A bronchoscope system

Abstract

The disclosure relates to a bronchoscope system, comprising a second endoscope body, a second endoscope handle, a sheath tube and a connecting assembly; further comprising a channel plug and a working channel adapter. Since the channel plug can be deformed by extruding the deformation part to narrow the hole and hold the sheath tube, the locking of the sheath tube is realized, the displacement of the sheath tube after the second endoscope body is pulled out is avoided, the accuracy of subsequent analysis, treatment and other operations is ensured, and a solution is provided for the problems of difficult lung peripheral lesion positioning and treatment.

Description

Technical Field

[0001] This invention belongs to the field of minimally invasive interventional device technology, specifically relating to a bronchoscopic system. Background Technology

[0002] A bronchoscopy is a medical device inserted through the mouth or nose into a patient's lower respiratory tract for observation, biopsy sampling, bacteriological and cytological examination of lesions in the lobes, segments, and subsegments of the lungs. When used with an endoscopic imaging system, it can perform photography, teaching, and dynamic recording. Through connected biopsy sampling accessories and other minimally invasive interventional devices, it can assist in the detection of early lesions and enable minimally invasive internal surgeries.

[0003] Bronchoscopy is widely used in the examination of various lung diseases, including pulmonary nodules, lung tumors, pneumonia, emphysema, atelectasis, and foreign bodies in the lungs. The bronchi are divided into main bronchi, lobar bronchi, segmental bronchi, bronchioles, and terminal bronchioles, ranging from grade 1 to grade 23, with the airways becoming increasingly narrower. As the branches narrow, the cartilage gradually decreases, disappearing completely in the bronchioles and terminal bronchioles. Given that lesions can occur in different locations within the bronchi and the unique structure of the bronchi, the bronchoscopy tool, with its narrow diameter, capable of reaching the periphery of the lung, was developed.

[0004] Bronchoscopes are generally divided into those with and without a working channel. Bronchoscopes without a working channel can only be used for examination. They typically have a narrower diameter, allowing access to even smaller bronchi, making it impossible for minimally invasive interventional instruments to reach lesions. Bronchoscopes with a working channel facilitate the application of minimally invasive interventional instruments to lung lesions under the guidance of the therapeutic endoscope, such as ablation and cutting, biopsy sampling, stenting / occlusion, sputum drainage and irrigation, and other auxiliary procedures.

[0005] Currently, bronchoscopy presents challenges in locating and treating peripheral lung lesions. Summary of the Invention

[0006] To address the aforementioned problems, this disclosure relates to a bronchoscopy system, comprising a second endoscope body, a second endoscope handle, a sheath, and a connecting assembly; the proximal end of the second endoscope body is connected to the second endoscope handle, and a miniature image sensor is disposed at the distal end of the second endoscope body; the connecting assembly is a hollow structure; the second endoscope handle and the sheath are detachably connected via the connecting assembly, and the second endoscope body is detachably inserted within the connecting assembly and the sheath.

[0007] In some embodiments, the bronchoscopic system further includes a channel plug and a working channel adapter; the channel plug is detachably disposed at the opening of the working channel adapter; the channel plug has a channel with a diaphragm having a slit; the sheath can enter the working channel adapter through the channel and the slit.

[0008] In some embodiments, the channel plug includes a channel plug housing, an inner component, and a pressing cap; the channel plug housing has a first opening and a second opening; the inner component is disposed within the channel plug housing and includes a compression deformation component; the pressing cap has a cap body and a locking buckle connected to the cap body; the cap body is inserted through the first opening and connected to a first end of the inner component, and the locking buckle is located outside the channel plug housing; the outer surface of the channel plug housing is provided with a locking protrusion; the inner component is detachably connected to an opening of the working channel adapter extending into the second opening; the channel passes through the inner component and the cap body; The channel plug has an unlocked form and a locked form, and the first end of the inner component is respectively located in the unlocked position and the locked position: when it is in the unlocked position, the pressure applied by the pressing cap to the extrusion deformation component is less than the pressure when it is in the locked position, so that the diameter of the section of the channel in the extrusion deformation component is greater than the diameter when it is in the locked position. In the locked state, the locking buckle engages with the locking protrusion, so that the first end of the inner component is held in the locked position, causing the extrusion deformation component to deform, thereby narrowing the diameter of the section of the channel located in the extrusion deformation component to lock the sheath passing through that section.

[0009] In some embodiments, the outer surface of the channel plug housing is further provided with an unlocking protrusion; the distance from the unlocking protrusion to the first opening of the channel plug housing is less than the distance from the locking protrusion to the first opening of the channel plug housing; in the unlocked state, the locking buckle is released from the locking protrusion, but engaged with the unlocking protrusion, so that the first end of the inner component remains in the unlocked position, causing the extrusion deformation component to recover, thereby restoring the aperture size of the section of the channel located in the extrusion deformation component to unlock the sheath passing through that section.

[0010] In some embodiments, the press cap also has a tail; the tail is configured to connect to the connection between the locking buckle and the cap body, and by prying the tail, the locking buckle is lifted by lever principle (e.g., the connection between the locking buckle and the cap body acts as a fulcrum), thereby releasing the fastening.

