Endoscope control element, self-locking device, handle and endoscope

Abstract

The present invention relates to the technical field of endoscopes, and in particular to a control element, a self-locking device, a handle and an endoscope of an endoscope, comprising a mounting base and an elastic member, wherein the mounting base is provided with an escape zone, the escape zone is a hole or a groove penetrating the mounting base, the elastic member is provided corresponding to the escape zone, one end of the elastic member is connected to the mounting base, the other end of the elastic member is a free end, the projection of the elastic member on the plane where the mounting base is located covers part of the escape zone, and a first protrusion is provided on the elastic member. The present invention improves the control element corresponding to the spring sheet, redesigns the elastic member of the deformed part, increases the upper limit of the deformation of the elastic member, reduces the corresponding resistance when the elastic member produces a unit deformation, and at the same time, increases the activity space of the elastic member for elastic deformation, reduces the resistance of the elastic member when a large elastic deformation occurs, so that medical personnel can easily complete the state switching control and improve the convenience of using the endoscope.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to a control element, a self-locking device, a handle and an endoscope of an endoscope. Background Art

[0002] Endoscopes are currently widely used as medical instruments. When using an endoscope, medical personnel control the position of the endoscope lens in the human body by turning a dial, and use a self-locking device to assist in the operation of the endoscope.

[0003] In the existing endoscope self-locking devices, such as the self-locking device suitable for endoscopes disclosed in Chinese Patent Publication No. CN111202488A, a spring sheet is used to help determine whether the switching control between the self-locking state and the unlocking state is completed. However, in actual use, medical personnel encounter great resistance when switching between the self-locking state and the unlocking state, causing inconvenience in use. Summary of the invention

[0004] The purpose of this application is to provide a method to solve the above technical problems existing in the prior art, which mainly includes the following four aspects:

[0005] In a first aspect, the present application provides a control element for an endoscope, comprising a mounting base and an elastic member, wherein the mounting base is provided with an avoidance zone, wherein the avoidance zone is a hole or a groove penetrating the mounting base, wherein the elastic member is provided corresponding to the avoidance zone, wherein one end of the elastic member is connected to the mounting base, and the other end of the elastic member is a free end, wherein the projection of the elastic member on the plane where the mounting base is located covers part of the avoidance zone, and wherein a first protrusion is provided on the elastic member.

[0006] Furthermore, a mounting hole is provided on the mounting base.

[0007] Furthermore, the elastic member is integrated with the mounting base.

[0008] Furthermore, the elastic member includes a first section and a second section, the second section serves as a free end, the second section is connected to the mounting base through the first section, and the first protrusion is arranged on the second section; the first section is located on the extension line of the second section, or an L-shaped structure is formed between the first section and the second section.

[0009] Furthermore, the first protrusion includes a first inclined surface and a second inclined surface, the slope of the second inclined surface is greater than the slope of the first inclined surface, and the second inclined surface is located between the first inclined surface and the first section.

[0010] Furthermore, the second section further includes a first straight portion connected to the first inclined surface, and a second straight portion connected to the second inclined surface, and the first straight portion is connected to the first section.

[0011] Furthermore, the elastic member also includes a third section, one end of the second section is connected to the mounting base through the first section, and the other end of the second section is connected to the mounting base through the third section, and the elastic member has a U-shaped structure.

[0012] Further, a second protrusion is provided on the first section, and / or a third protrusion is provided on the third section.

[0013] According to a second aspect of the present application, there is provided a self-locking device of an endoscope, comprising a driving gear, a driven gear, a paddle and the above-mentioned control element, wherein the driven gear is located between the driving gear and the paddle, the driving gear and the driven gear are coaxially arranged, the paddle is slidably connected to the driven gear, and the sliding stroke between the paddle and the driven gear comprises a first position state and a second position state, in the first position state, the driving gear is separated from the driven gear, in the second position state, the driving gear is meshed with the driven gear, the control element is arranged on the side wall of the driven gear close to the paddle, and a limit piece is provided on the paddle, and the limit piece is used to cooperate with the elastic piece to realize locking of the first position state and / or the second position state.

[0014] Furthermore, the first protrusion is used to cooperate with the limiting member to achieve locking of the first position state, and the limiting member is used to cooperate with the elastic member to achieve locking of the second position state.

