CN116407069A - An active bending segment and endoscope - Google Patents

Abstract

Translated fromChinese

本发明公开了一种主动弯曲段和内窥镜，属于医疗器械技术领域。主动弯曲段的结构包括了管体，管体的管壁设置有螺旋缝，在相邻两个由螺旋缝划分的螺旋单元中，其中一者设置枢转凸起，另一者设置多个深度各不相同的枢转槽。通过将枢转凸起与不同的枢转槽枢转连接形成枢转部，使得相邻两个螺旋单元之间的螺旋缝的宽度发生改变，从而通过调整螺旋缝的宽度实现对主动弯曲段整体的极限弯曲角度的调整。

The invention discloses an active bending section and an endoscope, belonging to the technical field of medical instruments. The structure of the active bending section includes a pipe body. The wall of the pipe body is provided with a spiral seam. In two adjacent spiral units divided by the spiral seam, one of them is provided with a pivoting protrusion, and the other is provided with multiple depths. Pivot slots vary. By pivotally connecting the pivoting protrusions with different pivoting grooves to form a pivoting part, the width of the spiral seam between two adjacent spiral units is changed, so that the overall active bending section can be adjusted by adjusting the width of the spiral seam. The adjustment of the limit bending angle.

Description

Translated fromChinese

一种主动弯曲段和内窥镜An active bending segment and endoscope

技术领域technical field

本发明涉及医疗器械技术领域，尤其涉及一种主动弯曲段和内窥镜。The invention relates to the technical field of medical instruments, in particular to an active bending section and an endoscope.

背景技术Background technique

内窥镜是一种常用的医疗器械，是能够直接进入人体自然管道的检查器械，可为医生提供充分的诊断信息以治疗疾病。内窥镜的主动弯曲段可经人体腔道或手术切口进入人体内，并在人体内根据移动的路径做出适应性的弯曲，以达到病灶处，同时也能够在牵引绳的控制下，实现主动弯曲。Endoscope is a commonly used medical device, an inspection device that can directly enter the natural pipeline of the human body, and can provide doctors with sufficient diagnostic information to treat diseases. The active bending section of the endoscope can enter the human body through the human cavity or surgical incision, and make adaptive bending in the human body according to the moving path to reach the lesion. At the same time, under the control of the traction rope, it can realize Active bending.

对于不同类型的内窥镜，其主动弯曲段所需的极限弯曲角度也不尽相同。但是，目前相关主动弯曲段的极限弯曲角度均在设计时就已经确定，即对于极限弯曲角度需求不同的主动弯曲段，需要单独的进行生产制造，市面上并不存在可适应不同极限弯曲角度的主动弯曲段。For different types of endoscopes, the required limit bending angles of the active bending sections are also different. However, at present, the limit bending angles of relevant active bending sections have been determined at the time of design, that is, active bending sections with different requirements for limit bending angles need to be manufactured separately, and there are no products on the market that can adapt to different limit bending angles. Active bending segment.

因此，设计一种能够调整极限弯曲角度的主动弯曲段，是本领域技术人员亟待解决的技术问题。Therefore, designing an active bending section capable of adjusting the limit bending angle is a technical problem to be solved urgently by those skilled in the art.

发明内容Contents of the invention

本发明公开一种主动弯曲段和内窥镜，以解决相关技术中的主动弯曲段存在的极限弯曲角度无法调整的技术问题。The invention discloses an active bending section and an endoscope to solve the technical problem that the limit bending angle of the active bending section in the related art cannot be adjusted.

为了解决上述问题，本发明采用下述技术方案：In order to solve the above problems, the present invention adopts the following technical solutions:

本发明提供了一种主动弯曲段，该主动弯曲段的结构包括：The present invention provides an active bending section, the structure of which includes:

管体，所述管体的管壁上设置有螺旋缝，所述螺旋缝将所述管体划分为多个螺旋单元，相邻两个所述螺旋单元通过枢转部相对转动弯曲；A pipe body, the pipe wall of the pipe body is provided with a spiral slit, and the spiral slit divides the pipe body into a plurality of helical units, and two adjacent helical units are relatively rotated and bent by the pivoting part;

在相邻两个所述螺旋单元中，其中一者设置有枢转凸起，另一者设置有多个枢转槽，所述枢转槽的深度各不相同，所述枢转凸起被配置为可与任一枢转槽枢转连接形成枢转部，以调整相邻两个所述螺旋单元之间的螺旋缝的宽度。Among the two adjacent spiral units, one of them is provided with a pivoting protrusion, and the other is provided with a plurality of pivoting slots, the depths of the pivoting slots are different, and the pivoting protrusions are formed by It is configured to be pivotally connected with any pivoting slot to form a pivoting portion, so as to adjust the width of the spiral seam between two adjacent spiral units.

