Driving assembly, endoscope handle and endoscope

Abstract

The invention provides a driving assembly, an endoscope handle and an endoscope, and relates to the technical field of endoscopes, the driving assembly comprises a driving wheel, and the driving wheel is rotatably arranged on a shell and can rotate around the axis of the driving wheel under the driving of a regulation and control part; the driven wheel is configured to be connected with the near end of the traction rope; the adjusting module is connected between the driving wheel and the driven wheel and used for adjusting the transmission ratio between the driving wheel and the driven wheel, compared with the prior art, the problem that the accuracy and adaptability of bending operation of the front end of an existing endoscope insertion part are insufficient can be effectively solved, and meanwhile the operation convenience and comfort of medical staff are improved.

Description

Technical Field

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

[0002] Endoscopes are commonly used medical devices for diagnosing and treating lesions in patients. Endoscopes usually consist of an operating handle and an insertion part. During operation, the doctor controls the operating handle and pulls the front end of the insertion part via a traction rope to achieve the bending action of the insertion part, thereby changing the direction of the distal end of the insertion part.

[0003] At present, the operating handle of the endoscope is equipped with a traction wheel. The doctor drives the traction wheel to rotate by turning the adjustment control on the handle, and then pulls the traction rope to achieve the bending action of the active bending section of the insertion part. However, in actual operation, due to the complexity of the human body cavity structure and individual differences among doctors (such as different finger lengths and different finger swinging habits), doctors often find it difficult to accurately control the swing or rotation amplitude of the adjustment control, which leads to inaccurate bending control of the front end of the insertion part, affecting the adaptability and accuracy of the operation. Summary of the invention

[0004] In order to solve the problem of insufficient accuracy and adaptability in the bending operation of the front end of an endoscope insertion portion, the present application provides a drive assembly, an endoscope handle and an endoscope.

[0005] In a first aspect, the present application provides a drive assembly, which adopts the following technical solution: A driving assembly, applied to an endoscope, comprising: A driving wheel, which is rotatably arranged on the housing and can rotate around its axis under the drive of the adjustment control unit; a driven wheel configured to be connected to a proximal end of the traction rope; An adjusting module is connected between the driving wheel and the driven wheel and is used to adjust the transmission ratio between the driving wheel and the driven wheel.

[0006] Preferably, the driving wheel is a truncated cone structure, the driven wheel is also a truncated cone structure, and the truncated cone of the driving wheel is oriented in the opposite direction to the truncated cone of the driven wheel; The adjustment module includes a transmission wheel, which is arranged between the driving wheel and the driven wheel and fits with the outer conical surfaces of both, and is used to transmit the power of the driving wheel to the driven wheel. The transmission wheel can move along the tangent direction of the outer conical surfaces of the driving wheel and the driven wheel.

[0007] Preferably, the transmission wheel comprises a contact portion and a mounting portion, wherein: The contact portion is an annular structure, and is used to contact the outer conical surface of the driving wheel and the outer conical surface of the driven wheel, and the contact portion is a sheet body; The mounting portion is provided with a rubber ring, and the diameter of the rubber ring is at least not less than the diameter of the contact portion.

[0008] Preferably, the outer wall of the rubber ring is straight or wavy, wherein the straight outer wall presents a smooth straight contour, and the wavy outer wall presents a continuous wave curve extending along the axial direction; And / or, the rubber ring is provided on at least one side of the contact portion along the axial direction of the transmission wheel.

[0009] Preferably, the adjustment module includes a movable rod, the transmission wheel is rotatably arranged on the movable rod, the movable rod has a limit end, the limit end is configured to limit the sliding of the transmission wheel relative to the movable rod along its axial direction, and the movable rod is movably arranged on the shell.

[0010] Preferably, the adjustment module further comprises an operating rod, the operating rod is rotatably arranged to pass through the shell, the movable rod and the operating rod are threadedly connected to each other, and the shell has a locking portion, which is used to limit the movable rod from rotating in the axial direction.

