An endoscope snake bone and an endoscope

Abstract

The present invention discloses an endoscope snake bone and an endoscope. The endoscope snake bone includes a plurality of sequentially connected bone joint members. The end of the bone joint member is provided with a screw buckle, and two adjacent bone joint members are rotatably connected through the screw buckle. The end of the bone joint member is further provided with a side groove and / or a side wing. Among two adjacent bone joint members, the side wing of one bone joint member is fitted in the side groove of the other bone joint member. Among two adjacent bone joint members, the top wall of the side wing of one bone joint member and the bottom wall of the side groove of the other bone joint member are respectively located on both sides of the horizontal plane passing through the rotation center of the screw buckle. When the endoscope snake bone is bent, the offset of the side wing is small, which reduces the occupation of the internal space of the endoscope snake bone, reduces the friction between the endoscope snake bone and the coating layer, and ensures the reliability of use of the endoscope snake bone.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an endoscope snake bone, i.e., an endoscope. Background Art

[0002] In recent years, endoscopes have been widely used in the medical and industrial fields. By operating the operation part of the endoscope, the bending part inserted into the inspection space can be bent in multiple directions, so as to adjust the position or posture of the imaging device, so that the inspection area can be observed better.

[0003] The movement device of the bending part is a snake bone. Common snake bones are divided into jointed snake bones and integral snake bones. The jointed snake bones are divided into riveted jointed snake bones, laser-cut jointed snake bones, snap-fit jointed snake bones, etc., and the integral snake bones are divided into laser-cut integral snake bones, plastic integral snake bones, spring integral snake bones, etc.

[0004] The laser-cut jointed snake bone is composed of multiple snake bone joints connected together. Traction wires are connected to these snake bone joints, and the traction wires are pulled through the operation part of the endoscope, so that the snake bone bends in the corresponding direction. The multiple snake bone joints are formed by laser-cutting a hollow pipe. After cutting, a snap-fit structure is formed on each snake bone joint, and adjacent snake bone joints can rotate around the snap-fit structure under the traction of the traction wire.

[0005] In order to increase the connection strength, the snake bone is provided with a flank structure. However, when the snake bone bends or the bending angle is relatively large, the flanks will deviate from the original circumferential surface of the snake bone in the radial direction, with one side of the flank offset inward and the other side of the flank offset outward. Moreover, the longer the flank, the greater the offset amount, and this increase in the offset amount will cause the occupation of the internal space of the snake bone, exacerbate the friction between the snake bone and the coating layer during the movement of the snake bone, thus affecting the normal use of the endoscope. Summary of the Invention

[0006] The first object of the present invention is to provide an endoscope snake bone, which has a smaller offset amount of the flank when bending, reduces the occupation of the internal space of the endoscope snake bone, reduces the friction between the endoscope snake bone and the coating layer, and ensures the use reliability of the endoscope snake bone.

[0007] The second object of the present invention is to provide an endoscope, which has a smoother bending movement, higher use reliability, and a longer service life.

[0008] To achieve the above technical effects, the technical solution of the present invention is as follows:

[0009] The present invention discloses an endoscope snake bone, which includes a plurality of bone joint members connected in sequence. The end of the bone joint member is provided with a snap button, and two adjacent bone joint members are rotatably connected through the snap button. The end of the bone joint member is further provided with a side groove and / or a flank. Among two adjacent bone joint members, the flank of one bone joint member is fitted into the side groove of the other bone joint member; wherein: among two adjacent bone joint members, the top wall of the flank of one bone joint member and the bottom wall of the side groove of the other bone joint member are respectively located on both sides of a horizontal plane passing through the rotation center of the snap button.

[0010] In some embodiments, the top wall of the flank has a first concave portion recessed towards the horizontal plane passing through the rotation center of the snap button.

[0011] In some embodiments, the bottom wall of the side groove has a second concave portion recessed towards the horizontal plane passing through the rotation center of the snap button.

[0012] In some embodiments, the end of the bone joint member is further provided with an auxiliary slot and / or an auxiliary post, and the auxiliary post of one bone joint member can be fitted into the auxiliary slot of the other bone joint member.

