CN103341220B - Valveless volumetric heart pump - Google Patents
Valveless volumetric heart pump Download PDFInfo
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- CN103341220B CN103341220B CN201310306324.3A CN201310306324A CN103341220B CN 103341220 B CN103341220 B CN 103341220B CN 201310306324 A CN201310306324 A CN 201310306324A CN 103341220 B CN103341220 B CN 103341220B
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- heart pump
- spherical pair
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Abstract
The invention relates to a valveless volumetric heart pump. The valveless volumetric heart pump comprises an upper cavity cover and a lower cavity cover which are connected through screws and used for forming a fluid containing cavity, and is characterized in that a nutation disc is arranged in the fluid containing cavity formed between the upper cavity cover and the lower cavity cover, spherical pair concave grooves are symmetrically formed in the inner cover surface of the upper cavity cover and the inner cover surface of the lower cavity cover respectively, a spherical pair protruding portion forming a spherical pair structure along with the spherical pair concave grooves is arranged in the middle of the nutation disc, the inner cover surface of the upper cavity cover and the inner cover surface of the lower cavity cover are arranged in an inner conical surface mode with the spherical pair concave grooves as the top and are contacted with the disc surface of the nutation disc in a linear mode, and an electromagnet and an electromagnet coil winding which are used for driving the nutation disc to rotate are arranged on the outer cover surface of the upper cavity cover. The valveless volumetric heart pump avoids the usage of one-way valves, further avoids fatigue damage to the one-way valves, and has the advantage of being stable in flow and pressure compared with a rotary pump.
Description
Technical field
The present invention relates to the pump housing, particularly a kind of valveless positive displacement heart pump.
Background technology
Common fluid pump mainly contains positive displacement pump and rotary pump, major part positive displacement pump is made up of the variable cavity volume of size and two check valves, minority adopts valve plate to replace check valve, for the displacement pump adopting check valve, due to check valve frequent movement, easily cause damage, and adopt the displacement pump of valve plate, during work, rub larger, also there is variety of problems, especially, in the application of artificial blood pump, traditional displacement pump more seems bulky, and due to longevity of service, without resting, unidirectional lobe more easily destroys; For rotary pump, its flow and pressure will lean on the high rotary speed movement of blade to ensure, in the application of artificial blood pump, because volume is little, when ensureing certain flow and pressure, the rotating speed of its blade all will reach 10,000 turns even higher, and just causes blade to the destruction of blood seriously, and control difficulty.
Summary of the invention
The object of the present invention is to provide a kind of valveless positive displacement heart pump, the invention solves the problem of the unidirectional lobe destructible of traditional positive displacement heart pump, and when reaching identical flow and pressure, its rotating speed can far below traditional rotary heart pump.
Technical program of the present invention lies in:
A kind of valveless positive displacement heart pump, comprise upper cavity lid and the lower chamber lid in order to form fluid chamber that link together through screw, it is characterized in that: in the fluid chamber formed between described upper cavity lid and lower chamber lid, be also provided with nutation wheel, the interior capping of described upper cavity lid and lower chamber lid is symmetrically arranged with spherical pair groove respectively, and the middle part of described nutation wheel is provided with the spherical pair protuberance becoming sphere auxiliary structure with spherical pair groove type; Described upper cavity lid is laid for pushing up into inner conical surface with spherical pair groove with the interior capping of lower chamber lid, and becomes linear contact lay with the card of nutation wheel; The outer capping of described upper cavity lid is provided with one in order to the electric magnet that drives nutation wheel to rotate and electromagnet coil winding.
Wherein, also comprise once screw lock invest upper cavity lid with on lower chamber lid lateral wall and flow joint in order to be communicated with fluid chamber, described flow joint is provided with a dividing plate, in described flow joint dividing plate both sides, side is provided with fluid inlet, and opposite side is provided with fluid issuing.
The middle part of the outer capping of described upper cavity lid is provided with round boss, and the laying parallel with the inner conical surface of interior capping of outer capping, described electric magnet becomes Flos Mume ring-type, and electric magnet internal ring is evenly equipped with some magnetic poles inwardly stretched out, the downside of described magnetic pole becomes in order to coordinating the conical surface of outer capping to lay, electric magnet between two adjacent poles is wound with coil windings, the anterior upper side of described magnetic pole is circular step-like, the step cutting pattern shape of described magnetic pole is installed on the pressing plate be fixed on through screw on round boss.
Described nutation wheel offers one in order to install the opening of dividing plate, the spherical pair protuberance of described nutation wheel offers chute.
