A guide device for a bronchoscope and an interventional device

Abstract

The application discloses a guide device for a bronchoscope and an interventional device, and the guide device comprises a first end head, a folding telescopic support and a second end head which are sequentially butted in a straight line direction, the folding telescopic support comprises a plurality of folding units which are sequentially connected in the direction from the first end head to the second end head, each folding unit comprises a first folding plate, a second folding plate and a through-hole rotating shaft which are cross arranged, the middle part of the first folding plate is hinged to the middle part of the second folding plate through a rotating shaft part, the middle part of the first folding plate is formed with an assembly hole, and the middle part of the second folding plate is formed with an avoiding hole at the position opposite to the assembly hole, a first channel is formed on the first end head, a second channel is formed on the through-hole rotating shaft, and a third channel is formed on the second end head, the first channel, the second channel and the third channel are coaxially arranged, the guide device provides a support point for the exposed part of the bronchoscope and keeps the exposed part arranged in a straight line direction, and the bronchoscope is facilitated to be accurately pushed in a specified direction.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a guide device and interventional equipment for a bronchoscope. Background Technology

[0002] Currently, with the development of medical technology, the use of interventional medical devices is becoming increasingly widespread. Bronchoscopy, as a type of interventional device, is suitable for observing lesions in the lobes, segments, and subsegments of the lungs, for biopsy sampling, and for bacteriological and cytological examinations. When using bronchoscopy, a slender bronchoscope is inserted into the patient's lower respiratory tract through the mouth or nose, allowing direct observation of the trachea and the condition of each lobe and segment of the bronchi, improving exploration efficiency and accuracy. For example, Chinese patent application number 201810380865.3 discloses a bronchoscope insertion cannula. Its specification describes a bronchoscope insertion cannula comprising a separate cannula and a pleural sac. The cannula is made of conventional catheter material, and its end is equipped with a support bar to overcome resistance and prevent bending, facilitating the insertion and removal of the bronchoscope.

[0003] However, although existing technologies have incorporated support bars on the bronchoscope cannula to reduce the problem of cavities that cannot be accessed, the bronchoscope itself is flexible, and the exposed portion still lacks rigidity during intervention, making it difficult to control the bronchoscope to advance in a straight line.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a guide device and interventional device for bronchoscope, which aims to solve the problem that the guide device is difficult to control the accurate advancement of the bronchoscope in a straight line during the interventional process.

[0006] The technical solution of the present invention is as follows:

[0007] A guide device for a bronchoscope, comprising a first end, a folding telescopic support, and a second end connected sequentially along a straight line. The folding telescopic support comprises a plurality of folding units connected sequentially along the direction from the first end to the second end. Each folding unit comprises a first folding plate and a second folding plate arranged in a cross configuration, and a through-hole pivot. The middle portion of the first folding plate is hinged to the middle portion of the second folding plate via a pivot portion, and the middle portion of the first folding plate has an assembly hole for assembling the through-hole pivot. The middle portion of the second folding plate has a clearance hole positioned opposite the assembly hole. A first channel is formed on the first end, a second channel is formed on the through-hole pivot, and a third channel is formed on the second end. The first channel, the second channel, and the third channel are coaxially arranged and are all used for inserting the bronchoscope.

[0008] The guide device for a bronchoscope includes a rotating shaft on both sides of the first folding plate. The rotating shaft protrudes from the middle of the first folding plate and has a through hole communicating with the mounting hole. The through hole is coaxial with the rotating shaft. The through-hole rotating shaft includes a plug block and connecting posts formed on both sides of the plug block. The plug block has a second channel formed in the direction from the first end to the second end. The connecting posts are plugged into the through hole.

[0009] The guide device for a bronchoscope, wherein the first folding plate is provided with a notch communicating with the through hole, the width of the notch being less than the diameter of the through hole; the cross-sectional shape of the connecting post is a circle with a portion cut off, the width of the widest part of the connecting post is equal to the diameter of the through hole, and the width of the narrowest part of the connecting post is equal to the width of the notch.

[0010] The guide device for a bronchoscope includes a triangular prism-shaped end on both the top and bottom of the insertion block; a first abutting protrusion on both the top and bottom of the mounting hole; and a second abutting protrusion on both the top and bottom of the clearance hole. When the first folding plate and the second folding plate are in a folded state, the first abutting protrusion and the second abutting protrusion abut against the two sides of the triangular prism-shaped end, respectively, to fix the insertion block.

