Shifting button, shifting rod device, operating handle and endoscope

Abstract

The invention discloses a shifting button, a shifting rod device, an operating handle and an endoscope, and relates to the field of medical instruments, the shifting button comprises a shifting piece and a limiting piece, the shifting piece is movably installed on a shifting rod body of the shifting rod device so as to be switched between an unlocking position and a locking position, and in the switching process of the shifting piece between the unlocking position and the locking position, the shifting rod body is locked by the limiting piece. The shifting rod device is switched between an unlocking mode and a locking mode by driving the locking piece of the shifting rod device, and the limiting piece is connected to the shifting piece. The limiting piece is connected with the shifting piece, the shifting piece and the shifting rod body can be mutually limited and locked through the limiting piece, the limiting and locking effect of the limiting piece can directly act on the shifting piece through the limiting piece, the situation that an intermediate structure is arranged between the limiting piece and the shifting piece is avoided, and transmission losses caused by the intermediate structure are reduced; the transmission efficiency and the response speed are improved, meanwhile, the number and the size of mechanical transmission gaps between the limiting piece and the shifting piece are reduced, and the problem that due to the fact that the transmission gaps are too large, transmission fails is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a dial button, a lever device, an operating handle and an endoscope. Background Art

[0002] Endoscope is a commonly used medical device, which is an inspection device that can directly enter the natural channels of the human body and provide medical staff with sufficient diagnostic information to treat diseases. The endoscope includes an operating handle. During the specific operation, the medical staff can control the operating handle to pull the active bending section at the front end of the insertion part through the traction rope to achieve bending action, thereby changing the direction of the front end of the insertion part.

[0003] During the operation, the medical staff who need to operate the endoscope have to keep pressing the lever of the operating handle with their hands, otherwise the insertion part will bend and deviate, which will make the operation of the endoscope extremely inconvenient and difficult to apply in actual use. Some existing operating handles have a self-locking structure, which has a poor locking effect and low reliability, and the actual operation reliability of the endoscope is low. Summary of the invention

[0004] In view of the shortcomings of the above related technologies, the present application provides a dial button, a lever device, an operating handle and an endoscope to at least partially solve the above technical problems.

[0005] In a first aspect, the present application provides a toggle button for a lever device of an endoscope, the toggle button comprising a toggle member and a limit member, the toggle member being movably mounted on a lever body of the lever device to switch between an unlocked position and a locked position, and in the process of switching the toggle member between the unlocked position and the locked position, the lever device is switched between an unlocked mode and a locked mode by driving the locking member of the lever device, the limit member being connected to the toggle member, and when the toggle member is in the locked position, the toggle member is limit-locked with the lever body by the limit member, and when the toggle member is in the unlocked position, the limit member and the lever body are unlocked.

[0006] In a second aspect, the present application provides a lever device for an endoscope, the lever device comprising a lever body, a dial button as described above, and a locking piece, the lever body being suitable for being connected to a traction mechanism of the endoscope, the dial piece being movably mounted on the lever body, the locking piece being connected to the dial piece, and when the dial piece is switching between an unlocked position and a locked position, the dial piece switches the lever device between an unlocked mode and a locked mode by driving the locking piece of the lever device.

[0007] In a third aspect, the present application provides an operating handle, including a traction mechanism and a lever device as described above, wherein a lever body is connected to the traction mechanism.

[0008] In a fourth aspect, the present application provides an endoscope, comprising an operating handle as described above.

