Ultrasonic ablation system and intervention device

Abstract

The utility model provides an ultrasonic ablation system and an intervention device, the ultrasonic ablation system comprises an ablation catheter provided with an ablation assembly, and a first layer tube sleeved on the outer side of the ablation catheter, the first layer tube extends along the lengthwise direction of the ablation catheter to form a first balloon enclosing the ablation assembly; the ablation catheter is provided with a conveying flow path communicated with the first balloon, and the ablation catheter is attached to the outer tube wall of the first-layer tube and is concavely arranged to form an output groove communicated with the first balloon. The output groove is concavely formed in the outer pipe wall of the ablation catheter, so that the machining difficulty and the forming difficulty of the ablation catheter are reduced, and the circulation amount of a cooling medium is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to an ultrasonic ablation system and an interventional device. Background Art

[0002] Ablation therapy is also called destructive therapy, which can destroy solid tissues such as tumors or neural tissues. Ultrasonic ablation devices generate high-frequency sound wave energy through ablation components to ablate the tissue to be ablated. Ultrasonic ablation systems in the prior art usually have a balloon on the outside of the ablation component and a circulation channel for conveying cooling medium to the balloon to cool the ablation component when the ultrasonic ablation system is performing ablation, and circulate the cooling medium in the balloon through the circulation channel to keep the inside of the balloon at a suitable temperature to avoid damage to unnecessary ablation tissue.

[0003] The Chinese utility model patent application with announcement number CN218960913U discloses an ablation tube structure, comprising: a tube body with a water inlet channel and a water outlet channel, an energy component connected to the tube body, and a compartment mechanism mounted on the tube body; the tube body is constructed with a water inlet hole connected to the water inlet channel, and a water outlet hole connected to the water outlet channel; the compartment mechanism comprises: a water inlet compartment connected to the water inlet hole, a water outlet compartment connected to the water outlet hole, and a sealing member formed between the water inlet compartment and the water outlet compartment.

[0004] However, the water inlet channel and the water outlet channel included in the ablation tube structure in the above-mentioned prior art pass through the tube body. The tube body with multiple cavities is difficult to process and form. In order to ensure the stability of the tube body, it is necessary to limit the size of the water inlet channel and the water outlet channel in the tube body, resulting in a small flow rate of the cooling medium transmitted by the tube body and a poor cooling effect.

[0005] In view of this, it is necessary to improve the ablation tube structure in the prior art to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to disclose an ultrasonic ablation system and an interventional device, which are used to solve the many defects of the ablation tube structure in the prior art, especially to reduce the difficulty of processing and molding the ablation catheter and increase the flow rate of the cooling medium.

[0007] To achieve one of the above purposes, the utility model provides an ultrasonic ablation system, comprising: an ablation catheter equipped with an ablation component, and a first layer of tube sleeved on the outside of the ablation catheter, the first layer of tube extending along the longitudinal direction of the ablation catheter to form a first balloon enclosing the ablation component;

[0008] The ablation catheter is constructed with a delivery channel connected to the first balloon. The ablation catheter is attached to the outer tube wall of the first layer of tube and is recessed to form an output groove connected to the first balloon.

[0009] As a further improvement of the present invention, the output slot extends along the longitudinal direction of the ablation catheter and passes through one end of the ablation catheter close to the first balloon to be connected to the first balloon.

[0010] As a further improvement of the present invention, the delivery flow path includes: a delivery cavity that passes through the ablation catheter along the central axis of the ablation catheter.

[0011] As a further improvement of the present invention, the delivery flow path includes: a delivery groove formed by the ablation catheter being attached to the outer tube wall of the first layer of tube.

[0012] As a further improvement of the present invention, the ultrasonic ablation system also includes: a second layer of tube sleeved on the outside of the first layer of tube, the second layer of tube being constructed to enclose the first balloon and connected to the ablation catheter, the internal volume of the second balloon being variable, and the ablation catheter transporting a cooling medium to the second balloon and causing the second balloon to expand outward to an expanded state.

