Ultrasonic ablation system

Abstract

The utility model relates to the technical field of medical instruments, and provides an ultrasonic ablation system, which comprises an ultrasonic ablation assembly, a handle mechanism and a host, the ultrasonic ablation assembly comprises a carrier and at least two focused ultrasonic transducers, each focused ultrasonic transducer is arranged on the carrier, and each focused ultrasonic transducer has the same energy focus point; the handle mechanism is in driving connection with the carrier and used for driving the carrier to move in the axial direction or rotate in the circumferential direction so as to drive the focused ultrasonic transducers to move synchronously. The host is electrically connected with the focused ultrasonic transducers and used for controlling the focused ultrasonic transducers to work alternately. According to the utility model, a more accurate, safer and more efficient tissue ablation process can be realized, meanwhile, the system design is simplified, the surgical risk is reduced, and the comfort level and the recovery speed of a patient are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasonic ablation system. Background Technology

[0002] Currently, ultrasound ablation devices are mainly divided into two categories: 1) Circumferential ablation systems, including transducers and balloons. The transducer is placed inside a balloon with circulating cooling water. During 360° ablation, the transducer is cooled by the circulating water, which carries the risk of insufficient cooling and tissue damage. Furthermore, due to the presence of circulating cooling water, the balloon diameter is relatively large, leading to a longer postoperative wound recovery time and a risk of infection complications. 2) Planar transducer systems, which use three divergent planar transducers arranged at 120° on the catheter. Planar transducers may have certain directional limitations in ultrasound transmission and reception, resulting in poor ablation effects. Additionally, the electrode cables of the transducers have resistance, which can cause heat generation. Therefore, to reduce the resistance of the electrode cables, larger diameter and shorter length electrode cables are generally selected, resulting in shorter catheters and limited surgical options. Utility Model Content

[0003] This invention provides an ultrasonic ablation system that enables a more precise, safer, and more efficient tissue ablation process, while simplifying system design, reducing surgical risks, and improving patient comfort and recovery speed.

[0004] This utility model provides an ultrasonic ablation system, comprising:

[0005] An ultrasonic ablation assembly includes a carrier and at least two focused ultrasound transducers, each of which is disposed on the carrier and has the same energy focusing point.

[0006] The handle mechanism is connected to the carrier drive and is used to drive the carrier to move axially or rotate circumferentially, so as to drive each of the focused ultrasound transducers to move synchronously.

[0007] The main unit is electrically connected to each of the focused ultrasound transducers and is used to control the alternating operation of each of the focused ultrasound transducers.

[0008] According to the ultrasonic ablation system provided by this utility model, the carrier includes:

[0009] A torque tube, one end of which is drivenly connected to the handle mechanism;

[0010] The tip is connected to the other end of the torsion tube;

[0011] A sleeve is fitted inside the torsion tube;

[0012] A base is disposed inside the sleeve, and the base is provided with an arc-shaped mounting surface. Each of the focused ultrasound transducers is arranged at intervals around the arc-shaped mounting surface, and the energy focusing point of each of the focused ultrasound transducers coincides with the center of the arc-shaped mounting surface.

[0013] According to the present invention, an ultrasonic ablation system is provided in which an insulating and sound-permeable adhesive is provided inside the sleeve, and the insulating and sound-permeable adhesive covers the base and each of the focused ultrasonic transducers.

[0014] According to the ultrasonic ablation system provided by this utility model, each of the focused ultrasonic transducers installed on the base adopts a pulse modulation mode and operates alternately in sequence.

[0015] According to the ultrasonic ablation system provided by this utility model, the handle mechanism includes:

[0016] The housing has one end of the torque tube located inside the housing, and the other end of the torque tube and the sleeve located outside the housing.

[0017] Mounting base, which is axially movable within the housing;

[0018] A drive assembly is mounted on the mounting base and driven to one end of the torque tube, for driving the torque tube to rotate circumferentially.

[0019] According to the ultrasonic ablation system provided by this utility model, the handle mechanism further includes:

[0020] A locking element, provided on the housing, is used to lock or unlock the mounting base.

