Connection mechanism, ultrasonic device, driving device and ultrasonic system

Abstract

This application provides a connection mechanism, an ultrasonic device, a driving device, and an ultrasonic system. The connection mechanism includes a first connection component and a second connection component. The first connection component includes a first electrical connector and a first connecting seat rotatably connected to the first electrical connector. The second connection component includes a second electrical connector and a second connecting seat rotatably connected to the second electrical connector. The first and second electrical connectors are detachably connected. One of the first and second connecting seats is provided with a helical track extending along a helical path, and the other is provided with a sliding structure slidably connected to the helical track. The sliding structure can slide from the beginning end to the end end of the helical track during the relative movement of the first and second connecting seats. The helical self-locking characteristic of this connection mechanism improves connection reliability and avoids increased size.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and in particular relates to a connecting mechanism, an ultrasonic device, a driving device, and an ultrasonic system. Background Technology

[0002] In intravascular ultrasound (IVUS), optical coherence tomography (OCT), and in vivo detection in the abdominal cavity and trachea, ultrasound catheters (or optical detection catheters) are the core equipment for achieving precise imaging. Taking ultrasound catheters as an example, because the ultrasound head inserted into the body needs to be as small as possible to reduce trauma to the human body, while ensuring a sufficiently large and clear scanning range, the mainstream ultrasound catheters are currently divided into two main categories: one is a mechanically rotating ultrasound head, which achieves circumferential scanning imaging through the high-speed rotation of the ultrasound head; the other is a phased array ultrasound head, which acquires circumferential images through the coordinated work of multiple ultrasound transducers arranged in a 360° ring.

[0003] However, in both of the above methods, the effective field of view of the ultrasound head is fixed and narrow. To cover the entire length of the lesion area, multiple circumferential scan images need to be stitched together into a continuous long-segment detection image through the reciprocating motion of the ultrasound head along the axial direction, thereby achieving effective assessment of the entire length of the lesion. Therefore, the ultrasound head in an ultrasound catheter usually needs to have two degrees of freedom of motion: rotational motion around its own axis for circumferential scanning, and reciprocating linear motion along the axial direction of the catheter body for length scanning.

[0004] To drive the ultrasound head to achieve the above-mentioned movement, the catheter connector at the end of the ultrasound catheter needs to be detachably connected to the drive connector of the drive device, so that the rotating bracket at the end of the ultrasound catheter is connected to the rotating shaft of the drive device. The drive device outputs rotational and linear power to the rotating shaft, so that the rotating shaft drives the ultrasound head to rotate and move axially within the human body.

[0005] In current related technologies, ultrasonic catheters and driving devices are generally connected in two ways: one is by inserting the first connector of the ultrasonic catheter into the interface of the second connector of the driving device through an interference fit. However, this interference fit method has poor reliability and is prone to loosening due to factors such as vibration and external force. Moreover, with the increase of insertion and removal times, the interference fit surface will wear down, leading to a decrease in fit strength and further increasing the risk of loosening. The other method is to design additional fasteners, locking parts, and other connecting components on the first and second connectors. However, such connecting components often increase the size of the connecting mechanism, which contradicts the design goal of "miniaturization of the part that enters the body". At the same time, the complex structure may also increase the assembly difficulty and manufacturing cost. Summary of the Invention

[0006] The purpose of this application is to provide a connection mechanism, an ultrasonic device, a driving device, and an ultrasonic system, aiming to solve the technical problem that the connection mechanism between two electrical connection devices in the current related technology cannot simultaneously ensure connection reliability and miniaturization.

[0007] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0008] In a first aspect, a connection mechanism is provided for use in an ultrasound system, the ultrasound system including an ultrasound catheter and a rotary drive component, the connection mechanism including a first connection component and a second connection component, the first connection component including a first connection seat and a first electrical connector, the first electrical connector being used to connect the ultrasound catheter, the first connection seat being rotatably connected to the first electrical connector, the second connection component including a second connection seat and a second electrical connector, the second electrical connector being used to connect the rotary drive component, the second connection seat being rotatably connected to the second electrical connector;

[0009] The first electrical connector and the second electrical connector are detachably connected such that the rotation axes of the first connector and the second connector coincide. One of the first connector and the second connector is provided with a helical track extending along a helical path around the rotation axis of the first connector, and the other connector is provided with a sliding structure slidably connected to the helical track. The sliding structure can slide from the beginning end of the helical track toward the end end of the helical track during the movement of the first connector and the second connector toward each other.

[0010] As one possible implementation of the first aspect, the spiral track is a grooved track, and the sliding structure is a protrusion that matches the grooved track.

[0011] As one possible implementation of the first aspect, the first connector has a first connection hole, the first electrical connector is rotatably disposed in the first connection hole, the second connector has a second connection hole, the second electrical connector is rotatably disposed in the second connection hole, and the second connector can be sleeved on the outside of the first connector.

[0012] As one possible implementation of the first aspect, the spiral track is disposed on the wall of the second connecting hole, and the sliding structure is disposed on the outer peripheral sidewall of the first connecting seat.

[0013] As one possible implementation of the first aspect, the spiral track is disposed on the outer peripheral sidewall of the first connecting seat, and the sliding structure is disposed on the wall of the hole that drives the second connecting hole.

[0014] As one possible implementation of the first aspect, multiple spiral tracks are provided, and the multiple spiral tracks are arranged sequentially around a preset axis. When the first electrical connector and the second electrical connector are docked, the preset axis coincides with the rotation axis of the first connector and the rotation axis of the second connector. The number of sliding structures is the same as the number of spiral tracks.

[0015] In one possible implementation of the first aspect, the first electrical connector includes a rotating bracket and an electrical connection male socket, the rotating bracket being fixedly connected to the electrical connection male socket; the second electrical connector includes a rotating shaft and an electrical connection female socket, the rotating shaft being fixedly connected to the electrical connection female socket; the rotating shaft is capable of docking with the rotating bracket and restricting the rotation direction of the rotating bracket; the electrical connection male socket is capable of electrical connection with the electrical connection female socket after the rotating shaft docks with the rotating bracket.

[0016] As one possible implementation of the first aspect, the first electrical connector further includes a sealing ring that is fitted over the rotating bracket and pressurized against the first connector.

[0017] As one possible implementation of the first aspect, one of the rotating bracket and the rotating shaft is provided with a guide structure, and the other is provided with an abutment structure. The guide structure includes a first helical abutment surface and a first stop surface. The first helical abutment surface extends along a helical path around a preset axis, and the direction of rotation of the first helical abutment surface is the same as the direction of rotation of the helical track. The first stop surface is connected to the end of the first helical abutment surface and extends along the extension direction of the preset axis. The abutment structure can abut against the first helical abutment surface during the movement of the first connecting seat and the second connecting seat towards each other, and slide along the first helical abutment surface toward the first stop surface. When the first electrical connector and the second electrical connector are mated, the preset axis coincides with the rotation axis of the first connecting seat and the rotation axis of the second connecting seat.

