Endoscope and operating handle therefor

Abstract

The application provides an endoscope and an operating handle thereof, the operating handle being used for controlling an insertion part of the endoscope, and the operating handle comprising: a housing; a knob structure being rotationally connected to the housing and being used for controlling the insertion part of the endoscope; and a locking structure being located between the knob structure and the housing, the locking structure comprising a connecting piece and a pushing piece, one end of the connecting piece being rotationally connected to the knob structure, and the pushing piece being located at the other end of the connecting piece; at least part of the pushing piece protruding from the housing, and the pushing piece being configured to have the at least part protruding from the housing held by a user to drive the connecting piece to rotate relative to the knob structure, so that the knob structure is switched between an unlocked state and a locked state. The endoscope and the operating handle thereof provided by the application extend the operating component to the outside of the housing and optimize the transmission path, so that the required operating force can be effectively reduced.

Description

Technical Field

[0001] This application relates to medical device technology, and more particularly to an endoscope and its operating handle. Background Technology

[0002] An endoscope is a medical device that is mainly used to enter the body through natural cavities (such as the esophagus, intestines, trachea, etc.) or minimally invasive incisions to observe, diagnose, and treat organs or tissues.

[0003] In the endoscopes of related technologies, the locking lever fixes the bending angle of the handwheel adjustment through mechanical linkage.

[0004] However, the aforementioned locking lever requires a large amount of force to drive the locking mechanism, making operation laborious and inconvenient for users. Utility Model Content

[0005] This application provides an endoscope and its operating handle to solve the technical problem in the related art that the locking lever requires a large amount of force to drive the locking mechanism, resulting in laborious operation and inconvenience for users.

[0006] In a first aspect, embodiments of this application provide an operating handle for an endoscope, used to control the insertion portion of the endoscope, the operating handle comprising:

[0007] case;

[0008] A knob structure, rotatably connected to the housing, is used to control the insertion part of the endoscope;

[0009] A locking structure is located between the knob structure and the housing, and the locking structure includes a connector and a toggle element;

[0010] One end of the connector is rotatably connected to the knob structure, and the toggle element is located at the other end of the connector;

[0011] At least a portion of the toggle protrudes from the housing, and the toggle is configured to be held by a user to rotate the connector relative to the knob structure, thereby switching the knob structure between an unlocked state and a locked state.

[0012] Optionally, in the above-described operating handle, along the extending direction of the connector, the actuating member includes a first end and a second end disposed opposite to each other, with the first end located between the connector and the second end;

[0013] At least the second end protrudes from the housing.

[0014] Optionally, in the aforementioned operating handle, both the first end and the second end protrude from the housing.

[0015] or,

[0016] The second end protrudes from the housing, and the first end is located on the housing.

[0017] In the aforementioned operating handle, optionally, it is positioned along the thickness direction of the housing.

[0018] The orthographic projections of the first end and the second end onto the housing are both located outside the housing;

[0019] or,

[0020] The orthographic projection of the second end onto the housing is located on the housing, while the orthographic projection of the first end onto the housing is located outside the housing.

[0021] Optionally, in the above-mentioned operating handle, the knob structure, the connecting member, and the toggle member all rotate along the rotation axis;

[0022] Along the extending direction of the connector, the distance between the end of the toggle member away from the knob structure and the rotation axis is a, and the distance between the edge of the housing where the end of the toggle member away from the knob structure is located and the rotation axis is b. The relationship between a and b is: a > b.

[0023] Optionally, in the above-mentioned operating handle, the knob structure rotates along the rotation axis;

[0024] Along the extending direction of the connector, the distance between the end of the toggle member away from the knob structure and the rotation axis is a, and the distance between the edge of the housing where the end of the toggle member away from the knob structure is located and the rotation axis is b. The relationship between a and b is: 1 < a / b ≤ 2.

[0025] Optionally, in the aforementioned operating handle, the knob structure includes:

[0026] A first knob is rotatably connected to the housing. The first knob is used to connect with the insertion part to control the rotation of the insertion part in a first direction.

[0027] The second knob is rotatably connected to the housing and is located between the first knob and the second knob. The second knob is used to connect to the insertion part to control the rotation of the insertion part in the second direction.

[0028] The locking structure is located between the second knob and the housing, and the connector of the locking structure is screwed to the second knob;

[0029] The locking structure is configured to rotate the connector under the action of the toggle member, so as to adjust the degree of screw connection between the connector and the second knob.

[0030] Optionally, in the above-described operating handle, the actuating member has a mounting hole, the opening of which faces the connector;

[0031] The end of the connector away from the knob structure is located inside the mounting hole to connect the connector to the toggle member.

[0032] Optionally, in the above-mentioned operating handle, the wall of the mounting hole of the toggle member is bonded to the end of the connector away from the knob structure.

