WO2020218404A1 - Cathéter et endoscope souple comprenant celui-ci - Google Patents

Cathéter et endoscope souple comprenant celui-ci Download PDF

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Publication number
WO2020218404A1
WO2020218404A1 PCT/JP2020/017458 JP2020017458W WO2020218404A1 WO 2020218404 A1 WO2020218404 A1 WO 2020218404A1 JP 2020017458 W JP2020017458 W JP 2020017458W WO 2020218404 A1 WO2020218404 A1 WO 2020218404A1
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WO
WIPO (PCT)
Prior art keywords
catheter
reinforcing pipe
light guide
guide
image
Prior art date
Application number
PCT/JP2020/017458
Other languages
English (en)
Japanese (ja)
Inventor
慶太 岡山
啓吾 柳島
裕也 星
淳司 大和
Original Assignee
国立大学法人大阪大学
株式会社オヴァリス
高島産業株式会社
株式会社住田光学ガラス
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.)
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Application filed by 国立大学法人大阪大学, 株式会社オヴァリス, 高島産業株式会社, 株式会社住田光学ガラス filed Critical 国立大学法人大阪大学
Publication of WO2020218404A1 publication Critical patent/WO2020218404A1/fr

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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
    • 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
    • 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
    • A61B1/06—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 with illuminating arrangements
    • A61B1/07—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 with illuminating arrangements using light-conductive means, e.g. optical fibres
    • 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
    • A61B1/313—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 for introducing through surgical openings, e.g. laparoscopes
    • 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
    • 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
    • G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides

Definitions

  • the present invention relates to a catheter and a flexible endoscope including the catheter, and more particularly to a catheter having improved operability and operability in a lumen and a flexible endoscope including the catheter.
  • a flexible endoscope called an angioscope or an endoscopic catheter is used to measure the properties, length, and / or degree of stenosis of a lesion inside a blood vessel such as a coronary artery.
  • a vascular endoscope is designed to have a long axis and an extremely small shaft diameter in order to facilitate forward and backward movement in the blood vessel as compared with a gastrointestinal endoscope used for diagnosis, surgery, etc. of the gastrointestinal tract, for example. Has been done.
  • the ride guide is composed of a glass fiber capable of irradiating the outside with light from the distal end (that is, the tip of the endoscope on the side farthest from the doctor's hand).
  • the image guide is composed of an image fiber for image transmission for transmitting the image information obtained at the distal end to the doctor side.
  • these two guides are connected to the repeater device at the proximal end (that is, the tip of the endoscope closest to the doctor's hand).
  • the repeater device is also electrically connected to a medical console equipped with various information processing functions for displaying, analyzing, storing, and the like transmitted image information.
  • catheter the catheter part (hereinafter, simply referred to as "catheter") that advances and retracts in the blood vessel is minimally invasive to the blood vessel. Further, in order to prevent damage in the blood vessel and to allow the catheter to flex freely in the branched and narrowly intricate blood vessel in the body, it is desired that the catheter has sufficient flexibility.
  • the catheter is advanced, for example, by puncturing a predetermined part of the patient's body, from which the doctor grasps the catheter and pushes it into the blood vessel, but if the catheter is too soft, the doctor pushes it with a given force.
  • the force based on the catheter's pushability, trackability, and crossability within the vessel is axially buffered by the flexibility of the catheter, resulting in distality. This is because fine operation at the edge may be difficult.
  • An object of the present invention is to solve the above problems, and an object thereof is to improve pushability, followability, and passability at the proximal end, and to provide appropriate flexibility at the distal end.
  • the present invention is a catheter comprising a flexible tube, an image guide, a light guide, and a reinforcing pipe.
  • the flexible tube surrounds the image guide, the light guide and the reinforcing pipe.
  • the reinforcing pipe has a plurality of slits arranged along the long axis direction.
  • the plurality of slits is composed of at least one spiral slit or a plurality of arcuate slits provided continuously or intermittently along the outer circumference of the reinforcing pipe, and the length of the reinforcing pipe.
  • a catheter in which the distance between two adjacent slits in the axial direction is longer on the proximal side than on the distal side of the catheter.
  • the image guide is arranged inside the reinforcing pipe.
  • the light guide is composed of a plurality of glass fibers, and the light guide is arranged outside the reinforcing pipe.
  • the reinforcing pipe is arranged between the image guide and the light guide, whereby the image guide and the light guide are spatially separated.
  • the distal end of the reinforcing pipe is located proximal to each of the distal ends of the flexible tube, the image guide and the light guide.
  • the distal end of the reinforcing pipe is not fixed to any of the flexible tube, the image guide, and the light guide.
  • the distance between the two adjacent slits extends continuously or discontinuously from the distal side to the proximal side of the catheter.
  • the slit portion is composed of at least one spiral slit continuously provided along the outer circumference of the reinforcing pipe.
  • the slit portion is composed of a plurality of arc-shaped slits intermittently provided along the outer circumference of the reinforcing pipe.
  • the distal tip of the reinforcing pipe is composed of an annular stump.
  • the flexible tube is made of a light transmissive material.
  • At least one length marker is provided on the outer circumference of the reinforcing pipe.
  • the present invention also includes the above catheter.
  • the flexible endoscope of the present invention is a vascular endoscope.
  • the connecting plug is composed of two hollow covers molded so that the inside is hollow, and the proximal end of the reinforcing pipe in the catheter is in the hollow cover. Extends to.
  • the present invention is also an endoscopic system.
  • the operability of the flexible endoscope is improved, the accuracy of the examination at the time of endoscopy is improved, and the time is shortened, so that the physical burden on the patient can be reduced.
  • the catheter of the present invention has higher rigidity at the proximal end than the distal end, and the rigidity gradually decreases from the proximal end toward the distal end, and becomes more flexible at the distal end than the proximal end. It has and is designed so that its flexibility gradually decreases from the distal end to the proximal end.
  • a flexible endoscope equipped with such a catheter for example, has appropriate indentability, followability, and passage at the proximal end and retains appropriate flexibility at the distal end when advancing in a blood vessel. Allows free flexion of the catheter at the distal end.
  • FIG. 1 It is a figure for demonstrating an example of the flexible endoscope provided with the catheter of this invention. It is a schematic view of the distal tip portion of the catheter constituting the flexible endoscope shown in FIG. 1 seen from the minor axis direction. It is a schematic cross-sectional view in the long axis direction of the catheter constituting the flexible endoscope shown in FIG. 1, and (a) is a schematic cross-sectional view in P d near the distal end of the catheter of FIG. 1, (b). Is a schematic cross-sectional view at the central portion P m of the catheter of FIG. 1, and (c) is a schematic cross-sectional view at P p near the proximal end of the catheter of FIG.
