CN110496257A - A kind of small rotary formula blood pump for mobile hart-lung machine - Google Patents
A kind of small rotary formula blood pump for mobile hart-lung machine Download PDFInfo
- Publication number
- CN110496257A CN110496257A CN201810482283.6A CN201810482283A CN110496257A CN 110496257 A CN110496257 A CN 110496257A CN 201810482283 A CN201810482283 A CN 201810482283A CN 110496257 A CN110496257 A CN 110496257A
- Authority
- CN
- China
- Prior art keywords
- blood pump
- rotor
- motor stator
- motor
- blood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
Abstract
The invention discloses a kind of small rotary formula blood pumps for mobile hart-lung machine, including blood pump shell, motor and blood pump impeller, the motor includes motor stator and rotor, coil is equipped in motor stator, motor stator is fixed in blood pump shell, magnet steel is housed on rotor, it is hydraulically full between rotor and motor stator, blood pump impeller is fixed on rotor, the position that blood pump impeller leading faces are corresponded on blood pump shell is equipped with blood pump import, and the position that blood pump impeller side is corresponded on blood pump shell is exported equipped with blood pump.The present invention forms fluid film bearing when utilizing rotor high speed rotation, avoids that mechanical friction occurs between motor stator and rotor, is effectively reduced noise and extends working life.The present invention is small in size, light-weight, and price is low, can realize transfer of the patient from operating room to Intensive Care Unit when for heart-lung machine easily.
Description
Technical field
The present invention relates to medical instruments fields, and in particular to a kind of small rotary formula blood pump for mobile hart-lung machine.
It is mainly used for mobile hart-lung machine row extracorporal circulatory system, or the heart of auxiliary patient's failure, to maintain normal blood circulation.
Background technique
Heart failure is to seriously threaten the disease of human life, when traditional drug therapy has certain limitation, Bu Nengda
To satisfactory effect, heart transplant faces donor shortage again, and when postoperative rejection etc. is difficult, researchers propose to utilize
Mechanical device has developed ventricular assist device come the method for helping heart to restore.Ventricular assist device (Ventricular
Assist device, VAD) it is a kind of blood is drawn by venous system or heart through membrane lung or is pumped directly into arterial system, portion
The artificial mechanism device for dividing or all doing work instead of ventricle.From the last century 60's since clinical application, by grinding for many years
Study carefully and clinical application, the application of VAD recovery, bridge to heart transplantation or substitution after cardiovascular surgery are expanded to myocardial function
Recovery so that heart failure permanent treatment.
Currently, be impeller pump mostly for extracorporal circulatory system, that is, cardiopulmonary bypass blood pump, volume is big, weight weight, and inconvenience is mobile,
And the haemolysis of impeller pump is serious, can only run two hours or so, is not able to satisfy clinical needs.The magnetic developed in the recent period floats off the heart
Pump, but it is expensive, aggravate patient's burden.
Summary of the invention
The present invention makes in view of the shortcomings of the prior art, provide a kind of small rotary formula blood pump for mobile hart-lung machine
Obtaining heart-lung machine becomes portable or portable, can run long period such as a couple of days to several weeks, or temporary in patient's ventricular function
Membrane lung is disengaged when Shi Buneng restores individually implements left ventricle auxiliary.
The object of the present invention is achieved like this:
A kind of small rotary formula blood pump for mobile hart-lung machine, including blood pump shell, motor and blood pump impeller, the motor
Including motor stator and rotor, it is equipped with coil in motor stator, motor stator is fixed in blood pump shell, on rotor
Hydraulically full between rotor and motor stator equipped with magnet steel, blood pump impeller is fixed on rotor, right on blood pump shell
The position of blood pump impeller leading faces is answered to be equipped with blood pump import, the position that blood pump impeller side is corresponded on blood pump shell goes out equipped with blood pump
Mouthful.
A preferred technical solution of the invention, the motor stator are solenoid coil, and cylinder is housed on rotor
Shape magnet steel, rotor are located in solenoid coil, and motor rotor magnetic steel and motor stator core are because attracting each other axially self
It being aligned, after electrical power, rotating excitation field is generated in the annular gap of motor stator and rotor, driving motor rotor rotates,
To drive blood pump impeller to rotate.
The liquid being full of between rotor and motor stator of the present invention can be physiological saline or blood, form radial liquid
Film bearing.