[0033] or,

[0034] The wall of the mounting hole of the toggle member is interference-fitted to the end of the connector away from the knob structure.

[0035] or,

[0036] The connector has a protrusion at the end away from the knob structure, and the mounting hole of the toggle member has a groove on its wall. The groove and the protrusion engage to connect the connector and the toggle member.

[0037] Optionally, in the aforementioned operating handle, the actuating member is provided with an anti-slip part, which is located on at least one side of the actuating member along the rotation direction.

[0038] Secondly, this application also provides an endoscope, including an insertion part and the aforementioned operating handle, the operating handle being used to control the insertion part.

[0039] The endoscope and its operating handle provided in this application extend the locking structure to the outside of the housing and optimize the transmission path, effectively reducing the required operating force. When the user applies rotational force by gripping the protruding part of the actuating component, the connecting component transmits the rotational motion to the knob structure. In the unlocked state, the friction between the connecting component and the knob structure is small, allowing the knob to rotate freely to adjust the angle of the insertion part. When the actuating component drives the connecting component to rotate to the locked position, the contact pressure between the connecting component and the knob structure increases, generating sufficient friction to prevent the knob from continuing to rotate, thereby fixing the bending angle of the insertion part.

[0040] Furthermore, through the above technical solution, the operating handle provided in this application embodiment can achieve a one-handed operation locking function. Thus, in scenarios such as gastroscopy where frequent angle adjustments are required, doctors can quickly lock the angle without interrupting the examination process, thereby effectively improving diagnostic and treatment efficiency and reducing operator fatigue. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0042] Figure 1 A three-dimensional structural schematic diagram of the operating handle for an endoscope provided in an embodiment of this application;

[0043] Figure 2 A schematic diagram showing the operating handle for an endoscope in the unlocked state, as provided in an embodiment of this application;

[0044] Figure 3 A schematic diagram showing the operating handle for an endoscope in a locked state, as provided in an embodiment of this application;

[0045] Figure 4 A schematic diagram of a first partial structure of an operating handle for an endoscope provided in an embodiment of this application;

[0046] Figure 5 This is a schematic diagram of a second partial structure of an operating handle for an endoscope provided in an embodiment of this application;

[0047] Figure 6 This is a partial cross-sectional view of the operating handle for an endoscope provided in an embodiment of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 10. Operating handle;

[0050] 100. Shell;

[0051] 200. Knob structure; 201. Rotation axis;

[0052] 210. First knob; 220. Second knob; 300. Locking structure; 310. Connector; 320. Actuator; 321. First end; 322. Second end; 323. Anti-slip part.

[0053] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0054] In existing technologies, the locking mechanism of endoscopes typically uses a mechanical linkage to fix the bending angle adjusted by the handwheel. Traditional locking levers require the user to apply considerable force to drive the locking mechanism, resulting in strenuous operation. For example, in intestinal examinations, doctors need to frequently adjust the endoscope angle and lock its position; excessive force can easily cause hand fatigue and affect examination efficiency.

[0055] To address the aforementioned technical problems, this application provides an endoscope and its operating handle. The operating handle controls the insertion portion of the endoscope. The operating handle includes: a housing; a knob structure rotatably connected to the housing for controlling the insertion portion of the endoscope; and a locking structure located between the knob structure and the housing, comprising a connector and a toggle member. One end of the connector is rotatably connected to the knob structure, and the toggle member is located at the other end of the connector. At least a portion of the toggle member protrudes from the housing, and the toggle member is configured such that at least a portion protruding from the housing is available for the user to hold and rotate the connector relative to the knob structure, thereby switching the knob structure between an unlocked state and a locked state.

[0056] The endoscope and its operating handle provided in this application extend the operating components outside the housing and optimize the transmission path, effectively reducing the required operating force. When the user applies rotational force by gripping the protruding part of the actuating component, the connecting component transmits the rotational motion to the knob structure. In the unlocked state, the friction between the connecting component and the knob structure is small, allowing the knob to rotate freely to adjust the angle of the insertion part. When the actuating component drives the connecting component to rotate to the locked position, the contact pressure between the connecting component and the knob structure increases, generating sufficient friction to prevent the knob from continuing to rotate, thereby fixing the bending angle of the insertion part.

[0057] Furthermore, through the above-described configuration, the operating handle provided in this embodiment can achieve a one-handed operation locking function. This allows doctors to quickly lock the angle in scenarios requiring frequent angle adjustments, such as gastroscopy, without interrupting the examination process, thereby effectively improving diagnostic and treatment efficiency and reducing operator fatigue.

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar devices or devices having the same or similar functions throughout. The described embodiments are some device embodiments of this application, not all device embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0059] In a first aspect, embodiments of this application provide an endoscope. The endoscope includes an insertion portion and an operating handle.

