Knob braking device for endoscope, handle for endoscope and endoscope

Abstract

The knob braking device for an endoscope, the handle for an endoscope, and the endoscope. The knob braking device for an endoscope (100) includes a fixed frame (110), a braking member (120), and a braking button (130). The fixed frame (110) is provided with an actuation cavity (111) through which a knob device (300) is inserted, and the fixed frame (110) is provided with at least two slide grooves (112) spaced apart from each other around the actuation cavity (111). Each braking member (120) is provided with a one-to-one correspondence with each slide groove (112). The brake member (130) is fitted to the outside of the fixed frame (110) and at least two push parts (133) are provided at intervals on the inner wall of the brake button (130). When the brake button (130) rotates to a preset angle, each push part (133) pushes each brake member (120) in a one-to-one correspondence to move it toward the operating cavity (111) and hugs the knob device (300). This knob brake device (100) has a simple structure, direct and effective transmission of braking force, and excellent braking effect. During assembly, it is only necessary to slidably install the brake member (120) in the slide groove (112), which simplifies the assembly process and is advantageous in improving assembly efficiency.

Description

[Technical field]

[0001] The present invention relates to the technical field of medical equipment, and in particular to a knob braking device for an endoscope, a handle for an endoscope, and an endoscope. [Background technology]

[0002] An endoscope is an inspection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software, etc. It has an image sensor, an optical lens, an illumination light source, a mechanical device, etc., and is an important auxiliary medical instrument for detecting pathological changes in the internal organs of the human body. It is widely used in various surgical operations. At present, most endoscope products are products that are used repeatedly and need to be disinfected through a strict disinfection process after each use. A conventional endoscope includes a handle, an insertion tube, a bending section, a tip section, and a main body. The handle contains structures such as function buttons, air and water supply valves, negative pressure valves, and three-way valves.

[0003] In order to expand the observation range, the knob device controls the bending part to bend in four directions, thereby realizing the observation of the endoscope in four directions. When it is necessary to obtain image information in a specific direction, the braking module locks the knob device to make the bending part maintain a specific bending angle. A conventional braking module usually includes a lever part and a damping sheet, the lever part is provided with a connecting column, and the damping sheet is provided with an arch groove. When the lever part rotates, the connecting column is driven to slide and move in the arch groove from one end farthest from the axis of the guide rail member in the initial state of the arch groove to one end closest to the axis of the guide rail member in the initial state of the arch groove, and the damping sheets are driven to approach each other, and the knob device is clamped to realize braking. However, such a braking form has a complicated structure design, is expensive, and is inconvenient to assemble. In addition, during the braking process, the braking force is indirectly combined and transmitted by the connecting column and the arch groove, which causes poor braking effect. Summary of the Invention [Problem to be solved by the invention]

[0004] Based on this, it is necessary to provide an endoscope knob braking device, an endoscope handle, and an endoscope that have a simple structure design, are convenient to assemble, and have excellent braking effect. [Means for solving the problem]

[0005] The knob braking device for an endoscope includes a fixed frame, a braking member, and a braking button, the fixed frame is provided with an operating cavity, the operating cavity is used for inserting a knob device, the fixed frame is provided with at least two sliding grooves spaced apart around the operating cavity, one end of each sliding groove is connected to the operating cavity and the other end is used for connecting to the outside of the fixed frame, there are at least two braking members, each of which is slidably mounted in each of the sliding grooves in a one-to-one correspondence, the braking members extend to the outside of the fixed frame through the sliding groove, the braking button is externally fitted to the fixed frame, and at least two pushing portions are provided on an inner wall of the braking button at intervals, and when the braking button rotates to a preset angle, each of the pushing portions pushes each of the braking members in a one-to-one correspondence to move them toward the operating cavity and embrace the knob device.

