Heating device and ablation gun

Abstract

The heating device comprises a container, a pipeline and a coil, a containing cavity is formed in the container, a first inlet and a first outlet are formed in the container, the first outlet is communicated with a steam channel of the ablation gun, and when the heating device works, a first partition above the liquid level and a second partition below the liquid level are formed in the containing cavity from top to bottom; the first outlet is directly communicated with the first subarea, the pipeline is arranged in the containing cavity and provided with a second inlet communicated with the first inlet and a second outlet located in the second subarea, the pipeline is at least partially located in the first subarea, and the coil is wound around the periphery of the pipeline and connected with a high-frequency inverter power source outside the container. Through cooperation of the pipeline and the coil, liquid in the pipeline is electromagnetically heated, steam discharged to the containing cavity is generated, meanwhile, the steam in the containing cavity is secondarily heated through radio frequency energy of the outer surface of the pipeline and the coil, water drops carried by the steam are reduced, and therefore stable high-temperature steam is rapidly generated, the targeted therapy requirement of an ablation gun is met, and the therapy effect is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a heating device and an ablation gun. Background Technology

[0002] Benign prostatic hyperplasia (BPH) generally occurs after age 40. The incidence of BPH in men aged 60 is greater than 50%, reaching as high as 83% by age 80. Based on this, it is estimated that there are 84 million BPH patients in my country. Traditional transurethral resection of the prostate (TURP) is an invasive surgery widely used since the 1920s. Currently, electrocautery and laser resection are commonly used. However, these methods, due to the complete removal of the gland and the tissue damage during the procedure, can lead to other problems for many patients, such as loss of sexual function, severely impacting their quality of life.

[0003] To address this, existing technology proposes an ablation gun that utilizes steam for ablation therapy. This device precisely releases steam heat at the target tissue via an interventional approach for ablation. Due to the excellent tissue penetration and convection properties of steam water molecules, it can treat solid tumors, cancers, and lesions in the human body. It is particularly effective for ablating excess prostate tissue, reducing its size and alleviating pressure on the urethra, thus resolving benign prostatic hyperplasia (BPH). The core of this ablation gun is its internal heating device, which heats sterile water, saline solution, or other medical liquids to generate high-temperature steam before outputting it.

[0004] However, most existing ablation guns use a single heating method, resulting in low heating efficiency and significant thermal inertia. This can cause steam temperature overshoot or large fluctuations, negatively impacting treatment effectiveness. Furthermore, the heating devices lack measures to reduce the liquid content of the steam, leading to the generation of steam that easily carries a large number of water droplets. When these water droplets are sprayed onto human tissue, they can cause localized low-temperature burns or lower the ablation temperature at the target site. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the main objective of the present invention is to provide a heating device and ablation gun that can improve heating efficiency, improve temperature overshoot or large fluctuations, reduce water droplets mixed in steam, and improve treatment effect.

[0006] To achieve the above objectives, the present invention provides a heating device for an ablation gun, the heating device comprising:

[0007] The container has a cavity and a first inlet and a first outlet that connect the cavity. The first outlet is used to connect to the steam channel of the ablation gun. When the heating device is working, a first partition and a second partition are formed in the cavity from top to bottom. The first partition is used to contain steam and the second partition is used to contain liquid. The first outlet is directly connected to the first partition.

[0008] A conduit, disposed within the cavity, is made of a magnetically conductive material and has a second inlet and a second outlet, the second inlet being connected to the first inlet, the conduit being at least partially located in the first partition, and the second outlet being located in the first partition; and,

[0009] A coil is wound around the outer periphery of the pipe, and at least the outer surface of the coil in contact with the pipe is covered with an insulating and waterproof layer. The coil is used to connect to a high-frequency inverter power supply outside the container.

[0010] Optionally, the pipeline is located partly in the first partition and partly in the second partition.

[0011] Optionally, the pipeline includes a first pipe segment adjacent to the second inlet and a second pipe segment adjacent to the second outlet. The first pipe segment extends horizontally, with the upper half of the first pipe segment located in the first partition and the lower half of the first pipe segment located in the second partition. The second pipe segment extends upward from the first pipe segment to the first partition, and the length of the first pipe segment is greater than that of the second pipe segment.

[0012] Optionally, the first outlet is located at the top of the container, and / or the first inlet is located on the side of the container.

[0013] Optionally, the container includes a first sidewall and a second sidewall disposed opposite to each other in a first direction, with the first outlet relatively close to the first sidewall and the second outlet relatively close to the second sidewall.

[0014] Optionally, the pipe is bent within the cavity, forming a first bend and a second bend arranged side by side and adjacent to each other. The first bend and the second bend extend in a second direction, and the coil wound around the first bend has the opposite winding direction to the coil wound around the second bend.

[0015] Optionally, multiple first bending segments and multiple second bending segments are provided, and the multiple first bending segments and multiple second bending segments are arranged alternately along a first direction, and a gap is defined between each first bending segment and each second bending segment adjacent in the first direction.

[0016] The container includes a third sidewall and a fourth sidewall arranged opposite to each other in a second direction. The third sidewall and the fourth sidewall are respectively provided with a plurality of guide plates protruding into the cavity. The plurality of guide plates are inserted into a plurality of gaps in a one-to-one correspondence. The upper end of the guide plate extends to the top of the cavity, and the lower end of the guide plate extends at least to the second partition. The first outlet is located between the third sidewall and the guide plate closest to the third sidewall, and the second outlet is located between the fourth sidewall and the guide plate closest to the fourth sidewall.

[0017] Optionally, the guide plate has a micro-protrusion structure integrally formed on the outer surface of the first partition for adsorbing liquid in the fluid.

[0018] Optionally, a liquid level sensor is also provided in the cavity, and the heating device further includes a controller. The controller is electrically connected to the liquid level sensor and the high-frequency inverter power supply, and is used to control the high-frequency inverter power supply to start supplying power when the liquid level sensor detects that the liquid level in the cavity has reached the adjacent area between the first partition and the second partition.

[0019] To achieve the above objectives, the present invention proposes an ablation gun, comprising:

[0020] chassis;

[0021] A heating device, disposed within the housing, wherein the heating device is the heating device described above; and...

[0022] A puncture needle, mounted on the housing, has a travel that extends and moves relative to or away from the housing. A steam channel is formed in the puncture needle, and the steam channel is connected to the first outlet of the heating device.

