Endoscope traction rope rear end fixing mechanism and endoscope assembly

Abstract

The embodiment of the utility model provides an endoscope traction rope rear end fixing mechanism and an endoscope assembly, and relates to the field of surgical instruments, the endoscope traction rope rear end fixing mechanism comprises a wheel handle and an adjusting shaft, the adjusting shaft is slidably connected with the wheel handle in the extension direction of a first axis, so that the adjusting shaft has a first position and a second position which are mutually switched, and when the adjusting shaft is located at the first position, the adjusting shaft is fixed to the wheel handle; the adjusting shaft and the wheel handle are relatively fixed in the direction around the first axis; when the adjusting shaft is located at the second position, the adjusting shaft and the wheel handle are rotatably connected in the direction around the first axis. The wheel handle is used for being rotatably matched with the handle shell, and the adjusting shaft is used for fixing the traction rope. The fixing mechanism is simple in structure and convenient to assemble, and the tightness of the traction rope is convenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of surgical instruments, and more specifically, to an endoscope traction rope rear end fixing mechanism and an endoscope assembly. Background Technology

[0002] One end of the endoscope traction rope is fixed to the insertion tube at the front of the endoscope, and the other end is fixed to the adjustment handwheel at the rear of the endoscope. The user controls the rotation of the adjustment handwheel to apply force to the traction rope, thereby causing the insertion tube to bend. During initial assembly, the length of the traction rope needs to be cut according to the bending angle of the endoscope. Then, the traction rope is fixed to the adjustment handwheel, and the fixed position of the traction rope and the adjustment handwheel is adjusted to regulate the traction force, i.e., the tension of the traction rope. Referring to the existing published patent CN110840381A, when turning the handle, if the tension of the traction rope is too loose, a larger angle of the handle needs to be turned to control the endoscope to reach the preset maximum bending angle. Conversely, if the tension of the traction rope is too tight, a smaller angle of the handle will produce a large bend. This is too sensitive and not conducive to the doctor's precise control of the bending angle during surgery. During prolonged use of the endoscope, the traction rope may undergo plastic deformation under long-term stretching. In this case, the fixed position of the traction rope and the adjustment handwheel also needs to be adjusted to regulate the traction force.

[0003] The inventors discovered during their research that existing traction rope fixing mechanisms have at least the following drawbacks:

[0004] In the existing technology, the methods of fixing the traction rope to the adjusting handwheel include knotting, crimping or welding a fixing block at the end of the traction rope. These methods are complex to assemble, time-consuming, inconvenient to adjust and operate, and inefficient. Utility Model Content

[0005] The purpose of this utility model includes, for example, providing an endoscope traction rope rear end fixing mechanism and an endoscope assembly, which can reduce assembly difficulty and improve assembly efficiency; it can also improve operational convenience, thereby facilitating the adjustment of the traction rope tension and improving adjustment efficiency.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, this utility model provides an endoscope traction rope rear end fixing mechanism, comprising:

[0008] A handle and an adjusting shaft, the adjusting shaft being slidably connected to the handle in the extension direction of a first axis, such that the adjusting shaft has a first position and a second position that can be switched between each other. When in the first position, the adjusting shaft and the handle are relatively fixed relative to each other in the direction about the first axis; when in the second position, the adjusting shaft and the handle are rotatably connected in the direction about the first axis.

[0009] The wheel handle is used to rotatably engage with the handle housing, and the adjusting shaft is used to secure the traction rope.

[0010] In an optional embodiment, the endoscope traction rope rear end fixing mechanism further includes an elastic element, which is connected to both the wheel handle and the adjusting shaft, and is used to give the adjusting shaft a tendency to switch from the second position to the first position.

[0011] Based on the above scheme, by setting up an elastic element, the adjusting shaft can always be kept in the first position, thereby improving the firmness of the fit between the adjusting shaft and the wheel handle. If the adjusting shaft is to be switched from the first position to the second position, the elastic force needs to be overcome, thereby reducing the probability of the adjusting shaft freely rotating and changing the tension of the traction rope.

[0012] In an optional embodiment, the handle is provided with a first limiting surface and the adjusting shaft is provided with a second limiting surface. The first limiting surface is used to abut against the second limiting surface when the adjusting shaft switches from the second position to the first position.

[0013] Based on the above scheme, when the elastic force of the elastic element causes the adjusting shaft to slide relative to the handle along the first axis, the first limiting surface and the second limiting surface can abut against each other, thereby limiting the sliding position of the adjusting shaft. At this time, the elastic element is in a compressed state, and the elastic element always provides the elastic force for the first limiting surface and the second limiting surface to abut against each other. The adjusting shaft is not easy to slide freely relative to the handle in the extension direction of the first axis, thereby improving the stability of the relative position of the adjusting shaft and the handle.

[0014] In an optional embodiment, the handle is provided with a first tooth and the adjusting shaft is provided with a second tooth. The first tooth is used to engage with the second tooth when the adjusting shaft is in the first position to restrict the rotation of the adjusting shaft relative to the handle.

[0015] Based on the above scheme, the engagement of the first and second teeth makes it difficult for the adjusting shaft and the wheel handle to rotate relative to each other, resulting in a more secure and reliable fit.

[0016] In an optional embodiment, the wheel handle is provided with a mounting hole, the adjusting shaft is inserted into the mounting hole, and the adjusting shaft and the mounting hole are slidably engaged in the extension direction of the first axis.

[0017] Based on the above solution, the adjusting shaft is located in the assembly hole. The positioning of the adjusting shaft is accurate through the assembly hole, and the sliding or rotating of the adjusting shaft relative to the wheel handle is more stable. It can also reduce the assembly difficulty and improve the assembly efficiency.

[0018] In an optional embodiment, the first tooth is disposed on the circumferential hole wall of the assembly hole, and the second tooth is disposed on the outer circumferential surface of the adjusting shaft.

[0019] Based on the above solution, the internal space of the assembly holes is made reasonable to improve the structural compactness and reduce the overall volume.

[0020] In an optional embodiment, an annular limiting protrusion is installed in the assembly hole, which divides the assembly hole into a first hole segment and a second hole segment located on both sides of the annular limiting protrusion. The first hole segment and the second hole segment are connected through a hollow channel of the annular limiting protrusion. The first tooth is provided on the second hole segment. The adjusting shaft includes a connected shaft body and a disc body. The shaft body passes through the first hole segment, the hollow channel, and the second hole segment. The second tooth is provided on the outer peripheral surface of the disc body. The disc body is used to be driven by the shaft body to be inserted into or removed from the second hole segment. The annular limiting protrusion is used to contact the disc body to limit the depth of the disc body embedded in the second hole segment.

[0021] Based on the above scheme, by cooperating with the annular limiting protrusion and the disc body, the position of the disc body in the second hole section can be controlled, preventing the disc body from retracting into the second hole section to a depth that is insufficient or too deep. This ensures that the second tooth on the disc body meshes tightly with the first tooth in the second hole section, and also allows the disc body to quickly leave the second hole section when the adjusting shaft is switched from the first position to the second position, thereby improving the adjustment efficiency.

[0022] In an optional embodiment, the adjusting shaft further includes an end cap connected to the shaft body, the end cap being slidably connected to the first hole segment in the extension direction of the first axis, and the elastic element being sleeved outside the shaft body and located between the end cap and the annular limiting protrusion.

[0023] Based on the above solution, by setting an end cap, it is possible to control the position of the elastic element and prevent excessive pressing when pressing the adjustment shaft to switch it from the first position to the second position.

[0024] In an optional embodiment, the adjusting shaft is provided with a fixing hole for threading a traction rope.

[0025] Based on the above scheme, the traction rope is threaded through the fixing hole, which facilitates the fixing of the traction rope and the adjusting shaft and improves the firmness of the connection between the traction rope and the adjusting shaft.

