Stone-breaking system and transoral cholangioscopy

Abstract

This invention discloses a lithotripsy system and a transoral cholangioscope. The lithotripsy system includes an interventional body, a fragmentation mechanism, and an output mechanism. The interventional body has a working channel extending proximally. The fragmentation mechanism includes a fragmentation component movably inserted proximally through the working channel, the outer diameter of which is smaller than the inner diameter of the working channel, thus defining an output cavity extending proximally between the outer wall of the fragmentation component and the inner wall of the working channel. The output mechanism is used to discharge material from the distal end of the interventional body proximally through the working channel. The lithotripsy system has a preset fragmentation mode, in which the fragmentation component moves to the distal end exposed in the working channel and can be activated to fragment the target area. The output mechanism can be activated to discharge the fragments generated after fragmentation proximally through the output cavity. This application allows lithotripsy and stone removal operations to be performed simultaneously when needed, which helps to simplify actual diagnostic and treatment operations, improve fragmentation quality, and enhance diagnostic and treatment reliability.

Description

Technical Field

[0001] This invention relates to the field of transoral cholangioscopy, specifically to a lithotripsy system and a transoral cholangioscopy endoscope. Background Technology

[0002] Transoral cholangioscopy is an advanced endoscopic tool for diagnosing and treating diseases of the bile duct and pancreatic duct. It is usually inserted into the bile duct and pancreatic duct through a duodenoscope, allowing direct visualization of lesions within the lumen and enabling the fragmentation and removal of stones in the bile duct.

[0003] Because the working channel in existing transoral cholangioscopy systems is typically set to be relatively small, stone fragmentation and removal cannot be performed simultaneously. Generally, these procedures are alternated: for example, in actual clinical practice, a laser fiber enters the bile duct through the pre-set working channel of the transoral cholangioscopy system to perform laser stone fragmentation. Then, the laser beam is withdrawn to create clearance before tools such as a basket are inserted through the working channel to retrieve the stones. Alternatively, negative pressure can be created within the working channel to suction out the stones. Summary of the Invention

[0004] The main objective of this invention is to propose a lithotripsy system and a transoral cholangioscope, which aims to solve the problem that existing transoral cholangioscopes have structural defects that prevent simultaneous lithotripsy and stone removal operations.

[0005] To achieve the above objectives, the present invention proposes a lithotripsy system for use in transoral cholangioscopy, the lithotripsy system comprising: The main body of the intervention extends in a long shape along the near and far directions, and a working channel runs through it along the near and far directions; A crushing mechanism includes a crushing element movably disposed along a working channel in a proximal direction, the outer diameter of the crushing element being smaller than the inner diameter of the working channel, so as to define a through-flow output cavity in a proximal direction between the outer wall of the crushing element and the inner wall of the working channel; and, An output mechanism acts on the working channel and is used to discharge material at the distal end of the intervention body towards the proximal end through the working channel; The crushing system has a preset crushing mode, in which the crushing component moves to the far end of the working channel and can be activated to crush the target area; the output mechanism can be activated to discharge the crushed material through the output cavity towards the near end.

[0006] Optionally, the crushing component includes a laser generating device, which is movably disposed along the proximal direction, and in the crushing mode, the laser generating device can be activated and emit a first laser, the intensity of which is set to the crushable target area.

[0007] Optionally, the interventional body is further provided with a detection channel along the proximal direction, and the lithotripsy system further includes a detection component, which is assembled in the detection channel, and at least the detection surface of the detection component is exposed at the distal end of the detection channel; In the fragmentation mode, at least the distal portion of the laser generator extends beyond the working channel to be spaced apart from the detection surface of the detection element.

[0008] Optionally, the intensity of the laser emitted by the laser generator can be adjusted; and / or, The stone crushing system is also preset with a special light mode, and in the special light mode, the laser generator can be activated and emit a second laser, and the intensity of the first laser is set to be no less than the intensity of the second laser.

[0009] Optionally, the interventional body is further provided with an input channel along the proximal direction, and the lithotripsy system further includes an input mechanism that acts on the input channel. The lithotripsy system is also preset with an input mode, and in the input mode, the input mechanism is activated to deliver external media to the distal end of the interventional body through the input channel.

[0010] Optionally, the lithotripsy system further includes a pressure detection device, which is used at least to detect the pressure value at the distal end of the interventional body; The pressure sensing device is electrically connected to the input mechanism and the output mechanism respectively, so that the pressure value can be obtained according to the parameter values ​​of the input mechanism and the output mechanism.

[0011] Optionally, the crushing system further includes a control component, which is electrically connected to the crushing mechanism, the input mechanism, and the output mechanism, respectively. In the crushing mode, the control unit controls the crushing mechanism, the input mechanism and the output mechanism to start respectively.

[0012] Optionally, the crushing system further includes a control component, which is electrically connected to the crushing mechanism, the input mechanism, the output mechanism, and the pressure detection device, respectively. In the crushing mode, the control component can adjust the parameter values ​​of the input mechanism and / or the output mechanism to maintain the pressure value within a preset pressure range.

[0013] Optionally, the interventional body is further provided with a detection channel along the proximal direction, and the lithotripsy system further includes a detection component, which is assembled in the detection channel, and at least the detection surface of the detection component is exposed at the distal end of the detection channel; The control component is also electrically connected to the detection element, and in the crushing mode, the control component can adjust the parameter values ​​of the input mechanism and / or the output mechanism according to the detection data of the detection element.

[0014] Optionally, in the breaking mode: The control component can increase the parameter value of the output mechanism accordingly when the detector element detects and confirms an increase in output demand; and / or, The control unit can increase the parameter value of the input mechanism accordingly when the detector element detects and confirms an increase in input demand.

