Fiber optic bundle anti-bending sheet for traction mechanism, traction mechanism, handle and endoscope

Abstract

The present invention provides an optical fiber bundle anti-bending sheet for a traction mechanism, a traction mechanism, a handle and an endoscope, which belong to the technical field of endoscopes. The anti-bending sheet is a smoothly curved structure, having a first bending section and a second bending section connected in sequence, the first bending section bends toward the first surface side of the anti-bending sheet, and the second bending section bends toward the second surface side of the anti-bending sheet, and the first surface side and the second surface side are arranged opposite to each other; the anti-bending sheet has a through hole for the optical fiber bundle to pass through. The traction mechanism includes an optical fiber bundle, at least one traction component and an anti-bending sheet, and the anti-bending sheet is fixedly connected to the traction component; the traction component has an entrance fixing and an exit fixing for the optical fiber bundle to pass through, and the optical fiber bundle passes through the entrance fixing, the exit fixing and the through hole in sequence, and the exit fixing is located on the second surface side. The present application solves the problem that the existing traction rope fixing method is not suitable for fixing the optical fiber bundle by cooperating with the linear traction structure and the anti-bending sheet.

Description

Technical Field

[0001] The present invention belongs to the technical field of endoscopes, and in particular relates to an optical fiber bundle anti-bending sheet for a traction mechanism, a traction mechanism, a handle and an endoscope. Background Art

[0002] Endoscopes are widely used in modern medicine. During specific use, the active bending section of the insertion part can be bent by pulling the traction rope, thereby controlling the bending direction of the front end of the insertion part and obtaining image information of the target position.

[0003] In the structure of the endoscope, the instrument tube and the optical fiber bundle are both arranged in the installation channel of the active bending section, which limits the layout space of the instrument tube. Therefore, related technologies have emerged that use optical fiber bundles instead of traction ropes to achieve the pulling function. However, due to material limitations, the optical fiber bundle is fragile and easy to break, and it is necessary to avoid bending and deformation of the optical fiber bundle during use; however, the traction rope fixing method of the existing traction structure is not suitable for the optical fiber bundle. If the existing traction rope fixing method is directly selected to fix the optical fiber bundle in the endoscope handle, the optical fiber bundle will be damaged. Summary of the Invention

[0004] The purpose of this application is to provide an optical fiber bundle anti-bending sheet for a traction mechanism, a traction mechanism, a handle and an endoscope to solve the above-mentioned technical problems existing in the prior art.

[0005] This application is implemented as follows:

[0006] In the first aspect, an embodiment of the present application provides an anti-bending plate for an optical fiber bundle for a traction mechanism. The anti-bending plate has a smoothly curved structure. The anti-bending plate has a first bending section and a second bending section connected in sequence. The first bending section bends toward the first surface side of the anti-bending plate, and the second bending section bends toward the second surface side of the anti-bending plate. The first surface side and the second surface side are arranged opposite to each other; the anti-bending plate has a through hole for the optical fiber bundle to pass through.

[0007] In the above technical solution, the anti-bending sheet has a fixed bending direction, and the optical fiber bundle can be laid along the surface of the anti-bending sheet. When the optical fiber bundle bends, the anti-bending sheet can limit the bending direction of the optical fiber bundle while also supporting the optical fiber bundle; the through hole provided on the anti-bending sheet can connect the raised parts of the two bending sections to guide the direction of the optical fiber bundle. After the optical fiber bundle is laid on the raised part of the first bending section, it can pass through the through hole and be laid on the raised part of the second bending section, making full use of the structure of the anti-bending sheet to support and limit the optical fiber bundle, and when the optical fiber bundle passes through the through hole, the through hole can limit the position of the optical fiber bundle to a certain extent, preventing the optical fiber bundle from falling off from the surface of the anti-bending sheet; the anti-bending sheet with a fixed bending structure can limit the bending direction of the optical fiber bundle, ensure the bending degree of the optical fiber bundle, and avoid the optical fiber bundle being damaged due to arbitrary bending.

