Endoscope hand wheel locking mechanism, endoscope handle and endoscope

Abstract

The present application relates to a hand wheel locking mechanism of an endoscope, an endoscope handle and an endoscope. The hand wheel locking mechanism is used for releasably locking an operation hand wheel for controlling bending on the endoscope handle, and comprises a locking rotating part and a locking part. One side of the locking rotating part is coaxially connected with the locking part. The locking part has a resilient structure. The locking part is arranged in the operation hand wheel and fixed on the endoscope handle. The locking rotating part is rotatably arranged on the endoscope handle. The rotation axis of the locking rotating part coincides with the rotation axis of the operation hand wheel. When the locking rotating part is driven to rotate, the locking rotating part causes the resilient structure to deform. The deformed resilient structure abuts against the operation hand wheel in the radial direction of the operation hand wheel. When the locking rotating part is driven to rotate reversely, the locking rotating part releases the action on the resilient structure, so that the resilient structure restores to the original state and unlocks the operation hand wheel. The present application simplifies the mechanical structure of the hand wheel locking and ensures the reliability and stability of the hand wheel locking.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an endoscope handwheel locking mechanism, an endoscope handle, and an endoscope. Background Technology

[0002] Endoscopes currently play a very important role in minimally invasive surgery. They can be divided into reusable endoscopes and disposable endoscopes. Both types of endoscopes need to be inserted into the human body. The prerequisite for reuse is that the endoscope is thoroughly cleaned and disinfected (including cleaning and sterilization). However, the endoscope contains multiple small and long complex channels, making cleaning and disinfection difficult. Therefore, the "consumable" nature of endoscopes has naturally become a trend in the development of endoscopes, which can effectively avoid cross-infection problems during surgery.

[0003] An endoscope typically consists of a handle and an insertion section. The insertion section includes a bending structure and a tip structure. The bending structure can swing under the control of the handle. The tip structure provides diagnostic feedback and generally integrates functions such as illumination, imaging, and instrument manipulation. The handle is equipped with an operating handwheel that controls the bending structure. When the handwheel is rotated forward and backward, it drives a steel wire to move back and forth, thus achieving the bending operation of the bending structure. The bending structure is elastic and prone to springing back when not locked, which can lead to unexpected springing during endoscope use, causing medical staff to misoperate and causing medical accidents. To address this, a handwheel locking device on the handle can controllably lock the operating handwheel. However, existing handwheel locking devices suffer from complex mechanical structures, unreliable locking, and inconvenient installation, and are not conducive to meeting the development requirements of endoscopes becoming "consumables."

[0004] Therefore, for those skilled in the art, designing a handwheel locking mechanism that is simple in structure, low in cost, easy to install, and has a reliable locking effect is a technical problem that urgently needs to be solved.

[0005] It should be noted that the information disclosed in the background section of this application is intended only to enhance the understanding of the general background of this application, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] In view of the above problems, the purpose of the present invention is to provide an endoscope handwheel locking mechanism, an endoscope handle and an endoscope, which aims to simplify the mechanical structure of the handwheel locking, simplify the installation process, and improve the reliability and stability of the handwheel locking.

[0007] To achieve the above objectives, the present invention provides a handwheel locking mechanism for an endoscope, used to releasably lock the operating handwheel for bending the endoscope handle. The handwheel locking mechanism includes a locking rotating part and a locking part. The locking rotating part is coaxially connected to the locking part along one side of its own rotation axis. The locking part has an elastic structure. The locking part is disposed within the operating handwheel and is used to fix it to the endoscope handle. The locking rotating part is rotatably disposed on the endoscope handle. The rotation axis of the locking rotating part coincides with the rotation axis of the operating handwheel.

[0008] When the locking rotating part is driven to rotate, the locking rotating part causes the locking elastic structure to deform, so that the deformed elastic structure abuts against the operating handwheel in the radial direction and locks the operating handwheel; when the locking rotating part is driven to rotate in the opposite direction, the locking rotating part releases the action on the elastic structure, so that the elastic structure returns to its original state and unlocks the operating handwheel.

[0009] In one embodiment, before the locking rotating part is driven to rotate, the locking part and the locking rotating part are mutually locked and limited;

[0010] When the elastic structure abuts against and locks the operating handwheel, the locking part and the locking rotating part are locked in the locked position; when the elastic structure moves away from and unlocks the operating handwheel, the locking part and the locking rotating part are locked in the released position; after the locking rotating part is driven to rotate, the locking rotating part moves and switches between the locked position and the released position.

[0011] In one embodiment, one of the locking rotating part and the locking part is provided with a loosening limiting part and a locking limiting part, and the other part is provided with at least one limiting engagement part, wherein the loosening limiting part and the locking limiting part are arranged at intervals on the same circumference;

[0012] When the elastic structure abuts against and locks the operating handwheel, the limiting engagement part engages with the locking limiting part to lock; when the elastic structure moves away from and unlocks the operating handwheel, the limiting engagement part engages with the releasing limiting part to lock; after the locking rotating part is driven to rotate, the limiting engagement part moves and switches between the locking limiting part and the releasing limiting part.

[0013] In one embodiment, the locking part includes a disc-shaped body, the disc surface of which is provided with a hollow groove, the hollow groove communicating with the outer peripheral surface of the disc-shaped body and forming an elastic flange, the elastic flange constituting the elastic structure;

[0014] The locking rotating part has an actuating boss on the side facing the disc-shaped body in the direction of the rotation axis. The actuating boss is at least partially inserted into the hollow groove. The hollow groove matches the actuating boss so as to control the deformation of the elastic flange through the cooperation of the actuating boss and the hollow groove.

[0015] In one embodiment, the inner side of the actuating boss is provided with a limiting protrusion, and the circumferential sidewall of the hollow groove is provided with a release limiting groove and a locking limiting groove at intervals.

[0016] When the elastic structure abuts against and locks the operating handwheel, the limiting protrusion engages with the locking limiting groove to lock; when the elastic structure moves away from and unlocks the operating handwheel, the limiting protrusion engages with the releasing limiting groove to lock; after the locking rotating part is driven to rotate, the limiting protrusion moves and switches between the locking limiting groove and the releasing limiting groove.

[0017] In one embodiment, along the locking direction from the release limiting groove to the locking limiting groove, the radial width of the hollow groove gradually decreases, and the shape and size of the actuating boss match the shape and size of the hollow groove.

[0018] In one embodiment, a transition area is provided on the circumferential sidewall of the hollow groove, and the release limiting groove and the locking limiting groove are smoothly connected through the transition area. The hollow groove also has a stop surface that forms an angle with the outer circumferential surface of the disc-shaped body. The stop surface is located on the side of the release limiting groove away from the locking limiting groove, and the elastic flange is located on the side of the locking limiting groove away from the release limiting groove.

[0019] In one embodiment, a drag flange is formed on a portion of the outer peripheral surface of the disc-shaped body, the drag flange contacting the operating handwheel to provide initial damping.

[0020] In one embodiment, there are multiple resistance flanges, which are evenly distributed circumferentially on the disc-shaped body.

[0021] In one embodiment, there are multiple elastic structures, which are evenly distributed in the circumferential direction of the locking portion.

[0022] In one embodiment, the locking rotating part includes a locking wheel and a locking sleeve that are coaxially arranged and connected, wherein the locking wheel is coaxially connected to the locking part;

[0023] When the locking sleeve is driven to rotate, it causes the locking wheel to rotate, which in turn causes the elastic structure to deform. When the locking sleeve is driven to rotate in the opposite direction, it causes the corresponding locking wheel to rotate in the opposite direction, which in turn releases the effect on the elastic structure.

[0024] In one embodiment, the locking rotating part includes a locking wrench having a connected annular portion and a wrench portion, the wrench portion extending radially outward from the outer peripheral surface of the annular portion, the annular portion being coaxially connected to the locking part;

[0025] When the wrench is driven to rotate, it causes the annular portion to rotate, which in turn causes the elastic structure to deform. When the wrench is driven to rotate in the opposite direction, it causes the corresponding annular portion to rotate in the opposite direction, which in turn releases the effect on the elastic structure.

[0026] In one embodiment, the handwheel locking mechanism further includes a pressure sleeve coaxially connected to the locking part. The pressure sleeve, the locking rotating part, and the locking part are all used to be sleeved on the mounting structure of the endoscope handle. The pressure sleeve is used to reduce the movement of the locking part relative to the mounting structure.

[0027] In one embodiment, the locking part is provided with a plurality of auxiliary positioning holes, the axis of the auxiliary positioning holes being parallel to the axis of the mounting structure, the plurality of auxiliary positioning holes being evenly arranged along the circumference of the locking part, and the pressure sleeve having a pin for inserting into the auxiliary positioning hole, the pin being arranged in a one-to-one correspondence with the auxiliary positioning hole.

[0028] To achieve the above objectives, the present invention also provides an endoscope handle, which is provided with an operating handwheel, wherein the operating handwheel is provided with any of the handwheel locking mechanisms described in the present invention.

[0029] In one embodiment, the operating handwheel has an inner cavity with one end open, the locking part is located in the inner cavity, the locking rotating part is partially located in the inner cavity, the endoscope handle is provided with a mounting structure, the mounting structure is at least partially located in the inner cavity, the locking part and the locking rotating part are both sleeved on the mounting structure and arranged along the axial direction of the mounting structure, and the elastic structure of the locking part, after deformation, abuts against the side wall of the inner cavity around the rotation axis to lock the operating handwheel.

[0030] In one embodiment, the operating handwheel is a first-direction operating handwheel for controlling the bending structure of the endoscope to bend in a first direction. The inner cavity of the first-direction operating handwheel opens away from the outer shell of the endoscope handle. The locking rotating part includes a locking wheel and a locking sleeve coaxially arranged and connected. The locking sleeve is disposed at the opening of the inner cavity to cover the inner cavity. The locking wheel is disposed in the inner cavity and sleeved on the mounting structure. The locking wheel is located on the side of the locking part away from the outer shell and is coaxially connected to the locking part.

