Steam ablation handle for hysteromyoma

Abstract

The invention relates to the technical field of steam ablation, and provides a steam ablation handle for hysteromyoma, the steam ablation handle comprises a handle shell, a catheter assembly and a puncture needle, the catheter assembly comprises a needle inlet tube; the puncture needle can move relative to the needle inlet tube and comprises a metal needle tube and a thermal insulation tube, the thermal insulation tube is sleeved with the metal needle tube, and the thermal insulation tube is used for introducing steam; the heat preservation pipe is provided with an air outlet part which communicates with the interior of the heat preservation pipe, and the metal needle pipe is provided with an avoiding part. The avoiding part corresponds to the air outlet part and avoids an air outlet path of the air outlet part. High-strength puncture is achieved through the metal needle tube, efficient steam conveying is guaranteed through the heat preservation tube, accurate energy release is guaranteed through the receding part and the air outlet part which are accurately matched, the multi-dimensional synergistic effect is achieved, and the inherent contradiction between the puncture capacity and the steam heat efficiency of an existing puncture needle is successfully solved; a technical means which is reliable in structure, efficient in performance and safe to operate is provided for medical operation needing to meet penetrating power and steam energy at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of steam ablation, and in particular to a steam ablation handle for uterine fibroids. Background Art

[0002] Uterine fibroids are common benign gynecological tumors. Traditional treatments include medication, laparoscopic / open surgical resection, and physical ablation methods such as focused ultrasound (HIFU). In recent years, steam ablation technology has been gradually adopted in clinical practice due to its advantages of minimal invasiveness and rapid recovery. Its principle is to directly apply high-temperature steam to the lesion tissue, inducing protein denaturation and achieving ablation.

[0003] In conventional techniques, steam ablation for uterine fibroids can easily lead to heat loss when steam is delivered through metal needles, significantly reducing the therapeutic effect. Furthermore, because some fibroids become as hard as gums or forehead after calcification or fibrosis, using medical plastic puncture needles for steam energy delivery can also result in insufficient rigidity, leading to puncture failure or deformation. Summary of the Invention

[0004] The present invention provides a steam ablation handle for uterine fibroids, which is used to solve the problems of deformation of the puncture needle due to puncture hardness and loss of energy during transmission in the related art.

[0005] The present invention provides a steam ablation handle for uterine fibroids, comprising: handle housing; A catheter assembly is fixedly connected to the handle housing, and the catheter assembly includes a needle inlet tube; A puncture needle is provided to cooperate with the needle insertion tube and is movable relative to the needle insertion tube. The puncture needle comprises a metal needle tube and a heat preservation tube. The metal needle tube is externally fitted into the heat preservation tube, and the heat preservation tube is used to allow steam to pass through. The end of the metal needle tube away from the handle housing is a puncture tip. The heat preservation tube is provided with an air outlet portion, the air outlet portion is connected to the interior of the heat preservation tube, and the metal needle tube is provided with a avoidance portion, the avoidance portion is close to and spaced apart from one side of the puncture tip; The avoidance portion and the air outlet portion are both arranged away from the handle housing. The avoidance portion is arranged corresponding to the air outlet portion and avoids the air outlet path of the air outlet portion.

[0006] According to a steam ablation handle for uterine fibroids provided by the present invention, the air outlet portion includes an air outlet hole, the avoidance portion includes an air outlet waist groove arranged along the length direction of the metal needle tube, and the air outlet hole is arranged corresponding to the hollow part of the air outlet waist groove.

[0007] According to a steam ablation handle for uterine fibroids provided by the present invention, there are multiple air outlet holes, and the multiple air outlet holes are evenly distributed along the length direction of the side wall of the insulation tube, and the multiple air outlet holes are arranged corresponding to the hollow part of the air outlet waist groove.

[0008] According to the steam ablation handle for uterine fibroids provided by the present invention, the air outlet portions are in three groups, and the three groups of air outlet portions surround and are evenly distributed on the side wall of the insulation tube; There are three groups of avoidance portions, and the three groups of avoidance portions surround and are evenly distributed on the side wall of the metal needle tube; The air outlet portions and the avoidance portions are arranged in a one-to-one correspondence.

[0009] According to the steam ablation handle for uterine fibroids provided by the present invention, the metal needle tube is provided with a glue injection hole, and the glue injection hole is used to inject glue between the metal needle tube and the insulation tube to form an adhesive layer between the metal needle tube and the insulation tube for connecting the two; The avoidance portion is located between the puncture tip and the glue injection hole, and the three are arranged at intervals.

[0010] According to the steam ablation handle for uterine fibroids provided by the present invention, the metal needle tube is a stainless steel tube, and / or the insulation tube is a PEEK tube.

[0011] A steam ablation handle for uterine fibroids provided by the present invention further includes a puncture sliding assembly, wherein the puncture sliding assembly is slidably connected to the handle housing, and the puncture needle is fixedly connected to a part of the structure of the puncture sliding assembly; The handle housing is further provided with a braking structure and a puncture locking structure, wherein the braking structure is fixed relative to the handle housing, and the puncture locking structure is slidable relative to the handle housing, and the puncture locking structure is fixedly connected to another part of the puncture sliding assembly, and the puncture locking structure is adapted to drive the puncture sliding assembly to cooperate with the braking structure, so that the puncture sliding assembly switches between a locked state and an unlocked state; In the locked state, the puncture sliding assembly is in fixed contact with the braking structure, and the puncture sliding assembly and the puncture needle are fixed relative to the handle housing; In the unlocked state, the puncture sliding assembly is separated from the braking structure, and the puncture sliding assembly drives the puncture needle to slide relative to the handle housing.

[0012] According to a steam ablation handle for uterine fibroids provided by the present invention, the puncture sliding assembly includes: a sliding member slidably connected to the handle housing, wherein the sliding member is fixedly connected to the puncture needle; The limiting member includes a sliding portion, a limiting portion, and an operating portion, wherein the sliding portion is slidably connected to the sliding member, the limiting portion is detachably plugged into the braking structure, the operating portion is transmission-connected to the puncture locking structure, and the operating portion is adapted to drive the limiting portion out of contact with the braking structure; an elastic member, disposed between the sliding portion and the sliding member, and configured to drive the limiting member to return to a position where it is plugged into the braking structure; The limiting portion is arranged perpendicular to the operating portion, the sliding member moves along a first direction, and the operating portion, the sliding portion, the limiting portion and the elastic member move along a second direction, and the first direction is perpendicular to the second direction.