[0015] Optionally, the interventional body is further provided with a detection channel along the proximal direction, and the lithotripsy system further includes a detection component, which is assembled in the detection channel, and at least the detection surface of the detection component is exposed at the distal end of the detection channel; The working channel and the detection channel are arranged sequentially along one radial direction of the interventional body, and the input channel is arranged in the remaining space of the interventional body; and / or, The input channel is provided with at least two, and each input channel is respectively located on both sides of the working channel along another radial direction of the intervention body; and / or, The inner diameter of the working channel is larger than the inner diameter of the detection channel; and / or, The inner diameter of the working channel is not less than 2.4 mm; and / or, The inner diameter of the detection channel is larger than the inner diameter of the input channel.

[0016] In addition, to achieve the above objectives, the present invention also provides a transoral cholangioscope, including an operating body and a lithotripsy system as described above; The proximal end of the intervention body is connected to the operating body, and the operating part of the crushing mechanism and / or the output mechanism is located at the operating body.

[0017] In the technical solution provided by the present invention, a sufficiently large space is reserved in the intervention body for the opening of the working channel, so that the inner diameter of the working channel can be set as large as possible.

[0018] The crushing element in the crushing mechanism is positioned within the working channel, moving along the proximal direction. Therefore, it can be inserted from the proximal end of the working channel and exposed at least at the distal end when needed. Because the outer diameter of the crushing element is smaller than the inner diameter of the working channel, an output cavity extending proximally is formed between the outer wall of the crushing element and the inner wall of the working channel, even during insertion of the crushing element. Thus, when the crushing system operates in crushing mode, while the crushing element is crushing the target area, the output mechanism can also be activated and act on the output cavity, allowing the crushed material from the target area to be discharged proximally from the output cavity.

[0019] This application, through a simple structural improvement, enables the lithotripsy and lithotripsy operations to be performed simultaneously when needed, avoiding cumbersome repeated replacement operations. This not only simplifies actual diagnostic and treatment procedures, but also improves the quality of lithotripsy and the reliability of diagnosis and treatment through the essentially synchronized execution of lithotripsy and lithotripsy operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A three-dimensional schematic diagram of an embodiment of the transoral cholangioscope provided by the present invention; Figure 2 for Figure 1 A three-dimensional schematic diagram of a medium-sized crushing system; Figure 3 for Figure 2 A schematic diagram showing the main structural breakdown of a medium-sized crushed stone system; Figure 4 for Figure 2 Axial plan view of the medium-sized crushed stone system; Figure 5 for Figure 2 A radial plane diagram of a medium-sized crushed stone system.

[0022] Explanation of icon numbers: 100 Operating body; 200 Intervention body; 210 Head end structure; 211 Working channel; 211a Output cavity; 212 Input channel; 213 Detection channel; 300 Fragmented part; 310 Laser generating device; 320 Support; 321 Main frame; 321a Assembly channel; 322 Support arm; 400 Detection components; 410 First detection unit; 420 Second detection unit.

[0023] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0027] Please see Figures 1 to 5 The present invention provides a lithotripsy system and an applicable transoral cholangioscope thereof. In addition to the lithotripsy system described below, the transoral cholangioscope may also include an operating body 100.

[0028] like Figure 1 The illustrated structure allows the operating body 100 to optionally adopt a grip-type operating handle. In this case, the operating body 100 is connected to an external plug via a connecting cable, which provides signal and power transmission between the operating body 100 and the external device. Operating components, such as knobs or latches, may be provided on the surface of the operating body 100, but specific operating components or button logic are not essential.

[0029] The crushing system includes an intervention body 200, a crushing mechanism, and an output mechanism.

[0030] The interventional body 200 extends elongatedly along the proximal-distal direction. The interventional body 200 forms part of the insertion portion of the transoral cholangioscopy. The distal end of the interventional body 200 is used to approach the target site, specifically, for example, configured as a tip structure 210. The proximal end of the interventional body 200 is used to connect to the operating body 100 of the transoral cholangioscopy. A working channel 211 extends through the interventional body 200 along the proximal-distal direction.

[0031] The crushing mechanism includes a crushing component 300 movably disposed along the working channel 211 in the proximal direction. The crushing mechanism may also include, for example, a crushing operation section. This crushing operation section may be optionally located at the operating body 100. This allows the operator to perform corresponding operations on the crushing component 300 from outside the operating body 100 by operating the crushing operation section. Specifically, for example, the crushing component 300 can be advanced, retracted, or held in a predetermined working position along the length of the intervening body 200. The distal end of the crushing component 300 can be exposed from the distal end of the working channel 211 and approach the target area when crushing is required.

[0032] The inner diameter of the working channel 211 is larger than the outer diameter of the crusher 300. When the crusher 300 is located inside the working channel 211, a through-space is maintained between the outer wall of the crusher 300 and the inner wall of the working channel 211. This through-space constitutes the output cavity 211a. In this way, the output cavity 211a does not require the creation of a separate channel within the intervention body 200, but is naturally maintained by the dimensional fit between the crusher 300 and the working channel 211.

[0033] In other words, when the crusher 300 occupies a portion of the cross-section of the working channel 211, the remaining space of the working channel 211 can still form a crushed material output path extending in the proximal direction. This structural relationship ensures that the crusher 300 does not completely block the path of material moving towards the proximal end by entering the working channel 211.

[0034] The output mechanism acts on the working channel 211. Of course, it can also act on the output cavity 211a when needed. The function of the output mechanism is to transport the material (including the fragments described below) at the distal end of the intervention body 200 proximally through the working channel 211 / output cavity 211a, and finally discharge it outward from the proximal end of the working channel 211 / output cavity 211a.

[0035] The output mechanism need not be limited to a specific type of power mechanism, as long as it can act on the working channel 211 / output cavity 211a and cause the material to move along the working channel 211 / output cavity 211a toward its proximal end.

