Ultrasonic ablation catheter for intravascular imaging and treatment and treatment system

Abstract

The invention provides an ultrasonic ablation catheter for intravascular imaging and treatment and a treatment system comprising the same. The interior of the ultrasonic ablation catheter is divided into two cavities, namely a diagnosis cavity and a guide wire cavity; an ultrasonic imaging assembly is pre-embedded in the diagnosis cavity, the ultrasonic imaging assembly further comprises a traction device, and an ultrasonic ablation assembly is wound around the exterior of the guide wire cavity; the ultrasonic treatment system further comprises an imaging display, an energy generator and a connecting device. The ultrasonic ablation catheter can complete ultrasonic imaging and ultrasonic ablation at the same time under the condition that the catheter only enters the human body once, and harm to the human body is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an ultrasonic ablation catheter and a treatment system for intravascular imaging and treatment. Background Art

[0002] As ultrasound ablation surgery continues to expand in clinical application areas and scenarios, the design and manufacture of ultrasound ablation catheters face increasing challenges in meeting the needs of different scenarios.

[0003] Intravascular ultrasound imaging utilizes the differences in the physical properties of ultrasound in biological tissues. A catheter with an ultrasound probe at its tip is inserted directly into a blood vessel. The ultrasound probe transmits ultrasound waves toward the vessel wall tissue, which absorbs and reflects the signals. Vascular lesions are then determined based on the characteristics of the signals received by the ultrasound probe. Compared to angiography, intravascular ultrasound imaging can more accurately and effectively detect tissue lesions. It can assist in the diagnosis of ambiguous lesions that cannot be identified by angiography, identify plaque components such as calcification and thrombus, identify the vessel wall structure, and determine the true and false lumen locations of the device.

[0004] At present, most ultrasonic ablation transducers use high-damping and high-attenuation materials to control the unidirectional energy propagation of ultrasonic ablation transducers. The transmitted ultrasonic energy is partially converted into heat energy, resulting in energy loss. This not only reduces the electroacoustic conversion efficiency of the ultrasonic ablation transducer, but the heat generated by the conversion can also cause adverse consequences in human tissue. For example, in blood vessels, the overheated transducer surface may cause damage to the vascular endothelium in the treatment area, which will lead to long-term vascular stenosis or even occlusion in the treated subject.

[0005] In addition, at present, most clinical surgeries first use interventional ultrasound imaging detection devices to detect the location of the patient's lesions, and then use the feedback images to determine the location and method of treatment; for example, after detection and imaging, interventional treatment products are added to the disease or surgical operations are performed; this method is not only expensive, but also equivalent to repeating clinical operations more than twice, increasing the time and cost of the operation; therefore, how to combine ultrasound detection imaging technology with interventional treatment so that it can detect the location of the lesion and perform treatment at the same time, thereby simplifying the surgical process and improving the treatment effect, is currently an urgent technical issue in the industry.

[0006] Based on this, there is a need for an ultrasonic ablation catheter and treatment system for intravascular imaging and treatment, in which the ultrasonic imaging component is pre-buried in the ultrasonic ablation catheter to provide an ultrasonic ablation catheter and a treatment system containing the same that combine ultrasonic imaging and ablation functions to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide an ultrasonic ablation catheter and treatment system for intravascular imaging and treatment, which uses an integrated ultrasonic treatment system to reduce harm to the human body.

[0008] The purpose of the present invention is achieved by the following technical solutions:

[0009] In a first aspect, the present invention provides an ultrasonic ablation catheter for intravascular imaging and treatment, comprising:

[0010] a catheter body, wherein the interior of the catheter body is divided into a guidewire cavity and a diagnostic cavity, and a guidewire is passed through the guidewire cavity;

[0011] At least two ultrasonic ablation components are provided in the diagnostic cavity, and the at least two ultrasonic ablation components are arranged axially along the guidewire cavity and circumferentially around the outside of the guidewire cavity;

[0012] An ultrasonic imaging component is pre-buried in the diagnostic cavity; the ultrasonic imaging component includes an ultrasonic imaging transducer and a traction device, the traction device is connected to the ultrasonic imaging transducer via a wire, and is used to pull the ultrasonic imaging transducer toward the proximal end.

