WO2015024460A1 - 一种医用内窥镜弯曲控制机构 - Google Patents

一种医用内窥镜弯曲控制机构 Download PDF

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Publication number
WO2015024460A1
WO2015024460A1 PCT/CN2014/083961 CN2014083961W WO2015024460A1 WO 2015024460 A1 WO2015024460 A1 WO 2015024460A1 CN 2014083961 W CN2014083961 W CN 2014083961W WO 2015024460 A1 WO2015024460 A1 WO 2015024460A1
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WIPO (PCT)
Prior art keywords
bending
control
winding
handwheel
elastic piece
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PCT/CN2014/083961
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English (en)
French (fr)
Inventor
姜泊
凌代年
Original Assignee
Jiang Bo
Ling Dainian
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Publication date
Application filed by Jiang Bo, Ling Dainian filed Critical Jiang Bo
Publication of WO2015024460A1 publication Critical patent/WO2015024460A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/005Flexible endoscopes
    • A61B1/0051Flexible endoscopes with controlled bending of insertion part
    • A61B1/0057Constructional details of force transmission elements, e.g. control wires
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/005Flexible endoscopes
    • A61B1/0051Flexible endoscopes with controlled bending of insertion part
    • A61B1/0052Constructional details of control elements, e.g. handles

Definitions

  • the present invention relates to the field of medical device technology, and in particular to a medical endoscope bending control mechanism. Background technique
  • An endoscope is a commonly used medical device, and is composed of an insertion portion, a bending portion, a front end portion, a control portion, and a main body, wherein the insertion portion, the bending portion, and the front end portion are collectively referred to as an insertion tube.
  • the endoscope is an expensive medical device.
  • the domestic medical endoscope market is mostly occupied by foreign brands, and the price ranges from tens of thousands to hundreds of thousands. After each use, complex and high-cost disinfection and maintenance are required. Even so, there is a possibility of cross-infection due to irregular disinfection procedures.
  • the conventional endoscope insertion tube is provided with an air supply/water supply passage, a suction passage and a biopsy passage, and a control cable, a signal cable, and a light guiding fiber. Thorough disinfection of the elongated passage is very difficult, but because endoscopes are currently expensive to manufacture, they must be reused. Improvements to traditional endoscopes are necessary to reduce the risk of cost and cross-contamination.
  • “201110056640.0” discloses "a purifying medical endoscope” having the following structure: comprising a soft overall housing of the endoscope, the endoscope soft overall housing is provided with an endoscope main body, and the endoscope main body is The medical resin material encloses the imaging lens assembly, the LED light source, and the optical fiber guide beam, the power supply line, and the signal line, and various passages are provided in the endoscope main body.
  • the above problems are caused by the following problems:
  • the whole body is made of medical resin or soft material, and has poor rigidity. When used, it does not directly reach the affected part, and has a small bending angle and a narrow application range.
  • the endoscope body and the endoscope's soft overall housing still need to be sterilized and sterilized, which does not achieve a true one-time use.
  • the Chinese invention patent "200880017615.8” discloses "an endoscope bending portion", which includes a plurality of node rings having a cylindrical portion (28) juxtaposed coaxially with each other, adjacent two One of the node rings has a protrusion integrally formed with the cylindrical portion and extending in a radial direction of the cylindrical portion, and the other of the two adjacent node rings has an integral portion with the cylindrical portion A receiving portion that can be inserted into the protruding portion so as to be rotatable about a longitudinal axis of the protruding portion, and each of the nodal rings has a discontinuous portion that is joined or joined in a tubular portion that intersects with a circumferential direction of the tubular portion.
  • the endoscope bending portion disclosed in the above invention patent has a complicated structure, high manufacturing difficulty, and high production cost.
  • the bent portion of the disposable medical endoscope in the prior art is either low in production cost, but its bending performance and structure are not suitable for use in the bending portion of the endoscope, or the bending effect is good, but The high production cost and complicated structure lead to high production cost and serious waste of using the bent portion of the disposable medical endoscope.
  • the bending control mechanism with high control precision is particularly important, and the control mechanism completes the motion control and other functions of the bending portion. Because of the need for flexible bending and feedback operations, the control mechanism uses multiple mechanical devices. During the medical examination, it is necessary to fix the position of the front end bend at certain moments and avoid excessive bending. The existing control device needs to be fixed by two hands, which affects the efficiency and quality of medical examination. At the same time, the existing control mechanism has a complicated structure and high cost.
  • a medical endoscope bending control mechanism with high control precision is provided.
  • a bending portion provided at a front portion of the insertion tube, a bending driving unit connected to the bending portion, and a hand wheel adjusting mechanism disposed at the operating portion, the bending portion being provided with a jacket, a bending assembly and a fixing cylinder, the jacket being sleeved on the bending assembly
  • the fixing cylinder is fixed to the front end of the bending assembly
  • the bending drive unit is provided with at least four control cables for controlling the bending of the bending assembly and a control ball disposed at the end of the control cable, and the circumferential direction of the fixed cylinder is connected with the control cable.
  • the control balls at the ends of the control cable are respectively disposed in the connecting slots.
  • a hand wheel adjustment mechanism is provided, and the hand wheel adjustment mechanism is drivingly coupled to the control cable.
  • the fixing cylinder is provided with an upper fixing cylinder and a lower fixing cylinder.
  • the upper fixing cylinder is sleeved on the lower fixing cylinder, and the upper fixing cylinder and the lower fixing cylinder side wall are fixedly connected by bolts.
  • the lower end of the fixed cylinder is fixedly provided with a bending assembly for fixing the camera mechanism.
  • the connecting slots are equidistantly disposed in a circumferential direction of the lower fixed cylinder.
  • the hand wheel adjustment mechanism includes a first hand wheel, a second hand wheel, a center shaft, and a winding assembly
  • the winding assembly includes a first winding shaft, a second winding shaft, a first winding cover, and a second winding cover
  • the first winding shaft and the second winding shaft are respectively provided with two winding slots
  • the four control cables are respectively disposed on the first winding shaft and the second winding shaft
  • the first hand wheel is coupled to the first bobbin by a first connecting plate
  • the second hand wheel is coupled to the second bobbin by a second connecting plate
  • the first a winding shaft is disposed in the first winding cover
  • the second winding shaft is disposed in the second winding cover
  • the central shaft is disposed on the first hand wheel, the second hand wheel, and the winding Line component.
  • the hand wheel adjusting mechanism is provided with two sets of self-locking mechanisms, and the two sets of the self-locking mechanisms are respectively disposed on the first hand wheel and the second hand wheel, wherein the self-locking mechanism comprises a spring piece and a gear assembly,
  • the shrapnel is provided with at least two latches that match the tooth pitch of the gear assembly, and the latch engages the gears as the tab moves.
  • the elastic piece includes a first elastic piece and a second elastic piece, the gear set includes a first gear and a second gear, and the first elastic piece is fixed to the first hand wheel by a first connecting block, the second The elastic piece is fixed to the second hand wheel by a second connecting block, the first elastic piece is meshed with the first gear, the first gear is fixed to the middle shaft, and the second elastic piece is meshed with the second gear The second gear is fixed to the second winding cover.
  • the hand wheel adjusting mechanism is provided with two sets of limiting mechanisms, and the two sets of the limiting mechanisms are respectively disposed on the first winding shaft and the second winding shaft, and the limiting mechanism comprises a limited position slot and a limit The bit slot matches the limit block, and the limit block is disposed in the limit slot.
  • the limiting slot includes a first limiting slot disposed on the first winding cover and a second limiting slot disposed on the second winding cover, the limiting block including a first winding axis disposed on the first winding shaft The first limiting block and the second limiting block disposed on the second winding axis, the first limiting block is disposed in the first limiting slot, and the second limiting block is disposed in the second limiting In the bit slot.
  • the bending component is arranged as a threaded coil having a front end pitch greater than a rear end pitch.
  • a control board is disposed on the lead board, and a lower end of the control cable is connected to the hand wheel adjustment mechanism, and an upper end of the control cable is connected to the bending component.
  • the control mechanism provided inside the passage can be freely bent, and then the reset can be realized by the variable-distance bending assembly, which is manufactured in comparison with the prior art metal joint ring process.
  • the bending portion at the same time as the cost is greatly reduced, achieves the effect of bending and resetting, and reduces the high cost in the entire surgical procedure. This approach really achieves a one-time use.
  • the hand wheel adjustment mechanism can accurately control the bending component to be easily bent by at least four control cables, and has high control precision and good control effect.
  • the hand wheel adjustment mechanism also has a limit mechanism and a self-locking mechanism.
  • the two sets of limiting mechanisms respectively limit the range of rotation of the first hand wheel and the second hand wheel. Because the human hand has an inertia during the operation of the first hand wheel and the second hand wheel, the inertia causes the first hand wheel and the second hand wheel to rotate excessively, thereby making the bending component of the bending component too large. Injury to the patient will also deviate too much from the original observation range.
  • the first limiting block disposed on the side of the first winding shaft rotates, and the rotation range is limited to the arc limiting slot of the fixed first winding cover; for the same reason, the second hand
  • the second limiting block disposed on the side of the second bobbin is rotated, and the range of rotation is limited to a fixed arcuate groove disposed in the second winding cover.
  • the self-locking mechanism can maintain a relatively stable position of the first hand wheel or the second hand wheel when there is no external force.
  • 1 is a schematic view showing the structure of a bending assembly of a medical endoscope bending control mechanism of the present invention.
  • 2 is a schematic view showing the structure of a threaded coil of a medical endoscope bending control mechanism according to the present invention.
  • 3 is a schematic view showing the structure of a hand wheel adjusting mechanism of a medical endoscope bending control mechanism of the present invention;
  • FIG. 4 is a schematic view showing the structure of a self-locking mechanism of a medical endoscope bending control mechanism according to the present invention.
  • FIG. 5 is a schematic structural view of a position limiting mechanism of a medical endoscope bending control mechanism according to the present invention.
  • 11 one second hand wheel, 12—one first shrapnel, 13—one second shrapnel, 14 one first connecting block, fifteen one one second connecting block, 16—one first bobbin, 17—one Two bobbins, 18 - a first connecting plate, 19 - a second connecting plate, 20 - a first winding cover, 21 - a second winding cover, 22 - a central shaft, 23 - a first gear 24 - a second gear, 25 - a first limit slot, 26 - a first limit block, 27 - a wire plate.
