Microwave ablation device with water spraying protection

Abstract

The invention provides a microwave ablation device with a water spraying protection function, and belongs to the technical field of microwave ablation devices. Comprising an integration box and a needle rod, the needle rod is fixedly connected with the integration box, one end of the needle rod is inserted into the integration box and fixedly connected with an adapter, the other end of the needle rod extends out of the integration box and is provided with a needle head, a water seepage area is further arranged between the needle head and the needle rod, and a transmitting antenna and a cooling circulation pipe are arranged in the needle head in a sleeved mode. According to the invention, by arranging the water seepage area, the water seepage holes and the cooling circulation pipe, a dual cooling mechanism is constructed, except for normal saline circulating in the cooling circulation pipe, part of the normal saline flows out through the water seepage holes in the water seepage area and fills the periphery of the needle head where the transmitting antenna is located; the temperature of the transmitting antenna, the needle head and the whole needle rod can be remarkably reduced by matching with circulating normal saline for cooling in the cooling circulating pipe, the thermal damage risk is greatly reduced, tissue carbonization in the ablation process is prevented, and needle breakage caused by too high temperature of the needle head is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of microwave ablation devices, and in particular to a microwave ablation device with water spray protection. Background Art

[0002] Microwave ablation therapy technology is a minimally invasive treatment method widely used in the field of clinical tumor treatment. Its principle is to radiate microwave energy to the target tissue through the transmitting antenna of the microwave ablation needle, causing polar molecules such as water molecules in the tissue to vibrate and rub at high speed to generate heat, thereby achieving thermal coagulation necrosis of the diseased tissue.

[0003] However, this technology still faces two major technical difficulties in clinical application. First, during the microwave ablation process, the temperature of the tissue around the transmitting antenna will rise sharply. This high-temperature environment will not only easily cause thermal damage to the ablation needle itself, and then cause the temperature to be too high and cause the needle to break, but may also cause excessive thermal damage to the surrounding normal tissues, leading to tissue carbonization and increasing the risk of surgical complications. Especially under high temperature conditions, tissue properties will change, further affecting the treatment effect. Secondly, due to the differences in human tissue characteristics, the propagation and distribution of microwave energy in the tissue are often uneven, which can easily lead to problems such as irregular shape of the ablation area and incomplete ablation range, directly affecting the accuracy and effectiveness of the treatment. Therefore, this application provides a microwave ablation device with water spray protection to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a microwave ablation device with water spray protection to solve the problem that existing microwave ablation devices are prone to causing thermal damage and carbonization of normal tissues and uneven propagation and distribution of microwave energy in tissues, affecting the accuracy and effectiveness of treatment.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A microwave ablation device with water spray protection comprises an integrated box and a needle rod, the needle rod and the integrated box are fixedly connected, one end of the needle rod is inserted into the interior of the integrated box and is fixedly connected to an adapter, the other end of the needle rod extends to the outside of the integrated box and is provided with a needle head, a water seepage area is also provided between the needle head and the needle rod, and a transmitting antenna and a cooling circulation pipe are provided in the needle head, a circulation input end and a circulation output end are respectively provided at both ends of the cooling circulation pipe, the circulation input end and the circulation output end both extend to the interior of the water seepage area, an outlet is provided between the adapter and the cooling circulation pipe. A water branch is provided, and a water inlet branch is provided between the adapter and the water seepage area, evenly distributed water seepage holes are opened on the outside of the water seepage area, and a closing component is also provided in the water seepage area; the water inlet branch is used to input physiological saline into the water seepage area and the cooling circulation pipe, and the water inlet branch is connected to the adapter and the water seepage area; the water outlet branch is used to recover and circulate the physiological saline after the cooling work is completed, and the water outlet branch is connected to the adapter and the cooling circulation pipe; the closing component is used to seal the water seepage holes after the physiological saline is filled into the tissue, and the closing component is sleeved in the water seepage area.

[0006] Optionally, the transmitting antenna is fixedly connected to the middle position inside the needle, the cooling circulation tube is spirally wrapped around the outside of the transmitting antenna, and two connecting tubes are provided on the outside of the adapter. The ends of the two connecting tubes extend to the outside of the integrated box and are respectively connected to the cooling input tube and the cooling output tube.