[0023] The technical solution provided by this invention has the following beneficial effects:

[0024] This invention provides a heating device and an ablation gun. The heating device includes a container, a pipe, and a coil. The container has a cavity and a first inlet and a first outlet. The first outlet is connected to the steam channel of the ablation gun. When the heating device is working, a first section above the liquid surface and a second section below the liquid surface are formed in the cavity from top to bottom. The first outlet is directly connected to the first section. The pipe is disposed in the cavity and has a second inlet connected to the first inlet and a second outlet located in the second section. The pipe is at least partially located in the first section. The coil is wound around the outer periphery of the pipe and connected to a high-frequency inverter power supply outside the container.

[0025] In the embodiments provided by this invention, the magnetically conductive pipe and the coil work together to form a highly efficient electromagnetic heating circuit. A high-frequency inverter power supply powers the coil, generating a strong alternating magnetic field. The pipe rapidly induces eddy currents in the magnetic field and directly generates heat. This heat does not require an intermediate medium and can directly act on the medical liquid within the pipe, electromagnetically heating it and generating steam that exits into the cavity. The steam accumulates in the first section of the cavity, and the thermal radiation from the outer surface of the pipe reheats the steam within the cavity, reducing water droplet entrainment and thus delivering stable, high-temperature steam from the first outlet to the steam channel in the puncture needle. On one hand, this composite heating method reduces the thermal inertia caused by a single heating method, improving the situation of steam temperature overshoot or large fluctuations. On the other hand, it effectively prevents localized low-temperature burns caused by water droplets being sprayed onto human tissue with the steam, while ensuring that the ablation temperature at the targeted lesion site remains stable within the effective range, thus improving the ablation treatment effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment of the ablation gun provided by the present invention;

[0028] Figure 2 for Figure 1 A three-dimensional structural diagram of the ablation gun, with part of the casing not shown;

[0029] Figure 3 for Figure 2 A three-dimensional structural diagram of the heating device;

[0030] Figure 4 for Figure 3 Exploded view of the three-dimensional structure of the heating device;

[0031] Figure 5 for Figure 4 A schematic diagram of the assembly of the central pipe and coil;

[0032] Figure 6 for Figure 2 Side view of the heating device;

[0033] Figure 7 for Figure 6 Sectional view at point AA;

[0034] Figure 8 for Figure 2 Top view of the heating device;

[0035] Figure 9 for Figure 8 Sectional view at point BB;

[0036] Figure 10 for Figure 1 A three-dimensional exploded view of the steam therapy handpiece;

[0037] Figure 11 for Figure 10 An enlarged schematic diagram at point B, where the puncture needle is in the retracted position and the locking mechanism is in the locked state;

[0038] Figure 12 for Figure 10 An enlarged diagram of point B, where the puncture needle is in the ejected position and the locking mechanism is in the unlocked state;

[0039] Figure 13 for Figure 10 A three-dimensional structural diagram of the first casing;

[0040] Figure 14 for Figure 10 A three-dimensional structural diagram of the second casing.

[0041] Explanation of icon numbers:

[0042] 1000-Ablation gun; 100-Housing; 200-Heating device; 10-Container; 11-Cavity; 111-First section; 112-Second section; 12-First inlet; 121-First pipeline; 13-First outlet; 131-Second pipeline; 14-First sidewall; 15-Second sidewall; 16-Third sidewall; 17-Fourth sidewall; 20-Pipeline; 21-Second inlet; 22-Second outlet; 23-First pipe section; 24-Second pipe section; 25-First bend section; 26-Second bend section; 27-Gap; 30-Coil; 31-Wire; 40-Guide plate; 41-Micro-convex junction Structure; 50-Liquid level sensor; 60-Liquid surface; 300-Catheter assembly; 310-Puncture needle; 320-Catheter; 400-Ejection mechanism; 410-First transmission component; 411-First elastic component; 412-First locking hook; 413-Rotating shaft; 414-First arm; 415-Second arm; 420-Second transmission component; 421-Second elastic component; 422-Second operating part; 423-Body; 4231-Guide block; 4232-Slot; 425-Second locking hook; 500-Locking mechanism; 510-Knob; 511-Second protruding structure; 520-Stop; 600-Safety pin assembly.

[0043] The realization of the objective of this invention, its functional characteristics and excellent effects will be further explained below in conjunction with specific embodiments and accompanying drawings. Detailed Implementation

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

[0045] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0046] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0047] like Figure 1 and Figure 2As shown, this embodiment provides an ablation gun 1000, which is mainly used for minimally invasive ablation treatment of human lesions such as benign prostatic hyperplasia. It includes a housing 100, a heating device 200, and a puncture needle 310. The housing 100 serves as the overall support structure of the ablation gun 1000, and has an internal mounting cavity for mounting the heating device 200 and an ejection mechanism 400 for driving the movement of the puncture needle 310. A conduit assembly 300 is also provided at the front end of the housing 100, including a conduit 320 and a puncture needle 310 inserted therein. The puncture needle 310 can be ejected relative to the conduit 320, thus having a stroke that allows it to move relatively closer to or further away from the housing 100. A steam channel is formed within the puncture needle 310. Specifically, the conduit 320 is installed at the front end of the housing 100 and extends in the front-rear direction. The puncture needle 310 is slidably installed in the conduit 320, thus having a travel relative to or away from the housing 100. A steam channel is formed inside the puncture needle 310. Under the action of the ejection mechanism 400, the puncture needle 310 has an ejected position with its front end extending out of the conduit 320 and a retracted position within the conduit 320.

[0048] The heating device 200 can be fixed to the housing 100 by screws or clips to stably generate high-temperature steam to meet the needs of ablation therapy. The heating device 200 is connected to the steam channel of the puncture needle 310. When the puncture needle 310 punctures human tissue and reaches the lesion site, the high-temperature steam generated by the heating device 200 can be precisely delivered to the lesion site through the steam channel. In practical applications, the actuation method of the puncture needle 310 can be selected according to requirements, such as using a manually triggered spring ejection mechanism 400 or an electrically controlled linear motor drive mechanism.

[0049] Please continue reading. Figures 2 to 9 The present invention also provides a heating device 200 for an ablation gun 1000, the heating device 200 including a container 10, a pipe 20, and a coil 30. The container 10 is a sealed structure with a certain strength, and its interior forms a cavity 11 for containing medical liquid and generated steam. The medical liquid can be sterile water, physiological saline, or other media suitable for ablation treatment. In this embodiment, considering safety and protection of the heating device 200, sterile water is used as the medical liquid. The container 10 has a first inlet 12 and a first outlet 13 communicating with the cavity 11. The first inlet 12 is connected to a water supply device via a first pipe 121, and the first outlet 13 is used to connect to the steam channel of the ablation gun 1000 via a high-temperature resistant second pipe 131 to deliver the generated steam to the ablation gun 1000.