When the rotation of blood pump impeller, the blood in impeller is driven to rotate, and generates centrifugal force, exports and escapes from blood pump, newly
Blood sucked from blood pump import, realize that blood is drawn through membrane lung by venous system or heart or is pumped directly into arterial system.
Blood pump of the present invention is before use, can be full of physiological saline, after motor drives the rotation of blood pump impeller, physiology salt
Water is pumped out, and replaces with new blood.
The present invention is in use, motor stator and rotor complete immersion in blood, use blood with blood contacting surface
The preferable material of liquid phase capacitive or coating avoid the corrosion of material and the pollution of blood such as medical pure titanium, medical polyurethane.
Advantages of the present invention:
1. the present invention forms radial fluid film bearing using the liquid being full of between rotor and motor stator, motor knot is simplified
Structure reduces the volume of blood pump, reduces the weight of blood pump, compares with common impeller pump (mostly feather weight or tens feather weight)
Compared with the present invention has the advantages that (length/width is about 40~50 millimeters) small in size, light-weight (only 200 grams or so), can be light
Easily realize transfer of the patient from operating room to Intensive Care Unit.
2. the present invention sucks blood by impeller leading faces, with centrifugal force using the setting of the blood pump inlet and outlet of L shape
Blood pump is freely escaped by side, it is lower compared to the prior art to utilize rotor squish pipeline pump blood, Blood damage can be substantially reduced,
Make to use for a long time, occurs auxiliary ventricle recovery function when Low output after especially performing the operation, be possibly realized.
3. since this invention simplifies electric machine structures, the weight of rotor is greatly alleviated, only 50 grams of blood pump rotor
Left and right, revolving speed are up to 4500-5000 rpms, and generated hydraulic, formation is enough the liquid film axis for supporting rotor to be detached from stator
It holds, avoids mechanical friction, reduce noise and prolong the service life, while the destruction of blood can be reduced.
4. the present invention makes to form radial fluid film bearing full of blood between rotor and motor stator, there is no traditional blood
Lubricating oil needs the problem of sealing in pump motor, avoids the risk of blood pollution.
5. structure of the invention is simply at low cost compared with floating off heart pump with advanced magnetic, price less than centrifugal pump ten/
One, and reused after capable of washing, disinfection.
Detailed description of the invention
Fig. 1 is structure cut-away view of the invention.
Specific embodiment
Illustrate specific steps of the invention by the following examples, but is not limited by the example.
Term as used in the present invention generally there are those of ordinary skill in the art usually to manage unless otherwise indicated
The meaning of solution.
The present invention is described in further detail combined with specific embodiments below and referring to data.It should be understood that the embodiment is
In order to demonstrate the invention, it rather than limits the scope of the invention in any way.
In the examples below, the various processes and method being not described in detail are conventional methods as known in the art.
The present invention is further described combined with specific embodiments below.
Embodiment 1
A kind of small rotary formula blood pump for mobile hart-lung machine, (arrow is blood flow side to structure in figure as shown in Figure 1
To), including blood pump shell 1, motor and blood pump impeller 2, the motor include rotor 3 and motor stator 4, motor stator 4
It is interior be equipped with coil, motor stator 4 threaded connection be fixed in blood pump shell 1, on rotor be equipped with magnet steel, rotor 3 with
Hydraulically full between motor stator 4,2 left-hand thread of blood pump impeller is fastened on rotor 3, corresponds to blood pump on blood pump shell
The position of impeller leading faces is equipped with blood pump import 5, and the position that blood pump impeller side is corresponded on blood pump shell is equipped with blood pump outlet 6.
The motor stator is solenoid coil, and cylinder-shaped magnet steel is housed on rotor, and rotor is located at cylindrical shape
In coil, rotor is axially self aligned with motor stator because attracting, after electrical power, the ring of motor stator and rotor
Rotating excitation field, driving motor rotor rotation, so that blood pump impeller be driven to rotate are generated in shape gap.
The liquid being full of between rotor and motor stator of the present invention can be physiological saline or blood, have it is subtle between
Gap, it is interior to be full of blood, when 3 high speed rotation of rotor, form fluid film bearing.
Axial position of the rotor 3 relative to motor stator 4, by the magnet steel of rotor and the coil iron of motor stator
The power and blood that core attracts each other determine the reaction force of impeller 2.The axial direction that rotor 3 allows to have slight at work
Beating.