[0006] The above-mentioned endoscope knob braking device has braking members slidably arranged in the slide grooves in a one-to-one correspondence, and ensures that the braking members extend through the slide grooves to the outside of the fixed frame. When the braking button fitted on the outside of the fixed frame rotates to a preset angle, the pushing part on its inner wall contacts the braking members and pushes the braking members to move into the slide grooves. Since the slide grooves communicate with the working cavities, the braking members are respectively inserted into the working cavities by the pushing part, and finally embrace the knob device to realize the braking of the knob device. In this way, the cooperative structure between the braking members and the braking buttons directly drives the braking members to move into the slide grooves during the braking process, thereby realizing the braking of the knob device, and the structural design is clever and simple, and the transmission of the braking force is direct and effective, ensuring a better braking effect of the knob. In addition, since the braking members only need to be slidably arranged in the slide grooves during assembly, the assembly process can be simplified, which is favorable for improving the assembly efficiency.

[0007] In one embodiment, the slide groove includes a first groove section, a second groove section and a third groove section which are connected in sequence, the first groove section is connected to the operating cavity and the third groove section is used to connect to the outside of the fixed frame, the braking member is slidably mounted in the second groove section, and one end of the braking member extends into the first groove section and the other end extends to the outside of the fixed frame through the third groove section.

[0008] In one embodiment, the braking member includes a main body portion, and a clamping portion and a transmission portion respectively provided at opposite ends of the main body portion, the clamping portion being located within the first groove section, the transmission portion being located within the third groove section and partially extending outside the fixed frame, and having position limiting walls both between the first groove section and the second groove section and between the second groove section and the third groove section, the main body portion being slidably mounted within the second groove section and being positionally limited and fitted into the position limiting wall between the first groove section and the second groove section and the position limiting wall between the second groove section and the third groove section, respectively.

[0009] In one embodiment, the width W of the first groove section 1 and the width W of the third groove section 3 are the width W of the second groove section 2 The first groove section and the third groove section are each formed with the position limiting wall between the second groove section and the first groove section, and the width W 4 and the width W of the transmission part 6 are the width W of the main body part. 5 Less than.

[0010] In one embodiment, the brake button includes a button body and a ring sleeve provided on the button body, the ring sleeve is fitted onto the fixed frame, and the pushing portion is provided on an inner wall of the ring sleeve.

[0011] In one embodiment, the pushing portion is formed by an inner wall of the ring sleeve protruding toward the center of the ring sleeve.

[0012] In one embodiment, the brake button is provided with a toggle portion that protrudes and extends radially of the brake button, or the brake button is provided with a toggle portion that protrudes and extends in a direction away from the fixed frame.

[0013] In one embodiment, the fixed frame is provided with a first positioning portion configured to position and mate with a second positioning portion on the knob device so as to limit rotation of the fixed frame associated with the knob device.

[0014] In one embodiment, the first positioning portion is a positioning groove or a positioning protrusion in the fixed frame.

[0015] In one embodiment, the first positioning portion is a plurality of first positioning portions, the plurality of first positioning portions being arranged at intervals around the working cavity.

[0016] In one embodiment, the brake button is provided with an arched groove, the arched groove is provided surrounding the actuation cavity, and the arched groove is configured to fit with a position limiting post in the casing so as to limit the rotation range of the brake button; or the inner wall of the brake button is provided with a first position limiting block, and the outer wall of the fixed frame is provided with a second position limiting block, and the first position limiting block cooperates with the second position limiting block to limit the rotation range of the brake button.

[0017] The endoscopic handle includes a knob device and two endoscopic knob braking devices described in any one of the above, the knob device including a casing, a first wire pulling wheel, a second wire pulling wheel, a first knob and a second knob, the first wire pulling wheel extends outside the casing and is connected to the first knob, the second wire pulling wheel extends outside the casing through the first wire pulling wheel and is connected to the second knob, one of the endoscopic knob braking devices is used to brake the first knob or the first wire pulling wheel, and the other of the endoscopic knob braking devices is used to brake the second knob or the second wire pulling wheel.

[0018] The above-mentioned endoscopic handle adopts the above-mentioned endoscopic knob braking device, and the braking members are slidably arranged in the slide groove in one-to-one correspondence, and ensure that the braking members extend out of the fixed frame through the slide groove. When the braking button fitted on the fixed frame rotates to a preset angle, the pushing part on its inner wall contacts the braking members and pushes the braking members to move into the slide groove. Because the slide groove communicates with the working cavity, each braking member is pushed by the pushing part to insert into the working cavity respectively, and finally hugs the knob device to realize the braking of the knob device. In this way, the cooperative structure between the braking members and the braking buttons directly drives the braking members to move into the slide groove during the braking process, thereby realizing the braking of the knob device, and its structural design is clever and simple, and the transmission of the braking force is direct and effective, which ensures that the braking effect of the knob is better. Furthermore, since it is only necessary to provide the braking member slidably in the slide groove during assembly, the assembly process can be simplified, which is advantageous in improving assembly efficiency.

