A driving assembly, a handle and an endoscope

Abstract

The present invention provides a driving assembly, a handle and an endoscope, and relates to the technical field of medical devices. The present invention comprises a traction wheel, which is rotatably arranged on the handle; a lever, which is slidably connected to the traction wheel, and the lever and the traction wheel are matched in the upper limit position in the rotation direction of the traction wheel, and the lever comprises a pressing part, and when an external force acts on the pressing part, the lever can slide relative to the traction wheel, so that the pressing part moves toward the traction wheel; an elastic member, which is connected to the lever, and the elastic member can push the lever to slide relative to the traction wheel after the external force is released, so that the pressing part is reset in the direction away from the traction wheel. Compared with the prior art, the present invention has the advantages of being able to adjust the distance between the pressing part and the handle to adapt to the hand operation of the operator and make up for the hand fatigue problem caused by the limited range of hand movement.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a driving assembly, a handle and an endoscope. Background Art

[0002] The endoscope consists of an operating handle and an insertion part. During use, the operator drives the internal traction wheel to rotate by turning the lever on the handle, thereby adjusting the angle of the active bending section of the insertion part, thereby achieving precise adjustment of the direction of the front-end module, supporting detailed observation, precise positioning and other operating functions.

[0003] However, the lever in the prior art has the disadvantage of being inconvenient to operate when in use. In particular, when the operator needs to adjust the lever to the distal or proximal extreme position, the hand is often fatigued due to the limited range of hand movement, which significantly reduces the comfort and convenience of operation during the use of the endoscope. Summary of the invention

[0004] In order to solve the above problems, the present application provides a drive assembly, a handle and an endoscope.

[0005] In a first aspect, the present application provides a drive assembly, which adopts the following technical solution:

[0006] A drive assembly is applied to an endoscope, wherein the endoscope comprises a handle, and the drive assembly comprises:

[0007] A traction wheel rotatably disposed on the handle;

[0008] A lever is slidably connected to the traction wheel, the lever and the traction wheel are matched in a limit position in the rotation direction of the traction wheel, the lever includes a pressing portion, and when an external force acts on the pressing portion, the lever can slide relative to the traction wheel, so that the pressing portion moves toward the direction close to the traction wheel;

[0009] An elastic member is connected to the shifting rod, and the elastic member can push the shifting rod to slide relative to the traction wheel after the external force is released, so that the pressing part is reset in a direction away from the traction wheel.

[0010] Preferably, the lever slides in a first direction relative to the traction wheel, and a displacement adjustment structure is provided between the lever and the traction wheel and / or the handle, and the displacement adjustment structure is used to adjust the sliding range of the lever relative to the traction wheel in the first direction.

[0011] Preferably, the displacement adjustment structure comprises a limiting member, one of the traction wheel and the shifting rod is provided with the limiting member, and the other is provided with a limiting groove, and in the first direction, the limiting member is slidably matched with the limiting groove;

[0012] In the first direction, a movable spacing is formed between the limiting member and the limiting groove to limit the sliding range of the limiting member in the first direction.

[0013] Preferably, the limit member is movably arranged on the traction wheel and / or the shifting rod. When the limit member moves, the movable spacing can be increased or decreased. The displacement adjustment structure also includes a driving member for driving the limit member to move relative to the traction wheel and / or the shifting rod.

[0014] Preferably, the traction wheel is rotatably arranged on the handle with the first axis as the rotation center, and the limiter is slidably arranged on the traction wheel and / or the shifting rod along the direction of the first axis, wherein:

[0015] At least one of the limiting groove and the limiting member has a guiding slope, so that when the limiting member moves along the first axis direction, the movable distance is gradually increased or decreased;

[0016] And / or, the limiting member is provided with at least two bosses, adjacent bosses are arranged along the first axis direction, and the lengths of adjacent bosses in the first direction increase sequentially;

[0017] And / or, the inner wall of the limiting groove is provided with at least two recessed parts, adjacent recessed parts are arranged along the first axial direction, and the lengths of adjacent recessed parts in the first direction increase successively.

[0018] Preferably, the limiting member is slidably disposed on the traction wheel along the first axis direction, and the limiting member cooperates with the traction wheel to limit the rotation direction of the traction wheel;

[0019] The limiting member cooperates with the shifting rod to limit the rotation direction of the traction wheel; and the driving member is used to drive the limiting member to move relative to the traction wheel in the direction of the first axis.

[0020] Preferably, the lever comprises a first fixing portion, the first fixing portion is movably connected to the handle, and the first fixing portion can move relative to the handle in the first direction;

[0021] And / or, the shifting rod includes a second fixing portion, and the displacement adjustment structure is arranged between the second fixing portion and the traction wheel and / or the handle.