[0018] As one possible implementation of the first aspect, when the sliding structure is located at the end of the spiral track, the abutting structure abuts against the first stop surface.

[0019] As one possible implementation of the first aspect, the rotating shaft is provided with the guide structure, and the rotating bracket is provided with the abutment structure.

[0020] As one possible implementation of the first aspect, the abutment structure includes a rotary drive pin that extends along the extension direction of the preset axis. The rotary drive pin is able to abut against the first spiral abutment surface during the process of the first connecting seat and the second connecting seat moving towards each other, and slide along the first spiral abutment surface toward the first stop surface.

[0021] As one possible implementation of the first aspect, the abutting structure includes a second spiral abutting surface and a second stop surface. The second spiral abutting surface extends along a spiral path around the preset axis. The spiral direction of the second spiral abutting surface is the same as that of the first spiral abutting surface, and the spiral angle of the second spiral abutting surface is the same as that of the first spiral abutting surface. The second stop surface is connected to the end of the second spiral abutting surface and extends along the extension direction of the preset axis. During the process of the first connecting seat and the second connecting seat moving towards each other, the second spiral abutting surface adheres to the first spiral abutting surface and slides along the first spiral abutting surface toward the first stop surface.

[0022] As one possible implementation of the first aspect, the guide structure is provided in multiple ways, and the multiple guide structures are arranged sequentially around the preset axis, and the number of abutment structures is the same as the number of guide structures.

[0023] In a second aspect, an ultrasonic device is provided, comprising an ultrasonic conduit and a first connecting assembly as described in the above embodiments, wherein the ultrasonic conduit includes a conduit body and an acoustic probe, and the two ends of the conduit body are respectively connected to the acoustic probe and the first electrical connector.

[0024] Thirdly, a driving device is provided, including a rotary drive member and a second connecting assembly as described in the above embodiments, wherein the drive shaft of the rotary drive member is connected to the second electrical connector, and the rotary drive member is capable of driving the second electrical connector to rotate about the rotation axis of the second connecting seat.

[0025] Fourthly, an ultrasonic system is provided, including the ultrasonic device and the driving device provided above.

[0026] The technical advantages of this embodiment compared to the prior art are as follows: In use, the first connecting component and the second connecting component are first aligned along a preset axis, and the sliding structure is aligned with the starting end of the spiral track in the extension direction of the preset axis. Then, the two components are pushed to move towards each other along the preset axis until the sliding structure enters the starting end of the spiral track. Next, the first connecting seat is rotated forward and / or the second connecting seat is rotated in the reverse direction to drive the sliding structure to slide from the starting end to the ending end along the spiral path of the spiral track. At this time, the first electrical connector and the second electrical connector complete docking and electrical connection, and the sliding structure is limited by the ending end, completing the connection and fixation of the first connecting component and the second connecting component. When it is necessary to disconnect the first connecting component and the second connecting component, the first connecting seat is rotated in the reverse direction and / or the second connecting seat is rotated forward to allow the sliding structure to retract from the ending end to the starting end along the spiral track. During this process, the first electrical connector and the second electrical connector can be separated. The first connecting seat and the second connecting seat continue to move in opposite directions to allow the sliding structure to disengage from the spiral track, achieving separation.

[0027] This connecting mechanism achieves connection through the cooperation of a helical track and a sliding structure. Compared to an interference fit, the self-locking characteristic of the helical track significantly improves the connection reliability between the first and second connecting seats, effectively preventing loosening caused by vibration or external forces. Furthermore, wear has a smaller impact on the fit strength, extending service life. Compared to solutions requiring additional snaps or locking components, this connecting mechanism eliminates the need for complex additional structures, avoiding increased size and aligning with the miniaturization design goal of the internal insertion part. It also simplifies the assembly process and reduces manufacturing costs. In addition, the coordinated action of rotation and axial movement completes connection and separation, making operation convenient and enabling precise docking of the first and second electrical connectors, ensuring stable signal transmission. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a partial structural diagram of the ultrasonic device provided in the embodiments of this application;

[0030] Figure 2 This is a partial cross-sectional view of the driving device and the ultrasonic device in cooperation state provided in the embodiments of this application;

[0031] Figure 3 This is a three-dimensional structural diagram of the connecting mechanism provided in the embodiments of this application;

[0032] Figure 4 yes Figure 3 Exploded view of the connecting mechanism in the diagram;

[0033] Figure 5 yes Figure 3 A cross-sectional view of the connecting mechanism in the middle;

[0034] Figure 6 This is a perspective view of the connection mechanism provided in another embodiment of this application before the first connecting seat and the second connecting seat are docked;

[0035] Figure 7 This is a perspective view of the connection mechanism provided in another embodiment of this application before the first connecting seat and the second connecting seat are docked;

[0036] Figure 8 This is a three-dimensional structural diagram of the second electrical connector in the connection mechanism provided in the embodiments of this application;

[0037] Figure 9 This is a three-dimensional structural diagram of the connection mechanism provided in another embodiment of this application before the first electrical connector and the second electrical connector are mated.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Ultrasonic device; 110. Ultrasonic conduit; 200. Drive device; 210. Rotary drive component; 210a. Drive shaft; 220. Drive housing; 300. Connecting assembly; 10. First connecting assembly; 11. First connecting seat; 111. Sliding structure; 1111. Protrusion; 1101. First connecting hole; 12. First electrical connector; 121. Rotating bracket; 1211. Abutment structure; 12111. Rotary drive pin; 12112. Second spiral abutment surface; 1211 3. Second stop surface; 122. Electrical connection male seat; 123. Sealing ring; 20. Second connection assembly; 21. Second connection seat; 2101. Second connection hole; 211. Helical track; 2111. Groove track; 22. Second electrical connector; 221. Rotating shaft core; 221a. Inner shaft core ring; 221b. Outer shaft core ring; 2211. Guide structure; 22111. First helical abutment surface; 22112. First stop surface; 2212. Rotating convex ring; 222. Electrical connection female seat. Detailed Implementation

[0040] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0041] In the description of this application, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can 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 application according to the specific circumstances.

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0045] Please see Figure 1 and Figure 2 This application provides an ultrasonic device 100, a driving device 200, and an ultrasonic system. The ultrasonic system includes the ultrasonic device 100 and the driving device 200, and the driving device 200 is capable of driving the ultrasonic device 100 to rotate and move axially.