作为可选的，为了更好的实现本申请，沿第一螺旋方向，多个所述枢转槽的深度依次减小，当所述枢转凸起沿第一螺旋方向移动并与不同所述枢转槽适配时，相邻两个所述螺旋单元之间的螺旋缝的宽度逐渐增大。As an option, in order to better realize the present application, along the first helical direction, the depths of the plurality of pivoting grooves decrease sequentially, when the pivoting protrusion moves along the first helical direction and differs from the When the pivoting slots are matched, the width of the helical seam between two adjacent helical units increases gradually.

作为可选的，为了更好的实现本申请，所述枢转槽的底部为圆弧槽，所述枢转凸起的端部为圆弧凸起，所述圆弧凸起可插入所述圆弧槽中。As an option, in order to better realize the present application, the bottom of the pivoting groove is an arc groove, the end of the pivoting protrusion is an arc protrusion, and the arc protrusion can be inserted into the in the arc groove.

作为可选的，为了更好的实现本申请，所述圆弧槽为劣弧槽，所述圆弧槽的直径与所述圆弧凸起的直径相适配。As an option, in order to better realize the present application, the arc groove is a minor arc groove, and the diameter of the arc groove matches the diameter of the arc protrusion.

作为可选的，为了更好的实现本申请，所述枢转槽与所述螺旋缝的缝壁圆弧过渡连接。As an option, in order to better realize the present application, the pivotal groove is connected with the circular arc transition of the slit wall of the spiral slit.

作为可选的，为了更好的实现本申请，所述枢转槽具有沿所述第一螺旋方向的第一端和第二端，所述枢转槽的第一端设置有限位部，所述限位部限制所述枢转凸起沿与所述第一螺旋方向相反的方向移动。As an option, in order to better realize the present application, the pivoting groove has a first end and a second end along the first helical direction, and the first end of the pivoting groove is provided with a limiting portion, so The limiting portion restricts the pivoting protrusion from moving in a direction opposite to the first helical direction.

作为可选的，为了更好的实现本申请，所述限位部朝向所述枢转槽的一侧面为第一弧面，所述第一弧面与所述枢转部枢转配合。Optionally, in order to better implement the present application, a side of the limiting portion facing the pivot slot is a first arc surface, and the first arc surface is pivotally matched with the pivot portion.

作为可选的，为了更好的实现本申请，当所述限位部位于同一螺旋单元中相邻两个所述枢转槽之间时，所述限位部的另一侧为第二弧面，所述第二弧面与螺旋缝的缝壁圆弧过渡连接。As an option, in order to better realize the present application, when the limiting part is located between two adjacent pivoting slots in the same helical unit, the other side of the limiting part is a second arc surface, and the second arc surface is transitionally connected with the slit wall arc of the spiral slit.

作为可选的，为了更好的实现本申请，相邻两个所述螺旋单元的相对两侧均设置有所述枢转部。As an option, in order to better realize the present application, the pivoting parts are provided on opposite sides of two adjacent spiral units.

本发明还提供了一种内窥镜，该内窥镜的结构包括手柄和上述的主动弯曲段，所述主动弯曲段连接于所述手柄上。The present invention also provides an endoscope. The structure of the endoscope includes a handle and the above-mentioned active bending section, and the active bending section is connected to the handle.

本发明采用的技术方案能够达到以下有益效果：The technical scheme adopted in the present invention can achieve the following beneficial effects:

本发明提供的主动弯曲段，通过在相邻两个螺旋单元中的一者设置枢转凸起，另一者设置多个枢转槽，并通过将枢转槽的深度设计为各不相同，使得枢转凸起在与任一枢转槽枢转连接形成枢转部之后，螺旋缝的宽度也会各部相同，从而达到了调整相邻两个螺旋单元之间螺旋缝的宽度的作用，由于相邻两个螺旋单元在以枢转部为转动中心弯曲的最大角度会受到螺旋缝的宽度的限制，因此，调整相邻两个螺旋单元之间螺旋缝的宽度能够调整任意相邻两个螺旋单元的最大弯曲角度，管体可以看做是由划分的多个螺旋单元依次连接形成，因此，也实现了对主动弯曲段整体的极限弯曲角度的调整。In the active bending section provided by the present invention, one of the two adjacent helical units is provided with a pivoting protrusion, and the other is provided with a plurality of pivoting grooves, and by designing the depths of the pivoting grooves to be different, After the pivoting protrusion is pivotally connected with any pivoting groove to form a pivoting part, the width of the spiral seam will be the same at each part, thereby achieving the effect of adjusting the width of the spiral seam between two adjacent spiral units. The maximum bending angle of the two helical units with the pivot part as the center of rotation will be limited by the width of the helical slit. Therefore, adjusting the width of the helical slit between two adjacent helical units can adjust the distance between any two adjacent helical units. For the maximum bending angle, the pipe body can be regarded as being formed by sequentially connecting multiple divided helical units. Therefore, the adjustment of the overall limit bending angle of the active bending section is also realized.