[0022] Preferably, the handle is rotatably provided with a slider, the first fixing portion is slidably connected to the slider, and the rotation axis of the slider coincides with the rotation axis of the traction wheel;

[0023] The elastic member is disposed between the sliding block and the first fixing portion, and is used for driving the lever to return to its original position.

[0024] In a second aspect, the present application provides a handle, which adopts the following technical solution:

[0025] A handle comprises a driving assembly as described in the above technical solution.

[0026] In a third aspect, the present application provides a handle, which adopts the following technical solution:

[0027] An endoscope comprises an insertion portion and a handle according to the above technical solution, wherein the insertion portion is connected to the handle.

[0028] The present invention has the following advantages and beneficial effects:

[0029] This solution enables the lever to move relative to the traction wheel, so that the distance between the pressing part and the handle can be adjusted to adapt to the operator's hand operation and compensate for the hand fatigue problem caused by the limited range of hand movement. Through the elastic member, the lever can keep pace with the hand movement, so that the distance between the pressing part and the handle can adapt to the hand needs. On the one hand, it can adapt to different sizes of hands, and on the other hand, when the hand pushes the lever to rotate, the distance between the pressing position and the handle is adjusted with the hand movement, thereby improving the operating comfort and reducing hand fatigue, and improving the comfort and convenience of endoscope operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 is a first structural schematic diagram of an embodiment of the present application;

[0032] Figure 2 is a second structural schematic diagram of an embodiment of the present application;

[0033] Figure 3 is a first cross-sectional view of an embodiment of the present application;

[0034] Figure 4 is a second cross-sectional view of an embodiment of the present application;

[0035] Figure 5 It is a schematic diagram of the structure of the limit slot and the limit block, mainly showing the movable spacing;

[0036] Figure 6is a first structural schematic diagram of a limiting member;

[0037] Figure 7 is a second structural schematic diagram of the limiting member;

[0038] Figure 8 It is a schematic diagram of the first partial structure of an embodiment of the present application;

[0039] Fig. 9 is a schematic diagram of a second partial structure of an embodiment of the present application;

[0040] Fig.10 is a schematic diagram of the state when the limiting member moves relative to the limiting groove along the first axis direction;

[0041] Fig.11 It is a schematic diagram of the state when the lever is rotated relative to the handle;

[0042] Fig.12 is a first structural schematic diagram of an endoscope;

[0043] Fig.13 2 is a second structural schematic diagram of an endoscope.

[0044] The markings in the figure are:

[0045] 10. endoscope; 11. handle; 11a. slider; 12. insertion part; 100. traction wheel; 200. lever; 210. pressing part; 220. limiting groove; 221. guiding slope; 222. recessed part; 230. movable spacing; 240. first fixing part; 250. second fixing part; 300. elastic member; 400. displacement adjustment structure; 410. limiting member; 411. boss; 420. driving member; X, first direction; Y, first axis direction. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope 10 and its components 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".

[0049] In modern medicine, endoscopes are widely used as important tools for various diagnoses and treatments, especially in minimally invasive surgeries. Their core function is to observe and manipulate internal organs and tissues through precise control. The design of the endoscope allows the operator to control the rotation of the traction wheel through the lever, thereby adjusting the position of the traction rope and ultimately achieving bending control of the insertion part.

[0050] However, in actual use, the applicant has repeatedly observed that operators often feel uncomfortable when turning the lever, which not only affects the user experience, but may also affect the accuracy and efficiency of the operation to a certain extent.

[0051] After analysis, the applicant found that this discomfort mainly comes from the movement of the lever. In the existing design, the lever is connected to the traction wheel, which can effectively drive the traction wheel to rotate and control the position of the traction rope. However, during operation, when the operator presses and pushes the lever with his thumb, the lever not only moves in a straight line, but also moves in an arc around the rotation center of the traction wheel. This arc movement is inconsistent with the linear movement of the finger, resulting in an obvious squeezing tactile sensation when the operator presses.

[0052] Further research shows that the root of this discomfort lies in the structural configuration of the lever and the traction wheel. The lever design requires it to move around the rotation center of the traction wheel during the force application process, resulting in a large squeezing force at the contact point between the lever and the finger, causing physiological discomfort and possibly finger fatigue, thus affecting the ability to operate for a long time. In addition, the arc movement of the lever increases the load on the finger joints, causing the fingers to bear the reaction force of the lever, resulting in pain or fatigue, especially when using the endoscope for a long time. In order to relieve discomfort, the operator often needs to frequently adjust the grip posture, affecting the stability and fluency of the operation.