[0013] Furthermore, the traction device includes a gear and a turntable, which drives the turntable to rotate at a constant speed through the engagement of the gears, and then pulls the distal ultrasonic imaging transducer toward the proximal end at a constant speed through the connection between the turntable and the wire.

[0014] Preferably, the traction device rotates the ultrasonic imaging component while pulling it, and the ultrasonic imaging transducer emits ultrasonic detection waves in all directions, thereby transmitting the signals to the imaging display.

[0015] Furthermore, each of the ultrasonic ablation components includes at least two ultrasonic ablation transducers, and the ultrasonic ablation transducers are connected by wires.

[0016] Preferably, the ultrasonic ablation transducers are evenly laid out 360 degrees around the center of the guidewire cavity.

[0017] Furthermore, the ultrasonic ablation transducers are independent of each other, and the intensity and propagation direction of a single ultrasonic wave are controlled by controlling each independent ultrasonic ablation transducer.

[0018] Preferably, the ultrasonic ablation transducer is a piezoelectric ceramic, and the ultrasonic ablation component is composed of multiple pieces of piezoelectric ceramics spliced together.

[0019] Furthermore, the ultrasonic ablation catheter also includes a developing component.

[0020] In a second aspect, the present invention provides an ultrasound treatment system, comprising:

[0021] The above-mentioned ultrasound ablation catheter for intravascular imaging and treatment;

[0022] an energy generator, the energy generator being connected to the ultrasonic ablation component and the ultrasonic imaging component via a wire;

[0023] An imaging display is connected to the ultrasound imaging assembly via a wire.

[0024] Preferably, the connecting device includes a guide wire interface, an imaging wire interface, an ablation wire interface and a liquid supply interface; the imaging wire interface is connected to the traction device, the ablation wire interface is connected to the energy generator, and a wire connected to the ultrasonic ablation component is passed through the ablation wire interface.

[0025] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:

[0026] First, the present invention combines ultrasonic detection imaging technology with interventional treatment, so that it can perform treatment while detecting the location of the lesion; compared with the original clinical surgery, which first uses an interventional ultrasonic imaging detection device to detect the patient's lesion location, and then repeatedly performs interventional treatment on the patient based on the detected image; the ultrasonic ablation catheter of the present invention can directly perform ablation treatment on the lesion location after the detection is completed, without the need to repeat the interventional surgery process more than twice, thereby simplifying the operation time, reducing the risk of surgery, and improving the treatment effect.

[0027] Second, the present invention utilizes ultrasonic energy for ablation surgery. Compared to other surgical methods, ultrasonic ablation uses lower energy, and energy transfer does not rely on tissue conduction, thus avoiding damage to the vascular endothelium during treatment. Multiple ultrasonic converters are fixed to the center of the ultrasonic ablation catheter, converting other energies such as electrical or mechanical energy into ultrasonic energy via the converters. This energy is then precisely transferred to the lesion locations in different distribution segments for ablation. Simultaneously, multiple ultrasonic generators generate low-intensity ultrasonic waves at the lesion locations, superimposing the energy to achieve ablation. The low intensity of a single ultrasonic wave does not damage the blood vessels, and the system generates very little heat, reducing damage to the endothelium.

[0028] Third, the present invention uses multiple ultrasonic ablation transducers for ultrasonic treatment, and each ultrasonic transducer is independent of each other. The energy of the ultrasonic wave can be controlled by controlling a separate ultrasonic ablation transducer; at the same time, multiple ultrasonic generators can also generate low-intensity ultrasonic waves to the lesion location for energy superposition to perform ablation. In this way, the intensity of a single ultrasonic wave can be controlled, so that the ultrasonic energy does not damage the blood vessels and generates lower heat release, thereby reducing damage to the vascular endothelium.

[0029] Fourth, the ultrasonic ablation transducer of the present invention is assembled from multiple pieces of piezoelectric ceramics, and the piezoelectric ceramics are wrapped 360 degrees around the outside of the guidewire cavity; and each piece of piezoelectric ceramics can work independently, so that the direction of the ultrasonic wave can be changed by controlling the piezoelectric ceramics in different positions, thereby realizing multi-directional and multi-angle treatment of the ultrasonic ablation transducer, and realizing treatment with different ultrasonic energies in different areas.

