WO2024012359A1 - Tube d'insertion d'endoscope, et procédé de traitement et appareil de production associés - Google Patents

Tube d'insertion d'endoscope, et procédé de traitement et appareil de production associés Download PDF

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Publication number
WO2024012359A1
WO2024012359A1 PCT/CN2023/106248 CN2023106248W WO2024012359A1 WO 2024012359 A1 WO2024012359 A1 WO 2024012359A1 CN 2023106248 W CN2023106248 W CN 2023106248W WO 2024012359 A1 WO2024012359 A1 WO 2024012359A1
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WO
WIPO (PCT)
Prior art keywords
tube
endoscope insertion
insertion tube
braided mesh
processing method
Prior art date
Application number
PCT/CN2023/106248
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English (en)
Chinese (zh)
Inventor
戴笛
Original Assignee
湖南省华芯医疗器械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 湖南省华芯医疗器械有限公司 filed Critical 湖南省华芯医疗器械有限公司
Publication of WO2024012359A1 publication Critical patent/WO2024012359A1/fr

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Classifications

    • 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
    • A61B1/00071—Insertion part of the endoscope body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints

Definitions

  • the present invention relates to the technical field of medical devices, and in particular to an endoscope insertion tube and its processing method and production device.
  • Endoscopes are widely used in medical devices and industrial equipment to penetrate into some long lumen to obtain image data of related objects.
  • an endoscope is inserted into the human esophagus or other lumen.
  • imaging data of internal biological tissues or other parts of the human body is obtained.
  • the endoscope insertion tube in the related art includes an inner tube from the inside to the outside, a braided mesh tube and a heat shrinkable tube.
  • the heat shrinkable tube is heated to generate a tight wrapping force so that the inner tube and the braided mesh tube are relatively fixed.
  • heat-shrinkable tubes are usually installed artificially, which makes the endoscope insertion tube cumbersome to operate, has low production efficiency and high production costs during the production process, and is not conducive to the promotion and application of endoscopes.
  • the invention discloses an endoscope insertion tube, a processing method and a production device thereof, so as to solve the technical problems of cumbersome operation and high production cost in the production process of the endoscope insertion tube in related technologies.
  • the present invention adopts the following technical solutions:
  • the application provides an endoscope insertion tube.
  • the endoscope insertion tube includes an inner tube, a braided mesh tube and an outer covering.
  • the braided mesh tube is sleeved on the outer periphery of the inner tube.
  • the outer covering The layer is formed on the outer periphery of the braided mesh tube through a dip molding process, or the outer covering layer is formed on the outer periphery of the braided mesh tube through a spray molding process.
  • the outer covering layer fixes the braided mesh tube relative to the inner tube. .
  • the material of the outer covering layer is at least one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC, and PET.
  • this application provides a method for processing the aforementioned endoscope insertion tube, which includes the following steps:
  • S200 Dip or spray plastic to allow plastisol to adhere to the surface of the braided mesh tube to form the outer covering layer.
  • processing method of the endoscope insertion tube may also include:
  • processing method of the endoscope insertion tube may also include:
  • processing method of the endoscope insertion tube may also include:
  • S600 Scrape off the outer peripheral portion of the outer coating so that the diameter of the endoscope insertion tube is within a set threshold.
  • the present application also provides a production device for the aforementioned endoscope insertion tube, which includes a frame having two oppositely arranged placement plates, and the placement plates are provided with a thread extending through the placement plates. through holes, and the two ends of the inner tube are respectively inserted into the through holes of the two mounting plates.
  • the number of the through holes is multiple, and the through holes of two mounting plates The position and quantity correspond one to one.
  • the frame is provided with lifting lugs.
  • the diameter of the through hole matches the diameter of the outer coating.
  • the outer coating is formed on the outer periphery of the braided mesh tube through a dip molding process or a spray molding process.
  • a dip molding process or a spray molding process is conducive to automated production and control ;
  • the processing method of the endoscope insertion tube disclosed in this application is to cut off the two ends of the braided network tube so that the braided network tube is completely wrapped in the outer coating, which can avoid the phenomenon of loose fibers in the braided network tube;
  • the two placement plates are provided with multiple one-to-one corresponding through holes, which can perform dip-molding processing on multiple endoscope insertion tubes at one time, improving endoscopic vision.
  • the production efficiency of the endoscope insertion tube is improved; at the same time, the through hole is provided at the lower part of the mounting plate, which ensures that the endoscope insertion tube can be completely immersed in the plastisol during the dipping process to ensure the quality of the dipping;