[0011] In some implementations, the extrusion deformation component is provided with an extrusion deformation groove.

[0012] In some embodiments, the internal component further includes a pressing pad; the extrusion deformation component is disposed on the pressing pad; the first end of the internal component is the end of the extrusion deformation component away from the pressing pad; the end of the pressing pad away from the extrusion deformation component is connected to the opening of the working channel adapter; the section of the channel located within the pressing pad includes a first section, a second section, and a third section connected in sequence; the aperture of the first section and the third section is larger than the outer diameter of the sheath, the aperture of the second section is smaller than the aperture of the first section and the third section and the outer diameter of the sheath, the cross-sectional shape of the second section is the same as the cross-sectional shape of the outer contour of the sheath, and the channel wall surrounding the second section is elastic, so that when the sheath passes through the second section, the channel wall surrounding the second section is sealed and fitted to the sheath; The inner surface of the channel plug housing has a first protrusion and a second protrusion; the inner diameter of the channel plug housing at the first protrusion and the second protrusion is smaller than the maximum outer diameter of the pressing pad, ensuring that the pressing pad is locked inside the channel plug housing; The channel plug housing also has a self-destruct unit; the self-destruct unit includes a pull handle, a first groove and a second groove; the first groove and the second groove are arranged axially parallel, and their axial starting point and ending point are the first boss and the second opening, respectively; the pull handle is an outward extension of the channel plug housing and is located between the first groove and the second groove, and is configured to: tear the pull handle to cause the channel plug housing to break from the first groove and the second groove; The pressing cap also has a connecting part; the connecting part connects the cap body to the outer surface of the channel plug shell; the extrusion deformation component is provided with a plurality of axially arranged extrusion deformation grooves; the extrusion deformation grooves are annular.

[0013] In some implementations, the working channel adapter is adapted to the working channels of one or more of the following instruments: bronchoscope, endotracheal tube, and endotracheal tube mouthpiece.

[0014] In some embodiments, the bronchoscopy system further includes a first endoscope body and a first endoscope handle; the proximal end of the first endoscope body is connected to the first endoscope handle, and a miniature image sensor is disposed at the distal end of the first endoscope body; the working channel adapter is connected to the first endoscope handle, or is a component of the first endoscope handle; the working channel of the first endoscope body communicates with the working channel adapter, so that the sheath can enter the working channel of the first endoscope body through the working channel adapter.

[0015] In some embodiments, the connecting assembly includes a sheath retainer and a sheath connecting tube assembly; a first end of the sheath retainer is connected to the second endoscope handle; and a sealing ring is provided on the outer periphery of the sheath connecting tube assembly. The connecting assembly is configured such that: the first end of the sheath connecting tube assembly is inserted into the sheath fixing seat from the second end of the sheath fixing seat; the sealing ring is tightly attached to the inner wall of the sheath fixing seat; and the connection between the sheath connecting tube assembly and the sheath fixing seat is controlled by fixing and locking the sheath and locking the cap. The sheath is connected to the sheath connecting tube assembly and extends from the second end of the sheath connecting tube assembly.

[0016] In some embodiments, the sheath connection assembly includes a sheath connection tube, a sheath connection nut, and a sheath connector; the sheath connection tube and the sheath connector are detachably connected via the sheath connection nut; a sealing ring is disposed on the outer periphery of the sheath connection tube; and the insertion depth of the sheath connection tube into the sheath fixing seat is adjustable.

[0017] In some embodiments, the sheath holder has a three-way structure, with its third end being an auxiliary injection / absorption connector for connecting to liquid, gas, or a combination of liquid and gas.

[0018] In some embodiments, the bronchoscopic system further includes minimally invasive interventional instruments, an endoscopic video imaging system, a cold light source system, and a negative pressure suction / air / water delivery system; the minimally invasive interventional instruments are detachably inserted into the connecting assembly and the sheath. The endoscopic video imaging system, the cold light source system, and the negative pressure suction / air / water delivery system are prior art.

[0019] In some embodiments, the outer diameter of the second endoscope body is 0.8mm to 3.0mm, preferably 1.6mm to 2.0mm; the inner diameter of the sheath is 0.2mm to 0.8mm larger than the outer diameter of the second endoscope body, preferably 0.3mm to 0.6mm; and the wall thickness of the sheath is 0.1mm to 0.3mm, preferably 0.15mm.

[0020] This disclosure offers the following advantages: The bronchoscopy system provided by this disclosure features an adjustable insertion depth of the sheath connector into the sheath fixation seat. Therefore, the positional relationship between the distal end of the sheath and the distal end of the second endoscope body can be slightly adjusted by regulating the insertion depth, for example, making them flush. This allows for direct access to the lesion when inserting minimally invasive interventional instruments or introducing fluids after withdrawing the second endoscope body, preventing displacement due to misalignment of the distal end of the sheath with the distal end of the second endoscope body during examination. This effectively overcomes the difficulties in locating and treating peripheral lung lesions encountered during application. Furthermore, the channel plug can narrow the passage by compressing the deformable component, thus gripping the sheath and locking it in place. This prevents displacement of the sheath after withdrawal of the second endoscope body, ensuring the accuracy of subsequent analysis and treatment operations, and providing a solution to the problems of difficult location and treatment of peripheral lung lesions.

