withdraw from it is extremely complex, it is quick steady when being applied to
Determine the scene of haemodynamics, or cardiac function is theoretically to recover, and needs conveniently to withdraw from after completing interim circulatory support
Scene, should be surgically implanted ventricular assist device will be restricted.It is therefore desirable to which left ventricular assist device is percutaneous
Insertion.
US5,911,685 patents disclose the motor-driven left ventricle that is percutaneously implantable in vivo and aid in product technology, for the heart
The fast and stable of source property shock patients haemodynamics.
The presence of internal motor adds the length of internal rigid body, and another aspect motor causes blood temperature when rotating at a high speed
The risk risen, motor is likely to result in the shock episodes of harm heart in the event of leaking electricity.
When LVAD motor is located at external, due to vessel anatomy, motor and pump blood part-impeller
It can not typically be connected by stiff shaft, the general of the product uses process to be femoral artery puncture, by abdominal aorta, chest actively
Arteries and veins and the arch of aorta enter left ventricle, and to meet the requirement for puncturing implantation, the external diameter of pump blood part is within 14F, in this diameter
Under, to realize 2.5L/min flow, wheel speed should be at more than 10,000 turns per minute, more extreme situation, rotating speed may be
More than 50,000 turns per minute.The major function of flexible drive shaft is that the moment of torsion of motor is passed into rotary work mechanism, such as pump blood leaf
Wheel etc..In the process, flexible drive shaft bears certain shearing force, if the actual shearing intensity that flexible drive shaft is born is big
In the ultimate shear shearing stress of material, flexible drive shaft will be broken.
Flexible transmission system described in the utility model is located between external motor and impeller.The major diameter of flexible transmission system it
Than more than 160 times.Flexible transmission system described in the utility model is made up of flexible drive shaft and sheath, and flexible drive shaft is located at
Internal layer, sheath is located on the outside of flexible drive shaft, and sheath is at least made up of one layer of hollow sheath, and sheath can be extruded continuously
Macromolecule tubing, or wire or the hollow tubular thing composition of macromolecular fibre braiding, or be combined by above-mentioned material
Form.
When flexible drive shaft rotates at a high speed in sheath, flexible transmission system easily produces violent vibration.Produce vibration
The reason for：Friction when being on the one hand flexible drive shaft rotation between sheath, is on the other hand the flexible system of flexible drive shaft
It is several very high, when rotated, very big swing will be produced, and be tapped when flexible drive shaft is swung or hit sheath, and make to include determining
Transmission system including son produces the vibration of certain amplitude and frequency.
The presence of liquid is irrigated, the friction of flexible drive shaft and sheath can be effectively reduced, to reduce what is come due to friction belt
Vibration and noise, but can not solve to hit the vibration that sheath is produced when flexible drive shaft is swung.The amplitude of transmission system is for a long time
During beyond certain limit, patient will be difficult to receive, in some instances it may even be possible to cause in aorta vessel patch to come off, the bad thing such as interlayer
Part.
Patent CN105682602 discloses a kind of design of soft drive, using being proximally and distally locally filled with hardening
Empty helix tube is drive shaft, reduces its oscillating load.The technical scheme realize it is extremely complex, especially be locally filled with hardening
In the case of scheme, the external diameter of drive shaft also inevitably increases.
Therefore, it is necessary to provide a kind of new soft drive axle construction, in the case where not needing differential hardening, it can meet
For a long time, high rotating speed, the operation demand of big torque.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of flexible transmission system, percutaneous auxiliary blood pumping device and
Intravascular Thrombus suction system, while can transmitting moment of torsion safely, Oscillation Amplitude during reduction transmission system rotation makes patient
It is more comfortable when using.
The utility model is to provide a kind of flexible transmission system to solve the technical scheme that above-mentioned technical problem is used, and wraps
The flexible drive shaft and the sheath on the outside of the flexible drive shaft positioned at internal layer are included, between the flexible drive shaft and sheath
Filled with perfusion liquid, the flexible drive shaft is the braiding hank knotting being at least knitted to form by 2 strands of wires, and the sheath is by hollow
Metallic coil, macromolecule tubing or composite pipe composition.
Above-mentioned flexible transmission system, wherein, the diameter range of the flexible drive shaft is 0.15mm-0.53mm.
Above-mentioned flexible transmission system, wherein, the diameter range of the flexible drive shaft is 0.36mm-0.51mm, described
Flexible drive shaft is circle stock braiding hank knotting.
Above-mentioned flexible transmission system, wherein, the flexible drive shaft uses 3*1,5*1,6*1,7*1,8*1,9*1,12*
1 or 37*1 braiding structure.
Above-mentioned flexible transmission system, wherein, the mass ratio of the sheath and flexible drive shaft is 6-351.
Above-mentioned flexible transmission system, wherein, the gap between the flexible drive shaft and sheath is 0.05mm-
0.41mm。
The utility model is to provide a kind of percutaneous auxiliary pump to solve another technical scheme that above-mentioned technical problem is used
Blood device, including drive module, control module and the pump blood conduit of human body can be percutaneously implantable, the drive module be located in vitro with
The pump blood conduit is provided separately, and the distal end of the drive module is connected by flexible transmission system with the pump blood conduit, institute
Being connected proximally by signal wire with the control module for drive module is stated, wherein, the flexible transmission system is above-mentioned flexibility
Transmission system.
Above-mentioned percutaneous auxiliary blood pumping device, the two ends of the flexible transmission system respectively with external drive module and pump blood
Impeller is connected, and the pump blood impeller includes wheel hub and blade, the wheel hub by distal end axle stream wheel hub section and the oblique flow wheel of near-end
Hub section is constituted；The axle stream wheel hub section includes axle stream wheel hub leading portion and axle stream wheel hub back segment, the external diameter of the axle stream wheel hub leading portion
Become larger by distal-to-proximal to identical with the axle stream wheel hub back segment diameter, the oblique flow wheel hub section hub diameter is by distal end
Become larger to near-end, the distal diameter of the oblique flow wheel hub section is identical with the hub diameter in the axle stream wheel hub back segment, institute
The proximal diameter for stating oblique flow wheel hub section is identical with the external diameter of the impeller.
Above-mentioned percutaneous auxiliary blood pumping device, wherein, the length of the axle stream wheel hub section and oblique flow wheel hub section in the axial direction
Proportion is 9:1~1:1, the oblique flow wheel hub section near-end oblique flow diffusion structure coordinates with outflow window constitutes flow pass,
Length ratio scope of the oblique flow wheel hub section with outflow window in the axial direction is 0.5：1~3：1；In the axle stream wheel hub back segment
Hub ratio be 0.25~0.6；The external diameter of the pump blood impeller is less than 10mm.
