Ophthalmic ultrasonic imaging scanning device

Abstract

This application relates to an ophthalmic ultrasound imaging scanning device, comprising an active structure and a driven structure. The active structure includes: a first base; a drive member connected to the first base; a transmission structure connected to the drive member; and a first magnet connected to the transmission structure, which reciprocates under the action of the drive member and the transmission structure. The driven mechanism includes: a second base and a sealed chamber within it; a second magnet opposite to and spaced apart from the first magnet, the second magnet being of opposite polarity; and a transducer connected to the second magnet, both located within the chamber. The transducer reciprocates synchronously with the first magnet under the mutual attraction between the two. This scanning device achieves the reciprocating motion of the transducer through magnetic attraction, preventing the drive mechanism from penetrating the sealed chamber, thereby reducing the risk of leakage, lowering vibration noise, and improving the reliability and imaging clarity of the device.

Description

Technical Field

[0001] This application relates to the field of ophthalmic ultrasound technology, and in particular to an ophthalmic ultrasound imaging scanning device. Background Technology

[0002] As a key tool in the field of ophthalmic diagnosis, ophthalmic ultrasound biomicroscopy can acquire high-resolution images of areas that are difficult to reach with traditional optical examinations of the living human eye, especially deep structures such as the anterior chamber angle and ciliary body, providing important evidence for the precise diagnosis and treatment of eye diseases such as glaucoma and iris tumors.

[0003] The core component of this device is an ultra-high frequency ultrasound probe, which operates in a water bath environment composed of physiological saline or coupling agent using an ultra-high frequency ultrasound transducer. During the examination, the transducer needs to perform precise reciprocating scanning movements via a drive mechanism to cover the target eye tissue area. Because the transducer's movement trajectory is extremely close to the surface of the eyeball, there is a potential risk of mechanical contact. Current technologies generally encapsulate the entire transducer within a sealed chamber to ensure patient safety through physical isolation.

[0004] However, this encapsulation scheme necessitates that the external drive mechanism penetrate the chamber wall to transmit power, resulting in an exceptionally complex transmission structure design. Specifically, minute gaps can easily form at the connection between the drive component and the sealed chamber, making it difficult to maintain a completely sealed state of the chamber during long-term operation. This can lead to problems such as liquid leakage, corrosion of internal components, or contamination of the coupling medium. Furthermore, the complex power transmission path increases mechanical vibration and motion noise, affecting imaging clarity and equipment stability. Summary of the Invention

[0005] In view of this, the present application provides an ophthalmic ultrasound imaging scanning device to solve at least one problem existing in the background art.

[0006] This application provides an ophthalmic ultrasound imaging scanning device, which includes an active structure and a driven structure; wherein the active structure includes: First base; A driving element is connected to the end of the first base away from the driven structure; A transmission structure is connected to the driving component in a transmission manner; A first magnet is connected to the transmission structure, and the first magnet reciprocates under the action of the driving component and the transmission structure. The driven mechanism includes: A second base is connected to the first base, and the second base has a sealed chamber inside; The second magnet is positioned opposite to and spaced apart from the first magnet, and the second magnet and the first magnet are of opposite polarity. A transducer is connected to the second magnet, and both are located within the cavity; The transducer reciprocates synchronously with the second magnet and the first magnet under the mutual attraction between them.

[0007] In conjunction with a first aspect of this application, in an optional embodiment, the active structure includes a plurality of first magnets, and the driven structure includes a plurality of second magnets and a plurality of transducers, wherein the number of first magnets, second magnets and transducers corresponds.

[0008] In conjunction with the first aspect of this application, in an optional embodiment, the transmission structure includes: A cam element is connected to the output shaft of the drive element, and the cam element rotates around the axis of the output shaft under the driving action of the drive element; A sliding assembly, wherein multiple sliding assemblies are evenly distributed circumferentially around the axis of the output shaft, each sliding assembly is connected to a first magnet, and the sliding assembly is movably connected to the cam component; Guide member, the sliding assembly reciprocates in one direction under the guidance of the guide member; The first magnet reciprocates along the guide along the sliding component under the rotation of the cam component.

[0009] In conjunction with the first aspect of this application, in an optional embodiment, the transmission structure further includes: An elastic element is connected between adjacent sliding components so that the sliding components move toward the cam component.

