CN110848150A - Device for testing stability of blood pump rotor under human motion condition - Google Patents
Device for testing stability of blood pump rotor under human motion condition Download PDFInfo
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- CN110848150A CN110848150A CN201911388834.3A CN201911388834A CN110848150A CN 110848150 A CN110848150 A CN 110848150A CN 201911388834 A CN201911388834 A CN 201911388834A CN 110848150 A CN110848150 A CN 110848150A
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- blood pump
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- 239000008280 blood Substances 0.000 title claims abstract description 98
- 210000004369 blood Anatomy 0.000 title claims abstract description 98
- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000013519 translation Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 4
- 206010019280 Heart failures Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007675 cardiac surgery Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention belongs to the technical field of testing, and particularly relates to an experimental device for simulating the translation and rotation characteristics of a human body and testing the stability of a rotor, which is used for testing the running stability of a blood pump motor. Comprises a blood pump clamp, a swing arm, a support table and a linear motor. The blood pump clamp part comprises a base, an open slot pressing plate, a cam and the like. The support table is fixed on a plane, and a direct current motor is fastened above the support table; the motor drives the swing arm to drive the blood pump clamp and the blood pump to move in translation, and the blood pump clamp can also be directly fixed on the linear motor to rotate without the swing arm. The six-axis motion attitude gyroscope sensor can be used for adjusting the sizes of analog translation and rotation. The invention can simulate the kinematics of the blood pump motor under the conditions of daily translation and rotation of the human body, and has the characteristics of simple and convenient operation, accurate simulation, high automation degree and the like.
Description
Technical Field
The invention relates to the technical field of blood pumps, in particular to a device for testing the stability of a blood pump rotor under the condition of human body movement.
Background
Due to the development of cardiac surgery and the shortage of heart transplant donors, for patients with moderate or severe heart failure, implanted blood pumps have become the mainstream trend of treating heart failure, and centrifugal magnetic suspension blood pumps are developed due to the advantages of small volume, small blood damage and the like. In order to realize the stable suspension control of the blood pump rotor, the stable operation of the centrifugal magnetic suspension blood pump motor under the complicated and changeable working conditions is necessary to be detected and used as the reference standard of the subsequent design. The device for testing the stability of the blood pump rotor under the condition of human body movement, which is provided under the background, can accurately and conveniently measure the collision condition of the rotor and the cavity of the centrifugal magnetic suspension blood pump motor under the working condition of human body movement, and the stability condition of the blood pump motor under different external movement environments can be determined by analyzing the relationship between the collision frequency and the acceleration angle speed.
Disclosure of Invention
The invention aims to provide a device for testing the stability of a blood pump rotor under the condition of human motion. The device can simulate the environment of the blood pump moving along with the human body in the working state, and can detect the running stability of the blood pump through collision.
The invention comprises a blood pump clamp, a six-axis motion attitude gyroscope sensor, a swing arm, a support table, a linear motor and the like; the blood pump clamp comprises a blood pump clamp base (4), an open slot pressing plate (5), a cam (6) and a plurality of connecting pieces; a groove designed according to the outline of the motor is arranged on the blood pump clamp base (4) for placing the motor.
The open slot pressing plate (5) is fixed between the upper surface of the cam (6) and the lug boss designed on the blood pump clamp base (4) through a bolt, the cam (6) is rotated to enable the lower surface of the cam to press a driving part of a blood pump motor, and the open slot pressing plate (5) is driven to press the upper surface of the blood pump, so that the limitation of three degrees of freedom including translation in the vertical direction and overturning in the horizontal direction is jointly completed; the plane of the blood cavity part of the blood pump motor, which is enabled by the rotating cam (6), is tightly attached to the side plane of the convex part on the blood pump clamp base (4), and the blood pump motor is matched with the circular groove in the blood pump clamp base (4) to jointly complete the limitation of three degrees of freedom in total on the rotation of the blood pump motor in the vertical direction and the translation of the blood pump motor in the horizontal direction.
The device can meet the simulation of the motion environment of the blood pump in a human body, the six-axis motion attitude gyroscope sensor is loaded on the base of the blood pump clamp, the information such as angular speed, acceleration and the like when the blood pump clamp and the blood pump move as a whole can be detected, and the rotation speed of the motor is read and then adjusted through computer software, so that the blood pump and the blood pump clamp are jointly under the appropriate motion condition.
The swing arm (3) can be selectively mounted; when the device is installed, the translation motion state of the human body can be approximately simulated due to the large radius; when the device is not installed, the rotating motion state of the human body can be simulated; the actual parameter values of the two motion states are obtained by a six-axis motion attitude gyroscope sensor and are adjusted through the rotating speed of a direct current motor.
Rubber pads are installed on the inner side of the blood pump clamp base (4) and below the open slot pressing plate (5), so that the surface scratch can be avoided while the blood pump is clamped tightly, and the vibration generated during the motion of the rotor can be isolated from the device generated by the operation of the simulation device.
Drawings
Fig. 1 is a structural schematic diagram of a device for simulating the translation state of a blood pump in a human body.
