Endoscope and operating handle therefor

Abstract

The application belongs to the technical field of medical devices, and particularly relates to an endoscope and an operating handle thereof. The operating handle comprises a shell, a lever and a locking mechanism. The lever is rotatably arranged in the shell. One of the shell and the lever is provided with a mounting portion and a first indicating element rotatably arranged in the mounting portion. The first indicating element is used for indicating the bending angle of an active bending section. The other of the shell and the lever is provided with a locking portion. The locking mechanism is movably arranged in the mounting portion and can be switched between a first position and a second position. When the locking mechanism is located at the first position, the locking mechanism is connected with the first indicating element to limit the rotation of the first indicating element relative to the mounting portion, and the locking mechanism is separated from the locking portion. When the locking mechanism is located at the second position, the locking mechanism is separated from the first indicating element, and the locking mechanism is connected with the locking portion to limit the rotation of the lever relative to the shell. The application can solve the problem of great calibration difficulty of the first indicating element such as a dial or a pointer of the operating handle.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to an endoscope and its operating handle. Background Technology

[0002] Endoscopes are typically used to diagnose and treat lesions inside a patient's body. An endoscope consists of a control handle and an insertion section. During operation, by controlling the control handle, the active bending section at the front end of the insertion section can be pulled by a traction cable to achieve bending motion, thereby changing the orientation of the front end of the insertion section.

[0003] In related technologies, a dial is rotatably mounted on the housing of the operating handle, and a pointer is mounted on the lever. The dial and pointer control the rotation angle of the lever to control the bending angle of the active bending section. The dial is calibrated and zeroed by rotating it. However, calibrating the dial in these related technologies is quite difficult. Summary of the Invention

[0004] The purpose of this application is to provide an endoscope and its operating handle that can solve the problem of the difficulty in calibrating the first indicator such as the dial or pointer of the current operating handle.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide an operating handle for an endoscope used to control the bending angle of an active bending segment. The handle includes a housing, a lever, and a locking mechanism. The lever is rotatably mounted on the housing and is used to drive the active bending segment to bend. One of the housing and the lever has a mounting portion and a first indicator rotatably mounted on the mounting portion. The first indicator indicates the bending angle of the active bending segment. The other of the housing and the lever has a locking portion. The locking mechanism is movably mounted on the mounting portion and can switch between a first position and a second position.

[0007] When the locking mechanism is in the first position, the locking mechanism is connected to the first indicator to restrict the rotation of the first indicator relative to the mounting part, and the locking mechanism is separated from the locking part; when the locking mechanism is in the second position, the locking mechanism is separated from the first indicator, and the locking mechanism is connected to the locking part to restrict the rotation of the lever relative to the housing.

[0008] Secondly, embodiments of this application also provide an endoscope, including the aforementioned operating handle.

[0009] In this embodiment, the locking mechanism can switch between a first position and a second position. When the first indicator needs to be calibrated, the locking mechanism can be positioned in the second position. At this time, the locking mechanism is separated from the first indicator, so the first indicator can rotate relative to the mounting part, and there is no resistance applied by the damping element between the first indicator and the mounting part. This reduces the force applied by the user to the first indicator during calibration. At the same time, the locking mechanism is connected to the locking part to restrict the rotation of the lever relative to the housing. That is, the lever does not rotate relative to the housing, thus avoiding calibration errors caused by lever rotation and reducing the calibration difficulty of the first indicator. After the first indicator is calibrated, the locking mechanism can be positioned in the first position. At this time, the locking mechanism is separated from the locking part, allowing the lever to rotate relative to the housing. At the same time, the locking mechanism is connected to the first indicator to restrict the rotation of the first indicator relative to the mounting part, thereby preventing the first indicator from rotating and ensuring that the first indicator accurately indicates the bending angle of the active bending section. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the operating handle of the locking mechanism disclosed in the embodiments of this application when it is in the first position;

[0011] Figure 2 For this application Figure 1 A sectional view of the middle section of the structure;

[0012] Figure 3 This is a schematic diagram of the rotating sleeve disclosed in an embodiment of this application;

[0013] Figure 4 This is a schematic diagram of the structure of the extrusion part disclosed in the embodiments of this application;

[0014] Figure 5 This is a schematic diagram of the structure of the mounting column disclosed in the embodiments of this application;

[0015] Figure 6 This is a schematic diagram of the structure of the limiting member disclosed in the embodiments of this application;

[0016] Figure 7 This is an assembly diagram of the rotating sleeve, extrusion member, and mounting column disclosed in the embodiments of this application;

[0017] Figure 8 This is a cross-sectional view of a portion of the structure of the operating handle of the locking mechanism disclosed in this application when it is in the first position.

[0018] Explanation of reference numerals in the attached figures:

[0019] 100. Housing; 101. Mounting part; 110. First indicator; 120. Mounting post; 121. Clamping protrusion; 122. First guide part; 123. Second guide part; 124. Limiting groove; 200. Lever; 201. Locking part; 210. Second indicator; 220. Actuating part; 230. Rotating shaft; 300. Locking mechanism; 310. Rotating sleeve; 311. Operating protrusion; 312. Second mating part; 320. Pressing part; 321. First mating part; 322. Pressing protrusion; 400. First damping pad; 500. Limiting part; 510. Main body; 520. Elastic arm; 521. Pressed protrusion; 522. Guide surface; 600. Snap ring. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] The endoscope and its operating handle provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0023] In related technologies, the dial and the housing of the operating handle are connected by a damping component. Therefore, the force applied by the user needs to be greater than the resistance brought by the damping component in order to rotate the dial. Furthermore, during the calibration and zeroing process of the dial, the lever is prone to rotation because it has no locking function or the user forgets to lock the lever. This increases the calibration error and thus increases the calibration difficulty.

[0024] like Figures 1 to 8As shown in the figure, this application discloses an operating handle for an endoscope, used to control the bending angle of the active bending section. It includes a housing 100, a lever 200, and a locking mechanism 300. The lever 200 is rotatably disposed on the housing 100 and is used to drive the active bending section to bend. One of the housing 100 and the lever 200 is provided with a mounting part 101 and a first indicator 110 rotatably disposed on the mounting part 101. The first indicator 110 is used to indicate the bending angle of the active bending section. The other of the housing 100 and the lever 200 is provided with a locking part 201.

[0025] Optionally, a second indicator 210 may be provided on the other of the housing 100 and the lever 200. The first indicator 110 and the second indicator 210 cooperate to indicate the bending angle of the active bending section. The first indicator 110 may be a dial or a pointer, etc., and the second indicator 210 may be a pointer or a dial, etc. The first indicator 110 is calibrated by aligning the pointer with the zero mark of the dial. It should be noted that the second indicator 210 may be a structural component that is included with the operating handle at the factory, or the operating handle may not include the second indicator 210 at the factory, in which case the second indicator 210 can be configured by the user.

[0026] The locking mechanism 300 is movably disposed on the mounting portion 101 and can switch between a first position and a second position. Optionally, the locking mechanism 300 can rotate or move relative to the mounting portion 101, etc. This application does not limit the mode of movement between the locking mechanism 300 and the mounting portion 101.

[0027] When the locking mechanism 300 is in the first position, the locking mechanism 300 is connected to the first indicator 110 to restrict the first indicator 110 from rotating relative to the mounting portion 101, and the locking mechanism 300 is separated from the locking portion 201; when the locking mechanism 300 is in the second position, the locking mechanism 300 is separated from the first indicator 110, and the locking mechanism 300 is connected to the locking portion 201 to restrict the lever 200 from rotating relative to the housing 100.

[0028] In this embodiment, the locking mechanism 300 can switch between a first position and a second position. When the first indicator 110 needs to be calibrated, the locking mechanism 300 can be positioned in the second position. At this time, the locking mechanism 300 is separated from the first indicator 110, so the first indicator 110 can rotate relative to the mounting part 101, and there is no resistance applied by the damping element between the first indicator 110 and the mounting part 101. This reduces the force applied by the user to the first indicator 110 during calibration. At the same time, the locking mechanism 300 is connected to the locking part 201 to restrict the rotation of the lever 200 relative to the housing 100. That is, the lever 200 cannot rotate relative to the housing 100, thus avoiding calibration errors caused by the rotation of the lever 200 and reducing the calibration difficulty of the first indicator 110. After the first indicator 110 is calibrated, the locking mechanism 300 can be positioned in the first position. At this position, the locking mechanism 300 is separated from the locking part 201, allowing the lever 200 to rotate relative to the housing 100. Simultaneously, the locking mechanism 300 is connected to the first indicator 110 to restrict its rotation relative to the mounting part 101, thereby preventing the first indicator 110 from rotating and ensuring that it accurately indicates the bending angle of the active bending section. Furthermore, after positioning the locking mechanism 300 in the second position, there is no need to additionally lock the lever 200, thus simplifying the operation of the handle.

[0029] In some embodiments, the locking mechanism 300 has a braking protrusion or a braking recess, and both the first indicator 110 and the locking part 201 have braking recesses or braking protrusions. When the locking mechanism 300 is in a first position, the braking protrusion / braking recess of the locking mechanism 300 engages with the braking recess / braking protrusion of the first indicator 110 to restrict the rotation of the first indicator 110 relative to the mounting part 101. When the locking mechanism 300 is in a second position, the braking protrusion / braking recess of the locking mechanism 300 engages with the braking recess / braking protrusion of the locking part 201 to restrict the rotation of the lever 200 relative to the housing 100. Optionally, the braking recess may be a brake hole, and the braking protrusion may be a columnar protrusion; alternatively, the braking recess may be a groove formed between two adjacent protrusions, and the braking protrusion may be a tooth.

[0030] In an optional embodiment, the mounting portion 101 includes a mounting post 120. A first indicator 110 and a locking mechanism 300 are rotatably mounted on the outside of the mounting post 120. The mounting post 120 has a clamping protrusion 121, and the first indicator 110 is located between the clamping protrusion 121 and the locking mechanism 300. Optionally, the mounting post 120 can be integrally formed with one of the housing 100 and the lever 200, or the mounting post 120 can be a separate structure from one of the housing 100 and the lever 200, forming two independent components. In this case, the mounting post 120 can be attached to one of the housing 100 and the lever 200 via a snap ring 600. Furthermore, the clamping protrusion 121 extends circumferentially along the mounting post 120 and can be annular, arc-shaped, etc. The shape of the clamping protrusion 121 is not limited in this application.

[0031] The locking mechanism 300 is rotatable relative to the mounting post 120 to switch between a first position and a second position. When the locking mechanism 300 is in the first position, the locking mechanism 300 and the clamping protrusion 121 clamp the first indicator 110 together. When the locking mechanism 300 is in the second position, the locking mechanism 300 and the clamping protrusion 121 release the first indicator 110.

[0032] The specific operation process is as follows: When the locking mechanism 300 rotates in the first clockwise direction, the locking mechanism 300 can drive the first indicator 110 to move in the direction close to the clamping protrusion 121, so that the first indicator 110 abuts against the clamping protrusion 121, thereby causing the locking mechanism 300 and the clamping protrusion 121 to clamp the first indicator 110 together; when the locking mechanism 300 rotates in the second clockwise direction opposite to the first clockwise direction, the locking mechanism 300 can drive the first indicator 110 to move in the direction away from the clamping protrusion 121, thereby causing the clamping protrusion 121 and the locking mechanism 300 to release the first indicator 110. As can be seen, this embodiment can limit the rotation of the first indicator 110 relative to the mounting portion 101 by providing a clamping protrusion 121 on the mounting post 120 and controlling the rotation of the locking mechanism 300, thus simplifying the structure of the operating handle. Furthermore, the locking mechanism 300 and the clamping protrusion 121 jointly clamp the first indicator 110, thereby increasing the braking force on the first indicator 110 and ensuring that the first indicator 110 does not rotate relative to the mounting portion 101 when the locking mechanism 300 is in the first position. In addition, this embodiment allows the locking mechanism 300 and the clamping protrusion 121 to clamp or release the first indicator 110 by controlling the rotation of the locking mechanism 300. Compared to controlling the movement of the locking mechanism 300, this embodiment allows the user to operate the locking mechanism 300 with less effort.

[0033] In some embodiments, the locking mechanism 300 may have a first force-applying surface arranged around its own central axis and spirally extending in a first direction, and the first indicator 110 may have a first force-receiving surface arranged around its own central axis and spirally extending in a first direction. When the locking mechanism 300 rotates in a first clockwise direction, the first force-applying surface presses against the first force-receiving surface, causing the first indicator 110 to move in a direction close to the clamping protrusion 121; when the locking mechanism 300 rotates in a second clockwise direction, the first force-applying surface releases the first force-receiving surface, causing the first indicator 110 to move in a direction away from the clamping protrusion 121; wherein, the first direction is the direction extending from the locking mechanism 300 to the first indicator 110. In this embodiment, the locking mechanism 300 can directly drive the first indicator 110 to move without the need to add an intermediate transition piece between the locking mechanism 300 and the first indicator 110, thereby simplifying the structure of the operating handle.

