Endoscope snake bone and endoscope
By designing the angle of the gradient internode groove of the endoscobra bone, involute bending from head to tail is achieved, which solves the limitation of observation range and connection rib fracture caused by the fixation of the bending radius in the prior art, and improves the service effect and service life of the endoscope.
Patent Information
- Application Number
- CN202420736289.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-10
AI Technical Summary
When used, the existing endobra bones have a fixed bending radius and cannot bend effectively in a narrow space, which affects the observation range and use effect.
Design an endobra bone, with the angle of the adjacent snake bones gradually changing. Each snake bone has a different angle when bending, so as to achieve involute curves from head to tail to avoid head-to-tail collisions to damage the camera and snake bones.
Through the gradient angle design, the endobra bone can achieve a larger angle and range observation in a narrow space, reducing the possibility of connecting ribs breaking and extending service life.
Smart Images
Figure CN222584453U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to an endoscope snake and an endoscope. Background Art
[0002] In the related art, the joints of the endoscopic snake bone are connected by connecting ribs. When the endoscope is in use, the front end is inserted into the body of the subject, the front camera observes the lesions in the body, and the rear end is located outside the body of the subject for operation. The forces and bending amplitudes of the snake bone joints at different positions are different. One end of the traction wire is fixed at the front end, and the other end is located at the rear end for pulling to drive the front end to bend. When used in some narrow places, it is necessary to increase the bending amplitude of the adjacent joints near the front end of the endoscope snake bone as much as possible to facilitate observation of a larger angle and range; it is necessary to minimize the bending amplitude of the adjacent joints near the rear end to avoid contact and damage to human tissue.
[0003] Among them, the current endoscopes basically have a fixed bending radius. Either the bending radius is small and the area that can be covered after bending is small, and some distal channels cannot be observed and entered, or the bending radius is large and cannot be bent in a narrow space, affecting the actual use effect of the endoscope snake. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an endoscope snake bone, in which the intersegmental grooves of adjacent snake bones have gradually changing angles, and each snake bone has a different angle when bent, so that the snake bone can be bent in an involute manner from head to tail, especially when the bending angle is large, it can avoid head-to-tail collision and damage to the camera and the snake bone.
[0005] The utility model also provides an endoscope with the endoscope snake bone.
[0006] According to an embodiment of the utility model, the endoscope snake bone includes a plurality of bone segments and a plurality of connecting ribs, each of which is arranged in sequence along a first direction, and each of which is provided with a first hole that passes through along the first direction, and each of the first holes of each of the bone segments corresponds to each other in the first direction. The connecting ribs connect the two end surfaces of the adjacent bone segments facing each other so that the adjacent bone segments can rotate relative to each other. The end surfaces of the adjacent bone segments facing each other are respectively provided with a first surface and a second surface, and the angle between the first surface and the second surface gradually decreases along the first direction.
[0007] The endoscope snake bone according to the embodiment of the utility model has at least the following beneficial effects: the intersegmental groove angles of adjacent snake bones change gradually, and each segment of the snake bone is bent at a different angle, so that the snake bone can be bent in an involute manner from head to tail, and especially when the bending angle is large, it can avoid head-to-tail collision and damage to the camera and the snake bone.
[0008] The endoscope snake bone has a first end and a second end opposite to each other in the first direction, the distance between the end faces of the connecting ribs near the first end opposite to each other in the second direction is X1, and the distance between the end faces of the connecting ribs near the second end opposite to each other in the second direction is X2, wherein the second direction is perpendicular to the first direction, and X1<X2;
[0009] And / or, the spacing between the opposite end faces of the connecting rib near the first end in the third direction is Y1, and the spacing between the opposite end faces of the connecting rib near the second end in the third direction is Y2, wherein the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, and Y1<Y2.
[0010] The endoscope snake according to the embodiment of the utility model has at least the following beneficial effects: by controlling the spacing between the opposite end faces of the connecting ribs, the width of the connecting ribs relatively close to the first end can be made smaller than the width of the connecting ribs relatively close to the second end, so that the bending amplitude of the endoscope snake near the first end is larger, and the bending amplitude near the second end is smaller. And the cross-sectional area of each bone joint can be increased one by one from the first end to the second end, so that the structural strength of each connecting rib can be increased one by one from the first end to the second end, so that the connecting ribs can have sufficient structural strength to cope with the traction force gradually increasing from the first end to the second end, thereby reducing the possibility of the connecting ribs breaking, ensuring the normal use of the endoscope and extending its service life.