[0011] Preferably, the housing is provided with a stop portion, and the stop portion is used to abut against the end of the movable rod to limit the transmission wheel from being separated from the outer walls of the driving wheel and the driven wheel during the movement of the transmission wheel in the axial direction; And / or, the outer conical surface of the driving wheel, the outer conical surface of the driven wheel and the outer peripheral surface of the contact portion are all provided with a frosted layer; And / or, the tapered smaller diameter side of the driving wheel faces the inner side of the shell, the tapered larger diameter side of the driven wheel faces the inner side of the shell, and the operating rod is obliquely inserted between the driving wheel and the driven wheel to expand the space between the hand-operated adjustment control and the operating rod.

[0012] Preferably, the absolute value of the taper difference between the driving wheel and the driven wheel is not greater than 5 degrees.

[0013] In a second aspect, the present application provides an endoscope handle, which adopts the following technical solution: An endoscope handle comprises a driving assembly as described in the above technical solution.

[0014] In a third aspect, the present application provides an endoscope, which adopts the following technical solution: An endoscope comprises an endoscope handle as described in the above technical solution.

[0015] The present invention has the following advantages and beneficial effects: (1) The present invention changes the transmission ratio between the driving wheel and the driven wheel through the adjustment module in the driving assembly, thereby flexibly adjusting the operating accuracy of the active bending section of the endoscope according to the length and bending habits of the doctor's fingers to meet different operating requirements. By adjusting the transmission ratio, it can be achieved that when the driving wheel rotates at the same angle, the rotation angle of the driven wheel changes, thereby adjusting the bending angle of the active bending section of the endoscope. For example, after increasing the transmission ratio, when the driving wheel rotates at the same angle, the rotation angle of the driven wheel is smaller, which drives the bending angle of the endoscope to decrease; conversely, after reducing the transmission ratio, when the driving wheel rotates at the same angle, the rotation angle of the driven wheel is larger, which drives the bending angle to increase.

[0016] In addition, adjusting the transmission ratio will also affect the response speed of the active bending section of the endoscope. Doctors can adjust the pushing or rotating length of their fingers when operating the control panel according to their needs, thereby improving the comfort and adaptability of the operation. Especially under long-term operation or high-precision requirements, it can effectively reduce the operating burden of medical staff and improve operating efficiency.

[0017] This design makes endoscopic operation more humane, can better adapt to the operating habits and physiological characteristics of different doctors, and improve flexibility and stability during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a schematic diagram intended to show the overall structure of an endoscope.

[0020] Figure 2 It is a cross-sectional view intended to show that the driving wheel, the driven wheel and the transmission wheel are located inside the housing.

[0021] Figure 3 It is a structural diagram intended to show the driving wheel, the driven wheel and the transmission wheel.

[0022] Figure 4 It is an exploded view designed to show the driving wheel, driven wheel and transmission wheel.

[0023] Figure 5 This is an exploded view designed to show the transmission wheel, movable rod and operating rod.

[0024] Figure 6 This is one of the schematic diagrams for showing the structure of the contact part and the rubber ring.

[0025] Figure 7 This is the second structural diagram for showing the contact part and the rubber ring.

[0026] Figure 8 This is the third structural schematic diagram intended to show the contact part and the rubber ring.

[0027] Fig. 9 It is a partial cross-sectional view intended to illustrate a second mounting structure of the movable rod.

[0028] Fig.10 It is a half-section view intended to illustrate a second mounting structure of the movable rod.

[0029] The markings in the figure are: 1. Driving wheel; 2. Adjustment control; 21. Push rod; 3. Driven wheel; 31. Frosted layer; 32. Traction wheel; 321. Traction rope; 4. Adjustment module; 41. Transmission wheel; 410. Tangent direction; 411. Contact part; 412. Mounting part; 42. Movable rod; 421. Limiting end; 4211. Limiting groove; 4212. Split pin; 43. Operating rod; 431. Knob; 4311. Screw; 5. Rubber ring; 6. Operating handle; 60. Insertion part; 61. Shell; 611. Positioning part; 6111. Sliding groove; 612. Stop part; 62. Inner shell; A. The direction of movement of the transmission wheel. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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".