[0021] Furthermore, the slits on the diaphragm are closed when no object such as a sheath passes through, preventing airway fluid from being ejected before sheath insertion. The aperture of the second section of the compression pad is smaller than the outer diameter of the sheath, and the cross-sectional shape, along with the elasticity of the channel wall, ensures that the airway seals the outer periphery of the sheath when the sheath passes through, preventing airway fluid from being ejected. The self-destruct unit helps ensure that the channel plug can only be used once, effectively avoiding the possibility of cross-infection caused by the channel plug.

[0022] Furthermore, the bronchoscopy system of this disclosure may include a first endoscope (including a first endoscope body, a first endoscope handle, and other supporting components of the first endoscope) and a second endoscope (including a second endoscope body, a second endoscope handle, and other supporting components of the second endoscope), or may include only the second endoscope and exclude the first endoscope. The second endoscope may be used in conjunction with the first endoscope, or it may be used in conjunction with the working channels of other instruments, such as endotracheal tubes and endotracheal tube end-hole pads. It may also be connected to fluids (including but not limited to one or more of liquids and gases) that need to be introduced into the lesion via an auxiliary infusion / aspiration connector. Therefore, the bronchoscopy system of this disclosure is suitable for a variety of application scenarios. In some application scenarios, the first endoscope may be a therapeutic endoscope, and the second endoscope may be an examination endoscope. In other application scenarios, the second endoscope may also be a therapeutic endoscope, with its working channel designed for the passage of minimally invasive instruments with a smaller outer diameter, including but not limited to examination endoscopes.

[0023] The above description is merely an overview of the technical solutions of the embodiments disclosed herein. Since the bronchoscope is a mature medical device with a wide variety of peripheral supporting equipment and accessories, any parts not described in detail in this disclosure can be understood as prior art. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the invention will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is the bronchoscopic system of Example 1.

[0026] Figure 2 This is a three-dimensional schematic diagram of the structure of the bronchoscope system of Example 1 after the connecting components, the channel plug are assembled with the sheath and the second endoscope handle.

[0027] Figure 3 This is an exploded view of the connecting assembly, sheath, second endoscope body, and second endoscope handle of Embodiment 1.

[0028] Figure 4 The diagram shows a front view (left) and a cross-sectional view (right) taken along the BB axis of the front view of the second endoscope of Embodiment 1, which is assembled with a sheath via a connecting assembly (the sheath assembly is not yet complete).

[0029] Figure 5 This is a partial view of the assembled sheath. The left side is the front view, and the right side is the cross-sectional view.

[0030] Figure 6 yes Figure 5 A partial view.

[0031] Figure 7 This is a schematic perspective view of the channel plug in Example 1.

[0032] Figure 8 This is a top view of the structure of the channel plug in Example 1.

[0033] Figure 9 This is a schematic cross-sectional view of the channel plug in Example 1.

[0034] Figure 10 yes Figure 9 A schematic cross-sectional view of the channel plug after it has been rotated 90°.

[0035] Figure 11 This is an exploded view of the channel plug of Example 1. The left side is a perspective view, and the right side is a cross-sectional view taken along the AA axis from the left image.

[0036] Figure label: 1-Second endoscope handle, 11-Rotary knob, 13-First tubing, 14-Suction connector, 15-Suction switch 2-Connecting assembly, 21-Sheath fixing seat, 22-Auxiliary injection / suction connector, 23-Sheath fixing cap, 24-Sheath connecting nut, 25-Sheath connector, 26-Sheath connecting tube, 27-Sealing ring. 3-Sheath, 4-Channel plug, 400-Channel, 401-Second section, 402-First section, 403-Third section, 41-Press cap, 411-Tail, 412-Locking buckle, 413-Cap body, 414-Connection, 415-Connection part, 416-Snap-on protrusion, 42-Channel plug shell, 420-Third boss, 421-Unlocking protrusion, 422-Locking protrusion, 423-First groove, 424-Second groove, 425-Pull handle, 426-First boss, 427-Second boss, 428-First opening, 429-Second opening, 431-Diaphragm, 432-Slit, 433-Extrusion deformation groove, 434-Extrusion deformation component, 435-Pressure pad 5-Second endoscope body, 6-Working channel adapter, 600-Connector channel, 601-Outward-facing boss. 7-Third Channel 8-First endoscope handle, 9-First endoscope body. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0040] If an element is referred to as being "fixed to" or "set on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element present. Where applicable, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this disclosure are for illustrative purposes only and do not represent the only possible implementation.

[0041] In this document, the singular forms “an,” “a,” and “the” include their plural forms, unless the context otherwise requires.