[0034] In one optional embodiment, the locking mechanism 300 includes a rotating sleeve 310 and a pressing member 320. Both the rotating sleeve 310 and the pressing member 320 are sleeved on the outside of the mounting post 120. The pressing member 320 is located between the rotating sleeve 310 and the first indicator 110. The mounting post 120 is provided with a first guide portion 122 extending along its own axis. The pressing member 320 is provided with a first mating portion 321. The first mating portion 321 is guided and mated with the first guide portion 122. The rotating sleeve 310 can rotate relative to the mounting post 120. When the rotating sleeve 310 rotates, the rotating sleeve 310 drives the pressing member 320 to move in a direction closer to or away from the first indicator 110, so as to clamp or release the first indicator 110. Optionally, the first guide portion 122 may be a guide groove or a guide protrusion, and the first mating portion 321 may be a guide protrusion or a guide groove; when the first guide portion 122 is a guide groove and extends along the axial direction of the mounting post 120, the guide groove may be connected to the limiting groove 124 described below.

[0035] The specific operation process is as follows: when the locking mechanism 300 rotates in the first clockwise direction, the rotating sleeve 310 can drive the pressing member 320 to move in the direction close to the first indicator 110, thereby causing the first indicator 110 to abut against the clamping protrusion 121, and thus the locking mechanism 300 and the clamping protrusion 121 jointly clamp the first indicator 110; when the locking mechanism 300 rotates in the second clockwise direction, the rotating sleeve 310 can drive the pressing member 320 to move in the direction away from the first indicator 110, thereby causing the locking mechanism 300 and the clamping protrusion 121 to release the first indicator 110. Furthermore, in this embodiment, the mounting post 120 is provided with a first guide portion 122, and the extruder 320 is provided with a first mating portion 321. During the process of the rotating sleeve 310 driving the first indicator 110 to move, the first guide portion 122 and the first mating portion 321 are guided and mated, which can prevent the rotating sleeve 310 from driving the extruder 320 to rotate, thereby preventing the extruder 320 from driving the first indicator 110 to rotate, thus reducing the calibration difficulty of the first indicator 110.

[0036] In one optional embodiment, the mounting post 120 is provided with a second guide portion 123, and the rotating sleeve 310 is provided with a second mating portion 312. At least one of the second guide portion 123 and the second mating portion 312 extends in a helical direction, and the second guide portion 123 and the second mating portion 312 are guidedly engaged. When the rotating sleeve 310 rotates relative to the mounting post 120, the rotating sleeve 310 moves in a direction toward or away from the first indicator 110. In this embodiment, the second guide portion 123 may be a guide groove or a guide protrusion, and the second mating portion 312 may be a guide protrusion or a guide groove. At least one of the second guide portion 123 and the second mating portion 312 extends in a helical direction. Therefore, when the rotating sleeve 310 rotates, it can move along the axial direction of the mounting post 120 to move toward or away from the first indicator 110, thereby driving the pressing member 320 to move toward or away from the first indicator 110. The structure of this embodiment allows the rotating sleeve 310 to move a large distance relative to the mounting post 120, thereby ensuring the clamping strength of the pressing member 320 and the clamping protrusion 121 on the first indicator 110. It should be noted that self-locking between the rotating sleeve 310 and the mounting post 120 can be achieved by adjusting the pitch of the second guide part 123 and / or the second mating part 312.

[0037] Of course, the first force-applying surface described above can also be provided on the rotating sleeve 310, and a second force-receiving surface with the same direction as the first force-receiving surface described above can be provided on the extruder 320. When the rotating sleeve 310 rotates relative to the mounting post 120 in a first clockwise direction, the first force-applying surface presses against the second force-receiving surface, so that the extruder 320 moves in a direction closer to the first indicator 110; when the rotating sleeve 310 rotates relative to the mounting post 120 in a second clockwise direction, the first force-applying surface releases the second force-receiving surface, so that the extruder 320 moves in a direction away from the first indicator 110.

