WO2021075262A1 - 内視鏡 - Google Patents
内視鏡 Download PDFInfo
- Publication number
- WO2021075262A1 WO2021075262A1 PCT/JP2020/037103 JP2020037103W WO2021075262A1 WO 2021075262 A1 WO2021075262 A1 WO 2021075262A1 JP 2020037103 W JP2020037103 W JP 2020037103W WO 2021075262 A1 WO2021075262 A1 WO 2021075262A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flexible tube
- outer layer
- endoscope
- curved
- porosity
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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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
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
-
- 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
- A61B1/012—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 characterised by internal passages or accessories therefor
- A61B1/018—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 characterised by internal passages or accessories therefor for receiving instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/0011—Manufacturing of endoscope parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00112—Connection or coupling means
- A61B1/00119—Tubes or pipes in or with an endoscope
-
- 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
- A61B1/12—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 cooling or rinsing arrangements
- A61B1/126—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 cooling or rinsing arrangements provided with means for cleaning in-use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
- A61M25/0051—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids made from fenestrated or weakened tubing layer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0141—Tip steering devices having flexible regions as a result of using materials with different mechanical properties
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
Definitions
- the present invention relates to an endoscope.
- the endoscopic device generally has an insertion part that is inserted into the body of the subject (digestive organ, etc.).
- the insertion unit has a light guide for transmitting light and an electrical wiring for transmitting an electric signal from the imaging unit.
- the insertion portion has a conduit for water supply or air supply, and a treatment tool conduit for inserting and removing the treatment tool.
- the shape of the insertion part of the endoscope is required to change flexibly in the subject's body. Therefore, it is desirable that the various pipelines contained inside the insertion portion also have high flexibility.
- the treatment tool conduit has a two-layer structure, the inner layer is formed of solid polytetrafluoroethylene (PTFE), and the outer layer has a porous structure. It is composed of PTFE.
- PTFE solid polytetrafluoroethylene
- the tip of the insertion portion of the endoscope is generally provided with a curved portion capable of an active bending operation by an operator's operation.
- the insertion portion also has a flexible tube portion that passively curves regardless of the operator's operation, for example, when the tip portion hits the wall surface of the digestive organ.
- the flexible tube portion may be further divided into a plurality of portions having different degrees of curvature.
- the conventional endoscope has a curved portion capable of an active bending motion and a flexible tube portion in which a passive bending motion is generated.
- the flexibility of the treatment tool conduit is made substantially uniform over the entire length of the curved portion and the insertion portion. Therefore, the flexibility of the flexible tube portion may not be sufficiently obtained, and the expected operation may not be obtained.
- the pipeline may be damaged including buckling of the pipeline.
- An object of the present invention is to provide an endoscope capable of effectively suppressing damage to a pipeline while fully exerting the performance of a plurality of parts having different degrees of curvature.
- the endoscope according to the present invention includes an insertion portion and a pipeline arranged inside the insertion portion.
- the insertion portion includes a curved portion that can be bent based on the operation and a flexible tube portion that can be bent by an external force unrelated to the operation.
- the pipeline includes an inner layer and an outer layer formed on the outer side of the inner layer.
- the inner layer is formed of a solid structure of polytetrafluoroethylene
- the outer layer is formed of a porous structure of polytetrafluoroethylene. Will be done.
- the porosity of the outer layer in the curved portion is smaller than the porosity of the outer layer in the flexible tube portion.
- the endoscope of the present invention it is possible to provide an endoscope capable of effectively suppressing damage to a pipeline while sufficiently exerting the performance of a plurality of portions having different degrees of curvature. ..
- FIG. 1 is an external view of the endoscope system 1 of the first embodiment
- FIG. 2 is a perspective view showing the structure of the tip portion 104 of the endoscope 100.
- the endoscope system 1 is roughly composed of an endoscope 100, a processor 200, a light source device 300, a water supply / air supply unit 400, a suction unit 500, a display 600, and an input unit 700.
