CN201308666Y - Artificial heart auxiliary device of conical rotor driven by external field - Google Patents
Artificial heart auxiliary device of conical rotor driven by external field Download PDFInfo
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- CN201308666Y CN201308666Y CNU2008202276247U CN200820227624U CN201308666Y CN 201308666 Y CN201308666 Y CN 201308666Y CN U2008202276247 U CNU2008202276247 U CN U2008202276247U CN 200820227624 U CN200820227624 U CN 200820227624U CN 201308666 Y CN201308666 Y CN 201308666Y
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Abstract
The utility model belongs to the technical filed of biomedical engineering, and relates to a blood pump auxiliary device, in particular to an artificial heart auxiliary device of implantable type conical spiral impeller rotor driven by external magnetic field and supported by magnetic bearing. The device is arranged in an alternating magnetic field, and comprises a small end shell (1) which is connected with blood vessels, a big end shell (4) and a middle shell (3), wherein the big end and the small end of the middle shell (3) are respectively sealedly connected with the small end shell (1) and the big end shell (4), a small end guide pulley (2) and a big end guide pulley (6) whose outer surfaces are provided with impellers are respectively fixedly installed in the small end shell (1) and the big end shell (4), an impeller rotor (5) is arranged in the space formed by the middle shell (3), the small end guide pulley (2) and the big end guide pulley (6), a shaft (11) is arranged in the impeller rotor (5), a permanent-magnet magnetic stripe (12) is fixedly installed between the impeller rotor (5) and the shaft (11), and the impeller rotor (5) has gaps with the small end guide pulley (2) and the big end guide pulley (6). The device effectively solves a series of technical problems which are difficult to overcome by traditional artificial assistance such as airproof infection caused by threading skin guide lines, biocompatibility and the like.
Description
Technical field
This utility model belongs to the biomedical engineering technology field, relates to a kind of blood pump auxiliary device, especially a kind of artificial heart auxiliary device that adopts external magnetic field to drive magnetic bearing supporting implantable cone helical runner rotor.
Background technology
Heart is a blood of human body circulation power source.Nowadays, cardiovascular disease has become and has caused human main causes of death.Although heart transplantation is the most effective means of cardiac of heavily endangering for the treatment of, be far longer than donor owing to wait for the quantity of heart transplantation receptor, cause all having every year a lot of patients dead in waiting for heart transplantation.In order to solve this difficult problem, the artificial heart auxiliary device has been suggested.The existing artificial heart auxiliary device in home and abroad is mainly based on axial blood pump, and most axial flow blood pumps are to provide energy by power and the pilot that passes through skin, cause problems such as receptor infection and biocompatibility easily owing to the sealing reason; The rotor of blood pump supports with mechanical bearing simultaneously, and the long-time running of blood pump very easily causes bearing wear and heating; The rotor of blood pump and runner different design close haemophysiology and flow and cause a series of difficult problems of haemolysis and thrombosis or the like.
Summary of the invention
In order to overcome the shortcoming of traditional artificial heart auxiliary device, this utility model provides a kind of outfield to drive cone rotor artificial heart auxiliary device, this apparatus structure compactness, collection drives and is controlled in one, has solved effectively owing to pass through the technical problem that the artificial auxiliary device of a series of tradition such as sealing infection that the skin lead causes and biocompatibility are difficult to overcome.
The purpose of this utility model is achieved through the following technical solutions: a kind of outfield drives cone rotor artificial heart auxiliary device, described device places alternating magnetic field, this device comprises the little end housing that links to each other with blood vessel, big end housing, intermediate case, the big end of intermediate case and small end are tightly connected with little end housing and big end housing respectively, fixedly mounting outer surface in little end housing and the big end housing respectively has the small end guide wheel of impeller and holds guide wheel greatly, in described intermediate case, in the space that small end guide wheel and big end guide wheel constitute vane rotor is set, in the described vane rotor axle is set, fixed installation permanent magnetism magnetic stripe between vane rotor and axle, described vane rotor and small end guide wheel and hold between the guide wheel gapped greatly.