[0010] In conjunction with the first aspect of this application, in an alternative embodiment, the sliding component includes: The slider is slidably connected to the guide member, and the first magnet is connected to the slider; A rolling element, connected to the slider and located between the cam and the first magnet, contacts the side wall of the cam under the action of the elastic element.

[0011] In conjunction with a first aspect of this application, in an alternative embodiment, the thickness of the cam member is greater than or equal to the thickness of the rolling member.

[0012] In conjunction with the first aspect of this application, in an optional embodiment, the number of the first magnet and the second magnet is four, the transmission structure is a cross-shaped symmetrical structure, and the cam is located at the center of the cross-shaped symmetrical structure.

[0013] In conjunction with the first aspect of this application, in an optional embodiment, the driven structure further includes: The guide optical axis extends in the same direction as the movement direction of the first magnet, and both the second magnet and the transducer can reciprocate along the guide optical axis.

[0014] In conjunction with the first aspect of this application, in an optional embodiment, the driven structure further includes: The mounting base is slidably connected to the guide optical axis, and the second magnet and the transducer are respectively mounted at both ends of the mounting base.

[0015] In conjunction with the first aspect of this application, in an optional embodiment, the driven structure further includes: The bottom cover is sealed to the end of the second base away from the first base; A sound-guiding diaphragm is sealed to the end of the base away from the second base, such that the sound-guiding diaphragm, the base, and the second base form a sealed chamber.

[0016] The ophthalmic ultrasound imaging scanning device provided in this application includes an active structure and a driven structure. The transducer reciprocates by magnetic attraction, which can prevent the drive mechanism from penetrating the sealed chamber, thereby reducing the risk of leakage, reducing vibration and noise, and improving the reliability and imaging clarity of the device.

[0017] Additional aspects and advantages of this 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 this application. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the ophthalmic ultrasound imaging scanning device provided in the embodiments of this application; Figure 2 This is an exploded view of the structure of the ophthalmic ultrasound imaging scanning device provided in the embodiments of this application; Figure 3 A cross-sectional view of an ophthalmic ultrasound imaging scanning device provided in an embodiment of this application; Figure 4 A three-dimensional structural diagram of the active structure in the ophthalmic ultrasound imaging scanning device provided in the embodiments of this application; Figure 5 A cross-sectional view of the active structure in the ophthalmic ultrasound imaging scanning device provided in the embodiments of this application; Figure 6 An exploded view of the active structure in the ophthalmic ultrasound imaging scanning device provided in the embodiments of this application; Figure 7 A top view of the active structure in the ophthalmic ultrasound imaging scanning device provided in the embodiments of this application; Figure 8 A schematic diagram of the internal structure of the driven structure in the ophthalmic ultrasound imaging scanning device provided in an embodiment of this application; Figure 9 An exploded view of the driven structure in the ophthalmic ultrasound imaging scanning device provided in the embodiments of this application.

[0019] Figure label: 100. Scanning device; 10. Active structure; 11. First base; 12. Driving component; 121. Output shaft; 13. Transmission structure; 131. Cam component; 132. Sliding assembly; 133. Guide component; 134. Elastic component; 135. Rolling component; 136. Slider; 137. Adapter block; 14. First magnet; 20. Passive structure; 21. Second base; 211. Chamber; 22. Second magnet; 23. Transducer; 24. Guide optical axis; 25. Mounting base; 26. Base cover; 27. Sound guide diaphragm; 281. Mounting shaft; 282. Mounting bracket; 29. ​​Sealing ring. Detailed Implementation

[0020] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0021] In the description of this invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limiting this invention.

[0022] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature above second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0025] Please refer to Figures 1 to 5 This application provides an ophthalmic ultrasound imaging scanning device 100, which includes an active structure 10 and a driven structure 20. The active structure 10 is the part of the device responsible for generating and transmitting driving force, and its main function is to convert external power into controllable reciprocating motion. The driven structure 20 is the part of the device that receives the power transmitted by the active structure 10 and performs a specific scanning task, and its core feature is to achieve motion in a sealed environment.

[0026] Specifically, the active structure 10 includes a first base 11, a driving element 12, a transmission structure 13, and a first magnet 14.