[0026] In an optional embodiment, the endoscope traction cable rear end fixing mechanism further includes a locking member mounted on the handle. The locking member is used to cooperate with the adjusting shaft to restrict the adjusting shaft from sliding relative to the handle in the extension direction of the first axis.

[0027] Based on the above scheme, after the position of the traction rope is adjusted, the adjusting shaft is locked to the wheel handle using a locking device, thereby improving the stability of the adjusting shaft position. The adjusting shaft is less likely to move relative to the wheel handle due to misoperation, thus affecting the tension of the traction rope.

[0028] Secondly, this utility model provides an endoscope assembly, the endoscope assembly comprising:

[0029] The traction cable includes a handle housing, a traction rope, and the end-end fixing mechanism for the endoscopic traction rope described in the foregoing embodiments. The handle is rotatably connected to the handle housing about a second axis, and one end of the traction rope is fixed to the adjusting shaft, which is used to rotate relative to the handle in the second position to adjust the tension of the traction rope.

[0030] The beneficial effects of this utility model embodiment include, for example:

[0031] In summary, the endoscope traction rope rear end fixing mechanism provided in this embodiment has an adjusting shaft and a wheel handle that are slidably connected, allowing the adjusting shaft to have a first position and a second position that can be switched between each other. In the first position, the adjusting shaft and the wheel handle are relatively fixed in the direction around the first axis; in the second position, the adjusting shaft and the wheel handle are rotatably connected in the direction around the first axis. In use, the rear end of the traction rope can be fixedly connected to the adjusting shaft. By rotating the adjusting shaft, the length of the traction rope wound on the adjusting shaft can be changed, thereby adjusting the tension of the traction rope. During operation, the adjusting shaft can first be placed in the second position, allowing it to rotate relative to the wheel handle, thus adjusting the tension of the traction rope. After the tension of the traction rope is adjusted, the adjusting shaft is moved from the second position to the first position. At this point, the adjusting shaft will not rotate relative to the wheel handle, and the tension of the traction rope will not easily change automatically, ensuring that the tension of the traction rope always meets the usage requirements. The use of a sliding and rotating combination to adjust the tension of the traction rope is convenient and quick to operate, with high adjustment efficiency; moreover, the overall structure is simple and easy to assemble. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the endoscope traction rope rear end fixing mechanism according to an embodiment of this application;

[0034] Figure 2 This is a schematic diagram from another perspective of the endoscope traction rope rear end fixing mechanism according to an embodiment of this application;

[0035] Figure 3 This is a cross-sectional schematic diagram of the endoscope traction rope rear end fixing mechanism according to an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the wheel handle according to an embodiment of this application;

[0037] Figure 5 This is a cross-sectional schematic diagram of the wheel handle according to an embodiment of this application;

[0038] Figure 6 This is a schematic diagram of the cooperation between the adjusting shaft and the traction rope in an embodiment of this application;

[0039] Figure 7 This is a schematic diagram of an endoscope assembly according to an embodiment of this application;

[0040] Figure 8 This is a partial schematic diagram of an endoscope assembly according to an embodiment of this application.

[0041] icon:

[0042] 100-Handle; 110-Body; 111-Rotating hole; 112-Assembly hole; 1121-First hole section; 1122-Second hole section; 113-Threading hole; 114-Guide groove; 115-Threaded hole; 120-Actuating body; 130-Annular limiting protrusion; 131-Hollow channel; 140-First tooth; 200-Adjusting shaft; 210-End cap; 220-Shaft body; 221-Fixing hole; 230-Disc body; 240-Second tooth; 300-Elastic element; 400-Locking element; 001-Handle housing; 011-Rotating shaft; 002-Traction rope. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0048] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0049] In the prior art, the traction rope 002 is fixed to the adjusting handwheel by methods such as knotting, crimping or welding a fixing block at the end of the traction rope 002. These methods are complex to assemble, time-consuming, inconvenient to adjust, and inefficient.