[0030] Fifth, the ultrasonic imaging assembly of the present invention includes a traction device, which can perform ultrasonic imaging at multiple positions and make the imaging more accurate at the same time; during the retraction process, the ultrasonic imaging assembly can also rotate at a uniform speed in the diagnostic cavity to emit ultrasonic detection waves in all directions, and the ultrasonic waves contact the lesion position and bounce back to the ultrasonic imaging assembly, and then bring the signal back and transmit it to the imaging display connected to the connecting device, and finally obtain detailed image information of the diseased tissue.

[0031] Sixth, the traction device of the present invention can rotate, thereby driving the ultrasonic imaging component to rotate, and at the same time the ultrasonic ablation transducer emits ultrasonic detection waves to the surroundings, and then transmits the signal to the imaging display; the rotation of the traction device makes the imaging quality of the ultrasonic imaging component higher, the detection more accurate, and the location of the lesion can be better determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 Schematic diagram of the structure of an ultrasonic ablation catheter according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the assembly of piezoelectric ceramics in an ultrasonic ablation catheter according to an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the structure of an ultrasound therapy system according to an embodiment of the present invention.

[0036] Description of Reference Numerals

[0037] 1. Catheter body; 2. Ultrasonic imaging component; 21. Ultrasonic imaging transducer; 22. Traction device; 3. Ultrasonic ablation component; 31. Piezoelectric ceramics; 32. Wire; 4. Development component; 5. Connecting device; 6. Energy generator. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present invention, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement the device and / or practice the method.

[0041] It should also be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. The illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0042] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0043] At the same time, in this specification, descriptions involving orientations, such as up, down, left, right, front, back, inside, outside, longitudinal, lateral, vertical, horizontal, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] Furthermore, it should be noted that, in the description of this specification, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances, and they should not be construed as limitations on the present invention.

[0045] In the existing technology, in order to achieve ultrasound treatment for patients, ultrasound imaging equipment is usually used for detection first, and then ultrasound ablation equipment is used to determine the location of the lesion through ultrasound imaging. However, using ultrasound imaging equipment and ultrasound ablation equipment at the same time requires entering the human body multiple times, which will increase the damage to the human body and the surgical process is also cumbersome. Under this premise, how to use only a single ultrasound treatment device so that the device only needs to enter the human body once to complete the entire treatment process has become an urgent problem to be solved in the industry.

[0046] Based on this, the embodiments of this specification propose an ultrasound treatment device solution: this solution uses only one device that combines ultrasound imaging and ultrasound ablation to provide ultrasound treatment and reduce the damage caused by the device entering the human body.

[0047] In order to realize the combination of ultrasonic detection imaging technology and interventional treatment, perform ultrasonic treatment while accurately detecting the location of the lesion, improve the working efficiency of the ultrasonic ablation transducer, reduce heat generation and improve the safety of ultrasonic ablation treatment, this technical solution provides a new type of ablation catheter that performs ultrasonic detection imaging and treatment in the blood vessel at the same time; the ablation catheter proposed this time, its main body includes a catheter body, an ultrasonic imaging component 2 and an ultrasonic ablation component 3.

[0048] The other main body of the ablation catheter is the ultrasonic ablation component 3, which is composed of multiple arc-shaped or long strip ultrasonic ablation transducers, an ablation wire 32 and a proximal connection device 5; the ultrasonic ablation transducers are evenly laid 360 degrees around the center of the guidewire cavity of the special-shaped inner cavity flexible tube, and the whole is covered with flexible material, that is, they are pre-buried inside the flexible tube, mainly to avoid contact between the ultrasonic ablation transducer and the blood vessel wall to prevent damage to the blood vessel wall; these 360-degree surrounding multiple arc-shaped or long strip ultrasonic ablation transducers play a therapeutic role, and the doctor can use the tissue image of the disease detected in the early stage to treat the disease. For example, if the tissue hyperplasia in the middle section of the lesion is more serious, the energy output of the middle section can be increased during ultrasound treatment. Therefore, multiple arc-shaped or long strip ultrasonic ablation transducers are laid 360 degrees around the guidewire cavity to achieve different ultrasonic energy treatments in different sections. At the same time, multiple ultrasonic ablation transducers can also generate low-intensity ultrasonic waves to the lesion location for energy superposition to perform ablation. In this way, the intensity of a single ultrasonic wave can be controlled, so that the ultrasonic energy does not damage the blood vessels and produces lower heat release, thereby reducing damage to the vascular endothelium.