[0013] According to a steam ablation handle for uterine fibroids provided by the present invention, the sliding member is provided with a sliding groove and a guide channel, the guide channel is connected to the sliding groove, and the width of the sliding groove is greater than that of the guide channel; The limiting member further includes a guide portion, which is provided on one side of the operating portion, and the two are aligned toward the end surface of the sliding portion. The width of the operating portion is greater than the width of the guide portion. The operating portion and the sliding groove are both adapted in size, and the guide portion and the guide channel are both adapted in size. One end of the elastic member abuts against the operating portion and the guide portion, and the other end abuts against the sliding member.

[0014] According to the steam ablation handle for uterine fibroids provided by the present invention, the puncture locking structure includes a main button and a sub-button, and the sub-button is slidably connected to the handle housing; The main button is slidably connected to the sub-button, the sliding direction of the main button is perpendicular to the sliding direction of the sub-button, and one end of the main button facing the handle housing is fixedly connected to the limiter; The braking structure includes a braking portion, the braking portion includes a plurality of tooth-shaped grooves, and the plurality of tooth-shaped grooves are evenly distributed along the movement direction of the sliding member; The limiting portion is a clamping protrusion, and the clamping protrusion is clamped and matched with one of the tooth-shaped grooves to limit the movement of the sliding member.

[0015] According to the steam ablation handle for uterine fibroids provided by the present invention, the braking parts are divided into two groups, and the two groups of braking parts are arranged at intervals; The limiting members and the elastic members are each provided in two groups, the two groups of limiting members being located on opposite sides of the sliding member, and a group of elastic members being arranged between the sliding portion and the sliding member of each group of limiting members; The limiting parts of the two groups of limiting members are matched with the two groups of braking parts in a one-to-one correspondence, and the puncture needle is located between the two groups of limiting members.

[0016] A steam ablation handle for uterine fibroids provided by the present invention further includes a sealing component, the sealing component comprising: A fixed cover body is fixedly connected to the handle housing, and the fixed cover body is provided with a tube passage, and the fitting portion of the needle tube and the puncture needle is located in the tube passage; a first sealing ring, located in the tube passage, and sleeved on the needle inlet tube to seal a gap between the needle inlet tube and an inner wall of the tube passage; The second sealing ring is located in the tube passage and is sleeved on the metal needle tube to seal the gap between the puncture needle and the inner wall of the tube passage.

[0017] According to a steam ablation handle for uterine fibroids provided by the present invention, the fixed cover body includes a first fixed cover and a second fixed cover, the first fixed cover is fixedly connected to the handle housing, and the second fixed cover is plugged into the first fixed cover; The first fixing cover is provided with a first through hole and a first concave cavity communicating with the first through hole, the metal needle tube is adapted to fit into the first through hole, the inner side wall of the first sealing ring abuts against the metal needle tube, and the outer side wall of the first sealing ring abuts against the inner wall of the first concave cavity; The second fixing cover is provided with a second through hole and a second concave cavity communicating with the second through hole, the needle inlet tube and the second through hole are adapted to each other, the inner side wall of the second sealing ring abuts against the needle inlet tube, and the outer side wall of the second sealing ring abuts against the inner wall of the second concave cavity; The first through hole, the first concave cavity, the second through hole and the second concave cavity are sequentially connected to form the through-tube channel.

[0018] The steam ablation handle for uterine fibroids provided by the present invention adopts a puncture needle structure designed by combining a metal needle tube and a thermal insulation tube. The inherent high strength and high hardness of the metal needle tube made of metal material are utilized to significantly improve the overall rigidity of the puncture needle, ensuring that the puncture tip can stably and smoothly pierce some calcified or fibrotic fibroids, etc.; the thermal insulation tube constructs a closed channel with low thermal conductivity, which greatly reduces the heat loss of steam during the transportation process, ensuring that high-temperature, high-energy steam can be delivered to the working area near the puncture tip with minimal heat attenuation, thereby maximizing the utilization efficiency and treatment effect of the steam.

[0019] The shape and position of the avoidance part on the metal needle tube strictly correspond to the air outlet part, and the steam output channel is accurately reserved, ensuring that the steam flow released from the air outlet part of the insulation tube can be directly and unobstructedly sprayed toward the target tissue along the expected path, avoiding energy dissipation, direction deviation or reduced injection efficiency caused by metal wall obstruction, and ensuring the focusing, controllable and efficient transmission of steam energy.

[0020] Therefore, high-strength puncture is achieved through the metal needle tube, the insulation tube ensures efficient steam delivery, and the precisely coordinated avoidance part and the air outlet part ensure accurate energy release. The multi-dimensional synergistic effect successfully solves the inherent contradiction between the existing puncture needle in puncture ability and steam thermal efficiency, and provides a technical means with reliable structure, efficient performance and safe operation for medical operations that need to meet both penetration force and steam energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram showing that the puncture tip of the puncture needle of the steam ablation handle provided by the present invention is located in the needle insertion tube.

[0023] Figure 2 It is a schematic structural diagram of the puncture tip of the puncture needle of the steam ablation handle provided by the present invention extending into the needle tube.

[0024] Figure 3 This is a schematic diagram of the internal structure of the steam ablation handle provided by the present invention from one perspective.

[0025] Figure 4 This is a schematic diagram of the internal structure of the steam ablation handle provided by the present invention from another perspective.

[0026] Figure 5 It is a cross-sectional schematic diagram of the steam ablation handle provided by the present invention.

[0027] Figure 6 yes Figure 5 A magnified schematic diagram of the structure at A in FIG.

[0028] Figure 7 It is a structural diagram of the puncture sliding component.

[0029] Figure 8 It is a structural diagram of the puncture locking structure.

[0030] Figure 9It is a schematic diagram of the structure of the metal needle tube and the insulation tube of the puncture needle.

[0031] Figure 10 It is a structural schematic diagram of the catheter assembly.

