Endoscope and its traction mechanism and operating handle

Abstract

The present application belongs to the field of medical device technology, and specifically relates to an endoscope and its traction mechanism and operating handle. The traction mechanism is used to pull a traction rope, and the traction mechanism includes a traction wheel, a fixed seat and a winding piece. The traction wheel can rotate relative to the fixed seat, the fixed seat is used to connect with the proximal end of the traction rope, and the winding piece is used to wind the traction rope; the traction wheel is connected to the winding piece, and the winding piece can move in a direction close to or away from the fixed seat following the rotation of the traction wheel to adjust the tension of the traction rope; the winding piece can also move relative to the traction wheel in a direction close to or away from the rotation axis of the traction wheel. When using the traction mechanism of the present application, at the same rotation angle, the tension of the traction rope changes more, so that the target components such as the active bending section can quickly reach the target position. That is to say, the present application can reduce the angle of rotation of the traction wheel when the target component reaches the target position, thereby alleviating the fatigue of the operator's fingers.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to an endoscope and its traction mechanism and operating handle. Background Art

[0002] When diagnosing and treating lesions in the patient's body, an endoscope is usually required. The endoscope includes an operating handle and an insertion part. During specific operation, by controlling the operating handle, the insertion part at the front end of the insertion part can be pulled by a traction rope to achieve a bending action, thereby changing the direction of the distal end of the insertion part.

[0003] The current operating handle is equipped with a traction wheel, and the surgeon drives the traction wheel to rotate by turning the adjustment control on the operating handle, so as to pull the traction rope to achieve the bending action of the active bending section of the insertion part. However, in practice, the surgeon may need to control the adjustment control to make the traction wheel rotate greatly in order to bend the insertion part to the desired position, which can easily cause the surgeon's finger fatigue and is not conducive to the diagnosis and treatment of patients. Summary of the invention

[0004] The purpose of the present application is to provide an endoscope and its traction mechanism and operating handle, which can help solve the problem of finger fatigue easily caused by the surgeon when using the current operating handle.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application provides a traction mechanism of an endoscope, which is used for pulling a traction rope, and includes a traction wheel, a fixing seat and a winding member, wherein the traction wheel can rotate relative to the fixing seat, the fixing seat is used to connect with the proximal end of the traction rope, and the winding member is used to wind the traction rope;

[0007] The traction wheel is connected to the winding member, and the winding member can move in a direction close to or away from the fixed seat following the rotation of the traction wheel to adjust the tension of the traction rope;

[0008] The winding member can also move relative to the traction wheel in a direction close to or away from the rotation axis of the traction wheel.

[0009] Optionally, when the traction wheel rotates, the winding member can be close to the fixed seat and the rotation axis of the traction wheel at the same time, or the winding member can be away from the fixed seat and the rotation axis of the traction wheel at the same time.

[0010] Optionally, the fixed seat includes a fixing portion and a guiding portion, the fixing portion is used to be connected to the proximal end of the traction rope, and along the rotation direction of the traction wheel when the winding member moves away from the fixed seat, the distance between the guiding portion and the rotation axis of the traction wheel gradually increases, the winding member and the guiding portion are slidably matched, and when the traction wheel rotates, the traction wheel drives the winding member to slide.

[0011] Optionally, a through groove is provided on the traction wheel, the through groove extends from the inside to the outside, and the winding member is slidably matched with the through groove; or,

[0012] The winding member is located at one side of the traction wheel, and the traction wheel and the winding member are connected through a transmission mechanism. When the traction wheel rotates, the traction wheel drives the winding member to slide through the transmission mechanism.

[0013] Optionally, the mounting seat includes a base, the guide portion is a protruding structure, the fixing portion is connected to the base, the guide portion and the base are detachably connected, and the guide portion and the base are hinged via a rotating shaft.

[0014] Optionally, the hinge of the guide portion is located in the middle of its own extension direction.