- the endoscope 100 is configured to be insertable into the body of a subject, images a subject, and has a function of transmitting an image signal of the captured image to a processor 200.
- the processor 200 receives the image signal from the endoscope 100 and executes a predetermined signal processing.
- the light source device 300 is configured to be connectable to the processor 200, and includes a light source that emits irradiation light for illuminating the subject inside the light source device 300.
- the light from the light source is directed toward the subject via the light guide described later.
- the light source device 300 may be configured separately from the processor 200 so as to be connectable to the processor 200, or may be incorporated inside the processor 200.
- the water supply / air supply unit 400 is provided with an air pump for discharging the water flow or the air flow supplied to the subject.
- the suction unit 500 includes a pump and a tank (not shown) for sucking body fluid and excised material sucked from the body of the subject via the endoscope 100.
- the display 600 is a display device for displaying based on, for example, a data processing result in the processor 200.
- the input unit 700 is a device for inputting instructions from the operator in various measurement operations.
- the endoscope 100 includes an insertion portion 10, a hand operation portion 102, a universal cable 105, and a connector portion 106.
- the insertion portion 10 further includes a flexible tube portion 101, a connection portion 103A, a curved portion 103, and a tip portion 104.
- the insertion portion 10 of the endoscope 100 has flexibility and includes a flexible tube portion 101 for inserting into the body of the subject.
- the flexible pipe portion 101 is connected to the hand operation portion 102 at one end thereof.
- the hand operation unit 102 includes, for example, a bending operation knob 102A and other operation units that can be operated by the user, and is a part for causing the operator to perform various operations for imaging by the endoscope system 1.
- the hand operation unit 102 is provided with a treatment tool insertion port 102B for inserting the treatment tool.
- the portion close to the curved portion 103 is the first flexible pipe portion 101A
- the portion close to the hand operation portion 102 is the second flexible pipe portion 101B.
- the shape of the curved portion 103 can be actively changed by the operation of the bending operation knob 102A, whereas the first flexible tube portion 101A is irrelevant to the operation of the bending operation knob 102A.
- This is a portion whose shape is passively changed by an external force, for example, an external force caused by the tip portion 104 or the curved portion 103 hitting the wall surface of the digestive organ.
- the second flexible tube portion 101B but the degree of change in shape is smaller than that of the first flexible tube portion 101A (the maximum radius of curvature is large).
- the flexible tube portion 101 has two types of flexible tube portions, but the present invention is not limited to this, and three or more types of flexible tube portions are provided. It may be good, or one type may be used.
- a bending portion 103 (active bending portion) configured to be bendable is provided at the tip of the flexible pipe portion 101. As described above, the bending portion 103 is bent by the traction of the operation wire (not shown in FIG. 1) linked to the rotation operation of the bending operation knob 102A provided on the hand operation portion 102. A connecting portion 103A that is not deformed by the bending wire W or an external force may be provided between the bending portion 103 and the first flexible pipe portion 101A.
- a tip portion 104 provided with an image sensor (imaging unit) is connected to the tip of the curved portion 103.
- the imaging region of the endoscope 100 can be changed by changing the direction of the tip portion 104 according to the bending operation of the bending portion 103 by the rotation operation of the bending operation knob 102A.
- the universal cable 105 extends toward the connector unit 106.
- the universal cable 105 includes a light guide, various wirings, and various pipelines inside.
- the connector unit 106 includes various connectors for connecting the endoscope 100 to the processor 200. Further, the connector portion 106 includes a water supply / air supply pipeline 108 as a path for sending the water flow and the air flow toward the insertion portion 101.
- Orientation lenses 112A and 112B are arranged at the tip portion 104 of the endoscope 100, and light guides LGa and LGb extend from the tip portion 104 to the connector portion 106 inside the insertion portion 101.
- the light from the light source of the light source device 300 is guided by the light guides LGa and LGb, and is irradiated toward the subject by the alignment lenses 112A and 112B arranged at the tip portion 104.
- the endoscope 100 includes an objective lens 113 and an image pickup device 133 at the tip portion 104.
- the objective lens 113 provided at the tip portion 104 collects scattered light and reflected light from the subject to form an image of the subject on the light receiving surface of the image sensor 133.
- the image sensor 133 may be composed of a CCD (Charge Coupled Device) or a CMOS sensor (Complementary Metal Oxide Semiconductor Sensor) as an example.
- the image sensor 133 is controlled by signals (gain control signal, exposure control signal, shutter speed control signal, etc.) supplied from the processor 200 via the electrical wiring 138, and is an image of the image captured by the processor 200.
- the signal is supplied via the electrical wiring 138 and the A / D conversion circuit (not shown).
- an air supply water supply port 114 is provided on the end surface of the tip portion 104 as end portions or openings of various pipelines.
- the air supply water supply port 114 (nozzle) is connected to the air supply water supply pipe line 121 in order to introduce a water flow or an air flow for cleaning the tip portion 104 or the like.
- sub water supply port 115 is connected to the sub water pipe line 122 in order to introduce the sub water supply for removing filth in the field of view.
- the pipelines 121 to 122 are arranged so as to extend along the inside of the tip portion 104, the curved portion 103, the insertion portion 101, the hand operation portion 102, and the universal cable 105.
- a treatment tool conduit 141 is provided inside the endoscope 100.
- a treatment tool such as forceps is arranged so as to be able to advance and retreat inside.
- the tip of the treatment tool conduit 141 constitutes the treatment tool mouth 116 at the tip portion 104.
- the treatment tool conduit 141 may also serve as a suction conduit.
- the cross-sectional structure of the tip portion 104 will be described in more detail with reference to FIG.
- This cross-sectional view shows the details of the structures of the objective lens 113 to the electrical wiring 138, the air supply / water supply line 121, and the treatment tool line 141.
- the structures of the alignment lenses 112A and 112B and the light guides LGa and LGb are not shown. Further, the structure of the sub water pipe 122 is also omitted from the illustration.
- the tip portion 104 has a tip hard portion 104M.
- the hard tip portion 104M includes a hole portion constituting the above-mentioned air supply water supply port 114, secondary water supply port 115, and treatment tool port 116. As shown in FIG. 3, the air supply / water supply line 121 and the treatment tool line 141 are inserted into the corresponding holes of the tip rigid portion 104M.
- the hard tip portion 104M also has a hole for fitting the lens frame 136 that holds the objective lens 113, the aperture AP, and the light-shielding mask 131.
- the lens frame 136 is fixed to the hole of the hard tip portion 104M via the sealing agent 137.
- a light-shielding mask 131 for example, a light-shielding mask 131, a cover glass 132, an image sensor (CCD) 133, and a circuit board 134 are held by a CCD unit frame 135, and the CCD unit frame 135 is a hard tip portion. It is inserted and fixed in the hole of 104M. An electric wiring 138 is connected to the circuit board 134.
- the tip portion 104 (tip hard portion 104M) configured as described above is fitted into the tip of the curved portion 103.
- the curved portion 103 is configured by rotatably connecting curved pieces 153 formed in a substantially cylindrical shape to each other with rivets.
- the outer surface of the curved piece 153 is covered with a mesh tube 152.
- the reticulated pipe 152 is joined to the tip rigid portion 104M via the ring contact pipe 151 at its end.
- the outer surface of the net-like tube 152 is covered with an outer skin rubber tube 155 made of synthetic resin.
- the outer skin rubber tube 155 and the tip rigid portion l04M are fixed at their ends by, for example, a fixing thread S1.
- a wire guide 154 is provided between the plurality of bending pieces 153, and the bending wire W for the bending operation penetrates through the wire guide 154.
- Four bending wires W are provided in one insertion portion 101, for example, at substantially equal intervals in the circumferential direction.
- One end of each bending wire W is fixed to the frontmost bending piece 153.
- the other end of the bending wire W is tensioned and relaxed by the operation of the bending operation knob 102A, so that the bending portion 103 is curved.