[0033] In modern medicine, endoscopes play a vital role as an important diagnostic and therapeutic tool, especially in the field of minimally invasive surgery. Its core function is to observe and operate internal organs and tissues through precise control. An endoscope usually consists of a long and thin tubular structure (insertion part 60) and a controllable operating handle 6. The operator controls the angle and position of the endoscope's front end lens through the adjustment control 2 (such as a lever 21 or a dial) on the operating handle 6. Through this control, the doctor can accurately guide the lens to the lesion area for inspection or treatment.

[0034] After a series of clinical studies and actual operation feedback, the applicant found that due to the complexity of the human body cavity and the individual differences of doctors, the existing endoscope control system cannot meet the needs of all operators. Specifically, factors such as the doctor's finger length, finger swing habits, and operation speed will directly affect the precise control of the lever 21, and thus affect the accuracy and flexibility of the bending of the front end of the endoscope.

[0035] For example, when the doctor has long fingers, the lever 21 may be moved at a large angle at once during the process of moving the lever 21, causing the front end of the insertion portion 60 to bend too much, which may cause damage to the human body cavity or discomfort during operation. For doctors with shorter fingers, even if the lever 21 is moved to the maximum position, the bending amplitude may still be small, resulting in the inability to accurately adjust the front end of the insertion portion 60 and difficulty in adapting to the complex spatial structure of the human body cavity. These problems make it impossible for doctors to achieve precise control during operation, resulting in inconsistent bending amplitudes of the insertion portion 60 and reduced operation accuracy.

[0036] In addition, the difference in operating speed also brings considerable challenges. Some doctors are accustomed to fast operation. When they turn the lever 21, one turn may push the lever 21 to the bottom, and the bending amplitude of the front end of the insertion part 60 increases sharply. This rapid response may cause the front end of the endoscope to bend too much in some cases, which may damage the cavity tissue, especially in narrow or sensitive areas. For doctors with slower operating speeds, although their operations are more delicate, they may not be able to respond in time when they need to quickly adjust the bending of the front end of the insertion part 60, affecting the efficiency and adaptability of the operation.

[0037] In view of the above problems, the design of the endoscope must provide higher adaptability on the basis of ensuring the accuracy of operation. To this end, the applicant has proposed an optimization and improvement plan for the drive system.

[0038] Combine the following Figures 1 to 10 A drive assembly, an endoscope handle and an endoscope provided in an embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0039] A driving assembly is applied to an endoscope, which mainly includes a driving wheel 1, a driven wheel 3, and an adjustment module 4. The driving wheel 1 is the core part of the driving assembly, which is responsible for transmitting power to the entire system and controlling the bending movement of the endoscope front lens seat. The driving wheel 1 is rotatably installed in the housing 61 of the endoscope through a rotating shaft, and the design of the rotating shaft ensures its stable operation performance.

[0040] Structurally, one end of the rotating shaft of the driving wheel 1 passes through the housing 61, and the other end is rotatably connected to the inner housing 62 through the rotating shaft. The inner housing 62 is designed in the shape of a plate, and its main function is to support and install other important components, such as the control panel, the traction wheel 32, etc. The inner housing 62 is fixed in the housing 61 by bolts to ensure the rotation stability of the driving wheel 1 and prevent loosening or deviation during use. The material of the inner housing 62 is usually engineering plastic. The choice of this material not only provides sufficient mechanical strength, but also effectively enhances the corrosion resistance, and can withstand the wear and tear during long-term work and the influence of the external environment.

[0041] The driving wheel 1 can rotate around its axis under the drive of the adjustment control 2, and the adjustment control 2 can be a lever 21 or a dial wheel, etc., depending on the design requirements. The adjustment control 2 such as the lever 21 or the dial wheel is located outside the housing 61, which is easy to operate and can adjust the rotation angle of the driving wheel 1 within a certain range. The adjustment control 2 and the driving wheel 1 are detachably connected by bolts, which is convenient for later maintenance and replacement, and ensures stability and flexibility in long-term use.