[0011] The guide device for a bronchoscope, wherein the second folding plate includes a first component and a second component arranged in a left-right mirror configuration, a first collar portion is provided on the surface of the first component facing the first folding plate, and a second collar portion is provided on the surface of the second component facing the first folding plate, the first collar portion and the second collar portion are respectively sleeved on two rotating shaft portions on both sides of the first folding plate.

[0012] The guide device for a bronchoscope includes a mating hole formed on the first component in the direction toward the second component; a mating post is provided on the second component at a position opposite to the mating hole, and the mating post is inserted into the mating hole.

[0013] The guide device for bronchoscopes, wherein the first folding plate and the second folding plate are both Z-shaped.

[0014] The guide device for a bronchoscope includes a first end comprising a first body, a first rotating plate, a second rotating plate, a first gear, and a second gear. A first channel is formed on the centerline of the first body. The first rotating plate and the second rotating plate are both hinged to the first body and symmetrically distributed on both sides of the first channel. The end of the first rotating plate facing away from the first body is hinged to a second folding plate. The end of the second rotating plate facing away from the first body is hinged to the first folding plate. The first gear is sleeved on the rotating shaft where the first rotating plate is hinged to the first body. The second gear is sleeved on the rotating shaft where the second rotating plate is hinged to the first body. The first gear meshes with the second gear, and the first gear and the second gear have the same number of teeth.

[0015] The guide device for a bronchoscope includes a second end comprising a second body, a third rotating plate, a fourth rotating plate, a third gear, and a fourth gear. A third channel is formed on the centerline of the second body. The third and fourth rotating plates are hinged to the second body and symmetrically distributed on both sides of the third channel. The end of the third rotating plate facing away from the second body is hinged to a first folding plate. The end of the fourth rotating plate facing away from the second body is hinged to the second folding plate. The third gear is mounted on the pivot shaft where the third rotating plate is hinged to the second body. The fourth gear is mounted on the pivot shaft where the fourth rotating plate is hinged to the second body. The third gear meshes with the fourth gear, and the third gear, the fourth gear, the first gear, and the second gear all have the same number of teeth.

[0016] This application also discloses an interventional device, which includes a flexible bronchoscope and a guide device for the bronchoscope as described in any of the preceding claims.

[0017] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0018] The guide device for a bronchoscope disclosed in this invention includes a first end, a folding telescopic support, and a second end that are sequentially connected in a straight line. The folding telescopic support includes multiple folding units that are sequentially connected in the direction from the first end to the second end, and the multiple folding units can provide several support points for the exposed part of the bronchoscope, making it less prone to bending.

[0019] Specifically, in each folding unit, the middle of the first folding plate is hinged to the middle of the second folding plate via a pivot. During folding, the pivot remains stationary as the center of rotation; only the angle between the first and second folding plates changes. Therefore, the pivot with the through hole mounted in the middle of the first folding plate also remains stationary. In other words, the extension and retraction of the folding telescopic support does not change the position of the pivot with the through hole. When the bronchoscope is inserted into the first, second, and third channels, it can always be positioned in a straight line, facilitating bronchoscope intervention and allowing for accurate advancement of the bronchoscope in the designated direction. 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 recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front view of the assembly of the guide device for the bronchoscope in this invention;

[0022] Figure 2 This is a top view of the assembly of the guide device for the bronchoscope in this invention;

[0023] Figure 3 This is a reference diagram showing the compression state of the guide device for the bronchoscope in this invention;

[0024] Figure 4 This is a schematic diagram of the folding unit in this invention;

[0025] Figure 5 This is an exploded view of the folding unit structure in this invention;

[0026] Figure 6 This is a schematic diagram of the through-hole shaft in this invention;

[0027] Figure 7 This is another structural schematic diagram of the through-hole shaft in this invention;

[0028] Figure 8 This is another exploded view of the folding unit in this invention;

[0029] Figure 9 This is another exploded view of the folding unit in this invention;

[0030] Figure 10 This is an exploded view of the structure of the second folded plate in this invention;

[0031] Figure 11 This is a schematic diagram of the structure of two adjacent folding units in this invention;

[0032] Figure 12 This is an exploded view of the structure of two adjacent folding units in this invention.