[0053] In summary, although the endoscope lever design has the technical advantage of controlling the traction rope, the existing design exposes significant discomfort in actual use, mainly due to the interaction between the lever movement and the fingers. In order to improve the operator's experience, it is necessary to optimize the lever structure to improve the comfort of endoscope operation.

[0054] The following is combined with Figures 1 to 13 , a driving assembly, a handle and an endoscope provided in an embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0055] A first aspect of this embodiment provides a detailed description of a drive component.

[0056] Reference Figure 1 , Fig.12 , an embodiment of the present application provides a driving assembly, which is applied to an endoscope 10. Exemplarily, the endoscope 10 includes a handle 11 and an insertion portion 12, wherein the distal end of the insertion portion 12 is provided with an active bending portion that can be actively bent, and the operator controls the bending of the active bending portion by operating the driving assembly, thereby adjusting the orientation of the distal end of the insertion portion 12, so as to facilitate observation of the lesion location in the patient's body. The connection between the insertion portion 12 and the handle 11 can be detachable or non-detachable, and the specific method can be selected according to needs.

[0057] Reference Fig.12 , Fig.13 , the drive assembly is mounted on the handle 11, and can drive the active bending portion to achieve bending through the control of the operator. For example, in some embodiments, the drive assembly can form an integrated structure with the handle 11, that is, the drive assembly is integrated into the design of the handle 11, making the structure more compact. In addition, in other embodiments, the drive assembly can be detachably connected to the handle 11, for example, the drive assembly can be fixed to the handle 11 by bolts or a clamping structure. This detachable design facilitates maintenance, repair or replacement of the drive assembly, which is beneficial to the operational flexibility and maintenance convenience of the device.

[0058] Reference Figure 1 , Figure 2 The drive assembly includes a traction wheel 100, a lever 200 and an elastic member 300. The traction wheel 100 is rotatably mounted on the handle 11 with the first axis as the rotation center. The lever 200 is connected to the traction wheel 100 and can drive the traction wheel 100 to rotate. A traction rope is provided inside the endoscope 10, and the traction rope is wound around the traction wheel 100 and connected to the active bending part. When the lever 200 drives the traction wheel 100 to rotate, the traction rope is wound or released, thereby driving the bending of the active bending part, so that the distal end of the endoscope 10 is adjusted in direction to achieve more precise observation and operation.

[0059] The traction wheel 100 includes a rotating shaft and a rotating wheel, the rotating wheel is fixedly connected to the rotating shaft, and the rotating shaft extends along the first axis direction (refer to Figure 3 The rotating shaft 100 is rotatable in the Y direction and can rotate relative to the handle 11. To achieve this rotation, a bearing and / or a sleeve are provided between the rotating shaft and the handle 11 so that the rotating shaft can rotate smoothly around the first axis as the rotation center. The use of the bearing and the sleeve can effectively reduce the rotation friction, thereby improving the sensitivity and stability of the rotation of the traction wheel 100. This design ensures the smooth operation of the traction wheel 100, facilitates the operator to achieve precise control of the traction rope through the lever 200, and thus improves the accuracy and reliability of the operation of the endoscope 10.

[0060] Reference Figure 2 , Figure 3 In some embodiments, the lever 200 includes a pressing portion 210, and the lever 200 is slidably connected to the traction wheel 100. The lever 200 and the traction wheel 100 form a limited fit in the rotation direction of the traction wheel 100. When the lever 200 is pushed, the operator's hand acts on the pressing portion 210, so that the pressing portion 210 is subjected to force, thereby pushing the lever 200 to slide relative to the traction wheel 100, so that the pressing portion 210 gradually moves toward the direction close to the traction wheel 100. This sliding changes the distance between the pressing portion 210 and the handle 11, so that the device can adapt to the operation requirements of different hand shapes and improve the comfort of operation.

[0061] In addition, when the hand pushes the pressing portion 210, the lever 200 rotates relative to the handle 11 through the force of the pressing portion 210, thereby driving the traction wheel 100 to rotate relative to the handle 11. In other words, the lever 200 can not only drive the traction wheel 100 to rotate, but also slide relative to the traction wheel 100, thereby adjusting the position between the pressing portion 210 and the handle 11. Through this design, the lever 200 can control the rotation of the traction wheel 100 to achieve bending action during operation, and can also slide adaptively according to the position of the operator's hand, thereby achieving more humanized adjustment and improving the operational flexibility and comfort of the endoscope 10.

