Thermal vapor ablation puncture device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, disclose a kind of hot steam ablation puncture device. Hot steam ablation puncture device includes puncture needle body and heating unit, the inside of puncture needle body is provided with steam release chamber, fluid passage and light guide channel, the front end of the fluid passage and the light guide channel is communicated with the steam release chamber, for introducing liquid in the fluid passage, puncture needle body is provided with steam output hole, the steam output hole is communicated with the steam release chamber;Heating unit includes laser optical fiber, the laser optical fiber is worn in the light guide channel, and the emission end of the laser optical fiber is towards the steam release chamber. The utility model does not need to add steam delivery catheter, reduce the pipe diameter of puncture device;Eliminate electromagnetic radiation influence, can directly produce steam in application end, avoid energy loss in the conveying process of steam.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a hot steam ablation puncture device. Background Technology

[0002] In recent years, with the continuous advancement and innovation of medical technology, steam ablation technology, with its numerous significant advantages such as minimally invasiveness and rapid postoperative recovery, is gradually being widely applied and promoted in the field of clinical treatment. The core of this technology lies in utilizing the interaction between hot steam and tissue to achieve the therapeutic purpose. The tissue's reaction to hot steam is closely related to the temperature of the steam, exhibiting different physiological and pathological changes.

[0003] The working principle of steam ablation technology is mainly based on the direct action of high-temperature steam on the lesion tissue. When high-temperature steam comes into contact with the lesion tissue, it induces protein denaturation within the tissue. This denaturation process disrupts the normal structure and function of cells, ultimately achieving the goal of ablating the lesion. By precisely controlling the temperature and duration of the steam's action, doctors can provide personalized treatment for different types of conditions, improving treatment effectiveness while minimizing damage to surrounding healthy tissues.

[0004] However, current mainstream hot steam therapy devices still have some shortcomings in design and application. Most of these devices use radiofrequency energy to heat water, generating high-temperature steam, which is then delivered to the target tissue via a catheter for treatment. However, this design has some significant drawbacks. First, due to the long catheter tubing, significant heat loss occurs during steam delivery, resulting in a lower steam temperature upon reaching the target tissue, affecting treatment efficacy. To compensate for this deficiency, additional insulation measures must be added, undoubtedly increasing the complexity and cost of the equipment. Second, the relatively large diameter of the catheter is unsuitable for some delicate endoscopic surgeries, limiting the application of steam ablation technology in these areas. Furthermore, the radiofrequency system generates electromagnetic radiation during operation, which may pose potential risks to some patients sensitive to electromagnetic radiation, thus limiting its use for some patients. Utility Model Content

[0005] The purpose of this invention is to provide a hot steam ablation puncture device that eliminates the need for additional steam delivery conduits, reduces the diameter of the puncture device, eliminates the influence of electromagnetic radiation, and can directly generate steam at the application end, avoiding energy loss during steam delivery.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The hot steam ablation puncture device includes:

[0008] The puncture needle body has a steam release chamber, a fluid channel and a light guide channel inside. The front ends of the fluid channel and the light guide channel are both connected to the steam release chamber. The fluid channel is used to introduce liquid. The puncture needle body has a steam output hole, which is connected to the steam release chamber.

[0009] The heating unit includes a laser fiber, which is inserted into the light guide channel and the emitting end of the laser fiber faces the steam release chamber.

[0010] As an alternative to the hot steam ablation puncture device, the puncture needle body is provided with a plurality of fluid channels, which are arranged circumferentially with the light guide channel as the center.

[0011] As an alternative to the hot steam ablation puncture device, the puncture needle body is provided with a plurality of light guide channels, and each of the plurality of light guide channels is provided with a laser fiber.

[0012] As an alternative to the hot steam ablation puncture device, the hot steam ablation puncture device further includes:

[0013] A water inlet connector is provided, which is sleeved on the tail end of the puncture needle body and communicates with the fluid channel. One end of the laser optical fiber is inserted through the water inlet connector and extends out.

[0014] As an alternative to the hot steam ablation puncture device, the puncture needle body is made of metal.