[0027] The first base 11 serves as a support member for the active structure 10, fixing the driving component 12 and the transmission structure 13, and providing a stable working platform. The driving component 12 is connected to the end of the first base 11 furthest from the driven structure 20, providing initial mechanical power. The driving component 12 can be a stepper motor or a servo motor, and its output shaft 121 is configured for rotary motion. The transmission structure 13 is connected to the driving component 12, converting the rotary or linear motion of the driving component 12 into the reciprocating motion of the first magnet 14. The first magnet 14 is connected to the transmission structure 13, and under the action of the driving component 12 and the transmission structure 13, the first magnet 14 is driven to perform periodic reciprocating motion, thereby generating a dynamically changing magnetic field.

[0028] The driven structure 20 includes a second base 21, a second magnet 22, and a transducer 23. The second base 21 is positioned relative to the first base 11 by pins and secured with screws; however, the securing method is not limited to these. The second base 21 has a sealed chamber 211, which can be formed by machining the second base 21 body into a hollow structure and using other sealing components. The second magnet 22 is positioned opposite the first magnet 14 with a certain gap, and the two are set as opposite magnets to ensure mutual attraction. The transducer 23 is connected to the second magnet 22, and both are housed within the sealed chamber 211.

[0029] The transducer 23 is the core component of ultrasound imaging. After receiving the driving force, it reciprocates to emit and receive ultrasound waves, thereby acquiring eye image information.

[0030] For example, the first magnet 14 is an S-pole magnet and the second magnet 22 is an N-pole magnet; or the first magnet 14 is an N-pole magnet and the second magnet 22 is an S-pole magnet.

[0031] When the first magnet 14 in the active structure 10 reciprocates under the action of the driving member 12 and the transmission structure 13, the dynamic magnetic field it generates acts on the second magnet 22 in the driven structure 20. Since the first magnet 14 and the second magnet 22 are opposite magnets, they generate a continuous magnetic attraction. This allows the second magnet 22 to be pulled by the first magnet 14, thus reciprocating synchronously with the trajectory of the first magnet 14. Since the transducer 23 is connected to the second magnet 22 and located inside the chamber 211, the transducer 23 also reciprocates, thereby realizing the ultrasonic scanning function. This magnetically coupled driving method can avoid any structure that physically penetrates the wall of the sealed chamber 211, while effectively ensuring the sealing integrity of the chamber 211.

[0032] The scanning device 100 described above, by employing a magnetically coupled contactless drive method, effectively solves the problem of maintaining a tight seal when driving the transducer 23 to reciprocate within a sealed chamber 211, a problem inherent in traditional technologies. As a result, the transducer 23 can perform stable and precise reciprocating scans within the completely sealed chamber 211, avoiding physical penetration of the chamber's sealing structure by the drive mechanism. This ensures the long-term reliability and safety of the scanning device 100 in specific working environments such as water baths, and further provides clear and uncontaminated image data for ophthalmic ultrasound imaging. Furthermore, the magnetically coupled contactless drive method significantly reduces wear and movement uncertainty between components, lowers noise and vibration during scanning, ensures highly stable movement, and improves space utilization.

[0033] In an optional embodiment, the active structure 10 includes a plurality of first magnets 14, and the driven structure 20 includes a plurality of second magnets 22 and a plurality of transducers 23, the number of first magnets 14, second magnets 22 and transducers 23 corresponding to each other.

[0034] The multiple first magnets 14 can be arranged in a straight line to form a linear drive array; they can also be evenly distributed along a circular or elliptical trajectory to form a ring drive array; or they can be arranged in other geometric configurations. Their function is to provide a multi-point or multi-region magnetic drive source to achieve broader or finer scanning control. The driven structure 20 is provided with multiple second magnets 22 and multiple transducers 23, that is, there are two or more second magnets 22 and transducers 23 corresponding to the number of these second magnets 22. Each second magnet 22 can be closely connected to a transducer 23 to form an independent scanning unit.

[0035] This embodiment of the application, by setting multiple first magnets 14, multiple second magnets 22, and multiple transducers 23 in a corresponding manner, can significantly expand the scanning coverage of ultrasound imaging. Multiple transducers 23 can scan different areas simultaneously or sequentially, thereby acquiring more comprehensive eye image data within the same time frame and improving imaging efficiency.

