Steam treatment handle

Abstract

The steam treatment handle comprises a machine shell, a catheter, a puncture needle, an ejection mechanism and a locking mechanism, a first operation part is arranged on the machine shell, the catheter is installed at the front end of the machine shell, the puncture needle penetrates through the catheter in a sliding mode and is provided with an ejection position with the front end stretching out of the catheter and a retraction position retracting into the catheter, and the ejection mechanism is arranged on the machine shell. Comprising a first transmission part movably installed on the machine shell and a second transmission part arranged at the rear end of the puncture needle, the first operation part is in transmission connection with the puncture needle through the ejection mechanism and can drive the first transmission part to move and trigger the second transmission part, so that the puncture needle is switched to the ejection state, and the locking mechanism is provided with a locking position and an unlocking position. And during locking, the first transmission part is limited to prevent false triggering. Through cooperative protection of the locking mechanism and the ejection mechanism, the puncture needle is prevented from being ejected by mistaken touch, and the use safety of the steam treatment equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a steam therapy handpiece. 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 a steam therapy handpiece that utilizes steam for ablation treatment. This handpiece precisely releases steam heat onto target tissues for ablation via an interventional approach. 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). Specifically, the steam therapy handpiece has a retractable puncture needle connected to a heating device via tubing. The needle can be inserted into the body to deliver steam heat to the tissue for ablation treatment.

[0004] However, the ejection assembly of the puncture needle may be accidentally triggered during operation, causing the puncture needle to pop out unexpectedly, posing a safety hazard to both the operator and the patient. 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 steam therapy handle that prevents the puncture needle from accidentally popping out and improves safety performance.

[0006] To achieve the above objectives, the present invention provides a steam therapy handpiece, comprising:

[0007] A housing, on which a first operating part is provided;

[0008] A conduit is installed at the front end of the housing;

[0009] A puncture needle is slidably inserted into the catheter, the puncture needle having a pop-out position where its front end extends out of the catheter and a retracted position within the catheter;

[0010] An ejection mechanism, disposed in the housing, includes a first transmission member movably mounted in the housing and a second transmission member fixed to the rear end of the puncture needle. A first operating part is connected to the puncture needle via the ejection mechanism. When the first operating part is operated, it drives the first transmission member to generate a movement relative to the housing. During the movement of the first transmission member, the second transmission member is triggered, causing the puncture needle to switch from a retracted position to an ejected position.

[0011] A locking mechanism is provided on the housing. The locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the locked state, it restricts the movement of the first transmission member relative to the housing. When the locking mechanism is in the unlocked state, it releases the restriction on the first transmission member.

[0012] Optionally, the locking mechanism includes a knob and a stop block disposed on the knob. The knob is rotatably mounted on the housing and is partially located outside the housing. The stop block is located inside the housing and rotates with the knob.

[0013] When the locking mechanism is in the locked state, the stop block is located in the movement path of the first transmission member relative to the housing, thereby limiting the first transmission member. When the locking mechanism is in the unlocked state, the stop block avoids the movement path of the first transmission member, thereby releasing the limitation on the first transmission member.

[0014] Optionally, the housing is provided with an installation channel, the inner wall of the installation channel is provided with a first protrusion structure, the knob is partially inserted into the installation channel, and the outer periphery of the knob is provided with a second protrusion structure corresponding to the first protrusion structure. During the rotation stroke of the knob, the first protrusion structure and the second protrusion structure interfere with each other, so that the knob can be limited by the housing.

[0015] Optionally, the first transmission member has a first working position and a second working position during its active stroke relative to the housing. When the first operating part is operated, the first transmission member is driven to move from the first working position to the second working position. The second transmission member is slidably mounted on the housing in the front-back direction. A second elastic member is provided between the second transmission member and the housing.

[0016] When the first transmission member is in the first working position, it limits the second transmission member so that the puncture needle is held in the retracted position and the second elastic member is compressed. When the first transmission member moves to the second working position, it releases the limitation on the second transmission member, and the second elastic member extends to provide a driving force to move the puncture needle to the ejected position.

[0017] Optionally, the second transmission member includes a second operating part protruding from the outside of the housing, which, when pressed backward, can compress the second elastic element and drive the puncture needle from the ejected position back to the retracted position.

