Ultrasonic catheter and ultrasonic equipment

Abstract

The utility model discloses an ultrasonic catheter and ultrasonic equipment, and relates to the technical field of medical instruments.The ultrasonic catheter comprises a catheter body and an ultrasonic probe, the ultrasonic probe is connected to the far end of the catheter body, and the catheter body comprises a first pipe fitting and a second pipe fitting; the far end of the first pipe fitting comprises a deflection section, and the deflection section can be controlled to bend to drive the working surface of the ultrasonic probe to change the spatial orientation; the second pipe fitting and the first pipe fitting are coaxially arranged, and the second pipe fitting can be driven to rotate circumferentially so as to drive the working surface of the ultrasonic probe to rotate relative to the first pipe fitting; the ultrasonic probe emits ultrasonic waves in multiple directions of the spatial orientation along with bending of the first pipe fitting and rotation of the second pipe fitting. According to the ultrasonic catheter, bending is controlled through the deflection section, rotation is controlled through the second pipe fitting, and the problem that in the prior art, deflection and rotation functions of an ultrasonic catheter are difficult to achieve at the same time is effectively solved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an ultrasonic catheter and ultrasonic equipment. Background Technology

[0002] Ultrasonic catheters utilize ultrasound technology, enabling doctors to perform imaging or therapeutic functions during interventional procedures.

[0003] In practice, the inventors discovered the following defects in existing ultrasonic catheters:

[0004] Existing ultrasound interventional catheters struggle to simultaneously handle deflection and rotation. When the ultrasound probe of the catheter needs to rotate in a bent state to change its working direction, current ultrasound catheters typically involve first returning the catheter to its zero position (its natural state when not being manipulated, generally with a bending angle close to 0°), then rotating the catheter as a whole by a certain angle, and finally readjusting the catheter from the zero position to the bent state to achieve the switching of the ultrasound probe's orientation. This process is cumbersome, and because catheter rotation and deflection are not independent, catheter movement is usually accompanied by bending, movement, and rotation, causing the ultrasound probe to oscillate. This can lead to target loss or instability, making it difficult to maintain the curved shape of the ultrasound catheter and control the ultrasound probe's working surface to face multiple different directions in this state.

[0005] Therefore, how to control the ultrasound catheter to obtain a stable curved shape and rotate in a stable curved state, so as to exert imaging or therapeutic functions in different directions of the target space, is an urgent problem to be solved in this field. Utility Model Content

[0006] The purpose of this application is to provide an ultrasonic catheter and ultrasonic device to solve at least one of the technical problems mentioned in the prior art.

[0007] To achieve the above objectives, this application provides an ultrasonic catheter, including a tube body and an ultrasonic probe, wherein the ultrasonic probe is connected to the distal end of the tube body, and the tube body includes a first fitting and a second fitting;

[0008] The distal end of the first tube includes a deflection section, which can be controlled to bend to change the spatial orientation of the working surface of the ultrasonic probe.

[0009] The second tube is coaxially arranged with the first tube, and the second tube can be driven to rotate circumferentially to drive the working surface of the ultrasonic probe to rotate relative to the first tube.

[0010] The ultrasonic probe emits ultrasonic waves in multiple directions in the spatial orientation as the first tube bends and the second tube rotates.

[0011] In some embodiments, a limiting mechanism is further provided between the first pipe fitting and the second pipe fitting, the limiting mechanism allowing the second pipe fitting to rotate relative to the first pipe fitting and limiting the axial displacement between the first pipe fitting and the second pipe fitting.

[0012] In some embodiments, the first pipe fitting and the second pipe fitting are arranged side by side, and the second pipe fitting is provided with a deflection compliance section at a position close to the deflection section, and the deflection compliance section can bend synchronously with the deflection section;

[0013] One side of the limiting mechanism is connected to the deflection section, and the other side of the limiting mechanism is connected to the deflection compliance section.

[0014] In some embodiments, the limiting mechanism includes a first limiting member and a second limiting member, wherein the first limiting member is disposed along the circumference of the first pipe and the second limiting member is disposed along the circumference of the second pipe.

[0015] The first limiting member and the second limiting member block each other along the axial direction of the tube body, or one of the first limiting member and the second limiting member is internally rotatably connected to the other.

[0016] In some embodiments, the limiting mechanism includes a first limiting member, a second limiting member, and an intermediate member; the first limiting member is disposed on the first pipe, the second limiting member is disposed on the second pipe, and the intermediate member is disposed between the first limiting member and the second limiting member to reduce the contact area and / or coefficient of friction between the second limiting member and the second limiting member.

[0017] In some embodiments, a handle is also included, the handle including a rotating mechanism fixedly connected to the proximal end of the second tube, the rotating mechanism driving the second tube to rotate so as to rotate the ultrasound probe.

[0018] In some embodiments, the handle is further provided with a limiting groove;

[0019] The rotating mechanism is provided with a first knob and a rotating rod connected together. The first knob can be turned to rotate, and the rotating rod extends into the limiting groove of the handle.

[0020] The rotating rod is provided with a protrusion that cooperates with the limiting groove to achieve circumferential and axial limiting of the rotating mechanism.

[0021] In some embodiments, a handle is also included, the proximal end of the first tube is connected to the handle, the handle includes a bending mechanism, the bending mechanism includes a traction member and a bending body, the proximal end of the traction member is connected to the bending body, the distal end of the traction member passes through the first tube and is connected to the deflection segment, and the bending body pulls the traction member to drive the deflection segment to bend.