[0032] Reference numerals: 100, handle housing; 110, first housing; 111, guide rail; 120, second housing; 200, catheter assembly; 210, needle inlet tube; 220, flushing tube; 230, outer protective tube; 240, positioning piece; 300, puncture needle; 310, metal needle tube; 311, puncture tip; 312, avoidance portion; 313, glue injection hole; 320, insulation tube; 321, air outlet; 400, puncture sliding assembly; 410, sliding member; 411, sliding groove; 412, guide channel; 413, mounting groove; 414, sliding groove; 420, limiter; 421, sliding portion; 422, limiter; 423, operating portion; 430, elastic member; 424, guide portion; 425, pre-installed boss; 500, brake structure; 510, brake part; 600, puncture locking structure; 610, main button; 611, pre-installed notch; 620, secondary button; 700, sealing assembly; 710, fixed cover; 711, pipe passage; 712, first fixed cover; 7121, first through hole; 7122, first concave cavity; 713, second fixed cover; 7131, second through hole; 7132, second concave cavity; 720, first sealing ring; 730, second sealing ring; 810, heating module; 820, sterile water pipe; 830, wire; 910, displacement sensor; 920, joystick assembly; 921, joystick sensor; 922, joystick cap. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0034] The following combination Figures 1-10The steam ablation handle for uterine fibroids of the present invention includes a handle housing 100 , a catheter assembly 200 , a puncture needle 300 , a puncture sliding assembly 400 , a puncture locking structure 600 , a heating module 810 and a displacement sensor 910 .

[0035] Reference Figures 1 to 4 In some examples of the present invention, the catheter assembly 200 is fixedly connected to the handle housing 100. The catheter assembly 200 includes a needle insertion tube 210. The puncture needle 300 is inserted and matched with the needle insertion tube 210, and the puncture needle 300 is movable relative to the needle insertion tube 210. The puncture needle 300 includes a metal needle tube 310 and a heat preservation tube 320. The metal needle tube 310 is sheathed in the heat preservation tube 320. The heat preservation tube 320 is used to pass steam. The end of the metal needle tube 310 away from the handle housing 100 is a puncture tip 311. Reference Figure 2 and Figure 9 The heat preservation tube 320 is provided with an air outlet 321, the air outlet 321 is connected to the interior of the heat preservation tube 320, and the metal needle tube 310 is provided with an avoidance portion 312, and the avoidance portion 312 is close to and spaced apart from one side of the puncture tip 311; The avoidance portion 312 and the air outlet portion 321 are both arranged away from the handle housing 100 . The avoidance portion 312 is arranged corresponding to the air outlet portion 321 and avoids the air outlet path of the air outlet portion 321 .

[0036] The steam ablation handle for uterine fibroids provided by the present invention has a puncture needle 300 that adopts a structure designed by combining a metal needle tube 310 and an insulation tube 320. The inherent high strength and high hardness of the metal needle tube 310 made of metal material significantly improve the overall rigidity of the puncture needle 300, ensuring that the puncture tip 311 can stably and smoothly pierce some calcified or fibrotic fibroids; the insulation tube 320 constructs a closed channel with low thermal conductivity, which greatly reduces the heat loss of steam during the transportation process, ensuring that high-temperature, high-energy steam can be delivered to the working area near the puncture tip 311 with minimal heat attenuation, thereby maximizing the utilization efficiency and treatment effect of the steam.

[0037] The shape and position of the avoidance portion 312 on the metal needle tube 310 strictly correspond to the air outlet portion 321, and an output channel for steam is accurately reserved, ensuring that the steam flow released from the air outlet portion 321 of the insulation tube 320 can be directly and unobstructedly sprayed toward the target tissue along the intended path, avoiding energy dissipation, direction deviation or reduced injection efficiency caused by obstruction of the metal wall, and ensuring the focusing, controllable and efficient transmission of steam energy.

[0038] Therefore, high-strength puncture is achieved through the metal needle tube 310, the insulation tube 320 ensures efficient steam delivery, and the precisely coordinated avoidance part 312 and the air outlet part 321 ensure accurate energy release. The multi-dimensional synergistic effect successfully solves the inherent contradiction between the existing puncture needle 300 in puncture ability and steam thermal efficiency, and provides a technical means with reliable structure, efficient performance and safe operation for medical operations that need to meet both penetration force and steam energy.

[0039] It is understandable that, referring to Figure 1 In some examples of the present invention, the handle housing 100 includes a first housing 110 and a second housing 120. The first housing 110 and the second housing 120 can be connected by, for example, screws and nuts, snap connections, etc. Figure 3 and Figure 4 In this embodiment, an installation chamber is formed between the first shell 110 and the second shell 120, and the heating module 810, the displacement sensor 910 and the puncture sliding assembly 400 are all installed in the installation chamber, and the external environmental interference is eliminated through the closed cavity structure.

[0040] It should be noted that, referring to Figure 9 In some examples of the present invention, the metal needle tube 310 is a stainless steel tube, and the insulation tube 320 is a PEEK tube.

[0041] It is understood that the metal needle tube 310 is a stainless steel tube made of medical stainless steel 316L, which has high hardness and good biocompatibility. The insulation tube 320 is made of PEEK (polyetheretherketone), which has high temperature resistance, corrosion resistance, and good biocompatibility.

[0042] During the treatment of uterine fibroids, it is possible that some fibroids have already undergone fibrosis or calcification, so their hardness is relatively high. The puncture needle 300 uses a sharp metal puncture tip 311 to easily penetrate; the steam required for treatment is transported through the designed insulation tube 320, and its energy loss is relatively low, greatly improving the treatment efficiency.

[0043] Of course, in other examples, the metal needle tube 310 and the insulation tube 320 are not limited to the combination of 316L stainless steel tube and PEEK tube, and 317L, titanium and titanium alloy, cobalt-chromium alloy, etc. can also be used.

[0044] Reference Figure 9 In some examples of the present invention, the air outlet portion 321 includes an air outlet hole, and the avoidance portion 312 includes an air outlet waist groove arranged along the length direction of the metal needle tube 310, and the air outlet hole is arranged corresponding to the hollow part of the air outlet waist groove.

[0045] The air outlet hole is arranged corresponding to the hollow part of the air outlet waist groove. The air outlet waist groove extends along the length direction of the metal needle tube 310, that is, axially, to form a stable airflow channel to ensure that the gas is efficiently discharged along the set direction. The air outlet waist groove is designed to avoid the air outlet part 321 of the insulation tube 320, so that the metal needle tube 310 maintains the overall strength and avoids airflow interfering with the main functional area, thereby improving the reliability and operation smoothness of the device as a whole.

