A steam therapy device

Abstract

The application provides a steam treatment device, comprising a driving unit, a steam delivery unit, a marking liquid delivery unit and a steam needle; the driving unit is used for driving the steam needle to perform puncture and retraction actions; the steam delivery unit communicates with a relay channel through a steam pipeline; the marking liquid delivery unit communicates with the relay channel through a marking liquid pipeline; when the puncture action of the steam needle is controlled, steam in the steam delivery unit enters a working channel to perform a surgical operation; when the retraction action of the steam needle is controlled, marking liquid in the marking liquid delivery unit enters the working channel to perform a marking operation. Accordingly, the puncture point can be marked in time, and the surgical efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a steam therapy device capable of marking treatment sites. Background Technology

[0002] In steam therapy procedures such as prostatectomy and ablation, under image guidance, the surgeon inserts a treatment instrument into the prostatic urethra through the urinary tract. The steam needle punctures the urethral mucosa laterally to enter the prostate, and then releases hot steam through the jet orifice at the tip to perform steam ablation. Typically, single-point ablation has an effective range of 10mm-15mm along the urethral wall, while prostate hyperplasia usually extends 30mm-80mm along the urethral direction. Therefore, the surgeon needs to plan multiple punctures and treatments based on the size of the prostate to completely cover the hyperplastic area.

[0003] However, the ablation area during surgery is located within the prostatic hyperplasia tissue beneath the urethral mucosa, which needs protection and must not be damaged. Doctors cannot see the ablation area through a cystoscope; they can only see the urethral mucosa. When a point is ablated and the steam needle is withdrawn, the puncture site becomes almost invisible due to contraction. Therefore, when pausing and resuming surgery, doctors often cannot determine which areas have been treated and which have not.

[0004] Therefore, in the existing technology, how to make the steam therapy device accurately mark the location of the puncture treatment has become a technical problem. Summary of the Invention

[0005] The purpose of this application is to provide a steam therapy device capable of marking puncture sites. To achieve the above objective, one solution of this application is a steam therapy device comprising a drive unit, a steam delivery unit, a marking solution delivery unit, and a steam needle; the drive unit is used to drive the steam needle to perform puncture and retraction actions, and includes a drive module and a relay module; the relay module is drively connected to the steam needle and has a relay channel communicating with the working channel within the steam needle; the steam delivery unit is used to supply steam and is connected to the relay channel via a steam pipe; the marking solution delivery unit is used to supply marking solution and is connected to the relay channel via a marking solution pipe; the device operates as follows: when the steam needle performs the puncture action... When the steam needle retracts, the operating channel is supplied with steam for surgical procedures; when the steam needle retracts, the operating channel is supplied with a marking solution for marking. The marking solution delivery unit includes a reservoir connected to the marking solution pipeline and a squeezing element at least partially disposed within the reservoir. The relay module can drive the reservoir or the squeezing element to reciprocate. When the steam needle retracts, the relay module can drive the squeezing element to move relatively close to the reservoir, squeezing the marking solution in the reservoir and outputting it through the marking solution pipeline to the relay channel.

[0006] In a preferred embodiment, the steam delivery unit is provided with a first one-way valve controlling the unidirectional outflow of fluid in the steam pipeline towards the relay channel; the labeling liquid delivery unit is provided with a second one-way valve controlling the unidirectional outflow of fluid in the labeling liquid pipeline towards the relay channel; when the relay module, driven by the drive module, controls the steam needle to perform a puncture action, the labeling liquid pipeline is unidirectionally shut off by the second one-way valve, and the steam in the steam delivery unit enters the working channel via the relay channel; when the relay module, driven by the drive module, controls the steam needle to perform a retraction action, the steam pipeline is unidirectionally shut off by the first one-way valve, and the labeling liquid in the labeling liquid delivery unit, driven by the relay module, enters the working channel via the relay channel.

[0007] In a preferred embodiment, when the steam needle is controlled to perform a puncture action, the relay module can drive the squeezing element to move relative to the reservoir, thereby creating a negative pressure in the reservoir and replenishing the reservoir with the marking liquid.

[0008] In a preferred embodiment, the extruder is provided with a marking liquid supply channel communicating with a liquid source of the marking liquid, and a third one-way valve controlling the unidirectional outflow of fluid in the marking liquid supply channel toward the reservoir; when the extruder moves relative to the reservoir, a negative pressure is formed in the reservoir, causing the marking liquid to enter the reservoir from the marking liquid supply channel; when the extruder moves relative to the reservoir, the marking liquid supply channel is unidirectionally shut off by the third one-way valve.

