WO2021109405A1 - 一种胶囊内窥镜壳体激光焊接密封工艺 - Google Patents

一种胶囊内窥镜壳体激光焊接密封工艺 Download PDF

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Publication number
WO2021109405A1
WO2021109405A1 PCT/CN2020/084389 CN2020084389W WO2021109405A1 WO 2021109405 A1 WO2021109405 A1 WO 2021109405A1 CN 2020084389 W CN2020084389 W CN 2020084389W WO 2021109405 A1 WO2021109405 A1 WO 2021109405A1
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Prior art keywords
shell
laser
capsule endoscope
housing
sealing process
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PCT/CN2020/084389
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English (en)
French (fr)
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李文魁
陈革飞
彭国会
宁浩
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深圳市资福医疗技术有限公司
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Publication of WO2021109405A1 publication Critical patent/WO2021109405A1/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
    • A61B1/04—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 combined with photographic or television appliances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams

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  • the invention relates to the field of medical equipment, in particular to a laser welding and sealing process for a capsule endoscope shell that can be used for gastrointestinal inspection.
  • Capsule endoscopes have been gradually applied to the inspection of the gastrointestinal and digestive tract, because capsule endoscopes belong to the three types of medical products stipulated by the state, and the manufacturing materials, auxiliary materials, and technology of such products are extremely high.
  • the sealing process of the shell, the glue bonding process is currently generally used.
  • This type of glue is a custom glue, which is poor in generality, has a long order cycle and high cost.
  • the glue must be used in a short period of time after opening, which cannot fit the market in real time.
  • the demand for capsule endoscope products has caused considerable waste.
  • the volatilization and aging of the glue will directly affect the quality cycle of the final product, thereby reducing the competitiveness of the product and increasing the difficulty of product sales in the market.
  • the chemical nature of glue there are certain hidden safety hazards such as rupture and corrosion during the process of passing through the human digestive tract and gastrointestinal system.
  • the capsule endoscope products using the glue bonding process will have problems due to the glue containing The substance is banned in the human body, resulting in the banning of capsule endoscope products.
  • the dispensing and curing processes are cumbersome, the curing time is long, and the process cost is increased. At the same time, the corresponding comprehensive cost will also increase.
  • the cumbersome process also increases the defect rate of the product.
  • the present invention provides a laser welding and sealing process for the shell of a capsule endoscope.
  • the technical solution of the present invention is as follows:
  • the capsule endoscope shell is made of polymer materials and includes a first shell and a second shell, and further includes the following steps:
  • the first housing and the second housing are respectively provided with assembling parts, the respective assembling parts of the first housing and the second housing are matched with each other, and the assembling parts of the first housing and the second housing are further provided with interference Part, the interference part is used to pre-tighten the first shell and the second shell of the capsule endoscope;
  • the external laser irradiates the assembly part to melt the contact surface of the assembly part
  • the inner side of the second housing can be further added with a lining, which is used to enhance and maintain the welding surface pressure and protect the internal components of the capsule endoscope.
  • the thickness of the assembling part of the first shell and the second shell is 0.4mm-0.8mm, and the width is 1mm-3mm.
  • the outer diameter interference of the interference portion is 0.03mm to 0.07mm.
  • the wavelength of the external laser can be any of 532 nm, 980 nm, 1080 nm, and 1980 nm, the diameter of the laser spot is 0.5 mm, and the irradiation power range is 4w to 15w.
  • the external laser may be any one of infrared laser, ultraviolet laser, picosecond laser, and femtosecond laser.
  • the external laser can be a single light source or multiple light sources.
  • the capsule shell composed of the first shell and the second shell and the external laser can be welded by using the rotating light source of the shell to be fixed.
  • the capsule shell composed of the first shell and the second shell and the external laser can be welded by using the light source rotating the shell to fix.
  • the capsule shell composed of the first shell and the second shell and the external laser can be welded in a manner that the capsule shell and the light source are at the same time or move at the same time.
  • the capsule endoscope shell is made of polymer materials, and the overlapping part of the first shell and the second shell of the capsule is irradiated with an external laser of a specific wavelength to melt the two The contact surface; after the molten part is cooled, the front and rear shells are connected as a whole to achieve a sealing effect.
  • no consumables and accessories are needed, which solves the problems of poor universality of consumables and accessories, long ordering period, cost waste, etc., and also reduces product risks caused by hidden dangers of consumables and accessories, while simplifying the process and shortening working hours. , Improve the product qualification rate; more timely meet the market demand for capsule endoscope products, reduce production costs, and improve product performance and competitiveness.
  • FIG. 1 is a diagram of the assembly relationship of the shell of the first embodiment of the capsule endoscope of the present invention.
  • Fig. 2 is a diagram of the housing assembly relationship of the second embodiment of the capsule endoscope of the present invention.
  • Figure 3 is a schematic diagram of a welding spot with a laser wavelength of 532nm.
  • Figure 4 is a schematic diagram of a welding spot with a laser wavelength of 1080nm.
  • Figure 5 is a schematic diagram of a welding spot with a laser wavelength of 1980nm.
  • the capsule endoscope includes a first housing 110 and a second housing 210 made of polymer materials, and the first housing
  • the body 110 further includes a photographing component 310
  • the second housing 210 further includes an image processing component 320 and a power supply component 330.
  • the first housing 110 and the second housing 210 are assembled using a laser welding process.
  • the first housing 110 and the second housing 210 are also provided with respective assembly parts to cooperate with each other to connect the first housing 110 and the second housing 210 to each other.
  • the assembly part of the second housing 210 is assembled.
  • the external laser 410 irradiates the assembly part of the first housing 110 and the second housing 210 to melt the contact surfaces of the two. After waiting for the melted part to cool, the front and rear housings are connected as a whole. Complete welding and sealing.
  • FIG. 2 Please refer to FIG. 2 for the housing assembly diagram of the second embodiment of the capsule endoscope of the present invention.
  • An inner liner 340 is further added to the inner side of the second housing 210.
  • the inner liner 340 is used to enhance or maintain the welding surface pressure while also It can protect the functions of the image processing component 320 and the power supply component 330.
  • the lining 340 is preferably made of a material that does not transmit laser light, and can also absorb or reflect laser light.
  • the assembling part of the first housing 110 and the second housing 210 is provided with an interference part 510, which can keep the first housing 110 and the second housing 210 of the capsule endoscope fully pre-tightened.
  • the thickness of the assembly part of the first shell and the second shell is 0.4mm-0.8mm, the width is 1mm-3mm, and the outer diameter interference of the interference part is 0.03mm to 0.07mm.
  • Figure 3 a schematic diagram of a welding spot with a laser wavelength of 532nm
  • Figure 4 is a schematic diagram of a welding spot with a laser wavelength of 1080nm
  • Figure 5 is a schematic diagram of a welding spot with a laser wavelength of 1980nm.
  • the wavelength of the external laser 410 may preferably be 532nm, 980nm, 1080nm, 1980nm, etc.
  • the spot diameter is preferably 0.5mm
  • the irradiation power range is about 4w to 15w.
  • the external laser 410 can use any laser type such as infrared laser, ultraviolet laser, picosecond laser, femtosecond laser, etc. For different capsule shell structure designs, those skilled in the art can choose different types of lasers for welding, and adjust different types of lasers at the same time. Welding parameters.
  • the external laser 410 may select a single light source or multiple light sources.
  • the relative movement of the capsule endoscope housing and the external laser 410 can be selected as follows: one:
  • the first method keep the light source fixed while the capsule shell rotates;
  • the third way The capsule shell and the light source are stationary or move at the same time.