[0046] Specifically, refer to Figure 9 In some examples of the present invention, each group of air outlet parts 321 has four air outlet holes, and the four air outlet holes are evenly distributed along the length direction of the side wall of the insulation tube 320, and multiple air outlet holes are arranged corresponding to the hollow part of the air outlet waist groove.

[0047] In this embodiment, the diameter of the air outlet is 0.3 mm. Of course, the diameter of the air outlet is not limited here.

[0048] With the above arrangement, the multi-hole layout can speed up the steam discharge speed and balance the circumferential air pressure of the metal needle tube 310. In addition, when a single air outlet hole is blocked, the remaining holes can still maintain the exhaust function, thereby improving the structural fault tolerance.

[0049] More specifically, in some examples of the present invention, there are three groups of air outlet portions 321, which surround and are evenly distributed on the side wall of the insulation tube 320; there are three groups of avoidance portions 312, which surround and are evenly distributed on the side wall of the metal needle tube 310; the air outlet portions 321 and the avoidance portions 312 are arranged in a one-to-one correspondence.

[0050] Of course, the number of the air outlet portions 321 is not limited to three, and may also be one, two, or four groups.

[0051] The surrounding multiple sets of air outlets 321 form a three-dimensional exhaust network, eliminating airflow dead spots and ensuring uniform circumferential dissipation of steam from the metal needle tube 310, reducing local temperature or pressure gradients. The symmetrical layout takes into account both the strength of the metal needle tube 310 and exhaust efficiency, and the multiple sets of redundant design further improve the system's fault tolerance and durability. The overall realization of efficient, stable and low-disturbance gas management It is understandable that, referring to Figure 9 In some examples of the present invention, the metal needle tube 310 is provided with a glue injection hole 313, and the glue injection hole 313 is used to inject glue between the metal needle tube 310 and the insulation tube 320 to form an adhesive layer between the metal needle tube 310 and the insulation tube 320 for connecting the two; After the insulation tube 320 is inserted into the metal needle tube 310 and positioned by the tooling, medical epoxy glue is injected through the glue injection hole 313 to firmly bond the two together, thereby improving the reliability of the connection between the two.

[0052] The avoidance portion 312 is located between the puncture tip 311 and the glue injection hole 313, and the three are spaced apart. The above structure prevents the medical epoxy glue injected through the glue injection hole 313 from flowing into the avoidance portion 312 and blocking the air outlet, thereby achieving spatial separation.

[0053] It is understandable that, referring to Figure 4 、 Figure 5 、 Figure 7 and Figure 9 In some examples of the present invention, the puncture sliding assembly 400 is slidably connected to the handle housing 100 , and the puncture needle 300 is fixedly connected to a portion of the structure of the puncture sliding assembly 400 .

[0054] In this embodiment, the puncture needle 300 and the puncture sliding assembly 400 both move in the front-to-back direction, that is, move in the first direction. When the puncture sliding assembly 400 moves, it can drive the puncture needle 300 to move forward and backward.

[0055] Reference Figure 3 and Figure 4 The handle housing 100 is also provided with a braking structure 500 and a puncture locking structure 600. The braking structure 500 is fixed relative to the handle housing 100, and the puncture locking structure 600 is slidable relative to the handle housing 100. The puncture locking structure 600 is fixedly connected to another part of the puncture sliding assembly 400. The puncture locking structure 600 is suitable for driving the puncture sliding assembly 400 to cooperate with the braking structure 500 to switch the puncture sliding assembly 400 between a locked state and an unlocked state.

[0056] It will be appreciated that in this embodiment, the puncture locking structure 600 moves left and right relative to the handle housing 100, i.e., in the second direction. The puncture sliding assembly 400 has a fixed end and a movable end, the movable end being in driving engagement with the puncture locking structure 600, and the fixed end being fixedly connected to the puncture needle 300. When the puncture locking structure 600 is operated, the puncture locking structure 600 and the movable end are driven to slide left and right, thereby switching the steam ablation handle between a locked state and an unlocked state.

[0057] In the locked state, the puncture sliding assembly 400 is in fixed contact with the braking structure 500, and the puncture sliding assembly 400 and the puncture needle 300 are fixed relative to the handle housing 100; In the unlocked state, the puncture sliding assembly 400 is separated from the braking structure 500 , and the puncture sliding assembly 400 drives the puncture needle 300 to slide relative to the handle housing 100 .

[0058] The puncture needle 300 is in the initial position, and the steam ablation handle is in a locked state. The moving end of the puncture sliding assembly 400 contacts and cooperates with the braking structure 500 to limit the sliding of the puncture sliding assembly 400 relative to the handle housing 100, thereby limiting the sliding of the puncture needle 300; when sliding is required, the puncture locking structure 600 is driven to move so that the moving end of the puncture sliding assembly 400 is separated from the braking structure 500 to release the restriction on the puncture sliding assembly 400, so that the puncture needle 300 and the puncture sliding assembly 400 can slide as a whole relative to the handle housing 100 and slide to the target position; after sliding to the target position, the puncture locking structure 600 and the puncture sliding assembly 400 are reset to the locked state, and the moving end of the puncture sliding assembly 400 contacts and cooperates with the braking structure 500, thereby locking the puncture sliding assembly 400 and the puncture needle 300. Through the cooperation between the puncture sliding assembly 400, the braking structure 500 and the puncture locking structure 600, the puncture needle 300 can be locked after being pushed to the target position, that is, self-locking, to avoid the puncture needle 300 sliding after puncture is in place, resulting in mistreatment, thereby improving the safety of use, thereby helping to avoid changes in the expected ablation treatment area and preventing damage to surrounding tissues.

[0059] Specifically, refer to Figure 4 and Figure 7 In some examples of the present invention, the puncture sliding assembly 400 includes a sliding member 410, a limiting member 420 and an elastic member 430, the sliding member 410 is slidably connected to the handle housing 100, and the sliding member 410 is fixedly connected to the puncture needle 300.

[0060] The above defines the components and basic connections of the puncture sliding assembly 400. The sliding member 410 is the main motion skeleton, which is slidably connected to the handle housing 100, allowing movement in a first direction, and is rigidly fixed to the puncture needle 300 to transmit movement; the limit member 420 and the elastic member 430 provide control functions. The limit member 420 is used to limit or release movement, and the elastic member 430 provides a reset force.