[0042] The driven wheel 3 is a component linked to the driving wheel 1. Its main function is to be connected to the traction wheel 32 through a rotating shaft, drive the traction wheel 32 to rotate, thereby transmitting power to the traction rope 321, and finally drive the bending of the front end lens seat of the endoscope. The driven wheel 3 and the traction wheel 32 are coaxially fixedly connected through the rotating shaft. The design of the rotating shaft ensures the synchronous rotation of the driven wheel 3 and the traction wheel 32. When the driven wheel 3 rotates, the rotating shaft drives the traction wheel 32 to rotate, and the traction wheel 32 then drives the traction rope 321, thereby controlling the bending action of the front end lens seat of the endoscope.

[0043] Reference Figure 3 and Figure 4As shown, the driving wheel 1 is a truncated cone structure, and the driven wheel 3 is also a truncated cone structure, and the truncated cone direction of the driving wheel 1 is opposite to the truncated cone direction of the driven wheel 3. This design allows the two to achieve power transmission through the transmission wheel 41 in the adjustment module 4 without direct contact. Specifically, the driving wheel 1 and the driven wheel 3 are located on both sides of the transmission system, playing their own independent roles, avoiding wear and friction problems caused by direct contact, and ensuring the stability of the system during long-term use.

[0044] As a preferred embodiment, the taper design of the driving wheel 1 and the driven wheel 3 is the same. This consistent taper angle optimizes the cooperation between the transmission wheel 41 and the driving wheel 1 and the driven wheel 3. The transmission wheel 41 is located between the driving wheel 1 and the driven wheel 3, and transmits power by fitting with the outer conical surfaces of both. Since the tapers of the driving wheel 1 and the driven wheel 3 are consistent, the contact angle and pressure distribution between them are consistent, which reduces the difference in friction when the transmission wheel 41 slides along the conical surface, thereby improving the efficiency of power transmission.

[0045] In actual installation, the transmission wheel 41 is installed between the driving wheel 1 and the driven wheel 3, and fits with the outer conical surfaces of both. The outer shape design of the transmission wheel 41 matches the outer conical surfaces of the driving wheel 1 and the driven wheel 3, ensuring that it can effectively contact the outer conical surfaces of the two wheels, thereby achieving efficient power transmission. When the driving wheel 1 rotates, the transmission wheel 41 obtains power and transmits it to the driven wheel 3 by contacting the outer conical surface of the driving wheel 1. Since the tapers of the two are the same, the transmission wheel 41 can maintain uniform friction on the contact surface, thereby ensuring stability during power transmission.

[0046] The transmission wheel 41 can not only transmit power, but also slide along the outer conical surfaces of the driving wheel 1 and the driven wheel 3. Specifically, the transmission wheel 41 can move along the tangent direction 410 between the outer conical surface of the driving wheel 1 and the outer conical surface of the driven wheel 3. The moving direction A of the transmission wheel is as shown in FIG. Figure 2 As shown. This design enables the transmission wheel 41 to flexibly adjust the contact pressure and contact angle between the two, thereby controlling the efficiency of power transmission and the transmission ratio. In actual work, the sliding of the transmission wheel 41 in the tangential direction 410 can be adjusted as needed to optimize the power transmission process and avoid energy loss caused by uneven friction.

[0047] It is worth noting that when adjusting the transmission wheel 41, the lever 21 or the dial wheel or other adjustment control unit 2 needs to be in the initial position. The initial position refers to the initial position of the lever 21 or the dial wheel or other structures when the active bending section is in a vertical state. The purpose of this design is to ensure that when adjusting the transmission wheel 41, the tension lengths of the two traction ropes 321 connected to the traction wheel 32 are consistent, thereby avoiding uneven power of the traction wheel 32 due to improper adjustment, which affects its normal operation.

[0048] If the lever 21 or the dial wheel does not return to the initial position and the adjustment transmission wheel 41 continues to rotate, this may cause the traction wheel 32 to have unstable tension during operation due to the difference in tightness of the two traction ropes 321, thereby affecting the accuracy of the entire bending control system. In this case, the difference in tension of the traction rope 321 will directly affect the movement of the lens holder at the front end of the endoscope, so that the bending angle of the active bending section may not be accurately controlled, thereby affecting the accuracy and safety of the surgical operation.

[0049] In addition, the design of the traction wheel 32 itself has an automatic reset function. When the doctor adjusts the displacement of the transmission wheel 41, the traction wheel 32 has automatically reset, so the doctor does not need to pay extra attention to whether the lever 21 or the dial wheel and other structures have returned to the initial position. This design simplifies the operation process, avoids the risk of misoperation caused by forgetting to reset the traction wheel 32, and makes the operation easier and safer. The doctor can adjust the transmission wheel 41 without worrying about the instability that may be caused by the failure to reset the traction wheel 32.

[0050] As a preferred embodiment, the rotation axes of the driving wheel 1, the driven wheel 3 and the transmission wheel 41 are in the same plane, which can effectively reduce the transmission error between the wheels and ensure the stability of power transmission. By designing the rotation axes in the same plane, the various components can maintain a consistent geometric relationship during operation, thereby achieving more efficient power transmission.

[0051] As an optional embodiment, the size of the transmission wheel 41 is significantly smaller than the size of the driving wheel 1 and the driven wheel 3. This design allows the transmission wheel 41 to work more compactly with the driving wheel 1 and the driven wheel 3 in the same housing 61, which helps to reduce the occupied space of the overall structure, thereby optimizing the layout of the endoscope drive assembly. The smaller transmission wheel 41 is not only conducive to space saving, but also reduces unnecessary weight, thereby improving the response speed and control flexibility of the entire drive assembly.

[0052] As an optional embodiment, the adjustment module 4 can also be in the form of a connecting belt. Specifically, the connecting belt is an annular structure, which is sleeved around the driving wheel 1 and the driven wheel 3, and the displacement adjustment of the connecting belt is realized by an external control device. By moving the connecting belt, the transmission ratio between the driving wheel 1 and the driven wheel 3 can be easily adjusted. Adjusting the position of the connecting belt can change the part where it contacts the driving wheel 1 and the driven wheel 3, thereby affecting the power transmission relationship and transmission ratio between the two wheels.

[0053] In this embodiment, refer to Figure 6-Figure 8As shown, the transmission wheel 41 includes a contact portion 411 and a mounting portion 412. The contact portion 411 is an annular thin sheet structure, which is mainly used to contact the outer conical surface of the driving wheel 1 and the outer conical surface of the driven wheel 3. The contact portion 411 adopts a sheet design, and its thickness along the axial direction of the transmission wheel 41 is not more than 3mm. The reason for this design is that the outer walls of the driving wheel 1 and the driven wheel 3 are conical, and their linear velocities are different at different positions. If the thickness of the contact portion 411 is too large, when the contact portion 411 contacts the outer wall of the cone, due to the difference in linear velocity, it may cause sliding between the contact portion 411 and the driving wheel 1 or the driven wheel 3, thereby affecting the effective transmission of power. By controlling the thickness of the contact portion 411 within a small range, the risk of slipping can be minimized, ensuring better contact between the contact portion 411 and the outer conical surface, thereby improving the power transmission efficiency.

[0054] A rubber ring 5 is fixedly sleeved on the mounting portion 412. When the rubber ring 5 is installed, the rubber ring 5 and the mounting portion 412 can be fixed by glue, and the diameter of the rubber ring 5 is at least not less than the diameter of the contact portion 411. The main function of the rubber ring 5 is to improve the contact and friction between the transmission wheel 41 and the driving wheel 1 and the driven wheel 3. During the transmission process, the rubber ring 5 contacts the outer conical surface of the driving wheel 1 and the driven wheel 3, and the friction is increased to avoid the transmission effect caused by the slipping phenomenon between the contact portion 411 and the outer conical surface. Since the rubber ring 5 has a certain deformation characteristic, even if its diameter is larger than the diameter of the contact portion 411, the rubber ring 5 can be compressed under the action of external force, thereby effectively maintaining good contact with the outer conical surface of the driving wheel 1 and the driven wheel 3, ensuring that the torque can be stably transmitted. The use of rubber material can not only effectively reduce sliding losses, but also improve the stability of the system. In particular, after long-term use, the rubber ring 5 can maintain the consistency of the contact surface and reduce the performance degradation caused by uneven friction. The elastic property of the rubber ring 5 enables it to adaptively adjust the contact state when the load changes, further ensuring the stability of power transmission.