[0060] The insertion section is a slender, hollow strip that is inserted into the area to be observed. The operating handle is connected to the base of the insertion section. A universal cable extends from an anti-bend feature located on the side of the operating handle. An endoscope connector is located at the extended end of the universal cable.

[0061] The insertion part has a front end, a curved part that serves as a movable component, and a flexible tube part. The front end is a rigid component that forms the front end structure. The curved part is a movable part that is connected to the rear of the front end and can be bent freely. The flexible tube part is a long strip formed from a soft tubular component at the rear of the curved part and is flexible.

[0062] An observation optical system (not shown), an illumination optical system, an air / water supply nozzle, and a suction port are provided at the front end. Illumination light emitted from the light source of an external device connected to the endoscope, directed towards the subject through the illumination optical system, is transmitted to the front end via a light guide installed in the insertion section. Alternatively, the light source may be an LED or similar device built into the operating handle.

[0063] Reference Figure 1 Secondly, embodiments of this application also provide an operating handle 10 for controlling the insertion portion of an endoscope.

[0064] Specifically, the operating handle 10 includes a housing 100, a knob structure 200, and a locking structure 300.

[0065] The housing 100 refers to the supporting frame that encloses the internal mechanical structure. It can be made of medical-grade materials and is used to fix the knob structure 200 and the locking structure 300.

[0066] The knob structure 200 refers to a control component with a rotating shaft, which can be connected to the housing 100 via a bearing and is used to transmit rotational movement to the insertion part. The knob structure 200 is rotatably connected to the housing 100 to control the insertion part of the endoscope.

[0067] The locking structure 300 may include a connector 310 and a toggle 320.

[0068] The connecting component 310 refers to the transmission component that connects the knob and the actuating component 320. It can be a linkage and is used to convert the rotational motion of the actuating component 320 into a locking force. The actuating component 320 refers to an operating component with a gripping surface.

[0069] One end of the connector 310 is rotatably connected to the knob structure 200, and the other end is provided with a toggle member 320. Part of the toggle member 320 protrudes from the surface of the housing 100. When the user holds the protruding part, the connector 310 can be rotated relative to the knob structure 200, thereby switching the knob structure 200 between the unlocked and locked states.

[0070] Specifically, when the user applies a rotational force by gripping the protruding part of the toggle member 320, the connector 310 transmits the rotational motion to the knob structure 200. (Refer to...) Figure 2 In the unlocked state, the friction between the connector 310 and the knob structure 200 is small, allowing the knob to rotate freely to adjust the angle of the insertion part. (Refer to...) Figure 3 When the actuating member 320 drives the connecting member 310 to rotate to the locked position, the contact pressure between the connecting member 310 and the knob structure 200 increases, generating sufficient friction to prevent the knob from continuing to rotate, thereby fixing the bending angle of the insertion part.

[0071] Compared to existing technologies, traditional locking levers require overcoming significant frictional resistance to activate the locking mechanism. However, this embodiment extends the position of the actuating element 320, shortening the lever arm length and optimizing the torque transmission path. Existing locking mechanisms typically require two-handed operation, while this embodiment's single-handed operation design significantly improves ease of use.

[0072] Furthermore, through the above-described configuration, the operating handle 10 provided in this embodiment can achieve a one-handed operation locking function. This allows doctors to quickly lock the angle in scenarios requiring frequent angle adjustments, such as gastroscopy, without interrupting the examination process, thereby effectively improving diagnostic and treatment efficiency and reducing operator fatigue.

[0073] It is understandable that the housing 100 may also be provided with buttons for other functions. For example, buttons for suction, air or water delivery; switches for performing various endoscopic functions, mainly for operating the camera system, etc.

[0074] Reference Figure 4 , Figure 5 As an optional implementation, along the extending direction of the connector 310, the actuating member 320 includes a first end 321 and a second end 322 disposed opposite to each other, the first end 321 being located between the connector 310 and the second end 322, and at least the second end 322 protruding from the housing 100.

[0075] The extension direction of the connector 310 refers to the length direction of the connector 310, which can be achieved by adopting a straight or curved structure, and is used to define the relative positional relationship between the actuating member 320 and the connector 310.

[0076] The first end 321 and the second end 322 refer to the two ends of the actuating element 320 along the extension direction. They can be implemented with symmetrical or asymmetrical shapes and are used to form the fulcrum for the operation force. The second end 322 protruding from the housing 100 means that this end extends beyond the outer surface of the housing 100. It can be implemented with an extended design or a telescopic structure and is used to provide a user grip area to apply the operation force.

[0077] Specifically, when the user holds the second end 322 and applies force, the actuating member 320 forms a lever structure with the first end 321 as the fulcrum, driving the connecting member 310 to rotate around the knob structure 200. Since the second end 322 protrudes from the housing 100, the user's fingers can directly contact this area, extending the operating lever arm and thus reducing the force required to unlock or lock. The extension direction of the connecting member 310 and the positional relationship between the two ends of the actuating member 320 further optimize the force transmission path, making the knob state switching process smoother.