[0013] In some specific embodiments, the auxiliary slots are located on both sides of the flank.

[0014] In some embodiments, a first limiting protrusion is provided on the side wall of the side groove, and a second limiting protrusion is provided on the side wall of the flank. When two adjacent bone joint members are deflected relative to each other to the maximum bending angle, the first limiting protrusion can abut against the second limiting protrusion.

[0015] In some specific embodiments, the first limiting protrusions are provided on both opposite side walls of the side groove.

[0016] In some embodiments, the snap button includes a mating protrusion and a mating groove provided at the end of the bone joint member; wherein: among two adjacent bone joint members, the mating protrusion of one bone joint member is inserted into the mating groove of the other bone joint member, and when two adjacent bone joint members are deflected relative to each other, the mating protrusion can rotate in the mating groove.

[0017] In some specific embodiments, the snap button further includes a screwing groove spaced from the mating protrusion, and a screwing protrusion spaced from the mating groove; wherein: among two adjacent bone joint members, the screwing groove of one bone joint member is mated with the screwing protrusion of the other bone joint member, and when two adjacent bone joint members are deflected relative to each other, the screwing protrusion can rotate relative to the screwing groove.

[0018] The present invention also discloses an endoscope, including the endoscope snake bone described above.

[0019] Beneficial effects of the endoscope snake bone of the present invention: Since in two adjacent bone joint members, the top wall of the flank of one bone joint member and the bottom wall of the side groove of the other bone joint member are respectively located on both sides of the horizontal plane passing through the rotation center of the rotary buckle, the distances between the top wall of the flank and the bottom wall of the side groove and the horizontal plane of the rotation center of the rotary buckle are reduced, thereby reducing the radial offset generated by the flank when the endoscope snake bone bends, reducing the occupation of the internal space of the endoscope snake bone, reducing the friction between the endoscope snake bone and the coating layer, and ensuring the use reliability of the endoscope snake bone.

[0020] Beneficial effects of the endoscope of the present invention: Due to having the endoscope snake bone described above, the bending movement of the endoscope is relatively smooth, the use reliability is relatively high, and the service life is relatively long.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the endoscope snake bone according to Embodiment 1 of the present invention;

[0023] Figure 2 is a schematic structural diagram of the endoscope snake bone according to Embodiment 2 of the present invention;

[0024] Figure 3 is a schematic structural diagram of the endoscope snake bone according to Embodiment 3 of the present invention;

[0025] Figure 4 is a schematic structural diagram of the endoscope snake bone according to Embodiment 4 of the present invention;

[0026] Reference Signs:

[0027] 1. Bone joint member; 11. Rotary buckle; 111. Fitting protrusion; 112. Fitting groove; 113. Screwing groove; 114. Screwing protrusion;

[0028] 12. Flank; 121. Top wall; 122. Second limiting convex; 123. First recess;

[0029] 13. Side groove; 131. Bottom wall; 122. First limiting convex; 133. Second recess;

[0030] 14. Auxiliary slot; 15. Auxiliary plug post. Detailed Embodiment

[0031] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Next, refer to Figures 1-4 to describe the specific structure of the endoscope snake bone according to an embodiment of the present invention.

[0036] The present invention discloses an endoscope snake bone. As Figure 1 shown, the endoscope snake bone of this embodiment includes a plurality of sequentially connected bone joint members 1. The end of the bone joint member 1 is provided with a swivel buckle 11. Adjacent two bone joint members 1 are rotatably connected through the swivel buckle 11. The end of the bone joint member 1 is also provided with a side groove 13 and / or a flank 12. Among adjacent two bone joint members 1, the flank 12 of one bone joint member 1 is fitted in the side groove 13 of the other bone joint member 1. Among adjacent two bone joint members 1, the top wall 121 of the flank 12 of one bone joint member 1 and the bottom wall 131 of the side groove 13 of the other bone joint member 1 are respectively located on both sides of the horizontal plane passing through the rotation center of the swivel buckle 11.

