Endoscope and operation part thereof

Abstract

The utility model provides an endoscope and an operating portion thereof, the operating portion comprises a shell, a transmission assembly and a shifting part, the shell is provided with an inner cavity, the transmission assembly is arranged in the inner cavity, the shifting part is at least partially arranged outside the shell and connected with the transmission assembly, and when the shifting part is rotated, the transmission assembly enables the bending angle of the endoscope to change; the transmission assembly comprises a transmission part and a braking part which synchronously rotate around a transmission shaft, and a plurality of braking grooves are formed around the periphery of the braking part; and at least part of the locking structure is arranged outside the shell and can move to extend into one brake groove so as to lock the movement of the transmission assembly. According to the endoscope and the operation part thereof, the brake part is fixed on the transmission assembly, the brake grooves are formed around the periphery of the brake part, and the locking structure capable of moving to the brake grooves is arranged outside the shell. When the endoscope needs to be locked, the locking structure is controlled to move to extend into a braking groove in the braking part, so that the movement of the braking part and the transmission part is limited, and the locking effect is achieved.

Description

Technical Field

[0001] This application relates to the field of medical testing technology, and in particular to an endoscope and its operating part. Background Technology

[0002] With the development of the medical industry, endoscopic technology has become increasingly sophisticated. In current minimally invasive endoscopic surgeries, in order to achieve precise and flexible operation within complex and narrow human body areas, endoscopes typically employ a combination of a lens, a skeletal frame, and a traction rope. A lever is used to control the pulling of the traction rope, thereby adjusting the angle and position of the skeletal frame, which in turn controls the angle and position of the lens. This allows the lens to move smoothly within narrow cavities to monitor images within the abdominal cavity.

[0003] Currently available endoscopes lack a stable locking mechanism. Without sustained force, the element end tends to spring back after being subjected to force, making it impossible to maintain the same direction and angle. Therefore, medical staff need to continuously press the lever during surgery, which consumes their energy and leads to instability and poor accuracy of the endoscope after insertion. Utility Model Content

[0004] In view of this, it is necessary to provide an endoscope with a stable bending angle and its operating part to solve the above problems.

[0005] This application provides an endoscope operating unit, including:

[0006] The endoscope comprises a housing, a transmission assembly, and an actuating element. The housing has an inner cavity, the transmission assembly is disposed in the inner cavity, and the actuating element is at least partially disposed outside the housing and connected to the transmission assembly. When the actuating element is rotated, the transmission assembly causes the bending angle of the endoscope to change.

[0007] The transmission assembly includes a transmission part and a braking part that rotate synchronously around its transmission shaft, and a plurality of braking grooves are formed around the outer periphery of the braking part.

[0008] A locking structure, at least partially located outside the housing and movable to extend into one of the brake grooves, locks the movement of the transmission assembly.

[0009] In at least one embodiment of this application, the locking structure includes a pressing member rotatably disposed on the housing, wherein when the pressing member is rotated in a first direction, the locking structure extends into one of the braking grooves, and when the pressing member is rotated in a second direction, the locking structure exits the braking grooves.

[0010] In at least one embodiment of this application, the locking structure further includes a fixing seat;

[0011] The housing is provided with a fixing groove and a sliding groove that communicates with the fixing groove and the inner cavity;

[0012] The fixing seat is fixed in the fixing groove, and the fixing seat has a pressing cavity that communicates with the sliding groove;

[0013] The pressing element is rotatably disposed within the pressing cavity.

[0014] In at least one embodiment of this application, the fixing seat has an inner wall surface located inside the pressing cavity and facing each other, and the pressing member has an outer wall surface facing the inner wall surface of the fixing seat. On the inner wall surface of the fixing seat and the outer wall surface of the pressing member, one of them is provided with at least one limiting protrusion, and the other is provided with at least one limiting groove or limiting hole. At least when the locking structure extends into one of the braking grooves, the limiting protrusion is engaged with the limiting groove or the limiting hole to restrict the rotation of the pressing member.