[0078] Through the above-described design, this embodiment effectively solves the problem of the arduous operation of the traditional endoscope locking structure 300. The outward protrusion design of the second end 322 of the actuating member 320 allows the user to switch the locking state with a smaller force. At the same time, the layout of both ends in the extension direction enhances structural stability and avoids accidental displacement during operation, thereby improving the safety and convenience of medical operations.

[0079] Reference Figure 5 In some embodiments, the first end 321 and the second end 322 of the actuating member 320 both protrude from the housing 100. That is, the actuating member 320 protrudes entirely from the housing 100.

[0080] In this way, when the user applies force, whether the first end 321 or the second end 322 is selected, a stable lever arm length can be obtained through the protruding part, avoiding the problem of lever arm shortening and uneven torque transmission that may occur due to the shift in grip position when only one end protrudes. At the same time, the protruding structure at both ends prevents the connector 310 from being subjected to excessive force on one side when receiving the rotational force of the toggle member 320, and can effectively prevent hand fatigue caused by frequent application of force by doctors.

[0081] In addition, the above settings can increase the selectable contact area between the user's hand and the lever 320. In this way, even if one end slips, the user can quickly switch to the other end for operation.

[0082] Reference Figure 4 In some other embodiments, the second end 322 protrudes from the housing 100 while the first end 321 is located on the housing 100. That is, the actuating member 320 partially protrudes from the housing 100.

[0083] With the above configuration, only the second end 322 of the toggle member 320 protrudes from the housing 100, while the first end 321 is placed on the housing 100, which reduces the number and range of protrusions on the outside of the operating handle 10.

[0084] In addition, the first end 321 of the actuating element 320 is located on the housing 100 and can serve as an auxiliary support for the torque fulcrum. When the user applies a rotational force to the second end 322 protruding from the housing 100, the mating structure between the first end 321 and the housing 100 can provide additional stability constraints for the actuating element 320 and prevent torque dispersion.

[0085] Understandably, the aforementioned locking structure 300 reduces the number of parts and simplifies the fit during assembly, which can reduce the probability of locking mechanism failure due to improper assembly and improve the long-term reliability of the product. On the other hand, the simplified processing and assembly process can reduce manufacturing costs and reduce the difficulty of replacing parts during later maintenance.

[0086] Reference Figure 5 In some embodiments, along the thickness direction of the housing 100, the orthographic projections of the first end 321 and the second end 322 on the housing 100 are both located outside the housing 100. That is, the actuating member 320 protrudes entirely from the housing 100.

[0087] In this way, when the user applies force, whether the first end 321 or the second end 322 is selected, a stable lever arm length can be obtained through the protruding part, avoiding the problem of lever arm shortening and uneven torque transmission that may occur due to the shift in grip position when only one end protrudes. At the same time, the protruding structure at both ends prevents the connector 310 from being subjected to excessive force on one side when receiving the rotational force of the toggle member 320, and can effectively prevent hand fatigue caused by frequent application of force by doctors.

[0088] In addition, the above settings can increase the selectable contact area between the user's hand and the lever 320. In this way, even if one end slips, the user can quickly switch to the other end for operation.

[0089] Reference Figure 4 In some other embodiments, along the thickness direction of the housing 100, the orthographic projection of the second end 322 onto the housing 100 is located on the housing 100, while the first end 321 is outside the housing 100. That is, the actuating member 320 partially protrudes from the housing 100.

[0090] With the above configuration, only the second end 322 of the toggle member 320 protrudes from the housing 100, while the first end 321 is placed on the housing 100, which reduces the number and range of protrusions on the outside of the operating handle 10.

[0091] In addition, the first end 321 of the actuating element 320 is located on the housing 100 and can serve as an auxiliary support for the torque fulcrum. When the user applies a rotational force to the second end 322 protruding from the housing 100, the mating structure between the first end 321 and the housing 100 can provide additional stability constraints for the actuating element 320 and prevent torque dispersion.

[0092] Understandably, the aforementioned locking structure 300 reduces the number of parts and simplifies the fit during assembly, which can reduce the probability of locking mechanism failure due to improper assembly and improve the long-term reliability of the product. On the other hand, the simplified processing and assembly process can reduce manufacturing costs and reduce the difficulty of replacing parts during later maintenance.

[0093] Reference Figure 4 , Figure 5 As an optional implementation, the knob structure 200, the connector 310, and the toggle member 320 all rotate along the rotation axis 201.

[0094] Along the extending direction of the connector 310, the distance between the end of the toggle member 320 away from the knob structure 200 and the rotation axis 201 is a, and the distance between the edge of the housing 100 and the rotation axis 201 is b. The relationship between a and b is: a > b.