[0031] In one embodiment, the operating handwheel is a second-direction operating handwheel for controlling the bending structure of the endoscope to bend in a second direction. The inner cavity of the second-direction operating handwheel opens toward the housing of the endoscope handle. The locking rotating part includes a locking wrench, which has an annular portion and a wrench portion connected together. The annular portion is located in the inner cavity and sleeved on the mounting structure. The wrench portion extends radially outward from the outer peripheral surface of the annular portion and extends through the opening to the outside of the second-direction operating handwheel. The annular portion is located on the side of the locking part closer to the housing and is coaxially connected to the locking part.

[0032] In one embodiment, the endoscope handle is provided with two operating handwheels, namely a first direction operating handwheel and a second direction operating handwheel. The first direction operating handwheel is used to control the bending structure of the endoscope to bend in a first direction, and the second direction operating handwheel is used to control the bending structure of the endoscope to bend in a second direction. The two operating handwheels are arranged coaxially in the axial direction of the operating handwheels, and each operating handwheel is releasably locked by a corresponding handwheel locking mechanism.

[0033] To achieve the above objectives, the present invention also provides an endoscope, including an endoscope handle, wherein the endoscope handle is provided with an operating handwheel, and the operating handwheel is provided with a handwheel locking mechanism of the endoscope as described in any one of the claims.

[0034] In summary, the endoscope handwheel locking mechanism provided by the present invention includes: a locking rotating part and a locking part. The locking rotating part is coaxially connected to the locking part along one side of its own rotation axis, and the locking part has an elastic structure. The locking part is disposed within the operating handwheel and fixed on the endoscope handle. The locking rotating part is rotatably disposed on the endoscope handle. The rotation axis of the locking rotating part coincides with the rotation axis of the operating handwheel. When the locking rotating part is driven to rotate, it causes the elastic structure to deform, so that the deformed elastic structure abuts against and locks the operating handwheel in the radial direction. When the locking rotating part is driven to rotate in the opposite direction, it releases its action on the elastic structure, so that the elastic structure returns to its original state and unlocks the operating handwheel.

[0035] With this configuration, when the operating handwheel needs to be locked, simply controlling the rotation of the locking rotating part directly controls the elastic deformation of the elastic structure on the locking part to achieve locking. This locking method has a simple mechanical structure and fewer parts, effectively controlling costs while ensuring the endoscope's functionality, and is conducive to meeting the development requirements of endoscope "consumables". The fewer parts also make installation easier. In particular, designing the locking part with an elastic structure has an unexpected effect: while allowing for lateral locking of the operating handwheel, it reduces the impact of axial installation errors, machining errors, and clearances on the locking effect, lowering the installation accuracy requirements of the handwheel locking mechanism and reducing production and assembly difficulty. Since the locking of the operating handwheel is mainly determined by the deformation of the elastic structure, it can reliably and stably lock the operating handwheel, with good locking effect and low risk of springback, further improving the reliability and safety of endoscope bending control.

[0036] Since the endoscope and endoscope handle provided in this application belong to the same inventive concept as the handwheel locking mechanism of the endoscope provided in this application, the endoscope and endoscope handle provided in this application have all the advantages of the handwheel locking mechanism of the endoscope provided in this application. Therefore, the beneficial effects of the endoscope and endoscope handle provided in this application will not be described in detail here. Attached Figure Description

[0037] Those skilled in the art will understand that the accompanying drawings are provided to better understand the invention and do not constitute any limitation on the scope of the invention. Wherein:

[0038] Figure 1 This is a schematic diagram of the handwheel locking mechanism of the endoscope according to Embodiment 1 of the present invention;

[0039] Figure 2 This is an exploded structural diagram of the handwheel locking mechanism of the endoscope according to Embodiment 1 of the present invention;

[0040] Figure 3 This is a schematic diagram of the first direction operation handwheel according to Embodiment 1 of the present invention;

[0041] Figure 4a This is a schematic diagram of the structure of the locking wheel facing the locking sleeve in Embodiment 1 of the present invention;

[0042] Figure 4b This is a schematic diagram of the structure of the locking wheel facing the locking part in Embodiment 1 of the present invention;

[0043] Figure 5 This is a schematic diagram of the structure of the locking part facing the locking wheel in Embodiment 1 of the present invention;

[0044] Figure 6 This is a schematic diagram of the pressure sleeve according to Embodiment 1 of the present invention;

[0045] Figure 7 This is a schematic diagram of the handwheel locking mechanism of the endoscope in Embodiment 2 of the present invention;

[0046] Figure 8 This is an exploded structural diagram of the handwheel locking mechanism of the endoscope in Embodiment 2 of the present invention;

[0047] Figure 9 This is a schematic diagram of the locking rotating part according to Embodiment 2 of the present invention;

[0048] Figure 10 This is a schematic diagram of the locking part according to Embodiment 2 of the present invention;

[0049] Figure 11 This is a schematic diagram of the pressure sleeve in Embodiment 2 of the present invention.

[0050] In the attached image:

[0051] 1-Outer shell; 2-First direction operating handwheel; 21-Locking surface of the first direction operating handwheel; 22-Inner cavity of the first direction operating handwheel; 3-First direction handwheel locking mechanism; 9-Second direction handwheel locking mechanism; 31, 91-Locking rotating part; 311-Locking wheel; 3111-External meshing tooth; 3112-Circular mounting hole; 3113-Actuating boss; a-Front end of the actuating boss; b-Rear end of the actuating boss; 31131-Limiting protrusion; 31132-Front end face; 31133-Inner side face; 31134-Rear end face; 31135-Outer arc surface; 312-Locking sleeve; 32, 92-Locking part; 32a-Disc-shaped body; 321-Irregular mounting hole; 321a-Straight 322-Elastic structure; 323-Hollowed groove; 3231-Loosening limit groove; 3232-Locking limit groove; 3233-Transition area; 3234-Stop surface; 3235-Locking area; 324-Resistance flange; 325-Auxiliary positioning hole; 4-Mounting structure; 41-Mounting shaft; 411-Irregular connecting part; 412-Circular connecting part; 413-Limiting connecting part; 5-Retaining ring; 6-Nut; 7-Pressure sleeve; 71-Pin; 72-Center hole; 72a-Straight edge; 72b-Circular arc; 8-Second direction operating handwheel; 11-Assembly kit; A-First-level step; B-Second-level step; 911-Locking wrench; 911a-Annular part; 911b-Wrench part; 911c-Inner hole. Detailed Implementation

[0052] To make the objectives, advantages, and features of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the embodiments of this invention. Furthermore, the structures shown in the drawings are often part of the actual structures. In particular, different figures may emphasize different aspects and may sometimes use different scales.

[0053] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects; the term “or” is generally used to mean “and / or”; the term “a number” is generally used to mean “at least one”; the term “at least two” is generally used to mean “two or more”; furthermore, the term “proximal” is generally the end closer to the operator, i.e., the distal end that does not enter the body; the term “distal” is generally the end closer to the patient, i.e., the end that enters the body; “one end” and “the other end” and “proximal” and “distal” generally refer to two corresponding parts, which include not only endpoints; the terms “installed,” “connected,” and “joined” should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. Furthermore, as used in this invention, the phrase "one element is disposed on another element" generally only indicates that there is a connection, coupling, cooperation, or transmission relationship between the two elements, and the connection, coupling, cooperation, or transmission between the two elements can be direct or indirect through an intermediate element. It should not be construed as indicating or implying a spatial positional relationship between the two elements, i.e., one element can be located arbitrarily inside, outside, above, below, or to one side of the other element, unless otherwise explicitly stated. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The core idea of ​​this invention is to provide an endoscope handwheel locking mechanism, an endoscope handle, and an endoscope itself, to solve the problems of complex mechanical structure, unreliable locking, and inconvenient installation faced by existing endoscope handwheel locking mechanisms. The endoscope involved in this invention is a disposable or reusable endoscope.

[0055] The endoscope involved in this invention includes an endoscope handle and an insertion portion (not shown) connected to the endoscope handle. The insertion portion is used to enter the body to perform corresponding operations, and generally includes an insertion tube, a curved structure, and a tip structure connected axially from proximal to distal. The endoscope handle is located at the proximal end of the endoscope to manipulate the insertion portion. Those skilled in the art can understand the structure and function of the insertion portion by referring to existing technology; this application does not provide further details.

[0056] The endoscope handle of this invention is equipped with at least one operating handwheel, and generally, two operating handwheels are provided. The operating handwheels are used for bending control of the bending structure. One operating handwheel can control the bending structure to swing up and down or left and right. When two operating handwheels are used, these two handwheels are a first-direction operating handwheel and a second-direction operating handwheel. The first-direction operating handwheel is used to control the bending structure to bend in a first direction, and the second-direction operating handwheel is used to control the bending structure to bend in a second direction. One of the first and second directions is the up-and-down direction, and the other is the left-and-right direction. The operating handwheel controlling the left-and-right swing is generally located on the side of the endoscope handle housing away from the operating handwheel controlling the up-and-down swing. Typically, when the operator holds the endoscope, the operating handwheels face upwards; in this case, the operating handwheel controlling the left-and-right swing is located above the operating handwheel controlling the up-and-down swing.