[0062] In some embodiments, reference Figure 2 , Figure 3, the elastic member 300 is connected to the lever 200. Exemplarily, the elastic member 300 is located between the lever 200 and the handle 11 and / or the traction wheel 100. When the external force is removed from the pressing portion 210, the elastic member 300 can push the pressing portion 210 to reset in a direction away from the traction wheel 100. Specifically, when the external force is applied to the pressing portion 210, the lever 200 is compressed or stretched under the action of the elastic member 300, so that the lever 200 slides relative to the traction wheel 100. In this process, the elastic member 300 stores energy; when the external force is removed, the elastic member 300 releases energy, pushing the lever 200 to slide relative to the traction wheel 100 and return to the initial position. This design allows the relative position relationship between the lever 200 and the traction wheel 100 to be automatically reset after the operation, which facilitates the smooth operation of the next operation, and to a certain extent improves the convenience and stability of the operation of the drive assembly of the endoscope 10.

[0063] In addition, the setting of the elastic member 300 enables the pressing portion 210 to flexibly follow the hand movement, so that the pressing portion 210 always fits the hand when the hand pushes the lever 200, so as to more efficiently transmit the applied force. This design further optimizes the operating feel, reduces hand fatigue, and improves the accuracy and comfort of control.

[0064] According to an alternative embodiment, referring to Figure 2 , Figure 3 , the lever 200 slides in a first direction relative to the traction wheel 100, and the dotted arrow X in the figure indicates the direction of the first direction. The first direction is the direction in which the pressing portion 210 approaches or moves away from the handle 11. A displacement adjustment structure 400 is provided between the lever 200 and the traction wheel 100 and / or the handle 11, and the displacement adjustment structure 400 is used to adjust the sliding range of the lever 200 relative to the traction wheel 100 in the first direction. Exemplarily, the sliding range of the lever 200 relative to the traction wheel 100 can be controlled by the displacement adjustment structure 400, so that the maximum distance of the pressing portion 210 close to the handle 11 can be changed.

[0065] This design helps to adapt to the operation requirements of different hand shapes. The displacement adjustment structure 400 can not only adapt to different hand shapes and limit the range of motion of the lever 200, but also control the range of motion of the lever 200 when the lever 200 drives the traction wheel 100 to rotate, so as to improve the accuracy of the operation. Specifically, for operators with larger hands, the range of motion of the lever 200 relative to the traction wheel 100 can be reduced by adjusting the displacement structure, so that when the traction wheel 100 is pushed to rotate to the extreme position, the range of motion between the lever 200 and the handle 11 will be smaller, or even no range of motion, so that the operator can fix the lever 200 at the extreme position.

[0066] In addition, when the lever 200 pushes the traction wheel 100 to rotate to the limit position, if the lever 200 still has a large sliding distance relative to the traction wheel 100, it may be difficult for the operator to stably fix the lever 200 at the limit position. Therefore, reasonably controlling the sliding range of the lever 200 helps to accurately fix the lever 200 at the limit position, avoid excessive sliding, and improve the accuracy and stability of the operation.

[0067] Specifically, the displacement adjustment mechanism can adjust the range of motion of the lever 200 relative to the traction wheel 100 according to the size of the hands of different operators, thereby improving the adaptability of the equipment. This design ensures that the range of motion of the lever 200 can be accurately adjusted according to the size of the hands, meeting the needs of different operators for comfort and operating accuracy. While meeting the operational flexibility, the displacement adjustment mechanism can also optimize the pushing accuracy of the lever 200, making the operation process more ergonomic, and improving the user experience and control accuracy.

[0068] According to an alternative embodiment, referring to Figure 3 , Figure 4 The displacement adjustment structure 400 includes a limiter 410. One of the traction wheel 100 and the lever 200 is provided with the limiter 410, and the other is provided with a limiter slot 220. In the first direction, the limiter 410 and the limiter slot 220 are slidably matched. In the first direction, a movable spacing 230 is formed between the limiter 410 and the limiter slot 220 to limit the sliding range of the limiter 410 in the first direction. Figure 5 As shown, the movable spacing 230 is the distance between the inner wall of the upper limit groove 220 and the limiting member 410 in the first direction. When the limiting member 410 is located at the position shown in the figure, that is, when the limiting member 410 is located at one end of the limiting groove 220, the movable spacing 230 is the distance between the other end of the limiting groove 220 and the limiting member 410. When the limiting member 410 is located in the middle position of the limiting groove 220, the movable spacing 230 is the sum of the distances between the two ends of the limiting groove 220 and the limiting member 410 (this situation is not shown in the figure).