[0013] As a further improvement of the present invention, the ablation catheter is adhered to the outer tube wall of the first layer tube to form at least one transmission groove, the first layer tube is opened to form a transmission hole connected to the transmission groove, and the second balloon encloses the part of the first layer tube with the transmission hole so that the transmission groove can connect to the second balloon.

[0014] As a further improvement of the present invention, the transmission groove extends along the longitudinal direction of the ablation catheter to one end of the ablation catheter close to the first balloon and cooperates with the first layer tube to be isolated from the first balloon.

[0015] As a further improvement of the utility model, the end of the ablation catheter close to the ablation component is radially inwardly recessed to form a connecting tube section, the tube wall thickness of the connecting tube section is less than the tube wall thickness of the ablation catheter, and the two ends of the second layer tube are respectively formed on the part of the first layer tube where the connecting tube section is sleeved and the part of the first layer tube extending over the ablation component.

[0016] As a further improvement of the present invention, the second balloon is coaxially enclosed by the first balloon.

[0017] As a further improvement of the present invention, the ablation component includes: a base, and an energy component configured on the base, and the energy component includes an ultrasonic energy generating unit.

[0018] As a further improvement of the present invention, the ablation component includes: a base, and an energy component configured on the base, and the energy component includes: an imaging unit and an ultrasonic energy generating unit separately arranged along the circumference of the base.

[0019] As a further improvement of the present invention, the ablation catheter includes: a transmission shaft coaxially arranged in the delivery cavity and connected to the base, the transmission shaft drives the base to rotate along the central axis of the ablation catheter, a guide member arranged on the first layer tube extending over one end of the ablation component, and a pivot member arranged on the guide member along the central axis of the ablation catheter and forming a rotational fit with the base.

[0020] In a second aspect, the utility model also discloses an interventional device, comprising: a cooling medium delivery mechanism configured as any one of the above-mentioned inventions disclosed in the ultrasonic ablation system, the cooling medium delivery mechanism is connected to the ablation catheter, and a driving mechanism connected to the transmission shaft included in the ablation catheter to drive the transmission shaft to rotate.

[0021] Compared with the prior art, the beneficial effects of the utility model are: the ultrasonic ablation system, by opening an output slot on the outer tube wall of the ablation catheter, can reduce the processing difficulty of the ablation catheter compared to the multi-lumen catheter in the prior art, facilitate the molding of the ablation catheter body, ensure the stability of the ablation catheter, and the cooling medium delivered through the output slot can increase the flow rate of the cooling medium discharged in the first balloon, thereby improving the circulating cooling effect on the ablation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the ultrasonic ablation system disclosed in the utility model;

[0023] Figure 2 for Figure 1 Stereoscopic cross-sectional view of the ablation catheter and the first layer of tube cut in the middle AA direction;

[0024] Figure 3 for Figure 1 A three-dimensional cross-sectional view of the ablation catheter and the first layer of the tube cut from another perspective;

[0025] Figure 4 A schematic diagram of providing an output slot and a delivery lumen for an ablation catheter;

[0026] Figure 5 A schematic diagram of another embodiment of an ablation catheter with a delivery lumen and a delivery slot;

[0027] Figure 6 It is an overall schematic diagram of the interventional device including the ultrasonic ablation system disclosed in the present invention;

[0028] Figure 7Schematic diagram of the connection between the ultrasonic ablation system and the cooling medium delivery mechanism. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0030] It is particularly important to note that in the following embodiments, the term "axial" refers to Figure 2 The direction is indicated by the central axis Q of the ablation catheter 1.

[0031] Please refer to Figures 1 to 7 A specific implementation of an ultrasonic ablation system and an interventional device is disclosed.