[0015] As an alternative to the hot steam ablation puncture device, the inner surface of the steam release chamber is coated with an anti-coking coating, and / or the outer wall of the puncture needle body is provided with a heat insulation layer.

[0016] As an alternative to the hot steam ablation puncture device, a thermal sensor is installed inside the puncture needle body.

[0017] As an alternative to the hot steam ablation puncture device, the tip of the puncture needle body is provided with a plurality of steam output holes, which are arranged circumferentially with the axis of the puncture needle body as the center.

[0018] As an alternative to the hot steam ablation puncture device, the annular wall of the puncture needle body is provided with a number of steam output holes.

[0019] As an alternative to the hot steam ablation puncture device, a plurality of the steam output holes are arranged at intervals along the extension direction of the puncture needle body; and / or a plurality of the steam output holes are arranged at intervals around the center of the annular wall.

[0020] The beneficial effects of this utility model are:

[0021] The thermal steam ablation puncture device provided by this invention has a fluid channel and a conduit channel inside the puncture needle body that are both connected to a steam release chamber. The fluid channel allows liquid to be introduced into the steam release chamber. The laser fiber of the heating unit is installed in the light guide channel inside the puncture needle body, with the emitting end of the laser fiber facing the steam release chamber and rapidly vaporizing the liquid. The generated steam is discharged through a steam output hole on the puncture needle body. By utilizing laser energy to directly excite the liquid at the application end to form thermal steam, which directly acts on the target tissue, the device achieves the goals of immediate use, rapid action, and precise ablation. It eliminates the need for an additional steam delivery conduit, allowing for a compact design suitable for endoscopic surgery; laser replaces radiofrequency, eliminating electromagnetic interference; steam is generated locally at the end, avoiding energy loss; the fluid channel supports the use of common surgical fluids such as saline, distilled water, and medications, improving adaptability and safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a top view of the hot steam ablation puncture device in Embodiment 1 of this utility model;

[0024] Figure 2 This is a cross-sectional view of the hot steam ablation puncture device in Embodiment 1 of this utility model;

[0025] Figure 3 This is a schematic diagram of the assembly of the puncture needle body and the laser fiber in Embodiment 1 of this utility model;

[0026] Figure 4 This is a cross-sectional view of the hot steam ablation puncture device in Embodiment 2 of this utility model;

[0027] Figure 5 This is a top view of the hot steam ablation puncture device in Embodiment 2 of this utility model.

[0028] Figure label:

[0029] 1. Puncture needle body; 2. Laser fiber; 3. Water inlet connector;

[0030] 11. Steam release chamber; 12. Fluid channel; 13. Light guide channel; 14. Steam output port;

[0031] 31. Water inlet. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In recent years, with the continuous advancement and innovation of medical technology, steam ablation technology, with its numerous significant advantages such as minimally invasiveness and rapid postoperative recovery, is gradually being widely applied and promoted in the field of clinical treatment. The core of this technology lies in utilizing the interaction between hot steam and tissue to achieve the therapeutic purpose. The tissue's reaction to hot steam is closely related to the temperature of the steam, exhibiting different physiological and pathological changes.

[0037] When the temperature of steam is below 40℃, its stimulation to tissues is extremely mild, almost without triggering any noticeable physiological response. Therefore, steam cannot achieve effective therapeutic effects within this temperature range. However, when the temperature is between 40℃ and 100℃, steam can cause denaturation of tissue proteins, leading to cell death and blood clotting. This characteristic makes steam in this temperature range highly suitable for coagulation treatment and hemostasis of superficial tissues, possessing significant clinical application value. Once the steam temperature exceeds 100℃, the water within the tissue rapidly vaporizes, generating a powerful mechanical expansion force. This expansion force possesses considerable energy, enabling rapid ablation and precise dissection of tissues, providing an effective means of treating some complex diseases.