[0042] Example 1 Figure 1 The bronchoscopic system of this embodiment is shown. The bronchoscopic system includes a first endoscope, a second endoscope, and a sheath 3 (…). Figure 3 ), connecting component 2, channel plug 4 ( Figure 2 ) and working channel adapter 6 ( Figure 7 and Figure 9 The first endoscope includes a first endoscope body 9 and a first endoscope handle 8; the second endoscope includes a second endoscope body 5 and a second endoscope handle 1.

[0043] The proximal end of the second endoscope body 5 is connected to the second endoscope handle 1, and a miniature image sensor is provided at the distal end of the second endoscope body 5. The connecting component 2 is a hollow structure. The second endoscope handle 1 and the sheath 3 are detachably connected via the connecting component 2, and the second endoscope body 5 is detachably inserted into the connecting component 2 and the sheath 3. The proximal end of the first endoscope body 9 is connected to the first endoscope handle 8, and a miniature image sensor is provided at the distal end of the first endoscope body 9. The working channel adapter 6 is a component of the first endoscope handle 8. The working channel of the first endoscope body 9 and the connector channel 600 in the working channel adapter 6 ( Figure 9 The sheath 3 is connected, allowing it to enter the working channel of the first endoscope body 9 through the working channel adapter 6.

[0044] The channel plug 4 is detachably disposed at the opening of the working channel adapter 6. The channel plug 4 has a channel 400 ( Figure 7 The channel 400 has a diaphragm 431, on which a notch 432 is provided ( Figure 8 and Figure 9 ); the sheath 3 can enter the working channel adapter 6 through the channel 400 and the cut 432.

[0045] Channel plug 4 includes channel plug housing 42 ( Figure 11 ), internal components and a pressing cap 41. The channel plug housing 42 has a first opening 428 and a second opening 429 ( Figure 9 The internal components are housed within the channel plug housing 42, including a compression deformation component 434 and a pressing pad 435. The pressing cap 41 has a cap body 413, a locking buckle 412, a tail 411, and a connecting portion 415. Figure 10 The locking buckle 412 is connected to the cap body 413. The connecting part 415 connects the cap body 413 to the outer surface of the channel plug housing 42, ensuring that the pressing cap 41 is always matched with the channel plug housing 42.

[0046] The cap body 413 is inserted through the first opening 428 and connected to the first end of the inner component, with a locking buckle 412 located outside the channel plug housing 42. The inner component is detachably connected to the opening of the working channel adapter 6, which extends into the second opening 429. The channel 400 passes through the inner component and the cap body 413.

[0047] The channel plug 4 has an unlocked state and a locked state, corresponding to the first end of the internal component being in the unlocked and locked positions, respectively. When in the unlocked position, the pressure applied by the pressing cap 41 to the compression deformation component 434 is less than the pressure when in the locked position, causing the diameter of the section of the channel 400 within the compression deformation component 434 to be larger than the diameter when in the locked position. Specifically, the outer surface of the channel plug housing 42 is provided with a locking protrusion 422 and an unlocking protrusion 421. The distance from the unlocking protrusion 421 to the first opening 428 of the channel plug housing 42 is less than the distance from the locking protrusion 422 to the first opening 428 of the channel plug housing 42. The locking buckle 412 has a plurality of engaging protrusions 416 (three in this embodiment) on the side facing the channel plug housing 42.

[0048] In the locked state, the locking buckle 412 engages with the locking protrusion 422 (i.e., the engaging protrusion 416 engages with the locking protrusion 422), keeping the first end of the inner component in the locked position. This causes the compression deformation component 434 to deform, thereby narrowing the diameter of the section of the channel 400 located within the compression deformation component 434 to lock the sheath 3 passing through that section. Since there are multiple engaging protrusions 416 in this embodiment, and in order to lock more securely in the locked state, other engaging protrusions 416 that are not engaged with the locking protrusion 422 (more precisely, engaging protrusions 416 that are closer to the top of the cap body 413 than those engaging with the locking protrusion 422) can be designed to remain engaged with the unlocking protrusion 421 in the locked state. The extrusion deformation component 434 is provided with multiple axially arranged annular extrusion deformation grooves 433, which makes the extrusion deformation component 434, which is made of elastic material, more easily deformed by extrusion.

[0049] In the unlocked state, the locking buckle 412 is disengaged from the locking protrusion 422, but engages with the unlocking protrusion 421 (i.e., the engaging protrusion 416 is disengaged from the locking protrusion 422, but engages with the unlocking protrusion 421), so that the first end of the inner component remains in the unlocked position, causing the compression deformation component 434 to recover, thereby restoring the aperture size of the section of the channel 400 located in the compression deformation component 434 to unlock the sheath 3 passing through that section.

[0050] The tail 411 is configured to connect with the locking buckle 412 and the cap body 413 at the connection point 414. By prying the tail 411, the locking buckle 412 is lifted by lever principle, thereby releasing the fastening (the fastening is selected from one or more of the fastening of the fastening protrusion 416 and the locking protrusion 422, and the fastening of the fastening protrusion 416 and the unlocking protrusion 421).

