CN203971002U - A kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart - Google Patents
A kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart Download PDFInfo
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- CN203971002U CN203971002U CN201420334765.4U CN201420334765U CN203971002U CN 203971002 U CN203971002 U CN 203971002U CN 201420334765 U CN201420334765 U CN 201420334765U CN 203971002 U CN203971002 U CN 203971002U
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Abstract
The utility model discloses a kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart, comprise sleeve, the pump housing, drive coil, the pump housing comprises pilot blade, rotor, rear guide vane, rotor comprises rotor blade, permanent magnet and be arranged on the protruding hemisphere of two ends of rotor end, on pilot blade and rear guide vane, be provided with the recessed hemisphere corresponding with protruding hemisphere, pilot blade and rear guide vane are fixed to respectively the two ends of sleeve inner, the protruding hemisphere of two ends of rotor respectively with pilot blade, the recessed hemisphere of rear guide vane coordinates formation hemisphere supporting construction, semiglobe contact area is little, gap is little, the life-span, thereby the long tradition that solved had the life-span of shaft type axial-flow pump short, gap location hematoclasis and the serious problem of blood coagulation phenomenon, and this utility model is because concavo-convex hemispheric design can guarantee rotor and front, rear guide vane contact position is subject to same wearing and tearing, and then still can pass through semiglobe support rotor, therefore the service life that can improve pump.
Description
Technical field
This utility model relates to a kind of axial flow blood pump, particularly a kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart.
Background technology
World Health Organization's statistics demonstration, cardiovascular disease is the first killer who threatens human health always, accounts for 30% left and right of the total death toll in the whole world, the effective way for the treatment of heart failure in latter stage at end is heart transplantation or adopts implanted ventricular assist device.Although heart transplantation has obtained very ten-strike, heart donor problem is difficult to solve, and develops long-term implantable Small blood pump very important and urgent.The blood pump of clinical practice now mainly be take axial-flow pump as main, and the flow performance of axial-flow pump is better than centrifugal pump, and larger blood flow can be provided.The flow field of blood pump inside is very complicated, and the internal structure of blood pump has a significant impact the efficiency of the flow resistance of blood and blood pump, and hemocyte relatively also can break and cause haemolysis under high shear stress environment in blood pump.Due to the existence that has shaft type axial-flow pump in pilot blade and rotor contact area and rear guide vane and gap, rotor contact area, cause gap location to have amount of heat to produce and shear stress larger, gap location is the major part that blood coagulation occurs, thereby patient's life is formed greatly and threatened, and therefore a kind of axial-flow pump of the generation that can reduce gap location blood coagulation is extremely important.
Summary of the invention
In order to overcome the deficiencies in the prior art, this utility model provides a kind of long service life and can reduce the destruction of hemocyte and the miniature shaftless axial flow blood pump of implantable that blood coagulation forms.
This utility model solves the technical scheme that its technical problem adopts:
Be applied to a hemisphere supporting construction axial flow blood pump for artificial heart, comprise sleeve, be arranged on the pump housing in sleeve and be arranged on the drive coil outside sleeve, the described pump housing comprises the pilot blade that is positioned at sleeve Inner Front End, be positioned at the rotor at sleeve middle part, and the rear guide vane that is positioned at sleeve afterbody, described rotor comprises rotor blade, permanent magnet and be arranged on the protruding hemisphere of two ends of rotor end, on described pilot blade, be provided with pilot blade blade, on described rear guide vane, be provided with rear guide vane blade, on described pilot blade and rear guide vane, be provided with the recessed hemisphere corresponding with protruding hemisphere, described pilot blade and rear guide vane are fixed to respectively the two ends of sleeve inner, the protruding hemisphere of described two ends of rotor respectively with pilot blade, the recessed hemisphere of rear guide vane coordinates formation hemisphere supporting construction, with supporting and location rotor.
Described two ends of rotor is also respectively arranged with front pyramidal structure, rear pyramidal structure.
Described permanent magnet is embedded in internal rotor, and the structure of the described pump housing except permanent magnet all adopts titanium alloy material to make.
The leading portion of described rotor blade, the normal direction of rotor blade approaches the axis direction of rotor, and by the front end of rotor to rear end, the normal direction of described rotor blade turns to circumferentially gradually.