[0037] It can be understood that during the actual working process, pulling the traction wire inside the endoscope snake bone can cause the rotary buttons 11 of two adjacent bone joint members 1 to rotate, thereby causing the endoscope snake bone to bend. During the bending process, the lateral wings 12 will inevitably have a radial offset. In the prior art, the top wall of the lateral wing and the bottom wall of the side groove are both located above the horizontal plane passing through the rotation center of the rotary button, which results in a very large distance between the top wall of the lateral wing and the horizontal plane passing through the rotation center of the rotary button, and thus a very large radial offset of the lateral wing. In this embodiment, by adjusting the positions of the rotary button 11, the lateral wing 12, and the side groove 13, the top wall 121 of the lateral wing 12 of one bone joint member 1 and the bottom wall 131 of the side groove 13 of another bone joint member 1 are respectively located on both sides of the horizontal plane passing through the rotation center of the rotary button 11. When the lengths of the lateral wings 12 are the same, compared with the prior art, the distances between the top wall 121 of the lateral wing 12 and the bottom wall 131 of the side groove 13 and the horizontal plane passing through the rotation center of the rotary button 11 are reduced, thereby reducing the radial offset generated by the lateral wing 12 when the endoscope snake bone bends, reducing the occupation of the internal space of the endoscope snake bone, reducing the friction between the endoscope snake bone and the coating layer, and ensuring the reliability of use of the endoscope snake bone.

[0038] It should be added that in the present invention, the shape of the bone joint member 1 can be various. For the two bone joint members 1 located at the end of the endoscope snake bone, only one end is provided with a lateral wing 12 and / or a side groove 13. The bone joint members 1 located at non-end parts of the endoscope snake bone have various forms. Specifically, the lateral wings 12 and the side grooves 13 are respectively provided at both ends of the bone joint member 1; the lateral wings 12 are respectively provided at both ends of the bone joint member 1; the side grooves 13 are respectively provided at both ends of the bone joint member 1; the lateral wings 12 and the side grooves 13 are both provided at both ends of the bone joint member 1. The shape of the bone joint member 1 can be selected according to the actual needs of the endoscope snake bone.

[0039] Preferably, the distance between the top wall 121 of the lateral wing 12 of one bone joint member 1 and the horizontal plane passing through the rotation center of the rotary button 11 is equal to the distance between the bottom wall 131 of the side groove 13 of another bone joint member 1 and the horizontal plane passing through the rotation center of the rotary button 11. Thus, when the endoscope snake bone is in a bent state, the radial offset of the lateral wing 12 can be greatly reduced, thereby better reducing the occupation of the internal space of the endoscope snake bone, reducing the friction between the endoscope snake bone and the coating layer, and ensuring the reliability of use of the endoscope snake bone.

[0040] Preferably, the top wall 121 of the flank 12 of one joint member 1 and the bottom wall 131 of the side groove 13 of another joint member 1 are symmetrically arranged with respect to the horizontal plane passing through the rotation center of the rotary buckle 11. Thus, when the endoscope snake bone is in a bent state, the radial offset of the flank 12 can be greatly reduced, thereby better reducing the occupation of the internal space of the endoscope snake bone, reducing the friction between the endoscope snake bone and the coating layer, and ensuring the reliability of use of the endoscope snake bone.

[0041] In some embodiments, as Figure 4 shown, the top wall 121 of the flank 12 has a first concave portion 123 that is recessed toward the horizontal plane passing through the rotation center of the rotary buckle 11. It can be understood that the friction distance between the flank 12 of the endoscope snake bone and the coating layer is composed of the compound of the radial offset and the axial offset of the flank 12. And the closer the axial offset of the flank 12 is to the position of its central axis, the greater its axial offset. That is to say, even with the same radial offset, the part closer to the central axis of the flank 12 has more serious friction with the coating layer. Thus, in this embodiment, the top wall 121 of the flank 12 has a first concave portion 123 that is recessed toward the horizontal plane passing through the rotation center of the rotary buckle 11. The added first concave portion 123 can reduce the distance between the part closer to the central axis of the flank 12 and the horizontal plane passing through the rotation center of the rotary buckle 11. That is to say, a recess is made at the place where the axial offset amount on the flank 12 is large, so that this area has a smaller radial offset amount, and thus the friction distance generated between the endoscope snake bone and the coating layer can be reduced, thereby reducing the magnitude of the frictional force generated between the endoscope snake bone and the coating layer.