附图说明Description of drawings

为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

图1是主动弯曲段在初始状态下的结构示意图；Fig. 1 is a schematic diagram of the structure of the active bending section in the initial state;

图2是主动弯曲段在调整后的状态下的结构示意图；Fig. 2 is a structural schematic diagram of the active bending section in an adjusted state;

图3是图1中圆弧凸起和圆弧槽的结构示意图；Fig. 3 is a structural schematic diagram of the arc protrusion and the arc groove in Fig. 1;

图4是现有技术中主动弯曲段的极限弯曲角度的状态的示意图；Fig. 4 is a schematic diagram of the state of the limit bending angle of the active bending section in the prior art;

图5是限位部的结构示意图；Fig. 5 is a structural schematic diagram of a limiting part;

图6是图1的另一视角的结构示意图；Fig. 6 is a structural schematic diagram of another viewing angle of Fig. 1;

图7是内窥镜的结构示意图。Fig. 7 is a schematic structural view of the endoscope.

图中：In the picture:

100-管体；110-螺旋单元；100-tube body; 110-spiral unit;

200-螺旋缝；210-第一缝壁；220-第二缝壁；200-spiral seam; 210-first seam wall; 220-second seam wall;

300-枢转部；310-枢转凸起；311-圆弧凸起；320-枢转槽；321-圆弧槽；322-第一端；323-第二端；300-pivot; 310-pivot projection; 311-arc projection; 320-pivot groove; 321-arc groove; 322-first end; 323-second end;

400-限位部；410-第一弧面；420-第二弧面；400-limiting part; 410-the first arc surface; 420-the second arc surface;

500-手柄。500 - handle.

具体实施方式Detailed ways

为使本发明的目的、技术方案和优点更加清楚，下面将对本发明的技术方案进行详细的描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所得到的所有其它实施方式，都属于本发明所保护的范围。In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," etc. distinguish Objects are generally of one type, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

下面结合附图1至图6，通过具体的实施例及其应用场景对本申请实施例提供的主动弯曲段进行详细地说明。The active bending section provided by the embodiment of the present application will be described in detail below through specific embodiments and application scenarios with reference to accompanying drawings 1 to 6 .

本实施例提供的主动弯曲段的结构包括管体100，管体100内具有轴向管孔，该管孔可容纳线束、牵引绳以及器械钳等需要穿过主动弯曲段的组件或部件。管体100的管壁上设置有螺旋缝200，螺旋缝200贯穿管体100的壁厚，以使管体100通过螺旋缝200形成螺旋管，拧动所述管体100，则能够使得螺旋缝200的宽度发生变化。螺旋缝200将管体100划分为多个螺旋单元110，可以理解的是，螺旋缝200并没有将管体100切断为相互独立的螺旋单元110，本实施例的螺旋单元110是以螺旋缝的宽度以及螺旋角度等作为参照人为划分的，一个螺旋单元110在管体100径向所在平面的投影正好形成一个圆。可以将具有螺旋缝200的管体100看做是由多个螺旋单元110依次连接形成的。螺旋缝200设置在管体100上之后，使得管体100上具有相对的第一缝壁210和第二缝壁220，第一缝壁210和第二缝壁220之间形成螺旋缝200。The structure of the active bending section provided in this embodiment includes atubular body 100 with an axial hole in thetubular body 100, which can accommodate components or parts that need to pass through the active bending section, such as wire harnesses, traction ropes, and instrument forceps. The pipe wall of thepipe body 100 is provided with aspiral seam 200, thespiral seam 200 runs through the wall thickness of thepipe body 100, so that thepipe body 100 forms a spiral pipe through thespiral seam 200, and thepipe body 100 can be twisted to make the spiral seam The width of 200 changes. Thespiral seam 200 divides thepipe body 100 into a plurality ofspiral units 110. It can be understood that thespiral seam 200 does not cut thepipe body 100 into independentspiral units 110. Width and helix angle are artificially divided as a reference, and the projection of ahelix unit 110 on the radial plane of thepipe body 100 just forms a circle. Thepipe body 100 with thespiral seam 200 can be regarded as formed by sequentially connecting a plurality ofspiral units 110 . After thespiral seam 200 is disposed on thepipe body 100 , thepipe body 100 has oppositefirst seam walls 210 andsecond seam walls 220 , and thespiral seam 200 is formed between thefirst seam walls 210 and thesecond seam walls 220 .