[0009] The technical solution adopted by the present invention can achieve the following beneficial effects: the toggle member can drive the locking member, the locking member is arranged on the lever body, driven by the toggle member, and the locking member can switch the lever device between the unlocking mode and the locking mode. When the toggle member is in the locking position, the limiting member can be locked with the lever body to make the lever device in the locking mode. During this period, the locking action is that the toggle member directly drives the locking member to lock the lever device, and its transmission structure is simpler and more reliable, and the transmission effect is better. The limiting member is connected to the toggle member, and the limiting member can limit and lock the toggle member and the lever body to each other, and the limiting locking effect of the limiting member can be directly acted on the toggle member by the limiting member itself, avoiding the setting of an intermediate structure between the limiting member and the toggle member, reducing the transmission loss caused by the intermediate structure, improving the transmission efficiency and response speed, and also reducing the number and size of the mechanical transmission gap between the limiting member and the toggle member, avoiding the occurrence of problems such as transmission failure due to excessive transmission gap, and improving the operational reliability of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 is a schematic structural diagram of an endoscope shown in an exemplary embodiment of the present application; Figure 2 is a structural schematic diagram of a lever device shown in an exemplary embodiment of the present application; Figure 3 is a cross-sectional view of a lever device from another perspective shown in an exemplary embodiment of the present application; Figure 4 yes Figure 3 The enlarged view of point a in the figure; Figure 5 is a cross-sectional view of a lever device in another state shown in an exemplary embodiment of the present application; Figure 6 is a cross-sectional view of a lever device and a traction mechanism shown in an exemplary embodiment of the present application; Figure 7 is a structural schematic diagram of a lever body shown in an exemplary embodiment of the present application; Figure 8 is a structural schematic diagram of another lever body shown in an exemplary embodiment of the present application; Fig. 9is a structural schematic diagram of another lever body shown in an exemplary embodiment of the present application; Fig.10 is a cross-sectional view of another lever device shown in an exemplary embodiment of the present application; Fig.11 It is a cross-sectional view of another lever device shown in an exemplary embodiment of the present application.

[0012] In the figure: 1, endoscope; 100, lever device; 110, lever body; 111, pivot; 1111, first end; 1112, second end; 112, guide rod; 113, connecting rod; 1131, accommodating space; 1132, first connecting rod; 1133, second connecting rod; 114, recessed portion; 115, rotating shaft; 116, protective cover; 120, locking member; 121, driven portion; 122, stop portion; 123, strip hole; 130, dial button; 131, toggle member; 132, limit member; 1321, limit body; 1322, elastic member; 1323, installation cavity; 200, traction mechanism; 300, operating handle. DETAILED DESCRIPTION

[0013] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0014] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0015] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0016] Some existing endoscope operating handles have a self-locking function. Specifically, the operating handle has a positioning structure, and the positioning structure can provide a positioning effect for the self-locking force-bearing member. The positioning structure positions and constrains the self-locking force-bearing member, so that it is positioned at a certain position and realizes the self-locking function. However, there are many intermediate parts between the existing self-locking force-bearing member and the positioning structure. For example, the self-locking force-bearing member is two correspondingly arranged gears, and the traction mechanism is used to control the bending setting of the endoscope insertion part. The two gears can be separated or meshed with each other. When the two gears are meshed with each other, the toggle mechanism suitable for medical staff to toggle is locked, which realizes the self-locking operation. The positioning structure is a spring structure, and the toggle mechanism is elastically limited with the spring structure through the intermediate part. When the intermediate part is driven to limit with the spring structure, the toggle structure can be stably in a locked state. The transmission structure between the positioning structure and the self-locking force-bearing member is complex, the force loss is large, and the operation response is not very good. Moreover, with continuous use, the transmission efficiency and self-locking effect of the positioning structure and the self-locking force-bearing parts continue to decline, making them difficult to apply to complex surgical operations. The operating handle has defects such as requiring a large force to drive and insufficient switching smoothness, which seriously interfere with the normal progress of the operation.

[0017] This application provides a dial button 130, see Figure 1 as well as Figure 2 The dial button 130 is used for the lever device 100 of the endoscope 1. The lever device 100 is a structure that can drive the endoscope 1 to bend, and it can be operated by medical staff. The medical staff can use the dial button 130 to drive the lever device 100 to rotate, and then the lever device 100 drives the traction mechanism 200 of the endoscope 1, and the traction mechanism 200 can drive the insertion part of the endoscope 1 to bend. This will enable the distal end of the insertion part to face a preset direction for observation or diagnosis.

[0018] In the embodiments of this application, please refer to Figure 2 as well as Figure 3 The dial button 130 may include a toggle member 131 and a limiting member 132 , and the toggle member 131 and the limiting member 132 are connected to each other.