[0046] Specifically, the ultrasound device 100 includes an ultrasound catheter 110 and a first connecting component 10. The ultrasound catheter 110 includes a catheter body and an acoustic probe. The catheter body is a slender tubular structure, mostly made of polymer materials, which has good flexibility and biocompatibility, and can be smoothly inserted into human blood vessels or other cavities. The acoustic probe and the first connecting component 10 are respectively connected to both ends of the catheter body. The acoustic probe can convert electrical signals into ultrasound waves and emit them, while simultaneously receiving ultrasound waves reflected back from tissues and converting them into electrical signals for subsequent processing to form an ultrasound image.

[0047] The driving device 200 includes a rotary drive component 210 and a second connecting assembly 20. The rotary drive component has a transmission shaft 210a, which serves as the output end of the rotary drive component 210 and is connected to the second connecting assembly 20. The second connecting assembly 20 can dock with the first connecting assembly 10 to achieve mechanical and electrical connection between the ultrasound catheter 110 and the rotary drive component 210. The rotary drive component 210 can provide rotational power and axial force to the ultrasound catheter 110 through the transmission shaft 210a to drive the ultrasound catheter 110 to rotate and reciprocate axially. The high-speed rotation of the ultrasound head can achieve 360° circumferential imaging, clearly presenting the cross-sectional structure of the target area (such as plaque on the vessel wall, degree of stenosis, etc.). The axial reciprocating linear motion of the ultrasound head can stitch together multiple circumferential images to form a continuous longitudinal cross-sectional image covering the entire length of the lesion, completely restoring the spatial distribution characteristics of the lesion. The rotary drive component 210 can be a rotary motor.

[0048] Optionally, the drive device 200 may further include a drive housing 220, which may house the rotary drive member 210 and at least a portion of the second connecting assembly 20.

[0049] The ultrasound system may also include an external host. Both the ultrasound device 100 and the drive device 200 are electrically connected to the external host. The ultrasound device 100 can transmit the raw ultrasound signal (or optical signal) collected by the ultrasound head to the external host. The drive device 200 synchronously adjusts the motion parameters (such as rotation speed and axial movement rate) through the built-in control module, and works with the external host to complete the real-time processing of signals, image reconstruction and display, providing intuitive visualization evidence for clinical diagnosis.

[0050] When operating the ultrasound system, firstly, dock and lock the first connecting component 10 of the ultrasound device 100 with the second connecting component 20 of the drive device 200. Then, under image guidance, push the ultrasound head to the proximal end of the target area of ​​the human body. Then, set the parameters on the external host, adjust and record the data in real time, and start the rotation drive 210. Drive the ultrasound head to rotate and move axially through the rotation drive 210 so that the ultrasound head can scan the target area. After the scan is completed, control the rotation drive 210 to stop moving, then remove the ultrasound head from the human body and separate the first connecting component 10 and the second connecting component 20 to separate the ultrasound device 100 from the drive device 200.

[0051] In current related technologies, the ultrasonic device 100 and the driving device 200 are generally connected in two ways: one is that the first connecting seat of the ultrasonic device 100 is inserted into the interface of the second connecting seat of the driving device 200 through an interference fit. However, this interference fit method has poor reliability and is prone to loosening due to factors such as vibration and external force. Moreover, with the increase of insertion and removal times, the interference fit surface will wear down, resulting in a decrease in fit strength, which further exacerbates the risk of loosening. The other method is to design additional fasteners, locking parts and other connecting parts on the first connecting seat and the second connecting seat. However, such connecting parts often increase the volume of the connecting mechanism, which contradicts the design goal of "miniaturization of the part that enters the body". At the same time, the complex structure may also increase the assembly difficulty and manufacturing cost.

[0052] To resolve this issue, please refer to [link / reference]. Figure 3 and Figure 4 This application also provides a connection mechanism, which includes a first connection component 10 and a second connection component 20. The first connection component 10 can be a first connection component 10 in the ultrasonic device 100, or a connection end in other devices. The second connection component 20 can be a second connection component 20 in the driving device 200, or a connection end in other devices for mating with the first connection component 10. In the following embodiments, for ease of description, the first connection component 10 is described as the first connection component 10 in the ultrasonic device 100, and the second connection component 20 is described as the second connection component 20 in the driving device 200.

[0053] The first connecting assembly 10 includes a first connecting seat 11 and a first electrical connector 12. The first electrical connector 12 can be connected to the ultrasonic catheter 110, specifically to the end of the catheter body, and is electrically connected to the ultrasound head. The first connecting seat 11 is rotatably connected to the first electrical connector 12, that is, the first connecting seat 11 can rotate relative to the first electrical connector 12, and the first connecting seat 11 restricts the displacement of the first electrical connector 12 in the direction extending along its rotation axis. The first connecting seat 11 can be sleeved on the outside of the first electrical connector 12, inserted into the first electrical connector 12, or only contact a portion of the periphery of the first electrical connector 12; there are no limitations on this.

[0054] The second connecting assembly 20 includes a second connecting seat 21 and a second electrical connector 22. The second connecting seat 21 is rotatably connected to the second electrical connector 22, meaning that the second connecting seat 21 can rotate relative to the second electrical connector 22. The second connecting seat 21 restricts the displacement of the second electrical connector 22 in the direction extending along its rotation axis. The second connecting seat 21 can be sleeved on the outside of the second electrical connector 22, inserted into the second electrical connector 22, or it can only contact a portion of the inner or outer periphery of the second electrical connector 22; there are no restrictions on this. The second electrical connector 22 can be connected to the drive shaft 210a, and the second connecting seat 21 is fixedly connected to the drive housing 220 of the drive device 200.

[0055] The first electrical connector 12 and the second electrical connector 22 can be detachably connected along the extension path of a preset axis. That is, the first electrical connector 12 and the second electrical connector 22 can be detachably connected as they move towards each other along the extension path of the preset axis. After the first electrical connector 12 and the second electrical connector 22 are docked, they can also achieve an electrical connection. Here, the preset axis is a virtual axis, not a structural line. After the first electrical connector 12 and the second electrical connector 22 are connected, this preset axis coincides with the rotation axis of both the first connecting seat 11 and the second connecting seat 21. Optionally, this preset axis can coincide with the central axis of the first electrical connector 12 and the central axis of the second electrical connector 22 to facilitate precise alignment of the first electrical connector 12 and the second electrical connector 22 during docking.

