CN1255383A - Integrated pneumoelectric blood pump and integrated pneumoelectric artificial heart - Google Patents
Integrated pneumoelectric blood pump and integrated pneumoelectric artificial heart Download PDFInfo
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- CN1255383A CN1255383A CN 99126700 CN99126700A CN1255383A CN 1255383 A CN1255383 A CN 1255383A CN 99126700 CN99126700 CN 99126700 CN 99126700 A CN99126700 A CN 99126700A CN 1255383 A CN1255383 A CN 1255383A
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Abstract
The invention relates to the integrated pneumoelectric blood pump and its artificial heart, which technically features that electromagnetic coil is arranged outside the foldable air bag to control its expansion and contraction, or said foldable air bag is arranged outside the electric motor to make it expande and contract by the push-pull of crankshaft. An internal elastic film is spread between two ends of air bag to divide the air bag into external cavity containing less gas and internal cavity as blood chamber through which the blood passes via two one-way flappers to become an integrated pneumoelectric blood pump. A negative-pressure sealed shell is arranged outside the blood pump to become an artificial heart. Its advantages are simple structure, small size, full transplant and synchronous contraction.
Description
This invention belongs to technical field of medical instruments.
Blood pump is a heart, one of visual plant of extracorporeal circulation in the trunk operation.At present, clinical practice mainly be roller pump and centrifugal pump, these two kinds of blood pump stable working state, workable, development and perfect time are long, have become mainstream model, but blood destroys greatly, and priming volume is many, cost an arm and a leg, type is big, and it is its main shortcoming that non-pulsatile flow mainly is provided.
Artificial heart comprises total artificial heart and ventricular assist device, is divided into pneumatic type and electrodynamic type by driving principle.Ideal artificial heart should make every effort to should be able to provide pulsatile flow near natural heart, and enough heart output are arranged, and can regulate as required; Make every effort to reach miniaturization, lightweight, low energy consumption, low noise, the full implantation during making; Blood compatibility is good, safety durable.And present artificial pneumatic heart, its driving device can not implant into body; The electrodynamic type artificial heart is at aspects such as miniaturization and left and right ventricles synchronous, exists conflictingly, also has shortcomings such as needing design ventricle compliant member in addition.(with reference to " the extracorporeal circulation perfusion is learned " Li Jiachun, Li Gongsong chief editor, chapter 3, artificial heart, [SBN7-80020-324-7]).
The purpose of this invention is for operation on heart provides more simple and safe extracorporeal circulation equipment, more meets physiological artificial heart for needs heart displacement and the auxiliary patient of ventricle provide.
Main contents are as follows:
This invention is a kind of distortion combination of the Pneumatic blood pump and the artificial pneumatic heart of application on November 22nd, 99, promptly is equivalent to the pump housing of air driven pump has directly been inserted gas hytor air bag inside, has saved gas connection pipe and pump housing shell.Please comparison diagram one, figure two, figure three understand.
Last time in the application explanation Special attention will be given to pump body structure of qigong formula blood pump, be the gas hytor has only represented to offer air bag with mechanical piston flexible power to gas actuating device.Mainly be the flexible power form of air bag have been done two kinds improve imagination specifically, thereby the pump housing of Pneumatic blood pump and gas actuating device can be combined into one, having constituted respectively has two kinds of characteristics gas-electricity one formula blood pump and two kinds of gas-electricity one formula artificial hearts.
These two kinds of improvement are: one, in that two above electromagnetism conversion coils are set on the collapsible airbag wall or between the airbag fold layer, absorb when utilizing the adjacent windings sense of current identical, the principle of repelling during current opposite in direction is made scalable air bag (figure two); Two, make collapsible air bag be positioned at motor global shape cover body track on every side, an end is fixed, by the crank pin push-and-pull other end generation telescopic variation (figure three) of motor.The flexible of two kinds of air bags will lean on the switching of the sense of current to finish, if a can is set outside air bag again, make to form the sealing negative pressure cavity between air bag and the shell, electric current shrinks power for air bag provides as long as then be interrupted in the same way, and its diastole is finished automatically by negative pressure.Can remove sense of current like this from and switch, also help implant into body.As figure two C, figure four A.Air bag after the improvement can be used as the driving device of Pneumatic blood pump equally, if design small and exquisite, can also be with air driven pump and connection tube implant into body, become drive-type artificial pneumatic heart in the body.