Above-mentioned percutaneous auxiliary blood pumping device, wherein, the blade is at least continuous sheet of blade, the continuous blade by
Distal-to-proximal including axial blade and oblique flow blade, the axial blade is correspondingly arranged on the wheel hub of axle stream section, described oblique
Stream blade is correspondingly arranged on the wheel hub of the oblique flow wheel hub section, and the axial blade is by distal-to-proximal including axle inflow entrance leaf
Piece and axle stream main body blade, the blade angle of the continuous blade are gradually increased by distal-to-proximal.
Above-mentioned percutaneous auxiliary blood pumping device, wherein, the blade angular region of the axle inflow entrance blade is 5 °~65 °, institute
The blade angular region for stating axle stream main body blade is 30 °~70 °, and the blade angular region of the oblique flow blade is 55 °~85 °.
Above-mentioned percutaneous auxiliary blood pumping device, wherein, the blade angle consecutive variations of continuous each section of the blade, the axle stream
The blade angle of inlet louver near-end is identical with the blade angle of axle stream main body blade distal end, the blade of the oblique flow blade distal end
Angle is identical with the blade angle of main paragraph near-end.
The utility model is to provide a kind of intravascular blood to solve the third technical scheme that above-mentioned technical problem is used
Bolt suction system, including the suction catheter of human body can be percutaneously implantable and positioned at external drive module, the suction catheter includes
Enter and filter screen be provided with blood mouthful, channel of blood flow and blood outlet, the channel of blood flow of the suction catheter, the filter screen and blood outlet it
Between or blood outlet at be provided with impeller；The impeller is connected with the drive module；The distal end of the drive module passes through flexibility
Transmission system is connected with the suction catheter, and the drive module is connected proximally by signal wire with control module；Wherein, institute
Flexible transmission system is stated for above-mentioned flexible transmission system, the flexible drive shaft is connected by bridging structure with the impeller.
Above-mentioned Intravascular Thrombus suction system, wherein, the drive module includes support housing, drive motor and bridge joint
Structure, the distal end of the drive module bridging structure connects the flexible drive shaft in the flexible transmission system, the driving mould
The near-end of block bridging structure connects the rotating shaft of the drive motor.
Above-mentioned Intravascular Thrombus suction system, wherein, the drive motor is to be gone back in air motor, the support housing
It is provided with cooling structure, speed-measuring structure, exhaust structure and denoising structure, the control module is to the drive module output control
The output pressure of signal control source of the gas is controlled to steamer rotating speed, while speed-measuring structure feedback steamer actual speed is used for
Form closed-loop control.
Above-mentioned Intravascular Thrombus suction system, wherein, the drive motor is to be gone back in electro-motor, the support housing
Cooling structure is provided with, the control module provides drive signal electromechanical source, the drive module feedback to the drive module
The running status of motor.
Above-mentioned Intravascular Thrombus suction system, wherein, the control module includes controller main body, electrical system and control
The system software that device processed is carried, and with human-computer interaction interface；The controller main body passes through signal wire with the drive module
It is connected, the controller main body transmits and receives the operational factor of the drive module inner motor；The system software is used to set
Put system operational parameters, control system operation, the running status for monitoring the suction catheter in real time.
Above-mentioned Intravascular Thrombus suction system, wherein, the mesh area scope of the filter screen is 0.1mm2-16mm2。
The utility model contrast prior art has following beneficial effect：The flexible transmission system of the utility model offer,
Percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system, by the way that the compliant rotational axle of flexible transmission system is arranged at least
The braiding hank knotting being knitted to form by two strands of wires, for the design of Flexible Transmission shaft diameter, it is generally recognized that motor can not be less than
The spindle outer diameter of the diameter of rotating shaft, such as motor is 1.0mm, and the external diameter of drive shaft, which is generally acknowledged that, be at least 1.0mm.With showing
There is circular monofilaments structure to compare, the braiding hank knotting of same outer diameter can meet long-time, high rotating speed, being steadily driven for task, control
The mass ratio of sheath and flexible drive shaft, it is possible to reduce the vibration of flexible transmission system, in the utility model, it is contemplated that sheath
Size should control in the small damage to reduce to human vas as far as possible, weight than control between 6-351, conduit run when feel
Feel less than vibration, and when using 3*1,5*1,6*1,7*1,7*7,8*1,9*1 or 37*1 braiding structure, even if sheath and flexibility
The mass ratio of drive shaft as little as 6, the effect that can also have extraordinary reduction oscillating load, this point is very unexpected.
The average radius of curvature of normal adult's arch of aorta is about 47.5mm, but the radius of curvature phase not to the utmost of each individual
Together, for the flexible transmission system rotated in addition to for a long time, at a high speed, certain bending occurs for possible unexpected stress in vitro, right
Motor produces certain current signal disturbance, and this disturbance can influence the estimation to flow, between flexible drive shaft and sheath
Clearance control is when driving the 10%-90% of shaft diameter, or when between 0.05mm-0.41mm, the radius of curvature of transmission system
Even if as little as 35mm, motor current signal is also had no significant effect, most situations in clinical practice are met.Cause
This, the utility model is designed by the material-structure to flexible drive shaft and sheath, and between flexible drive shaft and sheath
Matching design, particularly controls the mass ratio between sheath and drive shaft, the gap between sheath and drive shaft so that motor is high
During speed rotation, the vibration of imperceptible transmission system makes patient more comfortable safe when using.
Brief description of the drawings
Fig. 1 be the utility model embodiment in be connected with motor flexible transmission system structural representation；
Fig. 2-1,2-2,2-3,2-4,2-5 are respectively that 2*1,3*1,7*1,12*1,37* are used in the utility model embodiment
The braiding hank knotting schematic cross-section of 1 braiding structure；
Fig. 3 is percutaneous auxiliary pump blood device architecture schematic diagram in the utility model embodiment；
Fig. 4 is percutaneous auxiliary blood pumping device connection control schematic diagram in the utility model embodiment；
Fig. 5 is the wheel hub cross-sectional view of pump blood impeller in the utility model embodiment；
Fig. 6 is the overall structure diagram of pump blood impeller in the utility model embodiment；
Fig. 7 is the blade plane expanded schematic diagram of pump blood impeller in the utility model embodiment；
Fig. 8 is wheel hub of the present utility model and flow field change schematic diagram；
Fig. 9 is the structural representation of the continuous blade of subsection gradual of pump blood impeller in the utility model embodiment；
Figure 10 is pump blood impeller of the present utility model and flow-lift correlation curve of conventional impellers；
Figure 11 is that blade angle defines schematic diagram；
Figure 12 is the structural representation of the utility model Intravascular Thrombus suction system；
Figure 13 is the operating diagram of the utility model Intravascular Thrombus suction system.