[0015] Optionally, the traction mechanism further comprises a telescopic structure, two ends of which are respectively connected to the traction wheel and the winding member, and the telescopic structure can drive the winding member to move in a direction close to or away from the rotation axis of the traction wheel.

[0016] Optionally, the traction wheel is provided with a plurality of mounting portions spaced apart along its radial direction, and the winding member can be respectively mounted on each mounting portion.

[0017] In a second aspect, the present application provides an operating handle of an endoscope, comprising the above-mentioned traction mechanism.

[0018] In a third aspect, the present application provides an endoscope, comprising the above-mentioned operating handle.

[0019] The beneficial technical effects of this application are as follows:

[0020] In the present application, the fixed seat is relatively fixed, and the traction wheel can rotate relative to the fixed seat. When the traction mechanism of the present application is applied, the proximal end of the traction rope can be connected to the fixed seat, and then the distal end of the traction rope is wound around the winding member and connected to the target component such as the active bending segment. At this time, the two different rope segments on the traction rope are respectively arranged on both sides of the winding member. Since the traction wheel is connected to the winding member, the winding member can move in the direction of approaching or moving away from the fixed seat following the rotation of the traction wheel, thereby releasing or tensioning the two different rope segments of the traction rope at the same time. In this way, at the same rotation angle, the tension of the traction rope changes more greatly, so that the target component such as the active bending segment can quickly reach the target position. That is to say, the present application can reduce the angle of rotation of the traction wheel when the target component reaches the target position, thereby alleviating the finger fatigue of the operator and doctor, and facilitating the diagnosis and treatment of the patient.

[0021] In addition, the winding member of the present application can also move relative to the traction wheel in a direction close to or away from the rotation axis of the traction wheel, which can change the position of the winding member distributed on the periphery of the rotation axis of the traction wheel, thereby changing the rotation stroke of the winding member around the above-mentioned rotation axis when the traction wheel is at the same rotation angle, so that the stroke of the winding member close to or away from the fixed seat in this process can be adjusted, thereby adjusting the sensitivity of the traction mechanism to adjust the tension of the traction rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the endoscope disclosed in the embodiment of the present application;

[0023] Figure 2 A schematic diagram of a portion of the structure of the operating handle disclosed in the embodiment of the present application;

[0024] Figure 3 It is an exploded schematic diagram of the traction mechanism disclosed in the embodiment of the present application;

[0025] Figure 4 For this application Figure 3 The enlarged schematic diagram of point A in the middle;

[0026] Figure 5 An exploded schematic diagram of a partial structure of the traction mechanism disclosed in the embodiment of the present application Figure 1 ;

[0027] Figure 6 An exploded schematic diagram of a partial structure of the traction mechanism disclosed in the embodiment of the present application Figure 2 ;

[0028] Figure 7 An exploded schematic diagram of a winding component disclosed in an embodiment of the present application;

[0029] Figure 8 This is a schematic structural diagram of a traction mechanism disclosed in another embodiment of the present application;

[0030] Fig. 9 This is a structural schematic diagram of a traction mechanism disclosed in yet another embodiment of the present application;

[0031] Fig.10 For this application Fig. 9 The enlarged schematic diagram of point B in the middle;

[0032] Fig.11 This is a structural schematic diagram of a traction mechanism disclosed in yet another embodiment of the present application;

[0033] Fig.12 For this application Fig.11 Enlarged schematic diagram of point C in the middle.

[0034] Description of reference numerals:

[0035] 100, traction wheel; 101, through groove; 110, wheel body; 111, mounting part; 112, mounting groove; 120, cover plate; 200, fixing seat; 210, fixing part; 220, guide part; 230, base; 300, winding member; 301, wire bundle space; 310, winding wheel; 320, slide seat; 330, stop plate; 340, bearing plate; 400, telescopic structure; 410, screw rod; 501, constraint channel; 510, elastic member; 520, constraint member; 530, traction rope; 540, transmission mechanism; 600, operating handle; 700, insertion part. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] 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.

