CN116421879A - Hydrodynamic catheter - Google Patents
Hydrodynamic catheter Download PDFInfo
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- CN116421879A CN116421879A CN202310694297.5A CN202310694297A CN116421879A CN 116421879 A CN116421879 A CN 116421879A CN 202310694297 A CN202310694297 A CN 202310694297A CN 116421879 A CN116421879 A CN 116421879A
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- 239000012530 fluid Substances 0.000 claims abstract description 75
- 238000007789 sealing Methods 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 13
- 210000004369 blood Anatomy 0.000 abstract description 31
- 239000008280 blood Substances 0.000 abstract description 31
- 210000000709 aorta Anatomy 0.000 abstract description 13
- 230000002861 ventricular Effects 0.000 abstract description 11
- 210000005240 left ventricle Anatomy 0.000 description 16
- 238000005452 bending Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 208000024172 Cardiovascular disease Diseases 0.000 description 2
- 206010007625 cardiogenic shock Diseases 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000009525 Myocarditis Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 206010000891 acute myocardial infarction Diseases 0.000 description 1
- 201000005180 acute myocarditis Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 210000005259 peripheral blood Anatomy 0.000 description 1
- 239000011886 peripheral blood Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- 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
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
- A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
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- 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
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
-
- 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
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor 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
- A61M60/465—Details relating to driving for devices for mechanical circulatory actuation
- A61M60/489—Details relating to driving for devices for mechanical circulatory actuation the force acting on the actuation means being magnetic
- A61M60/495—Electromagnetic force
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- 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
- A61M60/804—Impellers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Mechanical Engineering (AREA)
- Animal Behavior & Ethology (AREA)
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- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- External Artificial Organs (AREA)
Abstract
The application relates to the technical field of medical instruments and provides a hydrodynamic catheter. The fluid power conduit comprises a conduit, and a drainage hole is formed in the first end of the conduit; the driving shell is internally provided with a mounting cavity communicated with the catheter, and is provided with an opening communicated with the mounting cavity; the driven magnetic turbine is rotatably arranged in the mounting cavity; the driving magnetic turbine is suitable for driving the driven magnetic turbine to rotate; a fluid inflow joint in which a fluid inflow passage is formed; the fluid outflow joint is internally provided with a fluid outflow channel, and the fluid inflow channel and the fluid outflow channel are communicated with the active magnetic turbine, so that fluid can flow through the active magnetic turbine and drive the active magnetic turbine to rotate. According to the hydrodynamic catheter of the embodiment of the application, the left ventricular blood is drained to the aorta without using a driving part such as a motor.
Description
Technical Field
The present application relates to the field of medical devices, and in particular, to hydrodynamic catheters.
Background
With the development of economy, the change of national lifestyle, especially the acceleration of population aging and urbanization process, the unhealthy lifestyle of residents is increasingly prominent, and the influence of cardiovascular disease risk factors on the health of residents is more remarkable, so that the incidence rate of cardiovascular diseases is continuously increased. Cardiogenic shock is a main cause of various heart diseases such as acute myocardial infarction, acute myocarditis and the like, and is also the most common cause of death of the patients. The interventional left ventricular assist device is a device which directly leads the blood of the left ventricle to the outside of the body to reduce the heart load, replace the ventricle to do work, increase the peripheral blood supply and partially or completely replace the left ventricular ejection function, and has great significance for treating cardiogenic shock.
In the left ventricular assist device in the related art, most of the left ventricular assist device uses a motor to drive a turbine to rotate so as to drain blood from a left ventricle to an aorta, but the outer diameter of the left ventricular assist device such as a catheter is limited by clinical application, and is generally not more than 8mm, so that the manufacturing cost of the motor is high, the cost of the ventricular assist device and the like is high, the clinical selling price can not be reduced, and the clinical popularization of the ventricular assist device is limited.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the related art. Therefore, the application provides a hydrodynamic catheter, the driving magnetic turbine is driven to rotate through fluid, the driving magnetic turbine drives the driven magnetic turbine to rotate, so that blood at the drainage hole can flow to the opening, and further, the left ventricular blood is drained to the aorta without using driving parts such as a motor, the manufacturing cost of the hydrodynamic catheter and corresponding products is reduced, the selling price of the hydrodynamic catheter can be effectively reduced, and the clinical popularization of the hydrodynamic catheter is facilitated.