[0011] According to some embodiments of the present invention, the connecting ribs extend along the circumference of the joint, wherein along the first direction, from the first end to the second end, the extension distance of each connecting rib gradually increases.
[0012] According to some embodiments of the utility model, the endoscope snake bone further includes a reinforcing rib, the structural strength of the reinforcing rib is greater than that of the joint, and the reinforcing rib is arranged inside the joint.
[0013] According to some embodiments of the present invention, the reinforcing rib surrounds at least a portion of the first hole along the circumference of the first hole, and the ratio of the size of the reinforcing rib in the first direction to the size of the bone joint in the first direction is H, satisfying 1 / 4<H<1 / 2.
[0014] According to some embodiments of the present invention, at least one of the outer surface of the condyle located at the first end and the outer surface of the condyle located at the second end is provided with a groove, and the groove is used to fix the snake bone skin or a fixing piece.
[0015] According to some embodiments of the utility model, the condyle is provided with a plurality of second holes extending along the first direction, the second holes of adjacent condyles correspond one to one in the first direction, and in the same condyle, at least two second holes are located on the same side of the condyle in the third direction.
[0016] According to some embodiments of the utility model, the joint is provided with a second hole, the second hole is used to pass the traction wire, and the second holes of adjacent joints correspond one to one in the first direction; the joint has an outer wall and an inner wall, the inner wall defines the first hole, and the second hole is located between the outer wall and the inner wall.
[0017] According to some embodiments of the utility model, the joint is provided with a plurality of second holes extending along the first direction, the second holes are used for passing traction wires, the second holes of adjacent joints correspond one to one in the first direction, wherein the connecting ribs and the second holes are staggered in the circumferential direction of the joint.
[0018] An endoscope according to an embodiment of the utility model includes the endoscope snake bone in the above embodiment.
[0019] The endoscope according to the embodiment of the utility model has at least the following beneficial effects: by applying the endoscope snake bone of the embodiment of the present application, the intersegmental groove angles of adjacent snake bones gradually change, and each snake bone has a different bending angle, so that the snake bone can be bent in an involute manner from head to tail, especially when the bending angle is large, it can avoid head-to-tail collision and damage to the camera and the snake bone, thereby optimizing the user experience of the endoscope and extending its service life.
[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:
[0022] Figure 1 A three-dimensional diagram of an endoscope snake bone according to an embodiment of the utility model;
[0023] Figure 2 It is a front view of the endoscope snake bone of the embodiment of the utility model;
[0024] Figure 3 for Figure 2 A cross-sectional view of the endoscopic snake bone in;
[0025] Figure 4 Schematic diagram of some bone joints from a top-down perspective.
[0026] Reference numerals:
[0027] Endoscopic snake bone 10;
[0028] Condyle 100, inner wall 101, outer wall 102, first hole 110, groove 120, first surface 130, second surface 140, second hole 150, reinforcing rib 160;
[0029] Connecting rib 200 , opening 300 , first end 400 , second end 500 . DETAILED DESCRIPTION
[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0032] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0034] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does 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.
[0035] In response to the problem in the endoscope snake bone in the related technology that the connecting ribs closer to the rear end of the endoscope are more likely to break, the present application adjusts the cross-sectional area of each connecting rib to adjust the structural strength of the connecting ribs at different positions, thereby reducing the possibility of each connecting rib breaking.
[0036] The following describes the endoscope snake bone of an embodiment of the present application with reference to the accompanying drawings.
[0037] Reference Figures 1 to 4 According to the embodiment of the utility model, the endoscope snake bone 10 comprises a plurality of joints 100 and a plurality of connecting ribs 200. The joints 100 are arranged in sequence along the first direction, and the joints 100 are provided with first holes 110 that penetrate along the first direction. The first holes 110 of the joints 100 correspond to each other in the first direction, and the first holes 110 are used to pass the clamp channel tube. The connecting ribs 200 connect the two end surfaces of the adjacent joints 100 that face each other, so that the adjacent joints 100 can rotate relative to each other.
[0038] The endoscope snake 10 has a first end 400 and a second end 500 opposite to each other in the first direction. The first end 400 is the patient end, which is used as the end of the endoscope entering the human body. The second end 500 is the doctor's operation end, which is used as the end of the endoscope entering the human body, or as the end located outside the human body for operation. The direction from the first end 400 to the second end 500 is the same as the direction from the front end of the endoscope to the rear end.
[0039] In the present application, the first surface 130 and the second surface 140 are respectively arranged on the end surfaces facing each other of the adjacent condyles 100, and the first surface 130 and the second surface 140 are arranged obliquely, and the extended surfaces of the two can form an intersection, and the angle between the first surface 130 and the second surface 140 gradually decreases along the first direction. In one embodiment, the angle between the two surfaces facing each other of the first condyle and the second condyle is X, the angle between the two surfaces facing each other of the second condyle and the third condyle is XN, and the angle between the two surfaces facing each other of the third condyle and the fourth condyle is X-2N, and so on, and the angle between the internode grooves of the entire snake bone condyle decreases successively. In the same embodiment, the value of X can be 18 degrees, and the value of N can be 0.2 degrees. Through the above-mentioned setting, the internode groove angles of adjacent snake bones are gradually changed, and the angles of each snake bone are different when bending, so that the snake bone can be bent involute from head to tail, especially when the bending angle is large, it can avoid head-to-tail collision and damage to the camera and snake bone, optimize the use experience of the endoscope and extend the service life. At the same time, it can reduce the interference between adjacent joints 100 during relative rotation, thereby increasing the rotation angle of adjacent joints 100 to improve the overall bendability and bending flexibility of the endoscope snake bone 110.
[0040] Further, the endoscope snake bone 10 has a first end 400 and a second end 500 opposite to each other in the first direction, and the spacing of the end faces of the connecting rib 200 near the first end 400 in the present application in the second direction is X1, and the spacing of the end faces of the connecting rib 200 near the second end 500 in the second direction is X2, wherein the second direction is perpendicular to the first direction, and X1<X2. And / or, the spacing of the end faces of the connecting rib 200 near the first end 400 in the third direction is Y1, and the spacing of the end faces of the connecting rib 200 near the second end 500 in the third direction is Y2, wherein the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, and Y1<Y2. By controlling the spacing between the opposite end faces of the connecting rib 200, the width of the connecting rib 200 relatively close to the first end 400 can be made smaller than the width of the connecting rib 200 relatively close to the second end 500, so that the bending amplitude of the endoscope snake bone 10 near the first end 400 is larger, and the bending amplitude near the second end 500 is smaller. In addition, the cross-sectional area of each condyle 100 can be increased one by one from the first end 400 to the second end 500, so that the structural strength of each connecting rib 200 can be increased one by one from the first end 400 to the second end 500, so that the connecting rib 200 can have sufficient structural strength to cope with the gradually increasing traction force from the first end 400 to the second end 500, thereby reducing the possibility of the connecting rib 200 breaking, ensuring the normal use of the endoscope and extending its service life.
[0041] It can be understood that the connecting ribs 200 close to the first end 400 and the connecting ribs 200 close to the second end 500 mentioned in the present application are relative. For example, when two adjacent connecting ribs 200 are selected, the side facing the first end 400 is the connecting rib 200 close to the first end 400, and the side facing the second end 500 is the connecting rib 200 close to the second end 500.
[0042] The first holes 110 of each joint 100 correspond to each other in the first direction, which can be understood as the coaxial arrangement of the first holes 110 of each joint 100 in the first direction, so that endoscopy components such as a clamp tube and a lighting lamp can smoothly penetrate the first hole 110. Among them, the deviation of the axis within the allowable error range can also be considered as a coaxial arrangement.
