CN101015716A - Implanted non-contact minisize axial-flow blood pump - Google Patents
Implanted non-contact minisize axial-flow blood pump Download PDFInfo
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- CN101015716A CN101015716A CN 200710064288 CN200710064288A CN101015716A CN 101015716 A CN101015716 A CN 101015716A CN 200710064288 CN200710064288 CN 200710064288 CN 200710064288 A CN200710064288 A CN 200710064288A CN 101015716 A CN101015716 A CN 101015716A
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Abstract
The invention provides an implantable non-contact miniature axial flow blood pump for circulation support in patients with heart failure. The blood pump works based on non-contact magnetic coupling drive; and comprises a pump body and a drive mechanism in vitro. The pump body consists of pump housing, anterior end cover, rear end cover, anterior impeller, rear impeller, and permanent magnet as rotor. The drive mechanism in vitro consists of motor and permanent magnet fixed in the electrode axis, and works under field excitation to transfer the motor torque to the rotor and thus to rotate the impeller. The inventive blood pump can supply energy for long period of time, and can avoid problems of the conventional blood pump, such as poor biocompatibility and postoperative infection associated with guidewire penetration.
Description
Technical field
The present invention relates to a kind of implanted micro axial flow blood pump, can be used for the blood circulation of auxiliary failure heart, belong to the biomedical engineering technology field.
Background technology
World Health Organization's statistics shows that cardiovascular disease is first killer who threatens human health always, accounts for about 30% of the total death toll in the whole world, and the effective way of treatment heart failure in whole latter stage is heart transplantation or adopts the implanted ventricular assist device.Though heart transplantation has obtained very ten-strike, the heart donor problem is difficult to solve, and it is very important and urgent to develop the miniature blood pump of long-term implantable.The blood pump of clinical practice now is mainly based on axial-flow pump, and the flow performance of axial-flow pump is better than centrifugal pump, and bigger blood flow can be provided.In traditional blood pump system, adopt the interior energy storage mode of body mostly or provide energy by lead blood pump in body.The former since the development of high capacity cell be restricted, can't be for a long time in body blood pump energy is provided; The latter can bring a series of problems such as sealing and biocompatibility, and very easily produce postoperative infection because lead penetrates human body.
Summary of the invention
The present invention aims to provide a kind of implanted non-contact minisize axial-flow blood pump, be implemented in external in body blood pump provide the non-contact type of energy to drive, avoid owing to pass the difficulty that a series of traditional blood pumps such as sealing that the skin lead causes and biocompatibility are difficult to overcome, with the running of long term maintenance blood pump.
The objective of the invention is to be achieved through the following technical solutions: a kind of implanted non-contact minisize axial-flow blood pump, it is characterized in that: this blood pump is formed by being arranged on the intravital pump housing and being arranged on external driving device two parts, and the described pump housing comprises pump case, drive end bearing bracket, rear end cap, preceding stator, rear guide vane and rotor; External driving device is made up of motor and the permanent magnet that is arranged on the electrode axis; Described rotor is a permanent magnet, and remaining part is non-magnet_conductible material in the pump case and the pump housing.
The present invention compared with prior art, have the following advantages and the salience effect: owing to adopted the non-contact type magnetic coupling kind of drive, the pump housing can be implanted easily, drive control part is placed in external, need not lead is penetrated human body, on the one hand can be for a long time in body blood pump energy is provided, on the other hand, effectively avoided infection rate after abortion operation being reduced greatly owing to pass a series of problems such as sealing that the skin lead causes and biocompatibility.
Description of drawings
Fig. 1 is the structure diagram of implanted non-contact minisize axial-flow blood pump provided by the invention.
Among the figure: the 1-drive end bearing bracket; The 2-pump case; Stator blade before the 3-; Stator before the 4-; The 5-bearing; The 6-rotor; The 7-rotating shaft; The 8-rotor blade; 9-rear guide vane blade; The 10-rear guide vane; The 11-rear end cap; The 12-permanent magnet; The 13-motor.
The specific embodiment
Below in conjunction with accompanying drawing concrete structure of the present invention, principle and work process are elaborated.