- the connecting portion 103A is a member that connects the bending portion 103 and the first flexible pipe portion 101A as described above, and is a rigid portion whose outer shape is not deformed by the operation of the bending wire W or an external force.
- the first flexible tube portion 101A has a plurality of bending pieces 153A, similarly to the bending portion 103. Like the curved piece 153, the curved piece 153A is configured to be rotatably connected to each other by rivets.
- the second flexible tube portion 101B may be provided with a spiral tube 153B (metal flat plate coil), a metal net 153C, and an outer skin resin 153D (polyurethane, etc.) from the inside.
- first flexible tube portion 101A and the second flexible tube portion 101B are provided with a coil sheath 161 for passing the bending wire W extending from the hand operation portion 102.
- the bending wire W is slidably arranged inside the coil sheath 161. Therefore, even if the bending wire W is strained or relaxed, the first flexible tube portion 101A and the second flexible tube portion 101A are slidable.
- the shape of 101B does not change.
- the first flexible tube portion 101A and the second flexible tube portion 101B are deformed with respect to the insertion portion 101 within the movable range of the curved piece 153A and the spiral tube 153B due to, for example, an external force caused by the outer wall of the digestive organ. Can be done.
- the curved portion 103, the first flexible tube portion 101A, and the second flexible tube portion 101B can be deformed by the operation of the bending wire W or an external force, but the limit of deformation (maximum radius of curvature). Are different from each other. Further, since the maximum radius of curvature is different, the buckling strength (kink resistance) required for the tube for the pipeline inserted inside is also different from each other.
- the treatment tool conduit 141 is provided as shown in FIG. 5 so that the characteristics of the curved portion 103, the first flexible tube portion 101A, and the second flexible tube portion 101B can be obtained to the maximum. It is configured.
- FIG. 5 is a cross-sectional view showing the cross-sectional structure of the treatment tool conduit 141 and a graph showing its characteristics (porosity Rah).
- the treatment tool conduit 141 has a two-layer structure of an inner layer 201 and an outer layer 202 arranged outside the inner layer 201.
- the inner layer 201 is composed of a solid structure of PTFE over the entire length (tip portion 104 to second flexible pipe portion 101B) in order to suppress damage due to contact with a treatment tool passing through the conduit.
- the outer layer 202 is composed of porous PTFE. Full-structured PTFE is hard and has high resistance to breakage, but is prone to buckling, while porous PTFE is flexible and has low resistance to breakage, but is less likely to buckle.
- the treatment tool conduit 141 has a two-layer structure consisting of a solid structure of PTFE and a porous PTFE, it is possible to achieve both resistance to breakage and buckling resistance.
- a flexible and hard to buckle tube can be obtained.
- porous PTFE of the outer layer 202 of the first embodiment has a different porosity Rah depending on the position.
- the outer layer 202 located in the bending portion 103 that can be bent by the bending operation knob 102A has, for example, a porosity Rah set to about 10 to 40%.
- the outer layer 202 located in the first flexible tube portion 101A and the second flexible tube portion 101B has a higher porosity Rah (for example, 30 to 80%, than the inside of the curved portion 103) than the inside of the curved portion 103. High number) is given.
- the bending portion 103 Since the degree of bending of the bending portion 103 can be adjusted by operating the bending wire W with the bending operation knob 102A, the bending portion 103 does not need to be more flexible than the insertion portion 101. Therefore, the outer layer 202 in the bending portion 103 may have flexibility to the extent that the operation of the bending wire W is not hindered.
- the bending portion 103 since the bending wire W gives a large change in curvature as compared with the insertion portion 101, it is required to suppress the breakage of the pipeline due to buckling. Therefore, the outer layer 202 of the treatment tool conduit 141 inside the curved portion 103 is given a smaller porosity than that of the first flexible tube portion 101A and the second flexible tube portion 101B. As a result, the bending portion 103 can have flexibility to the extent that the bending wire W can be deformed, and can have high resistance to buckling.