[0036] In practical applications, the crushing system has preset crushing modes through program control, mechanical structure triggering, and other means. When the crushing system responds to the triggering of the crushing mode and enters the crushing mode, the crushed part 300 can be operated to insert into the working channel 211 and move further away, so that at least a part of the crushed part 300 is exposed at the far end of the working channel 211.

[0037] Once the crushing component 300 is exposed, its orientation in the crushing mode is set. Functionally, the crushing mechanism can then be activated to crush a target area located near the distal end of the interventional body 200 via the crushing component 300. The target area can be stones or other materials to be crushed within the bile duct.

[0038] Since the crushing component 300 acts on the target area, the crushing action location is adjacent to the location where the crushed material is generated. Therefore, the output channel 211a can be used to control the output mechanism to act synchronously or at the appropriate time on the working channel 211 / output channel 211a, so that the generated crushed material is conveyed proximally through the output channel 211a and finally discharged outward from the proximal end of the output channel 211a. Thus, while ensuring that the crushing component 300 maintains its working position in the working channel 211 and performs its crushing function, the output channel 211a still retains space for the crushed material to pass through, reducing the need to change tools or perform separate stone cleaning after crushing.

[0039] In the technical solution provided by the present invention, a sufficiently large space is reserved in the intervention body 200 for the opening of the working channel 211, so that the inner diameter of the working channel 211 can be set as large as possible.

[0040] The crushing component 300 in the crushing mechanism is movable along the proximal direction within the working channel 211, so it can be inserted from the proximal end of the working channel 211 and at least exposed at the distal end of the working channel 211 when needed. Since the outer diameter of the crushing component 300 is smaller than the inner diameter of the working channel 211, an output cavity 211a extending along the proximal direction can still be formed between the outer wall of the crushing component 300 and the inner wall of the working channel 211, even while the crushing component 300 is being inserted. Thus, when the crushing system is operating in crushing mode, while the crushing component 300 is crushing the target area, the output mechanism can also be activated and act on the output cavity 211a, allowing the crushed material from the target area to be discharged proximally from the output cavity 211a.

[0041] This application, through a simple structural improvement, enables the lithotripsy and lithotripsy operations to be performed simultaneously when needed, avoiding cumbersome repeated replacement operations. This not only simplifies actual diagnostic and treatment procedures, but also improves the quality of lithotripsy and the reliability of diagnosis and treatment through the essentially synchronized execution of lithotripsy and lithotripsy operations.

[0042] In practical applications, the relative orientation of the crushed part 300 within the working channel 211 will affect the specific shape and opening of the output cavity 211a to a certain extent, ultimately affecting the transmission / discharge efficiency of the crushed material through the output cavity 211a.

[0043] Specifically, if the working channel 211 has a central axis extending in the proximal direction: When the crusher 300 is offset relative to the central axis, but still suspended within the working channel 211, the radial cross-sectional shape of the output cavity 211a, defined by the crusher 300 and the working channel 211, is annular. However, this annular shape is configured with uneven width along its circumference.

[0044] When the crusher 300 is offset relative to the central axis, but the crusher 300 abuts against one side of the working channel 211, the radial cross-sectional shape of the output cavity 211a defined by the crusher 300 and the working channel 211 is equivalent to a crescent shape.

[0045] When the crusher 300 is basically aligned with the central axis, the crusher 300 is suspended in the working channel 211, and the radial cross-sectional shape of the output cavity 211a defined by the crusher 300 and the working channel 211 is annular. The annulus is set to have a basically uniform width along its circumference.

[0046] In the crushing mode, the fact that the crushed part 300 is at least exposed at the far end of the working channel 211 can mean that the far end surface of the crushed part 300 is basically flush with the plane where the far end of the working channel 211 is located, is concave relative to the plane where the far end of the working channel 211 is located, or is convex relative to the plane where the far end of the working channel 211 is located.

[0047] In the crushing mode, there are several ways in which the crushing component 300 can be activated to perform the crushing function. These methods can include mechanical impact (without harming the human body) or energy impact.

[0048] For example, in one embodiment, the crushing component 300 may include a laser generator 310. The laser generator 310 is movably disposed along the proximal-rear direction and can be advanced distally or retracted proximally along with the crushing component 300 in the working channel 211. In crushing mode, the laser generator 310 moves to a position suitable for approaching the target area, such that its distal end is exposed at the distal end of the working channel 211. Once in position (or simultaneously, the timing is not limited), the laser generator 310 is activated, for example by means of a crushing operation section disposed at the operating body 100. The laser generator 310 then emits a first laser beam.

[0049] The intensity of the first laser is set to be sufficient to break the target area. That is, at least for the purpose of breaking the target area, the intensity of the first laser is sufficiently high. Furthermore, in terms of human safety, the intensity of the first laser is sufficiently safe.

[0050] The laser generator 310 can adjust the first position of the first laser by moving along the proximal direction, so that the laser lithotripsy operation can be performed after the interventional body 200 enters the target area through the bile duct. The wavelength, power, pulse form and duration of the first laser can be selected according to the actual application needs, and this embodiment is not limited to specific parameters.

[0051] The crushing component 300 is not limited to using only the laser generator 310. The laser generator 310 is one specific configuration of the crushing component 300. In other possible embodiments, the crushing component 300 may also adopt other structures that can move to a remote end via the working channel 211 and apply a crushing action to the target part.

[0052] Regardless of the type of crushing component 300 used, as long as the outer diameter of the crushing component 300 is smaller than the inner diameter of the working channel 211, and an output cavity 211a is maintained between them in the near and far directions, the crushing and crushed material output can have a structural basis for simultaneous or alternating cooperation.