[0015] Furthermore, a protrusion is provided on the driven gear, a slide groove is provided on the protrusion, a slider matching the slide groove is provided in the slide groove, and the slider is connected to the paddle; the driving gear and the driven gear are coaxially arranged on the rotating shaft, the driven gear is axially slidingly connected to the rotating shaft, the driving gear is coaxially rotationally connected to the rotating shaft, and the angle between the slide groove and the central axis of the rotating shaft is an acute angle.

[0016] Furthermore, the protrusion is arranged on a side wall of the driven gear close to the paddle, and the protrusion is arranged through the avoidance area.

[0017] Furthermore, a mounting column matching with the mounting hole is provided on the side wall of the driven gear close to the paddle.

[0018] A third aspect of the present application provides a handle of an endoscope, comprising a shell, a lever and the above-mentioned self-locking device, wherein the driving gear and the driven gear are arranged in the shell, the lever is connected to the paddle, and the lever is at least partially arranged outside the shell.

[0019] A fourth aspect of the present application provides an endoscope, comprising the above-mentioned self-locking device, or the above-mentioned handle.

[0020] Compared with the prior art, the present invention has at least the following technical effects:

[0021] The present invention improves the control element corresponding to the spring sheet, redesigns the elastic part of the deformation part, increases the upper limit of the deformation amount of the elastic part, reduces the corresponding resistance when the elastic part produces a unit deformation amount, and at the same time, increases the activity space of the elastic part for elastic deformation, reduces the resistance of the elastic part when a large elastic deformation amount occurs, so that medical personnel can easily and quickly complete the state switching control, and improve the convenience of using the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention 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.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the control element of the present invention;

[0024] Figure 2 is a side view of a control element of the present invention;

[0025] Figure 3 is a second structural schematic diagram of the control element of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the self-locking device (hidden rotating shaft) of the present invention;

[0027] Figure 5 It is an exploded view of the self-locking device (hidden rotating shaft) of the present invention;

[0028] Figure 6 is an exploded view of the self-locking device of the present invention (showing the rotating shaft);

[0029] Figure 7 It is a cross-sectional view of the self-locking device (hidden rotating shaft) of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the driven gear and the control element of the present invention;

[0031] Fig. 9 yes Figure 8 Side view of

[0032] Fig.10 It is a schematic diagram of the connection structure between the paddle and the lever;

[0033] Fig.11 It is a diagram of the use state of the self-locking device of the present invention;

[0034] Fig.12 It is a schematic structural diagram of the endoscope of the present invention;

[0035] In the figure,

[0036] 100, control element; 110, mounting base; 120, elastic member; 121, first protrusion; 1211, first inclined plane; 1212, second inclined plane; 122, second protrusion; 123, third protrusion; 126, first section; 127, second section; 1271, first straight portion; 1272, second straight portion; 128, third section; 130, avoidance area; 140, mounting hole; 210, driving gear; 220, driven gear; 221, bump; 222, slide groove; 223, mounting column; 224, slider; 230, paddle; 231, limit member; 240, lever; 250, shaft; 40, housing. DETAILED DESCRIPTION

[0037] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] In addition, in the present invention, "proximal end" and "distal end" refer to the far and near positions of the structure relative to human operation in the use environment, so as to facilitate the description of the positional relationship between components and facilitate understanding; for the same component, "proximal end" and "distal end" are the relative positional relationship of the component, not absolute; therefore, it should be understood from the perspective of realizing the principles of the present invention, and should not deviate from the essence of the present invention.

[0042] Embodiment 1:

[0043] The present application embodiment provides a control element 100 of an endoscope, such as Figure 1 to Figure 3 As shown, it includes a mounting base 110 and an elastic member 120, the mounting base 110 is provided with an avoidance area 130, the avoidance area 130 is a hole or a groove penetrating the mounting base 110, the elastic member 120 is provided corresponding to the avoidance area 130, one end of the elastic member 120 is connected to the mounting base 110, and the other end of the elastic member 120 is a free end, the projection of the elastic member 120 on the plane where the mounting base 110 is located covers part of the avoidance area 130, and the elastic member 120 is provided with a first protrusion 121.

