CN101361994A - Artificial heart blood-pump capable of increasing blood pressure step by step - Google Patents
Artificial heart blood-pump capable of increasing blood pressure step by step Download PDFInfo
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- CN101361994A CN101361994A CNA2008102222218A CN200810222221A CN101361994A CN 101361994 A CN101361994 A CN 101361994A CN A2008102222218 A CNA2008102222218 A CN A2008102222218A CN 200810222221 A CN200810222221 A CN 200810222221A CN 101361994 A CN101361994 A CN 101361994A
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Abstract
The invention discloses a mechanical heart blood pump which boosts blood pressure steps by steps, pertaining to the technical field of biomedical engineering, relating to a mechanical heart blood pump for boosting blood pressure. The mechanical heart blood pump comprises a driving stator and a rotor; a controller connected with a driving stator provides a driving power source; the driving stator composed of annular coils is located in an interlayer composed of a cylindrical shell 13 and a tubular cavity 10; a supporting rotor comprises a head guide vane 1 and a tail guide vane 8; the head guide vane 1 is arranged in the front end of the tubular cavity 10, the tail guide vane 8 is arranged in the rear end of the tubular cavity 10 and a rotor between the head guide vane 1 and the tail guide vane 8 is also arranged in the tubular cavity 10. The mechanical heart blood pump is characterized in that: the mechanical heart blood pump is divided into a front grade and a rear grade, wherein, the front grade is a Grade 1 blood pump and the rear grade is a Grade 2 blood pump; the Grade 1 blood pump and the Grade 2 blood pump are respectively driven by the controller. The blood firstly flows through the Grade 1 blood pump to generate a blood pressure and then flows through the Grade 2 blood pump to generate another blood pressure; the two blood pressures are overlaid to reach a blood pressure needed by the human body, thus avoiding the problem that red blood cells are injured by the rotational speed increase of an impeller when a single blood pump works to obtain a relatively high blood pressure.
Description
Technical field
The invention belongs to the biomedical engineering technology field, relate to a kind of artificial heart blood pump that improves blood pressure step by step.
Background technology
Artificial heart can be divided into two kinds of positive displacement and vane types by its blood pump operation principle.Many moneys vane type artificial heart is because its relatively simple for structure and volume is small and exquisite has been applied to clinically, but simultaneously, the haemolysis problem is perplexing the safe in utilization of impeller blood.At present, impeller blood mostly is the blood pump of single-stage greatly, and a cover compensation blood pressure and the Blood Pump Module that blood flow is provided only arranged in the typical structure of this kind blood pump, therefore needs huge suction force to satisfy the requirement of blood pressure and blood flow rate.As the patent No. is in the patent document of US2006241335A1, and blood pump provides blood pressure and blood flow by an impeller, and the front end suction force is big, and the possibility that produces negative pressure is arranged, and can cause haemolysis to hemocyte like this.In addition, the high shear force that the high rotating speed of magnetic suspension rotor blood pump (application number 200710039971.7) causes is quite big for the destruction of erythrocyte, and the haemolysis performance issue that causes thus can't overcome.
Summary of the invention
The artificial heart blood pump that the purpose of this invention is to provide a kind of two-stage is guaranteeing under the prerequisite that erythrocyte is not destroyed the insufficient problem of blood pressure pressure reduction to solve.
To achieve these goals, the present invention has taked following technical scheme: the artificial heart blood pump that improves blood pressure step by step, comprise and drive stator and rotor, provide driving power by the controller that is connected with the driving stator, the driving stator that loop coil constitutes is positioned at the interlayer of cylinder blanket 13 and tubular inner chamber 10 formations, the one end sealing of shell 13, the other end is by annular end cap 11 sealings; The guide vane that is positioned at inner chamber 10 front ends 1 and the tail guide vane 8 that is positioned at inner chamber 10 rear portions that contain support rotor in the inner chamber 10, and the rotor between a guide vane 1 and tail guide vane 8; Its rotor is an impeller; And be provided with rectification tail cone 9 in inner chamber 10 rear ends, it is characterized in that: this artificial heart blood pump is divided into front and back stages, and prime is the one-level blood pump, comprises one-level impeller 3, one-level driving stator 13; The back level is the secondary blood pump, comprises sencond stage impeller 5, secondary drive stator 12; Guide vane 4 in being provided with between one-level impeller 3 and sencond stage impeller 5 as the tail guide vane 8 of one-level blood pump, simultaneously as the guide vane 1 of secondary blood pump, and is used to support one-level impeller 3 and sencond stage impeller 5; One-level drives stator 13 and secondary drive stator 12 and is driven respectively by controller, and guarantees the power of the power of one-level blood pump greater than the secondary blood pump.
