Endoscope

Abstract

The utility model provides an endoscope. The endoscope comprises a handle, a bending control adjusting component, an insertion tube and a tip, a first wrapping post and a second wrapping post are arranged in the handle; the two ends of the insertion tube are connected with the handle and the tip respectively, and a bent structure is arranged at the end, close to the tip, of the insertion tube; the bending control adjusting part comprises a rotating shaft, a deflector rod, a control wheel and a pull wire; the control wheel is rotatably arranged in the handle through a rotating shaft; the control wheel is provided with a first winding part and a second winding part, and the first winding part and the second winding part are located on the two sides of the rotating shaft. One end of the deflector rod is connected with the control wheel, and the other end of the deflector rod extends out of the opening of the handle; the pull wire comprises a first pull wire and a second pull wire, and the far end of the first pull wire and the far end of the second pull wire are connected with the bending structure; the first wrapping post and the first winding part are used for winding and fixing the near end of the first pull wire, and the second wrapping post and the second winding part are used for winding and fixing the near end of the second pull wire.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an endoscope. Background Art

[0002] An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision mechanics, modern electronics, mathematics, and software. Its insertion tube may have structures such as an image sensor, an optical lens, and a light source. It may enter the stomach through the mouth or enter the body through other natural orifices to assist clinicians in medical observation and surgery.

[0003] The bending structure in the insertion tube is connected to the control wheel through a traction line, so that the traction line in different directions is pulled by the rotation of the control wheel to achieve the bending of the insertion tube in the corresponding direction. At present, the demand for large-angle bending of the insertion tube is becoming more and more urgent. Large-angle bending means that the control wheel must pull the traction line to move a larger stroke, but the traction stroke of the control wheel pulling the traction line is limited, resulting in the inability to achieve the required bending angle of the insertion tube. Utility Model Content

[0004] The utility model aims to provide an endoscope to solve the technical problem in the prior art that the traction travel of the control wheel to pull the traction wire is limited, so that the required bending angle of the insertion tube of the endoscope cannot be achieved.

[0005] The utility model provides an endoscope, which comprises:

[0006] Handle, bend control adjustment component, insertion tube and tip;

[0007] A first winding post and a second winding post are provided in the housing of the handle;

[0008] The two ends of the insertion tube are respectively connected to the handle and the tip, and the insertion tube is provided with a bending structure at one end close to the tip;

[0009] The bending control adjustment component includes a rotating shaft, a lever, a control wheel and a traction line;

[0010] The control wheel is rotatably arranged in the housing of the handle via the rotating shaft;

[0011] The control wheel is formed with a first winding portion and a second winding portion, and the first winding portion and the second winding portion are located on both sides of the rotating shaft;

[0012] One end of the lever is connected to the control wheel, and the other end of the lever extends out from the opening of the handle;

[0013] The traction wire includes a first traction wire and a second traction wire, and the distal ends of the first traction wire and the second traction wire are respectively connected to the bending structure; the first winding column and the first winding portion are used to wind and fix the proximal end of the first traction wire, and the second winding column and the second winding portion are used to wind and fix the proximal end of the second traction wire.

[0014] As an embodiment of the present invention, the first winding post and the second winding post are both located between the control wheel and the insertion tube;

[0015] The proximal end of the first pulling wire is connected to the first winding post after winding through the first winding portion;

[0016] The proximal end of the second pulling wire is connected to the second winding post after being wound around the second winding portion.

[0017] As an embodiment of the present invention, the first winding post and the second winding post are both located between the control wheel and the insertion tube;

[0018] The proximal end of the first pulling wire is sequentially wound around the first winding portion and the first winding post, and then connected to the first winding portion;

[0019] The proximal end of the second pulling wire is sequentially wound around the second winding portion and the second winding post, and then connected to the second winding portion.

[0020] As an embodiment of the present invention, the first winding post and the second winding post are both located on a side of the control wheel away from the insertion tube;

[0021] The proximal end of the first pulling wire is connected to the first winding portion after being wound around the first winding post;

[0022] The proximal end of the second pulling wire is connected to the second winding portion after being wound around the second winding post.

