CN101269245B - Ultrasonic motor drive diaphragm type blood pump - Google Patents
Ultrasonic motor drive diaphragm type blood pump Download PDFInfo
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- CN101269245B CN101269245B CN2008100374042A CN200810037404A CN101269245B CN 101269245 B CN101269245 B CN 101269245B CN 2008100374042 A CN2008100374042 A CN 2008100374042A CN 200810037404 A CN200810037404 A CN 200810037404A CN 101269245 B CN101269245 B CN 101269245B
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Abstract
The invention provides an ultrasonic motor-driven diaphragm blood pump, which includes a shell, a rushing board, a transmission mechanism, an ultrasonic motor, annular blood bags, a blood inlet, a blood outlet, one-way valves, a driving module, and a monitoring and controlling module. The connection relationship is that: the shell and the rushing board are connected by the ultrasonic motor and the transmission mechanism, one side of the rushing board is connected with the annular blood bags, the other side of the annular blood bags is connected with the shell, the two annular blood bags are respectively provides with a blood inlet and a blood outlet; a built-in one-way valve is arranged in each blood opening to control the flowing direction of the blood, the monitoring and controlling module is connected with the driving module, the driving module is connected with the ultrasonic motor. The ultrasonic motor-driven diaphragm blood pump adopts the ultrasonic motor which is compact and flexible in structure and appearance, drive method, and transmission methods to implement the above built-in blood-pumping function directly, is ensured to be applicable to the short sufferers, and more applicable to the characteristics of Asian people.
Description
Technical field
The present invention relates to a kind of blood pump of technical field of medical instruments, specifically is a kind of auxiliary ultrasonic motor drive diaphragm type blood pump of ventricle that is used for.
Background technology
For the endstage cardiac insufficiency patient, existing clinically at present intra-arterial balloon pump (IABP) and ventricle tremulous pulse by-pass flow selections such as (V-AB) are assisted blood circulation.Wherein a kind of as the by-pass flow of ventricle tremulous pulse of ventricular assist device (VAD) can help the endstage cardiac insufficiency patient to tide over the critical period of waiting for heart donor; Perhaps, also can rely on the VAD of various implanteds to obtain the persistency support for the chronic cardiac patient.So far, the barrier film ventricular assist device that has entered medical market or technology maturation substantially can be divided into pneumatic and electronic diaphragm type ventricular assist device.The diaphragm type ventricular assist device provides pulsatile flow, comparatively meets physiological characteristics.In general, the diaphragm type ventricular assist device is simple in structure, maintenance and easy to use.The Pneumatic diaphragm ventricle is auxiliary, auxiliary blood pump is placed on external, passes skin with drainage tube, and blood pump is connected with blood vessel with patient's heart.Being limited in scope of patient activity like this, and pass the drainage tube of skin, cause infection easily.The membrane pump basic structure that electromagnetic motor drives is identical with the pneumatic diaphragm blood pump, but because the existence of motor, the blood pump size is bigger, can only be implanted in the bigger human body of body surface area.
Ultrasound electric machine is a kind of novel microdrive, and it is big to have output torque density, and response speed is fast, quiet running, and the compact conformation volume is little, does not need reducing gear per minute rotary speed and heart rate approaching, does not produce electromagnetic interference also not by the interference of electromagnetic field.Adopt ultrasonic motor drive diaphragm type blood pump, can dwindle the blood pump volume, make it implantable in the less human body of body surface area; Because rotating speed and natural heart rate are approaching, can reduce the destruction of blood pump simultaneously to blood.
Through the literature search of prior art is found, with United States Patent (USP): Blood Pump (blood pump), the patent No. 5,092,878 beat the design of type blood pump also with the ultrasound electric machine introducing wherein for a class of representative.This technology rotatablely moves as power source with ultrasound electric machine, and through the mechanical switch deviator, as cam or leading screw etc., the spinning movement that motor is exported is transformed into the linear reciprocation action, and realizes the function of pulsate pump blood with this.But ultrasound electric machine only drives barrier film blood bag at positive stroke in this invention, and revesal is not acting then.Therefore, the volume of blood pump is not fully utilized, limited the human implantable body surface area further dwindle or blood pump to the ilities of failure heart.
Summary of the invention
The present invention overcomes the problem that prior art exists, and provides a kind of Driven by Ultrasonic Motors, the ultrasonic motor drive diaphragm type blood pump of compact conformation.In the present invention, the Driven by Ultrasonic Motors push pedal between the both sides and shell of push pedal, has two annular blood bags respectively.The positive and negative stroke of push pedal so alternately pushes respectively and expands two annular blood bags, realizes relatively large blood pump output with less blood pump volume.This implantable diaphragm type blood pump can be used in the less relatively patient of stature.