[0008] Furthermore, the through hole is a strip hole, and the length direction of the through hole is arranged along the length direction of the anti-bending plate. The strip hole is long, and the optical fiber bundle is less constrained when passing through the through hole, and the optical fiber bundle is not easily damaged.

[0009] Furthermore, the through hole is partially located in the first curved section and partially located in the second curved section.

[0010] Furthermore, a first limiting plate is fixedly connected to the end of the through hole near the first curved section, the first limiting plate is arranged tangent to the first curved section, and the first limiting plate is bent toward the first surface side; a second limiting plate is fixedly connected to the end of the through hole near the second curved section, the second limiting plate is arranged tangent to the second curved section, and the second limiting plate is bent toward the second surface side. The first limiting plate and the second limiting plate can further limit the bending curvature of the optical fiber bundle, and further avoid bending of the optical fiber bundle.

[0011] Furthermore, the surface of the first bending section facing away from the first surface and the surface of the second bending section facing away from the second surface are both provided with limiting grooves, the length direction of the limiting grooves being arranged along the length direction of the anti-bending plate, the optical fiber bundle can be laid in the limiting grooves, and the limiting grooves are used to limit the position of the optical fiber bundle in the width direction of the anti-bending plate.

[0012] In the second aspect, an embodiment of the present application provides a fiber optic bundle traction mechanism, comprising at least one fiber optic bundle anti-bending sheet as described in the first aspect of the embodiment of the present application, and also comprising a linear drive mechanism and a fiber optic bundle; the linear drive mechanism comprises at least one traction component, and the end of the first bending section of the anti-bending sheet away from the second bending section is fixedly connected to the traction component; the traction component has an entrance fixing portion and an exit fixing portion for the fiber optic bundle to pass through, and the fiber optic bundle passes through the entrance fixing portion, the exit fixing portion and the through hole in sequence, and the exit fixing portion is located on the second surface side of the anti-bending sheet; when the fiber optic bundle is used as a traction rope, the fiber optic bundle is fixed on the traction component, and the proximal end of the fiber optic bundle is fixed to the corresponding signal transceiver device, and the signal transceiver device is usually directly fixed in the endoscope handle. Therefore, the length of the fiber optic bundle between the signal transceiver device and the traction component is constant. When the traction component moves, the distance between the signal transceiver device and the traction component will change accordingly. When the distance becomes shorter, the fiber optic bundle will bend, and when the distance becomes longer, the fiber optic bundle will gradually straighten. The anti-bending sheet is used to limit the bending direction of the fiber optic bundle to prevent the fiber optic bundle from being bent arbitrarily and damaged.

[0013] Furthermore, the traction mechanism also includes a fixing part, which is used to be fixed inside the handle of the endoscope. The fixing part is located on the first surface side of the first curved segment and on the moving path of the first curved segment; when the traction component moves toward the distal end of the optical fiber bundle, the distance between the traction component and the signal transceiver device will become longer. At the same time, the first curved segment fixed to the traction component will contact the fixing part and gradually straighten during the movement, and the optical fiber bundle laid on the surface of the first curved segment will also gradually straighten and stretch to match the gradually increasing distance between the traction component and the signal transceiver device.

[0014] Furthermore, the fixing member includes a fixed shaft and a sleeve, the fixed shaft is used to be fixedly connected to the inside of the endoscope handle, and the sleeve is rotatably sleeved outside the fixed shaft.

[0015] In a third aspect, an embodiment of the present application provides an endoscope handle, comprising the optical fiber bundle traction mechanism described in the second aspect of the embodiment of the present application.

[0016] In a fourth aspect, an embodiment of the present application provides an endoscope, comprising the endoscope handle described in the third aspect of the embodiment of the present application.

[0017] The beneficial effects of the present invention are:

[0018] 1. In the present invention, the problem that the existing traction rope fixing method is not suitable for fixing the optical fiber bundle is solved by cooperating with the linear traction mechanism and the anti-bending plate; since the distance between the traction component and the signal transceiver device will change with the movement of the traction component, an anti-bending plate is set between the traction component and the signal transceiver device of the optical fiber bundle, so that the optical fiber bundle can be bent in a fixed direction, which can avoid the situation where the optical fiber bundle is damaged due to arbitrary bending.