As shown in Figure 1, implantable non-contact minisize axial-flow blood pump provided by the invention is formed by being arranged on the intravital pump housing and being arranged on external driving device two parts.The described pump housing comprises pump case 2, drive end bearing bracket 1, rear end cap 11, preceding stator 4, rear guide vane 10 and rotor 6; External driving device is made up of motor 13 and the permanent magnet 12 that is arranged on the electrode axis.Described rotor is a permanent magnet, and remaining part is non-magnet_conductible material in the pump case and the pump housing, as titanium alloy, because therefore titanium alloy magnetic conduction not can obtain bigger transfer of torque, and titanium alloy light weight and have good biocompatibility.Pump case 2 can adopt cylindrical, and utilizes drive end bearing bracket 2 and rear end cap 11 to seal; The front end of pump housing inside is preceding stator 4, be provided with the preceding stator blade 3 of guide functions above it, mid portion is a rotor 6, the material of rotor is a permanent magnet, afterbody is a rear guide vane 10, which is provided with the rear guide vane blade 9 of guide functions, by rotating shaft 7 three has been linked together, rotating shaft 7 is supported by bearing 5; The outer driving device of the pump housing is made up of motor 13 and the permanent magnet 12 that is arranged on the electrode axis, and the installation site of the outer permanent magnet 13 of pump should be corresponding with rotor 6, and the two distance should be in the 10-60mm scope.During blood pump work, external motor 13 drives external permanent magnets 12 and rotates, the N utmost point of permanent magnet is extremely relative with S, when rotating, permanent magnet can produce an alternating magnetic field, by the excitation effect transmission of torque of motor is given rotor 6 and driven the rotor rotation, rotating speed can reach 6000-8000 rev/min, thereby can produce the pressure reduction of 100-120mmHg, drives blood and circulates.
Claims (2)
1. implanted non-contact minisize axial-flow blood pump, it is characterized in that: this blood pump is formed by being arranged on the intravital pump housing and being arranged on external driving device two parts, and the described pump housing comprises pump case (2), drive end bearing bracket (1), rear end cap (11), preceding stator (4), rear guide vane (10) and rotor (6); External driving device is made up of motor (13) and the permanent magnet (12) that is arranged on the electrode axis; Described rotor is a permanent magnet, and remaining part is non-magnet_conductible material in the pump case and the pump housing.
2. according to the described implanted non-contact minisize axial-flow of claim 1 blood pump, it is characterized in that: remaining part adopts titanium alloy in the pump case and the pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710064288 CN101015716A (en) | 2007-03-09 | 2007-03-09 | Implanted non-contact minisize axial-flow blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710064288 CN101015716A (en) | 2007-03-09 | 2007-03-09 | Implanted non-contact minisize axial-flow blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101015716A true CN101015716A (en) | 2007-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710064288 Pending CN101015716A (en) | 2007-03-09 | 2007-03-09 | Implanted non-contact minisize axial-flow blood pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN101015716A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166379A (en) * | 2011-03-16 | 2011-08-31 | 北京工业大学 | Adaptive drive system of aortic blood pump position |
| CN103861162A (en) * | 2014-03-28 | 2014-06-18 | 北京工业大学 | Self-balanced stress type artificial heart pump shell |
| CN103977463A (en) * | 2014-06-06 | 2014-08-13 | 清华大学 | Implanted miniature antithrombus axial blood pump |
| CN104056314A (en) * | 2014-06-20 | 2014-09-24 | 冯森铭 | Implantable mini-type shaftless efficient heat transfer axial blood pump |
| CN104056312A (en) * | 2014-06-20 | 2014-09-24 | 冯森铭 | Implantable mini-type shaftless axial blood pump |
| CN105854097A (en) * | 2016-03-28 | 2016-08-17 | 彭远仪 | Functional artificial heart and driving method |
| CN106075621A (en) * | 2015-04-28 | 2016-11-09 | 傅风荣 | A kind of implantation blood pump in operative cardiac |
| CN111375098A (en) * | 2018-12-29 | 2020-07-07 | 上海微创心力医疗科技有限公司 | Percutaneous blood pump and rotor limit structure thereof |
| CN112689716A (en) * | 2018-10-18 | 2021-04-20 | 波士顿科学国际有限公司 | Blood pump shaft bearing |
-
2007
- 2007-03-09 CN CN 200710064288 patent/CN101015716A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166379A (en) * | 2011-03-16 | 2011-08-31 | 北京工业大学 | Adaptive drive system of aortic blood pump position |
| CN103861162A (en) * | 2014-03-28 | 2014-06-18 | 北京工业大学 | Self-balanced stress type artificial heart pump shell |
| CN103977463A (en) * | 2014-06-06 | 2014-08-13 | 清华大学 | Implanted miniature antithrombus axial blood pump |
| CN104056314A (en) * | 2014-06-20 | 2014-09-24 | 冯森铭 | Implantable mini-type shaftless efficient heat transfer axial blood pump |
| CN104056312A (en) * | 2014-06-20 | 2014-09-24 | 冯森铭 | Implantable mini-type shaftless axial blood pump |
| CN106075621A (en) * | 2015-04-28 | 2016-11-09 | 傅风荣 | A kind of implantation blood pump in operative cardiac |
| CN105854097A (en) * | 2016-03-28 | 2016-08-17 | 彭远仪 | Functional artificial heart and driving method |
| CN105854097B (en) * | 2016-03-28 | 2017-12-05 | 彭远仪 | A kind of feature artificial heart and driving method |
| CN112689716A (en) * | 2018-10-18 | 2021-04-20 | 波士顿科学国际有限公司 | Blood pump shaft bearing |
| CN111375098A (en) * | 2018-12-29 | 2020-07-07 | 上海微创心力医疗科技有限公司 | Percutaneous blood pump and rotor limit structure thereof |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |