WO2019134269A1 - 一种用于一次性内窥镜的弯曲部 - Google Patents

一种用于一次性内窥镜的弯曲部 Download PDF

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WO2019134269A1
WO2019134269A1 PCT/CN2018/081006 CN2018081006W WO2019134269A1 WO 2019134269 A1 WO2019134269 A1 WO 2019134269A1 CN 2018081006 W CN2018081006 W CN 2018081006W WO 2019134269 A1 WO2019134269 A1 WO 2019134269A1
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wire
positioning ring
wire positioning
bending portion
pull wire
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PCT/CN2018/081006
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English (en)
French (fr)
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黎金树
王南冰
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珠海嘉润医用影像科技有限公司
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Publication of WO2019134269A1 publication Critical patent/WO2019134269A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00103—Constructional details of the endoscope body designed for single use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0057—Constructional details of force transmission elements, e.g. control wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/008—Articulations

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  • the present invention relates to the field of medical devices, and more particularly to a curved portion for a disposable endoscope.
  • the snake bone for endoscope is one of the important components of the endoscope, and it is located at the front end of the endoscope to form a curved portion, which is convenient for the lens to change direction in the human body.
  • the existing bending portion is made of a metal material, and a plurality of metal wire drawing locating rings are sequentially riveted or welded, and each of the wire locating ring has a concave portion on an outer wall thereof, and the wire is sequentially passed through the concave portions. Since the wire positioning ring is made of metal, its flexibility is not enough, and it is easy to produce sharp and rigid wrinkles, so that the cable cannot be pulled smoothly.
  • the present invention proposes a bending portion for a disposable endoscope that is simple to process and has higher reliability.
  • the present invention solves the above problems by the following technical means:
  • a bending portion for a disposable endoscope includes a plurality of wire positioning rings, and the wire positioning ring is a flexible material;
  • Each of the opposite side walls of each of the wire retaining rings is provided with a wire through hole extending through the side wall;
  • a plurality of the wire positioning loops are hinged end to end to form a bendable snake bone structure, and the wire piercings in the wire positioning ring are sequentially penetrated to form a cable passage located in the sidewall of the wire positioning ring;
  • One end surface of the wire positioning ring is provided with a notch, and the notch is a gap reserved for the relative rotation of the adjacent two wire positioning rings.
  • the axial line of the two wire piercings on the wire positioning ring and the axis line of the wire positioning ring are parallel to each other.
  • the axis line of the wire positioning ring intersects with the line connecting the two of the wire piercing axis lines.
  • each of the wire positioning rings has two lugs on one end, two lugs on the other end, and a round bar on each of the two ears, two lugs
  • Each of the upper ends is provided with a continuous perforation, and the two rods on the wire positioning ring are respectively inserted into the through holes of the two card holders on the adjacent wire positioning ring, and the round rods are in one-to-one correspondence with the through holes, that is, adjacent ones are realized.
  • the hinge of the two wire positioning rings is provided with a continuous perforation
  • an end surface of the cable positioning ring provided with a latch is provided with a notch
  • an end surface of the cable positioning ring provided with the latch seat is a flat surface
  • end surface of the cable positioning ring provided with the latch is a flat surface
  • end surface of the cable positioning ring with the latch seat is provided with a notch
  • the notch has a concave arc shape.
  • the wire positioning ring is made of medical plastic.
  • the present invention has the following advantages:
  • the invention adopts a flexible material to replace the traditional metal material, and at the same time reserves a bending gap, which greatly enhances the softness of the bending portion and makes the pulling operation more sensitive;
  • Each of the two wire passages accommodates a pull wire, which eliminates the structure of the recessed portion of the surface of the traditional metal bent portion through which the pull wire passes, so that the pull wire directly passes through the side wall, thereby greatly reducing the frequent entry and exit of the pull wire and the outer wall of the bent portion. Friction; due to the softness of the material of the wire positioning ring, it is difficult to be damaged due to frequent pulling during use, and the stability of use stability is obviously improved. On the other hand, if one or several wire positioning rings Detachment or damage does not affect the pulling of the cable, and the cable of the metal bending portion is not caught by a certain wire positioning ring.
  • FIG. 1 is a schematic structural view of a wire positioning ring of the present invention
  • Figure 2 is a cross-sectional view of the wire positioning ring of the present invention.
  • FIG. 3 is a schematic structural view of the connection of two adjacent wire positioning rings in the present invention.
  • Figure 4 is a cross-sectional view showing the connection of two adjacent wire positioning rings in the present invention.
  • Fig. 5 is a schematic view showing the structure of the present invention when it is bent.
  • first”, “second”, and “third” are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first”, “second”, and “third” may include one or more of the features, either explicitly or implicitly.
  • a group means two or two in the embodiments.
  • a bending portion for a disposable endoscope includes a plurality of wire positioning rings 1, and the wire positioning ring 1 is a flexible material;
  • Each of the opposite side walls 2 of each of the wire retaining ring 1 is provided with a wire through hole 3 extending through the side wall 2;
  • a plurality of the wire positioning ring 1 are hinged end to end to form a bendable snake bone structure, and the wire piercing holes 3 in the plurality of wire positioning rings 1 are sequentially penetrated to form a wire passage 4 located in the side wall 2 of the wire positioning ring 1, two Each of the cable passages 4 receives a pull wire, and one end of each of the pull wires is connected to the wire positioning ring 1 at the head end of the snake bone structure, and the wire is tightened while the bent portion is bent toward the tightened side;
  • An end surface of the wire positioning ring 1 is provided with a notch 5, and the notch 5 is a gap reserved for the relative rotation of the adjacent two wire positioning rings 1.
  • the wire positioning ring 1 of the present invention replaces the traditional metal material with a flexible material, and the notch 5 is provided at the same time, the bending gap is reserved, the flexibility of the bending portion is greatly enhanced, the pulling operation is more sensitive, and the metal material must be discarded.
  • the welding, riveting and other processes can be directly injection molded by the mold, the assembly is simple, the yield is high, and the recessed structure through which the pull wire passes through the surface of the traditional metal bent portion is discarded, so that the pull wire directly from the inside of the side wall 2
  • the wire piercing hole 3 passes through, which greatly reduces the friction caused by the frequent entry and exit of the wire and the outer wall of the bending portion; due to the softness of the material of the wire positioning ring 1, it is difficult to be damaged due to frequent pulling during use, and the stability is used. And the reliability is obviously improved.
  • one or several wire positioning ring 1 is detached or damaged, the pulling of the wire is not affected, and the wire of the metal bending portion is not caught by a certain wire positioning ring. Case.
  • the axial lines of the two wire through holes 3 on the wire positioning ring 1 and the axis line of the wire positioning ring 1 are parallel to each other.
  • the axial line of the wire positioning ring 1 intersects with the line connecting the axial lines of the two wire piercings.
  • each of the cable positioning ring 1 has two latches 6 on one end thereof, and two latches 7 on the other end.
  • the two latches 6 are respectively provided with a round bar.
  • the two latches 7 are respectively provided with the same through holes 9.
  • the round rods 8 of the two latches 6 on the cable positioning ring 1 are respectively inserted into the through-holes 9 of the two latch seats 7 on the adjacent cable positioning ring 1.
  • the round bars 8 are in one-to-one correspondence with the through holes 9, that is, the hinges of the two adjacent wire positioning rings 1 are realized.
  • the end surface of the cable positioning ring 1 on which the lug 6 is disposed is provided with a notch 5, and the end surface of the cable positioning ring 1 on which the lug seat 7 is provided is a flat surface.
  • the end surface of the cable positioning ring 1 on which the lug 6 is disposed is a flat surface, and the end surface of the cable positioning ring 1 on which the lug seat 7 is provided is provided with a notch 5.
  • the notch 5 has a concave arcuate shape.
  • the wire positioning ring 1 is made of medical plastic.