[0069] Specifically, the length of the limit slot 220 is greater than the length of the limit member 410 in the limit slot 220, which means that the limit member 410 can slide a certain distance in the first direction in the limit slot 220. This movable spacing 230 defines the maximum sliding distance of the limit member 410 in the limit slot 220, thereby limiting the range of motion of the lever 200 relative to the traction wheel 100. Through this design, the limit structure can accurately control the sliding distance of the lever 200 to meet the operation requirements of different hand sizes, making the operation more ergonomic, and further improving the comfort and control accuracy of the device.

[0070] It is understandable that by adjusting the length of the limit slot 220 in the first direction, or adjusting the length of the limit member 410 in the limit slot 220, the size of the active spacing 230 can be changed, thereby adjusting the range of motion of the lever 200. In some embodiments, a blocking member can be provided in the limit slot 220, and the blocking member is fixed in the limit slot 220. By changing the distance between the blocking member and the inner wall of the limit slot 220, the active spacing 230 can be increased or decreased, thereby further accurately adjusting the sliding range of the limit member 410 in the limit slot 220. This design allows the operator to flexibly set the size of the active spacing 230 to adapt to different hand sizes and operating requirements, thereby meeting diverse operating requirements while improving the adjustment accuracy and comfort of the device.

[0071] According to an alternative embodiment, referring to Figure 3 , Figure 4 The limiting member 410 is movably disposed on the traction wheel 100 and / or the lever 200. When the limiting member 410 is movable, the movable spacing 230 can be increased or decreased. The displacement adjustment structure 400 also includes a driving member 420 for driving the limiting member 410 to move relative to the traction wheel 100 and / or the lever 200. By making the limiting member 410 move relative to the traction wheel 100, its effective length in the limiting groove 220 can be adjusted, thereby achieving the adjustment of the movable spacing 230, and further flexibly controlling the movable range of the lever 200 relative to the traction wheel 100.

[0072] In some embodiments, the stopper 410 can be rotatably connected to the traction wheel 100 and / or the lever 200, and has different sizes in the circumferential direction of the stopper 410. When the stopper 410 rotates, its length in the stopper groove 220 in the first direction changes, so that the size of the active spacing 230 can be adjusted accordingly. This design can adjust the active spacing 230 by simply rotating the stopper 410, making the adjustment of the stopper structure more convenient, adapting to various operation requirements, and improving the flexibility and accuracy of the operation of the lever 200.

[0073] According to an alternative embodiment, referring to Figure 3 , Figure 6 The traction wheel 100 is rotatably disposed on the handle 11 with the first axis as the rotation center, and the limiter 410 is slidably disposed on the traction wheel 100 and / or the lever 200 along the first axis. To adjust the movable spacing 230, at least one of the limiter slot 220 and the limiter 410 has a guiding inclined surface 221. Figure 3 and Figure 6 The dotted arrow Y indicates the first axis direction. When the limiting member 410 moves along the first axis direction, it is affected by the guiding slope 221 and changes the effective length of the limiting member 410 in the limiting groove 220, thereby gradually increasing or decreasing the movable spacing 230.

[0074] Specifically, the stopper 410 is slidably arranged in the direction of the first axis. During the sliding process, the stopper 410 has a guiding inclined surface 221, so the effective length of the stopper 410 in the limiting groove 220 will change. In other words, since the stopper 410 has a guiding inclined surface 221, its length in the first direction will gradually change as it slides along the first axis. When the stopper 410 slides along the first axis, the stopper 410 regions of different lengths will be located in the limiting groove 220, thereby realizing the continuous adjustment of the active spacing 230 (refer to Fig.10 , Fig.11 ). This gradual adjustment design helps to optimize the range of motion control of the lever 200, avoids the abrupt feeling of operation caused by a sudden increase or decrease in the range of motion, and improves the smoothness and accuracy of the adjustment of the lever 200.

[0075] This structure allows the range of motion of the lever 200 to be flexibly adjusted to accommodate different hand sizes and operating habits. For example, the operator can increase or decrease the active spacing 230 by adjusting the position of the limiter 410 in the limiter slot 220, so that the range of motion of the lever 200 can meet different hand requirements and improve operating comfort. This design not only enhances the stability of the lever 200 in a specific direction, but also helps to improve the accuracy of the operation, bringing a smoother operating experience. At the same time, the guiding slope 221 makes the sliding adjustment of the limiter 410 smoother, thereby improving the convenience and stability of the endoscope 10 drive assembly to a certain extent.