[0038] The endoscope and its traction mechanism and operating handle provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

[0039] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0040] like Figures 3 to 12As shown, the embodiment of the present application discloses a traction mechanism of an endoscope, which is used for pulling a traction rope 530, and includes a traction wheel 100, a fixing seat 200 and a winding member 300, and the traction wheel 100 can rotate relative to the fixing seat 200. Exemplarily, the fixing seat 200 here can be a part of the operating handle 600 of the endoscope, which can be integrally formed on the outer shell of the operating handle 600; or, the fixing seat 200 here can also be set independently of the outer shell of the operating handle 600, and in this case, the fixing seat 200 can be connected to the operating handle 600 by a connection structure such as a bolt, a clamping structure, and an adhesive layer.

[0041] The fixing seat 200 is used to connect with the proximal end of the traction rope 530, and the winding member 300 is used to wind the traction rope 530. Here, the part of the traction rope 530 wound on the winding member 300 is located between the proximal end and the distal end of the traction rope 530. In this way, when the winding member 300 moves, it can simultaneously release or tension the different rope segments of the traction rope 530 located on both sides of the winding member 300. Exemplarily, the wrapping angle of the traction rope 530 wound on the winding member 300 can be less than 90 degrees, or equal to 90 degrees, or greater than 90 degrees, and this application does not limit this. Specifically, the proximal end of the traction rope 530 is connected to the fixing seat 200, and the distal end of the traction rope 530 is connected to the target component such as the active bending segment after being wound around the winding member 300.

[0042] The traction wheel 100 is connected to the winding member 300 , and the winding member 300 can move in a direction close to or away from the fixing seat 200 following the rotation of the traction wheel 100 . The movement here can be movement or rotation to adjust the tension of the traction rope 530 .

[0043] Specifically, the fixed seat 200 here is relatively fixed, and the traction wheel 100 can rotate relative to the fixed seat 200. When the traction mechanism of the present application is applied, the proximal end of the traction rope 530 can be connected to the fixed seat 200, and then the distal end of the traction rope 530 is wound around the winding member 300 and connected to the target component such as the active bending segment. At this time, two different rope segments on the traction rope 530 are respectively arranged on both sides of the winding member 300. Since the traction wheel 100 is connected to the winding member 300, the winding member 300 can follow the rotation of the traction wheel 100 and move in a direction close to or away from the fixed seat 200, thereby releasing or tensioning the two different rope segments of the traction rope 530 at the same time. In this way, at the same rotation angle, the tension of the traction rope 530 changes more greatly, so that the target component such as the active bending segment can quickly reach the target position. That is to say, the present application can reduce the rotation angle of the traction wheel 100 when the target component reaches the target position, thereby alleviating the finger fatigue of the operator and doctor, and facilitating the diagnosis and treatment of the patient.

[0044] The winding member 300 can also move relative to the traction wheel 100 in a direction close to or away from the rotation axis of the traction wheel 100, and the movement here can also be movement or rotation.

[0045] The winding member 300 of the present application can also move relative to the traction wheel 100 in a direction close to or away from the rotation axis of the traction wheel 100, which can change the position of the winding member 300 distributed on the periphery of the rotation axis of the traction wheel 100, so as to change the rotation stroke of the winding member 300 around the above-mentioned rotation axis when the traction wheel 100 is at the same rotation angle, so that the stroke of the winding member 300 close to or away from the fixed seat 200 in this process can be adjusted, thereby adjusting the sensitivity of the traction mechanism, and further adjusting the sensitivity of the traction mechanism in adjusting the tension of the traction rope 530.