  • a medical endoscope bending control mechanism as shown in Figs. 1, 2, and 5, includes a bending portion provided at a front portion of the insertion tube and a bending driving unit connected to the bending portion.
  • the bending portion is provided with a jacket 5, a bending member 2 and a fixing cylinder, and the jacket 5 is sleeved on the bending assembly 2, and the fixing cylinder is fixed to the front end of the bending assembly 2.
  • the bending drive unit includes at least four control cables 7 for controlling the bending of the bending assembly 2 and a control ball 6 disposed at the end of the control cable 7.
  • the circumferential direction of the fixing cylinder is corresponding to the control cable 7 and the connecting slot 8 is provided.
  • the control balls 6 at the ends of the 7 are respectively disposed in the connecting groove 8.
  • a hand wheel adjustment mechanism is provided, and the hand wheel adjustment mechanism is connected to the control cable 7 for driving.
  • the bending assembly 2 is provided as a threaded coil having a front end pitch greater than the rear end pitch.
  • the variable-length bending assembly 2 of the present invention is configured such that the control mechanism provided inside the passage is free to bend, and then the reset is realized by the variable-length bending assembly 2.
  • the cost is greatly reduced, and at the same time, the bending and resetting effects are obtained, the high cost in the whole surgical procedure is reduced, and the one-time use is truly realized.
  • the hand wheel adjustment mechanism can accurately control the bending component 2 to be easily bent by the at least four control cables 7, and has high control precision and good control effect.
  • the curved part is an important part of the endoscope that penetrates into the human body and performs information on steering and collecting.
  • the manufacturing cost of the endoscope greatly affects the overall cost of the endoscope in the production of the endoscope.
  • the curved portion of the endoscope of the present invention is not only extremely cost-effective, but is also suitable for use in a disposable endoscope.
  • the fixing cylinder is provided with an upper fixing cylinder 3 and a lower fixing cylinder 4, and the upper fixing cylinder 3 is sleeved on the lower fixing cylinder 4, and the side walls of the upper fixing cylinder 3 and the lower fixing cylinder 4 are fixedly connected by bolts, and the lower fixing cylinder 4 is fixed.
  • the lower end is fixedly provided with a bending assembly 2 for fixing the camera mechanism 1.
  • the connecting grooves 8 are equidistantly disposed in the circumferential direction of the lower fixed cylinder 4.
  • the lower fixed cylinder 4 is for fixing the threaded coil
  • the upper fixed cylinder 3 is for fixing the image pickup mechanism 1, and the image pickup mechanism 1 is placed in front, and the image pickup mechanism 1 composed of a relatively inexpensive CMOS sensor and an LED light source can collect information.
  • the design of the upper fixed cylinder 3 effectively solves the problem of how to fix the front camera unit 1 in a small space.
  • the control cable 7 is threaded through the wiring board 27, and the lower end of the control cable 7 is connected to the hand wheel adjusting mechanism, and the upper end of the control cable 7 is connected to the bending unit 2.
  • the wire guide plate 27 can achieve the purpose of restraining the control cable 7.
  • the control cable 7 needs to be pierced through the connecting portion during use, and the space inside the bending assembly 2 is narrow, and the control cable 7 is easily entangled during use.
  • the wire guide 27 can effectively separate the control cable 7 to make its operation stable and reliable.
  • FIG. 3 A medical endoscope bending control mechanism of the present invention is shown in FIG. 3.
  • the main technical solution of the present embodiment is substantially the same as that of Embodiment 1.
  • the unexplained features are used in Embodiment 1. Explain, no longer comment here.
  • the hand wheel adjustment mechanism includes a first hand wheel 10, a second hand wheel 11, a center shaft 22, and a winding assembly
  • the winding assembly includes a first winding shaft 16, and a second
  • the bobbin 17, the first bobbin cover 20 and the second bobbin cover 21, the first bobbin 16 and the second bobbin 17 are respectively provided with two winding slots, and the four control cables 7 are respectively disposed at the second In a winding slot of a bobbin 16 and a second bobbin 17, the first hand wheel 10 is coupled to the first bobbin 16 by a first connecting plate 18, and the second hand wheel 11 is passed through a second connecting plate 19 and a second
  • the bobbin 17 is coupled, the first bobbin 16 is disposed in the first bobbin cover 20, the second bobbin 17 is disposed in the second bobbin cover 21, and the central shaft 22 is disposed on the first hand wheel 10, the second hand Wheel 11, winding assembly.
  • the operator controls the bending direction of the bending assembly 2 by rotating the
  • the first hand wheel 10 rotates, the first bobbin 16 is driven by the first connecting plate 18, one control cable 7 is stretched, and the other control cable 7 is relaxed, reacting to the bending assembly 2 of the endoscope , the bending assembly 2 is bent in one direction; for the same reason, the second hand wheel 11 rotates to drive the second bobbin 17 so that the bending portion is bent in the other direction; therefore, the movements of the first hand wheel 10 and the second hand wheel 11 , can control the four-way movement of the bend.
  • a medical endoscope bending control mechanism of the present invention is as shown in FIG. 4.
  • the main technical solution of the present embodiment is substantially the same as that of Embodiment 1 or Embodiment 2, and features not explained in the present embodiment are used. The explanation in Embodiment 1 or Embodiment 2 will not be described here.
  • the hand wheel adjustment mechanism is provided with two sets of self-locking mechanisms, and the two sets of self-locking mechanisms are respectively disposed on the first hand wheel 10 and the second hand wheel 11, and the self-locking mechanism
  • the utility model comprises a spring piece and a gear assembly, wherein the spring piece is provided with at least two card positions matching the tooth pitch of the gear assembly, and the card position meshes with the gear when the spring piece moves.
  • the elastic piece includes a first elastic piece 12 and a second elastic piece 13.
  • the gear set includes a first gear 23 and a second gear 24.
  • the first elastic piece 12 is fixed to the first hand wheel 10 through the first connecting block 14, and the second elastic piece 13 passes.
  • the second connecting block 15 is fixed to the second hand wheel 11, the first elastic piece 12 is meshed with the first gear 23, the first gear 23 is fixed to the middle shaft 22, the second elastic piece 13 is meshed with the second gear 24, and the second gear 24 is fixed.
  • the second winding cover 21 is provided.
  • the first hand wheel 10 rotates, and the elastic piece fixed to the first connecting block 14 rotates with the fixed first gear 23 to generate a self-locking function, and the relative position of the first hand wheel 10 can be maintained without external force support;
  • the second hand wheel 11 rotates, the second elastic piece 13 disposed on the second hand wheel 11 rotates with the fixed second gear 24 to generate a self-locking function, and the second hand can be maintained without external force support. Wheel 11 relative position.
  • the main technical solution of the present embodiment is basically the same as that of Embodiment 1, Embodiment 2 or Embodiment 3, which is not explained in this embodiment.
  • the hand wheel adjusting mechanism is provided with two sets of limiting mechanisms, and the two sets of limiting mechanisms are respectively disposed on the first winding shaft 16 and the second winding shaft 17
  • the limiting mechanism includes a finite slot and a limiting block matched with the limiting slot, and the limiting block is disposed in the limiting slot.
  • the limiting slot includes a first limiting slot 25 disposed on the first winding cover 20 and a second limiting slot disposed in the second winding cover 21 .