[0009] In a preferred embodiment, the reservoir or the extruder that can be reciprocated by the relay module is linked to the relay module via a transmission assembly; the transmission assembly is configured such that: during the puncture stroke of the steam needle, after the relay module has moved a first preset distance, it begins to drive the labeling liquid delivery unit to replenish the reservoir with labeling liquid via the transmission assembly; and / or, during the retraction stroke of the steam needle, after the relay module has moved a second preset distance, it begins to drive the labeling liquid delivery unit to output labeling liquid to the relay channel via the transmission assembly.

[0010] In a preferred embodiment, the plane perpendicular to the moving direction of the relay module is taken as the axial direction, and the transmission assembly includes an axially extending connecting arm connected to the reservoir, and a puncture transmission part extending along the cross-section and connected to the connecting arm; the relay module is provided with a relay drive part extending along the cross-section; when the steam needle is controlled to perform a puncture action, the relay drive part moves a first preset distance under the drive of the relay module and then abuts against the puncture transmission part, and then drives the reservoir to move via the puncture transmission part.

[0011] In a preferred embodiment, the connecting arm is also connected to a retraction drive unit extending along the cross-section; when the steam needle is controlled to perform a retraction action, the relay drive unit retracts the second preset distance under the drive of the relay module and then abuts against the retraction drive unit, and then drives the liquid reservoir to retract via the retraction drive unit.

[0012] In a preferred embodiment, the length of the connecting arm is adjustable to accommodate different puncture strokes of the steam needle.

[0013] In a preferred embodiment, the transmission assembly is an axially extending closed frame structure, with the connecting arm, the puncture transmission part, and the retraction transmission part each forming one side of the closed frame structure.

[0014] In a preferred embodiment, the relay drive unit partially passes through the gap area enclosed by the closed frame structure; the relay drive unit travels within this gap area as the relay module moves.

[0015] In a preferred embodiment, the drive module includes a solenoid coil and a magnetic element fixed to the relay module and cooperating with the solenoid coil; by controlling the current direction of the solenoid coil, the movement direction of the relay module can be controlled via the magnetic element, allowing it to switch between driving the steam needle to perform a puncture action and a retraction action.

[0016] The steam therapy device of the above embodiments of this application can replenish the reservoir with marking liquid when the steam needle is punctured, and spray the marking liquid in time to mark the position when the needle is about to be withdrawn. The overall structure is highly integrated, reliable and stable. Attached Figure Description

[0017] To more clearly illustrate this application, the accompanying drawings will be described and explained below. Obviously, the drawings described below only illustrate certain aspects of some exemplary embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the steam therapy device.

[0019] Figure 2 This is a cross-sectional view of the drive unit and the labeling liquid delivery unit.

[0020] Figure 3 This is a top view of the drive unit and the labeling liquid delivery unit.

[0021] Figure 4 This is a schematic diagram of the device in which the marking liquid is sprayed at the end of the retraction stroke of the steam needle.

[0022] Figure 5 This is a schematic diagram of the device during the initial empty stroke of the steam needle puncture.

[0023] Figure 6 This is a schematic diagram of the device that replenishes the marking liquid to the reservoir at the end of the steam needle puncture stroke.

[0024] Attached image caption:

[0025] 1 drive unit

[0026] 11 Driver Module

[0027] 12 relay modules

[0028] 120 Relay Connection Section

[0029] 121 First check valve

[0030] 122 Second check valve

[0031] 123 Relay Drive Unit

[0032] 124 Magnetic Components

[0033] 125 relay channel

[0034] 2. Marking solution delivery unit

[0035] 20. Labeling solution tubing

[0036] 21. Liquid reservoir

[0037] 22 Extrusions

[0038] 221 Labeling solution supply channel

[0039] 23 Third check valve

[0040] 241 Connecting Arm

[0041] 242 Puncture transmission unit

[0042] 243 Retraction transmission unit

[0043] 244 Limiting section

[0044] 25 Communicating vessels

[0045] 3 Steam Conveying Unit

[0046] 30 Steam Piping

[0047] 31. Skeleton

[0048] 4 Steam needles

[0049] 5. Treatment catheter

[0050] 51. Puncture channel tube

[0051] 52 Endoscopic access tube

[0052] 53 Outer tube

[0053] 6. Handle housing

[0054] 7. Endoscope Detailed Implementation

[0055] Various exemplary embodiments of this application are described in detail below with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the application or its application or use. This application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise stated, the relative arrangement of components and steps, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0056] As used in this application, the words “including” or “comprising” or similar terms mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility that it may also cover other elements.

[0057] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as being interpreted with idealized or highly formalized meanings, unless explicitly defined herein.

[0058] For components, specific model numbers and other parameters of components not described in detail in this section, the interrelationships between components and control circuits, these may be considered as techniques, methods and devices known to those skilled in the art, but where appropriate, such techniques, methods and devices should be considered part of the specification.