[0050] In view of this, the designers have provided a simple endoscope traction rope rear end fixing mechanism, which is easy to assemble and easy to adjust the tightness of the traction rope 002, thereby reducing assembly and usage costs.

[0051] Please refer to Figures 1-2 This embodiment provides an endoscope traction rope rear end fixing mechanism, including a handle 100 and an adjusting shaft 200. The adjusting shaft 200 and the handle 100 are slidably connected in the extension direction of a first axis, so that the adjusting shaft 200 has a first position and a second position that can be switched between each other. When in the first position, the adjusting shaft 200 and the handle 100 are relatively fixed in the direction about the first axis; when in the second position, the adjusting shaft 200 and the handle 100 are rotatably connected in the direction about the first axis. The handle 100 is used to rotatably engage with the handle housing 001, and the adjusting shaft 200 is used to fix the traction rope 002.

[0052] Based on the above solution, the working principle of the endoscope traction rope rear end fixing mechanism provided in this embodiment is as follows:

[0053] The handle 100 is rotatably mounted on the handle housing 001. One end of the traction rope 002 can pass through the handle 100 and be fixedly connected to the adjusting shaft 200. In the initial state, the adjusting shaft 200 is in the first position. At this time, the adjusting shaft 200 and the handle 100 do not rotate around the first axis, and the two are relatively fixed in the circumferential direction of the first axis. When it is necessary to adjust the tension of the traction rope 002, the adjusting shaft 200 is first switched from the first position to the second position. When the adjusting shaft 200 is in the second position, the adjusting shaft 200 can rotate relative to the handle 100. The rotation of the adjusting shaft 200 drives the traction rope 002 to move, changing the length of the traction rope 002 wound on the adjusting shaft 200, thereby adjusting the tension of the traction rope 002. After the tension of the traction rope 002 is adjusted, operate the adjusting shaft 200 to switch it back from the second position to the first position. At this time, the adjusting shaft 200 will not rotate relative to the wheel handle 100, the length of the traction rope 002 wound on the adjusting shaft 200 will not change, and the tension of the traction rope 002 will not easily change automatically. The tension of the traction rope 002 will always be maintained in the adjusted state, meeting the usage requirements. In this way, the tension of the traction rope 002 is adjusted by a combination of sliding and rotation, which is convenient and quick to operate, with high adjustment efficiency; and the overall structure is simple and easy to assemble.

[0054] The following embodiments illustrate the detailed structure of the endoscope traction rope rear end fixation mechanism of this application by way of example.

[0055] Please refer to Figures 1-3In this embodiment, optionally, the endoscope traction rope rear end fixing mechanism includes a handle 100, an adjusting shaft 200, an elastic element 300, and a locking element 400. The handle 100 is used to rotatably engage with the handle housing 001, and the adjusting shaft 200 is used to fix the traction rope 002. The adjusting shaft 200 and the handle 100 are slidably connected in the extension direction of the first axis, so that the adjusting shaft 200 has a first position and a second position that can be switched between each other. When the adjusting shaft 200 is in the first position, the adjusting shaft 200 and the handle 100 are relatively fixed in the direction about the first axis. When the adjusting shaft 200 is in the second position, the adjusting shaft 200 and the handle 100 are rotatably connected in the direction about the first axis, so that the length of the traction rope 002 wrapped around the adjusting shaft 200 can be changed by rotating the adjusting shaft 200, thereby adjusting the tightness of the traction rope 002. The elastic element 300 is connected to both the handle 100 and the adjusting shaft 200, and is used to give the adjusting shaft 200 a tendency to move from the second position to the first position. The locking element 400 is mounted on the handle 100 and is used to cooperate with the adjusting shaft 200 to restrict the sliding of the adjusting shaft 200 relative to the handle 100 in the extension direction of the first axis.

[0056] It should be understood that the tension of the traction rope 002 can be adjusted by rotating the adjusting shaft 200, which is convenient to operate. After adjustment, the adjusting shaft 200 is in the first position and will not rotate relative to the handle 100, so that the tension of the rope is always maintained at the set state, ensuring reliable use.