[0021] According to the ultrasonic ablation system provided by this utility model, the driving component includes:

[0022] A drive motor is mounted on the mounting base;

[0023] A drive gear is connected to the shaft of the drive motor;

[0024] The driven gear is connected to one end of the torque tube and meshes with the drive gear.

[0025] According to the present invention, an ultrasonic ablation system is provided, wherein a delivery pipe is axially connected to the outside of the housing, one end of the torsion tube passes through the delivery pipe and extends into the housing, and the other end of the torsion tube and the sleeve are disposed outside the delivery pipe.

[0026] According to the ultrasonic ablation system provided by this utility model, each of the focused ultrasonic transducers is provided with an electrode cable, which is inserted into the torsion tube and passes through one end of the torsion tube to exit the housing and connect to the main unit.

[0027] According to the ultrasonic ablation system provided by this utility model, the electrode cable is connected to the main unit via a slip ring.

[0028] The ultrasonic ablation system provided by this invention utilizes focused ultrasound transducers to focus low-energy signals at the transducer onto the tissue, creating biological effects such as high temperature, cavitation, and mechanical action to achieve ablation. By employing the principle of focused energy, multiple ultrasound energy beams converge at a single high-energy focal point at the tissue to be ablated. This ensures effective ablation while allowing each transducer to be matched with smaller diameter and longer electrode cables, significantly reducing the outer diameter of the carrier's torsion tube and increasing its length, thus accommodating larger surgical operating spaces. A handle mechanism drives the focused ultrasound transducers on the carrier to move axially to different positions within the tissue, and then drives them to rotate circumferentially, achieving 360° circumferential ablation at different locations. The main unit controls multiple tiny focused ultrasound transducers in a pulsed, alternating operation mode, reducing the working time of individual transducers and preventing excessive heat generation that could damage the tissue during prolonged operation. This eliminates the need for existing cooling circulating water, reducing the carrier size, resulting in smaller surgical wounds and facilitating postoperative recovery. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the ultrasonic ablation system provided by this utility model;

[0031] Figure 2 This is a schematic cross-sectional view of the ultrasonic ablation component provided by this utility model;

[0032] Figure 3 This is a schematic diagram illustrating the working principle of the focused ultrasonic transducer provided by this utility model;

[0033] Figure 4 This is one of the schematic diagrams illustrating the principle of the effect of a focused ultrasound transducer rotating at a certain angle on tissue, provided by this utility model.

[0034] Figure 5This is the second schematic diagram illustrating the principle of how a focused ultrasound transducer rotates at another angle to act on tissue, provided by this utility model.

[0035] Figure 6 This is a schematic diagram of the handle mechanism provided by this utility model;

[0036] Figure 7 This is a schematic diagram of the ultrasonic pulse of the first focused ultrasonic transducer provided by this utility model;

[0037] Figure 8 This is a schematic diagram of the ultrasonic pulse of the second focused ultrasonic transducer provided by this utility model;

[0038] Figure 9 This is a schematic diagram of the ultrasonic pulses of the two focused ultrasonic transducers provided by this utility model.

[0039] Figure label:

[0040] 100. Ultrasonic ablation components;

[0041] 101. Carrier; 102. Focused ultrasound transducer; 103. Energy focusing point;

[0042] 104. Torque tube; 105. Sleeve; 106. Base; 107. Mounting arc surface;

[0043] 108. Insulating and sound-permeable adhesive; 109. Sharp point; 110. Electrode cable;

[0044] 200. Handle mechanism;

[0045] 201. Housing; 202. Mounting base; 203. Drive assembly; 204. Locking component;

[0046] 205. Drive motor; 206. Drive gear; 207. Driven gear; 208. Conveying pipe;