[0018] Optionally, a first elastic element is provided between the first transmission member and the housing, and the first elastic element provides a restoring force to drive the first transmission member from the second working position back to the first working position;

[0019] A locking structure is provided between the first transmission member and the second transmission member so that when the second transmission member is driven to move backward, it can automatically lock with the first transmission member located in the first working position, so that the second transmission member is held in a position where the second elastic member is compressed and the puncture needle is in the retracted position.

[0020] Optionally, the first transmission member is rotatably mounted on the housing to have a movable stroke for rotation between a first working position and a second working position;

[0021] The locking structure includes a first locking hook disposed on the first transmission member and a second locking hook disposed on the second transmission member. The first locking hook and the second locking hook are respectively provided with matching guide slopes. When the first transmission member is in the first working position and the second transmission member moves backward, the two guide slopes guide each other to slide, so that the first locking hook and the second locking hook lock each other.

[0022] Optionally, the first transmission component includes a rotating shaft and a first arm and a second arm extending outward from the rotating shaft, respectively, and the first locking hook is disposed on the first arm and fastened to the front of the second locking hook;

[0023] The first operating part is slidably mounted on the housing in the front-back direction and is located in front of the second arm. When the first operating part moves backward, it presses against the second arm to drive the first transmission member to rotate to the second working position, so that the first locking hook disengages from the second locking hook.

[0024] Optionally, the second transmission component includes a body and a guide block protruding from the body. The inner side of the housing is provided with a guide groove extending in the front-rear direction. The guide block is inserted into the guide groove and slidably mounted in the guide groove in the front-rear direction. The front and rear ends of the guide groove are respectively closed to limit the sliding stroke of the guide block.

[0025] Optionally, the steam therapy handle further includes a safety pin assembly, and the front end of the housing forms a mounting port;

[0026] The safety pin assembly includes a plug and a locking pin. The plug is detachably installed on the housing and seals the installation port. The plug is fixedly connected to the conduit. The puncture needle is slidably inserted through the plug in the front-back direction. The locking pin is inserted into the plug from the outside of the housing to fix the plug and the housing.

[0027] The technical solution provided by this invention has the following beneficial effects:

[0028] This invention provides a steam therapy handle, including a housing, a conduit, a puncture needle, an ejection mechanism, and a locking mechanism. The housing has a first operating part, the conduit is installed at the front end of the housing, and the puncture needle is slidably inserted through the conduit, having a pop-out position with its front end extending out of the conduit and a retracted position retracted within the conduit. The ejection mechanism is located in the housing and includes a first transmission component movably installed in the housing and a second transmission component located at the rear end of the puncture needle. The first operating part is connected to the puncture needle via the ejection mechanism, and can drive the first transmission component to move and trigger the second transmission component, causing the puncture needle to switch to the pop-out state. The locking mechanism has a locked position and an unlocked position, and when locked, it limits the first transmission component to prevent accidental triggering.

[0029] In the embodiments provided by the invention, the coordinated operation of the locking mechanism and the ejection mechanism prevents the puncture needle from being accidentally ejected from the mechanical structure, thus solving the safety hazard of the puncture needle being accidentally ejected due to misoperation of the existing steam therapy handle and greatly improving the safety of using the steam therapy handle. Attached Figure Description

[0030] 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.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the steam therapy handle provided by the present invention;

[0032] Figure 2 for Figure 1 A three-dimensional structural diagram of a steam therapy handpiece, with part of the casing not shown;

[0033] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0034] Figure 4 for Figure 1 A three-dimensional exploded view of the steam therapy handpiece;

[0035] Figure 5 for Figure 4 An enlarged schematic diagram of point B, in which the puncture needle is in the retracted position and the locking mechanism is in the locked state;

[0036] Figure 6 for Figure 4 An enlarged diagram of point B, showing the puncture needle in the ejected position and the locking mechanism in the unlocked state;

[0037] Figure 7 for Figure 4 A three-dimensional structural diagram of the first casing;

[0038] Figure 8 for Figure 4 A three-dimensional structural diagram of the second casing;

[0039] Figure 9 for Figure 2 A three-dimensional structural diagram of the heating device;

[0040] Figure 10 for Figure 9 Exploded view of the three-dimensional structure of the heating device;

[0041] Figure 11 for Figure 10 A schematic diagram of the assembly of the central pipe and coil;

[0042] Figure 12 for Figure 9 Side view of the heating device in the middle;

[0043] Figure 13 for Figure 12 Sectional view at point AA;

[0044] Figure 14 for Figure 9 Top view of the heating device;

[0045] Figure 15 for Figure 14 Sectional view at point BB.