需要说明的是，本实施例中的螺旋缝200是通过将管体100通过激光切割形成，激光切割后形成的管体100为初始状态的管体100。当向所述管体100施加沿着第一螺旋方向的拧动力时，能够使得螺旋缝200的宽度增大，当向管体100施加沿着与第一螺旋方向相反的第二螺旋方向的拧动力，能够使得螺旋缝200的宽度减小。当取消施加在所述管体100上的拧动力时，则管体100能够回复至初始状态。It should be noted that thespiral seam 200 in this embodiment is formed by cutting thetube body 100 by laser, and thetube body 100 formed after laser cutting is thetube body 100 in the initial state. When a twisting force along the first helical direction is applied to thetubular body 100, the width of thespiral seam 200 can be increased; Power can reduce the width of thespiral seam 200 . When the twisting force applied to thetube body 100 is canceled, thetube body 100 can return to the original state.

如图1和图2所示，在任意相邻两个螺旋单元110中，其中一者设置有枢转凸起310，另一者设置有多个枢转槽320。枢转凸起310设置在第一缝壁210上，多个枢转槽320则设置在相对应的第二缝壁220上，且多个枢转槽320沿螺旋的螺旋方向依次设置。每个枢转槽320的槽底所在的深度均不相同。这里的深度指的是枢转槽320的槽口至槽底的距离。当向管体100施加拧动力时，枢转凸起310能够沿着螺旋缝200以第一螺旋方向移动，从而与任一的枢转槽320枢转连接配合。当枢转凸起310插接在枢转槽320中以后，枢转凸起310和枢转槽320能够形成枢转部300。因枢转槽320的位置不同，枢转凸起310与不同的枢转槽320所形成的枢转部300的位置也会发生相应的变化。两个相邻的螺旋单元110则能够在外力作用下通过枢转部300实现相对转动，从而使管体100发生弯曲。需要说明的是，这里的外力可以是人体的自然肠道对管道的导向作用力，或者是设置在管道上的牵引绳的拉力。相邻两个螺旋单元110在以枢转部300为旋转弯曲中心弯曲时，相邻两个螺旋单元110的第一缝壁210和第二缝壁220之间的间距会同步发生变化，螺旋缝200的宽度越宽，则相邻两个螺旋单元110能够被弯曲的角度越大，反之，螺旋缝200的宽度越窄，则相邻两个螺旋单元110能够被弯曲的角度越小。如图3所示，当管体100弯曲方向的内侧的螺旋缝200被挤压至消失时，则说明主动弯曲段弯曲至极限弯曲角度。As shown in FIG. 1 and FIG. 2 , among any two adjacenthelical units 110 , one of them is provided with a pivotingprotrusion 310 , and the other is provided with a plurality of pivotingslots 320 . The pivotingprotrusion 310 is disposed on thefirst slit wall 210 , and the plurality of pivotinggrooves 320 are disposed on the correspondingsecond slit wall 220 , and the plurality of pivotinggrooves 320 are disposed sequentially along the helical direction of the helix. The bottom of each pivotingslot 320 has a different depth. The depth here refers to the distance from the opening of thepivoting slot 320 to the bottom of the slot. When a twisting force is applied to thepipe body 100 , thepivot protrusion 310 can move along thespiral seam 200 in a first helical direction, so as to pivotally connect with anypivot groove 320 . After the pivotingprotrusion 310 is plugged into the pivotingslot 320 , the pivotingprotrusion 310 and thepivoting slot 320 can form a pivotingportion 300 . Due to the different positions of the pivotingslots 320 , the positions of the pivotingportion 300 formed by the pivotingprotrusion 310 and thedifferent pivoting slots 320 will also change accordingly. Two adjacenthelical units 110 can achieve relative rotation through the pivotingportion 300 under the action of an external force, so that thetube body 100 is bent. It should be noted that the external force here may be the guiding force of the human body's natural intestinal tract to the pipeline, or the pulling force of the traction rope arranged on the pipeline. When twoadjacent spiral units 110 are bent with thepivot portion 300 as the center of rotation and bending, the distance between thefirst slit wall 210 and thesecond slit wall 220 of the twoadjacent spiral units 110 will change synchronously, and the spiral seam The wider the width of theslit 200 , the larger the angle at which two adjacenthelical units 110 can be bent; on the contrary, the narrower the width of the spiral slit 200 , the smaller the angle at which two adjacenthelical units 110 can be bent. As shown in FIG. 3 , when theinner spiral seam 200 in the bending direction of thepipe body 100 is squeezed to disappear, it means that the active bending section is bent to a limit bending angle.