[0033] Among them, 1. First end; 2. Folding telescopic bracket; 3. Second end; 11. First main body; 12. First rotating plate; 13. Second rotating plate; 14. First gear; 15. Second gear; 21. Folding unit; 211. First folding plate; 2111. Assembly hole; 21111. First abutting protrusion; 2112. Rotating shaft; 21121. Through hole; 2113. Notch; 2114. Second snap-fit ​​hole; 212. Second folding plate; 2121. Clearance hole; 21211, Second abutting protrusion; 2122, First component; 21221, First sleeve ring; 21222, Mating hole; 21223, First locking post; 2123, Second component; 21231, Second sleeve ring; 21232, Mating post; 21233, Second locking post; 213, Through-hole rotating shaft; 2131, Insertion block; 2132, Connecting post; 31, Second main body; 32, Third rotating plate; 33, Fourth rotating plate; 34, Third gear; 35, Fourth gear. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0035] See Figure 1 , Figure 2 , Figure 4 and Figure 5According to one embodiment of this invention application, a guide device for a bronchoscope is disclosed. The guide device includes a first end 1, a folding telescopic support 2, and a second end 3 connected sequentially in a straight direction. The folding telescopic support 2 includes a plurality of folding units 21 connected sequentially in the direction from the first end 1 to the second end 3. Each folding unit 21 includes a first folding plate 211 and a second folding plate 212 arranged in a cross configuration, and a through-hole pivot 213. The middle part of the first folding plate 211 is hinged to the middle part of the second folding plate 212 by a pivot 2112. The middle part of the first folding plate 211 has an assembly hole 2111 for assembling the through-hole pivot 213. The middle part of the second folding plate 212 has a clearance hole 2121 at a position opposite to the assembly hole 2111. A first channel is formed on the first end 1, a second channel is formed on the through-hole pivot 213, and a third channel is formed on the second end 3. The first channel, the second channel, and the third channel are arranged coaxially and are all used for inserting the bronchoscope.

[0036] In this embodiment, one end of the first end 1 is connected to the folding telescopic support 2, and the other end of the first end 1 is connected to a control device. The control device can drive the guide device for the bronchoscope to rotate, sway, and open and close. The bronchoscope is inserted from the first channel of the first end 1 and extends out into the third channel of the second end 3. One end of the second end 3 is connected to the folding telescopic support 2, and the other end of the second end 3 abuts against the human body cavity, so that the part of the bronchoscope exposed outside the human body moves forward in a straight line at a preset angle.

[0037] The folding telescopic support 2 of the bronchoscope guide device disclosed in this embodiment is mainly composed of several folding units 21. The several folding units 21 are sequentially hinged and continuously arranged. The first end 1 and the second end 3 are connected to the first end 1 and the second end 3 respectively. The number of folding units 21 can be increased or decreased by itself to meet different working scenarios and individual needs, improve the flexibility of the guide device and facilitate the operation of the user.

[0038] Specifically, in this embodiment, the folding unit 21 includes a first folding plate 211, a second folding plate 212, and a through-hole pivot 213 located at the center. Multiple through-hole pivots 213 are coaxially arranged to form a second channel. The folding unit 21 is generally X-shaped. The first folding plate 211 and the second folding plate 212 can be folded or unfolded around the through-hole pivot 213, so that the folding telescopic frame has good extensibility and can adapt to the extension and deformation of the bronchoscope, thus better realizing the bronchoscope's propulsion for human work.

[0039] The folding telescopic bracket 2 disclosed in this embodiment, when in the compressed state, such as Figure 3As shown, the first folding plate 211 and the second folding plate 212 are both Z-shaped. The first folding plate 211 and the second folding plate 212 are symmetrically assembled in a Z-shape, so that the first folding plate 211 and the second folding plate 212 in the folding unit 21 can be closed in a parallel shape. The shape of the through-hole shaft 213 is adapted to the gap shape formed by the assembly hole 2111 of the first folding plate 211 and the clearance hole 2121 of the second folding plate 212. Under the compressed state, the first folding plate 211 and the second folding plate 212 are tightly attached, realizing the linear connection of the first channel, the second channel and the third channel. This makes it easier and faster to insert the bronchoscope in the folding unit 21, and avoids the bronchoscope getting stuck or derailing during travel. The flexible endoscope moves forward in a straight line in the second channel with clear guidance, which facilitates rapid insertion.