[0056] One of the first connecting seat 11 and the second connecting seat 21 is provided with a spiral track 211 extending along a spiral path around a preset axis, and the other is provided with a sliding structure 111 slidably connected to the spiral track 211. It can be understood that the first connecting seat 11 is provided with the spiral track 211 and the second connecting seat 21 is provided with the sliding structure 111, or vice versa. The spiral track 211 extends spirally around the preset axis, and its two ends are the starting end and the ending end, respectively.

[0057] During the movement of the first connecting seat 11 and the second connecting seat 21 towards each other along the extension direction of the preset axis, the sliding structure 111 can be slidably connected to the spiral track 211. That is, the sliding structure 111 can enter the spiral track 211 from the starting end and slide from the starting end to the end of the spiral track 211. It should be noted that when the sliding structure 111 reaches the end of the spiral track 211, it will be limited by the end of the spiral track 211 or by the mating of the first electrical connector 12 and the second electrical connector 22, so as to stop at the end of the spiral track 211. At this time, the sliding structure 111 can slide in the opposite direction toward the starting end of the spiral track 211, but will not continue to slide away from the starting end from the end of the spiral track 211. The rotation direction of the spiral track 211 can be clockwise or counterclockwise. Since the first connector 11 can rotate relative to the first electrical connector 12 and the second connector 21 can rotate relative to the second electrical connector 22, the rotational connection between the first connector 11 and the second connector 21 does not affect the docking method between the first electrical connector 12 and the second electrical connector 22. The first electrical connector 12 and the second electrical connector 22 can dock without rotation or through relative rotation. There are no restrictions here.

[0058] When using this connecting mechanism, firstly, align the first connecting component 10 and the second connecting component 20 along a preset axis, and align the sliding structure 111 with the starting end of the spiral track 211 in the extension direction of the preset axis; then push the two to move towards each other along the preset axis until the sliding structure 111 enters the starting end of the spiral track 211; then rotate the first connecting seat 11 in the forward direction and / or rotate the second connecting seat 21 in the reverse direction to drive the sliding structure 111 to slide from the starting end to the ending end along the spiral path of the spiral track 211. At this time, the first electrical connector 12 and the second electrical connector 22 complete docking and realize electrical connection, and the sliding structure 111 is limited by the ending end, thus completing the connection and fixation of the first connecting component 10 and the second connecting component 20. When it is necessary to disconnect the first connecting component 10 from the second connecting component 20, the first connecting seat 11 is rotated in the opposite direction and / or the second connecting seat 21 is rotated in the forward direction, so that the sliding structure 111 retracts from the end to the starting end along the spiral track 211. During this process, the first electrical connector 12 and the second electrical connector 22 can be separated. The first connecting seat 11 and the second connecting seat 21 continue to move in opposite directions, so that the sliding structure 111 can disengage from the spiral track 211 and achieve separation of the two.

[0059] This connecting mechanism achieves connection through the cooperation of the helical track 211 and the sliding structure 111. Compared with the interference fit solution, the self-locking characteristic of the helical mechanism significantly improves the connection reliability between the first connecting seat 11 and the second connecting seat 21, effectively preventing loosening caused by vibration or external force, and the impact of wear on the fit strength is smaller, thus extending the service life. Compared with the solution of additional buckles and locking parts, this connecting mechanism does not require the addition of complex additional structures, avoiding the increase in the size of the connecting mechanism, which meets the design goal of miniaturization of the internal insertion part, while simplifying the assembly process and reducing manufacturing costs. In addition, the connection and separation are completed by the coordinated action of rotation and axial movement, which is convenient to operate and can achieve precise docking of the first electrical connector 12 and the second electrical connector 22, ensuring the stability of signal transmission.

[0060] Please see Figure 5 In some embodiments, the first connector 11 has a first connector hole 1101, and the first electrical connector 12 is rotatably disposed within the first connector hole 1101, thereby providing circumferential protection for the first electrical connector 12. The second connector 21 has a second connector hole 2101, and the second electrical connector 22 is rotatably disposed within the second connector hole 2101, thereby providing circumferential protection for the second electrical connector 22.

[0061] Please see Figure 3 and Figure 4In some embodiments, the second connecting seat 21 can be fitted over the first connecting seat 11, and the outer peripheral side of the first connecting seat 11 can fit against the wall of the second connecting hole 2101 to improve the stability of the first connecting seat 11 nested within the second connecting seat 21. It should be noted that during the insertion of the first connecting seat 11 into the second connecting hole 2101, the sliding structure 111 can slide along the helical track 211. Both the first connecting seat 11 and the second connecting seat 21 are cylindrical to achieve rotational engagement between them. This nested design makes the connecting mechanism more compact in the normal direction of the preset axis, improving the structural reliability of the connecting mechanism, and reducing the size of the connecting mechanism in the extension direction of the preset axis, further enhancing its miniaturization advantage to better adapt to the space constraints of internally inserted components. The first connecting hole 1101 guides the rotation of the first electrical connector 12, and the second connecting hole 2101 guides the second electrical connector 22. The nested fit between the first connecting seat 11 and the second connecting seat 21 ensures the coaxiality of the first electrical connector 12 and the second electrical connector 22 during relative rotation, improving the docking accuracy and stability of their electrical connection. Simultaneously, since the sliding structure 111 is located between the first connecting seat 11 and the second connecting seat 21, the second connecting seat 21 provides protection for the fit between the sliding structure 111 and the spiral track 211, reducing wear from external impurities on the spiral track 211 and the sliding arch structure, extending service life. Furthermore, the sliding structure 111 slides more smoothly along the spiral track 211 during the nesting process, reducing operating resistance and balancing connection reliability and ease of use.

[0062] Please see Figure 3 and Figure 4 In some embodiments, the spiral track 211 is a groove track 2111, and the sliding structure 111 is a protrusion 1111 that matches the groove track 2111. The precise fit between the groove and the protrusion 1111 can form a stable guide and limit, achieving self-locking of the connection through the spiral fit, greatly improving the anti-loosening ability and solving the problem of insufficient reliability of interference fit. It also eliminates the need for additional buckles and other complex structures, avoiding an increase in the size of the connection mechanism and meeting the miniaturization requirements. At the same time, the protrusion 1111 has a uniform contact area when sliding along the groove track 2111, resulting in less wear and lower assembly difficulty, which can reduce manufacturing costs. It can also ensure the precise docking of the first electrical connector 12 and the second electrical connector 22 through the guide of the groove track 2111, ensuring stable signal transmission, and taking into account connection reliability, structural compactness and ease of operation.

[0063] Optionally, the groove 2111 is a groove 2111 with a closed bottom, so as to avoid the groove bottom being open, which would cause the groove 2111 to be easily deformed and reduce the stability of the connection between the first connecting seat 11 and the second connecting seat 21.