[0095] The rotation axis 201 refers to the center line of rotation of the knob structure 200. The extension direction refers to the length direction of the connecting member 310 extending from the knob structure 200 to the actuating member 320, which is used to transmit rotational motion.

[0096] The relationship between distances a and b refers to the positional relationship between the end of the actuating element 320 and the edge of the housing 100, so that the operating part of the actuating element 320 is fully exposed, making it convenient for the user to apply force.

[0097] Specifically, when the user holds the toggle 320 and applies a rotational force, the connector 310 drives the knob structure 200 to rotate around the rotation axis 201. Since the length a of the end of the toggle 320 from the rotation axis 201 is greater than the length b of the edge of the housing 100 from the rotation axis 201, the operating arm of the toggle 320 is extended, thereby reducing the force required for rotation.

[0098] Compared to existing technologies, traditional locking levers have a short operating arm, requiring users to apply significant force to activate the locking mechanism. This solution, by setting the lever arm length of the actuating element 320 to exceed the edge distance of the housing 100, significantly reduces the operating torque, making switching between locking states much easier. Simultaneously, the extended design of the actuating element 320 avoids contact and friction between the hand and the housing 100 during operation, further improving operational smoothness.

[0099] With the above settings, the embodiments of this application can solve the problem of the traditional endoscope operating handle 10 locking mechanism being difficult to operate. By extending the lever arm length of the toggle member 320, the torque required for user operation is reduced, making locking and unlocking actions easier and faster. At the same time, the ergonomic design of the operating handle 10 is optimized to reduce hand fatigue.

[0100] Reference Figure 4 , Figure 5 As an optional implementation, the knob structure 200 rotates along the rotation axis 201. Along the extension direction of the connector 310, the distance between the end of the toggle member 320 away from the knob structure 200 and the rotation axis 201 is a, and the distance between the edge of the housing 100 and the rotation axis 201 is b. The relationship between a and b is: 1 < a / b ≤ 2.

[0101] Compared to existing technologies, the locking lever of a traditional endoscope handle is located close to the edge of the housing 100, resulting in insufficient power arm length and requiring the user to apply greater operating force. This embodiment, by limiting the ratio range of distances a and b, can generate greater torque under the same operating force, making the adjustment of the screw connection of the locking structure 300 less strenuous.

[0102] Through the above settings, this application embodiment solves the problem of the laborious operation of the locking mechanism of the traditional endoscope operating handle 10. By optimizing the distance ratio between the end of the toggle member 320 and the edge of the housing 100, the lever principle is used to reduce the user's operating intensity and improve the convenience of one-handed operation.

[0103] It should be noted that when a / b > 2, the length of the actuating part 320 protruding from the housing 100 is too large, which may cause it to get caught or collide with surrounding objects (such as patient clothing, instrument tubing, and examination bed railings).

[0104] Furthermore, an excessively large 'a' can lead to insufficient rigidity, making it prone to bending or wobbling when force is applied, thus preventing the rotational force from being efficiently transmitted to the connector 310. In this case, even if a large force is applied, the contact pressure between the connector 310 and the knob structure 200 may be unstable due to the dispersion of force. Consequently, when locking, the angle may not be fixed due to insufficient pressure, and when unlocking, residual pressure may hinder the rotation of the knob, resulting in decreased reliability.

[0105] Secondly, when a / b > 2, the housing 100 needs to provide additional clearance or reinforce the support, resulting in an increase in the overall size and weight of the operating handle 10. When doctors hold it for a long time, the increased hand load exacerbates fatigue and is not conducive to doctors' use.

[0106] Reference Figure 4 , Figure 5As an optional implementation, the knob structure 200 includes a first knob 210 and a second knob 220. The first knob 210 is rotatably connected to the housing 100 and is used to control the rotation of the insertion part in a first direction. The second knob 220 is rotatably connected to the housing 100 and is located between the first knob 210 and the second knob 220, and is used to control the rotation of the insertion part in a second direction.

[0107] Reference Figure 6 The locking structure 300 is located between the second knob 220 and the housing 100, and its connector 310 is screwed to the second knob 220, such as by screw 311. The locking structure 300 drives the connector 310 to rotate through the toggle member 320 to adjust the degree of screwing between the connector 310 and the second knob 220.

[0108] The first direction refers to the rotation direction of the insertion part around the vertical axis, used to control the deflection of the endoscope in the horizontal plane. The second direction refers to the rotation direction of the insertion part around the horizontal axis, used to control the bending of the endoscope in the vertical plane.

[0109] The adjustment of the screw connection of the locking structure 300 refers to the adjustment of the locking force by changing the tightness of the threaded fit. Specifically, a trapezoidal thread or a rectangular thread can be used. The thread insertion depth directly affects the locking friction. The screw connection between the connector 310 and the second knob 220 means that the two form an axial force transmission path through the threaded pair. Specifically, a two-way threaded fit can be used, so that the rotational motion is converted into axial displacement.