The present invention is achieved by the following technical solutions, and ultrasonic motor drive diaphragm type blood pump of the present invention comprises: shell, push pedal, drive mechanism, ultrasound electric machine, annular blood bag, go into blood mouth, blood outlet, check valve, driver module, control module.Annexation is: be connected with drive mechanism by ultrasound electric machine between shell and the push pedal, push pedal one side connects annular blood bag, and annular blood bag opposite side connects shell.Have respectively into blood mouth, blood outlet on two annular blood bags, in each blood mouth built-in check valve is arranged, the flow direction of control blood.Control module connects driver module, and driver module connects ultrasound electric machine.
Described rotary ultrasonic motor comprises stator, rotor, precompression securing member.Stator is connected by the precompression securing member with rotor.
Described driver module comprises signal generator, photoisolator, power amplifier.Annexation is that signal generator connects photoisolator, connects power amplifier behind the photoisolator, and power amplifier connects ultrasound electric machine.The signal that signal generator produces is amplified to ultrasound electric machine required voltage and electric current through power amplifier, and photoisolator is realized electrical isolation between signal generator and power amplifier.
Described control module comprises flow transducer, feedback signal conditioning circuit, embedded controller.Annexation is: flow transducer detects the flow of blood pump output, is input to embedded controller, the embedded controller controls driver module through signal conditioning circuit.Control module is by the monitoring to blood pump, and control and driving module applies the driving signal to ultrasound electric machine, realizes blood-pumping function.
Described drive mechanism adopts existing sophisticated mechanism, and as leading screw, cam mechanism etc., its effect is that the motion of ultrasound electric machine output is adjusted, and realizes continuing pump blood.
Described check valve of going into blood mouth and blood outlet is made of the valve of bio-compatibility.
Drive mechanism is adjusted into the suitable linear reciprocating motion of push pedal with the outputting power that ultrasound electric machine produces.Annular blood bag go into the check valve that blood mouth and blood outlet all have control to flow to, two the annular blood bags that are connected in parallel respectively go into blood mouth and blood outlet, and be connected to depleted ventricle and large artery trunks.In push pedal during to the motion of direction, one of annular blood bag between push pedal and housing is subjected to the push pedal extruding like this, annular blood bag internal pressure raises, and the check valve that leads to the large artery trunks blood outlet is opened, and goes into the closed check valve of blood mouth, blood flows into large artery trunks, the blood-pumping function of accessory heart; Simultaneously, another annular blood bag expansion, annular blood bag internal pressure reduces, and the check valve of going into the blood mouth is opened, the blood outlet closed check valve, ventricle blood flows into annular blood bag by the blood mouth.When the push pedal adverse movement, the active force that two annular blood bags are subjected to is just in time opposite, and the blood bag of previous expansion was squeezed now, and previous extruded blood bag is expanded now.At the positive and negative stroke of push pedal, blood pump arrives large artery trunks with depleted ventricle blood transport constantly like this.Control module is by the monitoring to blood pump, and control and driving module applies the driving signal to ultrasound electric machine, realizes blood-pumping function, reaches the ventricle auxiliaring effect.
The present invention adopts flexible, the compact ultrasound electric machine technology of structure to realize above-mentioned implantable blood-pumping function, makes it can be used in the less relatively patient of stature, is applicable to the asian population feature in the time of better.The present invention combines the various advantages of ultrasound electric machine with the specific (special) requirements of implantable blood pump, it is low to have brought into play ultrasound electric machine speed, need not extra mechanism such as conversion, deceleration; Compact conformation, characteristics such as volume is little: the electromagnetic type motion device running of comparing high speed rotating is more releived, and is little to the blood damage; Under the different speed governing states, output torque is all bigger, and the simpler advantage such as accurately of action control has solved the subject matter of affiliated a few class blood pumps existence in the background technology.
Description of drawings
Fig. 1 is a structural front view of the present invention
Fig. 2 is a structure right view of the present invention
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Shown in Fig. 1-2, present embodiment comprises: push pedal 1, drive mechanism 2, rotary ultrasonic motor 3, first annular blood bag 4, the second annular blood bag 11, go into blood mouth 5, shell 6, blood outlet 7, check valve 8, driver module 9, control module 10.
Be connected with drive mechanism 2 by rotary ultrasonic motor 3 between housing 6 and the push pedal 1, push pedal 1 both sides connect the first annular blood bag 4 and second annular blood bag 11, the first annular blood bags 4 and second annular blood bag 11 opposite sides respectively and all are connected to shell 6.The check valve 8 that all has control to flow in each blood mouth is arranged respectively into blood mouth 5, blood outlet 7 on the first annular blood bag 4 and the second annular blood bag 11.Control module 10 connects driver module 9, and driver module 9 connects ultrasound electric machine 3.