As a kind of improvement of the present utility model, on described small end guide wheel and the big end guide wheel two-stage stairstepping circular groove is set respectively, fixedly mount the axial permanent magnetic bearer ring of axial charging and the radial permanent magnet outer race of radial magnetizing in the two-stage stairstepping circular groove respectively, the described small end guide wheel that is positioned at is opposite with the polarity of the axial permanent magnetic bearer ring of big end guide wheel; Described axle two ends are provided with footstalk, the radial permanent magnet bearing inner ring of fixed installation radial magnetizing on the footstalk, described radial permanent magnet bearing inner ring is positioned at the radial permanent magnet outer race, and opposite with the polarity of radial permanent magnet outer race, described radial permanent magnet bearing inner ring and axial permanent magnetic bearer ring, radial permanent magnet outer race are gapped between the two.
As a kind of improvement of the present utility model, described permanent magnetism magnetic stripe is made of 4 1/4 columnar permanent magnetism magnetic stripes, and radial magnetizing, and adjacent two polar N, S extreme direction are opposite.
As a kind of optimal way of the present utility model, described alternating magnetic field is formed by being arranged on external radially equally distributed some even number coils, and this coil is connected with the terminal of converter respectively.
Adopt this kind scheme, this utility model has realized that producing the external magnetic field driving by the external coil of Frequency Converter Control is contained in intravital cone helical runner rotor blood-pump, avoided owing to pass through the difficulty that a series of traditional blood pumps such as sealing infection that the skin lead causes and biocompatibility are difficult to overcome, special cone helical runner rotor axially and is directly upwards being realized magnetic suspension fully in this device body under the effect of Permanent-magnet bearing simultaneously, reduced that mechanical bearing brought because friction, wearing and tearing, haemolysis and thrombosis that heating causes can the normal blood of human body circulations of long term maintenance.By adopting the Frequency Converter Control coil electricity, regulate size of current and produce the remote permanent magnetism magnetic stripe that is contained in the intravital blood pump rotor that contactlessly drives of alternating magnetic field, this device can be implanted easily, need not the reuse lead and pass through skin, effectively avoided because infection and the biocompatibility issues that sealing causes; The high energy Permanent-magnet bearing makes the blood pump rotor radial and axially suspends fully, avoided because complication such as haemolysis that friction, wearing and tearing and the heating that mechanical bearing causes causes and thrombosis, the design of special cone helical runner makes rotor the least possible shearing erythrocyte in rotation, reduces the destruction to blood formed element; Simple in structure, collection drives and is controlled in one etc.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is done further concrete detailed explanation.
Fig. 1 drives cone rotor artificial heart auxiliary device cross-sectional view for the outfield;
Fig. 2 drives cone rotor artificial heart auxiliary device axial side view for the outfield;
Fig. 3 is the front view of big end guide wheel;
Fig. 4 is the left view of big end guide wheel;
Fig. 5 is the sketch map that permanent magnetism magnetic stripe and axle are installed relation;
Fig. 6 is the outline drawing of vane rotor.
The specific embodiment
External that this utility model provides drives cone rotor artificial heart auxiliary device and comprises small end shell 1, intermediate case 3, big end housing 4, small end guide wheel 2, holds guide wheel 6, vane rotor 5, permanent magnetism magnetic stripe 12, axial permanent magnetic bearer ring 7, radial permanent magnet bearing inner ring 8, radial permanent magnet outer race 9 and axle 11 to form greatly, as shown in Figure 1.This device is to be placed in the alternating magnetic field, and big end housing 4, small end shell 1 and intermediate case 3 are connected by fine thread, uniform three helical blades on the vane rotor 5, and its outer rim increases gradually, as shown in Figure 6.Hold guide wheel 6 greatly and above the small end guide wheel 2 guide vane is set, as shown in Figure 3, be separately fixed in big end housing 4 and the small end shell 1 by guide vane.Vane rotor 5 and intermediate case 3 radially have less radial clearance, and hold greatly between guide wheel 6, the small end guide wheel 2 less end play is arranged.Axle 11 is set in the vane rotor 5, fixed installation permanent magnetism magnetic stripe 12 between vane rotor 5 and axle 11, like this, the effect of the magnetic torque that in alternating magnetic field, receives by permanent magnetism magnetic stripe 12, the vane rotor 5 that will make rotates in the related device of this utility model, thereby makes blood to flow to big end housing 4 from small end shell 1.