  • the limiting block includes a first limiting block 26 and a setting disposed on the first winding shaft 16
  • a second limiting block placed on the second bobbin 17 is provided.
  • the first limiting block 26 is disposed in the first limiting slot 25 .
  • the second limiting block is disposed in the second limiting slot.
  • the limit slot is set as an arc limit slot.
  • the first limit block 26 disposed on the side of the first bobbin 16 rotates.
  • the range of rotation is limited to the arcuate limit groove of the fixed first winding cover 20.
  • the second limiting block disposed on the side of the second bobbin 17 is rotated.
  • the range of rotation is limited to a fixed arcuate recess provided in the second winding cover 21.

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Abstract

一种医用内窥镜弯曲控制机构,包括弯曲部、弯曲驱动单元和手轮调节装置,弯曲部设置有外套(5)、弯曲组件(2)和固定筒(3、4),所述外套(5)套设于弯曲组件(2),固定筒(3、4)固接于所述弯曲组件(2)的前端,设置有弯曲驱动单元,所述弯曲驱动单元包括至少四条控制线缆(7)和控制球(6),所述固定筒(3、4)的周向与控制线缆(7)对应开设有连接槽(8),所述控制线缆(7)端部的控制球(6)分别设置于连接槽(8)内,手轮调节装置与所述控制线缆(7)驱动连接,所述手轮调节装置还设置有两套限位和自锁机构。所述的弯曲组件(2)采用可变距的弯曲组件(2),并通过内部设置的控制机构实现自由弯曲,然后通过可变距的弯曲组件(2)实现复位,具有了弯曲和复位的效果,降低了整个手术过程中高昂的费用,实现了一次性使用,控制精度高,控制效果好。

Description

一种医用内窥镜弯曲控制机构 技术领域
本发明涉及医疗器械技术领域, 具体涉及一种医用内窥镜弯曲控制机构。 背景技术
内窥镜是一种常用的医疗器械, 由插入部、 弯曲部、 前端部、 控制部和主 机组成, 其中插入部、 弯曲部和前端部合称为插入管。 经人体的天然孔道, 或 者是经手术做的小切口进入人体内; 使用时将内窥镜的插入管导入预检查的器 官, 可直接窥视有关部位的变化。
内窥镜是一种昂贵的医疗器械, 国内医用内窥镜市场大部分被国外品牌占 有, 价格从几万到几十万不等, 每次用后要进行复杂且高成本的消毒、 维护。 即使这样, 仍有可能因消毒工序不规范导致交叉感染。 传统的内窥镜插入管内 设置有送气 /送水通道、吸引通道和活检通道及控制线缆、信号电缆和导光纤维。 细长的通道彻底消毒非常困难, 但由于目前内窥镜的制作成本昂贵, 必须重复 使用。 有必要对传统内窥镜进行改进, 降低费用和交叉感染的风险。
后来逐渐出现了独立的可拆卸的一次性产品, 中国发明专利
"201110056640.0" 公开了 "一种净化式医用内窥镜", 其结构是: 包括有内窥 镜软性总体外壳, 内窥镜软性总体外壳内设置有内窥镜主体, 内窥镜主体由医 用树脂材料将成像镜头组件、 LED光源和光纤导光束、 电源线和信号线包箍在 一起, 内窥镜主体内设置有各种通道。
上述技术存在以下问题: 整体釆用医用树脂或软性材料制成, 其刚性差, 在使用时, 并不能直达患处, 并且弯曲角度小, 适用范围窄。 内窥镜主体和内 窥镜软性总体外壳仍需消毒灭菌, 并未实现真正意义上的一次性使用。
中国发明专利 "200880017615.8" 公开了 "一种内窥镜弯曲部", 该内窥镜 弯曲部包括具有筒状部 (28)的、互相同轴地并列设置的多个节环,相邻的两个节环 中的一个节环具有与筒状部一体设置的、 沿筒状部的径向延伸的突出部,相邻的 两个节环中的另一个节环具有与筒状部一体设置的、 供突出部能够以突出部的 长度轴线为中心转动地插入的承受部,各节环具有在筒状部中与筒状部的圓周方 向交叉地延伸的 ^接合或者接合完毕的不连续部。
上述发明专利公开的一种内窥镜弯曲部, 结构复杂, 制造难度高, 生产成 本高。
同时, 现有技术中的一次性医用内窥镜弯曲部, 要么是生产成本低, 但是 其的弯曲性能和结构都不适合内窥镜弯曲部使用, 要么是弯曲效果好, 但是其 生产成本高, 结构复杂, 导致使用这种一次性医用内窥镜弯曲部的生产成本高、 浪费严重。
在降低使用成本的前提下, 控制精度高的弯曲控制机构显得尤为重要, 控 制机构完成对弯曲部的运动控制和其他功能。 因为需要灵活弯曲并反馈操作, 控制机构多釆用机械装置。 在医学检查过程中, 某些时刻需要固定前端弯曲部 位置, 并避免过度弯曲。 而现有控制装置需要两手操作固定, 影响医学检查效 率和质量。 同时现有控制机构结构复杂, 成本较高。
因此, 针对现有技术中的存在问题, 亟需提供一种结构简单、 成本低、 控 制精度高的医用内窥镜弯曲控制机构。