[0019] The endoscope includes the above-mentioned endoscope handle. Effect of the Invention

[0020] The above-mentioned endoscope adopts the above-mentioned endoscope handle, and the braking members are slidably arranged in the slide groove in one-to-one correspondence, and ensure that the braking members extend through the slide groove to the outside of the fixed frame. When the braking button fitted on the outside of the fixed frame rotates to a preset angle, the pushing part on its inner wall contacts the braking members and pushes the braking members to move into the slide groove. Because the slide groove communicates with the working cavity, each braking member is pushed by the pushing part to insert into the working cavity respectively, and finally hugs the knob device to realize the braking of the knob device. In this way, the cooperative structure between the braking members and the braking buttons directly drives the braking members to move into the slide groove during the braking process, thereby realizing the braking of the knob device, which ensures that the structural design is clever and simple, the transmission of the braking force is direct and effective, and the braking effect of the knob is better. Furthermore, since it is only necessary to provide the braking member slidably in the slide groove during assembly, the assembly process can be simplified, which is advantageous in improving assembly efficiency.

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention, and the schematic embodiments of the present invention and their explanations are used to interpret the present invention and do not constitute undue limitations on the present invention. In order to more clearly describe the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings from these drawings without creative labor. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is an exploded view of an endoscope knob braking device according to one embodiment at one viewing angle. [Diagram 2] FIG. 13 is an exploded view of the knob braking device for an endoscope according to one embodiment at another viewing angle. [Diagram 3] FIG. 2 is a structural schematic diagram of a fixing frame according to an embodiment. [Figure 4]FIG. 2 is a schematic diagram showing the structure of a braking member according to an embodiment. [Diagram 5] FIG. 11 is an exploded view of an endoscope knob braking device according to another embodiment at one viewing angle. [Figure 6] FIG. 13 is an exploded view of an endoscope knob braking device according to another embodiment, taken at another viewing angle. [Figure 7] FIG. 11 is a structural schematic diagram of a fixing frame according to another embodiment. [Figure 8] FIG. 11 is a structural schematic diagram of a braking member according to another embodiment. [Figure 9] FIG. 2 is an exploded schematic view of an endoscope knob braking device according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] In order to more clearly understand the above objects, features and advantages of the present invention, the following detailed description of specific embodiments of the present invention will be given with reference to the drawings. In the following description, many specific details are described in order to fully understand the present invention. However, the present invention can be embodied in many other forms different from the embodiments described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific examples disclosed below.

[0024] 1 and 6, in one embodiment, the knob braking device 100 for an endoscope includes a fixed frame 110, a braking member 120, and a braking button 130. The fixed frame 110 is provided with an actuation cavity 111. The actuation cavity 111 is used for inserting the knob device 300. The fixed frame 110 is provided with at least two slide grooves 112 spaced apart from each other around the actuation cavity 111. Each slide groove 112 is used for communicating with the actuation cavity 111 at one end and communicating with the outside of the fixed frame 110 at the other end. There are at least two braking members 120, and each braking member 120 is slidably mounted in each slide groove 112 in one-to-one correspondence, and the braking members 120 extend to the outside of the fixed frame 110 through the slide groove 112. The brake button 130 is fitted onto the fixed frame 110, and at least two pushing portions 133 are provided at intervals on the inner wall of the brake button 130. When the brake button 130 rotates to a preset angle, each pushing portion 133 corresponds to each other and pushes each brake member 120 to move it toward the operating cavity 111, thereby embracing the knob device 300.