[0040] Specifically, in this embodiment, the assembly hole 2111 is provided at the Z-shaped turning part of the first folding plate 211, and the clearance hole 2121 is provided at the Z-shaped turning part of the second folding plate 212. The horizontal width of the turning part of the first folding plate 211 and the second folding plate 212 is equal, and is equal to the horizontal width of the non-turning part of the first folding plate 211 and the second folding plate 212 when compressed, so that the folding unit 21 fits tightly in the closed state, and the folding telescopic bracket 2 can be folded and stored when not in use, reducing the storage space.

[0041] Specifically, the first folding plate 211 and the second folding plate 212 disclosed in this embodiment can be folded or unfolded around the through-hole pivot 213, so that the folding telescopic bracket 2 can provide rigid support and bending resistance for the flexible endoscope regardless of whether it is in a compressed or stretched state. Several folding units 21 form multiple support points, so that the flexible endoscope has the same effect as the rigid endoscope during insertion, ensuring the progress of the flexible endoscope advancement work and further improving the efficiency of the flexible endoscope advancement work.

[0042] like Figure 4 and Figure 5 As shown, as another implementation of this embodiment, a pivot portion 2112 is provided on both sides of the first folding plate 211, and the pivot portion 2112 protrudes from the middle of the first folding plate 211, so that the first folding plate 211 can be sleeved with the second folding plate 212.

[0043] Specifically, the rotating shaft 2112 is provided with a through hole 21121 communicating with the assembly hole 2111, and the through hole 21121 is coaxially arranged with the rotating shaft 2112; the through hole rotating shaft 213 includes a plug block 2131 and connecting posts 2132 formed on both sides of the plug block 2131. The side cross-sectional view of the plug block 2131 is hexagonal rhombus. The connecting posts 2132 are located at the center of the side of the plug block 2131. The plug block 2131 has a second channel formed in the direction from the first end 1 to the second end 3; the connecting posts 2132 are plugged into the through hole 21121, which has the effect of inserting the through hole rotating shaft 213 into the assembly hole 2111 of the first folding plate 211, thereby improving the stability between the through hole rotating shaft 213 and the first folding plate 211.

[0044] Specifically, the first folding plate 211 disclosed in this embodiment is provided with a notch 2113 communicating with the through hole 21121. The width of the notch 2113 is smaller than the diameter of the through hole 21121. The cross-section of the rotating shaft portion 2112 is a C-shaped annular hole, so that when the connecting post 2132 is fitted into the through hole 21121, it will not slide out of the through hole 21121 through the notch 2113, thereby reducing the risk of the through hole rotating shaft 213 falling off during use.

[0045] Specifically, in this embodiment, the cross-sectional shape of the connecting post 2132 is a circle with a portion cut off. The width of the widest part of the connecting post 2132 is equal to the diameter of the through hole 21121, and the width of the narrowest part of the connecting post 2132 is equal to the width of the notch 2113.

[0046] In this embodiment, when installing the first folding plate 211, the second folding plate 212, and the through-hole pivot 213, the mounting holes of the first folding plate 211 and the clearance holes 2121 of the second folding plate 212 are first aligned and inserted. Then, the narrowest part of the connecting post 2132 of the through-hole pivot 213 is aligned with the notch 2113 and inserted, so that the connecting post 2132 of the through-hole pivot 213 can be fitted and locked in the through-hole 21121 through the notch 2113. The insertion block 2131 is adjusted to a vertical state. In subsequent use, since the rotation angle will not reach the angle during installation, the through-hole pivot 213 will not come out of the through-hole 21121. The assembly is simple and convenient, and the assembly has good stability and is easy to use.

[0047] like Figure 6As shown, in some products requiring high rigidity, this embodiment preferably cuts off a portion of the connecting post 2132 along the length of the insertion block 2131, so that the cut surface is perpendicular to the plane containing the second channel on the insertion block 2131. During assembly, the through-hole shaft 213 needs to be passed laterally through the notch 2113 and then rotated 90° to make the insertion block 2131 vertical. At this time, the second channel is coaxial with the first and third channels to facilitate the insertion of the bronchoscope. Therefore, during use, the through-hole shaft 213 remains vertical, and the cut surface on the connecting post 2132 cannot be aligned with the notch 2113, which maintains the stability of the through-hole shaft 213 and prevents it from detaching from the through-hole 21121.

