WO2022148280A1 - 内窥镜弯曲管 - Google Patents

内窥镜弯曲管 Download PDF

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Publication number
WO2022148280A1
WO2022148280A1 PCT/CN2021/142304 CN2021142304W WO2022148280A1 WO 2022148280 A1 WO2022148280 A1 WO 2022148280A1 CN 2021142304 W CN2021142304 W CN 2021142304W WO 2022148280 A1 WO2022148280 A1 WO 2022148280A1
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Prior art keywords
bending tube
endoscope
ring
section
tube
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PCT/CN2021/142304
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English (en)
French (fr)
Inventor
旷金
李永强
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陈雍睿
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Application filed by 陈雍睿 filed Critical 陈雍睿
Priority to EP21917319.2A priority Critical patent/EP4275584A1/en
Publication of WO2022148280A1 publication Critical patent/WO2022148280A1/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
    • A61B1/0011—Manufacturing of endoscope parts
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476—Non-optical details, e.g. housings, mountings, supports

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  • the utility model relates to the technical field of medical instruments, in particular to the technical field of endoscopes, in particular to a bending tube of an endoscope.
  • Endoscopes are widely used in medical or industrial fields, and can be used to examine the inside of patients or industrial products in a minimally invasive state. Since the camera head of the endoscope for inspection is mostly set at the front end of the outer tube, if the camera is rotated or the shooting field of view is changed, a controllable bending tube must be installed at the insertion end of the outer tube, so that the shooting field of the camera follows the insertion end of the outer tube. change by bending.
  • the endoscope bending tubes in the prior art all use the riveting of each bending unit section to complete the bending, but the riveting structure is complex, has many parts, is easily damaged and has a poor bending shape. Therefore, there is an urgent need for a simple structure and low cost. Low, high reliability and good bending shape of the endoscope bending tube.
  • the purpose of the utility model is to overcome the above-mentioned shortcomings in the prior art, and to provide an endoscope bending tube with simple structure, low cost, high reliability and good bending shape.
  • the utility model has the following structure: comprising a curved pipe, a tubular steel wire rope welding section and a tubular connecting ring fixing section respectively arranged at both ends of the curved pipe, and characterized in that the curved pipe includes a number of tubular wires connected in series.
  • a unit segment; two adjacent unit segments are connected by an interlocking structure, and the interlocking structure includes a first rotating mechanism and a second rotating mechanism respectively arranged at both ends of the unit segment; the unit Corresponding through holes are arranged on both sides of the inner wall of the section for penetrating the wire rope.
  • the first rotating structure includes a first annular ring with an opening, and an annular first groove disposed on the periphery of the first annular ring.
  • the second rotating mechanism includes a second ring provided with an opening, and a circular second groove provided with the inner side of the second ring, and the second ring can be Embedded in the first groove, the first ring can be embedded in the second groove.
  • the edges at both ends of the unit segment are inclined surfaces.
  • the angle formed by the edge slopes of adjacent unit segments in the front section of the endoscope bending tube is A degree;
  • the upper end of the angle is B degrees, and the lower end is C degrees;
  • the included angle formed by the edge slopes of adjacent unit segments in the rear section of the endoscope curved tube is D degrees;
  • the number of included angles is C>B>A>D.
  • the two sides of the circumference of the steel wire rope welding section are provided with riveting pressure positions at corresponding positions, and a process hole is set at an adjacent position of one of the riveting pressure positions.
  • process holes at corresponding positions are provided on both sides of the circumference of the ring-connecting fixing section.
  • the endoscope bending tube is a stainless steel tube cut by laser.
  • the endoscope bending tube adopting the utility model comprises a bending tube, a tubular steel wire rope welding section connected to both ends of the bending tube and a tubular connecting ring fixing section, and is characterized in that the bending tube includes a plurality of tubular unit sections connected in series; The adjacent unit segments are connected by a fitting structure, and the fitting structure includes a first rotating mechanism and a second rotating mechanism respectively arranged on both sides of the unit segment; the inner wall of the unit segment is provided with corresponding Through holes at the location for threading the wire rope.
  • the utility model has the advantages of simple structure, low cost, high reliability and good bending shape.
  • FIG. 1 is a schematic structural diagram of a preferred embodiment of the endoscope bending tube of the utility model
  • Fig. 2 is the structural representation of the unit section of the utility model
  • FIG. 3 is a schematic diagram of a preferred embodiment of the endoscope bending tube of the utility model being bent to a large angle side for use;
  • FIG. 4 is a schematic diagram of a preferred embodiment of the endoscope bending tube of the utility model being bent to a small angle side for use;
  • Figure 1 is a schematic structural diagram of a preferred embodiment of the endoscope bending tube of the utility model.
  • the curved pipe includes 19 tubular unit sections 1 that are connected in series; the two adjacent unit sections 1 are connected by a built-in structure 4, and the built-in structure 4 includes separately arranged
  • the first rotating mechanism and the second rotating mechanism on both sides of the unit segment; the adjacent unit segments 1 complete the relative rotation of the adjacent unit segments 1 through the fitting connection between the first rotating mechanism and the second rotating structure;
  • the edges of both ends of the unit section 1 are inclined planes, and the angle formed by the inclined planes of the edges of the adjacent unit sections 1 in the front section of the endoscope bending tube is A degree;
  • the upper end of the formed angle is B degrees, and the lower end is C degrees; the included angle formed by the edge slope of the adjacent unit section at the rear section of the endoscope
  • riveting and pressing positions 5 at corresponding positions are provided on both sides of the circumference of the wire rope welding section, and a process hole 6 is set adjacent to one of the riveting and pressing positions 5.
  • the two sides of the circumference of the ring fixing section are provided with process holes 6 in corresponding positions; the two sides of the inner wall of the unit section are provided with through holes in corresponding positions for penetrating the wire rope.
  • the first rotating structure includes a first ring 7 with an opening, and an annular first groove arranged on the periphery of the first ring 7 8;
  • the second rotating mechanism includes a second ring 9 provided with an opening, and an annular second groove 10 provided with the inner side of the second ring 9;
  • the second ring 9 can be embedded in any In the first groove 8, the second ring 9 can rotate in the first groove 8;
  • the first ring 7 can be embedded in the second groove 10, the The first ring 7 can be rotated in the second groove 10.
  • the endoscope bending tube is a laser-cut stainless steel tube, which is cut to the axis of the metal tube by laser to form a ring and a groove to achieve bending.
  • the end of the wire rope welding section 2 is provided with a head end of the endoscope.
  • the head end of the endoscope generally has a built-in CMOS image sensor, a light guide hole, a working channel, a water jet hole and other working parts.
  • the endoscope bending tube of the utility model is provided with two steel wire ropes, the two steel wire ropes penetrate through the through holes provided on the inner wall of the unit section 1 and are fixed to the riveting pressure position on the steel wire rope welding section 2
  • Figure 3 which shows that the endoscope bending tube has a uniform radius of curvature as a whole when the endoscope bending tube is maximally bent.
  • FIG. 4 shows a bent state of the endoscope bending tube on the small-angle side.
  • the bent tubes in the bent state are all in a smooth arc shape.
  • the unit sections of the endoscope bending tube in the prior art are connected by a riveting structure, and the bending tube using this structure cannot automatically rebound to the original state after being rotated.
  • the bending tube is a whole. When the bending tube pulls the wire rope and bends it, it will generate a certain rebound force. When the wire rope is loosened, the bending tube will automatically return to the original state, which is the best way to lift the wire rope in actual use. It improves the convenience and improves the actual use experience.
  • the endoscope bending tube of the utility model is cut from a stainless steel tube, which is convenient to process and has low manufacturing cost; the bending tube has a better bending shape, high bending flexibility and reliable quality.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Abstract