[0019] 2. In the present invention, the anti-bending sheet has a first bending section and a second bending section that bend in opposite directions. The two sections work together to limit the bending direction of the optical fiber bundle when the optical fiber bundle is laid on the surface of the anti-bending sheet, thereby protecting the optical fiber bundle.

[0020] 3. In the present invention, a first limiting piece and a second limiting piece are further provided on the anti-bending piece. The two limiting pieces further limit the bending trajectory of the optical fiber bundle, preventing the optical fiber bundle from bending in directions other than the specified direction.

[0021] 4. In the present invention, a fixing part and an anti-bending sheet are provided to cooperate with each other. When the optical fiber bundle is gradually stretched by bending, the anti-bending sheet is also stretched under the action of the fixing part. The two are stretched synchronously, so that the optical fiber bundle is always synchronized with the anti-bending sheet, further avoiding the situation where the optical fiber bundle is damaged due to accidental bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 The structure of the anti-bending sheet provided in Example 1 of the present invention is Figure 1 ;

[0024] Figure 2 The structure of the anti-bending sheet provided in Example 1 of the present invention is Figure 2 ;

[0025] Figure 3 is a cross-sectional structural diagram of the anti-bending sheet provided in Example 1 of the present invention;

[0026] Figure 4 The structure of the traction mechanism provided in Example 2 of the present invention is Figure 1 ;

[0027] Figure 5 The structure of the traction mechanism provided in Example 2 of the present invention is Figure 2 .

[0028] Description of reference numerals:

[0029] 100-anti-bending plate, 110-first bending section, 120-second bending section, 130-through hole, 140-first limiting plate, 150-second limiting plate, 160-limiting groove, 200-fixing part, 300-linear drive mechanism, 310-traction component, 311-fixed base, 312-moving block, 313-entrance fixing point, 314-exit fixing point, 330-transmission assembly, 400-optical fiber bundle. DETAILED DESCRIPTION

[0030] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0031] In the related art, the optical fiber bundle 400 is chosen to replace the traditional traction rope, so that the optical fiber bundle 400 no longer occupies the layout space within the active bending section of the insertion part, thereby increasing the layout space of the instrument tube; however, since the optical fiber bundle 400 is brittle and easy to break, in order to avoid damaging the optical fiber bundle 400, the optical fiber bundle 400 cannot be directly fixed by the traditional traction rope fixing method.

[0032] The present application chooses to use a linear traction mechanism to fix the optical fiber bundle 400. The optical fiber bundle 400 is fixed on the traction component 310 of the linear traction mechanism. The optical fiber bundle 400 moves along with the traction component 310 in a fixed straight line direction, thereby realizing the bending or straightening of the active bending section of the insertion part. The proximal end of the optical fiber bundle 400 is connected to the relevant signal transceiver device, wherein the signal transceiver device can be a light source box that emits a light source signal, or it can be a device that receives information transmitted from the optical fiber bundle 400; since the length of the optical fiber bundle 400 between the traction component 310 and the signal transceiver device is unchanged, but since the traction component 310 needs to move, the distance between the traction component 310 and the signal transceiver device will change, and the fixed length of the optical fiber bundle 400 is set between this distance. As the distance changes, the optical fiber bundle 400 will also bend or straighten accordingly, but since the optical fiber bundle 400 is a brittle and easily broken structure, when the optical fiber bundle 400 is bent arbitrarily, it is easy to bend.

[0033] Therefore, in some embodiments of the present application, an anti-bending sheet 100 is provided to limit the bending direction of the optical fiber bundle 400 and prevent the optical fiber bundle 400 from bending randomly.

[0034] It should be noted that in each embodiment of the present application, "proximal end" and "distal end" refer to the distance between the endoscope and its accessories and the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0035] The embodiments of the present application do not limit the specific type of the optical fiber bundle 400. For example, it can be an optical fiber bundle 400 for lighting, used to transmit light from a light source to the distal side of the insertion part, or it can be an optical fiber bundle 400 for photographing, used to transmit external light on the distal side of the insertion part back to the camera module.