[0022] In some embodiments, the bending body includes a second knob and a transmission component. The second knob can be turned to rotate, and there is gear transmission between the second knob and the transmission component. The traction component is a pull cable, and the proximal end of the pull cable is connected to either the second knob or the transmission component. The second knob can be rotated to change the winding length of the pull cable on the bending body to adjust the degree of bending of the deflection segment.

[0023] In some embodiments, the first pipe fitting and the second pipe fitting are arranged side by side, wherein...

[0024] The second tube is fitted over the first tube, or the first tube is fitted over the second tube and the distal end of the second tube extends outward relative to the distal end of the first tube and is on which the ultrasonic probe is mounted; and,

[0025] The deflection segment is connected to the traction member and is controlled to bend by the traction member. The number of traction members is 2N, where N is a positive integer. The traction members are circumferentially symmetrically distributed relative to the deflection segment.

[0026] This application also provides an ultrasound device, including an ultrasound system and the aforementioned ultrasound catheter, wherein the ultrasound system is signal-connected to the ultrasound catheter, and the ultrasound probe is excited to collect image information or emit ablation energy in multiple directions of the spatial orientation.

[0027] Compared to the aforementioned background technology, the ultrasonic catheter provided in this application mainly includes a tube body and an ultrasonic probe. The ultrasonic probe is connected to the distal end of the tube body. The tube body includes a first tube and a second tube. The distal end of the first tube includes a deflection section, which can be controlled to bend to change the spatial orientation of the working surface of the ultrasonic probe. The second tube is coaxially arranged with the first tube and can be driven to rotate circumferentially to rotate the working surface of the ultrasonic probe relative to the first tube. The ultrasonic probe emits ultrasonic waves in multiple spatial directions as the first tube bends and the second tube rotates.

[0028] As mentioned in the background section, existing ultrasound catheters often suffer from unnecessary bending or movement during ultrasound probe rotation, causing probe wobbling and resulting in target loss or image instability. This coupled operation limits catheter flexibility and control precision, a problem particularly pronounced in cardiac interventional surgeries requiring precise control and stable imaging.

[0029] To address this issue, the ultrasonic catheter technology solution provided in this application achieves independent operation of the deflection section controlling bending and the second fitting controlling rotation through innovative design. Specifically, the ultrasonic catheter includes a tube body and an ultrasonic probe, wherein the tube body consists of a first fitting and a second fitting. The distal end of the first fitting has a deflection section that can be independently controlled to bend, thereby changing the spatial orientation of the working surface of the ultrasonic probe without being affected by the movement of other parts of the catheter. The second fitting is coaxially arranged with the first fitting and can independently rotate circumferentially, further adjusting the working surface of the ultrasonic probe so that it can rotate relative to the first fitting, realizing the emission of ultrasonic waves in multiple different directions.

[0030] This design allows the ultrasound catheter to maintain a certain curved shape while stably controlling the orientation of the ultrasound probe's working surface, solving the problem in existing technologies where catheters struggle to simultaneously handle deflection and rotation. By independently controlling the deflection section and the second fitting, the ultrasound catheter can reduce ultrasound probe wobbling caused by catheter movement, lowering the risk of target loss or image instability, and improving imaging stability and surgical precision. Therefore, this technical solution not only provides an ultrasound catheter that can stably maintain a curved shape but also precisely control the orientation of the ultrasound probe's working surface in multiple different directions, significantly improving surgical adaptability and effectiveness, and meeting the medical field's demand for high-precision ultrasound catheters.

[0031] Based on the above structural and process descriptions, it can be seen that the ultrasound catheter has at least the following beneficial effects: the ultrasound catheter controls bending through the deflection section and rotation through the second tube, effectively solving the problem that ultrasound catheters in the prior art cannot simultaneously take into account deflection and rotation functions. It provides an ultrasound catheter that can stably maintain the bending shape and control the working surface of the ultrasound probe to face multiple different directions in this state, thereby improving the stability of imaging and the precision of surgery. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 A schematic diagram of an ultrasonic catheter provided in an embodiment of this application;

[0034] Figure 2 A schematic diagram of the tube body provided in the embodiments of this application;

[0035] Figure 3 for Figure 2 Schematic diagram at point A;

[0036] Figure 4 for Figure 2 A schematic diagram of a BB (Baby Window) diagram;

[0037] Figure 5 A schematic diagram of a handle provided in an embodiment of this application;

[0038] Figure 6 This is a schematic diagram of an ultrasonic probe provided in an embodiment of this application.

[0039] in:

[0040] Pipe body 1, first fitting 11, deflection section 111, second fitting 12, deflection compliant section 121

[0041] 2. Ultrasonic probe; 21. Transducer sheath; 22. Transducer; 23. Core wire.

[0042] Limiting mechanism 3, first limiting component 31, second limiting component 32, intermediate component 33

[0043] Handle 4, Rotating mechanism 41, First knob 411, Rotating rod 412, Protrusion 4121, Limiting groove 42, Bending mechanism 43, Traction component 431, Bending body 432, Second knob 4321, Transmission component 4322, Transmission gear 4323. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The distal end of the ultrasound catheter is positioned within a blood vessel or cavity in the target area. The end closer to the operator (e.g., a medical professional) is defined as the proximal end, and the end used to insert into the patient's body is defined as the distal end. For a single component, the end closer to the operator is the proximal end, and the end further away from the operator is the distal end.