[0043] On the other hand, the traction wire is pulled from the second end 500, so the traction force on the connecting rib 200 closer to the second end 500 is greater. In the embodiment where the cross-sectional area of each connecting rib 200 is the same, the bending degree between adjacent joints 100 closer to the second end 500 is greater. Since the structural strength of each connecting rib 200 in this embodiment increases in sequence from the first end 400 to the second end 500, and the connecting rib 200 with greater structural strength needs to apply a greater traction force to bend, therefore, when the endoscope snake 10 of the embodiment of the present application is bent, it can effectively reduce the bending degree between adjacent joints 100 of the endoscope snake near the second end 500, thereby making the overall bending radius of the endoscope snake 10 smaller, so as to further reduce the probability of damage to each joint 100 and each connecting rib 200, and extend the service life of the endoscope snake 10. It can be understood that since the first end 400 is the end facing the subject, when the endoscopic snake bone 10 needs to be bent, what is mainly needed is the bending between adjacent bone joints 100 near the first end 400, so that the endoscopic snake bone 10 can flexibly shuttle in the cavity of the subject. Under the same traction force, the degree of bending between adjacent bone joints 100 near the second end 500 is reduced, which is equivalent to improving the bending flexibility of the endoscopic snake bone 10.
[0044] Wherein, each connecting rib 200 can be extended along the second direction, and the extension distance of each connecting rib 200 gradually increases from the first end 400 to the second end 500, so that the structural strength of each connecting rib 200 is increased one by one, or the connecting rib 200 can also be extended along the third direction. However, in order to increase the cross-sectional area of the first hole 110 as much as possible, the wall thickness of the condyle 100 is usually set to be smaller, and the space available for extension is smaller. Therefore, further, in some embodiments, the connecting rib 200 extends along the circumference of the condyle 100, wherein, along the first direction, from the first end 400 to the second end 500, the extension distance of each connecting rib 200 gradually increases. By setting the connecting rib 200 to extend in sequence along the circumference of the condyle 100, the space on the end faces of two adjacent condyles 100 facing each other can be used as much as possible to ensure that the connecting rib 200 can extend to a cross section with sufficient area to ensure structural strength.
[0045] Specifically, in order to achieve mutual bending of adjacent joints 100, an opening 300 connected to the first hole 110 is defined between the connecting rib 200 and the adjacent joints 100. The connecting rib 200 provides a structural connection for each joint 100 and serves as a fulcrum for force during bending. The joints 100 are provided with second holes 150 that pass through along the first direction. The second holes 150 of adjacent joints 100 correspond one to one in the first direction. A traction wire is passed through each second hole 150. By pulling the traction wire, traction can be applied to each joint 100, so that the adjacent joints 100 rotate relative to each other, and the opening 300 will expand or shrink as the adjacent joints 100 bend.
[0046] The second holes 150 of the adjacent joints 100 correspond one to one in the first direction, which can be understood as the coaxial arrangement of the second holes 150 of the adjacent joints 100 in the first direction, so that the traction wire can smoothly pass through the second holes 150 to pull the endoscopic snake bone. Among them, the deviation of the axis within the allowable error range can also be considered as a coaxial arrangement.
[0047] The condyle 100 has an outer wall 102 and an inner wall 101, the inner wall 101 defines the first hole 110, and the second hole 150 is distributed along the peripheral track of the first hole 110 on the cross section of the condyle 100 perpendicular to the axial direction of the first hole 110. The second hole 150 can be located inside the inner wall 101, which can be achieved by providing a piercing portion for opening the second hole 150 inside the inner wall 101 of the condyle 100. Alternatively, the second hole 150 can be located outside the outer wall 102, which can be achieved by providing a piercing portion for opening the second hole 150 on the outer wall 102 of the condyle 100.