[0051] The extrusion deformation component 434 is disposed on the pressing pad 435. The first end of the inner component is the end of the extrusion deformation component 434 away from the pressing pad 435; the end of the pressing pad 435 away from the extrusion deformation component 434 (the second end of the inner component) is connected to the opening of the working channel adapter 6. The section of the channel 400 located within the pressing pad 435 includes a first section 402, a second section 401, and a third section 403 connected in sequence. Figure 11 The apertures of the first section 402 and the third section 403 are larger than the outer diameter of the sheath 3. The aperture of the second section 401 is smaller than the apertures of the first section 402 and the third section 403 and the outer diameter of the sheath 3. The cross-sectional shape of the second section 401 is the same as the cross-sectional shape of the outer contour of the sheath 3. The channel wall surrounding the second section 401 is elastic, so that when the sheath 3 passes through the second section 401, the channel wall surrounding the second section 401 is sealed and fitted with the sheath 3.

[0052] The inner surface of the channel plug housing 42 has a first boss 426, a second boss 427, and a third boss 420. The inner diameter of the channel plug housing 42 at the first boss 426 and the second boss 427 is smaller than the maximum outer diameter of the pressing pad 435, ensuring that the pressing pad 435 is engaged within the channel plug housing 42. Figure 11 The opening of the working channel adapter 6 is turned outward to form an outward-facing boss 601. When the channel plug 4 is installed in the opening of the working channel adapter 6, the third boss 420 abuts against the lower edge of the outward-facing boss 601. Figure 10 This makes the channel plug 4 and the working channel adapter 6 fit together more tightly.

[0053] The channel plug housing 42 also has a self-destruct unit. The self-destruct unit includes a pull handle 425, a first groove 423, and a second groove 424. The first groove 423 and the second groove 424 are arranged axially parallel, with their axial starting points and ending points being a first boss 426 and a second opening 429, respectively. The pull handle 425 is an outward extension of the channel plug housing 42 and is located between the first groove 423 and the second groove 424. It is configured such that tearing the pull handle 425 causes the channel plug housing 42 to break from the first groove 423 and the second groove 424.

[0054] The connecting assembly 2 includes a sheath fixing seat 21 and a sheath connecting tube assembly. The first end of the sheath fixing seat 21 is connected to the second endoscope handle 1. The second endoscope handle 1 is provided with a rotary knob 11 (prior art) for controlling the direction of the bending angle of the second endoscope body 5. The second endoscope handle 1 is also provided with a first tube 13, a suction connector 14, and a suction switch 15. Figure 4 The suction connector 14 is used to connect to devices for negative pressure suction, air inflator, and / or liquid administration for bronchial treatment and / or detection. The suction connector 14 is connected to the first conduit 13, which is controlled by a suction switch 15 to close and open the passage and to what extent it is open. Gases and / or liquids can pass through the first conduit 13 into the gap between the second endoscope body 5 and the sheath 3, reaching the lesion. The working channel of the first endoscope body 9 is named the first channel; the channel within the sheath 3 is named the second channel; the gap between the second endoscope body 5 and the sheath 3 forms the third channel 7. Figure 6 When performing certain tasks in the bronchial system, a sheath 3 is installed in the first channel, that is, the second channel is inside the first channel. The second endoscope body 5 is inserted into the second channel to form a third channel 7, ultimately forming a pipe structure similar to nested dolls.

[0055] The sheath tube connection assembly includes a sheath tube connection tube 26, a sheath tube connection nut 24, and a sheath tube connector 25. Figure 3 The sheath connecting tube 26 and the sheath connector 25 are detachably connected by a sheath connecting nut 24. A sealing ring 27 is provided on the outer periphery of the sheath connecting tube 26.

[0056] Connection component 2 ( Figure 5 The configuration is as follows: the first end of the sheath connecting tube assembly (i.e., the end of the sheath connecting tube 26 away from the sheath joint 25) is inserted into the sheath fixing seat 21 from the second end of the sheath fixing seat 21. The sealing ring 27 is tightly attached to the inner wall of the sheath fixing seat 21. The connection between the sheath connecting tube assembly and the sheath fixing seat 21 is locked or unlocked by controlling the sheath fixing cap 23. The depth of insertion of the sheath connecting tube 26 into the sheath fixing seat 21 is adjustable. In this embodiment, the sheath fixing cap 23 is actually a nut, which locks or unlocks the connection between the sheath connecting tube assembly and the sheath fixing seat 21 through a threaded connection.

[0057] The sheath 3 is connected to the sheath connecting tube assembly and extends from the second end of the sheath connecting tube assembly (i.e., the end of the sheath joint 25 away from the sheath connecting tube 26).

[0058] The sheath fixation seat 21 has a three-way structure, with its third end being an auxiliary injection / aspiration connector 22 for connecting liquids, gases, or a combination of liquids and gases. When the second endoscope body 5 is withdrawn from the sheath 3, gas and / or liquid can be delivered to the lesion through the auxiliary injection / aspiration connector 22 via the sheath 3.

[0059] The bronchoscopic system of this embodiment also includes minimally invasive interventional instruments, an endoscopic video imaging system, a cold light source system, and a negative pressure suction / air / water delivery system. The minimally invasive interventional instruments are detachably inserted into the connecting assembly 2 and the sheath 3. The endoscopic video imaging system, the cold light source system, and the negative pressure suction / air / water delivery system are existing technologies.