A hydrodynamic catheter according to an embodiment of the present application, comprising:
the first end of the guide pipe is provided with a drainage hole;
the driving shell is connected with the second end of the guide pipe, a mounting cavity communicated with the guide pipe is arranged in the driving shell, and an opening communicated with the mounting cavity is formed in the driving shell;
a driven magnetic turbine rotatably mounted to the mounting cavity;
the driving magnetic turbine is arranged in the mounting cavity, the driven magnetic turbine is positioned between the guide pipe and the driving magnetic turbine, a sealing partition plate is arranged between the driven magnetic turbine and the driving magnetic turbine, and the driving magnetic turbine is suitable for driving the driven magnetic turbine to rotate;
a fluid inflow joint connected with one end of the drive housing away from the catheter, wherein a fluid inflow channel is formed in the fluid inflow joint;
the fluid outflow connector is connected with one end, far away from the guide pipe, of the driving shell, a fluid outflow channel is formed in the fluid outflow connector, and the fluid inflow channel and the fluid outflow channel are communicated with the active magnetic turbine, so that fluid can flow through the active magnetic turbine and drive the active magnetic turbine to rotate.
According to the hydrodynamic catheter disclosed by the embodiment of the application, the catheter is placed at the left ventricle, the driving shell is placed in the ascending aorta, the drainage hole is formed in the left ventricle, the opening is formed in the ascending aorta, then the fluid such as gas or liquid is conveyed to the position of the driving magnetic turbine through the fluid inflow joint, the fluid flows out of the fluid outflow joint after flowing through the driving magnetic turbine, the driving magnetic turbine can be driven to rotate when flowing through the driving magnetic turbine, then the driving magnetic turbine drives the driven magnetic turbine to rotate, and when the driven magnetic turbine rotates, blood in the left ventricle flows into the catheter along the drainage hole, then flows to the opening and flows to the ascending aorta from the opening. Therefore, the left ventricular blood is led to the ascending aorta without using driving parts such as a motor, the manufacturing cost of the fluid power conduit and corresponding products is reduced, the selling price of the fluid power conduit can be effectively reduced, and the clinical popularization of the fluid power conduit is facilitated. And because the sealing partition plate is arranged between the driven magnetic turbine and the driving magnetic turbine, the blood in the left ventricle can be effectively prevented from flowing to the driving magnetic turbine, contact and mixing of the fluid and the blood are avoided, the fluid can stably drive the driving magnetic turbine to rotate, the driving magnetic turbine cannot be influenced by the blood in the left ventricle, and the hydrodynamic catheter can stably drain the blood in the left ventricle to the ascending aorta.
According to one embodiment of the application, the sealing separator is provided with a connecting hole, the hydrodynamic duct comprises a connecting piece, one end of the connecting piece is connected with the driving magnetic turbine, the other end of the connecting piece penetrates through the connecting hole and is connected with the driven magnetic turbine, the connecting piece is in sealing connection with the wall surface of the connecting hole, and the connecting piece can rotate relative to the connecting hole.
According to an embodiment of the present application, the driving magnetic turbine and the driven magnetic turbine are connected through at least one of clamping, welding and threaded connection, the connection part of the driving magnetic turbine and the driven magnetic turbine is in sealing connection with the wall surface of the connecting hole, and the connection part of the driving magnetic turbine and the driven magnetic turbine can rotate relative to the connecting hole.
According to one embodiment of the present application, the driven magnetic turbine is magnetically attracted to an end of the driving magnetic turbine, which is close to the driven magnetic turbine.
According to one embodiment of the application, the initiative magnetic turbine is close to the one end of driven magnetic turbine is equipped with the initiative magnetic disk, be equipped with a plurality of N utmost point pieces and a plurality of S utmost point pieces on the initiative magnetic disk, the initiative magnetic disk the N utmost point piece with the S utmost point piece is followed the circumference of initiative magnetic disk sets up in turn, the driven magnetic turbine is close to the one end of initiative magnetic turbine is equipped with the driven magnetic disk, be equipped with a plurality of N utmost point pieces and a plurality of S utmost point pieces on the driven magnetic disk, the N utmost point piece of driven magnetic disk with the S utmost point piece is followed the circumference of driven magnetic disk sets up in turn, the N utmost point piece of initiative magnetic disk with the S utmost point piece of driven magnetic disk corresponds, the S utmost point piece of initiative magnetic disk with the N utmost point piece of driven magnetic disk corresponds.