[0057] Regardless of the number of operating handwheels, each handwheel is equipped with a corresponding handwheel locking mechanism, which releasably locks the operating handwheel. For a single operating handwheel, its matching handwheel locking mechanism includes a locking rotating part and a locking part. The locking rotating part is coaxially connected to the locking part along one side of its own rotation axis, and the locking part has an elastic structure. The locking part is used to be housed within the operating handwheel and used to fix it to the endoscope handle. The locking rotating part is used to be rotatably mounted on the endoscope handle. The rotation axis of the locking rotating part coincides with the rotation axis of the operating handwheel. In actual use, when the locking rotating part is driven to rotate, it causes the elastic structure on the locking part to deform, so that the deformed elastic structure abuts against the operating handwheel in the radial direction. Conversely, when the locking rotating part is driven to rotate in the opposite direction, it releases its action on the elastic structure, allowing the elastic structure to return to its original shape and unlocking the operating handwheel.

[0058] It should be understood that when there are two operating handwheels, each handwheel is controlled by a corresponding handwheel locking mechanism in the manner described above. The locking principles of the two handwheels are basically the same, both utilizing the elastic deformation of the elastic structure on the locking part to prevent the handwheel from rotating in the radial direction, thereby locking the handwheel. It should be noted that the structures of the locking rotating parts corresponding to the two handwheels can be the same or different.

[0059] The following description refers to the accompanying drawings. It should be noted that, in the following description, the operating handwheels controlling bending in different directions are defined as the first-direction operating handwheel and the second-direction operating handwheel. The first-direction operating handwheel and the second-direction operating handwheel described herein both refer to a single operating handwheel, and each single operating handwheel is equipped with a corresponding handwheel locking mechanism. For ease of description, the handwheel locking mechanism corresponding to the first-direction operating handwheel is defined as the first-direction handwheel locking mechanism, and the handwheel locking mechanism corresponding to the second-direction operating handwheel is defined as the second-direction handwheel locking mechanism.

[0060] <Example 1>

[0061] Reference Figures 1-2 The endoscope handle provided in Embodiment 1 of the present invention includes a housing 1, a first-direction operation handwheel 2 disposed on the housing 1, and a first-direction handwheel locking mechanism 3. The first-direction operation handwheel 2 may be a shell-shaped structure, but is not limited thereto. The first-direction operation handwheel 2 can control the bending structure to bend (i.e., swing) in a first direction, such as the left-right direction or the up-down direction. In the following description, the left-right bending of the bending structure controlled by the first-direction operation handwheel 2 is illustrated as an example.

[0062] like Figure 3 As shown, in one embodiment, the first direction operation handwheel 2 is provided with direction indicators ΔL and ΔR, where ΔL represents the control direction of turning to the left and ΔR represents the control direction of turning to the right. An arrow indicates the rotation direction of the first direction operation handwheel 2. Generally, from... Figure 3 From an overhead view, rotating counterclockwise causes the curve to bend to the left, and rotating clockwise causes the curve to bend to the right.

[0063] Furthermore, both the first-direction handwheel locking mechanism 3 and the first-direction operating handwheel 2 are located on the exterior of the housing 1. The first-direction handwheel locking mechanism 3 is used to releasably lock the first-direction operating handwheel 2. Once the first-direction operating handwheel 2 is locked by the first-direction handwheel locking mechanism 3, the bent structure is maintained in its current state and will not easily spring back. The first-direction handwheel locking mechanism 3 includes a locking rotating part 31 and a locking part 32, with the locking rotating part 31 coaxially connected to the locking part 32 along one side of its own rotation axis.

[0064] The locking rotating part 31 is rotatably mounted on the outer casing 1, and can rotate about its own rotation axis. Furthermore, the rotation axis of the locking rotating part 31 coincides with the rotation axis of the first-direction operating handwheel 2, to achieve a compact structural layout and avoid increasing the size of the endoscope handle. In this embodiment, the outer casing 1 is provided with a mounting structure 4. Both the locking rotating part 31 and the first-direction operating handwheel 2 rotate around the mounting structure 4. The locking part 32 is sleeved on the mounting structure 4 and is limited to a position relative to the mounting structure 4. The locking rotating part 31 is also sleeved on the mounting structure 4 and is limited to a position relative to the axial direction of the mounting structure 4. The locking rotating part 31 and the locking part 32 are arranged along the axial direction of the mounting structure 4. It is understood that the mounting structure 4 remains fixed, the locking rotating part 31 can only rotate relative to the mounting structure 4, while the locking part 32 can neither rotate nor move relative to the mounting structure 4.

[0065] like Figure 1 and Figure 2 As shown, the locking part 32 is located inside the first direction operating handwheel 2 and is fixedly mounted on the housing 1. Furthermore, the locking part 32 is located on one side of the locking rotating part 31, such as above, below, to the left, or to the right. Normally, when the operator holds the endoscope, both the first direction operating handwheel 2 and the first direction handwheel locking mechanism 3 face upwards. In this case, it can be considered that the locking part 32 is located below the locking rotating part 31, but it is not limited to this.

[0066] The locking part 32 is configured to have a resilient structure 322 (see Figure 5 The first direction operating handwheel 2 is locked by the elastic deformation of the elastic structure 322. This method has a simple structure, can reduce the number of parts, simplify the installation process, reduce costs, and the locking effect is reliable and stable.

[0067] More specifically, when the locking rotating part 31 is driven to rotate under force, the locking rotating part 31 can cause the elastic structure 322 on the locking part 32 to deform, thereby causing the deformed elastic structure 322 to abut against the first direction operating handwheel 2 in the radial direction and lock the first direction operating handwheel 2. This allows the first direction operating handwheel 2 to maintain the corresponding bending structure of the endoscope in its current state and prevent it from easily springing back. Conversely, when the locking rotating part 31 is driven to rotate in the opposite direction under force, the locking rotating part 31 releases its action on the elastic structure 322, allowing the elastic structure 322 to return to its original state and unlock the first direction operating handwheel 2.

[0068] By adopting the above structural configuration, the endoscope can be locked in the first direction using the simple first-direction handwheel locking mechanism 3. This not only simplifies the mechanical structure of the handwheel locking mechanism, reduces the number of parts, and makes installation easier, but also effectively controls costs while ensuring the endoscope's functionality, thus meeting the development requirements of endoscope "consumableization". In particular, the locking in the radial direction is less affected by axial installation errors, machining errors, and gaps, thereby reducing the installation accuracy requirements of the handwheel locking mechanism and lowering the difficulty of its production and assembly. Furthermore, since the locking of the operating handwheel is mainly determined by the deformation of the elastic structure 322, it can reliably and stably lock the operating handwheel, resulting in a good locking effect and less rebound, further improving the reliability and safety of endoscope bending control.

[0069] Preferably, at least some of the structural components in the first direction handwheel locking mechanism 3 are made of plastic, which can further reduce costs.

[0070] like Figure 3 As shown, the first-direction operating handwheel 2 has an inner cavity 22 with one end open. A locking part 32 is located within the inner cavity 22, and a locking rotating part 31 is partially located within the inner cavity 22. The sidewall of the inner cavity 22 surrounding the rotation axis of the first-direction operating handwheel 2 forms a locking surface 21. At this time, the elastic structure 322 of the locking part 32 elastically deforms and abuts against the locking surface 21, thereby locking the first-direction operating handwheel 2. When the elastic structure 322 of the locking part 32 returns to its original state, it moves away from the locking surface 21, thereby unlocking the first-direction operating handwheel 2. Furthermore, the mounting structure 4 is at least partially located within the inner cavity 22 of the first-direction operating handwheel 2.

[0071] In this embodiment, since the second direction operating handwheel 8 described in Embodiment 2 needs to be further installed below the first direction operating handwheel 2, the first direction operating handwheel 2 is configured with its inner cavity 22 facing away from the outer casing 1, so that the inner cavity 22 of the first direction operating handwheel 2 has a bottom surface and an opening facing the bottom surface, with the opening facing upwards. At this time, the mounting structure 4 passes through the bottom of the inner cavity 22 of the first direction operating handwheel and enters the inner cavity 22 of the first direction operating handwheel. Furthermore, a portion of the locking rotating part 31 is provided at the opening of the inner cavity 22 of the first direction operating handwheel to cover the inner cavity 22 and prevent the internal structure from being exposed. The operator only needs to manipulate the portion of the locking rotating part 31 that exposes the inner cavity 22 of the first direction operating handwheel to move the locking rotating part 31. It should be noted that the inner cavity 22 of the first direction operating handwheel 2 can be covered or not, depending on the actual needs.

[0072] In some embodiments, the locking rotating part 31 includes a locking wheel 311 and a locking sleeve 312 coaxially arranged and connected. The locking sleeve 312 is used to directly drive the locking wheel 311 to rotate, and the locking wheel 311 is used to directly control the elastic structure 322 of the locking part 32. The locking wheel 311 is located in the inner cavity 22 of the first-direction operating handwheel 2 and is sleeved on the mounting structure 4. The locking wheel 311 can rotate relative to the mounting structure 4. Furthermore, the locking wheel 311 is located on the side of the locking part 32 away from the outer casing 1 and is coaxially connected to the locking part 32; that is, the locking part 32 is located between the locking wheel 311 and the bottom surface of the inner cavity 22. Preferably, the locking sleeve 312 is disposed at the opening of the inner cavity 22 to cover the inner cavity 22. With this configuration, the locking sleeve 312 can directly receive force to drive the locking wheel 311 to rotate synchronously around the rotation axis. In this embodiment, the locking sleeve 312, when driven to rotate under force, causes the locking wheel 311 to rotate, which in turn causes the elastic structure 322 on the locking part 32 to deform. Conversely, when the locking sleeve 312, when driven to rotate in the opposite direction under force, causes the locking wheel 311 to rotate in the corresponding opposite direction, which in turn releases the effect on the elastic structure 322. Of course, in other embodiments, the locking sleeve 312 can be omitted, allowing the locking wheel 311 to rotate directly under force and control the elastic deformation of the locking part 32. Furthermore, after removing the locking sleeve 312, the locking wheel 311 itself can cover the inner cavity 22 of the first-direction operating handwheel 2.

[0073] The shape of the locking wheel 311 is not limited, as long as it can rotate on the mounting structure 4. Similarly, the shape of the locking sleeve 312 is not limited, as long as it can drive the locking wheel 311 to rotate and cover the inner cavity 22 of the first-direction operating handwheel 2. In the embodiment shown in the figure, the locking sleeve 312 is configured in a knob-like shape for easy operation by the operator.

[0074] Considering practical needs, the locking sleeve 312 is also used to determine the initial position of the first-direction handwheel locking mechanism 3. This initial position indicates the endoscope's shipping status, ensuring product consistency. For example, the locking sleeve 312 determines its initial position based on an unlocking indicator. Figure 2 As shown, an unlocking mark ΔF can be provided on the locking sleeve 312. If the position of the unlocking mark on the locking sleeve 312 is aligned with the position of the unlocking mark on the locking wrench 911 in Embodiment 2, it indicates that the first direction handwheel locking mechanism 3 has been assembled in place. The arrow in ΔF points to the unlocking direction. Generally, the unlocking direction is clockwise. After rotating the locking wheel 311 clockwise, the first direction operating handwheel 2 can be released.

[0075] The locking sleeve 312 and the locking wheel 311 are connected in a suitable manner to transmit motion. Optionally, the locking sleeve 312 and the locking wheel 311 are engaged and arranged coaxially. The locking sleeve 312 and the locking wheel 311 are internally engaged; for example, the inner circumferential side of the locking sleeve 312 engages with the outer circumferential side of the locking wheel 311, or the outer circumferential side of the locking sleeve 312 engages with the inner circumferential side of the locking wheel 311. Preferably, the inner circumferential side of the locking sleeve 312 engages with the outer circumferential side of the locking wheel 311. This structure is easier to implement, reducing manufacturing difficulty and cost. Figure 4a As shown, the locking wheel 311 has external meshing teeth 3111, which can engage with the internal meshing teeth of the locking sleeve 312. However, the connection between the locking wheel 311 and the locking sleeve 312 includes, but is not limited to, the meshing connection described above; for example, a threaded connection can also be used.

[0076] In this embodiment, the locking part 32, locking sleeve 312, locking wheel 311, and first-direction operating handwheel 2 are arranged coaxially. For example, the locking sleeve 312, locking wheel 311, and locking part 32 are arranged from top to bottom. Both the locking wheel 311 and locking part 32 are installed in the inner cavity 22 of the first-direction operating handwheel 2, and the locking sleeve 312 covers the inner cavity 22. The locking part 32 only needs to lock the first-direction operating handwheel 2 radially. This structure is simple, easy to install and operate, has a good locking effect, and provides reliable and stable locking. During assembly, the assembly position is determined according to the unlocking mark on the locking sleeve 312. After assembly, the installation of the first-direction handwheel locking mechanism 3 is completed. In the following description, the locking sleeve 312 and locking wheel 311 are used as illustrative examples.

[0077] like Figures 1 to 3 As shown, the mounting structure 4 includes a mounting shaft 41, which extends from the housing 1 into the inner cavity 22 of the first direction operating handwheel 2. The first direction operating handwheel 2 and the first direction handwheel locking mechanism 3 are both arranged around the mounting shaft 41.

[0078] In one example, such as Figure 3 and Figure 5 As shown, the mounting shaft 41 has a non-circular connecting portion 411, and the locking portion 32 has a non-circular mounting hole 321. The non-circular mounting hole 321 mates with the non-circular connecting portion 411 to prevent the locking portion 32 from moving relative to the mounting shaft 41. The non-circular mounting hole 321 is, for example, but not limited to, a square hole. A square hole is used as an example. Figure 5 As shown, the irregular mounting hole 321 has a straight edge 321a, and adjacent straight edges 321a are connected by a rounded transition, so that the irregular mounting hole 321 and the irregular connecting part 411 fit tightly together, preventing the locking part 32 from moving relative to the mounting shaft 41.

[0079] In one example, such as Figure 3 and Figure 4a As shown, the mounting shaft 41 has a circular connecting portion 412, and the locking wheel 311 has a circular mounting hole 3112. The circular mounting hole 3112 cooperates with the circular connecting portion 412 in such a way that the locking wheel 311 is allowed to rotate relative to the mounting shaft 41.

[0080] In one example, such as Figure 3 As shown, the mounting shaft 41 has a limiting connection portion 413 for mounting a retaining ring 5 that restricts the axial movement of the locking wheel 311. The retaining ring 5 is sleeved on the limiting connection portion 413. The retaining ring 5 can be directly glued or welded to the limiting connection portion 413, or indirectly fixed to the limiting connection portion 413 by a nut 6. In the illustrated embodiment, the limiting connection portion 413 has external threads, and both the retaining ring 5 and the nut 6 are sleeved on the limiting connection portion 413, and the nut 6 is threadedly locked to the limiting connection portion 413. The retaining ring 5 is located on the side of the locking wheel 311 away from the locking portion 32, and the nut 6 presses against the retaining ring 5. The retaining ring 5 can prevent the locking wheel 311 from moving away from the locking portion 32 (e.g., upward), and the nut 6 can restrict the retaining ring 5 from moving away from the locking portion 32 (e.g., upward).

[0081] Preferably, a step is formed between the circular connecting portion 412 and the irregular connecting portion 411, which can restrict the movement of the locking wheel 311 along the axis of the mounting shaft 41 towards the locking portion 32 (e.g., downward). Preferably, a step is formed between the circular connecting portion 412 and the limiting connecting portion 413, which can restrict the movement of the retaining ring 5 along the axis of the mounting shaft 41 towards the locking wheel 311.

[0082] It should be understood that when the locking rotating part 31 is not operated, the locking wheel 311 and the locking part 32 remain in a limited locking state. Since the locking part 32 cannot rotate, the rotation of the first direction operating handwheel 2 will not drive the locking rotating part 31 to rotate. Therefore, the first direction handwheel locking mechanism 3 has a self-locking function. The first direction operating handwheel 2 can only be locked or released when the locking rotating part 31 is directly subjected to force, and the rotation of the first direction operating handwheel 2 will not affect the first direction handwheel locking mechanism 3. Therefore, preferably, before the locking rotating part 31 is driven to rotate, the locking part 32 and the locking rotating part 31 are mutually limited and locked. After the limited locking, the locking rotating part 31 cannot rotate relative to the locking part 32. Since the locking part 32 itself cannot rotate, the reliability and stability of the handwheel locking can be improved. It should be understood that when the elastic structure 322 of the locking part 32 locks the operating handwheel, the locking part 32 and the locking rotating part 31 are locked in the locked position; while when the elastic structure 322 of the locking part 32 unlocks the operating handwheel, the locking part 32 and the locking rotating part 31 are locked in the released position. Furthermore, when a state switch is required, after the locking rotating part 31 is rotated, it rotates between the locked and released positions, and correspondingly, the elastic structure 322 of the locking part 32 switches between deformed and undeformed states.

[0083] In this embodiment, before the locking sleeve 312 is driven to rotate, the locking part 32 and the locking wheel 311 are mutually locked and limited. That is, when the elastic structure 322 of the locking part 32 abuts against the locking first direction operation handwheel 2, the locking part 32 and the locking wheel 311 are locked and limited in the locking position; and when the elastic structure 322 of the locking part 32 leaves the unlocking first direction operation handwheel 2, the locking part 32 and the locking wheel 311 are locked and limited in the unlocking position. Then, after the locking sleeve 312 is driven to rotate, the locking wheel 311 can rotate and switch between the locking position and the unlocking position. Correspondingly, the elastic structure 322 of the locking part 32 switches between deformed and undeformed.

[0084] Furthermore, one of the locking rotating part 31 and the locking part 32 is provided with a release limit part and a locking limit part, while the other is provided with at least one limit engagement part. The release limit part and the locking limit part are spaced apart on the same circumference. When the elastic structure 322 of the locking part 32 abuts against the locking operation handwheel, the limit engagement part engages with the locking limit part to lock; when the elastic structure 322 moves away from the unlocking operation handwheel, the limit engagement part engages with the release limit part to lock; if the locking rotating part 31 is driven to rotate, the limit engagement part moves and switches between the locking limit part and the release limit part, and correspondingly, the elastic structure 322 of the locking part 32 switches between deformed and undeformed states. This method achieves the limit locking between the locking part 32 and the locking rotating part 31, preventing the rotation of the operation handwheel from affecting the locking rotating part 31 and ensuring the reliability of the locking.

[0085] In this embodiment, one of the locking wheel 311 and the locking part 32 is provided with a release limiting part and a locking limiting part, and the other is provided with at least one limiting engagement part. Preferably, the locking wheel 311 is provided with a limiting engagement part, and the locking part 32 is provided with a release limiting part and a locking limiting part.

[0086] like Figure 5 As shown, in one embodiment, the locking part 32 includes a disc-shaped body 32a, on which an elastic structure 322 is provided. The elastic structure 322 has a deformed state and an undeformed state, and can switch between the deformed state and the undeformed state. In the undeformed state, the elastic structure 322 returns to its original shape and unlocks the first direction operating handwheel 2. In the deformed state, the elastic structure 322 undergoes elastic deformation and abuts against and locks the first direction operating handwheel 2. Taking the locking wheel 311 as an example, the disc-shaped body 32a is releasably locked to the locking wheel 311 until the locking sleeve 312 is subjected to force, causing the locking wheel 311 to rotate relative to the locking part 32, thereby releasing the locking between the disc-shaped body 32a and the locking wheel 311. After the locking is released, the locking wheel 311 can rotate relative to the locking part 32 to control the deformation of the elastic structure 322 or to restore the elastic structure 322 to its original shape. It should be understood that when the limit lock is engaged, because the locking part 32 cannot rotate, the rotation of the first direction operation handwheel 2 will not cause the locking rotating part 31 to rotate.