In figure：
The control module of 12 drive module of pump blood conduit 3
The axle stream wheel hub section of 4 flexible transmission system, 5 signal wire 6
The 7 oblique flow wheel hub 8 continuous axial blades of blade 9 of section
The pump blood impeller of 10 oblique flow blade, 11 channel of blood flow 12
Adapter 14 flows out window in 13 bodies
The motor of 21 drive motor, 22 support housing 23
The electrical system of 31 controller 32
The restraint layer of 41 sheath, 42 drive shaft 43
The axle stream wheel hub back segment of 61 axle stream wheel hub leading portion 62
The axle stream main body blade of 91 axle inflow entrance blade 92
The impeller of 100 suction catheter, 200 filter screen 300
101 enter the blood mouthful channel of blood flow of 102 blood outlet 103
The thrombus of 400 sheath, 41 500 blood vessel 600
700 blood
Embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
Refer to Fig. 1, the flexible transmission system that the utility model is provided, including positioned at the He of flexible drive shaft 42 of internal layer
Sheath 41 positioned at the outside of flexible drive shaft 42, is filled with perfusion liquid, flexible drive shaft between flexible drive shaft 42 and sheath 41
42 be that the circle stock being at least knitted to form by 2 strands of wires weaves hank knotting, is preferably knitted to form by 6-37 strands of wires；Sheath 41 by
Hollow metallic coil, macromolecule tubing or composite pipe composition.The diameter range of flexible drive shaft is 0.15mm-0.6mm；
It is preferred that 0.36mm-0.51mm, the structure of circle stock braiding hank knotting is described with stock (M) number and silk (N) number, braiding structure is represented with M*N,
Braiding hank knotting has M (M is the integer more than or equal to 2) stock, per share to have N (N is more than or equal to 1 integer) silk, such as 3*1,5*1,6*
1st, 7*1,7*7,8*1,9*1 or 37*1 etc., accompanying drawing 2-1 to 2-5 list 2*1,3*1,7*1,12*1,37*1 section knot respectively
Structure.
The mass ratio of the flexible transmission system that the utility model is provided, sheath 41 and flexible drive shaft 42 is 6-351, preferably
9-34；Gap between flexible drive shaft 42 and sheath 41 is preferably 0.05mm-0.41mm.
Embodiment 1
With a diameter of 0.15mm, length is 1100mm, and the L605 hank knottings by braiding structure of 3*1 are drive shaft 42, within
Footpath is 0.2mm, and external diameter is 3.0mm, the composition flexible transmission system 4 of sheath 41 that length matches with drive shaft 42, wherein sheath
41 are made up of the closed macromolecule tubing of hollow helix tube and outer layer.The two ends of transmission system respectively with external drive module 2
Connected with pump blood impeller 12, drive module 2 can be to be filled in motor 23, flexible transmission system 4 with perfusion liquid.Drive shaft 42
Weight is about 0.15g, and the weight of sheath 41 is about 54g, and the weight ratio of sheath 41 and drive shaft 42 is about 351；Motor 23 with
2000 turns per second of speed is risen to after 50000 revs/min, and continuous service vibration is small, and imperceptible flexible transmission system 4 is shaken
Dynamic, vibration displacement is less than 0.001mm.
Embodiment 2
With a diameter of 0.36mm, length is that L605 hank knottings of the 1200mm using 7*1 as braiding structure is drive shaft 42, with internal diameter
For 0.56mm, external diameter is 2.1mm, and the length of drive shaft 42 is sheath 41 with the PTFE tube that drive shaft 42 matches, and composition is flexible to be passed
Dynamic system 4.The two ends of flexible transmission system 4 are connected with external motor 23 and pump blood impeller 12 respectively, are filled out in flexible transmission system 4
It is filled with perfusion liquid.The weight of drive shaft 42 is about 0.97g, and the weight of sheath 41 is about 8.9g, the weight of sheath 41 and drive shaft 42
The ratio between amount about 9；Motor 23 is risen to after 40000 revs/min with 2000 turns per second of speed, and continuous service vibration is small, is felt
Vibrated less than flexible transmission system 4, vibration displacement is less than 0.001mm.
Embodiment 3
With a diameter of 0.46mm, length is that 304 stainless steel wires of the 1400mm using 12*1 as braiding structure are drive shaft 42,
Using internal diameter as 0.87mm, external diameter is 3.0mm, the composition flexible transmission system 4 of sheath 41 that length matches with drive shaft 42, wherein
Sheath 41 is double-layer structure, and its internal layer is the helix tube that 304 stainless steels are processed, and outer layer is managed for PU.Flexible transmission system 4
Two ends are connected with external motor and pump blood impeller respectively, are passed and are filled in flexible dynamic system 4 with perfusion liquid.The weight of drive shaft 42 is about
For 1.85g, the weight of sheath 41 is about 63.4g, and the weight ratio of sheath 41 and drive shaft 42 is about 34；Motor 23 is with per second
2000 turns of speed is risen to after 45000 revs/min, and continuous service vibration is small, and imperceptible flexible transmission system 4 is vibrated, and shakes
Dynamic displacement is less than 0.001mm.
Embodiment 4
With a diameter of 0.52mm, length is that MP35N hank knottings of the 1300mm using 37*1 as braiding structure is drive shaft 42, within
Footpath is 0.57mm, and external diameter is 2.7mm, the composition flexible transmission system 4 of sheath 41 that the length of drive shaft 42 matches with drive shaft 42,
Wherein sheath 41 is double-layer structure, and its internal layer is the helix tube that 304 stainless steels are processed, and outer layer is managed for PU.Flexible Transmission system
The two ends of system 4 are connected with external motor 23 and pump blood impeller 12 respectively, and filling is with perfusion liquid in flexible transmission system 4.Drive shaft
42 weight is about 2.2g, and the weight of sheath 41 is about 28.4g, and the weight ratio of sheath 41 and drive shaft 42 is about 13；Motor
23 are risen to after 45000 revs/min with 2000 turns per second of speed, and continuous service vibrates small, imperceptible flexible transmission system 4
Vibration, vibration displacement is less than 0.001mm.
Embodiment 5
With a diameter of 0.46mm, length is that L605 hank knottings of the 1200mm using 37*1 as braiding structure is drive shaft 42, within
Footpath is 0.50mm, and external diameter is 2.2mm, and the length of drive shaft 42 is sheath 41 with the PTFE tube that drive shaft 42 matches, and composition is flexible
Transmission system 4.The two ends of flexible transmission system 4 are connected with external motor 23 and pump blood impeller 12 respectively, in flexible transmission system 4
Filling is with perfusion liquid.The weight of drive shaft 42 is about 1.58g, and the weight of sheath 41 is about 9.9g, sheath 41 and drive shaft 42
Weight ratio is about 6.2；Motor 23 is risen to after 40000 revs/min with 2000 turns per second of speed, and continuous service vibration is small,
Imperceptible flexible transmission system 4 is vibrated, and vibration displacement is less than 0.002mm.