[0036] In one alternative embodiment, please refer to Figures 3 to 6The transmission structure 13 includes a cam 131, a sliding assembly 132, and a guide 133. The cam 131 is connected to the output shaft 121 of the drive member 12, and rotates around the axis of the output shaft 121 under the drive of the drive member 12. Multiple sliding assemblies 132 are evenly distributed circumferentially around the axis of the output shaft 121, and each sliding assembly 132 is connected to a first magnet 14. The sliding assembly 132 is movably connected to the cam 131. The guide 133 is slidably connected to the sliding assembly 132; the first magnet 14 reciprocates along the guide 133 following the sliding assembly 132 under the rotation of the cam 131.

[0037] The cam component 131 is a mechanical element with a specific shaped profile on its surface. Through contact with the sliding component 132, it converts rotational motion into reciprocating motion of the sliding component 132. The profile of the cam component 131 can precisely control the motion trajectory of the sliding component 132. The profile of the cam component 131 is not specifically limited and can be set according to requirements. The cam component 131 can convert the continuous rotational motion of the drive component 12 into reciprocating motion with a specific motion law, providing precise motion input for the subsequent transmission chain.

[0038] The guide component 133 can be a slide rail, which is a linear guide mechanism used to limit the movement direction of the sliding component 132 and ensure that it reciprocates along a preset straight path. The slide rail may include, but is not limited to, linear bearings, dovetail guide rails, or precision guide grooves machined on the base.

[0039] The design of multiple sliding components 132 evenly distributed circumferentially in this embodiment allows opposing impact forces to self-cancel, improving shock resistance and significantly reducing vibration and impact generated during high-speed reciprocating motion, thereby improving the motion balance and stability of the entire device. Furthermore, the resultant force is always along the direction of motion, reducing wear and motion uncertainty while improving space utilization. Additionally, acceleration and deceleration exert minimal force on the motor shaft, ensuring motion accuracy. The guide 133 provides precise linear guidance for the sliding components 132, ensuring the straightness and accuracy of the reciprocating motion of the first magnet 14. The synergistic effect of the cam 131, sliding components 132, and guide 133 ensures that the first magnet 14 reciprocates efficiently, smoothly, and controllably, thereby achieving synchronous reciprocating scanning of the transducer 23 within the sealed chamber 211 via stable magnetic force. This not only improves the overall reliability and service life of the ophthalmic ultrasound imaging scanning device 100 but also provides a stable motion foundation for obtaining high-quality ultrasound imaging.

[0040] In one alternative embodiment, please continue to refer to Figures 3 to 6 The transmission structure 13 also includes an elastic element 134, which is connected between adjacent sliding components 132 so that the sliding components 132 move toward the cam component 131.

[0041] In this embodiment, the elastic element 134 is a mechanical component capable of deforming under external force and returning to its original shape after the external force is removed. It is mainly used to provide restoring force or preload. The elastic element 134 can be a helical spring, a compression spring, or a tension spring, depending on the requirements. This embodiment does not impose specific limitations.

[0042] In this embodiment, by connecting the elastic element 134 between adjacent sliding components 132, a preload force towards the cam element 131 can be continuously applied to the sliding component 132. This preload force effectively eliminates any gaps that may exist between the sliding component 132 and the cam element 131, ensuring that they remain in close contact throughout the entire movement. In this way, the rotational motion of the cam element 131 can be transmitted to the sliding component 132 more accurately and stably, driving the first magnet 14 to reciprocate. This not only significantly improves the efficiency and accuracy of motion transmission but also reduces impact and wear caused by gaps, greatly reducing noise that may be generated during transmission; and further enhances the stability and reliability of the entire transmission structure 13, while ensuring a more precise motion trajectory of the transducer 23 during scanning, thereby improving the quality of ocular ultrasound imaging.

[0043] In one alternative embodiment, please continue to refer to Figures 3 to 6 The sliding assembly 132 includes a slider 136 and a roller 135. The slider 136 is slidably connected to the guide 133, and the first magnet 14 is connected to the slider 136. The roller 135 is connected to the slider 136 and is located between the cam 131 and the first magnet 14. The roller 135 contacts the side wall of the cam 131 under the action of the elastic member 134.