The big end guide wheel 6 that is adopted in this utility model, small end guide wheel 2, big end housing 4, small end shell 1, intermediate case 3, rotor 5 all adopt light weight, non-magnetic conduction and the good titanium alloy material of biocompatibility to make, permanent magnetism magnetic stripe 12 is made of 1/4 cylindrical shape magnetic stripe of 4 radial magnetizings, the inner surface of permanent magnetism magnetic stripe 12 and axle 11 cooperate, N, the S extreme direction of every adjacent two blocks of magnetic stripes are opposite, the endoporus interference fit of permanent magnetism magnetic stripe 12 outer surfaces and vane rotor 5, as shown in Figure 5.
At the interior secondary groove that is provided with respectively of big end guide wheel 6 and small end guide wheel 2, as shown in Figure 1 and Figure 4, the groove the inside that the mode of radial permanent magnet outer race 9 by interference fit is installed in.The two ends of axle 11 are provided with footstalk, also by the mode of interference fit radial permanent magnet bearing inner ring 8 are installed on the footstalk.Radial permanent magnet bearing inner ring 8 and radial permanent magnet outer race 9 difference are excitation radially, and the two polarity has micro gap on the contrary and between the two.Vane rotor 5 can be realized radial suspension by the radial permanent magnet bearing inner ring 8 and the radial permanent magnet outer race 9 that are installed on the axle 11.
In the groove the inside of big end guide wheel 6 and small end guide wheel 2 respectively installation shaft to Permanent-magnet bearing ring 7, and also by the mode of interference fit, along the axial installation of axle 11, these two axial permanent magnetic bearer rings 7 are that axial excitation and polarity are opposite.Here, the also axial excitation of radial permanent magnet bearing inner ring 8 realizes axial suspension by the opposite vane rotor 5 that makes with axial permanent magnetic bearer ring 7 polarity of radial permanent magnet bearing inner ring 8 by the radial permanent magnet bearing inner ring 8 and the axial permanent magnetic bearer ring 7 that are installed on the axle 11.
Like this, vane rotor 5 just can be under the combined effect of radial permanent magnet bearing inner ring 8 and axial permanent magnetic bearer ring 7, radial permanent magnet outer race 9, realize vane rotor 5 at small end guide wheel 2, greatly hold between guide wheel 6 and the intermediate case 3 axially and radial suspension.
Therefore this utility model adopts the vane rotor 5 of cone-type spiral shape, and its outer rim increases gradually, and the fluid line velocity variations that is driven by the impeller of vane rotor 5 slowly and evenly, therefore the shearing force that causes is less; Minimizing can obviously reduce haemolysis and thrombosis phenomenon to the destruction of erythrocyte.
The employed alternating magnetic field of this utility model is to produce by being arranged on external radially equally distributed some even number coils 10, and this coil is connected with the terminal of converter 13 respectively, adopts 6 coils in the present embodiment, as shown in Figure 2.Utilize the ultimate principle of permagnetic synchronous motor, 6 coils 10 radially are evenly distributed on this device certain distance on every side, and 6 coils 10 are connected with converter 13 respectively, by the alternate conduction of converter 13 control coils 10, and produce alternating magnetic fields.Should be coupled with the magnetic field that the permanent magnetism magnetic stripe 12 that is installed in the intravital vane rotor 5 produces at the alternating magnetic field of external generation, consequent driving moment can realize the high speed rotating of vane rotor 5 in the body, thereby drives flowing of blood.
During use, after regulating converter 13 suitable current and voltage, coil 10 energisings can be produced alternating magnetic field, three uniform helical blade high speed rotating make the small end shell 1 interior vacuum that forms of this device on the vane rotor 5, blood is sucked from small end shell 1, blood enters in the groove of vane rotor 5 after shunting through the guide vane on the small end guide wheel 2 smoothly, and vane rotor 5 rotation is continuously constantly clamp-oned big end guide wheel 6 to blood, and flows out through excessive end housing 4.Under the effect of the guide vane on the big end guide wheel 6, blood is become comparatively stably and is flowed vertically by original high speed circular motion.By regulating the parameter of converter 13, can change the rotating speed of vane rotor 5, thereby regulate the output pressure and the flow of blood pump, to satisfy different patients' needs.