[0060] The outer diameter of the second endoscope body 5 is 2.0 mm. The inner diameter of the sheath 3 is 0.3 mm larger than the outer diameter of the second endoscope body 5; the wall thickness of the sheath 3 is 0.175 mm.

[0061] Example 2 The bronchoscopic system of this embodiment does not include a channel plug, a working channel adapter, a first endoscope body, and a first endoscope handle. Everything else is the same as in Embodiment 1.

[0062] Example 3 In this embodiment, the bronchoscope system does not include a first endoscope body and a first endoscope handle. A working channel adapter is fitted to an endotracheal tube. The working channel adapter connects to the endotracheal tube. Everything else is the same as in Embodiment 1.

[0063] Example 4 In this embodiment, the working channel adapter is adapted to the first endoscope of the bronchus and the mouthpiece for endotracheal intubation. The first endoscope of the bronchus includes a first endoscope body and a first endoscope handle. During operation, the working channel adapter is connected to the mouthpiece for endotracheal intubation or to the first endoscope handle. Everything else is the same as in Embodiment 1.

[0064] Example 5 In this embodiment, a locking protrusion is provided on the side of the locking buckle facing the channel plug housing, and the rest is the same as in embodiment 1.

[0065] Example 6 In this embodiment, the outer surface of the channel plug housing is provided with locking protrusions, but no additional unlocking protrusions are provided; otherwise, it is the same as in Embodiment 1.

[0066] Some embodiments of this disclosure are fully applicable or selectively applicable to the following surgical scenarios. The applicable scenarios for the bronchoscopic system of this disclosure include, but are not limited to, the following scenarios.

[0067] Surgical Scenario A: 1. Under general anesthesia, the patient undergoes endotracheal intubation, followed by clearing mucus from the lungs using the first endoscope; 2. The lengths of the sheath, ultrasound probe, biopsy forceps (outer diameter: φ1.8mm or φ2.0mm), and cell brush (outer diameter: φ1.8mm or φ2.0mm) are compared and marked; 3. The first endoscope advances along the preoperative navigation route until it can no longer penetrate; 4. The second endoscope and sheath are guided to the lesion location via the working channel of the first endoscope body, following the preoperative navigation; 5. The sheath is secured using a channel plug; 6. The second endoscope is withdrawn while the sheath remains stationary; 7. The ultrasound probe, marked with its length, is inserted into the sheath and positioned to reconfirm the lesion; 8. The ultrasound probe is withdrawn; 9. The biopsy forceps or cell brush, marked with its length, is inserted into the sheath and positioned; 10. Biopsy sampling is performed.

[0068] Surgical Scenario B: 1. Under general anesthesia, the patient first undergoes endotracheal intubation, followed by clearing mucus from the lungs using the first endoscope; 2. Compare and mark the lengths of the sheath, ultrasound probe, biopsy forceps (outer diameter: φ1.8mm or φ2.0mm), and cell brush (outer diameter: φ1.8mm or φ2.0mm); 3. The first endoscope establishes an upward channel to the upper lobe of the lung at approximately a 180-degree angle, providing a support channel for the second endoscope at approximately a 180-degree angle; 4. The second endoscope and sheath are guided to the lesion in the upper lobe of the lung via the working channel of the first endoscope, according to preoperative navigation; 5. The sheath is fixed by the channel plug; 6. Keeping the sheath stationary, the second endoscope is withdrawn; 7. The ultrasound probe, marked with its length, is inserted into the sheath and positioned to confirm the lesion; 8. The ultrasound probe is withdrawn; 9. The biopsy forceps or cell brush, marked with its length, is inserted into the sheath and positioned; 10. Biopsy sampling is performed.

[0069] Surgical Scenario c: 1. Under general anesthesia, the patient first undergoes endotracheal intubation, followed by clearing mucus from the lungs using the first endoscope; 2. Compare and mark the lengths of the sheath, ultrasound probe, biopsy forceps (outer diameter: φ1.8mm or φ2.0mm), and cell brush (outer diameter: φ1.8mm or φ2.0mm); 3. The second endoscope and sheath are directly inserted through the endotracheal intubation, and the sheath is guided to the lesion location according to preoperative navigation; 4. The sheath is fixed using a channel plug; 5. Keeping the sheath stationary, the second endoscope is withdrawn; 6. The ultrasound probe, marked with its length, is inserted into the sheath and reaches the designated position to reconfirm the lesion; 7. The ultrasound probe is withdrawn; 8. The biopsy forceps or cell brush, marked with its length, is inserted into the sheath and reaches the designated position; 9. Biopsy sampling is performed.