[0023] As an embodiment of the present invention, the first winding post and the second winding post are both located on a side of the control wheel away from the insertion tube;

[0024] The proximal end of the first pulling wire is sequentially wound around the first winding post and the first winding portion and then connected to the first winding post;

[0025] The proximal end of the second pulling wire is sequentially wound around the second winding post and the second winding portion and then connected to the second winding post.

[0026] As an embodiment of the present invention, the peripheral wall of the control wheel protrudes to form a convex eaves structure, and the convex eaves structure is located on one side or both sides of the first traction line and the second traction line.

[0027] As an embodiment of the utility model, the end surface of the control wheel is recessed to form a first winding groove and a second winding groove, the first winding groove is arranged around the first winding portion, and the second winding groove is arranged around the second winding portion; wherein the wiring of the first traction line connected to or wound around the first winding portion is located in the first winding groove, and the wiring of the second traction line connected to or wound around the second winding portion is located in the second winding groove.

[0028] As an embodiment of the present utility model, the endoscope further includes a first cover shell and a second cover shell, the first cover shell covers the first winding groove, and the second cover shell covers the second winding groove.

[0029] As an embodiment of the utility model, the control wheel is also formed with a first mounting groove and a second mounting groove, the first winding groove passes through the bottom of the first mounting groove, the second winding groove passes through the bottom of the second mounting groove, the first cover shell is clamped in the first mounting groove, and the second cover shell is clamped in the second mounting groove.

[0030] As an embodiment of the present utility model, the rotating shaft is integrally formed with the end surface of the control wheel, the shifting rod is integrally formed with the end surface of the control wheel, and the shifting rod is extended to be integrally formed with the rotating shaft.

[0031] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0032] In the utility model, the first winding post and the first winding portion are used to wind and fix the proximal end of the first traction line, and the second winding post and the second winding portion are used to wind and fix the proximal end of the second traction line; specifically, the proximal end of the first traction line is successively wound on the first winding portion and / or the first winding post at least once, and then fixed on the first winding portion or the first winding post, and when the control wheel rotates to change the distance between the first winding portion and the first winding post, the first traction line can be driven to achieve a traction stroke adjustment greater than twice the distance; the proximal end of the second traction line is successively wound on the first winding portion and / or the first winding post at least once, and then fixed on the first winding portion or the first winding post. After being wound at least once on the second winding portion and / or the second winding post, the wire is fixed on the second winding portion or the second winding post. When the control wheel rotates to change the distance between the second winding portion and the second winding post, the second traction wire can be driven to adjust the traction stroke to be greater than one times the distance. In this way, the insertion tube can be pulled by the first traction wire and the second traction wire to achieve a larger bending angle. The technical solution solves the technical problem in the prior art that the traction stroke of the traction wire pulled by the control wheel is limited, thereby resulting in the inability to achieve the required bending angle of the insertion tube of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is a schematic diagram of the exploded structure of an endoscope in one embodiment of the utility model;

[0035] Figure 2 This is a schematic diagram of the structure of a control wheel in an embodiment of the utility model;

[0036] Figure 3 This is a schematic diagram of the structure of the cover shell in one embodiment of the utility model;

[0037] Figure 4 It is a cross-sectional view of an endoscope in one embodiment of the utility model;

[0038] Figure 5 It is a cross-sectional view of an endoscope in another embodiment of the present invention.

[0039] Wherein: 100, endoscope; 10, handle; 101, first winding post; 102, second winding post; 103, opening; 104, third connecting hole; 11, first shell; 12, second shell; 20, insertion tube; 30, bending control adjustment component; 31, rotating shaft; 32, lever; 33, control wheel; 331, first winding part; 332, second winding part; 333, convex eaves structure; 334, first winding groove; 335, second winding groove; 336, first mounting groove; 337, second mounting groove; 338, first connecting post; 339, second connecting post; 34, traction line; 341, first traction line; 342, second traction line; 35, first cover shell; 351, first connecting hole; 36, second cover shell; 361, second connecting hole; 40, tip. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] See also Figure 1-Figure 5 The utility model provides an endoscope 100 , which includes a handle 10 , an insertion tube 20 , a bending control adjustment component 30 and a tip 40 .

[0046] Both ends of the insertion tube 20 are connected to the handle 10 and the tip 40 respectively, and the insertion tube 20 is provided with a bending structure at one end close to the tip 40, and the bending structure is a controllable bending structure, such as a snake bone structure.