[0044] The rolling element 135 is a mechanical component capable of transmitting force or guiding motion through rolling contact, which can reduce frictional resistance and improve motion efficiency. The rolling element 135 can be a roller, cylindrical or conical in shape; it can also be a ball. The specific form of the rolling element 135 can be selected according to requirements, and this embodiment does not impose specific limitations. Of course, the rolling element 135 is usually made of high-hardness, wear-resistant materials, such as bearing steel or ceramics. For example, the rolling element 135 can be mounted on a pre-set pin or bracket on the slider 136, allowing it to rotate freely.

[0045] The rolling element 135 in this embodiment can convert sliding friction into rolling friction, thereby greatly reducing the coefficient of friction during transmission, significantly reducing energy loss, and improving transmission efficiency. In addition, the rolling element 135 can also make the direct contact between the cam element 131 and the sliding component 132 smoother, greatly reducing possible jamming or impact, and greatly improving the smoothness of movement of the transmission structure 13.

[0046] In one alternative embodiment, please continue to refer to Figures 3 to 6 The sliding assembly 132 also includes an adapter block 137, which connects the slider 136 and the first magnet 14. The rolling element 135 is connected to the adapter block 137. The adapter block 137, as an intermediate connector, improves the ease of installation of the first magnet 14 and the rolling element 135. Typically, the guide element 133 and the slider 136 are standard components. Using the adapter block 137 to connect the slider 136 to the first magnet 14 and the rolling element 135 improves the assembly efficiency and connection stability of the device.

[0047] In an optional embodiment, the thickness of the cam member 131 is greater than or equal to the thickness of the rolling member 135. Specifically, the thickness of the cam member 131 refers to the dimension of the cam member 131 along its axis of rotation, while the thickness of the rolling member 135 refers to the dimension of the rolling member 135 along its contact surface with the cam member 131.

[0048] In this embodiment, the thickness of the cam 131 is set to be no less than the thickness of the rolling element 135. During transmission, the rolling element 135 can obtain the maximum support area and contact strength, greatly reducing the increase in gap or sliding friction caused by thickness difference. This ensures that the rolling element 135 can always be firmly and fully abutted against the side wall of the cam 131 under the action of the elastic element 134, and further greatly reduces the instability of movement caused by thickness mismatch.

[0049] In one alternative embodiment, please refer to Figure 6 and Figure 7 The number of first magnet 14 and second magnet 22 are both four. The transmission structure 13 has a cross-shaped symmetrical structure, and the cam 131 is located at the center of the cross-shaped symmetrical structure.

[0050] This can be understood as follows: the device also has four transducers 23, which are arranged in a cross-symmetric structure. Regardless of whether the four transducers 23 are in motion or stationary, the sum of the preload forces on the sliding components 132 is always along the central axis of the output shaft 121 of the drive member 12, that is, the center position of the cam member 131. It can also be understood that the rotation axis of the cam member 131 coincides with the geometric center of the cross-symmetric structure. For example, the cam member 131 is directly mounted on the output shaft 121 of the drive member 12, and the output shaft 121 is precisely located at the intersection of the cross-symmetric structure, ensuring that when the cam member 131 rotates, the driving force of each sliding component 132 can be uniformly transmitted from a stable central point, further enhancing the overall stability of the transmission system.

[0051] Please refer to Figure 7The preload of the relatively set sliding components 132 is opposite in direction and equal in magnitude. The opposing forces during the movement can cancel each other out, improving shock resistance and thus ensuring movement stability, while also improving space utilization. In addition, the resultant force is always along the direction of movement, reducing wear and movement uncertainty. Figure 7 The diagram shows the preload force on the four rolling elements 135, where F1 and F2 are equal in magnitude and opposite in direction, i.e., F1+F2=0; F3 and F4 are equal in magnitude and opposite in direction, i.e., F3+F4=0.

[0052] This embodiment of the application significantly optimizes the dynamic balance of the transmission system by setting the number of first magnets 14 and second magnets 22 to four, making the transmission structure 13 cross-symmetrical, and placing the cam 131 at the center of the cross-symmetrical structure. This allows for a more uniform distribution and transmission of forces acting on each sliding component 132 and the first magnet 14 when the drive member 12 drives the cam 131 to rotate, greatly reducing vibrations caused by imbalances in the transmission structure 13 and improving the overall operational stability of the ophthalmic ultrasound imaging scanning device 100. Simultaneously, the reduced vibration decreases wear on internal components, extending their service life and helping to maintain the integrity and sealing of the sealed chamber 211 inside the second base 21, ensuring that the transducer 23 scans in a safe and stable environment, and further improving the accuracy and reliability of imaging.