[0049] In order to specifically explain the present invention Figure 1The figure shows a schematic diagram of the structure of an ultrasonic ablation catheter according to the first embodiment of the present invention, wherein the ultrasonic ablation catheter comprises a catheter body 1, an ultrasonic imaging component 2 and an ultrasonic ablation component 3, wherein a diagnostic cavity and a guidewire cavity are provided in the catheter body 1; the ultrasonic imaging component 2 comprises an ultrasonic imaging transducer 21 and a traction device 22, wherein the ultrasonic imaging component 2 is pre-buried in the diagnostic cavity, and after the catheter body 1 is inserted into the human body, the ultrasonic imaging transducer 21 is pulled out proximally by the traction device 22; the traction device 2 rotates the ultrasonic imaging component 2 while pulling it, and the ultrasonic ablation transducer emits ultrasonic detection waves to the surroundings, thereby transmitting the signal to an external imaging device; it should be understood that the structure of the traction device 22 for realizing the rotation of the ultrasonic imaging component 2 here can be any structure that can realize rotation in the prior art, such as a rotating shaft, a slip ring, etc.; during the retraction process, the ultrasonic imaging component 2 rotates at a uniform speed in the diagnostic cavity and emits ultrasonic detection waves to the surroundings Ultrasonic detection waves, the ultrasonic waves contact the lesion position and rebound to the ultrasonic imaging transducer 21 of the ultrasonic imaging component 2, and then bring the signal back and transmit it to the external device; it should be understood that the traction device 22 is used to withdraw to the proximal end is only a preferred embodiment. In other embodiments, the traction device 22 can also be used to advance to the distal end; by pre-buried in the catheter body 1 The ultrasonic imaging component 2 ultimately achieves the imaging effect that can only be achieved by an independent ultrasonic imaging device. Compared with an independent ultrasonic imaging device, the number of times the external device enters the human body is reduced, thereby reducing the damage to the human body during the treatment process; in addition, in order to realize the position monitoring of the ultrasonic ablation catheter, a developing part 4 is also provided inside the catheter body 1. Preferably, the developing part 4 is annular and is arranged on the outside of the guidewire cavity; more preferably, the developing ring 4 is composed of platinum-iridium alloy; this platinum-iridium alloy has the characteristic of not being projected by X-rays, and is installed inside the ultrasonic ablation catheter to play a positioning role.

[0050] Specifically, the ultrasonic ablation component 3 is an ultrasonic ablation transducer and an ablation wire 32. The ultrasonic ablation transducer is wound around the outside of the guidewire cavity, and the ultrasonic ablation transducers are arranged in multiples at a specific distance along the axial direction of the guidewire cavity, and each ultrasonic ablation transducer is independent of each other; it should be understood that "a specific distance apart" in this embodiment is only a preference. In actual use, the present invention can reasonably arrange the ultrasonic ablation transducers according to needs, that is, the ultrasonic ablation transducers can be separated by a specific distance or an unspecified distance; preferably, in this embodiment, the ablation wire 32 is generally composed of a metal with strong conductivity such as copper, aluminum or silver, and a polymer high-voltage resistant material attached to the surface, which provides electrical energy for the ultrasonic ablation transducer or serves as A path for transmitting weak electrical signals; since the guidewire cavity is formed by the internal pipeline in the catheter body 1, preferably, the guidewire cavity is located on the central axis of the catheter body 1, and the ultrasonic ablation transducer is wound around the central axis of the catheter body 1; it can be understood that multiple ultrasonic ablation transducers wound around the axial direction of the guidewire cavity are connected by the ablation wire 32, and each ultrasonic ablation transducer can be independently controlled; low-intensity ultrasonic waves are generated by multiple ultrasonic ablation transducers to the lesion location for energy superposition to perform ablation, so that the intensity of a single ultrasonic wave can be controlled, so that the ultrasonic energy does not damage the blood vessels and generates lower heat release, thereby reducing damage to the vascular endothelium; in actual use, different ultrasonic energy treatments can be achieved in different areas by adjusting multiple ultrasonic ablation transducers.