[0048] like Figure 7 As shown, in some products with very high requirements for rigid materials, in this embodiment, in order to facilitate the installation of the through-hole shaft 213, a portion can be cut off on both sides of the connecting post 2132 to form a racetrack-shaped column structure. During assembly, the two cut surfaces are aligned with the upper and lower surfaces of the notch 2113, and then inserted into the through hole 21121. The through-hole shaft 213 is rotated so that the cut surfaces of the connecting post 2132 are misaligned with the notch, thereby constraining the through-hole shaft 213 within the through hole 21121 and maintaining a stable connection.

[0049] like Figure 8 and Figure 9 As shown, as another implementation of this embodiment, the second folding plate 212 is disclosed to include a first component 2122 and a second component 2123 arranged in a left-right mirror configuration. This configuration facilitates mold making, reduces production and design costs, and also facilitates assembly.

[0050] Specifically, a first ring portion 21221 is provided on the surface of the first component 2122 facing the first folding plate 211, and a second ring portion 21231 is provided on the surface of the second component 2123 facing the first folding plate 211. The first ring portion 21221 and the second ring portion are symmetrically arranged on the side wall of the clearance hole 2121. The first ring portion 21221 and the second ring portion 21231 are respectively sleeved on the two rotating shaft portions 2112 on both sides of the first folding plate 211.

[0051] Specifically, in this embodiment, the inner diameter of the first ring portion 21221 and the second ring portion is larger than the diameter of the rotating shaft portion 2112. During installation, the first component 2122 and the second component 2123 of the second folding plate 212 can be separated, so that the first ring portion 21221 and the second ring portion 21231 are fitted onto the rotating shaft portion 2112, reducing the assembly difficulty.

[0052] For example Figure 8 and Figure 9As shown, in this embodiment, the first component 2122 has a mating hole 21222 formed along the direction toward the second component 2123; the second component 2123 has a mating post 21232 at a position opposite to the mating hole 21222, and the mating post 21232 is inserted into the mating hole 21222.

[0053] In this embodiment, the mating posts 21232 are symmetrically protruding on the side wall of the second component 2123 facing the first component 2122. The length of the mating posts 21232 is less than the horizontal width of the first component 2122. During assembly, the mating posts 21232 symmetrically arranged on the second component 2123 are inserted into the mating holes 21222 provided at the corresponding positions of the first component 2122, so that the second folding plate 212 is assembled flat, and the first component 2122 and the second component 2123 can be easily aligned to complete the assembly.

[0054] like Figure 10 As shown, in another embodiment of this invention, a mating groove may be provided on the surface of the first component 2122 facing the second component 2123, and the mating groove communicates with the mating hole 21222; a mating strip may be provided on the surface of the second component 2123 facing the first component 2122, and the mating strip is integrated with the mating post 21232. During assembly, the mating strip is inserted into the mating groove, and at the same time, the mating post 21232 is inserted into the mating hole 21222, making the connection between the first component 2122 and the second component 2123 more stable and preventing loosening.

[0055] Specifically, the mating hole 21222 disclosed in this embodiment can be a through hole. The first component 2122 and the second component 2123 are connected by driving a fastening screw into the side of the mating hole 21222 away from the second component 2123. In this case, the mating post 21232 may not even need to be provided. Reducing the provision of the mating post 21232 can simplify assembly, facilitate mold opening, and reduce the overall weight of the finished product, making it more convenient to use.

[0056] like Figure 9 and Figure 10 As shown, the top and bottom ends of the plug block 2131 disclosed in this embodiment are both formed with triangular prism-shaped ends; the top and bottom ends of the assembly hole 2111 are both provided with first abutting protrusions 21111; the first abutting protrusions 21111 are also symmetrically arranged on both sides of the assembly hole 2111 to increase the stability of the folding unit 21 in use.

[0057] Specifically, in this embodiment, there are four first abutting protrusions 21111, and the top and bottom ends of the clearance hole 2121 are provided with second abutting protrusions 21211. The second abutting protrusions 21211 are also symmetrically arranged on both sides of the clearance hole 2121. That is to say, there are four second abutting protrusions 21211. When the first folding plate 211 and the second folding plate 212 are in the folded state, the first abutting protrusions 21111 and the second abutting protrusions 21211 abut against the two sides of the triangular prism end respectively, for fixing the insertion block 2131, so that the insertion block 2131 is in a vertical state, so that the second channel is kept on the same axis, which facilitates the bronchoscope to quickly pass through the channel in a straight line.