[0047] The tip head 40 may be provided with a camera structure (not shown in the figure) and a light source structure (not shown in the figure) so that the tip head 40 can illuminate and take pictures inside the human body to obtain sample pictures about the human health condition.

[0048] The handle 10 has a shell structure that is convenient for gripping, and the shell structure has a cavity. A first winding post 101 and a second winding post 102 are arranged in the shell of the handle 10; the bending control adjustment component 30 includes a rotating shaft 31, a lever 32, a control wheel 33 and a traction line 34; the control wheel 33 is rotatably arranged in the cavity of the shell of the handle 10 through the rotating shaft 31; the control wheel 33 is formed with a first winding portion 331 and a second winding portion 332, and the first winding portion 331 and the second winding portion 332 are located on both sides of the rotating shaft 31; one end of the lever 32 is connected to the control wheel 33, and the other end of the lever 32 extends from the opening 103 of the handle 10. The first winding post 101 and the second winding post 102 can be arranged at other positions in the handle 10 that are not coaxial with the rotating shaft 31.

[0049] The pulling wire 34 includes a first pulling wire 341 and a second pulling wire 342 , and the distal ends of the first pulling wire 341 and the second pulling wire 342 are respectively connected to the tube walls on both sides of the end surface of the curved structure close to the tip 40 .

[0050] The first winding post 101 and the first winding portion 331 are used to wind and fix the proximal end of the first traction line 341 , and the second winding post 102 and the second winding portion 332 are used to wind and fix the proximal end of the second traction line 342 .

[0051] Specifically, the proximal end of the first traction line 341 is respectively wound at least once on the first winding portion 331 and / or the first winding post 101, and then fixed on the first winding portion 331 or the first winding post 101, so that when the distance between the first winding portion 331 and the first winding post 101 changes, the first traction line 341 is driven to achieve a traction stroke adjustment greater than one times the distance; the proximal end of the second traction line 342 is respectively wound at least once on the second winding portion 332 and / or the second winding post 102, and then fixed on the second winding portion 332 or the second winding post 102, so that when the distance between the second winding portion 332 and the second winding post 102 changes, the second traction line 342 is driven to achieve a traction stroke adjustment greater than one times the distance. It should be noted that after the traction and fixation of the first traction line 341 and the second traction line 342 are completed, the first traction line 341 and the second traction line 342 are respectively located on both sides of the rotating shaft 31.

[0052] It should be noted that, since the first traction line 341 and the second traction line 342 are located on both sides of the rotating shaft 31, and the distal ends of the first traction line 341 and the second traction line 342 are respectively connected to the tube walls on both sides of the end surface of the bending structure close to the tip 40, when the lever 32 is moved in different directions, the pulling effects on the first traction line 341 and the second traction line 342 are different, and the bending structure is also driven to bend in different directions. Figure 4 In the structural design, when the lever 32 is moved clockwise, the lever 32 drives the control wheel 33 to pull the first traction line 341, but does not pull the second traction line 342. At this time, the first traction line 341 can drive the bending structure to bend toward the side close to the first traction line 341. When the lever 32 is moved counterclockwise, the situation is opposite to the above situation, which will not be described here.

[0053] It should be noted that, for the convenience of description, in the embodiment of the present utility model, the "proximal end" is defined as the end close to the handle 10, and the "distal end" is defined as the end close to the tip 40, which will not be repeated later.

[0054] In the present invention, the proximal end of the first traction line 341 is successively wound at least once on the first winding portion 331 and the first winding post 101, and then fixed to the first winding portion 331 or the first winding post 101; the proximal end of the second traction line 342 is successively wound at least once on the second winding portion 332 and / or the second winding post 102, and then fixed to the second winding portion 332 or the second winding post 102, so that there are at least two sections of the first traction line 341 between the first winding post 101 and the first winding portion 331, and at least two sections of the second traction line 342 between the second winding portion 332 and the second winding post 102; when the lever 32 is turned to control the rotation of the control wheel 33, the first winding post 101 and the first winding post 102 are connected. The distance between the two ends of the winding rod 101 and the first winding portion 331, and the distance between the second winding rod 102 and the second winding portion 332 are changed; and since there are at least two sections of the first traction wire 341 between the first winding rod 101 and the first winding portion 331, and there are at least two sections of the second traction wire 342 between the second winding portion 332 and the second winding rod 102, this distance change will be converted into a change in the multiple of the traction stroke of the first traction wire 341, or converted into a change in the multiple of the traction stroke of the second traction wire 342, thereby pulling the insertion tube 20 to achieve a larger angle of bending. The use of this technical solution solves the technical problem in the prior art that the traction stroke of the control wheel to pull the traction wire to move is limited, thereby resulting in the inability to achieve the required bending angle of the insertion tube of the endoscope.