[0053] The movement of the laser generator 310 along the near and far directions can be achieved by manual propulsion and retraction, or by combining it with the transmission structure of the crushing system, but it does not require the installation of an automatic positioning mechanism.

[0054] Furthermore, in the breaking mode, the laser generating device 310 can move with the broken piece 300 from the working channel 211 to the far end. When it is necessary to exit the target area or change the operating state, it can also retreat back into the working channel 211 in the opposite direction, or eventually detach from the near end of the working channel 211.

[0055] By positioning the laser generator 310 at the far end of the working channel 211, the first laser emitted by the laser generator 310 can be more specifically targeted towards the target area. The output action of the output mechanism through the working channel 211 ensures that the crushed fragments do not all remain in the far-end area, allowing the laser generator 310 to perform crushing and the fragments to be output closer to the target area in a coordinated manner, thus balancing the crushing operation at the target area and the fragment discharge requirements.

[0056] It should be noted that the timing of the output mechanism's activation is not limited after the crusher 300 performs its crushing function: depending on actual needs, the output mechanism can be activated before, simultaneously, or appropriately afterward. However, in the case of delayed activation, it must be before the crusher 300 completes its crushing function or before the crusher 300 retracts; otherwise, it is essentially no different from existing technology.

[0057] Next, still using the laser generator 310 as an example of the fragment 300 embodiment, the intervention body 200 may also have a detection channel 213 extending along the proximal direction. The detection channel 213 is separate from the working channel 211. The two can be spaced apart from each other in the radial cross section of the intervention body 200.

[0058] The lithotripsy system also includes a detection element 400. The detection element 400 is assembled within the detection channel 213. The detection element 400 has at least one detection surface facing the distal end, which is exposed at the distal end of the detection channel 213. Similarly, "exposed detection surface" means that the surface of the detection element 400 used to acquire distal information is not completely enclosed within the detection channel 213, but can form a detection base facing the distal region of the intervention body 200. Furthermore, the detection surface can be substantially flush with the plane of the distal opening of the detection channel 213, concave relative to the plane of the distal opening of the detection channel 213, or convex relative to the plane of the distal opening of the detection channel 213.

[0059] The specific type of the detection component 400 is not limited. Furthermore, it can include one or at least two detection units as needed. Taking a standard setup for an endoscope product as an example: The detection device 400 may include a first detection unit 410. The first detection unit 410 may be an imaging unit. Specifically, it may be, but is not limited to, a CMOS (Complementary Metal-Oxide-Semiconductor) image sensor, whose imaging surface constitutes the detection surface of the detection device 400.

[0060] The detection component 400 may further include a second detection unit 420. The second detection unit 420 may be an illumination unit, such as an LED lamp body, primarily used for illumination during the imaging process of the CMOS image sensor.

[0061] In the breaking mode, the laser generator 310 emits a relatively large amount of energy when it emits the first laser. To prevent the energy generated by the laser generator 310 from damaging or affecting the detection element 400, it is generally possible to further extend at least a distal portion of the laser generator 310 beyond the working channel 211 in the breaking mode. This distal portion is the part of the laser generator 310 in the distal region used to approach the target area and emit the first laser.

[0062] At least the distal portion of the laser generator 310 is spaced apart from the detection surface of the detection element 400. This spaced-apart arrangement means that there is a separation distance between them, and the distal portion of the laser generator 310 and the detection surface are not arranged at the same distal position, nor are they attached to each other.

[0063] When the laser generator 310 extends distally from within the working channel 211, its distal section forms a laser action position facing the target area. The detection surface of the detection element 400 is exposed distally through the detection channel 213, forming a detection position facing the distal region. Both rely on different channels to form distal working conditions, ensuring that the exposure of the laser generator 310 does not presuppose that the detection surface is in the same position as it. By exposing the laser generator 310 outside the working channel 211 and maintaining a distance from the detection surface, the spatial distance between the laser generator 310 and the detection element 400 is increased, providing a structural basis for reducing the risk of laser heat affecting the detection element 400 during stone breaking.

[0064] Of course, this spacing does not mean that heat effects can be completely avoided, but rather that spatial separation reduces the possibility of the detection component 400 being directly affected by laser heat. When the laser generator 310 advances, holds, or retracts at the break position, it can maintain the separation relationship between at least its distal segment and the detection surface. However, the specific size of this separation distance, the specific relative orientation of the two in the distal region, and the specific extension length of the laser generator 310 are not limited to this embodiment.

[0065] The detection surface of the detection element 400 faces the remote area, allowing detection of the remote area before, during, or after the laser generator 310 moves to the breakage position. Since the laser generator 310 and the detection element 400 are respectively arranged in the working channel 211 and the detection channel 213, they can form relatively independent remote working positions along their respective channels.

[0066] Of course, taking the broken component 300, including the laser generating device 310, as an example: In one specific embodiment, the intensity of the laser emitted by the laser generator 310 is adjustable. This adjustable setting means that the laser generator 310 can output lasers with different intensity relationships under different working requirements, without being limited to a preset fixed level, a specific adjustment algorithm, or a specific control method. The adjustable laser intensity emitted by the laser generator 310 can be stepless or stepped.

[0067] Based on this, for example, in addition to the crushing mode, the stone crushing system can also be preset with a special light mode. The special light mode and the crushing mode can be set as different preset working states. In the special light mode, the laser generator 310 can be moved to a second operating position and can be activated to emit a second laser.

[0068] The first and second action positions can be set to be the same, or they can be set to be different depending on actual needs.

[0069] Of course, the intensity of the first laser and the intensity of the second laser can be set to be the same, or they can be set to be different according to actual needs.

[0070] However, generally speaking, considering that the crushing function requires more energy, the intensity of the first laser can be specifically set to be no less than the intensity of the second laser, so that the intensity relationship between the first laser in the crushing mode and the second laser in the special light mode can be distinguished.