[0064] In other embodiments, the bottom of the groove of the rail 2111 can also be through-hole, forming a hole-like structure, which is not limited here.

[0065] Optionally, the protrusion 1111 can be configured to have an interference fit with the bottom of the groove of the rail 2111 to achieve radial preload during the relative rotation of the first connecting seat 11 and the second connecting seat 21, reduce the fit clearance between the groove wall of the rail 2111 and the protrusion 1111, and improve the anti-shaking ability of the first connecting seat 11 and the second connecting seat 21 after connection.

[0066] In other embodiments, the spiral track 211 may be a convex strip structure, and the sliding structure 111 may be a U-shaped structure that matches the convex strip structure. The U-shaped structure may be fitted over the convex strip structure and slide along the convex strip structure.

[0067] Optionally, multiple spiral tracks 211 are provided, arranged sequentially around a preset axis. The number of sliding structures 111 is the same as the number of spiral tracks 211, and each sliding structure 111 corresponds one-to-one with each spiral track 211. That is, each sliding structure 111 can cooperate with an independent spiral track 211. In this way, the cooperation of multiple sets of sliding structures 111 and spiral tracks 211 can mutually restrict each other, reduce the impact of the processing error of a single spiral track 211 or sliding structure 111 on the overall connection effect, improve the assembly fault tolerance, avoid wear or deformation caused by local stress concentration in a single mating structure, extend service life, and further limit the radial offset of the first connecting seat 11 and the second connecting seat 21, enhancing the overall rigidity of their connection. Among them, the multiple spiral tracks 211 can be evenly distributed circumferentially around the preset axis to enhance the coaxiality of the first connecting seat 11 and the second connecting seat 21, reduce relative wobbling, ensure the stability of rotational and axial motion, and indirectly improve the reliability of the electrical connection. The combination of multiple spiral tracks 211 and the same number of sliding structures 111 can also evenly distribute the force on the connection part to multiple points in the circumference. During the relative rotation of the first connecting seat 11 and the second connecting seat 21, the force is applied synchronously through multiple contact points, which strengthens the pressing effect of the sliding structure 111 on the end of the spiral track 211 and further reduces the risk of loosening.

[0068] Please see Figure 3 and Figure 4In one implementation, a spiral track 211 is disposed on the wall of the second connecting hole 2101, and a sliding structure 111 is disposed on the outer peripheral sidewall of the first connecting seat 11. Taking the spiral track 211 as a groove track 2111 as an example, the starting end of the groove track 2111 extends to the end face of the second connecting seat 21 away from the rotating drive member 210, and an opening is formed on this end face so that the protrusion 1111 can enter the groove track 2111 through the opening. By disposing of the spiral track 211 on the wall of the second connecting hole 2101, the spiral track 211 can be concealed within the second connecting hole 2101, and the second connecting seat 21 can protect the spiral track 211 from external impacts or contaminant corrosion, significantly reducing the risk of wear. Meanwhile, the sliding structure 111 on the first connecting seat 11 protrudes from its outer peripheral sidewall. Therefore, the sliding structure 111 does not need to occupy additional radial space in the first connecting hole 1101. The first connecting seat 11 and the first electrical connector 12 can fit tightly together, thereby compressing the radial dimension of the first connecting assembly 10 and enhancing the miniaturization advantage.

[0069] exist Figure 3 In the embodiment shown, there are two slots 2111 and two protrusions 1111. The two protrusions 1111 are located at both ends of the first connecting seat 11 in the radial direction. The two slots 2111 are arranged in a centrally symmetrical manner with a preset axis as the center. At this time, the starting ends of the two slots 2111 are located at both ends of the second connecting seat 21 in the radial direction.

[0070] exist Figure 6 In the embodiment shown, there are two or three slots 2111 and three protrusions 1111. The three protrusions 1111 are equally spaced around a preset axis, and the central angle between two adjacent protrusions 1111 is 120°. The starting ends of the two slots 2111 are also equally spaced around the preset axis.

[0071] Please see Figure 7 As another implementation, the helical track 211 is disposed on the outer peripheral sidewall of the first connecting seat 11, and the sliding structure 111 is disposed on the wall of the hole that drives the second connecting hole 2101. Taking the helical track 211 as a groove track 2111 as an example, compared with the previous implementation, it is easier to process the helical track 211 on the outer peripheral sidewall of the first connecting seat 11. It can be directly formed by precision turning or molding, reducing manufacturing costs. At the same time, the groove track 2111 can be exposed on the first connecting seat 11, which is convenient for observing and maintaining the wear parts of the groove track 2111. Furthermore, the wear resistance of the groove track 2111 can be enhanced by optimizing the surface treatment, further extending the service life of the first connecting seat 11, thus taking into account the ease of processing, connection stability, and maintenance convenience.

[0072] Please see Figure 4 and Figure 5In some embodiments, the first electrical connector 12 includes a rotating bracket 121 and an electrical connector male 122, with the rotating bracket 121 and the electrical connector male 122 fixedly connected. The rotating bracket 121 can be connected to the end of the conduit body, and the electrical connector male 122 can be electrically connected to the acoustic head. The second electrical connector 22 includes a rotating shaft core 221 and an electrical connector female 222, with the rotating shaft core 221 and the electrical connector female 222 fixedly connected. The rotating shaft core 221 can be connected to the end of the drive shaft 210a, and the electrical connector female 222 can be electrically connected to the rotation drive member 210. After the rotating bracket 121 and the rotating shaft core 221 are mated, the electrical connector male 122 and the electrical connector female 222 are electrically connected. Wherein, after the rotating shaft core 221 and the rotating bracket 121 are mated, the rotating shaft core 221 can restrict the rotation direction of the rotating bracket 121. Understandably, the rotating bracket 121 can reach an angle-restricted position relative to the rotating shaft 221. At this point, the rotating bracket 121 and the rotating shaft 221 are docked, and the rotating shaft 221 can restrict the rotation of the rotating bracket 121 in at least one direction. In this embodiment, the rotating shaft 221 can restrict the counterclockwise movement of the rotating bracket 121. Thus, when the rotating drive 210 drives the rotating shaft 221 to rotate clockwise, the rotating shaft 221 can drive the rotating bracket 121 to rotate clockwise synchronously. The docking of the rotating shaft 221 and the rotating bracket 121 enables efficient transmission of rotational force when the rotating drive 210 is driven, ensuring that the rotating shaft 221 can rotate synchronously with the sound head by driving the rotating bracket 121, avoiding transmission slippage.