[0048] Further, the second hole 150 is located between the outer wall 102 and the inner wall 101. Compared with providing a penetration portion in the first hole 110 or outside the condyle 100 for the traction wire to be penetrated, the second hole 150 is directly provided between the outer wall 102 and the inner wall 101, which can reduce the interference with the first hole 110, thereby enabling the endoscope snake bone 10 to have a larger internal space, so as to reduce the difficulty of penetrating the endoscope components or realize the setting of more endoscope functional components, or, when the internal space is constant, the volume of the endoscope snake bone 10 can be reduced to reduce the difficulty of the endoscope snake bone 10 moving in the cavity of the subject. In some embodiments, the boundary of the second hole 150 and the first hole 110 is connected, so that the second hole 150 is connected to the first hole 110. Or, in other embodiments, the boundary of the second hole 150 and the first hole 110 has a certain distance, so that the second hole 150 can be relatively closed to the first hole 110. The embodiments in which the boundaries of the second hole 150 and the first hole 110 are connected or separated are all satisfied that the second hole 150 is located between the outer wall 102 and the inner wall 101. The specific positional relationship between the second hole 150 and the first hole 110 can be adaptively selected according to the process and actual needs.
[0049] It can be understood that, by setting the second hole 150 between the outer wall 102 and the inner wall 101, compared with providing a penetration portion in the first hole 110 for the traction wire to penetrate, the radial distance between the second hole 150 and the connecting rib 200 is shorter than that of the first hole 110, and since the second hole 150 directly penetrates the wall of the condyle 100, the effect of the opening of the second hole 150 on the structural strength of the connecting rib 200 is increased. By staggering the connecting rib 200 and the second hole 150 in the circumferential direction of the condyle 100, the effect of the opening of the second hole 150 on the structural strength of the connecting rib 200 can be effectively reduced, so as to ensure that the connecting rib 200 has sufficient structural strength for bending support.
[0050] Specifically, one or more second holes 150 can be provided on a single condyle 100, and the actual bending direction of the endoscope snake 10 is determined by the position of the traction wire and the connecting rib 200 passing through the second hole 150. For example, in an embodiment in which only one connecting rib 200 and one second hole 150 are provided, the endoscope snake 10 can only achieve unidirectional rotation.
[0051] Furthermore, the connecting rib 200 and the second hole 150 are staggered in the circumferential direction of the condyle 100. Since the connecting rib 200 is a fulcrum subjected to force during bending, it is subjected to greater force. Staggering the second hole 150 and the connecting rib 200 can reduce the influence of the hole position on the structural strength of the connecting rib 200, ensure the structural strength of the connecting rib 200, and when the second hole 150 and the connecting rib 200 are staggered, the utilization rate of the traction force can be improved, and the force required to drive the adjacent condyles 100 to bend can be reduced.
[0052] The connecting rib 200 and the second hole 150 are staggered in the circumferential direction of the condyle 100, which can be understood as taking a cross section perpendicular to the axial direction of the first hole 110 between adjacent condyles 100, and in the cross section, the axis of the second hole 150 and the connecting rib 200 are at least spaced apart in the circumferential direction of the condyle 100. The second hole 150 and the connecting rib 200 can partially overlap in the radial direction of the first hole 110, or can be completely staggered and have no overlap.
[0053] In some embodiments, in the same condyle 100, at least two second holes 150 are located on the same side of the condyle 100 in the third direction, and the third direction is perpendicular to the first direction, so that multiple traction wires can jointly drive adjacent condyles 100 to bend in the same direction. Compared with the related art that only controls the bending in a single direction by one traction wire, the joint driving of multiple traction wires can increase the traction force, reduce the deformation of the traction wire, and reduce the load on a single traction wire, so as to reduce the possibility of traction wire breakage. Alternatively, under the condition of providing the same traction force, multiple traction wires with smaller diameters can be used for traction, reducing the size of a single traction wire.
[0054] On the other hand, when a single second hole 150 is used to pass a traction wire, a fixing structure is required to limit the head end of the traction wire to the outside of the second hole 150 to prevent the traction wire from slipping into the second hole 150 when being pulled, resulting in traction failure. When at least two second holes 150 are located on the same side of the condyle 100 in the third direction, the head end of the traction wire can be extended from one of the second holes 150 and then passed through another second hole 150, so as to pass through the first end 400 of the endoscope snake 10 and pass out from the second end 500, and then go back through another second hole 150 from the second section to the first end 400. Since the head end and the tail end of the traction wire are both located on the same side of the endoscope snake 10, traction can be performed by pulling the head end and the tail end of the traction wire at the same time, eliminating the need for a limiting operation of the head end of the traction wire, or the head end of the traction wire can be knotted with the traction wire itself or simply fixed, without the need for an additional fixing structure, thereby reducing costs and assembly difficulty.