[0047] 300, Host; 400, Organization. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0049] In the description of the embodiments of this utility model, it should be noted that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0050] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] According to one embodiment of the present invention, referring to Figures 1-9 As shown, the ultrasonic ablation system provided by this utility model mainly includes: an ultrasonic ablation component 100, a handle mechanism 200, and a main unit 300. The ultrasonic ablation component 100 includes a carrier 101 and at least two focused ultrasonic transducers 102, each focused ultrasonic transducer 102 being mounted on the carrier 101 and having the same energy focusing point 103. The handle mechanism 200 is drivenly connected to the carrier 101 and is used to drive the carrier 101 to move axially or rotate circumferentially, thereby causing the focused ultrasonic transducers 102 to move synchronously. The main unit 300 is electrically connected to each focused ultrasonic transducer 102 and is used to control the alternating operation of each focused ultrasonic transducer 102.

[0053] In this embodiment of the present invention, the ultrasonic ablation assembly 100 includes a carrier 101 and at least two focused ultrasound transducers 102 mounted on the carrier 101, with their energy focused at a single point. The focused ultrasound technology of this invention utilizes the ability of ultrasound waves to focus at a specific point, resulting in a high energy density at that point. This design allows energy to be delivered more concentratedly to the target tissue, thereby generating sufficient heat to ablate the target tissue, thus improving ablation efficiency and reducing the impact on surrounding healthy tissue. This method not only improves treatment precision but also, due to the highly concentrated energy, allows the use of thinner cables and smaller devices, reducing surgical trauma and accelerating postoperative recovery.

[0054] The handle mechanism 200 is driven to connect with the carrier 101, enabling the carrier 101 to move axially or rotate around its axis. This mechanism allows the transducer to reach different treatment areas and perform 360° ablation at different locations. Through the axial movement and rotation of the handle mechanism 200, uniform ablation of the entire target area can be achieved, ensuring that all areas requiring treatment are effectively treated.

[0055] The main unit 300 is electrically connected to all transducers and is responsible for controlling the alternating pulsed operation of the transducers. By controlling multiple transducers to operate in turn via the main unit 300, the operating time of each transducer is limited, with each operation lasting only a short time. This helps prevent any single transducer from overheating, reducing the risk of tissue damage 400 due to overheating, and eliminates the need for a traditional cooling water system. This design simplifies the equipment and reduces potential complications.

[0056] Therefore, the ultrasonic ablation system provided in this embodiment of the present invention, by adopting focused ultrasound technology and alternating working mode, achieves a more precise, safer, and more efficient tissue ablation process, while simplifying equipment design, reducing surgical risks, and improving patient comfort and recovery speed.

[0057] According to one embodiment of the present invention, referring to Figures 1-3 As shown, the carrier 101 includes: a torque tube 104, a tip 109, a sleeve 105, and a base 106. One end of the torque tube 104 is drivenly connected to the handle mechanism 200; the tip 109 is connected to the other end of the torque tube 104; the sleeve 105 is sleeved inside the torque tube 104; the base 106 is disposed inside the sleeve 105, and the base 106 is provided with a mounting arc surface 107. Each focused ultrasound transducer 102 is arranged in a ring around the mounting arc surface 107 at intervals, and the energy focusing point 103 of each focused ultrasound transducer 102 coincides with the center of the mounting arc surface 107.

[0058] In this embodiment of the utility model, when the handle mechanism 200 drives the torque tube 104 to move axially or rotate circumferentially, it can drive the transducer on the base 106 inside the sleeve 105 inside the torque tube 104 to operate synchronously.

[0059] Torque tube 104 is a crucial component connecting the handle mechanism 200 and the transducer. It not only provides a mechanical connection but also transmits torque. The design of torque tube 104 is critical to ensuring the accuracy of the transducer during rotation. When the handle mechanism 200 drives torque tube 104 to rotate, it precisely transmits this rotation to the transducers mounted on it, ensuring that each transducer rotates accurately at a predetermined angle, thereby achieving 360° circumferential ablation.