  • FIG. 1 is a diagram for explaining an example of a flexible endoscope including the catheter of the present invention.
  • the flexible endoscope 100 includes a catheter 102 and a connection plug 104.
  • the catheter 102 preferably has a length of 1000 mm to 2500 mm, more preferably 1200 mm to 2300 mm, and, as will be described later, 1 for transmitting the image information obtained at the distal tip to the doctor side.
  • An image guide composed of one or more image fibers, a light guide composed of a plurality of glass fibers, a reinforcing pipe, and surrounding the image guide, the light guide, and the reinforcing pipe along the longitudinal direction. It includes a flexible tube 103.
  • the flexible tube 103 is preferably made of a light transmissive material (eg, a transparent or translucent material) in order to enhance visibility inside the tube.
  • Examples of the material constituting the flexible tube 103 include polyimide, fluororesin, PTFE (polytetrafluoroethylene), nylon, polyurethane, polypropylene, vinyl chloride, and silicone.
  • Flexible tubes are not necessarily limited, but have, for example, an average outer diameter of 0.3 mm to 3 mm, preferably 0.5 mm to 2 mm, and, for example, 0.1 mm to 2.8 mm, preferably 0.2 mm to 0. It has an average inner diameter of 7 mm.
  • the catheter 102 also preferably has a substantially columnar shape and is provided with a tip protector 160 on the distal end of the flexible tube 103.
  • the tip protector 160 is made of, for example, stainless steel, an aluminum alloy, a platinum alloy, a metal such as titanium or gold, or a material such as ceramics.
  • distal is a term indicating the position of an instrument and a device such as an endoscope, and when the instrument or device is used by a doctor, the instrument is used. Or the part of the device that is far from the doctor, and the term “proximal” is a term that refers to the position of the device and device, and when the device or device is used by the doctor, the device or device. Refers to the part of the device that is closer to the doctor.
  • FIG. 2 is a schematic view of the distal tip of the catheter 102 constituting the flexible endoscope shown in FIG. 1 as viewed from the minor axis direction.
  • the distal tip of the catheter 102 is, for example, an image of a ride guide 140 composed of a plurality of glass fibers 138 in which an image guide 120 is arranged near a substantially center in a flexible tube 103.
  • the guide 120 is distributed and arranged on a part or the whole of the outer circumference of the guide 120.
  • the distal tip of the catheter 102 has an image guide 120 and a light guide 140 secured in a flexible tube 103 by a known adhesive material 132, such as an epoxy adhesive.
  • the distal tips of the image guide 120 and the ride guide 140 are exposed as they are, but the present invention is not limited thereto.
  • the distal tip of the catheter 102 may be provided with a lens optically connected to the distal tip of the image guide 120 and the ride guide 140.
  • the image guide 120 is composed of, for example, one image fiber having a long axis and a substantially columnar shape.
  • Specific examples of the image fiber include those known as image transmission fibers (for example, preferably 8,000 to 20,000 glass fibers are regularly arranged and bundled, bundled and bonded, or those.
  • the average outer diameter of the image guide 120 is preferably 0.05 mm to 1 mm, more preferably 0.1 mm to 0.5 mm.
  • the glass fiber 138 constituting the light guide 140 has, for example, a long axis and a substantially columnar shape, and examples thereof include those known as lighting fibers in various technical fields.
  • the average outer diameter of each glass fiber 138 is preferably 0.001 mm to 1 mm, more preferably 0.01 mm to 0.1 mm.
  • Such glass fibers 138 are not adhered to each other in, for example, the intermediate portion of the light guide 140 (that is, the portion of the light guide 140 excluding the portions near the distal end and the portion near the proximal end). It is held in.
  • the light guide 140 also comprises preferably 1 to 100, more preferably 10 to 50 of the glass fibers 138.
  • the light guide in the flexible tube 103 constituting the catheter 102 is optically connected to the first connection terminal 106 in the connection plug 104.
  • the image guide in the flexible tube 103 constituting the catheter 102 is optically connected to the second connection terminal 108 in the connection plug 104.
  • connection plug 104 shown in FIG. 1, two covers 105, 105 are formed so that the proximal end of the flexible tube 103, together with the proximal end of the image guide and the light guide, is hollow inside. It is housed in'.
  • the first connection terminal 106 and the second connection terminal 108 are arranged so as to protrude from the hollow covers 105 and 105'of the connection plug 104 and be substantially parallel to each other.
  • the flexible tube 103 penetrates through the flexible receiving portion 107 attached to the hollow cover 105, 105', and is housed and fixed in the hollow cover 105, 105'.
  • the flexible receiving portion 107 is preferably composed of a material having appropriate elasticity, and specific examples of the material include silicone rubber, natural or synthetic rubber, polyimide, nylon, polyethylene terephthalate, and polyamide. And so on.
  • FIG. 3 is a schematic cross-sectional view of the catheter constituting the flexible endoscope shown in FIG. 1 in the long axis direction.
  • the flexible tube 103 has a long axis of an image guide 120, a light guide 140 composed of a plurality of glass fibers 138, and a reinforcing pipe 150. Siege along the direction.
  • the distal ends of the flexible tube 103, the image guide 120 and the light guide 140 are the distal tips of the catheter 102.