[0055] As an optional embodiment, refer to Figure 6-Figure 8 As shown, the outer wall of the rubber ring 5 can be designed in a straight line or a wavy shape. The straight outer wall presents a smooth straight line profile. This design can provide uniform and stable friction and is suitable for application environments that require high-precision transmission; while the wavy outer wall presents a continuous wave curve extending along the axial direction. This wavy outer wall design can increase the contact surface between the driving wheel 1 and the outer conical surface of the driven wheel 3, forming dynamic contact during the force transmission process, further improving friction and stability, and is suitable for higher loads or more complex use conditions. The shape of the wavy outer wall can optimize the contact mode according to actual use conditions and reduce slippage caused by vibration or uneven loads.

[0056] As an optional embodiment, at least one side of the contact portion 411 along the axial direction of the transmission wheel 41 is bonded with a rubber ring 5 by high-strength glue. Figure 7 As shown, the rubber ring 5 can be located on both sides of the contact portion 411 to ensure that the transmission wheel 41 is evenly in contact with the driving wheel 1 and the driven wheel 3 over the entire contact surface, thereby providing more stable power transmission. Figure 8 As shown, another arrangement is that the contact portion 411 is located on one side of the rubber ring 5. This design can simplify the structure and concentrate the action of the rubber ring 5 on the key position of the contact portion 411, thereby optimizing the friction transmission effect and ensuring that sliding or slipping is not likely to occur during the transmission process.

[0057] Reference Figure 4 and Figure 5 As shown, the adjustment module 4 includes a movable rod 42, and the transmission wheel 41 is rotatably mounted on the movable rod 42. The movable rod 42 has a limiting end 421, and the limiting end 421 is configured to limit the sliding of the transmission wheel 41 relative to the movable rod 42 along its axial direction to ensure that the transmission wheel 41 does not move or fall off unnecessarily during operation. Specifically, the limiting end 421 can be a cotter pin 4212, and a limiting groove 4211 is provided on the movable rod 42. The cotter pin 4212 is inserted into the limiting groove 4211 to limit the transmission wheel 41, and the movable rod 42 is movably mounted on the housing 61.

[0058] As an optional embodiment, the movable rod 42 can be directly slidably installed on the housing 61, and the doctor can directly operate the displacement of the transmission wheel 41 by pulling the movable rod 42. This design allows the operator to adjust the transmission wheel 41 by simply pulling the movable rod 42 without having to perform complicated operations, further improving the operating efficiency and convenience of the device.

[0059] As an optional embodiment, refer to Figure 2-Figure 4 As shown, the adjustment module 4 also includes an operating rod 43, and the movable rod 42 is connected to the operating rod 43 by a threaded connection to form a mutual cooperation with the operating rod 43, so as to achieve the position adjustment of the movable rod 42. The operating rod 43 is rotatably arranged outside the shell 61 and is connected to the rotation of the inner shell 62. A locking portion 611 is provided on the inner shell 62, and the locking portion 611 is used to limit the rotation of the movable rod 42 in the axial direction to avoid unnecessary rotation or sliding of the movable rod 42 during the adjustment process. Specifically, the outer peripheral cross-section of the movable rod 42 is designed to be square, and the locking portion 611 on the inner shell 62 is a square groove body. The movable rod 42 is slidably connected in the groove body. This design effectively limits the rotation of the movable rod 42 to ensure that it only moves linearly along the axial direction.

[0060] In addition, a knob 431 is fixedly mounted on the end of the operating rod 43, and the knob 431 is fixed to the operating rod 43 by means of a screw 4311 or an integral connection, so that the operator can adjust the rotation of the operating rod 43. The design of the knob 431 makes the operation more convenient, and the operator can adjust the position of the movable rod 42 by rotating the operating rod 43, thereby accurately controlling the movement of the transmission wheel 41.

[0061] The housing 61 is provided with a stopper 612, which is used to limit the movement of the movable rod 42 in the axial direction and prevent it from being separated from the outer walls of the transmission wheel 41 and the driving wheel 1 and the driven wheel 3. Specifically, the stopper 612 is composed of the bottom wall of the sliding groove 6111 opened on the housing 61 and the end wall of the inner housing 62 abutting against the movable rod 42. When the movable rod 42 moves to the bottom wall of the sliding groove 6111 or abuts against the inner housing 62, the stopper 612 will effectively limit the movable rod 42.