[0055] Among them, the first traction line 341 and the second traction line 342 can be made of steel wire rope material or polymer material; the connection between the proximal end of the first traction line 341 and the first winding column 101 or the first winding part 331 can be achieved by sleeve connection, glue connection and other connection methods, so as to achieve the fixation of the proximal end of the first traction line 341; the connection between the proximal end of the second traction line 342 and the second winding column 102 or the second winding part 332 can be achieved by sleeve connection, glue connection and other connection methods, so as to achieve the fixation of the second traction line 342.

[0056] In one embodiment, see Figure 4 The first winding post 101 and the second winding post 102 are both located between the control wheel 33 and the insertion tube 20; the proximal end of the first traction wire 341 is connected to the first winding post 101 after being wound around the first winding portion 331; the proximal end of the second traction wire 342 is connected to the second winding post 102 after being wound around the second winding portion 332.

[0057] Therefore, there are two sections of first pulling wire 341 between the first winding post 101 and the first winding portion 331, and there are two sections of second pulling wire 342 between the second winding post 102 and the second winding portion 332. Figure 4As shown, when the control wheel 33 is controlled to rotate clockwise, the distance between the first winding post 101 and the first winding portion 331 increases, and the increased distance is converted into a change of twice the traction stroke of the first traction line 341, thereby increasing the bending angle of the bending structure toward the side close to the first traction line 341; when the control wheel 33 is controlled to rotate counterclockwise, the distance between the second winding post 102 and the second winding portion 332 increases, and the increased distance is converted into a change of twice the traction stroke of the second traction line 342, thereby increasing the bending angle of the bending structure toward the side close to the second traction line 342.

[0058] In another embodiment, the first winding post 101 and the second winding post 102 are both located between the control wheel 33 and the insertion tube 20; the proximal end of the first traction wire 341 is sequentially wound around the first winding portion 331 and the first winding post 101, and then connected to the first winding portion 331; the proximal end of the second traction wire 342 is sequentially wound around the second winding portion 332 and the second winding post 102, and then connected to the second winding portion 332.

[0059] Therefore, there are three sections of the first traction line 341 between the first winding post 101 and the first winding portion 331, and there are three sections of the second traction line 342 between the second winding post 102 and the second winding portion 332. When the control wheel 33 is controlled to rotate clockwise, the distance between the first winding post 101 and the first winding portion 331 increases, and the increased distance is converted into a three-fold change in the traction stroke of the first traction line 341, thereby greatly increasing the bending angle of the bending structure toward the side close to the first traction line 341; when the control wheel 33 is controlled to rotate counterclockwise, the distance between the second winding post 102 and the second winding portion 332 increases, and the increased distance is converted into a three-fold change in the traction stroke of the second traction line 342, thereby greatly increasing the bending angle of the bending structure toward the side close to the second traction line 342.

[0060] In another embodiment, see Figure 5 The first winding post 101 and the second winding post 102 are both located on the side of the control wheel 33 away from the insertion tube 20; the proximal end of the first traction wire 341 is connected to the first winding portion 331 after being wound around the first winding post 101; the proximal end of the second traction wire 342 is connected to the second winding portion 332 after being wound around the second winding post 102.

[0061] Similarly, there are two sections of first pulling wire 341 between the first winding post 101 and the first winding portion 331, and there are two sections of second pulling wire 342 between the second winding post 102 and the second winding portion 332. Figure 5As shown, when the control wheel 33 is controlled to rotate counterclockwise, the distance between the first winding post 101 and the first winding portion 331 increases, and the increased distance is converted into a change of twice the traction stroke of the first traction line 341, thereby increasing the bending angle of the bending structure toward the side close to the first traction line 341; when the control wheel 33 is controlled to rotate clockwise, the distance between the second winding post 102 and the second winding portion 332 increases, and the increased distance is converted into a change of twice the traction stroke of the second traction line 342, thereby increasing the bending angle of the bending structure toward the side close to the second traction line 342.