[0071] In some implementations, adjustable laser intensity and a special light mode can be used individually or simultaneously. That is, the rock-breaking system may only have adjustable laser intensity without needing a special light mode. Alternatively, a special light mode may be set to emit a second laser, without being limited to a specific multi-level intensity adjustment strategy; or both may coexist. The specific purpose of the second laser is not limited to illumination, ranging, imaging, or other undescribed uses; its functional boundary is that it is emitted by the laser generator 310 under the special light mode, and its intensity is not higher than that of the first laser. The first laser has an intensity not lower than that of the second laser, which helps to distinguish the breaking mode and the special light mode based on the laser intensity relationship.

[0072] From the perspective of the assembly and movement relationship between the crushing component 300 and the main body 200, there are various specific structural implementations. For example, in one embodiment, the crushing component 300 also includes a support 320. The support 320 is movably installed in the working channel 211 along the proximal direction.

[0073] The bracket 320 may specifically include a main frame 321 and a support arm 322. The main frame 321 extends along the periphery to form an assembly channel 321a. The laser generator 310 is assembled at the assembly channel 321a. The function of the assembly channel 321a is to provide installation space for the laser generator 310 arranged along the bracket 320, without requiring the assembly of other devices.

[0074] The outer diameter of the main frame 321 is smaller than the inner diameter of the working channel 211, allowing for a space between the outer periphery of the main frame 321 and the inner wall of the working channel 211. The support arm 322 extends radially from the outer wall of the main frame 321 and abuts against the inner wall of the working channel 211. Radial refers to the direction relative to the central axis of the main frame 321 towards the outer periphery. As the support arm 322 extends outward from the outer wall of the main frame 321 until it contacts the inner wall of the working channel 211, it provides radial support to the main frame 321, preventing uncontrolled lateral displacement within the working channel 211. After the laser generator 310 is assembled into the assembly channel 321a of the main frame 321, it is supported and positioned by the support arm 322, thus achieving a relatively stable arrangement within the working channel 211.

[0075] The main frame 321, the support arm 322, and the working channel 211 together define the output cavity 211a. Specifically, the main frame 321 is located inside the working channel 211, and the support arm 322 extends from the main frame 321 towards the inner wall of the working channel 211, forming a partial support position. The inner wall of the working channel 211 constitutes the outer boundary of the output cavity 211a. The support arm 322 abutting against the inner wall of the working channel 211 at a partial position does not mean that the main frame 321 and the support arm 322 completely block the working channel 211. The space of the working channel 211 not occupied by the main frame 321 and the support arm 322 can form an output cavity 211a that runs through the periphery, allowing the debris generated after crushing to be discharged towards the proximal end through the output cavity 211a while the support 320 supports the laser generating device 310.

[0076] Therefore, the bracket 320 is not only used to fix the laser generator 310. The main frame 321 forms an assembly channel 321a, providing a mounting base for the laser generator 310. The support arm 322 abuts against the inner wall of the working channel 211, providing radial support for the main frame 321 and the laser generator 310. The main frame 321, the support arm 322, and the working channel 211 together form the output cavity 211a, allowing the support and positioning structure and the debris discharge space to coexist.

[0077] Specifically, the main frame 321 is located within the working channel 211, and the support arm 322 only provides support where it extends radially to the inner wall of the working channel 211. The unoccupied space around the main frame 321 and between adjacent support arms 322 can communicate with the output cavity 211a. Therefore, the abutment position of the support arm 322 establishes the positioning conditions of the main frame 321 relative to the working channel 211, but does not automatically close the entire cross-section of the working channel 211. The output cavity 211a can maintain its proximal-remote continuity while the support 320 occupies the internal space of the working channel 211.

[0078] When the fragments generated after crushing are located near the distal end of the intervention body 200, they can enter the output cavity 211a, which is jointly defined by the main frame 321, the support arm 322 and the working channel 211, and be discharged towards the proximal end when the output mechanism acts on the working channel 211.

[0079] The laser generator 310 can be fixedly assembled relative to the main frame 321. In this case, the movement of the bracket 320 can cause the laser generator 310 to move together. During fixed assembly, the relative position between the laser generator 310 and the main frame 321 remains unchanged. When the bracket 320 moves along the proximal direction in the working channel 211, the laser generator 310 can move together with the main frame 321. This method helps to ensure that the positioning state of the laser generator 310 corresponds to the support state of the bracket 320.

[0080] Of course, the laser generator 310 can also be movably assembled relative to the assembly channel 321a. In this case, the support formed by the main frame 321 and the support arm 322 can still provide a positioning basis for the advancement or retraction of the laser generator 310. This combination relationship can prevent the support 320 from blocking the working channel 211 due to its positioning function, and can take into account both the far-end working position of the laser generator 310 and the near-end output path of the debris. After the orientation of the main frame 321 relative to the working channel 211 is fixed, the laser generator 310 can also be adjusted to move relative to the main frame 321 in the near-end direction according to actual needs. For example, the laser generator 310 can be advanced or retracted relative to the main frame 321 within the assembly channel 321a.

[0081] At least two support arms 322 can be provided at circumferential intervals along the main frame 321. The circumferential direction is the direction of circumference around the central axis of the main frame 321. When at least two support arms 322 are provided, different support arms 322 can form radial support points at different positions on the outer periphery of the main frame 321, so that the main frame 321 has multiple support positions relative to the inner wall of the working channel 211.

[0082] The number of support arms 322 is not limited to two, nor is it necessary to limit the specific cross-sectional shape, length, or material. Multiple support arms 322 can be used to form multiple partial contact positions, and the space for the output cavity 211a is reserved between adjacent support arms 322.