[0050] The pipe 20 has a second inlet 21 and a second outlet 22. The second inlet 21 is connected to the first inlet 12 of the container 10 via a pipe 20 connector, allowing externally transported medical liquid to enter the pipe 20 through the first inlet 12 and the second inlet 21. The second outlet 22 is located within the cavity 11, allowing the fluid (a mixture of water and steam) formed after being heated by the pipe 20 to be injected into the cavity 11. The pipe 20 is made of a magnetically conductive material, that is, a material that can both conduct electricity and generate eddy currents in an alternating magnetic field, such as 304 stainless steel or ferritic stainless steel. This type of material can efficiently generate heat by inducing eddy currents in an alternating magnetic field. Figure 5 As shown, coil 30 is wound around the outer circumference of pipe 20. Coil 30 is preferably made of nickel-chromium alloy or iron-chromium-aluminum alloy. Its outer surface, at least at the surface in contact with pipe 20, is covered with an insulating and waterproof layer, which can be made of polytetrafluoroethylene (PTFE). This effectively isolates pipe 20 from coil 30, preventing short circuits or leakage due to contact with pipe 20, and also allows it to withstand the high temperatures during steam generation. Both ends of coil 30 extend to the outside of container 10 via wires 31 for connection to an external high-frequency inverter power supply. The high-frequency inverter power supply provides high-frequency alternating current to coil 30, causing it to generate a strong alternating magnetic field. Pipe 20 rapidly induces eddy currents in the magnetic field and directly generates heat. This heat does not require intermediate medium transfer and can directly act on the medical liquid inside pipe 20, causing it to be electromagnetically heated and rapidly generate steam that is discharged into container 11.

[0051] When the heating device 200 is working, such as Figure 9As shown, a liquid surface 60 forms within the cavity 11 due to the liquid flowing in from the pipe 20. It is understood that in actual use, this liquid surface 60 may fluctuate within a certain range. In this embodiment, the liquid surface 60 is assumed to be the position of the water surface within the cavity 11 when the ablation gun 1000 is in a positive, stationary state. The area above the liquid surface 60 is the first partition 111, used to contain steam, and the area below the liquid surface 60 is the second partition 112, used to contain unevaporated liquid. The first outlet 13 of the pipe 20 is directly connected to the first partition 111, ensuring that steam can be discharged directly without passing through the liquid. The second outlet 22 of the pipe 20 is located in the first partition 111, ensuring that steam generated by heating the liquid within the pipe 20 can be directly discharged into the first partition 111. Simultaneously, the pipe 20 is at least partially located in the first partition 111, that is, wholly or partially located in the first partition 111, so that the outer surface of the pipe 20 can contact the steam within the first partition 111, providing secondary heating to the steam through thermal radiation. In addition, coil 30 can also generate a certain amount of radiofrequency energy, which also plays a secondary heating role on the liquid in cavity 10. This secondary heating reduces the liquid content of the vapor in the second section 112, resulting in less liquid vapor and a more stable temperature in the vapor channel supplied from the first outlet 13 to the puncture needle 310. Furthermore, the synergistic use of electromagnetic heating, thermal radiation heat exchange, and radiofrequency heating efficiently heats and generates vapor while avoiding the large thermal inertia associated with a single heating method, which could cause excessive temperature surges or fluctuations in the vapor, thus improving the ablation treatment effect.

[0052] In this embodiment, the magnetically conductive pipe 20, in conjunction with the coil 30 wound around its outer periphery and an external high-frequency inverter power supply, forms a highly efficient electromagnetic heating circuit. The high-frequency alternating current causes the coil 30 to generate a strong alternating magnetic field. The pipe 20 induces eddy currents in the magnetic field, directly generating heat. The heat does not need to be transferred through an intermediate medium and can directly act on the medical liquid inside the pipe 20, resulting in high heating efficiency and rapid steam generation. The design of the first section 111 and the second section 112 of the cavity 11, combined with the structure where the second outlet 22 is located in the first section 111 and the first outlet 13 is directly connected to the first section 111, allows the steam inside the cavity 11 to be reheated through the outer surface of the pipe 20, reducing the amount of water droplets entrained in the steam and forming steam with lower liquid content and a more stable temperature that is discharged from the first outlet 13. The heating device 200 provided in this embodiment can supply steam with lower liquid content to the puncture needle 310 more efficiently and stably, effectively preventing local low-temperature burns caused by water droplets being sprayed onto human tissue with the steam, while ensuring that the ablation temperature of the targeted lesion site remains stable within the effective range, avoiding the impact of temperature fluctuations on the treatment effect.

[0053] Based on the previous embodiment, preferably, please refer to Figures 6 to 9The pipe 20 is partially located in the first zone 111 and partially in the second zone 112. This arrangement allows the pipe 20 to heat the internal liquid through its submerged portion and to contact the steam through its portion in the steam. The submerged portion of the pipe 20 is continuously cooled by the liquid, avoiding the risk of dry burning due to localized overheating and improving the safety of the heating device 200. In practical applications, the proportion of the pipe 20 submerged in the second zone 112 can be adjusted according to the heating power requirements, for example, by submerging 1 / 3 or 1 / 2 of the pipe 20 in the liquid. The partial location of the pipe 20 in the first zone 111 ensures secondary heating of the steam through its outer surface, maintaining a low liquid content in the steam within the second zone 112. This design, while ensuring efficient heating and dry steam output, also adds a safety guarantee against dry burning, further enhancing the reliability of the heating device 200.

[0054] Furthermore, please continue to refer to [the relevant sources]. Figure 4 The pipe 20 includes a first pipe section 23 adjacent to the second inlet 21 and a second pipe section 24 adjacent to the second outlet 22. The first pipe section 23 extends horizontally and is relatively long, with its upper half located in the first partition 111 and its lower half immersed in the liquid in the second partition 112. This horizontally extended structure increases the contact area between the first pipe section 23 and the liquid and steam. The second pipe section 24 extends upward from the end of the first pipe section 23 to the first partition 111 and is relatively short, with the second outlet 22 located at the top of the second pipe section 24 within the first partition 111. The length ratio of the first pipe section 23 to the second pipe section 24 can be selected according to the heating efficiency requirements. A larger ratio results in a longer immersion length of the first pipe section 23 in the liquid, leading to better protection against localized high temperatures. Preferably, the length ratio of the first pipe section 23 to the second pipe section 24 is greater than or equal to 2, and most preferably greater than or equal to 5, thus ensuring that the length of the first pipe section 23 is significantly greater than that of the second pipe section 24. In practical applications, the horizontal extension direction of the first pipe segment 23 can be adjusted according to the shape of the cavity 11, for example, extending along the length or width of the cavity 11. It is preferable to use a serpentine method with multiple bends to extend the first pipe segment 23 as much as possible.