[0062] In another embodiment, the first winding post 101 and the second winding post 102 are both located on the side of the control wheel 33 away from the insertion tube 20; the proximal end of the first traction wire 341 is sequentially wound around the first winding post 101 and the first winding portion 331 and then connected to the first winding post 101; the proximal end of the second traction wire 342 is sequentially wound around the second winding post 102 and the second winding portion 332 and then connected to the second winding post 102.

[0063] Therefore, there are three sections of the first traction line 341 between the first winding post 101 and the first winding portion 331, and there are three sections of the second traction line 342 between the second winding post 102 and the second winding portion 332. When the control wheel 33 is controlled to rotate counterclockwise, the distance between the first winding post 101 and the first winding portion 331 increases, and the increased distance is converted into a three-fold change in the traction stroke of the first traction line 341, thereby increasing the bending angle of the bending structure toward the side close to the first traction line 341; when the control wheel 33 is controlled to rotate clockwise, the distance between the second winding post 102 and the second winding portion 332 increases, and the increased distance is converted into a three-fold change in the traction stroke of the second traction line 342, thereby increasing the bending angle of the bending structure toward the side close to the second traction line 342.

[0064] See also Figure 4 and Figure 5 The proximal end of the first traction line 341 is arranged on the side circumferential wall of the control wheel 33 centered on the rotating shaft 31 until it is wound around the first winding portion 331 or connected to the first winding portion 331; the proximal end of the second traction line 342 is arranged on the other side circumferential wall of the control wheel 33 centered on the rotating shaft 31 until it is wound around the second winding portion 332 or connected to the second winding portion 332.

[0065] Therefore, no matter whether the control wheel 33 pulls the first traction line 341 or the control wheel 33 pulls the second traction line 342, the first traction line 341 and the second traction line 342 both move along the peripheral wall of the control wheel 33, that is, the movement paths of the first traction line 341 and the second traction line 342 are arc-shaped, thereby increasing the traction stroke of the first traction line 341 and the second traction line 342; and guiding the stroke of the first traction line 341 and the second traction line 342.

[0066] In some specific embodiments, see Figure 2 The peripheral wall of the control wheel 33 is raised to form a convex eave structure 333, and the convex eave structure 333 is located on one side or both sides of the first traction line 341 and the second traction line 342. When the first traction line 341 and the second traction line 342 arranged on the peripheral walls on both sides of the control wheel 33 swing, the convex eave structure 333 limits the swing range of this section of the line, so that it can only swing on the peripheral wall of the control wheel 33 and cannot be detached from the peripheral wall of the control wheel 33, thereby achieving stable routing of the first traction line 341 and the second traction line 342 relative to the peripheral wall of the control wheel 33.

[0067] In some specific embodiments, the convex eaves structure 333 can be continuous or composed of multiple sections. It can be set on both sides of the first traction line 341 and the second traction line 342, or on the side where the first traction line 341 and the second traction line 342 are easily loosened from the peripheral wall of the control wheel 33. The embodiments of the utility model do not impose specific restrictions.

[0068] See also Figure 2 The end surface of the control wheel 33 is recessed to form a first winding groove 334 and a second winding groove 335, the first winding groove 334 is arranged around the first winding portion 331, and the second winding groove 335 is arranged around the second winding portion 332; wherein the first traction line 341 is connected to or wound around the first winding portion 331 and is located in the first winding groove 334, and the second traction line 342 is connected to or wound around the second winding portion 332 and is located in the second winding groove 335.

[0069] In this embodiment, a first winding groove 334 is arranged around the first winding portion 331, and a second winding groove 335 is arranged around the second winding portion 332, so that when the proximal end of the first traction line 341 is wound around or connected to the first winding portion 331, the first winding groove 334 can store and restrict the wiring wound around or connected to the first winding portion 331; when the proximal end of the second traction line 342 is wound around or connected to the second winding portion 332, the second winding groove 335 can store and restrict the wiring wound around or connected to the second winding portion 332.