[0059] The following is for reference Figure 1-6 This application describes the structure of the steam therapy device. Figure 1 This is a schematic diagram of the overall structure of the steam therapy device. Figure 2 This is a cross-sectional view of the drive unit 1 and the labeling liquid delivery unit 2. Figure 3 This is a top view of drive unit 1 and labeling liquid delivery unit 2. Figure 4 This is a schematic diagram of the device in which the marking liquid is sprayed at the end of the retraction stroke of the steam needle 4. Figure 5 This is a schematic diagram of the device's state during the initial idle stroke of the steam needle's fourth puncture stroke. Figure 6 This is a schematic diagram of the device that replenishes the marking liquid to the reservoir 21 at the end of the puncture stroke of the steam needle 4.

[0060] In routine medical procedures, such as steam therapy for benign prostatic hyperplasia (BPH), under image guidance, the surgeon inserts a treatment instrument into the prostatic urethra through the urethral opening. The surgeon manipulates the instrument to drive the steam needle 4, puncturing the urethral mucosa and entering the prostate. Steam is then released through the jet orifice at the tip of the steam needle 4 to perform steam cutting and ablation. Typically, single-point ablation has an effective range of 10mm-15mm along the urethral direction, while BPH often extends 30mm-80mm along the urethral direction. Therefore, the surgeon needs to plan multiple punctures and treatments based on the size of the prostate to completely cover the enlarged area.

[0061] In these types of surgeries, the steam ablation area lies within the prostatic hyperplasia tissue, inside the urethral mucosa, which needs protection and must not be damaged. However, doctors cannot see the ablation area through a cystoscope; they can only see the urethral mucosa. When a point is ablated and the steam needle is withdrawn, the needle hole it left in the urethral mucosa becomes almost invisible due to contraction. Therefore, when pausing the procedure and resuming the next treatment, doctors find it difficult to determine which areas have been treated and which have not.

[0062] Therefore, the steam therapy device of this application is equipped with a position marking function. For example... Figure 1 , Figure 2 As shown, the steam therapy device of this application includes a drive unit 1, a labeling liquid delivery unit 2, a steam delivery unit 3, and a steam needle 4.

[0063] Among them, the drive unit 1 is used to drive the steam needle 4 to perform the puncture and retraction actions, such as Figure 2 As shown, the device includes a drive module 11 and a relay module 12. The relay module 12 is connected to the steam needle 4 and has a relay channel 125 that communicates with the working channel (not shown) inside the steam needle 4. The working channel of the steam needle 4 is connected to the jet hole of the steam needle 4, and steam is ejected from the jet hole during the operation to perform the treatment.

[0064] For ease of explanation, the direction from the drive module 11 toward the jet hole of the steam needle 4 is defined as front and the opposite direction as back. The front-back direction is defined as the axis, and the plane perpendicular to the axis is defined as the cross-section. In this embodiment, the relay module 12 can move back and forth along the axis to drive the steam needle 4 to perform puncture and retraction actions.

[0065] Here, the puncture action refers to the drive module 11 driving the steam needle 4 via the relay module 12, causing the steam needle 4 to move forward, and then puncture the sheath ( Figure 1The needle bends approximately 90 degrees under the guidance of the rightmost end of the tube, while its tip is perpendicular to the urethral mucosa for puncture. Furthermore, the retraction action refers to the action whereby the drive module 11 drives the steam needle 4 via the relay module 12, causing the steam needle 4 to move rearward and, after disengaging from the sheath, return to its axial orientation.

[0066] Continue reading Figure 1 The steam delivery unit 3 is connected to the relay channel 125 via the steam pipeline 30, and is equipped with a first one-way valve 121 to control the unidirectional flow of fluid in the steam pipeline 30 towards the relay channel 125. Preferably, the first one-way valve 121 is located at the connection between the steam pipeline 30 and the relay channel 125, and is configured to open only on one side of the relay channel 125. The first one-way valve 121 can also be located further upstream of the relay channel 125, as long as it can prevent fluid from flowing from the relay channel 125 to the steam pipeline 30 when closed; its location is not limited here.

[0067] In this embodiment, the labeling liquid delivery unit 2 is connected to the relay channel 125 via the labeling liquid pipeline 20, and is equipped with a second one-way valve 122 to control the unidirectional flow of fluid in the labeling liquid pipeline 20 towards the relay channel 125. Preferably, the labeling liquid pipeline 20 is a flexible hose, and the second one-way valve 122 is located at the connection between the labeling liquid pipeline 20 and the relay channel 125, and is configured to open only on one side of the relay channel 125. The second one-way valve 122 can also be located further upstream of the relay channel 125, as long as it can block the flow of fluid from the relay channel 125 to the labeling liquid pipeline 20 when closed; its location is not limited here.