According to one embodiment of the application, the hydrodynamic catheter comprises a first rotational speed detection element provided to the drive housing, the first rotational speed detection element being adapted to detect the rotational speed of the driven magnetic turbine.
According to an embodiment of the application, the hydrodynamic catheter comprises a second rotational speed detection element provided to the drive housing, the second rotational speed detection element being adapted to detect the rotational speed of the active magnetic turbine.
According to one embodiment of the present application, the catheter comprises a proximal tube and an elastic member, wherein:
the elastic piece is sleeved on the outer wall surface of the proximal tube; or alternatively, the first and second heat exchangers may be,
the near tube is sleeved outside the elastic piece; or alternatively, the first and second heat exchangers may be,
an installation space is formed in the wall surface of the proximal tube, and the elastic piece is installed in the installation space.
According to an embodiment of the application, the installation cavity is internally provided with a supporting plate, the supporting plate is located between the guide pipe and the driven magnetic turbine, a through hole is formed in the supporting plate, one end of the driven magnetic turbine is rotatably connected with the supporting plate, and the other end of the driven magnetic turbine is rotatably connected with the sealing partition plate.
According to one embodiment of the present application, the inner wall surface of the installation cavity is provided with a rotating groove matched with the driven magnetic turbine, and the driven magnetic turbine is slidably connected to the rotating groove.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person having ordinary skill in the art.
FIG. 1 is a schematic illustration of a fluid power conduit provided in an embodiment of the present application;
FIG. 2 is one of the cross-sectional views of a hydrodynamic catheter provided by an embodiment of the present application;
FIG. 3 is a second cross-sectional view of a hydrodynamic catheter provided by an embodiment of the present application;
FIG. 4 is a partial cross-sectional view of a hydrodynamic catheter provided by an embodiment of the present application;
FIG. 5 is a schematic view of the structure of a driven disk of a hydrodynamic catheter according to an embodiment of the present application;
FIG. 6 is a schematic diagram of the structure of an active magnetic disk of a hydrodynamic catheter according to an embodiment of the present application.
Reference numerals:
1. a conduit; 2. a drive housing; 3. a driven magnetic turbine; 4. an active magnetic turbine;
5. a sealing separator; 6. a fluid inflow joint; 7. a fluid outflow nipple; 11. drainage holes;
12. a proximal tube; 13. an elastic member; 14. a connecting piece; 21. a mounting cavity; 22. an opening;
23. a support plate; 31. a slave disk; 41. an active disk; 61. a fluid inflow channel;
71. the fluid flows out of the channel.
Detailed Description
Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the present application but are not intended to limit the scope of the present application.
In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on those shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
In the examples herein, a first feature "on" or "under" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intermediary, unless expressly stated and defined otherwise. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The hydrodynamic catheter of the present application is described below in connection with fig. 1 to 6.
According to the embodiment of the application, as shown in fig. 1, 2 and 3, the hydrodynamic catheter comprises a catheter 1, a driving housing 2, a driven magnetic turbine 3, a driving magnetic turbine 4, a fluid inflow joint 6 and a fluid outflow joint 7, wherein a first end of the catheter 1 is provided with a drainage hole 11, the driving housing 2 is connected with a second end of the catheter 1, a mounting cavity 21 communicated with the catheter 1 is arranged in the driving housing 2, the driving housing 2 is provided with an opening 22 communicated with the mounting cavity 21, the driven magnetic turbine 3 is rotatably mounted in the mounting cavity 21, the driving magnetic turbine 4 is mounted in the mounting cavity 21, the driven magnetic turbine 3 is positioned between the catheter 1 and the driving magnetic turbine 4, a sealing partition 5 is arranged between the driven magnetic turbine 3 and the driving magnetic turbine 4, the driving magnetic turbine 4 is suitable for driving the driven magnetic turbine 3 to rotate, the fluid inflow joint 6 is connected with one end of the driving housing 2 far away from the catheter 1, a fluid inflow channel 61 is formed in the fluid inflow joint 6, the fluid outflow joint 7 is connected with one end of the driving housing 2 far away from the catheter 1, a fluid outflow channel 71 is formed in the fluid outflow joint 7, both the fluid inflow channel 61 and the fluid outflow channel 71 are communicated with the driving magnetic turbine 4, so that the driving magnetic turbine 4 can rotate and the driving magnetic turbine 4 can drive the driving magnetic turbine 4 to rotate.