[0060] The torsion tube 104 can be a nickel-titanium tube or a multi-layered helical stainless steel spring; the inner diameter of the torsion tube 104 can be one of 0.6mm, 0.7mm, or 0.8mm, while its outer diameter can be 0.8mm, 0.9mm, or 1.0mm respectively. That is, when the inner diameter is 0.6mm, the outer diameter is 0.8mm; when the inner diameter is 0.7mm, the outer diameter is 0.9mm; and when the inner diameter is 0.8mm, the outer diameter is 1.0mm.

[0061] The function of the tip 109 is to guide the torque tube 104 to smoothly reach the lumen of the lesion. The tip 109 can be connected to the torque tube 104 by welding or bonding.

[0062] The sleeve 105 can be connected to the torsion tube 104 by welding or bonding. The sleeve 105 can protect the base 106 and the focused ultrasound transducer 102. The combined use of the sleeve 105 and the torsion tube 104 increases the overall stability of the system, enabling consistent performance even in complex surgical environments.

[0063] The base 106 is located within the sleeve 105 and has a mounting arc surface 107. Focused ultrasonic transducers 102 are mounted on this arc surface, with the emitting surfaces of each transducer 102 facing the center of the mounting arc surface 107. This design allows the transducers to be arranged around a common center point (i.e., the energy focusing point 103). Since the energy focusing point 103 of each transducer coincides with the center of the mounting arc surface 107, all ultrasonic energy is concentrated at a single point, enhancing the focusing effect and thus improving ablation efficiency and accuracy.

[0064] Therefore, this design of the present invention improves the overall performance of the ultrasonic ablation system by optimizing the structural layout and transmission mechanism, especially in improving the ablation effect and surgical precision.

[0065] According to one embodiment of the present invention, referring to Figure 2 As shown, the sleeve 105 is provided with insulating and sound-permeable adhesive 108, and the insulating and sound-permeable adhesive 108 covers the base 106 and each focused ultrasonic transducer 102.

[0066] In this embodiment of the present invention, the insulating acoustic adhesive 108 can be a flexible insulating acoustic adhesive, filled inside the sleeve 105, used to fix and seal the base 106 and each focused ultrasound transducer 102 inside the sleeve 105. This fixing method ensures that the transducers will not shift due to external forces during the operation, thereby maintaining the accurate consistency of the focal point, so that each ablation achieves the expected effect. The sealing helps prevent external liquids or other substances from entering the device, reducing the risk of infection and other potential mechanical failures.

[0067] The insulating and sound-permeable adhesive 108 has non-conductive properties, which are crucial for ensuring equipment safety. This is especially important in medical environments where preventing current leakage is essential to avoid harm to patients and operators. Furthermore, electrical insulation helps improve system reliability and reduces malfunctions caused by electrical short circuits and other problems.

[0068] Furthermore, the insulating and sound-permeable adhesive 108 is not only insulating but also sound-permeable. This means it allows ultrasound waves to pass through smoothly without significantly attenuating their energy. This is crucial for ensuring that the ultrasound waves generated by the focused ultrasound transducer 102 can be effectively delivered to the target tissue and achieve an ablation effect.

[0069] According to one embodiment of the present invention, each focused ultrasonic transducer 102 installed on the base 106 adopts a pulse modulation mode and operates alternately in sequence.

[0070] For example, refer to Figures 7-9 The diagram illustrates the ultrasonic pulse modulation working mode when there are two focused ultrasound transducers 102. The horizontal axis represents the working time, and the vertical axis represents the working voltage. The first focused ultrasound transducer 102 is controlled to work for a certain period of time and then turn off. Then the second focused ultrasound transducer 102 is controlled to work for a certain period of time and then turn off. Then the first focused ultrasound transducer 102 is turned on again and then turned off after working for a certain period of time. This cycle repeats until the ablation is completed.

[0071] When there are n focused ultrasound transducers 102, and each focused ultrasound transducer 102 operates for a seconds, the host 300 starts the first focused ultrasound transducer 102, operates for a seconds and then shuts it off. Then it starts the second focused ultrasound transducer 102, operates for a seconds and then shuts it off, and so on, until the nth focused ultrasound transducer 102, and then it cycles back to the first focused ultrasound transducer 102 until the ablation work is completed.