[0025] The above-mentioned endoscopic knob braking device 100 and braking members 120 are slidably arranged in the slide groove 112 in one-to-one correspondence, and the braking members 120 are ensured to extend through the slide groove 112 to the outside of the fixed frame 110. When the braking button 130 fitted on the fixed frame 110 rotates to a preset angle, the pushing part 133 on its inner wall contacts the braking member 120 and pushes the braking member 120 to move into the slide groove 112. Since the slide groove 112 communicates with the operating cavity 111, each braking member 120 is pushed by the pushing part 133 and inserted into the operating cavity 111, and finally hugs the knob device 300 to realize braking of the knob device 300. In this way, the cooperative structure between the braking member 120 and the braking button 130 directly drives the braking member 120 to move into the sliding groove 112 during the braking process, thereby realizing the braking of the knob device 300, the structural design is clever and simple, the transmission of the braking force is direct and effective, and it ensures that the braking effect of the knob is better. In addition, since it is only necessary to slidably install the braking member 120 in the sliding groove 112 during assembly, the assembly process can be simplified, which is favorable for improving the assembly efficiency.

[0026] It should be noted that the "preset angle" should be understood as follows: When the knob device 300 needs to be braked, the brake button 130 rotates a certain angle clockwise or counterclockwise around the rotation axis, and then the pushing part 133 of the brake button 130 pushes the brake member 120 to move it into the slide groove 112 and into the operating cavity 111. This angle can take any angle value between 0° (excluding 0°) and 360° (excluding 360°).

[0027] Furthermore, when the knob device 300 is inserted into the operating cavity 111, the knob device 300 may or may not penetrate the brake button 130, that is, the brake button 130 is covered by the knob device 300. In addition, when at least two brake members 120 embrace the knob device 300, one end of the brake member 120 should be designed to match the outer contour of the knob device 300 to restrict the knob device 300 from continuing to rotate. Of course, in order to improve the effect of the embrace, an anti-slip structure may be provided on one end of the brake member 120, for example, anti-slip teeth, anti-slip patterns, anti-slip damping layers, etc. may be added.

[0028] 3, the slide groove 112 includes a first groove section 1121, a second groove section 1122, and a third groove section 1123, which are connected in sequence. The first groove section 1121 is connected to the working cavity 111. The third groove section 1123 is used to connect to the outside of the fixed frame 110, and the brake member 120 is slidably mounted in the second groove section 1122, and the brake member 120 has one end extending into the first groove section 1121 and the other end extending out of the fixed frame 110 through the third groove section 1123. In this embodiment, the slide groove 112 is designed in a three-stage configuration, so that before braking, one end of the braking member 120 extends out of the fixed frame 110 through the third groove section 1123, and during braking, the other end of the braking member 120 is inserted into the operating cavity 111 through the first groove section 1121 under the action of the pushing portion 133, thereby embracing the knob device 300.

[0029] 3, the braking member 120 includes a main body 121, and a clamping portion 122 and a transmission portion 123 provided at both opposing ends of the main body 121. The clamping portion 122 is located in the first groove section 1121. The transmission portion 123 is located in the third groove section 1123, and a portion of the transmission portion 123 extends outside the fixed frame 110. Between the first groove section 1121 and the second groove section 1122, and between the second groove section 1122 and the third groove section 1123, there are position limiting walls 1124. The main body 121 is slidably mounted in the second groove section 1122, and is fitted in a position limiting manner to the position limiting wall 1124 between the first groove section 1121 and the second groove section 1122, and the position limiting wall 1124 between the second groove section 1122 and the third groove section 1123, respectively. During position restriction and engagement, when the main body 121 engages with the position limiting wall 1124 of the adjacent third groove section 1123, a part of the transmission part 123 extends outside the fixed frame 110 through the third groove section 1123. When the main body 121 engages with the position limiting wall 1124 of the adjacent first groove section 1121, the embracing part 122 is inserted into the working cavity 111 through the first groove section 1121. In this way, the position limiting wall 1124 between the first groove section 1121 and the second groove section 1122 and the position limiting wall 1124 between the second groove section 1122 and the third groove section 1123 limit the movement stroke of the main body 121 in the second groove section 1122, and prevent the braking member 120 from sliding out of the slide groove 112 and causing the endoscope knob braking device 100 to malfunction, on the premise of realizing effective braking.