[0087] The number of elastic structures 322 can be one or more, such as two, three, or more than three. Preferably, three elastic structures 322 are used. Multiple elastic structures 322 are beneficial to ensure the stability and reliability of locking. The multiple elastic structures 322 are preferably evenly arranged in the circumferential direction to make locking more stable and reliable. In this embodiment, the number of elastic structures 322 is three, and the three elastic structures 322 are arranged sequentially in the circumferential direction of the locking part 32.

[0088] Continue to refer to Figure 5 In some embodiments, the disk surface of the disk-shaped body 32a is provided with a hollow groove 323, which communicates with the outer peripheral surface of the disk-shaped body 32a and forms an elastic flange, constituting an elastic structure 322. That is, while forming the hollow groove 323 on the disk surface, an elastic flange can also be formed, resulting in a simple structure and convenient processing. In conjunction with this, such as... Figure 4b As shown, the locking wheel 311 has an actuating boss 3113 on the side facing the locking part 32 in the direction of the rotation axis. The actuating boss 3113 is at least partially inserted into the hollow groove 323. The hollow groove 323 matches the actuating boss 3113 so as to control the deformation of the elastic structure 322 through the cooperation between the actuating boss 3113 and the hollow groove 323. The shape and size of the actuating boss 3113 are generally matched with the shape and size of the hollow groove 323.

[0089] like Figure 5 As shown, in a preferred embodiment, the release limiting part is a release limiting groove 3231, the locking limiting part is a locking limiting groove 3232, and the limiting mating part is a limiting protrusion 31131. The release limiting groove 3231 and the locking limiting groove 3232 are disposed on the circumferential sidewall of the hollow groove 323, and the limiting protrusion 31131 is disposed on the inner side of the actuating boss 3113. Such a limiting structure is easy to process and implement. It can be understood that the release limiting groove 3231 is located in the unlocking area of ​​the hollow groove 323, the locking limiting groove 3232 is located in the locking area 3235 of the hollow groove 323, and the position of the locking limiting groove 3232 is adjacent to the elastic structure 322.

[0090] like Figure 4b As shown, a limiting protrusion 31131 is provided on the inner side of the actuating boss 3113. The limiting protrusion 31131 can selectively cooperate with one of the loosening limiting groove 3231 and the locking limiting groove 3232. When the limiting protrusion 31131 cooperates with the loosening limiting groove 3231, the front end a of the actuating boss 3113 has left the locking area 3235 and will not cause the elastic structure 322 to deform, so that the elastic structure 322 is in an undeformed state; when the limiting protrusion 31131 cooperates with the locking limiting groove 3232, the front end a of the actuating boss 3113 enters the locking area 3235, causing the elastic structure 322 to deform, so that the elastic structure 322 is in a deformed state.

[0091] Therefore, when the elastic structure 322 locks the first direction operating handwheel 2, the limiting protrusion 31131 engages with the locking limiting groove 3232 to lock; when the elastic structure 322 unlocks the first direction operating handwheel 2, the limiting protrusion 31131 engages with the releasing limiting groove 3231 to lock. When switching is required, the locking rotating part 31 is rotated to move the limiting protrusion 31131 between the locking limiting groove 3232 and the releasing limiting groove 3231.

[0092] Reference Figure 5 As shown, in some embodiments, the radial width of the cutout groove 323 gradually decreases along the locking direction from the loosening limiting groove 3231 to the locking limiting groove 3232. Correspondingly, as... Figure 4bAs shown, along the direction from the rear end b to the front end a of the actuating boss 3113, the radial width of the outer contour of the actuating boss 3113 gradually decreases. Therefore, the shape and size of the actuating boss 3113 match the shape and size of the hollow groove 323. This causes the front end a of the actuating boss 3113 to gradually act on the elastic structure 322 as the limiting protrusion 31131 moves from the loosening limiting groove 3231 to the locking limiting groove 3232, causing the elastic structure 322 to undergo elastic deformation. Then, as the limiting protrusion 31131 moves from the locking limiting groove 3232 to the loosening limiting groove 3231, the front end a of the actuating boss 3113 gradually releases control over the elastic structure 322, allowing the elastic structure 322 to gradually return to its original state.

[0093] It should be noted that in other embodiments, the limiting protrusion 31131 and the corresponding limiting groove (including the loosening limiting groove 3231 and the locking limiting groove 3232) can be interchanged to form a single limiting groove on the actuating boss 3113, while the loosening limiting protrusion and the locking limiting protrusion are formed on the circumferential sidewall of the hollow groove 323. Here, the limiting groove plays the role of the limiting protrusion 31131, while the loosening limiting protrusion replaces the loosening limiting groove, and the locking limiting protrusion replaces the locking limiting groove. The locking and loosening of the elastic structure 322 are achieved by using essentially the same operation.

[0094] like Figure 5 As shown, a transition zone 3233 is further provided on the circumferential sidewall of the hollow groove 323. The transition zone 3233 is located between the release limiting groove 3231 and the locking limiting groove 3232. The transition zone 3233 is used to smoothly connect the release limiting groove 3231 and the locking limiting groove 3232. This reduces the rotational resistance of the locking wheel 311, improving operational comfort. It also facilitates the smooth movement and switching of the actuating boss 3113 within the hollow groove 323, allowing the limiting protrusion 31131 to engage smoothly and preventing it from failing to engage properly. This improves the stability and reliability of the locking mechanism. The transition zone 3233 can be understood as an arc-shaped surface without any depressions or protrusions. It provides a buffer between the release limiting groove 3231 and the locking limiting groove 3232, allowing the elastic structure 322 to gradually shrink or return to its original shape. Furthermore, the hollow groove 323 also has a stop surface 3234 that forms an angle with the outer peripheral surface of the disc-shaped body 32a. The stop surface 3234 is located on the side of the release limiting groove 3231 away from the locking limiting groove 3232, and the elastic structure 322 is located on the side of the locking limiting groove 3232 away from the release limiting groove 3231. The setting of the stop surface 3234 helps to block the actuating boss 3113 and prevent the actuating boss 3113 from continuing to move in the unlocking direction. This unlocking direction is the direction along the locking limiting groove 3232 to the release limiting groove 3231.

[0095] like Figure 5As shown, the elastic structure 322 preferably has an arc-shaped outer surface. In its undeformed state, the diameter of the outer surface of the elastic structure 322 is smaller than the diameter of the outer peripheral surface of the disc-shaped body 32a, so that a gap is formed between the outer surface of the undeformed elastic structure 322 and the locking surface 21. Preferably, a resistance flange 324 is formed on the outer peripheral surface of the disc-shaped body 32a. The resistance flange 324 contacts the locking surface 21 of the first-direction operating handwheel 2 to provide initial damping. Understandably, the diameter of the outer peripheral surface of the disc-shaped body 32a varies, thus forming the resistance flange 324. The diameter of the resistance flange 324 is larger than the diameter of the elastic structure 322 in its undeformed state, so that the resistance flange 324 can always contact the locking surface 21. The resistance flange 324 can apply initial resistance to the first-direction operating handwheel 2, preventing the endoscope tip structure from suddenly rebounding and damaging the walls of the human body cavity. The setting of the resistance flange 324 also facilitates providing feedback to the operator and reducing operating errors. The number of resistance flanges 324 can correspond to the number of elastic structures 322. Preferably, there are multiple resistance flanges 324, which are evenly distributed in the circumferential direction of the disc-shaped body 32a. In this embodiment, three resistance flanges 324 are selected, and the resistance flanges 324 are disposed adjacent to the stop surface 3234.

[0096] As described above, the shape and size of the actuating boss 3113 match the shape and size of the hollowed-out groove 323. Specifically, as... Figure 4b As shown, the actuating boss 3113 is formed by a front end face 31132, an inner side face 31133, a rear end face 31134, and an outer arc face 31135. The radial width of the outer arc face 31135 gradually increases along the direction from the front end face 31132 to the rear end face 31134; that is, the distance from the outer arc face 31135 to the center of the locking wheel 311 gradually increases along the path from the front end a to the rear end b. Furthermore, the rear end face 31134 abuts against the stop face 3234. A narrow front end a is formed at the front end face 31132. After the front end a enters the narrow locking area 3235 of the slot 323, it causes the elastic structure 322 to elastically deform. After the front end a leaves the narrow locking area 3235 of the slot 323, the elastic structure 322 returns to its original shape.

[0097] The number of actuating bosses 3113 corresponds to the number of elastic structures 322. Each elastic structure 322 is provided with a corresponding hollow groove 323. The actuating bosses 3113 and hollow grooves 323 are matched one-to-one.

[0098] like Figures 1 to 3 As shown, and in combination Figure 6The first-direction locking mechanism 3 further includes a pressure sleeve 7 coaxially connected to the locking part 32. The pressure sleeve 7 is detachably or non-detachably connected to the locking part 32. The pressure sleeve 7 can be sleeved onto the mounting structure 4. The pressure sleeve 7 can further press the locking part 32 radially on the mounting structure 4, effectively preventing the locking part 32 from moving relative to the mounting structure 4. Preferably, the pressure sleeve 7 is detachably connected to the locking part 32. There can be multiple detachable connection methods between the pressure sleeve 7 and the locking part 32, and at least one can be selected.