  • the diameter of the through hole matches the diameter of the outer coating. After dipping and shaping, by pulling the endoscope insertion tube to move, the outer edge of the through hole can scrape off the outer peripheral part of the outer coating, that is, the outer coating The excess portion exceeding the set threshold in the radial direction is scraped off so that the diameter of the endoscope insertion tube is within the set threshold.
  • Figure 1 is a schematic structural diagram of an endoscope insertion tube according to an embodiment of the present application
  • Figure 2 is one of the schematic flow diagrams of the processing method of the endoscope insertion tube according to the embodiment of the present application;
  • Figure 3 is the second schematic flow diagram of the processing method of the endoscope insertion tube according to the embodiment of the present application.
  • Figure 4 is the third schematic flow chart of the processing method of the endoscope insertion tube according to the embodiment of the present application.
  • Figure 5 is the fourth schematic flow chart of the processing method of the endoscope insertion tube according to the embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a production device for an endoscope insertion tube according to an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that data so used are interchangeable under appropriate circumstances so that embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first,”"second,” etc.
  • the distinguished objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • an embodiment of the present application provides an endoscope insertion tube.
  • the disclosed endoscope insertion tube includes an inner tube 100, a braided mesh tube 200 and an outer coating 300.
  • the inner tube 100 has an internal lumen,
  • the inner lumen channel is arranged along the axial direction of the inner tube 100, and instruments, traction ropes, and electrical connection wires (for example, electrical connection wires that provide power to the light-emitting component and the camera component) can pass through the internal lumen channel.
  • the braided mesh tube 200 is set on the outer periphery of the inner tube 100, and the outer covering layer 300 is formed on the outer periphery of the braided mesh tube 200 through a dip molding process or a spray molding process. That is to say, the outer covering layer 300 tightly wraps the braided mesh tube 200 and the inner tube 100.
  • the braided mesh tube 200 is fixed relative to the inner tube 100 .
  • the torsion resistance of the inner tube 100 can be improved, that is, when one end of the inner tube 100 twists, the other end of the inner tube 100 can produce expected twisting changes, preventing the inner tube 100 from twisting.
  • the tube 100 bends at will due to the influence of its own material, structure, etc., which affects the transmission of the twisting effect.
  • the inner tube 100 may include at least one of a straight tube segment and a spiral tube segment.
  • the structure of the inner tube 100 may be determined according to the specific application scenario of the endoscope, which is not limited by the embodiment of the present application; for example, for bronchus
  • the two ends of the inner tube 100 can be straight tube sections, and the middle section of the inner tube 100 can be a spiral tube section.
  • the material of the outer covering layer 300 is at least one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC, and PET.
  • the outer coating 300 is formed on the outer periphery of the braided mesh tube 200 through a dip molding process or a spray molding process. Compared with the traditional method of manually setting a heat shrinkable tube, production is avoided.
  • the cumbersome operating steps of the endoscope insertion tube improve the production efficiency of the endoscope insertion tube and reduce the production cost of the endoscope insertion tube; at the same time, the use of dip molding process or spray molding process is conducive to automated production and control, further saving labor costs.
  • the embodiment of the present application provides the aforementioned processing method of an endoscope insertion tube, which specifically includes the following steps:
  • S200 Dip or spray plastic to make the plastisol adhere to the surface of the braided mesh tube 200 to form the outer covering layer 300.
  • the length of the inner tube 100 is greater than the length of the braided network tube 200.
  • the inner tube 100 can be manually inserted into the braided network tube 200 to form the base body of the endoscope insertion tube. Both ends of the inner tube 100 are exposed to the braided network tube.
  • the two ends of 200 can be used to support or clamp the two ends of the inner tube 100 during the process of dipping or spraying, so as to achieve fixation of the base body and facilitate processing operations.
  • step S200 if the plastisol is attached to the surface of the braided mesh tube 200 by immersion, the matrix can be immersed in the plastisol in one immersion method; for example, the matrix formed by the inner tube 100 and the braided mesh tube 200 is immersed in the plastisol.
  • the immersion time is t, so that the plastisol adheres to the surface of the braided mesh tube 200 .