[0038] The working principle of steam ablation technology is mainly based on the direct action of high-temperature steam on the lesion tissue. When high-temperature steam comes into contact with the lesion tissue, it induces protein denaturation within the tissue. This denaturation process disrupts the normal structure and function of cells, ultimately achieving the goal of ablating the lesion. By precisely controlling the temperature and duration of the steam's action, doctors can provide personalized treatment for different types of conditions, improving treatment effectiveness while minimizing damage to surrounding healthy tissues.

[0039] However, current mainstream hot steam therapy devices still have some shortcomings in design and application. Most of these devices use radiofrequency energy to heat water, generating high-temperature steam, which is then delivered to the target tissue via a catheter for treatment. However, this design has some significant drawbacks. First, due to the long catheter tubing, significant heat loss occurs during steam delivery, resulting in a lower steam temperature upon reaching the target tissue, affecting treatment efficacy. To compensate for this deficiency, additional insulation measures must be added, undoubtedly increasing the complexity and cost of the equipment. Second, the relatively large diameter of the catheter is unsuitable for some delicate endoscopic surgeries, limiting the application of steam ablation technology in these areas. Furthermore, the radiofrequency system generates electromagnetic radiation during operation, which may pose potential risks to some patients sensitive to electromagnetic radiation, thus limiting its use for some patients.

[0040] To eliminate the need for an additional steam delivery conduit and reduce the diameter of the puncture device, and to eliminate the influence of electromagnetic radiation, steam can be generated directly at the application point, avoiding energy loss during steam delivery. This embodiment provides a hot steam ablation puncture device, which is described below in conjunction with... Figures 1 to 5 The specific content of this embodiment will be described in detail.

[0041] Example 1

[0042] like Figures 1 to 3As shown, the thermal steam ablation puncture device in this embodiment includes a puncture needle body 1 and a heating unit. The puncture needle body 1, as the core supporting component of the device, has a steam release chamber 11, a fluid channel 12, and a light guide channel 13 internally. The front ends of both the fluid channel 12 and the light guide channel 13 are connected to the steam release chamber 11, providing a foundation for subsequent liquid introduction and laser heating. The fluid channel 12 is used to introduce liquid, and the puncture needle body 1 has a steam output hole 14 connected to the steam release chamber 11, providing a channel for subsequent steam discharge. The heating unit is the key energy supply component of this thermal steam ablation puncture device. The heating unit includes a laser fiber 2, which is inserted into the light guide channel 13, with the emitting end of the laser fiber 2 facing the steam release chamber 11. This design ensures that laser energy can act efficiently and concentratedly on the liquid within the steam release chamber 11.

[0043] In summary, the unique feature of this steam ablation puncture device is that both the fluid channel 12 and the light guide channel 13 inside the puncture needle body 1 are connected to the steam release chamber 11. The fluid channel 12 can stably and continuously introduce liquid into the steam release chamber 11, providing the material basis for steam generation. The laser fiber 2 of the heating unit is cleverly installed in the light guide channel 13 inside the puncture needle body 1, and the emitting end of the laser fiber 2 is precisely pointed towards the steam release chamber 11, so that the laser energy can directly act on the introduced liquid and quickly vaporize it. The vaporized steam will quickly fill the steam release chamber 11 and be orderly discharged through the carefully designed steam output hole 14 on the puncture needle body 1.