[0046] The primary function of ultrasound technology in interventional surgery is to use ultrasound probes as imaging probes or as ablation elements to perform imaging or therapeutic functions within the human body. For applications requiring continuous ablation or dynamic imaging, it is necessary to be able to continuously adjust the orientation of the working surface of the ultrasound probe. Simultaneously, to reach the location of interest to the operator, especially in areas with complex anatomical structures, the catheter needs to bend into a specific shape, and the ultrasound probe needs to be rotated while maintaining this bending shape to obtain multi-directional image information of the location of interest or to perform continuous ablation. The following example uses intracardiac ultrasound. Those skilled in the art should understand that applying the ultrasound catheter of this application to the field of ablation, or to imaging other human tissue structures, does not exceed the scope of protection of this application, and those skilled in the art can directly apply this ultrasound catheter without inventive effort.

[0047] In intracardiac ultrasound, the ultrasound catheter described in this application allows for independent bending and rotation of the catheter body. It enables real-time dynamic imaging by maintaining the catheter in a bent position while simultaneously rotating it at a specific target location. This avoids distal catheter oscillation at the target position, ensuring clear images can be acquired from different angles and positions. Operators can then observe cardiac structures from multiple planes at locations of interest, obtaining more comprehensive imaging information. This multi-angle imaging not only improves image resolution but also better identifies fine cardiac structures and lesions, thereby enhancing diagnostic accuracy.

[0048] Please refer to Figure 1 and Figure 2 ,in, Figure 1 This is a schematic diagram of an ultrasonic catheter provided in an embodiment of this application. Figure 2 This is a schematic diagram of the tube provided in an embodiment of this application.

[0049] In a first specific embodiment, the ultrasonic catheter provided in this application mainly includes a tube body 1 and an ultrasonic probe 2. The ultrasonic probe 2 is connected to the distal end of the tube body 1. The tube body 1 includes a first tube 11 and a second tube 12. The distal end of the first tube 11 includes a deflection section 111, which can be controlled to bend to change the spatial orientation of the working surface of the ultrasonic probe 2. The second tube 12 is coaxially arranged with the first tube 11 and can be driven to rotate circumferentially to rotate the working surface of the ultrasonic probe 2 relative to the first tube 11. The ultrasonic probe 2 emits ultrasonic waves in multiple directions of spatial orientation as the first tube 11 bends and the second tube 12 rotates.

[0050] As mentioned in the background section, existing ultrasound catheters often suffer from unnecessary bending or movement during the rotation of the ultrasound probe 2, causing the probe 2 to oscillate and resulting in loss of the imaging target or image instability. This coupled operation method limits the flexibility and precision of catheter manipulation, a problem that is particularly prominent in cardiac interventional surgeries requiring precise manipulation and stable imaging.

[0051] To address this issue, the ultrasonic catheter technology solution provided in this application achieves independent operation of the bending controlled by the deflection section 111 and the rotation controlled by the second tube 12 through innovative design. Specifically, the ultrasonic catheter includes a tube body 1 and an ultrasonic probe 2, wherein the tube body 1 is composed of a first tube 11 and a second tube 12. The distal end of the first tube 11 is provided with a deflection section 111, which can be independently controlled to bend, thereby changing the spatial orientation of the working surface of the ultrasonic probe 2 without being affected by the movement of other parts of the catheter. The second tube 12 is coaxially arranged with the first tube 11 and can rotate independently in the circumferential direction, further adjusting the working surface of the ultrasonic probe 2 so that it can rotate relative to the first tube 11, realizing the emission of ultrasonic waves in multiple different directions.

[0052] This design reduces interference between bending and rotational movements, allowing the ultrasound catheter to maintain a certain bending shape while stably controlling the orientation of the working surface of the ultrasound probe 2. This solves the problem in existing technologies where catheters struggle to simultaneously handle deflection and rotation. By independently controlling the deflection section 111 and the second fitting 12, the ultrasound catheter can reduce the oscillation of the ultrasound probe 2 caused by catheter movement, lowering the risk of target loss or image instability, and improving imaging stability and surgical precision. Therefore, this technical solution not only provides an ultrasound catheter that can stably maintain a bending shape but also precisely control the orientation of the working surface of the ultrasound probe 2 in multiple different directions within this bending state, significantly improving surgical adaptability and effectiveness, and meeting the medical field's demand for high-precision ultrasound catheters.

[0053] Based on the above structural and process descriptions, it can be seen that the ultrasonic catheter has at least the following beneficial effects: the ultrasonic catheter controls bending through the deflection section 111 and rotation through the second tube 12, effectively solving the problem that ultrasonic catheters in the prior art are difficult to balance deflection and rotation functions. It provides an ultrasonic catheter that can stably maintain the bending shape and control the working surface of the ultrasonic probe 2 to face multiple different directions in this state, thereby improving the stability of imaging and the accuracy of surgery.

[0054] In this application, the ultrasound probe 2 can function as both a detection imaging device and an ablation therapy device. Specifically, the following description will focus on the imaging function as the application scenario.

[0055] An ultrasound probe 2 is connected to the distal end of a tube body 1, which includes a first tube 11 and a second tube 12. The distal end of the first tube 11 includes a deflection section 111, which can be controlled to bend, thereby changing the spatial orientation of the working surface of the ultrasound probe 2 and achieving precise imaging of internal structures such as the heart. The second tube 12 is coaxially arranged with the first tube 11 and can be driven to rotate circumferentially, causing the working surface of the ultrasound probe 2 to rotate relative to the first tube 11. This allows the ultrasound probe 2 to emit ultrasound waves in multiple spatial directions for omnidirectional imaging. This design allows the ultrasound catheter to maintain a certain bending shape while stably controlling the orientation of the working surface of the ultrasound probe 2, solving the problem in existing technologies where catheters cannot simultaneously achieve deflection and rotation functions, thus improving imaging stability and surgical precision.