[0070] Surgical Scenario d: 1. Under general anesthesia, the patient undergoes endotracheal intubation, followed by clearing mucus from the lungs using the first endoscope; 2. The lengths of the sheath, ultrasound probe, biopsy forceps, and flexible ablation needle are compared and marked; 3. The first endoscope advances along the pre-operative navigation route until it can no longer penetrate; 4. The second endoscope and sheath are guided to the lesion location via the working channel of the first endoscope body, following the pre-operative navigation; 5. The sheath is secured using a channel plug; 6. The second endoscope is withdrawn while the sheath remains stationary; 7. The ultrasound probe, marked with its length, is inserted into the sheath and positioned to reconfirm the lesion; 8. The ultrasound probe is withdrawn; 9. The biopsy forceps, marked with its length, is inserted into the sheath and positioned; 10. A biopsy is performed; 11. The biopsy forceps are withdrawn; 12. The flexible ablation needle, marked with its length, is inserted into the sheath and positioned; 13. Ablation treatment is performed.

[0071] Surgical Scenario e: 1. Under general anesthesia, the patient first undergoes endotracheal intubation, followed by clearing mucus from the lungs using the first endoscope; 2. The lengths of the sheath, ultrasound probe, biopsy forceps, and flexible ablation needle are compared and marked; 3. The first endoscope establishes an upward channel (approximately 180 degrees) through the upper lobe of the lung, providing a support channel (approximately 180 degrees) for the second endoscope; 4. The second endoscope and sheath pass through the working channel of the first endoscope body, guided by preoperative navigation... 5. Guide the sheath to the lesion in the upper lobe of the lung; 6. Fix the sheath through the channel plug; 7. Keep the sheath stationary and withdraw the second endoscope; 8. Insert the marked-length ultrasound probe into the sheath and reach the designated position to reconfirm the lesion; 9. Withdraw the ultrasound probe; 10. Insert the marked-length biopsy forceps into the sheath and reach the designated position; 11. Perform biopsy sampling; 12. Withdraw the biopsy forceps; 13. Insert the marked-length flexible ablation needle into the sheath and reach the designated position; 14. Perform ablation treatment.

[0072] Surgical Scenario f: 1. Under general anesthesia, the patient first undergoes endotracheal intubation, and then the first endoscope is used to clear mucus from the lungs; 2. The lengths of the sheath, ultrasound probe, and flexible ablation needle are compared and marked; 3. The second endoscope and sheath are directly inserted through the endotracheal intubation, and the sheath is guided to the lesion location according to preoperative navigation; 4. The sheath is fixed by a channel plug; 5. Keeping the sheath stationary, the second endoscope is withdrawn; 6. The ultrasound probe of marked length is inserted into the sheath and reaches the designated position to reconfirm the lesion; 7. The ultrasound probe is withdrawn; 8. The biopsy forceps of marked length are inserted into the sheath and reach the designated position; 9. Biopsy sampling is performed; 10. The biopsy forceps are withdrawn; 11. The flexible ablation needle of marked length is inserted into the sheath and reaches the designated position; 12. Ablation treatment is performed.

[0073] The foregoing detailed several specific embodiments and application scenarios of this disclosure, representing only a very small part of the embodiments disclosed. This disclosure cannot list all embodiments, nor does it completely list all application scenarios. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A bronchoscopic system comprising a second endoscope body, a second endoscope handle, a sheath, and a connecting assembly; the proximal end of the second endoscope body is connected to the second endoscope handle, and a miniature image sensor is disposed at the distal end of the second endoscope body; the connecting assembly is a hollow structure; the second endoscope handle and the sheath are detachably connected via the connecting assembly, and the second endoscope body is detachably inserted within the connecting assembly and the sheath such that the gap between the second endoscope body and the sheath forms a third channel.

2. The bronchoscopic system according to claim 1 further includes a channel plug and a working channel adapter; the channel plug is detachably disposed at the opening of the working channel adapter; the channel plug has a channel, the channel has a diaphragm, and the diaphragm has a slit; the sheath can enter the working channel adapter through the channel and the slit.

3. The bronchoscopic system according to claim 2, wherein the channel plug comprises a channel plug housing, an inner component, and a pressing cap; the channel plug housing has a first opening and a second opening; the inner component is disposed within the channel plug housing and includes a compression deformation component; the pressing cap has a cap body and a locking buckle connected to the cap body; The cap body is inserted into the first opening and connected to the first end of the inner component; the locking buckle is located outside the channel plug housing; the outer surface of the channel plug housing is provided with a locking protrusion; the inner component is detachably connected to the opening of the working channel adapter that extends into the second opening; the channel passes through the inner component and the cap body; The channel plug has an unlocked form and a locked form, and the first end of the inner component is respectively located in the unlocked position and the locked position: when it is in the unlocked position, the pressure applied by the pressing cap to the extrusion deformation component is less than the pressure when it is in the locked position, so that the diameter of the section of the channel in the extrusion deformation component is greater than the diameter when it is in the locked position. In the locked state, the locking buckle engages with the locking protrusion, so that the first end of the inner component is held in the locked position, causing the extrusion deformation component to deform, thereby narrowing the diameter of the section of the channel located in the extrusion deformation component to lock the sheath passing through that section.