[0044] This thermal steam ablation trocar has several significant advantages. First, it utilizes laser energy to directly stimulate the liquid at the application end to form thermal steam, which then acts directly on the target tissue. This instantaneous heating and use method allows the steam to reach the required temperature instantly, eliminating the need for pre-prepared steam and a lengthy delivery process like traditional equipment, thus achieving rapid action. During treatment, it can quickly ablate the target tissue, significantly shortening the operation time and reducing the pain and risks suffered by patients due to prolonged surgery. Second, this trocar achieves precise ablation. Because the laser energy can be highly concentrated on the liquid in the steam release chamber 11, the temperature and pressure of the generated steam can be precisely controlled. When acting on the target tissue, the ablation range and depth can be precisely controlled according to the specific condition of the lesion, avoiding unnecessary damage to surrounding normal tissue and improving the safety and effectiveness of the surgery. Furthermore, the design eliminates the need for an additional steam delivery conduit, making the overall design of the thermal steam ablation trocar more compact and smaller. This compact design allows the instrument to easily adapt to the operating space requirements of endoscopic surgery, facilitating precise operation under endoscopic guidance. In endoscopic surgery, the operating space is often limited, making it difficult to use traditional large equipment. The compact design of this trocar perfectly solves this problem, providing a more convenient and efficient treatment method for endoscopic surgery. Furthermore, using laser instead of radiofrequency as the energy source has the significant advantage of eliminating electromagnetic interference. In surgical scenarios with high electromagnetic requirements, such as when patients have implanted pacemakers or other electronic devices, the electromagnetic radiation generated by traditional radiofrequency equipment may interfere with these devices, affecting their normal operation and even threatening the patient's life. The laser heating method used in this trocar completely avoids the problem of electromagnetic interference, allowing more patients to receive treatment safely and expanding the range of surgical indications. Finally, the design of generating steam at the end avoids energy loss during delivery. In traditional equipment, steam needs to be delivered to the target tissue through a long catheter. During this process, the temperature and pressure of the steam inevitably decrease, resulting in insufficient steam energy reaching the target tissue and affecting the ablation effect. This trocar generates steam directly at the tip of the puncture needle 1, allowing the steam to act on the target tissue in an optimal state, improving energy utilization efficiency and further enhancing the ablation effect. Simultaneously, the fluid channel 12 supports the use of common surgical fluids such as saline, distilled water, and medications. This not only improves the adaptability of the instrument and meets the treatment needs of different patients but also enhances surgical safety and reduces adverse reactions such as allergies that may be caused by the use of special fluids.

[0045] Furthermore, in some application scenarios, the puncture needle body 1 is equipped with several fluid channels 12, which are arranged circumferentially around the light guide channel 13. From the perspective of fluid supply, adding multiple fluid channels 12 is of significant importance. With a single fluid channel 12, the fluid supply is limited by the channel diameter and flow rate, making it difficult to meet the large fluid demands of large-area or high-intensity ablation treatments. This design, by setting multiple fluid channels 12, effectively opens up multiple fluid delivery channels, significantly increasing the fluid supply. This means that more fluid can enter the vapor release chamber 11 per unit time, providing a sufficient material basis for vapor generation. From the perspective of energy utilization efficiency, the design of multiple fluid channels 12 allows for the reuse of the energy from the laser fiber 2. The laser energy emitted by the laser fiber 2 has a certain range and intensity distribution within the vapor release chamber 11. When there is only one fluid channel 12, the laser energy may not be fully utilized, and some energy may be wasted due to insufficient fluid supply. Multiple fluid channels 12 are arranged circumferentially around the light guide channel 13, allowing liquid to enter the laser action area uniformly from different directions. This enables the laser energy to interact more fully with the liquid, rapidly vaporizing more liquid and improving laser energy utilization efficiency while reducing energy consumption. Furthermore, this design ensures uniform heating and vaporization of the liquid. Because the multiple fluid channels 12 are evenly distributed around the light guide channel 13, the liquid receives relatively uniform laser irradiation after entering the vapor release chamber 11 through each channel. This avoids the localized overheating or undercooling caused by concentrated liquid inflow in a single fluid channel 12, allowing the liquid to absorb laser energy more uniformly within the vapor release chamber 11, achieving uniform heating and vaporization. This uniform vaporization process helps generate more stable and controllable vapor, thereby improving the precision and effectiveness of ablation treatment and reducing unnecessary damage to surrounding normal tissue caused by uneven vapor distribution.