[0030] Optionally, the connection form of the clamping part 122 and the transmission part 123 with the main body part 121 may be, but is not limited to, a bolt connection, a threaded sleeve connection, a fastening, a welding, a rivet connection, a pin connection, an integral molding method, etc. Here, the integral molding method should be understood as injection molding, extrusion molding, die casting, etc.

[0031] Specifically, referring to Figures 4 and 8, the transmission part 123, the main body part 121 and the clamping part 122 are of an integrated structure, which is not only advantageous in simplifying the manufacturing process but also advantageous in ensuring the structural stability of the braking member 120.

[0032] Of course, when the braking member 120 is an integral structure, its external design can have various options, such as a chevron shape, etc., which is not particularly limited in this embodiment.

[0033] In one embodiment, referring to FIG. 3, the width W of the first groove section 1121 1 and the width W of the third groove section 1123 3 are the width W of the second groove section 1122. 2 Therefore, the position limiting wall 1124 is formed between the first groove section 1121 and the third groove section 1123 and the second groove section 1122. 4 and the width W of the transmission part 123 6 are the width W of the main body 121. 5 Therefore, during the braking process, the position limiting walls 1124 are formed on both sides due to the difference in width between the second groove section 1122 and each of the first groove section 1121 and the third groove section 1123, which limits the body part 121 to move back and forth within the second groove section 1122, ensuring that the braking structure is more stable.

[0034] The first groove section 1121 is provided in the middle of the second groove section 1122, and two position limiting walls 1124 can be formed due to the difference in width between the first groove section 1121 and the second groove section 1122. Of course, even if the first groove section 1121 is not provided in the middle of the second groove section 1122, one position limiting wall 1124 can be formed. Similarly, the third groove section 1123 is provided in the middle of the second groove section 1122, and two position limiting walls 1124 can be formed due to the difference in width between the third groove section 1123 and the second groove section 1122. Of course, even if the third groove section 1123 is not provided in the middle of the second groove section 1122, one position limiting wall 1124 can be formed.

[0035] 1 and 5, in one embodiment, the brake button 130 includes a button body 131 and a ring sleeve 132 provided on the button body 131. The ring sleeve 132 is fitted onto the fixed frame 110, and the pushing portion 133 is provided on the inner wall of the ring sleeve 132. In this manner, when the ring sleeve 132 is driven to rotate out of the fixed frame 110, the pushing portion 133 on the inner wall comes into contact with the extending portion of the brake member 120, and drives the brake member 120 to move.

[0036] Optionally, the connection form of the pushing portion 133 with the ring sleeve 132 may be, but is not limited to, a bolt connection, a threaded sleeve connection, a fastening, a welding, a rivet connection, a pin connection, an integral molding method, and the like.

[0037] In addition, the button body 131 may be provided with a through hole through which the knob device 300 is drilled, which facilitates assembly.

[0038] Further, referring to FIG. 1 and FIG. 5, the pushing portion 133 is formed by the inner wall of the ring sleeve 132 protruding toward the center of the ring sleeve 132, that is, the pushing portion 133 and the ring sleeve 132 are an integral structure, thus making the manufacture thereof more convenient.

[0039] 1 and 5, there are three pushing portions 133, three braking members 120, and three slide grooves 112. The three slide grooves 112 are provided at intervals along the circumferential direction of the operating cavity 111. The three pushing portions 133 are provided at intervals along the circumferential direction of the ring sleeve 132.

[0040] 2 and 6, in one embodiment, the brake button 130 is provided with a toggle portion 134. The toggle portion 134 protrudes and extends along the radial direction of the brake button 130, or the toggle portion 134 protrudes and extends along the direction away from the fixed frame 110. Thus, in this embodiment, two different structures of the toggle portion 134 are provided, and by designing the different toggle portions 134, it is convenient for the operator to drive and rotate the brake button 130, and the operability of the product is improved.

[0041] 2 and 7, in one embodiment, the fixed frame 110 is provided with a first positioning portion 113. The first positioning portion 113 is configured to be positioned and engaged with the second positioning portion 220 of the knob device 300 so as to limit rotation of the fixed frame 110 associated with the knob device 300. In this manner, engagement of the first positioning portion 113 with the second positioning portion 220 brings the fixed frame 110 into a relatively fixed state, and the brake member 120 embraces the knob device 300.