[0036] The technical solutions disclosed in various embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] This embodiment provides an optical fiber bundle anti-bending sheet for a traction mechanism, combined with Figures 1 to 3 As shown, the anti-bending sheet 100 has a smoothly curved structure. Each part of the anti-bending sheet 100 has only one tangent. The anti-bending sheet 100 has a first bending section 110 and a second bending section 120 connected in sequence. The first bending section 110 bends toward the first surface side of the anti-bending sheet 100, and the second bending section 120 bends toward the second surface side of the anti-bending sheet 100. The first surface side and the second surface side are arranged opposite to each other; the anti-bending sheet 100 has a through hole 130 for the optical fiber bundle 400 to pass through.

[0039] The anti-bending sheet 100 has a fixed bending direction. The first bending section 110 and the second bending section 120 are bent in different directions respectively. The two bending sections are smoothly connected. Under the condition that the bending curvature is not too large, a longer optical fiber bundle 400 can be laid on the surface of the anti-bending sheet 100. The optical fiber bundle 400 is laid on the surface of the anti-bending sheet 100. On the one hand, the anti-bending sheet 100 can limit the bending direction of the optical fiber bundle 400 to prevent the optical fiber bundle 400 from bending arbitrarily and causing damage. On the other hand, the anti-bending sheet 100 can play a certain supporting role for the optical fiber bundle 400. There is a support below the optical fiber bundle 400, so that the optical fiber The bending structure of the bundle 400 is more stable; and the through hole 130 provided on the anti-bending sheet 100, on the one hand, has a limiting effect on the optical fiber bundle 400, limits the range of movement of the optical fiber bundle 400, and can prevent the optical fiber bundle 400 from falling off the anti-bending surface; on the other hand, the through hole 130 connects the raised parts of the first bending section 110 and the second bending section 120, and can guide the direction of the optical fiber bundle 400. After the optical fiber bundle 400 is laid on the raised part of the first bending section 110, it can pass through the through hole 130 and be laid on the raised part of the second bending section 120, so that the optical fiber bundle 400 can be smoothly laid on the raised part of the anti-bending sheet 100.

[0040] During specific use, the optical fiber bundle 400 is directly laid on the second surface side of the first curved section 110, that is, the convex surface of the first curved section 110, and is bent according to the curved structure of the first curved section 110. The first curved section 110 also supports the optical fiber bundle 400. Then, the optical fiber bundle 400 passes through the through hole 130, and the through hole 130 limits the position of the optical fiber bundle 400 in the width direction of the anti-bending sheet 100. At the same time, since the optical fiber bundle 400 passes through the through hole 130, it can prevent the optical fiber bundle 400 from falling off the anti-bending sheet 100. After passing through the through hole 130, the optical fiber bundle 400 is laid on the second surface side of the second curved section 120, that is, the raised part of the second curved section 120. The optical fiber bundle 400 is bent according to the curved structure of the second curved side, and the second curved section 120 forms a support for the optical fiber bundle 400. Since the curved structures of the first curved section 110 and the second curved section 120 are fixed, when the optical fiber bundle 400 bends along the fixed curved structure, the curved structure of the optical fiber bundle 400 can be guaranteed, and the situation where the optical fiber bundle 400 is damaged due to arbitrary bending can be avoided.

[0041] The through hole 130 on the anti-bending plate 100 is a strip hole structure. The length direction of the through hole 130 is set along the length direction of the anti-bending plate 100. The strip hole is relatively long. When the optical fiber bundle 400 passes through the through hole 130, the constraint in the length direction is small, and the optical fiber bundle 400 is not easily damaged. In other embodiments, it can also be a circular hole or an irregularly shaped hole. When the length of the through hole 130 along the length direction of the anti-bending plate 100 is much larger than the diameter of the optical fiber bundle 400, it can ensure that the optical fiber bundle 400 can move smoothly in the through hole 130, and the optical fiber bundle 400 is not easily rubbed against the sharp edges at the end of the through hole 130.