[0046] Furthermore, in other application scenarios, the puncture needle body 1 is equipped with several light guide channels 13, each containing a laser fiber 2. Adding multiple light guide channels 13 and laser fibers 2 significantly improves efficiency. In a single light guide channel 13 and single laser fiber 2 design, the laser energy may be relatively concentrated, but the effective range is limited. When dealing with large areas of tissue or performing high-intensity ablation treatment, the energy of a single laser fiber 2 may not be able to quickly and effectively vaporize a large amount of liquid, resulting in low vaporization efficiency, prolonged operation time, and increased patient pain and risk. This design, by setting several light guide channels 13 and laser fibers 2, is equivalent to introducing multiple energy sources into the vapor release chamber 11. These laser fibers 2 can simultaneously emit lasers, heating the liquid from different directions and positions, greatly increasing the contact area and duration of laser energy with the liquid, thereby significantly accelerating the vaporization efficiency of the liquid. Simultaneously, the rapid vaporization process allows steam to quickly fill the steam release chamber 11 and act evenly on the target tissue through the steam output port 14, forming a more uniform ablation area and further improving the precision and effectiveness of the treatment. Furthermore, this design offers flexibility and adaptability. In practical applications, doctors can flexibly adjust the working state and parameters of each laser fiber 2 according to the size, shape, and location of the lesion tissue to achieve personalized treatment. For example, for areas with more severe local lesions, the power of the corresponding laser fiber 2 can be increased to enhance the ablation effect; while for surrounding normal tissue, the power can be appropriately reduced to minimize damage. This flexible adjustment method allows the thermal steam ablation puncture device to better adapt to different clinical needs, providing patients with higher quality and more efficient treatment options.

[0047] Furthermore, the thermal steam ablation puncture device also includes a water inlet connector 3 with a water inlet 31. The water inlet connector 3 is fitted onto the tail end of the puncture needle body 1 and communicates with the fluid channel 12. This fitting method ensures a tight connection between the two, preventing liquid leakage and other adverse situations. Simultaneously, the water inlet connector 3 communicates with the fluid channel 12 inside the puncture needle body 1, providing a reliable channel for smooth liquid flow. During the procedure, a stable liquid supply is a key factor in ensuring the continuous and uniform generation of thermal steam. The tight fit between the water inlet connector 3 and the puncture needle body 1 avoids liquid leakage or supply interruption due to loose connections. For example, in prolonged endoscopic surgery, if the liquid supply is unstable, insufficient steam generation may occur, affecting the continuity and effectiveness of the ablation treatment. The design of the water inlet connector 3 effectively prevents this from happening, providing a reliable liquid supply guarantee for the procedure. Meanwhile, the rational design of the inlet 31 (the design of the inlet 31 fully considers the convenience and stability of liquid inflow; its diameter, shape, and position have been repeatedly tested and optimized to ensure that the liquid can smoothly enter the inlet connector 3 at a suitable flow rate and volume) allows the liquid to enter the inlet connector 3 at a stable flow rate, further ensuring the stable flow of the liquid within the fluid channel 12, thus laying the foundation for stable steam generation. One end of the laser fiber 2 passes through the inlet connector 3 and extends out. This design layout not only ensures the stable installation of the laser fiber 2 but also provides convenient conditions for its connection with external laser equipment. On the one hand, the inlet connector 3 provides a stable installation position for the laser fiber 2, allowing it to maintain a fixed posture inside the puncture needle body 1, avoiding the problem of inaccurate laser emission direction caused by fiber optic shaking or displacement. Accurate laser emission direction is crucial for concentrating laser energy on the liquid within the steam release chamber 11, directly affecting the vaporization efficiency of the liquid and the ablation treatment effect. On the other hand, the inlet connector 3 provides a certain degree of protection for the laser fiber 2. During the surgical procedure, the puncture needle 1 may be subjected to various external forces, such as collisions and friction. The presence of the water inlet connector 3 can buffer these external forces to a certain extent, reducing damage to the laser fiber 2, extending its service life, and reducing the risk of equipment failure, thereby improving the success rate and safety of the surgery. In actual operation, the liquid first reaches the water inlet connector 3 with the water inlet 31. Subsequently, the liquid flows accurately into the fluid channel 12 along the communication path between the water inlet connector 3 and the fluid channel 12, fully preparing for the subsequent vaporization process in the vapor release chamber 11.