[0007] Optionally, the water inlet branch includes one of the connecting pipes connected to the seepage area through the input branch pipe, the connecting pipe is connected to the cooling input pipe, a flow control valve is provided on the cooling input pipe, and the end of the input branch pipe away from the adapter is inserted into the interior of the seepage area.

[0008] Optionally, the water outlet branch includes another connecting pipe connected to the circulation output end through the output branch pipe, the connecting pipe is connected to the cooling output pipe, a pressure regulating device is provided on the cooling output pipe, and the end of the output branch pipe away from the adapter is connected to the circulation output end.

[0009] Optionally, the output branch pipe and the input branch pipe are symmetrically positioned in the water seepage area, and the circulation output end and the output branch pipe pass through the interior of the water seepage area together.

[0010] Optionally, the two ends of the seepage hole opened on the seepage area are a large end of the water hole and a small end of the water hole, respectively. The large end of the water hole is opened on the inner wall of the water seepage area, and the small end of the water hole is opened outside the water seepage area. The diameter of the large end of the water hole is larger than the diameter of the small end of the water hole, and the small end of the water hole is opened toward the position where the end of the transmitting antenna is located.

[0011] Optionally, the sealing component includes a sealing seat sleeved inside the water seepage area, the sealing seat is annular, and the exterior of the sealing seat is in contact with the inner side wall of the water seepage area.

[0012] Optionally, a spring is fixedly connected between the outside of the closing seat and the inner wall of the water seepage area, and a positioning tube surrounding the outside of the spring is fixedly connected to the outside of the closing seat. When the positioning tube contacts the inner wall of the water seepage area, the position of the closing seat corresponds to the position of the water seepage hole.

[0013] Optionally, a limiting hole that matches the shape of the output branch is opened on the closing seat, and the closing seat is sleeved on the outside of the output branch through the limiting hole. The opening position of the limiting hole is symmetrical to the connection position of the spring and the positioning tube outside the closing seat.

[0014] Optionally, partitions are symmetrically installed on the inner side of the closing seat and distributed on both sides of the input branch pipe. The two partitions and the closing seat form an impact zone corresponding to the position of the input branch pipe. The outside of the closing seat is also provided with symmetrically distributed through openings.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, a dual cooling mechanism is constructed by setting up a water seepage area, water seepage holes and a cooling circulation pipe. In addition to the physiological saline circulating in the cooling circulation pipe, part of the physiological saline flows out through the water seepage holes on the water seepage area and fills around the needle where the transmitting antenna is located. It can cooperate with the physiological saline used for cooling circulating in the cooling circulation pipe to significantly reduce the temperature of the transmitting antenna, the needle and the entire needle rod, greatly reducing the risk of thermal damage, preventing tissue carbonization during ablation, and avoiding needle breakage due to excessive needle temperature.

[0016] By setting up water seepage areas and water seepage holes, physiological saline can be filled around the needle where the transmitting antenna is located through the water seepage areas and water seepage holes. In addition to assisting cooling, it also changes the medium environment for microwave propagation in the tissue, making the microwave energy more evenly distributed in the tissue, and can form a more regular and complete ablation area, thereby improving the effect of ablation treatment.

[0017] By setting up a sealing component and a flow control valve, a clever switching of working modes is achieved. By adjusting the flow control valve, the flow rate of saline can be controlled, and the impact force on the sealing seat can be controlled. During the stage of saline filling into the tissue, the sealing seat does not block the water seepage hole. During the ablation stage of the transmitting antenna, the flow rate of saline is accelerated, so that the sealing seat is subjected to a greater impact force and displacement, forming a closure for the water seepage hole, so that the subsequent saline entering will no longer fill the tissue, but will be all used for cooling of microwave ablation, thereby ensuring the cooling effect.