[0046] Explanation of icon numbers:

[0047] 1000-Steam Therapy Handpiece;

[0048] 100 - Housing; 101 - First housing; 102 - Second housing; 110 - Mounting cavity; 101 - First operating part; 1011 - Third elastic element; 120 - Mounting channel; 121 - First protruding structure; 130 - Guide groove; 140 - Mounting port;

[0049] 200 - Heating device; 210 - Container; 211 - Cavity; 2111 - First section; 2112 - Second section; 212 - First inlet; 2121 - First pipeline; 213 - First outlet; 2131 - Second pipeline; 214 - First sidewall; 215 - Second sidewall; 216 - Third sidewall; 217 - Fourth sidewall; 220 - Pipeline; 221 - Second inlet; 222 - Second outlet; 223 - First pipe section; 224 - Second pipe section; 225 - First bend section; 226 - Second bend section; 227 - Gap; 230 - Coil; 231 - Wire; 240 - Guide plate; 241 - Micro-convex structure; 250 - Liquid level sensor; 260 - Liquid surface;

[0050] 300 - Catheter assembly; 310 - Puncture needle; 320 - Catheter;

[0051] 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;

[0052] 500 - Locking mechanism; 510 - Knob; 511 - Second protrusion structure; 520 - Stop;

[0053] 600 - Safety pin assembly; 610 - Blocking component; 620 - Locking pin.

[0054] 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

[0055] 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.

[0056] 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.

[0057] 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.

[0058] like Figure 1 and Figure 2 As shown, this embodiment provides a steam therapy handle 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, a catheter assembly 300, an ejection mechanism 400, a locking mechanism 500, and a safety pin mechanism 600.

[0059] The housing 100 serves as the overall support structure for the steam therapy handle 1000, and its interior forms a mounting cavity 100 for mounting the heating device 200 and the ejection mechanism 400, etc. A conduit assembly 300 is also provided at the front end of the housing 100. The conduit assembly 300 includes a conduit 320 and a puncture needle 310 inserted therein. 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 relatively slidably installed in the conduit 320, thus having a travel distance relative to or away from the housing 100. A steam channel is formed within the puncture needle 310. Specifically, under the action of the ejection mechanism 400, the puncture needle 310 has a pop-out position where its front end extends out of the conduit 320, and a retracted position within the conduit 320.

[0060] 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.

[0061] Please refer to the following: Figure 2 , Figure 3 , Figure 7 and Figure 8The front end of the housing 100 has an installation port 140. The safety pin assembly 600 includes a plug 610 and a locking pin 620. The plug 610 is detachably installed in the housing 100 and seals the installation port 140. The plug 610 is fixedly connected to the conduit 320. The puncture needle 310 is slidably inserted through the plug 610 in the front-rear direction. The locking pin 620 is inserted into the plug 610 from the outside of the housing 100 to fix the plug 610 and the housing 100.

[0062] 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 610 seals the installation port, and the rear end of the conduit 320 is inserted and fixed to the plug 610, so that the rear end of the puncture needle 310 passes through the plug 610 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 conduit 320 and the plug 610, and the rear end of the puncture needle 310 is driven by the ejection mechanism 400, so that it can switch between the ejected position and the retracted position relative to the conduit 320. The plug 610 is preferably made of elastic materials such as rubber or silicone, and is interference-fitted with the mounting port 140 to improve the sealing performance of the mounting port 140. It is equipped with a locking mouth, locking groove and other structures to cooperate with the locking pin 620. The end of the locking pin 620 may be equipped with anti-dislodgement structures such as cotter pins or elastic retaining rings to prevent the locking pin 620 from accidentally falling off.

[0063] In this embodiment, if an accident occurs, such as a malfunction of the ejection mechanism 400, preventing the puncture needle 310 from being properly pulled out through the operation of the steam therapy handle 1000, the operator can pull out the locking pin 620, causing the steam therapy handle 1000 to be divided into two separable parts. One part includes the plug 610 and the conduit 320 fixed to the plug 610, 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. At this time, the user can fix the plug 610 and then pull the housing 100 backward relative to the plug 610, causing the puncture needle 310 to move backward relative to the conduit 320, thus allowing it to be smoothly pulled out of the human tissue. Compared to directly pulling the handle backward, the puncture needle 310, guided by the conduit 320, can accurately leave the human body along the intervention direction, minimizing damage to the human body.