Embodiment 6
With a diameter of 0.6mm, length is that MP35N hank knottings of the 1200mm using 37*1 as braiding structure is drive shaft 42, within
Footpath is 0.66mm, and external diameter is 2.7mm, the composition flexible transmission system 4 of sheath 41 that the length of drive shaft 42 matches with drive shaft 42,
Wherein sheath 41 is double-layer structure, and its internal layer is the helix tube that 304 stainless steels are processed, and outer layer is managed for PU.Flexible Transmission system
The two ends of system 4 are connected with external motor 23 and pump blood impeller 12 respectively, and filling is with perfusion liquid in flexible transmission system 4.Drive shaft
24 weight is about 2.69g, and the weight of sheath 41 is about 25.92g, and the weight ratio of sheath 41 and drive shaft 42 is about 9.6；Electricity
Machine 23 is risen to after 45000 revs/min with 2000 turns per second of speed, and continuous service vibrates small, imperceptible Flexible Transmission system
System 4 vibrates, and vibration displacement is less than 0.001mm.
Embodiment 7
With a diameter of 0.6mm, length is 1200mm, and the MP35N hank knottings of different braiding structures are drive shaft 42, using internal diameter as
0.66mm, external diameter is 2.8mm, the composition flexible transmission system 4 of sheath 41 that the length of drive shaft 42 matches with drive shaft 42, wherein
Sheath 41 is PTFE tube.The two ends of flexible transmission system 4 are connected with external motor 23 and pump blood impeller 12 respectively, Flexible Transmission system
Filling is with perfusion liquid in system 4.The weight of drive shaft 42 is about 2.69g, and the weight of sheath 41 is about 16.04g, sheath 41 and driving
The weight ratio of axle 42 is about 6；Motor 23 is risen to after 45000 revs/min with 2000 turns per second of speed, continuous service, is compiled
Knit structure and be followed successively by 2*1,3*1,5*1,6*1,7*1,8*1,9*1,12*1 and 37*1, hank knotting is woven as drive shaft 42 using 2*1
The vibration displacement of flexible transmission system 4 is about 0.005mm, using the hank knotting of other braiding structures as the flexible transmission system of drive shaft 42
4 vibration displacements are less than 0.002mm.
Embodiment 8
Flexible transmission system 4 in Example 1-6, it is 35mm, 40mm and 55mm that radius of curvature is partially placed into successively
In semicircle model, run with 33000 revs/min of rotating speed, being averaged in motor Hall sensor in running is recorded respectively
Electric current, the change of embodiment 1-4 and the radius of curvature of embodiment 6, the disturbance to current of electric is less than 10%, the curvature of embodiment 5 half
Disturbance of the change in footpath to current of electric is about 15%.
The coating of lubricating function can be carried on above-described embodiment, flexible drive shaft 42 with coated with PTFE or Parylene etc.,
Restraint layer 43 can also be set in sheath 41, and restraint layer 43 is the amplitude of fluctuation for being mainly used in limiting flexible drive shaft 42.
The flexible transmission system 4 that the utility model is provided can be applicable to drive module and be located at external percutaneous auxiliary pump blood dress
Put with Intravascular Thrombus suction system, be described in detail separately below.
Fig. 3 is the percutaneous auxiliary pump blood device architecture schematic diagram of the utility model；Fig. 4 is percutaneous in the utility model embodiment
Aid in blood pumping device connection control schematic diagram.
Refer to Fig. 3 and Fig. 4, percutaneous auxiliary blood pumping device that the utility model is provided, including one can be percutaneously implantable
Pump blood conduit 1, an external drive module 2 and an external control module 3.Pump blood conduit 1 is that can be implanted into through femoral artery
Small blood pump, comprising UNICOM's Left Ventricular and the channel of blood flow 11 of sustainer and one the pump blood structure containing impeller
(pump blood impeller 12), the tail end of pump blood conduit 1 is connected by flexible transmission system 4 with drive module 2.In use, driving mould
Block 2 is located in vitro, and comprising drive motor 21, the distal end of drive module 2 is connected by flexible transmission system 4 with pump blood conduit 1,
Drive module 2 is connected proximally by signal wire 5 with control module 3；In use, control module 3 is located in vitro, insertion is included
Formula controller 31 and electrical system 32, drive module 2 are connected by signal wire 5 with control module 3, and inside is loaded with control system
System software simultaneously provides human-computer interaction interface.
The percutaneous auxiliary blood pumping device that the utility model is provided, the course of work is as follows：When beginning to use, pass through man-machine interface
Control parameter is inputted to control module 3 and operational factor is converted to by embedded controller 31；Embedded controller 31 during operation
By signal wire 5 to drive module 2 send drive signal, control drive module 2 in drive motor 21 according to set operational factor
Operation；Driving torque is transferred to the pump blood impeller 12 in pump blood conduit 1, pump blood leaf by flexible transmission system 4 by drive module 2
12 being rotated by flexible transmission system 4 are taken turns, blood pump in left ventricle is entered into sustainer；Last drive module 2 is by motor
Actual motion status signal feed back to control module 3, for formed closed-loop control and in real time monitoring blood pump running status.
Pump blood conduit 1 includes blood flow entrance, channel of blood flow 11, pump blood impeller 12, blood stream outlet and bridging structure composition.Its
Middle blood flow entrance, channel of blood flow 11 and blood stream outlet constitute across valve passage, and blood supply liquid passes through；In across valve passage and passage
Pump blood impeller 12 constitutes Small blood pump, can be sucked by wheel rotation active inducing blood by blood flow entrance, flow through channel of blood flow
Pumped out after 11 by blood stream outlet；Pump blood impeller 12 is connected by bridging structure with the drive shaft 42 in flexible transmission system 4, is being driven
Rotated under the drive of moving axis 42.
Flexible transmission system 4 is the torque transfer arrangement between drive module 2 and pump blood conduit 1, the bridge in drive module 2
Interface rises, and the bridge joint mouthful to pump blood conduit 1 stops, including drive shaft 42 and sheath 41.Sheath 41 is to be provided to the drive shaft 42
The rear duct of drive cavity, the drive shaft 42 is the braiding hank knotting that embodiment 1- embodiments 8 are provided.Flexible transmission system 4 is closed
Suitable length range, can the still effective transmission transmission torsion in the state of irregularly completely preferably between 80cm-200cm
Square.