[0072] This embodiment of the invention controls each focused ultrasound transducer 102 to operate in a pulse modulation mode, alternating sequentially. The working time of each transducer is limited, with each session lasting a short time. This helps prevent any single transducer from overheating, reducing the risk of tissue damage due to overheating, and eliminates the need for a traditional cooling water system. This design simplifies the equipment and reduces potential complications.

[0073] According to one embodiment of the present invention, referring to Figure 1 and Figure 6 As shown, the handle mechanism 200 includes: a housing 201, a mounting base 202, and a drive assembly 203. One end of the torque tube 104 is located inside the housing 201, and the other end of the torque tube 104 and the sleeve 105 are located outside the housing 201. The mounting base 202 is axially movable within the housing 201. The drive assembly 203 is mounted on the mounting base 202 and is drivenly connected to one end of the torque tube 104 to drive the torque tube 104 to rotate circumferentially.

[0074] In this embodiment of the present invention, the housing 201 is the main body of the handle mechanism 200, which houses the mounting base 202 and the drive assembly 203. The housing 201 is designed to conform to ergonomic principles so that doctors can comfortably hold and operate the handle mechanism 200.

[0075] Mounting base 202 is located inside housing 201 and can move axially. For example, mounting base 202 is connected to a drive handle, which is located outside housing 201, and the mounting base 202 can be moved by the drive handle. Alternatively, housing 201 may also have electric push rods, cylinders, or other driving devices inside, which drive the mounting base 202 to move axially.

[0076] This design allows the mounting base 202 to drive the drive assembly 203 and the connected torque tube 104 to move synchronously along the axial direction. This means that doctors can use the handle mechanism 200 to precisely move the tip 109 and the focused ultrasound transducer 102 to different tissues 400 that need to be ablated.

[0077] For example, the housing 201 is provided with a sliding groove, and the mounting base 202 is provided with a sliding protrusion. The sliding protrusion is slidably connected to the sliding groove, thereby realizing the axial movement of the mounting base 202.

[0078] For example, the housing 201 is provided with a slide rail, and the mounting base 202 is provided with a sliding sleeve. The sliding sleeve is slidably connected to the slide rail, thereby realizing the axial movement of the mounting base 202.

[0079] The drive assembly 203 is mounted on the mounting base 202 and is driven to one end of the torque tube 104. Its main function is to drive the torque tube 104 to rotate circumferentially, thereby realizing the rotation of the focused ultrasound transducer 102 and thus completing 360° circumferential ablation. This design ensures comprehensive coverage of the ablation process and improves the treatment effect.

[0080] like Figures 3-5 As shown, when the number of focused ultrasound transducers 102 is n (n≥2), the working time of each transducer is a seconds, the energy focusing point 103 of all transducers is in the same position, the effective diameter of the energy focusing point 103 is x, and the radius distance of the energy focusing point 103 (i.e. the distance from the center of the energy focusing point 103 to the mounting arc surface 107 of the base 106) is L. Then the host 300 starts the first transducer and then shuts it off after a seconds, then starts the second transducer and then shuts it off after a seconds, and so on, until the nth transducer.

[0081] The rotation angle α of the drive component 203 after every a seconds is 180×(x / πL), and after πL / x times (rounded up), a tissue segment 400 can be ablated 360° in a circumferential direction.

[0082] According to one embodiment of the present invention, referring to Figure 1 and Figure 6 As shown, the handle mechanism 200 also includes a locking member 204, which is disposed on the housing 201 and is used to lock or unlock the mounting base 202.

[0083] Specifically, when the locking member 204 locks the mounting base 202, the mounting base 202 is fixed in place, thereby confining the drive assembly 203 within the housing 201 so that the focused ultrasonic transducer 102 located at the distal end of the rotatable torque tube 104 remains in the ablation position and performs continuous ablation.

[0084] When the locking element 204 unlocks the mounting base 202, the mounting base 202 can move axially, thereby adjusting the ablation position of the focused ultrasonic transducer 102.