[0055] Specifically, the second holes 150 located on the same side can be arranged adjacent to each other to facilitate the insertion of the traction wire, wherein the adjacent second holes 150 can be understood as the outer circle contours of the two second holes 150 being tangent, or can be understood as the outer circle contours of the two second holes 150 being connected. In other embodiments, there is a certain distance between the outer circle contours of the two second holes 150, and the normal use of the same traction wire after winding and passing through can be satisfied at this distance.
[0056] In some embodiments, a plurality of connecting ribs 200 are connected between adjacent joints 100, and at least two connecting ribs 200 are arranged relative to each other in the second direction, so that the adjacent joints 100 can be bent along both sides of the third direction, wherein the second direction is perpendicular to the first direction, and both the first direction and the second direction are perpendicular to the third direction. By setting the positions of at least two connecting ribs 200, the bending of the endoscope snake bone 10 can be made more directionally controllable, the control of the bending is made more stable, and the control difficulty of medical staff during endoscopic operation is reduced. Specifically, two connecting ribs 200 can be connected between adjacent joints 100, and the two connecting ribs 200 are opposite in the second direction. Adjacent joints 100 can also be connected with a number of connecting ribs 200 that is a multiple of two, part of the connecting ribs 200 is located on one side in the second direction, and another part of the connecting ribs 200 is located on the other side in the second direction, and the connecting ribs 200 located on both sides in the second direction are opposite to each other.
[0057] Furthermore, at least one second hole 150 is located on one side of the first hole 110 in the third direction, and at least one second hole 150 is located on the other side of the first hole 110 in the third direction. By providing at least one second hole 150 on both sides in the third direction, it is ensured that the traction wires on both sides can achieve bending of the adjacent joints 100 on both sides in the third direction. In addition, the second hole 150 is centrally arranged in the second direction, so that the traction force of the traction wire can be applied more evenly, and the utilization rate of the traction force can be improved, ensuring that the traction wire can pull the adjacent joints 100 to a state where the facing end faces are tightly pressed.
[0058] It can be understood that the central setting can be understood as the second hole 150 is located on the midline of the line connecting the two connecting ribs 200, or the second hole 150 is located on the midline of the line connecting the two connecting ribs 200 within a range of 2 mm deviation on both sides of the second direction.
[0059] When there are multiple second holes 150 on one side in the third direction, multiple traction wires can be pulled in the same bending direction, and the probability of traction wire breakage can be reduced. The second holes 150 located on the same side can be arranged in sequence along the third direction. Alternatively, they can also be arranged in sequence along the second direction, and further, the midline of the line connecting the two second holes 150 can coincide with the midline of the line connecting the two connecting ribs 200, so that the joint 100 is more evenly stressed.
[0060] In some embodiments, at least one joint 100 is provided with a groove 120 on its outer surface, and the groove 120 is used for gluing. By providing the groove 120 on the outer surface of the joint 100, the groove 120 can provide a positioning for the setting position of the glue, thereby improving the positioning accuracy when the snake bone skin (not shown in the figure) is bonded to the joint 100, and when the glue is squeezed and bonded, the wall surface of the groove 120 will limit the displacement of the glue, thereby reducing the chance of the glue flowing around, thereby reducing the chance of glue overflow.
[0061] In the first direction, at least one of the condyles 100 at the first end 400 and the condyles 100 at the second end 500 has a groove 120. Since the snake bone skin needs to cover each condyle 100 and the opening 300 between adjacent condyles 100, the snake bone skin needs to cover from the condyle 100 at the first end 400 to the condyle 100 at the second end 500 along the first direction. At least one of the condyles 100 at the first end 400 and the condyle 100 at the second end 500 is provided with a groove 120, which can quickly realize the positioning of the bonding position of the head or tail of the snake bone skin, thereby improving the bonding efficiency. According to the bonding requirements, the condyles 100 at the first end 400 and the condyles 100 at the second end 500 can be provided with a groove 120, and further, the outer surface of the condyle 100 at the middle position can also be provided with a groove 120 to further improve the bonding strength between the snake bone skin and the condyle 100.