[0073] When the rotating bracket 121 reaches the position where the rotation angle is limited, the electrical connection male 122 and the electrical connection female 222 can be correctly aligned. In this way, the alignment of the rotating shaft core 221 and the rotating bracket 121 can accurately position the angle of the electrical connection male 122 and the electrical connection female 222, ensuring that the two are electrically connected in the correct posture, reducing signal transmission loss, balancing the stability of power transmission and the accuracy of electrical connection, and improving the overall system reliability.

[0074] Optionally, the male electrical connector 122 and the female electrical connector 222 can engage when moving towards each other to achieve a stable electrical connection, while providing a certain connection force to prevent the sliding structure 111 from sliding in the opposite direction along the spiral track 211. Both the male electrical connector 122 and the female electrical connector 222 can be radio frequency connectors.

[0075] Please see Figure 4 and Figure 5In some embodiments, the first electrical connector 12 further includes a sealing ring 123, which is interference-fitted between the rotating bracket 121 and the first connecting seat 11. The elastic deformation of the sealing ring 123 can compensate for the assembly gap between the rotating bracket 121 and the first connecting seat 11, reduce radial wobble during relative rotation, enhance the stability of the overall structure, and indirectly ensure the power transmission efficiency and the continuity of the electrical connection. Without increasing the complexity of the structure, it balances sealing protection and motion stability. The sealing ring 123 may be made of rubber.

[0076] Optionally, the sealing ring 123 is fitted over the rotating bracket 121 and press-fits against the wall of the first connecting hole 1101. This eliminates the gap between the rotating bracket 121 and the first connecting seat 11. Thus, the sealing ring 123 forms a reliable sealing barrier between the two rotating brackets 121 and the wall of the first connecting hole 1101, effectively preventing external liquids, dust, and other impurities from entering the conduit body, avoiding contamination or corrosion of the conduit body and the sound head, and improving the durability and safety of the first connecting assembly 10. Furthermore, the sealing ring 123 also restricts the axial movement of the rotating bracket 121 relative to the first connecting seat 11.

[0077] Optionally, a rotating protruding ring is provided on the circumference of the rotating shaft core 221, and an annular groove is provided on the hole wall of the second connecting hole 2101. The annular groove is slidably connected to the rotating protruding ring to restrict the axial movement of the second connecting seat 21 relative to the rotating shaft core 221.

[0078] Please see Figure 5 and Figure 8 In some embodiments, one of the rotating bracket 121 and the rotating shaft 221 is provided with a guide structure 2211, and the other is provided with an abutment structure 1211. That is, the rotating bracket 121 is provided with a guide structure 2211 and the rotating shaft 221 is provided with an abutment structure 1211, or the rotating bracket 121 is provided with an abutment structure 1211 and the rotating shaft 221 is provided with a guide structure 2211.

[0079] The guide structure 2211 includes a first helical abutment surface 22111 and a first stop surface 22112. The first helical abutment surface 22111 extends along a helical path around a preset axis and faces or approximately faces the rotating support 121. The two extended ends of the first helical abutment surface 22111 are the starting end and the ending end, respectively. The first stop surface 22112 is connected to the ending end of the first helical abutment surface 22111 and extends along the extension direction of the preset axis. The first stop surface 22112 and the first helical abutment surface 22111 can form a V-shaped groove structure.

[0080] During the movement of the first connecting seat 11 and the second connecting seat 21 toward each other, the abutting structure 1211 can abut against the first spiral abutting surface 22111 and slide along the first spiral abutting surface 22111 toward the first stop surface 22112. When the first connecting seat 11 and the second connecting seat 21 move toward each other, the first spiral abutting surface 22111 can guide the abutting structure 1211 to slide smoothly, avoiding jamming during docking. Simultaneously, the spiral path of the first spiral abutting surface 22111 can naturally convert the axial movement of the abutting structure 1211 into an adjustment of the rotation angle, ensuring precise alignment between the rotating shaft core 221 and the rotating bracket 121. The mechanical cooperation between the abutting structure 1211 and the guiding structure 2211 requires no additional power drive; angle positioning and anti-loosening can be achieved solely through the inherent characteristics of the structure itself, simplifying system design and reducing the risk of failure. More importantly, regardless of the initial angle of the rotating support 121 and the rotating shaft core 221, the abutment structure 1211 can slide along the first spiral abutment surface 22111 toward the first stop surface 22112, so that the two can be docked without precise alignment of the angle, realizing the semi-blind insertion function, greatly improving the convenience of operation, and is especially suitable for clinical and other scenarios with high requirements for operation efficiency.

[0081] In this configuration, the first helical contact surface 22111 rotates in the same direction as the helical track 211. Thus, when the rotating bracket 121 rotates under the drive of the rotating shaft 221, the rotating bracket 121 can apply a rotational force in the same direction to the first connecting seat 11 through the friction between the sealing ring 123 and the first connecting seat 11. Since the helical track 211 rotates in the same direction as the first helical contact surface 22111, the first connecting seat 11 can have a tendency to rotate in the same direction as the rotating bracket 121. This causes the sliding structure 111 to continuously apply force to the end of the helical track 211, thereby ensuring that the sliding structure 111 is tightly pressed against the end of the helical track 211, preventing the first connecting seat 11 from becoming loose from the second connecting seat 21, and improving the reliability of the connection between the two.

[0082] Optionally, when the abutment structure 1211 reaches the first stop surface 22112, the rotating shaft core 221 reaches the angle-limited position, and the electrical connection male seat 122 and the electrical connection female seat 222 achieve electrical connection, ensuring the accuracy of the electrical connection. In other embodiments, the rotating shaft core 221 may reach the angle-limited position before the abutment structure 1211 reaches the first stop surface 22112, and the electrical connection male seat 122 and the electrical connection female seat 222 may engage. At this time, since the sliding structure 111 has reached the end of the spiral track 211, the movement of the abutment structure 1211 towards the first stop surface 22112 can be restricted.

[0083] Optionally, when the sliding structure 111 is at the end of the spiral track 211, the abutting structure 1211 abuts against the first stop surface 22112. In this way, while the sliding structure 111 locks the connection between the first connecting seat 11 and the second connecting seat 21 at the end of the spiral track 211, the abutting structure 1211 and the first stop surface 22112 form a double limiting mechanism. This ensures axial and circumferential connection stability through the spiral track 211, and precisely limits the mating angle between the male and female electrical connectors 122 and 222 using the first stop surface 22112. This maintains the preset mating posture of the male and female electrical connectors, preventing interruption of electrical signal transmission due to loose connection. Furthermore, the synchronous positioning design of these two connection parts provides intuitive feedback on the connection status through mechanical cooperation, facilitating operator confirmation of successful docking and reducing misoperation. Furthermore, the dual limiting structure can distribute the force on the two connecting parts, reduce the wear rate of a single structure, extend the service life of the connecting mechanism, and achieve condition monitoring without additional detection elements, simplifying the overall structural design. In other embodiments, the first stop surface 22112 can also be set at an angle to the extension direction of the preset axis, as long as it can limit the relative rotation of the abutment structure 1211.