[0018] By setting a large end and a small end of the water hole at both ends of the water seepage hole, the water seepage hole as a whole is tilted toward the position of the end of the transmitting antenna, controlling the filling position of the saline solution seeping from the water seepage hole in the tissue, and directionally guiding the saline solution to gather toward the end of the transmitting antenna, thereby enhancing the cooling effect on key parts. At the same time, the resistance encountered by the needle and needle rod when penetrating the tissue is reduced, thereby improving the smoothness of the operation and making the process of filling the tissue with saline solution smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a microwave ablation device with water spray protection; Figure 2 It is a schematic diagram of the partial cross-sectional structure of the integrated box; Figure 3 for Figure 2 A in the middle is an enlarged structural diagram; Figure 4 for Figure 2 The enlarged structural diagram at B in the middle; Figure 5 Schematic diagram of the cross-sectional structure of the needle; Figure 6 This is a schematic diagram of the coordinated structure of the water seepage area, transmitting antenna, and cooling circulation pipe; Figure 7 It is a schematic diagram of the partial cross-sectional structure of the seepage area; Figure 8 for Figure 7 The enlarged structural diagram at C in the middle; Figure 9 It is a schematic diagram of the three-dimensional structure of the closed seat; Figure 10 This is a schematic diagram of the coordination structure between the closing seat and the input branch pipe; Figure 11 It is a schematic diagram of the cross-sectional structure of the seepage area; Figure 12 for Figure 11 Enlarged structural diagram at point D in the middle.

[0021] Reference numerals: 1. Integrated box; 2. Needle rod; 3. Cooling input pipe; 4. Cooling output pipe; 5. Flow control valve; 6. Pressure regulating device; 7. Needle; 8. Water seepage area; 9. Water seepage hole; 10. Transmitting antenna; 11. Cooling circulation pipe; 12. Circulation input end; 13. Circulation output end; 14. Input branch pipe; 15. Output branch pipe; 16. Closing seat; 17. Spring; 18. Positioning tube; 19. Limit hole; 20. Through opening; 21. Partition; 22. Large end of water hole; 23. Small end of water hole; 24. Adapter; 25. Connecting pipe.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0023] The following describes in detail a microwave ablation device with water spray protection provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are optimal and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0024] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0025] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0026] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0027] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0028] like Figures 1 to 4 As shown, an embodiment of the present invention provides a microwave ablation device with water spray protection, including an integrated box 1 and a needle rod 2, the needle rod 2 is fixedly connected to the integrated box 1, one end of the needle rod 2 is inserted into the interior of the integrated box 1 and is fixedly connected to the adapter 24, the other end of the needle rod 2 extends to the outside of the integrated box 1 and is provided with a needle head 7, a water seepage area 8 is also provided between the needle head 7 and the needle rod 2, and a transmitting antenna 10 and a cooling circulation pipe 11 are sleeved in the needle head 7, the transmitting antenna 10 is fixedly connected to the middle position inside the needle head 7, and the cooling circulation pipe 11 is spirally wrapped around the outside of the transmitting antenna 10, A circulation input end 12 and a circulation output end 13 are respectively provided at both ends of the cooling circulation tube 11. The circulation input end 12 and the circulation output end 13 both extend to the inside of the water seepage area 8. When the physiological saline used for cooling enters the water seepage area 8, it can be injected into the inside of the cooling circulation tube 11 through the circulation input end 12 and transported along the spiral structure of the cooling circulation tube 11, thereby reducing the external temperature of the cooling circulation tube 11. When the transmitting antenna 10 is working and emitting microwaves, the ambient temperature inside the needle 7 is reduced, thereby effectively avoiding damage to the tissue caused by overheating of the transmitting antenna 10 and the needle 7.