[0046] When the target component is an active bending segment, generally speaking, the active bending segment has a bidirectional bending function. At this time, the traction rope 530 includes a first rope segment and a second rope segment. When one of the first rope segment and the second rope segment is in a tensioned state, the other is in a relaxed state. In order to enable the traction mechanism of the present application to adapt to the bidirectional bending of the active bending segment, the number of winding members 300 can be set to two, and the first rope segment and the second rope segment are respectively wound on two winding members 300. In this case, the first rope segment and the second rope segment can be two independent ropes, respectively, and the proximal end of the traction rope 530 is the proximal end of the first rope segment and the proximal end of the second rope segment; or, the first rope segment and the second rope segment can be two different segments on a rope, and the first rope segment and the second rope segment are arranged in parallel, and the proximal ends of the two are connected, and the proximal end of the traction rope 530 is also the proximal end of the first rope segment and the proximal end of the second rope segment. Of course, the number of winding members 300 can also be set to one, and the present application does not limit the number of winding members 300.

[0047] In an alternative embodiment, see Figures 3 to 8 When the traction wheel 100 rotates, the winding member 300 can approach the rotation axis of the fixed seat 200 and the traction wheel 100 at the same time, or the winding member 300 can be away from the rotation axis of the fixed seat 200 and the traction wheel 100 at the same time. In other words, the winding member 300 can follow the rotation of the traction wheel 100 and approach the rotation axis of the fixed seat 200 and the traction wheel 100 at the same time, or be away from the rotation axis of the fixed seat 200 and the traction wheel 100 at the same time.

[0048] In this embodiment, the traction wheel 100 is connected to the winding member 300, and the winding member 300 can move with the rotation of the traction wheel 100, so that the winding member 300 is close to the fixed seat 200 or the rotation axis of the traction wheel 100 at the same time. During this process, the winding member 300 gradually releases the traction rope 530, and the distance between the winding member 300 and the rotation axis of the traction wheel 100 gradually decreases. The sensitivity of the traction mechanism to adjust the tension of the traction rope 530 gradually decreases, and the tension of the traction rope 530 changes relatively little when the traction wheel 100 rotates at the same angle.

[0049] Alternatively, the winding member 300 can move along with the rotation of the traction wheel 100, so that the winding member 300 is away from the rotation axis of the fixed seat 200 and the traction wheel 100 at the same time. In this process, the winding member 300 gradually tightens the traction rope 530, and the distance between the winding member 300 and the rotation axis of the traction wheel 100 gradually increases, and the sensitivity of the traction mechanism to adjust the tension of the traction rope 530 gradually increases. When the traction wheel 100 rotates at the same angle, the tension of the traction rope 530 changes relatively greatly. It can be seen that in this embodiment, the sensitivity of the traction mechanism can be adjusted by rotating the traction wheel 100, and there is no need to additionally adjust the sensitivity of the traction mechanism before rotating the traction wheel 100, thereby simplifying the operation process of the traction mechanism.

[0050] In an alternative embodiment, see Figure 5 and Figure 8 The fixing seat 200 includes a fixing portion 210 and a guiding portion 220. The fixing portion 210 is used to connect with the proximal end of the traction rope 530, and is arranged along the rotation direction of the traction wheel 100 when the winding member 300 is away from the fixing seat 200 ( Figure 5 In the clockwise direction in the figure, the distance between the guide portion 220 and the rotation axis of the traction wheel 100 gradually increases, and the winding member 300 and the guide portion 220 are slidably matched. When the traction wheel 100 rotates, the traction wheel 100 drives the winding member 300 to slide.

[0051] This embodiment uses Figure 5 Take the perspective shown as an example for explanation. Figure 5The dotted line in is the rotation axis of the traction wheel 100. The fixed seat 200 includes a guide portion 220. In the clockwise direction, the distance between the guide portion 220 and the rotation axis of the traction wheel 100 gradually increases. The guide portion 220 here has a first end and a second end. The distance between the first end and the rotation axis is smaller, and the distance between the second end and the rotation axis is larger. When the traction wheel 100 rotates in the clockwise direction, the winding member 300 will gradually approach the second end of the guide portion 220 and gradually move away from the fixed portion 210; when the traction wheel 100 rotates in the counterclockwise direction, the winding member 300 will gradually approach the first end of the guide portion 220 and gradually approach the fixed portion 210. It can be seen that the present embodiment uses the guide portion 220 to make the movable path of the winding member 300 constant, so that it is easier to achieve the expected tensioning effect.