[0058] like Figure 10 , Figure 11 and Figure 12 As shown, as another implementation of this embodiment, the folding unit 21 is arranged sequentially in a hinged manner. The first component 2122 has protruding first locking posts 21223 symmetrically facing inward at both ends away from the avoidance hole 2121. The second component 2123 is also provided with second locking posts 21233 at the mirror position of the first component 2122. The first folding plate 211 has second locking holes 2114 at corresponding positions at both ends away from the assembly hole 2111.

[0059] When the two folding units 21 are assembled, the second snap-fit ​​hole 2114 above the first folding unit 21 snaps into the first snap-fit ​​post 21223 and the second snap-fit ​​post 21233 above the second folding unit 21, and the first snap-fit ​​post 21223 and the second snap-fit ​​post 21233 below the first folding unit 21 snaps into the second snap-fit ​​hole 2114 below the second folding unit 21. Multiple folding units 21 are arranged in sequence to form a folding telescopic bracket 2. A complex folding telescopic bracket 2 is established using a simple connection method to achieve higher stability.

[0060] like Figure 1 , Figure 2 and Figure 3As shown, in another implementation of this embodiment, the first end 1 includes a first body 11, a first rotating plate 12, a second rotating plate 13, a first gear 14, and a second gear 15. The first channel is formed on the center line of the first body 11. The first rotating plate 12 and the second rotating plate 13 are both hinged to the first body 11 and are symmetrically distributed on both sides of the first channel. The end of the first rotating plate 12 facing away from the first body 11 is hinged to the second folding plate 212. The end of the second rotating plate 13 facing away from the first body 11 is hinged to the folding plate. The first gear 14 is sleeved on the rotating shaft where the first rotating plate 12 is hinged to the first body 11. The second gear 15 is sleeved on the rotating shaft where the second rotating plate 13 is hinged to the first body 11. The first end 1 has a simple structure, is easy to maintain, and can be reused, greatly reducing the cost of raw materials and maintenance.

[0061] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, in another implementation of this embodiment, the first rotating plate 12 is provided with first locking holes on both sides of the end away from the first main body 11, and the second folding plate 212 is provided with first locking posts 21223 and second locking posts 21233 symmetrically at positions corresponding to the first locking holes. The first rotating plate 12 and the second folding plate 212 are hinged through the first locking posts 21223, the second locking posts 21233 and the first locking holes, and in the compressed state, the shape of the first rotating plate 12 is aligned with the clearance hole 2121 of the second folding plate 212. The upper part is adapted; the second rotating plate 13 is provided with a protruding first snap-fit ​​part on both sides of the end away from the first main body 11, and the first folding plate 211 is provided with a second snap-fit ​​hole 2114 at the corresponding position of the first snap-fit ​​part. The second rotating plate 13 and the first folding plate 211 are hinged through the first snap-fit ​​part and the second snap-fit ​​hole 2114. In the compressed state, the shape of the second rotating plate 13 is adapted to the part below the assembly hole 2111 of the first folding plate 211. Furthermore, the first channel and the second channel are linearly connected, making it easier to insert the bronchoscope.

[0062] Specifically, the second end 3 disclosed in this embodiment includes a second main body 31, a third rotating plate 32, a fourth rotating plate 33, a third gear 34, and a fourth gear 35. The third channel is formed on the center line of the second main body 31. The third rotating plate 32 and the fourth rotating plate 33 are both hinged to the second main body 31 and symmetrically distributed on both sides of the third channel. The end of the third rotating plate 32 facing away from the second main body 31 is hinged to the first folding plate 211. The end of the fourth rotating plate 33 facing away from the second main body 31 is hinged to the second folding plate 212. The third gear 34 is sleeved on the pivot shaft where the third rotating plate 32 is hinged to the second main body 31. The fourth gear 35 is sleeved on the pivot shaft where the fourth rotating plate 33 is hinged to the second main body 31. The third gear 34 and the fourth gear 35 mesh. Only a small amount of driving force is needed to achieve rapid folding and unfolding of the foldable telescopic frame through gear meshing, resulting in high energy efficiency and environmental friendliness.