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  • Heart & Thoracic Surgery (AREA)
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Abstract

一种用于一次性内窥镜的弯曲部，包括若干个拉线定位环(1)，拉线定位环(1)为柔性材质；每一拉线定位环(1)的相对的两侧壁(2)内各设有一贯穿该侧壁(2)的拉线穿孔(3)；若干个拉线定位环(1)依次首尾铰接，形成可弯曲的蛇骨结构，拉线定位环(1)内的拉线穿孔(3)依次贯通形成位于拉线定位环(1)侧壁(2)内的拉线通道(4)；拉线定位环(1)的一端面设有缺口(5)，缺口(5)为相邻的两拉线定位环(1)可相对转动预留的间隙。采用柔性的材料替代传统的金属材料，同时又预留了弯曲间隙，大大增强了弯曲部的柔软性，使拉动操作更灵敏。

Description

一种用于一次性内窥镜的弯曲部 技术领域
本发明涉及一种医疗器械领域，尤其涉及一种用于一次性内窥镜的弯曲部。
背景技术
随着医学的发展，近年来，内窥镜手术越来越被临床采用。内窥镜用蛇骨是内窥镜的重要部件之一，其位于内窥镜前端构成弯曲部，方便实现镜头在人体内改变方向。现有的弯曲部是金属材质，由多个金属材质的拉线定位圈一个个顺序铆接或焊接制作而成，每个拉线定位圈的外壁上均设有凹陷部，拉线顺序穿过这些凹陷部。由于拉线定位圈采用金属材质，因此其柔韧度不够，容易产生尖锐的硬性褶皱，使拉线不能顺畅拉动，一旦其中一个拉线定位圈出现损坏，则拉线就不能实现拉动，整个弯曲部以及整个内窥镜必须替换。另一方面，由于金属拉线定位圈之间是铆接或焊接组成，因此，其加工工艺复杂、容易出现不良，而且，在使用中一旦铆接点或焊接点出现脱离或脱焊，加之金属材质的刚性，很容易导致整个弯曲部失灵，拉线无法被拉动，内窥镜无法转动，给操作者造成不便，给病患增加不必要的痛苦。
由此可见，现有技术还存在一定缺陷。
发明内容
有鉴于此，为了解决现有技术中的问题，本发明提出一种加工简单、可靠性更高的用于一次性内窥镜的弯曲部。
本发明通过以下技术手段解决上述问题：
一种用于一次性内窥镜的弯曲部，包括若干个拉线定位环，拉线定位环为柔性材质；
每一所述拉线定位环的相对的两侧壁内各设有一贯穿该侧壁的拉线穿孔；
若干个所述拉线定位环依次首尾铰接，形成可弯曲的蛇骨结构，拉线定位环内的拉线穿孔依次贯通形成位于拉线定位环侧壁内的拉线通道；
所述拉线定位环的一端面设有缺口，所述缺口为相邻的两拉线定位环可相对转动预留的间隙。
进一步的，所述拉线定位环上的两个拉线穿孔的轴心线与拉线定位环的轴心线相互平行。
进一步的，所述拉线定位环的轴心线与连接两所述拉线穿孔轴心线的连线相交。
进一步的，每一所述拉线定位环的一端面凸设有两个卡耳，另一端面凸设有两个卡耳座，两个卡耳上各凸设有一圆杆，两个卡耳座上各设有一贯穿孔，拉线定位环上两卡耳的圆杆分别插设于相邻的拉线定位环上两卡耳座的贯穿孔，圆杆与贯穿孔一一对应，即实现相邻的两所述拉线定位环的铰接。
进一步的，所述拉线定位环上设有卡耳的端面设有缺口，拉线定位环上设有卡耳座的端面为平面。
进一步的，所述拉线定位环上设有卡耳的端面为平面，拉线定位环上设有卡耳座的端面设有缺口。
进一步的，所述缺口呈内凹的弧面状。
进一步的，所述拉线定位环的材质为医用塑胶。
相较于现有技术，本发明具有以下优点：
1、本发明采用柔性的材料替代传统的金属材料，同时又预留了弯曲间隙，大大增强了弯曲部的柔软性，使拉动操作更灵敏；
2、摒弃了金属材料必须的焊接、铆接等工艺，可直接采用模具注塑成型，组装简单，良率高；