- the first flexible tube portion 101A and the second flexible tube portion 101B are flexibly deformed by an external force based on the contact of the tip portion 104 or the like with the inner wall of the digestive organ in order to reduce the burden on the patient. Is required, and higher flexibility than the curved portion 103 is required.
- the outer layer 202 of the treatment tool conduit 141 of the first embodiment has a higher porosity Rah inside the first flexible tube portion 101A and the second flexible tube portion 101B than inside the curved portion 103. Given. As a result, the first flexible tube portion 101A and the second flexible tube portion 101B are provided with high flexibility, and the burden on the patient is reduced.
- the porosity Rah in the first flexible tube portion 101A and the second flexible tube portion 101B is the same, but different porosities may be given.
- the porosity Rah of the outer layer 202 inside the tip portion 104 is arbitrary, and may be the same as the porosity Rah inside the curved portion 103, for example. Since the tip portion 104 does not bend (deform), the hardness of the treatment tool conduit 141 passing through the inside thereof does not matter. Only the outer layer 202 of the tip portion 103 may be composed of a solid structure of PTFE.
- the treatment tool conduit 141 has a two-layer structure of an inner layer 201 and an outer layer 202, and the inner layer 201 is formed of a solid structure of polytetrafluoroethylene.
- the outer layer 202 is formed of polytetrafluoroethylene having a porous structure, and the porosity of the outer layer 202 in the curved portion 103 is higher than the porosity of the outer layer 202 in the first flexible tube portion 101A and the second flexible tube portion 101B. Is also made smaller. As a result, a certain degree of flexibility and sufficient buckling resistance can be obtained in the curved portion 103, while high flexibility can be obtained in the first flexible tube portion 101A and the second flexible tube portion 101B.
- the two-layer structure is adopted for the treatment tool conduit 141, but it goes without saying that the same structure may be adopted for the conduits other than the treatment tool conduit 141.
- FIG. 1 The overall configuration of the endoscope of this second embodiment is the same as that of the first embodiment (FIG. 1). Further, the configurations of the tip portion 104, the curved portion 103, and the insertion portion 101 are the same as those of the first embodiment (FIGS. 2 to 3) except for the points described below.
- the porosity Rah of the outer layer 202 inside the curved portion 103 is smaller than the porosity Rah of the outer layer 202 inside the flexible tube portion 101. Similar to form. However, while the porosity Rah of the curved portion 103 is set to a low value on the tip portion 104 side, it gradually rises at the end portion of the curved portion 103 on the first flexible tube portion 101A side, and can be the curved portion 103. In the vicinity of the boundary with the flexible tube portion 101, the porosity Rah inside the first flexible tube portion 101A is substantially the same.
- the porosity Rah of the outer layer 202 inside the tip portion 104 may be substantially the same as the porosity Rah inside the curved portion 103, as in the first embodiment, but as shown in FIG. In addition, the value may be larger than the porosity Rah inside the curved portion 103.
- the boundary between the curved portion 103 and the flexible pipe portion 101 does not need to be strictly defined, and may be any position of the connecting portion 0103A.
- the curvature is generally small at the end portion on the tip portion 104 side, and the curvature is large on the flexible tube portion 101 side. Therefore, by adopting the distribution of the porosity Rah as shown in FIG. 6 inside the curved portion 103, the curved portion 103 can enhance the buckling resistance at the end portion on the tip portion 104 side. , The flexibility can be increased on the insertion portion 101 side.
- the present invention is not limited to the above-described examples, and includes various modifications.
- the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations.
- it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.
- Treatment tool line 133 ... Imaging element, 134 ... Circuit board, 135 ... CCD unit frame, 136 ... Lens frame, 137 ... Sealing agent, 138 ... Electrical wiring, 161 ... Coil sheath, 200 ... Processor, 300 ... Light source device, 400 ... Water supply / air supply section, 500 ... Suction section, 600 ... Display, 700 ... Input section.