[0068] When the relay module 12, driven by the drive module 11, controls the steam needle 4 to perform the puncture action, the relay module 12 moves forward. At this time, the second one-way valve 122 closes under the hydraulic action in the relay channel 125. The marking liquid pipeline 20 is cut off by the second one-way valve 122, and the fluid in the relay channel 125 cannot flow into the marking liquid pipeline 20. However, the steam in the steam pipeline 30 can open the first one-way valve 121 and enter the relay channel 125. Under the power of the steam delivery unit 3, it enters the working channel in the steam needle 4 through the relay channel 125 and is ejected from the jet hole to perform the surgical operation.

[0069] After the single-point surgical procedure is completed, the relay module 12, driven by the drive module 11, controls the steam needle 4 to retract. The relay module 12 moves backward, at which point the steam delivery unit 3 no longer supplies steam to the steam pipeline 30. Furthermore, due to the injection of marking fluid into the relay channel 125 via the marking fluid pipeline 20 (described later in detail), a pressure reversal occurs on both sides of the first one-way valve 121. Consequently, the first one-way valve 121 closes under the hydraulic pressure within the relay channel 125, and the steam pipeline 30 is unilaterally blocked by the first one-way valve 121, preventing fluid from flowing into the steam pipeline 30. On the other hand, the marking fluid in the marking fluid pipeline 20 can open the second one-way valve 122 and enter the relay channel 125. Driven by the relay module 12, it enters the working channel within the steam needle 4 through the relay channel 125 and is ejected from the jet orifice. This injects marking fluid at the puncture point when the steam needle 4 is withdrawn, thus marking the location.

[0070] That is, relay channel 125 serves as a direct supply source for injecting steam or labeling solution into the steam needle 4. When the steam needle 4 performs a puncture, it receives steam from the steam delivery unit 3; when the steam needle 4 performs a retraction, it receives labeling solution from the labeling solution delivery unit 2. Thus, during the retraction of the steam needle 4, labeling solution can be sprayed towards the area of ​​the urethral mucosa that has just undergone ablation, allowing the physician to visualize the treated area in the imaging.

[0071] According to the construction of the present invention, it is not necessary to set up a separate supply line for delivering the labeling liquid. Instead, the relay channel 125 is used as a source of supply for both steam and labeling liquid to the steam needle 4. The supply of steam and the supply of labeling liquid are performed in sequence during the puncture and retraction actions, respectively, thereby enabling the location marking of the treated area to be achieved in a compact structure.

[0072] Furthermore, the supply of marking solution can be switched immediately from steam to marking solution as the steam needle 4 begins its retraction. Since the steam needle 4 needs to penetrate the prostate to a certain depth for ablation, the marking solution is injected into the prostate before the steam needle 4 detaches from the urethral mucosa, and is sprayed onto the surface of the urethral mucosa after the steam needle 4 detaches from the urethral mucosa.

[0073] The labeling solution injected into the prostate remains recognizable in the imaging. For cases requiring clearer identification, it is preferable to spray as much of the labeling solution as possible onto the surface of the urethral mucosa. In this case, the supply of labeling solution from the liquid delivery unit 2 can be spaced at a predetermined time relative to the cessation of steam supply from the steam delivery unit 3, controlled by a control unit (not shown).

[0074] The labeling solution used in this application can be a staining agent used to mark the site of a single puncture, or it can be a contrast agent injected into the inner side of the urethral mucosa at the puncture site for further imaging. No specific limitation is made here.

[0075] It is worth noting that the staining or contrast agent is used only for visual annotation and does not affect human tissue. After the procedure, the labeling solution injected into the surface or interior of the urethral mucosa is rapidly metabolized by the body.

[0076] like Figure 2 As shown, the labeling liquid delivery unit 2 includes a reservoir 21 connected to the labeling liquid pipeline 20, and a squeeze member 22 at least partially disposed within the reservoir 21. Exemplarily, the reservoir 21 and the squeeze member 22 constitute a sleeved piston and cylinder structure.

[0077] The relay module 12 can drive the reservoir 21 or the extruder 22 to move back and forth, thereby driving the relative movement between the reservoir 21 and the extruder 22. For simplicity, this explanation will only take the example of the relay module 12 driving the reservoir 21 to move back and forth.

[0078] When the control steam needle 4 performs a retraction action, the relay module 12 can drive the reservoir 21 to move backward, thereby causing the extruder 22 to move relatively close to the reservoir 21, so as to extrude the marking liquid in the reservoir 21 and output it to the relay channel 125 through the marking liquid pipeline 20.