[0044] In the existing endoscope self-locking device, a spring sheet is generally used to help determine whether the switching control between the self-locking state and the unlocking state is completed, but the spring sheet is constrained by its own structure (see a self-locking device suitable for an endoscope disclosed in Chinese Patent Publication No. CN111202488A), and both ends of the elastic deformation part are connected to the spring sheet body, resulting in a limited deformation amount of the elastic deformation part. When performing the switching control between the self-locking state and the unlocking state, the elastic deformation part needs to be forced to produce a larger deformation amount to complete the switching control. The larger the deformation amount, the greater the resistance generated by the spring sheet for the spring sheet with a limited deformation amount, which leads to greater resistance when the medical staff performs the state switching control, causing inconvenience to the medical staff's state switching control; in the present embodiment, the control element 100 corresponding to the spring sheet is improved, and the elastic member 120 of the deformation part is redesigned so that One end of the elastic member 120 is connected to the mounting base 110, and the other end of the elastic member 120 is a free end, so as to reduce the constraint of the mounting base 110 on the elastic member 120, so that the upper limit of the deformation of the elastic member 120 is increased, and the corresponding resistance when a unit deformation is generated is reduced. At the same time, by allowing the projection of the elastic member 120 on the plane where the mounting base 110 is located to cover part of the avoidance area 130, the activity space of the elastic member 120 when it is deformed will not be restricted by the mounting base 110, and the avoidance area 130 is used to increase the activity space of the elastic member 120 for elastic deformation, so that when the elastic member 120 is elastically deformed to the plane where the mounting base 110 is located, the mounting base 110 will not increase the deformation resistance positively, thereby further reducing the resistance of the elastic member 120 when a large elastic deformation occurs, so that medical personnel can easily and quickly complete the state switching control, thereby improving the convenience of using the endoscope.

[0045] Specifically, Figure 1 and Figure 3 As shown, the mounting base 110 is provided with a mounting hole 140. Figure 7 and Figure 8 As shown, by setting a mounting hole 140 on the mounting base 110 to cooperate with the mounting column 223 on the driven gear 220, the control element 100 can be quickly installed and fixed on the driven gear 220; in order to improve the installation stability between the control element 100 and the driven gear 220, the number of mounting holes 140 on the mounting base 110 can also be increased, and mounting holes 140 are respectively set on both sides of the avoidance area 130 to ensure the connection stability between the control element 100 and the driven gear 220.

[0046] Specifically, the elastic member 120 is integrated with the mounting base 110. Preferably, the elastic member 120 and the mounting base 110 are made of metal sheets by integral stamping to improve the manufacturing efficiency of the control element 100; in some embodiments, the elastic member 120 and the mounting base 110 may be made separately and then fixedly connected together.

[0047] Specifically, Figure 3 As shown, the elastic member 120 includes a first section 126 and a second section 127, the second section 127 being a free end, the second section 127 being connected to the mounting base 110 through the first section 126, and the first protrusion 121 being arranged on the second section 127; the first section 126 being located on the extension line of the second section 127, or an L-shaped structure being formed between the first section 126 and the second section 127. By arranging the first protrusion 121 on the second section 127 away from the mounting base 110, the projection of the matching elastic member 120 on the plane where the mounting base 110 is located covers part of the avoidance area 130, so that the first protrusion 121 is obviously protruded from the plane where the mounting base 110 is located, so that the first protrusion 121 and the elastic member 120 are more easily matched with the limiting member 231 to realize locking of the first position state and the second position state.

[0048] Specifically, the first protrusion 121 includes a first inclined surface 1211 and a second inclined surface 1212. The slope of the second inclined surface 1212 is greater than that of the first inclined surface 1211. The second inclined surface 1212 is located between the first inclined surface 1211 and the first section 126. During installation and use, the self-locking device of the endoscope includes a first position state in a self-locking state and a second position state in an unlocked state. In the self-locking state, the limiter 231 is located on the side of the first inclined surface 1211 of the first protrusion 121. In the unlocked state, the limiter 231 is located on the side of the second inclined surface 1212 of the first protrusion 121. Therefore, when switching between the unlocked state and the self-locking state, since the slope of the first inclined surface 1211 is small, the operator only needs a small thrust to push the limiter 231 over the first protrusion 121 to complete the switch from the self-locking state to the unlocked state, avoiding the thrust. On the elastic member 120, the elastic member 120 is prevented from being deformed and damaged under the thrust and the extrusion of the mounting base 110, thereby increasing the service life of the equipment; and when switching from the unlocked state to the self-locking state, due to the large slope of the second inclined surface 1212, the operator needs to overcome a large resistance to push the limit member 231 over the first protrusion 121, so that the limit member 231 can give the operator an obvious prompt when it passes the first protrusion 121. At the same time, since the side where the second inclined surface 1212 is located corresponds to the free end, the force applied to the elastic member 120 will not cause extrusion to the elastic member 120, thereby ensuring the safe use of the elastic member 120.