[0099] Exemplary, such as Figure 5 As shown, the locking part 32 is provided with a plurality of auxiliary positioning holes 325, the axis of which is parallel to the axis of the mounting shaft 41, and the plurality of auxiliary positioning holes 325 are evenly arranged along the circumference of the locking part 32. Preferably, three auxiliary positioning holes 325 are provided. Figure 6 As shown, the pressure sleeve 7 has pins 71 for inserting into the auxiliary positioning holes 325. The number of pins 71 corresponds to the number of auxiliary positioning holes 325, and the pins 71 and auxiliary positioning holes 325 are arranged in a one-to-one correspondence. Furthermore, the pressure sleeve 7 is fitted onto the mounting shaft 41. For example, the shape of the center hole 72 of the pressure sleeve 7 is consistent with the shape of the irregular connection portion 411. During assembly, the pins 71 of the pressure sleeve 7 are inserted into the auxiliary positioning holes 325, and the center hole 72 mates with the irregular connection portion 411 of the mounting shaft 41 to prevent the pressure sleeve 7 from rotating around the axis of the mounting shaft 41.

[0100] It should be noted that when the locking part 32 is made of silicone rubber or other soft materials, displacement may occur due to deformation. Therefore, a pressure sleeve 7 made of a harder material is used on the locking part 32. The pressure sleeve 7 is used to assist the locking part 32 in rotational stopping. Of course, in other embodiments, if the locking part 32 itself is not easily deformed, the pressure sleeve 7 can be omitted. Therefore, the choice of whether to provide a pressure sleeve 7 depends on the material of the locking part 32. If a pressure sleeve 7 is used, it can enhance the fixation between the locking part 32 and the mounting structure 4.

[0101] Next, the locking and releasing process of the first direction operating handwheel 2 will be described in more detail with reference to several preferred embodiments.

[0102] During the process of rotating the locking sleeve 312 from loosening (i.e., unlocking) to locking, the locking sleeve 312 drives the locking wheel 311 to rotate synchronously. After the locking wheel 311 rotates, the limiting protrusion 31131 of the locking wheel 311 disengages from the loosening limiting groove 3231 of the disc-shaped body 32a, passes through the transition area 3233, and reaches the locking limiting groove 3232. Simultaneously, the front end a of the actuating boss 3113 of the locking wheel 311 gradually approaches the locking area 3235 and finally abuts against the narrowest position of the locking area 3235. Simultaneously, the rear end face 31134 of the locking wheel 311 moves away from the stop face 3234 and gradually moves away until it reaches the farthest position. Synchronously, the outer arc surface 31135 of the locking wheel 311 gradually cuts into the locking area 3235 and abuts against the elastic structure 322, causing the elastic structure 322 to expand outward and gradually increase in deformation. When the limiting protrusion 31131 of the locking wheel 311 reaches the locking limiting groove 3232, the outward expansion deformation of the elastic structure 322 reaches the set maximum value. At this time, the outwardly expanded part of the elastic structure 322 is in close contact with the side wall of the inner cavity 22 of the first direction operating handwheel 2. In this state, when the first direction operating handwheel 2 is rotated, the disc-shaped body 32a prevents the rotation of the first direction operating handwheel 2, thereby achieving the locking effect. At this time, since the limiting protrusion 31131 of the locking wheel 311 is stuck in the locking limiting groove 3232 of the disc-shaped body 32a, the rotation of the first direction operating handwheel 2 will not drive the locking wheel 311 and the locking sleeve 312 to rotate in the locked state.

[0103] During the process of rotating the locking sleeve 312 from locking to releasing, the locking sleeve 312 drives the locking wheel 311 to rotate synchronously. The limiting protrusion 31131 of the locking wheel 311 disengages from the locking limiting groove 3232 of the disc-shaped body 32a, passes through the transition zone 3233, and reaches the releasing limiting groove 3231. Synchronously, the front end a of the locking wheel 311 gradually moves away from the locking zone 3235 and finally reaches its farthest position. Synchronously, the rear end face 31134 of the locking wheel 311 gradually approaches the stop face 3234 and finally abuts against the stop face 3234. Synchronously, the outer arc surface 31135 of the locking wheel 311 gradually moves away from the locking area 3235 and away from the elastic structure 322, causing the elastic structure 322 to gradually recover its deformation inward. When the limiting protrusion 31131 of the locking wheel 311 reaches the releasing limiting groove 3231, the elastic structure 322 recovers its deformation inward to its initial position. At this time, the elastic structure 322 returns to its initial position inward, and the outer surface of the elastic structure 322 moves away from the inner cavity 22 sidewall of the first direction operating handwheel 2. In this state, when the first direction operating handwheel 2 is rotated, the disc-shaped body 32a basically does not prevent the rotation of the first direction operating handwheel 2, at most there is initial damping, and finally the first direction operating handwheel 2 is released. Similarly, since the limiting protrusion 31131 of the locking wheel 311 is stuck in the release limiting groove 3231 of the disc-shaped body 32a, the rotation of the first direction operation handwheel 2 in the released state will not drive the locking wheel 311 and the locking sleeve 312 to rotate.

[0104] It should also be noted that in this embodiment, the structure of the handwheel locking mechanism is optimized into a locking sleeve 312, a locking wheel 311, and a disc-shaped locking part 32 with a built-in elastic flange. An unexpected effect is that, while locking the first-direction operating handwheel 2, the mechanical structure of the handwheel locking is significantly simplified, the number of parts is reduced, and costs are lowered. Furthermore, during assembly, complex adjustments are largely unnecessary, saving assembly time. Since the locking of the first-direction operating handwheel 2 is mainly determined by the deformation of the elastic structure 322, it is largely unaffected by axial installation errors, machining errors, and clearances. This not only reduces the installation accuracy requirements of the handwheel locking mechanism, lowering the difficulty of production and assembly, but also ensures reliable and stable locking of the operating handwheel, with good locking effect and minimal rebound, further improving the reliability and safety of endoscope bending control.

[0105] <Example 2>

[0106] Please refer to Figures 7 to 11The endoscope, endoscope handle, and handwheel locking mechanism provided in Embodiment 2 of the present invention are basically the same in structure and locking method as the endoscope, endoscope handle, and handwheel locking mechanism provided in Embodiment 1. The identical parts will not be described again; only the differences will be described below. Furthermore, for ease of understanding and description, some structural designations in Embodiment 2 will continue to use the designations of the corresponding structures in Embodiment 1.

[0107] like Figures 7 to 11 As shown, unlike Embodiment 1, Embodiment 2 provides an endoscope, endoscope handle, and handwheel locking mechanism, in which a second-direction operation handwheel 8 is used. The second-direction operation handwheel 8 can control the bending structure to bend in a second direction. For example, in this embodiment, the second-direction operation handwheel 8 can control the up and down bending of the bending structure, thus providing an illustrative explanation.

[0108] like Figure 8 As shown, in some embodiments, the second direction operation handwheel 8 is provided with direction indicators ΔU and ΔD, where ΔU represents the upward bending operation direction and ΔD represents the downward bending operation direction. An arrow indicates the rotation direction of the second direction operation handwheel 8. Generally, from... Figure 8 From a top-down view, rotating counterclockwise results in an upward curve, while rotating clockwise results in a downward curve.

[0109] The second-direction operating handwheel 8 is releasably locked by the second-direction locking mechanism 9. The second-direction locking mechanism 9 and the first-direction locking mechanism 3 operate independently and do not affect each other. The second-direction locking mechanism 9 includes a locking rotating part 91 and a locking part 92. The structure of the locking part 92 in the second-direction locking mechanism 9 may be the same as or different from the structure of the locking part 32 in the first-direction locking mechanism 3. In the following description, an example of the same structure will be given for illustration.

[0110] When the locking rotating part 91 in the second-direction locking mechanism 9 is driven to rotate, the locking rotating part 91 causes the elastic structure 322 of the locking part 92 to deform. The deformed elastic structure 322 abuts against the second-direction operating handwheel 8 in the radial direction, locking the second-direction operating handwheel 8. This keeps the corresponding bending structure of the endoscope controlled by the second-direction operating handwheel 8 in its current state and prevents it from easily springing back. When the locking rotating part 91 is driven to rotate in the opposite direction, the locking rotating part 91 releases its action on the elastic structure 322, allowing the elastic structure 322 of the locking part 92 to return to its original state and unlocking the second-direction operating handwheel 8. The locking rotating part 91 is coaxially connected to the locking part 92 along one side of its own rotation axis. The locking rotating part 91 is rotatably mounted on the housing 1. The locking part 92 is located in the inner cavity of the second-direction operating handwheel 8 and is fixedly mounted on the housing 1.

[0111] Unlike Example 1, such as Figure 9As shown, the locking rotating part 91 of the second-direction locking mechanism 9 includes a locking wrench 911, which differs from the locking wheel 311 and locking sleeve 312 in Embodiment 1. More specifically, the locking wrench 911 has a connected annular part 911a and a wrench part 911b, which are, for example, but not limited to, an integral or monolithic design, or can be assembled separately. The wrench part 911b is used to directly drive the locking wrench 911 to rotate under force, thereby the annular part 911a directly controls the deformation of the elastic structure 322 of the locking part 92. Conversely, when the wrench part 911b is driven to rotate in the opposite direction, it drives the corresponding annular part 911a to rotate in the opposite direction, thereby the annular part 911a, which rotates in the opposite direction, releases the effect on the elastic structure 322, allowing the elastic structure 322 to return to its original state. In practice, the wrench part 911b extends radially outward from the outer peripheral surface of the annular part 911a and extends to the outside of the second-direction operating handwheel 8 through the inner cavity opening of the second-direction operating handwheel 8. The operator only needs to operate the wrench part 911b to rotate the locking wrench 911. In this embodiment, the annular part 911a is located in the inner cavity of the second-direction operating handwheel 8 and is sleeved on the mounting structure 4. Furthermore, the annular part 911a is located on the side of the locking part 92 near the outer shell 1 and is coaxially connected to the locking part 32. Optionally, the wrench part 911b is provided with an unlocking mark ΔF.