[0055] In this embodiment, the design of the first pipe section 23 extending horizontally with its upper half located in the first partition 111 and its lower half located in the second partition 112 allows for efficient heating of the liquid through its lower half and sufficient contact with the steam through its upper half, achieving secondary heating of the steam. The design of the second pipe section 24 extending upwards to the first partition 111 ensures that the second outlet 22 is reliably located in the first partition 111, guaranteeing that the steam generated in the pipe 20 is directly discharged into the first partition 111, reducing contact with the liquid. In other words, this embodiment improves the sufficiency of secondary steam heating while reducing the risk of localized overheating in the pipe 20, ensuring the long-term stable operation of the heating device 200.

[0056] For further information, please refer to [link / reference]. Figure 4 Preferably, the first outlet 13 is located at the top of the container 10, and / or the first inlet 12 is located on the side of the container 10. Specifically, since steam has the characteristic of flowing upwards, the first outlet 13 at the top can follow the natural flow direction of steam, reduce the retention of steam in the cavity 11, and prevent steam from re-contacting the liquid and carrying water droplets due to excessive retention time. The first inlet 12 is located on the side of the container 10, which can ensure that the first pipe section 23 extends in the horizontal direction. In addition, a one-way valve can be provided at the first inlet 12 to prevent liquid or steam in the cavity 11 from flowing back from the pipe 20. The first outlet 13 can also be located on the side wall of the top of the container 10, rather than at the top center. This location design can also follow the characteristic of steam flowing upwards and facilitates connection with the steam channel of the ablation gun 1000.

[0057] Please continue reading. Figures 6 to 9 The container 10 includes a first sidewall 14 and a second sidewall 15 that are arranged opposite to each other in a first direction. That is, the first sidewall 14 and the second sidewall 15 are two opposite sidewalls of the container 10 in the horizontal direction. For example, when the container 10 is a cuboid, the front and rear sidewalls or the left and right sidewalls can be used as the first sidewall 14 and the second sidewall 15 respectively.

[0058] It should be noted that in this embodiment, both the first and second directions are horizontal, intersecting each other, and preferably perpendicular to each other. Furthermore, this directional description applies to the case where the ablation gun 1000 is stationary and fixed in a conventional posture.

[0059] The first outlet 13 is located near the first sidewall 14, and the second outlet 22 is located near the second sidewall 15. This ensures that steam exiting from the second outlet 22 must travel a longer path from the second sidewall 15 to the first sidewall 14 before reaching the first outlet 13 for discharge. In a preferred embodiment, the first outlet 13 and the second outlet 22 can be located diagonally opposite each other within the cavity 11, i.e., at the two corners with the greatest straight-line distance.

[0060] In this embodiment, by placing the first outlet 13 and the second outlet 22 near the first sidewall 14 and the second sidewall 15, respectively, which are opposite in the first direction, the flow path of steam within the cavity 11 is extended. This allows the steam to have more time to contact the outer surface of the pipe 20 located in the first partition 111 during its flow from the second outlet 22 to the first outlet 13, receiving secondary heating and further evaporating the tiny water droplets carried in the steam. The extended steam flow path also allows the water droplets in the steam to settle naturally due to gravity, reducing the number of water droplets discharged with the steam. In other words, the precise placement of the first outlet 13 and the second outlet 22 enhances the sufficiency of secondary steam heating and the water droplet settling effect, further reducing the liquid content of the steam.

[0061] Please refer to the following: Figure 3 and Figure 7 The pipe 20 is bent within the cavity 11, forming a first bent section 25 and a second bent section 26 arranged side-by-side and adjacent to each other. The first bent section 25 and the second bent section 26 extend along a second direction, and the coil 30 wound around the first bent section 25 and the coil 30 wound around the second bent section 26 have opposite winding directions. Multiple first bent sections and multiple second bent sections can be designed, and they are alternately arranged in the first direction and interconnected through the bent pipe 20.

[0062] In this embodiment, the pipe 20 extends along the second direction through a first bend 25 and a second bend 26, which are side-by-side and adjacent to each other. This increases the total length of the pipe 20 within the limited cavity 11, thereby increasing the contact area with liquids and steam. The coils 30 are wound in opposite directions, meaning that when the coil 30 wound around the first bend 25 is clockwise, the coil 30 wound around the second bend 26 is counterclockwise, and vice versa. This winding design improves the magnetic field interference between adjacent coils 30, preventing uneven current distribution and increased energy loss.

[0063] Optionally, please continue to refer to [the relevant literature / reference]. Figure 4 and Figure 6 and Figure 7The container 10 has multiple first bending segments 25 and multiple second bending segments 26, which are arranged alternately along a first direction. A gap 27 is defined between each adjacent first bending segment 25 and each adjacent second bending segment 26 in the first direction. The container 10 includes a third sidewall 16 and a fourth sidewall 17 arranged opposite each other in a second direction. Multiple guide plates 40 protrude into the cavity 11 from the third sidewall 16 and the fourth sidewall 17, and are inserted into the gaps 27 one-to-one. The upper end of each guide plate 40 extends to the top of the cavity 11, and the lower end of each guide plate 40 extends at least to the second partition 112. The guide plates 40 can be made of the same material as the container 10 to ensure structural strength and high-temperature resistance. Preferably, they are integrally formed with the container 10 or welded inside the container 10. The first outlet 13 is located between the third side wall 16 and the guide plate 40 closest to the third side wall 16, and the second outlet 22 is located between the fourth side wall 17 and the guide plate 40 closest to the fourth side wall 17.

[0064] Specifically, multiple first bends 25 and second bends 26 are arranged alternately along the first direction to form a serpentine pipe structure 20, with gaps 27 between adjacent bends. The third sidewall 16 and fourth sidewall 17 are two opposing sidewalls of the container 10 in the second direction. Guide plates 40, protruding from both sides into the cavity 11, are inserted into the gaps 27, extending vertically to the top of the cavity 11 and the second partition 112, thus orderly dividing the cavity 11 and guiding the flow of steam discharged from the second outlet 22 within the cavity 11. Specifically, after steam is discharged from the second outlet 22, it must be obstructed by the guide plates 40 and flow serpentinely along the path from the second outlet 22 to the first outlet 13 of the pipe 20, ultimately reaching the first outlet 13 for discharge. During this flow, it passes through the outer surfaces of almost all bends. Finally, during the flow, the secondary heating function of the pipe 20 gradually reduces water droplets in the steam, minimizing the liquid content of the steam output from the first outlet 13. To prevent the steam from flowing randomly within the cavity 11, which would cause the liquid content of the steam output from the first outlet 13 to fluctuate.