[0079] When the control steam needle 4 performs the puncture action, the relay module 12 can drive the reservoir 21 to move forward, thereby driving the squeezing member 22 to move relative to the reservoir 21, so that negative pressure is generated in the reservoir 21, and then the marking liquid is added to the reservoir.

[0080] As a preferred embodiment, the extruder 22 is provided with a marking liquid supply channel 221 that communicates with an external liquid source of the marking liquid, and a third one-way valve 23 that controls the fluid in the marking liquid supply channel 221 to flow unidirectionally out of the reservoir 21.

[0081] When the extruder 22 moves relative to the reservoir 21, a negative pressure is formed inside the reservoir 21. The third one-way valve 23 opens towards the reservoir 21, allowing the marking liquid to enter the reservoir 21 from the marking liquid supply channel 221. When the extruder 22 moves relative to the reservoir 21, the third one-way valve 23 closes, and the marking liquid supply channel 221 is unidirectionally blocked by the third one-way valve 23. The extruder 22 can then extrude the marking liquid in the reservoir 21, causing it to enter the relay channel 125 and the working channel of the steam needle 4 through the marking liquid pipeline 20, and finally be ejected from the jet hole at the front end of the steam needle 4.

[0082] Exemplarily, a communicating vessel 25 is also included, one side of which is fixed to the frame 31, and the other side is connected to the labeling liquid supply channel 221 in the extrusion member 22. In use, the inlet of the communicating vessel 25 is connected to a syringe that has already drawn in labeling liquid through a medical tubing, and the syringe plunger is suspended vertically. When a negative pressure is generated in the reservoir 21, the labeling liquid in the labeling liquid supply channel 221 pushes open the third one-way valve 23 and enters the reservoir 21, while the labeling liquid in the syringe also replenishes the labeling liquid supply channel 221.

[0083] As a preferred embodiment, the reservoir 21 or the extruder 22 is linked to the relay module 12 via a transmission assembly. Taking the reservoir 21 as an example, the transmission assembly is configured such that: during the puncture stroke of the steam needle 4, after the relay module 12 has moved a first preset distance, the transmission assembly begins to drive the labeling liquid delivery unit 2 to replenish the reservoir 21 with labeling liquid; and / or, during the retraction stroke of the steam needle 4, after the relay module 12 has moved a second preset distance, the transmission assembly begins to drive the labeling liquid delivery unit 2 to output labeling liquid to the relay channel 125.

[0084] like Figure 2 , Figure 3 As shown, in this embodiment, the transmission assembly includes an axially extending connecting arm 241 connected to the reservoir 21, and a puncture transmission part 242 connected to the front end of the connecting arm 241 and extending along the cross-section. Correspondingly, the relay module 12 is provided with a relay drive part 123 extending along the cross-section.

[0085] More preferably, the connecting arm 241 is also connected to a retraction transmission part 243 extending along the cross-section. In this embodiment, the retraction transmission part 243 extends in the same direction as the puncture transmission part 242. Preferably, the retraction transmission part 243 is located at the rear end of the connecting arm 241.

[0086] For ease of explanation, Figure 2 The orientation of the intermediate liquid reservoir 21 relative to the relay connection 120 is upward, and vice versa; the vertical direction is perpendicular to the axial direction. Figure 3 The puncture transmission part 242 extends laterally. For example, the plane formed by the connecting arm 241 and the puncture transmission part 242 is approximately parallel to the axial direction and perpendicular to the vertical direction.

[0087] As an example, the relay drive unit 123 extends upward from the outer peripheral wall of the relay connection unit 120, while the puncture transmission unit 242 extends laterally from the front end of the connecting arm 241. Preferably, the transmission assembly is an axially extending closed frame structure, with the connecting arm 241, the puncture transmission unit 242, and the retraction transmission unit 243 each forming one side of this closed frame structure. This closed frame structure can be an elongated ring, a quadrilateral, or other shapes, with a gap in the middle through which the relay drive unit 123 passes to facilitate transmission with the puncture transmission unit 242 and the retraction transmission unit 243.

[0088] In fact, the transmission assembly is not limited to the closed frame structure shown in the figure. It may also include only the connecting arm 241, the puncture transmission part 242, and the retraction transmission part 243. Alternatively, when the rear end of the connecting arm 241 is connected to the front end of the reservoir 21, the front end of the reservoir 21 functions as the retraction transmission part 243. In this case, the retraction transmission part 243 may not need to be set separately. When the relay drive part 123 retracts the second preset distance and abuts against the front end of the reservoir 21 and pushes the reservoir 21 to move backward, it is also within the protection scope of this application.