[0015] In at least one embodiment of this application, a sliding groove communicating with the limiting groove or the limiting hole is formed on the inner wall surface or the outer wall surface where the limiting groove or the limiting hole is located. When the pressing member rotates, the limiting protrusion slides into or out of the limiting groove or the limiting hole along the sliding groove.

[0016] In at least one embodiment of this application, the inner wall surface of the fixing base is provided with a rotating groove or rotating hole facing each other on a first surface and a second surface.

[0017] The pressing member is symmetrically provided with rotating shafts on the outer wall surface, and the rotating shafts extend into the rotating grooves or rotating holes that are directly opposite each other.

[0018] In at least one embodiment of this application, the locking structure further includes a locking component, one end of which is disposed on the pressing member, and the other end is provided with a ball bearing, which slides or rolls to extend into or retract from the braking groove.

[0019] In at least one embodiment of this application, the brake groove has an inclined surface or an arc surface, and the ball slides or rolls along the inclined surface or arc surface when it extends into or exits the brake groove.

[0020] In at least one embodiment of this application, the inner wall of the brake groove is spherical.

[0021] In at least one embodiment of this application, the locking assembly further includes a fixing member and an elastic member;

[0022] One end of the fixing member is provided on the pressing member, and the other end has a fixing cavity, and the elastic member is provided in the fixing cavity;

[0023] The ball bearing is located at the end of the elastic element away from the pressing element.

[0024] An endoscope includes an endoscope operating section as described above.

[0025] The endoscope and its operating part provided above have multiple braking grooves around the outer periphery of the rotating part of the transmission assembly, and a locking structure that can move to the braking grooves is provided outside the housing. When the bending angle of the endoscope needs to be locked, the locking structure is controlled to move into one of the braking grooves to restrict the movement of the transmission assembly and achieve the effect of locking the bending angle. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the endoscope operating section in one embodiment of this application.

[0027] Figure 2 This is a three-dimensional structural diagram of the transmission components, pull-out parts, traction rope, and locking structure of the endoscope operating unit in the unlocked state.

[0028] Figure 3 This is a three-dimensional structural diagram of the transmission and braking parts.

[0029] Figure 4 This is a side view of the endoscope operating section in the unlocked state.

[0030] Figure 5 This is a cross-sectional view of the endoscope's operating section in the unlocked state.

[0031] Figure 6 This is an exploded view of the locking structure.

[0032] Figure 7 This is a three-dimensional structural diagram of the transmission components, pulling parts, traction rope, and locking structure of the endoscope operating unit in the locked state.

[0033] Figure 8 This is a side view of the endoscope operating section in the locked position.

[0034] Figure 9 This is a cross-sectional view of the endoscope operating section in the locked position.

[0035] Figure 10 This is a cross-sectional view of a laparoscopy.

[0036] Explanation of main component symbols

[0037] 100. Endoscope; 10. Housing; 10a. Inner cavity; 10b. Fixing groove; 20. Transmission assembly; 22. Rack; 23. Transmission part; 24. Braking part; 24a. Braking groove; 30. Actuating element; 40. Traction rope; 60. Locking structure; 61. Fixing seat; 61a. Pressing cavity; 61b / 61c. Inner wall surface; 61d. Rotating groove / rotating hole; 611 / 612. Limiting protrusion; 62. Pressing element; 62a / 62b. Outer wall surface; 62c / 62d. Limiting groove / limiting hole; 62e. Pressing surface; 621. Rotating shaft; 622 / 623. Slide groove; 63. Locking assembly; 631. Fixing element; 631a. Fixing cavity; 632. Ball bearing; 633. Elastic element. Detailed Implementation

[0038] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0039] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0040] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] Example 1

[0042] To facilitate understanding of this procedure, it's important to note that an endoscope is a tool used in minimally invasive surgery, typically for observing and manipulating organs within the abdominal cavity. In endoscopic surgery, after preoperative preparation, the patient lies supine on the operating table. Medical staff puncture the abdominal wall at the umbilicus or other designated site using a pneumoperitoneum needle, introducing carbon dioxide into the abdominal cavity to inflate it. Then, a trocar is inserted into the abdominal cavity, and a small incision of 0.5-1 cm is made at the umbilicus or other site to insert other instruments. The endoscope is inserted through the trocar into the abdominal cavity, and connected to a cold light source to emit light at its tip, allowing for observation and examination of the patient's abdominal tissues or organs in conjunction with other instruments.