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Abstract
Description
まず、本発明の実施の形態の内視鏡システムについて詳細に説明する。図1は、第1の実施形態の内視鏡システム1の外観図であり、図2は、内視鏡100の先端部104の構造を示す斜視図である。内視鏡システム1は、内視鏡100、プロセッサ200、光源装置300、送水送気部400、吸引部500、ディスプレイ600、及び入力部700から大略構成される。
次に、第2の実施の形態に係る内視鏡を、図6を参照して説明する。この第2の実施の形態の内視鏡の全体構成は、第1の実施の形態(図1)と同様である。また、先端部104、湾曲部103及び挿入部101の構成も、次に説明する点を除き、第1の実施の形態(図2~図3)と同様である。
本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。
Claims (2)
- 挿入部と、
前記挿入部の内部に配置される管路と
を備え、
前記挿入部は、
操作に基づき湾曲可能な湾曲部と、
前記操作とは無関係な外力により湾曲可能な可撓管部と
を含み、
前記管路は、内層と、前記内層の外側に形成される外層とを備え、
前記内層は、充実構造のポリテトラフルオロエチレンで形成され、
前記外層は、多孔質構造のポリテトラフルオロエチレンで形成され、
前記湾曲部における前記外層の気孔率は、前記可撓管部における前記外層の気孔率よりも小さいことを特徴とする内視鏡。 - 前記湾曲部における前記外層の気孔率は、前記可撓管部の端部において徐々に上昇するようにされている、請求項1に記載の内視鏡。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202080072454.3A CN114599262B (zh) | 2019-10-17 | 2020-09-30 | 内窥镜 |
| US17/767,214 US12318070B2 (en) | 2019-10-17 | 2020-09-30 | Endoscope |
| EP20877921.5A EP4047409B1 (en) | 2019-10-17 | 2020-09-30 | Endoscope |
| ES20877921T ES2998659T3 (en) | 2019-10-17 | 2020-09-30 | Endoscope |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-190065 | 2019-10-17 | ||
| JP2019190065A JP7372809B2 (ja) | 2019-10-17 | 2019-10-17 | 内視鏡 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021075262A1 true WO2021075262A1 (ja) | 2021-04-22 |
Family
ID=75486941
Family Applications (1)
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| PCT/JP2020/037103 Ceased WO2021075262A1 (ja) | 2019-10-17 | 2020-09-30 | 内視鏡 |
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| US (1) | US12318070B2 (ja) |
| EP (1) | EP4047409B1 (ja) |
| JP (1) | JP7372809B2 (ja) |
| CN (1) | CN114599262B (ja) |
| ES (1) | ES2998659T3 (ja) |
| WO (1) | WO2021075262A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114903409A (zh) * | 2022-05-06 | 2022-08-16 | 深圳市罗伯医疗科技有限公司 | 内镜适配器及内镜手术辅助器械 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7270829B2 (ja) * | 2020-02-27 | 2023-05-10 | オリンパス株式会社 | 内視鏡、内視鏡の挿入部、内視鏡の製造方法 |
| CN116421127B (zh) * | 2023-03-01 | 2025-11-21 | 浙江优亿医疗器械股份有限公司 | 一种内窥镜及其蛇骨结构 |
Citations (6)
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| JPH071630A (ja) * | 1992-12-25 | 1995-01-06 | Japan Gore Tex Inc | 可とう性多層チューブ |
| JP2001046314A (ja) | 1999-08-09 | 2001-02-20 | Olympus Optical Co Ltd | 内視鏡 |
| WO2008088087A2 (en) | 2007-01-18 | 2008-07-24 | Hitachi Koki Co., Ltd. | Power tool |
| WO2012077760A1 (ja) * | 2010-12-09 | 2012-06-14 | ダイキン工業株式会社 | 多層チューブ、及び、該多層チューブの製造方法 |
| JP2012153076A (ja) * | 2011-01-28 | 2012-08-16 | Sumitomo Electric Fine Polymer Inc | 可とう性多層チューブ及びその製造方法 |
| JP2015175385A (ja) * | 2014-03-13 | 2015-10-05 | 日星電気株式会社 | マルチルーメンチューブ |
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| JP3345786B2 (ja) * | 1993-03-17 | 2002-11-18 | ジャパンゴアテックス株式会社 | 可とう性チューブ及びその製造方法 |