[0089] When the steam needle 4 is controlled to perform the puncture action, such as Figure 5 , Figure 6 As shown, in the initial stage of the puncture stroke, the relay drive unit 123 moves the first preset distance under the drive of the relay module 12 and then abuts against the puncture transmission unit 242. During this idle stroke, the third one-way valve 23 closes. Then, at the end of the puncture stroke, the reservoir 21 is moved forward via the puncture transmission unit 242 until the puncture transmission unit 242 reaches... Figure 1 As shown in the limiting part 244, during this process, a negative pressure is formed in the reservoir 21, and the labeling liquid in the labeling liquid supply channel 221 opens the third one-way valve 23 to replenish the reservoir 21. At the same time, the second one-way valve 122 closes, and the steam in the steam pipeline 30 can be forced open by the power of the steam delivery unit 3 to enter the relay channel 125 and finally spray out from the jet hole of the steam needle 4 to perform the treatment.

[0090] When the steam needle 4 performs a retraction action, in the initial stage of the retraction stroke, the relay drive unit 123, driven by the relay module 12, retracts the second preset distance and then comes into contact with the retraction transmission unit 243. Then, in the final stage of the retraction stroke, the retraction transmission unit 243 drives the liquid reservoir 21 to retract, causing the third one-way valve 23 to close. The marking liquid in the liquid reservoir 21, under the pressure of the extruder 22, enters the relay channel 125 through the marking liquid pipeline 20, and is then sprayed out from the jet hole of the steam needle 4 to complete the marking operation. Figure 4 The state shown.

[0091] In this embodiment, the labeling liquid pipeline 20 is also arranged as a flexible tube to pass through the hollow area of ​​the closed frame structure formed by the transmission assembly. The flexible tube structure of the labeling liquid pipeline 20 ensures that the transmission of the labeling liquid is not affected when it moves back and forth with the relay module 12.

[0092] The aforementioned first and second preset distances are equivalent to an empty journey. For example... Figure 5 , Figure 6 As shown, when the relay module 12 moves forward, it first drives the steam needle 4 to perform a puncture action, moving forward a first preset distance before driving the reservoir 21 forward, creating negative pressure in the reservoir 21 and replenishing the marking liquid. When the relay module 12 moves backward, it first drives the steam needle 4 to retract, moving backward a second preset distance before driving the reservoir 21 backward, allowing the marking liquid to enter the relay channel 125 and be ejected from the jet hole of the steam needle 4.

[0093] This is because after the steam needle 4 penetrates the urethral mucosa, it needs to go a certain distance deeper before the jet hole can reach the treatment site. The empty stroke corresponding to the first preset distance means that the reservoir 21 does not need to move with the relay module 12 throughout the entire stroke of the steam needle 4 puncture. Instead, it only needs to move a small distance to generate negative pressure inside, thereby allowing the marker liquid to be replenished into the reservoir 21. This reduces the movement stroke of the reservoir 21 and simplifies the device structure.

[0094] When the steam needle 4 is withdrawn, the jet orifice retracts a certain distance from the treatment site before reaching the needle hole in the urethral mucosa. If the marking liquid is sprayed too early during this process, it may not reach the vicinity of the needle hole in the urethral mucosa, thus failing to achieve the marking and identification effect. Therefore, the empty stroke corresponding to the second preset distance allows the reservoir 21 to avoid moving with the relay module 12 throughout the entire retraction stroke of the steam needle 4. Instead, the marking liquid in the reservoir 21 is sprayed out in time just as the jet orifice of the steam needle 4 is about to be withdrawn from the urethral mucosa, achieving a more significant marking effect.

[0095] As a preferred embodiment, both the first preset stroke and the second preset stroke are equal to the front-to-back distance between the puncture transmission unit 242 and the retraction transmission unit 243. When the relay module 12 moves, the relay drive unit 123 travels within the gap area formed by the transmission components. When the steam needle 4 performs the puncture action, the relay drive unit 123 moves forward from the retraction transmission unit 243 until it abuts against the puncture transmission unit 242. When the steam needle 4 performs the retraction action, the relay drive unit 123 moves backward from the puncture transmission unit 242 until it abuts against the retraction transmission unit 243.

[0096] More preferably, the length of the connecting arm 241 is adjustable to accommodate different puncture strokes of the steam needle 4.

[0097] In a preferred embodiment, the drive module 11 includes a solenoid coil (not shown) wound around the frame 31 and a magnetic element 124 fixed to the relay module 12 and cooperating with the solenoid coil, the magnetic element 124 being at least partially located within the solenoid coil. Furthermore, by controlling the current direction and voltage magnitude of the solenoid coil, the moving direction and speed of the relay module 12 can be controlled via the magnetic element 124, allowing it to switch between driving the steam needle 4 to perform a puncture action and a retraction action. The frame 31 is a cylindrical structure that runs through the entire length of the device, facilitating the passage of instruments such as the endoscope 7.