[0053] In one alternative embodiment, please refer to Figure 3 , Figure 8 and Figure 9 The driven structure 20 also includes a guide optical axis 24, the extension direction of which is consistent with the movement direction of the first magnet 14, and both the second magnet 22 and the transducer 23 can reciprocate along the guide optical axis 24.

[0054] In this embodiment, the guide optical shaft 24 is a mechanical component capable of providing precise linear motion guidance, ensuring that the moving component moves smoothly and accurately along a predetermined straight path, thereby reducing friction and motion deviation. The guide optical shaft 24 can be a solid cylindrical rod made of high-precision ground stainless steel or ceramic material, with a smooth surface, high hardness, and wear resistance, providing low-friction linear guidance.

[0055] In this embodiment, the guide optical axis 24 provides a stable linear motion trajectory for the second magnet 22 and the transducer 23. When the first magnet 14 in the active structure 10 reciprocates under the action of the drive member 12 and the transmission structure 13, the second magnet 22 and the transducer 23 in the driven structure 20 are synchronously driven by magnetic attraction. During this process, the guide optical axis 24 ensures that the second magnet 22 and the transducer 23 move precisely along a preset straight path, effectively avoiding lateral swaying or movement deviation.

[0056] Since the extension direction of the guide optical axis 24 is consistent with the movement direction of the first magnet 14, a high degree of consistency in the movement direction can be ensured, which can greatly improve the scanning accuracy and image quality of ultrasound imaging, because the transducer 23 can always operate within the optimal scanning plane. At the same time, this stable guiding mechanism can effectively protect the integrity of the sealed chamber 211, greatly reduce wear or sealing failure caused by the unstable movement of the second magnet 22 and the transducer 23, extend the service life of the ophthalmic ultrasound imaging scanning device 100, and ensure safety and reliability during ophthalmic examinations.

[0057] In an optional embodiment, the driven structure 20 further includes a mounting base 25, which is slidably connected to the guide optical axis 24, and the second magnet 22 and the transducer 23 are distributed and installed at both ends of the mounting base 25.

[0058] In this embodiment, the mounting base 25 serves as an intermediate connector or carrier, capable of fixing and supporting the second magnet 22 and the transducer 23. The mounting base 25 can be a one-piece molded structure, such as a block, frame, or plate, and can be made of a material with good mechanical strength to ensure structural stability.

[0059] The mounting base 25 can reciprocate linearly along the guide optical axis 24, while the guide optical axis 24 effectively constrains the lateral and rotational movements of the mounting base 25. This can be achieved by providing sliding holes, sliding grooves, or integrated sliding bearing structures on the mounting base 25 that are adapted to the shape of the guide optical axis 24. For example, the mounting base 25 has a through hole that precisely matches the guide optical axis 24. The inner wall of the through hole can be embedded with a self-lubricating bushing or a miniature linear bearing to significantly reduce sliding friction resistance and improve the smoothness and accuracy of the movement. The sliding connection between the mounting base 25 and the guide optical axis 24 ensures that the mounting base 25 and the second magnet 22 and transducer 23 it carries reciprocate precisely along a preset linear path, greatly reducing the occurrence of deviation, lateral swaying, or tilting during the movement, and ensuring the linearity and stability of the movement.

[0060] The second magnet 22 can be fixed to one end of the mounting base 25 by means of adhesive, screw fastening, or clipping, and the transducer 23 can be fixed to the other end of the mounting base 25 in a similar way. Fixing the second magnet 22 and the transducer 23 to both ends of the mounting base 25 can ensure a high degree of synchronization and coordination during reciprocating motion, and can also minimize mutual interference between the two. At the same time, it is also beneficial to improve the compactness of the structure within the limited space of the sealed chamber 211.