由于向管体100施加拧动力之后，管体100上的螺旋缝200的宽度会发生变化，而当枢转凸起310与任一枢转槽320配合之后，枢转凸起310和配合的枢转槽320能够起到限位作用，限制管体100恢复至初始状态，使得螺旋缝200保持在当前的宽度，从而实现了对管体100上螺旋缝200的宽度调整。在将整个管体100中所有的相邻的螺旋单元110的相同位置上均设置上述的枢转部300和枢转槽320，则能够实现对整个管体100的螺旋缝200的宽度同步调整，从而实现了对主动弯曲段的完全角度的调整。并且，在取消掉施加的拧动力之后，在管体的回弹力作用下，枢转槽320能够保持与枢转凸起310的接触。After the twisting force is applied to thepipe body 100, the width of thespiral seam 200 on thepipe body 100 will change, and when the pivotingprotrusion 310 cooperates with any pivotinggroove 320, the pivotingprotrusion 310 and the matched pivotinggroove 320 can play a position-limiting role, restricting the return of thepipe body 100 to the original state, so that thespiral seam 200 remains at the current width, thereby realizing the adjustment of the width of thespiral seam 200 on thepipe body 100 . All the above-mentionedpivoting parts 300 and pivotinggrooves 320 are provided at the same positions of all the adjacenthelical units 110 in theentire pipe body 100, so that the synchronous adjustment of the width of thespiral seam 200 of theentire pipe body 100 can be realized, Thereby, the complete angle adjustment of the active bending section is realized. Moreover, after canceling the applied twisting force, the pivotingslot 320 can keep in contact with the pivotingprotrusion 310 under the action of the elastic force of the tube body.

需要说明的时，在本实施例中，枢转槽320和枢转凸起310均由螺旋缝200的路径形成。在采用激光时，则枢转槽320和枢转凸起310以及螺旋缝200均通过激光一次性切割成型，简化了主动弯曲段的加工工序。另外，当枢转凸起310与不同的枢转槽320配合形成枢转部300时，枢转部300的位置也会发生相应的变化。在将主动弯曲段应用至内窥镜中时，则可以通过将牵引绳创设于管孔内，并在管体100的两端固定牵引绳的方式将牵引绳固定于主动完全段上，当然，还可以在每个螺旋单元110上单独的对牵引绳进行固定。牵引绳的固定可以通过可拆卸的固定件实现，也可以通过在管体100上冲压形成绳孔实现，对此，本实施例对牵引绳的固定方式和固定位置不做具体的限制。It should be noted that, in this embodiment, both thepivot groove 320 and thepivot protrusion 310 are formed by the path of thespiral seam 200 . When a laser is used, the pivotinggroove 320, the pivotingprotrusion 310, and thespiral seam 200 are all cut and shaped by laser at one time, which simplifies the processing procedure of the active bending section. In addition, when the pivotingprotrusion 310 cooperates withdifferent pivoting slots 320 to form the pivotingportion 300 , the position of the pivotingportion 300 will also change accordingly. When the active bending section is applied to the endoscope, the traction rope can be fixed on the active complete section by creating the traction rope in the tube hole and fixing the traction rope at both ends of thetube body 100. Of course, It is also possible to separately fix the traction rope on eachhelical unit 110 . The traction rope can be fixed by a detachable fixing piece, or by punching and forming a rope hole on thepipe body 100 . In this regard, this embodiment does not specifically limit the way and position of the traction rope.

在对枢转槽320和枢转部300一次成型时，在切割形成枢转凸起310的同时，也会直接形成一个与该枢转凸起310枢转配合的枢转槽320，这一枢转槽320所在的位置则被设置为初始位置，枢转凸起310与该枢转槽320枢转配合时的状态被称为初始状态，图1中的枢转槽320和枢转凸起310所在的位置则为初始位置，此时的螺旋缝200为经过切割所形成的自然缝。When forming thepivot groove 320 and thepivot part 300 at one time, while cutting and forming thepivot protrusion 310, apivot groove 320 that pivotally fits with thepivot protrusion 310 will also be directly formed. The position where the pivotinggroove 320 is located is then set as the initial position, and the state when the pivotingprojection 310 pivotally fits with the pivotinggroove 320 is called the initial state. The pivotinggroove 320 and the pivotingprojection 310 in FIG. 1 The current position is the initial position, and thespiral seam 200 at this time is a natural seam formed by cutting.

另外，还需要提出的是，通过上述主动弯曲段的结构能够实现对管体100的极限弯曲角度的调整，在生产过程中，则能够根据不同型号或使用需求的内窥镜，选择行的将管体100调整至所需的极限弯曲角度，并通过在管体100外设置一层蒙皮(附图中未示出)形成主动弯曲段的主体结构。从而实现了一个零部件适用于多种不同产品的应用，进而可以提高管体100的适用性和实用性。In addition, it needs to be pointed out that the limit bending angle of thetubular body 100 can be adjusted through the structure of the above-mentioned active bending section. Thepipe body 100 is adjusted to the required limit bending angle, and a main structure of the active bending section is formed by arranging a layer of skin (not shown in the drawings) outside thepipe body 100 . In this way, it is realized that one part is suitable for the application of many different products, thereby improving the applicability and practicability of thepipe body 100 .