[0098] Considering the limited space of the human urethra, as a preferred method, such as Figure 1 As shown, this application integrates the drive unit 1, the labeling liquid delivery unit 2, and the steam delivery unit 3 into the handle housing 6, facilitating operation and improving the device's integration. More preferably, the treatment catheter 5 includes a puncture channel tube 51 for accommodating the steam needle 4 and an endoscope channel tube 52 for accommodating the endoscope 7. One side wall of the puncture channel tube 51 and the endoscope channel tube 52 are welded together, and an outer sleeve 53 is fitted over them to smooth the grooves on the outside of the composite tube body, improving the structural compactness.

[0099] As mentioned above, in the case where the labeling solution is sprayed onto the surface of the urethral mucosa as much as possible, a clever mechanical mechanism can be used to separate the supply of the labeling solution from the stop supply of steam to the steam delivery unit 3 by a predetermined time.

[0100] Next, the technical effects of this application will be explained.

[0101] The core advantage of this application lies in its ability to achieve precise, efficient, and sequential control of treatment (steam jetting) and auxiliary functions (labeling fluid management) from a single power source through a highly integrated and sophisticated mechanical transmission system. Its significant technical benefits are reflected in the following aspects:

[0102] First, the system achieves a high degree of integration and reuse of power and motion. The system creatively utilizes the single forward and backward power of the relay module 12 to not only drive the puncture and retraction of the steam needle 4, but also, through a clever "empty stroke" design and the aforementioned transmission components, sequentially transmits the same power to the reservoir 21, thereby completing the negative pressure replenishment of the pre-treatment labeling solution and the precise spraying of the post-treatment labeling solution. The steam flow and the labeling solution are completely isolated in the flow path, ensuring the purity of the treatment medium and the clarity of the labeling, while maximizing functional integration without adding any additional independent power units (such as micro-pumps or motors), greatly simplifying the system architecture.

[0103] Secondly, the electromagnetic drive characteristics are perfectly matched with clinical procedures. In the preferred embodiment, the relay module 12 is driven by an electromagnetic solenoid coil. The instantaneous strong thrust (ejection action) generated by its electromagnetization provides the necessary initial burst of force for the steam needle 4 to penetrate the tissue, facilitating rapid puncture and reducing tissue damage. Furthermore, rapid and controllable retraction of the relay module 12 can be achieved simply by changing the direction of the current. This characteristic allows the two core cyclic actions of forward (puncture, replenishment) and backward (retraction, marking) to be completed with only a single electromagnetic unit, eliminating the need for multiple coils or complex reversing mechanisms. This design is crucial for improving energy utilization efficiency and response speed.

[0104] Furthermore, the "empty travel" mechanism ensures excellent clinical precision. In the preferred method, the first preset distance (puncture empty travel) ensures that the reservoir 21 only moves forward slightly to replenish the marking fluid after the steam needle 4 reaches the vicinity of the treatment target, avoiding unnecessary long travel of the reservoir 21. The second preset distance (retraction empty travel) achieves the crucial delayed marking function: ensuring that the marking fluid is precisely sprayed only when the jet orifice of the steam needle 4 retracts to near the urethral mucosal puncture site, directly acting on the tissue around the puncture site to form a clear positional mark, greatly improving the accuracy of postoperative identification and subsequent treatment. This timing control is achieved purely by mechanical structure, is reliable, and requires no complex electronic control program.

[0105] Of particular note is the miniaturization and high reliability of this application. Precision instruments operating within narrow, space-constrained human cavities such as the urethra face extremely stringent requirements regarding size, reliability, and failure rate. This solution significantly reduces the number of parts, space requirements, and potential failure points by eliminating the independent drive source for the labeling fluid and simplifying transmission components (even utilizing the reservoir 21 itself for transmission). Mechanical, sequential linkage is more reliable than multi-system electronic control coordination. This design approach, which uses simple and ingenious mechanical principles to address complex functional requirements, not only reduces manufacturing costs and power consumption but also directly enhances the operational safety and overall reliability of the entire device in critical clinical scenarios.

[0106] It should be understood that the specific embodiments described above are only used to explain this application, and the scope of protection of this application is not limited thereto. Any changes, substitutions, or combinations made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and inventive concept of this application, should be covered within the scope of protection of this application.