The interior capping of described upper cavity lid and lower chamber lid is also provided with the septalium installing dividing plate, and the front end of described dividing plate is provided with one in order to be connected to the pin in chute.
Described upper cavity lid becomes dome shape with the medial wall of lower chamber lid, and the edge part of described nutation wheel is also dome shape, its spherical radius 0.1mm less of the spherical radius of upper and lower cavity lid sidewall.
The invention has the advantages that:
The present invention but avoids the use of check valve as a positive displacement pump, thus avoids the fatigue rupture of check valve, in contrast to the advantage that rotary pump has flow, pressure stability.
Accompanying drawing explanation
Fig. 1 is the detonation configuration schematic diagram of the embodiment of the present invention.
Fig. 2 is the lower chamber lid structural representation of the embodiment of the present invention.
Fig. 3 is the upper cavity lid structural representation of the embodiment of the present invention.
Fig. 4 is the nutation wheel structural representation of the embodiment of the present invention.
Fig. 5 is the flow joint design schematic diagram of the embodiment of the present invention.
Fig. 6 is the electric magnet of the embodiment of the present invention and the syndeton schematic diagram of coil windings thereof.
Fig. 7 is the pressure plate structure schematic diagram of the embodiment of the present invention.
Fig. 8 is the overall structure schematic diagram assembled of the embodiment of the present invention.
Sectional structure schematic diagram under four visual angles when Fig. 9 is embodiment of the present invention duty.
Detailed description of the invention
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below.
Referring to figs. 1 to Fig. 9, the present invention relates to a kind of valveless positive displacement heart pump, comprise upper cavity lid 4 and the lower chamber lid 6 in order to form fluid chamber that link together through screw 7, nutation wheel 5 is also provided with in the fluid chamber formed between described upper cavity lid 4 and lower chamber lid 5, described upper cavity lid 4 and the interior capping of lower chamber lid 6 are symmetrically arranged with spherical pair groove 10 respectively, and the middle part of described nutation wheel 5 is provided with the spherical pair protuberance 5-1 forming spherical pair structure with spherical pair groove 10; Described upper cavity lid 4 is laid for pushing up into inner conical surface 15 with spherical pair groove 10 with the interior capping of lower chamber lid 6, and becomes linear contact lay with the card of nutation wheel 5; The outer capping of described upper cavity lid 4 is provided with one in order to the electric magnet 3 that drives nutation wheel 5 to rotate and electromagnet coil winding 11.
Also comprise once screw 8 be attached to upper cavity lid 4 with on lower chamber lid 6 lateral wall and flow joint 9 in order to be communicated with fluid chamber, described flow joint 9 is provided with dividing plate 12, and in dividing plate both sides, side is provided with fluid inlet, and opposite side is provided with fluid issuing.
The middle part of the outer capping of above-mentioned upper cavity lid 4 is provided with round boss 4-1, and the laying parallel with the inner conical surface of interior capping of outer capping 7, described electric magnet 9 one-tenth Flos Mume ring-type, and electric magnet internal ring is evenly equipped with some magnetic pole 9-1 inwardly stretched out, the downside of described magnetic pole 9-1 becomes in order to coordinating the conical surface of outer capping to lay, electric magnet 9 between two adjacent poles is wound with coil windings 11, the anterior upper side of described magnetic pole is circular step-like, the step cutting pattern shape of described magnetic pole is installed on the pressing plate 2 be fixed on through screw 1 on round boss 4-1.
Above-mentioned nutation wheel 5 offers one in order to install the opening 5-2 of dividing plate 12, the spherical pair protuberance 5-1 of described nutation wheel offers chute 5-1-1.
Above-mentioned upper cavity lid 4 and the interior capping of lower chamber lid 6 are also provided with the septalium 13 installing dividing plate 12, and the front end of described dividing plate 12 is provided with one in order to be connected to the pin 14 in chute 5-1-1.
Above-mentioned upper cavity lid 4 becomes dome shape 16 with the medial wall of lower chamber lid 6, and the edge part of described nutation wheel 5 is also dome shape, its spherical radius 0.1mm less of the spherical radius of upper and lower cavity lid sidewall.
Specific embodiment of the invention process:
The invention solves the problem of the unidirectional lobe destructible of traditional positive displacement heart pump, and when reaching identical flow and pressure, its rotating speed can far below traditional rotary heart pump.
The present invention designs based on Nutation Principle, and as shown in Figure 1, it is by lower chamber lid 6, upper cavity lid 4, nutation wheel 5, flow joint 9, electric magnet 3 for the overall structure of this pump housing, the compositions such as briquetting 2 and size three kinds of screws 1,7,8.