[0051] See Figure 2 In some embodiments, the ultrasonic ablation transducer is a piezoelectric ceramic 31. Each ultrasonic ablation transducer is composed of at least two pieces of piezoelectric ceramics 31. The piezoelectric ceramics 31 and the ablation wire 32 are welded and bonded to the outside of the guidewire cavity. The piezoelectric ceramics 31 are arc-shaped or long strips and are fixed in a ring-shaped manner around the axis of the guidewire cavity. It should be understood that the shape and fixing method of the piezoelectric ceramics 31 in this embodiment are preferred. In other embodiments, different shapes and fixing methods can be used according to actual needs. Specifically, the piezoelectric ceramics 31 are evenly laid 360 degrees around the center of the guidewire cavity and are covered with a flexible material as a whole. ; Preferably, since the laying angle of the piezoelectric ceramic 31 is 360 degrees, ultrasonic ablation in multiple directions can be achieved; each piece of piezoelectric ceramic 31 is connected to an ablation wire 32 and can be independently controlled; it can be understood that the independent design of multiple pieces of piezoelectric ceramics 31 makes it possible to control the specific direction of ultrasonic ablation by controlling each piece of piezoelectric ceramic 31; it should be understood that the laying direction of the piezoelectric ceramic 31 of 360 degrees in this embodiment is only preferred. In other embodiments, the piezoelectric ceramic 31 can be arranged at multiple angles around the center of the guidewire cavity, and the laying angle of the piezoelectric ceramic 31 should not be understood as a limitation on the scope of protection of the present invention.

[0052] Figure 3The figure shows a schematic diagram of the structure of the ultrasound treatment system of an embodiment of the present invention. In this embodiment, the ultrasound treatment system includes the ultrasound ablation catheter described in the above embodiment, and the ultrasound treatment system also includes: an imaging display 7, a connecting device 5 and an energy generator 6. The functions of each cavity are realized by the cooperation of different internal cavities without interfering with each other; the imaging display 7 is used to receive the ultrasound energy information transmitted back by the ultrasound imaging component 2 and convert it into detailed image information of the diseased tissue. The doctor can accurately judge the location that needs treatment based on the image information; the connecting device 5 further includes a guide wire interface, an ablation wire interface and an imaging wire interface. In some embodiments, In this example, the connecting device 5 also includes a liquid feeding cavity; the guide wire and the ablation wire 32 enter the ultrasonic ablation catheter through the guide wire interface and the ablation wire interface, and the traction device 22 is connected to the ultrasonic imaging transducer 21 through the imaging wire interface; the energy generator 6 adjusts the voltage through the circuit amplification principle to control the magnitude of the ultrasonic energy, and the electrical energy is transmitted to the piezoelectric ceramic 31 in the ultrasonic ablation component 3 to do work, and the generation of ultrasonic waves is realized through the inverse piezoelectric effect; it can be understood that the use of piezoelectric ceramics 31 as an ultrasonic ablation transducer in this embodiment is only preferred, and other ultrasonic ablation transducers that can realize the conversion of electrical energy into ultrasonic energy can also be used as embodiments of the present invention.