发明内容 、 、 σ ^
控制精度高的医用内窥镜弯曲控制机构。
提供包括设置于插入管前段的弯曲部、 与弯曲部连接的弯曲驱动单元和设 置于操作部的手轮调节机构, 弯曲部设置有外套、 弯曲组件和固定筒, 所述外 套套设于弯曲组件, 固定筒固接于所述弯曲组件的前端;
设置有弯曲驱动单元, 所述弯曲驱动单元包括至少四条控制弯曲组件弯曲 的控制线缆和设置于控制线缆端部的控制球, 所述固定筒的周向与控制线缆对 应开设有连接槽, 所述控制线缆端部的控制球分别设置于连接槽内, 当驱动控 制线缆沿弯曲组件径向运动时, 控制球带动弯曲组件向控制线缆所处的一侧弯 曲, 当控制线缆停止时, 所述弯曲组件静止, 当控制线缆不受力时, 所述弯曲 组件复位;
设置有手轮调节机构, 所述手轮调节机构与所述控制线缆驱动连接。
其中, 所述固定筒设置有上固定筒和下固定筒, 所述上固定筒套设于所述 下固定筒设置, 所述上固定筒和下固定筒侧壁通过螺栓固定连接, 所述下固定 筒的下端固定设置有弯曲组件, 所述上固定筒用于固定摄像机构。
其中, 所述连接槽等距设置于所述下固定筒的周向。
其中, 所述手轮调节机构包括有第一手轮、 第二手轮、 中轴、 绕线组件, 所述的绕线组件包括第一绕线轴、 第二绕线轴、 第一绕线盖和第二绕线盖, 所 述第一绕线轴和所述第二绕线轴分别设置有两个绕线槽位, 所述四条控制线缆 两两分别设置于第一绕线轴和第二绕线轴的绕线槽位内, 所述第一手轮通过第 一连接板与所述第一绕线轴联接, 所述第二手轮通过第二连接板与所述第二绕 线轴联接, 所述第一绕线轴设置于所述第一绕线盖内, 所述第二绕线轴设置于 所述第二绕线盖内, 所述中轴穿设于所述第一手轮、 第二手轮、 绕线组件。 操 作者通过转动第一手轮、 第二手轮驱动控制线缆运动, 来控制弯曲组件的弯曲 方向。
其中, 所述手轮调节机构设置有两套自锁机构, 两套所述自锁机构分别设 置于第一手轮和第二手轮, 所述自锁机构包括有弹片和齿轮组件, 所述弹片设 置有至少两个与齿轮组件的齿间距相匹配的卡位, 当弹片运动时, 卡位与齿轮 啮合。
其中, 所述弹片包括第一弹片和第二弹片, 所述齿轮组包括第一齿轮和第 二齿轮, 所述第一弹片通过第一连接块固定于所述第一手轮, 所述第二弹片通 过第二连接块固定于第二手轮, 所述第一弹片与所述第一齿轮啮合, 所述第一 齿轮固定于所述中轴, 所述第二弹片与所述第二齿轮啮合, 所述第二齿轮固定 于所述第二绕线盖。
其中, 所述手轮调节机构设置有两套限位机构, 两套所述限位机构分别设 置于所述第一绕线轴和第二绕线轴, 所述限位机构包括有限位槽和与限位槽匹 配的限位块, 所述限位块设置于限位槽内。
其中, 所述限位槽包括设置于所述第一绕线盖的第一限位槽和设置于第二 绕线盖的第二限位槽, 所述限位块包括设置于第一绕线轴的第一限位块和设置 于第二绕线轴的第二限位块, 所述第一限位块设置于所述第一限位槽内, 所述 第二限位块设置于第二限位槽内。
其中, 所述弯曲组件设置为前端节距大于后端节距的螺纹线圈。
其中, 设置有导线板, 所述控制线缆穿设于所述导线板, 所述控制线缆的 下端与所述手轮调节机构连接, 所述控制线缆的上端与所述弯曲组件连接。
本发明的有益效果:
本发明的通过釆用可变距的弯曲组件, 可以使通道内部设置的控制机构自 由地实现弯曲, 然后通过可变距的弯曲组件实现复位, 相比现有技术中的金属 节环工艺制造的弯曲部, 在成本大大降低的同时, 达到弯曲和复位的效果, 降 低了整个手术过程中高昂的费用。 这种方式真正的实现了一次性使用。 手轮调 节机构通过至少四条控制线缆可以精确的控制弯曲组件向所需方便弯曲, 控制 精度高, 控制效果好。 手轮调节机构还具有限位机构和自锁机构。
两套限位机构分别限制第一手轮和第二手轮转动范围。 因为人手在操作第 一手轮和第二手轮转动的过程中会有一个惯性, 惯性会造成第一手轮和第二手 轮转动幅度过大, 从而使弯曲组件的弯曲幅度过大, 易对患者造成伤害, 也会 过多偏离原来的观察范围。 当第一手轮转动, 设置于第一绕线轴侧面的第一限 位块随着转动, 转动范围被限定在固定的第一绕线盖的弧形限位槽内; 同理, 第二手轮转动时, 设置于第二绕线轴侧面的第二限位块伴随转动, 转动范围被 限定在固定的设置于第二绕线盖的弧形凹槽内。 自锁机构可以无外力作用的时候, 保持第一手轮或第二手轮的相对稳定的 位置。 附图说明
利用附图对本发明作进一步说明, 但附图中的实施例不构成对本发明的任 何限制。
图 1是本发明的一种医用内窥镜弯曲控制机构的弯曲组件的结构示意图。 图 2是本发明的一种医用内窥镜弯曲控制机构的螺纹线圈的结构示意图。 图 3是本发明的一种医用内窥镜弯曲控制机构的手轮调节机构的结构示意 图
图 4是本发明的一种医用内窥镜弯曲控制机构的自锁机构的结构示意图。 图 5是本发明的一种医用内窥镜弯曲控制机构的限位机构的结构示意图 在图 1、 图 2、 图 3、 图 4、 图 5中包括有:
1——摄像机构、 2——弯曲组件、 3——上固定筒、 4——下固定筒、 5—— 外套、 6—一控制球、 7—一控制线缆、 8—一连接槽、 10—一第一手轮。
11一一第二手轮、 12—一第一弹片、 13—一第二弹片、 14一一第一连接块、 15一一第二连接块、 16—一第一绕线轴、 17—一第二绕线轴、 18—一第一连接 板、 19一一第二连接板、 20—一第一绕线盖、 21—一第二绕线盖、 22—一中轴、 23一一第一齿轮、 24—一第二齿轮、 25—一第一限位槽、 26一一第一限位块、 27——导线板。 具体实施方式
结合以下实施例对本发明作进一步详细描述。
实施例 1