[0062] Furthermore, the groove 120 surrounds the outer surface of the condyle 100 along the circumference of the condyle 100, so that the groove 120 is an annular groove. In the embodiment where the snake bone skin is wound and fixed by a wire, the annular groove 120 can provide a location for the winding position of the wire, and the wall surface of the groove 120 can limit the sliding of the wire, so as to reduce the difficulty of winding the wire and the possibility of the wire slipping.
[0063] As another improvement of the above scheme, each joint 100 and the connecting rib 200 are integrally formed by injection molding. Both the joint 100 and the connecting rib 200 can be selected from conventional plastic or rubber materials in the art, specifically materials with good bending flexibility such as polypropylene or nylon, so as to have good bending characteristics while achieving integral injection molding. In addition, the injection molding method can make the thickness of each joint 100 and the connecting rib 200 thinner, for example, the thickness can be controlled between 0.25 and 0.6 mm, so that under the same joint 100 volume condition, the first hole 110 can have a larger aperture to facilitate the insertion of the clamp channel tube.
[0064] In order to further improve the structural strength of the endoscope snake 10, a reinforcing rib 160 is further provided inside the condyle 100. The structural strength of the reinforcing rib 160 is greater than that of the condyle 100. The reinforcing rib 160 can enhance the structural strength of the condyle 100 and further improve the overall structural strength of the endoscope snake 10. On the other hand, in the embodiment where the second hole 150 is connected to the first hole 110, the reinforcing rib 160 can partially close the connecting opening between the second hole 150 and the first hole 110 to limit the traction wire and reduce the probability of the traction wire being separated from the second hole 150.
[0065] Specifically, the interior of the condyle 100 should be understood as the interior of the wall of the condyle 100 surrounding the first hole 110, rather than being located in the first hole 110. In the embodiment where the condyle 100 and the connecting rib 200 are integrally formed by injection molding, the reinforcing rib 160 can be set at a set position of the tooling before injection molding, so that when the condyle 100 is injection molded, the reinforcing rib 160 is located at the set position, and after injection molding, the wall of the condyle 100 is covered with the reinforcing rib 160. Alternatively, in the embodiment where the reinforcing rib 160 is injection molded, a reserved hole can be set on the wall of the condyle 100, and the reinforcing rib 160 can be injection molded through the reserved hole, so that the reinforcing rib 160 is molded inside the wall of the condyle 100.
[0066] The material of the reinforcing rib 160 can be selected from plastics (ABS resin, nylon, polyphenylene sulfide, polycarbonate plastic, etc.) or metals (iron, steel, alloy steel, etc.) with high structural strength, as long as the structural strength is higher than that of the material of the condyle 100. For example, in some embodiments, the reinforcing rib 160 is selected from steel, and the material of the condyle 100 is selected from polypropylene.
[0067] The reinforcing rib 160 surrounds at least a portion of the first hole 110 along the circumference of the first hole 110 to ensure sufficient reinforcement effect, wherein a plurality of arc-shaped reinforcing ribs 160 may be evenly arranged along the circumference of the first hole 110, or a single annular reinforcing rib 160 may surround the circumference of the first hole 110 to provide uniform support to the joint 100.
[0068] The ratio of the size of the reinforcing rib 160 in the first direction to the size of the condyle 100 in the first direction is H, which satisfies 1 / 4<H<1 / 2. By controlling the ratio of the size of the reinforcing rib 160 to the size of the condyle 100 in the first direction to be between 1 / 4 and 1 / 2, it is possible to ensure that the reinforcing rib 160 has a sufficient size to reinforce the condyle 100, and control the production cost of the endoscope snake 10. Specifically, H can be selected to be 1 / 4, 1 / 3, 1 / 2 or any other value between 1 / 4 and 1 / 2.
[0069] The reinforcing rib 160 can be disposed at the middle of the condyle 100 in the first direction, so that the reinforcing rib 160 can support the condyle 100 more evenly.