[0052] Furthermore, along the rotation direction of the traction wheel 100 when the winding member 300 is away from the fixing seat 200 , the fixing portion 210 and the guiding portion 220 are spaced apart, and the first end of the guiding portion 220 is closer to the fixing portion 210 than the second end.

[0053] It should be noted that the guide portion 220 here can be a guide rail or a guide groove, and the present application does not limit this.

[0054] In some embodiments, see Figure 3 and Figure 6 The traction wheel 100 includes a wheel body 110 and a cover plate 120. The wheel body 110 is formed with a mounting groove 112. A portion of the winding member 300 is located in the mounting groove 112. The cover plate 120 is connected to the wheel body 110 to cover the mounting groove 112. In other embodiments, please refer to Figure 3 , Figure 5 and Figure 6 A restraining member 520 is connected to the traction wheel 100, and the restraining member 520 and the traction wheel 100 are spaced apart from each other in the axial direction of the traction wheel 100, and a restraining channel 501 is formed between the restraining member 520 and the traction wheel 100, and a part of the traction rope 530 is passed through the restraining channel 501, which can prevent the traction rope 530 from bulging upward during the process of releasing the traction rope 530 from the winding member 300.

[0055] In an alternative embodiment, see Figures 3 to 6 The traction wheel 100 is provided with a through groove 101 extending from the inside to the outside, and the winding member 300 is slidably matched with the through groove 101 , that is, the winding member 300 can rotate along with the rotation of the traction wheel 100 .

[0056] This embodiment uses Figure 5The perspective shown in FIG. 1 is used as an example to illustrate the specific working process. When the traction wheel 100 rotates clockwise, the winding member 300 will rotate along the above-mentioned rotation axis with the traction wheel 100, so that the winding member 300 will slide upward relative to the guide portion 220, and under the guidance of the guide portion 220, the winding member 300 will move relative to the through slot 101 in a direction away from the rotation axis. When the traction wheel 100 rotates counterclockwise, the winding member 300 will rotate along the above-mentioned rotation axis with the traction wheel 100, so that the winding member 300 will slide downward relative to the guide portion 220, and under the guidance of the guide portion 220, the winding member 300 will move relative to the through slot 101 in a direction close to the rotation axis. It can be seen that the present embodiment can make the winding member 300 movable by providing the through slot 101 on the traction wheel 100, and the structure is relatively simple.

[0057] In some embodiments, the winding member 300 includes a winding wheel 310, and the traction rope 530 is wound around the winding wheel 310. Further, the winding member 300 also includes a slide 320 and a bearing plate 340, the slide 320 and the bearing plate 340 are detachably connected, a portion of the slide 320 extends into the through slot 101, the winding wheel 310 is rotatably disposed on the bearing plate 340, and the slide 320 is limitedly fitted with the groove edge of the through slot 101. For further information, please refer to Figure 7 The winding member 300 also includes a stop plate 330, which is connected to the supporting plate 340 and is spaced apart from the winding wheel 310. A wire bundling space 301 is formed between the stop plate 330 and the winding wheel 310, and the traction rope 530 is passed through the wire bundling space 301. In this way, when the winding member 300 moves in a direction close to the fixing portion 210, the traction rope 530 wound around the winding member 300 can be prevented from detaching from the winding member 300.

[0058] In some embodiments, the traction mechanism also includes an elastic member 510, the guide portion 220 is a raised structure, the slide seat 320 has a sliding column, and the two ends of the elastic member 510 are respectively connected to the traction wheel 100 and the winding member 300 so that the sliding column fits the side of the guide portion 220.