3、两拉线通道内各容纳有一拉线,摒弃了传统金属弯曲部表面的供拉线穿过的凹陷部结构，使拉线直接从侧壁内穿过，大大减少了拉线与弯曲部外壁频繁进出导致的摩擦；由于拉线定位环材质的柔软性，因此，在使用过程中，其很难由于被频繁拉动导致损坏，使用稳定性可靠性均明显提高，另一方面，如果某一个或几个拉线定位环出现脱离或损坏，也并不影响拉线的拉动，不会出现金属弯曲部的拉线被某个拉线定位环卡住的情况。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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。
图1是本发明中拉线定位环的结构示意图；
图2是本发明中拉线定位环的剖视图；
图3是本发明中相邻的两拉线定位环连接的结构示意图；
图4是本发明中相邻的两拉线定位环连接的剖视图；
图5是本发明弯曲时的结构示意图。
附图标记说明：
1、拉线定位环；2、侧壁；3、拉线穿孔；4、拉线通道；5、缺口；6、卡 耳；7、卡耳座；8、圆杆；9、贯穿孔。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面将结合附图和具体的实施例对本发明的技术方案进行详细说明。需要指出的是，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前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要理解的是，术语“顶部”、“底部”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“一组”的含义是两个或两个以实施例。
实施例
如图1-5所示，一种用于一次性内窥镜的弯曲部，包括若干个拉线定位环1，拉线定位环1为柔性材质；
每一所述拉线定位环1的相对的两侧壁2内各设有一贯穿该侧壁2的拉线穿孔3；
若干个所述拉线定位环1依次首尾铰接，形成可弯曲的蛇骨结构，若干个 拉线定位环1内的拉线穿孔3依次贯通形成位于拉线定位环1的侧壁2内的拉线通道4，两拉线通道4内各容纳有一拉线，两所述拉线的一端均与蛇骨结构首端的拉线定位环1相接，一边拉线收紧，弯曲部便向收紧的那边弯曲；
所述拉线定位环1的一端面设有缺口5，所述缺口5为相邻的两拉线定位环1可相对转动预留的间隙。
本发明中的拉线定位环1采用柔性的材料替代传统的金属材料，同时设置缺口5，预留了弯曲间隙，大大增强了弯曲部的柔软性，使拉动操作更灵敏，其次摒弃了金属材料必须的焊接、铆接等工艺，可直接采用模具注塑成型，组装简单，良率高，而且还摒弃了传统金属弯曲部表面的供拉线穿过的凹陷部结构，使拉线直接从侧壁2内中的拉线穿孔3穿过，大大减少了拉线与弯曲部外壁频繁进出导致的摩擦；由于拉线定位环1材质的柔软性，因此，在使用过程中，其很难由于被频繁拉动导致损坏，使用稳定性和可靠性均明显提高，另一方面，如果某一个或几个拉线定位环1出现脱离或损坏，也并不影响拉线的拉动，不会出现金属弯曲部的拉线被某个拉线定位环卡住的情况。
作为优选方案的，所述拉线定位环1上的两个拉线穿孔3的轴心线与拉线定位环1的轴心线相互平行。
作为优选方案的，所述拉线定位环1的轴心线与连接两所述拉线穿孔3轴心线的连线相交。
作为优选方案的，每一所述拉线定位环1的一端面凸设有两个卡耳6，另一端面凸设有两个卡耳座7，两个卡耳6上各凸设有一圆杆8，两个卡耳座7上各设有一贯穿孔9，拉线定位环1上两卡耳6的圆杆8分别插设于相邻的拉线定位环1上两卡耳座7的贯穿孔9，圆杆8与贯穿孔9一一对应，即实现相邻的两所述拉线定位环1的铰接。
作为优选方案的，所述拉线定位环1上设有卡耳6的端面设有缺口5，拉线定位环1上设有卡耳座7的端面为平面。
作为优选方案的，所述拉线定位环1上设有卡耳6的端面为平面，拉线定位环1上设有卡耳座7的端面设有缺口5。
作为优选方案的，所述缺口5呈内凹的弧面状。
作为优选方案的，所述拉线定位环1的材质为医用塑胶。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (8)