[0042] The through hole 130 is generally arranged between the first curved section 110 and the second curved section 120, partly located in the first curved section 110 and partly located in the second curved section 120. The through hole 130 arranged in the middle can enable the optical fiber bundle 400 to be completely laid on the raised part of the first curved section 110 or the second curved section 120 during laying. Every part of the optical fiber bundle 400 is supported, further preventing the optical fiber bundle 400 from bending.

[0043] In this embodiment, a first limiting piece 140 and a second limiting piece 150 are further provided to limit the bending direction of the optical fiber bundle 400. Figure 2 As shown, the first limiting plate 140 is fixedly connected to the end position of the through hole 130 near the first curved section 110, the first limiting plate 140 is arranged tangent to the first curved section 110, and the first limiting plate 140 is bent toward the first surface side; the second limiting plate 150 is fixedly connected to the end position of the through hole 130 near the second curved section 120, the second limiting plate 150 is arranged tangent to the second curved section 120, and the second limiting plate 150 is bent toward the second surface side. The first limiting plate 140 and the second limiting plate 150 can further limit the bending curvature of the optical fiber bundle 400, and further avoid the optical fiber bundle 400 from bending.

[0044] In a specific implementation, the end of the first limiting plate 140 away from the first bending section 110 is located on the first surface side, the end of the second limiting plate 150 away from the second bending section 120 is located on the second surface side, and the through hole 130 is located between the first limiting plate 140 and the second limiting plate 150. When the optical fiber bundle 400 passes through the through hole 130, the first limiting plate 140 and the second limiting plate 150 will limit the movable position of the optical fiber bundle 400 to prevent the optical fiber bundle 400 from deviating too much from the surface of the anti-bending plate 100 and causing bending.

[0045] Considering that the optical fiber bundle 400 is movably arranged on the surface of the anti-bending sheet 100, in order to prevent the optical fiber bundle 400 from falling off the surface of the anti-bending sheet 100, this embodiment further provides a limiting groove 160, such as Figure 3As shown, a limiting groove 160 is provided on the surface of the first bending section 110 facing away from the first surface side and the surface of the second bending section 120 facing away from the second surface side. The length direction of the limiting groove 160 is set along the length direction of the anti-bending plate 100. When the optical fiber bundle 400 is laid on the surface of the anti-bending plate 100, it is directly located in the limiting groove 160. The limiting groove 160 is used to limit the position of the optical fiber bundle 400 in the width direction of the anti-bending plate 100 to prevent the optical fiber bundle 400 from falling off from the side of the anti-bending plate 100.

[0046] Example 2

[0047] This embodiment provides a fiber bundle 400 pulling mechanism, combined with Figures 4 to 5 As shown, it includes at least one anti-bending sheet 100 of the optical fiber bundle 400 provided in Example 1, and also includes a linear drive mechanism 300 and an optical fiber bundle 400; the linear drive mechanism 300 includes at least one traction component 310, and the traction component 310 is a linear drive mechanism 300 commonly used in the field of endoscopes, which can move along a fixed straight line direction, and the anti-bending sheet 100 and the traction component 310 are arranged in a one-to-one correspondence, and one traction component 310 is connected to one anti-bending sheet 100, and the end of the first bending section 110 of the anti-bending sheet 100 away from the second bending section 120 is fixedly connected to the traction component 310; the traction component 310 has a hole for the optical fiber bundle 400 to pass through. The optical fiber bundle 400 passes through the entrance fixing part 313, the outlet fixing part 314 and the through hole 130 in sequence. The outlet fixing part 314 is located on the second surface side of the anti-bending plate 100. After the optical fiber bundle 400 comes out from the outlet fixing part 314, it is laid on the second surface side of the first bending section 110, that is, the raised side surface of the first bending section 110, and then passes through the through hole 130 and is laid on the first surface side of the second bending section 120, that is, the raised side surface of the second bending section 120. When the limiting groove 160 is set on the surface of the first bending section 110 and the second bending section 120, the optical fiber bundle 400 is laid in the limiting groove 160.