[0085] For example, the locking element 204 can be provided on the top of the housing 201. The locking element 204 can be a knob. By turning the knob, it can be moved up and down, thereby abutting against the top surface of the mounting base 202 or separating from the top surface of the mounting base 202, thereby realizing the locking or unlocking of the mounting base 202.

[0086] The locking element 204 can also be a positioning pin. The top surface of the mounting base 202 is provided with multiple positioning holes arranged at intervals along the axial direction. When it is necessary to adjust the position of the mounting base 202, the positioning pin can be pulled out to unlock it. Then, the mounting base 202 can be moved. After it is moved into place, the positioning pin can be inserted into the positioning hole of the mounting base 202 to achieve positioning and locking.

[0087] According to one embodiment of the present invention, referring to Figure 6 As shown, the drive assembly 203 includes a drive motor 205, a drive gear 206, and a driven gear 207. The drive motor 205 is mounted on the mounting base 202. The drive gear 206 is connected to the shaft of the drive motor 205. The driven gear 207 is connected to one end of the torque tube 104, and the driven gear 207 is meshed with the drive gear 206.

[0088] Specifically, when the drive motor 205 rotates, it can drive the driven gear 207 to rotate via the drive gear 206, thereby driving the torque tube 104 to rotate. Furthermore, the diameter of the drive gear 206 is larger than the diameter of the driven gear 207, so that the rotation of the torque tube 104 is achieved through gear meshing.

[0089] According to one embodiment of the present invention, referring to Figure 1 and Figure 6 As shown, a conveying pipe 208 is axially connected to the outside of the housing 201. One end of the torque pipe 104 passes through the conveying pipe 208 and extends into the housing 201. The other end of the torque pipe 104 and the sleeve 105 are located outside the conveying pipe 208.

[0090] In this embodiment of the present invention, the main function of the delivery tube 208 is to serve as a guide channel for the torque tube 104, ensuring that the torque tube 104 can move smoothly along the axial direction during the operation. The design of the delivery tube 208 allows the torque tube 104 to accurately pass through the tissue 400 to reach the target position while maintaining its straightness and stability.

[0091] The delivery tube 208 can be composed of one or more of the following: braided tube, PI (polyimide) tube, Nylon tube, or PEX (cross-linked polyethylene) tube to form an ultra-thin tube body. The tube diameter can be one of 1.0 mm, 1.1 mm, or 1.2 mm, and the tube surface is coated with a hydrophilic coating.

[0092] One end of the torque tube 104 passes through the delivery tube 208 and extends into the housing 201, where it connects to a drive assembly (such as the driven gear 207) inside the housing 201. This connection ensures that the torque tube 104 can receive the driving force from the handle mechanism 200 and convert it into the desired rotational or locating action.

[0093] The other end of the torsion tube 104 and the sleeve 105 are located outside the delivery tube 208 so that the external focused ultrasound transducer 102 can perform ablation on the tissue 400.

[0094] According to one embodiment of the present invention, referring to Figure 1 and Figure 6As shown, each focused ultrasound transducer 102 has an electrode cable 110 on its positive and negative poles. The electrode cable 110 passes through a torsion tube 104 and exits through one end of the torsion tube 104 to the housing 201 and connect to the main unit 300, thereby realizing signal transmission.

[0095] The electrode cable 110 is longer than 1.4 meters and has a diameter of 0.07 mm, 0.1 mm, 0.12 mm, or 0.15 mm.

[0096] According to one embodiment of the present invention, the electrode cables 110 of each focused ultrasonic transducer 102 are connected to the host 300 via slip rings.

[0097] Specifically, a slip ring is an electromechanical device mainly used to transmit power and signals between rotating and stationary components. In this embodiment of the invention, the slip ring converts the rotational motion of the electrode cable 110 into a static connection, thereby ensuring that the electrode cable 110 remains stably connected to the host 300 while the focused ultrasonic transducer 102 rotates. This avoids connection interruptions caused by cable entanglement, thereby improving the reliability and stability of the system.