[0032] Ginseng Figures 1 to 5 As shown, in this embodiment, the ultrasonic ablation system 10 includes: an ablation catheter 1 equipped with an ablation component 11, and a first layer tube 2 sleeved on the outside of the ablation catheter 1, the first layer tube 2 extending along the longitudinal direction of the ablation catheter 1 to form a first balloon 21 enclosing the ablation component 11; the ablation catheter 1 is constructed with a delivery flow path 12 connected to the first balloon 21, and the ablation catheter 1 is attached to the outer tube wall of the first layer tube 2 to form an output groove 13 connected to the first balloon 21. The delivery channel 12 and the output slot 13 are used to deliver cooling medium to the first balloon 21. It should be noted that the delivery channel 12 can be used to deliver cooling medium into the first balloon 21, and the output slot 13 is used to discharge the cooling medium inside the first balloon 21; the delivery channel 12 can also be used to discharge the cooling medium inside the first balloon 21, and the output slot 13 is used to deliver cooling medium into the first balloon 21; in this embodiment, preferably, the cooling medium is delivered into the first balloon 21 through the delivery channel 12, and the cooling medium inside the first balloon 21 is discharged through the output slot 13. The first layer tube 2 is sealed and connected to the ablation catheter 1 by bonding or other means to prevent the cooling medium delivered by the output slot 13 from leaking to the connection where the ablation catheter 1 is attached to the first layer tube 2.

[0033] Ginseng Figures 2 to 5As shown, the ablation catheter 1 delivers a cooling medium (e.g., saline) to the inside of the first balloon 21 through the delivery channel 12, and fills the first balloon 21 with the cooling medium to immerse the ablation component 11 in the cooling medium. During the ablation operation of the ablation component 11 on the tissue to be ablated, heat will be generated. The cooling medium absorbs the heat generated by the ablation component 11 during operation, thereby cooling the ablation component 11. The cooling medium that absorbs heat inside the first balloon 21 is discharged through the output slot 13 to cool the first balloon 21. The cooling medium inside 21 circulates to control the temperature of the first balloon 21 to avoid damage to unnecessary ablation tissue. The ultrasonic ablation system 10 opens an output slot 13 on the outer tube wall of the ablation catheter 1. Compared with the multi-lumen catheter in the prior art, it can reduce the processing difficulty of the ablation catheter 1, facilitate the molding of the ablation catheter 1, ensure the stability of the ablation catheter 1, and the cooling medium delivered through the output slot 13 can increase the flow rate of the cooling medium discharged from the first balloon 21, thereby improving the circulating cooling effect on the ablation component 11.

[0034] Exemplarily, in some embodiments, the ablation assembly 11 includes: a base 111, and an energy assembly 112 configured on the base 111, and the energy assembly 112 includes an ultrasonic energy generating unit 1121. In the process of delivering the ablation catheter 1 into the patient's body, the position of the tissue to be ablated can be determined by CT angiography or other medical imaging methods to align the ultrasonic energy generating unit 1121 with the tissue to be ablated.

[0035] In this embodiment, preferably, Figure 3 As shown, the ablation assembly 11 includes: a base 111, and an energy assembly 112 configured on the base 111, and the energy assembly 112 includes: an imaging unit 1122 and an ultrasonic energy generating unit 1121 that are separated and arranged along the circumference of the base 111. The base 111 is constructed with a partition 1111 clamped between the imaging unit 1122 and the ultrasonic energy generating unit 1121, so that the signals between the imaging unit 1122 and the ultrasonic energy generating unit 1121 are blocked by the partition 1111 to avoid mutual interference. In the process of delivering the ablation catheter 1 to the patient's lungs, the position of the tissue to be ablated is determined by the imaging unit 1122, so that the ultrasonic energy generating unit 1121 is aligned with the tissue to be ablated.

[0036] In this embodiment, preferably, Figures 2 to 4 As shown, the delivery channel 12 includes a delivery cavity 121 that passes through the ablation catheter 1 along the central axis Q of the ablation catheter 1. The cooling medium is delivered to the first balloon 21 through the delivery cavity 121, and the cooling medium fills the first balloon 21 to immerse the ablation assembly 11 in the cooling medium.