[0065] In this embodiment, the design of the guide plate 40 with the gap 27 forces the steam to flow along a serpentine path, and during the flow, it passes through the outer surface of almost all the bends, so that the steam can fully contact the outer surface of the pipe 20 and receive secondary heating, maximizing the evaporation of water droplets in the steam.

[0066] In a preferred embodiment, the guide plate 40 has an integrally formed micro-protrusion structure 41 on the outer surface of the first partition 111 for adsorbing liquid in the fluid. The micro-protrusion structure 41 refers to a protrusion or depression structure with a size in the micrometer range, such as a strip-shaped guide microchannel, a hemispherical micro-protrusion array, or a honeycomb-shaped micro-depression. Specifically, the strip-shaped guide microchannel extends along the steam flow direction and is inclined downward in the extension direction. Such a microchannel can adsorb water droplets and guide the water droplets to flow towards the second partition 112. The hemispherical micro-protrusion array can increase the contact area between the guide plate 40 and the steam, adsorbing water droplets through surface tension. The honeycomb-shaped micro-depression can adsorb tiny water droplets, preventing water droplets from being entrained by the steam. Preferably, a hydrophobic coating can be sprayed onto the surface of the micro-protrusion structure 41 to further improve the adsorption and guiding effect of water droplets.

[0067] In this embodiment, the micro-protrusion structure 41 on the outer surface of the guide plate 40 increases the contact area with steam, efficiently adsorbing tiny water droplets in the steam that have not been evaporated by secondary heating, thus preventing these droplets from flowing with the steam to the first outlet 13. The water droplets adsorbed by the micro-protrusion structure 41 will flow along the guide plate 40 to the second section 112 under gravity, returning to the liquid and achieving liquid recycling. This further captures tiny water droplets in the steam, further reducing the liquid content of the steam, ensuring that the steam finally delivered to the ablation gun 1000 is high-quality steam with low liquid content, completely avoiding tissue burns caused by water droplets.

[0068] A liquid level sensor 50 is also installed inside the cavity 11. The heating device 200 also includes a controller, which is electrically connected to the liquid level sensor 50 and the high-frequency inverter power supply. The controller is used to control the high-frequency inverter power supply to start supplying power when the liquid level sensor 50 detects that the liquid level in the cavity 11 has reached the adjacent position of the first partition 111 and the second partition 112. The liquid level sensor 50 is installed on the side wall of the cavity 11, and its detection position corresponds to the adjacent position of the first partition 111 and the second partition 112 (i.e., the liquid surface 60 position), and is used to detect the liquid level height in the cavity 11 in real time. The controller is a circuit board with signal processing and control functions, which can be integrated into the mounting cavity of the ablation gun 1000. It receives the detection signal from the liquid level sensor 50 and controls the start and stop of the high-frequency inverter power supply according to the signal.

[0069] When the liquid level in the cavity 11 is lower than the adjacent level, the controller controls the high-frequency inverter to stop supplying power to prevent the pipe 20 from drying out due to lack of liquid contact. When external liquid is injected into the cavity 11 through the first inlet 12 and the second inlet 21, and the liquid level rises to the adjacent level, the liquid level sensor 50 sends a normal liquid level signal to the controller. The controller then controls the high-frequency inverter to start supplying power, and the coil 30 generates an alternating magnetic field, causing eddy currents to be induced in the pipe 20, generating heat. In a preferred embodiment, the controller can also add an overheat protection function. When the liquid level is detected to be lower than the preset liquid level 60, the controller controls the high-frequency inverter to stop supplying power, further improving safety.

[0070] This embodiment, through the linkage control of the liquid level sensor 50 and the controller, ensures that the high-frequency inverter power supply only starts to supply power when the liquid level reaches the adjacent point and the pipe 20 is partially submerged in liquid. This fundamentally avoids the pipe 20 from burning dry, protects the pipe 20 and the coil 30 from damage, and extends the service life of the heating device 200.

[0071] In this embodiment, as Figure 2 , Figures 10 to 14 As shown, the ablation gun 1000 also includes an ejection mechanism 400, a locking mechanism 500, and a safety pin mechanism 600.

[0072] During treatment, the operator can trigger the ejection mechanism 400 to eject the puncture needle 310, which then intervenes in the human tissue for ablation treatment. After treatment, the puncture needle 310 can also be retracted by operating the ejection mechanism 400. However, in some special circumstances, the ejection mechanism 400 may malfunction, preventing the puncture needle 310 from being successfully removed. Therefore, this invention also provides a corresponding safety pin assembly 600.

[0073] Specifically, the front end of the housing 100 has an installation port 140. The safety pin assembly 600 includes a plug and a locking pin. The plug is detachably installed in the housing 100 and seals the installation port 140. The plug is fixedly connected to the conduit 320. The puncture needle 310 is slidably inserted into the plug in the front-rear direction. The locking pin is inserted into the plug from the outside of the housing 100 to fix the plug and the housing 100 in a fixed connection.

[0074] Specifically, the housing 100 includes a first housing 101 and a second housing 102, which are arranged side by side in a transverse direction and together enclose an installation cavity 110. After the first housing 101 and the second housing 102 are enclosed, the front end forms an installation port 140 communicating with the installation cavity 110. A plug seals the installation port, and the rear end of the guide tube 320 is inserted and fixed to the plug, so that the rear end of the puncture needle 310 passes through the plug and extends into the installation cavity 110. It can be understood that the puncture needle 310 is slidable in the front-back direction relative to the guide tube 320 and the plug, and the rear end of the puncture needle 310 is driven and engaged with the ejection mechanism 400, so that it can switch between the ejected position and the retracted position relative to the guide tube 320. The plug is preferably made of elastic materials such as rubber or silicone, and is interference-fitted with the installation port 140 to improve the sealing of the installation port 140, and is provided with a locking pin engagement, locking groove, and other structures. The end of the locking pin can be equipped with anti-loosening structures such as cotter pins or elastic retaining rings to prevent the locking pin from accidentally falling off.

[0075] In this embodiment, if an unexpected event occurs, such as a malfunction of the ejection mechanism 400, preventing the puncture needle 310 from being properly withdrawn through the operation of the ablation gun 1000, the operator can pull out the locking pin, causing the ablation gun 1000 to be divided into two separable parts. One part includes a plug and a conduit 320 fixed to the plug, while the other part includes the puncture needle 310, the housing 100, and other structures such as the heating device 200 and the ejection mechanism 400 disposed within the housing 100. In this case, the user can fix the plug and then pull the housing 100 backward relative to the plug, causing the puncture needle 310 to move backward relative to the conduit 320, thus allowing it to be smoothly withdrawn from the human tissue. Compared to directly pulling the handle backward, the puncture needle 310, guided by the conduit 320, can accurately leave the body along the intervention direction, minimizing damage to the human body.