[0048] Furthermore, the puncture needle body 1 is made of a metallic material. For example, the puncture needle body 1 is made of medical-grade stainless steel or alloy materials. Due to the high mechanical strength of these materials, the puncture needle body 1 can maintain a stable shape and structure during puncture, and is not easily deformed or broken by external forces. For instance, when the puncture needle body 1 needs to penetrate a thick tissue layer or encounter a hard bone structure, the high-strength material can withstand greater pressure, ensuring that the puncture needle passes smoothly through the target tissue without getting stuck or breaking due to insufficient strength. This avoids the risk of secondary damage to surrounding tissues caused by damage to the puncture needle body 1, greatly improving the safety of the puncture operation. In addition, the corrosion resistance of medical-grade stainless steel and alloy materials also provides strong support for the safety of the puncture operation. Various body fluids and physiological environments exist inside the human body, which may contain corrosive substances such as acids and alkalis. If the material of the puncture needle body 1 is not corrosion-resistant, a chemical reaction will occur upon contact with these substances, producing harmful substances or causing corrosion on the needle surface. These corrosion products may enter human tissues, triggering inflammatory reactions or other adverse reactions, threatening the patient's health. In contrast, puncture needle bodies 1 made of corrosion-resistant medical-grade stainless steel or alloy materials can effectively resist corrosion from the internal environment of the human body, maintaining the integrity and cleanliness of the needle, reducing the risk of complications caused by material corrosion, and further ensuring the safety of the puncture procedure.

[0049] Furthermore, the inner surface of the steam release chamber 11 is coated with an anti-coking coating, which effectively reduces the risk of blockage and thermal runaway. The steam release chamber 11 is a key part of steam generation and release during the thermal steam ablation process. During steam generation, impurities, minerals, and tiny particles produced by high-temperature decomposition in the liquid easily deposit on the inner surface of the chamber. Over time, these deposits gradually form a coking layer, blocking the steam release channel. The presence of the anti-coking coating changes the physical and chemical properties of the inner surface of the chamber, making its surface smoother, reducing the adhesion of impurities and particles, maintaining the unobstructed steam release channel, ensuring continuous and stable steam output, and improving the efficiency and effectiveness of thermal steam ablation therapy. The presence of a coking layer not only blocks the channel but also affects heat transfer. The coking layer has poor thermal conductivity; when it forms on the inner surface of the chamber, it causes heat to accumulate in a localized area, causing a sharp rise in temperature in that area, thus triggering thermal runaway. Thermal runaway may lead to excessively high steam temperature and pressure, which can not only damage the equipment but also cause serious burns and other injuries to the patient. The anti-coking coating reduces coking and maintains uniform heat transfer on the inner surface of the cavity, avoiding local overheating and thus effectively reducing the risk of thermal runaway, ensuring the safety and reliability of the hot steam melting process.

[0050] For example, the anti-coking coating can be a composite ceramic coating. Composite ceramic coatings are typically made of high-temperature resistant ceramic materials, such as zirconium dioxide, alumina, and magnesium oxide. These materials possess excellent high-temperature resistance and chemical stability, enabling them to maintain the integrity and performance of the coating under high-temperature environments. By forming a dense, hard ceramic glaze shell, the composite ceramic coating effectively prevents the adhesion and accumulation of impurities and residues on the equipment surface, thereby reducing coking. Simultaneously, the high thermal conductivity of the ceramic coating also contributes to uniform heat transfer, preventing localized overheating.

[0051] Optionally, the outer wall of the puncture needle body 1 is provided with a heat insulation layer. In high-risk areas, such as procedures near important nerves or blood vessels, excessive heat generated inside the puncture needle body 1 may cause thermal damage to nerves and blood vessels if it is excessively conducted to surrounding tissues. Nerve damage may lead to serious consequences such as sensory abnormalities and motor dysfunction, while vascular damage may cause complications such as bleeding and thrombosis. The heat insulation layer on the outer wall of the puncture needle body 1 has excellent heat insulation performance, effectively blocking heat transfer and confining the heat inside the puncture needle body 1 within a certain range, reducing the diffusion of heat to surrounding important tissues. In this way, even if the puncture needle body 1 is close to nerves or blood vessels, the risk of thermal damage to them can be minimized, ensuring the safety and health of the patient. The heat insulation layer allows medical staff to operate with greater confidence, without worrying about accidental damage to surrounding important structures due to heat conduction. This helps medical staff to perform puncture and ablation procedures more focused and accurately, improving the success rate and precision of the surgery. At the same time, it reduces the psychological pressure caused by operational risks, enabling medical staff to deal with various complex surgical situations more calmly, and further improves the overall quality of medical care.