Drive module 2 includes support housing 22, drive motor 21 and bridging structure.Include cooling knot in support housing 22
Structure, while being that drive motor 21 and bridging structure provide fixed space.Drive in bridging structure distal end connection flexible transmission system 4
Moving axis 42, bridging structure near-end connects the distal rotary shaft of drive motor 21.During operation, bridging structure is under the driving of drive motor 21
Rotate and drive drive shaft 42.Drive motor 21, to drive the terminal power source that pump blood impeller 12 is rotated, can be electro-motor
Or air motor；Control module 3 includes the system software that embedded controller 31, electrical system 32 and controller 31 are carried.It is embedding
Enter formula controller 31 with drive module 2 by signal wire 5 to be connected, transmit and receive the operational factor of the inner motor of drive module 2；
System software is used to set system operational parameters, the running status of control system operation, in real time display pump blood conduit 1.
Pump blood impeller 12, including wheel hub and blade, can be axial wheel, diagonal impeller or axial wheel and diagonal impeller
Combination；In one embodiment, refer to Fig. 5 and Fig. 6, wheel hub by axle stream wheel hub section 6 and oblique flow wheel hub section 7 impeller axis
Coordinate on direction in certain length ratio and constitute, wheel nose blood is sucked in axle stream during wheel rotation pump blood, rear end is in oblique flow
Pump out, centrifuge both of which by front end axial pressure difference and rear end ensures pump CBF and lift to blood acting, while oblique flow
Wheel hub 7 rear end oblique flow diffusion structures of section coordinate with outflow window 14 constitutes flow pass, makes blood by axial flow direction smooth transition
The blood compatibility for ensureing Small blood pump is pumped out by pump housing both sides in oblique flow.Axle stream wheel hub section 6 and oblique flow wheel hub section 7 are in the axial direction
Length mixing ratio scope preferably 9:1~1:1；It is preferred that length of the oblique flow wheel hub section 7 with outflow window 14 in the axial direction is matched somebody with somebody
Composition and division in a proportion example is 0.5:1~3:1, preferably 1.2:1~1.5:1.The wheel hub is preferably three-stage wheel hub structure, i.e., described axle stream
Wheel hub section 6 includes axle stream wheel hub leading portion 61 and axle stream wheel hub back segment 62, and the hub ratio of axle stream wheel hub back segment 62 is 0.25-0.6, excellent
Elect 0.35-0.45 as；Oblique flow wheel hub 7 hub diameters of section are become larger by distal-to-proximal, and 7 diameter changes of oblique flow wheel hub section can be with
It is linear gradient or increases along the specific curves gradual change of certain formula, the distal diameter and axle of oblique flow wheel hub section 7
The hub diameter for flowing wheel hub back segment 62 is identical, the diameter of oblique flow wheel hub section 7 near-end increase to maximum and with impeller outer diameter D phases
Together.Axle stream wheel hub leading portion 61 as entrance wheel hub, the external diameter of axle stream wheel hub leading portion 61 by it is distal-to-proximal become larger to
The diameter of axle stream wheel hub back segment 62 is identical, and axle stream wheel hub leading portion 61 can be that bullet type is sophisticated, linear gradient type is sophisticated, spherical circle
Top, or by carrying out the tip for the almost spherical dome that rounding processing is obtained to cylinder outer rim.The bullet type tip
Refer to dome cone-shaped tip.
Refer to Fig. 6-Fig. 9, the blade construction of pump blood impeller 12 is by least one by distal shaft stream section to near-end oblique flow section
Continuous and blade angle seamlessly transits the blade composition of change.Blade 8 continuous first be divided into axle stream section (axial blade 9) and after lead
Leaf section (oblique flow blade 10), corresponds to the axle stream wheel hub section 6 and oblique flow wheel hub section 7 in wheel hub structure, secondly in axial blade 9 respectively
From entrance and main paragraph in the axial direction in being constituted with certain length ratio.Therefore, by distal-to-proximal, continuous blade 8 is excellent
Choosing is divided into axle inflow entrance blade 91, axle stream main body blade 92, the part of oblique flow blade 10 3, and blade angle gradually increases.
Figure 11 is referred to, blade angle is the reverse tangent line of center line of blade profile liquid flow path direction along along impeller and peripheral speed direction
Angle, different blade angle makes blade have different fluid speciality, as shown in Figure 7.The pre- vapour proof in vanelets angle of impeller distal end
Erosion is produced, and by more stably flow field by blood intake impeller, the blade angular region of entrance axle inflow entrance blade 91 is 5 °
~65 °；Main paragraph axle stream main body blade 92 constitutes main circulation passage, and blood is done work, the blade angle of axle stream main body blade 92
Scope is 30 °~70 °；The rotation function that main paragraph is pumped out blood by tail end rear guide vane section oblique flow blade 10 is converted into pressure energy,
The blade angular region of oblique flow blade 10 is 55 °~85 °.Each section of blade angle can be fixed or consecutive variations.When
Linking angle is based on the angle of axle stream main body blade 92 when blade angle is continuous gradation, the blade angle of the near-end of axle inflow entrance blade 91
Degree is identical with the blade angle of the distal end of axle stream main body blade 92, blade angle and the axle stream main body blade 92 of the distal end of oblique flow blade 10
The blade angle of near-end is identical.The mode of blade angle angle gradient can be linear gradient or exponential type gradual change.Continuous blade 8
Thickness can be with constant, or with certain aerofoil profile feature；Preferably, vane thickness is no more than 0.8mm；It can be loaded on wheel hub
The continuous blade 8 of 1 or more than 1, number of blade scope preferably is 2~4.Above-mentioned wheel hub structure is pure relative to traditional
Axle stream and diagonal impeller provide more excellent pump blood efficiency in Small blood pump field.The flow field that the oblique flow of axle stream suction simultaneously is pumped out is special
The architectural feature for more meeting the Small blood pump being implanted into based on conduit is levied, more stable flow field is provided while pump blood efficiency is ensured
Distribution and more excellent blood compatibility.The blade construction simplifies overall structure and ensures pump blood while reducing difficulty of processing
Efficiency, improves the blood compatibility of impeller.
Percutaneous auxiliary blood pumping device, patient is actively aided in by the pump blood conduit 1 implanted disclosed in the utility model
Cardiac pumping, improves in preoperative, art, the blood fortune of postoperative patient is circulated.System passes through flexible drive system 4 and torque transfer arrangement
Realize can by external active matrix driving module drive pump blood conduit, avoid active parts to enter the biology that is brought in vivo completely
The rigid structure that one significantly affects operating difficulty in compatibility risk, shifting pump blood conduit is to external.It is located at simultaneously in vitro
Drive module relaxes volumetric constraint, can realize bigger driving power by the larger rating of electric machine, and module volume is put
Big complexity, the cost for significantly reducing drive module, while improving operation stability.Finally, positioned at external driving
Module runs the influence that radiating may be to blood environment in patient's body without considering, while between can using more effective structure simultaneously more
The radiator structure connect, more effective controlled motor state of temperature and then acquisition more stable maneuverability while reduction system cost
Energy.