[0070] In one embodiment, see Figure 1 , Figure 3 as well as Figure 4 The endoscope 100 further includes a first cover shell 35 and a second cover shell 36, wherein the first cover shell 35 covers the first winding groove 334, and the second cover shell 36 covers the second winding groove 335. The first cover shell 35 limits the first traction line 341 that has been wound around or connected to the first winding portion 331 to the first winding groove 334, thereby preventing it from escaping from the first winding groove 334, further improving the connection stability of the first traction line 341 relative to the first winding portion 331; the second cover shell 36 limits the second traction line 342 that has been wound around or connected to the second winding portion 332 to the second winding groove 335, thereby preventing it from escaping from the second winding groove 335, further improving the connection stability of the second traction line 342 relative to the second winding portion 332.

[0071] In some specific embodiments, see Figure 2-Figure 5 The control wheel 33 is also formed with a first mounting groove 336 and a second mounting groove 337. The first winding groove 334 passes through the bottom of the first mounting groove 336, and the second winding groove 335 passes through the bottom of the second mounting groove 337. The first cover shell 35 is clamped in the first mounting groove 336, and the second cover shell 36 is clamped in the second mounting groove 337.

[0072] The first winding groove 334 passes through the bottom of the first mounting groove 336. Therefore, when the first cover shell 35 is clamped in the first mounting groove 336, the first cover shell 35 restricts the routing of the first winding groove 334, and the first cover shell 35 is fixedly installed relative to the control wheel 33 through the first mounting groove 336; the second winding groove 335 passes through the bottom of the second mounting groove 337. Therefore, when the second cover shell 36 is clamped in the second mounting groove 337, the second cover shell 36 restricts the routing of the second winding groove 335, and the second mounting groove 337 is used to fix the second cover shell 36 relative to the control wheel 33.

[0073] In some specific embodiments, see Figure 2-Figure 5 The first cover shell 35 is formed with a first connecting hole 351; the control wheel 33 is also formed with a first connecting column 338, and the first connecting column 338 is inserted into the first connecting hole 351, thereby further realizing the positioning, installation and stability of the first cover shell 35 relative to the control wheel 33.

[0074] In some specific embodiments, see Figure 2-Figure 5The second cover shell 36 is penetrated by a second connecting hole 361 ; the control wheel 33 is also formed with a second connecting column 339 , and the second connecting column 339 is inserted into the second connecting hole 361 , thereby further realizing the positioning and installation of the second cover shell 36 relative to the control wheel 33 and the stability.

[0075] In some specific embodiments, see Figure 1 The handle 10 includes a first shell 11 and a second shell 12 covering the first shell 11 ; thereby assembling the control wheel 33 , the traction line 34 , etc. into the shell of the handle 10 is convenient.

[0076] In some specific embodiments, see Figure 1 , Figure 4 as well as Figure 5 The first winding post 101 and the second winding post 102 are formed by the first shell 11, and the end faces of the first winding post 101 and the second winding post 102 are recessed to form a third connecting hole 104; the second shell 12 is protruding to form a third connecting post (not shown in the figure), and the third connecting post is clamped into the third connecting hole 104, so that the covering connection between the second shell 12 and the first shell 11 is tighter.

[0077] It should be noted that the control wheel 33 and the rotating shaft 31 can be split or integrated; the lever 32 can be connected to the control wheel 33, or to the rotating shaft 31, or to the control wheel 33 and the rotating shaft 31, and the connection between the lever 32 and the control wheel 33 can be a fixed connection or a detachable connection, and the connection between the lever 32 and the rotating shaft 31 can be a fixed connection or a detachable connection.

[0078] In some specific embodiments, see Figure 2 The rotating shaft 31 is integrally formed with the end surface of the control wheel 33, the shifting rod 32 is integrally formed with the end surface of the control wheel 33, and the shifting rod 32 extends to be integrally formed with the rotating shaft 31, thereby ensuring the connection stability of the rotating shaft 31, the control wheel 33 and the shifting rod 32.