[0042] Alternatively, the first positioning portion 113 is a convex structure and the second positioning portion 220 is a hole or groove structure, or the first positioning portion 113 is a hole or groove structure and the second positioning portion 220 is a convex structure.

[0043] Further, referring to FIG. 2 and FIG. 7, the first positioning portion 113 is a positioning groove 1131 or a positioning protrusion 1132 in the fixed frame 110 .

[0044] 9, the first positioning portion 113 in one fixed frame 110 is a positioning groove 1131, which is positioned and fitted into the second positioning portion 220 in the casing 200. The second positioning portion 220 in the other fixed frame 110 is a positioning protrusion 1132, which is positioned and fitted into the second positioning portion 220 in the wire pulling wheel holder 500.

[0045] 2 and 7, there are a plurality of first positioning portions 113. The plurality of first positioning portions 113 are arranged at intervals around the operating cavity 111. In this manner, the engagement between the plurality of first positioning portions 113 and the plurality of second positioning portions 220 provides a better effect of restricting the rotation of the fixed frame 110.

[0046] 2 and 5, in one embodiment, the brake button 130 is provided with an arch groove 135. The arch groove 135 is provided around the operating cavity 111, and the arch groove 135 is configured to fit with the position limiting post 210 in the casing 200 so as to limit the rotation range of the brake button 130; alternatively, the inner wall of the brake button 130 is provided with a first position limiting block 136, and the outer wall of the fixed frame 110 is provided with a second position limiting block 114, and the first position limiting block 136 cooperates with the second position limiting block 114 to limit the rotation range of the brake button 130. In this way, the arch groove 135 or the first position limiting block 136 effectively limits the rotation range of the brake button 130, and avoids excessive rotation causing loss of structural stability.

[0047] In one embodiment, referring to FIG. 9, an endoscopic handle includes a knob device 300 and two or more endoscopic knob braking devices 100 in any embodiment. The knob device 300 includes a casing 200, a first wire pulling wheel 310, a second wire pulling wheel 320, a first knob 410, and a second knob 420. The first wire pulling wheel 310 extends outside the casing 200 and is connected to the first knob 410. The second wire pulling wheel 320 extends outside the casing 200 through the first wire pulling wheel 310 and is connected to the second knob 420. One endoscopic knob braking device 100 is used to brake the first knob 410, and the other endoscopic knob braking device 100 is used to brake the second knob 420.

[0048] The above-mentioned endoscopic handle adopts the above-mentioned endoscopic knob braking device 100, and the braking members 120 are slidably arranged in the slide grooves 112 in one-to-one correspondence, and ensure that the braking members 120 extend through the slide grooves 112 to the outside of the fixed frame 110. When the braking button 130 fitted on the fixed frame 110 rotates to a preset angle, the pushing part 133 on its inner wall contacts the braking members 120 and pushes the braking members 120 to move into the slide grooves 112. Since the slide grooves 112 communicate with the operating cavities 111, the braking members 120 are pushed by the pushing parts 133 and inserted into the operating cavities 111, respectively, and finally hug the knob device 300 to realize the braking of the knob device 300. In this way, the cooperative structure between the braking member 120 and the braking button 130 directly drives the braking member 120 to move into the sliding groove 112 during the braking process, thereby realizing the braking of the knob device 300, the structural design is clever and simple, the transmission of the braking force is direct and effective, and it ensures that the braking effect of the knob is better. In addition, the assembly process can be simplified by simply slidably installing the braking member 120 in the sliding groove 112 during assembly, which is favorable for improving the assembly efficiency.

[0049] Furthermore, the knob device 300 further includes a first wire pulling wheel holder 510 and a second wire pulling wheel holder 520. The first wire pulling wheel holder 510 is fitted onto the second wire pulling wheel 320 and covers the first wire pulling wheel 310. The second wire pulling wheel holder 520 covers the second wire pulling wheel 320 and extends outside the casing 200 through the second wire pulling wheel 320.

[0050] In one embodiment, referring to FIG. 9, an endoscope features an endoscope handle as in any of the above embodiments.