Embodiment 9
Drive motor 21 uses electro-motor, and control module 3 provides drive signal electromechanical source to drive module 2, drives mould
Block 2 feeds back the running status of motor, and such as rotor speed, electric current are used to form closed-loop control；Control module 3 is using embedded hard
Part platform, carry by operating system, can by human-computer interaction interface supervisory control system running, including the running status of drive module 2 with
And the auxiliary pump CBF of pump blood conduit 1.Embedded controller 31 is driven by AC power, while to drive module 2 and pump blood
Conduit 1 provides direct current power.Drive module 2 is connected by signal wire 5 with control module 3, and the near-end of signal wire 5 is quick union,
It is connected with signal port on controller 31.Controller 31 provides driving power supply to drive module 2 by signal wire 5 and control is believed
Number.In drive module 2, signal wire 5 is directly connected with motor, and motor is rotated.In the present embodiment, motor be band suddenly
That DC hollow cup motor, is loaded in the fixed structure of drive module 2, drives drive mechanism to turn under control signal driving
It is dynamic, while feeding back hall signal for the estimation actual speed of controller 31 to form closed loop control to control module 3 by signal wire 5
System.Driven when being motor operation in quick connection structure, drive module 2 in control module 3, between drive mechanism and flexible transmission system 4
Transmission seal wire in flexible transmission system 4 is rotated, and transmission moment of torsion drives pump blood impeller 12 in pump blood conduit 1 into pump blood conduit 1
Rotate, realize auxiliary blood-pumping function.
Embodiment 10
Drive motor 21, which is used, also includes extra speed-measuring structure, exhaust structure and drop in air motor, support housing 22
Make an uproar structure, control module 3 is used to control the output pressure of source of the gas to control steamer rotating speed to the output control signal of drive module 2
System, while speed-measuring structure feedback steamer actual speed is used to form closed-loop control.In the present embodiment, drive module 2 is by driving vapour
Wheel, source of the gas, magnetic valve, speed-measuring structure and denoising structure are constituted.Source of the gas provides driving power, and controller 31 is by controlling magnetic valve
Switch control gas source feed air pressure is to adjust steamer rotating speed, and speed-measuring structure is sent out using laser velocimeter, fed back in real time to controller 31
Rotating speed is to form closed-loop control, and steamer is connected with pump blood leaf in transfer tube blood conduit 1 by exchanging structure with flexible transmission system 4
Wheel 12 realizes auxiliary blood-pumping function.
Embodiment 11
In the present embodiment, 4mm Small blood pump impellers use 6：1 axle stream section-oblique flow section ratio, 0.4 hub ratio, blade
Angle is 30 °, 60 °, 85 ° of the continuous blade of three-stage, and oblique flow section is 1 with outflow length of window ratio：1.In CFD simulations
Under 60mmHg pressure differential, 1.0L/min, 2.5L/min, 3.5L/min can be achieved in 30,000 rpm, 40,000 rpm, 50,000 rpm respectively
Pump CBF.
Under identical impeller specification and CFD simulated conditions, using conventional axial flow structural hub, single 60 ° of axial blades, but have
Oblique flow section gradual change wheel hub expands a control impeller of section after being formed, 0.5L/ can be achieved respectively in 30,000 rpm, 40,000 rpm, 50,000 rpm
Min, 1.0L/min, 2.0L/min pump CBF.
Under identical impeller specification and CFD simulated conditions, using conventional axial flow structural hub, single 60 ° of axial blades, without tiltedly
Another control impeller of section is flowed, 0.2L/min, 0.7L/min, 1.8L/ can be achieved respectively in 30,000 rpm, 40,000 rpm, 50,000 rpm
Min pump CBF.
In above-described embodiment, the utility model announces the flow-lift curve of impeller and control impeller under different rotating speeds
Contrast is respectively from top to bottom 50000 as shown in Figure 10, in Figure 10,40000, the flow under 30000rpm rotating speeds-lift it is bent
Line.Under same rotational speed, pressure differential, the utility model vane pump courage and uprightness can compare the axial wheel and biography for expanding section wheel hub after use
Axial wheel unite under 40000rpm running statuses, pump courage and uprightness can be promoted to the 250% and 357% of control Impeller Design respectively.
Embodiment 12
In the present embodiment, Small blood pump impeller is using three-stage wheel hub structure and three-stage change blade, with channel of blood flow
Coordinate the pump blood impeller of side outflow, axle stream section front end uses bullet type gradual change diameter, and oblique flow section diameter is become by exponential type curve
Change and expand curve after being formed.Impeller uses 6：1 axle stream section-oblique flow section ratio, 0.4 hub ratio, blade angle is 20 °, 60 °, 85 °
Three-stage continuous gradation blade, oblique flow section is 1.3 with outflow length of window ratio：1.In CFD simulations, 60mmHg pressure difference bars
Under part, 1.4L/min, 2.3L/min, 3.5L/min pump CBF can be achieved in 30,000 rpm, 40,000 rpm, 50,000 rpm respectively.
Under identical impeller specification and CFD simulated conditions, designed using identical wheel hub structure, blade is what blade angle was fixed
Continuous blade, 1.0L/min, 1.6L/min, 2.5L/min pump blood flow can be achieved in 30,000 rpm, 40,000 rpm, 50,000 rpm respectively
Amount.
In the present embodiment, under same rotational speed, pressure differential, the utility model vane pump courage and uprightness can be compareed using identical wheel hub
Structure fixes the Impeller Design of blade angle, under 40000rpm running statuses, and pump courage and uprightness can be promoted to control Impeller Design
144%.
Embodiment 13
Figure 12 is the structural representation of the utility model Intravascular Thrombus suction system.