If Fig. 2 is lower chamber lid schematic diagram, the processing that its key component mainly contains this conical surface of conical surface 15(will ensure that nutation wheel can form linear contact lay with it after tilting, but not point cantact), spherical pair groove part 10 and sphere 16.
If Fig. 3 is upper cavity lid schematic diagram, the similar of upper cavity lid 4 and lower chamber lid 6, its internal structure is the same with lower chamber lid, is a conical surface, spherical pair concave portions and a sphere, external structure part is as shown in Figure 1 a conical surface, parallel with the inner conical surface.
If Fig. 4 is nutation wheel schematic diagram, the spheroid in the middle of nutation wheel is the male portion of ball pair, and nutation wheel edge is sphere, spherical radius about 0.1mm less of upper and lower cavity spherical radius, can avoid again friction while ensureing sealing, nutation wheel band is jagged, and on spheroid, have a chute.
If Fig. 5 is flow joint schematic diagram, with a dividing plate on this part, there are a fluid intake and a fluid issuing in dividing plate both sides, and import and export must be tried one's best near dividing plate, dividing plate have a pin, form slippage pair with the chute on nutation wheel.
If Fig. 6 is electric magnet and electromagnet coil winding switching schematic diagram, electric magnet is wound with six circle coil windings, each magnetic pole end is that a taper seat parameter is the same with the male cone (strobilus masculinus) of upper cavity, and both play a supporting role, an inner side processing step cutting pattern, as the acting surface that pressing plate is exerted pressure.
If Fig. 7 is pressing plate schematic diagram.
The assembling situation of each part as shown in Figure 1, upper and lower cavity lid is by circumferential step location, use screw lock again, nutation wheel and upper and lower cavity lid are that ball pair is connected, and the connection of flow joint and upper and lower cavity lid leans on the septalium into the dividing plate on flow joint and upper and lower cavity lid to locate, then uses screw lock, it is secondary that chute above pin above dividing plate and nutation wheel spheroid forms slippage, be used for limiting the rotation of nutation wheel, electric magnet and epicoele lean on the conical surface to locate, then compress with pressing plate.
Operationally, nutation wheel is unique moving component to this pump, due to the rotation of nutation wheel limit by the pin on flow joint dividing plate, therefore nutation wheel only does nutating and swings, and without spinning motion.The driver part of this pump is the electric magnet of top loading, the magnetic force size of each magnetic pole on electric magnet is controlled by the energising power-off controlling each coil above electric magnet, nutation wheel is under the magneticaction of magnetic pole, be in heeling condition, card is close to the inner conical surface of upper and lower cavity lid, form two sections of contacts wire, inner volume separates by the dividing plate of these two sections of contacts wire and flow joint, is divided into two parts.
The energising power-off being controlled each coil by certain rule just can allow the maximum magnetic pole of magnetic force do circumference conversion (supposing to be seen as from top to bottom clockwise).Nutation wheel is by the magneticaction of electromagnet pole, also do clockwise circumferential cycle and swing (without rotation), contact wire also rotates clockwise, when only considering lower chamber lid, if using contact wire to the region of dividing plate left side import as inlet region, using the region exported on the right of contact wire to dividing plate as outlet area, rotating clockwise then due to contact wire, entrance area is caused constantly to become large, form negative pressure, blood flows into from entrance, and exit region constantly diminishes, blood is extruded from outlet, when contact wire forwards exit position to, entrance area reaches maximum, exit region reaches minimum, at this moment, contact wire walks around dividing plate with the very short time, original inlet region is become outlet area, and inlet region is large from little continuous change, outlet area is from constantly diminishing greatly, circulation like this.The situation of epicoele is the same with cavity of resorption.Briefly, nutation wheel is by the magneticaction of electromagnet pole, do clockwise circumferential cycle to swing, nutation wheel drives the blood in cavity volume also to do clockwise circular motion, because ring-shaped chamber cuts off by the dividing plate on flow joint, force blood must flow to the outlet of dividing plate right-hand member from the entrance on the dividing plate left side.When magnetic pole do convert counterclockwise time, nutation wheel does counterclockwise nutating and swings, and blood just flows to the outlet of dividing plate left end from the entrance of dividing plate right-hand member, therefore which be entrance, and which exports to depend on the swaying direction of nutation wheel.
The present invention can be used for development of new artificial heart pump, has flow pressure and stablize compared with current artificial heart pump, the feature that rotating speed is low, and does not have unidirectional lobe, can avoid the fatigue rupture of unidirectional lobe.When for industrial circle, because the pump housing is comparatively large, magnetically-actuated can be changed to Mechanical Driven.