The beneficial effects of the utility model are: 1, before and after traditional axial-flow pump, stator is larger with rotor contact area, thereby and this utility model has reduced the destruction of cell and the formation of blood coagulation owing to having reduced the area of front and back stator and rotor contact position; 2, the traditional type axial-flow pump life-span limited at axle wrist place easily wearing and tearing cause the life-span of the whole pump housing to weaken, and this utility model is because concavo-convex hemispheric design can guarantee that contact position is subject to same wearing and tearing, and then still can pass through semiglobe support rotor, the service life that therefore can improve pump; 3, traditional axial flow pump is because the gap of front and back stator and rotor contact position more easily damages and easily form blood coagulation to hemocyte, and this utility model is because gap can guarantee enough little, entering of hemocyte can be avoided, therefore the destruction of hemocyte and the formation of blood coagulation can be reduced.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is structure diagram of the present utility model;
Fig. 2 is the structure chart of pump housing part;
Fig. 3 is the pilot blade structure chart of the pump housing;
Fig. 4 is the part-structure figure of the rotor of the pump housing;
Fig. 5 is the rear guide vane structure chart of the pump housing;
Detailed description of main elements: 1-pilot blade blade; 2-rotor blade; 3-rear guide vane blade; 4-pilot blade; 5-rotor; 6-rear guide vane; The protruding hemisphere of 7-; The recessed hemisphere of 8-; Pyramidal structure before 9-; Pyramidal structure after 10-; 11-permanent magnet; 12-drive coil, 13-sleeve.
The specific embodiment
Referring to figs. 1 through Fig. 5, Fig. 1 to Fig. 5 is the structural representation of a specific embodiment of this utility model, as shown in the figure, a kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart, comprises sleeve 13, is arranged on the pump housing in sleeve 13 and is arranged on the drive coil 12 outside sleeve 13, the described pump housing comprises the pilot blade 4 that is positioned at sleeve 13 Inner Front End portions, be positioned at the rotor 5 at sleeve 13 middle parts, and the rear guide vane 6 that is positioned at sleeve 13 afterbodys, described rotor 5 comprises rotor blade 2, permanent magnet 11, front pyramidal structure 9, rear pyramidal structure 10, protruding hemisphere 7, described front pyramidal structure 9, rear pyramidal structure 10 arranges respectively rotor 5 two ends, described protruding hemisphere 7 disposes two, and be separately positioned on front pyramidal structure 9, the end of rear pyramidal structure 10, on described pilot blade 4, be provided with pilot blade blade 1, on described rear guide vane 6, be provided with rear guide vane blade 3, on described pilot blade 4 and rear guide vane 6, be provided with the recessed hemisphere 8 corresponding with protruding hemisphere 7, described pilot blade 4 and rear guide vane 6 are fixed to respectively the two ends of sleeve 13 inside, the protruding hemisphere 7 at described rotor 5 two ends respectively with pilot blade 4, the recessed hemisphere 8 of rear guide vane 6 coordinates formation hemisphere supporting construction, with supporting and location rotor 5.
Described permanent magnet 11 is embedded in rotor 5 inside, in the pump housing, remaining part is non-magnet_conductible material, as titanium alloy, because titanium alloy is magnetic conduction not, therefore can obtain larger transfer of torque, and titanium alloy quality is light and have good biocompatibility, certainly in implementation process, also can adopt alloy material or other novel non-magnet_conductible materials such as niobium, tantalum; Described sleeve 13 can adopt cylindrical; The front end of pump body has been the pilot blade 4 of guide functions, mid portion is rotor 5, and afterbody is rear guide vane 6, by sleeve 13, three is linked together, the semiglobe that rotor 5 is comprised of protruding hemisphere 7, recessed hemisphere 8 respectively supports, and forms a shaftless rotor supports location structure.
The leading portion of rotor blade 2, the normal direction of rotor blade 2 approaches axis direction very much, then rotor blade 2 normal direction turn to circumferentially gradually, this design can make blood enter after rotor region, its circumferential speed is promoted gradually, and pressure slow decreasing, avoids pressure to reduce suddenly the cavitation phenomena causing, thereby make blade there is longer service life, and reduce the destruction to hemocyte.