[0019] Please continue reading Figure 3 The toggle member 131 is movably mounted on the lever body 110 of the lever device 100. The lever body 110 may be a structure in the lever device 100 that is mainly used to operate the bending of the endoscope 1. The lever body 110 may be operated by medical personnel to rotate. The toggle member 131 may be mounted on the lever body 110. Therefore, the medical personnel may operate the toggle member 131 while toggling the lever body 110, thereby increasing the single-finger operation function of the medical personnel, avoiding the medical personnel from frequently changing hands or moving fingers during surgery, and reducing the difficulty of operation.

[0020] See also Figure 3 When the toggle member 131 moves relative to the lever body 110, the toggle member 131 switches between the unlocking position and the locking position. The unlocking position and the locking position are two different positions of the toggle member 131 relative to the lever body 110. In other words, the unlocking position and the locking position are both on the moving path of the toggle member 131, and the medical staff can easily toggle the toggle member 131 to switch between the two positions.

[0021] Furthermore, when the toggle member 131 switches between the unlocking position and the locking position, the toggle member 131 drives the locking member 120 of the toggle lever device 100 to switch between the unlocking mode and the locking mode. The locking member 120 is a component that can limit the locking or unlocking of the toggle lever body 110, and its locking function can be provided by damping limit, abutment limit, etc., without limitation. Specifically, Figure 3 as well as Figure 4 As shown in FIG. 1 , when the toggle member 131 is in the unlocking position, the lever device 100 is in the unlocking mode. Figure 5 As shown, Figure 5 The structure diagram of the toggle member 131 when it is in the locking position is shown. The toggle member 131 synchronously drives the locking member 120. When the locking member 120 moves to a certain position, it can provide a limiting effect for the lever body 110, which will stop the lever body 110 from moving, thereby completing the self-locking operation of the lever device 100. This solves the problem that the medical staff always presses the lever of the operating handle 300 with their hands to avoid bending and deviation of the insertion part, reduces the risk of wrong operation, and improves convenience. During this period, the locking effect is that the toggle member 131 directly drives the locking member 120 to lock the lever device 100. Its transmission structure is simpler and more reliable, and the transmission effect is better. The toggle member 131 is set to be able to directly drive the locking member 120, and the locking member 120 can directly realize the locking operation. The transmission structure of the locking operation is simple and reliable, which is conducive to reducing the volume of the lever device 100 and improving the transmission efficiency.

[0022] See also Figure 3, the limiter 132 is connected to the toggle member 131. Specifically, the limiter 132 can be fixedly connected to the toggle member 131. Among them, the fixed connection can be a detachable connection or a non-detachable connection. Exemplarily, the limiter 132 can be integrally formed with the toggle member 131, and the limiter 132 has elasticity, and can abut against the toggle lever body 110 for limiting. Alternatively, the limiter 132 is movably connected to the toggle member 131, and the limiter 132 can be movably arranged in a channel in the toggle member 131, and the limiter 132 can extend out of or extend into the channel, and the limiter 132 can extend out of the channel and abut against the toggle lever body 110 for limiting. The connection method between the limiter 132 and the toggle member 131 is not limited here. When the toggle member 131 is in the locked position, the toggle member 131 is locked with the toggle lever body 110 through the limiter 132, and the limiter 132 can achieve limit locking, so that the toggle member 131 can be locked to the locked position. When the toggle member 131 is in the unlocked position, the limiter 132 is unlocked from the lever body 110, so that the toggle member 131 is in the unlocked mode, that is, the medical staff can freely toggle the toggle member 131 to drive the lever body 110 to control the bending of the insertion portion of the endoscope 1. The limiter 132 is connected to the toggle member 131, and the limiter 132 can limit and lock the toggle member 131 and the lever body 110 to each other. The limiter 132 can directly act on the toggle member 131 by the limiter 132 itself, avoiding the setting of an intermediate structure between the limiter 132 and the toggle member 131, reducing the transmission loss caused by the intermediate structure, and improving the transmission efficiency and response speed. At the same time, the number and size of the mechanical transmission gap between the limiter 132 and the toggle member 131 are also reduced, avoiding the occurrence of problems such as transmission failure due to excessive transmission gap, and improving the operational reliability of the endoscope 1.