[0070] The endoscope according to the embodiment of the utility model includes the endoscope snake bone 10 in the above embodiment. By applying the endoscope snake bone 10 of the embodiment of the present application, the bending amplitude of the adjacent bone joints 100 of the endoscope snake bone 10 near the first end 400 is increased to facilitate observation of a larger angle and range; the bending amplitude of the adjacent bone joints 100 near the second end 500 can be reduced to prevent the endoscope from contacting and damaging human tissue. And the structural strength of each connecting rib 200 can be adaptively improved to reduce the probability of the connecting rib 200 breaking during the use of the endoscope, ensuring the normal use of the endoscope and extending its service life.
[0071] Specifically, the endoscope includes a traction wire, and the joints 100 of the endoscope snake bone 10 are provided with a plurality of second holes 150 extending along the first direction, and the second holes 150 of adjacent joints 100 correspond one-to-one in the first direction, and the plurality of second holes 150 corresponding one-to-one in the first direction of each joint 100 define a penetration channel, and the traction wire is penetrated in the penetration channel along the first direction. The traction wire is located at one end outside the second end 500, and can be converged by a convergence device such as a hand wheel, so as to facilitate the traction control of each traction wire.
[0072] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
Claims
1. Endoscopic snake bone, characterized in that, include: A plurality of bone joints, each of which is sequentially spaced along a first direction, each of which is provided with a first hole extending along the first direction, and each of the first holes of each of the bone joints corresponds to the other in the first direction; A plurality of connecting ribs, wherein the connecting ribs connect two end surfaces of adjacent condyles facing each other so that the adjacent condyles can rotate relative to each other; The end surfaces of the adjacent bone joints facing each other are respectively provided with a first surface and a second surface, and the angle between the first surface and the second surface gradually decreases along the first direction.
2. The endoscope snake bone according to claim 1, characterized in that: The endoscope snake bone has a first end and a second end opposite to each other in the first direction, the distance between the end faces of the connecting ribs near the first end opposite to each other in the second direction is X1, and the distance between the end faces of the connecting ribs near the second end opposite to each other in the second direction is X2, wherein the second direction is perpendicular to the first direction, and X1<X2; And / or, the spacing between the opposite end faces of the connecting rib near the first end in the third direction is Y1, and the spacing between the opposite end faces of the connecting rib near the second end in the third direction is Y2, wherein the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, and Y1<Y2.
3. The endoscope snake bone according to claim 2, characterized in that: The connecting ribs extend along the circumference of the condyle, wherein along the first direction, from the first end to the second end, the extension distance of each connecting rib gradually increases.
4. The endoscope snake bone according to claim 2, characterized in that: The endoscope snake bone also includes a reinforcing rib, the structural strength of the reinforcing rib is greater than that of the bone joint, and the reinforcing rib is arranged inside the bone joint.
5. The endoscope snake according to claim 4, characterized in that: The reinforcing rib surrounds at least a portion of the first hole along the circumference of the first hole, and a ratio of a size of the reinforcing rib in the first direction to a size of the condyle in the first direction is H, satisfying 1 / 4≤H≤1 / 2.
6. The endoscope snake according to claim 2, characterized in that: At least one of the outer surface of the condyle located at the first end and the outer surface of the condyle located at the second end is provided with a groove, and the groove is used to fix the snake bone skin or a fixing piece.
7. The endoscope snake according to claim 1, characterized in that: The condyle is provided with a plurality of second holes penetrating along the first direction, the second holes of adjacent condyles correspond one to one in the first direction, and in the same condyle, at least two second holes are located on the same side of the condyle in the third direction.
8. The endoscope snake according to claim 1, characterized in that: The condyle is provided with a second hole for passing a traction wire, and the second holes of adjacent condyles correspond one to one in the first direction; the condyle has an outer wall and an inner wall, the inner wall defines the first hole, and the second hole is located between the outer wall and the inner wall.
9. The endoscope snake according to claim 1, characterized in that: The joint is provided with a plurality of second holes extending along the first direction, the second holes are used for passing traction wires, the second holes of adjacent joints correspond one to one in the first direction, wherein the connecting ribs and the second holes are staggered in the circumferential direction of the joint.
10. An endoscope, characterized in that include: The endoscopic snake bone according to any one of claims 1 to 9.