[0064] The present invention also provides an ejection mechanism 400 and a locking mechanism 500 that cooperate with the puncture needle 310. For example... Figures 4 to 6As 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.

[0065] 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.

[0066] 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.

[0067] This embodiment, by setting the locking mechanism 500 and the ejection mechanism 400 to work together, avoids the accidental ejection of the puncture needle 310 from a mechanical structure perspective, solves the safety hazard of the puncture needle 310 being accidentally ejected due to misoperation in the existing steam therapy handle 1000, and greatly improves the safety of the steam therapy handle 1000.

[0068] Please continue reading. Figures 4 to 6In 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 in a rotatable manner, and can be restricted to a specific position during its rotational stroke. Specifically, a portion of the knob 510 is located outside the housing 100, forming an operating end that is easy for the operator to grip 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.

[0069] 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.

[0070] 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.

[0071] Furthermore, please refer to the following: Figure 7 and Figure 8The 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.

[0072] 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.

[0073] 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.

[0074] Optionally, please refer to Figure 5 and Figure 6The 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] Please continue reading. Figures 4 to 6Furthermore, 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.

[0079] 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.

[0080] This embodiment achieves manual repositioning of the puncture needle 310 by setting a second operating part 422, which is intuitive and convenient, improves treatment efficiency, and simultaneously realizes energy storage of the second elastic element 421 during the repositioning process, eliminating the need for additional energy storage operations and simplifying the usage process.

[0081] 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.

[0082] 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.

[0083] Preferably, please refer to Figures 5 to 8 The 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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. This makes the steam therapy handle 1000 small in overall size and easy to hold and operate.

[0088] Please continue reading. Figures 9 to 15 The present invention also provides a heating device 200 for an ablation gun. The heating device 200 is fixed to the housing 100 by screws or clips and is used to stably generate high-temperature steam to meet the needs of ablation treatment. 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 accurately delivered to the lesion site through the steam channel. The heating device 200 includes a container 210, a pipe 220, and a coil 230. The container 210 is a sealed structure with a certain strength, and its interior forms a cavity 211 for containing medical liquid and the generated steam. The medical liquid can be sterile water, physiological saline, or other media suitable for ablation treatment. The container 210 has a first inlet 212 and a first outlet 213 that connect to the cavity 211. The first inlet 212 is connected to an external water supply device through a first pipe 2121, and the first outlet 213 is used to connect to the steam channel of the ablation gun through a high-temperature resistant second pipe 2131 to deliver the generated steam to the ablation gun.

[0089] The pipe 220 has a second inlet 221 and a second outlet 222. The second inlet 221 is connected to the first inlet 212 of the container 210 via a pipe 220 connector, allowing externally transported medical liquid to enter the pipe 220 through the first inlet 212 and the second inlet 221. The second outlet 222 is located within the cavity 211, allowing the fluid (a mixture of water and steam) formed after being heated through the pipe 220 to be injected into the cavity 211. The pipe 220 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 stainless steel or ferritic stainless steel. This type of material can efficiently generate heat by inducing eddy currents in an alternating magnetic field. Figure 11 As shown, coil 230 is wound around the outer circumference of pipe 220. Coil 230 is made of copper enameled wire (preferably nickel-chromium alloy or iron-chromium-aluminum alloy). Its outer surface, which contacts the pipe, is covered with an insulating and waterproof layer, which can be made of polytetrafluoroethylene (PTFE). This effectively isolates the pipe from coil 230, preventing short circuits or leakage due to contact with the metal pipe, and also allows it to withstand the high temperatures during steam generation. Both ends of coil 230 extend to the outside of container 210 via wires 231 for connecting to an external high-frequency inverter power supply. The high-frequency inverter power supply provides high-frequency alternating current to coil 230, causing it to generate a strong alternating magnetic field. Pipe 220 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 220, causing it to be electromagnetically heated and rapidly generating steam that is discharged into container 211.