[0038] In an optional embodiment, the operating handle further includes a first damping pad 400, which is sleeved on the outside of the mounting post 120 and located between the pressing member 320 and the first indicator 110. In this embodiment, the first damping pad 400 is provided between the pressing member 320 and the first indicator 110. Therefore, the pressing member 320 clamps the first indicator 110 together with the clamping protrusion 121 through the first damping pad 400. The provision of the first damping pad 400 increases the frictional resistance between the pressing member 320 and the first indicator 110, thereby better preventing the first indicator 110 from rotating relative to the mounting part 101.

[0039] In a further embodiment, the extruder 320 has a plurality of extrusion protrusions 322 spaced apart on the side facing the first damping pad 400, each of which can extrude the first damping pad 400. In this embodiment, the extruder 320 has a plurality of extrusion protrusions 322. When the extruder 320 clamps the first damping pad 400, the extrusion protrusions 322 will sink into the first damping pad 400. This not only increases the contact area between the extruder 320 and the first damping pad 400, but also limits the extrusion protrusions 322 and the first damping pad 400 in the circumferential direction, thereby further preventing the first indicator 110 from rotating relative to the mounting portion 101.

[0040] And / or, in an optional embodiment, the outer peripheral surface of the rotating sleeve 310 is provided with an operating protrusion 311, which drives the rotating sleeve 310 to rotate. The lever 200 includes a toggle part 220 for the user to toggle. When the locking mechanism 300 is in the first position, the operating protrusion 311 is located on the side of the housing 100 away from the toggle part 220. In this embodiment, the user can toggle the operating protrusion 311 to achieve the rotation of the rotating sleeve 310. When the locking mechanism 300 is in the first position, that is, when the locking mechanism 300 is connected to the first indicator 110, the operating protrusion 311 is located on the side of the housing 100 away from the toggle part 220, thus preventing the user from accidentally touching the operating protrusion 311 when toggle the toggle part 220 of the lever 200.

[0041] In an optional embodiment, the operating handle further includes a limiting member 500 disposed on the mounting portion 101. The limiting member 500 has an elastic arm 520. When the locking mechanism 300 is in a first position, the elastic arm 520 is separated from the locking portion 201. When the locking mechanism 300 is in a second position, the elastic arm 520 is at least partially deformed to connect with the locking portion 201 and restrict the lever 200 from rotating relative to the housing 100.

[0042] The specific operation process is as follows: When the locking mechanism 300 is in the second position, the locking mechanism 300 can compress the elastic arm 520, causing the elastic arm 520 to undergo elastic deformation and connect with the locking part 201. At this time, the locking mechanism 300 is indirectly connected to the locking part 201 through the limiting member 500, thereby restricting the rotation of the lever 200 relative to the housing 100. When the locking mechanism 300 is in the first position, the locking mechanism 300 releases the elastic arm 520, and the elastic arm 520 restores its elastic deformation, thereby separating from the locking part 201, so that the locking mechanism 300 is separated from the first indicator 110. It can be seen that in this embodiment, the elastic arm 520 restricts the rotation of the lever 200 relative to the housing 100. When the elastic arm 520 is connected to the locking part 201, the elastic arm 520 undergoes elastic deformation. The elastic arm 520 can be tightly connected to the locking part 201 through the elastic force generated by its own deformation, thereby improving the restriction effect on the lever 200 and the housing 100.

[0043] It should be noted that this embodiment can be combined with a technical solution where the mounting part 101 includes a mounting post 120, and the locking mechanism 300 is rotatably sleeved on the outside of the mounting post 120. When the locking mechanism 300 rotates in a second clockwise direction, the locking mechanism 300 drives the first indicator 110 away from the clamping protrusion 121. When the locking mechanism 300 rotates to the second position, the locking mechanism 300 presses the elastic arm 520. When the locking mechanism 300 includes a rotating sleeve 310, the rotating sleeve 310 is provided with a second mating part 312, and the mounting post 120 is provided with a second guide part 123, controlling the rotating sleeve 310 to rotate in a second clockwise direction can move the rotating sleeve 310 away from the first indicator 110. When the locking mechanism 300 rotates to the second position, the rotating sleeve 310 presses the elastic arm 520, so that the elastic arm 520 is connected to the locking part 201.