[0048] When the optical fiber bundle 400 is used as a traction rope, it moves with the movement of the traction component 310. When the distance between the traction component 310 and the signal transceiver device changes, the optical fiber bundle 400 between the two will also bend or straighten accordingly. Due to the presence of the anti-bending sheet 100, the optical fiber bundle 400 will bend or straighten in a fixed direction, and the optical fiber bundle 400 will not change arbitrarily and be damaged.

[0049] In order to further fix the bending direction of the optical fiber bundle 400, when the first curved segment 110 moves with the traction component 310, a fixing member 200 is provided on the moving path of the first curved segment 110, and the fixing member 200 is located on the first surface side of the first curved segment 110. The fixing member 200 is directly fixed inside the handle of the endoscope. When the first curved segment 110 moves with the traction component 310, the first curved segment 110 will abut against the fixing member 200. As the traction component 310 continues to move, the fixing member 200 will cause the first curved segment 110 to gradually straighten, and the optical fiber bundle 400 laid on the surface of the first curved segment 110 will also straighten.

[0050] The fixing member 200 is provided so that the optical fiber bundle 400 is straightened while the first curved section 110 is also straightened, and the two are synchronized. Figure 4 and Figure 5 In the figure, the anti-bending sheet 100 of the upper traction component 310 is in a normal state, while the anti-bending sheet 100 of the lower traction component 310 is partially straightened under the action of the fixing member 200, and the optical fiber bundle 400 on the upper anti-bending sheet 100 is bent completely according to the bending direction of the anti-bending sheet 100; if the fixing member 200 is not set, in order to meet the change of the distance between the traction component 310 and the signal transceiver device and to protect the structure of the optical fiber bundle 400, when the distance is the shortest, the optical fiber bundle 400 cannot be laid completely according to the bending direction of the anti-bending sheet 100, and there will be some gaps or spaces. When the distance is the longest, the gaps or spaces will be eliminated. After the fixing member 200 is set, the optical fiber bundle 400 can be laid on the surface of the anti-bending sheet 100 all the time, and the optical fiber bundle 400 is bent strictly according to the bending direction of the anti-bending sheet 100, eliminating the instability caused by the existing gaps or spaces.

[0051] by Figure 4 and Figure 5 For example, there are two traction components 310, and both are connected with anti-bending plates 100. One anti-bending plate 100 is partially straightened under the action of the fixing component 200, and the other anti-bending plate 100 is not affected by the fixing component 200 and bends normally. The distance between the upper traction component 310 and the signal transceiver device is the shortest at this time. Therefore, in order to prevent the optical fiber bundle 400 from bending at will, the optical fiber bundle 400 is bent and laid on the surface of the anti-bending plate 100, bending in a fixed direction, and the bending arc is large enough so that no bending will occur. The distance between the lower traction component 310 and the signal transceiver device is the longest at this time. Therefore, the optical fiber bundle 400 needs to be stretched to match the lengthened distance. Here, the anti-bending plate 100 is also partially straightened, and the optical fiber bundle 400 is straightened in a fixed direction, which is convenient for bending in a fixed direction when the distance becomes shorter later, to prevent the optical fiber bundle 400 from bending at will and being damaged.

[0052] The fixing part 200 includes a sleeve with a fixed shaft, which is used to be fixedly connected to the inside of the endoscope handle. The sleeve is rotatably sleeved outside the fixed shaft. There is rolling friction between the sleeve and the first curved section 110, which reduces the friction between the two and provides smoothness of use of the entire mechanism.

[0053] In specific implementation, combined with Figure 4 and Figure 5 As shown, there are generally two traction components 310, which are connected by a transmission component 330. Under the drive of the transmission component 330, the two traction components 310 move synchronously in opposite directions. The traction component 310 includes a fixed base 311 and a moving block 312. The fixed base 311 is fixed inside the endoscope handle. The moving block 312 is slidingly arranged with the fixed base 311. The entrance fixing point 313 and the exit fixing point 314 are both located on the moving block 312. The optical fiber bundle 400 is fixedly connected to the moving block 312, and the anti-bending sheet 100 is fixedly connected to the moving block 312. The transmission component 330 is a gear structure. As the gear structure rotates, the moving block 312 drives the optical fiber bundle 400 to move on the fixed base 311.