进一步的，为了更方便的对枢转槽320进行调整。本实施例中将不同深度的枢转槽320进行了相应的设置。具体的，沿着上述的第一螺旋方向，多个枢转槽320的开设深度依次减小(也可以称之为深度依次变浅)。由于枢转凸起310的凸出形状不会发生变化，而当枢转槽320的深度变小之后，枢转凸起310移动至枢转槽320槽底的距离减小，从而使得枢转槽320与枢转凸起310配合后，螺旋缝200的宽度增大。当枢转凸起310沿着第一螺旋方向移动并与不同的枢转槽320适配时，则相邻两个螺旋单元110之间的螺旋缝200的宽度也逐渐增大。在一方面，能够在对主动弯曲段的极限弯曲角度进行调整时，能够更加明确管体100拧动的角度和方向。在另一方面，还能够保证枢转凸起310与任一枢转槽320配合时，枢转凸起310的前端均能够与枢转槽320的槽面相接触。Further, the pivotingslot 320 can be adjusted more conveniently. In this embodiment, the pivotingslots 320 with different depths are set accordingly. Specifically, along the above-mentioned first helical direction, the depths of the plurality of pivotingslots 320 are successively reduced (also referred to as the depths are successively shallower). Since the protruding shape of the pivotingprotrusion 310 does not change, when the depth of the pivotinggroove 320 becomes smaller, the distance from the pivotingprotrusion 310 to the bottom of the pivotinggroove 320 decreases, so that the pivoting groove After the 320 cooperates with the pivotingprotrusion 310, the width of thespiral seam 200 increases. When the pivotingprotrusion 310 moves along the first helical direction and matches withdifferent pivoting slots 320 , the width of thehelical slot 200 between two adjacenthelical units 110 also increases gradually. On the one hand, when adjusting the limit bending angle of the active bending section, the twisting angle and direction of thetubular body 100 can be more clearly defined. On the other hand, it can also ensure that when the pivotingprotrusion 310 cooperates with any pivotinggroove 320 , the front end of the pivotingprotrusion 310 can contact the groove surface of the pivotinggroove 320 .

需要说明的是，在沿着第一螺旋方向将多个枢转槽320的开设深度依次减小设置之后，图1中的处于初始位置的、与枢转凸起310和与之配合的枢转槽320的深度则为多个枢转槽320中深度最深的一个。It should be noted that after the depths of the plurality ofpivot grooves 320 are successively reduced along the first helical direction, the initial position in FIG. The depth of thegroove 320 is the deepest one among the plurality of pivotinggrooves 320 .

枢转槽320与枢转凸起310的一种具体配合结构如图4所示，枢转槽320的底部为圆弧槽321，枢转凸起310的端部为圆弧凸起311，圆弧凸起311可插入圆弧槽321中，通过圆弧凸起311和圆弧槽321实现转动过程中的面接触和导向，实现枢转槽320与枢转凸起310的枢转连接配合。A specific matching structure of the pivotinggroove 320 and the pivotingprotrusion 310 is shown in Figure 4, the bottom of the pivotinggroove 320 is anarc groove 321, the end of the pivotingprotrusion 310 is anarc protrusion 311, and the circle Thearc protrusion 311 can be inserted into thearc groove 321 , through thearc protrusion 311 and thearc groove 321 , surface contact and guidance during rotation can be realized, and the pivotal connection and cooperation between thepivot groove 320 and thepivot protrusion 310 can be realized.

需要说明的是，在本实施例中，整个枢转槽320均为圆弧槽321，整个枢转凸起310均为圆弧凸起311。在一些可选实施方式中，枢转槽320的槽口与圆弧槽321之间具有一定的间距，枢转凸起310上的圆弧凸起311与枢转凸起310的根部之间具有一定的间距。这样设置，能够使得枢转槽320与枢转凸起310能够具有更深的配合空间，在一定程度上降低了枢转槽320和枢转凸起310配合之后发生脱离的现象。It should be noted that, in this embodiment, theentire pivoting groove 320 is anarc groove 321 , and theentire pivoting protrusion 310 is anarc protrusion 311 . In some optional embodiments, there is a certain distance between the notch of the pivotinggroove 320 and thearc groove 321, and there is a distance between thearc protrusion 311 on the pivotingprotrusion 310 and the root of the pivotingprotrusion 310. a certain distance. Such arrangement can make the pivotinggroove 320 and the pivotingprotrusion 310 have a deeper matching space, and to a certain extent reduce the disengagement phenomenon after the pivotinggroove 320 and the pivotingprotrusion 310 are matched.