4. The bronchoscope system according to claim 3, wherein the outer surface of the channel plug housing is further provided with an unlocking protrusion; the distance from the unlocking protrusion to the first opening of the channel plug housing is less than the distance from the locking protrusion to the first opening of the channel plug housing; in the unlocked state, the locking buckle is released from the locking protrusion but engaged with the unlocking protrusion, so that the first end of the internal component remains in the unlocked position, causing the compression deformation component to recover, thereby restoring the aperture size of the section of the channel located in the compression deformation component to unlock the sheath passing through that section.

5. The bronchoscope system according to claim 3, wherein the pressing cap further has a tail portion; the tail portion is configured to connect with the locking buckle and the cap body, and by prying the tail portion, the locking buckle is lifted by lever principle, thereby releasing the fastening.

6. The bronchoscope system according to claim 3, wherein the compression deformation component is provided with a compression deformation groove.

7. The bronchoscopic system according to claim 3, wherein the internal component further includes a pressure pad; the extrusion deformation component is disposed on the pressure pad; the first end of the internal component is the end of the extrusion deformation component away from the pressure pad; the end of the pressure pad away from the extrusion deformation component is connected to the opening of the working channel adapter; the section of the channel located within the pressure pad includes a first section, a second section, and a third section connected in sequence; the aperture of the first section and the third section is larger than the outer diameter of the sheath, the aperture of the second section is smaller than the aperture of the first section and the third section and the outer diameter of the sheath, the cross-sectional shape of the second section is the same as the cross-sectional shape of the outer contour of the sheath, and the channel wall surrounding the second section is elastic, such that when the sheath passes through the second section, the channel wall surrounding the second section is sealed and fitted with the sheath; The inner surface of the channel plug housing has a first protrusion and a second protrusion; the inner diameter of the channel plug housing at the first protrusion and the second protrusion is smaller than the maximum outer diameter of the pressing pad, ensuring that the pressing pad is locked inside the channel plug housing; The channel plug housing also has a self-destruct unit; the self-destruct unit includes a pull handle, a first groove and a second groove; the first groove and the second groove are arranged axially parallel, and their axial starting point and ending point are the first boss and the second opening, respectively; the pull handle is an outward extension of the channel plug housing and is located between the first groove and the second groove, and is configured to: tear the pull handle to cause the channel plug housing to break from the first groove and the second groove; The pressing cap also has a connecting part; the connecting part connects the cap body to the outer surface of the channel plug shell; the extrusion deformation component is provided with a plurality of axially arranged extrusion deformation grooves; the extrusion deformation grooves are annular.

8. The bronchoscope system according to claim 2, wherein the working channel adapter is adapted to the working channel of one or more of the following instruments: bronchoscope, endotracheal tube, and endotracheal tube mouthpiece.

9. The bronchoscopic system according to claim 2 further includes a first endoscope body and a first endoscope handle; the proximal end of the first endoscope body is connected to the first endoscope handle, and a miniature image sensor is provided at the distal end of the first endoscope body; the working channel adapter is connected to the first endoscope handle, or is a component of the first endoscope handle; the working channel of the first endoscope body communicates with the working channel adapter, so that the sheath can enter the working channel of the first endoscope body through the working channel adapter.

10. The bronchoscopic system according to claim 1, wherein the connecting assembly includes a sheath fixation seat and a sheath connecting tube assembly; a first end of the sheath fixation seat is connected to the second endoscope handle; and a sealing ring is provided on the outer periphery of the sheath connecting tube assembly; The connecting assembly is configured such that: the first end of the sheath connecting tube assembly is inserted into the sheath fixing seat from the second end of the sheath fixing seat; the sealing ring is tightly attached to the inner wall of the sheath fixing seat; and the connection between the sheath connecting tube assembly and the sheath fixing seat is controlled by fixing and locking the sheath and locking the cap. The sheath is connected to the sheath connecting tube assembly and extends from the second end of the sheath connecting tube assembly.

11. The bronchoscopic system according to claim 10, wherein the sheath connection tube assembly includes a sheath connection tube, a sheath connection nut, and a sheath connector; the sheath connection tube and the sheath connector are detachably connected via the sheath connection nut; the sealing ring is disposed on the outer periphery of the sheath connection tube; and the depth to which the sheath connection tube is inserted into the sheath fixing seat is adjustable.

12. The bronchoscope system according to claim 10, wherein the sheath fixation seat is a three-way structure, and its third end is an auxiliary injection / aspiration connector for connecting liquid, gas, or liquid and gas.

13. The bronchoscopic system according to claim 1 further includes a minimally invasive interventional device, an endoscopic video imaging system, a cold light source system, and a negative pressure suction / air and water delivery system; the minimally invasive interventional device is detachably inserted into the connecting assembly and the sheath.

14. The bronchoscopic system according to any one of claims 1 to 13, wherein the outer diameter of the second endoscope body is 0.8 mm to 3.0 mm, preferably 1.6 mm to 2.0 mm; the inner diameter of the sheath is 0.2 mm to 0.8 mm larger than the outer diameter of the second endoscope body, preferably 0.3 mm to 0.6 mm; and the wall thickness of the sheath is 0.1 mm to 0.3 mm, preferably 0.15 mm.

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