[0063] Specifically, in this embodiment, the third rotating plate 32, located away from the second main body 31, has protruding second locking portions on both sides. The first folding plate 211 has second locking holes 2114 at corresponding positions to the second locking portions. The third rotating plate 32 and the first folding plate 211 are hinged together via the second locking portions and the second locking holes 2114. In the compressed state, the shape of the third rotating plate 32 is adapted to the portion of the first folding plate 211 above the mounting hole 2111. The fourth rotating plate 33, located away from the second main body 31... The second folding plate 212 is provided with a third locking hole on both sides of one end. The second folding plate 212 is symmetrically provided with a first locking post 21223 and a second locking post 21233 at the corresponding positions of the third locking holes. The fourth rotating plate 33 and the second folding plate 212 are hinged through the first locking post 21223, the second locking post 21233 and the third locking hole. In the compressed state, the shape of the fourth rotating plate 33 is adapted to the part below the avoidance hole 2121 of the second folding plate 212. Furthermore, the third channel and the second channel are linearly connected, making it easier to insert the flexible lens.

[0064] Specifically, in this embodiment, the first gear 14, the second gear 15, the third gear 34, and the fourth gear 35 all have the same number of teeth. If the number of teeth is different, the meshing between the gears will be discontinuous, potentially causing noise and vibration, and adversely affecting the lifespan of the gears and the guiding device. The first gear 14 meshes with the second gear 15, and the third gear 34 meshes with the fourth gear 35. Rotating by one number of teeth ensures that the transmission ratios of the first rotating plate 12, the second rotating plate 13 relative to the first main body 11, the third rotating plate 32, and the fourth rotating plate 33 relative to the second main body 31 are the same, and the torque changes are the same. Therefore, during the folding process, the middle positions of the first and second folding plates can remain stationary, allowing the first, second, and third channels to maintain a coaxial extension, thereby maintaining the straightness of the bronchoscope and facilitating intervention.

[0065] Specifically, in this embodiment, the first gear 14, the second gear 15, the third gear 34, and the fourth gear 35 have 17 to 120 teeth. The more teeth a gear has, the higher its transmission accuracy. Depending on the number of teeth set, the minimum telescopic distance of the folding telescopic bracket can be controlled, thereby improving the control flexibility of the folding telescopic bracket.

[0066] As another embodiment of this application, an interventional device is disclosed, which includes a guide device for bronchoscopy as described above. The interventional device in this embodiment may include a main unit, with an instrument box and a drive device connected to the main unit. The front end of the instrument box is connected to the guide device for bronchoscopy. The guide device is automatically and precisely controlled by the main unit, which improves the efficiency and stability of operation. When applied in clinical practice, it can be used to perform work efficiently.

[0067] In summary, this application discloses a guide device and interventional equipment for a bronchoscope. The guide device includes a first end 1, a folding telescopic support 2, and a second end 3 sequentially connected in a straight line. The folding telescopic support 2 includes multiple folding units 21 sequentially connected in a direction from the first end 1 to the second end 3. The number of folding units 21 is adjustable to meet usage requirements, making the length of the exposed portion of the bronchoscope controllable and the advancement stroke more precise. Furthermore, the multiple folding units 21 can provide several support points for the exposed portion of the bronchoscope, making it less prone to bending. Each folding unit 21 includes a first folding plate 211 and a... The second folding plate 212 and the through-hole pivot 213 are provided. The middle part of the first folding plate 211 is hinged to the middle part of the second folding plate 212 by a pivot 2112. The middle part of the first folding plate 211 has an assembly hole 2111 for assembling the through-hole pivot 213. The middle part of the second folding plate 212 has a clearance hole 2121 at the position opposite to the assembly hole 2111, making it easy to assemble and disassemble the folding unit 21. A first channel is formed on the first end 1, a second channel is formed on the through-hole pivot 213, and a third channel is formed on the second end 3. The first channel, the second channel, and the third channel are arranged coaxially and are all used for inserting a bronchoscope.

[0068] During the folding and telescopic support 2's folding process, the pivot 2112 remains stationary as the center of rotation; only the angle between the first folding plate 211 and the second folding plate 212 changes. Therefore, the through-hole pivot 213 mounted in the middle of the first folding plate 211 also remains stationary. In other words, the extension and retraction of the folding and telescopic support 2 does not change the position of the through-hole pivot 213. When the bronchoscope is inserted into the first, second, and third channels, it can remain aligned in a straight line, facilitating bronchoscope intervention and ensuring accurate advancement of the bronchoscope in the designated direction.

[0069] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0070] It should be noted that the present invention is described in the example of a guide device for a bronchoscope to illustrate the specific structure and working principle of the present invention. However, the application of the present invention is not limited to guide devices for bronchoscopes, and can also be applied to other similar workpieces.