[0112] It should be noted that if the first direction operating handwheel 2 needs to be set simultaneously, the inner cavity of the second direction operating handwheel 8 can be configured to open towards the outer casing 1 (see...). Figure 7 The mounting structure 4 passes through the inner cavity of the second-direction operating handwheel 8 and enters the inner cavity 22 of the first-direction operating handwheel 2 from the bottom. This allows the two handwheel locking mechanisms to share the mounting structure 4 and be arranged coaxially, resulting in a compact structure and small overall size. The locking part 92 is located between the annular part 911a and the top surface of the inner cavity of the second-direction operating handwheel 8. Thus, the side wall of the inner cavity of the second-direction operating handwheel 8 around the axis of rotation forms the locking surface of the second-direction operating handwheel 8. At this time, the elastic structure 322 of the locking part 92 elastically deforms and contacts and abuts against the locking surface of the second-direction operating handwheel 8, thereby locking the second-direction operating handwheel 8. When the elastic structure 322 of the locking part 92 returns to its original shape, it leaves the locking surface, thereby unlocking the second-direction operating handwheel 8.

[0113] In this embodiment, the inner cavity of the second-direction operating handwheel 8 does not need to be covered because the second-direction operating handwheel 8 itself has a top surface, and the opening of the inner cavity faces the outer casing 1, so that the structure inside the inner cavity of the second-direction operating handwheel 2 is not exposed. Therefore, the locking sleeve 312 of Embodiment 1 is unnecessary, the structure can be simpler, and the number of parts can be reduced.

[0114] During assembly, a mounting kit 11 may be optionally provided. The mounting kit 11 is directly or indirectly fitted onto the mounting shaft 41, and then a locking part 92 and a locking wrench 911 are mounted on the mounting kit 11. For example, the second-direction operating handwheel 8 itself has an internal hollow post (not labeled) through which the mounting shaft 41 can pass. The internal hollow post is located within the cavity of the second-direction operating handwheel 8, and the mounting kit 11 is fitted onto the internal hollow post. See [reference needed] for details. Figure 7 At this point, both the locking part 92 and the locking wrench 911 are directly mounted on the mounting kit 11. The mounting kit 11 can be further provided with a step, which limits the locking part 92 and the locking wrench 911, thus eliminating the need for the retaining ring 5 and nut 6 of Embodiment 1.

[0115] like Figure 7 As shown, as an example, the assembly 11 has a first-level step A, and the annular portion 911a of the locking wrench 911 directly engages with the first-level step A and can rotate freely around the first-level step A. Figure 9 As shown, the locking wrench 911 has a circular inner hole 911c, which is directly fitted onto the first-level step A. As an example, the assembly 11 has a second-level step B, and the locking part 92 directly mates with the second-level step B, remaining relatively stationary with the assembly 11. The cross-sectional shape of the second-level step B matches the shape of the irregular mounting hole 321 of the locking part 92, thereby preventing the locking part 92 from rotating. (Refer to...) Figure 7 In the orientation shown, the axes of the second-level step B and the first-level step A coincide, the locking part 92 is located above the locking wrench 911, and the wrench part 911b of the locking wrench 911 extends from the bottom of the second direction operating handwheel 8 and can be operated.

[0116] Optionally, a pressure sleeve 7 may be detachably or non-detachably mounted on the locking part 92, the pressure sleeve 7 being located on the side of the locking part 92 away from the locking wrench 911 (as shown above). Figure 11 As shown, in this embodiment, the center hole 72 of the pressure sleeve 7 can be configured as an irregularly shaped hole, such as, but not limited to, a square hole. Using a square hole as an example, the center hole 72 of the pressure sleeve 7 is formed by connecting a straight edge 72a and a circular arc 72b, achieving a tight fit between the pressure sleeve 7 and the assembly 11.

[0117] It should be understood that the locking wrench 911, the locking part 92, and the connection between the two are basically the same as in Embodiment 1, and will not be described in detail hereafter.

[0118] Similar to the principle of the locking wheel 311 in Embodiment 1, such as Figure 9As shown, the locking wrench 911 has an actuating boss 3113 on the side facing the locking part 92 in the direction of the rotation axis, and a limiting protrusion 31131 is provided on the inner side 31133 of the actuating boss 3113. The locking wrench 911 has multiple actuating bosses 3113, which are preferably evenly arranged along the circumference of the locking wrench 911. Preferably, three actuating bosses 3113 are selected.

[0119] In the locking wrench 911, the actuating boss 3113 is also formed by a front end face 31132, an inner side face 31133, a rear end face 31134, and an outer arc face 31135 in sequence. The radial width of the outer arc face 31135 gradually increases along the direction from the front end face 31132 to the rear end face 31134, and the distance from the outer arc face 31135 to the center of the annular portion 911a gradually increases along the path from the front end a to the rear end b. Furthermore, the rear end face 31134 abuts against the stop face 3234, and a narrow front end a is formed at the front end face 31132. After the front end a enters the narrow locking area 3235 of the slot 323, it causes the elastic structure 322 to elastically deform. After the front end a leaves the narrow locking area 3235 of the slot 323, the elastic structure 322 returns to its original shape.

[0120] like Figure 10 As shown, the structure of the locking part 92 in this embodiment is the same as that of the locking part 92 in Embodiment 1, and will not be described in detail again. Please refer to Embodiment 1 for details.

[0121] Next, in conjunction with the preferred embodiment, the locking and releasing process of the second-direction operating handwheel 8 will be described in more detail.

[0122] During the process of turning the locking wrench 911 from loosening to locking, the limiting protrusion 31131 of the locking wrench 911 disengages from the loosening limiting groove 3231 of the locking part 92, passes through the transition area 3233, and reaches the locking limiting groove 3232. Simultaneously, the front end a of the actuating boss 3113 of the locking wrench 911 gradually approaches the locking area 3235 and finally abuts against the narrowest position of the locking area 3235. Simultaneously, the rear end face 31134 of the locking wrench 911 moves away from the stop face 3234 and gradually moves away until it reaches its farthest position. Simultaneously, the outer arc surface 31135 of the locking wrench 911 gradually cuts into the locking area 3235 and abuts against the elastic structure 322, causing the elastic structure 322 to expand outward and gradually increase in deformation. When the limiting protrusion 31131 of the locking wrench 911 reaches the locking limiting groove 3232, the outward expansion deformation of the elastic structure 322 reaches the set maximum value. At this time, the outwardly expanded part of the elastic structure 322 is in close contact with the inner cavity sidewall of the second direction operating handwheel 8. In this state, when the second direction operating handwheel 8 is rotated, the locking part 92 prevents the rotation of the second direction operating handwheel 8, thereby achieving the locking effect. At this time, since the limiting protrusion 31131 of the locking wrench 911 is stuck in the locking limiting groove 3232 of the locking part 92, the rotation of the second direction operating handwheel 8 will not drive the locking wrench 911 to rotate in the locked state.

[0123] During the process of turning the locking wrench 911 from locking to releasing, the limiting protrusion 31131 of the locking wrench 911 disengages from the locking limiting groove 3232 of the locking part 92, passes through the transition area 3233, and reaches the releasing limiting groove 3231. Simultaneously, the front end a of the locking wrench 911 gradually moves away from the locking area 3235 and finally reaches its farthest position. Simultaneously, the rear end face 31134 of the locking wrench 911 gradually approaches the stop face 3234 and finally abuts against the stop face 3234. Simultaneously, the outer arc surface 31135 of the locking wrench 911 gradually moves away from the locking area 3235 and away from the elastic structure 322, causing the elastic structure 322 to gradually recover its deformation inward. When the limiting protrusion 31131 of the locking wrench 911 reaches the releasing limiting groove 3231, the elastic structure 322 recovers its deformation inward to its initial position. At this time, the elastic structure 322 returns to its initial position inward, and the outer surface of the elastic structure 322 moves away from the inner cavity sidewall of the second direction operating handwheel 8. In this state, when the second direction operating handwheel 8 is rotated, the locking part 92 does not prevent the rotation of the second direction operating handwheel 8, thus achieving a loosening effect. At this time, since the limiting protrusion 31131 of the locking wrench 911 is stuck in the releasing limiting groove 3231 of the locking part 92, the rotation of the second direction operating handwheel 8 will not drive the locking wrench 911 to rotate in the loosened state.

[0124] It should be noted that the structure and principle of the second direction handwheel locking mechanism 9 in Embodiment 2 are basically the same as those of the first direction handwheel locking mechanism 3 in Embodiment 1. Therefore, any parts not described in detail in Embodiment 2 can be referred to Embodiment 1.

[0125] Similarly, in Embodiment 2, the handwheel locking mechanism is optimized to consist of a locking wrench 911 and a disc-shaped locking part 92 with a built-in elastic flange. An unexpected benefit is that, while still being able to lock the second-direction operating handwheel 8, the mechanical structure of the handwheel locking is significantly simplified, reducing the number of parts and lowering costs. Furthermore, during assembly, complex adjustments are largely unnecessary, saving assembly time. Since the locking of the second-direction operating handwheel 8 is primarily determined by the deformation of the elastic structure 322 on the disc-shaped locking part 92, it is largely unaffected by axial installation errors, machining errors, and clearances. This not only reduces the installation accuracy requirements of the handwheel locking mechanism, lowering the difficulty of production and assembly, but also ensures reliable and stable locking of the operating handwheel, providing a good locking effect and reducing the likelihood of springback. This further improves the reliability and safety of endoscope bending control.

[0126] In summary, the endoscope, endoscope handle, and handwheel locking mechanism provided by this invention can achieve handwheel locking through a simpler handwheel locking mechanism. This not only simplifies the mechanical structure of the handwheel locking mechanism and reduces the number of parts, making installation easier, but also effectively controls costs while ensuring the endoscope's functionality, thus meeting the development requirements of endoscope "consumable" materials. Preferably, using plastic parts for some structural components in the locking assembly can further reduce costs. In particular, the locking method provided by this invention is less susceptible to axial installation errors, machining errors, and gaps, reducing installation accuracy requirements, making installation easier, and providing a better locking effect. The locking is more stable and reliable, less prone to springback, and offers good reliability and safety.