[0083] The support arm 322 can be fixed relative to the main frame 321. In the fixed state, the relative position between the support arm 322 and the main frame 321 remains stable. When the main frame 321 moves, the support arm 322 moves together with the main frame 321 and maintains the preset support state.

[0084] As an alternative implementation, the support arm 322 can also be movable and adjustable relative to the bracket 320. Movable adjustment means that the position or support state of the support arm 322 relative to the bracket 320 can be adjusted so that the support arm 322 can form a corresponding abutment state within the working channel 211.

[0085] During its movement, the outrigger 322 can achieve, for example, adjustable protrusion height relative to the main frame 321, adjustable circumferential position relative to the main frame 321, and adjustable position relative to the main frame 321 in the near-far direction.

[0086] This movable adjustment method is not limited to a specific drive mechanism, adjustment stroke, or locking structure. The fixed support arm 322 helps maintain a relatively stable positioning relationship, while the movable and adjustable support arm 322 provides an optional means of adjusting the support state.

[0087] In addition, the crushing system may also include a pressure detection device. The pressure detection device is used to detect the pressure value at at least the distal end of the intervention body 200. The pressure value is used to characterize the pressure state near the distal end of the intervention body 200. The pressure detection device must have the function of acquiring the pressure state at the distal end, so that the pressure situation in the distal area during crushing, external media feeding, and material output is known. There are no restrictions on the specific installation method, signal processing method, or pressure value calculation method of the pressure detection device.

[0088] In one specific embodiment, the interventional body 200 may also have an input channel 212 extending along the proximal direction. The input channel 212 and the working channel 211 serve different functions. The input channel 212 provides a path for the external medium to be transported to the distal end. The working channel 211 and its output cavity 211a provide a path for the material to be output to the proximal end.

[0089] The lithotripsy system includes an input mechanism that acts on the input channel 212. The input mechanism acts on the input channel 212 to allow external media to be delivered along the input channel 212 to the distal end of the interventional body 200. The external media is not limited to cleaning fluid, flushing fluid, or other specific media types. For example, it could be physiological saline.

[0090] The crushing system also has a preset input mode. When the input mode is entered, the input mechanism is activated, and external media is delivered to the distal end of the intervention body 200 through the input channel 212, which can perform, for example, flushing, the distal environment of the intervention body 200. The direction in which the input mechanism delivers external media to the distal end is opposite to the direction in which the output mechanism discharges material along the working channel 211 toward the proximal end.

[0091] The input and output mechanisms can be activated separately or in conjunction during the same operation, depending on actual operational needs. For example, in crushing mode, the input mechanism can be activated as needed to achieve the triple functions of crushing, cleaning, and washing.

[0092] The input mechanism forms a distal feeding path via input channel 212, and the output mechanism forms a proximal discharge path via working channel 211 and output cavity 211a. Together, they constitute the matching conditions for feeding and discharging. These matching conditions can provide a basis for pressure balance regulation in the distal region, but do not mean that constant pressure control or a preset pressure threshold must be implemented.

[0093] At this time, the pressure sensing device is electrically connected to both the input and output mechanisms. This electrical connection enables the pressure sensing device to establish a signal association with both the input and output mechanisms. Specifically, the electrical connection between the pressure sensing device and the input mechanism corresponds to the working state where external media is conveyed to the remote end via input channel 212, while the electrical connection between the pressure sensing device and the output mechanism corresponds to the working state where material is discharged towards the near end via working channel 211. The pressure sensing device can obtain the pressure value based on the parameter values ​​of the input and output mechanisms. These parameter values ​​are used as the basis for associating the remote input and near-end discharge states.

[0094] The pressure value obtained by the pressure detection device corresponds to the pressure state at the distal end of the intervention body 200. Therefore, in different states where the input mechanism is started alone, the output mechanism is started alone, or the input and output mechanisms are started in combination, the pressure detection device can use the corresponding parameter values ​​of the input and output mechanisms as the basis for obtaining the pressure value, without requiring that the input and discharge must be performed in a fixed starting sequence or duration.

[0095] The specific parameter types, sampling methods, calculation rules, and processing procedures are not limited to flow rate, power, speed, or other specific parameters, nor are they restricted to using specific pressure calculation formulas. By electrically connecting the pressure detection device to the input and output mechanisms respectively, and obtaining the pressure value based on the parameter values ​​of the input and output mechanisms, a correlation can be established between the remote pressure value and the actual medium input and material output states. This correlation provides a basis for knowing the remote pressure state during crushing, input, or output processes, and provides parameter conditions for pressure balance adjustment based on the input and output states, but it does not mean that specific pressure thresholds, automatic control logic, or constant pressure control methods must be set.

[0096] When, for example, under the constraints of a control component and a preset control program, the pressure detection device is electrically connected to the input mechanism and the output mechanism respectively, and the pressure value is obtained according to the parameter values ​​of the input mechanism and the output mechanism, it is possible to achieve, for example, stabilize the pressure value, adjust the relationship between the pressure value of the input channel 212 and the pressure value of the output cavity 211a.

[0097] For example, during one operation in crushing mode, the control unit can separately control the start of the crushing mechanism, output mechanism, and input mechanism. Correspondingly, the crushed component 300 can be in the far-end working position of the crushing mode, and the output mechanism discharges the crushed material towards the near end through the output cavity 211a. The input mechanism can be in input mode, delivering external media to the far end of the intervention body 200 through the input channel 212. The pressure detection device obtains the far-end pressure value based on the parameter values ​​of the input and output mechanisms. Therefore, the far-end pressure state does not exist independently of the feeding and discharging process, but can be parameter-correlated with the actual working state of the input and output mechanisms.