[0110] Specifically, when the actuating element 320 is grasped and driven, the connecting element 310 rotates around its axis, and the engagement length of the threaded pair changes accordingly. When the engagement length of the threaded pair increases, the contact pressure between the second knob 220 and the housing 100 increases, forming a locking state, as shown in the reference. Figure 5 When the engagement length of the threaded pair decreases, the contact pressure decreases, and the unlocked state is restored.

[0111] Understandably, the independent rotation design of the first knob 210 and the second knob 220 allows for separate control of the movement of the insertion part in different directions, while the locking structure 300 only acts on the second knob 220 to avoid operational interference.

[0112] Compared to existing technologies, traditional locking levers require a lever mechanism to amplify the operating force, resulting in complex structures and laborious operation. This solution directly transmits rotational motion through a threaded pair, precisely converting the rotation angle into axial locking force. The operating torque only needs to overcome the friction of the threaded pair, eliminating the need for additional mechanical linkage devices. Furthermore, the self-locking characteristic of the threaded pair prevents locking failure due to misoperation, while the bidirectional thread design allows locking and unlocking to be achieved with a single rotational action.

[0113] Through the above-described configuration, this embodiment of the application solves the problem of excessive operating torque in traditional locking mechanisms. The force transmission path of the threaded pair significantly reduces the gripping force required for operation, while simplifying the number of components in the locking structure 300. The independent locking design of the second knob 220 avoids interference from the movement of the first knob 210, ensuring the independence of the dual-degree-of-freedom control. The linear force adjustment characteristics of the threaded fit allow for precise control of the locking force, ensuring locking reliability while avoiding wear on the mechanism caused by excessive tightening.

[0114] Reference Figure 6 As an optional implementation, the toggle member 320 has a mounting hole 321 with the opening of the mounting hole 321 facing the connector 310; one end of the connector 310 away from the knob structure 200 is located in the mounting hole 321 to connect the connector 310 and the toggle member 320.

[0115] The mounting hole 321 refers to a through hole or blind hole provided on the actuating member 320 and whose opening direction corresponds to the extension direction of the connector 310, used to accommodate the end of the connector 310 to achieve a physical connection between the two.

[0116] The end of the connector 310 away from the knob structure 200 is located in the mounting hole 321, which means that the end is fixedly or detachably connected to the toggle member 320 by inserting into the mounting hole 321, thereby transmitting the movement of the toggle member 320 to the connector 310.

[0117] Specifically, when the user holds the portion of the actuating element 320 protruding from the housing 100 and applies a rotational force, the actuating element 320, through the connection between the mounting hole 321 and the connector 310, causes the connector 310 to rotate around the rotation axis 201 of the knob structure 200. The rotation of the connector 310 can adjust its locking state with the knob structure 200, for example, by changing the frictional resistance through a threaded engagement. The connection method between the mounting hole 321 and the end of the connector 310 ensures effective transmission of operating force while preventing transmission failure due to loose connection.

[0118] Compared to existing technologies, traditional locking structures 300 typically employ independent linkages or gear transmission mechanisms, resulting in a large number of components and complex assembly. This solution, however, directly accommodates the end of the connector 310 through the mounting hole 321, simplifying the transmission path, reducing the number of intermediate connectors 310, and lowering assembly difficulty. Furthermore, the various connection methods between the mounting hole 321 and the connector 310 can be flexibly selected according to actual needs. For example, a snap-fit ​​structure can be used in scenarios requiring frequent disassembly and maintenance, while an interference fit can be used in scenarios with high reliability requirements.

[0119] Through the above-described configuration, this embodiment of the application achieves a compact connection between the actuating member 320 and the connecting member 310, effectively reducing energy loss during the transmission of operating force, while improving the stability of the locking structure 300 under repeated operation. The mating design between the mounting hole 321 and the connecting member 310 also avoids motion interference problems caused by assembly errors in traditional split connecting members 310, thereby improving the overall reliability of the operating handle 10.

[0120] In some embodiments, the wall of the mounting hole 321 of the toggle member 320 is bonded to the end of the connector 310 away from the knob structure 200.

[0121] Adhesion refers to fixing the connector 310 and the actuating member 320 with an adhesive, specifically epoxy resin or hot melt adhesive, to form a non-removable rigid connection. When adhesive is used, after the end of the connector 310 is inserted into the mounting hole 321, the gap is filled with adhesive and cured to form a stable connection interface.

[0122] In some other embodiments, the wall of the mounting hole 321 of the toggle member 320 is interference-fitted to the end of the connector 310 away from the knob structure 200.