一种内窥镜弯曲管，包括弯曲管及连接于弯曲管两端的管状钢丝绳焊接段（2）和管状接圈固定段（3）。弯曲管包括若干串联的管状单元节（1）；相邻的单元节（1）采用嵌合式结构（4）连接，嵌合式结构（4）包括分别设置于单元节（1）两侧的第一转动机构以及第二转动机构；单元节（1）内壁两侧设置有对应位置的通孔，用于穿入钢丝绳。该内窥镜弯曲管具有结构简单，成本较低，可靠性高并且弯曲形态好的优点。

Description

内窥镜弯曲管 技术领域
本实用新型涉及医疗器械技术领域，特别涉及内窥镜技术领域，具体是指一种内窥镜弯曲管。
背景技术
内窥镜广泛应用于医疗领域或者工业领域，可在微创的状态下，对患者体内或工业产品内部进行检查。由于进行检查的内窥镜的摄像头多设置于外管的前端，若使摄像头转动或改变拍摄视野，必须在外管的插入端部设置可控弯曲管，使摄像头的拍摄视野随外管的插入端的弯曲而发生改变。
现有技术中的内窥镜弯曲管都采用将各个弯曲单元节铆接以完成弯曲，但铆接结构结构复杂，零件较多，容易损坏且弯曲形态较差，因此亟需一种结构简单，成本较低，可靠性高并且弯曲形态好的内窥镜弯曲管。
实用新型内容
该实用新型的目的是克服了上述现有技术中的缺点，提供一种结构简单，成本较低，可靠性高并且弯曲形态好的内窥镜弯曲管。
为了实现上述的目的，该实用新型的具有如下构成：包括弯曲管及分别设置于弯曲管两端的管状钢丝绳焊接段和管状接圈固定段，其特征在于，所述的弯曲管包括若干串联的管状单元节；相邻的两个所述单元节之间采用嵌合式结构连接，所述的嵌合式结构包括分别设置于所述单元节两端的第一转动机构以及第二转动机构；所述的单元节内壁两侧设置有对应位置的通孔，用于穿入钢丝绳。
该内窥镜弯曲管中，所述的第一转动结构包括设置有具有开口的第一圆环，以及设置于该第一圆环外围的圆环状第一凹槽。
该内窥镜弯曲管中，所述的第二转动机构包括设置有开口的第二圆环，以及设置与第二圆环内侧的圆环状第二凹槽，所述的第二圆环可嵌入所述的第一凹槽内，所述的第一圆环可嵌入该第二凹槽内。
该内窥镜弯曲管中，所述的单元节两端边缘为斜面。
该内窥镜弯曲管中，所述的内窥镜弯曲管前段的相邻单元节边缘斜面形成的夹角为A度；所述的内窥镜弯曲管中段相邻单元节边缘斜面形成的夹角上端为B度，下端为C度；所述的内窥镜弯曲管后段相邻单元节边缘斜面形成的夹角为D度；所述的夹角度数C>B>A>D。
该内窥镜弯曲管中，所述的钢丝绳焊接段的圆周两侧设置有对应位置的铆压位，并在所述的其中一个铆压位相邻位置设置一个工艺孔。
该内窥镜弯曲管中，所述的接圈固定段的圆周两侧设置有对应位置的工艺孔。
该内窥镜弯曲管中，所述的内窥镜弯曲管为激光切割而成的不锈钢管。
采用了该实用新型的内窥镜弯曲管包括弯曲管及连接于弯曲管两端的管状钢丝绳焊接段和管状接圈固定段，其特征在于，所述的弯曲管包括若干串联的管状单元节；相邻的所述单元节采用嵌合式结构连接，所述的嵌合式结构包括分别设置于所述单元节两侧的第一转动机构以及第二转动机构；所述的单元节内壁两侧设置有对应位置的通孔，用于穿入钢丝绳。该实用新型具有结构简单，成本较低，可靠性高并且弯曲形态好的优点。
附图说明
图1为该实用新型的内窥镜弯曲管优选的实施例的结构示意图；
图2为该实用新型的单元节的结构示意图；
图3为该实用新型的内窥镜弯曲管优选的实施例向大角度侧弯曲使用状态示意图；
图4为该实用新型的内窥镜弯曲管优选的实施例向小角度侧弯曲使用状态示意图；