[0062] As another optional embodiment, refer to Fig. 9 and Fig.10 As shown, the operating rod 43 is directly connected to the outer shell and the inner shell 62 by rotation, the sliding groove 6111 is opened on the inner shell 62, and the movable rod 42 and the operating rod 43 are connected by threads. The sliding groove 6111 of the inner shell 62 adopts a square groove design, and the shape of the movable rod 42 matches the sliding groove 6111, so that the movable rod 42 can only slide along the length direction of the sliding groove 6111, and cannot rotate. Through this design, the movement of the movable rod 42 is limited to axial sliding, avoiding unnecessary rotation, thereby improving the adjustment accuracy.

[0063] The stopper 612 is located at the bottom wall of the sliding groove 6111 of the inner shell 62 and the end of the operating rod 43 that contacts the movable rod 42. Specifically, the design of the stopper 612 ensures that the movable rod 42 can effectively stop during the sliding process, preventing the movable rod 42 from exceeding a predetermined range and causing the transmission wheel 41 or the driving wheel 1 and the driven wheel 3 to fall off.

[0064] As an optional embodiment, the outer conical surface of the driving wheel 1, the outer conical surface of the driven wheel 3, and the outer peripheral surface of the contact portion 411 are all provided with a frosted layer 31. The provision of the frosted layer 31 can effectively increase the friction between the driving wheel 1, the driven wheel 3 and the contact portion 411, and avoid slipping during the transmission process. This design is particularly suitable for scenarios requiring high-precision control and stable power transmission, and can ensure that the friction remains stable under heavy loads or long-term use, thereby improving the reliability of the system. In addition, the structure of the frosted layer 31 can also reduce wear and extend the service life of components, especially in the case of high-frequency operation, which can effectively improve the working efficiency of the endoscope.

[0065] As an optional embodiment, refer to Figure 1 and Figure 2As shown, the tapered smaller diameter side of the driving wheel 1 faces the inner side of the housing 61, and the tapered larger diameter side of the driven wheel 3 faces the inner side of the housing 61. This design helps to improve the spatial layout of the transmission wheel 41 group, avoiding the influence of the flexibility of operation due to insufficient space or too dense components. In particular, during the operation, the operating rod 43 can be inserted obliquely between the driving wheel 1 and the driven wheel 3 through the reasonable layout of this structure, thereby expanding the space between the hand-operated lever 21 or the dial wheel and the operating rod 43, making the doctor's hand movements more comfortable and flexible.

[0066] As an optional embodiment, the absolute value of the taper difference between the driving wheel 1 and the driven wheel 3 is not greater than 5 degrees. By controlling the taper difference between the driving wheel 1 and the driven wheel 3 within a smaller range, it can be ensured that the contact surface between the two is smoother during the transmission process, and the friction unevenness and power loss caused by the large taper difference can be reduced. A smaller taper difference helps to improve the transmission efficiency, make the driving process smoother, and reduce the vibration and noise of the mechanical structure.

[0067] At the same time, the moderate taper difference design also provides a certain flexibility for the transmission system. In particular, when the transmission wheel 41 is made of rubber, the deformation characteristics of the rubber can effectively adapt to the taper difference between the driving wheel 1 and the driven wheel 3. Through the deformation of the rubber ring 5, it can better adapt to the small taper difference between the two, ensuring that in the actual transmission process, the contact surface always maintains good friction and stable power transmission. This design not only improves the adaptability of the transmission system, but also effectively reduces the uneven friction and damage caused by imperfect matching between components in long-term use.

[0068] The second aspect of the present invention provides an endoscope handle, including the driving assembly of the above technical solution, wherein the operating handle 6 realizes the bending control of the endoscope insertion portion 60 through the driving assembly. The driving assembly can accurately adjust the bending angle of the endoscope according to the manipulation of the operator, thereby improving the flexibility and accuracy of the endoscope operation.