[0123] An interference fit refers to a clamping force generated by the dimensional difference between the hole and the shaft. This can be achieved through tolerance fit design, for example, designing the diameter of the end of the connector 310 to be slightly larger than the inner diameter of the mounting hole 321. When an interference fit is used, the end of the connector 310 is pressure-fitted into the mounting hole 321, relying on friction to resist axial separation.

[0124] In some other embodiments, the end of the connector 310 away from the knob structure 200 is provided with a protrusion, and the mounting hole 321 of the toggle member 320 is provided with a groove, which is engaged with the protrusion to connect the two.

[0125] The engagement between the protrusion and the groove refers to a connection achieved through a mechanical interlocking structure. Specifically, a spherical protrusion can be engaged with an annular groove, or a rectangular protrusion can be engaged with a dovetail groove to form a detachable limiting connection. When the engagement between the protrusion and the groove is used, the protrusion at the end of the connector 310 is embedded in the groove of the hole wall of the actuating member 320, and the relative displacement is restricted by mechanical interlocking.

[0126] The above connection methods can all ensure that the toggle 320 and the connector 310 rotate synchronously, so that when the user holds the toggle 320, it drives the locking structure 300 to switch the locking state of the knob.

[0127] Compared to existing technologies, traditional locking structures 300 typically use welding or bolts to fix the connecting parts 310 and 320, resulting in complex assembly and difficult maintenance. This solution simplifies the connection structure through bonding, interference fit, or snap-fit ​​methods, reducing machining accuracy requirements and allowing for rapid disassembly and maintenance. For example, snap-fit ​​structures allow for repeated disassembly and assembly without damaging the parts, while interference fit connections eliminate the need for additional fasteners.

[0128] Through the above-described configuration, this embodiment of the application solves the problems of complex connection methods and high operating resistance in traditional locking structures 300. Adhesive bonding and interference fit provide a stable transmission interface, reducing energy loss during operation of the actuating element 320; the snap-fit ​​structure reduces connection gaps through mechanical interlocking, preventing locking failure due to loosening. These improvements allow users to switch locking states with less operating force, enhancing the user experience of the endoscope handle.

[0129] Reference Figure 4 , Figure 5 As an optional implementation, the toggle member 320 is provided with an anti-slip part 323, which is located on at least one side of the toggle member 320 along the rotation direction.

[0130] The anti-slip part 323 refers to a structure provided on the surface of the actuating element 320 to increase friction. Specifically, it can be achieved using textured surfaces, a rubber coating, or granular protrusions. By increasing the coefficient of friction of the contact surface, it prevents slippage during operation. The position of the anti-slip part 323 is designed according to the user's grip habits, providing a stable fulcrum for force application when the user's fingers contact different areas of the actuating element 320.

[0131] It should be noted that "along the direction of rotation" refers to the rotation direction of the knob structure 200. In the aforementioned direction, the anti-slip part 323 is located on at least one side of the actuating member 320, meaning the anti-slip part 323 is located around the periphery of the actuating member 320.

[0132] Reference Figure 4 , Figure 5 The anti-slip part 323 is located on the right side of the actuating member 320. It can be understood that the anti-slip part 323 can also be located on the left side of the actuating member 320, or it can be distributed on both the left and right sides of the actuating member 320.

[0133] Specifically, the anti-slip portion 323 may cover part or all of the outer surface of the actuator 320. For example, transverse stripes may be provided on the side of the actuator 320 away from the housing 100, or dense dotted protrusions may be provided on the side closer to the housing 100. When the user holds the actuator 320 and applies a rotational force, the anti-slip portion 323 reduces the relative slippage between the finger and the actuator 320 by increasing friction, thereby reducing the grip force required for operation.

[0134] Compared with existing technologies, traditional locking levers do not have an anti-slip structure, requiring a large gripping force to avoid slipping during operation. In contrast, this solution provides an anti-slip part 323 in the key contact area of ​​the lever 320, allowing users to achieve stable operation with less force.

[0135] Through the above settings, the embodiments of this application effectively solve the problem of unstable grip caused by the smooth surface of the toggle member 320, reduce the additional force required due to slippage during operation, and thus improve the reliability of locking state switching and operation comfort.

[0136] As an optional implementation, the connector 310 is a metal part and the actuating part 320 is a rubber part.

[0137] Understandably, the use of metal components in the connector fully utilizes the high strength and rigidity of metal materials, ensuring that deformation or damage does not easily occur during the transmission of rotational force. When the user applies force through the toggle element 320, the metal connector 310 can efficiently transmit the force to the knob structure 200, avoiding losses caused by deformation of the connector 310.

[0138] In addition, the actuator 320 is made of rubber. The rubber surface has appropriate friction, which can reduce slippage when doctors are wearing gloves, ensuring precise force application. Furthermore, the cushioning properties of the rubber material can reduce the rigid impact when fingers apply force, reduce hand pressure, and further alleviate hand fatigue.