In the present embodiment:
Described rotary ultrasonic motor 3 comprises stator, rotor, precompression securing member.Annexation is that stator is connected by the precompression securing member with rotor.Directly drive blood pump by low speed, big moment ultrasound electric machine, need not deceleration, mapping device, have cramped construction, flexibly the effect that drives.
Described low speed is meant with the suitable speed of human heart rate.
Described big moment can produce with the suitable pressure of human blood-pressure.
Described cramped construction can satisfy specific ventricle auxiliary in to kinemic requirement, comprising but be not limited to stroke volume, per minute output etc.
Described cramped construction can also be applicable to the requirement of human implantable, comprising but be not limited to have and can cooperate dirty given configuration and the action form of different implant sites periphery devices.
The described effect that drives flexibly, including, but not limited to by ultrasound electric machine flexibly version to the realization of pump blood.
Described check valve 8 of going into blood mouth 5 and blood outlet 7 is made of the valve of bio-compatibility.
Described driver module 9 comprises signal generator, photoisolator, power amplifier.Annexation is that signal generator connects photoisolator, connects power amplifier thereafter, connects ultrasound electric machine then.The signal that signal generator produces is amplified to described ultrasound electric machine required voltage and electric current through power amplifier; Photoisolator is realized electrical isolation between signal generator and power amplifier.
Described control module 10 comprises flow transducer, feedback signal conditioning circuit, embedded controller.Annexation is: flow transducer detects the flow of blood pump output, through signal conditioning circuit, is input to embedded controller.Embedded controller is by control signal generator, control and driving module.
Described drive mechanism 2 is lead-screw drive mechanism.
Lead-screw drive mechanism 2 is converted to push pedal 1 linear reciprocating motion with positive and negative the rotatablely moving of rotary ultrasonic motor 3 outputs.Two annular blood bags go into blood mouth 5 and blood outlet 7 contains check valve 8, two annular blood bags in parallel respectively go into blood mouth 5 and blood outlet 7, be connected respectively to depleted ventricle and large artery trunks then.When push pedal 1 during to 4 extruding of the first annular blood bag, first annular blood bag 4 internal pressures raise, and its check valve that leads to large artery trunks blood outlet 7 is opened, and goes into the closed check valve of blood mouth 5, and blood flows into large artery trunks, finishes the accessory heart blood-pumping function.In this process, second annular blood bag 11 volumes enlarge, and the bag internal pressure reduces, and the check valve of going into blood mouth 5 of the second annular blood bag 11 is opened, and the closed check valve of blood outlet 7, the check valve of ventricle blood through going into blood mouth 5 flow into the second annular blood bag 11.When push pedal 1 return, promptly to second annular blood bag 11 extruding, second annular blood bag 11 internal pressures raise, and its check valve that leads to large artery trunks blood outlet 7 is opened, and goes into the closed check valve of blood mouth 5, and blood flows into large artery trunks.In this process, first annular blood bag 4 volumes enlarge, and the bag internal pressure reduces, and the check valve of going into blood mouth 5 of the first annular blood bag 4 is opened, and the closed check valve of blood outlet 7, the check valve of ventricle blood through going into blood mouth 5 flow into the first annular blood bag 4.Circulation and so forth, control module 10 applies the driving signal by the 9 pairs of rotary ultrasonic motors 3 of Monitoring and Controlling driver module to pump Herba Wedeliae Wallichii number (pressure or and flow), realizes blood-pumping function, reaches the ventricle auxiliaring effect.
Present embodiment utilize ultrasound electric machine output torque density big, can with the relatively low speed of heartbeat frequency match, characteristics such as compact conformation is flexible, from driving principle, the basic aspect of type of belt drive, solved non-resistances such as centrifugal blood pump, axial blood pump and closed and keep shearing, the friction equivalent damage problem of the necessary fair speed rotation of certain blood pressure in the class blood pump blood; To implant property poor in order to solve above-mentioned all kinds of pneumatic hydraulic membrane pump, push-press type pulsate pump better, mechanism's complexity, and reliability is low etc., and problem provides new direction.
Claims (6)
1. one kind is used for the auxiliary ultrasonic motor drive diaphragm type blood pump of ventricle, it is characterized in that, comprise: shell, push pedal, drive mechanism, ultrasound electric machine, the first annular blood bag, the second annular blood bag, go into the blood mouth, blood outlet, check valve, driver module and control module, wherein: be connected with drive mechanism by ultrasound electric machine between shell and the push pedal, the push pedal both sides connect the first annular blood bag and the second annular blood bag respectively, the first annular blood bag and the second annular blood bag opposite side all are connected to shell, have respectively into the blood mouth on two annular blood bags, blood outlet, the flow direction that built-in check valve control blood is arranged in each blood mouth, control module connects driver module, and driver module connects ultrasound electric machine.