[0052] Furthermore, a thermal sensor is installed inside the puncture needle body 1. This sensor can detect the temperature of the puncture needle body 1 in real time and with high precision. Whether the puncture needle body 1 has just come into contact with the tissue or when the temperature changes during ablation or other treatment procedures, the thermal sensor can instantly capture minute temperature fluctuations and transmit this temperature information rapidly and accurately to external monitoring equipment in the form of electrical signals. By detecting the temperature of the puncture needle body 1 in real time, medical staff can promptly and comprehensively understand the thermal state of the puncture needle body 1 within the tissue. This function is crucial for improving tissue protection. In medical procedures, excessively high temperatures can cause thermal damage to surrounding tissues, leading to a series of serious complications such as tissue necrosis and inflammatory reactions, affecting the patient's recovery process and treatment outcome. With the real-time monitoring of the thermal sensor, medical staff can adjust operating parameters in a timely manner according to temperature changes, such as controlling the ablation power and time, ensuring that the tissues around the puncture needle body 1 are always within a safe temperature range, thereby minimizing the risk of thermal damage and meeting higher standards of clinical safety requirements.

[0053] Furthermore, the annular wall of the puncture needle body 1 is provided with several steam output holes 14. The steam is emitted in all directions. This side-projection steam output method reduces the difficulty for medical personnel in precisely controlling the direction of steam injection. Compared with traditional single-point or directional steam output methods, this design eliminates the need for medical personnel to frequently adjust the angle of the puncture needle body 1 to change the steam direction. Simply placing the puncture needle body 1 in the appropriate position allows the steam to be automatically injected into the surrounding tissue. This greatly simplifies the operation process and reduces the difficulty of operation, especially for inexperienced medical personnel or during emergency treatments, enabling faster and more accurate procedures and improving the timeliness and success rate of treatment.

[0054] Specifically, there are two typical arrangement patterns. First, several steam outlet holes 14 are arranged at intervals along the extension direction of the puncture needle body 1. This arrangement is like a uniform and orderly distribution of the steam outlet holes 14 along a specific path. From the proximal end to the distal end of the needle body, the steam outlet holes 14 are spaced at certain intervals, allowing steam to be gradually released along the direction of travel as the puncture needle body 1 penetrates the tissue. Second, several steam outlet holes 14 are arranged at intervals around the center of the annular wall. In this case, these steam outlet holes 14 are evenly distributed in a circular shape with the center of the annular wall as the center. In practical applications, these two arrangements can be used individually or in combination to meet different medical scenarios and treatment needs. When the steam generator is activated, high-temperature, high-pressure steam is delivered to the annular wall through the channels inside the puncture needle body 1. At this time, each steam outlet hole 14, according to the predetermined arrangement and the pattern of ejection to the surrounding sides, accurately and evenly sprays steam into the surrounding tissue. Whether facing superficial or deep tissue, this design ensures that the steam effectively covers the target area, achieving a comprehensive therapeutic effect.

[0055] In this embodiment, the steam output method, which projects steam to all four sides, combined with the design of being arranged along the extension direction and around the center, enhances the steam's penetration ability and coverage area into the tissue. The steam output holes 14 arranged along the extension direction allow the steam to penetrate deeper into the tissue as the needle penetrates, expanding the treatment depth; the steam output holes 14 arranged around the center diffuse steam from different angles, increasing the treatment breadth. For example, when treating lesions with three-dimensional structures, this design allows steam to penetrate deep into the tissue from multiple directions, effectively treating tissues at different levels and locations, improving the thoroughness of the treatment. For lesions with irregular shapes, the steam output holes 14 arranged around the center can adjust the steam spray angle from multiple directions, better conforming to the tissue shape and achieving precise treatment. The steam output holes 14 arranged along the extension direction are suitable for treating lesion areas extending along the needle direction, such as elongated tumors.