Fig. 2 is a schematic structural diagram of the device for simulating the rotation state of the blood pump in the human body.
Fig. 3 is a schematic diagram of a blood pump clamp structure.
Fig. 4 is a schematic structural diagram of a blood pump clamp base.
Fig. 5 is a structural schematic diagram of an open-slot platen in a blood pump clamp.
Fig. 6 is a schematic diagram of a cam structure in a blood pump clamp.
Detailed Description
The following non-limiting examples will allow those skilled in the art to more fully understand the present invention, but do not limit it in any way.
The device for simulating the kinematic characteristics of a blood pump in a human body according to the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.
The device for testing the stability of the blood pump rotor under the condition of human motion comprises a direct current motor (1), a supporting platform (2), a swing arm (3), a blood pump clamp base (4), an open slot pressing plate (5), a cam (6) and a plurality of connecting pieces. The mounting structure when it simulates a translation state in a human body is shown in fig. 1; the mounting structure when it simulates a turning state in a human body is shown in fig. 2.
As shown in fig. 3, the blood pump motor clamp is a schematic structural diagram, and includes a blood pump clamp base (4), an open slot pressing plate (5), a cam (6) and other connecting members. As shown in fig. 4, a groove (8) designed according to the outer contour of the motor driving part is arranged on the blood pump clamp (4) to place the stator part of the motor; the rotating cam (6) is used for pushing the blood pump motor to rotate, so that the plane on one side of the rotating cam is tightly attached to the side face designed on the blood pump clamp base (4), and the two structures together complete the clamping of the motor in the horizontal direction. As shown in figure 5, an open slot pressing plate (5) is fixed between the upper surface of a cam (6) and a bulge (7) on a blood pump clamp base (4) through bolts, the cam (6) is rotated to enable the lower surface of the cam to compress a driving part of a blood pump motor, the open slot pressing plate (5) is driven to compress the upper surface of the blood pump, and a rubber pad is designed below the open slot pressing plate (5) to prevent the upper surface of the blood pump from being scratched.
The device can meet the simulation of the motion environment of the blood pump in a human body, a six-axis motion attitude gyroscope sensor is loaded on the position of the groove (9) of the blood pump clamp base (4), information such as angular speed, acceleration and the like when the blood pump clamp and the blood pump move as a whole can be detected, the rotating speed of the direct current motor is read through computer software, the blood pump and the blood pump clamp are enabled to be under the appropriate motion condition together, and the maximum motion index of the human body in daily life activities is shown in table 1.
TABLE 1 maximum index of human body movement in activities of daily living
| Technical index | Parameter value |
| Maximum angular velocity | 10rad/s |
| Maximum acceleration | 3G |
| Maximum rocking radius | 1m |
The swing arm (3) can be selectively mounted; when the device is installed, the translation motion state of the human body can be approximately simulated due to the large radius; when not installed, the human body rotation motion state can be simulated.
Rubber pads are installed on the inner side of the blood pump clamp base (4) and below the open slot pressing plate (5), so that the surface scratch can be avoided while the blood pump is clamped tightly, and the vibration generated during the motion of the rotor can be isolated from the device generated by the operation of the simulation device.
At blood pump motor lower surface, the high accuracy vibration sensor is installed to the rubber pad upside, can be used for detecting the motor collision.
The blood pump motor drive line, the high-precision vibration sensor and the signal line of the six-axis movement attitude gyroscope sensor are led out from the groove (10) and are externally connected to an extracorporeal circulation test bed.
The protrusions (7), the grooves (8) and the grooves (10) on the blood pump clamp base (4) are designed according to the actual size of the motor, and the requirements of clamping and positioning are met. As shown in figure 3, the blood pump inlet pipeline is connected into the blood pump from the upper part of the groove (8) to the lower part, the blood pump outlet pipeline is connected out from the left lower part of the bulge (7), a circulation is formed at the blood pump clamp, and the whole movement and measurement cannot be influenced.
Claims (5)
1. The utility model provides a device for testing blood pump rotor stability under human motion condition which characterized in that: the device comprises a blood pump clamp, a six-axis motion attitude gyroscope sensor, a swing arm, a support table, a film vibration sensor, a direct current motor and the like; the blood pump clamp comprises a blood pump clamp base (4), an open slot pressing plate (5), a cam (6) and a plurality of connecting pieces; a groove designed according to the outline of the motor is arranged on the blood pump clamp base (4) for placing the motor.
2. The device for testing the stability of a blood pump rotor under conditions of human motion according to claim 1, characterized in that: the simulation of the motion environment of the blood pump in a human body can be met, the six-axis motion attitude gyroscope sensor is loaded on the base of the blood pump clamp, the information such as angular speed, acceleration and the like when the blood pump clamp and the blood pump move as a whole can be detected, and the rotation speed of the motor is read and then adjusted through computer software, so that the blood pump and the blood pump clamp are jointly under the appropriate motion condition.
3. The device for testing the stability of a blood pump rotor under conditions of human motion according to claim 1, characterized in that: the swing arm (3) can be selectively mounted; when the device is installed, the radius is large, and the translational motion state of a human body is simulated approximately; when the device is not installed, the rotating motion state of the human body is simulated; the actual parameter values of the two motion states are obtained by a six-axis motion attitude gyroscope sensor and are adjusted through the rotating speed of a motor.