[0098] Similarly, during one operation in crushing mode, the control unit not only controls the crushing mechanism, input mechanism, and output mechanism to start and operate as described above, enabling the crushing of stone to also perform stone suction and washing functions simultaneously. Furthermore, during this period, the control unit is electrically connected to the pressure detection device, input mechanism, and output mechanism, and can adjust the pressure value accordingly when the specific parameter values ​​of the input mechanism and / or output mechanism are adjusted, thereby stabilizing the pressure value within a preset pressure range and maintaining pressure balance.

[0099] Furthermore, as described above, the intervention body 200 is also provided with a detection channel 213 extending from the proximal end. The lithotripsy system also includes a detection element 400. The detection element 400 is mounted on the detection channel 213, and at least the detection surface of the detection element 400 is exposed at the distal end of the detection channel 213.

[0100] In this configuration, the control unit can also be electrically connected to the detection element 400. For example, the first detection unit 410 in the detection element 400 captures image data of the surrounding environment. Based on this image data, the control unit can determine the current actual operating status of the crushing mechanism, the input mechanism, and / or the output mechanism. It can also adjust the actual parameter values ​​of the crushing mechanism, the input mechanism, and / or the output mechanism as needed to ensure better crushing, suction, and / or flushing.

[0101] One scenario is that the control unit can increase the parameter value of the output mechanism when the detection element 400 detects and confirms an increase in output demand. Specifically, for example, when the first detection unit 410 detects that the amount of crushed material produced by the crushing operation performed by the crusher 300 is large, it is basically determined that the current output demand has increased. At this time, the pressure value can be referenced, and the operating parameters of the output mechanism can be controlled to increase, allowing the output mechanism to accelerate stone removal.

[0102] Similarly, another scenario is that the control unit can increase the parameter value of the input mechanism when the detection element 400 detects and confirms an increase in input demand. Specifically, for example, when the first detection unit 410 detects that the debris generated by the crushing operation performed by the crushing component 300 is causing excessive obstruction to the imaging unit and the illumination unit, it is basically determined that the current input demand has increased. At this time, the pressure value can be referenced, and the operating parameters of the input mechanism can be controlled to accelerate the injection of external media and clean the detection environment.

[0103] Furthermore, in the embodiment of the multi-channel intervention body 200, a working channel 211, a detection channel 213, and an input channel 212 can be simultaneously provided within the intervention body 200. The working channel 211 provides space for the insertion of the crushed component 300 and the formation of the output cavity 211a. The detection channel 213 is used to assemble the detection element 400 and expose the detection surface at the distal end. The input channel 212 is used to transport external media to the distal end. Each channel is formed by different internal spaces of the intervention body 200, allowing crushing, material output, distal detection, and external media input to be performed through the corresponding channels. Regarding the exposure state of the detection surface of the detection element 400 and its spacing relationship with the distal end of the laser generator 310, please refer to the aforementioned embodiment of the detection element 400. Regarding the relationship between the input mechanism, the output mechanism, and the pressure value acquisition, please refer to the aforementioned embodiment of pressure detection.

[0104] The working channel 211 and the detection channel 213 are arranged sequentially along a radial direction of the interventional body 200. Here, a radial direction is a radial direction within the cross-section of the interventional body 200. Arranging them sequentially along a radial direction means that the working channel 211 and the detection channel 213 occupy corresponding positions in the cross-section of the interventional body 200 according to an adjacent or sequential relationship.

[0105] The input channel 212 is arranged within the remaining space of the interventional body 200. The remaining space is the available space relative to the areas already occupied by the working channel 211 and the detection channel 213, rather than an independently added cavity. By allocating space for the working channel 211, the detection channel 213, and the input channel 212 within a limited cross-section, different functional paths can be provided within the same interventional body 200.

[0106] One input channel 212 may be provided, or at least two input channels 212 may be provided. When at least two input channels 212 are provided, each input channel 212 may be arranged on both sides of the working channel 211 along another radial direction of the intervention body 200. This other radial direction may be different from the radial direction in which the working channel 211 and the detection channel 213 are arranged sequentially, so that the two or more input channels 212 form relatively separate input paths using the space on both sides of the working channel 211.

[0107] Having at least two input channels 212 positioned on either side of the working channel 211 is an optional layout, and it is not required that all implementations simultaneously provide multiple input channels 212. When using one input channel 212, the input channel 212 can also be arranged in the remaining space of the intervention body 200; when using at least two input channels 212, the internal space of the intervention body 200 can be utilized by distributing them in another radial direction.

[0108] The inner diameter relationship between the working channel 211, the detection channel 213, and the input channel 212 can be set in one or more of the following ways, but the main purpose is to maximize the radial cross-sectional area of ​​the working channel 211: The inner diameter of the working channel 211 is larger than the inner diameter of the detection channel 213. Specifically, the inner diameter of the working channel 211 can be set to be no less than 2.4 mm. This provides space for the crushed part 300 to pass through the working channel 211 and for the output cavity 211a to be retained on its outer periphery.

[0109] The inner diameter of the detection channel 213 is larger than the inner diameter of the input channel 212, forming a size distribution relationship corresponding to the assembly requirements of the detection component 400 and the input requirements of the external medium.

[0110] The above inner diameter relationships exist in an "AND / OR" manner. Each relationship can be used independently or in combination according to the actual channel layout. They do not constitute a unique and irreplaceable combination of dimensions.

[0111] The multi-channel layout allows the working channel 211, detection channel 213, and input channel 212 to form relatively independent functional conditions. The crushing component 300 in the working channel 211 can be moved to the far end for crushing, and the output cavity 211a is used for discharging the crushed material towards the near end; the detection channel 213 allows the detection surface of the detection element 400 to face the far end; the input channel 212 can be used to transport external media to the far end.