[0098] The working principle of the ultrasonic ablation system of this invention is described below using two focused ultrasonic transducers 102 as an example, which roughly includes:

[0099] like Figure 4 and Figure 5 As shown, there are two focused ultrasound transducers 102, each with a working time of 7 seconds. The energy focusing points 103 of the two transducers are at the same position, with an effective diameter of 2 mm and a radius distance of 5 mm.

[0100] Move the mounting base 202 to move the focused ultrasound transducer 102 to the target location of the tissue 400. The main unit 300 starts the first focused ultrasound transducer 102 and operates for 7 seconds, then shuts it off. The drive motor 205 rotates 22.9° clockwise or counterclockwise, then starts the second focused ultrasound transducer 102 and operates for 7 seconds, then shuts it off. The drive motor 205 continues to rotate 22.9° clockwise or counterclockwise, then starts the first focused ultrasound transducer 102 and operates for 7 seconds, then shuts it off. This process continues until the 360° circumferential ablation of the target location is completed. Then move the mounting base 202 to move the focused ultrasound transducer 102 to the next target location of the tissue 400. Repeat the above steps until the ablation of the tissue 400 is completed.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An ultrasonic ablation system, characterized in that, include: An ultrasonic ablation assembly includes a carrier and at least two focused ultrasound transducers, each of which is disposed on the carrier and has the same energy focusing point. The handle mechanism is connected to the carrier drive and is used to drive the carrier to move axially or rotate circumferentially, so as to drive each of the focused ultrasound transducers to move synchronously. The main unit is electrically connected to each of the focused ultrasound transducers and is used to control the alternating operation of each of the focused ultrasound transducers.

2. The ultrasonic ablation system according to claim 1, characterized in that, The carrier includes: A torque tube, one end of which is drivenly connected to the handle mechanism; The tip is connected to the other end of the torsion tube; A sleeve is fitted inside the torque tube; A base is disposed inside the sleeve, and the base is provided with an arc-shaped mounting surface. Each of the focused ultrasound transducers is arranged at intervals around the arc-shaped mounting surface, and the energy focusing point of each of the focused ultrasound transducers coincides with the center of the arc-shaped mounting surface.

3. The ultrasonic ablation system according to claim 2, characterized in that, The sleeve is provided with insulating and sound-permeable adhesive, and the insulating and sound-permeable adhesive covers the base and each of the focused ultrasonic transducers.

4. The ultrasonic ablation system according to claim 2, characterized in that, The focused ultrasonic transducers mounted on the base operate in pulse modulation mode and alternate sequentially.

5. The ultrasonic ablation system according to any one of claims 2-4, characterized in that, The handle mechanism includes: The housing has one end of the torque tube located inside the housing, and the other end of the torque tube and the sleeve located outside the housing. Mounting base, which is axially movable within the housing; A drive assembly is mounted on the mounting base and driven to one end of the torque tube, for driving the torque tube to rotate circumferentially.

6. The ultrasonic ablation system according to claim 5, characterized in that, The handle mechanism further includes: A locking element, provided on the housing, is used to lock or unlock the mounting base.

7. The ultrasonic ablation system according to claim 5, characterized in that, The driving component includes: A drive motor is mounted on the mounting base; A drive gear is connected to the shaft of the drive motor; The driven gear is connected to one end of the torque tube and meshes with the drive gear.

8. The ultrasonic ablation system according to claim 5, characterized in that, The outer side of the housing is axially connected to a conveying pipe. One end of the torque tube passes through the conveying pipe and extends into the housing. The other end of the torque tube and the sleeve are located outside the conveying pipe.

9. The ultrasonic ablation system according to claim 5, characterized in that, Each of the focused ultrasound transducers is equipped with an electrode cable, which passes through the torsion tube and exits through one end of the torsion tube to connect to the main unit.

10. The ultrasonic ablation system according to claim 9, characterized in that, The electrode cable is connected to the host via a slip ring.

Images