符号说明：
1单元结；2钢丝绳焊接段；3接圈固定段；4嵌合式结构；5铆压位；6工艺孔；7第一圆环；8第一凹槽；9第二圆环；10第二凹槽。
具体实施方式
为了能够更清楚地理解该实用新型的技术内容，特举以下实施例详细说明。
如图1所示为该实用新型的内窥镜弯曲管优选的实施例的结构示意图，在该实施例中，包括弯曲管及分别连接于弯曲管两端的管状钢丝绳焊接段2和管状接圈固定段3，其特征在于，所述的弯曲管包括19节干串联的管状单元节1；相邻的两个所述单元节1采用嵌合式结构4连接，所述的嵌合式结构4包括分别设置于所述单元节两侧的第一转动机构以及第二转动机构；相邻的单元节1通过第一转动机构与第二转动结构的嵌合连接完成相邻单元节1的相对转动；所述的单元节1两端边缘为斜面，所述的内窥镜弯曲管前段的相邻单元节1边缘 斜面形成的夹角为A度；所述的内窥镜弯曲管中段相邻单元节边缘斜面形成的夹角上端为B度，下端为C度；所述的内窥镜弯曲管后段相邻单元节边缘斜面形成的夹角为D度；所述的夹角度数C>B>A>D，即C度夹角所在的一侧为大角度侧，B度夹角所在的一侧为小角度侧。
在优选的实施例中，所述的钢丝绳焊接段的圆周两侧设置有对应位置的铆压位5，并在所述的其中一个铆压位5相邻位置设置一个工艺孔6，该内窥镜弯曲管中，所述的接圈固定段的圆周两侧设置有对应位置的工艺孔6；所述的单元节内壁两侧设置有对应位置的通孔，用于穿入钢丝绳。
如图2所示的单元节的实施例中，所述的第一转动结构包括设置有具有开口的第一圆环7，以及设置于该第一圆环7外围的圆环状第一凹槽8；所述的第二转动机构包括设置有开口的第二圆环9，以及设置与第二圆环9内侧的圆环状第二凹槽10；所述的第二圆环9可嵌入所述的第一凹槽8内，所述的第二圆环9可在所述的第一凹槽8内转动；所述的第一圆环7可嵌入该第二凹槽10内，所述的第一圆环7可在所述的第二凹槽10内转动。
在优选的实施例中，所述的内窥镜弯曲管为激光切割而成的不锈钢管，通过激光向金属管轴心切割，形成圆环及凹槽，实现弯曲。
在优选的实施例中，钢丝绳焊接段2的端部设置内窥镜有的头端部。内窥镜的头端部一般内置CMOS图像传感器、导光孔、工作通道、射水孔等工作部件。
在优选的实施例中，该实用新型的内窥镜弯曲管内设置有两根钢丝绳，该两根钢丝绳从单元节1内壁上设置的通孔穿入并固定于钢丝绳焊接段2上的铆压位上，当拉动大角度侧的钢丝绳时，如图3所示，该图示出了在内窥镜弯曲管进行最大弯曲的状态下整体以均匀的曲率半径，当拉动小角度侧的钢丝绳时如图4所示，为该内窥镜弯曲管在小角度侧的弯曲状态。如图3及图4所示的实施例的使用状态示意图，该弯曲状态下的弯曲管都为顺滑的圆弧状。
现有技术中的内窥镜弯曲管各单元节都采用铆接结构连接，采用该结构的弯曲管转动后无法自动回弹至原始状态，使用该实用新型的内窥镜弯曲管为不锈钢管一体切割而成，非切割为单元节后连接，该弯曲管为一个整体，当弯曲管拉动钢丝绳弯曲后会产生一定回弹力，当松开钢丝绳时弯曲管会自动回到原始状态，为实际使用中提升了便捷性以及提升了实际使用的感受。
本实用新型内窥镜弯曲管采用不锈钢管切割而成，加工方便，制造成本较低；该弯曲管弯曲形态较好，弯曲灵活性较高且质量可靠。
在此说明书中，本实用新型已参照其特定的实施例作了描述。但是，很显然仍可以作出各种修改和变换而不背离本实用新型的精神和范围。因此，说明书和附图应被认为是说明性 的而非限制性的。