2. ultrasonic motor drive diaphragm type blood pump according to claim 1 is characterized in that, described ultrasound electric machine comprises stator, rotor, precompression securing member, and stator is connected by the precompression securing member with rotor.
3. ultrasonic motor drive diaphragm type blood pump according to claim 1, it is characterized in that, described driver module, comprise signal generator, photoisolator, power amplifier, signal generator connects photoisolator, connects power amplifier behind the photoisolator, power amplifier connects ultrasound electric machine, the signal that signal generator produces is amplified to ultrasound electric machine required voltage and electric current through power amplifier, and photoisolator is realized electrical isolation between signal generator and power amplifier.
4. ultrasonic motor drive diaphragm type blood pump according to claim 1, it is characterized in that, described control module, comprise flow transducer, feedback signal conditioning circuit, embedded controller, flow transducer detects the flow of blood pump output, is input to embedded controller through the feedback signal conditioning circuit, the embedded controller controls driver module, control module is by the monitoring to blood pump, and control and driving module applies the driving signal to ultrasound electric machine, realizes blood-pumping function.
5. ultrasonic motor drive diaphragm type blood pump according to claim 1 is characterized in that, described check valve of going into blood mouth and blood outlet is made of the valve of bio-compatibility.
6. ultrasonic motor drive diaphragm type blood pump according to claim 1 is characterized in that, described drive mechanism is lead screw transmission or cam mechanism, and the motion of ultrasound electric machine output is adjusted, and realizes continuing pump blood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100374042A CN101269245B (en) | 2008-05-15 | 2008-05-15 | Ultrasonic motor drive diaphragm type blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100374042A CN101269245B (en) | 2008-05-15 | 2008-05-15 | Ultrasonic motor drive diaphragm type blood pump |
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| CN101269245A CN101269245A (en) | 2008-09-24 |
| CN101269245B true CN101269245B (en) | 2011-07-20 |
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| CN2008100374042A Expired - Fee Related CN101269245B (en) | 2008-05-15 | 2008-05-15 | Ultrasonic motor drive diaphragm type blood pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104606730A (en) * | 2015-02-15 | 2015-05-13 | 李鸿雁 | Pulse-type ventricular assist instrument |
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| CN101905044B (en) * | 2010-08-06 | 2012-02-01 | 上海交通大学 | Diaphragm type pulsating blood pump driven by ultrasonic motor |
| CN102284092B (en) * | 2011-07-21 | 2013-12-25 | 上海交通大学 | Implantable pulsating-type ventricular assist blood pump |
| CN103055363B (en) * | 2013-01-22 | 2015-04-15 | 上海交通大学 | Vortex type implantable pulse ventricle assisting blood pump |
| CN103656770B (en) * | 2013-12-11 | 2015-10-14 | 上海交通大学 | Based on the artificial heart blood pump that minitype cylinder drives |
| CN105525367B (en) * | 2016-02-17 | 2018-08-31 | 苏州经贸职业技术学院 | The electrostatic spinning pressure spray apparatus and electrostatic spinning system of imitative atrial ventricle principle |
| JP7414529B2 (en) | 2017-06-07 | 2024-01-16 | シファメド・ホールディングス・エルエルシー | Intravascular fluid transfer devices, systems, and methods of use |
| WO2019094963A1 (en) | 2017-11-13 | 2019-05-16 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| CN107781147A (en) * | 2017-11-28 | 2018-03-09 | 广东商旅宝健康科技有限公司 | Electric aeration device |
| WO2019152875A1 (en) | 2018-02-01 | 2019-08-08 | 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 |
| EP4034192A4 (en) | 2019-09-25 | 2023-11-29 | Shifamed Holdings, LLC | Intravascular blood pump systems and methods of use and control thereof |
| CN113181547B (en) * | 2021-04-23 | 2022-03-18 | 清华大学 | Heart pump with ultrasonic thrombolysis function |
| CN114367032B (en) * | 2022-01-06 | 2023-07-21 | 中国科学院力学研究所 | Flexible diaphragm, electromagnetic driving bag type artificial heart and control method |
-
2008
- 2008-05-15 CN CN2008100374042A patent/CN101269245B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104606730A (en) * | 2015-02-15 | 2015-05-13 | 李鸿雁 | Pulse-type ventricular assist instrument |
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| CN101269245A (en) | 2008-09-24 |
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