[0090] When the heating device 200 is working, such as Figure 15 As shown, a liquid surface 260 forms within the cavity 211 due to the liquid flowing in from the pipe 220. It is understood that in actual use, this liquid surface 260 may fluctuate within a certain range. In this embodiment, the liquid surface 260 is assumed to be the position of the water surface within the cavity 211 when the ablation gun is in an upright, stationary state. The area above the liquid surface 260 is the first partition 2111, used to contain steam, and the area below the liquid surface 260 is the second partition 2112, used to contain unevaporated liquid. The first outlet 213 of the pipe 220 is directly connected to the first partition 2111, ensuring that steam can be discharged directly without passing through the liquid. The second outlet 222 of the pipe 220 is located in the first partition 2111, ensuring that steam generated by heating the liquid within the pipe 220 can be directly discharged into the first partition 2111. Meanwhile, the pipe 220 is located at least partially in the first partition 2111, that is, it is located entirely or partially in the first partition 2111, so that the outer surface of the pipe 220 can contact the steam in the first partition 2111, providing secondary heating for the steam, thereby reducing the liquid content of the steam in the second partition 2112, so that the steam supplied from the first outlet 213 to the steam channel of the puncture needle 310 has less liquid content and a more stable temperature.

[0091] In this embodiment, the magnetically conductive pipe 220, together with the coil 230 wound around its outer periphery and an external high-frequency inverter power supply, forms a high-efficiency electromagnetic heating circuit. The high-frequency alternating current causes the coil 230 to generate a strong alternating magnetic field. The pipe 220 induces eddy currents in the magnetic field to directly generate heat. The heat does not need to be transferred through an intermediate medium and can directly act on the medical liquid inside the pipe 220, resulting in high heating efficiency and rapid steam generation. The design of the first section 2111 and the second section 2112 of the cavity 211, combined with the structure that the second outlet 222 is located in the first section 2111 and the first outlet 213 is directly connected to the first section 2111, allows the steam in the cavity 211 to be reheated through the outer surface of the pipe 220, reducing the amount of water droplets carried by the steam and forming steam with lower liquid content and more stable temperature that is discharged from the first outlet 213. The heating device 200 provided in this embodiment can supply steam with a 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 steam, while ensuring that the ablation temperature of the targeted lesion site is stable within the effective range, avoiding the impact of temperature fluctuations on the treatment effect.

[0092] Based on the previous embodiment, preferably, please refer to Figure 15Pipe 220 is partially located in the first zone 2111 and partially in the second zone 2112. This arrangement allows pipe 220 to heat the internal liquid through its submerged portion and to contact the steam through its portion in the steam. The submerged portion of pipe 220 is continuously cooled by the liquid, preventing the risk of dry burning due to localized overheating and improving the safety of the heating device 200. In practical applications, the proportion of pipe 220 submerged in the second zone 2112 can be adjusted according to heating power requirements, for example, by submerging part or all of the length of pipe 220 in the liquid. The partial location of pipe 220 in the first zone 2111 ensures secondary heating of the steam through its outer surface, maintaining a low liquid content in the steam within the second zone 2112. 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.

[0093] Furthermore, please continue to refer to [the relevant sources]. Figure 15 The pipe 220 includes a first pipe section 223 adjacent to the second inlet 221 and a second pipe section 224 adjacent to the second outlet 222. The first pipe section 223 extends horizontally and is relatively long. The upper half of the first pipe section 223 is located in the first partition 2111, and the lower half is immersed in the liquid in the second partition 2112. This horizontally extended structure increases the contact area between the first pipe section 223 and the liquid and steam. The second pipe section 224 extends upward from the end of the first pipe section 223 to the first partition 2111. It is relatively short, and the second outlet 222 is located at the top of the second pipe section 224, within the first partition 2111. The length ratio of the first pipe section 223 to the second pipe section 224 can be selected according to the heating efficiency requirements. A larger ratio results in a longer immersion length of the first pipe section 223 in the liquid, leading to better protection against localized high temperatures. Preferably, the ratio of the length of the first pipe segment 223 to the length of the second pipe segment 224 is greater than or equal to, and more preferably greater than or equal to, thus ensuring that the length of the first pipe segment 223 is much greater than that of the second pipe segment 224. In practical applications, the horizontal extension direction of the first pipe segment 223 can be adjusted according to the shape of the cavity 211, for example, extending along the length or width direction of the cavity 211. It is preferable to use a serpentine extension with multiple bends to maximize the length of the first pipe segment 223.

[0094] In this embodiment, the design of the first pipe section 223 extending horizontally with its upper half located in the first partition 2111 and its lower half located in the second partition 2112 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 224 extending upwards to the first partition 2111 ensures that the second outlet 222 is reliably located in the first partition 2111, guaranteeing that the steam generated in the pipe 220 is directly discharged into the first partition 2111, 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 220, ensuring the long-term stable operation of the heating device 200.