[0084] exist Figure 5 and Figure 8 In the illustrated embodiment, the rotating shaft core 221 is provided with a guide structure 2211, and the rotating bracket 121 is provided with an abutment structure 1211. The rotating shaft core 221 includes an inner shaft core ring and an outer shaft core ring, with the outer shaft core ring sleeved around the inner shaft core ring. The inner shaft core ring forms a second connecting hole 2101. The outer ring surface of the inner shaft core ring and the inner ring surface of the outer shaft core ring are spaced apart. The guide structure 2211 is disposed in the gap between the inner and outer shaft core rings, meaning that the first helical abutment surface 22111 extends helically within this gap, and the first stop surface 22112 is also located within this gap. The abutment structure 1211 can extend into this gap to abut against the first helical abutment surface 22111. In this way, the outer ring surface of the inner shaft core ring and the inner ring surface of the outer shaft core ring can radially limit the abutment structure 1211, avoiding movement error of the abutment structure 1211, thereby improving the electrical connection accuracy and stability between the electrical connection male socket 122 and the electrical connection female socket 222.

[0085] Please see Figure 4In one implementation, the abutment structure 1211 includes a rotary drive pin 12111, which extends along a preset axis. The rotary drive pin 12111 is rod-shaped. During the relative movement of the first connecting seat 11 and the second connecting seat 21, the rotary drive pin 12111 abuts against the first helical abutment surface 22111 and slides along the first helical abutment surface 22111 toward the first stop surface 22112. The rod-shaped rotary drive pin 12111 has a small contact area and a clearly defined contact point with the first helical abutment surface 22111, resulting in low frictional resistance during sliding. This further reduces the jamming between the rotating bracket 121 and the rotating shaft core 221, ensuring smooth movement of the abutment structure 1211 along the helical path. When the rotary drive pin 12111 reaches the first stop surface 22112, it can completely engage with the first stop surface 22112, improving the stability of the limiting position. Meanwhile, the rod-shaped rotary drive pin 12111 has a simple structure and is easy to process, which can reduce manufacturing costs.

[0086] Optionally, multiple guide structures 2211 are provided, arranged sequentially around a preset axis. The number of abutment structures 1211 is the same as that of guide structures 2211, and each abutment structure 1211 corresponds one-to-one with each guide structure 2211. That is, all abutment structures 1211 can abut against the first spiral abutment surface 22111 of different guide structures 2211 respectively. The cooperation of multiple sets of guide structures 2211 and abutment structures 1211 can further disperse the force during docking, reduce the wear of individual guide structures 2211, extend service life, and enhance the circumferential stability of the rotating shaft core 221 after docking with the rotating bracket 121. It also prevents the rotating shaft core 221 from deflecting due to the force applied by a single abutment structure 1211, ensuring the continuous stability of the electrical connection and improving the reliability and applicability of the overall connection mechanism.

[0087] Optionally, all guide structures 2211 are connected end to end around a preset axis. That is, the starting end of the first spiral abutment surface 22111 in one guide structure 2211 can be connected to the starting end of the first stop surface 22112 in another guide structure 2211. In this way, the first spiral abutment surfaces 22111 in multiple guide structures 2211 can form a continuous guide path around the preset axis. Regardless of the initial docking angle between the rotating bracket 121 and the rotating shaft core 221, the abutment structure 1211 can accurately fall on a certain first spiral abutment surface 22111 and slide along the first spiral abutment surface 22111 to the first stop surface 22112, completely eliminating the angle alignment blind zone, realizing more reliable semi-blind insertion, and greatly reducing the difficulty of operation.

[0088] Please see Figure 9As another implementation, the abutment structure 1211 includes a second spiral abutment surface 12112 and a second stop surface 12113. The second spiral abutment surface 12112 extends along a spiral path around a preset axis. The spiral direction of the second spiral abutment surface 12112 is the same as the spiral direction of the first spiral abutment surface 22111, and the spiral angle of the second spiral abutment surface 12112 is the same as the spiral angle of the first spiral abutment surface 22111. That is, the spiral parameters of the first spiral abutment surface 22111 and the second spiral abutment surface 12112 are the same. The second stop surface 12113 is connected to the end of the second spiral abutment surface 12112 and extends along the extension direction of the preset axis. During the process of the first connecting seat 11 and the second connecting seat 21 moving towards each other, the second spiral abutment surface 12112 is attached to the first spiral abutment surface 22111 and slides along the first spiral abutment surface 22111 toward the first stop surface 22112 until the second stop surface 12113 is attached to the first stop surface 22112. The consistency of the helical parameters between the second helical abutment surface 12112 and the first helical abutment surface 22111 allows for a larger contact area and more uniform force distribution between the abutment structure 1211 and the first helical abutment surface 22111. This enables the second helical abutment surface 12112 to slide precisely along the first helical abutment surface 22111. Combined with the fitting and limiting action of the second stop surface 12113 and the first stop surface 22112, this further improves the angular alignment accuracy between the rotating shaft core 221 and the rotating bracket 121, ensuring a stable electrical connection between the electrical connector male and electrical connector female. Simultaneously, the complete fit between the second helical abutment surface 12112 and the first helical abutment surface 22111 disperses the axial and circumferential forces during docking, preventing deformation caused by excessive force at a single contact point and enhancing the structural stability of the rotating bracket 121 and the rotating shaft core 221 after docking. In addition, compared to the rotary drive pin 12111, this surface contact mating method is more adaptable to minor assembly errors than point contact, improving the docking fault tolerance rate. It can also achieve smooth docking without the need for precise alignment of the initial angle, continuing the convenience of semi-blind mating and taking into account both connection reliability and operational efficiency.

[0089] It should be noted that this connection mechanism can also be applied between other devices that require electrical connection, such as connecting optical catheters and control consoles in endoscopic examinations, connecting end effectors and drive arms of minimally invasive surgical robots, and docking precision rotary tables and drive modules in industrial fields, etc. There are no limitations here.