[0056] Example 2

[0057] This embodiment provides a hot steam ablation puncture device. Compared with Embodiment 1, the basic structure of the hot steam ablation puncture device provided in this embodiment is the same as that in Embodiment 1, except that the setting of the steam output hole 14 is different. This embodiment will not describe the structure that is the same as that in Embodiment 1 again.

[0058] Furthermore, the needle tip of the puncture needle body 1 is provided with several steam output holes 14, which are arranged circumferentially around the axis of the puncture needle body 1. The direct steam output method ensures that the steam is evenly distributed around the target tissue. Multiple steam output holes 14 directly project steam from different points, allowing various parts of the target tissue to simultaneously receive steam of similar intensity and dosage, thus greatly improving the uniformity of treatment and ensuring that the entire treatment area achieves the desired therapeutic effect. The direct steam output method also gives the steam stronger directionality and impact force. Direct steam can penetrate deeper into the tissue and reach deeper lesions. The circumferentially spaced steam output holes 14 and the direct output method provide medical personnel with a more intuitive and convenient operating experience. Medical personnel can easily adjust the angle and position of the puncture needle body 1 according to treatment needs, ensuring that the steam is accurately sprayed onto the target tissue. At the same time, this design reduces operational errors caused by uneven steam output or difficulty in controlling the direction, improving the success rate and safety of treatment, and reducing the workload and operational difficulty for medical personnel. Direct steam output reduces the diffusion and loss of steam during propagation, allowing more steam to directly act on the target tissue and improving steam utilization.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A hot steam ablation puncture device, characterized in that, include: The puncture needle body (1) is provided with a steam release chamber (11), a fluid channel (12) and a light guide channel (13) inside. The front ends of the fluid channel (12) and the light guide channel (13) are connected to the steam release chamber (11). The fluid channel (12) is used to introduce liquid. The puncture needle body (1) is provided with a steam output hole (14) which is connected to the steam release chamber (11). The heating unit includes a laser fiber (2), which is inserted into the light guide channel (13) and the emitting end of the laser fiber (2) faces the steam release chamber (11).

2. The hot steam ablation puncture device according to claim 1, characterized in that, The puncture needle body (1) is provided with a plurality of fluid channels (12), which are arranged circumferentially with the light guide channel (13) as the center.

3. The hot steam ablation puncture device according to claim 1, characterized in that, The puncture needle body (1) is provided with a plurality of light guide channels (13), and each of the plurality of light guide channels (13) is provided with a laser fiber (2).

4. The hot steam ablation puncture device according to claim 1, characterized in that, The hot steam ablation puncture device also includes: A water inlet connector (3) with a water inlet (31) is sleeved on the tail end of the puncture needle body (1) and communicates with the fluid channel (12). One end of the laser fiber (2) is inserted through the water inlet connector (3) and extends out.

5. The hot steam ablation puncture device according to claim 1, characterized in that, The puncture needle body (1) is made of metal material.

6. The hot steam ablation puncture device according to claim 1, characterized in that, The inner surface of the vapor release chamber (11) is coated with an anti-coking coating, and / or the outer wall of the puncture needle body (1) is provided with a heat insulation layer.

7. The hot steam ablation puncture device according to claim 1, characterized in that, A thermal sensor is installed inside the puncture needle body (1).

8. The steam ablation puncture device according to any one of claims 1-7, characterized in that, The needle tip of the puncture needle body (1) is provided with a plurality of steam output holes (14), which are arranged circumferentially with the axis of the puncture needle body (1) as the center.

9. The steam ablation puncture device according to any one of claims 1-7, characterized in that, The annular wall of the puncture needle body (1) is provided with a plurality of steam output holes (14).

10. The steam ablation puncture device according to claim 9, characterized in that, A plurality of the steam output holes (14) are arranged at intervals along the extension direction of the puncture needle body (1); and / or a plurality of the steam output holes (14) are arranged at intervals around the center of the annular wall.

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