[0044] In addition to providing a second mating part 312 on the rotating sleeve 310 and a second guide part 123 on the mounting post 120, a second force-applying surface can also be provided on the rotating sleeve 310, and a third force-receiving surface can be provided on the elastic arm 520. Both the second force-applying surface and the third force-receiving surface are surfaces extending in a spiral direction. When the rotating sleeve 310 rotates in a second clockwise direction, the second force-applying surface presses against the third force-receiving surface, causing the elastic arm 520 to deform and connect with the locking part 201. When the rotating sleeve 310 rotates in a first clockwise direction, the second force-applying surface releases the third force-receiving surface, causing the elastic arm 520 to separate from the locking part 201. The spiral direction of the second force-applying surface and the third force-receiving surface can be set with reference to the first force-applying surface and the second force-receiving surface, which will not be described in detail in this embodiment.

[0045] In one optional embodiment, the number of elastic arms 520 may be one, or the number of elastic arms 520 may be at least two. The elastic arms 520 are arranged around the locking part 201, and at least a portion of the locking mechanism 300 is sleeved on the limiting member 500. When the locking mechanism 300 is in the second position, the locking mechanism 300 presses each elastic arm 520 so that each elastic arm 520 clamps the locking part 201. In this embodiment, the number of elastic arms 520 is at least two, and at least a portion of the locking part 201 is located between each elastic arm 520. When the locking mechanism 300 is in the second position, each elastic arm 520 clamps the locking part 201, which increases the connection area between the limiting member 500 and the locking part 201, thereby improving the restriction effect on the lever 200 and the housing 100.

[0046] Optionally, when the mounting part 101 is provided on the housing 100, the limiting member 500 is indirectly connected to the housing 100 through the mounting part 101, and the locking part 201 is provided on the lever 200. The locking part 201 can be the rotating shaft 230 of the lever 200. At this time, a part of the rotating shaft 230 is located between each elastic arm 520. When the elastic arm 520 of the limiting member 500 clamps the rotating shaft 230, the housing 100 and the lever 200 can be connected to restrict the rotation of the lever 200 relative to the housing 100. Of course, the locking part 201 can also be other structures on the lever 200, as long as the rotation of the lever 200 can be restricted when the elastic arm 520 is connected to the locking part 201. When the mounting part 101 is provided on the lever 200, the limiting member 500 is indirectly connected to the lever 200 through the mounting part 101. The locking part 201 is provided on the housing 100. The locking part 201 can be a protrusion structure on the housing 100. At least part of the protrusion structure is located between each elastic arm 520. When the elastic arm 520 of the limiting member 500 clamps the protrusion structure, the housing 100 and the lever 200 can be connected to restrict the lever 200 from rotating relative to the housing 100.

[0047] To prevent the limiting member 500 from rotating relative to the mounting portion 101, in an optional embodiment, each elastic arm 520 is provided with a pressure-bearing protrusion 521, and the mounting portion 101 is provided with at least two limiting grooves 124. The at least two limiting grooves 124 are distributed circumferentially along the mounting portion 101, and each limiting groove 124 extends axially along the mounting portion 101. When the locking mechanism 300 is in the second position, the locking mechanism 300 presses each pressure-bearing protrusion 521. Each pressure-bearing protrusion 521 is located in each limiting groove 124, and each pressure-bearing protrusion 521 is in upper-limiting engagement with each limiting groove 124 in the circumferential direction of the mounting portion 101.

[0048] Optionally, the limiting member 500 may further include a main body 510, with each elastic arm 520 disposed on the main body 510. A receiving space for accommodating the main body 510 and the elastic arms 520 may be provided within the mounting portion 101. One end of the pressure-bearing protrusion 521 is connected to the elastic arm 520, and the other end of the pressure-bearing protrusion 521 passes through the limiting groove 124 and is located outside the mounting portion 101, so that the locking mechanism 300 can press it. Alternatively, the main body 510 and the elastic arms 520 may be located outside the mounting portion 101. In this case, the limiting groove 124 may be a hollow groove, so that the pressure-bearing protrusion 521 is located within the limiting groove 124, and the elastic arms 520 can pass through the limiting groove 124 into the receiving space to clamp and lock the locking part 201.