[0095] For further information, please refer to [link / reference]. Figure 10 Preferably, the first outlet 213 is located at the top of the container 210, and / or the first inlet 212 is located on the side of the container 210. Specifically, since steam has the characteristic of flowing upwards, the first outlet 213 at the top can follow the natural flow direction of steam, reduce the retention of steam in the cavity 211, and prevent steam from re-contacting the liquid and carrying water droplets due to excessive retention time. The first inlet 212 is located on the side of the container 210, which can ensure that the first pipe section 223 extends in the horizontal direction. In addition, a one-way valve can be installed at the first inlet 212 to prevent liquid or steam in the cavity 211 from flowing back from the pipe 220. The first outlet 213 can also be located on the side wall of the top of the container 210, 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.

[0096] Please continue reading. Figures 12 to 15 The container 210 includes a first sidewall 214 and a second sidewall 215 that are arranged opposite to each other in a first direction. That is, the first sidewall 214 and the second sidewall 215 are two opposite sidewalls of the container 210 in the horizontal direction. For example, when the container 210 is a cuboid, the front and rear sidewalls or the left and right sidewalls can be used as the first sidewall 214 and the second sidewall 215 respectively.

[0097] 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 is stationary and fixed in a conventional posture.

[0098] The first outlet 213 is located near the first sidewall 214, and the second outlet 222 is located near the second sidewall 215. This ensures that steam exiting from the second outlet 222 must travel a longer path from the second sidewall 215 to the first sidewall 214 before reaching the first outlet 213 for discharge. In a preferred embodiment, the first outlet 213 and the second outlet 222 can be located diagonally opposite each other within the cavity 211, i.e., at the two corners with the greatest straight-line distance.

[0099] In this embodiment, by placing the first outlet 213 and the second outlet 222 near the first sidewall 214 and the second sidewall 215, respectively, which are opposite in the first direction, the flow path of steam within the cavity 211 is extended. This allows the steam to have more time to contact the outer surface of the pipe 220 located in the first partition 2111 during its flow from the second outlet 222 to the first outlet 213, 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 213 and the second outlet 222 enhances the sufficiency of secondary steam heating and the water droplet settling effect, further reducing the liquid content of the steam.

[0100] Please refer to the following: Figure 13 and Figure 15 The pipe 220 is bent within the cavity 211, forming a first bent section 225 and a second bent section 226 arranged side-by-side and adjacent to each other. The first bent section 225 and the second bent section 226 extend along a second direction, and the coil 230 wound around the first bent section 225 and the coil 230 wound around the second bent section 226 have opposite winding directions. Multiple first bent sections and multiple second bent sections can be designed, and they are arranged alternately in the first direction and connected to each other sequentially through the bent pipe 220.

[0101] In this embodiment, the pipe 220 extends along a second direction through a first bend 225 and a second bend 226, which are side-by-side and adjacent to each other. This increases the total length of the pipe 220 within the limited cavity 211, thereby increasing the contact area with liquids and steam. The coils 230 are wound in opposite directions: when the coil 230 wound around the first bend 225 is clockwise, the coil 230 wound around the second bend 226 is counterclockwise, and vice versa. This winding design improves the magnetic field interference between adjacent coils 230, preventing uneven current distribution and increased energy loss.

[0102] Optionally, please continue to refer to [the relevant literature / reference]. Figure 13The container 210 has multiple first bending segments 225 and second bending segments 226, which are arranged alternately along a first direction. A gap 227 is defined between adjacent first bending segments 225 and second bending segments 226 in the first direction. The container 210 includes a third sidewall 216 and a fourth sidewall 217 arranged opposite each other in a second direction. Multiple guide plates 240 protrude into the cavity 211 from the third sidewall 216 and the fourth sidewall 217, and are inserted into the gaps 227 one-to-one. The upper end of each guide plate 240 extends to the top of the cavity 211, and the lower end extends at least to the second partition 2112. The guide plates 240 can be made of the same material as the container 210 to ensure structural strength and high-temperature resistance. Preferably, they are integrally formed with or welded to the interior of the container 210. The first outlet 213 is located between the third side wall 216 and the guide plate 240 closest to the third side wall 216, and the second outlet 222 is located between the fourth side wall 217 and the guide plate 240 closest to the fourth side wall 217.