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Abstract

一种胶囊内窥镜壳体激光焊接密封工艺，采用高分子材料制作胶囊内窥镜壳体，利用特定波长的外部激光（410）照射胶囊第一壳体（110）和第二壳体（210）的装配部，熔融两者接触面，熔融部分冷却后，第一壳体（110）和第二壳体（210）连接为一体，达到密封的效果。激光焊接密封工艺无需耗材辅料，解决了耗材辅料普适性差、订货周期长、成本浪费等问题，也减少了因耗材辅料的隐患导致的产品风险，同时简化工艺、缩短工时、提高产品合格率，更及时的满足市场对胶囊内窥镜产品的需求，生产成本降低、提升产品性能和竞争力。

Description

一种胶囊内窥镜壳体激光焊接密封工艺 技术领域
本发明涉及医疗器械领域，具体涉及到一种可用于消化道检查的胶囊内窥镜壳体激光焊接密封工艺。
 背景技术
胶囊内窥镜目前已经在逐步应用到胃肠道及消化道的检查中，因为胶囊内窥镜属于国家规定的三类医疗产品，对此类产品的制造材料、辅料、工艺等方面有极高的要求，例如壳体的密封工艺，目前普遍采用胶水粘结工艺，此类胶水属于定制胶水，普适性差，订货周期长且成本高昂，同时胶水开封后必须在短期内使用，无法实时契合市场对胶囊内窥镜产品的需求量，造成相当的浪费。
同时，胶水的挥发、老化等影响也会直接影响最终产品的品质周期，从而降低产品的竞争力，提升产品的市场销售难度。再次，由于胶水的化学性质，在通过人体消化道及胃肠道系统的过程中，存在一定的破裂、腐蚀等安全隐患，最终导致采用胶水粘结工艺的胶囊内窥镜产品会存在因胶水包含的物质被禁用于人体，从而导致胶囊内窥镜产品被禁用。
另外在胶水的粘结工艺中，点胶、固化等工艺繁琐，固化工时长，增加工艺成本的同时，相应的综合成本也将提升，繁琐的工艺也增加了产品的不良率。
基于此类现状，市场上已经出现了针对胶囊内窥镜壳体组装采用激光焊接工艺，但此类激光焊接工艺的前提是在焊接面添加助焊辅料或在焊接的壳体中添加助焊料，此类助焊料工艺稳定性较差，成本相对较高。
    因此，有必要开发一种新型的胶囊内窥镜焊接工艺，解决上述点胶工艺和激光焊接的技术缺陷。
 技术问题
为了解决上述点胶工艺和激光焊接的技术缺陷，有必要开发一种新型的胶囊内窥镜焊接工艺。
技术解决方案
为了解决以上问题，本发明提供一种胶囊内窥镜壳体激光焊接密封工艺，本发明的技术方案如下：
一种胶囊内窥镜壳体激光焊接密封工艺，胶囊内窥镜壳体采用高分子材料制成，包括第一壳体和第二壳体，进一步包括以下步骤：
第一壳体和第二壳体分别设置装配部，所述第一壳体和第二壳体各自的装配部相互配合，且第一壳体和第二壳体的装配部进一步设置有过盈部，过盈部用于预紧胶囊内窥镜的第一壳体和第二壳体；
将第一壳体和第二壳体的装配部进行组装；
外部激光照射装配部，熔融装配部的接触面；
等待熔融部冷却后，完成第一壳体和第二壳体的密封。
进一步的，所述的第二壳体内侧进一步还可以添加内衬，内衬用于增强和保持焊接面压力，保护胶囊内窥镜内部元器件。
进一步的，所述的第一壳体和第二壳体的装配部的厚度为0.4mm-0.8mm，宽度为1mm-3mm。
进一步的，所述的过盈部的外径过盈量为0.03mm至0.07mm。
进一步的，所述的外部激光的波长可以为532nm、980nm、1080nm、1980nm的任一种、激光光斑的直径为0.5mm，照射功率范围为4w至15w。
进一步的，所述的外部激光可以采用红外激光、紫外激光、皮秒激光、飞秒激光的任一种。
进一步的，所述的外部激光可以选择单光源或多光源。
进一步的，所述的第一壳体和第二壳体组成的胶囊壳体与外部激光可以采用壳体旋转光源固定的方式进行焊接。
进一步的，所述的第一壳体和第二壳体组成的胶囊壳体与外部激光可以采用光源旋转壳体固定的方式进行焊接。
进一步的，所述的第一壳体和第二壳体组成的胶囊壳体与外部激光可以采用胶囊壳体与光源同时静止或同时运动的方式进行焊接。
 有益效果
采用本发明的胶囊内窥镜壳体激光焊接密封工艺，采用高分子材料制作胶囊内窥镜壳体，采用特定波长的外部激光照射胶囊第一壳体和第二壳体的重合部分，熔融两者接触面；熔融部分冷却后，前后壳体连接为一体，达到密封的效果。在焊接胶囊内窥镜壳体时，无需耗材辅料，解决了耗材辅料普适性差、订货周期长、成本浪费等问题，也减少了因耗材辅料的隐患导致的产品风险，同时简化工艺、缩短工时、提高产品合格率；更及时满足市场对胶囊内窥镜产品的需求，生产成本降低、提升产品性能和竞争力。
 附图说明
图1为本发明胶囊内窥镜第一实施例的壳体组装关系图。
   图2为本发明胶囊内窥镜第二实施例的壳体组装关系图。
   图3为激光波长532nm的焊接光斑示意图。
   图4为激光波长1080nm的焊接光斑示意图。
   图5为激光波长1980nm的焊接光斑示意图。
 本发明的最佳实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
    请参考图1为本发明胶囊内窥镜第一实施例的壳体组装关系图，该胶囊内窥镜包括高分子材料制成的第一壳体110和第二壳体210、在第一壳体110内部还进一步包括拍摄组件310，在第二壳体210内部还进一步包括图像处理组件320和电源组件330，本领域技术人员熟知胶囊内窥镜的一般结构，本发明的创新点不在此处，因此不在赘述。图1中，第一壳体110和第二壳体210采用激光焊接工艺进行装配，第一壳体110和第二壳体210还设置有各自的装配部相互配合，将第一壳体110和第二壳体210的装配部进行组装，外部激光410照射第一壳体110和第二壳体210的装配部，熔融两者的接触面，等待熔融部分冷却后，前后壳体连接为一体，完成焊接与密封。