[0043] Please see Figure 1 , Figure 2 and Figure 10Embodiment 1 of this application provides an endoscope operating part, including a housing 10, a transmission assembly 20, an actuating member 30, and a locking structure 60. Specifically, the housing 10 has an inner cavity 10a, the transmission assembly 20 is disposed in the inner cavity 10a, and one end of the transmission assembly 20 is connected to a traction rope 40, which is connected to the bending part of the endoscope. The actuating member 30 is at least partially disposed outside the housing 10 and connected to the transmission assembly 20. Medical personnel operate the actuating member 30 to move the transmission assembly 20, which in turn moves the traction rope 40 to adjust the bending angle of the endoscope.

[0044] Specifically, the transmission assembly 20 includes a transmission part 23 and a braking part 24 that rotate synchronously around its transmission shaft. Multiple braking grooves 24a are formed around the outer periphery of the braking part 23. A locking structure 60 is at least partially located outside the housing 10 and is movable to extend into one of the braking grooves 24a to lock the movement of the transmission assembly 20. This solution, by having the locking structure 60 at least partially located outside the housing 10 and movable until it extends into a braking groove 24a, allows medical personnel to press the locking structure 60 to extend it into a locking groove 24a when adjusting the endoscope element to a suitable angle using the actuator 30. This locking structure locks the braking part 24, thereby locking the curved portion of the endoscope and ensuring the stability of its bending angle.

[0045] In one specific embodiment, such as Figure 2 and Figure 3 As shown, the transmission part 23 and the braking part 24 are separate components. Specifically, the braking part 24 is generally a disc-shaped structure, and the transmission part 23 can be a gear or connecting shaft provided on the side of the braking part 24, or it can be an inner ring structure of a disc integrally formed with the braking part 24, or it can be other components that can be integrally formed with the braking part 24.

[0046] In another specific embodiment, the transmission part 23 and the braking part 24 may also be integrally formed components. For example, the braking part 24 may be a disc structure for braking that is integrally formed and protrudes from the transmission assembly 20, and the transmission part 23 may be a transmission shaft structure that protrudes from the braking part 24 and is connected to the actuating member 30.

[0047] In one embodiment, the toggle 30 is generally a "U"-shaped lever structure.

[0048] Furthermore, the locking structure 60 includes a pressing member 62 rotatably disposed on the housing 10. When the pressing member 62 rotates in a first direction, the locking structure 60 extends into a braking groove 24a. When the pressing member 62 rotates in a second direction, the locking structure 60 disengages from the braking groove 24a.

[0049] Please see details. Figures 5-9As can be seen, in one specific embodiment, the pressing member 62 is roughly a button structure, and the first direction is... Figure 5 The counterclockwise direction mentioned above, the second direction is Figure 5 The clockwise direction is shown in the diagram. The pressing member 62 is rotatably mounted on the housing 10. When medical personnel need to lock the endoscope, they push the pressing member 62 to rotate counterclockwise until one end of the locking structure 60 extends into a locking groove 24a. At this time, the locking structure 60 restricts the movement of the transmission assembly 20 to lock the endoscope's bending angle. When medical personnel need to unlock the endoscope's bending angle, they rotate the pressing member 62 clockwise, causing the locking structure 60 to rotate and move one end out of the locking groove 24a until it extends outside the housing 10, thereby unlocking the endoscope.

[0050] It is understood that the type of the pressing element 62 is not limited to this. For example, in another embodiment, the pressing element 62 can also be a straight button, etc. The button passes through the housing 10 and enters the inner cavity 10a, and a latching structure is provided between the housing 10 and the button. When medical personnel need to lock the endoscope, they press the pressing element 62 to make it extend into the locking groove 24a. At this time, the latching structure locks the pressing element. When medical personnel need to unlock the endoscope, they press the pressing element 62 again, and the pressing element 62 disengages from the latching structure and pops back out of the locking groove 24a, thereby unlocking the endoscope.