[0076] According to an alternative embodiment, referring to Figure 4 , Figure 7 The limiting member 410 is provided with at least two bosses 411, and the adjacent bosses 411 are arranged along the first axis direction, and the lengths of the adjacent bosses 411 in the first direction are increased successively. The lengths of the adjacent bosses 411 in the first direction are gradually increased, so that when the limiting member 410 slides along the first axis, the bosses 411 of different lengths enter the limiting groove 220 successively. Such a design can realize the gradual adjustment of the active spacing 230, meet the requirements for the smooth transition of the active range during operation, and further improve the control accuracy and operating comfort of the lever 200.

[0077] In some embodiments, a guiding slope 221 is provided in the limiting groove 220, and the boss 411 on the limiting member 410 cooperates with the guiding slope 221, so that the limiting member 410 can achieve segmented adjustment of the active spacing 230 when sliding along the first axis direction. Each boss 411 can adjust the length of the limiting member 410 in the first direction at different positions in contact with the guiding slope 221, thereby achieving continuous fine adjustment of the active spacing 230 in each segment.

[0078] This design combines the dual functions of segmented coarse adjustment and continuous fine adjustment: when the stopper 410 slides along the first axis, the active spacing 230 is gradually changed by the bosses 411 of different lengths to achieve preliminary coarse adjustment; and in each segment, the stopper 410 is finely adjusted by the guiding inclined surface 221 to achieve smooth continuous fine adjustment. This combined adjustment method makes the control of the active spacing 230 more flexible and accurate, adapts to different operating requirements, and improves the adjustment convenience and operational stability of the lever 200.

[0079] According to an alternative embodiment, referring to Figure 4 The inner wall of the limiting groove 220 is provided with at least two recessed parts 222, and the adjacent recessed parts 222 are arranged along the first axis direction, and the lengths of the adjacent recessed parts 222 in the first direction are increased successively. With this design, when the limiting member 410 slides along the first axis direction, the recessed parts 222 of different lengths contact the limiting member 410 successively, thereby gradually adjusting the movable spacing 230.

[0080] This structural design realizes the segmented adjustment of the limiter 410 and the recessed portion 222: when the limiter 410 slides to different recessed portions 222, the effective length in the first direction will be changed, providing multi-level control of the active spacing 230. This design not only satisfies the segmented adjustment, but also improves the smoothness of the adjustment, making it easier for the operator to flexibly adjust the range of motion according to specific needs, thereby improving the comfort and accuracy of the operation.

[0081] According to an alternative embodiment, referring to Figure 8 , Fig. 9 The limiter 410 is slidably disposed on the traction wheel 100 along the first axis direction, and the limiter 410 cooperates with the traction wheel 100 in the upper limit position in the rotation direction of the traction wheel 100. The limiter 410 cooperates with the lever 200 in the upper limit position in the rotation direction of the traction wheel 100; the driving member 420 is used to drive the limiter 410 to move relative to the traction wheel 100 in the first axis direction.

[0082] For example, in a direction perpendicular to the first direction, the limiting member 410 is in contact with the inner wall of the limiting groove 220. This means that when the lever 200 is driven to rotate, the lever 200 can drive the limiting member 410 to rotate synchronously, and the limiting member 410 further drives the traction wheel 100 to rotate, thereby realizing the function of the lever 200 driving the traction wheel 100 to rotate. This design enables the lever 200 to not only slide and adjust relative to the traction wheel 100, but also directly drive the rotation of the traction wheel 100, forming a flexible operating mechanism.

[0083] The advantage of this design is that the lever 200 has dual functions: on the one hand, it can slide on the traction wheel 100 to adjust the movable spacing 230 between the lever 200 and the traction wheel 100; on the other hand, it can directly drive the traction wheel 100 to rotate by the way that the limiter 410 fits the limiter groove 220, making the operation more convenient and efficient. This structure provides an efficient power transmission method, thereby optimizing the flexibility and comfort of the endoscope 10 operation.

[0084] This design achieves stable control of the traction wheel 100 and the lever 200 in the direction of rotation through the limiting cooperation between the limiting member 410 and the traction wheel 100 and the lever 200. The introduction of the driving member 420 allows the limiting member 410 to slide and adjust in the direction of the first axis, thereby achieving the adjustment of the movable range of the lever 200 relative to the traction wheel 100. This structure helps to accurately control the movable spacing 230 of the lever 200 during the rotation of the traction wheel 100, so as to adapt to different operating requirements and improve the stability and convenience of operation. This flexible movable spacing 230 adjustment mechanism improves the smoothness and accuracy of the operation of the endoscope 10 to a certain extent.