[0037] Specifically, refer to Figure 2 and Figure 3 As shown, the ablation catheter 1 includes: a transmission shaft 16 coaxially arranged in the delivery cavity 121 and connected to the base 111, the transmission shaft 16 drives the base 111 to rotate along the central axis Q of the ablation catheter 1, a guide member 17 arranged on the first layer tube 2 extending through one end of the ablation assembly 11, and a pivot member 18 arranged on the guide member 17 along the central axis Q of the ablation catheter 1 and forming a rotational fit with the base 111. The transmission shaft 16 is accommodated by the delivery cavity 121, so that the transmission shaft 16 can drive the base 111 to rotate along the central axis Q of the ablation catheter 1, and the cooling medium can flow to the inside of the first balloon 21 through the gap between the transmission shaft 16 and the delivery cavity 121. The guide member 17 extends out of the first layer of tube 2 and forms a guide end 171. The ablation catheter 1 is guided and delivered to the tissue to be ablated through the guide member 17. The base 111 is driven to rotate axially through the transmission shaft 16 to drive the imaging unit 1122 to realize circumferential ultrasonic imaging in the bronchus, increase the imaging range, and confirm the position of the tissue to be ablated. The base 111 is then driven to rotate axially through the transmission shaft 16 so that the working surface of the ultrasonic energy generating unit 1121 faces the tissue to be ablated, and the ultrasonic energy generating unit 1121 generates ultrasonic energy to accurately ablate the tissue to be ablated. The transmission shaft 16 and the base 111 are preferably fixedly connected by laser welding to ensure synchronization when the transmission shaft 16 drives the base 111 to rotate axially. The pivot member 18 at least partially axially penetrates the base 111, and the base 111 is constructed with a movable groove (not marked) for accommodating the pivot member 18 to achieve rotational cooperation with the pivot member 18. During the rotation of the base 111 around the axis Q, the pivot member 18 provides axial support to the base 111 to improve the stability of the axial rotation of the base 111 in the first balloon 21.

[0038] For example, in some embodiments, Figures 3 to 5As shown, the delivery channel 12 includes: a delivery cavity 121 that passes through the ablation catheter 1 along the central axis Q of the ablation catheter 1, and a delivery groove 122 that is formed by the ablation catheter 1 being attached to the outer tube wall of the first layer tube 2. The delivery channel 12 can supply cooling medium to the inside of the first balloon 21 through the gap between the delivery cavity 121 and the transmission shaft 16, and deliver cooling medium to the inside of the first balloon 21 through the delivery groove 122; or the delivery channel 12 only delivers cooling medium to the inside of the first balloon 21 through the delivery groove 122, and the delivery cavity 121 is used to accommodate the transmission shaft 16, so that the transmission shaft 16 drives the base 111 to rotate along the central axis Q of the ablation catheter 1. Exemplarily, in some embodiments, the delivery channel 12 includes: a delivery groove 122 that is formed by the ablation catheter 1 being attached to the outer tube wall of the first layer tube 2; the delivery channel 12 delivers cooling medium to the inside of the first balloon 21 through the delivery groove 122. The delivery groove 122 can extend along the longitudinal direction of the ablation catheter 1 and pass through one end of the ablation catheter 1 close to the first balloon 21 to connect with the first balloon 21; by opening the delivery groove 122 along the longitudinal direction of the ablation catheter 1 on the outer tube wall of the ablation catheter 1 and passing through one end of the ablation catheter 1 close to the first balloon 21, the tube body of the ablation catheter 1 is facilitated to be formed, and by passing through one end of the ablation catheter 1 close to the first balloon 21, the delivery groove 122 is connected to the first balloon 21, and the flow rate of the cooling medium input to the first balloon 21 is increased, thereby improving the circulating cooling effect of the ablation component 11.

[0039] In this embodiment, preferably, Figure 4 As shown, the delivery channel 12 includes: the central axis Q of the ablation catheter 1 passes through the delivery cavity 121 of the ablation catheter 1; the delivery channel 12 supplies cooling medium to the inside of the first balloon 21 through the gap between the delivery cavity 121 and the transmission shaft 16.

[0040] Specifically, refer to Figure 2 and Figure 4 As shown, the output slot 13 extends along the longitudinal direction of the ablation catheter 1 and penetrates the end of the ablation catheter 1 close to the first balloon 21 to connect with the first balloon 21. By opening the output slot 13 along the longitudinal direction of the ablation catheter 1 on the outer tube wall of the ablation catheter 1 and penetrating the end of the ablation catheter 1 close to the first balloon 21, the tube body of the ablation catheter 1 is easily formed, and the output slot 13 penetrates the end of the ablation catheter 1 close to the first balloon 21 so that the output slot 13 is connected to the first balloon 21, and the flow rate of the cooling medium in the first balloon 21 discharged through the output slot 13 is increased.