[0061] In an optional embodiment, the driven structure 20 further includes a bottom cover 26 and a sound guide diaphragm 27, the bottom cover 26 being sealed to the end of the second base 21 away from the first base 11; the sound guide diaphragm 27 being sealed to the end of the bottom cover 26 away from the second base 21, so that the bottom cover 26 and the second base 21 form a sealed chamber 211.

[0062] In this embodiment, the bottom cover 26 is a structural component used to close one end of the second base 21 to form the chamber 211. It is sealed to the end of the second base 21 away from the first base 11, aiming to provide a robust and leak-proof boundary. In practical applications, this sealing connection can be achieved in various ways. For example, a sealing ring 29 (such as an O-ring or gasket) can be provided on the mating surface of the bottom cover 26 and the second base 21, and a reliable seal can be achieved using mechanical connection methods such as threaded fastening, snap-fit ​​connection, or welding. Alternatively, an adhesive (such as medical-grade epoxy resin or silicone sealant) can be used to bond the bottom cover 26 to the second base 21, forming an integrated sealing structure. All of the above connection methods can effectively prevent external liquids from entering the chamber 211, ensuring the sealing integrity of the chamber 211.

[0063] The acoustic guide diaphragm 27 is a thin film material with good acoustic permeability. Its function is to allow ultrasonic waves to penetrate efficiently while maintaining the airtightness of the chamber 211. The acoustic guide diaphragm 27 is sealed to the end of the base 26 away from the second base 21, thereby completing the overall sealing of the chamber 211. The acoustic guide diaphragm 27 can be implemented in two ways: one is to use a medical-grade adhesive (such as a biocompatible polyurethane adhesive or silicone) to firmly bond its edges to the corresponding position on the base 26, forming a continuous sealing interface. Another way is to fix the acoustic guide diaphragm 27 to the base 26 by mechanical clamping, for example, by pressing its edges into the sealing groove of the base 26 with a pressure ring, and placing a sealing gasket between the pressure ring and the base 26 to ensure a sealing effect.

[0064] The material of the acoustic diaphragm 27 is usually a polymer material with an acoustic impedance close to that of water, low acoustic attenuation, and good biocompatibility, such as polyurethane film, polyethylene film, or silicone rubber film. It can serve as a medium between the coupling agent and the eyeball, ensuring efficient and low-attenuation transmission of ultrasound, so as to minimize ultrasound energy loss and ensure imaging quality.

[0065] In an optional embodiment, the driven structure 20 further includes mounting shafts 281 and mounting brackets 282. Multiple mounting shafts 281 are mounted on the mounting brackets 282. The mounting shafts 281 and / or the mounting brackets 282 are connected to the second base 21, and the mounting shafts 281 and / or the mounting brackets 282 are provided with multiple mounting holes, which facilitate the installation of other functional modules. Examples include line-of-sight guidance.

[0066] During the actual scanning process, when the drive unit 12 in the active structure 10 is activated, the external first magnet 14 is driven to perform precise reciprocating scanning motion through the transmission structure 13 composed of the cam unit 131, the slider, the roller unit 135, and the guide unit 133. Because there is an opposite magnetic force between the first magnet 14 and the second magnet 22 inside the chamber 211, and they are separated only by the wall of the chamber 211, this magnetic force can transmit the reciprocating motion of the first magnet 14 to the second magnet 22 without contact. Under the action of the magnetic force, the second magnet 22 reciprocates synchronously with the first magnet 14 along the guide optical axis 24. Since the transducer 23 is connected to the second magnet 22 and mounted on the same mounting base 25, the transducer 23 also performs synchronous reciprocating scanning within the chamber 211.

[0067] This application embodiment solves the complexity of transmitting driving power to the transducer 23 within the sealed chamber 211 and ensures the airtightness of the chamber 211. In the prior art, transmitting external driving force to the interior of the sealed chamber 211 typically requires a mechanical shaft penetrating the chamber wall, which not only increases structural complexity but also necessitates additional seals to prevent liquid leakage, thus affecting sealing reliability. This device achieves contactless transmission of driving force across the walls of the sealed chamber 211 via magnetic coupling, avoiding any physical penetration, greatly simplifying the structure, and fundamentally guaranteeing the sealing integrity of the chamber 211. This has significant advantages for UBM (ophthalmic ultrasound biomicroscope) equipment that requires ocular ultrasound examinations in a "water bath" environment, ensuring the hygiene and safety of the examination process while improving the reliability and service life of the equipment.