To control circuit be coordinated when the present invention works, utilize mcu programming to the size of the conversion rate and direction and magnetic force that control the magnetic pole that magnetic force is the strongest on electric magnet, control fluid flow, flow direction and fluid output pressure.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (6)
1. a valveless positive displacement heart pump, comprise upper cavity lid and the lower chamber lid in order to form fluid chamber that link together through screw, it is characterized in that: in the fluid chamber formed between described upper cavity lid and lower chamber lid, be also provided with nutation wheel, the interior capping of described upper cavity lid and lower chamber lid is symmetrically arranged with spherical pair groove respectively, and the middle part of described nutation wheel is provided with the spherical pair protuberance becoming sphere auxiliary structure with spherical pair groove type; Described upper cavity lid is laid for pushing up into inner conical surface with spherical pair groove with the interior capping of lower chamber lid, and becomes linear contact lay with the card of nutation wheel; The outer capping of described upper cavity lid is provided with one in order to the electric magnet that drives nutation wheel to rotate and electromagnet coil winding.
2. a kind of valveless positive displacement heart pump according to claim 1, it is characterized in that: also comprise once screw lock invest upper cavity lid with on lower chamber lid lateral wall and flow joint in order to be communicated with fluid chamber, described flow joint is provided with a dividing plate, in described flow joint dividing plate both sides, side is provided with fluid inlet, and opposite side is provided with fluid issuing.
3. a kind of valveless positive displacement heart pump according to claim 1 and 2, it is characterized in that: the middle part of the outer capping of described upper cavity lid is provided with round boss, and the laying parallel with the inner conical surface of interior capping of outer capping, described electric magnet becomes Flos Mume ring-type, and electric magnet internal ring is evenly equipped with some magnetic poles inwardly stretched out, the downside of described magnetic pole becomes in order to coordinating the conical surface of outer capping to lay, electric magnet between two adjacent poles is wound with coil windings, the anterior upper side of described magnetic pole is circular step-like, the step cutting pattern shape of described magnetic pole is installed on the pressing plate be fixed on through screw on round boss.
4. a kind of valveless positive displacement heart pump according to claim 3, is characterized in that: described nutation wheel offers one in order to install the opening of dividing plate, the spherical pair protuberance of described nutation wheel offers chute.
5. a kind of valveless positive displacement heart pump according to claim 4, is characterized in that: the septalium interior capping of described upper cavity lid and lower chamber lid being also provided with to install dividing plate, and the front end of described dividing plate is provided with one in order to be connected to the pin in chute.
6. a kind of valveless positive displacement heart pump according to claim 1 or 5, it is characterized in that: described upper cavity lid becomes dome shape with the medial wall of lower chamber lid, the edge part of described nutation wheel is also dome shape, its spherical radius 0.1mm less of the spherical radius of upper and lower cavity lid sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306324.3A CN103341220B (en) | 2013-07-22 | 2013-07-22 | Valveless volumetric heart pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306324.3A CN103341220B (en) | 2013-07-22 | 2013-07-22 | Valveless volumetric heart pump |
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| Publication Number | Publication Date |
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| CN103341220A CN103341220A (en) | 2013-10-09 |
| CN103341220B true CN103341220B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310306324.3A Active CN103341220B (en) | 2013-07-22 | 2013-07-22 | Valveless volumetric heart pump |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477705B (en) * | 2016-01-18 | 2017-10-20 | 福州大学 | A kind of magnetic suspension heart chamber auxiliary pump and its application based on Nutation Principle |
| CN106964007B (en) * | 2017-04-14 | 2023-07-18 | 福州大学 | Electromagnetic driven magnetic suspension nutation heart pump and use method thereof |
| CN111298223A (en) * | 2020-02-27 | 2020-06-19 | 三明学院 | Nutation type magnetic suspension artificial heart pump and system thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3305397B2 (en) * | 1993-03-03 | 2002-07-22 | アイシン精機株式会社 | Blood pump |
| JPH09248333A (en) * | 1996-03-14 | 1997-09-22 | Shinsaku Kaguchi | Artificial heart |
| US20050261543A1 (en) * | 2004-05-18 | 2005-11-24 | Yusuke Abe | Implantable artificial ventricular assist device |
| WO2007084339A2 (en) * | 2006-01-13 | 2007-07-26 | Heartware, Inc. | Rotary blood pump |
| EP2005376A2 (en) * | 2006-03-31 | 2008-12-24 | Orqis Medical Corporation | Rotary blood pump |
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2013
- 2013-07-22 CN CN201310306324.3A patent/CN103341220B/en active Active
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| CN103341220A (en) | 2013-10-09 |
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