The gas-electricity one formula blood pump (figure two B) that is used as power with electromagnetism transition lines circle, its structure is: the outside is the power air bag, air bag two ends have the unidirectional import and export of blood, open between the import and export elastic force film is arranged, air bag is divided into film inner chamber and film exocoel, and the outer intracavity of the film between air bag and the elastic force film has a small amount of gas.
The gas-electricity one formula artificial heart (figure two C) that is used as power with electromagnetism transition lines circle, its structure is: the outside is a can, and the intermediate layer is the power air bag, is the elastic force inner membrance in the air bag, form two enclosed cavities between the three mutually, there are two unidirectional import and export of blood flow at three's common open place.Annular seal space between shell and power air bag is a negative pressure cavity, make air bag and in elastic force film self-relaxation when no magnetic field, the interior intermembranous annular seal space of air bag and elastic force has a small amount of gas can prevent that the elastic force inner membrance is absorbed in the air bag fold when contraction to form dead space.
With the gas-electricity one formula blood pump (figure three B) that direct current generator is used as power, its structure is: motor is positioned at the center, and motor is outward that air bag is positioned at shell as the shell of air bag tracks, and the one end is fixed, and the other end links to each other with the motor crank pin.The unidirectional import and export of blood flow are positioned at the bottom of air bag stiff end, and opening between balloon ends has the elastic force inner membrance, and a small amount of gas is arranged between inner membrance and air bag.
Its shell as the air bag tracks of gas-electricity one formula artificial heart (figure three C, figure four A, B) that is used as power with motor further extends up and down, and a motor sealing stagnant blood is flowed unidirectional import and export communicate with the external world, be negative pressure cavity between shell and air bag.Air bag is provided with one or two as required, and opening between two ends in the capsule has the elastic force inner membrance, and also there is a small amount of gas in inner membrance external seal chamber.
Gas-electricity one formula blood pump is compared with centrifugal pump with roller pump, and its advantage is that pulsatile flow can directly be provided, and structure is small and exquisite, and auxiliary device is few, has saved the space effectively, reduced preliminary filling and blood and destroyed, for long extracorporeal circulation provides bigger safety assurance; Price also can reduce significantly; Compare with Pneumatic blood pump, its advantage is structure-integrated, needn't gas actuating device be set in addition, has made things convenient for the installation of extracorporeal circulation equipment.
The advantage of gas-electricity one formula artificial heart: (1) has avoided artificial pneumatic heart must have the gas connection pipe road to pass the shortcoming that skin links to each other with body outer driving device.The shortcoming of the asynchronous contraction of left and right ventricles when the separate and drive system of the drive system of blood chamber is single about when (2) having avoided electrodynamic type artificial heart left and right ventricles synchronous.(3) dynamical system occupies little space, thereby can satisfy the stroke volume requirement of ventricle.(4) solved the problem that present electrodynamic type artificial heart relaxing period shortens relatively.(5) relatively imitated the compliance of natural heart, need not design in addition and comply with chamber and left and right sides heart separate system.(6) there is not sealing problem between motor rotation axis and the blood chamber.(7) can adapt to the geometry deformation of certain limit, help implanting.Friction reduces, and the prolongation that is beneficial to service life also can reduce the generation of heat.(8) help adapting in the future more advanced non-lead transmission of power mode.(9) characteristics of backlash current have been created condition for utilizing sinuatrial node Current Control heart pump.
Gas piston hytor, the blood pump pump housing and the artificial heart pump housing sketch map of the qigong formula artificial heart that figure one A, B, C are last time respectively to be introduced.
Figure two A, B, C are respectively that the air bag, gas-electricity one formula blood pump and the artificial gas of gas-electricity one that are used as power with electromagnetism transition lines circle are dirty.
The gas hytor that figure three A, B, C are used as power with motor respectively, gas-electricity one formula blood pump, gas-electricity one formula artificial heart schematic top plan view.
Figure four A, B, be gas-electricity one formula artificial heart schematic side view and the stereo dissected figure that is used as power with motor respectively.
Figure five is the gas-electricity one formula blood pump simulation drawings that are used as power with solenoid.
Realize the best way following points of this invention:
(1) material of parts such as shell and elastic force inner membrance should be taken into account the tissue blood compatibility on selecting, resistance to biodeterioration, physical and chemical stability, easily processing, easily sterilization, endurance, nontoxic, calcific deposit does not take place in no thermal source, does not upset all many-sides such as electric energy matter and magnetic shield.
(2) selection of coil and motor should be taken into account hot injury's problem of tissue, preferably adopts some high-tech material such as amorphous alloys, superconducting magnet etc.
(3) fabrication and installation of easily worn part will be considered easy replacing problem, and shell is made and will be considered fixation problem, preferably coating can with the fused material together of histiocyte growth.