[0061] The limiting member 420 includes a sliding portion 421, a limiting portion 422 and an operating portion 423. The sliding portion 421 is slidably connected to the sliding member 410, the limiting portion 422 is detachably plugged into the braking structure 500, and the operating portion 423 is transmission-connected to the puncture locking structure 600. The operating portion 423 is suitable for driving the limiting portion 422 to disengage from the braking structure 500.

[0062] The sliding portion 421 slides on the sliding member 410, and the limiting portion 422 cooperates with the braking structure 500 through plugging (such as inserting / pulling out) to achieve fixation or separation; the operating portion 423 serves as an input point and is mechanically linked to the puncture locking structure 600. When operated (such as pressing or pulling), it can forcibly drive the limiting portion 422 to disengage from the braking structure 500, directly triggering unlocking.

[0063] The elastic member 430 is disposed between the sliding portion 421 and the sliding member 410 . The elastic member 430 is used to drive the limiting member 420 to return to the position to be plugged into the braking structure 500 .

[0064] The elastic member 430 provides an automatic reset function. After unlocking, the elastic member 430 drives the limit member 420 to return to its original position by compression or extension, so that the limit portion 422 is re-inserted into the brake structure 500, ensuring that the locked state is automatically restored without manual intervention.

[0065] The limiting portion 422 is arranged perpendicular to the operating portion 423 . The sliding member 410 moves along a first direction, and the operating portion 423 , the sliding portion 421 , the limiting portion 422 and the elastic member 430 move along a second direction. The first direction is perpendicular to the second direction.

[0066] The stopper 422 is arranged perpendicularly to the operating portion 423 (e.g., the operating portion 423 is horizontal and the stopper 422 is vertical). The operating portion 423 and related components move in the second direction (e.g., left and right), while the slider 410 moves in the first direction (e.g., front and back). The first direction is perpendicular (orthogonal) to the second direction, ensuring that the unlocking operation (in the second direction) does not interfere with the first direction of movement of the puncture needle 300, thereby preventing malfunction and improving stability.

[0067] Therefore, it can be understood that the upload puncture slide assembly 400 implements an automatic reset locking and unlocking mechanism: in the locked state, the limiter 422 engages with the brake structure 500 to secure the puncture needle 300. To unlock, operating the operating portion 423 in the second direction drives the limiter 422 to disengage the brake structure 500, allowing the slide 410 to slide the workpiece in the first direction. After the release operation, the elastic member 430 automatically resets the limiter 420, reengages the brake structure 500, and restores the lock. The directional isolation (vertical arrangement) ensures independent operation and sliding, enhancing reliability and ease of use.

[0068] Reference Figure 7 In some examples of the present invention, the sliding member 410 is provided with a sliding groove 411 and a guide channel 412 , the guide channel 412 is connected to the sliding groove 411 , and the width of the sliding groove 411 is greater than that of the guide channel 412 ; The limiting member 420 further includes a guide portion 424, which is provided on one side of the operating portion 423, and the two are aligned with each other toward the end surface of the sliding portion 421. The width of the operating portion 423 is greater than the width of the guide portion 424. The operating portion 423 and the sliding groove 411 are both sized to match, and the guide portion 424 and the guide channel 412 are both sized to match. One end of the elastic member 430 abuts against the operating portion 423 and the guide portion 424 , and the other end abuts against the sliding member 410 .

[0069] Through the above structure, the sliding groove 411 (wide) and the guide channel 412 (narrow) form a stepped guide structure. The operating portion 423 (wide) can only move within the sliding groove 411, and the guide portion 424 (narrow) is restricted to sliding within the guide channel 412. This ensures that the limiter 420 can move stably only in the second direction (e.g., the vertical direction), avoiding deflection or jamming. The operating portion 423 matches the width of the sliding groove 411, and the guide portion 424 matches the width of the guide channel 412. This ensures smooth sliding, reduces shaking, and improves the positioning accuracy of insertion and separation. The two ends of the elastic member 430 respectively abut the operating portion 423 / guide portion 424 and the sliding member 410, directly transmitting elastic force to the entire limiter 420, driving the limiter 422 to quickly return to the plugged position, ensuring that the locked state is automatically restored after unlocking.

[0070] Furthermore, the end faces of the operating portion 423 and the guide portion 424 are aligned, evenly distributing the pressure from the elastic member 430 and preventing twisting or uneven force on the stopper 420 during movement, thereby enhancing structural reliability. The stepped grooves and dimensionally adapted design ensure precise guidance and stable movement of the stopper 420. Combined with the efficient resetting of the elastic member 430, this creates a highly reliable one-touch unlocking and automatic locking mechanism.

[0071] Specifically, in some examples of the present invention, the sliding portion 421 is a sliding boss, and a sliding hole is provided on the sliding member 410. The sliding boss and the sliding hole can be slidably inserted and matched, thereby further improving the guiding effect.

[0072] It is understandable that, referring to Figure 4 and Figure 8 In some examples of the present invention, the puncture locking structure 600 includes a main button 610 and a sub-button 620, and the sub-button 620 is slidably connected to the handle housing 100; The main button 610 and the sub-button 620 are slidably connected, and the sliding direction of the main button 610 is perpendicular to the sliding direction of the sub-button 620. The end of the main button 610 facing the handle housing 100 is fixedly connected to the limiter 420. The braking structure 500 includes a braking portion 510 , which includes a plurality of tooth-shaped grooves, and the plurality of tooth-shaped grooves are evenly distributed along the movement direction of the sliding member 410 ; The limiting portion 422 is a locking protrusion that is engaged with one of the tooth-shaped grooves to limit the movement of the sliding member 410 .

[0073] With the above structure, in the locked state, the limiting portion 422, that is, the engaging protrusion is engaged with the toothed groove, limiting the sliding of the puncture sliding assembly 400, thereby locking the puncture needle 300; when movement is required, the puncture locking structure 600 is pressed, and then the engaging protrusion is disengaged from the toothed groove, thereby allowing the puncture sliding assembly 400 to move back and forth in the first direction. The structural design is easy to operate and highly safe.

[0074] It should be noted that in this embodiment, a connecting notch is provided on the bottom surface of the above-mentioned operating part 423, and a connecting hole is provided on the end of the main button 610 facing the operating part 423. The connecting hole and the connecting notch can be penetrated by components such as bolts to achieve a fixed connection between the main button 610 and the operating part 423.