According to the hydrodynamic catheter of the application, the catheter 1 is placed at the left ventricle, the driving shell 2 is placed in the ascending aorta, the drainage hole 11 is positioned in the left ventricle, the opening 22 is positioned in the ascending aorta, then the fluid such as gas or liquid is conveyed to the position of the active magnetic turbine 4 through the fluid inflow joint 6, the fluid flows out of the fluid outflow joint 7 after flowing through the active magnetic turbine 4, the active magnetic turbine 4 can be driven to rotate when flowing through the active magnetic turbine 4, then the active magnetic turbine 4 drives the driven magnetic turbine 3 to rotate, and when the driven magnetic turbine 3 rotates, the blood of the left ventricle flows into the catheter 1 along the drainage hole 11, then flows to the position of the opening 22 and flows to the ascending aorta from the opening 22. Therefore, the left ventricular blood is led to the ascending aorta without using driving parts such as a motor, the manufacturing cost of the fluid power conduit and corresponding products is reduced, the selling price of the fluid power conduit can be effectively reduced, and the clinical popularization of the fluid power conduit is facilitated. And because the sealing partition plate 5 is arranged between the driven magnetic turbine 3 and the driving magnetic turbine 4, the blood in the left ventricle can be effectively prevented from flowing to the driving magnetic turbine 4, the contact and the mixing of the fluid and the blood are avoided, the fluid can stably drive the driving magnetic turbine 4 to rotate, the driving magnetic turbine 4 cannot be influenced by the blood in the left ventricle, and the hydrodynamic catheter can stably drain the blood in the left ventricle to the ascending aorta.
In the embodiment of the present application, the connection between the drive housing 2 and the second end of the catheter 1 is achieved, for example, by at least one of sleeving, clamping, bonding, etc., the drive housing 2 is kept in sealing connection with the second end of the catheter 1, and the installation cavity 21 is communicated with the catheter 1. It will be appreciated that the connection between the drive housing 2 and the second end of the catheter 1 may also be achieved in any other suitable way.
In the embodiment of the present application, the sealing diaphragm 5 is in sealing connection with the inner face of the mounting cavity 21, so that the driven magnetic turbine 3 and the driving magnetic turbine 4 are completely separated, thereby avoiding the blood at the left ventricle from flowing to the driving magnetic turbine 4.
In one embodiment of the present application, as shown in fig. 3, the sealing separator 5 is provided with a connection hole, wherein the fluid power conduit includes a connection member 14, one end of the connection member 14 is connected with the driving magnetic turbine 4, the other end of the connection member 14 is penetrated through the connection hole and connected with the driven magnetic turbine 3, the connection member 14 is in sealing connection with a wall surface of the connection hole, and the connection member 14 can rotate relative to the connection hole. When the magnetic turbine driving device is used, the driving magnetic turbine 4 and the driven magnetic turbine 3 are connected together through the connecting piece 14, so that the driving magnetic turbine 4 and the driven magnetic turbine 3 are rigidly connected, the driving magnetic turbine 4 can drive the driven magnetic turbine 3 to rotate together when rotating, and synchronous rotation of the driving magnetic turbine 4 and the driven magnetic turbine 3 is realized. And the connecting piece 14 is in sealing connection with the wall surface of the connecting hole, so that the blood can not flow to the driving magnetic turbine 4 and the fluid can not flow to the driven magnetic turbine 3.
In the embodiments of the present application, the connection member 14 is, for example, a connection rod or a connection block.
In one embodiment of the present application, the driving magnetic turbine 4 and the driven magnetic turbine 3 are connected by at least one of clamping, welding and threaded connection, the connection part of the driving magnetic turbine 4 and the driven magnetic turbine 3 is in sealing connection with the wall surface of the connection hole, and the connection part of the driving magnetic turbine 4 and the driven magnetic turbine 3 can rotate relative to the connection hole. When the magnetic turbine is used, the driving magnetic turbine 4 and the driven magnetic turbine 3 are connected together in a clamping manner, or the driving magnetic turbine 4 and the driven magnetic turbine 3 are connected together in a welding manner, or the driving magnetic turbine 4 and the driven magnetic turbine 3 are connected through threaded connection, so that the rigid connection between the driving magnetic turbine 4 and the driven magnetic turbine 3 is realized, and the driving magnetic turbine 4 can drive the driven magnetic turbine 3 to rotate together when rotating. It should be appreciated that the connection between the driving magnetic turbine 4 and the driven magnetic turbine 3 may be achieved using two or more of a snap-fit, a weld, and a threaded connection at the same time, or the connection between the driving magnetic turbine 4 and the driven magnetic turbine 3 may be achieved by any other suitable means. And the junction of the driving magnetic turbine 4 and the driven magnetic turbine 3 is in sealing connection with the connecting hole, so that the driving magnetic turbine 4 and the driven magnetic turbine 3 are kept separated, blood can not contact with or even be mixed with fluid, and the hydrodynamic catheter can work normally.