(4) the at present existing more perfect design that is used for human body of the unidirectional flap valve of blood import and export can be used for reference use.
(5) the power control switch preferred design becomes can control as required and can utilize sinuatrial node electric current electrons excited switch.
(6) input of electric energy will be adopted the magnetic induction input mode as far as possible meeting on the basis of demand intensity, passes the infection that human body skin may cause to avoid lead.
Claims (4)
1. gas-electricity one formula blood pump and pneumoelectric integral type artificial heart are respectively the hemodynamics devices when being used for extracorporeal circulation and artificial heart displacement, can produce unidirectional pulsatile flow, the active force that it is characterized in that the power air bag acts on elastic force inner membrance in the air bag by the gas of a constant volume, makes blood produce unidirectional pulsation by unidirectional flap valve turnover inner membrance chamber and flows.
2. be the hemodynamics device that is used for extracorporeal circulation according to the described gas-electricity one formula of claim 1 blood pump, it is characterized in that by the power air bag, elastic force inner membrance and unidirectional flap valve are formed, the elastic force inner membrance is opened in balloon ends, air bag is separated film forming inner chamber and film exocoel, the outer intracavity of film has a small amount of gas, and an end of film inner chamber or two ends are equipped with two unidirectional flap valves.
3. be to be used for the artificial heart hemodynamics device in when displacement according to the described gas-electricity one formula of claim 1 artificial heart, it is characterized in that forming by shell, power air bag, elastic force inner membrance and unidirectional flap valve, between shell and power air bag is annular seal space, in it can be the negative pressure that air bag is stretched out automatically, and the composition mode of power air bag, the interior bullet of elastic force and unidirectional flap valve is identical with pneumatic integral type blood pump.
4. according to the described power air bag of claim 1, it is characterized in that outside collapsible air bag, solenoid being set, utilize electromagnetic force to make air bag flexible or air bag is arranged in the spherical track around the motor makes air bag flexible by the crank pin push-and-pull.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99126700 CN1115172C (en) | 1999-12-27 | 1999-12-27 | Integrated pneumoelectric blood pump and integrated pneumoelectric artificial heart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99126700 CN1115172C (en) | 1999-12-27 | 1999-12-27 | Integrated pneumoelectric blood pump and integrated pneumoelectric artificial heart |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1255383A true CN1255383A (en) | 2000-06-07 |
| CN1115172C CN1115172C (en) | 2003-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 99126700 Expired - Fee Related CN1115172C (en) | 1999-12-27 | 1999-12-27 | Integrated pneumoelectric blood pump and integrated pneumoelectric artificial heart |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394136A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Artificial heart system with double blood outgoing branch tubes |
| CN105517590A (en) * | 2013-06-21 | 2016-04-20 | 科万维公司 | Artificial ventricles |
| CN109793953A (en) * | 2019-01-17 | 2019-05-24 | 上海理工大学 | A kind of reciprocating blood pump of single-chamber of magnetic force and elastic force linkage |
| CN113368388A (en) * | 2021-06-21 | 2021-09-10 | 内蒙古工业大学 | Left ventricle auxiliary pulsation type blood pump |
| CN114367030A (en) * | 2022-01-06 | 2022-04-19 | 中国科学院力学研究所 | Sequential folding type artificial blood pump, artificial heart and control method thereof |
-
1999
- 1999-12-27 CN CN 99126700 patent/CN1115172C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105517590A (en) * | 2013-06-21 | 2016-04-20 | 科万维公司 | Artificial ventricles |
| CN103394136A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Artificial heart system with double blood outgoing branch tubes |
| CN109793953A (en) * | 2019-01-17 | 2019-05-24 | 上海理工大学 | A kind of reciprocating blood pump of single-chamber of magnetic force and elastic force linkage |
| CN109793953B (en) * | 2019-01-17 | 2021-11-02 | 上海理工大学 | Magnetic force and elastic force linked single-cavity reciprocating blood pump |
| CN113368388A (en) * | 2021-06-21 | 2021-09-10 | 内蒙古工业大学 | Left ventricle auxiliary pulsation type blood pump |
| CN113368388B (en) * | 2021-06-21 | 2022-12-02 | 内蒙古工业大学 | Left ventricle auxiliary pulsation type blood pump |
| CN114367030A (en) * | 2022-01-06 | 2022-04-19 | 中国科学院力学研究所 | Sequential folding type artificial blood pump, artificial heart and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN1115172C (en) | 2003-07-23 |
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