[0085] According to an alternative embodiment, referring to Figure 1 , Figure 2 The lever 200 includes a first fixing portion 240, which is movably connected to the handle 11, and the first fixing portion 240 can move in a first direction relative to the handle 11. When the first fixing portion 240 is connected to the handle 11, the handle 11 can partially share the force transmitted by the lever 200, thereby reducing the concentrated transmission of force. This force distribution design helps prevent all the force on the lever 200 from directly acting on the traction wheel 100, thereby avoiding the traction wheel 100 from affecting the rotation accuracy due to excessive force, thereby improving the rotation stability of the traction wheel 100 and the driving accuracy to a certain extent.

[0086] According to an optional embodiment, the lever 200 includes a second fixing portion 250, and the displacement adjustment structure 400 is disposed between the second fixing portion 250 and the traction wheel 100 and / or the handle 11. Through the second fixing portion 250, the lever 200 can not only drive the traction wheel 100 to rotate, but also achieve sliding adjustment relative to the traction wheel 100. This design provides greater flexibility during operation and is particularly suitable for operating scenarios that require fine adjustments. This two-way support design ensures the stability of the movement of the lever 200 to a certain extent, and enhances the driving sensitivity and control accuracy of the lever 200.

[0087] By connecting the first fixing portion 240 of the lever 200 to the handle 11, stable support of the lever 200 during rotation is achieved. Since the handle 11 generally has high rigidity, the first fixing portion 240, with the support of the handle 11, not only provides a stable support force, but also effectively reduces the deviation or vibration of the lever 200 during operation, thereby improving the stability of the operation. This stable support is particularly important in actual operation, ensuring the accuracy of the lever 200 during rotation, and helping to achieve precise control when performing delicate endoscope 10 operations.

[0088] At the same time, the force is transmitted to the traction wheel 100 through the second fixing portion 250 on the lever 200, which has the effect of driving the traction wheel 100 to rotate. The second fixing portion 250 is responsible for transmitting the operating force from the lever 200 to the traction wheel 100, so that the traction wheel 100 can rotate accurately according to the rotation movement of the lever 200. This force transmission design simplifies the transmission relationship between the lever 200 and the traction wheel 100 to a certain extent, not only optimizes the effective transmission of force, but also can maintain uniform distribution of force when the traction wheel 100 rotates, thereby improving the sensitivity and accuracy of the rotation of the traction wheel 100.

[0089] This double-fixed-part design, on the one hand, utilizes the rigid support of the handle 11 to achieve the stability of the lever 200, and on the other hand, transmits the operating force directly to the traction wheel 100 through the second fixed part 250, forming an efficient transmission system. Combined with this structure, the drive assembly of the endoscope 10 not only responds quickly during operation, but also improves the accuracy and smoothness of the operation, which is beneficial to improving the overall control performance of the endoscope 10 and meeting more complex surgical requirements.

[0090] According to an alternative embodiment, referring to Figure 2 , Figure 3 The handle 11 is rotatably provided with a slider 11a, the first fixing portion 240 is slidably connected to the slider 11a, and the rotation axis of the slider 11a coincides with the rotation axis of the traction wheel 100. The elastic member 300 is provided between the slider 11a and the first fixing portion 240 to drive the lever 200 to reset. Exemplarily, the elastic member 300 is a spring, one end of which abuts against the slider 11a, and the other end abuts against the first fixing portion 240. This design uses the elastic member 300 to automatically restore the lever 200 to its initial position after operation, which is convenient for the user to operate again and improves the operation experience.

[0091] Specifically, a sliding groove is provided in the first fixing portion 240, and the slider 11a is slidably installed in the sliding groove. The elastic member 300 is located in the sliding groove and abuts between the inner wall of the sliding groove and the slider 11a. A recessed groove may be provided on the inner wall of the sliding groove, and part of the elastic member 300 is located in the recessed groove, while the end of the elastic member 300 away from the recessed groove abuts against the slider 11a. Such an arrangement facilitates the installation and fixation of the elastic member 300, ensuring that it works stably between the slider 11a and the first fixing portion 240. This structure not only simplifies the installation of the assembly, but also improves the resetting effect of the elastic member 300, thereby improving the resetting and operation convenience of the drive assembly of the endoscope 10.

[0092] A second aspect of this embodiment describes a handle in detail.

[0093] Reference Fig. 9 , Fig.12 A handle includes a driving assembly in the above embodiment. In this way, the handle 11 has the beneficial effects of the above driving assembly, which will not be described in detail here.

[0094] A third aspect of this embodiment provides a detailed description of an endoscope.

[0095] Reference Fig.12 , Fig.13 , an endoscope, comprising an insertion portion 12 and a handle 11 in the above embodiment, the insertion portion 12 being connected to the handle 11. In this way, the endoscope 10 has the beneficial effects of the above handle 11, which will not be repeated here. The endoscope 10 referred to in the embodiment of the present application 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 10.