In one embodiment of the present application, the end of the driven magnetic turbine 3 near the driving magnetic turbine 4 is magnetically attracted to the end of the driving magnetic turbine 4 near the driven magnetic turbine 3. When the magnetic coupling device is used, the magnetism of one end of the driven magnetic turbine 3, which is close to the driving magnetic turbine 4, is set to be different from the magnetism of one end of the driving magnetic turbine 4, which is close to the driven magnetic turbine 3, so that the driving magnetic turbine 4 and the driven magnetic turbine 3 are attracted to each other, and further the magnetic coupling of the driving magnetic turbine 4 and the driven magnetic turbine 3 is realized, and the driving magnetic turbine 4 can drive the driven magnetic turbine 3 to rotate together when rotating.
In the embodiment of the application, as shown in fig. 2, 3, 5 and 6, one end of the driving magnetic turbine 4, which is close to the driven magnetic turbine 3, is provided with a driving disk 41, a plurality of N pole blocks and a plurality of S pole blocks are arranged on the driving disk 41, the N pole blocks and the S pole blocks of the driving disk 41 are alternately arranged along the circumferential direction of the driving disk 41, one end of the driven magnetic turbine 3, which is close to the driving magnetic turbine 4, is provided with a driven disk 31, a plurality of N pole blocks and a plurality of S pole blocks are arranged on the driven disk 31, the N pole blocks and the S pole blocks of the driven disk 31 are alternately arranged along the circumferential direction of the driven disk 31, the N pole blocks of the driving disk 41 correspond to the S pole blocks of the driven disk 31, and the S pole blocks of the driving disk 41 correspond to the N pole blocks of the driven disk 31. When the magnetic disk drive device is used, the S pole blocks on the driving magnetic disk 41 of the driving magnetic turbine 4 are in one-to-one correspondence with the N pole blocks on the driven magnetic disk 31 of the driven magnetic turbine 3, and the N pole blocks of the driving magnetic disk 41 are in one-to-one correspondence with the S pole blocks of the driven magnetic disk 31, so that the driving magnetic disk 41 and the driven magnetic disk 31 are magnetically attracted, the driving magnetic disk 41 and the driven magnetic disk 31 can keep synchronous rotation, and then the driving magnetic turbine 4 and the driven magnetic turbine 3 can keep synchronous rotation. And because the N pole piece and the S pole piece of the driving magnetic disk 41 and the driven magnetic disk 31 are alternately arranged along the circumferential direction, the N pole piece of the driving magnetic disk 41 is the N pole piece of the driven magnetic disk 31, and according to the principle of like polarity repulsion, the N pole piece of the driving magnetic disk 41 can be acted by the N pole piece of the driven magnetic disk 31, so that the N pole piece of the driving magnetic disk 41 can be kept stable and can not slide to two sides, and the S pole piece of the driving magnetic disk 41, the N pole piece of the driven magnetic disk 31 and the S pole piece of the driven magnetic disk 31 are difficult to slide to two sides, so that the stability of magnetic connection between the driving magnetic disk 41 and the driven magnetic disk 31 is improved, the phenomenon of skidding between the driving magnetic disk 41 and the driven magnetic disk 31 is avoided, and the driving magnetic turbine 4 and the driven magnetic turbine 3 can keep accurate synchronous rotation.