[0041] Specifically, refer to Figures 1 to 3As shown, the ultrasonic ablation system 10 also includes: a second layer of tube 3 sleeved on the outside of the first layer of tube 2, the second layer of tube 3 is constructed to enclose the first balloon 21 and connect to the ablation catheter 1. The internal volume of the second balloon 31 is variable. The ablation catheter 1 delivers a cooling medium to the second balloon 31 and causes the second balloon 31 to expand outward to an expanded state. When the ablation catheter 1 guides the ablation component 11 to a gas-containing part of the lung (taking the bronchus as an example) and aligns it with the tissue to be ablated (for example, a lung nodule), the ablation catheter 1 delivers a cooling medium to the inside of the first balloon 21 and the second balloon 31 respectively, and fills the first balloon 21 and the second balloon 31 with the cooling medium, so as to immerse the ablation component 11 in the cooling medium in the first balloon 21. At the same time, the second balloon 31 will expand radially outward as the cooling medium is continuously injected to switch from an unexpanded state to an expanded state. The ablation component 11 is enclosed by the first balloon 21, and the first balloon 21 is used to enclose the ablation component 11, so as to avoid the first balloon 21 being biased toward one side of the bronchial wall due to the morphology of the bronchus and the internal stress of the ablation catheter 1, so that the ablation component 11 is located within the first balloon 21. 1 is centered with the bronchus so that the focal position of the ultrasonic energy generated by the ablation component 11 can be accurately aligned with the tissue to be ablated, and at the same time, the first balloon 21 will be immersed in the cooling medium in the second balloon 31, so that the ultrasonic energy generated by the ablation component 11 will be transmitted outwardly through the cooling medium in the first balloon 21 and pass through the first balloon 21 to the second balloon 31, and the ultrasonic energy will continue to be transmitted outwardly through the cooling medium in the second balloon 31 and pass through the balloon wall of the second balloon 31, so that the focus of the ultrasonic energy can achieve precise ablation of the tissue to be ablated. Since the lungs contain more gas and ultrasonic energy cannot be transmitted in the air, it is difficult for the interventional device with ultrasonic ablation function in the prior art to ablate the tissue to be ablated in the gas-containing part of the lung when working in the gas-containing part of the lung. Therefore, the ultrasonic ablation system 10 further solves the problem that the interventional device with ultrasonic ablation function in the prior art is difficult to ablate the tissue to be ablated in the bronchus when working in the bronchus of the lung.

[0042] In addition, the first balloon 21 encloses the ablation component 11 to avoid the ablation component 11 being unable to be centered with the bronchus due to the bronchial morphology and the internal stress of the ablation catheter 1, prevents the focus position of the ultrasonic energy generated by the ablation component 11 from deviating from the tissue to be ablated, and avoids the ablation misalignment from causing damage to unnecessary ablation tissue. The cooling medium in the first balloon 21 absorbs the heat generated by the ablation component 11 when it is working, which can cool the ablation component 11. The cooling medium in the second balloon 31 can cool the first balloon 21 to avoid the heat generated by the ablation component 11 from burning the first balloon 21. Since the ablation component 11 contains heavy metals, the second balloon 31 encloses the first balloon 21 to prevent the heavy metals mixed with the cooling medium in the first balloon 21 from leaking into the patient's lungs. The first balloon 21 and the second balloon 31 are stacked to enclose the ablation component 11, so as to further provide physical protection for the ablation component 11 and reduce the risk of damage to the ablation component 11.

[0043] It should be noted that, in the present embodiment, the first balloon 21 is preferably a non-compliant balloon, and the second balloon 31 is preferably a balloon with good compliance. Exemplarily, the volume of the second balloon 31 can be expanded to 5 times that of its unexpanded state.