[0053] To specifically illustrate the working principle of the ultrasound therapy system in this embodiment, the actual usage process is as follows:

[0054] The catheter body 1 is a flexible tube with a special-shaped inner cavity, and the interior is multi-cavity, which can be divided into a guide wire cavity and a diagnostic cavity; the catheter body 1 is made of soft resin material; a detection imaging component with an ultrasonic ablation transducer at the distal end is pre-placed in the diagnostic cavity, which is composed of an ultrasonic ablation transducer, an ablation wire 32, a proximal connecting device 5 and a traction device 22; the proximal end is the end close to the operator, and the distal end is the end away from the operator; during the specific operation, the device can reach the lesion position along the preset guide wire, and according to the positioning of the developing ring on the component, the developing ring close to the proximal end passes over the lesion position; and then through the liquid feeding cavity from the proximal connecting device 5 Push liquids such as physiological saline into the diagnostic cavity, thereby emptying the air in the diagnostic cavity and playing a certain lubricating role; then, the traction device 22 installed behind the connecting device 5 is used to uniformly retract the detection imaging component with the ultrasonic ablation transducer. At the same time, during the retraction process, the ultrasonic imaging component 2 can also rotate uniformly in the diagnostic cavity to emit ultrasonic detection waves in all directions, and the ultrasonic waves contact the lesion position and rebound back to the ultrasonic imaging component 2, and then bring the signal back and transmit it to the imaging display 7 connected to the connecting device 5; finally, detailed image information of the diseased tissue is obtained, and the doctor can accurately judge the position that needs treatment based on the image information.

[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An ultrasonic ablation catheter for intravascular imaging and treatment, characterized in that: include: a catheter body, wherein the interior of the catheter body is divided into a guidewire cavity and a diagnostic cavity, and a guidewire is passed through the guidewire cavity; At least two ultrasonic ablation components are provided in the diagnostic cavity, and the at least two ultrasonic ablation components are arranged axially along the guidewire cavity and circumferentially around the outside of the guidewire cavity; An ultrasonic imaging component is pre-buried in the diagnostic cavity; the ultrasonic imaging component includes an ultrasonic imaging transducer and a traction device, the traction device is connected to the ultrasonic imaging transducer via a wire, and is used to pull the ultrasonic imaging transducer toward the proximal end.

2. The ultrasonic ablation catheter according to claim 1, characterized in that The traction device includes a gear and a turntable, which is driven to rotate at a constant speed by the meshing of the gears, and then the ultrasonic imaging transducer at the distal end is pulled toward the proximal end at a constant speed through the connection between the turntable and the wire.

3. The ultrasonic ablation catheter for intravascular imaging and treatment according to claim 2, characterized in that: The traction device pulls the ultrasonic imaging component and rotates it at the same time, and the ultrasonic imaging transducer emits ultrasonic detection waves in all directions, thereby transmitting the signals to the imaging display.

4. The ultrasonic ablation catheter for intravascular imaging and treatment according to claim 1, characterized in that: Each of the ultrasonic ablation components includes at least two ultrasonic ablation transducers, and the ultrasonic ablation transducers are connected by wires.

5. The ultrasonic ablation catheter for intravascular imaging and treatment according to claim 3, characterized in that: The ultrasonic ablation transducers are evenly laid out 360 degrees around the center of the guidewire cavity.

6. The ultrasonic ablation catheter for intravascular imaging and treatment according to claim 5, characterized in that: The ultrasonic ablation transducers are independent of each other, and the intensity and propagation direction of a single ultrasonic wave are controlled by controlling each independent ultrasonic ablation transducer.

7. The ultrasonic ablation catheter for intravascular imaging and treatment according to claim 6, characterized in that: The ultrasonic ablation transducer is a piezoelectric ceramic, and the ultrasonic ablation component is composed of multiple pieces of piezoelectric ceramics spliced together.

8. The ultrasonic ablation catheter for intravascular imaging and treatment according to any one of claims 1 to 7, characterized in that: The ultrasonic ablation catheter further includes a developing component.

9. An ultrasound therapy system, characterized in that: include: An ultrasonic ablation catheter for intravascular imaging and treatment according to any one of claims 1 to 8; an energy generator, the energy generator being connected to the ultrasonic ablation component and the ultrasonic imaging component via a wire; An imaging display is connected to the ultrasound imaging assembly via a wire.

10. The ultrasonic treatment system according to claim 9, characterized in that: The ultrasonic treatment system also includes a connecting device, which includes a guidewire interface, an imaging wire interface, an ablation wire interface and a liquid supply interface; the imaging wire interface is connected to the traction device, the ablation wire interface is connected to the energy generator, and a wire connected to the ultrasonic ablation component is passed through the ablation wire interface.

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