[0042] It should be noted here that the shape of the first concave portion 123 can be selected as a V shape, a U shape, an arc shape or the like according to actual needs, and the specific shape of the first concave portion 123 is not limited herein.

[0043] In some embodiments, the bottom wall 131 of the side groove 13 has a second recess 133 that is recessed in a horizontal plane toward the rotation center of the over-rotation buckle 11. It can be understood that the friction distance generated between the side wall of the side groove 13 provided on the endoscope snake bone and the coating layer is composed of the compound of the radial offset and the axial offset of the side wall of the side groove 13. And the closer the axial offset of the side wall of the side groove 13 is to the central axis of the wing 12, the greater the axial offset. That is to say, even with the same radial offset, the friction between the part of the side wall of the side groove 13 close to the central axis of the wing 12 and the coating layer is more serious. Therefore, in this embodiment, the bottom wall 131 of the side groove 13 has a second recess 133 that is recessed in a horizontal plane toward the rotation center of the over-rotation buckle 11. The added second recess 133 can reduce the distance between the part close to the central axis of the wing 12 and the horizontal plane of the rotation center of the over-rotation buckle 11. That is to say, a recess is made at a place on the bottom wall 131 of the side groove 13 where the axial offset amount is large, so that this area has a smaller radial offset amount, so that the friction distance generated between the side wall of the side groove 13 provided on the endoscope snake bone and the coating layer can be reduced, thereby reducing the magnitude of the frictional force generated between the endoscope snake bone and the coating layer.

[0044] It should be noted here that the shape of the second recess 133 can be selected according to actual needs, such as an inclined surface, an arc surface, etc. The specific structure of the second recess 133 is not limited herein.

[0045] In some embodiments, such as Figure 2 shown, the end of the joint member 1 is further provided with an auxiliary slot 14 and / or an auxiliary plug 15. The auxiliary plug 15 of one joint member 1 can be fitted into the auxiliary slot 14 of another joint member 1. It can be understood that in some specific embodiments, such as Figure 2 shown, the auxiliary slots 14 are located on both sides of the wing 12. It can be understood that compared with the auxiliary strengthening structure arranged on one side, the bilateral strengthening structure of this embodiment can play a better strengthening role, thereby ensuring the use reliability of the endoscope snake bone.

[0046] It should be added that in the present invention, the shape of the joint member 1 can be various. For the two joint members 1 located at the end of the endoscope snake bone, only one end is provided with an auxiliary slot 14 and / or an auxiliary plug 15. The joint member 1 located at the non-end of the endoscope snake bone has various forms. Specifically, the two ends of the joint member 1 are respectively provided with an auxiliary slot 14 and an auxiliary plug 15; the two ends of the joint member 1 are respectively provided with auxiliary slots 14; the two ends of the joint member 1 are respectively provided with auxiliary plugs 15; both ends of the joint member 1 are provided with an auxiliary slot 14 and an auxiliary plug 15. The shape of the joint member 1 can be selected according to the actual needs of the endoscope snake bone.

[0047] In some embodiments, such as Figures 3-4As shown, a first limiting protrusion 132 is provided on the side wall of the side groove 13, and a second limiting protrusion 122 is provided at the end of the wing 12. When two adjacent joint members 1 are relatively deflected to the maximum bending angle, the first limiting protrusion 132 can abut against the second limiting protrusion 122. It can be understood that when two adjacent joint members 1 are deflected by rotating the rotary buckle 11, when the two joint members 1 are deflected to the maximum bending angle, the cooperation between the first limiting protrusion 132 and the second limiting protrusion 122 enables the endoscope snake bone to have good strength in the maximum bending angle state. At this time, even if a bending force is continuously applied to the endoscope snake bone, the endoscope snake bone is not easily broken.