For excessive swabbing does not appear in blood circulation, require the power of one-level blood pump to be greater than the power of secondary blood pump.One-level drives the coil turn of the coil turn of stator 13 greater than secondary drive stator 12 among the present invention, and the length of one-level impeller 3 is greater than the length of sencond stage impeller 5.Like this, when controller provided same control signal for two coils that drive stators, the power of one-level blood pump can be simplified this device like this greater than the power of secondary blood pump.
The one-level impeller 3 and the sencond stage impeller 5 of this artificial blood pump are enclosed within on the fixed axis 7 that is fixed on a guide vane 1, middle guide vane 4 and tail guide vane 8 central axis by one-level bearing 2 and secondary bearing 6 respectively.And one-level impeller 3 and sencond stage impeller 5 and middle guide vane 4 and tail guide vane 8 adopt helical blade, and the hand of spiral of one-level impeller 3 and sencond stage impeller 5 is opposite with the hand of spiral of middle guide vane 4 and tail guide vane 8.
Similar with one-level blood pump and secondary blood pump, this artificial heart pump can be provided with the above multistage blood pump of two-stage.
The invention has the beneficial effects as follows: 1) owing to adopt the above blood pump scheme of two-stage, can reach and meet the numerical value that human body requires at the blood pressure pressure reduction between import that makes blood pump under the prerequisite that does not improve rotor speed and the inlet, avoid the too high destruction to erythrocyte of causing of rotor speed.2) adopt fixed axis, impeller rotates on fixed axis, experiment showed, the resistance that helps reducing pump like this.
Description of drawings
Fig. 1 improves the structural representation of the artificial heart blood pump of blood pressure step by step for the present invention
Among the figure: 1 a, guide vane, 2, the one-level bearing, 3, the one-level impeller, 4, middle guide vane, 5, sencond stage impeller, 6, secondary bearing, 7, fixed axis, 8, the tail guide vane, 9, the rectification tail cone, 10, inner chamber, 11, end cap, 12, the secondary drive stator, 13, one-level drives stator, 14, shell.
The specific embodiment
As shown in Figure 1, the artificial heart blood pump that improves blood pressure step by step disclosed by the invention mainly comprises shell 13 and inner chamber 10 two parts, and shell 13 and inner chamber 10 are all cylindric, adopts medical titanium alloy TC4 material.Shell 13 is enclosed within inner shell and forms interlayer outward, places stator coil in the interlayer; Shell 13 1 ends are tightly connected with annular side plate and inner chamber 10, and the other end is tightly connected by annular end cap 11 and inner chamber 10.Placement head guide vane 1, one-level impeller 3, middle guide vane 4, sencond stage impeller 5, tail guide vane 8, rectification tail cone 9 successively in the inner chamber 10; Guide vane 1, middle guide vane 4, tail guide vane 8 are fixed with internal chamber wall; Be fixed with fixed axis 7 on the axial line of a guide vane 1 and middle guide vane 4, middle guide vane 4 and tail guide vane 8, one-level impeller 3 and sencond stage impeller 5 are enclosed within on the fixed axis 7 by one-level bearing 2 and secondary bearing 6 respectively.The blade of guide vane 1 is the 2-4 sheet, adopts the straight sheet along interior cavity direction; The blade of one-level impeller 3, middle guide vane 4, sencond stage impeller 5, tail guide vane 8 is the helical form (see figure 1), and the hand of spiral of one-level impeller 3 and sencond stage impeller 5 is opposite with the hand of spiral of middle guide vane 4 and tail guide vane 8.The tail end of inner chamber 10 is a rectification tail cone 9, and rectification tail cone 9 is fixed on the tail guide vane 8.