[0103] Specifically, multiple first bends 225 and second bends 226 are arranged alternately along the first direction to form a serpentine pipe structure 220, with gaps 227 between adjacent bends. The third sidewall 216 and the fourth sidewall 217 are two opposing sidewalls of the container 210 in the second direction. Guide plates 240, protruding from both sides into the cavity 211, are inserted into the gaps 227, extending vertically to the top of the cavity 211 and the second partition 2112, thus orderly dividing the cavity 211 and guiding the flow of steam discharged from the second outlet 222 within the cavity 211. Specifically, after steam is discharged from the second outlet 222, it must be obstructed by the guide plates 240 and flow serpentinely along the path from the second outlet 222 to the first outlet 213 of the pipe 220, eventually reaching the first outlet 213 for discharge. During this flow, the steam essentially passes over the outer surfaces of all bends. Ultimately, during the flow process, the secondary heating function of the pipe 220 and the high-frequency / radio frequency coil 230 gradually reduces the water droplets in the steam, resulting in the lowest possible liquid content in the steam output from the first outlet 213. This prevents the steam from flowing disorderly within the cavity 211, which could cause fluctuations in the liquid content of the steam output from the first outlet 213.

[0104] In this embodiment, the design of the guide plate 240 with the gap 227 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 220 and receive secondary heating, maximizing the evaporation of water droplets in the steam.

[0105] In a preferred embodiment, the guide plate 240 has an integrally formed micro-protrusion structure 241 on the outer surface of the first partition 2111 for adsorbing liquid in the fluid. The micro-protrusion structure 241 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 2112. The hemispherical micro-protrusion array can increase the contact area between the guide plate 240 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 241 to further improve the adsorption and guiding effect of water droplets.

[0106] In this embodiment, the micro-protrusion structure 241 on the outer surface of the guide plate 240 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 213. The water droplets adsorbed by the micro-protrusion structure 241 will flow along the guide plate 240 to the second section 2112 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 and ensuring that the steam ultimately delivered to the ablation gun is high-quality dry steam, completely avoiding tissue burns caused by water droplets.

[0107] A liquid level sensor 250 is also installed inside the cavity 211. The heating device 200 also includes a controller, which is electrically connected to the liquid level sensor 250 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 250 detects that the liquid level in the cavity 211 has reached the adjacent point between the first partition 2111 and the second partition 2112. The liquid level sensor 250 is installed on the side wall of the cavity 211, and its detection position corresponds to the adjacent point between the first partition 2111 and the second partition 2112 (i.e., the liquid surface 260 position), and is used to detect the liquid level height in the cavity 211 in real time. The controller is a circuit board with signal processing and control functions, which can be integrated into the mounting cavity 110 of the ablation gun. It receives the detection signal from the liquid level sensor 250 and controls the start and stop of the high-frequency inverter power supply according to the signal.

[0108] When the liquid level in cavity 211 is lower than the adjacent level, the controller controls the high-frequency inverter to stop supplying power, preventing pipe 220 from drying out due to lack of liquid contact. When external liquid is injected into cavity 211 through the first inlet 212 and the second inlet 221, and the liquid level rises to the adjacent level, the liquid level sensor 250 sends a normal liquid level signal to the controller. The controller then controls the high-frequency inverter to start supplying power, and the coil 230 generates an alternating magnetic field, causing eddy currents to be induced in pipe 220, 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 260, the controller controls the high-frequency inverter to stop supplying power, further improving safety.

[0109] This embodiment, through the linkage control of the liquid level sensor 250 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 220 is partially submerged in liquid. This fundamentally avoids the pipe 220 from dry burning, protects the pipe 220 and the coil 230 from damage, and extends the service life of the heating device 200.

[0110] 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 content of the present invention specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A steam treatment handle, characterized in that, include: A housing, on which a first operating part is provided; A conduit is installed at the front end of the housing; A puncture needle is slidably inserted into the catheter, the puncture needle having a pop-out position where its front end extends out of the catheter and a retracted position within the catheter; An ejection mechanism, disposed in the housing, includes a first transmission member movably mounted in the housing and a second transmission member fixed to the rear end of the puncture needle. A first operating part is connected to the puncture needle via the ejection mechanism. When the first operating part is operated, it drives the first transmission member to generate a movement relative to the housing. During the movement of the first transmission member, the second transmission member is triggered, causing the puncture needle to switch from a retracted position to an ejected position. A locking mechanism is provided on the housing. The locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the locked state, it restricts the movement of the first transmission member relative to the housing. When the locking mechanism is in the unlocked state, it releases the restriction on the first transmission member.