[0048] In some specific embodiments, first limiting protrusions 132 are provided on both opposite side walls of the side groove 13. It can be understood that, compared with the limiting structure provided on one side, the bilateral limiting structure of this embodiment can better play a strengthening role, thereby ensuring that the endoscope snake bone has greater strength in the maximum bending angle state. When the endoscope snake bone is at the maximum bending angle and a bending force is continuously applied to the endoscope snake bone, due to the greater strength of the endoscope snake bone, the phenomenon of the endoscope snake bone being bent is not likely to occur, improving the reliability of the endoscope snake bone.

[0049] In some embodiments, the rotary buckle 11 includes a mating protrusion 111 and a mating groove 112 provided at the end of the joint member 1. Among them: in two adjacent joint members 1, the mating protrusion 111 of one joint member 1 is inserted into the mating groove 112 of the other joint member 1. When the two adjacent joint members 1 are relatively deflected, the mating protrusion 111 can rotate in the mating groove 112. It can be understood that the cooperation between the mating protrusion 111 and the mating groove 112 can ensure the stable cooperation of the two joint members 1, thereby ensuring the stable relative deflection of the two adjacent joint members 1.

[0050] In some specific embodiments, the rotary buckle 11 further includes a screwing groove 113 spaced from the mating protrusion 111, and a screwing protrusion 114 spaced from the mating groove 112. In two adjacent joint members 1, the screwing groove 113 of one joint member 1 cooperates with the screwing protrusion 114 of the other joint member 1. When the two adjacent joint members 1 are relatively deflected, the screwing protrusion 114 can rotate relative to the screwing groove 113. It can be understood that the cooperation between the screwing groove 113 and the screwing protrusion 114 plays a role in guiding the deflection of the joint member 1 on the one hand, enabling the joint member 1 to rotate only along the direction in which the screwing groove 113 extends, realizing the stable bending of the entire endoscope snake bone, and on the other hand, can further improve the connection stability of the two joint members 1.

[0051] In some more specific embodiments, screwing grooves 113 are provided on both sides of the mating protrusion 111, and screwing protrusions 114 are provided on both sides of the mating groove 112. Thereby, the stable bending stability of the endoscope snake bone is further improved.

[0052] In some embodiments, there are multiple screwing buttons 11 and multiple side wings 12, which are evenly distributed along the circumferential direction of the joint member 1. Thus, the connection stability and rotational stability of the two joint members 1 can be improved.

[0053] Advantageously, there are two screwing buttons 11 and two side wings 12.

[0054] Next, with reference to Figures 1-4 the endoscope snake bone of four specific embodiments of the present invention will be described.

[0055] Embodiment 1:

[0056] As Figure 1 shown, the endoscope snake bone of this embodiment includes a plurality of sequentially connected joint members 1. The end of the joint member 1 is provided with a screwing button 11. Two adjacent joint members 1 are rotatably connected through the screwing button 11. The end of the joint member 1 is further provided with a side groove 13 and / or a side wing 12. Among two adjacent joint members 1, the side wing 12 of one joint member 1 is fitted into the side groove 13 of the other joint member 1. Among two adjacent joint members 1, the top wall 121 of the side wing 12 of one joint member 1 and the bottom wall 131 of the side groove 13 of the other joint member 1 are respectively located on both sides of the horizontal plane passing through the rotation center of the screwing button 11. The screwing button 11 includes a mating protrusion 111, a mating groove 112, a screwing groove 113 spaced from the mating protrusion 111, and a screwing protrusion 114 spaced from the mating groove 112 provided at the end of the joint member 1. Among two adjacent joint members 1, the mating protrusion 111 of one joint member 1 is inserted into the mating groove 112 of the other joint member 1, the screwing groove 113 of one joint member 1 is mated with the screwing protrusion 114 of the other joint member 1. When two adjacent joint members 1 are relatively deflected, the screwing protrusion 114 can rotate relative to the screwing groove 113, and the mating protrusion 111 can rotate within the mating groove 112.