[0051] Please refer to the following for details. Figure 2 In one specific embodiment, the transmission assembly 20 of this application further includes a rack 22. Further, an actuating element 30 is disposed outside the housing 10 and fixed to the transmission part 23. The rack 22 meshes with the transmission part 23, and the rack 22 is connected to a traction rope 40, which is connected to a snake skeleton. Thus, when adjusting the direction and angle of the endoscope 100, medical personnel can rotate the actuating element 30 to drive the transmission part 23 to rotate, thereby driving the rack 22 to rotate, which in turn drives the traction rope 40 and the snake skeleton to move, thereby achieving the adjustment of the angle and direction of the endoscope 100.

[0052] To facilitate better insertion of the locking structure 60 into a braking groove 24a, in one specific embodiment, the locking structure 60 includes a fixing seat 61 and a locking assembly 63. Specifically, the housing 10 has a fixing groove 10b and a sliding groove (not shown) communicating with the fixing groove 10b and the inner cavity 10a. The fixing seat 61 is fixed in the fixing groove 10b, and the fixing seat 61 passes through a pressing cavity 61a communicating with the sliding groove. The pressing member 62 is rotatably disposed in the pressing cavity 61a. One end of the locking assembly 63 is disposed on the pressing member 62, and the other end extends into the inner cavity 10a through the sliding groove, for directly extending into or out of a braking groove 24a as the pressing member 62 rotates.

[0053] It should be noted that the fixing groove 10b is an inner groove structure on the housing 10. The fixing seat 61 is fixed in the fixing groove 10b, and the pressing cavity 61a, which is connected to the sliding groove, passes through the fixing seat 61. By rotatably disposing the pressing member 62 in the pressing cavity 61a, so that part of the pressing member 62 protrudes from the housing 10, most of the locking structure 60 is hidden inside the housing 10, thereby reducing the overall volume.

[0054] In one specific embodiment, the fixing base 61 is fixed in the fixing groove 10b by screws. However, it is obviously not limited to this. For example, in another embodiment, the fixing base 61 is integrally formed with the housing 10 in the fixing groove 10b.

[0055] Please continue reading. Figure 6 To facilitate the rotatable placement of the pressing member 62 within the pressing cavity 61a, the fixing base 61 has an inner wall surface 61b / 61c located in and facing the pressing cavity 61a. The pressing member 62 has an outer wall surface 62a / 62b facing the inner wall surface 61b / 61c of the fixing base 61. One of these surfaces has at least one limiting protrusion 611 / 612, and the other has at least one corresponding limiting groove or limiting hole 62c / 62d. Thus, when at least the locking structure 60 extends into one braking groove 24a, the limiting protrusion 611 / 612 engages with the limiting groove or limiting hole 62c / 62d to restrict the rotation of the pressing member 62, stabilizing the pressing member 62 in this position, and providing a tactile / audible feedback to the user when fully engaged. Furthermore, when the locking structure 60 exits the brake groove 24a and the pressing member 62 rotates to another position, corresponding limiting protrusions and matching limiting grooves / holes can be provided to keep the locking structure 60 outside the brake groove 24a, thus preventing accidental locking. The limiting protrusions and matching limiting grooves / holes can be an even number symmetrically distributed on both rotating ends of the pressing member 62, such as... Figure 6 As shown, the pressing member 62 is kept stable when rotated to two extreme positions; the limiting protrusion and the matching limiting groove / limiting hole can also be distributed on the two outer wall surfaces 62a and 62b at the same time to achieve uniform force distribution.

[0056] In such Figure 5 and Figure 9 In the illustrated embodiment, during endoscopic surgery, after the medical staff adjusts the bending angle of the endoscope using the actuating element 30, they press the pressing element 62 to cause it to rotate counterclockwise. At this time, the limiting protrusion 612 disengages from the limiting hole 62d (see...). Figure 5 During the continuous rotation of the pressing member 62, the limiting protrusion 611 is engaged within the limiting hole 62c. At this point, the locking structure 60 extends into a locking groove 24a to lock the transmission assembly 20.