请参考图2为本发明胶囊内窥镜第二实施例的壳体组装关系图，进一步在第二壳体210的内侧添加内衬340，内衬340用于增强或保持焊接面压力，同时还可以保护图像处理组件320和电源组件330的作用，内衬340以不透射激光的材料为佳，同时也可吸收激光或反射激光。在第一壳体110和第二壳体210的装配部设置有过盈部510，过盈部510能保持胶囊内窥镜的第一壳体110和第二壳体210整圈预紧，第一壳体和第二壳体的装配部的厚度为0.4mm-0.8mm，宽度为1mm-3mm，过盈部的外径过盈量0.03mm至0.07mm。
    请参考图3为激光波长532nm的焊接光斑示意图；图4为激光波长1080nm的焊接光斑示意图；图5为激光波长1980nm的焊接光斑示意图。外部激光410的波长可以优选波长为532nm、980nm、1080nm、1980nm等波长、光斑直径优选为0.5mm，照射功率范围约为4w至15w。
外部激光410可以采用红外激光、紫外激光、皮秒激光、飞秒激光等任一种激光类型，针对不同的胶囊壳体结构设计，本领域技术人员可以选择不同种类激光进行焊接，同时调整不同的焊接参数。外部激光410可以选择单光源，也可选择多光源。
在焊接时，在保持胶囊内窥镜第一壳体110 和第二壳体210重合部分整个圆周均匀受到激光照射的前提下，胶囊内窥镜壳体与外部激光410的相对运动可以选择以下方式之一：
    第一种方式：胶囊壳体旋转的同时保持光源固定；
    第二种方式：胶囊壳体固定的同时保持光源旋转；
    第三种方式： 胶囊壳体与光源同时静止或同时运动。
    以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种胶囊内窥镜壳体激光焊接密封工艺，其特征在于，胶囊内窥镜壳体采用高分子材料制成，包括第一壳体和第二壳体，进一步包括以下步骤：
    第一壳体和第二壳体分别设置装配部,所述第一壳体和第二壳体各自的装配部相互配合，且第一壳体和第二壳体的装配部进一步设置有过盈部，过盈部用于预紧胶囊内窥镜的第一壳体和第二壳体；
    将第一壳体和第二壳体的装配部进行组装；
    外部激光照射装配部，熔融装配部的接触面；
    等待熔融部冷却后，完成第一壳体和第二壳体的密封。
  2. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的第二壳体内侧进一步还可以添加内衬，内衬用于增强和保持焊接面压力，保护胶囊内窥镜内部元器件。
  3. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的第一壳体和第二壳体的装配部的厚度为0.4mm-0.8mm、宽度为1mm-3mm。
  4. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的过盈部外径的过盈量为0.03mm至0.07mm。
  5. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的外部激光的波长可以为532nm、980nm、1080nm、1980nm的任一种、激光光斑的直径为0.5mm，照射功率范围为4w至15w。
  6. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的外部激光可以采用红外激光、紫外激光、皮秒激光、飞秒激光的任一种。
  7. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的外部激光可以选择单光源或多光源。
  8. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的第一壳体和第二壳体组成的胶囊壳体与外部激光可以采用壳体旋转光源固定的方式进行焊接。
  9. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的第一壳体和第二壳体组成的胶囊壳体与外部激光可以采用光源旋转壳体固定的方式进行焊接。
  10. 如权利要求1所述的胶囊内窥镜壳体激光焊接密封工艺，其特征在于，所述的第一壳体和第二壳体组成的胶囊壳体与外部激光可以采用胶囊壳体与光源同时静止或同时运动的方式进行焊接。
PCT/CN2020/084389 2019-12-06 2020-04-13 一种胶囊内窥镜壳体激光焊接密封工艺 WO2021109405A1 (zh)

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CN203354512U (zh) * 2013-07-01 2013-12-25 重庆金山科技（集团）有限公司 胶囊内镜外壳结构
CN104107025A (zh) * 2013-04-19 2014-10-22 亨克-萨斯,沃尔夫有限公司 带有刚性弯曲轴的内窥镜及生产该内窥镜的方法

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US20030171648A1 (en) * 2002-03-08 2003-09-11 Takeshi Yokoi Capsule endoscope
CN101340841A (zh) * 2005-12-19 2009-01-07 奥林巴斯医疗株式会社 胶囊内窥镜及其制造方法
CN103201066A (zh) * 2010-11-17 2013-07-10 奥林巴斯株式会社 内窥镜用激光焊接方法及内窥镜用激光焊接构件
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