Rotor 5 is connected by semiglobe with forward and backward stator 4,6, thereby semiglobe contact area is little, gap is little, the life-span longly solved that tradition has the life-span of shaft type axial-flow pump short, gap location hematoclasis and the serious problem of blood coagulation phenomenon.
And this utility model is subject to same wearing and tearing because the design of concavo-convex hemispheric can guarantee rotor 5 and forward and backward stator 4,6 contact positions, and then still can pass through semiglobe support rotor, the service life that therefore can improve pump.
Drive coil 12 adopts stalloy solenoid, be arranged on outside sleeve, size of current and the direction by controller, controlled in Electromagnetic Drive coil produce alternating magnetic field driving rotor, rotating speed can reach 11000-13000 rev/min, thereby can produce the pressure reduction of 100-120mmHg, drive blood to circulate.
Above better enforcement of the present utility model is illustrated; certainly; this utility model can also adopt form different from the embodiment described above; the conversion being equal to that those of ordinary skill in the art do under the prerequisite without prejudice to spirit of the present invention or accordingly change, all should belong in protection domain of the present utility model.
Claims (4)
1. a hemisphere supporting construction axial flow blood pump that is applied to artificial heart, is characterized in that: comprise sleeve (13), be arranged on the pump housing in sleeve (13) and be arranged on the outer drive coil (12) of sleeve (13), the described pump housing comprises the pilot blade (4) that is positioned at sleeve (13) Inner Front End, be positioned at the rotor (5) at sleeve (13) middle part, and the rear guide vane (6) that is positioned at sleeve (13) afterbody, described rotor (5) comprises rotor blade (2), permanent magnet (11) and be arranged on the protruding hemisphere (7) of rotor (5) end, two ends, on described pilot blade (4), be provided with pilot blade blade (1), on described rear guide vane (6), be provided with rear guide vane blade (3), on described pilot blade (4) and rear guide vane (6), be provided with the recessed hemisphere (8) corresponding with protruding hemisphere (7), described pilot blade (4) and rear guide vane (6) are fixed to respectively the inner two ends of sleeve (13), the protruding hemisphere (7) at described rotor (5) two ends respectively with pilot blade (4), the recessed hemisphere (8) of rear guide vane (6) coordinates formation hemisphere supporting construction, with supporting and location rotor (5).
2. a kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart according to claim 1, is characterized in that: described rotor (5) two ends are also respectively arranged with front pyramidal structure (9), rear pyramidal structure (10).
3. a kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart according to claim 1, it is characterized in that: described permanent magnet (11) is embedded in rotor (5) inside, the structure of the described pump housing except permanent magnet (11) all adopts titanium alloy material to make.
4. a kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart according to claim 1, it is characterized in that: the leading portion of described rotor blade (2), the normal direction of rotor blade (2) approaches the axis direction of rotor (5), and to rear end, the normal direction of described rotor blade (2) turns to circumferentially gradually by the front end of rotor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334765.4U CN203971002U (en) | 2014-06-20 | 2014-06-20 | A kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334765.4U CN203971002U (en) | 2014-06-20 | 2014-06-20 | A kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart |
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| Publication Number | Publication Date |
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| CN203971002U true CN203971002U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420334765.4U Active CN203971002U (en) | 2014-06-20 | 2014-06-20 | A kind of hemisphere supporting construction axial flow blood pump that is applied to artificial heart |
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| CN (1) | CN203971002U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-06-20 CN CN201420334765.4U patent/CN203971002U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhongshan best artificial heart laboratory Co., Ltd. Assignor: Feng Senming Contract record no.: 2015440000325 Denomination of utility model: Hemispherical support structure axial flow blood pump for artificial heart Granted publication date: 20141203 License type: Exclusive License Record date: 20150619 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180704 Address after: 528400 1 health Road, Torch Development Area, Zhongshan, Guangdong Patentee after: Zhongshan best artificial heart laboratory Co., Ltd. Address before: 528400 1 health Road, Torch Development Area, Zhongshan, Guangdong Patentee before: Feng Senming |
|
| TR01 | Transfer of patent right |