Blood pump of the present invention is not before use, can be full of physiological saline, after motor drives the rotation of blood pump impeller, physiology
Salt water is pumped out, and replaces with new blood.When the rotation of blood pump impeller, the blood in impeller is driven to rotate, and generates centrifugal force,
It is escaped from blood pump outlet, new blood is sucked from blood pump import, realizes blood by venous system or heart extraction through membrane lung or directly
It connects and is pumped into arterial system.
Claims (4)
1. a kind of small rotary formula blood pump for mobile hart-lung machine, it is characterised in that including blood pump shell, motor and blood pump
Impeller, the motor include motor stator and rotor, are equipped with coil in motor stator, motor stator is fixed on blood pump shell
It is interior, magnet steel is housed, hydraulically full between rotor and motor stator, blood pump impeller is fixed on rotor on rotor
On, the position that blood pump impeller leading faces are corresponded on blood pump shell is equipped with blood pump import, corresponds to blood pump impeller side on blood pump shell
Position is exported equipped with blood pump.
2. a kind of small rotary formula blood pump for mobile hart-lung machine according to claim 1, it is characterised in that described
Motor stator is solenoid coil, and cylinder-shaped magnet steel is housed on rotor, and rotor is located in solenoid coil, and motor is logical
After electricity, rotating excitation field, driving motor rotor rotation, to drive blood pump are generated in the annular gap of motor stator and rotor
Impeller rotation.
3. a kind of small rotary formula blood pump for mobile hart-lung machine according to claim 1, it is characterised in that motor
Liquid between rotor and motor stator forms radial fluid film bearing.
4. a kind of small rotary formula blood pump for mobile hart-lung machine according to claim 1, it is characterised in that described
Liquid is physiological saline or blood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810482283.6A CN110496257A (en) | 2018-05-18 | 2018-05-18 | A kind of small rotary formula blood pump for mobile hart-lung machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810482283.6A CN110496257A (en) | 2018-05-18 | 2018-05-18 | A kind of small rotary formula blood pump for mobile hart-lung machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110496257A true CN110496257A (en) | 2019-11-26 |
Family
ID=68584288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810482283.6A Pending CN110496257A (en) | 2018-05-18 | 2018-05-18 | A kind of small rotary formula blood pump for mobile hart-lung machine |
Country Status (1)
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| CN (1) | CN110496257A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2326258Y (en) * | 1998-04-16 | 1999-06-30 | 江苏理工大学 | Pump-machine two-in-one impeller-type ventricle-aid apparatus |
| JP2004245303A (en) * | 2003-02-13 | 2004-09-02 | Mitsubishi Heavy Ind Ltd | Artificial heart pump |
| CN101732769A (en) * | 2010-01-26 | 2010-06-16 | 浙江大学 | Implantable blood pump adopting driven suspension bearing |
| CN101927038A (en) * | 2003-09-18 | 2010-12-29 | 索罗泰克公司 | Rotary blood pump |
| CN107441573A (en) * | 2017-07-20 | 2017-12-08 | 山东大学 | A kind of axial-flow type magnetic suspension blood pump with pulsation speed governing feature |
-
2018
- 2018-05-18 CN CN201810482283.6A patent/CN110496257A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2326258Y (en) * | 1998-04-16 | 1999-06-30 | 江苏理工大学 | Pump-machine two-in-one impeller-type ventricle-aid apparatus |
| JP2004245303A (en) * | 2003-02-13 | 2004-09-02 | Mitsubishi Heavy Ind Ltd | Artificial heart pump |
| CN101927038A (en) * | 2003-09-18 | 2010-12-29 | 索罗泰克公司 | Rotary blood pump |
| CN101732769A (en) * | 2010-01-26 | 2010-06-16 | 浙江大学 | Implantable blood pump adopting driven suspension bearing |
| CN107441573A (en) * | 2017-07-20 | 2017-12-08 | 山东大学 | A kind of axial-flow type magnetic suspension blood pump with pulsation speed governing feature |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220215 Address after: 222100 No. 95, team 1, linma Tuan Village, Jinshan Town, Ganyu County, Lianyungang City, Jiangsu Province Applicant after: Li Yan Address before: Room 1014, building 2, No. 61 Jianning Road, Gulou District, Nanjing, Jiangsu 210015 Applicant before: Jiangsu Xin you Medical Equipment Co.,Ltd. |