[0049] Specifically, the second section 127 also includes a first straight portion 1271 connected to the first inclined surface 1211, and a second straight portion 1272 connected to the second inclined surface 1212, and the first straight portion 1271 is connected to the first section 126. By arranging the first straight portion 1271 and the second straight portion 1272 at both ends of the first protrusion 121, it is convenient for the limiter 231 to move smoothly into place when switching between the self-locking state and the unlocking state, thereby improving the comfort and convenience of use. In some embodiments, in order to facilitate the state locking of the self-locking device, the second section 127 can be tilted, with the plane where the installation base 110 is located as a reference, the first straight portion 1271 is at a high point, and the second straight portion 1272 is at a low point.

[0050] Specifically, the elastic member 120 also includes a third section 128, one end of the second section is connected to the mounting base through the first section, and the other end of the second section is connected to the mounting base through the third section, and the elastic member is in a U-shaped structure. Since a protrusion 221 is provided on the driven gear 220 in the self-locking device, the elastic member in a U-shaped structure can cooperate with the protrusion 221 to realize the rapid positioning and installation between the control element and the driven gear 220, and even through reasonable settings, the gap between the control element and the driven gear 220 realizes the mutual limitation of the two. In addition, the second section 127 of the U-shaped structure serves as a free end, and the second section 127 serves as a sliding track of the limiting member 231, which can also increase the upper limit of the deformation of the elastic member 120, reduce the resistance of the limiting member 231 when it passes over the first protrusion 121, and improve the convenience of using the device.

[0051] In some embodiments, a second protrusion 122 may be further provided on the first section 126 , and the second protrusion 122 is used to increase the elastic potential energy of the elastic member 120 , thereby ensuring the lock core of the endoscope is in the unlocked state and the self-locked state.

[0052] In some embodiments, a third protrusion 123 may be further provided on the third section 128 , and the third protrusion 123 is used to increase the elastic potential energy of the elastic member 120 , thereby ensuring the lock core of the endoscope is in the unlocked state and the self-locked state.

[0053] Embodiment 2:

[0054] The present application embodiment provides a self-locking device for an endoscope, such as Figures 4 to 11As shown, it includes a driving gear 210, a driven gear 220, a paddle 230 and the control element 100 in Example 1, the driven gear 220 is located between the driving gear 210 and the paddle 230, the driving gear 210 and the driven gear 220 are coaxially arranged, the paddle 230 is slidably connected with the driven gear 220, and the sliding stroke between the paddle 230 and the driven gear 220 includes a first position state and a second position state. In the first position state, the driving gear 210 is separated from the driven gear 220, and in the second position state, the driving gear 210 is meshed with the driven gear 220. The control element 100 is arranged on the side wall of the driven gear 220 close to the paddle 230, and the paddle 230 is provided with a limiter 231, and the limiter 231 is used to cooperate with the elastic member 120 to achieve locking of the first position state and / or the second position state.

[0055] When the active bending section of the endoscope is bent, it is necessary to control the traction rope to achieve control of the active bending section. After the active bending section is bent in place, in order to avoid changing the state of the active bending section by mistake, it is necessary to control the state of the traction rope through the self-locking device. In this embodiment, in the first position state, the active gear 210 is separated from the driven gear 220, and the medical staff cannot control the traction rope through the lever 240. At this time, the self-locking device is in a self-locking state, and in the second position state, the active gear 210 is meshed with the driven gear 220. The medical staff can drive the active gear 210 to rotate through the lever 240, and the rotation is transmitted to the traction rope to achieve control of the traction rope. At this time, the self-locking device is in an unlocked state; when switching between the self-locking state and the unlocking state, under normal conditions, the elastic member 120 applies a thrust toward the paddle 230 to the limit member 231, so that the active gear 210 and the driven gear 220 remain separated. That is, the self-locking device is in the first position state under normal conditions. When it is necessary to switch to the unlocking state, such as Figure 6As shown, the paddle 230 is pushed to make the paddle 230 and the driven gear 220 slide, so that the paddle 230 overcomes the elastic resistance of the control element 100 and forces the driven gear 220 to move axially toward the driving gear 210, and the limiter 231 moves along the elastic member 120 to pass over the first protrusion 121, and the driven gear 220 is meshed with the driving gear 210. At this time, the switching control from the self-locking state to the unlocking state is completed; in addition, by reversely pushing the paddle 230, the paddle 230 and the driven gear are meshed. Slippage occurs between the wheels 220, forcing the driven gear 220 to move axially away from the driving gear 210. When the limit member 231 moves along the elastic member 120 to pass over the first protrusion 121, the driven gear 220 is separated from the driving gear 210. At this time, the switching control from the unlocked state to the self-locking state is completed. During the state switching control process, the self-locking device gives the control element 100 sufficient deformation space, effectively reducing the resistance of the control element 100 during the state switching control process, and improving the convenience of equipment use.