[0127] The terms "first" and "second" used in this document are for descriptive purposes only and should not be construed as meaning that "first" and "second" must both exist simultaneously. In some cases, only "first" or "second" may appear, while in others, both "first" and "second" may appear simultaneously. "Radial" in this document refers to the direction perpendicular to the axis of rotation, and can also be understood as the diametrical direction; "axial" refers to the direction along the axis of rotation; and "circumferential" refers to the direction around the axis of rotation.

[0128] The above description is only a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present invention.

Claims

1. A handwheel locking mechanism for an endoscope, used to releasably lock the operating handwheel for controlling the bending of the endoscope handle, characterized in that, The handwheel locking mechanism includes a locking rotating part and a locking part. The locking rotating part is coaxially connected to the locking part along one side of its own rotation axis. The locking part has an elastic structure. A plurality of the elastic structures are arranged sequentially in the circumferential direction of the locking part. The locking part is used to be disposed in the operating handwheel and fixed on the endoscope handle. The locking rotating part is used to be rotatably disposed on the endoscope handle. The rotation axis of the locking rotating part coincides with the rotation axis of the operating handwheel. The locking part includes a disc-shaped body, the disc surface of which is provided with a hollow groove; the hollow groove is connected to the outer peripheral surface of the disc-shaped body and forms an elastic flange, the elastic flange constituting the elastic structure; along the direction from loosening to locking, the radial width of the hollow groove gradually decreases. The locking rotating part has an actuating boss on one side facing the disc-shaped body in the direction of the rotation axis; the actuating boss is at least partially inserted into the hollow groove; the hollow groove matches the actuating boss; along the direction from the rear end to the front end of the actuating boss, the radial width of the outer contour of the actuating boss gradually decreases. When the locking rotating part is driven to rotate, the front end of the actuating boss gradually acts on the elastic structure as it moves from loosening to locking, causing the elastic structure to undergo elastic deformation. This causes the deformed elastic structure to abut against and lock the operating handwheel in the radial direction. When the locking rotating part is driven to rotate in the opposite direction, the front end of the actuating boss gradually releases control over the elastic structure as it moves from locking to loosening, causing the elastic structure to gradually return to its original state and unlock the operating handwheel.

2. The handwheel locking mechanism of the endoscope according to claim 1, characterized in that, Before the locking rotating part is driven to rotate, the locking part and the locking rotating part are mutually limited and locked; When the elastic structure abuts against and locks the operating handwheel, the locking part and the locking rotating part are limited and locked in the locking position; When the elastic structure leaves the unlocking handwheel, the locking part and the locking rotating part are locked in the released position; after the locking rotating part is driven to rotate, the locking rotating part moves and switches between the locked position and the released position.

3. The handwheel locking mechanism of the endoscope according to claim 2, characterized in that, The locking part is provided with a loosening limiting part and a locking limiting part, and the locking rotating part is provided with at least one limiting engagement part. The loosening limiting part and the locking limiting part are arranged at intervals on the same circumference. When the elastic structure abuts against and locks the operating handwheel, the limiting engagement part engages with the locking limiting part to lock; when the elastic structure moves away from and unlocks the operating handwheel, the limiting engagement part engages with the releasing limiting part to lock; after the locking rotating part is driven to rotate, the limiting engagement part moves and switches between the locking limiting part and the releasing limiting part.

4. The handwheel locking mechanism of the endoscope according to any one of claims 1-3, characterized in that, The inner side of the actuating boss is provided with a limiting protrusion, and the circumferential sidewall of the hollow groove is provided with a release limiting groove and a locking limiting groove at intervals. When the elastic structure abuts against and locks the operating handwheel, the limiting protrusion engages with the locking limiting groove to lock; when the elastic structure moves away from and unlocks the operating handwheel, the limiting protrusion engages with the releasing limiting groove to lock; after the locking rotating part is driven to rotate, the limiting protrusion moves and switches between the locking limiting groove and the releasing limiting groove.

5. The handwheel locking mechanism of the endoscope according to claim 4, characterized in that, The radial width of the hollow groove gradually decreases along the locking direction from the loosening limiting groove to the locking limiting groove, and the shape and size of the actuating boss match the shape and size of the hollow groove.

6. The handwheel locking mechanism of the endoscope according to claim 4, characterized in that, The circumferential sidewall of the hollow groove is also provided with a transition area, and the loosening limiting groove and the locking limiting groove are smoothly connected through the transition area. The hollow groove also has a stop surface that forms an angle with the outer circumferential surface of the disc-shaped body. The stop surface is located on the side of the loosening limiting groove away from the locking limiting groove, and the elastic flange is located on the side of the locking limiting groove away from the loosening limiting groove.

7. The handwheel locking mechanism of the endoscope according to claims 1-3, characterized in that, The outer peripheral surface of the disc-shaped body is formed with a resistance flange, which contacts the operating handwheel to provide initial damping.

8. The handwheel locking mechanism of the endoscope according to claim 7, characterized in that, The number of resistance flanges is multiple, and the multiple resistance flanges are evenly distributed in the circumferential direction of the disc-shaped body.

9. The handwheel locking mechanism of the endoscope according to any one of claims 1-3, characterized in that, The multiple elastic structures are evenly distributed in the circumferential direction of the locking portion.

10. The handwheel locking mechanism of the endoscope according to any one of claims 1-3, characterized in that, The locking rotating part includes a locking wheel and a locking sleeve that are coaxially arranged and connected, and the locking wheel is coaxially connected to the locking part; When the locking sleeve is driven to rotate, it causes the locking wheel to rotate, which in turn causes the elastic structure to deform. When the locking sleeve is driven to rotate in the opposite direction, it causes the corresponding locking wheel to rotate in the opposite direction, which in turn releases the effect on the elastic structure.

11. The handwheel locking mechanism of the endoscope according to any one of claims 1-3, characterized in that, The locking rotating part includes a locking wrench, which has an annular part and a wrench part connected to each other. The wrench part extends radially outward from the outer peripheral surface of the annular part, and the annular part is coaxially connected to the locking part. When the wrench is driven to rotate, it causes the annular portion to rotate, which in turn causes the elastic structure to deform. When the wrench is driven to rotate in the opposite direction, it causes the corresponding annular portion to rotate in the opposite direction, which in turn releases the effect on the elastic structure.

12. The handwheel locking mechanism of the endoscope according to any one of claims 1-3, characterized in that, It also includes a pressure sleeve coaxially connected to the locking part. The pressure sleeve, the locking rotating part, and the locking part are all used to be sleeved on the mounting structure of the endoscope handle. The pressure sleeve is used to reduce the movement of the locking part relative to the mounting structure.

13. The handwheel locking mechanism of the endoscope according to claim 12, characterized in that, The locking part is provided with a plurality of auxiliary positioning holes, the axis of the auxiliary positioning holes being parallel to the axis of the mounting structure. The plurality of auxiliary positioning holes are evenly arranged along the circumference of the locking part. The pressure sleeve has pins for inserting into the auxiliary positioning holes, and the pins are arranged in a one-to-one correspondence with the auxiliary positioning holes.

14. An endoscope handle, equipped with an operating handwheel, characterized in that, The operating handwheel is provided with a handwheel locking mechanism for the endoscope as described in any one of claims 1-13.

15. The endoscope handle according to claim 14, characterized in that; The operating handwheel has an inner cavity with one end open. The locking part is located in the inner cavity, and the locking rotating part is partially located in the inner cavity. The endoscope handle is provided with a mounting structure, which is at least partially located in the inner cavity. The locking part and the locking rotating part are both sleeved on the mounting structure and arranged along the axial direction of the mounting structure. After the elastic structure of the locking part deforms, it abuts against the side wall of the inner cavity around the rotation axis to lock the operating handwheel.

16. The endoscope handle according to claim 15, characterized in that, The operating handwheel is a first-direction operating handwheel used to control the bending structure of the endoscope to bend in a first direction. The inner cavity of the first-direction operating handwheel opens away from the outer shell of the endoscope handle. The locking rotating part includes a locking wheel and a locking sleeve coaxially arranged and connected. The locking sleeve is disposed at the opening of the inner cavity to cover the inner cavity. The locking wheel is disposed in the inner cavity and sleeved on the mounting structure. The locking wheel is located on the side of the locking part away from the outer shell and is coaxially connected to the locking part.

17. The endoscope handle according to claim 15, characterized in that, The operating handwheel is a second-direction operating handwheel used to control the bending structure of the endoscope to bend in a second direction. The inner cavity of the second-direction operating handwheel opens toward the outer shell of the endoscope handle. The locking rotating part includes a locking wrench, which has a connected annular portion and a wrench portion. The annular portion is located in the inner cavity and is sleeved on the mounting structure. The wrench portion extends radially outward from the outer peripheral surface of the annular portion and extends through the opening to the outside of the second-direction operating handwheel. The annular portion is located on the side of the locking part closer to the outer shell and is coaxially connected to the locking part.

18. The endoscope handle according to claim 15, characterized in that, The endoscope handle is provided with two operating handwheels, namely a first direction operating handwheel and a second direction operating handwheel. The first direction operating handwheel is used to control the bending structure of the endoscope to bend in a first direction, and the second direction operating handwheel is used to control the bending structure of the endoscope to bend in a second direction. The two operating handwheels are arranged coaxially in the axial direction of the operating handwheels, and each operating handwheel is releasably locked by a corresponding handwheel locking mechanism.

19. An endoscope, comprising an endoscope handle, wherein the endoscope handle is provided with an operating handwheel, characterized in that, The operating handwheel is provided with an endoscope handwheel locking mechanism as described in any one of claims 1-14.

Images