[0044] Specifically, refer to Figure 2 and Figure 4 As shown, the ablation catheter 1 is attached to the outer tube wall of the first layer tube 2 to form at least one transmission groove 14, the first layer tube 2 is provided with a transmission hole 22 connected to the transmission groove 14, and the second balloon 31 surrounds the portion of the first layer tube 2 with the transmission hole 22 so that the transmission groove 14 can be connected to the second balloon 31. The ablation catheter 1 transmits cooling medium to the second balloon 31 through the transmission groove 14, and the transmission groove 14 inputs or discharges the cooling medium into or out of the second balloon 31 through the transmission hole 22. By providing the transmission groove 14 on the outer tube wall of the ablation catheter 1, the processing difficulty of the ablation catheter 1 can be reduced, the molding of the ablation catheter 1 tube body can be facilitated, and the flow rate of the cooling medium input or discharged into or out of the second balloon 31 is increased while ensuring the stability of the ablation catheter 1, thereby improving the circulation cooling effect on the first balloon 21.

[0045] Further, Figure 2 and Figure 4As shown, the transmission groove 14 extends along the longitudinal direction of the ablation catheter 1 to the end of the ablation catheter 1 close to the first balloon 21 and cooperates with the first layer tube 2 to be isolated from the first balloon 21. The transmission groove 14 is opened on the outer tube wall of the ablation catheter 1 along the longitudinal direction of the ablation catheter 1, and the transmission groove 14 does not penetrate the end of the ablation catheter 1 close to the first balloon 21, and the first layer tube 2 is sealed and connected to the ablation catheter 1 by bonding or the like to prevent the cooling medium transported by the transmission groove 14 from leaking to the first balloon 21 through the connection between the ablation catheter 1 and the first layer tube 2, thereby isolating the transmission groove 14 from the first balloon 21, avoiding the transmission groove 14 from being connected to the first balloon 21, and further separately managing the cooling medium flow delivered to the first balloon 21 and the second balloon 31.

[0046] Further, Figures 2 to 4 As shown, the end of the ablation catheter 1 close to the ablation component 11 is radially inwardly recessed to form a connecting tube section 15, and the tube wall thickness of the connecting tube section 15 is less than the tube wall thickness of the ablation catheter 1, and the two ends of the second layer tube 3 are respectively formed on the part of the first layer tube 2 where the connecting tube section 15 is sleeved and the part of the first layer tube 2 extending over the ablation component 11. The first layer of tube 2 is sealed to connect the ablation catheter 1 and the connecting tube section 15 by bonding or other means, the second layer of tube 3 is sleeved on the first layer of tube 2 and is sealed to connect the first layer of tube 2 by bonding or other means, and the two ends of the second layer of tube 3 along the axis Q direction of the ablation catheter 1 are respectively formed at the part of the first layer of tube 2 sleeved with the connecting tube section 15 and the part of the first layer of tube 2 extending through the ablation assembly 11, and the second layer of tube 3 is sleeved on the outer side of the part of the tube body of the first layer of tube 2 sleeved with the connecting tube section 15, so that the first layer of tube 2 and the second layer of tube 3 are layered and installed on the outer side of the ablation catheter 1, so that the second balloon 31 encloses the first balloon 21, and effectively reduces the radial size of the ablation catheter 1 equipped with the first layer of tube 2 and the second layer of tube 3, thereby improving the applicable scope of the ultrasonic ablation system 10 in bronchi with different inner diameters, such as the left main bronchus, the right main bronchus, the left lower lobe bronchus, etc. Preferably, the total wall thickness of the connecting tube section 15, the first layer of tube 2 and the second layer of tube 3 is less than or equal to the wall thickness of the ablation catheter 1.

[0047] Specifically, refer to Figure 3 As shown, the first layer tube 2 is sleeved on the ablation catheter 1 along the axis Q of the ablation catheter 1, the second layer tube 3 is coaxially sleeved on the first layer tube 2, and the second balloon 31 is coaxially enclosed on the first balloon 21. During the outward expansion of the second balloon 31, the balloon wall (not marked) of the second balloon 31 can expand outward uniformly and have the same radial expansion amplitude, so as to ensure that the second balloon 31 prevents the ablation component 11 from shifting when pressing against the tissue to be ablated, so as to ensure that the ablation component 11 is centered with the bronchus in the first balloon 21, and to avoid the ablation component 11 from causing damage to unnecessary ablation tissue during the ablation of the tissue to be ablated.