Claims

1. A steam treatment device, characterized in that: comprising a driving unit, a steam delivery unit, a marking liquid delivery unit and a steam needle; the driving unit is used to drive the steam needle to perform a puncture action and a retraction action, comprising a driving module and a relay module, the relay module is in transmission connection with the steam needle and is provided with a relay channel which is in communication with a working channel in the steam needle; the steam delivery unit is used to supply steam, and is in communication with the relay channel through a steam pipeline; the marking liquid delivery unit is used to supply marking liquid, and is in communication with the relay channel through a marking liquid pipeline; when the steam needle performs the puncture action, the working channel is supplied with steam to perform a surgical operation; when the steam needle performs the retraction action, the working channel is supplied with marking liquid to perform a marking operation; wherein the marking liquid delivery unit comprises a liquid reservoir which is in communication with the marking liquid pipeline, and a pressing member which is at least partially arranged in the liquid reservoir; the relay module can drive the liquid reservoir or the pressing member to move reciprocally; when the steam needle is controlled to perform the retraction action, the relay module can drive the pressing member and the liquid reservoir to move relatively close to each other to press the marking liquid in the liquid reservoir to be output to the relay channel through the marking liquid pipeline. 2.The steam treatment device according to claim 1, characterized in that: the steam delivery unit is provided with a first one-way valve which controls the fluid in the steam pipeline to flow out of the relay channel unidirectionally; the marking liquid delivery unit is provided with a second one-way valve which controls the fluid in the marking liquid pipeline to flow out of the relay channel unidirectionally; when the relay module is driven by the driving module to control the steam needle to perform the puncture action, the marking liquid pipeline is unidirectionally cut off by the second one-way valve, and the steam in the steam delivery unit enters the working channel through the relay channel; when the relay module is driven by the driving module to control the steam needle to perform the retraction action, the steam pipeline is unidirectionally cut off by the first one-way valve, and the marking liquid in the marking liquid delivery unit enters the working channel through the relay channel under the drive of the relay module. 3.The steam treatment device according to claim 1, characterized in that: when the steam needle is controlled to perform the puncture action, the relay module can drive the pressing member and the liquid reservoir to move relatively apart from each other to generate a negative pressure in the liquid reservoir, and then to supplement the marking liquid in the liquid reservoir. 4.The steam treatment device according to claim 3, characterized in that: the pressing member is provided with a marking liquid supply channel which is in communication with a liquid source of marking liquid, and a third one-way valve which controls the fluid in the marking liquid supply channel to flow out of the liquid reservoir unidirectionally; when the pressing member and the liquid reservoir move relatively apart from each other, a negative pressure is formed in the liquid reservoir so that the marking liquid enters the liquid reservoir from the marking liquid supply channel; when the pressing member and the liquid reservoir move relatively close to each other, the marking liquid supply channel is unidirectionally cut off by the third one-way valve. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 5. The vapor therapy device of claim 4, wherein: one of the reservoir and the extrusion member that is reciprocally movable by the relay module is coupled to the relay module via a transmission assembly; the transmission assembly is configured to: during a puncture stroke of the vapor needle, initiate the transmission assembly to move the marker fluid delivery unit toward the reservoir after the relay module moves a first predetermined distance; and / or during a retraction stroke of the vapor needle, initiate the transmission assembly to move the marker fluid delivery unit toward the relay channel after the relay module moves a second predetermined distance.

6. The vapor therapy device of claim 5, wherein: a direction of movement of the relay module is an axial direction, and a plane perpendicular to the axial direction is a cross-sectional plane; the transmission assembly includes a connecting arm extending in the axial direction coupled to the reservoir, and a puncture transmission portion extending in the cross-sectional plane coupled to the connecting arm; the relay module includes a relay drive portion extending in the cross-sectional plane; when the vapor needle is controlled to perform a puncture action, the relay drive portion is brought into abutment with the puncture transmission portion after the relay module moves the first predetermined distance, and then the reservoir is moved via the puncture transmission portion.

7. The vapor therapy device of claim 6, wherein: the connecting arm further includes a retraction transmission portion extending in the cross-sectional plane; when the vapor needle is controlled to perform a retraction action, the relay drive portion is brought into abutment with the retraction transmission portion after the relay module retracts the second predetermined distance, and then the reservoir is retracted via the retraction transmission portion.

8. The vapor therapy device of claim 7, wherein: a length of the connecting arm is adjustable to accommodate different puncture strokes of the vapor needle.

9. The vapor therapy device of claim 7, wherein: the transmission assembly is an axially extending closed frame structure, and the connecting arm, the puncture transmission portion, and the retraction transmission portion each form a side of the closed frame structure.

10. The vapor therapy device of claim 9, wherein: the relay drive portion partially passes through an empty area of the closed frame structure; when the relay module moves, the relay drive portion travels in the empty area.

11. The vapor therapy device of claim 1 or 2, wherein: the drive module includes a solenoid and a magnetic member fixed to the relay module and cooperating with the solenoid; by controlling a current direction of the solenoid, a direction of movement of the relay module can be controlled via the magnetic member to switch between driving the vapor needle to perform a puncture action and to perform a retraction action.

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