[0023] In one embodiment, please refer to Figure 3, a mounting cavity 1323 is provided in the limiting member 132, and the mounting cavity 1323 is adapted to at least a part of the lever body 110. The mounting cavity 1323 is suitable for passing through the lever body 110. Further, the mounting cavity 1323 has a guiding function, and the mounting cavity 1323 can extend in a specified direction, and the lever body 110 can pass through the mounting cavity 1323 in a specified direction, so that the lever body 110 can slide relative to the limiting member 132 in a specified direction, and prevent the lever body 110 from excessive displacement, shaking or deviating from a predetermined motion trajectory. The limiting member 132 is provided in the mounting cavity 1323, so that the limiting member 132 can cooperate with the lever body 110 in a limited position. Further, the limiting member 132 and the lever body 110 abut against each other, and the abutting surface of the lever body 110 abutting against the limiting member 132 is in the mounting cavity 1323, and the limiting member 132 can limit each other with the abutting surface. The installation cavity 1323 can improve the protection capability of the limit member 132 and the lever body 110, and provide stable support and positioning, so that the limit member 132 can more stably and accurately play a limiting role on the lever body 110 during operation, and effectively avoid the limit failure caused by external interference factors, such as dust.

[0024] In another embodiment, please refer to Figure 4 The limiting member 132 may further include a limiting body 1321 and an elastic member 1322. The limiting body 1321 may be made of metal, such as copper or stainless steel, which has wear-resistant properties and improves the reliability of the limiting member 132. The elastic member 1322 may be a spring or a spring sheet, etc., without limitation. The limiting body 1321 is movably disposed on the toggle member 131, and the elastic member 1322 is used to drive the limiting body 1321. The elastic member 1322 generates an elastic force, which drives the limiting body 1321 to the recessed portion 114 of the lever body 110, so that the limiting body 1321 can be locked with the recessed portion 114 of the lever body 110. The recessed portion 114 may be a groove, etc., without limitation. During this period, driven by the elastic member 1322, the limiting body 1321 and the recessed portion 114 are elastically matched, so that the limiting body 1321 can fit tightly with the recessed portion 114. Furthermore, during the switching process of the toggle member 131, when the medical staff applies greater force to the toggle member 131, the limiting body 1321 can overcome the elastic force of the elastic member 1322, so that the limiting body 1321 can be contacted and limited with the recessed portion 114, and the contact operation can be completed without setting other components, thereby improving the flexibility of use and reducing the operation steps. In addition, because the elastic fit can effectively buffer the impact force when facing dynamically changing external forces, it can avoid component damage caused by stress concentration caused by rigid connection.

[0025] Preferably, see Figure 3 , the movable path of the limiting body 1321 (such as Figure 3) and the active path of the toggle member 131 (as shown in L1 in Figure 3 There is an angle between the limit body 1321 and the toggle member 131, and the angle can be 0°, 45° or 90°, and there is no restriction. When the toggle member 131 moves along its own preset path, since the movable path of the limit body 1321 intersects with it, the limit body 1321 can produce a mutual limiting effect with the toggle member 131 at a specific time and position. The limit body 1321 can directly block the movement of the toggle member 131 in a vertical or intersecting direction, and effectively avoid the self-locking ability caused by the uncontrolled movement of the toggle member 131.

[0026] In some other cases, the limiter 132 may be an elastic structure disposed on the toggle member 131, such as an elastic block or a spring, and the limiter 132 may be deformed, and the limiter 132 may elastically cooperate with the recessed portion 114. Furthermore, the limiter 132 may be integrated with the toggle member 131 to improve the limiter effect and integration, reduce the number of components, and improve assembly efficiency.

[0027] To achieve the above-mentioned and other related purposes, the present application provides a lever device 100. Figure 2 The lever device 100 is used for the endoscope 1. The lever device 100 can drive the insertion portion of the endoscope 1 to bend, and the lever device 100 can be operated by medical staff.

[0028] See also Figure 6 The lever device 100 may include a lever body 110, a locking member 120, and a button 130 as in any of the above solutions, wherein the button 130 connects the locking member 120 and the lever body 110. In this way, the lever device 100 has the beneficial effects of any of the above solutions, which will not be described in detail.