[0054] Example 3

[0055] This embodiment provides an endoscope handle, including the optical fiber bundle 400 traction mechanism provided in Example 2.

[0056] Example 4

[0057] This embodiment provides an endoscope, including the endoscope handle provided in Example 3. The endoscope in the embodiment of the present application can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not impose any specific restrictions on the type of endoscope.

[0058] 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 and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical fiber bundle anti-bending sheet for a traction mechanism, used in an endoscope, characterized in that: The anti-bending piece (100) is a smoothly curved structure, and the anti-bending piece (100) comprises a first curved section (110) and a second curved section (120) connected in sequence. The first bending section (110) bends toward the first surface side of the anti-bending sheet (100), and the second bending section (120) bends toward the second surface side of the anti-bending sheet (100), and the first surface side and the second surface side are arranged opposite to each other; The anti-bending sheet (100) has a through hole (130) for the optical fiber bundle (400) to pass through, and the through hole (130) is partially located in the first bending section (110) and partially located in the second bending section (120); The optical fiber bundle (400) is fixed to the insertion portion, the traction component (310), and the signal transceiver device of the endoscope in sequence. The optical fiber bundle (400) is used to control the bending of the insertion portion under the drive of the traction component (310). The anti-bending sheet (100) is used to support the portion of the optical fiber bundle (400) fixed between the traction component (310) and the signal transceiver device.

2. The optical fiber bundle anti-bending sheet for a traction mechanism according to claim 1, characterized in that: The through hole (130) is a strip-shaped hole, and the length direction of the through hole (130) is arranged along the length direction of the anti-bending sheet (100).

3. The optical fiber bundle anti-bending sheet for a traction mechanism according to claim 1, characterized in that: A first limiting piece (140) is fixedly connected to the end of the through hole (130) close to the first curved section (110), the first limiting piece (140) is arranged tangentially to the first curved section (110), and the first limiting piece (140) is bent toward the first surface side; A second limiting piece (150) is fixedly connected to the end of the through hole (130) close to the second curved section (120), the second limiting piece (150) is arranged tangentially to the second curved section (120), and the second limiting piece (150) is bent toward the second surface side.

4. The optical fiber bundle anti-bending sheet for a traction mechanism according to claim 1, characterized in that: A surface of the first bending section (110) facing away from the first surface and a surface of the second bending section (120) facing away from the second surface are both provided with a limiting groove (160), and the length direction of the limiting groove (160) is arranged along the length direction of the anti-bending sheet (100).

5. An optical fiber bundle pulling mechanism, characterized in that: It comprises at least one optical fiber bundle anti-bending sheet (100) according to any one of claims 1 to 4, and further comprises a linear drive mechanism (300) and an optical fiber bundle (400); The linear drive mechanism (300) comprises at least one traction component (310), and an end of the first curved section (110) of the anti-bending sheet (100) away from the second curved section (120) is fixedly connected to the traction component (310); The traction component (310) has an entrance fixing portion (313) and an exit fixing portion (314) for the optical fiber bundle (400) to pass through, and the optical fiber bundle (400) passes through the entrance fixing portion (313), the exit fixing portion (314) and the through hole (130) in sequence, and the exit fixing portion (314) is located on the second surface side of the anti-bending sheet (100).

6. The optical fiber bundle pulling mechanism according to claim 5, characterized in that: The traction mechanism further comprises a fixing member (200), the fixing member (200) being used to be fixed inside the handle of the endoscope, the fixing member (200) being located on the first surface side of the first curved section (110) and on the moving path of the first curved section (110).

7. The optical fiber bundle pulling mechanism according to claim 6, characterized in that: The fixing member (200) comprises a fixed shaft and a sleeve, the fixed shaft being used for fixed connection with the interior of the endoscope handle, and the sleeve being rotatably sleeved outside the fixed shaft.

8. An endoscope handle, characterized in that: The optical fiber bundle pulling mechanism comprises the optical fiber bundle pulling mechanism according to any one of claims 5 to 7.

9. An endoscope, characterized in that: Including the endoscope handle according to claim 8.

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