[0056] Specifically, the first protrusion 121 is used to cooperate with the limiting member 231 to achieve locking of the first position state, and the limiting member 231 is used to cooperate with the elastic member 120 to achieve locking of the second position state. Since during the state switching control process, the elastic member 120 on the control element 100 always applies a thrust to the paddle 230 away from the driving gear 210, and the axial relative position of the paddle 230 and the housing 40 is fixed, and the axial relative position of the driven gear 220 and the housing 40 can be changed, therefore, when switching control from the unlocked state to the self-locking state, after the limiting member 231 moves along the elastic member 120 to pass over the first protrusion 121, the first protrusion 121 imposes a limiting constraint on the limiting member 231, and cooperates with the thrust applied by the elastic member 120, and the sliding connection relationship between the paddle 230 and the driven gear 220, to achieve locking of the first position state, and the paddle 230 and the driven gear 220 are connected. The relative position relationship between the gears 220 and the relative position between the driven gear 220 and the driving gear 210 remain locked; and when switching from the self-locking state to the unlocking state, the paddle 230 is pushed to slide, and the limit member 231 is synchronously displaced along the elastic member 120. After the limit member 231 moves over the first protrusion 121, the first protrusion 121 no longer constrains the limit member 231. Under the continuous thrust of the elastic member 120, the self-locking device can be kept in the unlocking state at all times. In addition, the sudden change in resistance during the switching control process brought about by the first protrusion 121 can be positively fed back to the medical staff, generating an obvious signal indicating whether the control is in place, thereby improving the convenience of using the equipment.

[0057] Specifically, Figure 6 , Figure 8 and Fig. 9As shown, the driven gear 220 is provided with a protrusion 221, the protrusion 221 is provided with a slide groove 222, the slide groove 222 is provided with a slider 224 matching the slide groove 222, and the slider 224 is connected to the paddle 230; the driving gear 210 and the driven gear 220 are coaxially arranged on the rotating shaft 250, the driven gear 220 and the rotating shaft 250 are axially slidably connected, the driving gear 210 and the rotating shaft 250 are coaxially rotatably connected, and the angle between the slide groove 222 and the central axis of the rotating shaft 250 is an acute angle. When the self-locking device is installed in the endoscope, as shown in FIG. Fig.11 As shown, the axial relative position of the paddle 230 and the housing 40 is fixed, and the axial relative position of the driven gear 220 and the housing 40 can be changed. Therefore, when the driving paddle 230 overcomes the resistance of the control element 100 and rotates, the rotational potential energy of the paddle 230 is transmitted to the driven gear 220, forcing the driven gear 220 to move axially along the rotating shaft, so that the driven gear 220 approaches or moves away from the driving gear 210 axially, thereby achieving the switching control of the self-locking device between the self-locking state and the unlocking state by driving the paddle 230; and setting the angle between the slide groove 222 and the central axis of the rotating shaft 250 to an acute angle can well help the paddle 230 to transmit the rotational potential energy to the kinetic energy of the driven gear 220 to move axially.

[0058] Specifically, Figure 8 As shown, the protrusion 221 is arranged on the side wall of the driven gear 220 close to the paddle 230, and the protrusion 221 is arranged through the avoidance area 130. By allowing the protrusion 221 to pass through the avoidance area 130, the control element 100 can be limited and fixed by the protrusion 221, and at the same time, the space between the paddle 230 and the driven gear 220 is fully utilized to achieve stable installation of the self-locking device in a limited space.