[0071] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A guide device for a bronchoscope, characterized in that, The guiding device includes a first end, a folding telescopic bracket, and a second end that are sequentially connected along a straight line. The folding telescopic bracket includes a plurality of folding units that are sequentially connected along the direction from the first end to the second end. Each folding unit includes a first folding plate and a second folding plate that are arranged in a cross configuration, and a through-hole pivot. The middle part of the first folding plate is hinged to the middle part of the second folding plate through a pivot, and the middle part of the first folding plate has an assembly hole for assembling the through-hole pivot. The middle part of the second folding plate has a clearance hole at a position opposite to the assembly hole. The first end has a first channel, the through-hole shaft has a second channel, and the second end has a third channel. The first channel, the second channel, and the third channel are coaxially arranged and are all used for inserting a bronchoscope. Both the first folding plate and the second folding plate are Z-shaped, and the first folding plate and the second folding plate are assembled in a symmetrical Z-shape; the first folding plate and the second folding plate are configured such that, in the closed state, the first folding plate and the second folding plate remain parallel; The through-hole shaft includes a plug block and connecting posts formed on both sides of the plug block; The top and bottom ends of the plug block are both formed with triangular prism-shaped ends; The top and bottom of the assembly hole are each provided with a first abutting protrusion; the top and bottom of the clearance hole are each provided with a second abutting protrusion. When the first folding plate and the second folding plate are in a folded state, the first abutting protrusion and the second abutting protrusion abut against the two sides of the triangular prism end respectively, for fixing the plug-in block.

2. The guiding device for a bronchoscope according to claim 1, characterized in that, The first folding plate has a pivot portion on both sides, the pivot portion protruding from the middle of the first folding plate, the pivot portion having a through hole communicating with the assembly hole, and the through hole being coaxial with the pivot portion; The plug block has a second channel formed along the direction from the first end to the second end; the connecting post is plugged into the through hole.

3. The guiding device for a bronchoscope according to claim 2, characterized in that, The first folding plate is provided with a notch that connects to the via, and the width of the notch is smaller than the diameter of the via; The connecting post has a cross-sectional shape that is a circle with a portion cut off. The width of the widest part of the connecting post is equal to the diameter of the through hole, and the width of the narrowest part of the connecting post is equal to the width of the notch.

4. The guiding device for a bronchoscope according to claim 1, characterized in that, The second folding plate includes a first component and a second component arranged in a left-right mirror configuration. The first component has a first loop portion on its surface facing the first folding plate, and the second component has a second loop portion on its surface facing the first folding plate. The first loop portion and the second loop portion are respectively fitted onto the two rotating shaft portions on both sides of the first folding plate.

5. The guiding device for a bronchoscope according to claim 4, characterized in that, The first component has a mating hole formed along the direction toward the second component; the second component has a mating post at a position opposite to the mating hole, and the mating post is inserted into the mating hole.

6. The guiding device for a bronchoscope according to claim 1, characterized in that, The first end includes: A first main body, on the center line of which the first channel is formed; A first rotating plate and a second rotating plate are both hinged to the first main body and symmetrically distributed on both sides of the first channel; the end of the first rotating plate facing away from the first main body is hinged to the second folding plate; the end of the second rotating plate facing away from the first main body is hinged to the first folding plate. The first gear is sleeved on the rotating shaft that is hinged between the first rotating plate and the first main body; The second gear is sleeved on the rotating shaft that is hinged between the second rotating plate and the first main body; The first gear meshes with the second gear, and the first gear and the second gear have the same number of teeth.

7. The guiding device for a bronchoscope according to claim 6, characterized in that, The second end includes: The second body has the third channel formed on its center line; The third rotating plate and the fourth rotating plate are both hinged to the second main body and are symmetrically distributed on both sides of the third channel; the end of the third rotating plate facing away from the second main body is hinged to the first folding plate; the end of the fourth rotating plate facing away from the second main body is hinged to the second folding plate. The third gear is sleeved on the rotating shaft that is hinged between the third rotating plate and the second main body; The fourth gear is fitted onto the pivot shaft that is hinged to the fourth rotating plate and the second main body; The third gear meshes with the fourth gear, and the third gear, the fourth gear, the first gear, and the second gear all have the same number of teeth.

8. An interventional device, characterized in that, It includes a flexible bronchoscope and a guide device for a bronchoscope as described in any one of claims 1 to 7.

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