[0051] The above-mentioned endoscope adopts the above-mentioned endoscope handle, and the braking members 120 are slidably arranged in the slide grooves 112 in a one-to-one correspondence, and ensure that the braking members 120 extend through the slide grooves 112 to the outside of the fixed frame 110. When the braking button 130 fitted on the fixed frame 110 rotates to a preset angle, the pushing part 133 on its inner wall contacts the braking members 120 and pushes the braking members 120 to move into the slide grooves 112. Since the slide grooves 112 communicate with the operating cavities 111, the braking members 120 are pushed by the pushing parts 133 and inserted into the operating cavities 111, respectively, and finally hug the knob device 300 to realize the braking of the knob device 300. In this way, the cooperative structure between the braking member 120 and the braking button 130 directly drives the braking member 120 to move into the sliding groove 112 during the braking process, thereby realizing the braking of the knob device 300, the structural design is clever and simple, the transmission of the braking force is direct and effective, and it ensures that the braking effect of the knob is better. In addition, the assembly process can be simplified by simply slidably installing the braking member 120 in the sliding groove 112 during assembly, which is favorable for improving the assembly efficiency.

[0052] The technical features of the embodiments described above can be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features in the embodiments described above have been described; however, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope described in this specification.

[0053] The above examples merely show some embodiments of the present application, and although the description is specific and detailed, it should not be understood as limiting the scope of the present invention. It should be noted that those skilled in the art can make some modifications and improvements that fall within the scope of the present application without departing from the idea of ​​the present application. Therefore, the scope of the patent of the present application shall be subject to the scope of the attached claims.

[0054] In describing the present invention, it should be understood that the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are based on the orientations or positional relationships shown in the drawings, and are intended only to facilitate and simplify the description of the present invention, and do not imply or suggest that the devices or elements referred to necessarily have a specific orientation or must be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.

[0055] It should be noted that the terms "first" and "second" are for descriptive purposes only and are not to be understood as implying or suggesting the relative importance or number of the technical features described. Thus, a feature qualified with "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, unless otherwise expressly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0056] In the present invention, unless otherwise clearly defined and limited, the terms "attached", "coupled", "connected", "fixed" and the like should be understood in a broad sense, and may mean, for example, a fixed connection, a detachable connection, or an integral connection. They may also be mechanically connected or electrically connected. They may also be directly connected, indirectly connected via an intermediate medium, or may be internal communication between two elements or an interactive relationship between two elements. The specific meanings of the above terms in the present invention will be understood by those skilled in the art depending on the specific situation.

[0057] In the present invention, unless otherwise clearly defined and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Furthermore, a first feature being "above," "above," and "on the upper surface" of a second feature may simply indicate that the first feature is directly above or diagonally above the second feature, or that the horizontal height of the first feature is greater than that of the second feature. A first feature being "below," "below," and "on the lower surface" of a second feature may simply indicate that the first feature is directly below or diagonally below the second feature, or that the horizontal height of the first feature is smaller than that of the second feature.

[0058] It should be noted that when an element is referred to as "fixed" or "mounted" to another element, it may be directly connected to the other element, or there may be intervening elements. When an element is considered to be "connected" to another element, it may be directly connected to the other element, or there may be intervening elements. As used herein, the terms "vertical," "horizontal," "up," "down," "left," "right," and similar terms are for illustrative purposes only and do not refer to the only embodiment. [Explanation of symbols]

[0059] 100 knob braking device for endoscope, 110 fixed frame, 111 actuation cavity, 112 slide groove, 1121 first groove section, 1122 second groove section, 1123 third groove section, 1124 position limiting wall, 113 first positioning portion, 1131 positioning groove, 1132 positioning protrusion, 114 second position limiting block, 120 braking member, 121 main body, 122 embracing portion, 123 transmission portion, 130 braking button, 131 button body, 132 ring sleeve, 133 pushing portion, 134 toggle portion, 135 arch groove, 136 first position limiting block, 200 casing, 210 position limiting column, 220 second positioning portion, 300 knob device, 310 first wire pulling wheel, 320 second wire pulling wheel, 410 First knob, 420 Second knob, 500 Wire drawing wheel holder, 510 First wire drawing wheel holder, 520 Second wire drawing wheel holder