[0059] Specifically, a mounting column 223 that cooperates with the mounting hole 140 is provided on the side wall of the driven gear 220 near the paddle 230. When the self-locking device is installed in the endoscope, the mounting hole 140 and the mounting column 223 can be used to cooperate to quickly position, install and connect the control element 100 and the driven gear 220, thereby improving the convenience of equipment processing and manufacturing.

[0060] Embodiment 3:

[0061] The present application embodiment provides a handle of an endoscope, such as Fig.11 and Fig.12As shown, it includes a housing 40, a lever and the self-locking device in Example 2, wherein the driving gear 210 and the driven gear 220 are arranged in the housing 40, the lever 240 is connected to the paddle 230, and the lever 240 is at least partially arranged outside the housing 40. In this embodiment, it is preferred to set the lever 240 and the paddle 230 in an L-shaped structure, and the connecting end of the lever 240 and the paddle 230 is hinged to the inner wall of the housing, so that when the lever 240 is driven to rotate, the paddle 230 can follow and rotate synchronously, so as to facilitate the state switching control of the self-locking device.

[0062] Embodiment 4:

[0063] The present application embodiment provides an endoscope, such as Fig.12 As shown, it includes the self-locking device in Example 2, or the handle in Example 3. When in use, when the driving gear 210 is in meshing state with the driven gear 220, when the driving paddle 230 rotates, the driven gear 220 connected to the paddle 230 rotates synchronously, and the driving gear 210 is affected by the meshing relationship and follows the driven gear 220 synchronization device. When the driving gear 210 rotates, it drives the rotating shaft 250 to rotate synchronously, and the traction rope control dial on the rotating shaft 250 moves with it, and the traction rope is pulled to realize the bending control of the active bending section.

[0064] It should be noted that the endoscope in the embodiments of the present application may 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 embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control element for an endoscope, characterized in that: It includes a mounting base and an elastic member, wherein the mounting base is provided with an avoidance zone, wherein the avoidance zone is a hole or a groove penetrating the mounting base, the elastic member is arranged corresponding to the avoidance zone, one end of the elastic member is connected to the mounting base, and the other end of the elastic member is a free end, the projection of the elastic member on the plane where the mounting base is located covers part of the avoidance zone, and a first protrusion is provided on the elastic member; the elastic member includes a first section, a second section and a third section, wherein the second section serves as a free end, one end of the second section is connected to the mounting base through the first section, and the other end of the second section is connected to the mounting base through the third section, and the elastic member is a U-shaped structure.

2. The control element according to claim 1, characterized in that The mounting base is provided with a mounting hole, and / or the elastic member is integrated with the mounting base.

3. The control element according to claim 1, characterized in that The first protrusion includes a first inclined surface and a second inclined surface, the slope of the second inclined surface is greater than the slope of the first inclined surface, and the second inclined surface is located between the first inclined surface and the first section.

4. The control element according to claim 3, characterized in that The second section further includes a first straight portion connected to the first inclined surface, and a second straight portion connected to the second inclined surface, wherein the first straight portion is connected to the first section.

5. The control element according to claim 1, characterized in that The first section is provided with a second protrusion, and / or the third section is provided with a third protrusion.

6. A self-locking device for an endoscope, characterized in that: It comprises a driving gear, a driven gear, a paddle and a control element as claimed in any one of claims 1 to 5, wherein the driven gear is located between the driving gear and the paddle, the driving gear and the driven gear are coaxially arranged, the paddle is slidably connected with the driven gear, the sliding stroke between the paddle and the driven gear comprises a first position state and a second position state, in the first position state, the driving gear is separated from the driven gear, in the second position state, the driving gear is meshed with the driven gear, the control element is arranged on the side wall of the driven gear close to the paddle, a limiter is arranged on the paddle, and the limiter is used to cooperate with the elastic member to realize locking of the first position state and / or the second position state.

7. A handle for an endoscope, characterized in that: It comprises a housing, a lever and the self-locking device according to claim 6, wherein the driving gear and the driven gear are arranged in the housing, the lever is connected to the paddle, and the lever is at least partially arranged outside the housing.

8. An endoscope, characterized in that: It comprises the self-locking device as claimed in claim 6 or the handle as claimed in claim 7.

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