  • the distal end 151 of the reinforcing pipe 150 is located proximal to each of the distal ends of the flexible tube 103, the image guide 120 and the light guide 140, whereas it constitutes a portion. This makes it possible to reduce the rigidity of the distal tip of the catheter 102 due to the absence of the reinforcing pipe 150. Further, the distal end 151 of the reinforcing pipe 150 is not fixed to any of the flexible tube 103, the image guide 120, and the light guide 140.
  • the flexibility of the flexible pipe 103, the image guide 120, and the light guide 140 is increased at the distal tip of the catheter 102, and the catheter 102 is moved in a more free direction at P d near the distal end of the catheter 102. Can be bent.
  • the image guide 120 is arranged inside the reinforcing pipe 150 as shown in FIG.
  • the ride guide 140 composed of the glass fiber 138 is arranged outside the reinforcing pipe 150.
  • the image guide 120 is surrounded by the reinforcing pipe 150, so that it can be prevented from being easily damaged when an excessive force is applied from the outside.
  • the image guide 120 functions to transmit the image information obtained at the distal tip of the catheter 102 to the doctor side.
  • the image guide 120 may be composed of a smaller diameter and a smaller number (for example, one) in order to pass through a relatively narrow lumen such as a blood vessel.
  • the reinforcing pipe 150 serves to protect such an image guide 120 from the outside.
  • the light guide 140 functions to irradiate a predetermined light into the lumen from the distal tip of the catheter 102 to keep the field of view of the image transmitted through the image guide 120 bright.
  • the glass fiber 138 constituting the light guide 140 has a fine diameter, and by using a plurality of the glass fibers 138, a desired amount of light can be supplied.
  • the flexible tube 103 is made of a transparent or translucent light-transmitting material, if the light guide 140 (glass fiber 138) is arranged outside the reinforcing fiber 150, it is assumed that the catheter 102 Even if a part of the glass fiber 138 is broken at any part, light leaks at the broken part. Therefore, it is possible to detect poor quality of the catheter 102.
  • FIG. 4 there is no adhesion between the image guide 120 and the reinforcing pipe 150, and between the reinforcing pipe 150 and the light guide 140 (or glass fiber 138), and the inside of the flexible tube 103
  • the image guide 120, the reinforcing pipe 150, and the light guide 140 (and the glass fiber 138) are preferably slidable from each other.
  • FIG. 5 is a diagram for explaining the arrangement of reinforcing pipes in the catheter constituting the flexible endoscope shown in FIG. (A) to (c) of FIG. 5 correspond to (a) to (c) of FIG. 3, respectively, and the description regarding the cross section of the reinforcing pipe 150 is omitted.
  • a plurality of slit portions 154 are formed in the reinforcing pipe 150 along the long axis direction.
  • the distance between the slit portions 154 provided in the reinforcing pipe 150 (that is, the distance between one slit portion 154 provided in the reinforcing pipe 150 and another slit portion 154 adjacent thereto) is , P d near the distal end of the catheter 102 ((a) in FIG. 5), P m in the central portion ((b) in FIG. 5), and P p near the proximal end ((c) in FIG. 5).
  • the distance between the two adjacent slits 154 in P d near the distal end of the catheter 102 ((a) in FIG. 5) is the distance in the central portion P m of the catheter 102 ((b) in FIG. 5). and the spacing in the near the proximal end P p of the catheter 102 (the to FIG. 5 (c)) is shorter than.
  • the distance between the two adjacent slits 154 at the central portion P m of the catheter 102 ((b) in FIG. 5) is the distance at P p near the proximal end of the catheter 102 ((c) in FIG. 5). Shorter than.
  • FIG. 6 is a diagram for explaining a reinforcing pipe arranged in the catheter constituting the flexible endoscope shown in FIG.
  • the reinforcing pipe 150 is, for example, an elongated pipe designed to have substantially the same outer diameter from the distal tip to the proximal tip, and is made of stainless steel, nitinol, aluminum, copper, or brass. It is composed of metal such as.
  • the reinforcing pipe 150 has, but is not necessarily limited to, an outer diameter of 0.05 mm to 2.7 mm, an inner diameter of 0.04 mm to 2.6 mm, and a length of 900 mm to 2400 mm.
  • the outer diameter of the reinforcing pipe 150 is substantially constant from the distal end to the proximal end.
  • the reinforcing pipe 150 shown in FIG. 6 is provided with a spiral slit 152 continuously provided along the outer circumference.
  • the spiral slit 152 is described as one continuous slit in FIG. 6, it is not limited to such a form.
  • the spiral slit may be provided as being composed of two or more slits along the outer circumference of the reinforcing pipe 150, and / or the slit may be intermittent in the middle. ..
  • two adjacent slit portions 154 are gradually expanded from the distal side (D) to the proximal side (P) by the spiral slit 152.
  • the distance between two adjacent slits in the reinforcing panel may be continuously expanded or discontinuously expanded.
  • the distance between two adjacent slits 154 in the reinforcing pipe 150 is not necessarily limited, and an arbitrary length can be selected by those skilled in the art.
  • the distance ( Id ) between two adjacent slits 154 on the distal side (D) is, for example, 0.1 mm to 2 mm, preferably 0.3 mm to 1 mm, and the proximal side.
  • the distance ( Ip ) between the two adjacent slit portions 154 in ( P ) is, for example, 2 mm to 20 mm, preferably 4 mm to 10 mm.
  • the reinforcing pipe 150 is provided with a plurality of slit portions 154 as described above, so that the reinforcing pipe 150 has different flexibility at each of the distal end, the central portion, and the proximal end. Can have.
  • a position at a predetermined distance from the distal tip for example, a position preferably 50 cm to 150 cm, more preferably 80 cm to 100 cm from the distal tip) or distal.
  • a length marker 155 may be provided that describes information at a predetermined distance from the tip (for example, a distance of preferably 20 cm to 70 cm, preferably 30 cm to 60 cm from the distal tip).