[0057] Embodiment 2:

[0058] As Figure 2As shown in the figure, the endoscope snake bone of this embodiment includes a plurality of sequentially connected joint members 1. The end of the joint member 1 is provided with a screw buckle 11. Two adjacent joint members 1 are rotatably connected through the screw buckle 11. The end of the joint member 1 is further provided with a side groove 13 and / or a flank 12. Among two adjacent joint members 1, the flank 12 of one joint member 1 is fitted into the side groove 13 of the other joint member 1. Among two adjacent joint members 1, the top wall 121 of the flank 12 of one joint member 1 and the bottom wall 131 of the side groove 13 of the other joint member 1 are respectively located on both sides of the horizontal plane passing through the rotation center of the screw buckle 11. The end of the joint member 1 is further provided with an auxiliary slot 14 and an auxiliary plug 15. The auxiliary plug 15 of one joint member 1 can be inserted into the auxiliary slot 14 of the other joint member 1. The auxiliary slot 14 is located on both sides of the flank 12. The screw buckle 11 includes a mating projection 111, a mating groove 112, a screwing groove 113 spaced from the mating projection 111, and a screwing projection 114 spaced from the mating groove 112 provided at the end of the joint member 1. Among two adjacent joint members 1, the mating projection 111 of one joint member 1 is inserted into the mating groove 112 of the other joint member 1. The screwing groove 113 of one joint member 1 is mated with the screwing projection 114 of the other joint member 1. When two adjacent joint members 1 are relatively deflected, the screwing projection 114 is rotatable relative to the screwing groove 113, and the mating projection 111 can rotate in the mating groove 112.

[0059] Embodiment Three:

[0060] As Figure 3As shown in the figure, the endoscope snake bone of this embodiment includes a plurality of sequentially connected bone joint members 1. The end of the bone joint member 1 is provided with a screw buckle 11. Two adjacent bone joint members 1 are rotatably connected through the screw buckle 11. The end of the bone joint member 1 is further provided with a side groove 13 and / or a flank 12. Among two adjacent bone joint members 1, the flank 12 of one bone joint member 1 is fitted into the side groove 13 of the other bone joint member 1. Among two adjacent bone joint members 1, the top wall 121 of the flank 12 of one bone joint member 1 and the bottom wall 131 of the side groove 13 of the other bone joint member 1 are respectively located on both sides of the horizontal plane passing through the rotation center of the screw buckle 11. First limit protrusions 132 are provided on the opposite two side walls of the side groove 13, and a second limit protrusion 122 is provided at the end of the flank 12. When two adjacent bone joint members 1 are relatively deflected to the maximum bending angle, the first limit protrusion 132 can abut against the second limit protrusion 122. The screw buckle 11 includes a fitting protrusion 111, a fitting groove 112 provided at the end of the bone joint member 1, a screwing groove 113 spaced from the fitting protrusion 111, and a screwing protrusion 114 spaced from the fitting groove 112. Among two adjacent bone joint members 1, the fitting protrusion 111 of one bone joint member 1 is inserted into the fitting groove 112 of the other bone joint member 1, the screwing groove 113 of one bone joint member 1 is fitted with the screwing protrusion 114 of the other bone joint member 1. When two adjacent bone joint members 1 are relatively deflected, the screwing protrusion 114 can rotate relative to the screwing groove 113, and the fitting protrusion 111 can rotate in the fitting groove 112.

[0061] Embodiment 4:

[0062] As Figure 4 shown in the figure, the endoscope snake bone of this embodiment includes a plurality of sequentially connected bone joint members 1. The end of the bone joint member 1 is provided with a screw buckle 11. Two adjacent bone joint members 1 are rotatably connected through the screw buckle 11. The end of the bone joint member 1 is further provided with a side groove 13 and / or a flank 12. The top wall 121 of the flank 12 has a first concave portion 123 recessed toward the horizontal plane passing through the rotation center of the screw buckle 11. The bottom wall 131 of the side groove 13 has a second concave portion 133 recessed toward the horizontal plane passing through the rotation center of the screw buckle 11. Among two adjacent bone joint members 1, the flank 12 of one bone joint member 1 is fitted into the side groove 13 of the other bone joint member 1. Among two adjacent bone joint members 1, the top wall 121 of the flank 12 of one bone joint member 1 and the bottom wall 131 of the side groove 13 of the other bone joint member 1 are respectively located on both sides of the horizontal plane passing through the rotation center of the screw buckle 11. First limit protrusions 132 are provided on the opposite two side walls of the side groove 13, and a second limit protrusion 122 is provided at the end of the flank 12. When two adjacent bone joint members 1 are relatively deflected to the maximum bending angle, the first limit protrusion 132 can abut against the second limit protrusion 122.