进一步的，圆弧槽321为劣弧槽，以减少圆弧凸起311离开枢转槽320的距离，使得在需要对主动弯曲段的极限弯曲角度进行调整时，能够更加方便的将枢转凸起310由一个枢转槽320移动至另一个枢转槽320中。Further, thearc groove 321 is a inferior arc groove to reduce the distance between thearc protrusion 311 and thepivot groove 320, so that when the limit bending angle of the active bending section needs to be adjusted, the pivot protrusion can be more conveniently adjusted. Thelifter 310 moves from onepivot slot 320 to theother pivot slot 320 .

在此基础上，为了进一步的方便的将枢转凸起310由一个枢转槽320移动至另一个枢转槽320中，本实施例还将枢转槽320与螺旋缝200的缝壁之间的连接处采用圆弧过渡连的方式形成第一过渡部。第一过渡部的圆弧直径大小可以根据具体的需要进行选择性的调整。On this basis, in order to move the pivotingprojection 310 from one pivotinggroove 320 to theother pivoting groove 320 for further convenience, this embodiment also provides a gap between the pivotinggroove 320 and the wall of thespiral seam 200 . The connection of the first transition part is formed by a circular arc transition connection. The arc diameter of the first transition portion can be selectively adjusted according to specific requirements.

在另一方面，由于将管体100拧动之后，管体100会产生恢复至初始状态的回弹力。因此，为了降低在回弹过程中，枢转凸起310与配合的枢转槽320之间发生脱离。本实施例还设置了限位部400对枢转凸起310进行限位，限制枢转凸起310杨与第一螺旋方向相反的方向(即第二螺旋方向)移动。On the other hand, after thetube body 100 is twisted, thetube body 100 will generate a rebound force to return to the original state. Therefore, in order to reduce the disengagement between the pivotingprotrusion 310 and thematching pivoting groove 320 during the rebounding process. In this embodiment, the limitingpart 400 is also provided to limit the pivotingprotrusion 310, and limit the movement of the pivotingprotrusion 310 in the direction opposite to the first helical direction (ie, the second helical direction).

具体的，枢转槽320具有第一端322和第二端323，第一端322和第二端323相互间隔，第一端322和第二端323之间限定出了枢转槽320的槽口。沿第一螺旋方向，第一端322和第二端323依次设置。限位部400则设置在枢转槽320的第一端322，限位部400凸出于枢转槽320第一端322所在的螺旋缝200的螺旋延伸线上，从而使得枢转凸起310往第二螺旋方向移动时需要越过限位部400，通过控制限位部400的高度，使管体100的回弹力不足以支撑枢转凸起310越过该限位部400，则能够实现对枢转凸起310的限位作用。Specifically, the pivotinggroove 320 has afirst end 322 and asecond end 323, thefirst end 322 and thesecond end 323 are spaced apart from each other, and the groove of the pivotinggroove 320 is defined between thefirst end 322 and thesecond end 323. mouth. Along the first helical direction, thefirst end 322 and thesecond end 323 are arranged in sequence. The limitingpart 400 is arranged on thefirst end 322 of the pivotinggroove 320, and the limitingpart 400 protrudes from the spiral extension line of thespiral seam 200 where thefirst end 322 of the pivotinggroove 320 is located, so that the pivotingprotrusion 310 When moving in the second helical direction, it is necessary to cross thelimit portion 400. By controlling the height of thelimit portion 400, the resilience of thepipe body 100 is not enough to support the pivotingprotrusion 310 to pass over thelimit portion 400, so that the pivoting can be realized. The limit function of turningprotrusion 310.

每个枢转槽320的第一端322均设置由一个上述的限位部400，并且，每个限位部400分别与该限位部400所在的枢转槽320相对应。Thefirst end 322 of each pivotingslot 320 is provided with one above-mentioned limitingportion 400 , and each limitingportion 400 is respectively corresponding to thepivoting slot 320 where the limitingportion 400 is located.

优选的，上述限位部400朝向对应的枢转槽320的一侧面为第一弧面410，在枢转槽320整个为圆弧槽321时，第一弧面410所在的圆心位于圆弧槽321所在的圆心上，且第一弧面410的直径与圆弧槽321的直径相同。以使得第一弧面410与圆弧槽321共同形成弧度更大的圆弧槽321A，第一弧面410与枢转部300能够起到枢转配合的效果。同时，第一弧面410与圆弧槽321连接在一起形成的更大的圆弧槽321A，与枢转槽320中的圆弧槽321相比，更大的圆弧槽321A的开口朝向更加偏向于第一螺旋方向，从而更进一步的降低枢转凸起310与该枢转槽320脱离的可能。Preferably, the side of the limitingportion 400 facing thecorresponding pivoting groove 320 is afirst arc surface 410, and when theentire pivoting groove 320 is anarc groove 321, the center of the circle where thefirst arc surface 410 is located is located in thearc groove 321 on the center of the circle, and the diameter of thefirst arc surface 410 is the same as the diameter of thearc groove 321 . In order to make thefirst arc surface 410 and thearc groove 321 jointly form an arc groove 321A with a larger radian, thefirst arc surface 410 and the pivotingportion 300 can achieve a pivotal cooperation effect. At the same time, thefirst arc surface 410 is connected with thearc groove 321 to form a larger arc groove 321A. Compared with thearc groove 321 in thepivot groove 320, the opening of the larger arc groove 321A is more It is biased towards the first helical direction, so as to further reduce the possibility of the pivotingprotrusion 310 detaching from the pivotinggroove 320 .