[0075] It should also be noted that, referring to Figure 7 and Figure 8 In this embodiment, the bottom surface of the operating portion 423 is provided with a pre-installed boss 425, and the limiting portion 422 is formed on the bottom surface of the pre-installed boss 425. The main button 610 is provided with a pre-installed notch 611. The pre-installed notch 611 is adapted to the size of the pre-installed boss 425 and is engaged with it. The limiting portion 422 protrudes from the main button 610 to engage with the tooth-shaped groove. The pre-installed boss 425 is sized to fit snugly within the pre-installed notch 611, creating a modular assembly structure for the operating portion 423 and the main button 610. This facilitates production and assembly while ensuring a rigid connection between the two, preventing relative displacement. A stopper 422 extends from the bottom surface of the pre-installed boss 425 and protrudes beyond the main button 610, ensuring precise insertion and removal from the detent structure 500 and reliable locking and unlocking. This design optimizes space utilization and reduces additional volume.

[0076] Of course, in some other examples, the above-mentioned puncture sliding assembly 400 can also be a lever linkage structure, such as including a pressing lever and a wedge-shaped plug, one end of the pressing lever is connected to the wedge-shaped plug, and when the lever is pressed, it is tilted up and disengaged from the toothed groove of the braking structure 500. This is not limited here.

[0077] Reference Figure 4 and Figure 7 In some examples of the present invention, the braking parts 510 are divided into two groups, and the two groups of braking parts 510 are arranged at intervals; The limiting members 420 and the elastic members 430 are each in two groups. The two groups of limiting members 420 are located on opposite sides of the sliding member 410. A group of elastic members 430 is arranged between the sliding portion 421 of each group of limiting members 420 and the sliding member 410. The limiting portions 422 of the two sets of limiting members 420 are matched with the two sets of braking portions 510 in a one-to-one correspondence, and the puncture needle 300 is located between the two sets of limiting members 420 .

[0078] The two sets of braking parts 510 and the two sets of limiting parts 420 are arranged symmetrically, so that the puncture sliding assembly 400 is subjected to balanced restraint forces on both sides during the sliding process, avoiding deflection or jamming caused by unilateral force, and improving stability. During operation, it is necessary to press the main button 610 of the puncture locking structure 600 at the same time before sliding, to prevent accidental touch during the operation from puncturing other non-treatment tissues or mistaken ablation. It can self-lock at any position to avoid changes in the puncture position from achieving the treatment effect, greatly improving safety.

[0079] The two sets of elastic members 430 act on the limiting members 420 on both sides respectively, ensuring that the limiting parts 422 on both sides can be synchronously reset to the plug-in position after unlocking, thereby avoiding structural interference or wear caused by asynchronous reset.

[0080] It should be noted that, in some examples of the present invention, a sliding groove is formed between the first shell 110 and the second shell 120 to prevent the main button 610 and the sub-button 620 of the puncture locking structure 600 from sliding along the first direction.

[0081] It is understandable that, referring to Figure 5 and Figure 6 In some examples of the present invention, the steam ablation handle also includes a sealing assembly 700, which includes a fixed cover body 710, a first sealing ring 720 and a second sealing ring 730. The fixed cover body 710 is fixedly connected to the handle housing 100 to establish a rigid installation foundation to ensure that the entire sealing assembly 700 does not move under the action of external force, thereby preventing sealing failure due to vibration.

[0082] The fixed cover body 710 is provided with a tube passage 711, and the fitting point of the needle insertion tube 210 and the puncture needle 300 is located in the tube passage 711, which centrally constrains the direction of the needle insertion tube 210 and the puncture needle 300. The inner wall of the tube passage 711 limits the radial position of the needle insertion tube 210 and the puncture needle 300 to avoid deviation.

[0083] The first sealing ring 720 is located in the tube passage 711, and the first sealing ring 720 is sleeved on the needle insertion tube 210 to seal the gap between the needle insertion tube 210 and the inner wall of the tube passage 711; the second sealing ring 730 is located in the tube passage 711, and the second sealing ring 730 is sleeved on the metal needle tube 310 to seal the gap between the puncture needle 300 and the inner wall of the tube passage 711.

[0084] The first sealing ring 720 and the second sealing ring 730 are integrated into the tube passage 711 of the closed space, which not only protects the first sealing ring 720 and the second sealing ring 730 from external contamination, but also utilizes the wall of the tube passage 711 to form a uniform circumferential extrusion environment, thereby sealing the insertion point of the needle tube 210 and the puncture needle 300.

[0085] Specifically, refer to Figure 5 and Figure 6 In some examples of the present invention, the fixed cover body 710 includes a first fixed cover 712 and a second fixed cover 713 , the first fixed cover 712 is fixedly connected to the handle housing 100 , and the second fixed cover 713 is plugged into the first fixed cover 712 ; The first fixing cover 712 is provided with a first through hole 7121 and a first concave cavity 7122 communicating with the first through hole 7121. The metal needle tube 310 fits in the first through hole 7121. The inner sidewall of the first sealing ring 720 abuts against the metal needle tube 310, and the outer sidewall of the first sealing ring 720 abuts against the inner wall of the first concave cavity 7122. The second fixing cover 713 is provided with a second through hole 7131 and a second concave cavity 7132 communicating with the second through hole 7131. The needle inlet tube 210 fits in the second through hole 7131. The inner sidewall of the second sealing ring 730 abuts against the needle inlet tube 210, and the outer sidewall of the second sealing ring 730 abuts against the inner wall of the second concave cavity 7132. The first through hole 7121 , the first concave cavity 7122 , the second through hole 7131 , and the second concave cavity 7132 are sequentially connected to form the tube passage 711 .

[0086] With the above structure, the first fixed cover 712 and the second fixed cover 713 are designed to be separated to reduce the difficulty of processing, and the plug-in structure is convenient for disassembly and maintenance. At the same time, the corresponding assembly and fixation of the puncture needle 300 and the needle tube 210 can be achieved according to the corresponding positions, achieving a balance between double-tube high-pressure sealing and long life.

[0087] It is understandable that, referring to Figures 1 to 4 as well as Figure 10 In some examples of the present invention, the catheter assembly 200 also includes a flushing tube 220, an outer protective tube 230 and a positioning member 240. The outer protective tube 230 is externally mounted on the needle insertion tube 210 and the flushing tube 220. The positioning member 240 is disposed at one end of the outer protective tube 230 and is fixedly connected to the outer protective tube 230. A positioning wall is provided on the first shell 110 of the handle shell 100, and a positioning recess is provided on the positioning wall. The positioning member 240 is engaged with the positioning recess to limit the outer protective tube 230 from moving forward and backward relative to the handle shell 100.