[0056] Please continue to refer to this. Figure 2 In some embodiments, a limiting mechanism 3 is also included, which is disposed between the first pipe 11 and the second pipe 12. The limiting mechanism 3 allows the second pipe 12 to rotate relative to the first pipe 11 and limits the axial displacement between the first pipe 11 and the second pipe 12.

[0057] In this embodiment, a limiting mechanism 3 is specially added to the technical solution. This mechanism is set between the first pipe fitting 11 and the second pipe fitting 12 and plays a key auxiliary role.

[0058] The main function of the limiting mechanism 3 is to allow the second tube 12 to rotate relative to the first tube 11 while limiting the axial displacement between the two. This design ensures that the ultrasonic probe 2 can flexibly adjust the orientation of its working surface without unwanted axial movement, which is crucial for precisely controlling the position and orientation of the ultrasonic probe 2.

[0059] It should be understood that this mechanism of the limiting mechanism 3 can enhance the operational stability and reliability of the ultrasound catheter, especially during complex interventional procedures, ensuring that the ultrasound probe 2 is kept in the correct position and orientation, thereby improving the accuracy and safety of the procedure.

[0060] It should be noted that axial displacement refers to the positional change of the first tube 11 and the second tube 12 along the axis of the ultrasonic catheter. The design of the limiting mechanism 3 allows for two different axial displacement control methods: one is to completely restrict the axial displacement between the first tube 11 and the second tube 12, ensuring that the two tubes are fixed in the axial direction; the other is to allow limited axial movement between the two tubes to adapt to different usage requirements. This flexible design ensures both the accuracy of catheter operation and provides the necessary adjustment space.

[0061] Please continue to refer to this. Figure 2 In some embodiments, the first pipe 11 and the second pipe 12 are arranged side by side, and the second pipe 12 is provided with a deflection compliance section 121 at a position close to the deflection section 111. The deflection compliance section 121 can bend synchronously with the deflection section 111.

[0062] One side of the limiting mechanism 3 is connected to the deflection section 111, and the other side of the limiting mechanism 3 is connected to the deflection compliance section 121. Furthermore, one side of the limiting mechanism 3 is connected to the distal end of the deflection section 111, and the other side of the limiting mechanism 3 is connected to the distal end of the deflection compliance section 121. The working surface of the ultrasonic probe is positioned between the distal end of the tube and the deflection section 111. Thus, the limiting mechanism 3 is positioned at the distal ends of the deflection section 111 and the deflection compliance section 121. The limiting mechanism 3 is close to the ultrasonic probe, allowing it to receive both bending and rotational forces, and ensuring a more stable force transmitted to the ultrasonic probe, preventing probe oscillation and improving the imaging or ablation effect of the ultrasonic probe's working surface.

[0063] In some embodiments, the first tube 11 and the second tube 12 are arranged side by side. This arrangement allows the two tubes to fit together tightly in space, improving the stability of the overall structure and the flexibility of operation. Specifically, the second tube 12 has a specially designed deflection compliant section 121 near the deflection section 111. The important function of this deflection compliant section 121 is to bend synchronously with the deflection section 111, ensuring that the second tube 12 can adapt to the bending changes of the first tube 11 when the working surface of the ultrasonic probe 2 is adjusted in space, maintaining overall coordination and consistency. Furthermore, the limiting mechanism 3 is connected to the deflection section 111 on one side and to the deflection compliant section 121 on the other side, which not only limits the axial displacement between the first tube 11 and the second tube 12 but also provides stable support when the two tubes rotate or bend relative to each other. With this connection method, the limiting mechanism 3 is set in the bendable part of the tube body 1, which fully mobilizes the deflection conforming section 121 to bend synchronously with the deflection section 111, ensuring the accuracy and reliability of the ultrasonic catheter during the bending process. At the same time, the setting of the limiting mechanism 3 leaves a gap between the first tube 11 and the second tube 12, thereby ensuring that the second tube 12 does not affect the first tube 11 when it rotates, and also protects the internal ultrasonic probe 2. This sophisticated design fully considers that intracardiac ultrasound catheters, which are typically around 1 meter in length due to their need to probe cardiac tissue, require appropriate limiting structures. Furthermore, if there is a gap between the first tube 11 and the second tube 12, the operator's external manipulation of the catheter at the proximal end can easily lead to relative movement between the first and second tubes, making it difficult to ensure consistent bending shapes and achieve the desired distal bending shape. Simultaneously, if the distal ends of the two tubes are not mutually restrained, the first tube 11, driven by its distal end, may bend independently. Friction and the gap between the first and second tubes can cause excessive bending of the first tube 11 to drive the second tube 12 to bend. In this case, the first tube 11 is prone to bending and damage, leading to distal end movement failure and reduced catheter lifespan. Therefore, by setting the limiting mechanism 3 on the bendable part of the tube body 1, the synchronous bending requirements and separate control requirements of the first tube 11 and the second tube 12 are well balanced. This ensures that the tube body has a consistent degree and shape of bending at least at and near the location of the limiting mechanism 3, thereby achieving stable bending shape control of the ultrasound catheter. The limiting mechanism 3, as a design to ensure the bending initiation point, allows the operator's bending control at the proximal end to be better transmitted to the distal end of the catheter, reducing the transmission distortion rate. It also ensures the separate movement of the first tube 11 and the second tube 12. The ultrasound probe rotates in a stable bending state, thereby performing imaging or treatment functions in different directions of the target space. This allows the ultrasound catheter to be operated more stably, flexibly, and safely in the human body.