一种医用内窥镜弯曲控制机构, 如图 1、 图 2、 图 5所示, 包括设置于插入 管前段的弯曲部、 与弯曲部连接的弯曲驱动单元。 弯曲部设置有外套 5、 弯曲组 件 2和固定筒, 外套 5套设于弯曲组件 2, 固定筒固接于弯曲组件 2的前端。
弯曲驱动单元包括至少四条控制弯曲组件 2弯曲的控制线缆 7和设置于控 制线缆 7端部的控制球 6, 固定筒的周向与控制线缆 7对应开设有连接槽 8, 控 制线缆 7端部的控制球 6分别设置于连接槽 8内, 当驱动控制线缆 7沿弯曲组 件 2径向运动时, 控制球 6带动弯曲组件 2向控制线缆 7所处的一侧弯曲, 当 控制线缆 7停止时, 弯曲组件 2静止, 当控制线缆 7不受力时, 弯曲组件 2复 位。
设置有手轮调节机构, 手轮调节机构与控制线缆 7驱动连接。
弯曲组件 2设置为前端节距大于后端节距的螺纹线圈。 本发明的釆用可变距的弯曲组件 2,并通道内部设置的控制机构自由的实现 弯曲, 然后通过可变距的弯曲组件 2实现复位。 相比现有技术中的金属节环工 艺制造的弯曲部, 成本大大降低, 也同时具有了弯曲和复位的效果, 降低了整 个手术过程中高昂的费用, 真正的实现了一次性使用。 手轮调节机构通过至少 四条控制线缆 7可以精确的控制弯曲组件 2向所需方便弯曲, 控制精度高, 控 制效果好。
弯曲部作为内窥镜中的重要组成部分, 是内窥镜在伸入人体内, 进行转向 釆集信息的重要部件, 其制造成本在内窥镜生产中会极大地影响内窥镜的整体 造价; 本发明的内窥镜的弯曲部不仅成本极大的降低, 十分适宜在一次性内窥 镜中使用。
其中, 固定筒设置有上固定筒 3和下固定筒 4, 上固定筒 3套设于下固定筒 4设置, 上固定筒 3和下固定筒 4侧壁通过螺栓固定连接, 下固定筒 4的下端固 定设置有弯曲组件 2, 上固定筒 3用于固定摄像机构 1。
其中, 连接槽 8等距设置于下固定筒 4的周向。
下固定筒 4用于固定螺纹线圈, 上固定筒 3用于固定摄像机构 1,摄像机构 1前置, 可以釆用较为便宜的 CMOS传感器及 LED光源等器件构成的摄像机构 1进行釆集信息, 上固定筒 3的设计有效解决了在狭小空间内, 如何固定前置的 摄像机构 1的问题。
控制线缆 7穿设于导线板 27, 控制线缆 7的下端与手轮调节机构连接, 控 制线缆 7的上端与弯曲组件 2连接。
导线板 27能够实现约束控制线缆 7的目的, 控制线缆 7在使用的过程中需 要穿设连接部, 并且弯曲组件 2内的空间狭小, 在使用时, 容易造成控制线缆 7 缠绕, 因此导线板 27可以有效的分离控制线缆 7, 使其运行稳定可靠。
实施例 2
本发明的一种医用内窥镜弯曲控制机构如图 3所示, 本实施例的主要技术 方案与实施例 1基本相同, 在本实施例中未作解释的特征, 釆用实施例 1中的 解释, 在此不再进行赞述。 本实施例与实施例 1的区别在于: 手轮调节机构包 括有第一手轮 10、 第二手轮 11、 中轴 22、 绕线组件, 的绕线组件包括第一绕线 轴 16、 第二绕线轴 17、 第一绕线盖 20和第二绕线盖 21, 第一绕线轴 16和第二 绕线轴 17分别设置有两个绕线槽位, 四条控制线缆 7两两分别设置于第一绕线 轴 16和第二绕线轴 17的绕线槽位内, 第一手轮 10通过第一连接板 18与第一 绕线轴 16联接, 第二手轮 11通过第二连接板 19与第二绕线轴 17联接, 第一 绕线轴 16设置于第一绕线盖 20内, 第二绕线轴 17设置于第二绕线盖 21内, 中轴 22穿设于第一手轮 10、 第二手轮 11、 绕线组件。 操作者通过转动第一手轮 10、 第二手轮 11驱动控制线缆 7运动, 来控制弯 曲组件 2的弯曲方向。
使用时, 第一手轮 10转动, 通过第一连接板 18带动第一绕线轴 16, 一条 控制线缆 7被拉伸, 另外一条控制线缆 7被放松, 反应到内窥镜的弯曲组件 2, 使得弯曲组件 2向一个方向弯曲; 同理,第二手轮 11转动,带动第二绕线轴 17, 使得弯曲部向另一方向弯曲; 故第一手轮 10和第二手轮 11的运动, 可以控制 弯曲部的四向运动。
实施例 3
本发明的一种医用内窥镜弯曲控制机构, 如图 4所示, 本实施例的主要技 术方案与实施例 1或者实施例 2基本相同, 在本实施例中未作解释的特征, 釆 用实施例 1或者实施例 2中的解释, 在此不再进行赞述。 本实施例与实施例 1 或者实施例 2的区别在于: 手轮调节机构设置有两套自锁机构, 两套自锁机构 分别设置于第一手轮 10和第二手轮 11, 自锁机构包括有弹片和齿轮组件, 弹片 设置有至少两个与齿轮组件的齿间距相匹配的卡位, 当弹片运动时, 卡位与齿 轮啮合。
其中, 弹片包括第一弹片 12和第二弹片 13, 齿轮组包括第一齿轮 23和第 二齿轮 24, 第一弹片 12通过第一连接块 14固定于第一手轮 10, 第二弹片 13 通过第二连接块 15固定于第二手轮 11, 第一弹片 12与第一齿轮 23啮合, 第一 齿轮 23固定于中轴 22, 第二弹片 13与第二齿轮 24啮合, 第二齿轮 24固定于 第二绕线盖 21。
第一手轮 10转动, 固定于第一连接块 14弹片随着转动, 与固定的第一齿 轮 23啮合并产生自锁功能, 在无外力支持下, 可维持第一手轮 10相对位置; 同理, 第二手轮 11转动时, 设置于第二手轮 11的第二弹片 13伴随转动, 与固 定的第二齿轮 24啮合并产生自锁功能, 在无外力支持下, 可维持第二手轮 11 相对位置。
实施例 4
本发明的一种医用内窥镜弯曲控制机构, 如图 5所示, 本实施例的主要技 术方案与实施例 1、 实施例 2或者实施例 3基本相同, 在本实施例中未作解释的 特征, 釆用实施例 1、 实施例 2或者实施例 3中的解释, 在此不再进行赘述。 本 实施例与实施例 1、 实施例 2或者实施例 3的区别在于: 手轮调节机构设置有两 套限位机构, 两套限位机构分别设置于第一绕线轴 16和第二绕线轴 17, 限位 机构包括有限位槽和与限位槽匹配的限位块, 限位块设置于限位槽内。