2. The steam therapy handle of claim 1, wherein, The locking mechanism includes a knob and a stop block disposed on the knob. The knob is rotatably mounted on the housing and is partially located outside the housing. The stop block is located inside the housing and rotates with the knob. When the locking mechanism is in the locked state, the stop block is located in the movement path of the first transmission member relative to the housing, thereby limiting the first transmission member. When the locking mechanism is in the unlocked state, the stop block avoids the movement path of the first transmission member, thereby releasing the limitation on the first transmission member.

3. The steam therapy handle of claim 2, wherein, The housing is provided with an installation channel, and the inner wall of the installation channel is provided with a first protrusion structure. The knob is partially inserted into the installation channel, and the outer periphery of the knob is provided with a second protrusion structure corresponding to the first protrusion structure. During the rotation stroke of the knob, the first protrusion structure and the second protrusion structure interfere with each other, so that the knob can be limited by the housing.

4. The steam therapy handle as described in any one of claims 1 to 3, characterized in that, The first transmission member has a first working position and a second working position during its active stroke relative to the housing. When the first operating part is operated, the first transmission member is driven to move from the first working position to the second working position. The second transmission member is slidably mounted on the housing in the front-back direction. A second elastic member is provided between the second transmission member and the housing. When the first transmission member is in the first working position, the second transmission member is limited so that the puncture needle is held in the retracted position and the second elastic member is compressed. When the first transmission member moves to the second working position, the limitation on the second transmission member is released and the second elastic member extends to provide a driving force to move the puncture needle to the ejected position.

5. The steam therapy handpiece as described in claim 4, characterized in that, The second transmission member includes a second operating part protruding from the outside of the housing. When the second operating part is pressed backward, it can compress the second elastic element and drive the puncture needle from the ejected position back to the retracted position.

6. The steam therapy handpiece as described in claim 5, characterized in that, A first elastic element is provided between the first transmission member and the housing, and the first elastic element provides a restoring force to drive the first transmission member from the second working position back to the first working position; A locking structure is provided between the first transmission member and the second transmission member so that when the second transmission member is driven to move backward, it can automatically lock with the first transmission member located in the first working position, so that the second transmission member is held in a position where the second elastic member is compressed and the puncture needle is in the retracted position.

7. The steam therapy handpiece as described in claim 6, characterized in that, The first transmission component is rotatably mounted on the housing to have a movable stroke for rotation between a first working position and a second working position; The locking structure includes a first locking hook disposed on the first transmission member and a second locking hook disposed on the second transmission member. The first locking hook and the second locking hook are respectively provided with matching guide slopes. When the first transmission member is in the first working position and the second transmission member moves backward, the two guide slopes guide each other to slide, so that the first locking hook and the second locking hook lock each other.

8. The steam therapy handpiece as described in claim 7, characterized in that, The first transmission component includes a rotating shaft and a first arm and a second arm extending outward from the rotating shaft, respectively. The first locking hook is disposed on the first arm and is fastened to the front of the second locking hook. The first operating part is slidably mounted on the housing in the front-back direction and is located in front of the second arm. When the first operating part moves backward, it presses against the second arm to drive the first transmission member to rotate to the second working position, so that the first locking hook disengages from the second locking hook.

9. The steam therapy handpiece as described in claim 4, characterized in that, The second transmission component includes a body and a guide block protruding from the body. The inner side of the housing is provided with a guide groove extending in the front-rear direction. The guide block is inserted into the guide groove and is slidably installed in the guide groove in the front-rear direction. The front and rear ends of the guide groove are respectively closed to limit the sliding stroke of the guide block.

10. The steam therapy handle as described in any one of claims 1 to 3, characterized in that, The steam therapy handle also includes a safety pin assembly, and the front end of the housing forms a mounting port; The safety pin assembly includes a plug and a locking pin. The plug is detachably installed on the housing and seals the installation port. The plug is fixedly connected to the conduit. The puncture needle is slidably inserted through the plug in the front-back direction. The locking pin is inserted into the plug from the outside of the housing to fix the plug and the housing.

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