[0029] Please continue reading Figure 6 The lever body 110 is suitable for connecting with the traction mechanism 200 of the endoscope 1. Furthermore, the connection between the lever body 110 and the traction mechanism 200 is a transmission connection, that is, the lever body 110 can drive the traction mechanism 200, and the traction mechanism 200 can directly drive the distal end of the insertion portion of the endoscope 1 to bend toward a specified direction. The toggle member 131 is movably mounted on the lever body 110, and the locking member 120 is connected to the toggle member 131. When the toggle member 131 switches between the unlocked position and the locked position, the toggle member 131 drives the locking member 120 of the lever device 100 to switch the lever device 100 between the unlocked mode and the locked mode.

[0030] Please continue reading Figure 6When the toggle member 131 is in the locked position, the toggle member 131 is locked with the lever body 110 through the limit member 132, and the limit member 132 can achieve limit locking, so that the toggle member 131 can be locked to the locked position. Further, the traction mechanism 200 may include a housing and a traction wheel, and the toggle member 131 can drive the locking member 120 to abut against the housing of the traction mechanism 200 or the operating handle 300, etc. Static friction is generated between the housing and the locking member 120, and the static friction can limit the relative movement between the locking member 120 and the housing, thereby limiting the rotation of the lever body 110 relative to the housing. At this time, the lever device 100 can be locked, and the traction wheel of the traction mechanism 200 and the insertion portion of the endoscope 1 can remain in their original state. When the toggle member 131 is in the unlocked position, the limit member 132 is unlocked from the lever body 110, so that the toggle member 131 is in the unlocked mode, that is, the medical staff can freely toggle the toggle member 131 to drive the insertion part of the endoscope 1 to rotate in the specified direction. This can solve the problem that the medical staff needs to keep pressing the lever of the operating handle 300 with their hands during the operation, reduce the risk of wrong operation, and prevent the insertion part of the endoscope 1 from bending or deflecting, etc., which improves the convenience of operation for medical staff and enables them to focus more on the medical operation itself. In addition, this simple transmission structure is not only highly reliable and reduces the hidden dangers of failure caused by complex transmission components, but also helps to reduce the overall volume of the lever device 100.

[0031] In addition, the smaller lever device 100 can make the endoscope 1 more compact and lightweight, making it easier for medical staff to hold and operate. At the same time, the simple transmission structure can effectively improve the transmission efficiency, making the operation response faster and more accurate.

[0032] In the embodiments of this application, please refer to Figure 7 The lever body 110 may include a pivot 111, a guide rod 112 and a connecting rod 113. The pivot 111 is transmission-connected to the traction mechanism 200, and the connecting rod 113 is connected between the guide rod 112 and the pivot 111. The connecting rod 113 can extend the lever arm. According to the lever principle, the longer the lever arm, the greater the torque generated under the same force. The toggle member 131 is sleeved on the guide rod 112 and slides with the guide rod 112, and the locking member 120 is rotationally connected to the connecting rod 113. The guide rod 112 is penetrated by the toggle member 131 and slides with the guide rod 112, and the locking member 120 is rotationally connected to the connecting rod 113. The guide rod 112 plays a guiding role, avoiding the displacement or shaking of the toggle button 130. The guide rod 112 can ensure that the slight displacement of the toggle button 130 can be accurately controlled, thereby improving the movement accuracy and stability.

[0033] In a more specific implementation, please continue to refer to Figure 7, the pivot 111, the connecting rod 113 and the guide rod 112 are integrally formed. Furthermore, the pivot 111, the connecting rod 113 and the guide rod 112 can be integrally injection molded. It is understandable that the integral molding setting can make it possible for there to be no assembly gap or transmission gap between the various parts of the lever body 110, so that the external force can be more evenly borne. This can reduce the phenomenon of local stress concentration, thereby reducing the risk of deformation or damage to the structure. In addition, the lever body 110 can be detachably connected to the traction mechanism 200, and the setting of the integrally formed pivot 111, the connecting rod 113 and the guide rod 112 can be directly detachably set together with the traction mechanism 200, thereby improving the disassembly efficiency of the lever body 110 and ensuring the maintenance effect of the lever device 100.