[0112] After the working channel 211, detection channel 213, and input channel 212 are radially spatially allocated within the cross-section of the intervention body 200, the space for the crushed part 300 to pass through, the assembly space for the detection element 400, and the input space for the external medium do not need to be sequentially occupied by the same channel, thus giving each function a corresponding channel basis. Especially when the crushed part 300 is located within the working channel 211 and an output cavity 211a is formed between its outer wall and the inner wall of the working channel 211, the crushed material can still be discharged towards the proximal end through the output cavity 211a in the working channel 211. The detection element 400 can keep its detection surface exposed at the distal end through the detection channel 213. The input mechanism can also send the external medium to the distal end through the input channel 212. When at least two input channels 212 are provided and are distributed along another radial direction on both sides of the working channel 211, input paths can be formed on both sides of the working channel 211.

[0113] Each channel does not need to work simultaneously at every moment, but the spatial allocation relationship pre-formed within the intervention body 200 allows different functions to cooperate according to the crushing mode, input mode or other working state, and enables remote detection, external media feeding and crushed material near-total output to be implemented respectively through the corresponding channels.

[0114] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A stone crushing system, characterized in that, The lithotripsy system, used in transoral cholangioscopy, includes: The main body of the intervention extends in a long shape along the near and far directions, and a working channel runs through it along the near and far directions; A crushing mechanism includes a crushing element movably disposed along a working channel in a proximal direction, the outer diameter of the crushing element being smaller than the inner diameter of the working channel, so as to define a through-flow output cavity in a proximal direction between the outer wall of the crushing element and the inner wall of the working channel; and, An output mechanism acts on the working channel and is used to discharge material at the distal end of the intervention body towards the proximal end through the working channel; The crushing system has a preset crushing mode, in which the crushing component moves to the far end of the working channel and can be activated to crush the target area; the output mechanism can be activated to discharge the crushed material through the output cavity towards the near end.

2. The stone crushing system as described in claim 1, characterized in that, The crushing component includes a laser generating device, which is movably disposed along the near and far directions. In the crushing mode, the laser generating device can be activated and emit a first laser, the intensity of which is set to the crushable target area.

3. The stone crushing system as described in claim 2, characterized in that, The interventional body is also provided with a detection channel along the proximal direction, and the lithotripsy system also includes a detection component, which is assembled in the detection channel, and at least the detection surface of the detection component is exposed at the distal end of the detection channel; In the fragmentation mode, at least the distal portion of the laser generator extends beyond the working channel to be spaced apart from the detection surface of the detection element.

4. The stone crushing system as described in claim 2, characterized in that, The intensity of the laser emitted by the laser generator can be adjusted; and / or, The stone crushing system is also preset with a special light mode, and in the special light mode, the laser generator can be activated and emit a second laser, and the intensity of the first laser is set to be no less than the intensity of the second laser.

5. The stone crushing system as described in claim 1, characterized in that, The interventional body is also provided with an input channel along the proximal direction. The lithotripsy system also includes an input mechanism that acts on the input channel. The lithotripsy system is also preset with an input mode. In the input mode, the input mechanism is activated so that external media can be delivered to the distal end of the interventional body through the input channel.

6. The stone crushing system as described in claim 5, characterized in that, The lithotripsy system also includes a pressure detection device, which is used to detect at least the pressure value at the distal end of the interventional body; The pressure sensing device is electrically connected to the input mechanism and the output mechanism respectively, so that the pressure value can be obtained according to the parameter values ​​of the input mechanism and the output mechanism.

7. The stone crushing system as described in claim 5, characterized in that, The crushing system also includes a control component, which is electrically connected to the crushing mechanism, the input mechanism, and the output mechanism, respectively. In the crushing mode, the control unit controls the crushing mechanism, the input mechanism and the output mechanism to start respectively.

8. The stone crushing system as described in claim 6, characterized in that, The crushing system also includes a control component, which is electrically connected to the crushing mechanism, the input mechanism, the output mechanism, and the pressure detection device. In the crushing mode, the control component can adjust the parameter values ​​of the input mechanism and / or the output mechanism to maintain the pressure value within a preset pressure range.

9. The stone crushing system as described in claim 7 or 8, characterized in that, The interventional body is also provided with a detection channel along the proximal direction, and the lithotripsy system also includes a detection component, which is assembled in the detection channel, and at least the detection surface of the detection component is exposed at the distal end of the detection channel; The control component is also electrically connected to the detection element, and in the crushing mode, the control component can adjust the parameter values ​​of the input mechanism and / or the output mechanism according to the detection data of the detection element.

10. The stone crushing system as described in claim 9, characterized in that, In the aforementioned fragmentation mode: The control component can increase the parameter value of the output mechanism accordingly when the detector element detects and confirms an increase in output demand; and / or, The control unit can increase the parameter value of the input mechanism accordingly when the detector element detects and confirms an increase in input demand.

11. The stone crushing system as described in claim 6, characterized in that, The interventional body is also provided with a detection channel along the proximal direction, and the lithotripsy system also includes a detection component, which is assembled in the detection channel, and at least the detection surface of the detection component is exposed at the distal end of the detection channel; The working channel and the detection channel are arranged sequentially along one radial direction of the interventional body, and the input channel is arranged in the remaining space of the interventional body; and / or, The input channel is provided with at least two, and each input channel is respectively located on both sides of the working channel along another radial direction of the intervention body; and / or, The inner diameter of the working channel is larger than the inner diameter of the detection channel; and / or, The inner diameter of the working channel is not less than 2.4 mm; and / or, The inner diameter of the detection channel is larger than the inner diameter of the input channel.

12. A transoral cholangioscope, characterized in that, Includes the operating unit and the stone crushing system as described in any one of claims 1 to 11; The proximal end of the intervention body is connected to the operating body, and the operating part of the crushing mechanism and / or the output mechanism is located at the operating body.

Images