[0059] Alternatively, in an alternative embodiment, see Figure 8 The winding member 300 is located at one side of the traction wheel 100 , and the traction wheel 100 and the winding member 300 are connected via a transmission mechanism 540 . When the traction wheel 100 rotates, the traction wheel 100 drives the winding member 300 to slide via the transmission mechanism 540 .

[0060] This embodiment uses Figure 8The perspective shown in FIG. 1 is used as an example to illustrate the specific working process. When the traction wheel 100 rotates in the clockwise direction, the traction wheel 100 can drive the winding member 300 to slide upward through the transmission mechanism 540 to move away from the fixed portion 210, and under the guidance of the guide portion 220, the winding member 300 will move in a direction away from the rotation axis. When the traction wheel 100 rotates in the counterclockwise direction, the traction wheel 100 can drive the winding member 300 to slide downward through the transmission mechanism 540 to move close to the fixed portion 210, and under the guidance of the guide portion 220, the winding member 300 will move in a direction close to the rotation axis. It can be seen that in this embodiment, the winding member 300 is driven to move by the traction wheel 100 and the transmission mechanism 540, and the winding member 300 is located on one side of the traction wheel 100. Therefore, the traction wheel 100 of this embodiment does not have a groove for the winding member 300 to slide, which can reduce the radial size of the traction wheel 100, thereby being more conducive to the layout of components in the operating handle 600.

[0061] In an alternative embodiment, see Figure 5 The fixing seat 200 includes a base 230, the guide portion 220 is a protruding structure, the fixing portion 210 is connected to the base 230, the guide portion 220 and the base 230 are detachably connected, and the guide portion 220 and the base 230 are hinged via a rotating shaft. Exemplarily, the guide portion 220 and the base 230 can be connected via at least two bolts, and the portion where the bolts pass through the guide portion 220 is a bare rod.

[0062] In this embodiment, the guide part 220 is a protruding structure, which is detachably connected to the base 230 and can rotate relative to the base 230. When the guide part 220 is detached from the base 230, the guide part 220 can rotate relative to the base 230, thereby changing the distance between each part of the guide part 220 except its own hinge and the rotation axis of the traction wheel 100. In this way, during the sliding of the winding member 300 relative to the guide part 220, the distance between the winding member 300 and the rotation axis of the traction wheel 100 can be changed, thereby adjusting the sensitivity of the traction mechanism to adjust the tension of the traction rope 530. It can be seen that after adopting the solution of this embodiment, the sensitivity of the traction mechanism can be further flexibly adjusted, so that the application range of the operating handle 600 of this embodiment is wider.

[0063] In an optional embodiment, please continue to refer to Figure 5 The hinge of the guide part 220 is located in the middle of its own extension direction, so that when the guide part 220 is rotated by the same angle, the end of the guide part 220 moves a smaller distance, thereby reducing the space reserved for the guide part 220 to rotate, which is beneficial to the layout of parts. Of course, the hinge of the guide part 220 can also be located at its own end, and this application is not limited to this.

[0064] In a further embodiment, when the winding member 300 is located at the hinge of the guide portion 220, the traction rope 530 is in a normal state, that is, when the target component is an active bending section, the normal state here can keep the active bending section in a straight state. Since the position of the hinge of the guide portion 220 itself does not change when the guide portion 220 is rotated, the distance between the hinge of the guide portion 220 and the rotation axis of the traction wheel 100 remains unchanged during the process of rotating the guide portion 220 to further adjust the sensitivity of the traction mechanism. When the winding member 300 is located at the hinge, the traction rope 530 can be in a normal state, and the adjustment control for controlling the rotation of the traction wheel 100 is just located at a preset position for easy operation. The adjustment control here can be a lever or a dial on the operating handle 600 that controls the rotation of the traction wheel 100.

[0065] In addition, since the traction rope 530 is in a normal state when the winding member 300 is located at the hinge of the guide portion 220, the guide portion 220 can also guide the winding member 300 when the winding member 300 rotates counterclockwise to drive the winding member 300 to move in the opposite direction.