  1. 一种用于一次性内窥镜的弯曲部，其特征在于，包括若干个拉线定位环，拉线定位环为柔性材质；
    每一所述拉线定位环的相对的两侧壁内各设有一贯穿该侧壁的拉线穿孔；
    若干个所述拉线定位环依次首尾铰接，形成可弯曲的蛇骨结构，拉线定位环内的拉线穿孔依次贯通形成位于拉线定位环侧壁内的拉线通道；
    所述拉线定位环的一端面设有缺口，所述缺口为相邻的两拉线定位环可相对转动预留的间隙。
  2. 根据权利要求1所述的用于一次性内窥镜的弯曲部,其特征在于，所述拉线定位环上的两个拉线穿孔的轴心线与拉线定位环的轴心线相互平行。
  3. 根据权利要求1所述的用于一次性内窥镜的弯曲部,其特征在于，所述拉线定位环的轴心线与连接两所述拉线穿孔轴心线的连线相交。
  4. 根据权利要求1所述的用于一次性内窥镜的弯曲部,其特征在于，每一所述拉线定位环的一端面凸设有两个卡耳，另一端面凸设有两个卡耳座，两个卡耳上各凸设有一圆杆，两个卡耳座上各设有一贯穿孔，拉线定位环上两卡耳的圆杆分别插设于相邻的拉线定位环上两卡耳座的贯穿孔，圆杆与贯穿孔一一对应，即实现相邻的两所述拉线定位环的铰接。
  5. 根据权利要求1所述的用于一次性内窥镜的弯曲部,其特征在于，所述拉线定位环上设有卡耳的端面设有缺口，拉线定位环上设有卡耳座的端面为平面。
  6. 根据权利要求1所述的用于一次性内窥镜的弯曲部,其特征在于，所述拉线定位环上设有卡耳的端面为平面，拉线定位环上设有卡耳座的端面设有缺口。
  7. 根据权利要求1所述的用于一次性内窥镜的弯曲部,其特征在于，所述缺 口呈内凹的弧面状。
  8. 根据权利要求1-7任一项所述的用于一次性内窥镜的弯曲部,其特征在于，所述拉线定位环的材质为医用塑胶。
PCT/CN2018/081006 2018-01-02 2018-03-29 一种用于一次性内窥镜的弯曲部 WO2019134269A1 (zh)

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