In one embodiment of the present application, the hydrodynamic catheter comprises a first rotational speed detection element provided to the drive housing 2, the first rotational speed detection element being adapted to detect the rotational speed of the driven magnetic turbine 3. When the device is used, the first rotation speed detection element is used for detecting the rotation speed of the driven magnetic turbine 3, so that the real-time rotation speed of the driven magnetic turbine 3 can be obtained, and the blood drainage speed of the hydrodynamic catheter can be further obtained. The first rotational speed detecting element may transmit detection data to the controller or the corresponding terminal, and may further adjust the magnetic strength of the driving magnetic turbine 4 or the rotational speed of the driving magnetic turbine 4 based on the real-time rotational speed of the driven magnetic turbine 3 and the actually required blood drainage speed, so that the rotational speed of the driven magnetic turbine 3 is changed along with the change, and thus the blood drainage speed of the hydrodynamic catheter is the actually required blood drainage speed.
In one embodiment of the present application, the hydrodynamic catheter comprises a second rotational speed detection element provided to the drive housing 2, the second rotational speed detection element being adapted to detect the rotational speed of the active magnetic turbine 4. When the device is used, the second rotating speed detecting element is used for detecting the rotating speed of the driving magnetic turbine 4, so that the real-time rotating speed of the driving magnetic turbine 4 can be obtained, the rotating speed of the driven magnetic turbine 3 can be obtained, and the blood drainage speed of the hydrodynamic catheter can be obtained. The second rotation speed detecting element may transmit the detected data to the controller or the corresponding terminal, and may further adjust the flow speed of the fluid based on the real-time rotation speed of the driven magnetic turbine 3 and the actually required blood drainage speed, so that the rotation speed of the driven magnetic turbine 4 is changed, and the rotation speed of the driven magnetic turbine 3 is changed along with the change, so that the blood drainage speed of the hydrodynamic catheter is the actually required blood drainage speed.
In an embodiment of the present application, the first and second rotational speed detecting elements are, for example, miniature rotational speed sensors. It should be appreciated that the first and second rotational speed detecting elements may be any other suitable element having a rotational speed detecting function.
In one embodiment of the present application, as shown in fig. 2, 3 and 4, the catheter 1 comprises a proximal tube 12 and an elastic member 13, wherein:
the elastic piece 13 is sleeved on the outer wall surface of the proximal tube 12; or alternatively, the first and second heat exchangers may be,
the proximal tube 12 is sleeved outside the elastic piece 13; or alternatively, the first and second heat exchangers may be,
an installation space is provided in the wall surface of the proximal tube 12, and the elastic member 13 is installed in the installation space.
When the catheter is used, the elastic element 13 and the proximal tube 12 are combined together to form the catheter 1, the elastic element 13 and the proximal tube 12 can be connected in a mode that the elastic element 13 is sleeved outside the proximal tube 12, the elastic element 13 and the proximal tube 12 can be connected in a mode that the proximal tube 12 is sleeved outside the elastic element 13, and the elastic element 13 and the proximal tube 12 can be connected in a mode that the elastic element 13 is nested in the wall surface of the proximal tube 12.
Since the catheter 1 needs to be disposed in the human body, the materials of the catheter 1 in the related art are flexible materials, which have problems of easy bending to affect the blood flow and difficult shape recovery after bending. The catheter 1 is formed by combining the proximal tube 12 and the elastic piece 13, the elastic piece 13 can generate reverse elastic force when the proximal tube 12 is bent to prevent the proximal tube 12 from bending, so that the proximal tube 12 is not easy to bend, the elastic piece 13 can be driven to bend together after the proximal tube 12 is bent, and the elastic piece 13 after bending has elastic force for recovering deformation, so that the proximal tube 12 can be driven to recover to the original shape as soon as possible.
In the embodiments of the present application, the elastic member 13 is, for example, a spring or an elastic rubber member or any other suitable elastic structural member.
In one embodiment of the present application, as shown in fig. 1, 2 and 3, the opening 22 is located between the sealing bulkhead 5 and an end of the driven magnetic turbine 3 remote from the sealing bulkhead 5. When the device is used, the opening 22 is arranged at the part of the driving shell 2 corresponding to the driven magnetic turbine 3, so that the opening 22 is positioned at one side of the sealing partition plate 5 close to the driven magnetic turbine 3, the opening 22 can be directly communicated with the driven magnetic turbine 3, when the driven magnetic turbine 3 rotates, the blood in the left ventricle can be drained to the opening 22 to flow out, the blood does not need to flow to one side of the driving magnetic turbine 4, and the contact between the blood and the driving magnetic turbine 4 can be effectively avoided.