[0064] The connection between the aforementioned limiting mechanism 3 and the first pipe fitting 11 and the second pipe fitting 12 can be by bonding, welding or other stable connection methods.

[0065] To improve the synchronicity and consistency of the bending of the deflection section 111 of the first fitting 11 and the deflection compliant section 121 of the second fitting 12, in some cases, the deflection section 111 of the first fitting 11 and the deflection compliant section 121 of the second fitting 12 are made of relatively soft materials, while other parts of the first fitting 11 and the second fitting 12 are made of relatively hard materials. In other cases, the first fitting 11, as the inner tube, is set to have a greater thickness than the second fitting 12, which can provide greater bending stress when the conduit is bent, thereby driving the deflection compliant section 121 of the second fitting 12 to bend.

[0066] Please refer to Figure 3 and Figure 4 ,in, Figure 3 for Figure 2 AA diagram, Figure 4 for Figure 2 A schematic diagram of BB.

[0067] In some embodiments, the limiting mechanism 3 includes a first limiting member 31 and a second limiting member 32, wherein the first limiting member 31 is arranged along the circumference of the first pipe 11 and the second limiting member 32 is arranged along the circumference of the second pipe 12.

[0068] The first limiting member 31 and the second limiting member 32 block each other along the axial direction of the tube body 1, or one of the first limiting member 31 and the second limiting member 32 is internally rotatably connected to the other.

[0069] In this embodiment, the limiting mechanism 3 consists of a first limiting member 31 and a second limiting member 32, which are respectively arranged along the circumference of the first tube 11 and the second tube 12. This arrangement allows the first limiting member 31 and the second limiting member 32 to rotate circumferentially and block each other axially in the tube body 1, thereby limiting the axial displacement between the first tube 11 and the second tube 12 and ensuring a rotatable connection between them. Furthermore, the first limiting member 31 and the second limiting member 32 can be internally rotatably connected; for example, a circumferential slide rail (not shown) is provided on one of them, and a boss (not shown) extending into the slide rail is provided on the other. This design allows for a certain degree of rotational freedom while still maintaining control over axial displacement. This structure ensures sufficient stability while providing the necessary flexibility to adapt to different surgical procedures and catheter position adjustment needs.

[0070] It should be noted that the first limiting member 31 and the second limiting member 32 mentioned in the design of the limiting mechanism 3 are arranged along the circumference of the first pipe 11 and the second pipe 12, and are not limited to a specific geometric shape. This means that the first limiting member 31 and the second limiting member 32 can be arranged as closed rings or as open rings. Regardless of whether the design is closed or open, the key is that they can provide the necessary limiting function along the circumference of the pipe. This design flexibility allows the most suitable configuration to be selected according to specific application requirements and manufacturing convenience, ensuring that the limiting mechanism 3 can effectively restrict the relative movement of the first pipe 11 and the second pipe 12 along the axial direction of the pipe body 1, or allow a certain degree of rotational fit between them to adapt to different operating conditions.

[0071] In some embodiments, the limiting mechanism 3 includes a first limiting member 31, a second limiting member 32, and an intermediate member 33; the first limiting member 31 is disposed on the first pipe 11, the second limiting member 32 is disposed on the second pipe 12, and the intermediate member 33 is disposed between the first limiting member 31 and the second limiting member 32 to reduce the contact area and / or coefficient of friction between the second limiting member 32 and the second limiting member 32.

[0072] In this embodiment, as Figure 3 As shown, the design of the limiting mechanism 3 is further refined, including a first limiting member 31, a second limiting member 32, and a newly introduced intermediate member 33. The first limiting member 31 is mounted on the first tube 11, while the second limiting member 32 is mounted on the second tube 12. The intermediate member 33 is cleverly positioned between the first limiting member 31 and the second limiting member 32. The main advantage of this configuration is that the intermediate member 33 can effectively reduce the contact area between the first limiting member 31 and / or the second limiting member 32 and itself or other components, or reduce the coefficient of friction through material adjustment. By reducing the contact area and the coefficient of friction, the limiting mechanism 3 can operate more smoothly, reduce wear, extend the service life of the ultrasonic catheter, and improve operational flexibility and precision. This ingenious design demonstrates how to improve overall performance through detailed optimization while maintaining structural stability.

[0073] In some cases, intermediate component 33 can be a washer or a ball bearing.

[0074] Please refer to Figure 5 , Figure 5 This is a schematic diagram of a handle provided in an embodiment of this application.

[0075] In some embodiments, a handle 4 is also included, which includes a rotating mechanism 41 fixedly connected to the proximal end of the second tube 12. The rotating mechanism 41 drives the second tube 12 to rotate, thereby causing the ultrasonic probe 2 to rotate.