Evenly be embedded with permanent magnet in one-level impeller 3 and the sencond stage impeller 5 in the usual way, when stator coil and controller are connected and the effect of electrode stator make wheel rotation.One-level impeller 3 and sencond stage impeller 5 changes and adopts medical titanium alloy TC4 material, and the diameter of fixed axis 7 is less than half of the own diameter of impeller, and the thickness of blade is no more than 1 millimeter in the impeller.Stator coil is a three-phase coil, and controller has three-phase current type PWM control function.
For excessive swabbing does not appear in blood circulation, require the power of one-level blood pump to be greater than the power of secondary blood pump.One-level drives the coil turn of the coil turn of stator 13 greater than secondary drive stator 12 among the present invention, correspondingly the length of one-level impeller 3 is greater than the length of sencond stage impeller 5, like this, when controller provides same control signal for two coils that drive stators, the power of one-level blood pump can be simplified this device like this greater than the power of secondary blood pump.Certainly, controller also can provide different control signals for the coil that one-level drives stator 13 and secondary drive stator 12, can adjust the power of two blood pumps so respectively.
During the work of this device, the blood one-level blood pump of at first flowing through produces a blood pressure, produces a blood pressure again by the secondary blood pump again, and two blood pressures stack up and can reach the blood pressure that human body needs.Increase the problem of the damage erythrocyte that wheel speed causes when having avoided single-stage pump work like this in order to reach higher blood pressure.In order further to reduce destruction to erythrocyte, promptly reduce the rotating speed of blood pump, can adopt the blood pressure that more multistage blood pump reaches to be needed.The structure of blood pumps at different levels with introduce above identical, control respectively by controller.
Claims (6)
1. improve the artificial heart blood pump of blood pressure step by step, comprise and drive stator and rotor, provide driving power by the controller that is connected with the driving stator, the driving stator that loop coil constitutes is positioned at the interlayer of cylinder blanket (13) and tubular inner chamber (10) formation, the one end sealing of shell (13), the other end is sealed by annular end cap (11); Contain a guide vane (1) that is positioned at inner chamber (10) front end of support rotor in the inner chamber (10) and be positioned at the tail guide vane (8) at inner chamber (10) rear portion, and be positioned at the rotor between a guide vane (1) and the tail guide vane (8); Its rotor is an impeller; And be provided with rectification tail cone (9) in inner chamber (10) rear end, it is characterized in that: this artificial heart blood pump is divided into front and back stages, and prime is the one-level blood pump, comprises one-level impeller (3), one-level driving stator (13); The back level is the secondary blood pump, comprises sencond stage impeller (5), secondary drive stator (12); Between one-level impeller (3) and sencond stage impeller (5), be provided with middle guide vane (4),,, and be used to support one-level impeller (3) and sencond stage impeller (5) simultaneously as the guide vane (1) of secondary blood pump as the tail guide vane (8) of one-level blood pump; One-level drives stator (13) and secondary drive stator (12) is driven respectively by controller, and guarantees the power of the power of one-level blood pump greater than the secondary blood pump.
2. the artificial heart blood pump that improves blood pressure step by step according to claim 1, it is characterized in that: described one-level drives the coil turn of the coil turn of stator (13) greater than secondary drive stator (12), and the length of one-level impeller (3) is greater than the length of sencond stage impeller (5), and controller can be exported identical control signal and drive stator (13) and secondary drive stator (12) to one-level at this moment.
3. the artificial heart blood pump that improves blood pressure step by step according to claim 1 is characterized in that: described one-level impeller (3) is enclosed within on the fixed axis (7) that is fixed on a guide vane (1), middle guide vane (4) and tail guide vane (8) central axis by one-level bearing (2).
4. the artificial heart blood pump that improves blood pressure step by step according to claim 1 is characterized in that: described sencond stage impeller (5) is enclosed within on the fixed axis (7) that is fixed on a guide vane (1), middle guide vane (4) and tail guide vane (8) central axis by secondary bearing (6).