[0029] In this embodiment, if Figures 2 to 7As shown, the outside of the seepage area 8 is provided with evenly distributed seepage holes 9, and the outside of the adapter 24 is provided with two connecting pipes 25. The ends of the two connecting pipes 25 extend to the outside of the integrated box 1 and are respectively connected to the cooling input pipe 3 and the cooling output pipe 4. The cooling input pipe 3 is provided with a flow control valve 5, and the cooling output pipe 4 is provided with a pressure regulating device 6. The two connecting pipes 25 outside the adapter 24 are connected to the seepage area 8 and the circulation output end 13 through the input branch pipe 14 and the output branch pipe 15 respectively. The input branch pipe 14 is far away from the end of the adapter 24. Inserted into the seepage area 8, the output branch 15 is connected to the circulation output end 13 at one end away from the adapter 24, the cooling input pipe 3, the connecting pipe 25 connected to the input branch 14, the input branch 14, the seepage area 8 and the circulation input end 12 together form a water inlet branch. During specific use, the flow rate of the water inlet branch is adjusted by the flow control valve 5, so that the physiological saline can enter the seepage area 8 and the cooling circulation pipe 11 along the channel formed by the water inlet branch. Part of the physiological saline entering the seepage area 8 flows out through the seepage hole 9 on the seepage area 8. The physiological saline solution filled around the needle 7 where the transmitting antenna 10 is located can, on the one hand, cooperate with the physiological saline solution for cooling circulating in the cooling circulation tube 11 to significantly reduce the temperature of the transmitting antenna 10, the needle 7 and the entire needle shaft 2, greatly reducing the risk of thermal damage, preventing tissue carbonization during the ablation process, and avoiding the needle 7 from being broken due to excessive temperature. On the other hand, the physiological saline solution filled around the needle 7 where the transmitting antenna 10 is located changes the medium environment for microwave propagation, making the microwave energy more evenly distributed in the tissue, and forming a more regular and complete In order to improve the ablation area and the effect of ablation treatment, the needle rod 2, needle head 7 and water seepage area 8 are made of corrosion-resistant and biocompatible metal materials, such as titanium alloy, to ensure that corrosion, deformation and other problems will not occur during long-term contact with physiological saline, thereby ensuring the structural stability and safety of the ablation needle. The cooling input tube 3, cooling output tube 4, connecting tube 25, input branch tube 14, output branch tube 15 and cooling circulation tube 11 are made of medical-grade polymer materials, such as polytetrafluoroethylene, which has good chemical stability and corrosion resistance, and can ensure the smooth delivery of physiological saline.

[0030] In this embodiment, if Figure 2 as well as Figures 5 to 10As shown, the other physiological saline entering the seepage area 8 enters the cooling circulation pipe 11 through the channel formed by the water inlet branch to cool the inside of the needle 7. The cooling output pipe 4, the connecting pipe 25 connected to the output branch 15, the output branch 15 and the circulation output end 13 together form a return branch. The physiological saline that has completed the cooling work in the cooling circulation pipe 11 can be recovered from the needle rod 2 and the needle 7 through the channel formed by the return branch and recycled for cooling. The pressure regulating device 6 installed on the cooling output pipe 4 can adjust the negative pressure in the return branch, thereby ensuring that the physiological saline after cooling the needle 7 and the transmitting antenna 10 can flow back smoothly, maintaining the circulation of the physiological saline in the two branches, and the input end of the water inlet branch is connected to the cooling input pipe 3 and the flow control valve 5 through the cooling input pipe 3. The output end of the external physiological saline storage device is connected to the seepage area 8 through the input branch 14, ensuring that the physiological saline can be filled into the tissue where the needle 7 is located through the seepage hole 9 on the seepage area 8 when passing through the water inlet branch. The input end of the return water branch is connected to the circulation input end 12 through the output branch 15, and the output end is connected to the heat exchange device through the cooling output pipe 4 and the pressure regulating device 6, and then the cooled physiological saline is collected. The physiological saline after the cooling work is returned to the external heat exchange device, and after heat exchange, it is circulated to the physiological saline storage device, thereby realizing the recycling of the physiological saline by the entire device. The principles and usage effects of the above-mentioned flow control valve 5, pressure regulating device 6, physiological saline storage device and heat exchange device are the same as those in the prior art and will not be described in detail here.