[0034] In another embodiment, please refer to Figure 7 , the pivot 111 and the connecting rod 113 are detachably connected. The connection method between the pivot 111 and the connecting rod 113 can be a threaded connection, a snap connection, etc., and is not limited. The connecting rod 113 can drive the pivot 111, and the pivot 111 rotates around its own axis so that the pivot 111 drives the traction mechanism 200. At the same time, the pivot 111 and the connecting rod 113 can be directly detached, which can conveniently separate the pivot 111 from the connecting rod 113 and inspect, repair or replace individual components. At the same time, it can also facilitate the assembly of the lever device 100 and improve the assembly efficiency of the endoscope 1.

[0035] In this example, please continue to refer to Figure 7 The pivot 111 has a first end 1111 and a second end 1112 that are far from each other, and at least one of the first end 1111 and the second end 1112 can be connected to the engagement rod 113. This enables the engagement rod 113 to drive the pivot 111 to rotate under the drive of the guide rod 112, so that the distal end of the insertion portion of the endoscope 1 bends toward a specified direction.

[0036] In one embodiment, please refer to Figure 7 , the second end 1112 extends out of the traction mechanism 200 and connects the locking member 120 and the dial button 130. At least part of the structure of the pivot 111 is in the traction mechanism 200 and can drive the traction mechanism 200. The pivot 111 can ensure the effective transmission of force or torque to the traction mechanism 200, which can prevent external contaminants from entering the traction mechanism 200 and improve the protection capability. Among them, the transmission method between the pivot 111 and the traction mechanism 200 can be a spline, a gear or other connection method, and is not limited. In the pivot 111, at least the second end 1112 is extended out of the traction mechanism 200, and it can be connected to the locking member 120 and the dial button 130. This arrangement can make the locking member 120 and the dial button 130 arranged outside the traction mechanism 200, which is convenient for installation and detection and improves flexibility.

[0037] In another embodiment, see Figure 8 , the connecting rod 113 may include a first connecting rod 1132 and a second connecting rod 1133, the first connecting rod 1132 and the second connecting rod 1133 are respectively connected to the opposite ends of the guide rod 112, the first end 1111 is connected to the end of the first connecting rod 1132 away from the guide rod 112, and the second end 1112 is connected to the end of the second connecting rod 1133 away from the guide rod 112. The first connecting rod 1132 and the second connecting rod 1133 are respectively connected to the opposite ends of the guide rod 112, which improves the stability of the entire structure around the pivot 111. The medical staff drives the guide rod 112 through the toggle 131, and when it runs around the pivot 111 or bears external force, the first connecting rod 1132 and the second connecting rod 1133 can generate effective support and constraint. The first connecting rod 1132 and the second connecting rod 1133 can disperse and transmit forces from different directions to prevent the guide rod 112 from excessive torsion or displacement at the pivot 111 due to uneven force.

[0038] It is understandable that the recessed portion 114 can be provided on a side of the guide rod 112 close to the connecting rod 113, that is, the recessed portion 114 can be provided on the end of the connecting rod 113 close to the guide rod 112. Furthermore, when the connecting rod 113 can include a first connecting rod 1132 and a second connecting rod 1133, the number of the recessed portion 114 and the locking member 120 can be at least two, and at least two recessed portions 114 and at least two locking members 120 can be provided on the first connecting rod 1132 and the second connecting rod 1133, respectively. The medical staff can toggle the toggle member 131 in two opposite directions, and the toggle member 131 can drive at least one locking member 120 to abut against the traction mechanism 200 to achieve the locking operation.

[0039] In another embodiment, the connecting rod 113 includes a first connecting rod 1132 and a second connecting rod 1133. While the first connecting rod 1132 and the second connecting rod 1133 are respectively connected to the opposite ends of the guide rod 112, the second end 1112 extends out of the traction mechanism 200 and connects the locking piece 120 and the dial button 130. It can take into account both stability and installation and detection flexibility, which will not be elaborated here.