In one embodiment of the present application, as shown in fig. 1, 2 and 3, a support plate 23 is disposed in the installation cavity 21, the support plate 23 is located between the conduit 1 and the driven magnetic turbine 3, a through hole is disposed on the support plate 23, one end of the driven magnetic turbine 3 is rotatably connected with the support plate 23, and the other end of the driven magnetic turbine 3 is rotatably connected with the sealing partition 5. When in use, the driven magnetic turbine 3 is arranged between the supporting plate 23 and the sealing partition plate 5, two ends of the driven magnetic turbine 3 are respectively and rotatably connected with the supporting plate 23 and the sealing partition plate 5, and the driven magnetic turbine 3 can be rotatably arranged in the mounting cavity 21, so that the driven magnetic turbine 3 can rotate in the mounting cavity 21, and meanwhile, the supporting plate 23 and the sealing partition plate 5 can also play a limiting role on the driven magnetic turbine 3, so that the driven magnetic turbine 3 is prevented from displacement.
In the embodiment of the present application, the support plate 23 is fixedly connected with the wall surface of the installation cavity 21, for example, so that the support plate 23 is fixedly installed in the installation cavity 21, and can play a stable supporting role on the driven magnetic turbine 3.
In one embodiment of the present application, the inner wall surface of the installation cavity 21 is provided with a rotation groove matched with the driven magnetic turbine 3, and the driven magnetic turbine 3 is slidably connected to the rotation groove. When in use, the driven magnetic turbine 3 is partially installed in the rotating groove, so that the rotating groove can play a limiting role on the driven magnetic turbine 3, and meanwhile, the driven magnetic turbine 3 is rotatably installed in the installation cavity 21 due to the sliding connection of the driven magnetic turbine 3 and the rotating groove, so that the driven magnetic turbine 3 can stably rotate.
Finally, it should be noted that the above embodiments are only for illustrating the present application, and are not limiting of the present application. While the present application has been described in detail with reference to the embodiments, those skilled in the art will understand that various combinations, modifications, or equivalents of the technical solutions of the present application may be made without departing from the spirit and scope of the technical solutions of the present application, and all such modifications are intended to be covered by the claims of the present application.
Claims (10)
1. A hydrodynamic catheter, comprising:
the first end of the guide pipe is provided with a drainage hole;
the driving shell is connected with the second end of the guide pipe, a mounting cavity communicated with the guide pipe is arranged in the driving shell, and an opening communicated with the mounting cavity is formed in the driving shell;
a driven magnetic turbine rotatably mounted to the mounting cavity;
the driving magnetic turbine is arranged in the mounting cavity, the driven magnetic turbine is positioned between the guide pipe and the driving magnetic turbine, a sealing partition plate is arranged between the driven magnetic turbine and the driving magnetic turbine, and the driving magnetic turbine is suitable for driving the driven magnetic turbine to rotate;
a fluid inflow joint connected with one end of the drive housing away from the catheter, wherein a fluid inflow channel is formed in the fluid inflow joint;
the fluid outflow connector is connected with one end, far away from the guide pipe, of the driving shell, a fluid outflow channel is formed in the fluid outflow connector, and the fluid inflow channel and the fluid outflow channel are communicated with the active magnetic turbine, so that fluid can flow through the active magnetic turbine and drive the active magnetic turbine to rotate.
2. The fluid power conduit according to claim 1, wherein the sealing partition plate is provided with a connecting hole, the fluid power conduit comprises a connecting piece, one end of the connecting piece is connected with the driving magnetic turbine, the other end of the connecting piece penetrates through the connecting hole and is connected with the driven magnetic turbine, the connecting piece is in sealing connection with the wall surface of the connecting hole, and the connecting piece can rotate relative to the connecting hole.
3. The fluid dynamic conduit of claim 2, wherein the connection between the driving magnetic turbine and the driven magnetic turbine is achieved by at least one of a snap fit, a weld, and a threaded connection, wherein the connection between the driving magnetic turbine and the driven magnetic turbine is sealingly connected to the wall of the connection hole, and wherein the connection between the driving magnetic turbine and the driven magnetic turbine is rotatable relative to the connection hole.
4. The fluid dynamic conduit of claim 1, wherein the driven magnetic turbine is magnetically attracted to an end of the driving magnetic turbine that is adjacent to the driven magnetic turbine.