[0031] In this embodiment, if Figures 11 to 12 As shown, the two ends of the water seepage hole 9 opened on the water seepage area 8 are respectively a large water hole end 22 and a small water hole end 23. The large water hole end 22 is opened on the inner wall of the water seepage area 8, and the small water hole end 23 is opened outside the water seepage area 8. The diameter of the large water hole end 22 is larger than the diameter of the small water hole end 23, and the small water hole end 23 is opened toward the position where the end of the transmitting antenna 10 is located. This design makes the water seepage hole 9 as a whole inclined toward the position where the end of the transmitting antenna 10 is located, thereby controlling the filling position of the physiological saline seeping from the water seepage hole 9 in the tissue, ensuring that the physiological saline can be evenly distributed. The filling is outside the needle 7 where the transmitting antenna 10 is located, thereby ensuring the enhancement of the cooling effect and the effect of changing the medium environment for microwave propagation. The small-diameter design of the small end 23 of the water hole makes the exposed space outside the water seepage area 8 smaller, reducing the resistance encountered by the needle 7 and the needle rod 2 when penetrating the tissue, and reducing the impact of the opening of the water seepage hole 9 on the penetration of the needle rod 2 and the needle 7 into the tissue as much as possible. The large-diameter design of the large end 22 of the water hole can increase the outlet area of ​​the physiological saline from the inside of the water seepage area 8 to the outside, making the process of filling the physiological saline into the tissue smoother.

[0032] In this embodiment, if Figures 7 to 10As shown, the interior of the seepage area 8 is a hollow structure, and the interior of the seepage area 8 is provided with a closing component, which is composed of a closing seat 16. The closing seat 16 is annularly sleeved inside the seepage area 8, and the exterior of the closing seat 16 is in contact with the inner side wall of the seepage area 8. A spring 17 is fixedly connected between the exterior of the closing seat 16 and the inner side wall of the seepage area 8. The exterior of the closing seat 16 is fixedly connected to a positioning tube 18 surrounding the outside of the spring 17. The positions of the output branch 15 and the input branch 14 in the seepage area 8 are symmetrical to each other, and the output branch 15 is connected to the circulation output end 13. The circulation output end 13 and the output branch 15 are connected from The interior of the water seepage area 8 is penetrated, and a limiting hole 19 that is adapted to the shape of the output branch 15 is opened on the closing seat 16. The closing seat 16 is sleeved on the outside of the output branch 15 through the limiting hole 19. The opening position of the limiting hole 19 is symmetrical to the connection position of the spring 17 and the positioning tube 18 on the outside of the closing seat 16. The sleeve relationship between the output branch 15 and the closing seat 16 forms a limit for the movement of the closing seat 16 inside the water seepage area 8. When the closing seat 16 is impacted by physiological saline and produces relative displacement with the water seepage area 8, it provides limit and guidance for the displacement of the closing seat 16, thereby ensuring the stability of the displacement activity of the closing seat 16 in the water seepage area 8.

[0033] In this embodiment, if Figures 2 to 9 As shown, the inner side of the closing seat 16 is symmetrically installed with partitions 21 distributed on both sides of the input branch 14. The two partitions 21 and the closing seat 16 form an impact zone corresponding to the position of the input branch 14. The outside of the closing seat 16 is also provided with symmetrically distributed through openings 20. The physiological saline entering the seepage area 8 through the water inlet branch can impact the impact zone formed by the closing seat 16 and the partition 21. The flow rate of the physiological saline can be controlled by adjusting the flow control valve 5, and then the impact force on the closing seat 16 can be controlled. In the stage of physiological saline filling into the tissue, a smaller flow rate is controlled by the flow control valve 5. At this time, the impact force on the closing seat 16 is also smaller, and its position is limited by the elastic force of the spring 17, and it will not form an obstruction to the seepage hole 9. The physiological saline output through the input branch 14 is It can pass through the through opening 20 on the closing seat 16 into the water seepage area 8, and then fill into the tissue through the water seepage hole 9 on the water seepage area 8. During the ablation stage of the transmitting antenna 10, the flow rate of the physiological saline is accelerated by the flow control valve 5. At this time, the closing seat 16 is subjected to a large impact force, moves inside the water seepage area 8, and compresses the spring 17 until the positioning tube 18 contacts the water seepage area 8 to limit the closing seat 16. At this time, the closing seat 16 forms a closure for the water seepage hole 9, and the physiological saline can no longer be filled into the tissue through the water seepage hole 9. Instead, it is injected into the cooling circulation pipe 11 through the circulation input end 12, transported in the cooling circulation pipe 11, and circulated through the return water branch to ensure the cooling work is carried out. The flow rate control is cleverly used to switch the working state of the ablation device.