[0048] Based on the technical solution of an ultrasonic ablation system 10 disclosed in the aforementioned embodiment, this embodiment further discloses an interventional device.

[0049] Ginseng Figure 6 and Figure 7 As shown, the interventional device 100 includes: a cooling medium delivery mechanism 20 configured with the ultrasonic ablation system 10 as disclosed in the above-mentioned embodiment, the cooling medium delivery mechanism 20 is connected to the ablation catheter 1, and a driving mechanism 30 connected to the transmission shaft 16 included in the ablation catheter 1 to drive the transmission shaft 16 to rotate. The output slot 13 is opposite to one end of the first balloon 21 and extends along the longitudinal direction of the ablation catheter 1 to the cooling medium delivery mechanism 20, and the first layer of the tube 2 is provided with an output hole (not shown) for the cooling medium delivery mechanism 20 to connect to the output slot 13, and the delivery cavity 121 passes through the ablation catheter 1 along the central axis Q of the ablation catheter 1 and is connected to the cooling medium delivery mechanism 20; the transmission slot 14 is opposite to one end of the second balloon 31 and extends along the longitudinal direction of the ablation catheter 1 to the cooling medium delivery mechanism 20, and the first layer of the tube 2 is provided with a transmission hole (not shown) for the cooling medium delivery mechanism 20 to connect to the transmission slot 14. The interventional device 100 further includes a handle 40 . The cooling medium delivery mechanism 20 and the driving mechanism 30 are both disposed on the handle 40 . The driving mechanism 30 is rotatably connected to the handle 40 . The cooling medium delivery mechanism 20 connects the delivery flow path 12 and the output slot 13. By starting the peristaltic pump (not shown), the peristaltic pump inputs the cooling medium into the delivery cavity 121 through the cooling medium delivery mechanism 20. The cooling medium flows to the first balloon 21 through the delivery cavity 121, and the cooling medium fills the first balloon 21, so that the ablation component 11 is immersed in the cooling medium, so as to transfer the ultrasonic energy generated by the ablation component 11 and cool the heat generated during the operation of the ablation component 11. As the cooling medium is continuously injected into the first balloon 21, the cooling medium in the first balloon 21 that absorbs heat will flow through the output hole (not shown) in the output slot 13 to the cooling medium delivery mechanism 20 and be discharged into the peristaltic pump, so as to circulate the cooling medium in the first balloon 21, thereby controlling the internal temperature of the first balloon 21 and preventing the heat generated by the ablation component 11 from being too high and burning the first balloon 21.

[0050] By starting the peristaltic pump (not shown), the peristaltic pump inputs the cooling medium to the cooling medium delivery mechanism 20, and the cooling medium delivery mechanism 20 then inputs the cooling medium to the transmission slot 14 through the transmission hole (not shown), and the cooling medium flows in the transmission slot 14 to the inside of the second balloon 31, so that the second balloon 31 expands outward and switches from an unexpanded state to an expanded state, and the second balloon 31 is kept in the expanded state after positioning the tissue to be ablated, and then the peristaltic pump is stopped to input the cooling medium to the second balloon 31, so that the ablation component 11 is centered with the bronchus in the first balloon 21, and the first balloon 21 is immersed in the cooling medium in the second balloon 31, so that the ultrasonic energy generated by the ablation component 11 will pass through the first balloon 21 The cooling medium in the balloon 21 is transferred outward and passes through the first balloon 21 to the second balloon 31, and then continues to be transferred outward through the cooling medium in the second balloon 31 to achieve ablation of the tissue to be ablated through the balloon wall of the second balloon 31. The cooling medium in the first balloon 21 can absorb the heat generated by the ablation component 11 when it is working, and can cool the ablation component 11. The first balloon 21 is cooled by the cooling medium in the second balloon 31 to avoid excessive heat generated by the ablation component 11 from burning the first balloon 21. After the ablation is completed, the cooling medium in the first balloon 21 that has absorbed the heat will flow through the transmission hole in the transmission slot 14 to the cooling medium delivery mechanism 20 and be discharged into the peristaltic pump.