[0068] It should be understood that the above embodiments are exemplary and not intended to encompass all possible implementations. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this application and do not limit the scope of protection of this patent application.

Claims

1. An ophthalmic ultrasound imaging scanning device, characterized in that, The scanning device (100) includes an active structure (10) and a driven structure (20); wherein the active structure (10) includes: First base (11); A driving element (12) is connected to the end of the first base (11) away from the driven structure (20); The transmission structure (13) is connected to the driving component (12) in a transmission manner; The first magnet (14) is connected to the transmission structure (13), and the first magnet (14) reciprocates under the action of the driving member (12) and the transmission structure (13); The driven mechanism (20) includes: The second base (21) is connected to the first base (11), and the second base (21) has a sealed chamber (211) inside. The second magnet (22) is opposite to the first magnet (14) and spaced apart, and the second magnet (22) and the first magnet (14) are opposite in polarity; The transducer (23) is connected to the second magnet (22), and both are located within the chamber (211); The transducer (23) moves synchronously with the second magnet (22) and the first magnet (14) under the mutual attraction of the second magnet (22) and the first magnet (14).

2. The ophthalmic ultrasound imaging scanning device according to claim 1, characterized in that, The active structure (10) includes a plurality of first magnets (14), and the driven structure (20) includes a plurality of second magnets (22) and a plurality of transducers (23), the number of first magnets (14), second magnets (22) and transducers (23) corresponding to each other.

3. The ophthalmic ultrasound imaging scanning device according to claim 1, characterized in that, The transmission structure (13) includes: A cam (131) is connected to the output shaft (121) of the drive (12). The cam (131) rotates around the axis of the output shaft (121) under the driving action of the drive (12). Sliding assembly (132), a plurality of sliding assemblies (132) are evenly distributed circumferentially around the axis of the output shaft (121), each sliding assembly (132) is connected to a first magnet (14), and the sliding assembly (132) is movably connected to the cam member (131); Guide member (133), the sliding component (132) reciprocates in one direction under the guidance of the guide member (133); The first magnet (14) reciprocates along the guide (133) following the sliding assembly (132) under the rotation of the cam (131).

4. The ophthalmic ultrasound imaging scanning device according to claim 3, characterized in that, The transmission structure (13) also includes: An elastic element (134) is connected between adjacent sliding components (132) so that the sliding components (132) move toward the cam element (131).

5. The ophthalmic ultrasound imaging scanning device according to claim 4, characterized in that, The sliding component (132) includes: The slider (136) is slidably connected to the guide (133), and the first magnet (14) is connected to the slider (136); A rolling element (135) is connected to the slider (136) and located between the cam element (131) and the first magnet (14). The rolling element (135) contacts the side wall of the cam element (131) under the action of the elastic element (134).

6. The ophthalmic ultrasound imaging scanning device according to claim 5, characterized in that, The thickness of the cam (131) is greater than or equal to the thickness of the rolling element (135).

7. The ophthalmic ultrasound imaging scanning device according to claim 3, characterized in that, The number of the first magnet (14) and the second magnet (22) is four. The transmission structure (13) has a cross-shaped symmetrical structure, and the cam (131) is located at the center of the cross-shaped symmetrical structure.

8. The ophthalmic ultrasound imaging scanning device according to claim 1, characterized in that, The driven structure (20) also includes: The guide optical axis (24) extends in the same direction as the movement direction of the first magnet (14), and the second magnet (22) and the transducer (23) can both reciprocate along the guide optical axis (24).

9. The ophthalmic ultrasound imaging scanning device according to claim 8, characterized in that, The driven structure (20) also includes: The mounting base (25) is slidably connected to the guide optical axis (24), and the second magnet (22) and the transducer (23) are respectively installed at both ends of the mounting base (25).

10. The ophthalmic ultrasound imaging scanning device according to claim 1, characterized in that, The driven structure (20) also includes: The bottom cover (26) is sealed to the end of the second base (21) away from the first base (11); The sound guiding diaphragm (27) is sealed to the end of the bottom cover (26) away from the second base (21) so that the sound guiding diaphragm (27), the bottom cover (26) and the second base (21) form a sealed chamber (211).

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