[0069] The third aspect of the present invention provides an endoscope, including the endoscope operating handle 6 of the above technical solution, and an insertion portion 60 is installed at the front end of the operating handle 6. The insertion portion 60 realizes the precise bending and positioning of the lens seat at the front end of the endoscope through the control of the driving component, so as to provide a flexible and stable field of view in various medical operations.

[0070] The endoscope referred to 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.

[0071] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out 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 reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0072] 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, characterized in that: include: A driving wheel (1), the driving wheel (1) being rotatably mounted on the housing (61) and capable of rotating around its axis under the drive of the adjustment control unit (2); A driven wheel (3), the driven wheel (3) being configured to be connected to the proximal end of the traction rope (321); An adjustment module (4), the adjustment module (4) being connected between the driving wheel (1) and the driven wheel (3), and being used to adjust the transmission ratio between the driving wheel (1) and the driven wheel (3).

2. A drive assembly according to claim 1, characterized in that: The driving wheel (1) is a truncated cone structure, the driven wheel (3) is also a truncated cone structure, and the truncated cone of the driving wheel (1) is oriented in the opposite direction to the truncated cone of the driven wheel (3); The regulating module (4) comprises a transmission wheel (41), the transmission wheel (41) being arranged between the driving wheel (1) and the driven wheel (3) and being in contact with the outer conical surfaces of both, and being used for transmitting the power of the driving wheel (1) to the driven wheel (3), the transmission wheel (41) being able to move along the tangent direction (410) of the outer conical surfaces of the driving wheel (1) and the driven wheel (3).

3. A drive assembly according to claim 2, characterized in that: The transmission wheel (41) comprises a contact portion (411) and a mounting portion (412), wherein: The contact portion (411) is an annular structure, and is used to contact the outer conical surface of the driving wheel (1) and the outer conical surface of the driven wheel (3); the contact portion (411) is a sheet body; A rubber ring (5) is provided on the mounting portion (412), and the diameter of the rubber ring (5) is at least not less than the diameter of the contact portion (411).

4. A drive assembly according to claim 3, characterized in that: The outer wall of the rubber ring (5) is in a straight line or a wavy shape, wherein the straight line outer wall presents a smooth straight line profile, and the wavy outer wall presents a continuous wave curve extending along the axial direction; And / or, the rubber ring (5) is provided on at least one side of the contact portion (411) along the axial direction of the transmission wheel (41).

5. A drive assembly according to claim 2, characterized in that: The regulating module (4) comprises a movable rod (42), the transmission wheel (41) is rotatably arranged on the movable rod (42), the movable rod (42) has a limiting end (421), and the limiting end (421) is configured to limit the sliding of the transmission wheel (41) relative to the movable rod (42) along its axial direction, and the movable rod (42) is movably arranged on the housing (61).

6. A drive assembly according to claim 5, characterized in that: The regulating module (4) further comprises an operating rod (43), the operating rod (43) being rotatably arranged to pass through the housing (61), the movable rod (42) and the operating rod (43) being threadedly connected to each other, and the housing (61) having a locking portion (611), the locking portion (611) being used to limit the movable rod (42) from rotating in an axial direction.

7. A drive assembly according to claim 6, characterized in that: The housing (61) has a stop portion (612), the stop portion (612) being used to abut against the end of the movable rod (42) to limit the transmission wheel (41) from separating from the outer walls of the driving wheel (1) and the driven wheel (3) during the process of moving in the axial direction; And / or, the outer conical surface of the driving wheel (1), the outer conical surface of the driven wheel (3), and the outer peripheral surface of the contact portion (411) are all provided with a frosted layer (31); And / or, the tapered smaller diameter side of the driving wheel (1) faces the inside of the housing (61), the tapered larger diameter side of the driven wheel (3) faces the inside of the housing (61), and the operating rod (43) is inserted obliquely between the driving wheel (1) and the driven wheel (3) to expand the space between the hand-operated adjustment control (2) and the operating rod (43).

8. A drive assembly according to claim 3, characterized in that: The absolute value of the taper difference between the driving wheel (1) and the driven wheel (3) is no greater than 5 degrees.

9. An endoscope handle, comprising the drive assembly according to any one of claims 1 to 8.

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

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