[0057] Please refer to Figures 4-5 In this embodiment, optionally, the handle 100 includes an integral body 110 and a lever body 120. The body 110 is generally plate-shaped, with a portion of its outer peripheral surface being partially cylindrical. The lever body 120 is disposed on the outer peripheral surface of the body 110. The body 110 has a rotating hole 111, which can be a circular through hole. A rotating shaft 011 can be inserted into the rotating hole 111, and the rotating shaft 011 can be mounted on the handle housing 001. Thus, the body 110 can rotate around the axis of the rotating shaft 011. The axis of the rotating shaft 011 can be referred to as the second axis, and it is arranged parallel to and spaced apart from the first axis. Simultaneously, the body 110 also has two mounting holes 112 arranged spaced apart from the rotating hole 111. The axes of both mounting holes 112 are parallel to the axis of the rotating hole 111, and these axes can be referred to as the first axis. Each mounting hole 112 is used to position an adjusting shaft 200, so that two adjusting shafts 200 can be configured on the wheel handle 100 to position two traction ropes 002.

[0058] Specifically, the assembly hole 112 can be configured as a cylindrical hole, having a first end and a second end in its axial direction. An annular limiting protrusion 130 is provided on the peripheral wall of the assembly hole 112, located between the first and second ends. The annular limiting protrusion 130 divides the assembly hole 112 into a first hole segment 1121 and a second hole segment 1122 located on both sides of it. The first hole segment 1121 is closer to the first end, and the second hole segment 1122 is closer to the second end. The diameters of the first hole segment 1121 and the second hole segment 1122 can be the same, and both are larger than the hollow channel 131 defined by the annular limiting protrusion 130. The hollow channel 131 can be a cylindrical hole, and it is coaxially arranged with the assembly hole 112. Due to the design of the annular limiting protrusion 130, the diameter of a portion of the assembly hole 112 is altered, and the annular limiting protrusion 130 can limit the sliding distance of the adjusting shaft 200 in the extension direction of the first axis. For ease of description, the annular side of the annular limiting protrusion 130 near the second end can be referred to as the first limiting surface.

[0059] Optionally, a first tooth 140 is provided on the circumferential hole wall of the second hole section 1122. The first tooth 140 can be composed of multiple teeth arranged at uniform intervals around the first axis.

[0060] Furthermore, in order to facilitate the connection between the traction rope 002 and the adjusting shaft 200 located in the assembly hole 112, a threading hole 113 is provided on the body 110, which communicates with the second hole section 1122 of the assembly hole 112. After the traction rope 002 passes through the threading hole 113, it enters the second hole section 1122 and is connected to the adjusting shaft 200.

[0061] In addition, in order to position the traction rope 002, a guide groove 114 can be provided on the outer peripheral surface of the body 110, and the traction rope 002 is embedded in the guide groove 114.

[0062] Please refer to Figure 6In this embodiment, optionally, the adjusting shaft 200 includes an end cap 210, a shaft body 220, and a disc body 230 connected in sequence. The cross-sectional contours of the end cap 210, shaft body 220, and disc body 230 can be circular, and the end cap 210 and shaft body 220 can be configured as an integral structure, which is convenient for processing and manufacturing, has high structural strength, and low cost. The top surface of the end cap 210 is provided with a slotted groove or a cross groove, etc. The outer peripheral surface of the disc body 230 is provided with a second tooth 240, which can be formed by multiple teeth evenly spaced around the axis of the disc body 230. The disc body 230 can be fixedly connected to the shaft body 220 by welding, screwing, or bonding. During assembly, the end cap 210 and shaft 220 can be fixed first. The end of shaft 220 away from end cap 210 is inserted into the first hole section 1121, and after passing through the middle shell channel, it is inserted into the second hole section 1122. The disc 230 is fixed to the end of shaft 220 located in the second hole section 1122. In this way, end cap 210 and shaft 220 can slide in the first hole section 1121, thereby driving disc 230 in and out of the second hole section 1122. When disc 230 enters the second hole section 1122, adjusting shaft 200 is in the first position, and the first tooth 140 and the second tooth 240 are engaged. At this time, adjusting shaft 200 cannot rotate relative to assembly hole 112. When disc 230 leaves the second hole section 1122, adjusting shaft 200 is in the second position, the first tooth 140 and the second tooth 240 are disengaged, and adjusting shaft 200 can rotate relative to assembly hole 112.