4. The device for testing the stability of a blood pump rotor under conditions of human motion according to claim 1, characterized in that: rubber pads are installed on the inner side of a groove of the blood pump clamp base (4) and below the open groove pressing plate (5), so that the surface scratch can be avoided while the blood pump is clamped tightly, and vibration generated during the motion of the rotor can be isolated from a device generated by the operation of the simulation device.
5. The device for testing the stability of a blood pump rotor under conditions of human motion according to claim 4, characterized in that: a film vibration sensor is arranged between the rubber pad on the inner side of the groove of the blood pump clamp base (4) and the blood pump, and is tightly attached to the blood pump, so that the collision between a rotor and a cavity in the running process of the blood pump can be detected, and the detection index of stability is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388834.3A CN110848150A (en) | 2019-12-30 | 2019-12-30 | Device for testing stability of blood pump rotor under human motion condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388834.3A CN110848150A (en) | 2019-12-30 | 2019-12-30 | Device for testing stability of blood pump rotor under human motion condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110848150A true CN110848150A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911388834.3A Pending CN110848150A (en) | 2019-12-30 | 2019-12-30 | Device for testing stability of blood pump rotor under human motion condition |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010036815A2 (en) * | 2008-09-26 | 2010-04-01 | Launchpoint Technologies, Inc. | Magnetically-levitated blood pump with optimization method enabling miniaturization |
| EP2478935A2 (en) * | 2011-01-21 | 2012-07-25 | NeuroCardiac Innovations, LLC | Implantable cardiac devices with body orientation unit |
| CN202590032U (en) * | 2012-01-11 | 2012-12-12 | 上海理工大学 | External characteristic testing device for medical extracorporeal circulation centrifugal blood pump |
| JP2014008376A (en) * | 2012-07-03 | 2014-01-20 | Nikkiso Co Ltd | Pump connector |
| US20140298905A1 (en) * | 2013-04-05 | 2014-10-09 | Thoratec Corporation | Verification of magnetic balance for magnetically levitated impeller |
| CN106823028A (en) * | 2017-01-16 | 2017-06-13 | 哈尔滨理工大学 | A kind of blood pump suspended impeller axial shift measuring instrument and its dynamic testing method |
| WO2018031741A1 (en) * | 2016-08-12 | 2018-02-15 | Tc1 Llc | Devices and methods for monitoring bearing and seal performance |
| WO2018047969A1 (en) * | 2016-09-12 | 2018-03-15 | 日機装株式会社 | Blood purification device |
| WO2018158838A1 (en) * | 2017-02-28 | 2018-09-07 | 株式会社サンメディカル技術研究所 | Blood pump and blood pump adjusting method |
| CN109520454A (en) * | 2018-11-15 | 2019-03-26 | 哈尔滨理工大学 | A kind of special fixture for the measurement of blood pump rotor displacement |
| CN212536102U (en) * | 2019-12-30 | 2021-02-12 | 哈尔滨理工大学 | Device for testing stability of blood pump rotor under conditions of translation and rotation |
-
2019
- 2019-12-30 CN CN201911388834.3A patent/CN110848150A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010036815A2 (en) * | 2008-09-26 | 2010-04-01 | Launchpoint Technologies, Inc. | Magnetically-levitated blood pump with optimization method enabling miniaturization |
| EP2478935A2 (en) * | 2011-01-21 | 2012-07-25 | NeuroCardiac Innovations, LLC | Implantable cardiac devices with body orientation unit |
| CN202590032U (en) * | 2012-01-11 | 2012-12-12 | 上海理工大学 | External characteristic testing device for medical extracorporeal circulation centrifugal blood pump |
| JP2014008376A (en) * | 2012-07-03 | 2014-01-20 | Nikkiso Co Ltd | Pump connector |
| US20140298905A1 (en) * | 2013-04-05 | 2014-10-09 | Thoratec Corporation | Verification of magnetic balance for magnetically levitated impeller |
| WO2018031741A1 (en) * | 2016-08-12 | 2018-02-15 | Tc1 Llc | Devices and methods for monitoring bearing and seal performance |
| WO2018047969A1 (en) * | 2016-09-12 | 2018-03-15 | 日機装株式会社 | Blood purification device |
| CN106823028A (en) * | 2017-01-16 | 2017-06-13 | 哈尔滨理工大学 | A kind of blood pump suspended impeller axial shift measuring instrument and its dynamic testing method |
| WO2018158838A1 (en) * | 2017-02-28 | 2018-09-07 | 株式会社サンメディカル技術研究所 | Blood pump and blood pump adjusting method |
| CN109520454A (en) * | 2018-11-15 | 2019-03-26 | 哈尔滨理工大学 | A kind of special fixture for the measurement of blood pump rotor displacement |
| CN212536102U (en) * | 2019-12-30 | 2021-02-12 | 哈尔滨理工大学 | Device for testing stability of blood pump rotor under conditions of translation and rotation |
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