[0076] In this embodiment, the ultrasound catheter system includes a handle 4, which is equipped with a rotating mechanism 41 fixedly connected to the proximal end of the second tubing 12. The main function of the rotating mechanism 41 is to drive the second tubing 12 to rotate. This rotational motion is transmitted to the ultrasound probe 2 connected to the distal end of the tubing, allowing the ultrasound probe 2 to rotate around its axis. This design allows the operator to precisely control the rotation of the ultrasound probe 2 via the rotating mechanism 41 on the handle 4, thereby adjusting the orientation of the probe's working surface to suit different imaging or treatment needs. This handle design provides a simple and direct method to control the direction of the ultrasound probe 2, enhancing flexibility and control precision during the procedure.

[0077] In some embodiments, the handle 4 is also provided with a limiting groove 42;

[0078] The rotating mechanism 41 is provided with a first knob 411 and a rotating rod 412 connected together. The first knob 411 can be turned to rotate, and the rotating rod 412 extends into the limiting groove 42 of the handle 4.

[0079] The rotating rod 412 is provided with a protrusion 4121 that cooperates with the limiting groove 42 to realize the circumferential and axial limiting of the rotating mechanism 41.

[0080] In this embodiment, the design of the handle 4 is further enhanced by adding a new feature: a limiting groove 42. The rotating mechanism 41 consists of a first knob 411 and a rotating rod 412, wherein the first knob 411 can be turned by the operator to achieve rotation, and the rotating rod 412 extends and inserts into the limiting groove 42 of the handle 4. This design allows the rotating mechanism 41 to be precisely limited in both the circumferential and axial directions.

[0081] The rotating rod 412 is specially designed with a protrusion 4121, which cooperates with the limiting groove 42 to ensure that the rotating mechanism 41 can stably maintain its current position during rotation, preventing unwanted movement or deviation of the rotating mechanism 41 during operation. The function of the protrusion 4121 is to provide restraint for the rotating mechanism 41 in the circumferential and axial directions, enhancing the operational stability and reliability of the ultrasonic catheter, and making the rotation control of the ultrasonic probe 2 more precise and smooth.

[0082] In some embodiments, a handle 4 is also included. The proximal end of the first tube 11 is connected to the handle 4. The handle 4 includes a bending mechanism 43. The bending mechanism 43 includes a traction member 431 and a bending body 432. The proximal end of the traction member 431 is connected to the bending body 432. The distal end of the traction member 431 passes through the first tube 11 and is connected to the deflection section 111. The bending body 432 pulls the traction member 431 to drive the deflection section 111 to bend.

[0083] In this embodiment, the handle 4 is not only connected to the proximal end of the first tube 11, but also integrates a bending mechanism 43 for controlling the bending of the deflection segment 111 in the ultrasonic catheter. The bending mechanism 43 consists of a traction member 431 and a bending body 432, wherein one end of the traction member 431 is connected to the bending body 432, and the other end extends through the first tube 11 and is finally connected to the deflection segment 111. By operating the bending body 432, the traction member 431 can be stretched or relaxed, thereby achieving precise control over the bending of the deflection segment 111.

[0084] This design allows the operator to directly control the degree of bending of the deflection section 111 via the bending adjustment mechanism 43 on the handle 4, thereby adjusting the spatial orientation of the ultrasound probe 2 to adapt to different surgical needs and target areas. This mechanical connection of the traction member 431 provides a direct and effective means of adjusting the bending state of the catheter, enhancing flexibility and control precision during the surgical process, and helping to improve the accuracy and efficiency of the surgery.

[0085] In some embodiments, the bending body 432 includes a second knob 4321 and a transmission member 4322. The second knob 4321 can be turned to rotate. There is gear transmission between the second knob 4321 and the transmission member 4322. The traction member 431 is a pull cable. The proximal end of the pull cable is connected to either the second knob 4321 or the transmission member 4322. The second knob 4321 can change the winding length of the pull cable on the bending body 432 by rotating to adjust the degree of bending of the deflection section 111.

[0086] In this embodiment, the bending body 432 includes a second knob 4321 and a transmission component 4322. The second knob 4321 is a manually operable component, allowing the operator to control the transmission component 4322 by rotation. These two components are connected via gear transmission, ensuring precise transmission of rotational movements. The traction component 431 is designed as a pull cable, with its proximal end connected to either the second knob 4321 or the transmission component 4322. This connection allows adjustment of the bending degree of the deflection segment 111 by changing the winding length of the pull cable.

[0087] Specifically, when the second knob 4321 is rotated, the gear transmission mechanism drives the transmission component 4322, thereby adjusting the tension and length of the pull cable. As the length of the pull cable wound on the bending body 432 changes, the degree of bending of the deflection section 111 is adjusted accordingly. This design allows the operator to precisely control the bending shape of the ultrasound catheter to adapt to different surgical needs and target areas. By finely adjusting the bending of the deflection section 111, the positioning of the ultrasound probe 2 can be optimized, improving the flexibility and accuracy during the surgical procedure.

[0088] Specifically, the transmission component 4322 adopts a gear rod, and the second knob 4321 is connected to the transmission gear 4323, with the gear rod meshing with the transmission gear 4323.

[0089] In some embodiments, the deflection segment 111 is connected to the traction member 431 and is controlled to bend by the traction member 431. The number of traction members 431 is 2N, where N is a positive integer. The traction members 431 are circumferentially symmetrically distributed relative to the deflection segment 111.

[0090] In this embodiment, the bending operation of the deflection segment 111 is achieved through the traction member 431, which is connected to and controls the bending of the deflection segment 111. The number of traction members 431 is 2N, where N is a positive integer, meaning that the traction members 431 exist in pairs, ensuring that the deflection segment 111 can be bent uniformly and precisely in multiple directions. This design of the traction members 431 allows for fine control of the deflection segment 111 because they are circumferentially symmetrically distributed relative to the deflection segment 111, making the bending of the deflection segment 111 more flexible, stable, and controllable.