[0034] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A microwave ablation device with water spray protection, comprising an integrated box and a needle rod, wherein the needle rod and the integrated box are fixedly connected, characterized in that: One end of the needle rod is inserted into the interior of the integrated box and fixedly connected to the adapter, and the other end of the needle rod extends to the outside of the integrated box and is provided with a needle head. A water seepage area is also provided between the needle head and the needle rod, and a transmitting antenna and a cooling circulation pipe are sleeved in the needle head. The two ends of the cooling circulation pipe are respectively provided with a circulation input end and a circulation output end, and the circulation input end and the circulation output end both extend into the interior of the water seepage area. A water outlet branch is provided between the adapter and the cooling circulation pipe, and a water inlet branch is provided between the adapter and the water seepage area. Evenly distributed water seepage holes are opened on the outside of the water seepage area, and a sealing component is also sleeved in the water seepage area. The water inlet branch is used to input physiological saline into the seepage area and the cooling circulation pipe, and the water inlet branch is connected to the adapter and the seepage area; The water outlet branch is used to recycle the saline solution after cooling, and is connected to the adapter and the cooling circulation pipe; The sealing component is used to seal the seepage holes after the physiological saline is filled into the tissue. The sealing component is sleeved in the seepage area.

2. The microwave ablation device with water spray protection according to claim 1, characterized in that: The transmitting antenna is fixedly connected to the middle position inside the needle, the cooling circulation tube is spirally wrapped around the outside of the transmitting antenna, and two connecting tubes are provided on the outside of the adapter. The ends of the two connecting tubes extend to the outside of the integrated box and are respectively connected to the cooling input tube and the cooling output tube.

3. The microwave ablation device with water spray protection according to claim 2, characterized in that: The water inlet branch includes one of the connecting pipes connected to the seepage area through the input branch pipe, which is connected to the cooling input pipe. A flow control valve is provided on the cooling input pipe, and the end of the input branch pipe away from the adapter is inserted into the inside of the seepage area.

4. The microwave ablation device with water spray protection according to claim 3, characterized in that: The water outlet branch includes another connecting pipe connected to the circulation output end through the output branch pipe, which is connected to the cooling output pipe. A pressure regulating device is provided on the cooling output pipe. The end of the output branch pipe away from the adapter is connected to the circulation output end.

5. The microwave ablation device with water spray protection according to claim 4, characterized in that: The positions of the output branch pipe and the input branch pipe in the water seepage area are symmetrical to each other, and the circulation output end and the output branch pipe pass through the interior of the water seepage area together.

6. The microwave ablation device with water spray protection according to claim 1, characterized in that: The two ends of the seepage hole opened on the seepage area are respectively a large end of the water hole and a small end of the water hole. The large end of the water hole is opened on the inner wall of the water seepage area, and the small end of the water hole is opened outside the water seepage area. The diameter of the large end of the water hole is larger than the diameter of the small end of the water hole, and the small end of the water hole is opened toward the position where the end of the transmitting antenna is located.

7. The microwave ablation device with water spray protection according to claim 6, characterized in that: The sealing component comprises a sealing seat sleeved inside the water seepage area. The sealing seat is annular, and the outer portion of the sealing seat is in contact with the inner side wall of the water seepage area.

8. The microwave ablation device with water spray protection according to claim 7, characterized in that: A spring is fixedly connected between the outside of the closing seat and the inner wall of the water seepage area. A positioning tube surrounding the outside of the spring is fixedly connected to the outside of the closing seat. When the positioning tube contacts the inner wall of the water seepage area, the position of the closing seat corresponds to the position of the water seepage hole.

9. The microwave ablation device with water spray protection according to claim 8, characterized in that: A limiting hole that matches the shape of the output branch pipe is opened on the closing seat. The closing seat is sleeved on the outside of the output branch pipe through the limiting hole. The opening position of the limiting hole is symmetrical to the connection position of the spring and the positioning tube outside the closing seat.

10. The microwave ablation device with water spray protection according to claim 9, characterized in that: The inner side of the closing seat is symmetrically installed with partitions distributed on both sides of the input branch pipe. The two partitions and the closing seat form an impact zone corresponding to the position of the input branch pipe. The outside of the closing seat is also provided with symmetrically distributed through openings.

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