[0049] In this embodiment, the elastic arm 520 is provided with a pressure-receiving protrusion 521, and the mounting part 101 is provided with at least two limiting grooves 124. When the locking mechanism 300 is in the second position, the locking mechanism 300 can squeeze the pressure-receiving protrusion 521 to deform the elastic arm 520. At this time, the pressure-receiving protrusion 521 of each elastic arm 520 is located in each limiting groove 124 to cooperate with each limiting groove 124 in the circumferential direction of the mounting part 101. This can prevent the limiting member 500 from rotating relative to the mounting part 101. Since the limiting member 500 is connected to the locking part 201, it can prevent the locking part 201 from rotating relative to the mounting part 101, thereby preventing the lever 200 from rotating relative to the housing 100.

[0050] In a further embodiment, at least one of the pressure-receiving protrusion 521 and the locking mechanism 300 is provided with a guide surface 522, through which the locking mechanism 300 can press the pressure-receiving protrusion 521 to deform the elastic arm 520.

[0051] In one optional embodiment, the elastic arm 520 includes a clamping portion for clamping the locking portion 201. At least one clamping portion of the elastic arm 520 is provided with a second damping pad facing the locking portion 201. The surface of the portion of the locking portion 201 that mates with the clamping portion is provided with a plurality of mating grooves at intervals. In this embodiment, the clamping portion of the elastic arm 520 is the portion of the elastic arm 520 that contacts the locking portion 201. The portion of the locking portion 201 that mates with the clamping portion is the portion of the locking portion 201 that contacts the clamping portion. A second damping pad is provided on the clamping portion, and mating grooves are provided on the portion of the locking portion 201 that mates with the clamping portion. Thus, when the elastic arm 520 clamps the locking portion 201, the second damping pad on the clamping portion will sink into the mating groove, thereby enabling the clamping portion and the locking portion 201 to be in a circumferentially limited engagement, further preventing the lever 200 from rotating relative to the housing 100.

[0052] This application also discloses an endoscope, including the operating handle described in any of the above embodiments. The endoscope referred to in this application may be a bronchoscope, pyeloscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. This application does not specifically limit the type of endoscope.

[0053] In this embodiment, the locking mechanism 300 can switch between a first position and a second position. When the first indicator 110 needs to be calibrated, the locking mechanism 300 can be positioned in the second position. At this time, the locking mechanism 300 is separated from the first indicator 110, so the first indicator 110 can rotate relative to the mounting part 101, and there is no resistance applied by the damping element between the first indicator 110 and the mounting part 101. This reduces the force applied by the user to the first indicator 110 during calibration. At the same time, the locking mechanism 300 is connected to the locking part 201 to restrict the rotation of the lever 200 relative to the housing 100. That is, the lever 200 does not rotate relative to the housing 100, thus avoiding calibration errors caused by the rotation of the lever 200, thereby reducing the calibration difficulty of the first indicator 110.

[0054] The foregoing embodiments of this application focus on describing the differences between various embodiments. As long as the different optimization features between embodiments are not contradictory, they can be combined to form better embodiments. For the sake of brevity, these differences will not be elaborated upon here. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. An operating handle for an endoscope, used to control the bending angle of the active bending section, characterized in that, The device includes a housing (100), a lever (200), and a locking mechanism (300). The lever (200) is rotatably mounted on the housing (100) and is used to drive the active bending section to bend. One of the housing (100) and the lever (200) is provided with a mounting portion (101) and a first indicator (110) rotatably mounted on the mounting portion (101). The first indicator (110) is used to indicate the bending angle of the active bending section. The other of the housing (100) and the lever (200) is provided with a locking portion (201). The locking mechanism (300) is movably disposed on the mounting portion (101) and can switch between a first position and a second position. When the locking mechanism (300) is in the first position, the locking mechanism (300) is connected to the first indicator (110) to restrict the first indicator (110) from rotating relative to the mounting portion (101), and the locking mechanism (300) is separated from the locking portion (201); when the locking mechanism (300) is in the second position, the locking mechanism (300) is separated from the first indicator (110), and the locking mechanism (300) is connected to the locking portion (201) to restrict the lever (200) from rotating relative to the housing (100).