[0088] It should be noted that, in this embodiment, the needle inlet tube 210, the flushing tube 220 and the positioning member 240 are welded to the outer protective tube 230 into a whole.

[0089] It should also be noted that, referring to Figure 3 and Figure 4 In some examples of the present invention, one end of the heating module 810 is connected to the sterile water pipe 820, and the other end is connected to the insulation tube 320 of the puncture needle 300; when the sterile water is heated by the heating module 810, it is converted into steam and transported to the air outlet and the air outlet waist groove through the insulation tube 320 of the puncture needle 300 for spraying.

[0090] It is understandable that, referring to Figures 3 to 5 In some examples of the present invention, the displacement sensor 910 is used to detect the sliding stroke of the puncture sliding assembly 400.

[0091] It should be noted that, in this embodiment, the displacement sensor 910 can be ultrasonic, capacitive, etc., which is not limited here.

[0092] In this embodiment, the displacement sensor 910 is coupled to the sliding member 410 of the puncture sliding assembly 400; when the sliding member 410 slides, the displacement sensor 910 can feed back the moving displacement time to the control center and display it on the screen, at which time the doctor can observe the puncture depth through the screen.

[0093] It should be noted that, in this embodiment, the puncture needle 300 and the sliding member 410 are fixedly connected by adhesive coupling to ensure a firm connection and avoid relative displacement or loosening.

[0094] Reference Figure 4 and Figure 5 In this embodiment, a mounting groove 413 is provided in the middle of the sliding member 410, and the opening of the mounting groove 413 is set upward. A connecting protrusion is provided on the bottom surface of the displacement sensor 910, and the connecting protrusion is inserted into the mounting groove 413. The connecting protrusion is located on the front side of the sliding hole. Part of the structure of the puncture needle 300 is fixedly installed in the mounting groove 413, and the connecting protrusion is located above the puncture needle 300.

[0095] It can be understood that the mounting groove 413 forms an open-top accommodation space, which facilitates the rapid assembly of the displacement sensor 910 and the puncture needle 300 from above to improve assembly efficiency; the connecting protrusion and the mounting groove 413 are clearance-matched to limit the horizontal deviation of the displacement sensor 910; the puncture needle 300 assumes the basic function, and the displacement sensor 910 is superimposed on it, and the functional partitions do not interfere with each other, but the displacement sensor 910 also monitors the movement of the puncture needle 300 and the puncture sliding assembly 400 in real time, and the overall layout saves space.

[0096] It should also be noted that, referring to Figure 4 and Figure 7In this embodiment, the sliding hole is connected to the side wall of the mounting groove 413, and the puncture needle 300 is located at the lower side of the sliding hole; two sliding grooves 414 are provided at the bottom of the sliding member 410, and two guide rails 111 are provided on the second shell 120 that slide in correspondence with the sliding grooves 414, which guide the puncture sliding assembly 400, and the overall layout saves space.

[0097] Reference Figures 1 to 4 In some examples of the present invention, the steam ablation handle also includes a rocker assembly 920 and a wire 830. Specifically, in this embodiment, the rocker assembly 920 includes a rocker sensor 921 and a rocker cap 922 connected to the rocker sensor 921, which is mainly used for setting the ablation area and safety boundary. The wire 830 is electrically connected to electrical components such as the heating module 810, the displacement sensor 910 and the rocker assembly 920.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A steam ablation handle for uterine fibroids, characterized in that: include: Handle housing (100); A catheter assembly (200) is fixedly connected to the handle housing (100), and the catheter assembly (200) includes a needle inlet tube (210); A puncture needle (300) is provided to cooperate with the needle insertion tube (210), and the puncture needle (300) is movable relative to the needle insertion tube (210). The puncture needle (300) includes a metal needle tube (310) and a heat preservation tube (320). The metal needle tube (310) is sheathed on the heat preservation tube (320). The heat preservation tube (320) is used to pass steam. The end of the metal needle tube (310) away from the handle housing (100) is a puncture tip (311). The heat preservation tube (320) is provided with an air outlet (321), the air outlet (321) is connected to the interior of the heat preservation tube (320), and the metal needle tube (310) is provided with a relief portion (312), the relief portion (312) is close to and spaced apart from one side of the puncture tip (311); The avoidance portion (312) and the air outlet portion (321) are both arranged away from the handle housing (100); the avoidance portion (312) is arranged corresponding to the air outlet portion (321) and avoids the air outlet path of the air outlet portion (321).

2. The steam ablation handle for uterine fibroids according to claim 1, characterized in that: The air outlet portion (321) includes an air outlet hole, and the avoidance portion (312) includes an air outlet waist groove arranged along the length direction of the metal needle tube (310), and the air outlet hole is arranged corresponding to the hollow part of the air outlet waist groove.

3. The steam ablation handle for uterine fibroids according to claim 2, characterized in that: There are a plurality of air outlet holes, and the plurality of air outlet holes are evenly distributed along the length direction of the side wall of the thermal insulation pipe (320), and the plurality of air outlet holes are arranged corresponding to the hollow portion of the air outlet waist groove.

4. The steam ablation handle for uterine fibroids according to claim 2, characterized in that: The air outlet portions (321) are in three groups, and the three groups of air outlet portions (321) surround and are evenly distributed on the side wall of the insulation pipe (320); The avoidance portions (312) are in three groups, and the three groups of avoidance portions (312) surround and are evenly distributed on the side wall of the metal needle tube (310); The air outlet portion (321) and the avoidance portion (312) are arranged in a one-to-one correspondence.

5. The steam ablation handle for uterine fibroids according to claim 1, characterized in that: The metal needle tube (310) is provided with a glue injection hole (313), and the glue injection hole (313) is used to inject glue between the metal needle tube (310) and the insulation tube (320), so as to form an adhesive layer between the metal needle tube (310) and the insulation tube (320) for connecting the two. The avoidance portion (312) is located between the puncture tip (311) and the glue injection hole (313), and the three are arranged at intervals.

6. The steam ablation handle for uterine fibroids according to any one of claims 1 to 5, characterized in that: The metal needle tube (310) is a stainless steel tube, and / or the thermal insulation tube (320) is a PEEK tube.