[0079] In some specific embodiments, the wheel surface of the control wheel 33 is formed with a slot (not shown in the figure) extending from the edge of the wheel surface to the center of the rotating shaft 31, or a hole (not shown in the figure) is provided on the wheel surface, and the side of the lever 32 in contact with the wheel surface may be provided with a mating portion (not shown in the figure) that cooperates with the slot or the hole, such as a protruding ridge with a cross-section consistent with the slot or a mounting column with a cross-section consistent with the hole (not shown in the figure), thereby realizing a detachable connection between the lever 32 and the control wheel 33.

[0080] In some specific embodiments, a mounting hole (not shown in the figure) may be formed in the center of the control wheel 33, and the rotating shaft 31 may be pinned to the mounting hole, or a transition fit or interference fit may be used to achieve a detachable connection between the rotating shaft 31 and the control wheel 33.

[0081] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. An endoscope, characterized in that: include: Handle, bend control adjustment component, insertion tube and tip; A first winding post and a second winding post are provided in the housing of the handle; The two ends of the insertion tube are respectively connected to the handle and the tip, and the insertion tube is provided with a bending structure at one end close to the tip; The bending control adjustment component includes a rotating shaft, a lever, a control wheel and a traction line; The control wheel is rotatably arranged in the housing of the handle via the rotating shaft; The control wheel is formed with a first winding portion and a second winding portion, and the first winding portion and the second winding portion are located on both sides of the rotating shaft; One end of the lever is connected to the control wheel, and the other end of the lever extends out from the opening of the handle; The traction wire includes a first traction wire and a second traction wire, and the distal ends of the first traction wire and the second traction wire are respectively connected to the bending structure; the first winding column and the first winding portion are used to wind and fix the proximal end of the first traction wire, and the second winding column and the second winding portion are used to wind and fix the proximal end of the second traction wire.

2. The endoscope according to claim 1, characterized in that The first winding post and the second winding post are both located between the control wheel and the insertion tube; The proximal end of the first pulling wire is connected to the first winding post after winding through the first winding portion; The proximal end of the second pulling wire is connected to the second winding post after being wound around the second winding portion.

3. The endoscope according to claim 1, characterized in that The first winding post and the second winding post are both located between the control wheel and the insertion tube; The proximal end of the first pulling wire is sequentially wound around the first winding portion and the first winding post, and then connected to the first winding portion; The proximal end of the second pulling wire is sequentially wound around the second winding portion and the second winding post, and then connected to the second winding portion.

4. The endoscope according to claim 1, characterized in that The first winding post and the second winding post are both located on a side of the control wheel away from the insertion tube; The proximal end of the first pulling wire is wound around the first winding post and then connected to the first winding portion; The proximal end of the second pulling wire is connected to the second winding portion after being wound around the second winding post.

5. The endoscope according to claim 1, characterized in that The first winding post and the second winding post are both located on a side of the control wheel away from the insertion tube; The proximal end of the first pulling wire is sequentially wound around the first winding post and the first winding portion and then connected to the first winding post; The proximal end of the second pulling wire is sequentially wound around the second winding post and the second winding portion and then connected to the second winding post.

6. The endoscope according to any one of claims 1 to 5, characterized in that: The peripheral wall of the control wheel protrudes to form a convex eave structure, and the convex eave structure is located on one side or both sides of the first traction line and the second traction line.

7. The endoscope according to any one of claims 1 to 5, characterized in that: The end surface of the control wheel is recessed to form a first winding groove and a second winding groove, the first winding groove is arranged around the first winding part, and the second winding groove is arranged around the second winding part; wherein the wiring of the first traction line connected to or wound around the first winding part is located in the first winding groove, and the wiring of the second traction line connected to or wound around the second winding part is located in the second winding groove.

8. The endoscope according to claim 7, characterized in that The endoscope further includes a first cover shell and a second cover shell, wherein the first cover shell covers the first winding groove, and the second cover shell covers the second winding groove.

9. The endoscope according to claim 8, characterized in that The control wheel is also formed with a first mounting groove and a second mounting groove, the first winding groove passes through the bottom of the first mounting groove, the second winding groove passes through the bottom of the second mounting groove, the first cover shell is clamped in the first mounting groove, and the second cover shell is clamped in the second mounting groove.

10. The endoscope according to any one of claims 1 to 5, characterized in that: The rotating shaft is integrally formed with an end surface of the control wheel, the shifting rod is integrally formed with the end surface of the control wheel, and the shifting rod is extended to be integrally formed with the rotating shaft.

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