[0051] By setting up a driving mechanism 30, the transmission shaft 16 is driven to rotate in the delivery cavity 121, so as to drive the imaging unit 1122 to realize circumferential ultrasonic imaging in the bronchus, increase the imaging range, and confirm the position of the tissue to be ablated, so that the working surface of the ultrasonic energy generating unit 1121 faces the tissue to be ablated, and the ultrasonic energy generating unit 1121 generates ultrasonic energy to accurately ablate the tissue to be ablated.

[0052] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0053] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An ultrasonic ablation system, characterized in that: include: An ablation catheter equipped with an ablation component, and a first layer of tube sleeved on the outside of the ablation catheter, wherein the first layer of tube extends along the longitudinal direction of the ablation catheter to form a first balloon enclosing the ablation component; The ablation catheter is constructed with a delivery channel connected to the first balloon. The ablation catheter is attached to the outer tube wall of the first layer of tube and is recessed to form an output groove connected to the first balloon.

2. The ultrasonic ablation system according to claim 1, characterized in that: The output slot extends along the longitudinal direction of the ablation catheter and passes through an end of the ablation catheter close to the first balloon to be connected to the first balloon.

3. The ultrasonic ablation system according to claim 1, characterized in that: The delivery flow path includes: a delivery cavity penetrating the ablation catheter along the central axis of the ablation catheter.

4. The ultrasonic ablation system according to claim 1 or 3, characterized in that: The delivery flow path includes: a delivery groove formed by the ablation catheter being attached to the outer tube wall of the first layer of tube.

5. The ultrasonic ablation system according to claim 1, characterized in that: The ultrasonic ablation system also includes: a second layer of tube sleeved outside the first layer of tube, the second layer of tube is constructed to enclose the first balloon and connect to the ablation catheter, the internal volume of the second balloon is variable, the ablation catheter transports cooling medium to the second balloon and causes the second balloon to expand outward to an expanded state.

6. The ultrasonic ablation system according to claim 5, characterized in that: The ablation catheter is attached to the outer tube wall of the first layer tube to form at least one transmission groove, the first layer tube is opened to form a transmission hole connected to the transmission groove, and the second balloon surrounds the part of the first layer tube with the transmission hole so that the transmission groove is connected to the second balloon.

7. The ultrasonic ablation system according to claim 6, characterized in that: The transmission groove extends along the longitudinal direction of the ablation catheter to one end of the ablation catheter close to the first balloon and cooperates with the first layer tube to be isolated from the first balloon.

8. The ultrasonic ablation system according to claim 5, characterized in that: The end of the ablation catheter close to the ablation component is radially inwardly recessed to form a connecting tube section, the tube wall thickness of the connecting tube section is less than the tube wall thickness of the ablation catheter, and the two ends of the second layer tube are respectively formed at the part of the first layer tube where the connecting tube section is sleeved and the part of the first layer tube extending over the ablation component.

9. The ultrasonic ablation system according to claim 5, characterized in that: The second balloon is coaxially enclosed by the first balloon.

10. The ultrasonic ablation system according to claim 3, characterized in that: The ablation component includes: a base, and an energy component configured on the base, and the energy component includes an ultrasonic energy generating unit.

11. The ultrasonic ablation system according to claim 3, characterized in that: The ablation component includes: a base, and an energy component configured on the base, and the energy component includes: an imaging unit and an ultrasonic energy generating unit separately arranged along the circumference of the base.

12. The ultrasonic ablation system according to claim 10 or 11, characterized in that: The ablation catheter includes: a transmission shaft coaxially arranged in the delivery cavity and connected to the base, the transmission shaft drives the base to rotate along the central axis of the ablation catheter, a guide member arranged on the first layer tube extending over one end of the ablation component, and a pivot member arranged on the guide member along the central axis of the ablation catheter and forming a rotational fit with the base.

13. An interventional device, characterized in that: include: A cooling medium delivery mechanism of the ultrasonic ablation system as claimed in any one of claims 1 to 12 is configured, wherein the cooling medium delivery mechanism is connected to the ablation catheter and a driving mechanism connected to the transmission shaft included in the ablation catheter to drive the transmission shaft to rotate.

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