A deformable back vane structure and artificial heart

Abstract

The application discloses a deformable back guide vane structure and an artificial heart, wherein the deformable back guide vane structure comprises a back guide vane shell with a circular tube-shaped inner wall structure; a back guide vane shaft is coaxially arranged in the back guide vane shell; two or more back guide vanes are uniformly arranged in a space formed between the back guide vane shaft and the back guide vane shell; and an electromagnetic device is arranged outside the back guide vane shell; wherein the inner side of the back end of the back guide vane is fixedly connected to the back guide vane shaft, the outer side of the back end is fixedly connected to the inner wall of the back guide vane shell, the front end of the back guide vane is a free end, and the connecting part of the front end and the back end of the back guide vane can be elastically deformed. The back guide vane is designed to be permanent magnetized or magnetically conductive on the back guide vane structure, so that the front end of the back guide vane is deflected at a certain angle under the action of a direct-current electromagnetic field, thereby the helix angle of the front end of the back guide vane can be adjusted, and the flow rate through the back guide vane can be controlled.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a deformable rear guide vane structure and an artificial heart. Background Technology

[0002] The shapes of existing artificial hearts, whether they are anterior or posterior guide vanes, are fixed, so it is impossible to control blood flow by adjusting the shape of the anterior or posterior guide vanes. Summary of the Invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a deformable rear guide vane structure and an artificial heart, thereby achieving the purpose of blood flow control by controlling the shape of the rear guide vane structure.

[0004] To solve the above-mentioned technical problems, the present invention provides a deformable rear guide vane structure, comprising:

[0005] The rear guide vane housing has a cylindrical inner wall structure;

[0006] The rear guide vane shaft is coaxially arranged inside the rear guide vane housing;

[0007] Two or more rear guide vanes are evenly arranged in the space formed between the rear guide vane shaft and the rear guide vane housing, and the front end of the rear guide vane is made of magnetic material or permanent magnet material.

[0008] An electromagnetic device is disposed outside the rear guide vane housing and corresponds to the front end of the rear guide vane;

[0009] The rear inner side of the rear guide blade is fixedly connected to the rear guide blade shaft, and the rear outer side is fixedly connected to the inner wall of the rear guide blade housing. The front end of the rear guide blade is a free end, and the connection between the front and rear ends of the rear guide blade can be elastically deformed.

[0010] The front end of the rear guide vane is helical; the rear end of the rear guide vane is straight and is arranged along the axial direction of the rear guide vane shaft.

[0011] The electromagnetic device adopts a DC coil structure.

[0012] The number of electromagnetic devices is the same as the number of rear guide vanes, and their positions correspond one-to-one.

[0013] When the leading edge of the rear guide vane is made of permanent magnet material, the distance between one magnetic pole of the permanent magnet material and the corresponding electromagnetic device is less than the distance between the other magnetic pole and the corresponding electromagnetic device.

[0014] The two magnetic poles of the electromagnetic device are arranged circumferentially along the rear guide vane housing, and each electromagnetic device is arranged between two adjacent rear guide vanes.

[0015] The rear guide vane is made of magnetic steel sheet, the front end of which is pre-formed into a spiral shape and the rear end of which is pre-formed into a straight sheet.

[0016] The present invention also provides a deformable rear guide vane structure, comprising:

[0017] The rear guide vane housing has a cylindrical inner wall structure;

[0018] A rear guide vane shaft is coaxially arranged inside the rear guide vane housing, and a mandrel is provided at the front end of the rear guide vane shaft. A rotating component is mounted on the mandrel, and a distance is maintained between the rotating component and the inner wall of the rear guide vane housing.

[0019] The rear guide vane is fixedly connected between the rear guide vane shaft and the inner wall of the rear guide vane housing;

[0020] The rotating guide vane is fixedly connected to the rotating component and can rotate with the rotating component;

[0021] An electromagnetic device is disposed outside the rear guide vane housing and corresponds to the position of the rotating rear guide vane;

[0022] At least some of the rotating rear guide vanes are made of magnetically conductive or permanent magnet materials.

[0023] The rotating rear guide vane is helical in shape, and the fixed rear guide vane is linear in shape; the number of the rotating rear guide vane and the fixed rear guide vane are the same, and they are evenly distributed in the circumferential direction.

[0024] During the rotation of the rotating rear guide vane, it can connect with the fixed rear guide vane.