Figure 12, the Intravascular Thrombus suction system that the present embodiment is provided are referred to, including the suction of human body can be percutaneously implantable
Conduit 100 and positioned at external drive module 2, suction catheter 100 is included into blood mouthful 101, channel of blood flow 103 and blood outlet 102,
Filter screen 200 is provided with the channel of blood flow 103 of suction catheter 100, is set between filter screen 200 and blood outlet 102 or at blood outlet 102
It is equipped with rotatable impeller 300；Impeller 300 is connected with drive module 2.It is preferred that the mesh area scope of filter screen 200 is
0.1mm2-16mm2。
In the Intravascular Thrombus suction system that the present embodiment is provided, drive module 2 is located to be separated with suction catheter 100 in vitro
Set, impeller 300 is driven by drive module 2, and the distal end of drive module 2 passes through flexible transmission system 4 and the phase of suction catheter 100
Even, drive module 2 is connected proximally by signal wire with control module.Flexible transmission system 4 includes drive shaft 42 and to drive
Moving axis 42 provides the sheath 41 of drive cavity, and drive shaft 42 is connected by bridging structure with impeller 300.Preferably, Flexible Transmission system
The length range of system 4 is 80cm~200cm, the braiding hank knotting that drive shaft 42 is provided by embodiment 1- embodiments 8.Drive module
2 are included in support housing, drive motor and bridging structure, the distal end connection flexible transmission system 4 of drive module bridging structure
Drive shaft 42, the near-end of drive module bridging structure connects the rotating shaft of the drive motor.
In the present embodiment, the drive motor can be air motor or electro-motor, and the drive motor is pneumatic horse
Up to when, be additionally provided with cooling structure, speed-measuring structure, exhaust structure and denoising structure, the control module in the support housing
The output pressure for controlling source of the gas to the drive module output control signal is controlled to steamer rotating speed, while the knot that tests the speed
Structure feedback steamer actual speed is used to form closed-loop control.When the drive motor is electro-motor, in the support housing also
Cooling structure is provided with, the control module provides drive signal electromechanical source, the drive module feedback to the drive module
The running status of motor.
The control module includes the system software that controller main body, electrical system and controller are carried, and with man-machine
Interactive interface；The controller main body is connected with the drive module by signal wire, and the controller main body is transmitted and received
The operational factor of the drive module inner motor；The system software is used to set system operational parameters, control system operation, reality
When monitor the running status of the suction catheter.
Figure 13 is referred to, when beginning to use, control parameter is inputted to controller by man-machine interface and changed by controller
For operational factor；During operation controller by signal wire to drive module send drive signal, control drive module inner motor according to
Run according to set operational factor；Driving torque is transferred to the leaf in suction catheter 100 by flexible transmission system by drive module
Wheel 300, impeller 300 is rotated, and blood and thrombus 600 are together from the suction of blood mouthful 101 is entered, and during through screen pack 200, blood normal energy leads to
Cross from blood outlet 102 and flow out into blood circulation system, thrombus 600 is stayed on filter screen 200.Suction catheter 100 is removed in vitro
When, thrombus 600 follows suction catheter 100 to remove together in vitro.
Therefore, the percutaneous access of suction catheter 100 has the artery or vein of thrombus.Impeller when drive device rotates at a high speed
300 rotate at a high speed, form negative pressuren zone entering blood mouthful 101, the blood containing thrombus 600 are sucked into suction catheter 100, through screen pack
When 200, blood 700 can pass through, but can not then pass through more than the thrombus 600 of the mesh of filter screen 200, so as to by the He of thrombus 600
Blood 700 is separated, and blood 700 returns to blood vessel 500 by blood outlet 102.Bolt mode, this reality are taken relative to balloon-stent etc.
The Intravascular Thrombus suction system of example offer is applied without blocking blood flow, using the Smoking regime of negative pressure, takes bolt safer, is not concerned about
Fracture and flake off.Relative to existing suction catheter technology, during the Intravascular Thrombus suction system provided using the present embodiment, disease
Human blood is returned to blood circulation after screen pack 200 and without losing blood, thrombus is also moved in the lump when suction catheter 100 withdraws from external
Go out.
Although the utility model is disclosed as above with preferred embodiment, so it is not limited to the utility model, any
Those skilled in the art, are not departing from spirit and scope of the present utility model, when can make a little modification and perfect, therefore this
The protection domain of utility model is when by being defined that claims are defined.
Claims (18)
1. a kind of flexible transmission system, it is characterised in that including the flexible drive shaft positioned at internal layer and positioned at the soft drive
Sheath on the outside of axle, is filled with perfusion liquid, the flexible drive shaft is at least by 2 money paid for shares between the flexible drive shaft and sheath
The braiding hank knotting that category silk is knitted to form, the sheath is made up of hollow metallic coil, macromolecule tubing or composite pipe.
2. flexible transmission system as claimed in claim 1, it is characterised in that the diameter range of the flexible drive shaft is
0.15mm-0.6mm。
3. flexible transmission system as claimed in claim 2, it is characterised in that the diameter range of the flexible drive shaft is
0.36mm-0.51mm, the flexible drive shaft is circle stock braiding hank knotting.
4. flexible transmission system as claimed in claim 1, it is characterised in that the flexible drive shaft using 3*1,5*1,6*1,
7*1,8*1,9*1,3+9 or 37*1 braiding structure.
5. flexible transmission system as claimed in claim 1, it is characterised in that the mass ratio of the sheath and flexible drive shaft is
6-351。
6. flexible transmission system as claimed in claim 1, it is characterised in that the gap between the flexible drive shaft and sheath
For 0.05mm-0.41mm.
7. a kind of percutaneous auxiliary blood pumping device, including drive module, control module and the pump blood conduit of human body, institute can be percutaneously implantable
State drive module and be located at and be provided separately in vitro with the pump blood conduit, the distal end of the drive module by flexible transmission system with
The pump blood conduit is connected, and the drive module is connected proximally by signal wire with the control module, it is characterised in that institute
It is the flexible transmission system described in claim any one of 1-6 to state flexible transmission system.
8. percutaneous auxiliary blood pumping device as claimed in claim 7, it is characterised in that the two ends difference of the flexible transmission system
Be connected with external drive module and pump blood impeller, the pump blood impeller include wheel hub and blade, the wheel hub by distal end axle stream
Wheel hub section and the oblique flow wheel hub section of near-end are constituted；The axle stream wheel hub section includes axle stream wheel hub leading portion and axle stream wheel hub back segment, institute
The external diameter for stating axle stream wheel hub leading portion is become larger to, the oblique flow identical with the axle stream wheel hub back segment diameter by distal-to-proximal
Wheel hub section hub diameter is become larger by distal-to-proximal, the distal diameter and the axle stream wheel hub back segment of the oblique flow wheel hub section
Interior hub diameter is identical, and the proximal diameter of the oblique flow wheel hub section is identical with the external diameter of the impeller.
9. percutaneous auxiliary blood pumping device as claimed in claim 8, it is characterised in that the axle stream wheel hub section and oblique flow wheel hub section
Length ratio scope in the axial direction is 9:1~1:1, the oblique flow wheel hub section near-end oblique flow diffusion structure is matched somebody with somebody with outflow window
Close and constitute flow pass, length ratio scope of the oblique flow wheel hub section with outflow window in the axial direction is 0.5：1~3：1；Institute
It is 0.25~0.6 to state the hub ratio in axle stream wheel hub back segment；The external diameter of the pump blood impeller is less than 10mm.