| US5789047A (en) * | 1993-12-21 | 1998-08-04 | Japan Gore-Tex, Inc | Flexible, multilayered tube |
| US5885209A (en) * | 1996-02-02 | 1999-03-23 | Green; Anthony D. | Endoscopic working channel and method of making same |
| US20100256445A1 (en) * | 2006-12-07 | 2010-10-07 | International Polymer Engineering, Inc. | Endoscopic Working Channel and Method of Making Same |
| US8137293B2 (en) * | 2009-11-17 | 2012-03-20 | Boston Scientific Scimed, Inc. | Guidewires including a porous nickel-titanium alloy |
| WO2013088791A1 (ja) * | 2011-12-16 | 2013-06-20 | オリンパスメディカルシステムズ株式会社 | 樹脂チューブ |
| JP6461442B2 (ja) * | 2016-11-09 | 2019-01-30 | オリンパス株式会社 | 内視鏡 |
| EP3723821B1 (en) * | 2017-12-15 | 2021-09-22 | Perfuze Limited | Improved catheters and devices and systems incorporating such catheters |
| JP7309740B2 (ja) * | 2018-09-20 | 2023-07-18 | 富士フイルム株式会社 | 内視鏡用チューブ及び内視鏡 |
| JP6982700B2 (ja) * | 2018-12-12 | 2021-12-17 | オリンパス株式会社 | 内視鏡用チャンネルユニット |
| JP2020171420A (ja) * | 2019-04-09 | 2020-10-22 | オリンパス株式会社 | 医療機器用チューブおよび医療機器 |
-
2019
- 2019-10-17 JP JP2019190065A patent/JP7372809B2/ja active Active
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2020
- 2020-09-30 WO PCT/JP2020/037103 patent/WO2021075262A1/ja not_active Ceased
- 2020-09-30 EP EP20877921.5A patent/EP4047409B1/en active Active
- 2020-09-30 CN CN202080072454.3A patent/CN114599262B/zh active Active
- 2020-09-30 ES ES20877921T patent/ES2998659T3/es active Active
- 2020-09-30 US US17/767,214 patent/US12318070B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071630A (ja) * | 1992-12-25 | 1995-01-06 | Japan Gore Tex Inc | 可とう性多層チューブ |
| JP2001046314A (ja) | 1999-08-09 | 2001-02-20 | Olympus Optical Co Ltd | 内視鏡 |
| WO2008088087A2 (en) | 2007-01-18 | 2008-07-24 | Hitachi Koki Co., Ltd. | Power tool |
| WO2012077760A1 (ja) * | 2010-12-09 | 2012-06-14 | ダイキン工業株式会社 | 多層チューブ、及び、該多層チューブの製造方法 |
| JP2012153076A (ja) * | 2011-01-28 | 2012-08-16 | Sumitomo Electric Fine Polymer Inc | 可とう性多層チューブ及びその製造方法 |
| JP2015175385A (ja) * | 2014-03-13 | 2015-10-05 | 日星電気株式会社 | マルチルーメンチューブ |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114903409A (zh) * | 2022-05-06 | 2022-08-16 | 深圳市罗伯医疗科技有限公司 | 内镜适配器及内镜手术辅助器械 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20220369896A1 (en) | 2022-11-24 |
| EP4047409B1 (en) | 2024-12-11 |
| CN114599262A (zh) | 2022-06-07 |
| ES2998659T3 (en) | 2025-02-21 |
| EP4047409A4 (en) | 2023-11-29 |
| EP4047409A1 (en) | 2022-08-24 |
| JP7372809B2 (ja) | 2023-11-01 |
| US12318070B2 (en) | 2025-06-03 |
| EP4047409C0 (en) | 2024-12-11 |
| JP2021062169A (ja) | 2021-04-22 |
| CN114599262B (zh) | 2025-08-22 |
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