[0025] The electromagnetic device adopts a DC coil structure.

[0026] The present invention also provides an artificial heart, including the deformable rear guide vane structure described above.

[0027] The artificial heart also includes an impeller mounted on an impeller shaft, the rear end of which is connected to the rear guide vane shaft, and the front end of the rear guide vane is arranged outside the rear end of the impeller shaft.

[0028] The artificial heart also includes a power supply and a controller. The power supply is connected to the electromagnetic device through the controller. The power supply is a DC power supply, and the controller is used to control the current of the electromagnetic device.

[0029] Implementing this invention has the following beneficial effects:

[0030] This invention provides a deformable rear guide vane structure and an artificial heart. By designing permanent magnet or magnetically conductive rear guide vanes on the rear guide vane structure, the front end of the rear guide vane can be deflected at a certain angle under the action of a DC electromagnetic field, thereby adjusting the helical angle of the front end of the rear guide vane and controlling the flow rate through the rear guide vane.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0033] Figure 1 This is a schematic diagram of the deformable rear guide vane structure in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the first state of the guide vane in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the second state of the guide vane in an embodiment of the present invention;

[0036] Figure 4 This is another structural schematic diagram of the deformable rear guide vane structure in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the deformable rear guide vane structure in use in an embodiment of the present invention;

[0038] Figure 6 This is an assembly diagram of the deformable rear guide vane structure in an embodiment of the present invention.

[0039] The reference numerals in the figure:

[0040] 1-Rear guide vane housing; 2-Rear guide vane shaft; 21-Mandrel; 22-Rotating component; 3-Rear guide vane; 31-Fixed rear guide vane; 32-Rotating rear guide vane; 4-Electromagnetic device. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] like Figure 1-3 As shown, this embodiment provides a deformable rear guide vane structure for use in the rear guide vane portion of an artificial heart. The deformable rear guide vane structure provided in this embodiment includes a rear guide vane housing 1, a rear guide vane shaft 2, a rear guide vane blade 3, and an electromagnetic device 4. The rear guide vane housing 1 has a cylindrical inner wall structure, providing external support for the entire rear guide vane structure and forming a blood flow channel through its cylindrical inner wall. The rear guide vane shaft 2 is coaxially arranged within the rear guide vane housing 1, thereby forming a cavity structure between the rear guide vane shaft 2 and the rear guide vane housing 1, allowing the rear guide vane 3 to... The rear guide vane is installed therein and fixed to the rear guide vane shaft 2 by the rear guide vane 3, so that the rear guide vane shaft provides rear support for the impeller shaft of the artificial heart; the rear guide vane 3 is usually arranged in 2-4 evenly distributed, preferably 3 rear guide vane 3. The rear guide vane 3 is evenly arranged in the space formed between the rear guide vane shaft 2 and the rear guide vane housing 1. The front end of the rear guide vane 3 is made of magnetic conductive material or permanent magnet material, so that the front end of the rear guide vane 3 will deform under the action of magnetic force in the magnetic field; the electromagnetic device 4 is set outside the rear guide vane housing 1 and corresponds to the front end of the rear guide vane 3. The electromagnetic device 4 mainly generates a magnetic field when energized, usually using direct current, and the direction of the direct current can be selected as positive or negative according to the needs of use;

[0045] The rear inner side of the rear guide blade 3 is fixedly connected to the rear guide blade shaft 2, and the rear outer side is fixedly connected to the inner wall of the rear guide blade housing 1. The front end of the rear guide blade 3 is a free end, and the connection between the front and rear ends of the rear guide blade 3 is elastically deformable. The rear end of the rear guide blade 3 serves to connect the rear guide blade housing 1 and the rear guide blade shaft 2, and provides support for the rear guide blade shaft 2. The front end of the rear guide blade 3 can change position with the elastic deformation of the connection, thereby allowing the rear guide blade 3 to change the helical angle under the action of magnetic force.

[0046] In this embodiment, a permanent magnet or magnetically conductive rear guide blade 3 is designed on the rear guide blade structure, so that the front end of the rear guide blade 3 is deflected at a certain angle under the action of a DC electromagnetic field, thereby adjusting the helical angle of the front end of the rear guide blade 3 and controlling the flow rate through the rear guide blade 3.