5. The fluid power conduit according to claim 4, wherein one end of the driving magnetic turbine, which is close to the driven magnetic turbine, is provided with a driving disk, a plurality of N-pole blocks and a plurality of S-pole blocks are arranged on the driving disk, the N-pole blocks and the S-pole blocks of the driving disk are alternately arranged along the circumferential direction of the driving disk, one end of the driven magnetic turbine, which is close to the driving magnetic turbine, is provided with a driven disk, a plurality of N-pole blocks and a plurality of S-pole blocks are arranged on the driven disk, the N-pole blocks and the S-pole blocks of the driven disk are alternately arranged along the circumferential direction of the driven disk, the N-pole blocks of the driving disk correspond to the S-pole blocks of the driven disk, and the S-pole blocks of the driving disk correspond to the N-pole blocks of the driven disk.
6. The fluid power conduit according to any one of claims 1-5, wherein the fluid power conduit comprises a first rotational speed detection element provided to the drive housing, the first rotational speed detection element being adapted to detect a rotational speed of the driven magnetic turbine.
7. The fluid power conduit according to any one of claims 1 to 5, wherein the fluid power conduit comprises a second rotational speed detection element provided to the drive housing, the second rotational speed detection element being adapted to detect a rotational speed of the active magnetic turbine.
8. The hydrodynamic catheter of any one of claims 1 to 5, wherein the catheter comprises a proximal tube and an elastic member, wherein:
the elastic piece is sleeved on the outer wall surface of the proximal tube; or alternatively, the first and second heat exchangers may be,
the near tube is sleeved outside the elastic piece; or alternatively, the first and second heat exchangers may be,
an installation space is formed in the wall surface of the proximal tube, and the elastic piece is installed in the installation space.
9. The fluid power conduit according to any one of claims 1 to 5, wherein a support plate is disposed in the mounting cavity, the support plate is disposed between the conduit and the driven magnetic turbine, a through hole is disposed in the support plate, one end of the driven magnetic turbine is rotatably connected to the support plate, and the other end of the driven magnetic turbine is rotatably connected to the sealing partition.
10. The fluid dynamic tube of any one of claims 1 to 5, wherein the inner wall surface of said mounting cavity is provided with a rotating groove matching said driven magnetic turbine, said driven magnetic turbine being slidably connected to said rotating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310694297.5A CN116421879A (en) | 2023-06-13 | 2023-06-13 | Hydrodynamic catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310694297.5A CN116421879A (en) | 2023-06-13 | 2023-06-13 | Hydrodynamic catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116421879A true CN116421879A (en) | 2023-07-14 |
Family
ID=87091143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310694297.5A Pending CN116421879A (en) | 2023-06-13 | 2023-06-13 | Hydrodynamic catheter |
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| Country | Link |
|---|---|
| CN (1) | CN116421879A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254598A (en) * | 1999-12-21 | 2000-05-31 | 马惠生 | Transplanted endarterial miniature auxiliary circulating device of ventricle |
| US20170340789A1 (en) * | 2016-05-27 | 2017-11-30 | Yale University | Cavo-arterial pump |
| US20180010608A1 (en) * | 2006-01-13 | 2018-01-11 | Heartware, Inc. | Hydrodynamic thrust bearings for rotary blood pump |
| US20190275224A1 (en) * | 2018-03-09 | 2019-09-12 | Boston Scientific Scimed, Inc. | Magnetic coupler for hemostatic rotor sealing |
| CN114364429A (en) * | 2019-04-10 | 2022-04-15 | 好心公司 | Output pivot for magnetically coupled cardiac pump |
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2023
- 2023-06-13 CN CN202310694297.5A patent/CN116421879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254598A (en) * | 1999-12-21 | 2000-05-31 | 马惠生 | Transplanted endarterial miniature auxiliary circulating device of ventricle |
| US20180010608A1 (en) * | 2006-01-13 | 2018-01-11 | Heartware, Inc. | Hydrodynamic thrust bearings for rotary blood pump |
| US20170340789A1 (en) * | 2016-05-27 | 2017-11-30 | Yale University | Cavo-arterial pump |
| US20190275224A1 (en) * | 2018-03-09 | 2019-09-12 | Boston Scientific Scimed, Inc. | Magnetic coupler for hemostatic rotor sealing |
| CN114364429A (en) * | 2019-04-10 | 2022-04-15 | 好心公司 | Output pivot for magnetically coupled cardiac pump |
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