  • the length marker 155 is composed of, for example, any one of numbers, symbols, figures, and the like, or a combination thereof.
  • FIG. 7 is a diagram for schematically explaining the flexibility of the reinforcing pipe shown in FIG.
  • the flexibility of the reinforcing pipe 150 is most limited at position P 0 on the proximal side (P) (D 1 > D 2 > D 3 > P 0 ). In other words, the flexibility of the reinforcing pipe 150 increases toward the distal end (D 1 > D 2 > D 3 > P 0 ).
  • the rigidity of the reinforcing pipe 150 becomes the highest, and gradually decreases in the order of positions D 3 , D 2 , and D 1 (D 1 ⁇ D 2 ⁇ D 3). ⁇ P 0 ). That is, the proximal side of the reinforcing pipe 150 is less likely to buffer the force acting in the axial direction (white arrow), and the pushability, followability, and passability when the doctor advances the catheter are maintained. As a result, the reinforcing pipe 150 may have non-uniform (or sloped) flexibility from the distal end to the proximal end.
  • FIGS. 8 and 9 are diagrams for explaining an example of a reinforcing pipe that can be arranged in a catheter constituting the flexible endoscope of the present invention.
  • a plurality of arcuate slits 152'provided intermittently along the outer circumference are provided.
  • Reinforcing pipes 150'within may be used ((a) and (b) in FIGS. 9).
  • the distance I'of two adjacent slits 154'provided near the distal end of the reinforcing pipe 150' is, for example, the distal end of the reinforcing pipe 150 shown in FIG. It is designed to be substantially the same as the distance ( Id ) between two adjacent slits provided in the vicinity.
  • the proximal tip of the catheter 102 is completely contained within the connecting plug 104 (see (a) and (b) of FIGS. 10).
  • the proximal tip portion 158 of the reinforcing pipe 150 also extends at least through the flexible accommodating portion 107 into the hollow cover (indicated by 105'in FIG. 10) of the connecting plug 104. .. This is because the proximal tip portion 158 of the reinforcing pipe 150 is arranged at such a position, so that the rigidity of the connecting portion between the catheter 102 and the connecting plug 104 can be increased.
  • FIG. 11 is a diagram for explaining an example of a flexible endoscope including another catheter of the present invention.
  • the same reference numerals are given to the configurations common to the above.
  • the flexible endoscope 200 includes a catheter 202 and a connection plug 104.
  • the distal ends of the flexible tube 103, image guide 120 and light guide 140 constitute the distal tip of the catheter 202, whereas the distal ends of the reinforcing pipe 250.
  • the end 251 is located proximal to each distal end of the flexible tube 103, image guide 120 and light guide 140. This makes it possible to reduce the rigidity of the distal tip of the catheter 202 due to the absence of the reinforcing pipe 250. As a result, the flexibility of the flexible pipe 103, the image guide 120, and the light guide 140 is increased, and the catheter 202 can be bent in a more free direction at P d2 near the distal end of the catheter 202.
  • both the image guide 120 and the ride guide 140 are arranged inside the reinforcing pipe 250. This allows both the image guide 120 and the ride guide 140 (except near their distal tips) to be protected by the reinforcing pipe 250.
  • the reinforcing pipe 250 constituting the catheter 202 shown in FIG. 11B has the same structure as the reinforcing pipe 150 shown in FIGS. 3 and 6 above. Then, the plurality of slit portions 254 provided in the reinforcing pipe 250 are arranged so that the distance between the two adjacent slit portions 254 is longer on the proximal side than the distal side of the catheter 202 in the longitudinal direction of the reinforcing pipe 250. By being provided, it may have non-uniform (or sloped) flexibility from the distal end to the proximal end. As a result, the flexibility can be increased on the distal side of the catheter 202, the rigidity can be increased on the proximal side of the catheter 202, and the pushability when the doctor advances the catheter, It can maintain followability and passability.
  • the flexible endoscope of the present invention is provided with a catheter and a connecting plug as described above, and can be used as, for example, a vascular endoscope, a ureteroscope, or a salpingoscope.
  • the flexible endoscope of the present invention is preferably a vascular endoscope.
  • FIG. 12 is a diagram showing an example of an endoscope system in which the flexible endoscope of the present invention shown in FIG. 1 is connected to a repeater device and a medical console.
  • the flexible endoscope 100 of the present invention is connected to the repeater device 300 via a connection plug. Further, the repeater device 300 is connected to the medical console 400 via, for example, a cable 320. In this way, the endoscope system 500 is constructed.
  • a doctor moves the catheter 102 of the flexible endoscope 100 to a desired position through, for example, a blood vessel of a patient, and a repeater device 300 is used to move the catheter 102 to a distal tip of the catheter 102.
  • the image of the affected area obtained from the area can be displayed on the display 440 of the medical console 400.
  • the doctor performs medical treatment such as enlarging / reducing the image displayed on the display, adjusting the brightness, recording or stopping the image, or playing back the recorded image through the operation buttons provided on the repeater device 300. It is possible to instruct the console.
  • the present invention is not limited to such an embodiment.
  • the components of the repeater device may be incorporated directly into the console without going through the cable 320 to form one console device as a whole. That is, such a console device can also constitute an endoscope system together with the flexible endoscope of the present invention.
  • the connection plug of the flexible endoscope is connected to the console device via a reception port provided in the console device.