[0047] The front end of the rear guide vane 3 is spiral-shaped, which allows it to better receive the swirling blood transported by the impeller at the front end; the rear end of the rear guide vane 3 is straight-shaped and arranged along the axial direction of the rear guide vane shaft 2, so that the blood is transported along the rear guide vane 3 and output as an approximately straight fluid.

[0048] The electromagnetic device 4 adopts a DC coil structure. The DC coil can be arranged along the axial direction of the rear guide vane shaft 2 or along the circumferential direction of the rear guide vane housing 1.

[0049] The number of electromagnetic devices 4 is the same as the number of rear guide blades 3, and their positions correspond one-to-one. Typically, one electromagnetic device 4 is placed on one side of each rear guide blade 3. When energized, the electromagnetic device 4 generates a magnetic field, which, under the influence of the magnetic field, causes the leading edge of the rear guide blade 3 to deflect, thereby controlling the helical angle of the leading edge of the rear guide blade 3. It should be noted that the rear guide blades 3 and electromagnetic devices 4 are not arranged in a one-to-one direct correspondence, but rather should be arranged at a certain distance from each other, so that the rear guide blades 3 experience an unbalanced force under the action of the electromagnetic device 4, resulting in deformation.

[0050] When the leading edge of the rear guide vane 3 is made of permanent magnet material, the distance between one magnetic pole of the permanent magnet material and the corresponding electromagnetic device is smaller than the distance between the other magnetic pole and the corresponding electromagnetic device. This allows one of the magnetic poles to be closer to the magnetic pole of the electromagnetic device 4, and the magnetic force it experiences is greater, meaning that the leading edge of the rear guide vane 3 can be driven to deflect by attraction or repulsion.

[0051] The two magnetic poles of the electromagnetic device 4 are arranged circumferentially along the shell of the rear guide vane, and each electromagnetic device 4 is arranged between two adjacent rear guide vanes 3. In this arrangement, the two magnetic poles of the electromagnetic device are staggered, which allows the rear guide vane 3 to be pushed away from the electromagnetic device 4 when it is subjected to a stronger magnetic repulsion from the adjacent electromagnetic device 4. The repulsive magnetic force gradually weakens, but the attractive magnetic force from the other electromagnetic device 4 gradually strengthens, thus achieving a superposition of repulsive and attractive forces.

[0052] The rear guide vane 3 is made of magnetic steel sheet, the front end of which is pre-formed into a spiral shape and the rear end of which is pre-formed into a straight sheet.

[0053] like Figure 4-6 As shown, this embodiment also provides a deformable rear guide vane structure, including a rear guide vane shell, a rear guide vane shaft 2, a fixed rear guide vane 31, a rotating rear guide vane 32, and an electromagnetic device 4. The rear guide vane shell has a tubular inner wall structure, providing external support for the entire rear guide vane structure and forming a blood flow channel through its tubular inner wall. The rear guide vane shaft 2 is coaxially arranged within the rear guide vane shell, thus forming a cavity structure between the rear guide vane shaft 2 and the rear guide vane shell. The rear guide vane shaft 2 has a mandrel 21 at its front end, and a rotating component 22 is mounted on the mandrel 21. A distance is maintained between the rotating component 22 and the inner wall of the rear guide vane housing. The diameter of the mandrel 21 is smaller than the diameter of the rear guide vane shaft 2, and the mandrel 21 is coaxially connected and fixed to the rear guide vane shaft 2. Typically, a shaft hole is machined at the center of the front end of the rear guide vane shaft 2 to facilitate the installation of the mandrel 21 in the shaft hole. The rotating component 22 is then mounted on the mandrel 21, so that the rotating component 22 can rotate around the mandrel 21.

[0054] The fixed rear guide vane 31 is fixedly connected between the rear guide vane shaft 2 and the inner wall of the rear guide vane housing; the rotating rear guide vane 32 is fixedly connected to the rotating component 22 and can rotate with the rotating component 22.

[0055] The electromagnetic device 4 is located outside the rear guide vane housing and corresponds to the position of the rotating rear guide vane. The electromagnetic device 4 mainly generates a magnetic field when energized, usually using direct current, and the direction of the direct current can be selected as positive or negative according to the needs of use; the electromagnetic device 4 adopts a direct current coil structure.