进一步的，在多个限位部400中，当限位部400为位于同一螺旋单元110中相邻两个枢转槽320之间的限位部400，则限位部400的另一侧为第二弧面420，且第二弧面420与螺旋缝200的缝壁圆弧过渡连接。Further, among the plurality of limitingparts 400, when the limitingpart 400 is the limitingpart 400 located between two adjacent pivotinggrooves 320 in thesame screw unit 110, the other side of the limitingpart 400 is Thesecond arc surface 420 , and thesecond arc surface 420 is transitionally connected with the slit wall of the spiral slit 200 .

基于上述的主动弯曲段，还需要提出的时，在本实施例中，相邻两个螺旋单元110的相对两侧均设置有枢转部300，两个相对的枢转部300连线限定了相邻两个螺旋单元110的转动方向。Based on the above-mentioned active bending section, when it needs to be mentioned, in this embodiment, pivotingparts 300 are provided on opposite sides of two adjacenthelical units 110, and the connecting line of two opposite pivotingparts 300 defines The rotation direction of twoadjacent spiral units 110 .

如图7所示，本申请实施例还提出了一种内窥镜，该内窥镜的结构包括了手柄500以及上述的主动弯曲段，主动弯曲段连接在手柄500上，通过手柄500上的控制机构主动弯曲段的弯曲幅度和弯曲方向进行控制。本申请实施例的内窥镜可以为支气管镜、肾盂镜、食道镜、胃镜、肠镜、耳镜、鼻镜、口腔镜、喉镜、阴道镜、腹腔镜、关节镜等，本申请实施例对内窥镜的种类不做具体限制。As shown in FIG. 7 , the embodiment of the present application also proposes an endoscope. The structure of the endoscope includes ahandle 500 and the above-mentioned active bending section. The active bending section is connected to thehandle 500 . The bending amplitude and bending direction of the active bending section of the control mechanism are controlled. The endoscope of the embodiment of the present application can be a bronchoscope, pyeloscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral mirror, laryngoscope, colposcope, laparoscope, arthroscope, etc. The kind of endoscope is not specifically limited.

需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention.

Claims (10)

1. An active bending section, comprising:

the pipe body is provided with a spiral seam on the pipe wall, the spiral seam divides the pipe body into a plurality of spiral units, and two adjacent spiral units are bent by relative rotation of the pivoting part;

one of the two adjacent spiral units is provided with a pivot protrusion, the other is provided with a plurality of pivot grooves, the depths of the pivot grooves are different, and the pivot protrusion is configured to be pivotally connected with any pivot groove to form a pivot part so as to adjust the width of a spiral gap between the two adjacent spiral units.

2. The active bending section of claim 1, wherein the depth of a plurality of said pivot grooves decreases in sequence in a first helical direction, the width of the helical slit between adjacent two of said helical elements gradually increasing as said pivot projections move in the first helical direction and adapt to different ones of said pivot grooves.

3. The active bending section of claim 1, wherein the bottom of the pivoting slot is an arcuate slot, and the end of the pivoting projection is an arcuate projection that is insertable into the arcuate slot.

4. The active bending section of claim 3, wherein the arcuate slot is a minor arcuate slot, the arcuate slot having a diameter that matches the diameter of the arcuate projection.

5. The active bending section of claim 1, wherein the pivot slot is in arcuate transition with a slot wall of the helical slot.

6. The active bending section of claim 2, wherein the pivot slot has a first end and a second end in the first helical direction, the first end of the pivot slot being provided with a stop that limits movement of the pivot boss in a direction opposite the first helical direction.

7. The active bending section according to claim 1, wherein a side of the limiting portion facing the pivoting groove is a first arc surface, and the first arc surface is pivotally matched with the pivoting portion.

8. The active bending section according to claim 7, wherein when the limiting part is positioned between two adjacent pivoting grooves in the same spiral unit, the other side of the limiting part is a second cambered surface, and the second cambered surface is in arc transition connection with a seam wall of the spiral seam.

9. Active bending section according to any one of claims 1-8, characterized in that the pivot is provided on opposite sides of two adjacent spiral units.

10. An endoscope comprising a handle and the active bending section of any one of claims 1-9, the active bending section being connected to the handle.

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