[0063] It is worth noting that the outer diameter of the disc body 230 is larger than the outer diameter of the hollow channel 131. After the disc body 230 enters the second hole section 1122, it can abut against the annular limiting protrusion 130, thereby limiting the depth of the disc body 230 entering the second hole section 1122. For ease of description, the end face of the disc body 230 near the end cap 210 can be called the second limiting surface. The second limiting surface can contact the first limiting surface, limiting the depth of the disc body 230 inserted into the second hole section 1122, and also preventing the adjusting shaft 200 from disengaging from the second end to the first end of the mounting hole 112. At the same time, the outer diameter of the end cap 210 is larger than the diameter of the hollow channel 131. The end cap 210 can abut against the annular positioning protrusion, limiting the position of the end cap 210 entering the first hole section 1121, and preventing the adjusting shaft 200 from disengaging from the first end to the second end of the mounting hole 112.

[0064] Optionally, the traction rope 002 can be fixed to the shaft 220 and located in the second hole section 1122. To facilitate the fixing of the traction rope 002, a fixing hole 221 is provided on the shaft 220, which extends radially through the shaft 220. The fixing hole 221 can be a strip-shaped hole, that is, the cross-section of the fixing hole 221 is approximately rectangular. The length of the cross-sectional profile of the fixing hole 221 extends along the first axis. The traction rope 002 can be passed through the fixing hole 221 for a more secure fixation.

[0065] Because the adjusting shaft 200 mates with the mounting hole 112, the internal space of the mounting hole 112 is utilized effectively, improving the compactness of the structure and reducing the overall size. Furthermore, by relying on the mounting hole 112 to restrict the position of the adjusting shaft 200 and guide its movement, the installation position of the adjusting shaft 200 is accurate, and its movement is stable and reliable.

[0066] Please refer to Figure 3 In this embodiment, optionally, the elastic element 300 can be set as a spring. The elastic element 300 is located in the first hole section 1121. The elastic element 300 is clamped between the annular limiting protrusion 130 and the end cap 210. The elastic element 300 is in a compressed state. The elastic element 300 causes the adjusting shaft 200 to have a tendency to move from the second end to the first end, so that the disc body 230 is always kept in the position embedded in the second hole section 1122, that is, the adjusting shaft 200 always has a tendency to switch from the second position to the first position. In other words, when the adjusting shaft 200 and the elastic element 300 are installed in the mounting hole 112, in the initial state, no external force is applied to the adjusting shaft 200. Under the action of the elastic element 300, the disc 230 is located in the second hole section 1122, the first limiting surface and the second limiting surface abut, the first tooth 140 and the second tooth 240 mesh, and the end cap 210 is located in the first hole section 1121 without protruding from the first hole section 1121. The overall structure is compact and small in size, that is, the adjusting shaft 200 is in the first position. When it is necessary to adjust the tension of the traction rope 002, use a screwdriver or other tool to engage with the slotted or Phillips head on the end cap 210, press the adjusting shaft 200, so that the disc 230 is disengaged from the second hole section 1122, and the first tooth 140 and the second tooth 240 are separated. At this time, the adjusting shaft 200 can be rotated to rotate the traction rope 002, and the length of the traction rope 002 wound on the shaft 220 can be adjusted, thereby realizing the adjustment of the tension of the traction rope 002.