[0057] When it is necessary to unlock the endoscope, medical staff press the pressing piece 62 clockwise to disengage the limiting protrusion 611 from the limiting hole 62c until the limiting protrusion 612 is locked within the limiting hole 62d. At this time, the locking structure 60 disengages from the locking groove 24a, thereby unlocking the transmission component.

[0058] It should be noted that the limiting protrusions 611 / 612 can be entirely disposed on the inner wall surface 61b / 61c of the fixed base 61 or the outer wall surface 62a / 62b of the pressing member 62, or partially disposed on the inner wall surface 61b / 61c of the fixed base 61 and partially disposed on the outer wall surface 62a / 62b of the pressing member 62. Similarly, the limiting grooves or limiting holes (62c / 62d) need to be correspondingly disposed to the limiting protrusions 611 / 612, that is, entirely disposed on the inner wall surface 61b / 61c of the fixed base 61 or the outer wall surface 62a / 62b of the pressing member 62. Furthermore, the number and location of the limiting protrusions 611 / 612 and the limiting grooves or limiting holes (62c / 62d) are not limited, and any component or structure that can lock and unlock the pressing member 62 and the fixed base 61 is acceptable.

[0059] Furthermore, on the inner wall surface 61b / 61c or the outer wall surface 62a / 62b where the limiting groove or limiting hole (62c / 62d) is located, a sliding groove 622 / 623 communicating with the limiting groove or limiting hole (62c / 62d) is also provided, for the limiting protrusion 611 / 612 to slide inside it, so as to slide into or out of the limiting groove or limiting hole (62c / 62d), thereby completing the locking and unlocking state of the endoscope operation unit 100.

[0060] Please continue reading. Figure 6 In one specific embodiment, in order to make the rotation of the pressing member 62 more flexible, the inner wall surface 61b / 61c of the fixed base 61 is provided with a rotating groove / rotating hole (61d) facing each other on the first and second surfaces. The outer wall surface 62a / 62b of the pressing member 62 is symmetrically provided with a rotating shaft 621, which extends into the rotating groove / rotating hole (61d) respectively.

[0061] It should be noted that, based on this specific embodiment, if a further sliding groove 622 / 623 is required, the sliding groove 622 / 623 can be set as an arc with the center of the rotation shaft 621 as the origin. When the pressing member 62 is pressed by a medical staff member, the pressing member 62 rotates about the rotation shaft 621. At this time, the limiting protrusions 611 / 612 slide within the sliding groove 622 / 623. Furthermore, because the sliding groove 622 / 623 is arranged with the rotation shaft 621 as the axis and the arc shape is centered on the rotation shaft 621, the limiting protrusions 611 / 612 can slide freely within the sliding groove 622 / 623 when the pressing member 62 rotates. To avoid the problem that the limiting protrusions 611 / 612 may be blocked by the inner wall of the slide groove 622 / 623 and thus not slide smoothly when sliding because the shape of the slide groove 622 / 623 does not match the movement trajectory of the limiting protrusions 611 / 612.

[0062] It should be noted that, in one specific embodiment, after the locking structure 60 is assembled (i.e., when the rotating shaft 621 of the pressing member 62 extends into the rotating hole 61d on the fixed base 61), the limiting groove / limiting hole (62c / 62d) is located above the limiting protrusions 611 / 612, and the center of the rotating shaft 621 is located below the center of the limiting protrusions 611 / 612. When the medical staff switches the state of the endoscope operation section 100, they press the pressing member 62 downwards to drive one end of the limiting protrusions 611 / 612 to slide in the sliding groove 622 / 623, and the other end of the limiting protrusions 611 / 612 moves vertically to achieve the state switching.