[0076] The present invention also provides an ejection mechanism 400 and a locking mechanism 500 that cooperate with the puncture needle 310. For example... Figures 11 to 14 As shown, a first operating part 101 is provided on the housing 100, and an ejection mechanism 400 is disposed in the housing 100, including a first transmission member 410 and a second transmission member 420. The first transmission member 410 is movably mounted on the housing 100 by means of pivoting or sliding, and the second transmission member 420 is fixedly disposed at the rear end of the puncture needle 310 and moves synchronously with the puncture needle 310. The first operating part 101 on the housing 100 is connected to the puncture needle 310 through the ejection mechanism 400. It can be configured as a button or similar structure. When the first operating part 101 is triggered, it directly or indirectly drives the first transmission member 410 to generate a movement stroke relative to the housing 100. During this movement stroke, the first transmission member 410 triggers the second transmission member 420 by means of contact or separation, causing the puncture needle 310 to quickly switch from the retracted position to the ejected position.

[0077] A locking mechanism 500 is mounted on the housing 100 to prevent the ejection mechanism 400 from being accidentally triggered. It has a locked position and an unlocked position. When the locking mechanism 500 is in the locked position, it mechanically limits the first transmission member 410, preventing it from moving relative to the housing 100 and thus preventing the second transmission member 420 from being triggered, ensuring the puncture needle 310 remains in the retracted position. Conversely, when the locking mechanism 500 switches to the unlocked position, it releases the mechanical limit on the first transmission member 410. At this time, operating the first operating unit 101 can drive the first transmission member 410 to move, thereby triggering the second transmission member 420 and quickly ejecting the puncture needle 310 from the catheter 320.

[0078] In practical applications, the movement of the ejection mechanism 400 can be designed according to needs. For example, the first transmission member 410 can be rotated, moving closer to or further away from the second transmission member 420 to launch the ejection mechanism 400. Alternatively, the first transmission member 410 can be linearly slidable, triggering the mechanism through forward and backward sliding. The locking mechanism 500 can also take various forms, such as a knob 510, a button, or a pull-out pin, as long as it can limit and unlock the first transmission member 410.

[0079] This embodiment, by setting the locking mechanism 500 and the ejection mechanism 400 in coordination, avoids the accidental ejection of the puncture needle 310 from the mechanical structure, solves the safety hazard of the existing ablation gun 1000 causing the puncture needle 310 to be accidentally ejected due to misoperation, and greatly improves the safety of the ablation gun 1000.

[0080] Please continue reading. Figures 11 to 14 In one embodiment, the locking mechanism 500 includes a knob 510 and a stop 520. The knob 510 is mounted on the housing 100 in an adjustable rotational manner, specifically, it is mounted on the housing 100 in a rotational manner and can be restricted to a specific position during its rotational stroke. Specifically, part of the structure of the knob 510 is located outside the housing 100, forming an operating end that is easy for the operator to hold and rotate. The operating end may be provided with a handle structure to improve the user's grip and operational stability. Preferably, the operating end is also provided with an indicator to indicate to the user that the locking mechanism 500 is in a locked or unlocked state.

[0081] Another part of the knob 510 is located inside the housing 100, and the stop block 520 is fixedly mounted on this internal part, rotating synchronously with the knob 510. When the locking mechanism 500 is in the locked position, rotating the knob 510 causes the stop block 520 to rotate into the movement path of the first transmission member 410 relative to the housing 100. At this time, the first transmission member 410 is blocked by the stop block 520 and cannot generate the preset movement stroke, thus preventing the second transmission member 420 from being triggered. The puncture needle 310 remains in the retracted state, effectively preventing accidental triggering. When unlocking is required, rotating the knob 510 causes the stop block 520 to rotate, causing the stop block 520 to avoid the movement path of the first transmission member 410, releasing the restriction on the first transmission member 410. At this time, operating the first operating part 101 can drive the first transmission member 410 to move, triggering the second transmission member 420, causing the puncture needle 310 to switch to the ejected state. The shape, size, and range of motion of the stop block 520 can be adjusted according to the first transmission member 410, as long as it can reliably block the movement of the first transmission member 410.

[0082] In this embodiment, the locking mechanism 500 adopts a combination structure of knob 510 and stop 520, which is simple and compact, easy to integrate into the housing 100, and does not occupy too much extra space. The stop 520 acts directly on the movement path of the first transmission member 410, and the limiting method is direct and reliable, which can effectively prevent the accidental movement of the first transmission member 410.

[0083] Furthermore, please refer to the following: Figure 13 and Figure 14 The housing 100 has an installation channel 120, and the inner wall of the installation channel 120 has a first protrusion structure 121. The knob 510 passes through the installation channel 120, and the outer periphery of the knob 510 has a second protrusion structure 511 corresponding to the first protrusion structure 121. Specifically, the installation channel 120 can be a through hole opened inside the housing 100, and its axis coincides with the rotation axis of the knob 510. The first protrusion structure 121 and the second protrusion structure 511 can each be set as multiple integrally formed ribs, and distributed circumferentially. Interference between the first protrusion and the second protrusion means that they come into contact and abut against each other during the rotation of the knob 510, so that the housing 100 limits the rotation of the knob 510, thereby limiting and fixing the knob 510 at least in the locked position and the unlocked position. Preferably, the knob 510 is made of elastic materials such as silicone or rubber to further enhance the friction between it and the housing 100, and to prevent it from rotating unexpectedly relative to the housing 100, which could lead to locking failure.

[0084] When the knob 510 is rotated to the locked position, the second protruding structure 511 interferes with the first protruding structure 121, preventing the knob 510 from rotating further. At this time, the stop block 520 is precisely located in the movement path of the first transmission member 410, thus mechanically limiting the first transmission member 410. Conversely, when the knob 510 is rotated to the unlocked position, the second protruding structure 511 interferes with other positions of the first protruding structure 121, preventing the knob 510 from rotating further. At this time, the stop block 520 precisely avoids the movement path of the first transmission member 410, releasing the limitation on the first transmission member 410. Through this interference limitation, it is ensured that the knob 510 can be reliably limited by the housing 100 in both the locked and unlocked positions, preventing the knob 510 from rotating due to vibration or accidental contact, which could lead to locking failure or mis-locking.

[0085] This embodiment utilizes the interference limiting effect of the first protrusion structure 121 and the second protrusion structure 511 to ensure reliable mechanical positioning of the knob 510 in both locked and unlocked positions. This prevents the knob 510 from rotating unexpectedly due to external forces such as vibration or collision, further enhancing the safety and stability of the locking mechanism 500. The first protrusion structure 121 and the second protrusion structure 511 are simple and easy to manufacture, eliminating the need for additional limiting components and reducing manufacturing costs. Furthermore, the small interference contact area between the two results in moderate frictional resistance during rotation, ensuring reliable limiting without affecting the smooth operation of the knob 510, thus achieving a balance between limiting effect and user experience.