5. according to each described artificial heart blood pump that improves blood pressure step by step among the claim 1-4, it is characterized in that: described one-level impeller (3) and sencond stage impeller (5) and middle guide vane (4) and tail guide vane (8) adopt helical blade, and the hand of spiral of one-level impeller (3) and sencond stage impeller (5) is opposite with the hand of spiral of middle guide vane (4) and tail guide vane (8).
6. the artificial heart blood pump that improves blood pressure step by step according to claim 1 is characterized in that: similar with one-level blood pump and secondary blood pump, this artificial heart blood pump can be provided with multistage blood pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102222218A CN101361994B (en) | 2008-09-12 | 2008-09-12 | Artificial heart blood-pump capable of increasing blood pressure step by step |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102222218A CN101361994B (en) | 2008-09-12 | 2008-09-12 | Artificial heart blood-pump capable of increasing blood pressure step by step |
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| CN101361994A true CN101361994A (en) | 2009-02-11 |
| CN101361994B CN101361994B (en) | 2010-11-10 |
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| CN2008102222218A Expired - Fee Related CN101361994B (en) | 2008-09-12 | 2008-09-12 | Artificial heart blood-pump capable of increasing blood pressure step by step |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513545B (en) * | 2009-04-03 | 2011-07-13 | 北京工业大学 | Multi-mode ventricle auxiliary blood pump controller |
| US8690749B1 (en) | 2009-11-02 | 2014-04-08 | Anthony Nunez | Wireless compressible heart pump |
| CN104564694A (en) * | 2014-12-26 | 2015-04-29 | 江苏大学 | Compact axial flow pump |
| CN107050543A (en) * | 2017-05-04 | 2017-08-18 | 浙江理工大学 | A kind of microminiature micro-centrifugal blood pump with self-regulation blade |
| CN108744102A (en) * | 2018-07-04 | 2018-11-06 | 威海威高血液净化制品有限公司 | The interior enhanced dialyzer of filtration |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| CN112312835A (en) * | 2018-06-11 | 2021-02-02 | 苏黎世大学 | Blood pump for mechanical circulatory support of patients with squareness |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| CN114177516A (en) * | 2021-12-22 | 2022-03-15 | 江苏大学 | High-flow two-stage catheter pump for left ventricle assistance and using method thereof |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| CN115779257A (en) * | 2022-11-15 | 2023-03-14 | 北京航空航天大学 | Novel intervention catheter pump |
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
-
2008
- 2008-09-12 CN CN2008102222218A patent/CN101361994B/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513545B (en) * | 2009-04-03 | 2011-07-13 | 北京工业大学 | Multi-mode ventricle auxiliary blood pump controller |
| US8690749B1 (en) | 2009-11-02 | 2014-04-08 | Anthony Nunez | Wireless compressible heart pump |
| CN104564694A (en) * | 2014-12-26 | 2015-04-29 | 江苏大学 | Compact axial flow pump |
| CN107050543B (en) * | 2017-05-04 | 2023-07-04 | 浙江理工大学 | Microminiature centrifugal blood pump with self-adjusting blades |
| CN107050543A (en) * | 2017-05-04 | 2017-08-18 | 浙江理工大学 | A kind of microminiature micro-centrifugal blood pump with self-regulation blade |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11229784B2 (en) | 2018-02-01 | 2022-01-25 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| CN112312835A (en) * | 2018-06-11 | 2021-02-02 | 苏黎世大学 | Blood pump for mechanical circulatory support of patients with squareness |
| CN108744102A (en) * | 2018-07-04 | 2018-11-06 | 威海威高血液净化制品有限公司 | The interior enhanced dialyzer of filtration |
| 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 |
| CN114177516A (en) * | 2021-12-22 | 2022-03-15 | 江苏大学 | High-flow two-stage catheter pump for left ventricle assistance and using method thereof |
| CN115779257A (en) * | 2022-11-15 | 2023-03-14 | 北京航空航天大学 | Novel intervention catheter pump |
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| Publication number | Publication date |
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| CN101361994B (en) | 2010-11-10 |
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Granted publication date: 20101110 Termination date: 20160912 |