2. The operating handle according to claim 1, characterized in that, The mounting part (101) includes a mounting post (120). The first indicator (110) and the locking mechanism (300) are rotatably sleeved on the outside of the mounting post (120). The mounting post (120) is provided with a clamping protrusion (121). The first indicator (110) is located between the clamping protrusion (121) and the locking mechanism (300). The locking mechanism (300) is rotatable relative to the mounting post (120) to switch between the first position and the second position. When the locking mechanism (300) is in the first position, the locking mechanism (300) and the clamping protrusion (121) clamp the first indicator (110); when the locking mechanism (300) is in the second position, the locking mechanism (300) and the clamping protrusion (121) release the first indicator (110).

3. The operating handle according to claim 2, characterized in that, The locking mechanism (300) includes a rotating sleeve (310) and a pressing member (320). Both the rotating sleeve (310) and the pressing member (320) are sleeved on the outside of the mounting post (120). The pressing member (320) is located between the rotating sleeve (310) and the first indicator (110). The mounting post (120) is provided with a first guide portion (122) extending along its own axis. The pressing member (320) is provided with a first mating portion (321). The first mating portion (321) and the first guide portion (122) are guided and mated. The rotating sleeve (310) is rotatable relative to the mounting post (120). When the rotating sleeve (310) rotates, the rotating sleeve (310) drives the pressing member (320) to move in a direction close to or away from the first indicator (110) to clamp or release the first indicator (110).

4. The operating handle according to claim 3, characterized in that, The mounting post (120) is provided with a second guide portion (123), and the rotating sleeve (310) is provided with a second mating portion (312). At least one of the second guide portion (123) and the second mating portion (312) extends in a spiral direction, and the second guide portion (123) and the second mating portion (312) are guided and engaged. When the rotating sleeve (310) rotates relative to the mounting post (120), the rotating sleeve (310) moves in a direction that is closer to or farther away from the first indicator (110).

5. The operating handle according to claim 3, characterized in that, The operating handle further includes a first damping pad (400), which is sleeved on the outside of the mounting post (120) and located between the pressing member (320) and the first indicator (110). The pressing member (320) has a plurality of pressing protrusions (322) spaced apart on the side facing the first damping pad (400), and each of the pressing protrusions (322) can press the first damping pad (400); and / or, The outer peripheral surface of the rotating sleeve (310) is provided with an operating protrusion (311), through which the rotating sleeve (310) can be driven to rotate. The lever (200) includes a toggle part (220) for the user to toggle. When the locking mechanism (300) is in the first position, the operating protrusion (311) is located on the side of the housing (100) away from the toggle part (220).

6. The operating handle according to any one of claims 1 to 5, characterized in that, The operating handle also includes a limiting member (500) disposed on the mounting portion (101), the limiting member (500) having an elastic arm (520). When the locking mechanism (300) is in the first position, the elastic arm (520) is separated from the locking part (201); when the locking mechanism (300) is in the second position, the elastic arm (520) is at least partially deformed to connect with the locking part (201) and restrict the lever (200) from rotating relative to the housing (100).

7. The operating handle according to claim 6, characterized in that, The number of elastic arms (520) is at least two, the elastic arms (520) are arranged around the locking part (201), and at least a portion of the locking mechanism (300) is sleeved on the limiting member (500). When the locking mechanism (300) is in the second position, the locking mechanism (300) presses each of the elastic arms (520) so that each of the elastic arms (520) clamps the locking part (201).

8. The operating handle according to claim 7, characterized in that, Each of the elastic arms (520) is provided with a pressure-receiving protrusion (521), and the mounting part (101) is provided with at least two limiting grooves (124). The at least two limiting grooves (124) are distributed circumferentially around the mounting part (101), and each limiting groove (124) extends axially around the mounting part (101). When the locking mechanism (300) is in the second position, the locking mechanism (300) presses each of the pressure-receiving protrusions (521), each of the pressure-receiving protrusions (521) is located in each of the limiting grooves (124), and each of the pressure-receiving protrusions (521) is in circumferential upper limit engagement with each of the limiting grooves (124) on the mounting part (101).

9. The operating handle according to claim 7, characterized in that, The elastic arm (520) includes a clamping portion for clamping the locking portion (201), and at least one of the clamping portions of the elastic arm (520) is provided with a second damping pad facing the locking portion (201). The surface of the portion of the locking portion (201) that mates with the clamping portion is provided with a plurality of mating grooves at intervals.

10. An endoscope, characterized in that, Includes the operating handle as described in any one of claims 1 to 9.

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