[0056] At least a portion of the rotating rear guide vane 32 is made of magnetically conductive or permanent magnet material. This allows the electromagnetic device to generate a magnetic field when energized, creating an attractive or repulsive force on the rotating rear guide vane 32, causing it to rotate around the spindle to a position of force equilibrium. After circumferential rotation, the relative positional relationship between the rotating rear guide vane 32 and the fixed rear guide vane 31 changes, thereby altering the blood flow resistance through the entire rear guide vane housing and achieving flow regulation and control.

[0057] The rotating rear guide vane 32 is helical in shape, and the fixed rear guide vane 31 is linear in shape; the number of rotating rear guide vanes 32 and fixed rear guide vanes 31 is the same, and they are evenly distributed in the circumferential direction. During the rotation of the rotating rear guide vane 32, it can engage with the fixed rear guide vane 31.

[0058] This embodiment also provides an artificial heart, including the deformable rear guide vane structure provided in the above embodiments. The artificial heart provided in this embodiment, by designing permanent magnet or magnetically conductive rear guide vanes 3 on the rear guide vane structure, allows the front end of the rear guide vane 3 to deflect at a certain angle under the action of a DC electromagnetic field, thereby adjusting the helical angle of the front end of the rear guide vane 3 and controlling the flow rate through the rear guide vane 3.

[0059] The artificial heart also includes an impeller mounted on an impeller shaft, the rear end of which is connected to the rear guide vane shaft, and the front end of the rear guide vane is arranged outside the rear end of the impeller shaft.

[0060] The artificial heart also includes a power supply and a controller. The power supply is connected to the electromagnetic device via the controller. The power supply is a DC power supply, and the controller is used to control the current of the electromagnetic device. By controlling the current in either the forward or reverse direction using the controller, two magnetic fields with different magnetic pole directions can be formed, allowing for a wider range of control over the guide vane 3 as needed.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A deformable back vane structure, characterized by, include: The rear guide vane housing has a cylindrical inner wall structure; The rear guide vane shaft is coaxially arranged inside the rear guide vane housing; Two or more rear guide vanes are evenly arranged in the space formed between the rear guide vane shaft and the rear guide vane housing, and the front end of the rear guide vane is made of magnetic material or permanent magnet material. An electromagnetic device is disposed outside the rear guide vane housing and corresponds to the front end of the rear guide vane; the electromagnetic device adopts a DC coil structure, which is arranged along the axial direction of the rear guide vane shaft or along the circumferential direction of the rear guide vane housing. The rear inner side of the rear guide blade is fixedly connected to the rear guide blade shaft, and the rear outer side is fixedly connected to the inner wall of the rear guide blade housing. The front end of the rear guide blade is a free end, and the connection between the front and rear ends of the rear guide blade can be elastically deformed. The two magnetic poles of the electromagnetic device are arranged circumferentially along the rear guide vane housing, and each electromagnetic device is arranged between two adjacent rear guide vanes.

2. The deformable rear guide vane structure according to claim 1, characterized in that, The front end of the rear guide vane is helical; the rear end of the rear guide vane is straight and is arranged along the axial direction of the rear guide vane shaft.

3. The deformable rear guide vane structure according to claim 1, characterized in that, The number of electromagnetic devices is the same as the number of rear guide blades, and their positions correspond one-to-one.

4. The deformable rear guide vane structure according to claim 1, characterized in that, When the leading edge of the rear guide vane is made of permanent magnet material, the distance between one magnetic pole of the permanent magnet material and the corresponding electromagnetic device is less than the distance between the other magnetic pole and the corresponding electromagnetic device.

5. The deformable rear guide vane structure according to claim 1, characterized in that, The rear guide vane is made of magnetic steel sheet, the front end of which is pre-formed into a spiral shape and the rear end of which is pre-formed into a straight sheet.

6. An artificial heart, characterized in that, Includes the deformable rear guide vane structure described in any one of claims 1-5 above.

7. The artificial heart according to claim 6, characterized in that, The artificial heart also includes an impeller mounted on an impeller shaft, the rear end of which is connected to the rear guide vane shaft, and the front end of the rear guide vane is arranged outside the rear end of the impeller shaft.

8. The artificial heart according to claim 6, characterized in that, The artificial heart also includes a power supply and a controller. The power supply is connected to the electromagnetic device through the controller. The power supply is a DC power supply, and the controller is used to control the current of the electromagnetic device.

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