[0086] Optionally, please refer to Figure 11 and Figure 12 The first transmission member 410 has a first working position and a second working position. When the first operating part 101 is operated, the first transmission member 410 moves from the first working position to the second working position. The second transmission member 420 is slidably mounted on the housing 100 in the front-rear direction, and a second elastic member 421 is provided between the second transmission member 420 and the housing 100.

[0087] Specifically, the second transmission component 420 is slidably mounted on the housing 100 in the front-to-back direction through a sliding rail and slider, or a guide groove 130 and guide block 4231, and is fixedly connected to the rear end of the puncture needle 310, driving the puncture needle 310 to slide synchronously. Preferably, a slot 4232 can be provided on one side of the second transmission component 420, and the rear end of the puncture needle 310 is fixed in the slot 4232 by a snap-fit, thereby achieving a detachable fixed connection between the puncture needle 310 and the second transmission component 420. This allows the puncture needle 310 to be disassembled and replaced after each treatment, while the rear end of the puncture needle 310 is also reliably fixed, enabling it to move forward quickly with the second transmission component 420 to perform puncture on the human body.

[0088] The second elastic element 421 is preferably a compression spring, which is telescopically disposed between the second transmission element 420 and the housing 100 in the front-rear direction. For example, one end abuts against the housing 100, and the other end is fixed to the rear end of the second transmission element 420. When the first transmission element 410 is in the first working position, it limits the second transmission element 420 through a structure such as a buckle or a locking hook. At this time, the puncture needle 310 remains in the retracted state, and the second elastic element 421 is compressed and stores energy. When the first operating part 101 is operated to drive the first transmission element 410 to move to the second working position, the first transmission element 410 releases the limitation on the second transmission element 420, and the second elastic element 421 extends under the action of elastic force, generating a forward driving force, which drives the second transmission element 420 and the puncture needle 310 to slide forward synchronously and quickly, so that the puncture needle 310 switches from the retracted state to the extended state, completing the puncture action. The second elastic element 421 can also be high-elasticity rubber, disc spring, etc., as long as it can provide a stable telescopic driving force.

[0089] This embodiment uses a second elastic element 421 as the driving force for the ejection of the puncture needle 310. This design is simple in structure and provides stable power, ensuring a continuous and uniform ejection force for the puncture needle 310, thus guaranteeing rapid and precise puncture. The first transmission element 410 controls the energy storage and release of the second elastic element 421 by switching between a first and second working position, ensuring reliable transmission and rapid release of the puncture needle 310. The elastic drive method is free from electromagnetic interference, adapting to the requirements of medical environments. Furthermore, its wear-resistant structure and long lifespan reduce maintenance costs.

[0090] Please continue reading. Figures 11 to 14 Furthermore, the second transmission member 420 has a second operating part 422 protruding from the outside of the housing 100. When the second operating part 422 is pressed backward by an external force, it can drive the second transmission member 420 to move backward quickly, thereby causing the puncture needle 310 to reset. The second operating part 422 is an integrally formed or fixedly installed mechanism at the front end of the second transmission member 420, such as a button, which is convenient for the operator to press manually.

[0091] In this embodiment, when the puncture needle 310 is in the popped-out state, the second elastic element 421 is fully extended and has no stored energy. When resetting is required, the operator presses the second operating part 422 backward. The external force is transmitted to the second transmission member 420 through the second operating part 422, causing the second transmission member 420 to slide backward synchronously with the puncture needle 310. During this process, the second elastic element 421 is compressed and stored energy again. When the puncture needle 310 is fully retracted into the catheter 320, the first transmission member 410 can return to the first working position under the action of its own resetting structure, and re-limit the second transmission member 420, keeping the puncture needle 310 in the retracted state, thus completing the resetting.

[0092] In this embodiment, the puncture needle 310 is manually reset by setting a second operating part 422, which is intuitive and convenient to operate and improves treatment efficiency. During the reset process, the second elastic element 421 is simultaneously charged with energy, eliminating the need for additional energy charging operations and simplifying the usage process.

[0093] Optionally, a first elastic element 411 is provided between the first transmission member 410 and the housing 100, and a locking structure is provided between the first transmission member 410 and the second transmission member 420. The first elastic element 411 is preferably a torsion spring or a compression spring, and its installation method is adjusted according to the movement mode of the first transmission member 410. For example, when the first transmission member 410 is rotary, the first elastic element 411 is a torsion spring, sleeved on the rotating shaft 413 of the first transmission member 410, with one end fixed to the housing 100 and the other end fixed to the first transmission member 410, providing a restoring force to drive the first transmission member 410 from the second working position back to the first working position. The locking structure includes a first locking hook 412 provided on the first transmission member 410 and a second locking hook 425 provided on the second transmission member 420. Matching guide slopes are respectively provided on the opposing surfaces of the first locking hook 412 and the second locking hook 425. When the second operating part 422 is pressed and the second transmission member 420 is driven to move backward, the guide slope of the second locking hook 425 and the guide slope of the first locking hook 412 slide together. Under the guidance of the slope, the first locking hook 412 undergoes slight deformation or deflection. When the second transmission member 420 moves to the preset position and the corresponding puncture needle 310 is completely retracted into the catheter 320, the first locking hook 412 is reset under the reset force of the first elastic member 411 and engages with the second locking hook 425 to achieve automatic locking. At this time, the second elastic member 421 is compressed and stored, and the puncture needle 310 remains in the retracted state. Locking and energy storage can be completed without additional operation.

[0094] In this embodiment, the first elastic element 411 enables the first transmission element 410 to automatically reset to the first working position after triggering, eliminating the need for manual reset and simplifying the operation process. The locking structure achieves automatic locking through the guide slope; pressing the second operating part 422 completes the reset while simultaneously locking and accumulating energy, achieving this in one step and significantly improving ease of use. The automatic locking and reset design allows for rapid and repeated use of the handle, improving clinical efficiency.

[0095] Preferably, please refer to Figures 11 to 14The second transmission component 420 is made of elastic material and includes a body 423 and guide blocks 4231 protruding from both sides of the body 423. The body 423 is fixedly connected to the rear end of the puncture needle 310. A guide groove 130 extending in the front-rear direction is provided on the inner side of the housing 100 corresponding to the position of the guide block 4231. The guide block 4231 is inserted laterally into the guide groove 130 and slides in the front-rear direction with the guide groove 130. The front and rear ends of the guide groove 130 are closed, that is, both ends are provided with baffles. When the guide block 4231 slides to the front end of the guide groove 130, it is blocked by the baffles, limiting the maximum ejection stroke of the puncture needle 310. When the guide block 4231 slides to the rear end of the guide groove 130, it is also blocked by the baffles, limiting the maximum retraction stroke of the puncture needle 310.