[0066] In an alternative embodiment, see Fig. 9 and Fig.10 The traction mechanism also includes a telescopic structure 400, the two ends of which are respectively connected to the traction wheel 100 and the winding member 300, and the telescopic structure 400 can drive the winding member 300 to move in a direction close to or away from the rotation axis of the traction wheel 100. Exemplarily, the telescopic structure 400 here may include a screw rod 410 and a threaded hole, the screw rod 410 can rotate relative to the traction wheel 100, the threaded hole is provided in the winding member 300, the screw rod 410 is penetrated in the threaded hole and is threadedly connected with the threaded hole, and the movement of the winding member 300 can be controlled by rotating the screw rod 410, so as to make it close to or away from the rotation axis of the traction wheel 100. Further, a knob can be provided at the end of the screw rod 410 to facilitate the control of the rotation of the screw rod 410. In addition, the telescopic structure 400 can also be a gear rack mechanism, a connecting rod mechanism, etc., and the present application does not limit the structure of the base 230 of the telescopic structure 400.

[0067] The specific operation process of this embodiment is as follows: before controlling the rotation of the traction wheel 100, the winding member 300 can be controlled to move relative to the rotation axis of the traction wheel 100 through the telescopic structure 400 according to the user's demand for sensitivity, so that the distance between the winding member 300 and the rotation axis of the traction wheel 100 is kept at an appropriate size, and then the traction wheel 100 is controlled to rotate, and the traction wheel 100 will drive the winding member 300 to rotate together. When the traction wheel 100 rotates at the same angle, the rotation stroke of the winding member 300 around the rotation axis of the traction wheel 100 is kept at an appropriate size, and the sensitivity of the traction mechanism to adjust the tension of the traction rope 530 is also kept at an appropriate size. In this embodiment, the position between the winding member 300 and the above-mentioned rotation axis is adjusted in advance, and then the traction wheel 100 is controlled to rotate. In the process of the rotation of the traction wheel 100, if the telescopic structure 400 does not work, the position between the winding member 300 and the above-mentioned rotation axis will not change, which can improve the smoothness of the rotation of the traction wheel 100.

[0068] In an alternative embodiment, see Fig.11 and Fig.12 The traction wheel 100 is provided with a plurality of groups of mounting parts 111 spaced apart along its radial direction, that is, the distances between each group of mounting parts 111 and the rotation axis of the traction wheel 100 are not equal, and the winding member 300 can be respectively installed on each mounting part 111. Exemplarily, the mounting part 111 can be a plug-in structure, a snap-on structure, etc. In this case, the winding member 300 is provided with a plug-in structure, a snap-on structure, etc., where the plug-in structure can be a plug-in column or a plug-in hole, and the plug-in structure can be a plug-in hole or a plug-in column, etc.

[0069] The specific operation process of this embodiment is as follows: before controlling the rotation of the traction wheel 100, the winding member 300 can be installed on one of the mounting parts 111 according to the user's requirements for sensitivity, so that the distance between the winding member 300 and the rotation axis of the traction wheel 100 is kept at an appropriate size, and then the traction wheel 100 is controlled to rotate, and the traction wheel 100 will drive the winding member 300 to rotate together. When the traction wheel 100 rotates at the same angle, the rotation stroke of the winding member 300 around the rotation axis of the traction wheel 100 is kept at an appropriate size, and the sensitivity of the traction mechanism to adjust the tension of the traction rope 530 is also kept at an appropriate size. In this embodiment, the position between the winding member 300 and the above-mentioned rotation axis is adjusted in advance, and then the traction wheel 100 is controlled to rotate, and during the rotation of the traction wheel 100, the position between the winding member 300 and the above-mentioned rotation axis will not change, which can improve the smoothness of the rotation of the traction wheel 100.