[0091] This symmetrically distributed traction element 431 design provides precise control over the bending direction and angle of the deflection segment 111, which is crucial for the accurate positioning of the ultrasound probe 2. By adjusting the tension of the traction element 431, the bending state of the deflection segment 111 can be changed, thereby adjusting the spatial orientation of the ultrasound probe 2 so that it can be aligned with the target area for imaging or treatment. This design enhances the operational flexibility of the ultrasound catheter, enabling it to adapt to complex internal environments and diverse surgical needs.

[0092] Specifically, there are two sets of transmission components 4322 and pull wires, which are symmetrically arranged. When the second knob 4321 is rotated, the second knob 4321 drives the transmission components 4322 on both sides to rotate. The rotation directions of the two transmission components 4322 are opposite, which tightens the pull wire on one side and loosens the pull wire on the other side. By changing the rotation direction of the second knob 4321, the bidirectional bending of the ultrasonic catheter can be achieved.

[0093] In some cases, the pull wires and deflection sections 111 can be fixed by embedding, welding, or gluing. The number of pull wires can be 1-4 or more, evenly distributed around the circumference of the inner conduit. During use, bending in the corresponding direction can be achieved by pulling the pull wires. Additionally, the bending profile can be controlled by adjusting the length ratio of the deflection section 111 within the first fitting 11.

[0094] In some embodiments, the first pipe fitting 11 and the second pipe fitting 12 are arranged side by side, wherein...

[0095] The second fitting 12 is sleeved outside the first fitting 11, or the first fitting 11 is sleeved outside the second fitting 12 and the distal end of the second fitting 12 extends outward relative to the distal end of the first fitting 11 and is fitted with an ultrasonic probe 2.

[0096] In this embodiment, the first tube 11 and the second tube 12 are arranged side by side, providing two different configuration options to adapt to different application scenarios. In the first configuration, the second tube 12 is fitted over the first tube 11. This design protects the inner first tube 11 while allowing the second tube 12 to operate independently. In the second configuration, the first tube 11 is fitted over the second tube 12, and the distal end of the second tube 12 extends outward relative to the distal end of the first tube 11. This arrangement allows the ultrasound probe 2 to be mounted on the extended portion of the second tube 12, facilitating imaging or treatment functions.

[0097] This flexible tubing configuration not only enhances the mechanical stability and operational flexibility of the ultrasound catheter but also allows for adjustments to the position and orientation of the ultrasound probe 2 according to specific clinical needs. Whether the second tubing 12 is fitted externally for protection or the first tubing 11 is fitted externally for easy installation of the ultrasound probe 2, these designs aim to optimize the performance of the ultrasound catheter, ensuring its effectiveness and reliability during surgery. In this way, it can be ensured that the ultrasound probe 2 can be precisely positioned to the target area when needed to perform the required medical procedures.

[0098] In some embodiments, such as Figure 5 As shown, the bending mechanism 43 and the rotating mechanism 41 on the handle 4 are arranged coaxially, or the first knob 411 and the second knob 4321 are distributed coaxially, so as to make the space compact and easy to operate with one hand.

[0099] Please continue to refer to this. Figure 1 In some cases, the ultrasonic catheter also includes a sheath and a connector, which are connected to the tail end of the handle 4. Conversely, the proximal end of the handle 4 is connected to the tube body 1. During use, the handle 4 is convenient for the operator to hold and operate. The core wire of the ultrasonic probe 2 passes through the sheath, and the connector is the interface part that connects to the tail wire of the corresponding device.

[0100] Please refer to Figure 6 , Figure 6 This is a schematic diagram of an ultrasonic probe provided in an embodiment of this application.

[0101] In some cases, the ultrasound probe 2 includes a transducer sheath 21, a transducer 22, and a core wire 23. The transducer sheath 21 is made of a material with good sound transmission properties, has a cylindrical shape and a flat inner hole. Taking the second tube 12 fitted outside the first tube 11 as an example, the outer dimensions of the transducer sheath 21 match the outer diameter of the second tube 12, and the inner hole matches the outer dimensions of the transducer 22, facilitating the insertion of the transducer 22 and protecting its ultrasonic emitting surface. The ultrasonic transducer 22 has a working surface that can emit and receive ultrasonic signals to obtain image information at the corresponding location. When the ultrasonic transducer 22 is used for ablation to perform therapeutic functions, this working surface is used to emit ultrasonic energy. The core wire 23 is connected to the transducer 22 and can export the signals received by the transducer 22 to the system end.

[0102] In some cases, continuing with the example of the second fitting 12 being fitted outside the first fitting 11, the interior of the first fitting 11 can be provided with a through hole for a pull wire. At the same time, sufficient gaps are reserved between the inner and outer layers to ensure that the inner layer is not affected when the outer layer rotates, thus not affecting the overall bending direction of the conduit during bending control.

[0103] This application also provides an ultrasound device, including an ultrasound system and the aforementioned ultrasound catheter, wherein the ultrasound system is signal-connected to the ultrasound catheter, and the ultrasound probe 2 is excited to collect image information or emit ablation energy in multiple directions of spatial orientation.

[0104] The ultrasound device includes the aforementioned ultrasound catheter and should possess all the beneficial technical effects of the aforementioned ultrasound catheter, which will not be elaborated here.