Claims

1. A knob braking device for an endoscope, comprising: The brake device includes a fixed frame, a brake member, and a brake button. The fixed frame is provided with an actuation cavity, the actuation cavity being used for inserting a knob device therethrough, and at least two slide grooves are provided around the actuation cavity in the fixed frame at intervals, each slide groove having one end communicating with the actuation cavity and the other end communicating with the outside of the fixed frame; There are at least two braking members, each of which is slidably mounted in each of the slide grooves in a one-to-one correspondence, and the braking members extend through the slide grooves to the outside of the fixed frame; The brake button is fitted to the fixed frame, and at least two pushing parts are provided on the inner wall of the brake button at an interval. When the brake button rotates to a preset angle, each pushing part pushes each of the brake members in a one-to-one correspondence to move them toward the operating cavity to hug the knob device; The slide groove includes a first groove section, a second groove section and a third groove section which are connected in sequence, the first groove section is connected to the working cavity, and the third groove section is used to connect to the outside of the fixed frame, the braking member is slidably mounted in the second groove section, and one end of the braking member extends into the first groove section and the other end extends to the outside of the fixed frame through the third groove section; a clamping portion and a transmission portion provided on each of opposing ends of the main body portion, the clamping portion being located within the first groove section, the transmission portion being located within the third groove section and partially extending outside the fixed frame, position limiting walls being present both between the first groove section and the second groove section and between the second groove section and the third groove section, the main body portion being slidably mounted within the second groove section and being fitted in a position limited manner by the position limiting wall between the first groove section and the second groove section and the position limiting wall between the second groove section and the third groove section,

2. The width W of the first groove section １ and the width W of the third groove section ３ are the width W of the second groove section ２ The first groove section and the third groove section are each formed with the position limiting wall between the first groove section and the second groove section, and the width W ４ and the width W of the transmission part ６ are the width W of the main body ５ 2. The knob braking device for an endoscope according to claim 1, wherein the knob braking device is smaller than the

3. 2. The knob braking device for an endoscope according to claim 1, wherein the braking button includes a button body and a ring sleeve provided on the button body, the ring sleeve is fitted onto the fixed frame, and the pushing portion is provided on an inner wall of the ring sleeve.

4. 4. The knob braking device for an endoscope according to claim 3, wherein the pushing portion is formed by a protrusion of an inner wall of the ring sleeve toward a center of the ring sleeve.

5. The brake button is provided with a toggle portion, the toggle portion protruding and extending radially of the brake button, or 2. The knob braking device for an endoscope according to claim 1, wherein the braking button is provided with a toggle portion, the toggle portion protruding and extending in a direction away from the fixed frame.

6. 2. The knob braking device for an endoscope according to claim 1, wherein the fixed frame is provided with a first positioning portion, the first positioning portion being configured to position and engage with a second positioning portion of the knob device so as to limit rotation of the fixed frame associated with the knob device.

7. 7. The knob braking device for an endoscope according to claim 6, wherein the first positioning portion is a positioning groove or a positioning protrusion in a fixed frame.

8. 7. The knob braking device for an endoscope according to claim 6, wherein the first positioning portion is provided in plurality, the plurality of first positioning portions being arranged at intervals around the working cavity.

9. the brake button is provided with an arcuate groove around the actuation cavity, the arcuate groove being adapted to mate with a position limiting post on a casing to limit the range of rotation of the brake button; or 2. The knob braking device for an endoscope according to claim 1, wherein a first position limiting block is provided on an inner wall of the brake button, and a second position limiting block is provided on an outer wall of the fixed frame, the first position limiting block cooperating with the second position limiting block to limit a rotation range of the brake button.

10. A handle for an endoscope, comprising:

10. An endoscopic handle comprising: a knob device; and two endoscopic knob braking devices according to any one of claims 1 to 9, wherein the knob device comprises a casing, a first wire pulling wheel, a second wire pulling wheel, a first knob, and a second knob, the first wire pulling wheel extends outside the casing and is connected to the first knob, and the second wire pulling wheel extends outside the casing through the first wire pulling wheel and is connected to the second knob, one of the endoscopic knob braking devices is used to brake the first knob or the first wire pulling wheel, and the other of the endoscopic knob braking devices is used to brake the second knob or the second wire pulling wheel.

11. An endoscope comprising an endoscope handle according to claim 10.

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