[0063] The screwing member 11 includes a mating protrusion 111 provided at the end of the joint member 1, a mating groove 112, a screwing groove 113 spaced from the mating protrusion 111, and a screwing protrusion 114 spaced from the mating groove 112. Among two adjacent joint members 1, the mating protrusion 111 of one joint member 1 is inserted into the mating groove 112 of the other joint member 1, the screwing groove 113 of one joint member 1 is engaged with the screwing protrusion 114 of the other joint member 1. When two adjacent joint members 1 are relatively deflected, the screwing protrusion 114 is rotatable relative to the screwing groove 113, and the mating protrusion 111 can rotate within the mating groove 112.

[0064] The present invention also discloses an endoscope, including the endoscope snake bone described above.

[0065] Due to the endoscope snake bone described above, the bending movement of the endoscope in the embodiment of the present invention is relatively smooth, the use reliability is relatively high, and the service life is relatively long.

[0066] In the description of this specification, the descriptions referring to the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An endoscope snake bone, characterized in that, It includes a plurality of sequentially connected joint members (1). A turnbuckle (11) is provided at the end of the joint member (1). Two adjacent joint members (1) are rotatably connected through the turnbuckle (11). A side groove (13) and / or a flank (12) are also provided at the end of the joint member (1). Among two adjacent joint members (1), the flank (12) of one joint member (1) is fitted into the side groove (13) of the other joint member (1); wherein: Among two adjacent joint members (1), the top wall (121) of the flank (12) of one joint member (1) and the bottom wall (131) of the side groove (13) of the other joint member (1) are respectively located on both sides of the horizontal plane passing through the rotation center of the turnbuckle (11); The top wall (121) of the flank (12) has a first recess (123) recessed towards the horizontal plane passing through the rotation center of the turnbuckle (11); The bottom wall (131) of the side groove (13) has a second recess (133) recessed towards the horizontal plane passing through the rotation center of the turnbuckle (11).

2. The endoscope snake bone according to claim 1, characterized in that, An auxiliary slot (14) and / or an auxiliary post (15) are also provided at the end of the joint member (1). The auxiliary post (15) of one joint member (1) can be fitted into the auxiliary slot (14) of the other joint member (1).

3. The endoscope snake bone according to claim 2, wherein The auxiliary slot (14) is located on both sides of the flank (12).

4. The endoscope snake bone according to claim 1, wherein A first limit protrusion (132) is provided on the side wall of the side groove (13), and a second limit protrusion (122) is provided on the side wall of the flank (12). When two adjacent joint members (1) are relatively deflected to the maximum bending angle, the first limit protrusion (132) can abut against the second limit protrusion (122).

5. The endoscope snake bone according to claim 4, wherein The first limit protrusions (132) are provided on both opposite side walls of the side groove (13).

6. The endoscope snake bone according to claim 1, wherein The turnbuckle (11) includes a mating protrusion (111) and a mating groove (112) provided at the end of the joint member (1); wherein: Among two adjacent joint members (1), the mating protrusion (111) of one joint member (1) is inserted into the mating groove (112) of the other joint member (1). When two adjacent joint members (1) are relatively deflected, the mating protrusion (111) can rotate in the mating groove (112).

7. The endoscope snake bone according to claim 6, wherein The turnbuckle (11) further includes a screwing groove (113) spaced from the mating protrusion (111), and a screwing protrusion (114) spaced from the mating groove (112); wherein: Among two adjacent joint members (1), the screwing groove (113) of one joint member (1) cooperates with the screwing protrusion (114) of the other joint member (1). When two adjacent joint members (1) are relatively deflected, the screwing protrusion (114) is rotatable relative to the screwing groove (113).

8. An endoscope, characterized in that, It includes the endoscopic snake bone according to any one of claims 1-7.

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