[0105] The ultrasonic device mentioned in this application is an integrated system that includes not only the ultrasonic conduit described in detail above, but also an ultrasonic system. This ultrasonic system is connected to the ultrasonic conduit via a signal link, ensuring effective data transmission and communication between the two. In this configuration, the ultrasonic probe 2, as an important component of the ultrasonic conduit, can be excited by the ultrasonic system to emit ultrasonic waves in multiple directions in space.

[0106] These ultrasound waves can penetrate biological tissue, and the reflected signals are received by the ultrasound probe 2, converted into image information, or used to deliver ablation energy for treatment. In imaging mode, the ultrasound system processes these collected signals and converts them into images that can be analyzed and interpreted by the doctor. This integrated ultrasound device design allows doctors to obtain clear image information in real time during surgery or to precisely apply ablation energy, improving the accuracy and safety of the procedure. Furthermore, this design simplifies the operation of the ultrasound device and improves surgical efficiency.

[0107] It should be noted that many of the components mentioned in this application are general standard parts or components known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0108] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0109] The ultrasonic catheter and ultrasonic equipment provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An ultrasonic catheter, characterized in that, It includes a tube body and an ultrasonic probe, the ultrasonic probe being connected to the distal end of the tube body, the tube body including a first fitting and a second fitting; The distal end of the first tube includes a deflection section, which can be controlled to bend to change the spatial orientation of the working surface of the ultrasonic probe. The second tube is coaxially arranged with the first tube, and the second tube can be driven to rotate circumferentially to drive the working surface of the ultrasonic probe to rotate relative to the first tube. The ultrasonic probe emits ultrasonic waves in multiple directions in the spatial orientation as the first tube bends and the second tube rotates.

2. The ultrasonic catheter according to claim 1, characterized in that, It also includes a limiting mechanism disposed between the first pipe fitting and the second pipe fitting, the limiting mechanism allowing the second pipe fitting to rotate relative to the first pipe fitting and limiting the axial displacement between the first pipe fitting and the second pipe fitting.

3. The ultrasonic catheter according to claim 2, characterized in that, The first pipe fitting and the second pipe fitting are arranged side by side. The second pipe fitting is provided with a deflection compliance section at a position close to the deflection section. The deflection compliance section can bend synchronously with the deflection section. One side of the limiting mechanism is connected to the deflection section, and the other side of the limiting mechanism is connected to the deflection compliance section.

4. The ultrasonic catheter according to claim 2, characterized in that, The limiting mechanism includes a first limiting member and a second limiting member, wherein the first limiting member is arranged along the circumference of the first pipe and the second limiting member is arranged along the circumference of the second pipe. The first limiting member and the second limiting member block each other along the axial direction of the tube body, or one of the first limiting member and the second limiting member is internally rotatably connected to the other.

5. The ultrasonic catheter according to claim 2, characterized in that, The limiting mechanism includes a first limiting member, a second limiting member, and an intermediate member; the first limiting member is disposed on the first pipe fitting, the second limiting member is disposed on the second pipe fitting, and the intermediate member is disposed between the first limiting member and the second limiting member to reduce the contact area and / or coefficient of friction between the second limiting member and the second limiting member.

6. The ultrasonic catheter according to any one of claims 1 to 5, characterized in that, It also includes a handle, which includes a rotating mechanism fixedly connected to the proximal end of the second tube, the rotating mechanism driving the second tube to rotate so as to drive the ultrasound probe to rotate.

7. The ultrasonic catheter according to claim 6, characterized in that, The handle is also provided with a limit groove; The rotating mechanism is provided with a first knob and a rotating rod connected together. The first knob can be turned to rotate, and the rotating rod extends into the limiting groove of the handle. The rotating rod is provided with a protrusion that cooperates with the limiting groove to achieve circumferential and axial limiting of the rotating mechanism.

8. The ultrasonic catheter according to any one of claims 1 to 5, characterized in that, It also includes a handle, the proximal end of the first pipe is connected to the handle, the handle includes a bending mechanism, the bending mechanism includes a traction member and a bending body, the proximal end of the traction member is connected to the bending body, the distal end of the traction member passes through the first pipe and is connected to the deflection section, and the bending body pulls the traction member to drive the deflection section to bend.

9. The ultrasonic catheter according to claim 8, characterized in that, The bending body includes a second knob and a transmission component. The second knob can be turned to rotate. There is gear transmission between the second knob and the transmission component. The traction component is a pull wire. The proximal end of the pull wire is connected to either the second knob or the transmission component. The second knob can be rotated to change the winding length of the pull wire on the bending body to adjust the degree of bending of the deflection segment.

10. The ultrasonic catheter according to claim 1, characterized in that, The first pipe fitting and the second pipe fitting are arranged side by side, wherein, The second tube is fitted over the first tube, or the first tube is fitted over the second tube and the distal end of the second tube extends outward relative to the distal end of the first tube and is on which the ultrasonic probe is mounted; and, The deflection segment is connected to the traction member and is controlled to bend by the traction member. The number of traction members is 2N, where N is a positive integer. The traction members are circumferentially symmetrically distributed relative to the deflection segment.

11. An ultrasonic device, characterized in that, Includes an ultrasound system and an ultrasound catheter as described in any one of claims 1 to 10, wherein the ultrasound system is signal-connected to the ultrasound catheter, and the ultrasound probe is excited to collect image information or emit ablation energy in multiple directions of the spatial orientation.

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