[0067] It should be understood that when installing the elastic element 300, the elastic element 300 can be first sleeved on the outside of the shaft 220, and then the shaft 220 can be inserted into the first hole section 1121, the hollow channel 131 and the second hole section 1122. The elastic element 300 is clamped between the annular limiting protrusion 130 and the end cap 210.

[0068] Please refer to Figure 2 and Figure 4In this embodiment, optionally, the locking member 400 can be a screw. The locking member 400 is screwed to the wheel handle 100. The locking member 400 can extend into the first hole section 1121 when rotating, thereby contacting the outer peripheral surface of the end cap 210 located in the first hole section 1121, and thus locking the adjusting shaft 200. That is, in the initial state, when the adjusting shaft 200 is in the first position, tightening the locking member 400, and using the locking member 400 to abut against the end cap 210, the adjusting shaft 200 will not slide relative to the mounting hole 112 along the first axis. The position of the adjusting shaft 200 is stable and reliable, and the tension of the traction rope 002 is not easily changed due to misoperation, making it safe and reliable to use. When it is necessary to adjust the tension of the traction rope 002, loosen the locking member 400 and operate the adjusting shaft 200.

[0069] It should be understood that a threaded hole 115 communicating with the first hole segment 1121 can be provided on the body 110, and the locking member 400 is screwed into the threaded hole 115.

[0070] The endoscope traction rope rear end fixing mechanism provided in this embodiment has a traction rope 002 connected to a wheel handle 100 via an adjusting shaft 200. The adjusting shaft 200 can switch between a first position and a second position. When the adjusting shaft 200 is switched to the second position, it can rotate relative to the wheel handle 100, thereby adjusting the tension of the traction rope 002. After the tension of the traction rope 002 is adjusted, the adjusting shaft 200 is released. Under the action of the elastic element 300, the adjusting shaft 200 automatically switches from the second position to the first position, thus locking the position of the adjusting shaft 200. The tension of the traction rope 002 is adjusted by changing the position of the adjusting shaft 200, which is convenient and flexible to operate; and the overall structure is simple and easy to assemble.

[0071] Please refer to Figure 7 and Figure 8 This embodiment also provides an endoscope assembly, which includes a handle housing 001, a traction rope 002, and the aforementioned endoscope traction rope rear end fixing mechanism. The handle housing 001 can be a split housing, with a rotating shaft 011 installed inside. The body 110 of the handle 100 is rotatably connected to the rotating shaft 011, and the actuating body 120 of the handle 100 extends out of the handle housing 001. One end of the traction rope 002 is fixed to an adjusting shaft 200, which is used to rotate relative to the handle 100 in a second position to adjust the tension of the traction rope 002. When the tension of the traction rope 002 is adjusted, the adjusting shaft 200 is in a first position and will not rotate relative to the handle 100, thus determining the tension of the traction rope 002. When in use, force can be applied to the actuating body 120 to drive the main body 110 and the adjusting shaft 200 to rotate relative to the rotating shaft 011, thereby adjusting the curvature of the insertion tube front end through the traction rope 002, which is convenient to operate.

[0072] It should be understood that the endoscope assembly of this application includes two adjustment shafts 200, which can fix two traction ropes 002. In other embodiments, the number of traction ropes 002 is not limited to two, and can be selected as needed.

[0073] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An endoscope traction rope rear end fixing mechanism characterized by comprising: The endoscope traction rope rear end fixing mechanism comprises a handle (100) and an adjusting shaft (200), the adjusting shaft (200) is slidably connected with the handle (100) in the extension direction of a first axis, so that the adjusting shaft (200) has a first position and a second position which are switched with each other, when being in the first position, the adjusting shaft (200) is relatively fixed with the handle (100) in the direction around the first axis, when being in the second position, the adjusting shaft (200) is rotatably connected with the handle (100) in the direction around the first axis. The handle (100) is used for being rotatably matched with a handle shell (001), and the adjusting shaft (200) is used for fixing a traction rope (002).