  • the immersion time t can be adaptively selected according to the required thickness of the outer covering layer 300, for example, it can be 10s, 20s or 30s, which is not limited by the embodiment of the present application.
  • each immersion time is 10s
  • the interval time is 0.5min to 1min
  • the method of multiple interval immersions is beneficial to improving the uniformity of the outer coating 300 formed by dipping.
  • the substrate can be put into a heating furnace for heating. After the substrate is heated, the substrate can be immersed in plastisol to make the plastisol easy to adhere to the substrate and at the same time to make the plastisol easy to penetrate. into the internal gap of the braided network tube 200, so that the braided network tube 200 is not easy to bend and becomes stronger, so that the braided network tube 200 wraps the inner tube 100 stably and reliably.
  • step S200 if the plastisol is adhered to the surface of the braided mesh tube 200 using a spraying process, the thickness of the outer coating 300 can be controlled by controlling the spraying time.
  • the spraying process is simple and easy to operate and implement.
  • the processing method may also include:
  • S300 uses the leveling method to level the plastisol evenly on the surface of the braided mesh tube 200;
  • the braided mesh tube 200 with uniform plastisol attached to the surface is heated to completely solidify the plastisol.
  • the leveling method specifically includes connecting the substrate with the outer coating 300 attached to the surface to a centrifuge and placing it in an air flow parallel to the substrate.
  • the centrifuge drives the substrate to rotate.
  • the centrifuge speed can be 100rpm to 200rpm, and the air flow speed can be 3m/s to 20m/s.
  • step S400 when the plastisol is solidified and shaped, the plastisol should penetrate into the braided mesh tube 200, and the outer covering layer 300 completely wraps the outer periphery of the braided mesh tube 200.
  • water cooling, air cooling, or natural cooling can be used. The method allows the endoscope insertion tube to be cooled to normal temperature, thereby forming an endoscope insertion tube.
  • the processing method of the endoscope insertion tube may also include:
  • the two ends of the braided network tube 200 are usually prone to loose threads. Therefore, in this application, the parts at both ends of the braided network tube 200 are cut off to avoid the braided network tube. 200 may be scattered; in a preferred embodiment, the lengths of the braided mesh tube 200 and the outer covering 300 are consistent and the two ends are flush. That is to say, the braided mesh tube 200 is completely wrapped in the outer covering 300, which can avoid braiding. If the network tube 200 becomes loose, the stability of the endoscope insertion tube is ensured and the service life of the endoscope insertion tube is extended.
  • the processing method may also include:
  • S600 Scrape the circumferential portion of the outer coating 300 to ensure that the diameter of the endoscope insertion tube is within a set threshold.
  • step S600 the circumferential portion of the outer coating 300 is scraped, that is, the excess portion in the radial direction of the endoscope insertion tube that exceeds the set threshold is removed, in order to control the diameter of the endoscope insertion tube.
  • the diameter of the endoscope insertion tube reaches the usage standard.
  • a scraping hole with a diameter of a set threshold can be set.
  • the embodiment of the present application also discloses a production device for endoscope insertion tubes.
  • the production device includes a frame 400.
  • the frame 400 has two oppositely arranged placement plates 410.
  • the placement plates 410 are provided with through holes penetrating the placement plates 410. 411.
  • the two ends of the inner tube 100 are respectively inserted into the through holes 411 of the two mounting plates 410. That is to say, when the base body is dip-molded or spray-molded, the base body is set up between the two mounting plates 410.
  • the frame 400 is also provided with lifting lugs 420. During the dipping operation, the lifting lugs 420 can be hung to control the immersion or lifting of the frame 400.
  • the immersion speed of the base body is ⁇ 10mm/s
  • the lifting speed of the endoscope insertion tube is ⁇ 5mm/s, the speed should not be too high to ensure that the outer coating 300 is evenly adhered.
  • the number of through holes 411 is multiple, and the positions and numbers of the through holes 411 of the two placement plates correspond one to one.
  • multiple substrates can be dip-molded at one time during the production process. , which can significantly improve the production efficiency of endoscope insertion tubes.
  • a plurality of through holes 411 provided on the same mounting plate 410 are arranged side by side at the lower part of the mounting plate 410.
  • the endoscope insertion tube can be be completely immersed in the plastisol to ensure the quality of the impregnation; of course, in addition to the aforementioned multiple through holes 411 being arranged side by side on the lower part of the mounting plate 410, a layout of multiple rows of through holes 411 can also be adopted, with two adjacent rows of through holes 411 are staggeredly distributed. Such an arrangement can improve the production efficiency of endoscope insertion tubes.
  • the diameter of the through hole 411 is the aforementioned preset threshold, that is to say, the diameter of the through hole 411 matches the diameter of the outer coating 300.