其中, 限位槽包括设置于第一绕线盖 20的第一限位槽 25和设置于第二绕 线盖 21的第二限位槽。 限位块包括设置于第一绕线轴 16的第一限位块 26和设 置于第二绕线轴 17的第二限位块。 第一限位块 26设置于第一限位槽 25内。 第 二限位块设置于第二限位槽内。
其中, 限位槽设置为弧形限位槽。
当第一手轮 10转动,设置于第一绕线轴 16侧面的第一限位块 26随着转动。 转动范围被限定在固定的第一绕线盖 20的弧形限位槽内。 同理, 第二手轮 11 转动时, 设置于第二绕线轴 17侧面的第二限位块伴随转动。 转动范围被限定在 固定的设置于第二绕线盖 21的弧形凹槽内。
最后应当说明的是, 以上实施例仅用以说明本发明的技术方案而非对本发 明保护范围的限制, 尽管参照较佳实施例对本发明作了详细说明, 本领域的普 通技术人员应当理解, 可以对本发明的技术方案进行修改或者等同替换, 而不 脱离本发明技术方案的实质和范围。

Claims

权利要求书
1、 一种医用内窥镜弯曲控制机构, 包括设置于插入管前段的弯曲部、 与弯 曲部连接的弯曲驱动单元和设置于操作部的手轮调节机构, 其特征在于: 弯曲 部设置有外套、 弯曲组件和固定筒, 所述外套套设于弯曲组件, 固定筒固接于 所述弯曲组件的前端;
所述弯曲驱动单元包括至少四条控制弯曲组件弯曲的控制线缆和设置于控 制线缆端部的控制球, 所述固定筒的周向与控制线缆对应开设有连接槽, 所述 控制线缆端部的控制球分别设置于连接槽内, 当驱动控制线缆沿弯曲组件径向 运动时, 控制球带动弯曲组件向控制线缆所处的一侧弯曲, 当控制线缆停止时, 所述弯曲组件静止, 当控制线缆不受力时, 所述弯曲组件复位;
所述手轮调节机构与所述控制线缆驱动连接。
2、 根据权利要求 1所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述固定筒设置有上固定筒和下固定筒, 所述上固定筒与所述下固定筒套接, 所 述上固定筒和下固定筒侧壁通过螺栓固定连接, 所述下固定筒的下端固定设置 有弯曲组件, 所述上固定筒用于固定摄像机构。
3、 根据权利要求 2所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述连接槽等距设置于所述下固定筒的周向。
4、 根据权利要求 1所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述手轮调节机构包括有第一手轮、 第二手轮、 中轴、 绕线组件, 所述的绕线组 件包括第一绕线轴、 第二绕线轴、 第一绕线盖和第二绕线盖, 所述第一绕线轴 和所述第二绕线轴分别设置有两个绕线槽位, 所述四条控制线缆两两分别设置 于第一绕线轴和第二绕线轴的绕线槽位内, 所述第一手轮通过第一连接板与所 述第一绕线轴联接, 所述第二手轮通过第二连接板与所述第二绕线轴联接, 所 述第一绕线轴设置于所述第一绕线盖内, 所述第二绕线轴设置于所述第二绕线 盖内, 所述中轴穿设于所述第一手轮、 第二手轮、 绕线组件。
5、 根据权利要求 4所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述手轮调节机构设置有两套自锁机构, 两套所述自锁机构分别设置于第一手轮 和第二手轮内, 所述自锁机构包括有弹片和齿轮组件, 所述弹片设置有至少两 个与齿轮组件的齿间距相匹配的卡位, 当弹片运动时, 卡位与齿轮啮合。
6、 根据权利要求 5所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述弹片包括第一弹片和第二弹片, 所述齿轮组包括第一齿轮和第二齿轮, 所述 第一弹片通过第一连接块固定于所述第一手轮, 所述第二弹片通过第二连接块 固定于第二手轮, 所述第一弹片与所述第一齿轮啮合, 所述第一齿轮固定于所 述中轴, 所述第二弹片与所述第二齿轮啮合, 所述第二齿轮固定于所述第二绕 线盖。
7、 根据权利要求 4所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述手轮调节机构设置有两套限位机构, 两套所述限位机构分别设置于所述第一 绕线轴和第二绕线轴, 所述限位机构包括有限位槽和与限位槽匹配的限位块, 所述限位块设置于限位槽内。
8、 根据权利要求 7所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述限位槽包括设置于所述第一绕线盖的第一限位槽和设置于第二绕线盖的第二 限位槽, 所述限位块包括设置于第一绕线轴的第一限位块和设置于第二绕线轴 的第二限位块, 所述第一限位块设置于所述第一限位槽内, 所述第二限位块设 置于第二限位槽内。
9、 根据权利要求 1所述的一种医用内窥镜弯曲控制机构, 其特征在于: 所 述弯曲组件设置为前端节距大于后端节距的螺纹线圈。
10、 根据权利要求 1所述的一种医用内窥镜弯曲控制机构, 其特征在于: 设置有导线板, 所述控制线缆穿设于所述导线板, 所述控制线缆的下端与所述 手轮调节机构连接, 所述控制线缆的上端与所述弯曲组件连接。
PCT/CN2014/083961 2013-08-20 2014-08-08 一种医用内窥镜弯曲控制机构 WO2015024460A1 (zh)

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