[0070] like Figure 2As shown, the embodiment of the present application further discloses an operating handle 600 of an endoscope, including the traction mechanism described in any of the above embodiments, so that the operating handle 600 has the beneficial effects of the above traction structure, which will not be repeated here.

[0071] like Figure 1 As shown, the embodiment of the present application also discloses an endoscope, including the above-mentioned operating handle 600. Further, the endoscope also includes an insertion portion 700, the distal end of the operating handle 600 is connected to the proximal end of the insertion portion 700, and the insertion portion 700 includes the above-mentioned active bending section, which can be connected to the distal end of the active bending section through a traction rope 530, and the active bending section can be driven to bend by pulling the traction rope 530.

[0072] 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.

[0073] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present application and the claims, all of which are within the protection of the present application.

Claims

1. A traction mechanism of an endoscope, used for traction of a traction rope (530), characterized in that: It comprises a traction wheel (100), a fixing seat (200) and a winding piece (300), wherein the traction wheel (100) is capable of rotating relative to the fixing seat (200), the fixing seat (200) is used to be connected to the proximal end of the traction rope (530), and the winding piece (300) is used to wind the traction rope (530); The traction wheel (100) is connected to the winding member (300); the winding member (300) can follow the rotation of the traction wheel (100) and move in a direction approaching or moving away from the fixing seat (200) to adjust the tension of the traction rope (530); the winding member (300) can also move relative to the traction wheel (100) in a direction approaching or moving away from the rotation axis of the traction wheel (100); When the traction wheel (100) rotates, the winding member (300) can simultaneously approach the rotation axis of the fixed seat (200) and the traction wheel (100), or the winding member (300) can simultaneously move away from the rotation axis of the fixed seat (200) and the traction wheel (100); The fixing seat (200) comprises a fixing portion (210) and a guiding portion (220), wherein the fixing portion (210) is used to be connected to the proximal end of the traction rope (530), and along the rotation direction of the traction wheel (100) when the winding member (300) moves away from the fixing seat (200), the distance between the guiding portion (220) and the rotation axis of the traction wheel (100) gradually increases, and the winding member (300) and the guiding portion (220) are slidably matched, and when the traction wheel (100) rotates, the traction wheel (100) drives the winding member (300) to slide.

2. The traction mechanism according to claim 1, characterized in that: The traction wheel (100) is provided with a through groove (101), the through groove (101) extending from the inside to the outside, and the winding member (300) is slidably matched with the through groove (101); or, the winding member (300) is located on one side of the traction wheel (100), the traction wheel (100) and the winding member (300) are connected via a transmission mechanism (540), and when the traction wheel (100) rotates, the traction wheel (100) drives the winding member (300) to slide via the transmission mechanism (540).

3. The traction mechanism according to claim 1, characterized in that: The fixing seat (200) comprises a base (230), the guiding portion (220) is a protruding structure, the fixing portion (210) is connected to the base (230), the guiding portion (220) and the base (230) are detachably connected, and the guiding portion (220) and the base (230) are hinged via a rotating shaft.

4. The traction mechanism according to claim 3, characterized in that: The hinge point of the guide portion (220) is located in the middle of its own extension direction.

5. The traction mechanism according to claim 1, characterized in that: The traction mechanism further comprises a telescopic structure (400), the two ends of which are respectively connected to the traction wheel (100) and the winding member (300), and the telescopic structure (400) is capable of driving the winding member (300) to move in a direction approaching or away from the rotation axis of the traction wheel (100).

6. The traction mechanism according to claim 1, characterized in that: The traction wheel (100) is provided with a plurality of groups of mounting portions (111) spaced apart along its radial direction, and the winding member (300) can be mounted on each of the mounting portions (111) respectively.

7. An operating handle of an endoscope, characterized in that: The invention comprises a traction mechanism as claimed in any one of claims 1 to 6.

8. An endoscope, characterized in that: Comprising the operating handle (600) as claimed in claim 7.

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