[0040] In the examples of this application, please refer to Fig. 9, the connecting rod 113 has a containing space 1131, the locking member 120 is contained in the containing space 1131, and the containing space 1131 can be adapted to the locking member 120. The toggle member 131 can drive the locking member 120 so that the locking member 120 extends out of the containing space 1131 and cooperates with the traction mechanism 200 in a limited position. Exemplarily, the traction mechanism 200 may include a housing and a traction wheel, and one end of the locking member 120 can extend out of the containing space 1131 and abut against the housing of the traction mechanism 200 to limit the relative rotation between the lever device 100 and the housing of the traction mechanism 200. At the same time, the traction wheel of the traction mechanism 200 is also locked in a limited position, that is, the traction wheel cannot rotate relative to the housing, thereby realizing the locking operation of the insertion portion of the endoscope 1. This setting utilizes the accommodating space 1131 by placing the locking member 120 in the accommodating space 1131. The intervals between the components are reduced, so that the lever body 110 has a smaller volume, and the use stability and protection capability of the locking member 120 are improved.

[0041] In some other cases, the locking member 120 can also extend out of the accommodating space 1131 and directly abut against the gripping portion of the operating handle 300 to limit the position. The gripping portion can be a portion of the operating handle 300 that is suitable for the user to hold, so that the lever device 100 is limited and locked, which will not be elaborated here.

[0042] Preferably, please refer to Figure 2 The lever body 110 may further include a protective cover 116, which is detachably connected to the engagement rod 113. Further, the protective cover 116 can be connected to the side of the engagement rod 113 away from the traction mechanism 200, and the protective cover 116 is detachably connected to the engagement rod 113 to shield the accommodating space 1131. This arrangement can effectively prevent foreign objects such as dust and debris from entering the accommodating space 1131. The protective cover 116 can improve the protection capability, which prolongs the service life of the engagement rod 113 and the locking member 120.

[0043] See also Figure 6 , the length of the locking member 120 is less than the length of the connecting rod 113. Compared with the existing structure, the transmission rod is longer and the transmission amplitude is larger, resulting in lower rotation efficiency. The length of the locking member 120 is smaller, and its rotation amplitude is smaller, which can transmit faster. This also enables the locking member 120 to be built into the connecting rod 113, reducing the volume of the accommodating space 1131 and improving the structural strength of the connecting rod 113.

[0044] Please continue reading Figure 6The locking member 120 has a driven portion 121 and a stop portion 122. A rotating shaft 115 is disposed in the accommodating space 1131. The driven portion 121 and the stop portion 122 are both rotatably disposed around the rotating shaft 115. The driven portion 121 is connected to the toggle member 131. The locking member 120 has a bar hole 123. The rotating shaft 115 is disposed in the bar hole 123. The rotating shaft 115 can move in the bar hole 123. When the toggle member 131 switches from the unlocking position to the locking position, the distance between the rotating shaft 115 and the driven portion 121 gradually increases. Further, as Fig.10 As shown, at the initial stage of the movement of the toggle member 131, the distance between the rotating shaft 115 and the driven part 121 is small. The driven part 121 is set to rotate with a small amplitude, and the stop part 122 rotates with a large amplitude, and the stop part 122 has a faster effect, which can improve the response speed of the lever device 100, reduce the finger toggle stroke of medical staff, reduce the difficulty of operation, and improve safety. Fig.11 As shown, in the later stage of the activity of the toggle member 131, the distance between the rotating shaft 115 and the driven portion 121 gradually increases to a maximum value. Based on the rotating shaft 115, compared with the stop portion 122, the driven portion 121 has a larger force arm, which can maintain the locking state with less force, thereby improving the stability effect.

[0045] It is understandable that the driven portion 121 and the stop portion 122 can be disposed on opposite sides of the rotating shaft 115, and further, the driven portion 121 and the stop portion 122 can be disposed on opposite ends of the locking member 120. In another embodiment, the driven portion 121 and the stop portion 122 can be disposed on the same side of the rotating shaft 115, such as the driven portion 121 is located between the stop portion 122 and the rotating shaft 115, which will not be described in detail herein.

[0046] In some other cases, a protrusion is provided on at least one side of the locking member 120, and the protrusion can cooperate with the groove or through hole of the connecting rod 113 so that the locking member 120 can be rotatably arranged relative to the connecting rod 113, which is not elaborated here.