[0096] This design avoids excessive sliding of the second transmission component 420, preventing damage from collisions with other parts, while ensuring precise ejection and retraction of the puncture needle 310. The second transmission component 420, made of elastic material, effectively cushions the impact force during ejection and retraction of the puncture needle 310, preventing damage from rigid collisions, extending the handle's lifespan, reducing vibration and noise, and improving the user experience. In this embodiment, the mating structure of the guide block 4231 and the guide groove 130 provides precise guidance for the sliding of the second transmission component 420, ensuring the puncture needle 310 moves linearly in the front-to-back direction, preventing deviation or jamming. The closed design at both ends of the guide groove 130 limits the travel, preventing structural damage from excessive sliding and further improving structural reliability.

[0097] Furthermore, the first transmission member 410 is rotatably mounted on the housing 100, and the locking structure is a locking hook with a guide bevel. The first transmission member 410 is rotatably mounted inside the housing 100 via a rotating shaft 413, and includes a rotating shaft 413 and a first arm 414 and a second arm 415 extending outward from the rotating shaft 413, respectively. The first locking hook 412 is located at the free end of the first arm 414 and engages in front of the second locking hook 425. The first operating part 101 is slidably mounted on the front end or side of the housing 100 in the front-rear direction, located in front of the second arm 415. A third elastic member 1011 can be provided between the first operating part 101 and the housing 100 to provide a forward restoring force.

[0098] When the ejection mechanism 400 needs to be triggered, the operator presses the first operating part 101 backward. The first operating part 101 presses against the second arm 415, driving the first transmission member 410 to rotate around the pivot 413. This causes the first arm 414 and the first locking hook 412 to rotate synchronously, disengaging the first locking hook 412 from the second locking hook 425 and releasing the lock. The second elastic member 421 then extends, driving the puncture needle 310 to eject. When it is necessary to reset the puncture needle 310, the operator can press the second operating part 422, causing the guide slope of the second locking hook 425 to slide against the guide slope of the first locking hook 412. This drives the first transmission member 410 to rotate in the opposite direction around the pivot 413. After resetting, the first locking hook 412 engages with the second locking hook 425 under the resetting force of the first elastic member 411, completing the automatic locking.

[0099] In this embodiment, the first transmission component 410 is rotary-mounted, resulting in a short transmission path and rapid response. This allows for quick transmission of operating force, making the ejection and locking of the puncture needle 310 more agile and improving operational efficiency. The guide ramp design of the locking structure ensures smooth locking and unlocking processes, reducing operational resistance. Furthermore, the first transmission component 410 connects the locking structure and the operating part via a double-arm structure, resulting in a compact and rationally laid-out design that makes the ablation gun 1000 small in overall size and easy to hold and operate.

[0100] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention specification and drawings, or any direct or indirect application in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A heating device for an ablation gun, characterized in that, The heating device includes: The container has a cavity and a first inlet and a first outlet that connect the cavity. The first outlet is used to connect to the steam channel of the ablation gun. When the heating device is working, a first partition and a second partition are formed in the cavity from top to bottom. The first partition is used to contain steam and the second partition is used to contain liquid. The first outlet is directly connected to the first partition. A conduit, disposed within the cavity, is made of a magnetically conductive material and has a second inlet and a second outlet, the second inlet being connected to the first inlet, the conduit being at least partially located in the first partition, and the second outlet being located in the first partition; and, A coil is wound around the outer periphery of the pipe, and the coil is covered with an insulating and waterproof layer at least on the outer surface in contact with the pipe. The coil is used to connect to a high-frequency inverter power supply outside the container.

2. The heating device as described in claim 1, characterized in that, The pipeline is located partly in the first partition and partly in the second partition.

3. The heating device as described in claim 2, characterized in that, The pipeline includes a first pipe segment adjacent to the second inlet and a second pipe segment adjacent to the second outlet. The first pipe segment extends horizontally, with the upper half of the first pipe segment located in the first partition and the lower half of the first pipe segment located in the second partition. The second pipe segment extends upward from the first pipe segment to the first partition, and the length of the first pipe segment is greater than that of the second pipe segment.

4. The heating device according to any one of claims 1 to 3, characterized in that, The first outlet is located at the top of the container, and / or the first inlet is located on the side of the container.

5. The heating device according to any one of claims 1 to 3, characterized in that, The container includes a first sidewall and a second sidewall that are disposed opposite to each other in a first direction, with the first outlet relatively close to the first sidewall and the second outlet relatively close to the second sidewall.

6. The heating device as described in claim 5, characterized in that, The pipe is bent within the cavity, forming a first bend and a second bend arranged side by side and adjacent to each other. The first bend and the second bend extend in a second direction, and the coil wound around the first bend has the opposite winding direction to the coil wound around the second bend.

7. The heating device as described in claim 6, characterized in that, The first bending segment and the second bending segment are provided in multiples, and the multiple first bending segments and the multiple second bending segments are arranged alternately along the first direction, and a gap is defined between each first bending segment and each second bending segment adjacent in the first direction; The container includes a third sidewall and a fourth sidewall arranged opposite to each other in a second direction. The third sidewall and the fourth sidewall are respectively provided with a plurality of guide plates protruding into the cavity. The plurality of guide plates are inserted into a plurality of gaps in a one-to-one correspondence. The upper end of the guide plate extends to the top of the cavity, and the lower end of the guide plate extends at least to the second partition. The first outlet is located between the third sidewall and the guide plate closest to the third sidewall, and the second outlet is located between the fourth sidewall and the guide plate closest to the fourth sidewall.

8. The heating device as described in claim 7, characterized in that, The guide plate has a micro-protrusion structure integrally formed on the outer surface of the first partition, which is used to adsorb liquid in the fluid.

9. The heating device according to any one of claims 1 to 3, characterized in that, The cavity is also equipped with a liquid level sensor, and the heating device further includes a controller. The controller is electrically connected to the liquid level sensor and the high-frequency inverter power supply, and is used to control the high-frequency inverter power supply to start supplying power when the liquid level sensor detects that the liquid level in the cavity has reached the adjacent area between the first partition and the second partition.

10. An ablation gun, characterized in that, include: chassis; A heating device is disposed in the housing, wherein the heating device is the heating device as described in any one of claims 1 to 9; as well as, A puncture needle, mounted on the housing, has a travel that extends and moves relative to or away from the housing. A steam channel is formed in the puncture needle, and the steam channel is connected to the first outlet of the heating device.

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