[0090] The above description is merely a preferred embodiment of this application, and only specifically describes the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this interpretation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A connecting mechanism applied to an ultrasonic system, the ultrasonic system comprising an ultrasonic conduit (110) and a rotary drive (210), characterized in that, The connecting mechanism includes a first connecting component (10) and a second connecting component (20). The first connecting component (10) includes a first connecting seat (11) and a first electrical connector (12). The first electrical connector (12) is used to connect the ultrasonic catheter (110). The first connecting seat (11) is rotatably connected to the first electrical connector (12). The second connecting component (20) includes a second connecting seat (21) and a second electrical connector (22). The second electrical connector (22) is used to connect the rotary drive (210). The second connecting seat (21) is rotatably connected to the second electrical connector (22). The first electrical connector (12) and the second electrical connector (22) are detachably connected such that the rotation axes of the first connector (11) and the second connector (21) coincide. One of the first connector (11) and the second connector (21) is provided with a spiral track (211) extending along a spiral path around the rotation axis of the first connector (11). The other is provided with a sliding structure (111) slidably connected to the spiral track (211). The sliding structure (111) can slide from the starting end of the spiral track (211) toward the end of the spiral track (211) during the movement of the first connector (11) and the second connector (21) toward each other.

2. The connecting mechanism as described in claim 1, characterized in that, The spiral track (211) is a groove track (2111), and the sliding structure (111) is a protrusion (1111) that matches the groove track (2111).

3. The connecting mechanism as described in claim 1, characterized in that, The first connector (11) has a first connection hole (1101), the first electrical connector (12) is rotatably disposed in the first connection hole (1101), the second connector (21) has a second connection hole (2101), the second electrical connector (22) is rotatably disposed in the second connection hole (2101), and the second connector (21) can be fitted over the first connector (11).

4. The connecting mechanism as described in claim 3, characterized in that, The spiral track (211) is disposed on the wall of the second connecting hole (2101), and the sliding structure (111) is disposed on the outer peripheral side wall of the first connecting seat (11).

5. The connecting mechanism as described in claim 3, characterized in that, The spiral track (211) is disposed on the outer peripheral sidewall of the first connecting seat (11), and the sliding structure (111) is disposed on the wall of the hole that drives the second connecting hole (2101).

6. The connecting mechanism as described in claim 1, characterized in that, Multiple spiral tracks (211) are provided, and the multiple spiral tracks (211) are arranged sequentially around a preset axis. When the first electrical connector (12) and the second electrical connector (22) are connected, the preset axis coincides with the rotation axis of the first connecting seat (11) and the rotation axis of the second connecting seat (21). The number of sliding structures (111) is the same as the number of spiral tracks (211).

7. The connecting mechanism as described in any one of claims 1 to 6, characterized in that, The first electrical connector (12) includes a rotating bracket (121) and an electrical connector male (122), the rotating bracket (121) and the electrical connector male (122) being fixedly connected. The second electrical connector (22) includes a rotating shaft (221) and an electrical connector female (222), the rotating shaft (221) and the electrical connector female (222) being fixedly connected. The rotating shaft (221) can mate with the rotating bracket (121) and restrict the rotation direction of the rotating bracket (121). The electrical connector male (122) can be electrically connected to the electrical connector female (222) after the rotating shaft (221) mates with the rotating bracket (121).

8. The connecting mechanism as described in claim 7, characterized in that, The first electrical connector (12) also includes a sealing ring (123), which is sleeved on the outside of the rotating bracket (121) and press-fits against the first connecting seat (11).

9. The connecting mechanism as described in claim 7, characterized in that, One of the rotating bracket (121) and the rotating shaft (221) is provided with a guide structure (2211), and the other is provided with an abutment structure (1211). The guide structure (2211) includes a first helical abutment surface (22111) and a first stop surface (22112). The first helical abutment surface (22111) extends along a helical path around a preset axis. The rotation direction of the first helical abutment surface (22111) is the same as the rotation direction of the helical track (211). The first stop surface (22112) is connected to the first helical abutment surface (2211). 1) at the end and extending along the extension direction of the preset axis; the abutment structure (1211) can abut against the first spiral abutment surface (22111) during the process of the first connecting seat (11) and the second connecting seat (21) moving towards each other, and slide along the first spiral abutment surface (22111) toward the first stop surface (22112), wherein, when the first electrical connector (12) and the second electrical connector (22) are connected, the preset axis coincides with the rotation axis of the first connecting seat (11) and the rotation axis of the second connecting seat (21).

10. The connecting mechanism as described in claim 9, characterized in that, When the sliding structure (111) is located at the end of the spiral track (211), the abutting structure (1211) abuts against the first stop surface (22112).

11. The connecting mechanism as described in claim 9, characterized in that, The rotating shaft (221) is provided with the guide structure (2211), and the rotating bracket (121) is provided with the abutment structure (1211).

12. The connecting mechanism as described in claim 11, characterized in that, The abutment structure (1211) includes a rotary drive pin (12111), which extends along the extension direction of the preset axis. The rotary drive pin (12111) can abut against the first spiral abutment surface (22111) during the process of the first connecting seat (11) and the second connecting seat (21) moving towards each other, and slide along the first spiral abutment surface (22111) toward the first stop surface (22112).

13. The connecting mechanism as described in claim 11, characterized in that, The abutting structure (1211) includes a second spiral abutting surface (12112) and a second stop surface (12113). The second spiral abutting surface (12112) extends along a spiral path around the preset axis. The spiral direction of the second spiral abutting surface (12112) is the same as that of the first spiral abutting surface (22111). The spiral angle of the second spiral abutting surface (12112) is the same as that of the first spiral abutting surface (22111). The second stop surface (12113) is connected to the end of the second spiral abutting surface (12112) and extends along the extension direction of the preset axis. During the process of the first connecting seat (11) and the second connecting seat (21) moving towards each other, the second spiral abutting surface (12112) is attached to the first spiral abutting surface (22111) and slides along the first spiral abutting surface (22111) toward the first stop surface (22112).

14. The connecting mechanism as described in claim 9, characterized in that, Multiple guide structures (2211) are provided, and the multiple guide structures (2211) are arranged sequentially around the preset axis. The number of abutment structures (1211) is the same as the number of guide structures (2211).

15. An ultrasonic device (100), characterized in that, Includes an ultrasonic catheter (110) and a first connecting assembly (10) as described in any one of claims 1 to 14, wherein the ultrasonic catheter (110) includes a catheter body and an acoustic head, and the two ends of the catheter body are respectively connected to the acoustic head and the first electrical connector (12).

16. A driving device (200), characterized in that, Includes a rotary drive (210) and a second connection assembly (20) as described in any one of claims 1 to 14, wherein the drive shaft (210a) of the rotary drive (210) is connected to the second electrical connector (22), and the rotary drive (210) is capable of driving the second electrical connector (22) to rotate about the rotation axis of the second connection seat (21).

17. An ultrasonic system, characterized in that, It includes the ultrasonic device (100) as described in claim 15 and the driving device (200) as described in claim 16.

Images