Rotating speed can reach 8000-12000 rev/min, makes the average output flow of blood pump 16 reach 5～8L/Min, average pressure 1.33 * 104Pa (100mmHg).
Claims (4)
1. an outfield drives cone rotor artificial heart auxiliary device, it is characterized in that: described device places alternating magnetic field, this device comprises the little end housing (1) that links to each other with blood vessel, big end housing (4), intermediate case (3), the big end of intermediate case (3) and small end are tightly connected with little end housing (1) and big end housing (4) respectively, fixedly mounting outer surface in little end housing (1) and the big end housing (4) respectively has the small end guide wheel (2) of impeller and holds guide wheel (6) greatly, in described intermediate case (3), in the space that small end guide wheel (2) and big end guide wheel (6) constitute vane rotor (5) is set, axle (11) is set in the described vane rotor (5), fixed installation permanent magnetism magnetic stripe (12) between vane rotor (5) and axle (11), gapped between described vane rotor (5) and small end guide wheel (2) and the big end guide wheel (6).
2. outfield according to claim 1 drives cone rotor artificial heart auxiliary device, it is characterized in that: on described small end guide wheel (2) and the big end guide wheel (6) two-stage stairstepping circular groove is set respectively, fixedly mount the axial permanent magnetic bearer ring (7) of axial charging and the radial permanent magnet outer race (9) of radial magnetizing in the two-stage stairstepping circular groove respectively, the polarity of the described axial permanent magnetic bearer ring (7) that is positioned at small end guide wheel (2) and big end guide wheel (6) is opposite; Described axle (11) two ends are provided with footstalk, the radial permanent magnet bearing inner ring (8) of fixed installation radial magnetizing on the footstalk, described radial permanent magnet bearing inner ring (8) is positioned at radial permanent magnet outer race (9), and opposite with the polarity of radial permanent magnet outer race (9), described radial permanent magnet bearing inner ring (8) and axial permanent magnetic bearer ring (7), radial permanent magnet outer race (9) are gapped between the two.
3. outfield according to claim 1 and 2 drives cone rotor artificial heart auxiliary device, and it is characterized in that: described permanent magnetism magnetic stripe (12) is made of 4 1/4 columnar permanent magnetism magnetic stripes, and radial magnetizing, and adjacent two polar N, S extreme direction are opposite.
4. outfield according to claim 3 drives cone rotor artificial heart auxiliary device, it is characterized in that: described alternating magnetic field is formed by being arranged on external radially equally distributed some even number coils (10), and this coil is connected with the terminal of converter (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202276247U CN201308666Y (en) | 2008-11-22 | 2008-11-22 | Artificial heart auxiliary device of conical rotor driven by external field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202276247U CN201308666Y (en) | 2008-11-22 | 2008-11-22 | Artificial heart auxiliary device of conical rotor driven by external field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201308666Y true CN201308666Y (en) | 2009-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202276247U Expired - Fee Related CN201308666Y (en) | 2008-11-22 | 2008-11-22 | Artificial heart auxiliary device of conical rotor driven by external field |
Country Status (1)
| Country | Link |
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| CN (1) | CN201308666Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446635A (en) * | 2013-09-09 | 2013-12-18 | 北京工业大学 | In vitro driving method of artificial heart pump |
| CN103691048A (en) * | 2013-12-31 | 2014-04-02 | 山东科技大学 | Micro therapy apparatus acting on target cells |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | 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 |
| 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 |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
-
2008
- 2008-11-22 CN CNU2008202276247U patent/CN201308666Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446635A (en) * | 2013-09-09 | 2013-12-18 | 北京工业大学 | In vitro driving method of artificial heart pump |
| CN103691048A (en) * | 2013-12-31 | 2014-04-02 | 山东科技大学 | Micro therapy apparatus acting on target cells |
| CN103691048B (en) * | 2013-12-31 | 2015-09-23 | 山东科技大学 | A kind of micro device acting on target cell |
| 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 |
| US12076545B2 (en) | 2018-02-01 | 2024-09-03 | 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 |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20101122 |