Claims (8)

  1. 一种内窥镜弯曲管，包括弯曲管及分别设置于弯曲管两端的管状钢丝绳焊接段和管状接圈固定段，其特征在于，
    所述的弯曲管包括若干串联的管状单元节；
    相邻的两个所述单元节之间采用嵌合式结构连接，所述的嵌合式结构包括分别设置于所述单元节两端的第一转动机构以及第二转动机构；
    所述的单元节内壁两侧设置有对应位置的通孔，用于穿入钢丝绳。
  2. 根据权利要求1所述的内窥镜弯曲管，其特征在于，所述的第一转动结构包括设置有具有开口的第一圆环，以及设置于该第一圆环外围的圆环状第一凹槽。
  3. 根据权利要求2所述的内窥镜弯曲管，其特征在于，所述的第二转动机构包括设置有开口的第二圆环，以及设置于第二圆环内侧的圆环状第二凹槽；所述的第二圆环可嵌入所述的第一凹槽内，所述的第一圆环可嵌入该第二凹槽内。
  4. 根据权利要求1所述的内窥镜弯曲管，其特征在于，所述的单元节两端边缘为斜面。
  5. 根据权利要求4所述的内窥镜弯曲管，其特征在于，所述的内窥镜弯曲管前段的相邻单元节边缘斜面形成的夹角为A度；所述的内窥镜弯曲管中段相邻单元节边缘斜面形成的夹角上端为B度，下端为C度；所述的内窥镜弯曲管后段相邻单元节边缘斜面形成的夹角为D度；所述的夹角度数C>B>A>D。
  6. 根据权利要求1所述的内窥镜弯曲管，其特征在于，所述的钢丝绳焊接段的圆周两侧设置有对应位置的铆压位，并在所述的其中一个铆压位相邻位置设置一个工艺孔。
  7. 根据权利要求1所述的内窥镜弯曲管，其特征在于，所述的接圈固定段的圆周两侧设置有对应位置的工艺孔。
  8. 根据权利要求1所述的内窥镜弯曲管，其特征在于，所述的内窥镜弯曲管为激光切割而成的不锈钢管。
PCT/CN2021/142304 2021-01-07 2021-12-29 内窥镜弯曲管 WO2022148280A1 (zh)

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