10. percutaneous auxiliary blood pumping device as claimed in claim 8, it is characterised in that the blade is at least continuous sheet of leaf
Piece, the continuous blade is by distal-to-proximal including axial blade and oblique flow blade, and the axial blade is correspondingly arranged at axle stream
On the wheel hub of section, the oblique flow blade is correspondingly arranged on the wheel hub of oblique flow wheel hub section, the axial blade by distally to
Near-end includes axle inflow entrance blade and axle stream main body blade, and the blade angle of the continuous blade is gradually increased by distal-to-proximal.
11. percutaneous auxiliary blood pumping device as claimed in claim 10, it is characterised in that the blade angle of the axle inflow entrance blade
Scope is 5 °~65 °, and the blade angular region of the axle stream main body blade is 30 °~70 °, the blade angular region of the oblique flow blade
For 55 °~85 °.
12. percutaneous auxiliary blood pumping device as claimed in claim 10, it is characterised in that the blade angle of continuous each section of the blade
Consecutive variations, the blade angle of the axle inflow entrance blade proximal end is identical with the blade angle of axle stream main body blade distal end, described
The blade angle of oblique flow blade distal end is identical with the blade angle of main paragraph near-end.
13. a kind of Intravascular Thrombus suction system, including the suction catheter of human body can be percutaneously implantable and positioned at external driving mould
Block, the suction catheter is included into blood mouthful, channel of blood flow and blood outlet, and filter is provided with the channel of blood flow of the suction catheter
Net, impeller is provided between the filter screen and blood outlet or at blood outlet；The impeller is connected with the drive module；It is described to drive
The distal end of dynamic model block is connected by flexible transmission system with the suction catheter, the drive module proximally by signal wire with
Control module is connected；Characterized in that, the flexible transmission system is the Flexible Transmission system described in claim any one of 1-6
System, the flexible drive shaft is connected by bridging structure with the impeller.
14. Intravascular Thrombus suction system as claimed in claim 13, it is characterised in that it is outer that the drive module includes support
Shell, drive motor and bridging structure, the distal end of the drive module bridging structure connect the flexibility in the flexible transmission system
Drive shaft, the near-end of the drive module bridging structure connects the rotating shaft of the drive motor.
15. Intravascular Thrombus suction system as claimed in claim 14, it is characterised in that the drive motor is pneumatic horse
Reach, be additionally provided with cooling structure, speed-measuring structure, exhaust structure and denoising structure in the support housing, the control module to
The output pressure of the drive module output control signal control source of the gas is controlled to steamer rotating speed, while the speed-measuring structure
Feedback steamer actual speed is used to form closed-loop control.
16. Intravascular Thrombus suction system as claimed in claim 14, it is characterised in that the drive motor is electronic horse
Reach, cooling structure is additionally provided with the support housing, it is electromechanical that the control module provides drive signal to the drive module
Source, the drive module feeds back the running status of motor.
17. Intravascular Thrombus suction system as claimed in claim 13, it is characterised in that the control module includes controller
The system software that main body, electrical system and controller are carried, and with human-computer interaction interface；The controller main body is driven with described
Dynamic model block is connected by signal wire, and the controller main body transmits and receives the operational factor of the drive module inner motor；Institute
Stating system software is used to set system operational parameters, control system operation, the running status for monitoring the suction catheter in real time.
18. Intravascular Thrombus suction system as claimed in claim 13, it is characterised in that the mesh area scope of the filter screen
For 0.1mm2-16mm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621106663.2U CN206443963U (en) | 2016-10-09 | 2016-10-09 | Flexible transmission system, percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621106663.2U CN206443963U (en) | 2016-10-09 | 2016-10-09 | Flexible transmission system, percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206443963U true CN206443963U (en) | 2017-08-29 |
Family
ID=59661654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621106663.2U Withdrawn - After Issue CN206443963U (en) | 2016-10-09 | 2016-10-09 | Flexible transmission system, percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system |
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| Country | Link |
|---|---|
| CN (1) | CN206443963U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106512117A (en) * | 2016-10-09 | 2017-03-22 | 丰凯医疗器械（上海）有限公司 | A flexible transmission system, a percutaneous blood pumping assisting device and an intravascular thrombus suction system |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| CN112704811A (en) * | 2020-12-22 | 2021-04-27 | 上海微创医疗器械（集团）有限公司 | Perfusion device and blood pump comprising same |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11368081B2 (en) | 2018-01-24 | 2022-06-21 | Kardion Gmbh | Magnetic coupling element with a magnetic bearing function |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| WO2023280245A1 (en) * | 2021-07-07 | 2023-01-12 | 上海焕擎医疗科技有限公司 | Impeller of cardiac assistance device, and cardiac assistance device |
| 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 |
| US11754075B2 (en) | 2018-07-10 | 2023-09-12 | Kardion Gmbh | Impeller for an implantable, vascular support system |
| US11944805B2 (en) | 2020-01-31 | 2024-04-02 | Kardion Gmbh | Pump for delivering a fluid and method of manufacturing a pump |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
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| CN106512117A (en) * | 2016-10-09 | 2017-03-22 | 丰凯医疗器械（上海）有限公司 | A flexible transmission system, a percutaneous blood pumping assisting device and an intravascular thrombus suction system |
| CN106512117B (en) * | 2016-10-09 | 2023-08-04 | 丰凯利医疗器械(上海)有限公司 | Flexible transmission system, percutaneous auxiliary blood pumping device and intravascular thrombus aspiration system |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | 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 |
| US11368081B2 (en) | 2018-01-24 | 2022-06-21 | Kardion Gmbh | Magnetic coupling element with a magnetic bearing function |
| US11804767B2 (en) | 2018-01-24 | 2023-10-31 | Kardion Gmbh | Magnetic coupling element with a magnetic bearing function |
| 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 |
| US12005248B2 (en) | 2018-05-16 | 2024-06-11 | Kardion Gmbh | Rotor bearing system |
| US11754075B2 (en) | 2018-07-10 | 2023-09-12 | Kardion Gmbh | Impeller for an implantable, vascular support system |
| 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 |
| US11944805B2 (en) | 2020-01-31 | 2024-04-02 | Kardion Gmbh | Pump for delivering a fluid and method of manufacturing a pump |
| CN112704811A (en) * | 2020-12-22 | 2021-04-27 | 上海微创医疗器械（集团）有限公司 | Perfusion device and blood pump comprising same |
| WO2023280245A1 (en) * | 2021-07-07 | 2023-01-12 | 上海焕擎医疗科技有限公司 | Impeller of cardiac assistance device, and cardiac assistance device |
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