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Abstract

Un cathéter selon la présente invention est pourvu d'un tube flexible, d'un guide d'image, d'un guide de lumière et d'un tuyau de renforcement. Dans la présente invention : le tube flexible enveloppe le guide d'image, le guide de lumière et le tuyau de renforcement ; le tuyau de renforcement comprend une pluralité de fentes disposées le long d'une direction d'axe long ; la pluralité de fentes sont constituées par au moins une fente en forme de spirale ou une pluralité de fentes en forme d'arc disposées de façon continue ou discontinue le long de la circonférence extérieure du tuyau de renforcement ; et l'espacement entre deux fentes adjacentes dans la direction d'axe long du tuyau de renforcement est conçu pour être plus grand au niveau du côté proximal du cathéter qu'au niveau du côté distal de celui-ci.
PCT/JP2020/017458 2019-04-25 2020-04-23 Cathéter et endoscope souple comprenant celui-ci WO2020218404A1 (fr)

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JP2019-084731 2019-04-25
JP2019084731A JP2020178937A (ja) 2019-04-25 2019-04-25 カテーテルおよびそれを備える軟性内視鏡

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JP7502214B2 (ja) 2021-02-12 2024-06-18 テルモ株式会社 カテーテルシステム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006055659A (ja) * 2005-10-21 2006-03-02 Olympus Corp 内視鏡
WO2015098236A1 (fr) * 2013-12-24 2015-07-02 オリンパス株式会社 Endoscope

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006055659A (ja) * 2005-10-21 2006-03-02 Olympus Corp 内視鏡
WO2015098236A1 (fr) * 2013-12-24 2015-07-02 オリンパス株式会社 Endoscope

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