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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)
  • Mechanical Engineering (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

La présente invention concerne un tube d'insertion d'endoscope, et un procédé de traitement et un appareil de production associé. Le tube d'insertion d'endoscope comprend un tube interne (100), un tube en maille tressée (200) et une couche de revêtement externe (300). Le tube en maille tressée (200) est emmanché sur la périphérie du tube interne (100) ; la couche de revêtement externe (300) est formée sur la périphérie du tube en maille tressée (200) au moyen d'un processus d'immersion dans une matière plastique, ou la couche de revêtement externe (300) est formée sur la périphérie du tube en maille tressée (200) au moyen d'un processus de pulvérisation de matière plastique ; et le tube en maille tressée (200) est fixé par rapport au tube interne (100) au moyen de la couche de revêtement externe (300). Le procédé de traitement pour le tube d'insertion d'endoscope comprend : l'insertion du tube interne (100) dans le tube en maille tressée (200), et la fixation d'un plastisol à la surface du tube en maille tressée (200) au moyen du processus d'immersion dans une matière plastique ou du processus de pulvérisation de matière plastique. Dans la solution, la couche de revêtement externe (300) est fixée à la surface du tube en maille tressée (200) au moyen du processus d'immersion dans une matière plastique ou du processus de pulvérisation de matière plastique. Par rapport au procédé de manchonnage d'un tube thermorétractable sur la périphérie du tube en maille tressée (200) dans une solution conventionnelle, la présente invention est pratique à utiliser, et améliore considérablement l'efficacité de production de tubes d'insertion d'endoscope.
PCT/CN2023/106248 2022-07-11 2023-07-07 Tube d'insertion d'endoscope, et procédé de traitement et appareil de production associés WO2024012359A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210809652.4A CN115153384B (zh) 2022-07-11 2022-07-11 一种内窥镜插入管及其加工方法和生产装置
CN202210809652.4 2022-07-11

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CN115153384B (zh) * 2022-07-11 2024-10-15 湖南省华芯医疗器械有限公司 一种内窥镜插入管及其加工方法和生产装置

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