[0063] Furthermore, when the pressing member 62 is configured as a vertically symmetrical structure along the center of its rotation axis 621, the distance from the center of gravity of the locking assembly 63 to the center of one of the limiting grooves 62c is less than its distance to the other limiting groove 62d. That is, the locking assembly 63 is closer to one of the limiting grooves 62c. When the locking assembly 63 is closer to one of the limiting grooves 62c, the medical staff applies force to the side of the limiting groove 62c closer to the locking assembly 63 to press the pressing member 62, so that under the fulcrum of the rotation axis 621, the pressing member 62 is driven to move until the limiting protrusion 611 extends into and locks into the limiting groove 62c, thereby locking the transmission assembly 20 to achieve the locking state. When the state of the endoscope operating unit 100 needs to be adjusted, the medical staff applies force to one side of the other limiting groove 62d to press the pressing member 62. The pressing member 62 rotates under the fulcrum of the rotating shaft 621 until another limiting protrusion 612 is locked in the other limiting groove 62d, thereby unlocking the endoscope operating unit 100. It is understood that the pressing member 62 can also be set as an asymmetrical structure. In this case, the position of the locking component 63 can be adaptively adjusted according to the structure of the pressing member 62, as long as its position and size can be matched with other structures to achieve entry or exit from the locking groove 24a after pressing. The asymmetrical pressing member 62 can provide the user with visual and tactile cues, making it easy to distinguish between the different states of bending angle locking and unlocking.

[0064] Specifically, the pressing member 62 has a pressing surface 62e that is opposite to the locking structure 60. The pressing surface 62e is used for medical personnel to press to drive the pressing member 62 to rotate about the rotation axis 621.

[0065] It should be noted that, in one specific embodiment, the pressing surface 62e is located on the top surface of the pressing member 62 and protrudes beyond the housing 10 to facilitate pressing by medical personnel. Preferably, the pressing surface 62e is a concave arc surface.

[0066] Please continue reading. Figure 5 The locking structure 60 also includes a locking component 63. Specifically, one end of the locking component 63 is disposed on the pressing member 62, and the other end is provided with a ball bearing 632, which slides or rolls to extend into or retract from the braking groove 24a. By configuring the locking component 63 and the ball bearing 632, the above solution ensures that during the process of the locking component 63 extending into the locking groove 24a to form a locked state, the ball bearing 632 first contacts the inner wall of the locking groove 24a, and then rolls or slides to allow the locking component 63 to enter the locking groove 24a. This avoids the problem of the locking component 63 having difficulty extending into the locking groove 24a due to friction caused by direct contact with the locking groove 24a.

[0067] Furthermore, the brake groove 24a has an inclined surface or an arc surface. When the ball 632 extends into or retracts from the brake groove 24a, it slides or rolls along the inclined surface or arc surface into the locking groove 24a, thereby reducing the difficulty of the ball 632 extending into or retracting from the locking groove 24a and facilitating operation by medical personnel. It can be understood that, in the above scheme, the brake groove 24a may also have other different surfaces that allow the ball 632 to enter, such as irregular surfaces.

[0068] In one specific embodiment, the inner wall of the brake groove 24a is spherical. Preferably, the inner spherical surface of the brake groove 24a is equal to the diameter of the ball 632, so that when the ball 632 slides into or rolls into the locking groove 24a, the ball 632 is completely embedded in the locking groove 24a, thereby maintaining the stability of the ball 632 and the endoscope operating part 100. It is understood that the shape of the inner wall of the brake groove 24a is not limited to this, and any structure that facilitates the ball 632 to roll into or slide into is acceptable. Further, the locking assembly 63 also includes a fixing member 631. The fixing member 631 is fixed to the pressing member 62, and the ball 632 is disposed at the end of the fixing member 631 away from the pressing member 62, for extending into or out of a brake groove 24a when the fixing member 631 rotates with the pressing member 62.

[0069] It should be noted that, in one specific embodiment, the fixing member 631 is a seat structure, with one end fixed to the pressing member 62 and the other end connected to the ball bearing 632, so as to support the ball bearing 632 on the pressing member 62. When the medical staff presses the pressing member 62, the ball bearing 632 is driven to extend into or out of a braking groove 24a. It is understood that the type of fixing member 631 is not limited to this; any structure that can be used to support the ball bearing 632 and drive the ball bearing 632 to move with the pressing member 62 is acceptable.

[0070] Furthermore, in one specific embodiment, the locking assembly 63 further includes an elastic element 633. Specifically, one end of the fixing element 631 is fixed to the pressing element 62, and the other end has a fixing cavity 631a. The elastic element 633 is disposed in the fixing cavity 631a, and the ball bearing 632 is disposed at the end of the elastic element 633 away from the pressing element 62.