7. The steam ablation handle for uterine fibroids according to claim 1, characterized in that: It also includes a puncture sliding assembly (400), wherein the puncture sliding assembly (400) is slidably connected to the handle housing (100), and the puncture needle (300) is fixedly connected to a part of the structure of the puncture sliding assembly (400); The handle housing (100) is further provided with a braking structure (500) and a puncture locking structure (600), wherein the braking structure (500) is fixed relative to the handle housing (100), and the puncture locking structure (600) is slidable relative to the handle housing (100), and the puncture locking structure (600) is fixedly connected to another part of the puncture sliding assembly (400), and the puncture locking structure (600) is suitable for driving the puncture sliding assembly (400) to cooperate with the braking structure (500) so that the puncture sliding assembly (400) switches between a locked state and an unlocked state; In the locked state, the puncture sliding assembly (400) is in fixed contact with the braking structure (500), and the puncture sliding assembly (400) and the puncture needle (300) are fixed relative to the handle housing (100); In the unlocked state, the puncture sliding assembly (400) is separated from the braking structure (500), and the puncture sliding assembly (400) drives the puncture needle (300) to slide relative to the handle housing (100).

8. The steam ablation handle for uterine fibroids according to claim 7, characterized in that: The puncture sliding assembly (400) comprises: A sliding member (410) is slidably connected to the handle housing (100), and the sliding member (410) is fixedly connected to the puncture needle (300); The limiting member (420) comprises a sliding portion (421), a limiting portion (422) and an operating portion (423), wherein the sliding portion (421) is slidably connected to the sliding member (410), the limiting portion (422) is detachably plugged into the braking structure (500), the operating portion (423) is transmission-connected to the puncture locking structure (600), and the operating portion (423) is adapted to drive the limiting portion (422) to disengage from contact with the braking structure (500); an elastic member (430) disposed between the sliding portion (421) and the sliding member (410), the elastic member (430) being used to drive the limiting member (420) to return to a position where it is plugged into the braking structure (500); The limiting portion (422) is arranged perpendicularly to the operating portion (423); the sliding member (410) moves along a first direction; the operating portion (423), the sliding portion (421), the limiting portion (422) and the elastic member (430) move along a second direction; the first direction is perpendicular to the second direction.

9. The steam ablation handle for uterine fibroids according to claim 8, characterized in that: The sliding member (410) is provided with a sliding groove (411) and a guide channel (412), the guide channel (412) is connected to the sliding groove (411), and the width of the sliding groove (411) is greater than that of the guide channel (412); The limiting member (420) further includes a guide portion (424), the guide portion (424) being provided on one side of the operating portion (423), and the two being aligned with each other toward the end surface of the sliding portion (421), the width of the operating portion (423) being greater than the width of the guide portion (424), the operating portion (423) and the sliding groove (411) being adapted in size, and the guide portion (424) and the guide channel (412) being adapted in size; One end of the elastic member (430) abuts against the operating portion (423) and the guide portion (424), and the other end abuts against the sliding member (410).

10. The steam ablation handle for uterine fibroids according to claim 8, characterized in that: The puncture locking structure (600) comprises a main button (610) and a sub-button (620), wherein the sub-button (620) is slidably connected to the handle housing (100); The main button (610) and the sub-button (620) are slidably connected, the sliding direction of the main button (610) and the sliding direction of the sub-button (620) are arranged perpendicularly, and one end of the main button (610) facing the handle housing (100) is fixedly connected to the limiting member (420); The braking structure (500) comprises a braking portion (510), the braking portion (510) comprising a plurality of tooth-shaped grooves, the plurality of tooth-shaped grooves being evenly distributed along the movement direction of the sliding member (410); The limiting portion (422) is a clamping protrusion, and the clamping protrusion is clamped and matched with one of the tooth-shaped grooves to limit the movement of the sliding member (410).

11. The steam ablation handle for uterine fibroids according to claim 10, characterized in that: The braking parts (510) are divided into two groups, and the two groups of braking parts (510) are arranged at intervals; The limiting members (420) and the elastic members (430) are each provided in two groups. The two groups of limiting members (420) are respectively located on opposite sides of the sliding member (410). A group of elastic members (430) is arranged between the sliding portion (421) of each group of limiting members (420) and the sliding member (410). The limiting portions (422) of the two groups of limiting members (420) are matched with the two groups of braking portions (510) in a one-to-one correspondence, and the puncture needle (300) is located between the two groups of limiting members (420).

12. The steam ablation handle for uterine fibroids according to claim 1, characterized in that: Also included is a sealing assembly (700), the sealing assembly (700) comprising: A fixed cover (710) is fixedly connected to the handle housing (100), and the fixed cover (710) is provided with a tube passage (711), and the fitting portion where the needle tube (210) and the puncture needle (300) are inserted is located in the tube passage (711); a first sealing ring (720) located in the tube passage (711), wherein the first sealing ring (720) is sleeved on the needle inlet tube (210) to seal a gap between the needle inlet tube (210) and the inner wall of the tube passage (711); The second sealing ring (730) is located in the tube passage (711), and the second sealing ring (730) is sleeved on the metal needle tube (310) to seal the gap between the puncture needle (300) and the inner wall of the tube passage (711).

13. The steam ablation handle for uterine fibroids according to claim 12, characterized in that: The fixed cover body (710) comprises a first fixed cover (712) and a second fixed cover (713), wherein the first fixed cover (712) is fixedly connected to the handle housing (100), and the second fixed cover (713) is plugged into the first fixed cover (712); The first fixed cover (712) is provided with a first through hole (7121) and a first concave cavity (7122) communicating with the first through hole (7121); the metal needle tube (310) and the first through hole (7121) are adapted to each other; the inner side wall of the first sealing ring (720) abuts against the metal needle tube (310); and the outer side wall of the first sealing ring (720) abuts against the inner wall of the first concave cavity (7122); The second fixed cover (713) is provided with a second through hole (7131) and a second concave cavity (7132) communicating with the second through hole (7131); the needle inlet tube (210) and the second through hole (7131) are adapted to each other; the inner wall of the second sealing ring (730) abuts against the needle inlet tube (210); and the outer wall of the second sealing ring (730) abuts against the inner wall of the second concave cavity (7132); The first through hole (7121), the first concave cavity (7122), the second through hole (7131) and the second concave cavity (7132) are sequentially connected to form the tube passage (711).

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