[0047] To achieve the above-mentioned purpose and other related purposes, the present application provides an operating handle 300. Figure 1 The operating handle 300 includes the lever device 100 and the traction mechanism 200 as described above, and the traction mechanism 200 is connected to the lever body 110. In this way, the operating handle 300 has the beneficial effects of any of the above solutions, which will not be described in detail.

[0048] To achieve the above-mentioned and other related purposes, the present application provides an endoscope 1, please refer to Figure 1, the endoscope 1 includes the aforementioned operating handle 300. In this way, the endoscope 1 has the beneficial effects of any of the aforementioned solutions, which will not be repeated here. Among them, the endoscope 1 can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the type of the endoscope 1 and the implementation scenario of the endoscope 1.

[0049] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0050] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0051] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dial button for a lever device of an endoscope, characterized in that: The dial button comprises: a toggle member, the toggle member being movably mounted on the lever body of the lever device to switch between an unlocking position and a locking position, and in the process of switching between the unlocking position and the locking position, the toggle member drives the locking member of the lever device to switch the lever device between an unlocking mode and a locking mode; and a limit member, wherein the limit member is connected to the toggle member, and when the toggle member is in the locking position, the toggle member is locked with the toggle lever body through the limit member, and when the toggle member is in the unlocking position, the limit member and the toggle lever body are unlocked.

2. The dial button according to claim 1, characterized in that: The limiting member is provided with an installation cavity, the installation cavity is suitable for the lever body to pass through, and the limiting member is provided in the installation cavity so that the limiting member can cooperate with the lever body in a limiting manner; And / or, the limiting member further comprises a limiting body and an elastic member, the limiting body is movably arranged on the shifting member, and the elastic member is used to drive the limiting body so that the limiting body can be locked with the recessed portion of the shifting rod body.

3. The dial button according to claim 2, characterized in that: The movable path of the limiting body intersects with the movable path of the shifting member.

4. A lever device for an endoscope, characterized in that: The lever device comprises: A lever body, wherein the lever body is suitable for connecting with a traction mechanism of the endoscope; The dial button according to any one of claims 1 to 3, wherein the toggle member is movably mounted on the toggle rod body; The locking member is connected to the toggle member. During the switching process between the unlocking position and the locking position, the toggle member drives the locking member of the lever device to switch the lever device between the unlocking mode and the locking mode.

5. The lever device according to claim 4, characterized in that: The lever body includes a pivot, a guide rod and a connecting rod, the pivot is transmission-connected to the traction mechanism, the connecting rod is connected between the guide rod and the pivot, the toggle member is sleeved on the guide rod and slidably cooperates with the guide rod, and the locking member is rotationally connected to the connecting rod, wherein: The pivot, the connecting rod and the guide rod are integrally formed; Alternatively, the pivot is detachably connected to the engagement rod.

6. The lever device according to claim 5, characterized in that: The pivot has a first end and a second end that are remote from each other, wherein: The second end extends out of the traction mechanism and is connected to the locking member and the dial button; And / or, the connecting rod includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are respectively connected to the opposite ends of the guide rod, the first end is connected to the end of the first connecting rod away from the guide rod, and the second end is connected to the end of the second connecting rod away from the guide rod.

7. The lever device according to claim 5, characterized in that: The connecting rod has an accommodating space inside, the locking member is accommodated in the accommodating space, and the toggle member can drive the locking member so that the locking member extends out of the accommodating space and cooperates with the traction mechanism in a limiting manner; And / or, the lever body further comprises a protective cover, and the protective cover is detachably connected to the engagement rod; And / or, the length of the locking member is smaller than the length of the engagement rod.

8. The lever device according to claim 7, characterized in that: The locking member has a driven portion and a stop portion, a rotating shaft is arranged in the accommodating space, the driven portion and the stop portion are both rotatably arranged around the rotating shaft, and the driven portion is connected to the toggle member; The locking member is provided with a strip hole, the rotating shaft is passed through the strip hole, the rotating shaft can move in the strip hole, and when the toggle member switches from the unlocking position to the locking position, the distance between the rotating shaft and the driven part gradually increases.

9. An operating handle, characterized in that: include: Traction mechanism; And the lever device according to any one of claims 4 to 8, wherein the lever body is connected to the traction mechanism.

10. An endoscope, characterized in that: Comprising the operating handle as claimed in claim 9.

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