[0139] As an optional implementation, the locking structure 300 also includes an extension (not shown) located on the side of the actuating member 320 away from the connecting member 310, the extension direction of which intersects the extension direction of the connecting member 310; the extension is configured for a user to hold to rotate the actuating member 320 and the connecting member 310.

[0140] Understandably, the extension length and intersection angle of the extension component can provide more flexible grip adaptability. For example, doctors with smaller hands can hold the end of the extension component closer to the actuator 320, while doctors with larger hands can hold the end of the extension component, without having to change the relative position of their hands and the handle, thus reducing the learning cost of operation.

[0141] In addition, the extension part can increase the connection area between the user and the toggle 320, thereby making it easier for the user to move the toggle 320 and thus easier for the user to lock the knob.

[0142] As an optional implementation, the extension member and the actuating member 320 are integrated into one piece.

[0143] Understandably, through the above settings, the rotational force applied by the user to the extension component can be directly and without loss transmitted to the actuating component 320, and then efficiently transmitted to the connecting component 310 through the actuating component 320.

[0144] In the description of the embodiments of this application, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, the connection of devices within two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0145] The terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "multiple" means two or more, unless otherwise precisely specified.

[0146] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or elements is not necessarily limited to those explicitly listed, but may include other steps or elements not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to the technical features of the device components or the entire device. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An operating handle for an endoscope, characterized in that, The operating handle, used for controlling the insertion portion of the endoscope, includes: case; A knob structure, rotatably connected to the housing, is used to control the insertion part of the endoscope; A locking structure is located between the knob structure and the housing, and the locking structure includes a connector and a toggle member; One end of the connector is rotatably connected to the knob structure, and the toggle element is located at the other end of the connector; At least a portion of the toggle protrudes from the housing, and the toggle is configured to be held by a user to rotate the connector relative to the knob structure, thereby switching the knob structure between an unlocked state and a locked state.

2. The operating handle for an endoscope according to claim 1, characterized in that, Along the extending direction of the connector, the actuating member includes a first end and a second end disposed opposite to each other, the first end being located between the connector and the second end; At least the second end protrudes from the housing.

3. The operating handle for an endoscope according to claim 2, characterized in that, Both the first end and the second end protrude from the housing; or, The second end protrudes from the housing, and the first end is located on the housing.

4. The operating handle for an endoscope according to claim 2, characterized in that, Along the thickness direction of the shell, The orthographic projections of the first end and the second end onto the housing are both located outside the housing; or, The orthographic projection of the second end onto the housing is located on the housing, while the orthographic projection of the first end onto the housing is located outside the housing.

5. The operating handle for an endoscope according to claim 1, characterized in that, The knob structure, the connector, and the toggle member all rotate along the rotation axis; Along the extending direction of the connector, the distance between the end of the toggle member away from the knob structure and the rotation axis is a, and the distance between the edge of the housing where the end of the toggle member away from the knob structure is located and the rotation axis is b. The relationship between a and b is: a > b.

6. The operating handle for an endoscope according to claim 1, characterized in that, The knob structure rotates along the rotation axis; Along the extending direction of the connector, the distance between the end of the toggle member away from the knob structure and the rotation axis is a, and the distance between the edge of the housing where the end of the toggle member away from the knob structure is located and the rotation axis is b. The relationship between a and b is: 1 < a / b ≤ 2.

7. The operating handle for an endoscope according to any one of claims 1-6, characterized in that, The knob structure includes: A first knob is rotatably connected to the housing. The first knob is used to connect with the insertion part to control the rotation of the insertion part in a first direction. The second knob is rotatably connected to the housing and located between the first knob and the housing. The second knob is used to connect to the insertion part to control the rotation of the insertion part in the second direction. The locking structure is located between the second knob and the housing, and the connector of the locking structure is screwed to the second knob; The locking structure is configured to rotate the connector under the action of the toggle member, so as to adjust the degree of screw connection between the connector and the second knob.

8. The operating handle for an endoscope according to any one of claims 1-6, characterized in that, The actuating element has a mounting hole, the opening of which faces the connector; The end of the connector away from the knob structure is located inside the mounting hole to connect the connector to the toggle member.

9. The operating handle for an endoscope according to claim 8, characterized in that, The wall of the mounting hole of the toggle member is bonded to the end of the connector away from the knob structure. or, The wall of the mounting hole of the toggle member is interference-fitted to the end of the connector away from the knob structure. or, The connector has a protrusion at the end away from the knob structure, and the mounting hole of the toggle member has a groove on its wall. The groove and the protrusion engage to connect the connector and the toggle member.

10. The operating handle for an endoscope according to any one of claims 1-6, characterized in that, The actuating element is provided with an anti-slip part, which is located on at least one side of the actuating element along the rotation direction.

11. An endoscope, characterized in that, It includes an insertion part and an operating handle as described in any one of claims 1-10, the operating handle being used to control the insertion part.

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