[0071] It should be noted that the elastic element 633 is located in the fixed cavity 631a, and the ball 632 is located at the end of the elastic element 633 away from the pressing element 62. When the ball 632 extends into a braking groove 24a with the pressing element 62, the elastic element 633 drives the ball 632 to swing left and right to fit the braking groove 24a.

[0072] In one specific embodiment, the elastic element 633 is a spring.

[0073] Example 2

[0074] This second embodiment provides an endoscope 100, including the endoscope operating part as described in the first embodiment. It is understood that the endoscope operating part in the second embodiment is exactly the same as the endoscope operating part in the first embodiment, and therefore, the beneficial effects it produces are exactly the same, which will not be repeated here.

[0075] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. An endoscope operation section, characterized by comprising: include: The endoscope comprises a housing, a transmission assembly, and an actuating element. The housing has an inner cavity, the transmission assembly is disposed in the inner cavity, and the actuating element is at least partially disposed outside the housing and connected to the transmission assembly. When the actuating element is rotated, the transmission assembly causes the bending angle of the endoscope to change. The transmission assembly includes a transmission part and a braking part that rotate synchronously around its transmission shaft, and a plurality of braking grooves are formed around the outer periphery of the braking part. A locking structure, at least partially located outside the housing and movable to extend into one of the brake grooves, locks the movement of the transmission assembly.

2. The endoscope operation section according to claim 1, characterized by The locking structure includes a pressing member rotatably disposed on the housing. When the pressing member rotates in a first direction, the locking structure extends into one of the braking grooves. When the pressing member rotates in a second direction, the locking structure exits the braking grooves.

3. The endoscope operation section according to claim 2, characterized by The locking structure also includes a fixing seat; The housing is provided with a fixing groove and a sliding groove that communicates with the fixing groove and the inner cavity; The fixing seat is fixed in the fixing groove, and the fixing seat has a pressing cavity that communicates with the sliding groove; The pressing element is rotatably disposed within the pressing cavity.

4. The endoscope operation section according to claim 3, characterized by The fixing seat has an inner wall surface located inside the pressing cavity and facing it. The pressing member has an outer wall surface facing the inner wall surface of the fixing seat. On the inner wall surface of the fixing seat and the outer wall surface of the pressing member, one of them is provided with at least one limiting protrusion, and the other is provided with at least one limiting groove or limiting hole. When the locking structure extends into at least one of the braking grooves, the limiting protrusion is engaged with the limiting groove or the limiting hole to restrict the rotation of the pressing member.

5. The endoscope operation section according to claim 4, characterized by On the inner or outer wall surface where the limiting groove or the limiting hole is located, a sliding groove is formed that communicates with the limiting groove or the limiting hole. When the pressing member rotates, the limiting protrusion slides into or out of the limiting groove or the limiting hole along the sliding groove.

6. The endoscope operation section according to claim 4, characterized by The inner wall surface of the fixed base has a rotating groove or rotating hole that is oppositely arranged on the first and second surfaces. The pressing member is symmetrically provided with rotating shafts on the outer wall surface, and the rotating shafts extend into the rotating grooves or rotating holes that are directly opposite each other.

7. The endoscope operation section according to claim 2, characterized by The locking structure also includes a locking component, one end of which is disposed on the pressing member, and the other end is provided with a ball bearing, which slides or rolls to extend into or retract from the braking groove.

8. The endoscope operating unit according to claim 7, characterized in that, The brake groove has an inclined surface or an arc surface, and the ball slides or rolls along the inclined surface or arc surface when it extends into or exits the brake groove.

9. The endoscope operation section according to claim 7, characterized by The inner wall of the brake groove is spherical.

10. The endoscope operation section according to claim 7, characterized by The locking assembly also includes a fixing element and an elastic element; One end of the fixing member is provided on the pressing member, and the other end has a fixing cavity, and the elastic member is provided in the fixing cavity; The ball bearing is located at the end of the elastic element away from the pressing element.

11. An endoscope characterized by comprising: Includes the endoscope operating unit as described in any one of claims 1-9.

Images