[0096] 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 drive assembly, applied to an endoscope (10), the endoscope (10) comprising a handle (11), characterized in that: The drive assembly comprises: A traction wheel (100) rotatably disposed on the handle (11); a shifting rod (200) slidably connected to the traction wheel (100); the shifting rod (200) and the traction wheel (100) are matched in an upper limit position in the rotation direction of the traction wheel (100); the shifting rod (200) comprises a pressing portion (210); when an external force acts on the pressing portion (210), the shifting rod (200) can slide relative to the traction wheel (100), so that the pressing portion (210) moves in a direction close to the traction wheel (100); An elastic member (300) is connected to the lever (200); the elastic member (300) can push the lever (200) to slide relative to the traction wheel (100) after the external force is released, so that the pressing portion (210) is reset in a direction away from the traction wheel (100), and the pressing portion (210) always fits the hand when the hand pushes the lever (200); the lever (200) slides in a first direction relative to the traction wheel (100); within the range in which the lever (200) slides in the first direction relative to the traction wheel (100), the lever (200) can drive the traction wheel (100) to rotate.

2. A drive assembly according to claim 1, characterized in that: A displacement adjustment structure (400) is provided between the shifting rod (200) and the traction wheel (100) and / or the handle (11), and the displacement adjustment structure (400) is used to adjust the sliding range of the shifting rod (200) relative to the traction wheel (100) in a first direction.

3. A drive assembly according to claim 2, characterized in that: The displacement adjustment structure (400) comprises a limiting member (410), one of the traction wheel (100) and the shifting rod (200) is provided with the limiting member (410), and the other is provided with a limiting groove (220), and in the first direction, the limiting member (410) and the limiting groove (220) are slidably matched; In the first direction, a movable spacing (230) is formed between the limiting member (410) and the limiting groove (220) to limit the sliding range of the limiting member (410) in the first direction.

4. A drive assembly according to claim 3, characterized in that: The limiting member (410) is movably arranged on the traction wheel (100) and / or the shifting rod (200); when the limiting member (410) is moved, the movable spacing (230) can be increased or decreased; and the displacement adjustment structure (400) further comprises a driving member (420) for driving the limiting member (410) to move relative to the traction wheel (100) and / or the shifting rod (200).

5. A drive assembly according to claim 4, characterized in that: The traction wheel (100) is rotatably disposed on the handle (11) with a first axis as the rotation center, and the limiting member (410) is slidably disposed on the traction wheel (100) and / or the shifting rod (200) along the direction of the first axis, wherein: At least one of the limiting groove (220) and the limiting member (410) has a guiding inclined surface (221) so as to gradually increase or decrease the movable spacing (230) when the limiting member (410) moves along the first axis direction; And / or, the limiting member (410) is provided with at least two bosses (411), adjacent bosses (411) are arranged along the first axial direction, and the lengths of adjacent bosses (411) in the first direction increase sequentially; And / or, the inner wall of the limiting groove (220) is provided with at least two recessed portions (222), adjacent recessed portions (222) are arranged along the first axial direction, and the lengths of adjacent recessed portions (222) in the first direction increase sequentially.

6. A drive assembly according to claim 5, characterized in that: The limiting member (410) is slidably disposed on the traction wheel (100) along the first axis direction, and the limiting member (410) cooperates with the traction wheel (100) in limiting position in the rotation direction of the traction wheel (100); The limiting member (410) cooperates with the shifting rod (200) to limit the rotation direction of the traction wheel (100); and the driving member (420) is used to drive the limiting member (410) to move relative to the traction wheel (100) in the direction of the first axis.

7. A drive assembly according to claim 2, characterized in that: The lever (200) comprises a first fixing portion (240), the first fixing portion (240) being movably connected to the handle (11), and the first fixing portion (240) being movable in the first direction relative to the handle (11); And / or, the shifting rod (200) comprises a second fixing portion (250), and the displacement adjustment structure (400) is arranged between the second fixing portion (250) and the traction wheel (100) and / or the handle (11).

8. A drive assembly according to claim 7, characterized in that: The handle (11) is rotatably provided with a slider (11a), the first fixing portion (240) is slidably connected to the slider (11a), and the rotation axis of the slider (11a) coincides with the rotation axis of the traction wheel (100); The elastic member (300) is arranged between the sliding block (11a) and the first fixing portion (240) and is used to drive the lever (200) to reset.

9. A handle, characterized in that: A drive assembly comprising any one of claims 1-8.

10. An endoscope, characterized in that: It comprises an insertion portion (12) and a handle (11) according to claim 9, wherein the insertion portion (12) is connected to the handle (11).

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