2. The endoscope traction rope rear end fixing mechanism according to claim 1, wherein: the endoscope traction rope rear end fixing mechanism further comprises an elastic member (300), the elastic member (300) is connected with the handle (100) and the adjusting shaft (200) at the same time, and is used for making the adjusting shaft (200) have a movement tendency of switching from the second position to the first position.

3. The endoscope traction rope rear end fixing mechanism according to claim 2, wherein: a first limiting surface is arranged on the handle (100), a second limiting surface is arranged on the adjusting shaft (200), and the first limiting surface is used for abutting against the second limiting surface when the adjusting shaft (200) switches from the second position to the first position.

4. The endoscope traction rope rear end fixing mechanism according to claim 2, wherein: a first tooth portion (140) is arranged on the handle (100), a second tooth portion (240) is arranged on the adjusting shaft (200), and the first tooth portion (140) is used for being engaged with the second tooth portion (240) when the adjusting shaft (200) is in the first position, so as to limit the rotation of the adjusting shaft (200) relative to the handle (100).

5. The endoscope traction rope rear end fixing mechanism according to claim 4, wherein: an assembly hole (112) is arranged on the handle (100), the adjusting shaft (200) is inserted into the assembly hole (112), and the adjusting shaft (200) is slidably matched with the assembly hole (112) in the extension direction of the first axis.

6. The endoscope traction rope rear end fixing mechanism according to claim 5, wherein: the first tooth portion (140) is arranged on the circumferential hole wall of the assembly hole (112), and the second tooth portion (240) is arranged on the outer circumferential surface of the adjusting shaft (200).

7. The endoscope traction rope rear end fixing mechanism according to claim 6, wherein: ​ ​ ​ ​ ​ ​ An annular limiting protrusion (130) is installed in the assembly hole (112), which divides the assembly hole (112) into a first hole section (1121) and a second hole section (1122) on both sides of the annular limiting protrusion (130), and the first hole section (1121) and the second hole section (1122) are communicated through a hollow passage (131) of the annular limiting protrusion (130); the first tooth part (140) is arranged on the second hole section (1122); the adjusting shaft (200) comprises a shaft body (220) and a disc body (230) connected with each other, the shaft body (220) is arranged in the first hole section (1121), the hollow passage (131) and the second hole section (1122) at the same time, the second tooth part (240) is arranged on the outer circumferential surface of the disc body (230), and the disc body (230) is used for being embedded in or leaving the second hole section (1122) under the driving of the shaft body (220); the annular limiting protrusion (130) is used for contacting the disc body (230) to limit the depth of the disc body (230) embedded in the second hole section (1122).

8. The endoscope traction rope rear end fixing mechanism according to claim 7, characterized in that: The adjusting shaft (200) further comprises an end cap (210), the end cap (210) is connected with the shaft body (220), the end cap (210) is slidably connected with the first hole section (1121) in the extension direction of the first axis, and the elastic member (300) is sleeved outside the shaft body (220) and located between the end cap (210) and the annular limiting protrusion (130).

9. The endoscope traction rope rear end fixing mechanism according to any one of claims 1-8, characterized in that: A fixing hole for penetrating the traction rope is arranged on the adjusting shaft.

10. The endoscope traction rope rear end fixing mechanism according to any one of claims 1-8, characterized in that: The endoscope traction rope rear end fixing mechanism further comprises a locking member (400), the locking member (400) is installed on the handle (100), and the locking member (400) is used for cooperating with the adjusting shaft (200) to limit the sliding of the adjusting shaft (200) relative to the handle (100) in the extension direction of the first axis.

11. An endoscope assembly characterized by, The endoscope assembly comprises: a handle shell (001), a traction rope (002) and the endoscope traction rope rear end fixing mechanism according to any one of claims 1-10; the handle (100) is rotatably connected with the handle shell (001) around a second axis, one end of the traction rope (002) is fixed to the adjusting shaft (200), and the adjusting shaft (200) is used for rotating relative to the handle (100) when being in the second position to adjust the tightness of the traction rope (002).

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